Objective:Histology grade,subtypes and TNM stage of lung adenocarcinomas are useful predictors of prognosis and survival.The aim of the study was to investigate the relationship between chromosomal instability,morphol...Objective:Histology grade,subtypes and TNM stage of lung adenocarcinomas are useful predictors of prognosis and survival.The aim of the study was to investigate the relationship between chromosomal instability,morphological subtypes and the grading system used in lung non-mucinous adenocarcinoma(LNMA).Methods:We developed a whole genome copy number variation(WGCNV)scoring system and applied next generation sequencing to evaluate CNVs present in 91 LNMA tumor samples.Results:Higher histological grades,aggressive subtypes and more advanced TNM staging were associated with an increased WGCNV score,particularly in CNV regions enriched for tumor suppressor genes and oncogenes.In addition,we demonstrate that 24-chromosome CNV profiling can be performed reliably from specific cell types(<100 cells)isolated by sample laser capture microdissection.Conclusions:Our findings suggest that the WGCNV scoring system we developed may have potential value as an adjunct test for predicting the prognosis of patients diagnosed with LNMA.展开更多
BACKGROUND Lung invasive mucinous adenocarcinoma(LIMA),formerly referred to as mucinous bronchioloalveolar carcinoma,is a rare disease that usually presents as bilateral lung infiltration,is unsuitable for surgery and...BACKGROUND Lung invasive mucinous adenocarcinoma(LIMA),formerly referred to as mucinous bronchioloalveolar carcinoma,is a rare disease that usually presents as bilateral lung infiltration,is unsuitable for surgery and radiotherapy,and shows poor response to conventional chemotherapy.CASE SUMMARY We report a 56-year-old Chinese man with a history of smoking and epidermal growth factor receptor mutation-positivity who was initially misdiagnosed as severe pneumonia,but was ultimately diagnosed as a case of invasive mucinous adenocarcinoma of the lung by computed tomography-guided percutaneous lung biopsy.Bronchorrhea and dyspnea were improved within 24 h after initiation of gefitinib therapy and the radiographic signs of bilateral lung consolidation showed visible improvement within 30 d.After more than 11 months of treatment,there is no evidence of recurrence or severe adverse events.CONCLUSION Although the precise mechanism of the antitumor effects of gefitinib are not clear,our experience indicates an important role of the drug in LIMA and provides a reference for the diagnosis and treatment of this disease.展开更多
An in vitro spheriod invasion model of tumor cell was established by using murine lung adenocarcinoma cell line (LA795) and precultured embryonic chick heart fragment (PHF). The spheroid of LA795 cells were prepared b...An in vitro spheriod invasion model of tumor cell was established by using murine lung adenocarcinoma cell line (LA795) and precultured embryonic chick heart fragment (PHF). The spheroid of LA795 cells were prepared by incubating a suspension of trypsinized LA795 cells on a gyratory shaker. Spheroid aggregates of LA795 cells in diameter of 0. 2 mm were selected and confronted with PHF (diameter of 0. 4 mm) on semi- solid medium for 3 - 4 hours, then, individual confronting pain were transferred into fluid medium for further co-culture on gyratory shaker. After 1, 3, 5 and 7 days, multiple confronting pairs were processed for histological and ultrastructural study. The Invasive capacity and the invasion process of LA795 cells were examined and observed. The results demonstrated that LA795 cell line has a high capacity of invasion and high malignancy in vitro. This spheroid Invasion model is very useful for studying mechanism of Invasiveness of tumor cells in vitro.展开更多
