BACKGROUND Epidermal growth factor receptor tyrosine kinase inhibitors(EGFR-TKIs)significantly improve the survival of patients with Epidermal growth factor receptor(EGFR)sensitive mutations in non-small cell lung can...BACKGROUND Epidermal growth factor receptor tyrosine kinase inhibitors(EGFR-TKIs)significantly improve the survival of patients with Epidermal growth factor receptor(EGFR)sensitive mutations in non-small cell lung cancer(NSCLC).CASE SUMMARY A 67-year-old female patient in advanced lung adenocarcinoma suffered from drug resistance after EGFR-TKIs treatment.Secondary pathological tissue biopsy confirmed squamous cell carcinoma(SCC)transformation.Patients inevitably encountered drug resistance issues after receiving EGFR-TKIs treatment for a certain period of time,while EGFR-TKIs can significantly improve the survival of patients with EGFR-sensitive mutations in NSCLC.Notably,EGFR-TKIs resistance includes primary and acquired.Pathological transformation is one of the mechanisms of acquired resistance in EGFR-TKIs,with SCC transformation being relatively rare.Our results provide more detailed results of the patient’s diagnosis and treatment process on SCC transformation after EGFR-TKIs treatment for lung adenocarcinoma.CONCLUSION Squamous cell carcinoma transformation is one of the acquired resistance mechanisms of EGFR-TKIs in advanced lung adenocarcinoma with EGFR mutations.展开更多
Objective: There is an ongoing debate about whether the management of gastroenteropancreatic(GEP)neuroendocrine carcinoma(NEC) should follow the guidelines of small-cell lung cancer(SCLC). We aim to identify the genet...Objective: There is an ongoing debate about whether the management of gastroenteropancreatic(GEP)neuroendocrine carcinoma(NEC) should follow the guidelines of small-cell lung cancer(SCLC). We aim to identify the genetic differences of GEPNEC and its counterpart.Methods: We recruited GEPNEC patients as the main cohort, with lung NEC and digestive adenocarcinomas as comparative cohorts. All patients undergone next-generation sequencing(NGS). Different gene alterations were compared and analyzed between GEPNEC and lung NEC(LNEC), GEPNEC and adenocarcinoma to yield the remarkable genes.Results: We recruited 257 patients, including 99 GEPNEC, 57 LNEC, and 101 digestive adenocarcinomas.Among the mutations, KRAS, RB1, TERT, IL7R, and CTNNB1 were found to have different gene alterations between GEPNEC and LNEC samples. Specific genes for each site were revealed: gastric NEC(TERT amplification),colorectal NEC(KRAS mutation), and bile tract NEC(ARID1A mutation). The gene disparities between small-cell NEC(SCNEC) and large-cell NEC(LCNEC) were KEAP1 and CDH1. Digestive adenocarcinoma was also compared with GEPNEC and suggested RB1, APC, and KRAS as significant genes. The TP53/RB1 mutation pattern was associated with first-line effectiveness. Putative targetable genes and biomarkers in GEPNEC were identified in22.2% of the patients, and they had longer progression-free survival(PFS) upon targetable treatment [12.5 months vs. 3.0 months, HR=0.40(0.21-0.75), P=0.006].Conclusions: This work demonstrated striking gene distinctions in GEPNEC compared with LNEC and adenocarcinoma and their clinical utility.展开更多
Objective:Lung squamous cell carcinoma(LUSC)is associated with a low survival rate.Evidence suggests that bone morphogenetic proteins(BMPs)and their receptors(BMPRs)play crucial roles in tumorigenesis and progression....Objective:Lung squamous cell carcinoma(LUSC)is associated with a low survival rate.Evidence suggests that bone morphogenetic proteins(BMPs)and their receptors(BMPRs)play crucial roles in tumorigenesis and progression.However,a comprehensive analysis of their role in LUSC is lacking.Our study aimed to explore the relationship between BMPs/BMPRs expression levels and the tumorigenesis and prognosis of LUSC.Methods:The“R/Limma”package was utilized to analyze the differential expression characteristics of BMPs/BMPRs in LUSC,using data from TCGA,GTEx,and GEO databases.Concurrently,the“survminer”packages were employed to investigate their prognostic value and correlation with clinical features in LUSC.The core gene associated with LUSC progression was further explored through weighted gene correlation network analysis(WGCNA).LASSO analysis was conducted to construct a prognostic risk model for LUSC.Clinical specimens were examined by immunohistochemical analysis to confirm the diagnostic value in LUSC.Furthermore,based on the tumor immune estimation resource database and tumor-immune system interaction database,the role of the core gene in the tumor microenvironment of LUSC was explored.Results:GDF10 had a significant correlation only with the pathological T stage of LUSC,and the protein expression level of GDF10 decreased with the tumorigenesis of LUSC.A prognostic risk model was constructed with GDF10 as the core gene and 5 hub genes(HRASLS,HIST1H2BH,FLRT3,CHEK2,and ALPL)for LUSC.GDF10 showed a significant positive correlation with immune cell infiltration and immune checkpoint expression.Conclusion:GDF10 might serve as a diagnostic biomarker reflecting the tumorigenesis of LUSC and regulating the tumor immune microenvironment to guide more effective treatment for LUSC.展开更多
BACKGROUND Patients with type 2 diabetes mellitus(T2DM)have large fluctuations in blood glucose(BG),abnormal metabolic function and low immunity to varying degrees,which increases the risk of malignant tumor diseases ...BACKGROUND Patients with type 2 diabetes mellitus(T2DM)have large fluctuations in blood glucose(BG),abnormal metabolic function and low immunity to varying degrees,which increases the risk of malignant tumor diseases and affects the efficacy of tumor chemotherapy.Controlling hyperglycemia may have important therapeutic implications for cancer patients.AIM To clarify the influence of BG fluctuations on chemotherapy efficacy and safety in T2DM patients complicated with lung carcinoma(LC).METHODS The clinical data of 60 T2DM+LC patients who presented to the First Affiliated Hospital of Ningbo University between January 2019 and January 2021 were retrospectively analyzed.All patients underwent chemotherapy and were grouped as a control group(CG;normal BG fluctuation with a mean fluctuation<3.9 mmol/L)and an observation group(OG;high BG fluctuation with a mean fluctuation≥3.9 mmol/L)based on their BG fluctuations,with 30 cases each.BGrelated indices,tumor markers,serum inflammatory cytokines and adverse reactions were comparatively analyzed.Pearson correlation analysis was performed to analyze the correlation between BG fluctuations and tumor markers.RESULTS The fasting blood glucose and 2-hour postprandial blood glucose levels in the OG were notably elevated compared with those in the CG,together with markedly higher mean amplitude of glycemic excursions(MAGE),mean of daily differences,largest amplitude of glycemic excursions and standard deviation of blood glucose(P<0.05).In addition,the OG exhibited evidently higher levels of carbohydrate antigen 19-9,carbohydrate antigen 125,carcinoembryonic antigen,neuron-specific enolase,cytokeratin 19,tumor necrosis factor-α,interleukin-6,and highsensitivity C-reactive protein than the CG(P<0.05).Pearson analysis revealed a positive association of MAGE with serum tumor markers.The incidence of adverse reactions was significantly higher in the OG than in the CG(P<0.05).CONCLUSION The greater the BG fluctuation in LC patients after chemotherapy,the more unfavorable the therapeutic effect of chemotherapy;the higher the level of tumor markers and inflammatory cytokines,the more adverse reactions the patient experiences.展开更多
