Comparative Proteome Analysis of Human Lung Squamous Carcinoma Tissue

Objective： To establish the two-dimensional electrophoresis profiles with high resolution and reproducibility from human lung squamous carcinoma tissue and paired normal tumor-adjacent bronchial epithelial tissue, and to identify differential expression tumor-associated proteins by using proteome analysis. Methods： Comparative proteome analysis with 20 human lung squamous carcinoma tissues and the paired normal bronchial epithelial tissues adjacent to tumors was carried out. The total proteins of human lung squamous carcinoma tissue and paired normal tumor-adjacent bronchial epithelial tissue were separated by means of immobilized pH gradient-based two-dimensional gel electrophoresis （2-DE） and silver staining. The differential expression proteins were analyzed and then identified by matrix-assisted laser desorption/ionization time of flight mass spectrometry （MALDI-TOF-MS）. Results： （1） Well-resolved, reproducible 2-DE patterns of human lung squamous carcinoma and adjacent normal bronchial epithelial tissues were obtained. For tumor tissue, average spots of 3 gels were 1567±46, and 1436±54 spots were matched with an average matching rate of 91.6%. For control, average spots of 3 gels were 1349±58, and 1228±35 spots were matched with an average matching rate of 91.03%. The average position deviation of matched spots was 0.924±0.128 mm in IEF direction, and 1.022±0.205 mm in SDS-PAGE direction; （2） A total of 1178±56 spots were matched between the eleetrophoretie maps of 20 human lung squamous carcinoma tissues and paired normal tumor-adjacent bronchial epithelial tissues. Seventy-six differentially expressed proteins were screened; （3） Sixty-eight differential proteins were identified by PMF, some proteins were the products of oneogenes, and others involved in the regulation of cell cycle and signal transduetion; （4） In order to validate the reliability of the identified results, the expression of 3 proteins mdm2, c-jun and EGFR, which was correlated with lung squamous carcinoma, was detected by immunohistoehemieal staining and Western blot analysis. The results revealed that mdm2, c-jun and EGFR were up-regulated in lung squamous carcinomas, whereas they were down-regulated in adjacent normal bronchial epithelial tissues, normal lung tissues and inflammatory pseudotumor, which was consistent with our proteome analysis results. Conclusion： The well-resolved, reproducible 2-DE patterns of human lung squamous carcinoma and adjacent normal bronchial epithelial tissues were established and 68 differential proteins were characterized by applying comparative proteome analysis successfully. These results will provide scientific foundation for screening the molecular biomarker used to diagnose and treat lung squamous carcinoma, as well as to improve the patient＇s prognosis and provide new clue for the research of lung squamous carcinogenic mechanism.

REVERSION OF MALIGNANT PHENOTYPES OF HUMAN LUNG SQUAMOUS CARCINOMA CELLS BY ORNITHINE DECARBOXYLASE ANTISENSE RNA

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.

Up-Regulation of the Gap Junction Intercellular Communication by Tea Polyphenol in the Human Metastatie Lung Carcinoma Cell Line

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.

Quantitative analysis of butyric acid-induced nuclear ultrastructural alterations in cells of human lung giant cell carcinoma in vitro

The effects of butyric acid(BA)on the nuclear ultrastructure of humanlung giant cell carcinoma(Strain PLA-801 D)were observed with digital imageprocessing.It was found that the length of the nuclear circumference of the tu-mor cells incubated with 2mmol of BA was approximately equal to that of thecontrol whereas the nuclear area was increased by 1.4times,which implies thatthe nuclear profile tends to become more regular after BA treatment.In addition,the optical density of the nuclei of the experimental group decreased significantlyas compared with that of the control,which indicates that the chromatin in thenuclei was decreased by BA.It was concluded on the basis of the findings thatBA may have a biological effect of reverse-transformation on the malignant cells.

MORPHOLOGICAL SURVEY ON ENDOGENOUS C-TYPE VIRUSES INFECTING A HUMAN LUNG SQUAMOUS CARCINOMA PASSAGED IN NUDE MICE

A human lung squamous carcinoma was transplanted and passaged in Swiss-DF nude mice, called LSX-83, for more than five years in our laboratory. The morphological characteristics of the original tumor were maintained in passages from 4 to 33. But from the 35th generation, an increasing amount of tonofilaments and nuclear segregation with typical features was found with electron microscopy. The C-type virus particles were first detected in extra cellular space after 40 passages. The viruses were observed in different stages of growth, but their distribution and number did not show apparent change up to 54 passages. Such findings suggest that LSX-83 cells probably possess certain barrier of resistance against C-type viruses. The relation between C-type viruses and the morphological changes of LSX-83 cells was discussed.

