RANTES在CD4+Tm细胞介导小鼠心脏移植急性排斥反应中的表达及意义  

Role of RANTES in evolution of ailoreactive CD4+ memory T cells adoptive transfer-induced cardiac allograft acute rejection

在线阅读下载全文

作  者:周小彪[1] 单忠贵[1] 梁华[2] 邱水玮[1] 林智[2] 

机构地区:[1]厦门大学附属第一医院心脏外科,361003 [2]厦门大学医学院中心实验室

出  处:《中华器官移植杂志》2012年第11期680-683,共4页Chinese Journal of Organ Transplantation

基  金:基金项目:福建省重点课题资助项目(闽科计[2008]59)

摘  要:目的探讨趋化因子RANTES在CD4+记忆性T淋巴细胞(Tm细胞)介导的小鼠心脏移植急性排斥反应中表达的变化及意义。方法以Balb/c小鼠为供鼠,C57BL/6小鼠为受鼠,进行皮肤移植,提取并纯化受鼠脾脏中的CIN+Tm细胞。分为两组进行实验:实验组,C57BL/6小鼠输注1×10^6个CD4+Tm细胞,第2天以Balb/c小鼠为供鼠,进行颈部异位心脏移植;对照组,C57BL/6小鼠未输注CIN+Tm细胞,直接进行心脏移植。观察两组移植心脏存活时间和组织病理学改变,检测移植物中RANTES基因的相对表达量及RANTES在受鼠血清中的浓度。结果皮肤移植受鼠脾脏中CD4+Tm细胞达到26.83%。对照组受鼠存活时间为(7.67±0.21)d,实验组为(5.17±0.17)d(P〈0.01)。对照组移植心脏急性排斥反应的评级为(2.67±0.14)级,实验组为(3.92±0.08)级(P〈0.01)。实验组移植心脏中RANTES基因的相对表达量为对照组的(2.6±0.21)倍(P〈0.01)。实验组血清中RANTES浓度为(223.6±16.79)pg/ml,对照组为(120.7±9.47)pg/ml(P〈0.01)。结论接受CIN+Tm细胞输注的心脏移植受鼠,其体内RANTES的表达量明显增加,加速了急性排斥反应的发生。Objective To observe the influence of chemokine RANTES influence on cardiac allograft acute rejection caused by alloreactive memory CD4+ T ceils (Tin) adoptive transfer. Methods Heterotopic heart transplantation (HTx) from Balb/c donors to C57BL/6 recipients was performed by anastomosis of the vessels of the neck. Mice undergoing heterotopic heart transplantation received either adoptive transfer of 1 × 10^6 CD4+ Tm from the spleen of alloantigen-primed C57BL/6 mice or no cells (control group). After the cardiac transplantation, the mean survival time (MST), mean histologic rank of rejection, relative gene expression and serum concentration of RANTES in the cardiac grafts. Results ( 1 ) The percentage of CD4 +Tm was 26. 83 % at the spleen of alloantigen- primed mice; (2) The MST was 5.17 ±0. 17 days in the CD4+Tm + HTx group versus 7. 76 ±0. 21 days at the HTx group (control group) (P〈0. 01 ); (3) The histological tests revealed that mean histologic rank of rejection activity in the sections of cardiac allografts on the day 5 post-grafting was grade 3.92 ± 0. 08 in the HTx+ CD4+ Tm group versus grade 2. 67 ± 0. 14 in HTx group (P^0. 01) ; (4) The relative gene expression level o~ RANTES was 2. 6 ±0. 21 in the CD4+ Tm+ HTx group, significantly higher than in the control group (P^0. 01) ; (5) The serum concentration of RANTES in the CD4+ Tin+ HTx group was 223.6 + 16. 79 pg/mL, higher than in the control group (120. 7 ± 9. 47 pg/mL, P〈0. 01). Conclusion Alloreactive CD4+Tm contribute to the increased expression and secretion of RANTES, and cardiac allograft acute rejection was more extensive in the CD4+ Tin+ HTx group.

关 键 词:趋化因子类 CD4+T淋巴细胞 心脏移植 急性排斥反应 小鼠 

分 类 号:R654.2[医药卫生—外科学]

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象