A Novel Replication-competent Adenovirus CNHK500 in the Treatment of Heptocellular Carcinoma In Vitro  

一种新型增殖型腺病毒治疗肝癌的体外研究

作　　者：张琪[1] 吴孟超[1] 李月敏[1] 彭林辉[1] 钱其军[1] 

机构地区：[1]上海东方肝胆外科医院病毒基因治疗实验室,200438

出　　处：《The Chinese-German Journal of Clinical Oncology》2004年第2期70-73,124,共5页中德临床肿瘤学杂志（英文版）

基　　金：This work is supported by International Cooperation Important Project of National Natural Science Foundation of China(No.30120160824);the State 863 High Technology R&D Project of China(No.2001AA217031).

摘　　要：Objective: To evaluate the therapeutic efficacy of replicative adenovirus CNHK500 in the treatment of hepatocellular carcinoma. Methods: Virus proliferation assay, cell viability assay and Western blot were performed to assess the selective replication and cytolysis of CNHK500 in telomerase positive liver cancer cells Hep3B, HepGII, SMMC7721 and in normal cells. Results: The replicative multiples of CNHK500 in HepGII, Hep3B and SMMC7221 after 96 h of virus proliferation were 52 000, 396 984.9 and 632 911.3 fold respectively, similar to those of wtAd5. However, CNHK500 demonstrated more significant attenuated replicative ability in normal cell lines than wtAd5. CNHK500 replicated only 3.1-100 fold at 96 h, while the wtAd5 still reached 3160-17 357 fold. CNHK500 could cause half of HepGII cells death within 7 days at MOI 2, in Hep3B cell lines the IC50 was as low as MOI 0.01, whereas the IC50 in BJ cell was as high as MOI 1000. CNHK500 E1A protein could only be detected in hepatocellular cancer cells but not in normal cells under normoxia. E1B protein could only be detected under hypoxia condition at a MOI of 1. Conclusion: CNHK500 can efficiently replicate in and kill liver cancer cells as well as wtAd5 do while it is severely attenuated in proliferation and cytolysis among normal cells. It would be a prominsing strategy for liver cancer tratment.

关 键 词：replicative adenovirus hepatocellular carcinoma VIROTHERAPY TELOMERASE HYPOXIA 

分 类 号：R735.7[医药卫生—肿瘤]