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Abstract Title:

Astragaloside IV Promotes Anti-Photoaging by Enhancing the Proliferation and Paracrine Activity of Adipose-Derived Stem Cells.

Abstract Source:

Stem Cells Dev. 2020 Jul 23. Epub 2020 Jul 23. PMID: 32703122

Abstract Author(s):

Yanchao Niu, Yunfei Chen, Haoying Xu, Qiaoling Wang, Chunling Xue, Rongjia Zhu, Robert Chunhua Zhao

Article Affiliation:

Yanchao Niu

Abstract:

Photoaging is a degenerative biological process. As a kind of pluripotent stem cells, adipose-derived stem cells (ADSCs) are widely used in the treatment of photoaging. Therefore, we aimed to find an effective way to improve the anti-aging ability of ADSCs. In this study, we isolated ADSCs and assessed multi-lineage differentiation ability and markers. Cultured ADSCs were preconditioned with astragaloside IV (ASI) at 10-7M, 10-6M, and 10-5M. Cell proliferation was assessed by CCK-8 assay and cytokine secretion by ELISA. A fibroblast photoaging model was established and co-cultured with normal ADSCs or ASI-treated ADSCs. Matrix metalloproteinase-1 (MMP1) and type I procollagen (PC-I) secreted by human dermal fibroblasts (HDFs) were measured by ELISA. The effects of ASI-treated ADSCs on skin texture, including dermal thickness, collagen content, and microvessel density, in a photoaging animal model were analyzed using H&E staining, Masson staining, and CD31 immunohistochemistry, respectively. We found that 10-6M ASI could significantly promote cell proliferation and stimulate robust secretion of growth factors in ADSCs. Furthermore, our data showed that ASI-treated ADSCs could markedly reverse the ultraviolet B (UVB)-induced decrease of PC-I secretion and increase of MMP-1 release in fibroblasts. Moreover, in photoaged skin of nude mice, ASI-treated ADSCs significantly increased dermal thickness, collagen content, and microvessel density. Our results indicated that preconditioning with ASI stimulated ADSCs to secrete more useful growth factors and activate dermal fibroblasts and thus could be a potentially safe strategy to improve ADSC-based therapy.

Study Type : In Vitro Study

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