Inhibition of heme oxygenase 1 expression by small interfering RNA decreases orthotopic tumor growth in livers of mice

被引:91
作者
Sass, Gabriele [1 ]
Leukel, Petra [1 ]
Schmitz, Volker [2 ]
Raskopf, Esther [2 ]
Ocker, Matthias [3 ]
Neureiter, Daniel [4 ]
Meissnitzer, Matthias [4 ]
Tasika, Elena [1 ]
Tannapfel, Andrea [5 ]
Tiegs, Gisa [1 ,6 ]
机构
[1] Univ Erlangen Nurnberg, Inst Expt & Clin Pharmacol & Toxicol, D-91054 Erlangen, Germany
[2] Univ Hosp Bonn, Dept Internal Med 1, D-53105 Bonn, Germany
[3] Univ Hosp Erlangen, Dept Med 1, D-91054 Erlangen, Germany
[4] Paracelsus Private Med Univ, Salzburger Landeskliniken, Inst Pathol, Salzburg, Austria
[5] Ruhr Univ Bochum, Inst Pathol, D-44780 Bochum, Germany
[6] Univ Med Ctr Hamburg Eppendorf, Ctr Internal Med, Div Exp Immunol & Hepatol, Hamburg, Germany
关键词
antiapoptotic protein; HCC; small interfering RNA; HO-1;
D O I
10.1002/ijc.23695
中图分类号
R73 [肿瘤学];
学科分类号
100214 ;
摘要
Endogenous overexpression of the antiapoptotic protein heme oxygenase 1 (HO-1) has been shown to occur in various cancer diseases and might contribute to cancer progression. We compared the expression levels of HO-1 in human liver to expression levels in hepatocellular carcinoma (HCC), as well as the effect of HO-1 inhibition by small interfering RNA (siRNA) on cellular survival and apoptosis in the mouse hepatoma cell lines Hepa129 and Hepa1-6 and on orthotopic tumor growth in immune-competent C3H/HeN mice. Our results show that HO-1 is frequently overexpressed in human HCC. Downmodulation of HO-1 by siRNA resulted in increased cellular damage and apoptosis, reduced proliferation, reduced growth of orthotopic HCC and reduced angiogenesis. Livers and kidneys of treated animals did not reveal signs of damage by this treatment. In conclusion, a specific knockdown of HO-1 might represent a novel therapeutic approach in HCC therapy. (C) 2008 Wiley-Liss, Inc.
引用
收藏
页码:1269 / 1277
页数:9
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