Li HY, Li Y, Liu D, Sun HZ, Liu JG. LPS regulates epithelial-mesenchymal transition in cholangiocarcinoma cell line ICBD via the p38/MAPK signaling pathway.
Shijie Huaren Xiaohua Zazhi 2013;
21:2070-2075. [DOI:
10.11569/wcjd.v21.i21.2070]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of LPS on epithelial-mesenchymal transition (EMT) of cholangiocarcinoma ICBD cells and to explore the possible mechanisms involved.
METHODS: ICBD cells were randomly divided into four groups: a control group, a LPS (final concentration, 10 μg/mL) group, a LPS + siRNA group, and a LPS + SB203580 group. The expression of epithelial cell surface marker E-Cadherin, stromal cell surface marker Vimentin, TLR4 and p38 was examined by real-time RT-PCR and Western blot.
RESULTS: LPS promoted the initiation of EMT of ICBD cells. The expression of TLR4 and p38 significantly increased in the process of EMT of ICBD cells. SiRNA-mediated blockage of TLR4 inhibited the occurrence of EMT and the up-regulation of p38 in ICBD cells. When p38 was blocked by SB-203580, the expression of TLR4 was still up-regulated, but EMT of ICBD cells did not occur compared to the control group.
CONCLUSION: LPS may activate TLR4 and promote EMT of cholangiocarcinoma cells via the p38/MAPK signaling pathway.
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