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UBXN3B对于B型淋巴发育至关重要

Tingting Geng¹, Duomeng Yang¹, Tao Lin¹

¹Department of Immunology, School of Medicine, UConn Health, Farmington, CT, 06030, USA.

|July 17, 2024

概括

UBXN3B对B细胞发育和生存至关重要,维护BCR前信号传递. 它的缺失严重损害了适应性免疫力,并增加了对呼吸道病毒的脆弱性.

科学领域:

免疫学免疫学免疫学
分子生物学分子生物学
病毒学病毒学

背景情况:

含有乌比基调节X (UBX) 域的蛋白质 (UBXNs) 是乌比基连接酶和含有瓦洛的蛋白质的适配体,其体内功能表征不佳.
已知UBXN3B对抗DNA病毒的天生的免疫力和控制DNA/RNA病毒感染至关重要.
这项研究研究了UBXN3B在适应性免疫中的作用.

研究的目的:

阐明UBXN3B在适应性免疫中的作用,特别是B细胞发育和对病毒感染的反应.
确定UBXN3B缺乏对B淋巴细胞和免疫细胞信号传递的影响.

主要方法:

利用可诱导塔莫西芬的全球和B细胞特异性Ubxn3b淘汰赛小鼠来评估抗体反应和病毒病原性.
量化免疫群体,B细胞原始体,BCR信号传递和使用流动细胞计,免疫阻塞和免疫光显微镜的亡.
进行了骨髓转移和RNA测序 (单细胞和批量),以研究机制.

主要成果:

全球和B细胞特异性Ubxn3b淘汰小鼠显示出前体,不成熟和成熟B细胞数量的显著减少.
Ubnxn3b缺乏导致BCR前信号受损,细胞循环停止,成熟B细胞的亡增加,以及对呼吸道病毒的脆弱性增加.
淘汰赛小鼠的病毒载荷增加,肺部免疫病理延长,病毒特异性IgM/IgG产生减少.

结论:

UBXN3B对于B淋巴发育至关重要,以细胞内在的方式维持构成性BCR前信号和细胞存活.
UBXN3B在对抗病毒感染的适应性免疫力中起着至关重要的作用.

关键词:

B 细胞细胞B 细胞细胞在 COVID-19 疫情中,血液形成血液形成血液形成淋巴细胞形成的过程 UBXN UBXN 在线播放

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