To the Editor:Lung invasive mucinous adenocarcinoma(LIMA)is regarded as a subtype of invasive lung adenocarcinoma(LUAD).No significant differences exist in the overall survival(OS)or recurrence-free survival(RFS)betwe...To the Editor:Lung invasive mucinous adenocarcinoma(LIMA)is regarded as a subtype of invasive lung adenocarcinoma(LUAD).No significant differences exist in the overall survival(OS)or recurrence-free survival(RFS)between lobectomy and sublobectomy in clinical stage IA non small cell lung cancer(NSCLC)≤2 cm.[1]Besides,the studies on surgical methods in early LIMA are limited.In this study,we reviewed the clinicopathological features of LIMA and compared its prognosis under different surgical methods.展开更多
目的:探究维生素D受体(vitamin D receptor,VDR)在肺腺癌中的表达及其对肺腺癌细胞生物学功能的影响。方法:本研究通过6个肺腺癌数据集(共792例肺腺癌组织和230例相邻非肿瘤组织)分析了VDR的mRNA在肺腺癌中的表达水平及其与预后的关系,...目的:探究维生素D受体(vitamin D receptor,VDR)在肺腺癌中的表达及其对肺腺癌细胞生物学功能的影响。方法:本研究通过6个肺腺癌数据集(共792例肺腺癌组织和230例相邻非肿瘤组织)分析了VDR的mRNA在肺腺癌中的表达水平及其与预后的关系,免疫组化检测30例肺腺癌患者肿瘤组织和癌旁组织中VDR蛋白表达。以肺腺癌细胞A549和H1650为研究对象,分别转染阴性对照和两条VDR短发夹RNA(shRNA)。CCK-8实验比较各实验分组的细胞活力,Transwell实验和划痕实验比较各实验分组细胞的侵袭及迁移能力。基因集富分析肺腺癌VDR高表达的组织富集的相关信号通路。结果:VDR的mRNA在肺腺癌组织中的表达显著增加(P<0.01)。免疫组化实验进一步证实了VDR在肺腺癌中显著高表达(P<0.01)。生存分析结果显示VDR的表达对肺腺癌患者的整体生存率没有显著影响(P>0.05)。敲减VDR可以显著抑制肺腺癌的细胞活力、侵袭及迁移能力(P<0.05)。基因集富集分析结果显示VDR高表达的肺腺癌组织显著富集在上皮-间充质转化等信号通路(P<0.05)。结论:VDR在肺腺癌中高表达,敲减VDR可以抑制肺腺癌细胞活力、侵袭及迁移能力。展开更多
基金grants from Beijing Hospital Key Research Program(121 Research Program,No.BJ2019-195)。
文摘Objective:Histology grade,subtypes and TNM stage of lung adenocarcinomas are useful predictors of prognosis and survival.The aim of the study was to investigate the relationship between chromosomal instability,morphological subtypes and the grading system used in lung non-mucinous adenocarcinoma(LNMA).Methods:We developed a whole genome copy number variation(WGCNV)scoring system and applied next generation sequencing to evaluate CNVs present in 91 LNMA tumor samples.Results:Higher histological grades,aggressive subtypes and more advanced TNM staging were associated with an increased WGCNV score,particularly in CNV regions enriched for tumor suppressor genes and oncogenes.In addition,we demonstrate that 24-chromosome CNV profiling can be performed reliably from specific cell types(<100 cells)isolated by sample laser capture microdissection.Conclusions:Our findings suggest that the WGCNV scoring system we developed may have potential value as an adjunct test for predicting the prognosis of patients diagnosed with LNMA.
基金Supported by the Science and Technology Research Project of Sichuan Provincial Administration of Traditional Chinese Medicine,No.2021MS164Scientific research project of Sichuan Medical Association,No.S21012。
文摘BACKGROUND Lung invasive mucinous adenocarcinoma(LIMA),formerly referred to as mucinous bronchioloalveolar carcinoma,is a rare disease that usually presents as bilateral lung infiltration,is unsuitable for surgery and radiotherapy,and shows poor response to conventional chemotherapy.CASE SUMMARY We report a 56-year-old Chinese man with a history of smoking and epidermal growth factor receptor mutation-positivity who was initially misdiagnosed as severe pneumonia,but was ultimately diagnosed as a case of invasive mucinous adenocarcinoma of the lung by computed tomography-guided percutaneous lung biopsy.Bronchorrhea and dyspnea were improved within 24 h after initiation of gefitinib therapy and the radiographic signs of bilateral lung consolidation showed visible improvement within 30 d.After more than 11 months of treatment,there is no evidence of recurrence or severe adverse events.CONCLUSION Although the precise mechanism of the antitumor effects of gefitinib are not clear,our experience indicates an important role of the drug in LIMA and provides a reference for the diagnosis and treatment of this disease.
