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过度表达的CD44与狼B细胞中通过HA-CD44-AIM2通路激活B细胞有关

Ping Yi¹, Pengpeng Cao², Ming Yang³

¹Department of Dermatology, Second Xiangya Hospital, Central South University, Hunan Key Laboratory of Medical Epigenomics, Changsha, Hunan, China; Department of Radiology, Xiangya Hospital, Central South University, Changsha, Hunan, China.

Clinical immunology (Orlando, Fla.)

|July 27, 2023

概括

系统性红斑狼 (SLE) 涉及异常的B细胞发育. 在B细胞中过度表达的CD44,通过黑色素瘤2 (AIM2) 中的氨酸-CD44-缺失通路,促进B细胞激活和增殖,提供潜在的SLE治疗点.

科学领域:

免疫学免疫学免疫学
自免疫性疾病自免疫性疾病
细胞生物学细胞生物学

背景情况:

系统性红斑狼 (SLE) 是一种自身免疫性疾病,其特征是B细胞异常和自身抗体过度产生.
在黑色素瘤2 (AIM2) 缺少影响B细胞分化,其缺乏会损害抗原诱导的B细胞反应.
CD44是一种T细胞标记物,在SLE中过度表达,但其在B细胞中的作用尚不清楚.

研究的目的:

研究CD44在系统性红斑狼 (SLE) B细胞中的作用和机制.
探索CD44,氨酸 (HA),AIM2和STAT3在SLE B细胞激活中的关系.

主要方法:

从SLE患者和MRL/lpr小鼠的B细胞中分析CD44和AIM2表达.
关于HA-CD44相互作用对B细胞激活,AIM2和STAT3表达的影响的体外研究.
在B细胞中对CD44,AIM2和STAT3进行实验性操纵,以评估对激活和增殖的影响.

主要成果:

在SLE患者和MRL/lpr小鼠的B细胞中,CD44和AIM2的表达被上调.
在SLE血清中,氨酸 (HA) 水平升高,HA-CD44相互作用促进B细胞激活,上调AIM2和STAT3.
阻断CD44或AIM2或抑制STAT3,可以抑制SLE模型中的B细胞激活和增殖.

结论:

在B细胞中过度表达的CD44通过外卵泡区域的HA-CD44-AIM2通路促进SLE病变.
HA-CD44-AIM2-STAT3轴代表了SLE的潜在治疗目标.

关键词:

在AIM2中,AIM2是AIM2.激活活动激活活动 B 细胞细胞B 细胞细胞 CD4444 是一个CD44 额外的毛囊细胞.哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈哈一个小小的东西.

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