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Plectin Downregulation Inhibits Migration and Suppresses Epithelial Mesenchymal Transformation of Hepatocellular Carcinoma Cells via ERK1/2 Signaling.

Abstract
Plectin, as a cytoskeleton-related protein, is involved in various physiological and pathological processes of many cell types. Studies have found that plectin affects cancer cell invasion and metastasis, but the exact mechanism is not fully understood. In this study, we aim to investigate the role of plectin in the migration of hepatocellular carcinoma (HCC) cells and explore its relevant molecular mechanism. Herein, we found that the expression of plectin in HCC tissue and cells was significantly increased compared with normal liver tissue and cells. After downregulation of plectin, the migration ability of HCC cells was significantly lower than that of the control group. Moreover, the expression of E-cadherin was upregulated and the expression of N-cadherin and vimentin was downregulated, suggesting that plectin downregulation suppresses epithelial mesenchymal transformation (EMT) of HCC cells. Mechanically, we found that plectin downregulation repressed the extracellular signal-regulated kinase 1/2 (ERK1/2) phosphorylation. Activation of ERK1/2 recovered the plectin downregulation-inhibited migration and EMT of HCC cells. Taken together, our results demonstrate that downregulation of plectin inhibits HCC cell migration and EMT through ERK1/2 signaling, which provides a novel prognostic biomarker and potential therapeutic target for HCC.
AuthorsRushuang Xu, Shan He, Di Ma, Rui Liang, Qing Luo, Guanbin Song
JournalInternational journal of molecular sciences (Int J Mol Sci) Vol. 24 Issue 1 (Dec 21 2022) ISSN: 1422-0067 [Electronic] Switzerland
PMID36613521 (Publication Type: Journal Article)
Chemical References
  • Mitogen-Activated Protein Kinase 3
  • Plectin
  • PLEC protein, human
Topics
  • Humans
  • Carcinoma, Hepatocellular (metabolism)
  • Cell Line, Tumor
  • Cell Movement
  • Down-Regulation
  • Epithelial-Mesenchymal Transition (genetics)
  • Gene Expression Regulation, Neoplastic
  • Liver Neoplasms (metabolism)
  • MAP Kinase Signaling System
  • Mitogen-Activated Protein Kinase 3 (genetics, metabolism)
  • Neoplasm Invasiveness (genetics)
  • Plectin (genetics, metabolism)

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