在椎间盘退化中,A2AR通过PKA/NF-κB信号通路调节炎症
Weijun Liu1, Qingbo Li2, Weizhi Fang2
1Department of Spine Surgery, Wuhan Fourth Hospital, Hanzheng Street, 473#, QiaoKou District, Wuhan, 430033, China. wuhanspine@163.com.
European journal of medical research
|August 27, 2024
概括
激活腺氨酸A2A受体 (A2AR) 通过减少炎症和退化,可以防止椎间盘退化 (IDD). 这表明A2AR是IDD和慢性腰部疼痛的潜在治疗标.
科学领域:
- 生物医学科学 生物医学科学
- 药理学 药理学是指药理学的学科.
- 再生医学是一种再生医学.
背景情况:
- 椎间盘退化 (IDD) 涉及炎症损伤和核脉 (NP) 亡,导致慢性腰部疼痛.
- 腺A2A受体 (A2AR) 以其抗炎和止痛特性而闻名,但其在IDD中的作用尚不清楚.
研究的目的:
- 调查腺氨酸A2A受体 (A2AR) 在椎间盘退化 (IDD) 中的作用.
- 为了澄清A2AR在IDD中的潜在治疗机制.
主要方法:
- 用IL-1β和针在老鼠身上建立了IDD模型.
- 使用A2AR激活剂 (CGS-21680) 和对抗剂 (SCH442416) 来评估治疗效果.
- 组织学检查,西部涂抹和RT-PCR评估了A2AR和cAMP/PKA通路之间的关联.
主要成果:
- 由IL-1β诱导的IDD上调了炎症因素,降低了MMP3和Col-II,并激活了NF-κB通路.
- 通过增加A2AR活性,激活cAMP/PKA通路,并通过NF-κB抑制减少炎症标志物,通过CGS-21680保护磁盘激活A2AR.
- 通过SCH442416的A2AR对抗加速了IDD进展,与降低的cAMP和PKA水平相关.
结论:
- A2AR激活减轻了IDD中的炎症反应和降解.
- A2AR代表了对椎间盘变性的一种有前途的新疗法策略.
相关概念视频
NF-κB-dependent Signaling Pathway
7.4K
The transcription factor NF-κB was discovered in 1986 in the lab of Nobel laureate Professor David Baltimore, for its interaction with the immunoglobulin light chain enhancer in B-cells. After more than three decades of study, it is now evident that NF-κB regulates the expression of over 100 genes. Most of these genes play an essential role in the innate and adaptive immune responses as well as the inflammatory responses of animals.
NF-κB-dependent Signaling Mechanism
The...
NF-κB-dependent Signaling Mechanism
The...
7.4K
Inflammatory Response
1.9K
An inflammatory response is a localized, nonspecific immune reaction that occurs when a tissue is injured. It is characterized by redness, swelling, heat, and pain, which are commonly called the cardinal signs and symptoms of inflammation. Inflammation can sometimes result in a loss of function.
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
Inflammation can be triggered by various stimuli, such as impact, abrasion, chemical irritation, infections, and extreme hot or cold temperatures. These can damage cells and connective tissue fibers,...
1.9K
The JAK-STAT Signaling Pathway
8.7K
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...
8.7K
Nociception
27.8K
Nociception—the ability to feel pain—is essential for an organism’s survival and overall well-being. Noxious stimuli such as piercing pain from a sharp object, heat from an open flame, or contact with corrosive chemicals are first detected by sensory receptors, called nociceptors, located on nerve endings. Nociceptors express ion channels that convert noxious stimuli into electrical signals. When these signals reach the brain via sensory neurons, they are perceived as pain.
27.8K
T Cell Types and Functions
963
When T cells with CD4 markers are activated, they give rise to two types of effector cells: helper T cells and regulatory T cells. Meanwhile, T cells with CD8 markers differentiate into effector cytotoxic T cells. The differentiation of CD4 T cells into helper T cell subsets, such as Th1, Th2, and Th17 cells, is dependent on the antigen type, antigen-presenting cell, and regulatory cytokines.
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
Th1 cells stimulate dendritic cells to express necessary co-stimulatory molecules on their surfaces for...
963
Inflammation
53.2K
Overview
53.2K


