华西口腔医学杂志

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X-性染色体连锁凋亡抑制蛋白与口腔鳞癌细胞Tca8113化疗耐药的关系

王家凤1 张志民1 王成坤1 聂代邦2 高文信1   

  1. 1.吉林大学口腔医院牙体牙髓病科, 吉林长春130021;2.吉林大学农学部动物技术系, 吉林长春130062
  • 收稿日期:2010-02-25 修回日期:2010-02-25 出版日期:2010-02-20 发布日期:2010-02-20
  • 通讯作者: 张志民,Tel:0431-88796017
  • 作者简介:王家凤(1982—),女,黑龙江人,助教,硕士
  • 基金资助:

    吉林省科技发展计划基金资助项目(20050405-1);吉林大学创新基金资助项目(419070200084)

Expression of X-linked inhibitor of apoptosis protein in Tca8113 cell and its relationship to chemoresistance

WANG Jia-feng1, ZHANG Zhi-min1, WANG Cheng-kun1, NIE Dai-bang2, GAO Wen-xin1   

  1. 1. Dept. of Endodontics, School of Stomatology, Jilin University, Changchun 130021, China; 2. Dept. of Animal Biotechnology, School of Animal Science and Veterinary Medicine, Jilin University, Changchun 130062, China
  • Received:2010-02-25 Revised:2010-02-25 Online:2010-02-20 Published:2010-02-20
  • Contact: ZHANG Zhi-min,Tel:0431-88796017

摘要:

目的研究X-性染色体连锁凋亡抑制蛋白(XIAP)在口腔鳞癌细胞Tca8113中的表达水平,并探讨XIAP表达与Tca8113细胞对化疗药物耐药性之间的关系。方法用平阳霉素(PYM)间歇性加药,逐步递增剂量,采用甲基噻唑基四唑(MTT)法检测药物处理前后细胞对PYM的敏感性,逆转录聚合酶链反应(RT-PCR)分别检测XIAP在药物处理前后的各Tca8113细胞组中的表达变化,并探讨XIAP与细胞耐药性的关系。结果Tca8113细胞在PYM间断作用下产生耐受,Tca8113-1-10组、Tca8113-10-10组耐药细胞对PYM的半数有效浓度(IC50)分别为(12.758±0.030)、(18.986±0.150)μg·mL-1。Tca8113-1-20、Tca8113-10-20组耐药细胞对PYM的IC50分别为(26.302±0.072)、(35.294±0.115)μg·mL-1。XAIP的表达水平与细胞对PYM的耐药有相关性(P<0.01)。结论XIAP在口腔鳞癌中的表达水平升高,可能与鳞癌的化疗耐药性有关,这可作为口腔鳞癌基因治疗的一个新靶点。

关键词: 口腔鳞状细胞癌, X-性染色体连锁凋亡抑制蛋白, 化疗耐药

Abstract:

Objective To explore the expression of X-linked inhibitor of apoptosis protein(XIAP) in Tca8113 cell, and to investigate its relationship to the chemoresistance. Methods The Tca8113 cell line was cultured by IMDM and the concentration of Pingyangmycin(PYM) added to Tca8113 cell line was increased gradually and continually, which was to induce the PYM-resistance in Tca8113 cell line. The sensitivity of Tca8113 cell to PYM and expression of XIAP were measured with methyl thiazolyl tetrazolium(MTT) chromatometry and reverse transcriptionpolymerase chain raction(RT-PCR). The XIAP level in the cells and its chemoresistance to PYM were analyzed by linear regression. Results The IC50 of Tca8113-1-10 group and Tca8113-10-10 group were(12.758±0.030), (18.986± 0.150)μg·mL-1 respectively. The IC50 of Tca8113-1-20 group and Tca8113-10-20 group increased to(26.302±0.072), (35.294±0.115)μg·mL-1 respectively. There was a relation between XIAP and the drug-resistance in Tca8113 cell. Conclusion XIAP may play an important role in the chemoresistance which might serve as a new therapeutic target for oral squamous cell carcinoma.

Key words: oral squamous cell carcinoma, X-linked inhibitor of apoptosis protein, chemoresistance