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http://dx.doi.org/10.7314/APJCP.2012.13.1.289

Antifibrotic Effect of Curcumin in TGF-β1-Induced Myofibroblasts from Human Oral Mucosa  

Zhang, Shan-Shan (Department of Stomatology, Second Xiangya Hospital, Central South University)
Gong, Zhao-Jian (Department of Stomatology, Second Xiangya Hospital, Central South University)
Li, Wen-Hui (Department of Stomatology, Second Xiangya Hospital, Central South University)
Wang, Xiao (Department of Stomatology, Second Xiangya Hospital, Central South University)
Ling, Tian-You (Department of Stomatology, Second Xiangya Hospital, Central South University)
Publication Information
Asian Pacific Journal of Cancer Prevention / v.13, no.1, 2012 , pp. 289-294 More about this Journal
Abstract
Background: Myofibroblasts play an important role in the development of oral submucous fibrosis (OSF). In the current study, we investigate the effect of curcumin on growth and apoptosis of myofibroblasts derived from human oral mucosa. Methods: Myofibroblasts were generated by incubating fibroblasts, obtained from human oral mucosa, with transforming growth factor-${\beta}1$ (TGF-${\beta}1$). MTT, PI staining, and FACS assays were used to investigate curcumin's effect on proliferation and cell cycle of fibroblasts and myofibroblasts. Annexin V/PI binding and FACS assays were used to examine apoptosis of myofibroblasts, Western blotting to determine the levels of Bcl-2 and Bax, and enzyme-linked immunosorbant assay was employed to examine the levels of collagen type I and III in the supernatants of myofibroblasts. Results: Curcumin inhibits proliferation of fibroblasts and myofibroblasts; it also disturbs the cell cycle, induces apoptosis and decreases the generation of collagen type I and III in myofibroblasts, which are more sensitive to its effects than fibroblasts. Curcumin induces apoptosis in myofibroblasts by down-regulating the Bcl-2/ Bax ratio. Conclusion: Our results demonstrate the antifibrotic effect of curcumin in vitro. It may therefore be a candidate for the treatment of OSF.
Keywords
Curcumin; oral submucous fibrosis; myofibroblast; apoptosis; cell cycle;
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