Downregulation of nuclear factor-κB p65 subunit by small interfering RNA synergizes with gemcitabine to inhibit the growth of pancreatic cancer

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• 作者：Rui Kong ; Bei Sun ; Hongchi Jiang ; Shangha Pan ; Hua Chen ; Shuangjia Wang ; Geoffrey W. Krissansen ; Xueying Sun
• 关键词：Pancreatic cancer ; Nuclear factor-κ ; B ; Gemcitabine ; Small interference RNA
• 刊名：Cancer Letters
• 出版年：2010
• 出版时间：1 May 2010
• 年：2010
• 卷：291
• 期：1
• 页码：90-98
• 全文大小：2730 K

文摘

The clinical benefit of gemcitabine for pancreatic cancer is low due to chemoresistance. Nuclear factor (NF)-κB, constitutively activated in pancreatic cancer, is a therapeutic target as it upregulates expression of genes controlling proliferation, apoptosis and angiogenesis. This study aimed to investigate whether downregulation of the p65 subunit of NF-κB by siRNA could enhance the efficacy of gemcitabine to treat pancreatic cancer. p65 siRNA synergized with gemcitabine to inhibit the proliferation and induce the apoptosis of pancreatic cancer cells in vitro and in vivo, and suppress the growth and angiogenesis of pancreatic tumors in nude mice. The mechanisms involved inhibition of NF-κB activity and consequent inhibition of Bcl-2, cyclin D1 and VEGF, and activation of caspase-3. The results suggest that downregulation of NF-κB p65 potentiates the efficacy of gemcitabine in combating pancreatic cancer.