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Injectable co-gels of collagen and decellularized vascular matrix improve MSC-based therapy for acute kidney injury.
Journal of Biomaterials Science. Polymer Edition 2017 December
Transplantation of mesenchymal stem cells (MSCs) is promising for treatment of acute kidney injury (AKI), but their therapeutic effects are often limited under normal conditions. In this study, we prepared the co-gels of decellularized vascular matrix and collagen, and investigated whether the co-gels increase the therapeutic potentials of MSCs on AKI. In vitro studies indicated that the co-gels enhanced the paracrine effects of MSCs, and significantly reduced the apoptosis of MSCs under oxidative environments. When the co-gels were co-transplanted with MSCs into the kidney of model rats with ischemia-reperfusion (I/R)-induced AKI, the survival and paracrine effects of MSCs were enhanced in the injured kidney. More importantly, the co-gels increased the therapeutic effects of MSCs for AKI, as indicated by cell apoptosis, tissue damage, vascularization and renal function. Therefore, the co-gels of decellularized vascular matrix and collagen improved the therapeutic effects of MSCs, and might be promising for AKI treatment.
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