通过先进的糖化终产品对STING/TBK1/IRF3信号进行不同的调制
Takashi Nishinaka1, Omer Faruk Hatipoglu1, Hidenori Wake1
1Department of Pharmacology, Kindai University Faculty of Medicine, 377-2 Ohno-Higashi, Osaka-Sayama, Osaka, 589-8511, Japan.
Archives of biochemistry and biophysics
|November 2, 2023
概括
先进的糖化终产物 (AGEs) 通过调节STING/TBK1/IRF3信号来影响天生的免疫系统. AGEs对这种途径的影响取决于它们形成时使用的特定碳化合物,其中一些抑制信号,另一个增强信号.
科学领域:
- 免疫学 免疫学 免疫学
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 先进的糖化终产品 (AGEs) 是由碳化合物和蛋白质之间的非酶反应形成的.
- 干扰素基因 (STING) / TANK结合激酶1 (TBK1) / 干扰素调节转录因子3 (IRF3) 途径的刺激器对于先天免疫反应至关重要.
研究的目的:
- 研究各种AGE对STING/TBK1/IRF3信号传输的不同影响.
- 确定AGE结构与其免疫调节活性之间的关系.
主要方法:
- 从不同的碳化合物 (葡萄糖,糖,糖,甲基糖,糖) 制备AGE.
- 评估AGE对循环GMP-AMP (cGAMP) 诱导的STING/TBK1/IRF3激活 in vitro的影响.
- 对与信号调制相关的氨酸修饰的分析.
主要成果:
- 由化物和二碳化合物衍生出的AGE通常以不同的效率抑制STING/TBK1/IRF3信号传递.
- 氨酸修饰与AGE的抑制能力相关.
- 一种由葡萄糖衍生的AGE (AGE1) 通过通类受体独特增强了STING/TBK1/IRF3激活.
结论:
- AGEs对STING/TBK1/IRF3信号的调制高度依赖于前体碳烯化合物的类型和度.
- AGEs可以抑制或增强先天免疫信号,这表明它在免疫调节中起着复杂的作用.
- 氨酸残留物修饰是AGE与STING/TBK1/IRF3通路相互作用的一个关键因素.
相关概念视频
The JAK-STAT Signaling Pathway
8.9K
Several cytokine receptors have tightly bound Janus kinase or JAK proteins attached at their cytosolic tail. Small signaling molecules such as cytokines, growth hormones, or prolactins bind to the cytokine receptors and initiate their dimerization. The dimerization brings the cytosolic JAKs together that trans-phosphorylate and activates each other. The activated JAKs now phosphorylate cytosolic tails of the cytokine receptors, which serve as binding sites for adaptor proteins such as SH2...
8.9K
TGF - β Signaling Pathway
7.4K
The TGF-β signaling pathway regulates cell growth, differentiation, adhesion, motility, and development. TGF-β ligands that induce TGF-β signaling are synthesized in their latent form. Several proteases or cell surface receptors such as integrins act upon the latent form, releasing the active ligand. There are three types of mammalian TGF-βs: (TGF-β1, TGF-β2, and TGF-β3) that bind as homodimers or heterodimers to TGF-β receptors. The TGF-β receptors...
7.4K
Intracellular Signaling Affects Focal Adhesions
2.7K
Integrins act both as extracellular input receivers and as intracellular processing activators. As their name suggests, integrins are entirely integrated into the membrane structure. Their hydrophobic membrane-spanning regions interact with the phospholipid bilayer's hydrophobic region. These membrane receptors provide extracellular attachment sites for effectors like hormones and growth factors. They activate intracellular response cascades when their effectors are bound and active.
Some...
Some...
2.7K
Regulation of Angiogenesis and Blood Supply
2.6K
Rapidly dividing tumors, embryos, and wounded tissues require more oxygen than usual, lowering the oxygen concentration in the blood. At low oxygen or hypoxic conditions, an oxygen-sensitive transcription factor called the hypoxia-inducible factor 1 or HIF1 is activated. HIF1 is a dimeric protein of alpha (ɑ) and beta (β) subunits. Under optimal oxygen conditions, HIF1β is present in the nucleus while HIF1ɑ remains in the cytosol. HIF1ɑ is hydroxylated by prolyl...
2.6K
PI3K/mTOR/AKT Signaling Pathway
3.6K
The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...
3.6K
GPCRs Regulate Adenylyl Cylase Activity
5.6K
Some GPCRs transmit signals through adenylyl cyclase (AC), a transmembrane enzyme. AC helps synthesize second messenger cyclic adenosine monophosphate (cAMP). AC catalyzes cyclization reaction and converts ATP to cAMP by releasing a pyrophosphate. The pyrophosphate is further hydrolyzed to phosphate by the enzyme pyrophosphatase, which drives cAMP synthesis to completion. However, cAMP is rapidly degraded to 5′ AMP by the enzymes phosphodiesterase (PDE), preventing overstimulation of...
5.6K