INFLUENCE OF IMMUNE STATUS OF THE IMMUNE DEFICIENT MICE ON THE METASTATIC PHENOTYPES OF THE HETEROGENEOUS CLONAL SUBLINES OF HUMAN LUNG GIANT CELL CARCINOMA

By using cell cloning technique, 4 sublines (A,C,D,E) were isolated from a cell line of human lung giant cell carcinoma (PLA-801). After subcutaneous inoculation in T-cell deficient BALB/c nude mice, the incidence of tumor growth and spontaneous metastasis were the highest in subline D, moderate in sublines A and E, and lowest in subline C. Tumor cells of subline C also showed similar low tumorigenicity in another T-cell deficient 615/ PB1 nude mice.However, in 615/PB1 beige nude mice with con-genitally combined immune-deficiency in both T and NK cell activity, tumor cells of the rarely metastatic subline C do produce significantly high frequency of tumor growth and spontaneous metastasis.Morphological studies (light microscope, electron microscope and immunohistochemistry) showed rich microfilaments and Vimentin positive in the cytoplasm of metastatic tumor cells. This may imply a possibility that tumor cells differentiate towards the direction favourable to spreading and metastasis.

Clinical Observation on Treatment of NonParvicellular Carcinoma of the Lung with Jin Fu Kang Oral Liquid

Jin Fu Kang Oral Liquid ([symbol: see text]), made of traditional Chinese drugs for supplementing qi and nourishing yin, was developed according to the common symptoms in lung carcinoma with deficiency of both qi and yin. Of the 96 cases in the Jin Fu Kang group, 1 case got complete remission (CR) after treatment, 8 cases partial remission (PR), 52 cases no change (NC), PR + NC covering 63.5%. Of the 52 cases in the group of Jin Fu Kang plus chemotherapy, 11 cases got PR after treatment, 26 cases NC, PR + NC covering 71.2%. Of the 25 cases in the chemotherapy group, 4 cases got PR after treatment, 11 cases NC, PR + NC covering 60.0%. The results show that the therapeutic effectiveness in the Jin Fu Kang group and the group of Jin Fu Kang plus chemotherapy was better than that in the chemotherapy group. The one-year survival rate and the two-year survival rate after treatment in the Jin Fu Kang group were 67.3% and 67.3% respectively; 66.7% and 66.7% in the group of Jin Fu Kang plus chemotherapy; and 40.3% and 0.0% in the chemotherapy group. The improvement of clinical symptoms, increase of body weight and improvement of health situation (KPS marks) after treatment in both the Jin Fu Kang group and the group of Jin Fu Kang plus chemotherapy were better than that in the chemotherapy group. Some indicators of immunology and hemogram after treatment were greatly improved in the Jin Fu Kang group, worse in the chemotherapy group, but no obvious improvement in the group of Jin Fu Kang plus chemotherapy.

Basic Investigations EXPRESSION OF GAP JUNCTION PROTEIN Cx43 IN CULTURED HUMAN NORMAL AND MALIGNANT LUNG CELLS

Gap junctional intercellular communicationexchange of small molecules and ions between contiguous cells through membranous gap junctional channelsis essential for growth control and tissue homecotasis. This work concerns the functional expression of gap junction protein connexin 43 (Cx43) in normal human lung cells and the changes in lung carcinoma cells. By. using Northern blot hybridization analysis and Cx43 immunocytochemical methods, it was otherved that cultured normal human embryonic lung cells expressed a high level of Cx43 in both mRNA and protein levels.The Cx43 immunofluorescence was localized at cell membrane regions corresponding to the location of gap junctions. These normal lung cells were competent of intercellular communication function as detected by Lucifer yellow dye transfer. In contrast to normal celis, Cx43 mRNA and protein was not detectable in the carcinoma PG cell line. These tumor cells were defective of intercellular communication function. These results demonstrate that Cx43 is expressed in normal cultured human embryonic lung cells but not in lung tumor cells. The lack of intercellular communication in the lung tumor cell line correlates with dysfunctional intercellular communication. The suggestive role of Cx as a tumor suppersor gene is discussed.

