ABSTRACT
Objective To explore the curative effects of mesenchymal stem cells(MSC)that overexpress in murine type 1 diabetes nephropathy (DN).Methods Mice were randomly divided into normal control(NC) group,DN group,C3-treated group,C3-MIGR1-treated group and C3-MIGR1-ICAM-1-treated group.Mice were given streptozotocin until the DN model was set up.The murine DN model was treated with murine MSC(C3H10T1/2),transfection empty vector of murine MSCs(C3H10T1/2-MIGR1/MSC) and murine MSCs (C3H10T1/2-ICAM-1/MSC)that overexpressed ICAM-1.After transplantation, the pathological features of kidneys were observed by Masson staining and the number of homing MSC cells to the kidney was calculated on days 1,3,7 by frozen section, while qPCR was used to analyze the expression of signaling molecules for collagen1, TGF-β1 and SMAD2 after treatment with various MSCs.Results Compared with DN group, the renal fibrosis treated with MSCs overexpressing ICAM-1 was significantly decreased by Masson staining.Three and seven days after transplant, the homing cells of MSC in different groups displayed no difference using tissue freezing section method.Furthermore, TGF-β1/SMAD signaling was lowly activated after the treatment with MSCs that overexpressed ICAM-1 compared with model mice(P<0.01).Conclusion MSCs that overexpress ICAM-1 can protect kidneys in the DN model.