4.5 Article

Effect of transforming growth factor-β3 on the expression of Smad3 and Smad7 in tenocytes

Journal

MOLECULAR MEDICINE REPORTS
Volume 13, Issue 4, Pages 3567-3573

Publisher

SPANDIDOS PUBL LTD
DOI: 10.3892/mmr.2016.4944

Keywords

transforming growth factor-beta; Smad; adhesion; tendon; cell signaling

Funding

  1. National Natural Science Foundation of China [81000807]

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Tendon adhesion is a common problem in the healing of injured tendons. The molecular mechanisms of the TGF-beta/Smad signaling pathway have been determined, and the role of TGF-beta has been well characterized in wound healing. However, the intracellular mechanism or downstream signals by which TGF-beta 3 modulates its effects on tendon healing have not been well elucidated. The aim of this study was to determine the effect of TGF-beta 3 on the TGF-beta/Smad signaling pathway in tenocytes. Quantitative polymerase chain reaction and western blot analysis were used to analyze the effect of TGF-beta 3 on the regulation of the expression of Smad proteins in tenocytes. The results demonstrated that TGF-beta 3 has no significant effect on the proliferation of tendon cells. The addition of TGF-beta 3 to tenocytes can significantly downregulate the expression of Smad3 and upregulate the expression of Smad7 at the gene and protein levels. The results demonstrate that TGF-beta 3 may regulate Smad3 and Smad7 proteins through the TGF-beta/Smad signaling pathway to minimize extrinsic scarring. Thus, it may provide a novel approach to decrease tendon adhesion and promote tendon healing.

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