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  • Title: Lithium chloride inhibits TGF-β1-induced myofibroblast transdifferentiation via PI3K/Akt pathway in cultured fibroblasts from Tenon's capsule of the human eye.
    Author: Chung EJ, Sohn YH, Kwon SH, Jung SA, Lee JH.
    Journal: Biotechnol Lett; 2014 Jun; 36(6):1217-24. PubMed ID: 24563318.
    Abstract:
    Excess scarring of the conjunctiva after glaucoma filtration surgery is a major cause of failure. Transforming growth factor (TGF)-β is critically involved in post-operative scarring. Lithium inhibits TGF-β-induced gene protein expression in corneal fibroblasts and inhibits TGF-β-induced epithelial mesenchymal transition. Here, we investigated the effects of LiCl on TGF-β1-mediated signaling pathways and on myofibroblast transdifferentiation of human Tenon's capsule fibroblasts (HTFs). LiCl treatment reduced expression of TGF-β1-induced α-SMA expression in HTFs. LiCl also decreased Akt phosphorylation induced by TGF-β1. TGF-β1-induced α-SMA expression was significantly decreased by LY294002 and Akt siRNA indicating that these changes are mediated by the PI3K/Akt pathway. Thus, LiCl induces the suppression of transdifferentiation stimulated by TGF-β1 by the regulation of PI3K/Akt signaling in HTFs.
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