BACKGROUND Synchronous multiple lung cancers are rare and refer to the simultaneous presence of two or more primary lung tumors,which present significant challenges in terms of diagnosis and treatment.CASE SUMMARY We ...BACKGROUND Synchronous multiple lung cancers are rare and refer to the simultaneous presence of two or more primary lung tumors,which present significant challenges in terms of diagnosis and treatment.CASE SUMMARY We report a case of multiple synchronous lung cancers with hilar lymph node metastasis of small cell carcinoma of unknown origin in a 73-year-old man.Transbronchial lung biopsy revealed squamous cell carcinoma.Although enlargement of lymph node 12u was detected,no distant metastases were observed.The patient was preoperatively diagnosed with T1cN0M0 and underwent thoracoscopic right upper lobectomy with nodal dissection(ND2a).Based on histopathological findings,the primary lesion was squamous cell carcinoma.A microinvasive adenocarcinoma was also observed on the cranial side of the primary lesion.Tumors were detected in two resected lymph nodes(#12u and#11s).Both tumors were pathologically diagnosed as small cell carcinomas.The primary lesion of the small cell carcinoma could not be identified even by whole-body imaging;however,chemotherapy was initiated for hilar lymph node metastasis of the small cell carcinoma of unknown origin.CONCLUSION Multiple synchronous lung cancers can be accompanied by hilar lymph node metastasis of small cell carcinomas of unknown origin.展开更多
BACKGROUND Primary pulmonary lymphoepithelioma-like carcinoma(PPLELC)is an uncommon subtype of squamous cell carcinoma(SCC)of the lung,closely associated with Epstein-Barr virus(EBV)infection.The pathological features...BACKGROUND Primary pulmonary lymphoepithelioma-like carcinoma(PPLELC)is an uncommon subtype of squamous cell carcinoma(SCC)of the lung,closely associated with Epstein-Barr virus(EBV)infection.The pathological features of PPLELC closely resemble those of SCC,which makes it prone to misdiagnosis.Surgical intervention constitutes the primary treatment approach for PPLELC.CASE SUMMARY This report describes a 44-year-old woman who was hospitalized for 1 mo due to left chest pain.Computed tomography revealed a mass shadow in the anterior basal segment of the left lower lobe,and a subsequent needle biopsy suggested SCC.The patient underwent radical tumor resection in the lower left lobe of the lung,and postoperative pathological examination indicated lymphoepithelial carcinoma,and the test for EBV encoded small RNA was positive.Following surgery,the patient was scheduled to receive four cycles of adjuvant chemotherapy,using the paclitaxel+carboplatin regimen,but the patient refused further treatment.CONCLUSION PPLELC is an exceptionally rare subtype of lung SCC and is prone to misdiagnosis.展开更多
Objective:Lung metastasis is a common and fatal complication of liver transplantation for hepatocellular carcinoma(HCC).The precise prediction of post-transplant lung metastasis in the early phase is of great value.Me...Objective:Lung metastasis is a common and fatal complication of liver transplantation for hepatocellular carcinoma(HCC).The precise prediction of post-transplant lung metastasis in the early phase is of great value.Methods:The mRNA profiles of primary and paired lung metastatic lesions were analyzed to determine key signaling pathways.We enrolled 241 HCC patients who underwent liver transplantation from three centers.Tissue microarrays were used to evaluate the prognostic capacity of tumor necrosis factor(TNF),tumor necrosis factor receptor 1(TNFR1),and TNFR2,particularly for post-transplant lung metastasis.Results:Comparison of primary and lung metastatic lesions revealed that the TNF-dependent signaling pathway was related to lung metastasis of HCC.The expression of TNF was degraded in comparison to that in para-tumor tissues(P<0.001).The expression of key receptors in the TNF-dependent signaling pathway,TNFR1 and TNFR2,was higher in HCC tissues than in para-tumor tissues(P<0.001).TNF and TNFR1 showed no relationship with patients’outcomes,whereas elevated TNFR2 in tumor tissue was significantly associated with worse overall survival(OS)and increased recurrence risk(5-year OS rate:31.9%vs.62.5%,P<0.001).Notably,elevated TNFR2 levels were also associated with an increased risk of post-transplant lung metastasis(hazard ratio:1.146;P<0.001).Cox regression analysis revealed that TNFR2,Hangzhou criteria,age,and hepatitis B surface antigen were independent risk factors for post-transplant lung metastasis,and a novel nomogram was established accordingly.The nomogram achieved excellent prognostic efficiency(area under time-dependent receiver operating characteristic=0.755,concordance-index=0.779)and was superior to conventional models,such as the Milan criteria.Conclusions:TNFR2 is a potent prognostic biomarker for predicting post-transplant lung metastasis in patients with HCC.A nomogram incorporating TNFR2 deserves to be a helpful prognostic tool in liver transplantation for HCC.展开更多
Objective Pseudogenes are initially regarded as nonfunctional genomic sequences,but some pseudogenes regulate tumor initiation and progression by interacting with other genes to modulate their transcriptional activiti...Objective Pseudogenes are initially regarded as nonfunctional genomic sequences,but some pseudogenes regulate tumor initiation and progression by interacting with other genes to modulate their transcriptional activities.Olfactory receptor family 7 subfamily E member 47 pseudogene(OR7E47P)is expressed broadly in lung tissues and has been identified as a positive regulator in the tumor microenvironment(TME)of lung adenocarcinoma(LUAD).This study aimed to elucidate the correlation between OR7E47P and tumor immunity in lung squamous cell carcinoma(LUSC).Methods Clinical and molecular information from The Cancer Genome Atlas(TCGA)LUSC cohort was used to identify OR7E47P-related immune genes(ORIGs)by weighted gene correlation network analysis(WGCNA).Based on the ORIGs,2 OR7E47P clusters were identified using non-negative matrix factorization(NMF)clustering,and the stability of the clustering was tested by an extreme gradient boosting classifier(XGBoost).LASSO-Cox and stepwise regressions were applied to further select prognostic ORIGs and to construct a predictive model(ORPScore)for immunotherapy.The Botling cohorts and 8 immunotherapy cohorts(the Samstein,Braun,Jung,Gide,IMvigor210,Lauss,Van Allen,and Cho cohorts)were included as independent validation cohorts.Results OR7E47P expression was positively correlated with immune cell infiltration and enrichment of immune-related pathways in LUSC.A total of 57 ORIGs were identified to classify the patients into 2 OR7E47P clusters(Cluster 1 and Cluster 2)with distinct immune,mutation,and stromal programs.Compared to Cluster 1,Cluster 2 had more infiltration by immune and stromal cells,lower mutation rates of driver genes,and higher expression of immune-related proteins.The clustering performed well in the internal and 5 external validation cohorts.Based on the 7 ORIGs(HOPX,STX2,WFS,DUSP22,SLFN13,GGCT,and CCSER2),the ORPScore was constructed to predict the prognosis and the treatment response.In addition,the ORPScore was a better prognostic factor and correlated positively with the immunotherapeutic response in cancer patients.The area under the curve values ranged from 0.584 to 0.805 in the 6 independent immunotherapy cohorts.Conclusion Our study suggests a significant correlation between OR7E47P and TME modulation in LUSC.ORIGs can be applied to molecularly stratify patients,and the ORPScore may serve as a biomarker for clinical decision-making regarding individualized prognostication and immunotherapy.展开更多
