PMID- 16381641 OWN - NLM STAT- MEDLINE DCOM- 20070828 LR - 20051229 IS - 1007-3418 (Print) IS - 1007-3418 (Linking) VI - 13 IP - 12 DP - 2005 Dec TI - [Inhibition of mouse hepatocyte apoptosis by anti-caspase-12 small interfering RNA]. PG - 923-6 AB - OBJECTIVES: To study the inhibition of primary mouse hepatocyte apoptosis by small interfering RNA (siRNAs) against caspase-12. METHODS: The Balb/c mouse primary hepatocytes were isolated in situ with two-step liver perfusion with 0.5 g/L collagenase type IV, and apoptosis were induced with 4 micromol/L thapsigargin (TG). The three kingds of siRNAs targeting different gene sites (130, 214, 521) were synthetized chemically. The single-stranded RNAs were annealed to produce double-stranded siRNAs, then the mouse primary hepatocytes were transfected by oligofectamine package. The inhibition of caspase-12 was analyzed with RT-PCR and Western-blot. The viable hepatocytes following the induction of apoptosis were evaluated with MTT. RESULTS: All the three kinds of siRNAs could obviously inhibit normal mouse hepatocyte caspase-12 mRNA. The siRNA (214) were more effective than the other two when the concentration was 100 nmol/L. The caspase-12 mRNA expression was inhibited by 52.08%, while that of siRNA (521) was 30.73% (t=4.30, P <0.05). However when the concentration was 200 nmol/L, the inhibitions were similar (88.07%, 86.22% and 89.41% respectively). siRNA (214) could downregulate the expression of apoptotic hepatocytes procaspase-12 by 51.43% ( t=4.30, P <0.01). Contrasted with apoptotic hepatocytes, the cell activity, which was analyzed with MTT, increased by 48.76% (t=2.23, P <0.01). CONCLUSION: siRNAs could effectively downregulate the expression of caspase-12 at mRNA and protein levels and prevent mouse primary hepatocytes from apoptosis. FAU - Liu, Hai-fang AU - Liu HF AD - Department of Infectious Diseases, Ruijin Hospital, Shanghai Second Medical University, Shanghai 200025, China. FAU - Xie, Qing AU - Xie Q FAU - Jiang, Shan AU - Jiang S FAU - Li, Guang-ming AU - Li GM FAU - Zhou, Xia-qiu AU - Zhou XQ FAU - Shi, Yi AU - Shi Y FAU - Yu, Hong AU - Yu H FAU - Jin, You-xin AU - Jin YX LA - chi PT - English Abstract PT - Journal Article PL - China TA - Zhonghua Gan Zang Bing Za Zhi JT - Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology JID - 9710009 RN - 0 (RNA, Messenger) RN - 0 (RNA, Small Interfering) RN - EC 3.4.22.- (Caspase 12) SB - IM MH - Animals MH - Apoptosis/*physiology MH - Caspase 12/*biosynthesis/genetics MH - Hepatocytes/*cytology MH - Male MH - Mice MH - Mice, Inbred BALB C MH - RNA, Messenger/biosynthesis/genetics MH - RNA, Small Interfering/*genetics EDAT- 2005/12/31 09:00 MHDA- 2007/08/29 09:00 CRDT- 2005/12/31 09:00 PHST- 2005/12/31 09:00 [pubmed] PHST- 2007/08/29 09:00 [medline] PHST- 2005/12/31 09:00 [entrez] PST - ppublish SO - Zhonghua Gan Zang Bing Za Zhi. 2005 Dec;13(12):923-6.