cGAS-STING通路:糖尿病及其并发症的治疗点
Wenjie He1,2, Xingrui Mu1,2, Xingqian Wu1,2
1Key Lab of the Basic Pharmacology of the Ministry of Education, Zunyi Medical University, No. 6 Xuefu West Road, Xinpu New District, Zunyi 563006, China.
Burns & trauma
|February 5, 2024
概括
炎症阻碍了糖尿病伤口愈合 (DWH). 循环GMP-AMP合成酶 (cGAS) 刺激干扰素基因 (STING) 途径驱动这种炎症,但抑制它有望改善DWH结果.
科学领域:
- 细胞生物学 细胞生物学
- 免疫学 免疫学 免疫学
- 内分泌学 在内分泌学.
背景情况:
- 糖尿病伤口愈合 (DWH) 被慢性炎症显著阻碍.
- 循环GMP-AMP合成酶 (cGAS) 刺激干扰素基因 (STING) 途径是炎症反应的关键调节者.
- 在DWH病理学中cGAS-STING激活的特定作用尚未完全理解.
研究的目的:
- 审查证据,将cGAS-STING通路激活与受损的DWH联系起来.
- 总结当前关于cGAS-STING如何加剧糖尿病伤口中的炎症,衰老和代谢功能障碍的知识.
- 确定知识差距,并提出治疗向的未来研究方向.
主要方法:
- 文献综述综合了在DWH中关于cGAS-STING信号的现有研究.
- 在糖尿病伤口模型中分析了表明cGAS-STING通路上调的研究.
- 检查关于cGAS-STING抑制对DWH的影响的临床前数据.
主要成果:
- 有证据表明,糖尿病伤口中cGAS-STING通路的升调.
- 这种途径的激活有助于增加炎症,细胞衰老和代谢中断,共同影响愈合.
- 在临床前模型中,cGAS-STING的部分制药抑制已经显示出减少炎症和增强DWH的潜力.
结论:
- cGAS-STING驱动的炎症是缺陷DWH的一个关键因素.
- 需要进一步研究,以了解cGAS-STING,内质网膜应激和DWH中的金属离子信号之间的相互作用.
- 调节cGAS-STING通路为改善DWH结果提供了一个有希望的治疗策略.
相关概念视频
G Protein-coupled Receptors
12.1K
G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
12.1K
Glucagon-like Receptor Agonists
323
Incretins include glucagon-like peptide-1 (GLP-1) and glucose-dependent insulinotropic polypeptide (GIP), which stimulate insulin secretion post-meals. In type 2 diabetes, GIP's efficacy is reduced, making GLP-1 a viable drug target. GIP originates from preproGIP.
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
GLP-1, when administered in high doses intravenously, triggers insulin secretion, inhibits glucagon release, slows gastric emptying, reduces food intake, and restores normal insulin secretion. However, its rapid inactivation by...
323
Diabetes: Management and Pharmacotherapy
285
The therapy for diabetes aims to alleviate hyperglycemia-related symptoms, prevent acute metabolic decompensation, and reduce chronic end-organ complications. Glycemic control is evaluated through short-term (self-monitoring, continuous glucose monitoring) and long-term (A1c, fructosamine) metrics, enabling near real-time tracking of blood glucose levels and reflecting glycemic control over specific time frames.
Insulin remains the cornerstone of treatment for most patients with type 1 and many...
Insulin remains the cornerstone of treatment for most patients with type 1 and many...
285
cAMP-dependent Protein Kinase Pathways
6.4K
Cyclic Adenosine Monophosphate (cAMP) is an essential second messenger that activates protein kinase A (PKA) and regulates various biological processes. A single epinephrine molecule binds to GPCR and activates several heterotrimeric G proteins, each stimulating multiple adenylyl cyclase, amplifying the signal, and synthesizing large numbers of cAMP molecules. Small changes in cAMP concentration affect PKA activity. The binding of four cAMP molecules induces a conformational change in PKA,...
6.4K
Transducer Mechanism: Enzyme-Linked Receptors
2.5K
Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Major types that are helpful drug targets include:
2.5K
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