BACKGROUND Mucoepidermoid carcinoma of the lung is a rare malignant tumor,accounting for 0.1%–0.2%of all lung malignancies.It is a primary salivary gland tumor of the lung.Surgical resection is the primary treatment ...BACKGROUND Mucoepidermoid carcinoma of the lung is a rare malignant tumor,accounting for 0.1%–0.2%of all lung malignancies.It is a primary salivary gland tumor of the lung.Surgical resection is the primary treatment for pulmonary mucoepidermoid carcinoma,for which there has been no standardized treatment strategy.This article reports a case of a young woman with pulmonary mucoepidermoid carcinoma with hemoptysis as the first symptom.CASE SUMMARY A 24-year-old female patient presented with"4 d of hemoptysis"as the chief complaint.She had no special history and denied any smoking or drinking history.Physical examination revealed that the vital signs were stable and scattered small wet rales were heard in the left lung.After admission,the lung tumor markers were checked,and no abnormalities were found.After completing the bronchoscopy,a spherical lesion was observed at the main bronchus 1.5 cm away from the protubercle,with obvious pulsation and little blood seepage on the surface,and histopathological biopsy results showed acute and chronic inflammation.She was transferred to the Department of Thoracic Surgery for surgical treatment on the 16th day after admission.After exclusion of surgical conjunctures,the patient underwent resection of the tumor in the left main bronchus with single-pore video-assisted thoracic surgery on the 19th day after admission.The postoperative histopathological biopsy results showed mucoepidermoid carcinoma of the lung.The patient and her family refused to complete genetic testing and she was discharged from the hospital on the 8th day after surgery.During the follow-up period,the patient experienced shortness of breath after feeling active and had no special discomfort.CONCLUSION We have documented a case of moderately differentiated mucoepidermoid lung cancer with hemoptysis as the first symptom to improve clinicians'understanding of the disease and provide a new dimension of thinking for its future diagnosis and treatment.展开更多
Gene expression profile of the lung adenosquamous carcinoma was characterized by using cDNA microarray chip containing 4 096 human genes. Among target genes, 508 differentially expressed genes were identified in adeno...Gene expression profile of the lung adenosquamous carcinoma was characterized by using cDNA microarray chip containing 4 096 human genes. Among target genes, 508 differentially expressed genes were identified in adenosquamous carcinoma of the lung, 232 genes were overexpressed and 276 genes were underexpressed. Among them, 92 genes are cell signals transduction genes, 34 genes are proto-oncogenes and tumor suppressor genes or cell cycle related genes or cell apoptosis related genes, 29 genes are cell skeleton genes, 28 genes are DNA synthesis, repair and recombination genes, 12 genes are DNA binding and transcription genes. These genes may be associated with the occurence and development of adenosquamous carinome of the lung. Key words lung carcinoma - adenosquamous carcinoma - microarray - gene expression profile CLC number R 734.2 Foundation item: Supported by the National Natural Science Foundation of China (39870305)Biography: YANG Fei(1972-), female, Ph. D candidate, research direction: etiology and pathogenesis of lung cancer.展开更多
Lung cancer metastasis is typically determined by histologic similarity between distant and primary lesions. Herein, we present a 70-year-old Japanese woman with an adenocarcinoma in her lung and a squamous cell carci...Lung cancer metastasis is typically determined by histologic similarity between distant and primary lesions. Herein, we present a 70-year-old Japanese woman with an adenocarcinoma in her lung and a squamous cell carcinoma in her femur; both tumors had an identical epidermal growth factor receptor mutation, G719 S. This indicated that both tumors had a common origin, despite their histologic dissimilarity. The tumor in the femur was thus identified genetically as a lung cancer metastasis. This case suggests that genetic analysis can determine whether a distant lesion is a lung cancermetastasis, particularly when the histology differs from that of the primary lesion.展开更多
BACKGROUND Urticaria is one of the most common causes of emergency room visits.It is defined as an acute inflammatory dermatosis,characterized by localized degranulation of mast cells,with consequent dermal microvascu...BACKGROUND Urticaria is one of the most common causes of emergency room visits.It is defined as an acute inflammatory dermatosis,characterized by localized degranulation of mast cells,with consequent dermal microvascular and formation of edematous and pruritic plaques called hives.Urticaria affects the skin and tissues of the superficial mucosa.Sometimes it is accompanied by angioedema,which is characterized by deeper edema of the dermis and subcutaneous cellular tissue known as the urticarial-angioedema syndrome.About 15%-25%of the general population has suffered at least one type of urticaria at some point during their lifetime and hyperpermeability estimated at 7.6%-16%and has experienced acute urticaria that is usually self-limited and spontaneously resolves without requiring medical attention.CASE SUMMARY We present the case of a young male patient who was referred to our department with a clinical picture of 4 mo of pruritus associated with hives of variable sizes,irregular borders,with interlesional confluence,that were non-painful,without involvement of the palms and soles of the feet but with a tendency to progression in a generalized manner.He had multiple emergency room visits and poor response to antihistamines and systemic corticosteroids.Imaging studies demonstrated nodules in the lower lingula segment,at the level of the greater fissure and in the anterior contour of the left anterior basal segment associated with parahiliar adenopathies in the absence of findings suggestive of infectious or autoimmune etiology.Segmental lobectomy was performed by thoracoscopy with resection of a lung nodule in the lingula and biopsy of the para-aortic mediastinal ganglion.The histopathological report showed the presence of poorly differentiated invasive adenocarcinoma with a solid morphological and acinar pattern with immunohistochemical description of lung tissue that expresses strong positive and diffuse reaction for thyroid transcription factor 1(TTF-1)with negativity to P40 for a histopathological diagnosis of malignant epithelial neoplasia with expression of infiltrating adenocarcinoma.Spontaneous chronic urticaria is considered possibly secondary to lung adenocarcinoma.CONCLUSION Chronic spontaneous urticaria is considered a paraneoplastic dermatosis with a controversial association in the literature.In the presented case,a young patient presented with chronic refractory urticaria and after an exhaustive clinical work-up was found to have a diagnosis of poorly differentiated lung adenocarcinoma with high expression of TTF-1.According to the Curth criteria,the urticaria presented by the patient is related to the oncological diagnosis.In addition,the high expression of TTF-1 documented in this case could be acting as an autoantigen that would cause chronic spontaneous urticaria.Further research evaluating a causal relationship between the TFF-1 protein and urticaria in lung cancer is needed.展开更多
<b>Background:</b> Several previous researchers have investigated the prognostic value of serum tumor markers, especially carcinoembryonic antigen (CEA). Only a limited number of studies reported the usefu...<b>Background:</b> Several previous researchers have investigated the prognostic value of serum tumor markers, especially carcinoembryonic antigen (CEA). Only a limited number of studies reported the usefulness of serum tumor markers for lung squamous cell carcinoma (SQ). We aimed to examine the significance of serum tumor markers for lung SQ. <b>Methods:</b> Eighty-five lung SQ patients who underwent surgery and followed more than 5-year were included. The ratios of 5-year survivors to all patients in groups with several clinicopathologic factors, including tumor markers, were compared. We also compared the clinicopathologic factors between central type and peripheral type SQ. <b>Results:</b> The majority of patients were male gender and current/ former smokers. Age, pN status, cytokeratin-19 fragment (CYFRA 21-1), squamous cell carcinoma antigen (SCC), and comorbid interstitial pneumonia (IP) were associated with the ratio of 5-year survivors significantly. When patients were compared based on tumor location, high p-stage and CYFRA 21-1 were related to central type SQ. <b>Conclusion:</b> Both SCC and CYFRA 21-1 appeared to be useful prognostic markers for patients with lung SQ. Furthermore, CYFRA 21-1 was related to central type SQ.展开更多
