PBLD调节了刺痛介导的抗病毒免疫反应和自身免疫性疾病
Peili Hou1, Hongchao Zhu1, Xiaonan Sun1
1Ruminant Diseases Research Center, Key Laboratory of Animal Resistant Biology of Shandong, College of Life Sciences, Shandong Normal University, Jinan, Shandong, 250358, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|November 8, 2025
概括
氨酸生物合成类域含蛋白 (PBLD) 调节STING抗病毒反应. 缺乏PBLD会增加病毒易感性,但会减少自身免疫性疾病,这表明它是一个治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 这是一种自身免疫力.
背景情况:
- 干扰素基因刺激器 (STING) 的精确调节对于免疫平衡和预防自身免疫性疾病至关重要.
- 刺信号传递对抗病毒防御至关重要,但其失调有助于自身免疫.
研究的目的:
- 确定STING表达的关键调节者及其在抗病毒免疫和自身免疫中的作用.
- 研究氨酸生物合成类域含蛋白 (PBLD) 在调节STING信号传递中的功能.
主要方法:
- 通过选择性自研究了PBLD在STING降解中的作用.
- 通过病毒感染分析了PBLD的调节,包括转录和后翻译机制.
- 使用病毒感染 (HAdV-4) 和自身免疫性疾病 (TMPD诱导的狼) 的小鼠模型.
- 评估了系统性红斑狼患者的PBLD表达.
主要成果:
- PBLD抑制了CCDC50介导的刺的自性降解.
- 病毒感染通过转录抑制 (TFEB) 和增强降解 (MARCH2-ubiquitin-proteasome通路) 下调PBLD.
- 缺乏Pbld的小鼠对HAdV-4的敏感性增加.
- 在狼模型中,Pbld缺陷减弱了STING表达,并减少了自身免疫表型.
- 升高的PBLD表达与狼患者的STING驱动型I型IFN信号相关.
结论:
- PBLD 作为 STING 抗病毒免疫的负反调节剂.
- 缺乏PBLD会加剧病毒感染,但可以改善自身免疫力.
- 在天生的免疫和自身免疫性疾病中,PBLD扮演着双重的角色,是潜在的治疗点.
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