器官移植2025，Vol.16Issue(2)：256-263,8.DOI:10.12464/j.issn.1674-7445.2024255
小鼠颈部异位心脏移植急性排斥反应模型中的动态免疫学特征
Dynamic immunological characteristics in acute rejection model of cervical heterotopic heart transplantation in mice
摘要
Abstract
Objective To establish an acute rejection model of cervical heart transplantation in mice and evaluate the survival and dynamic rejection process post-transplantation.Methods Mice were randomly divided into sham operation group(n=10),syngeneic transplantation group(n=21),and allogeneic transplantation group(n=65).Sham operation,syngeneic cervical heart transplantation,and allogeneic cervical heart transplantation were performed respectively.The survival of recipient mice and grafts,histopathological changes of graft tissues,subpopulations of splenic lymphocytes,and expression of inflammatory factors in serum and grafts were observed.Results The survival rate and graft survival rate of the sham operation group and syngeneic transplantation group were 100%at 7 days after surgery.In the allogeneic transplantation group,5 cases failed and died on the first day after surgery.The survival rate at 7 days after surgery was 86%,and all surviving mice had grafts that stopped beating at 7 days after surgery.The allogeneic transplantation group showed significant rejection at 7 days after surgery,accompanied by tissue damage and CD8+T cell infiltration.The proportion of CD8+T cells in the spleen continued to rise post-operation,while the proportion of CD4+T cells showed a downward trend.The expression of interferon-γ in serum and grafts peaked at 5 days after surgery,while the expression of tumor necrosis factor-α showed no statistical significance.Conclusions Acute rejection following heart transplantation in mice intensifies between 5 to 7 days after surgery,which may be a critical time window for immunological intervention.关键词
心脏移植/颈部/异位移植/小鼠/急性排斥反应/浸润/CD8+T细胞/CD4+T细胞Key words
Heart transplantation/Neck/Heterotopic transplantation/Mouse/Acute rejection/Infiltration/CD8+T cell/CD4+T cell分类
医药卫生引用本文复制引用
曹曦,黄涛,杨骐玮,王小文,朱文峰,陈浩琦,范宁,汪根树..小鼠颈部异位心脏移植急性排斥反应模型中的动态免疫学特征[J].器官移植,2025,16(2):256-263,8.基金项目
国家自然科学基金(82370663) （82370663）
汪根树团队科研启动经费(E533) （E533）