Objective:To study the relevance of EGFR gene mutation with pathological features and prognosis in patients with non-small-cell lung carcinoma.Methods:A total of 297 patients from July 2009 to May 2013 were chosen as ...Objective:To study the relevance of EGFR gene mutation with pathological features and prognosis in patients with non-small-cell lung carcinoma.Methods:A total of 297 patients from July 2009 to May 2013 were chosen as objects.EGFR gene mutation were detected with fluorescence quantitative PCR.Relevance of EGFR gene mutation with clinical and pathological features was analyzed,and the prognosis of EGFR- mutant-patients and that of EGFR- wide type-patients was compared.Results:In 297 patients.136(45.79%) showed EGFR gene mutation.EGFR gene mutation had no significant relevance with age.gender,smoking history,family history of cancer and clinical stage(P>0.05);there was significant relevance between EGFR gene mutation and blood type,pathologic types,differentiation and diameter of cancer(P<0.05).The difference between prognosis of EGFR- mutant-patients and that of EGFR- wide type-patients was statistical significance(P<0.05).Conclusions:EGFR gene mutation has significant relevance with pathological features,the prognosis of EGFRmutant-paticnts is better than that of EGFR- wide type-patients.展开更多
Non-small-cell lung carcinoma (NSCLC) is one of the most frequently diagnosed malignancies worldwide. Previous studies have shown that microRNA-449b (miR-449b) functions as a tumor suppressor in many cancers. Howe...Non-small-cell lung carcinoma (NSCLC) is one of the most frequently diagnosed malignancies worldwide. Previous studies have shown that microRNA-449b (miR-449b) functions as a tumor suppressor in many cancers. However, the role of miR- 449b in NSCLC is still unknown. In the present study, miR-449b was significantly down- regulated in NSCLC samples and cell lines. Bioinformatics analysis revealed that 3'-UTR region of leucine rich repeat containing G protein-coupled receptor 4 (LGR4) mRNA had putative complementary sequences to miR-449b, which was further confirmed by the luciferase assay. Western blotting showed that restoration of miR-449b in NSCLC cells decreased the expression of LGR4. Interestingly, over-expression of miR-449b inhibited growth and invasion of NSCLC cells in vitro. Furthermore, ectopic expression of LGR4 reversed miR-449b-suppressed proliferation and invasion of NSCLC cells. Therefore, the data of the present study demonstrate that miR-449b inhibits tumor cell growth and invasion by targeting LGR4 in NSCLC.展开更多
Objective:To study the mechanism of effect of miR-21 via Wnt/ β-catenin signaling pathway in human A549 lung cancer cells and Lewis lung carcinoma in mice.Methods:The effect of miR-21 on A549 cells were detected by M...Objective:To study the mechanism of effect of miR-21 via Wnt/ β-catenin signaling pathway in human A549 lung cancer cells and Lewis lung carcinoma in mice.Methods:The effect of miR-21 on A549 cells were detected by MTT method.MiR-21 expression levels were overexpressed or inhibited in A549 cells by transfecting with miR-21 mimics or inhibitors.Correlation among key molecules(Wnt1,β-catenin.CyclinD1 and miR-21) of mRNA and protein levels in Wnt/β-catenin signaling pathway were studied by Real-time PCR and Western blot hybridization assay.Invasive ability of A549 cells was determined via Transwell chamber cell invasion assay;the role of miR-21 in A549 cells was explored via the Wnt/β-catenin signaling pathway.A Lewis lung carcinoma animal model was established to detect miR-21 expressions in tumor animals and controlled animal tissues,and verify expression changes of the above moleculesin the Wnt / β-catenin signaling pathway was determined in the animal level.Results:MTT assay results showed that miR-21 overexpression could markedly enhance cell absorbance value;that is,miR-21 could increase the ability proliferation of A549 cells.β-catenin and CyclinD1 expression levels were significantly higher in miR-21 mimic transfected cells(P<0.05),and Wnt 1 gene had no significant change.Wnt 1,β-catenin and CyclinD1 gene expression showed no significant change when miR-21 expression was suppressed,compared with controls.After cells were transfected with miR-21 mimics,cell invasion assay revealed that the perforated cells was significantly higher than the perforated cells in the control group(P<0.01).Lewis lung assay revealed that miR-21 expression levels in the Lewis lung carcinoma were significantly higher;and at the same time.Wnt1,β-catenin and CyclinD1 gene expression levels were significantly increased,compared to controls.Conclusions:In A549 human lung cancer cells and Lewis lung carcinoma in mice,key molecules β-catenin and CyclinD1 of miR-21 expressions and the Wnt/ β-catenin signaling pathway are positively correlated.展开更多
Abnormally elevated activity of ornithine decarboxylase (ODC), and subsequent polyamine accumulation are intimately associated with the genesis.development and metastasis of cancer. In the present study, to control th...Abnormally elevated activity of ornithine decarboxylase (ODC), and subsequent polyamine accumulation are intimately associated with the genesis.development and metastasis of cancer. In the present study, to control the growth of tumor cells, ODC antisense RNA was used to transfect human lung squamous carcinoma cell line LTEP-78. Compared with the parental cells, growth of the antisense transfected LTEP-78 cells arrested in G0/Gl phase and colony formation in soft agarose and tumorigenicity in nude mice were significantly reduced. Nucleic acid hybridization demonstrated that the transfectants expressed a high level of ODC antisense RNA and a significantly reduced level of endogenous ODC mRNA.The results suggest that the reversion of malignant phenotypes of human lung squamous carcinoma cells transfected with ODC antisense RNA is associated with the inhibition of polyamine biosynthesis.展开更多
Our previous study has proven that tea polyphenol has a role in lung neoplasms. The present communication was to investage the anti-proliferation effect of tea polyphenol on the PG cells, which was a high metastatic h...Our previous study has proven that tea polyphenol has a role in lung neoplasms. The present communication was to investage the anti-proliferation effect of tea polyphenol on the PG cells, which was a high metastatic human lung carcinoma cell line, by 3-(4,5)-dimethylthiahiazo(-z-y1)-3,5-diphenytetrazoliumromide (MTT) cell viability assay, and to study the change of intracellular calcium concentration, connexin43 (Cx43) expression, gap junctional intercellular communication (GJIC) and cell cycle distribution after the tea polyphenol treatment by laser scanning confocal microscopy and flow cytometry. The results showed that 1) tea polyphenol could kill the PG cells in a dose-depent manner via inhibiting the PG cell proliferation and blocking the PG cell cycle progression staying in G0/G1 phase and not transfering in S and G2/M phases to reduce the PG cell proliferation index;2) the increases of intracellular calcium concentration, GJIC and Cx43 expression were related with the tea polyphenol doses. The data suggested that tea polyphenol could inhibit the growth of PG cells, which mechanism was associated with the up-regulation of GJIC.展开更多
Objective: To investigate the anti-tumor effect of procyanidin (WeiMaiNing, WMN) on a murine Lewis lung carcinoma cell line (3LL) and the influence on the cell cycle. Methods: The inhibitory rate of 3LL growth was det...Objective: To investigate the anti-tumor effect of procyanidin (WeiMaiNing, WMN) on a murine Lewis lung carcinoma cell line (3LL) and the influence on the cell cycle. Methods: The inhibitory rate of 3LL growth was detected in the model of murine Lewis lung carcinoma. The effect of the drug on 3LL cell cycle and the influence of the drug on the expression of cyclin D1 protein were investigated by flow cytometry, immunohistochemical staining. Results: The inhibitory rates of WMN in 3LL were 19.14%, 33.59% and 51.56% respectively at dosages 100 mg穔g-1穌-1, 150 mg穔g-1穌-1 and 250 mg穔g-1穌-1. The inhibitory effect was in a dose-dependent manner. We found WMN significantly increased (P<0.01) the number of 3LL cells in G0-G1 phase (35.97% vs. 27.2% at 150 mg穔g-1穌-1 WMN; 40.10% vs. 27.2% at 250 mg穔g-1穌-1 WMN) and decreased the expression of cyclin D1, PCNA protein. Conclusion: WeiMaiNing inhibits the growth of 3LL cells in vivo by decreasing the expression of PCNA and cyclin D1, blocking the cells in G0-G1 phase and preventing the cells transition from G1 to S phase while DNA is replicated.展开更多
