多途径联合诱导器官移植耐受和促进免疫功能重建  

Studies on the induction of transplantation tolerance and immune reconstitution through combinated strategies

作　　者：谢蜀生[1] 金永柱[1] 李爱玲[1] 秦凤华[1] 王光明[1] 马建波[1] 郝洁[1] 高翔[1] 

机构地区：[1]北京大学基础医学院免疫学系,北京100083

出　　处：《北京大学学报（医学版）》2007年第5期547-549,共3页Journal of Peking University:Health Sciences

基　　金：国家自然科学基金重点项目(39830340);国家自然科学基金面上项目资助(30170895)~~

摘　　要：SUMMARY The induction of transplantation tolerance and the improvement of immune reconstitution after allogeneic bone marrow transplantation are the main research fields in the clinic organ transplantation and transplantation immunology.Over the past 5 years serial studies have been performed in our lab to induce robust transplantation tolerance by using combinated strategies and improve the immune reconstitution of mice following allogeneic bone marrow transplantation by using gene-engineered bone marrow stromal cells.The results are encouraging.(1)The long-term survival of allografts was received by blockade of both CD28/B7 and CD40/CD40L or CD28/B7 and OX40/OX40L costimulating signals.In the case of blockade of both CD28/B7 and OX40/OX40L,the islet allograft survival was over 150 days compared to the control 14 days.(2)The CTLA4Ig-FasL fusion molecule expressed by adenoviral vector containing CTLA4Ig-FasL gene can prevent the autoimmune diabetes of mice and significantly prolong the survival time of cardiac allografts in rats,indicating that Fas-FasL-mediated apoptosis is able to enhance CTLA4Ig-induced transplantation tolerance.(3)In the time-window of peripheral tolerance induced by various methods,the systemic infusion of donor bone marrow cells and spleen cells obtained stable allogeneic mixed chimerisms and robust transplantation tolerance.In the case of CTLA4Ig-FasL treatment combinated with donor bone marrow cells more than 20% donor-origin blood cells chimerism,and more than 200 days prolonged skin allograft survival were obtained or received.(4)The murine bone marrow stromal cell line QXMSC1 transfected with IL-6 gene or IL-2+IL-3 genes significantly improved the immune reconstitution of mice following allogeneic bone marrow transplantation.Furthermore,It was observed that the mesenchymal stem cells transfected with IL-7 gene suppressed 90% of GVHD and expressed antileukemic effect,while accelerating immune reconstitution in mice following allogeneic bone marrow transplantation,which might be valuableThe induction of transplantation tolerance and the improvement of immune reconstitution after allogeneic bone marrow transplantation are the main research fields in the clinic organ transplantation and transplantation immunology.Over the past 5 years serial studies have been performed in our lab to induce robust transplantation tolerance by using combinated strategies and improve the immune reconstitution of mice following allogeneic bone marrow transplantation by using gene-engineered bone marrow stromal cells.The results are encouraging.（1）The long-term survival of allografts was received by blockade of both CD28/B7 and CD40/CD40L or CD28/B7 and OX40/OX40L costimulating signals.In the case of blockade of both CD28/B7 and OX40/OX40L,the islet allograft survival was over 150 days compared to the control 14 days.（2）The CTLA4Ig-FasL fusion molecule expressed by adenoviral vector containing CTLA4Ig-FasL gene can prevent the autoimmune diabetes of mice and significantly prolong the survival time of cardiac allografts in rats,indicating that Fas-FasL-mediated apoptosis is able to enhance CTLA4Ig-induced transplantation tolerance.（3）In the time-window of peripheral tolerance induced by various methods,the systemic infusion of donor bone marrow cells and spleen cells obtained stable allogeneic mixed chimerisms and robust transplantation tolerance.In the case of CTLA4Ig-FasL treatment combinated with donor bone marrow cells more than 20% donor-origin blood cells chimerism,and more than 200 days prolonged skin allograft survival were obtained or received.（4）The murine bone marrow stromal cell line QXMSC1 transfected with IL-6 gene or IL-2＋IL-3 genes significantly improved the immune reconstitution of mice following allogeneic bone marrow transplantation.Furthermore,It was observed that the mesenchymal stem cells transfected with IL-7 gene suppressed 90% of GVHD and expressed antileukemic effect,while accelerating immune reconstitution in mice following allogeneic bone marrow transplantation,which might b

关 键 词：移植耐受 细胞凋亡 移植嵌合体 间质干细胞 

分 类 号：R392.4[医药卫生—免疫学]