Tan HX, Gao Y, Zhang HY, Wang Q. Effect on immunological rejection by recipient-derived bone marrow mesenchymal stem cells after orthotopic liver transplantation.
Shijie Huaren Xiaohua Zazhi 2007;
15:1191-1197. [DOI:
10.11569/wcjd.v15.i11.1191]
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Abstract
AIM: To investigate the distribution and effect of recipient-derived bone marrow mesenchymal stem cells (BM-MSCs) after orthotopic liver transplantation.
METHODS: The model of orthotopic liver transplantation was established using two-cuff method. Wistar rats were used as donors while Sprague Dawley rats were selected as recipients. The BM-MSCs were isolated by the combination of gradient density centrifugation and adhesion separation. The collected BM-MSCs were labeled with 5, 6-carboxyfluorescein diacetate succinimidyl ester (CFSE) and then infused into livers via portal vein after the operation. The distributions of BM-MSCs in liver, spleen, lung, and kidney were detected by fluorescence microscope 1、2 wk and 1 mo after the operation. Hepatic functions and immunological rejection in liver tissues were also detected.
RESULTS: BM-MSCs collected by gradient density centrifugation grew in an adhesion mode on the wall and had a ball-like appearance. The cells viability detected by trypanblau staining was about 98%. BM-MSCs were purified at the 3th generation. The method of labeling BM-MSCs with CFSE had high efficiency. After infusion, most BM-MSCs congregated in liver and reduced a little after one month. However, only few of them existed in spleen, lung and kidney. Liver function of group C, which received BM-MSCs infusion, was remarkably improved as compared with that of group B, which didn't received BM-MSCs infusion (F = 63.179, P < 0.01). The liver function was also statistically different between B and C group at various time points (F = 221.026, P < 0.01). Immunohistochemistry showed that the acute immunological rejection was dramatically alleviated in group C.
CONCLUSION: Infusion of recipient-derived BM-MSCs can alleviate acute immunological rejection after orthotopic liver transplantation.
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