Study of adenovirus mediated human p27kip1 antioncogene on the apoptosis in esophageal carcinoma cell lines / 中华消化杂志

ABSTRACT

Objective To study the effects of p27kip1 gene on the apoptosis in esophageal carcinoma cell lines EC 9706. Methods A replication deficient adenovirus vector encoding p27kip1(ad p27kip1) was constructed and human esophageal carcinoma cell lines EC 9706 were transduced in vitro. The cell apoptosis were determined by flow cytometry, TUNEL technique and DNA fragmentation analysis. Results Ad p27kip1 containing the p27kip1 sequence was successfully constructed and the virus titer was 1.24?10 12 CFU/ml. The transduction efficiency was 100% when multplicity of infection≥50. FCM analysis revealed a sub G 1 cell peak in ad p27kip1 transduced esophageal carcinoma cell lines. Agarose electrophoresis showed marked ladder. The difference of apoptotic index between the ad p27kip1 group and the control group was statistically significant(37.3?3.4 vs. 1.3?0.2, P