Regulation of Semaphorin 3A in the Process of Cutaneous Wound Healing

    March 2022 in “ Cell Death and Differentiation ”
    Yang Zheng, Feng Jiang, Chao Wang, Mengjie Dong, Chundi Wang, Enshi Yan, Yi Wang, Zaiou Zhu, Xianbin Xiong, Xu Ding, Jinhai Ye, Yue He, Hongchuang Zhang, Junbo Zhou, Wei Zhang, Yunong Wu, Xiaomeng Song
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    Studysummary This study found that while autonomous Sema3A expression limited keratinocyte migration and delayed wound healing, non-autonomous application of recombinant Sema3A with EGF enhanced wound repair in mice. Our plain-language summary of this paper — not a Tressless recommendation.
    The study explored the role of Semaphorin 3A (Sema3A) in cutaneous wound healing, revealing its complex effects on keratinocyte behavior. Sema3A adenovirus plasmids transfection limited keratinocyte proliferation and migration, while Sema3A depletion in mice delayed wound closure. Conversely, recombinant Sema3A proteins enhanced keratinocyte migration and accelerated wound closure. The study found that recombinant Sema3A, in combination with EGF, maintained EGFR activation through interaction with NRP1, suggesting that combined administration of EGF and Sema3A could improve wound healing outcomes. These findings highlighted the paradoxical role of Sema3A in wound repair and suggested potential therapeutic applications.
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