Hypoxia mesenchymal stem cells accelerate wound closure improvement by controlling α-smooth muscle actin expression in the full-thickness animal model
Nasihun T., Putra A., Amalina N.D., Hamra N.F., Tjipta A.
Abstract
BACKGROUND: The active myofibroblast producing extracellular matrix deposition regarding wound closure is characterized by alpha-smooth muscle actin (α-SMA) expression. However, the persistence of α-SMA expression due to prolonged inflammation may trigger scar formation. A new strategy to control α-SMA expression in line with wound closure improvement uses hypoxic mesenchymal stem cells (HMSCs) due to their ability to firmly control inflammation for early initiating cell proliferation, including the regulation of α-SMA expression associated with wound closure acceleration. AIM: This study aimed to explore the role of HMSCs in accelerating the optimum wound closure percentages through controlling the α-SMA expression. MATERIALS AND METHODS: Twenty-four full-thickness rats wound model were randomly divided into four groups: Sham (Sh), Control (C) by NaCl administration only, and two treatment groups by HMSCs at doses of 1.5×10<sup>6</sup> cells (T1) and HMSCs at doses of 3×10<sup>6</sup> cells (T2). HMSCs were incubated under hypoxic conditions. The α-SMA expression was analyzed under immunohistochemistry staining assay, and the wound closure percentage was analyzed by ImageJ software. RESULTS: This study showed a significant increase in wound closure percentage in all treatment groups that gradually initiated on days 6 and 9 (p < 0.05). In line with the increase of wound closure percentages on day 9, there was also a significant decrease in α-SMA expression in all treatment groups (p < 0.05), indicating the optimum wound healing has preceded. CONCLUSION: HMSCs have a robust ability to accelerated wound closure improvement to the optimum wound healing by controlling α-SMA expression depending on wound healing phases.
Expression of α-Smooth Muscle Actin Determines the Fate of Mesenchymal Stromal Cells
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Hypoxia impairs mesenchymal stromal cell-induced macrophage M1 to M2
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IL-10 inhibits transforming growth factor-ß-induction of Type I collagen mRNA expression via both JNK and p38 pathways in human lung fibroblasts
Arai T, Hoshino S, Inoue K, Yanagita M, Yano Y, Yoshida M
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El Ayadi A., Jay J.W., Prasai A.
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Medical Archives
Ichwan M., Farhat F., Ilyas S., Sembiring R.J., Munir D., Madiadipoera T., Putra A., Restimulia L., Amalina N.D.
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Interface Focus
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Indonesian Journal of Biotechnology
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