Pathobiological mechanisms of peritoneal adhesions: The mesenchymal transition of rat peritoneal mesothelial cells induced by TGF-β1 and IL-6 requires activation of Erk1/2 and Smad2 linker region phosphorylation

Matrix Biology : Journal of the International Society for Matrix Biology
Xiaoling JinJoel Rosenbloom

Abstract

Peritoneal adhesions, primarily caused by surgical procedures, are the leading cause of pelvic pain, bowel obstruction, and infertility. TGF-β1 and IL-6 have been found to be elevated in the peritoneal fluid of patients during/after abdominal surgery. However, it remains to be determined whether these cytokines interact and facilitate adhesion formation by promoting mesothelial to mesenchymal transition (MMT). In the present study, isolated rat peritoneal mesothelial cells were treated with TGF-β1 and/or IL-6 which elicited MMT as determined by morphologic and biochemical techniques. During this transition, cellular morphology changed from that of cobblestone polygonal cells to elongated/spindle-shaped fibroblast-like cells. There was decreased expression of genes characteristic of mesothelial cells, such as E-cadherin, and increased expression of genes characteristic of the myofibroblast phenotype, including α-smooth muscle actin and the EDA form of fibronectin, both of which appear to mediate the transfer of force to the extracellular matrix. Partial characterization of relevant signaling pathways identified Erk1/2 activation, which was enhanced by combined TGF-β1/IL-6 administration, as a crucial necessary factor in the tran...Continue Reading

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Citations

Oct 4, 2016·Journal of Investigative Surgery : the Official Journal of the Academy of Surgical Research·Hussein M AttaHeba S Kamel
May 19, 2018·The Journal of Pathology·Sara NamvarSarah E Herrick
Mar 2, 2017·Applied Immunohistochemistry & Molecular Morphology : AIMM·Anna JungaOlafs Volrāts
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Jun 1, 2018·Experimental and Therapeutic Medicine·Hailing YuDa Li
Jul 15, 2017·Annals of Surgical Treatment and Research·Mehmet Dokur, Erdal Uysal
Feb 25, 2021·Journal of Investigative Surgery : the Official Journal of the Academy of Surgical Research·Tzu-Bou HsiehJian-Ping Jin
Aug 28, 2021·Biomedicines·Ali Fatehi HassanabadPaul W M Fedak

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