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KMID : 0624620220550020087
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BMB Reports
2022 Volume.55 No. 2 p.87 ~ p.91
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Aurora kinase A induces migration and invasion by inducing epithelial-to-mesenchymal transition in colon cancer cells
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Hong On-Yu
Kang Sang-Yull
Noh Eun-Mi
Yu Hong-Nu
Jang Hye-Yeon
Kim Seong-Hun
Hong Jin-Gyu
Chung Eun-Yong
Kim Jong-Suk
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Abstract
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Aurora kinase is a family of serine/threonine kinases intimately associated with mitotic progression and the development of human cancers. Studies have shown that aurora kinases are important for the protein kinase C (PKC)-induced invasion of colon cancer cells. Recent studies have shown that aurora kinase A promotes distant metastasis by inducing epithelial-to-mesenchymal transition (EMT) in colon cancer cells. However, the role of aurora kinase A in colon cancer metastasis remains unclear. In this study, we investigated the effects of aurora kinase A on PKC-induced cell invasion, migration, and EMT in human SW480 colon cancer cells. Treatment with 12-O-tetradecanoylphorbol-13-acetate (TPA) changed the expression levels of EMT markers, increasing α-SMA, vimentin, and MMP-9 expression and decreasing E-cadherin expression, with changes in cell morphology. TPA treatment induced EMT in a PKC-dependent manner. Moreover, the inhibition of aurora kinase A by siRNAs and inhibitors (reversine and VX-680) suppressed TPA-induced cell invasion, migration, and EMT in SW480 human colon cells. Inhibition of aurora kinase A blocked TPA-induced vimentin and MMP-9 expression, and decreased E-cadherin expression. Furthermore, the knockdown of aurora kinase A decreased the transcriptional activity of NF-κB and AP-1 in PKC-stimulated SW480 cells. These findings indicate that aurora kinase A induces migration and invasion by inducing EMT in SW480 colon cancer cells. To the best of our knowledge, this is the first study that showed aurora kinase A is a key molecule in PKC-induced metastasis in colon cancer cells.
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KEYWORD
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Aurora kinase A, Colon cancer, Epithelia?to-mesenchymal transition, Matrix metalloproteinase-9, Protein kinase C
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