文摘BACKGROUND Epidermal growth factor receptor tyrosine kinase inhibitors(EGFR-TKIs)significantly improve the survival of patients with Epidermal growth factor receptor(EGFR)sensitive mutations in non-small cell lung cancer(NSCLC).CASE SUMMARY A 67-year-old female patient in advanced lung adenocarcinoma suffered from drug resistance after EGFR-TKIs treatment.Secondary pathological tissue biopsy confirmed squamous cell carcinoma(SCC)transformation.Patients inevitably encountered drug resistance issues after receiving EGFR-TKIs treatment for a certain period of time,while EGFR-TKIs can significantly improve the survival of patients with EGFR-sensitive mutations in NSCLC.Notably,EGFR-TKIs resistance includes primary and acquired.Pathological transformation is one of the mechanisms of acquired resistance in EGFR-TKIs,with SCC transformation being relatively rare.Our results provide more detailed results of the patient’s diagnosis and treatment process on SCC transformation after EGFR-TKIs treatment for lung adenocarcinoma.CONCLUSION Squamous cell carcinoma transformation is one of the acquired resistance mechanisms of EGFR-TKIs in advanced lung adenocarcinoma with EGFR mutations.
基金supported by the Major Program of National Natural Science Foundation of China (No. 91959205)National Natural Science Foundation of China (No. 82141117)+3 种基金The Capital’s Funds for Health Improvement and Research (CFH) (No. 2022-2-1023)Beijing Xisike Clinical Oncology Research Foundation Ypierrefabre (No. 202101-0099)Beijing Municipal Administration of Hospitals Incubating Program (No. PX2020045)Science Foundation of Peking University Cancer Hospital (No. 2020-4)。
文摘Objective: There is an ongoing debate about whether the management of gastroenteropancreatic(GEP)neuroendocrine carcinoma(NEC) should follow the guidelines of small-cell lung cancer(SCLC). We aim to identify the genetic differences of GEPNEC and its counterpart.Methods: We recruited GEPNEC patients as the main cohort, with lung NEC and digestive adenocarcinomas as comparative cohorts. All patients undergone next-generation sequencing(NGS). Different gene alterations were compared and analyzed between GEPNEC and lung NEC(LNEC), GEPNEC and adenocarcinoma to yield the remarkable genes.Results: We recruited 257 patients, including 99 GEPNEC, 57 LNEC, and 101 digestive adenocarcinomas.Among the mutations, KRAS, RB1, TERT, IL7R, and CTNNB1 were found to have different gene alterations between GEPNEC and LNEC samples. Specific genes for each site were revealed: gastric NEC(TERT amplification),colorectal NEC(KRAS mutation), and bile tract NEC(ARID1A mutation). The gene disparities between small-cell NEC(SCNEC) and large-cell NEC(LCNEC) were KEAP1 and CDH1. Digestive adenocarcinoma was also compared with GEPNEC and suggested RB1, APC, and KRAS as significant genes. The TP53/RB1 mutation pattern was associated with first-line effectiveness. Putative targetable genes and biomarkers in GEPNEC were identified in22.2% of the patients, and they had longer progression-free survival(PFS) upon targetable treatment [12.5 months vs. 3.0 months, HR=0.40(0.21-0.75), P=0.006].Conclusions: This work demonstrated striking gene distinctions in GEPNEC compared with LNEC and adenocarcinoma and their clinical utility.
文摘Objective:Lung squamous cell carcinoma(LUSC)is associated with a low survival rate.Evidence suggests that bone morphogenetic proteins(BMPs)and their receptors(BMPRs)play crucial roles in tumorigenesis and progression.However,a comprehensive analysis of their role in LUSC is lacking.Our study aimed to explore the relationship between BMPs/BMPRs expression levels and the tumorigenesis and prognosis of LUSC.Methods:The“R/Limma”package was utilized to analyze the differential expression characteristics of BMPs/BMPRs in LUSC,using data from TCGA,GTEx,and GEO databases.Concurrently,the“survminer”packages were employed to investigate their prognostic value and correlation with clinical features in LUSC.The core gene associated with LUSC progression was further explored through weighted gene correlation network analysis(WGCNA).LASSO analysis was conducted to construct a prognostic risk model for LUSC.Clinical specimens were examined by immunohistochemical analysis to confirm the diagnostic value in LUSC.Furthermore,based on the tumor immune estimation resource database and tumor-immune system interaction database,the role of the core gene in the tumor microenvironment of LUSC was explored.Results:GDF10 had a significant correlation only with the pathological T stage of LUSC,and the protein expression level of GDF10 decreased with the tumorigenesis of LUSC.A prognostic risk model was constructed with GDF10 as the core gene and 5 hub genes(HRASLS,HIST1H2BH,FLRT3,CHEK2,and ALPL)for LUSC.GDF10 showed a significant positive correlation with immune cell infiltration and immune checkpoint expression.Conclusion:GDF10 might serve as a diagnostic biomarker reflecting the tumorigenesis of LUSC and regulating the tumor immune microenvironment to guide more effective treatment for LUSC.
基金Supported by Chronic Disease Management Center for Thoracic Tumor,The Affiliated Hospital of Medical School of Ningbo University,No.2021MGZX-07Natural Science Foundation of Ningbo,No.2019A610238.
文摘BACKGROUND Patients with type 2 diabetes mellitus(T2DM)have large fluctuations in blood glucose(BG),abnormal metabolic function and low immunity to varying degrees,which increases the risk of malignant tumor diseases and affects the efficacy of tumor chemotherapy.Controlling hyperglycemia may have important therapeutic implications for cancer patients.AIM To clarify the influence of BG fluctuations on chemotherapy efficacy and safety in T2DM patients complicated with lung carcinoma(LC).METHODS The clinical data of 60 T2DM+LC patients who presented to the First Affiliated Hospital of Ningbo University between January 2019 and January 2021 were retrospectively analyzed.All patients underwent chemotherapy and were grouped as a control group(CG;normal BG fluctuation with a mean fluctuation<3.9 mmol/L)and an observation group(OG;high BG fluctuation with a mean fluctuation≥3.9 mmol/L)based on their BG fluctuations,with 30 cases each.BGrelated indices,tumor markers,serum inflammatory cytokines and adverse reactions were comparatively analyzed.Pearson correlation analysis was performed to analyze the correlation between BG fluctuations and tumor markers.RESULTS The fasting blood glucose and 2-hour postprandial blood glucose levels in the OG were notably elevated compared with those in the CG,together with markedly higher mean amplitude of glycemic excursions(MAGE),mean of daily differences,largest amplitude of glycemic excursions and standard deviation of blood glucose(P<0.05).In addition,the OG exhibited evidently higher levels of carbohydrate antigen 19-9,carbohydrate antigen 125,carcinoembryonic antigen,neuron-specific enolase,cytokeratin 19,tumor necrosis factor-α,interleukin-6,and highsensitivity C-reactive protein than the CG(P<0.05).Pearson analysis revealed a positive association of MAGE with serum tumor markers.The incidence of adverse reactions was significantly higher in the OG than in the CG(P<0.05).CONCLUSION The greater the BG fluctuation in LC patients after chemotherapy,the more unfavorable the therapeutic effect of chemotherapy;the higher the level of tumor markers and inflammatory cytokines,the more adverse reactions the patient experiences.
