“…Despite their unique usefulness, the therapeutic potential has not been consistent, and sometimes no improvement can be seen (Holan et al, 2016;Lohan et al, 2017). Given these difficulties, studies have shown that various chemical, physical, and genetic modification have improved the trophic effects of MSCs, e.g., adhesion, migration, survival, while limiting the senescence during an extended culture period (Jo et al, 2019;Jeon and Rho, 2020;Ocansey et al, 2020). Specifically, unfavorable microenvironment upon being cultured in vitro and being administrated in vivo precludes the clinical uses of cellbased therapeutic products (Li et al, 2019).…”