而SESN1则对STING1进行负面调节,以维持先天性免疫均质
Lingxiao Xu1,2, Hongqian Zhang3, Zuocheng Qiu4
1Department of Rheumatology, The First Affiliated Hospital of Nanjing Medical University, Nanjing, China.
塞斯特林1 (SESN1) 负面调节STING1信号传递,对免疫恒温至关重要. 缺少SESN1增强了抗病毒防御,而其补充则减少了狼等自身免疫性疾病的炎症,表明了治疗潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 分子生物学分子生物学
- 自免疫性疾病 自免疫性疾病
背景情况:
- CGAS-STING1通路对于感知DNA和通过I型干扰素 (IFN-I) 生产启动抗病毒反应至关重要.
- 失调的STING1激活和过度的IFN-I可以导致组织损伤和自身免疫性疾病,需要精确调节免疫平衡.
研究的目的:
- 为了识别STING1信号传递的新型负调节者,以维持免疫平衡.
- 研究塞斯特林1 (SESN1) 在调节STING1活动中的作用及其对病毒感染和自身免疫性疾病的影响.
主要方法:
- 在单纯疹病毒-1 (HSV-1) 感染期间研究了SESN1表达的变化.
- 利用SESN1缺乏的小鼠来评估对HSV-1的抗病毒防御能力.
- 分析了人类系统性红斑狼 (SLE) 患者的SESN1表达和自身免疫性疾病的小鼠模型.
- 评估了SESN1补充对IFN-I产生和自身免疫反应 in vitro和 in vivo的影响.
- 通过与SQSTM1/p62.2的相互作用,阐明了SESN1对STING1降解的作用机制.
主要成果:
- 在HSV-1感染后,SESN1的表达下调,SESN1缺乏的小鼠对HSV-1的抗性增强.
- 在SLE患者和T Rex1淘汰赛 (KO) 鼠标模型中,SESN1表达减少,并且恢复SESN1抑制了IFN-I和自身免疫反应.
- 通过促进SQSTM1/p62-STING1相互作用,SESN1促进STING1的自降解.
结论:
- SESN1作为STING1的关键负调节剂,平衡抗病毒免疫和自身免疫.
- 通过控制STING1介导的IFN-I产生,SESN1在维持免疫平衡中发挥着关键作用.
- 对于 STING1 途径失调的传染性和自身免疫性疾病来说,SESN1 是一个潜在的治疗点.
更多相关视频
07:26Site Specific Lysine Acetylation of Histones for Nucleosome Reconstitution using Genetic Code Expansion in Escherichia coli
Published on: December 26, 2020
10:57RNAi-mediated Double Gene Knockdown and Gustatory Perception Measurement in Honey Bees Apis mellifera
Published on: July 25, 2013
相关概念视频
Role Of Notch Signalling In Intestinal Stem Cell Renewal
Direct cell-to-cell contact is needed for the activation of Notch signaling. The signal is initiated when a notch ligand binds to a receptor on an adjacent cell, also...
Role of Ephrin-Eph Signalling in Intestinal Stem Cell Renewal
The JAK-STAT Signaling Pathway
Regulation of the Unfolded Protein Response
Notch Signaling Pathway
The Notch gene came into the limelight in 1914 after the discovery that its mutation in Drosophila melanogaster leads to a serrated (or "notched") wing margin phenotype. It was not...
siRNA - Small Interfering RNAs
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
