中文摘要：

目的：探讨大鼠骨髓间质干细胞（MSC）对同种异体骨髓移植造血重建和免疫重建的影响。方法：建立大鼠同种异体骨髓移植模型，通过生存率分析、外周血象检测、免疫细胞计数和受体免疫功能检测，综合评价MSC对骨髓移植（bone marrow transplantation，BMT）后造血重建和免疫重建的作用。结果：（1）MSC可促进BMT后造血重建：移植后30d，共移植组外周血白细胞、淋巴细胞和血小板数均高于单纯骨髓移植组；共移植组骨髓细胞数也高于对照组。（2）MSC可促进BMT后免疫重建：移植后30d，共移植组胸腺细胞数、脾细胞总数均高于骨髓单纯移植组；共移植组对ConA、LPS刺激的淋巴细胞增殖反应以及对第三体来源的同种混合淋巴细胞反应均强于单纯BMT组。结论：大鼠MSC与骨髓共移植对同种异体骨髓移植造血重建和免疫重建有一定促进作用。

英文摘要：

AIM： To investigate effects of rBMMSC on hematopoiesis and immune reconstitution after allo-hematopoietic stem cells transplantation （HSCT）.METHODS：Allogeneic BMT model from Fischer344 rats （RT - 1A1） to Wistar rats （RT-1Au） was established. The effects of MSCs on hematopoietic reconstitution and immune reconstitution were studied by observing the survival rate, peripheral blood counts, thymus counts, spleen counts, bone marrow counts and immune function analysis at 30 days after transplantation. RESULTS： 1. Cotransplantation of MSCs and bone marrow （BM） was demonstrated to improve hematopoiefic reconstitution. Lymphocyte and platelet counts in peripheral blood in cotransplantation groups were higher than those in control groups. More bone marrow neucleated cells were also observed in cotransplantation groups. 2. Cotransplantation of MSCs and BM improved immune reconstitution. First, overall thymic cellularity and spleen cellularity significantly increased in cotransplantation groups at day 30. Secondly, cotransplantation improved immune functional recovery. Non-specific lymphocytes proliferation reaction induced by ConA and LPS increased in cotransplantation group, and so did for allogeneic mixed-lymphocyte reaction. CONCLUSION： Hematopoietic reconstitufion and immune reconsfitution were significantly enhanced by MSCs cotransplanted with BM.