文摘BACKGROUND Synchronous multiple lung cancers are rare and refer to the simultaneous presence of two or more primary lung tumors,which present significant challenges in terms of diagnosis and treatment.CASE SUMMARY We report a case of multiple synchronous lung cancers with hilar lymph node metastasis of small cell carcinoma of unknown origin in a 73-year-old man.Transbronchial lung biopsy revealed squamous cell carcinoma.Although enlargement of lymph node 12u was detected,no distant metastases were observed.The patient was preoperatively diagnosed with T1cN0M0 and underwent thoracoscopic right upper lobectomy with nodal dissection(ND2a).Based on histopathological findings,the primary lesion was squamous cell carcinoma.A microinvasive adenocarcinoma was also observed on the cranial side of the primary lesion.Tumors were detected in two resected lymph nodes(#12u and#11s).Both tumors were pathologically diagnosed as small cell carcinomas.The primary lesion of the small cell carcinoma could not be identified even by whole-body imaging;however,chemotherapy was initiated for hilar lymph node metastasis of the small cell carcinoma of unknown origin.CONCLUSION Multiple synchronous lung cancers can be accompanied by hilar lymph node metastasis of small cell carcinomas of unknown origin.
文摘BACKGROUND Primary pulmonary lymphoepithelioma-like carcinoma(PPLELC)is an uncommon subtype of squamous cell carcinoma(SCC)of the lung,closely associated with Epstein-Barr virus(EBV)infection.The pathological features of PPLELC closely resemble those of SCC,which makes it prone to misdiagnosis.Surgical intervention constitutes the primary treatment approach for PPLELC.CASE SUMMARY This report describes a 44-year-old woman who was hospitalized for 1 mo due to left chest pain.Computed tomography revealed a mass shadow in the anterior basal segment of the left lower lobe,and a subsequent needle biopsy suggested SCC.The patient underwent radical tumor resection in the lower left lobe of the lung,and postoperative pathological examination indicated lymphoepithelial carcinoma,and the test for EBV encoded small RNA was positive.Following surgery,the patient was scheduled to receive four cycles of adjuvant chemotherapy,using the paclitaxel+carboplatin regimen,but the patient refused further treatment.CONCLUSION PPLELC is an exceptionally rare subtype of lung SCC and is prone to misdiagnosis.
基金the National Key Research and Development Program of China(No.2021YFA1100500)the Major Research Plan of the National Natural Science Foundation of China(No.92159202)+2 种基金the Key Research&Development Plan of Zhejiang Province(No.2019C03050),the Key Research&Development Plan of Zhejiang Province(No.2021C03118)National S&T Major Project(No.2017ZX10203205)the Health Science&Technology Plan of Zhejiang Province(No.2022RC060)。
文摘Objective:Lung metastasis is a common and fatal complication of liver transplantation for hepatocellular carcinoma(HCC).The precise prediction of post-transplant lung metastasis in the early phase is of great value.Methods:The mRNA profiles of primary and paired lung metastatic lesions were analyzed to determine key signaling pathways.We enrolled 241 HCC patients who underwent liver transplantation from three centers.Tissue microarrays were used to evaluate the prognostic capacity of tumor necrosis factor(TNF),tumor necrosis factor receptor 1(TNFR1),and TNFR2,particularly for post-transplant lung metastasis.Results:Comparison of primary and lung metastatic lesions revealed that the TNF-dependent signaling pathway was related to lung metastasis of HCC.The expression of TNF was degraded in comparison to that in para-tumor tissues(P<0.001).The expression of key receptors in the TNF-dependent signaling pathway,TNFR1 and TNFR2,was higher in HCC tissues than in para-tumor tissues(P<0.001).TNF and TNFR1 showed no relationship with patients’outcomes,whereas elevated TNFR2 in tumor tissue was significantly associated with worse overall survival(OS)and increased recurrence risk(5-year OS rate:31.9%vs.62.5%,P<0.001).Notably,elevated TNFR2 levels were also associated with an increased risk of post-transplant lung metastasis(hazard ratio:1.146;P<0.001).Cox regression analysis revealed that TNFR2,Hangzhou criteria,age,and hepatitis B surface antigen were independent risk factors for post-transplant lung metastasis,and a novel nomogram was established accordingly.The nomogram achieved excellent prognostic efficiency(area under time-dependent receiver operating characteristic=0.755,concordance-index=0.779)and was superior to conventional models,such as the Milan criteria.Conclusions:TNFR2 is a potent prognostic biomarker for predicting post-transplant lung metastasis in patients with HCC.A nomogram incorporating TNFR2 deserves to be a helpful prognostic tool in liver transplantation for HCC.
基金the Wuhan University Medical Faculty Innovation Seed Fund Cultivation Project(No.TFZZ2018025)the Chen Xiao-ping Foundation for the Development of Science and Technology of Hubei Province(No.CXPJJH12000001-2020313)the National Natural Science Foundation of China(No.81670123 and No.81670144).
文摘Objective Pseudogenes are initially regarded as nonfunctional genomic sequences,but some pseudogenes regulate tumor initiation and progression by interacting with other genes to modulate their transcriptional activities.Olfactory receptor family 7 subfamily E member 47 pseudogene(OR7E47P)is expressed broadly in lung tissues and has been identified as a positive regulator in the tumor microenvironment(TME)of lung adenocarcinoma(LUAD).This study aimed to elucidate the correlation between OR7E47P and tumor immunity in lung squamous cell carcinoma(LUSC).Methods Clinical and molecular information from The Cancer Genome Atlas(TCGA)LUSC cohort was used to identify OR7E47P-related immune genes(ORIGs)by weighted gene correlation network analysis(WGCNA).Based on the ORIGs,2 OR7E47P clusters were identified using non-negative matrix factorization(NMF)clustering,and the stability of the clustering was tested by an extreme gradient boosting classifier(XGBoost).LASSO-Cox and stepwise regressions were applied to further select prognostic ORIGs and to construct a predictive model(ORPScore)for immunotherapy.The Botling cohorts and 8 immunotherapy cohorts(the Samstein,Braun,Jung,Gide,IMvigor210,Lauss,Van Allen,and Cho cohorts)were included as independent validation cohorts.Results OR7E47P expression was positively correlated with immune cell infiltration and enrichment of immune-related pathways in LUSC.A total of 57 ORIGs were identified to classify the patients into 2 OR7E47P clusters(Cluster 1 and Cluster 2)with distinct immune,mutation,and stromal programs.Compared to Cluster 1,Cluster 2 had more infiltration by immune and stromal cells,lower mutation rates of driver genes,and higher expression of immune-related proteins.The clustering performed well in the internal and 5 external validation cohorts.Based on the 7 ORIGs(HOPX,STX2,WFS,DUSP22,SLFN13,GGCT,and CCSER2),the ORPScore was constructed to predict the prognosis and the treatment response.In addition,the ORPScore was a better prognostic factor and correlated positively with the immunotherapeutic response in cancer patients.The area under the curve values ranged from 0.584 to 0.805 in the 6 independent immunotherapy cohorts.Conclusion Our study suggests a significant correlation between OR7E47P and TME modulation in LUSC.ORIGs can be applied to molecularly stratify patients,and the ORPScore may serve as a biomarker for clinical decision-making regarding individualized prognostication and immunotherapy.
