解剖学报 ›› 2018, Vol. 49 ›› Issue (2): 191-197.doi: 10.16098/j.issn.0529-1356.2018.02.009

• 肿瘤生物学 • 上一篇    下一篇

组织蛋白酶D新的糖基化异构体在肺癌中表达的临床意义及其与预后的相关性

张慧娟1 郑晓伟1,2乔玲1 李鸿超3 常文静1 卢锋1* 贾彩云1*   

  1. 1.河南大学抗体药物开发技术国家地方联合工程实验室,河南开封 475004; 2.河南省濮阳市中医院检验科,河南 濮阳 475000; 3.河南省濮阳市油田总医院病理科,河南 濮阳 475000
  • 收稿日期:2017-05-26 修回日期:2017-11-29 出版日期:2017-04-06 发布日期:2018-04-06
  • 通讯作者: 卢锋;贾彩云 E-mail:jcy2668@163.com
  • 基金资助:
    Cathepsin D新的糖基化异构体在肺癌发生发展中的作用及分子机制

Clinical significance and correlation with prognosis of novel glycosylation isoform of cathepsin D expression in lung cancer

ZHANG Hui-juan1 ZHENG Xiao-wei 1,2 QIAO Ling1 LI Hong-chao3 CHANG Wen-jing1 LU Feng 1* JIA Cai-yun 1*   

  1. 1.He’nan University Joint National Laboratory for Antibody Drug Engineering,He’nan Kaifeng 475004, China; 2.Department of Clinical Laboratory,Puyang Hospital of Traditional Chinese Medicine, He’nan Puyang 475000, China; 3.Department of Pathology, Puyang Oilfeld General Hospital, He’nan Puyang 475000, China
  • Received:2017-05-26 Revised:2017-11-29 Online:2017-04-06 Published:2018-04-06
  • Contact: LU Feng; JIA Cai-yun E-mail:jcy2668@163.com

摘要:

目的 探讨组织蛋白酶D(CTSD)新的糖基化异构体与肺癌临床病理特征及预后的相关性。 方法 应用免疫组织化学和半定量RTPCR方法检测119例肺癌组织和39例癌旁组织中CTSD的表达;Western blotting分析CTSD各异构体表达特点;去糖基化实验检测CTSD 蛋白的糖基化修饰;Kaplan-Meier分析66kD异构体、临床病理资料与肺癌术后整体生存期的相关性。 结果 CTSD在肺鳞癌、腺癌和小细胞肺癌组织中高表达;66kD蛋白为CTSD新的糖基化异构体,该异构体表达与肺癌组织类型、临床分期、淋巴结转移和患者的吸烟史密切相关(P<0.05),阳性表达和阴性表达患者术后中位生存时间分别为20.0和30.0个月(P<0.05);肺癌组织类型、临床分期、淋巴结转移、肿瘤大小和66kD异构体表达是影响肺癌预后的独立因素。 结论 CTSD 66kD异构体阳性表达可能是肺癌预后不良的分子标志物之一。

关键词: 肺癌, 组织蛋白酶D, 糖基化异构体, 免疫印迹法,

Abstract:

Objective To study the correlation of novel glycosylation isoform of cathepsin D (CTSD) expression with clinical features and its prognostic value in lung cancer.Methods Immunohistochemistry and Semi-quantitative RT-PCR were used to examine the cathepsin D expression, and Western blotting to analyze characterization of cathepsin D isoforms expression in 119 lung cancer tissues and 39 paraneoplastic tissues. Deglycosylation experiment was performed to check glycosylation-modified condition of cathepsin D. The association of 66kD isoform expression with clinical features and lung cancer prognosis was determined by Kaplan-Meier survival analysis. Results Cathepsin D highly expressed in squamous carcinomas, adenocarcinoma and small cell carcinoma tissues. 66kD protein form of cathepsin D was a novel glycosylation isoform of cathepsin D, its expression was associated with lung cancer histological type, clinical stage, lymph node metastasis and smoking status(P<0.05). The median survival time of lung cancer with 66kD isoform positive and negative expression were 20.0 months and 30.0 months, respectively (P<0.05). Histological type, clinical stage, lymph node metastasis, tumor size and 66kD isoform were independent prognostic factor of lung cancer. Conclusion Positive expression of 66kD isoform of cathepsin D may be one of molecular markers which correlate with poor prognosis of lung cancer.

Key words: Lung cancer, Cathepsin D, Glycosylation isoform, Western blotting, Human