Value of COX-2 and HER-2 in Judging Condition and Prognosis in Non-Small Cell Lung Cancer Patients

OBJECTIVE To investigate the expressions of cyclooxygenase 2 （COX-2） and human epidermal growth factor receptor-2 （HER-2） in non-small cell lung cancer （NSCLC） and their clinical significance in identifying the progression and prognosis of the NSCLC patients. METHODS Immunohistochemical indirect method was used to detect the expressions of the COX-2 and HER-2 protein in 54 NSCLC specimens, 16 paraneoplastic specimens, and 10 normal tissue specimens. RESULTS The positive rates of COX-2 and HER-2 protein expressions were respectively 75.9% and 40.7% in the NSCLC specimens, 25% and 12.5% in the paraneoplastic specimens, and 0 in the normal tissue. The COX-2 protein expression in lung cancer （LC） was not only related to the smoking habit of the patients and histological grades of LC, but also to the TNM stages, and lymphatic metastasis （P 〈 0.05）. HER-2 protein expression closely correlated to the pathologic types, histological grades, TNM stages, and lymphatic metastasis （P 〈 0.05）. The result of univariate analysis showed that all the histological grades, TNM stages, lymphatic metastasis, and expressions of COX-2/HER-2 correlated to the prognosis of NSCLC patients （mean of P value 〈 0.01）. The multivariate survival analysis indicated that there were signi.cant di.erences in comparison of the survival time between the COX-2 （＋＋/＋＋＋） /HER-2 （＋＋/＋＋＋） and the COX-2 （-/＋）/HER-2 （-/＋） groups （P〈 0.001）, suggesting the COX-2/HER-2 was a negative prognostic factor. CONCLUSION COX-2 and HER-2 are valuable in identifying the progression of NSCLC and predicting the prognosis of NSCLC patients. COX-2 and HER-2 are useful for judging the NSCLC patient＇s condition, and are of great value to the decision of NSCLC prognosis.

The Therapeutic Effects of the Radiotherapy Plus TCM Treatment Observed in Senile Non-Parvicellular Lung Cancer Patients at the Late Stage

47 senile non-parvicellular lung cancer patients at stage Ⅲ or Ⅳ were randomly divided into a treatment group (26 cases) treated by radiotherapy plus traditional Chinese medicine (TCM) and a control group (21 cases) treated only by radiotherapy for observation of the therapeutic effects.The patients in the treatment group orally took Chinese medicine during and after the radiotherapy.There was no obvious difference in short-term therapeutic effects between the two groups,but the long-term curative effects in the treatment group was obviously superior to that in the control group (P<0.05 or P<0.01).Conclusion:radiotherapy plus TCM can prolong the survival period for senile non-parvicellular lung cancer patients.

血清CYFRA21-1、CEA、SCC、HE4、ProGRP对肺癌早期诊断及病理类型鉴别的临床价值

目的探究肿瘤标志物血清细胞角蛋白19片段(CYFRA21-1)、癌胚抗原(CEA)、鳞状细胞癌抗原(SCC)、人附睾蛋白4(HE4)、胃泌素释放肽前体(ProGRP)对肺癌早期诊断及病理类型鉴别的临床价值。方法选取2021年2月至2022年2月安康市中心医院收治的280例肺癌早期患者作为肺癌组,同期收治的100例肺部良性疾病患者作为良性对照组,比较两组患者的血清CYFRA21-1、CEA、SCC、HE4及ProGRP水平,采用受试者工作特征曲线(ROC)分析血清CYFRA21-1、CEA、SCC、HE4、Pro GRP以及联合检测对肺癌早期诊断的临床价值,并根据肺癌组患者的病理分型结果比较非小细胞肺癌(NSCLC)与小细胞肺癌(SCLC)患者的血清CYFRA21-1、CEA、SCC、HE4及ProGRP水平。结果肺癌组患者的血清CYFRA21-1、CEA、SCC、HE4及ProGRP水平分别为(2.04±1.87)ng/mL、(3.08±0.82)ng/mL、(4.51±1.54)ng/mL、(60.14±15.88)pmol/L、(61.27±19.34)μg/L,明显高于良性对照组的(1.15±0.43)ng/mL、(2.54±0.71)ng/mL、(3.09±1.68)ng/mL、(45.14±17.56)pmol/L、(50.14±18.73)μg/L,差异均有统计学意义(P<0.05);经ROC分析结果显示,血清CYFRA21-1诊断肺癌早期的最佳截断值为1.830 ng/m L,CEA为2.856 ng/mL,SCC为3.140 ng/mL,HE4为50.340 pmol/L,ProGRP为57.605μg/L,5项指标联合诊断肺癌早期的AUC及敏感度达到0.901、89.30%,均高于单一指标诊断,差异有统计学意义(P<0.05);SCLC组患者的ProGRP水平明显高于NSCLC组,差异有统计学意义(P<0.05),而两组患者的CYFRA21-1、CEA、SCC及HE4水平比较差异均无统计学意义(P>0.05);腺癌组患者的SCC为(5.50±2.73)ng/mL,明显高于鳞癌组的(1.42±0.05)ng/mL,差异有统计学意义(P<0.05),而两组患者的CYFRA21-1、CEA、HE4及ProGRP水平比较差异均无统计学意义(P>0.05)。结论与肺部良性疾病患者比较,肺癌早期患者血清CYFRA21-1、CEA、SCC、HE4及ProGRP水平更高,且其联合检测诊断早期肺癌的临床价值高,血清ProGRP鉴别NSCLC与SCLC,血清SCC鉴别腺癌与鳞癌均有一定价值,建议临床密切监测。

