Pax5对B细胞分化发育调控作用的研究进展

被引:8
作者
马彪
逄越
王旭
刘庆平
李文哲
机构
[1] 大连大学免疫学研究所
关键词
转录因子Pax5; 启动子区和增强子; 表观遗传调控;
D O I
暂无
中图分类号
R392.11 [免疫分子生物学(免疫化学)];
学科分类号
100108 [医学免疫学];
摘要
转录因子Pax5在B细胞定向分化发育过程中发挥重要调控作用。B细胞定向分化发育相关的转录因子如PU.1、干扰素调节因子4(Interferon regulatory factor 4,IRF4)、IRF8和NF-κB结合在Pax5基因5’上游增强子区,转录因子EBF、STAT5结合在Pax5基因5’上游启动子区,从而共同促进Pax5基因的表达。表达的Pax5蛋白不仅通过IgH的V(D)J片段染色质的甲基化和乙酰化修饰来调节IgH V(D)J重排,并且通过B细胞特异性基因(mb-1、VpreB、λ5、CD19、BLNK等)表达调控B细胞的定向分化发育。若Pax5基因缺失,影响组蛋白H3-K9的修饰,导致B细胞向非B细胞分化。总之,Pax5在B细胞定向分化发育中起到重要调控作用。
引用
收藏
页码:624 / 627
页数:4
相关论文
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B细胞特异激活蛋白基因Pax5原核表达、纯化及多克隆抗体制备研究 [J].
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免疫学杂志, 2011, 27 (06) :519-522+543
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