title: Overexpression of Livin promotes migration and invasion of colorectal cancer cells by induction of epithelial-mesenchymal transition via NF-κB activation.
abstract: Livin is a novel member of the inhibitors of apoptosis protein family and has been implicated in the development and progression of colorectal cancer (CRC). However, the underlying mechanisms of Livin in CRC remain not fully understood. In this study, we investigated the effects of Livin expression on the proliferation and metastasis of CRC cells and also addressed its related molecular mechanism to metastasis. The expression of Livin in CRC cells (HCT116, SW480, and HT-29 cell lines) was determined by Western blot analysis. Our results show that the overexpression of Livin significantly promotes the proliferation, migration, and invasion of SW480 cells. Concurrently, the inhibition of Livin reduces the proliferation, migration, and invasion of HCT116 cells. In addition, Livin overexpression promotes the epithelial-mesenchymal transition, as evidenced by a decrease in epithelial E-cadherin expression and an increase in mesenchymal markers, including vimentin, Slug, and Snail. Furthermore, adding the NF-κB inhibitor, BAY 11-7028, or transfecting with small interfering RNA against p65 notably restores the expression level of E-cadherin and attenuates the invasive ability of Livin-overexpressing cells. Taken together, these results indicate that Livin potentiates migration and invasion of CRC cells partially through the induction of epithelial-mesenchymal transition via NF-κB activation. Livin may be a potential therapeutic target for CRC.
authors.affiliation: The Sixth Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China; Department of General Surgery, General Hospital Under the Fushun Mining Affairs Bureau, Fushun, People's Republic of China.
authors.forename: Yang
authors.initials: Y
authors.lastname: Ge
authors.affiliation: The Sixth Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China.
authors.forename: Xiankui
authors.initials: X
authors.lastname: Cao
authors.affiliation: The Eighth Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China.
authors.forename: Dalu
authors.initials: D
authors.lastname: Wang
authors.affiliation: The Sixth Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China.
authors.forename: Wei
authors.initials: W
authors.lastname: Sun
authors.affiliation: The Sixth Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China.
authors.forename: Hongli
authors.initials: H
authors.lastname: Sun
authors.affiliation: The Sixth Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China.
authors.forename: Bing
authors.initials: B
authors.lastname: Han
authors.affiliation: The Sixth Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China.
authors.forename: Junpeng
authors.initials: J
authors.lastname: Cui
authors.affiliation: The Sixth Department of General Surgery, Shengjing Hospital of China Medical University, Shenyang, People's Republic of China.
authors.forename: Baolin
authors.initials: B
authors.lastname: Liu
keywords: Livin; NF-κB; colorectal cancer; epithelial-mesenchymal transition; invasion; migration