重组人血管内皮抑制素注射液持续静脉泵注联合同步放化疗治疗中晚期肺鳞癌的疗效

目的观察重组人血管内皮抑制素注射液持续静脉泵注联合同步放化疗治疗中晚期肺鳞癌的临床疗效。方法选取2015年1月—2020年12月中国人民解放军第970医院收治住院的中晚期肺鳞癌患者50例,按照随机数字表法分为联合组和对照组,每组25例。对照组给予肺癌及纵隔转移淋巴结局部放疗,每周5次,同时给予长春瑞滨+顺铂全身化疗2个周期,放疗结束3周后再给予4个周期全身化疗。联合组在对照组治疗的基础上于每次化疗前4 d给予重组人血管内皮抑制素注射液持续静脉泵注。比较2组患者近期疗效、生存质量改善率和不良反应。结果联合组患者客观缓解率为60.00%,高于对照组的32.00%(χ^(2)=3.945,P=0.047);联合组与对照组患者疾病控制率比较差异无统计学意义(80.00%vs.64.00%,χ^(2)=1.587,P=0.208);联合组患者生存质量改善率为76.00%,高于对照组的48.00%(χ^(2)=4.160,P=0.041);2组患者各项不良反应发生率比较差异无统计学意义(P>0.05)。结论重组人血管内皮抑制素注射液持续静脉泵注联合同步放化疗治疗中晚期肺鳞癌近期临床疗效显著,可提高客观有效率,改善生存质量,且未明显增加不良反应。

Proteomic Comparison of Two-Dimensional Gel Electrophoresis Profiles from Human Lung Squamous Carcinoma and Normal Bronchial Epithelial Tissues

Differential proteome profiles of human lung squamous carcinoma tissue compared to paired tumor-adjacent normal bronchial epithelial tissue were established and analyzed by means of immobilized pH gradient-based two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) and matrix-assisted laser desorp-tion/ionization time of flight mass spectrometry (MALDI-TOF-MS). The results showed that well-resolved, reproducible 2-DE patterns of human lung squamous carcinoma and adjacent normal bronchial epithelial tissues were obtained under the condition of 0.75-mg protein-load. The average deviation of spot position was 0.733±0.101 mm in IEF direction, and 0.925±0.207 mm in SDS-PAGE direction. For tumor tissue, a total of 1241±88 spots were detected, 987±65 spots were matched with an average matching rate of 79.5%. For control, a total of 1190±72 spots were detected, and 875±48 spots were matched with an average matching rate of 73.5%. A total of 864±34 spots were matched between tumors and controls. Forty-three differential proteins were characterized: some proteins were related to oncogenes, and others involved in the regulation of cell cycle and signal transduc-tion. It is suggested that the differential proteomic approach is valuable for mass identification of differentially expressed proteins involved in lung carcinogenesis. These data will be used to establish human lung cancer proteome database to further study human lung squamous carcinoma.

Correlation between expression of cadherin and gap junctional communication in human lung carcinoma cells

The correlation between expression of Ca 2+ dependent cell adhesion molecule, cadherin, and gap junctional intercellular communication (GJIC) in human lung carcinoma PG cell line and connexin43 (Cx43) cDNA transfected PG cell clones was investigated. Results from immunoblotting and immunofluorescent staining revealed that cultured normal human lung cells (RF) expressed N cadherin. However, the expression level of N cadherin in PG cells was very low in comparison with normal RF cells. The Cx43 transfected PG clones exhibited comparable levels of Cx43 protein, but varied in the level of N cadherin expression and in the function of GJIC as measured by scrape loading and dye transfer (SLDT) method. Positive correlation between N cadherin and GJIC was demonstrated. The in vitro and in vivo growth examination results suggest that N cadherin mediated cell cell adhesions and Cx43 functional expression, the GJIC, may work coordinately with each other in regulation of cell growth and differentiation. Deficiency in both GJIC and cell adhesion may be crucial for cell transformation.

