在聚二氧化碳核酸的存在下,阐明A2A腺酸受体的相互作用动力学
Wonseok Lee1, Ahrum Son2, Jaeho Ji3
1Department of Bio-AI Convergence, Chungnam National University, Daejeon 34134, Republic of Korea.
Journal of proteome research
|July 9, 2025
概括
聚二氧化碳核酸 (PDRN) 激活了腺氨酸A2A受体 (ADORA2A),影响了用于组织再生的蛋白质表达. 这项研究揭示了PDRNN.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 再生医学是一种再生医学.
背景情况:
- 聚二氧化碳核酸 (PDRN) 是一种类似哺乳动物DNA的物质,以组织再生而闻名.
- PDRN的再生作用与腺氨酸A2A受体 (ADORA2A) 激活有关.
- 之前的研究表明,PDRN诱导的ADORA2A激活可提高血管生成和生长因子的调节.
研究的目的:
- 调查与PDRN.的ADORA2A激活相关的蛋白质动态.
- 为了确定参与ADORA2A信号传递的新型蛋白质网络和相互作用.
- 通过ADORA2A.探索PDRN在神经元分化中的潜在作用.
主要方法:
- 在人静脉内皮细胞 (HUVECs) 上进行选择反应监测质谱 (SRM-MS).
- 基因本体学 (GO) 分析和物理网络分析.
- 对于蛋白质相互作用部位的AlphaFold多分子预测.
主要成果:
- SRM-MS确定了374种蛋白质和193种,其表达水平发生了变化.
- 网络分析揭示了与ADORA2A和神经元分化相关的新型蛋白质相互作用.
- 预测了ADORA2A和神经营养受体氨酸激酶1 (NTRK1) 之间的五个相互作用点.
结论:
- PDRN对ADORA2A信号传递的影响涉及一个复杂的蛋白质网络.
- 这项研究强调了PDRN在促进神经元分化方面的潜在机制.
- 这些发现为进一步研究PDRN的治疗应用提供了基础.
更多相关视频
相关概念视频
Allosteric Proteins-ATCase
5.9K
Binding sites linkages can regulate a protein's function. For example, enzyme activity is often regulated through a feedback mechanism where the end product of the biochemical process serves as an inhibitor.
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
Aspartate transcarbamoylase (ATCase) is a cytosolic enzyme that catalyzes the condensation of L-aspartate and carbamoyl phosphate to N-carbamoyl-L-aspartate. This reaction is the first step in pyrimidine biosynthesis. UTP and CTP, the end products of the pyrimidine synthesis...
5.9K
Ligand Binding and Linkage
4.9K
Allosteric proteins have more than one ligand binding site; the binding of a ligand to any of these sites influences the binding of ligands to the other sites. When a protein is allosteric, its binding sites are called coupled or linked. In the case of enzymes, the site that binds to the substrate is known as the active site and the other site is known as the regulatory site. When a ligand binds to the regulatory site, this leads to conformational changes in the protein that can influence...
4.9K
Adrenergic Receptors: ɑ Subtype
2.0K
Adrenoceptors are classified into α and ꞵ classes based on their potencies to catecholamine agonists. α-adrenoceptors show the following order of catecholamine potency:
Adrenaline ≥ Noradrenaline >> Isoprenaline
α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase...
Adrenaline ≥ Noradrenaline >> Isoprenaline
α-adrenoceptors are further divided into α1 and α2-adrenoceptors.
α1-Adrenoceptors: These receptors are located postsynaptically on the effector organs and cause constriction of smooth muscle mediated by activation of phospholipase...
2.0K
The Two-State Receptor Model
2.4K
The two-state receptor model explains a drug's interaction with receptors, such as G protein-coupled receptors and ligand-gated ion channels, to induce or inhibit a biological response. When no natural ligands are present, a receptor exists in an equilibrium of inactive (Ri) and active (Ra) conformations. The inactive form does not produce a response, while the active form generates a basal effect known as constitutive activity.
The binding affinity of a drug determines its interaction with...
The binding affinity of a drug determines its interaction with...
2.4K
GPCRs Regulate Adenylyl Cylase Activity
6.0K
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...
6.0K
RNA Polymerase II Accessory Proteins
9.5K
Proteins that regulate transcription can do so either via direct contact with RNA Polymerase or through indirect interactions facilitated by adaptors, mediators, histone-modifying proteins, and nucleosome remodelers. Direct interactions to activate transcription is seen in bacteria as well as in some eukaryotic genes. In these cases, upstream activation sequences are adjacent to the promoters, and the activator proteins interact directly with the transcriptional machinery. For example, in...
9.5K


