Gene transfer of IGF1 attenuates hepatocellular apoptosis after bile duct ligation

Kenneth Pi-Chieh Wang, Liang Ming Lee, Tien Jen Lin, Shyr Ming Sheen-Chen, Jia Wei Lin, Wen Ta Chiu, Chien Che Wang, Kuo Sheng Hung

研究成果: 雜誌貢獻文章同行評審

7 引文 斯高帕斯(Scopus)

摘要

Background: Cholestasis occurs in a wide variety of human liver diseases, and hepatocellular injury is an invariant feature of cholestasis, causing liver dysfunction and inflammation, promoting fibrogenesis, and ultimately leading to liver failure. Insulin-like growth factor 1 (IGF1) acts in an autocrine and paracrine manner to promote glucose utilization, using phosphatidylinositol 3 kinase (PI3 K)/Akt, the downstream glycogen synthase kinase 3β (GSK3β), and anti-apoptotic pathways. This study investigated whether gene transfer of IGF1 could attenuate hepatocellular injury after bile duct ligation in rats. Materials and Methods: Experiments were performed in 80 male Sprague-Dawley rats. Thirty minutes after bile duct ligation, hydrodynamics-based gene transfection with IGF1 plasmid via rapid tail vein injection. The rats were randomly divided into the following four groups: sham operated; BDL treated with pCMV-IGF1 gene; BDL treated with vehicle for pCMV-LacZ gene; and BDL only. Results: IGF1 expression in liver after a single administration of IGF-1 plasmid was demonstrated. Liver function index, including serum alanine aminotransferase and aspartate aminotransferase, were significantly reduced in IGF1 gene transfer rats. We determined the mechanism of IGF1 gene transfer after BDL in terms of activation of Akt, inhibition of GSK3β, and blockage of caspase-9 cleavage. Furthermore, hepatocyte stellate cell activation was markedly inhibited in IGF1 gene-treated rats. Apoptosis was significantly attenuated by IGF1 gene therapy. Conclusions: This study demonstrated that gene transfer of IGF1 could attenuate hepatocellular apoptosis and injury after bile duct ligation in rats.
原文英語
頁(從 - 到)237-244
頁數8
期刊Journal of Surgical Research
167
發行號2
DOIs
出版狀態已發佈 - 五月 15 2011

ASJC Scopus subject areas

  • Surgery

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