重组人血管内皮抑制素治疗非小细胞肺癌的疗效分析

目的 探讨重组人血管内皮抑制素治疗晚期驱动基因阴性非小细胞肺癌(non-small cell lung cancer,NSCLC)疗效及对血清癌胚抗原(carcino-embryonic antigen,CEA)、鳞状细胞癌抗原(squamous cell carcinoma antigen,SCC-Ag)水平的影响。方法 选取2022年1月—2023年1月福建医科大学附属漳州市医院收治的晚期驱动基因阴性NSCLC患者60例,根据随机数字表法分为观察组与对照组,各30例。对照组采用程序性细胞死亡蛋白1(programmed cell death protein1,PD-1)抑制剂联合化疗治疗,观察组采用PD-1抑制剂联合化疗+重组人血管内皮抑制素治疗。比较两组的临床疗效、生存质量、血清CEA、SCC-Ag水平及不良反应发生情况。结果 观察组总有效率为70.00%,高于对照组的60.00%,差异无统计学意义(P> 0.05)。治疗后,观察组癌症患者生命质量测定量表(functional assessment of cancer therapy generic scale,FACT-G)生理状况、社会/家庭状况、情感状况及功能状况评分均高于对照组(P <0.05)。治疗后,观察组血清CEA、SCC-Ag水平均低于对照组(P <0.05)。两组各项不良反应发生率比较,差异无统计学意义(P> 0.05)。结论 在PD-1抑制剂联合化疗治疗基础上,采用重组人血管内皮抑制素治疗晚期驱动基因阴性NSCLC能提高临床疗效,改善患者生存质量及血清CEA、SCC-Ag水平,且安全性良好。

The expression of N-cadherin/catenins/actin complex in human lung normal and carcinoma cells

The difference between human normal and carcinoma lung cells was studied with regard to the protein expression level and localization of the cadherin/catenin/actin complex. Results demonstrated that normal lung cell RF expressed high levels of N-cadherin, β-catenin, α-catenin. These 3 proteins were colocalized at AJs and their submembrane adhesion plaques where they link the Rho-phalloidin-positive actin stress fibers, indicating the existence of N-cadherin/catenin/actin complexes at the AJs. Aberrant expression of AJ proteins and the actin cytoskelecton in carcinoma PG cells was observed: (1) inhibition of N-cadherin and to a degree of inhibition of α-catenin protein expression; (2) varied protein modification of β-catenin in cytoplasm soluble fraction and altered distribution of immunofluorescence: majorly in the cytoplasm and minorly on the membrane; (3) disassembly of actin stress fibers and formation of actin bodies in the cytoplasm. The data suggest that inhibited expression of AJ proteins is correlated with the disruption of the AJ complexes and the actin cytoskeleton in carcinoma PG cells, and responsible for its metastasis behaviors.

95D细胞转移相关基因在原发灶、循环肿瘤细胞和转移灶中的差异表达

目的利用人巨细胞肺癌高转移株(95D)裸鼠自发转移模型,分析CD9、RHOA、MYL12A、B2M、PTOV1、HSPA1B肿瘤转移相关基因在原发灶、循环血肿瘤细胞(circulating tumor cells,CTCs)和转移灶中的差异表达。方法根据前期实验结果并利用GoSufer软件进行GO(gene ontology)分析,筛选出可能与肿瘤转移相关的基因CD9、RHOA、MYL12A、B2M、PTOV1、HSPA1B。利用稳定表达绿色荧光蛋白(GFP)的人巨细胞肺癌细胞株95D/GFP,建立肺癌裸鼠自发转移模型,用流式细胞分选术(fluorescence-activated cell sorting,FACS)分别纯化原发灶、外周血和转移灶中的肿瘤细胞,利用Real-time PCR技术检测上述基因在上述肿瘤细胞中的相对表达量。结果 CD9、RHOA、MYL12A基因在CTCs中表达较少,其次是肝转移灶,在皮下原发灶中表达较多;B2M基因在皮下原发灶、CTCs和肝转移灶中依次降低;PTOV1基因在CTCs中高表达,其次是皮下原发灶,肝转移灶中表达最少;HSPA1B基因只在原发灶中表达。结论 CD9、RHOA、MYL12A、B2M、HSPA1B基因可能是潜在的肺癌转移抑制基因,而PTOV1可能促进肺癌微转移。

