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作 者:苗润生[1] 肖宏 周勇[1] 李鲲[1] 杨波[1] 勘武生[1]
机构地区:[1]武汉市普爱医院骨科,430033 [2]武汉中西医结合医院,430033
出 处:《中华实验外科杂志》2013年第2期370-372,共3页Chinese Journal of Experimental Surgery
基 金:武汉市科技攻关计划项目(201060938370)
摘 要:目的观察核因子一KB受体活化因子配体(Rankl)单克隆抗体对骨髓瘤小鼠体内调节性T细胞(Treg)分化的影响。方法用Rankl单克隆抗体通过尾静脉注射干预人骨髓瘤小鼠皮下模型后,检测肿瘤局部Treg浸润及Rankl的表达,小鼠模型分空白对照组A、高剂量组B、低剂量组C。结果抗体干预后,3组小鼠腹部皮下包块直径:A组(0.970±0.216)cm,B组(0.560±0.164)cm,C组(0.4104-0.152)CiTI(P〈0.05);流式细胞分析小鼠外周血Treg比率:A组(8.19±1.27)%,B组(6.32-t-O.74)%,C组(3.84.4-0.43)%(P〈0.05);逆转录一聚合酶链反应(1it—PCR)检测肿块局部RanklmRNA表达(ACt值):A组0.565±0.029,B组3.390-4-0.333,C组1.041-4-0.083(P〈0.01)。结论骨髓瘤细胞可能通过表达Rankl促进Treg的分化,抑制机体正常免疫,利用Rankl单克隆抗体阻断这一信号通路可以减少Treg的分化。Objective To study the receptor activator for nuclear factor-KB ligand (Rankl) mono- clonal antibody on differentiation of regulatory T cells (Treg) in mice with myeloma. Methods Rankl monoclonal antibody was injected through the caudal vein injection intervention people myeloma mice after subcutaneous model, detection tumor local Treg infiltration and Rankl expression, the mice model points blank control group A, high dose group B,low dose group C. Results Antibody intervention, three mice ab- dominal subcutaneous masses diameter:group A (0. 970 + O. 216 ) cm, (0. 560 ± 0. 164 ) cm group B, C group (0. 410 ±0. 152) cm, (P 〈0. 05) ;Flow cytometry analysis mice peripheral blood Treg ratio:group A ( 8.19 ± 1.27 ) %, group B ( 6. 32 ±0. 74 ) %, group C ( 3.84 ±0.43 ) %, ( P 〈 0.05 ) ; reverse transerip- tion-polymerase chain reaction (RT-PCR) detection mass local Rankl mRNA expression (A Ct value) :A group of 0.565 ±0.029,3.390±0.333 group B,C group 1.041 ±0.083,(P〈O. 01). Conclusion Mul- tiple myeloma cells may through the express Rankl promote Treg differentiation, suppress the normal im- mune,using Rankl monoclonal antibody blockin~ the signal path can reduce Treg differentiation.
关 键 词:Rankl单克隆抗体 多发性骨髓瘤 调节性T细胞
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