Fig. 5From: Bifidobacterial recombinant thymidine kinase-ganciclovir gene therapy system induces FasL and TNFR2 mediated antitumor apoptosis in solid tumorsCaspase-3 downstream apoptosis-related genes are up-regulated in BF-rTK + GCV induced apoptosis. a–c Colo320 intestinal xenograft tumor tissues treated by GCV, BF + GCV and BF-rTK + GCV were collected and RNA was extracted from tumor tissues (n = 3). Gene transcription of Rock-1 (a), Acinus (b) and Cad (c) were analyzed by qRT-PCR using specific primers. All values were normalized to GAPDH as an internal control and were expressed relative to tumors treated with GCV in each case (*P < 0.05 statistically significant when comparing treated versus control)Back to article page