All-trans retinoic acid enhances in vitro mesenchymal stem cells migration by targeting matrix metalloproteinases 2 and 9.

ObjectivesTo investigate the effect of all-trans retinoic acid (ATRA) on caspase 3 activity, matrix metalloproteinase 2 (MMP-2), and MMP-9 expression and activity as well as in vitro rat bone marrow-derived mesenchymal stem cells (MSCs) migration.ResultsThe expression of the MMP-2/-9 was at least five times higher in ATRA-treated MSCs (P < 0.001), and MMP-2/-9 activity was enhanced with increasing doses compared to the control MSCs. The caspase three activity was attenuated by ATRA preconditioning. Scratch test showed that ATRA could promote the migration capacity of the MSCs compared to the untreated MSCs in a dose-dependent manner.ConclusionATRA increases the in vitro migration capacity of the MSCs through stimulating the expression and activity of MMP-2/-9 and inhibiting caspase three enzyme activity.