反义Ku70在人肺癌细胞的表达及对放射线的敏感性研究

目的 :研究反义Ku70在人肺癌细胞的表达及对放射线的超敏效应。方法 :采用Western boltting法证明 ,Ku70 LCA中Ku70蛋白的表达情况 ,采用体外放射线敏感实验证明 ,反义Ku70在人肺癌细胞的表达及对放射线的超敏效应 ,其结果以细胞存活克隆率和剂量效应曲线表示。结果 :(1)对照组和导入正义Ku70基因的LCA组细胞可见Ku70蛋白表达印迹 ,导入反义Ku70基因LCA组细胞未见Ku70蛋白表达印迹。 (2 )导入反义Ku70基因的LCA组细胞对放射线的敏感性明显增强 (P <0 0 1) ,并呈剂量依赖性。结论 :反义Ku70封闭了肿瘤细胞的正义Ku70蛋白表达后 ,对放射线呈超敏效应 ,为提高肿瘤放疗的特异性和靶向基因治疗奠定了基础。

肺癌组织端粒酶亚基的表达及与端粒酶活性的关系

目的：探讨肺癌端粒酶各亚基的表达及与端粒酶活性的关系。方法：用ＴＲＡＰ法检测端粒酶活性，用逆转录 ＰＣＲ（ＲＴ－ＰＣＲ）法检测肺癌组织、肺部良性瘤样病变和病灶旁非癌肺组织的 ＲＮＡ成分（ｈｕｍａｎ ｔｅｌｏｍｅｒａｓｅ ＲＮＡｃｏｍｐｏｎｅｎｔ， ｈＴＲ）、端粒酶逆转录酶（ｈｕｍａｎ ｔｅｌｏｍｅｒａｓｅ ｒｅｖｅｒｓｅ ｔｒａｎｓｃｒｉｐｔａｓｅ， ｈＴＥＲＴ）、端粒酶相关蛋白 １（ｈｕｍａｎｔｅｌｏｍｅｒａｓｅ－ａｓｓｏｃｉａｔｅｄ ｐｒｏｔｅｉｎ， ｈＴＥＰ1）各亚基的 ｍＲＮＡ表达，其结果与肺癌的组织类型、分化程度及ＴＮＭ分期进行了比较。结果：肺癌组织、肺部良性瘤样病变、病灶旁非癌肺组织端粒酶活性阳性率为８２％（４８／５９）、４３％（３／７）和２０％（７／３５）（Ｐ＜０．０００１），ｈＴＥＲＴ ｍＲＮＡ表达阳性率分别为９１％（３３／３６）、７７％（７／９）、３５％（８／２２）（Ｐ＜０．０００１）。３组ｈＴＲ、ｈＴＥＰ１ ｍＲＮＡ普遍呈阳性表达，差异无显著性（Ｐ＞０．０５）。肺癌不同细胞类型（鳞癌和腺癌）、ＴＮＭ分期和分化程度之间端粒酶活性、ｈＴＥＲＴ ｍＲＮＡ水平未见显著差异（Ｐ＞０．０５）。肺癌组织、肺部良性瘤样?

重组人血管内皮抑制素在晚期肺鳞癌治疗中的临床应用

背景与目的肺鳞癌是非小细胞肺癌常见的病理类型,晚期肺鳞癌是一种无法治愈的恶性肿瘤。抗血管生成药物与传统化疗联合能够为患者带来生存改善。本研究分析了重组人血管内皮抑制素(恩度)联合化疗治疗晚期肺鳞癌的疗效及安全性。方法回顾性分析中国医学科学院肿瘤医院内科2011年11月-2015年5月采用人血管内皮抑制素联合传统化疗方案治疗的15例晚期肺鳞癌患者的近期疗效、毒副反应及无进展生存时间。结果 14例可评估患者中疗效评价最佳即为部分缓解5例(35.7%)、疾病稳定7例(50.0%)、疾病进展2例(14.3%),客观缓解率为35.7%,疾病控制率为85.7%,中位无进展生存为9.3个月。全组患者治疗耐受良好,3度不良反应表现为中性粒细胞减少(2/15,13.3%)和呕吐(1/15,6.7%),其余不良事件均为1度/2度。结论重组人血管内皮抑制素联合化疗治疗晚期肺鳞癌可取得较好的客观疗效并且安全性良好。