文摘An in vitro spheriod invasion model of tumor cell was established by using murine lung adenocarcinoma cell line (LA795) and precultured embryonic chick heart fragment (PHF). The spheroid of LA795 cells were prepared by incubating a suspension of trypsinized LA795 cells on a gyratory shaker. Spheroid aggregates of LA795 cells in diameter of 0. 2 mm were selected and confronted with PHF (diameter of 0. 4 mm) on semi- solid medium for 3 - 4 hours, then, individual confronting pain were transferred into fluid medium for further co-culture on gyratory shaker. After 1, 3, 5 and 7 days, multiple confronting pairs were processed for histological and ultrastructural study. The Invasive capacity and the invasion process of LA795 cells were examined and observed. The results demonstrated that LA795 cell line has a high capacity of invasion and high malignancy in vitro. This spheroid Invasion model is very useful for studying mechanism of Invasiveness of tumor cells in vitro.
基金supported by the National Key R&D Program of China(No.2022YFC2407404)National High-Level Hospital Clinical Research Funding(Nos.2022-PUMCH-A-018 and 2022-PUMCH-C-043)+2 种基金Special Research Fund for Central Universities,Peking Union Medical College(No.2022-I2M-C&T-B-060)Beijing Hope Run Special Fund of Cancer Foundation of China(No.LC2021L01)the Beijing Municipal Science&Technology Commission(No.Z211100002921058).
文摘To the Editor:Lung invasive mucinous adenocarcinoma(LIMA)is regarded as a subtype of invasive lung adenocarcinoma(LUAD).No significant differences exist in the overall survival(OS)or recurrence-free survival(RFS)between lobectomy and sublobectomy in clinical stage IA non small cell lung cancer(NSCLC)≤2 cm.[1]Besides,the studies on surgical methods in early LIMA are limited.In this study,we reviewed the clinicopathological features of LIMA and compared its prognosis under different surgical methods.
文摘目的:探究维生素D受体(vitamin D receptor,VDR)在肺腺癌中的表达及其对肺腺癌细胞生物学功能的影响。方法:本研究通过6个肺腺癌数据集(共792例肺腺癌组织和230例相邻非肿瘤组织)分析了VDR的mRNA在肺腺癌中的表达水平及其与预后的关系,免疫组化检测30例肺腺癌患者肿瘤组织和癌旁组织中VDR蛋白表达。以肺腺癌细胞A549和H1650为研究对象,分别转染阴性对照和两条VDR短发夹RNA(shRNA)。CCK-8实验比较各实验分组的细胞活力,Transwell实验和划痕实验比较各实验分组细胞的侵袭及迁移能力。基因集富分析肺腺癌VDR高表达的组织富集的相关信号通路。结果:VDR的mRNA在肺腺癌组织中的表达显著增加(P<0.01)。免疫组化实验进一步证实了VDR在肺腺癌中显著高表达(P<0.01)。生存分析结果显示VDR的表达对肺腺癌患者的整体生存率没有显著影响(P>0.05)。敲减VDR可以显著抑制肺腺癌的细胞活力、侵袭及迁移能力(P<0.05)。基因集富集分析结果显示VDR高表达的肺腺癌组织显著富集在上皮-间充质转化等信号通路(P<0.05)。结论:VDR在肺腺癌中高表达,敲减VDR可以抑制肺腺癌细胞活力、侵袭及迁移能力。