文摘BACKGROUND Mucoepidermoid carcinoma of the lung is a rare malignant tumor,accounting for 0.1%–0.2%of all lung malignancies.It is a primary salivary gland tumor of the lung.Surgical resection is the primary treatment for pulmonary mucoepidermoid carcinoma,for which there has been no standardized treatment strategy.This article reports a case of a young woman with pulmonary mucoepidermoid carcinoma with hemoptysis as the first symptom.CASE SUMMARY A 24-year-old female patient presented with"4 d of hemoptysis"as the chief complaint.She had no special history and denied any smoking or drinking history.Physical examination revealed that the vital signs were stable and scattered small wet rales were heard in the left lung.After admission,the lung tumor markers were checked,and no abnormalities were found.After completing the bronchoscopy,a spherical lesion was observed at the main bronchus 1.5 cm away from the protubercle,with obvious pulsation and little blood seepage on the surface,and histopathological biopsy results showed acute and chronic inflammation.She was transferred to the Department of Thoracic Surgery for surgical treatment on the 16th day after admission.After exclusion of surgical conjunctures,the patient underwent resection of the tumor in the left main bronchus with single-pore video-assisted thoracic surgery on the 19th day after admission.The postoperative histopathological biopsy results showed mucoepidermoid carcinoma of the lung.The patient and her family refused to complete genetic testing and she was discharged from the hospital on the 8th day after surgery.During the follow-up period,the patient experienced shortness of breath after feeling active and had no special discomfort.CONCLUSION We have documented a case of moderately differentiated mucoepidermoid lung cancer with hemoptysis as the first symptom to improve clinicians'understanding of the disease and provide a new dimension of thinking for its future diagnosis and treatment.
文摘Gene expression profile of the lung adenosquamous carcinoma was characterized by using cDNA microarray chip containing 4 096 human genes. Among target genes, 508 differentially expressed genes were identified in adenosquamous carcinoma of the lung, 232 genes were overexpressed and 276 genes were underexpressed. Among them, 92 genes are cell signals transduction genes, 34 genes are proto-oncogenes and tumor suppressor genes or cell cycle related genes or cell apoptosis related genes, 29 genes are cell skeleton genes, 28 genes are DNA synthesis, repair and recombination genes, 12 genes are DNA binding and transcription genes. These genes may be associated with the occurence and development of adenosquamous carinome of the lung. Key words lung carcinoma - adenosquamous carcinoma - microarray - gene expression profile CLC number R 734.2 Foundation item: Supported by the National Natural Science Foundation of China (39870305)Biography: YANG Fei(1972-), female, Ph. D candidate, research direction: etiology and pathogenesis of lung cancer.
文摘Lung cancer metastasis is typically determined by histologic similarity between distant and primary lesions. Herein, we present a 70-year-old Japanese woman with an adenocarcinoma in her lung and a squamous cell carcinoma in her femur; both tumors had an identical epidermal growth factor receptor mutation, G719 S. This indicated that both tumors had a common origin, despite their histologic dissimilarity. The tumor in the femur was thus identified genetically as a lung cancer metastasis. This case suggests that genetic analysis can determine whether a distant lesion is a lung cancermetastasis, particularly when the histology differs from that of the primary lesion.
文摘BACKGROUND Urticaria is one of the most common causes of emergency room visits.It is defined as an acute inflammatory dermatosis,characterized by localized degranulation of mast cells,with consequent dermal microvascular and formation of edematous and pruritic plaques called hives.Urticaria affects the skin and tissues of the superficial mucosa.Sometimes it is accompanied by angioedema,which is characterized by deeper edema of the dermis and subcutaneous cellular tissue known as the urticarial-angioedema syndrome.About 15%-25%of the general population has suffered at least one type of urticaria at some point during their lifetime and hyperpermeability estimated at 7.6%-16%and has experienced acute urticaria that is usually self-limited and spontaneously resolves without requiring medical attention.CASE SUMMARY We present the case of a young male patient who was referred to our department with a clinical picture of 4 mo of pruritus associated with hives of variable sizes,irregular borders,with interlesional confluence,that were non-painful,without involvement of the palms and soles of the feet but with a tendency to progression in a generalized manner.He had multiple emergency room visits and poor response to antihistamines and systemic corticosteroids.Imaging studies demonstrated nodules in the lower lingula segment,at the level of the greater fissure and in the anterior contour of the left anterior basal segment associated with parahiliar adenopathies in the absence of findings suggestive of infectious or autoimmune etiology.Segmental lobectomy was performed by thoracoscopy with resection of a lung nodule in the lingula and biopsy of the para-aortic mediastinal ganglion.The histopathological report showed the presence of poorly differentiated invasive adenocarcinoma with a solid morphological and acinar pattern with immunohistochemical description of lung tissue that expresses strong positive and diffuse reaction for thyroid transcription factor 1(TTF-1)with negativity to P40 for a histopathological diagnosis of malignant epithelial neoplasia with expression of infiltrating adenocarcinoma.Spontaneous chronic urticaria is considered possibly secondary to lung adenocarcinoma.CONCLUSION Chronic spontaneous urticaria is considered a paraneoplastic dermatosis with a controversial association in the literature.In the presented case,a young patient presented with chronic refractory urticaria and after an exhaustive clinical work-up was found to have a diagnosis of poorly differentiated lung adenocarcinoma with high expression of TTF-1.According to the Curth criteria,the urticaria presented by the patient is related to the oncological diagnosis.In addition,the high expression of TTF-1 documented in this case could be acting as an autoantigen that would cause chronic spontaneous urticaria.Further research evaluating a causal relationship between the TFF-1 protein and urticaria in lung cancer is needed.
文摘<b>Background:</b> Several previous researchers have investigated the prognostic value of serum tumor markers, especially carcinoembryonic antigen (CEA). Only a limited number of studies reported the usefulness of serum tumor markers for lung squamous cell carcinoma (SQ). We aimed to examine the significance of serum tumor markers for lung SQ. <b>Methods:</b> Eighty-five lung SQ patients who underwent surgery and followed more than 5-year were included. The ratios of 5-year survivors to all patients in groups with several clinicopathologic factors, including tumor markers, were compared. We also compared the clinicopathologic factors between central type and peripheral type SQ. <b>Results:</b> The majority of patients were male gender and current/ former smokers. Age, pN status, cytokeratin-19 fragment (CYFRA 21-1), squamous cell carcinoma antigen (SCC), and comorbid interstitial pneumonia (IP) were associated with the ratio of 5-year survivors significantly. When patients were compared based on tumor location, high p-stage and CYFRA 21-1 were related to central type SQ. <b>Conclusion:</b> Both SCC and CYFRA 21-1 appeared to be useful prognostic markers for patients with lung SQ. Furthermore, CYFRA 21-1 was related to central type SQ.
