Secretome from Human Adipose-derived Mesenchymal Stem Cells Promotes Blood Vessel Formation and Pericyte Coverage in Experimental Skin Repair

Overview

Journal PLoS One

Specialties General Medicine
Science

Date 2022 Dec 19

PMID 36534643

Authors

Brysa M Silveira

Tiago O Ribeiro

Railane S Freitas

Ana C O Carreira

Marilda Souza Goncalves

Mari Sogayar

Roberto Meyer

Alexander Birbrair

Vitor Fortuna

Affiliations

Soon will be listed here.

Abstract

Human adipose tissue-derived stem cells (hASC) secretome display various therapeutically relevant effects in regenerative medicine, such as induction of angiogenesis and tissue repair. The benefits of hASC secretome are primarily orchestrated by trophic factors that mediate autocrine and paracrine effects in host cells. However, the composition and the innate characteristics of hASC secretome can be highly variable depending on the culture conditions. Here, we evaluated the combined effect of serum-free media and hypoxia preconditioning on the hASCs secretome composition and biological effects on angiogenesis and wound healing. The hASCs were cultured in serum-free media under normoxic (NCM) or hypoxic (HCM) preconditioning. The proteomic profile showed that pro- and anti-antiangiogenic factors were detected in NCM and HCM secretomes. In vitro studies demonstrated that hASCs secretomes enhanced endothelial proliferation, survival, migration, in vitro tube formation, and in vivo Matrigel plug angiogenesis. In a full-thickness skin-wound mouse model, injection of either NCM or HCM significantly accelerated the wound healing. Finally, hASC secretomes were potent in increasing endothelial density and vascular coverage of resident pericytes expressing NG2 and nestin to the lesion site, potentially contributing to blood vessel maturation. Overall, our data suggest that serum-free media or hypoxic preconditioning enhances the vascular regenerative effects of hASC secretome in a preclinical wound healing model.

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