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The DOI matches its Crossref record; 6 of the 6 references it cites were found in a registry or an index.

HucMSC-Exosome Mediated-Wnt4 Signaling Is Required for Cutaneous Wound Healing

Open access
Zhang, Bin, Wang, Mei, Gong, Aihua, Zhang, Xu, Wu, Xiaodan, Zhu, Yanhua, Shi, Hui, Wu, Lijun, Zhu, Wei, Qian, Hui, Xu, Wenrong·2015·Stem Cells

Abstract

Mesenchymal stem cell-derived exosomes (MSC-Ex) play important roles in tissue injury repair, however, the roles of MSC-Ex in skin damage repair and its mechanisms are largely unknown. Herein, we examined the benefit of human umbilical cord MSC-derived exosome (hucMSC-Ex) in cutaneous wound healing using a rat skin burn model. We found that hucMSC-Ex-treated wounds exhibited significantly accelerated re-epithelialization, with increased expression of CK19, PCNA, collagen I (compared to collagen III) in vivo. HucMSC-Ex promoted proliferation and inhibited apoptosis of skin cells after heat-stress in vitro. We also discovered that Wnt4 was contained in hucMSC-Ex, and hucMSC-Ex-derived Wnt4 promoted β-catenin nuclear translocation and activity to enhance proliferation and migration of skin cells, which could be reversed by β-catenin inhibitor ICG001. In vivo studies confirmed that the activation of Wnt/β-catenin by hucMSC-Ex played a key role in wound re-epithelialization and cell proliferation. Furthermore, knockdown of Wnt4 in hucMSC-Ex abrogated β-catenin activation and skin cell proliferation and migration in vitro. The in vivo therapeutic effects were also inhibited when the expression of Wnt4 in hucMSC-Ex was interfered. In addition, the activation of AKT pathway by hucMSC-Ex was associated with the reduction of heat stress-induced apoptosis in rat skin burn model. Collectively, our findings indicate that exosome-delivered Wnt4 provides new aspects for the therapeutic strategy of MSCs in cutaneous wound healing. Stem Cells 2015;33:2158–2168

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Metadata

Authors
Zhang, B., Wang, M., Gong, A., Zhang, X., Wu, X., Zhu, Y., Shi, H., Wu, L., Zhu, W., Qian, H., & Xu, W.
Venue
Stem Cells
Published
2015-05-13
Volume
33
Issue
7
Pages
2158-2168
ISSN
  • 1066-5099 (ISSN-L)
  • 1549-4918
OpenAlex
W2145142940
Cited by
792
References
6
FWCI
29.99
Type
journal article
Language
en
Open access
hybrid

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