基金supported by Project Development Plan of Yantai city Science and Technology(No.2013WS229)
文摘Objective:To study the relevance of EGFR gene mutation with pathological features and prognosis in patients with non-small-cell lung carcinoma.Methods:A total of 297 patients from July 2009 to May 2013 were chosen as objects.EGFR gene mutation were detected with fluorescence quantitative PCR.Relevance of EGFR gene mutation with clinical and pathological features was analyzed,and the prognosis of EGFR- mutant-patients and that of EGFR- wide type-patients was compared.Results:In 297 patients.136(45.79%) showed EGFR gene mutation.EGFR gene mutation had no significant relevance with age.gender,smoking history,family history of cancer and clinical stage(P>0.05);there was significant relevance between EGFR gene mutation and blood type,pathologic types,differentiation and diameter of cancer(P<0.05).The difference between prognosis of EGFR- mutant-patients and that of EGFR- wide type-patients was statistical significance(P<0.05).Conclusions:EGFR gene mutation has significant relevance with pathological features,the prognosis of EGFRmutant-paticnts is better than that of EGFR- wide type-patients.
文摘Non-small-cell lung carcinoma (NSCLC) is one of the most frequently diagnosed malignancies worldwide. Previous studies have shown that microRNA-449b (miR-449b) functions as a tumor suppressor in many cancers. However, the role of miR- 449b in NSCLC is still unknown. In the present study, miR-449b was significantly down- regulated in NSCLC samples and cell lines. Bioinformatics analysis revealed that 3'-UTR region of leucine rich repeat containing G protein-coupled receptor 4 (LGR4) mRNA had putative complementary sequences to miR-449b, which was further confirmed by the luciferase assay. Western blotting showed that restoration of miR-449b in NSCLC cells decreased the expression of LGR4. Interestingly, over-expression of miR-449b inhibited growth and invasion of NSCLC cells in vitro. Furthermore, ectopic expression of LGR4 reversed miR-449b-suppressed proliferation and invasion of NSCLC cells. Therefore, the data of the present study demonstrate that miR-449b inhibits tumor cell growth and invasion by targeting LGR4 in NSCLC.
基金supported by Key Project of Zhejing Board(2012ZA032)
文摘Objective:To study the mechanism of effect of miR-21 via Wnt/ β-catenin signaling pathway in human A549 lung cancer cells and Lewis lung carcinoma in mice.Methods:The effect of miR-21 on A549 cells were detected by MTT method.MiR-21 expression levels were overexpressed or inhibited in A549 cells by transfecting with miR-21 mimics or inhibitors.Correlation among key molecules(Wnt1,β-catenin.CyclinD1 and miR-21) of mRNA and protein levels in Wnt/β-catenin signaling pathway were studied by Real-time PCR and Western blot hybridization assay.Invasive ability of A549 cells was determined via Transwell chamber cell invasion assay;the role of miR-21 in A549 cells was explored via the Wnt/β-catenin signaling pathway.A Lewis lung carcinoma animal model was established to detect miR-21 expressions in tumor animals and controlled animal tissues,and verify expression changes of the above moleculesin the Wnt / β-catenin signaling pathway was determined in the animal level.Results:MTT assay results showed that miR-21 overexpression could markedly enhance cell absorbance value;that is,miR-21 could increase the ability proliferation of A549 cells.β-catenin and CyclinD1 expression levels were significantly higher in miR-21 mimic transfected cells(P<0.05),and Wnt 1 gene had no significant change.Wnt 1,β-catenin and CyclinD1 gene expression showed no significant change when miR-21 expression was suppressed,compared with controls.After cells were transfected with miR-21 mimics,cell invasion assay revealed that the perforated cells was significantly higher than the perforated cells in the control group(P<0.01).Lewis lung assay revealed that miR-21 expression levels in the Lewis lung carcinoma were significantly higher;and at the same time.Wnt1,β-catenin and CyclinD1 gene expression levels were significantly increased,compared to controls.Conclusions:In A549 human lung cancer cells and Lewis lung carcinoma in mice,key molecules β-catenin and CyclinD1 of miR-21 expressions and the Wnt/ β-catenin signaling pathway are positively correlated.
文摘Abnormally elevated activity of ornithine decarboxylase (ODC), and subsequent polyamine accumulation are intimately associated with the genesis.development and metastasis of cancer. In the present study, to control the growth of tumor cells, ODC antisense RNA was used to transfect human lung squamous carcinoma cell line LTEP-78. Compared with the parental cells, growth of the antisense transfected LTEP-78 cells arrested in G0/Gl phase and colony formation in soft agarose and tumorigenicity in nude mice were significantly reduced. Nucleic acid hybridization demonstrated that the transfectants expressed a high level of ODC antisense RNA and a significantly reduced level of endogenous ODC mRNA.The results suggest that the reversion of malignant phenotypes of human lung squamous carcinoma cells transfected with ODC antisense RNA is associated with the inhibition of polyamine biosynthesis.
文摘Our previous study has proven that tea polyphenol has a role in lung neoplasms. The present communication was to investage the anti-proliferation effect of tea polyphenol on the PG cells, which was a high metastatic human lung carcinoma cell line, by 3-(4,5)-dimethylthiahiazo(-z-y1)-3,5-diphenytetrazoliumromide (MTT) cell viability assay, and to study the change of intracellular calcium concentration, connexin43 (Cx43) expression, gap junctional intercellular communication (GJIC) and cell cycle distribution after the tea polyphenol treatment by laser scanning confocal microscopy and flow cytometry. The results showed that 1) tea polyphenol could kill the PG cells in a dose-depent manner via inhibiting the PG cell proliferation and blocking the PG cell cycle progression staying in G0/G1 phase and not transfering in S and G2/M phases to reduce the PG cell proliferation index;2) the increases of intracellular calcium concentration, GJIC and Cx43 expression were related with the tea polyphenol doses. The data suggested that tea polyphenol could inhibit the growth of PG cells, which mechanism was associated with the up-regulation of GJIC.
文摘Objective: To investigate the anti-tumor effect of procyanidin (WeiMaiNing, WMN) on a murine Lewis lung carcinoma cell line (3LL) and the influence on the cell cycle. Methods: The inhibitory rate of 3LL growth was detected in the model of murine Lewis lung carcinoma. The effect of the drug on 3LL cell cycle and the influence of the drug on the expression of cyclin D1 protein were investigated by flow cytometry, immunohistochemical staining. Results: The inhibitory rates of WMN in 3LL were 19.14%, 33.59% and 51.56% respectively at dosages 100 mg穔g-1穌-1, 150 mg穔g-1穌-1 and 250 mg穔g-1穌-1. The inhibitory effect was in a dose-dependent manner. We found WMN significantly increased (P<0.01) the number of 3LL cells in G0-G1 phase (35.97% vs. 27.2% at 150 mg穔g-1穌-1 WMN; 40.10% vs. 27.2% at 250 mg穔g-1穌-1 WMN) and decreased the expression of cyclin D1, PCNA protein. Conclusion: WeiMaiNing inhibits the growth of 3LL cells in vivo by decreasing the expression of PCNA and cyclin D1, blocking the cells in G0-G1 phase and preventing the cells transition from G1 to S phase while DNA is replicated.