Hipóxia pode influenciar na performance de hMSCs? scoping review

Abstract

This study aimed to systematically review the literature as fort influence of the hypoxia on human mesenchymal stem cells (hMSCs). The review is reported in accordance with the PRISMA Statement. Two reviewers conducted a literature search of three databases: PubMed (Medline), Web of Science and Scopus, until May 2016. All studies that analyzed condition of hypoxia in the design experiment were included. Data regarding author, year of publication, cell type, tissue site type of study, oxygen concentration used, evaluation methods, induction time courseand main findings were tabulated to assess the following outcomes of interest: changes in (paracrine or autocrine effect) cell behavior(cell differentiation, viability/proliferation, migration). After screening a total of 1537 potentially relevant documents, 139 studies were subjected to qualitative analysis. In 69% of the studies, cellular modification was performed. Additionally, the most studied modifications were cell migration, proliferation/viability, differentiation and expression of VEGF, HIF-1a. In conclusion, there is evidence in the literature that the conditioning in hypoxia improves the metabolism and expression of hMSCs but this result cannot be extended to all type. In conclusion, most stem cells need of the hypoxia as the natural environment in their niches which will allowusing the at most and empower the performance in regenerative therapies.