循环核酸信号在免疫中的药理潜力
Eirene Marie Q Ednacot1, Ali Nabhani2, David M Dinh2
1Department of Molecular Biology and Biochemistry, School of Biological Sciences, University of California Irvine, Irvine, CA 92697, USA; Department of Pharmaceutical Sciences, School of Pharmacy and Pharmaceutical Sciences, University of California Irvine, Irvine, CA 92697, USA.
Pharmacology & therapeutics
|April 28, 2024
概括
像cAMP和cGMP这样的循环核酸对于免疫信号传递至关重要. 新的研究突出了循环二核酸在先天免疫中的作用,为抗感染和抗癌的新型免疫疗法提供了潜力.
科学领域:
- 免疫学和药理学
- 分子生物学分子生物学
- 细胞信号传递 细胞信号传递
背景情况:
- 循环核酸 (cAMP,cGMP) 是关键的第二信使,调节各种生理过程,包括免疫反应.
- 这些分子协调免疫平衡和对病原体的防御.
- 调节循环核酸通路提供了治疗机会,但需要细胞类型的特异性.
研究的目的:
- 综合审查循环核酸信号在免疫中的药理潜力.
- 为突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出突出
- 探索循环二核酸在传染病和癌症中的治疗影响.
主要方法:
- 在免疫环境中循环核酸信号的文献综述.
- 对循环二核酸及其在天生的免疫力中的作用的最新发现进行分析.
- 检查针对循环核酸通路的治疗策略.
主要成果:
- 循环核酸在免疫细胞功能和调节中起着复杂的作用.
- 专门的循环核酸,包括循环二核酸 (例如,2'3'-cGAMP),是天生的免疫的关键,特别是通过cGAS-STING通路.
- 参与抗病毒反应的细菌循环核酸是抗菌疗法的新目标.
结论:
- 循环核酸信号通路为免疫药理学干预提供了显著的潜力.
- 向循环二核酸为开发针对癌症和传染病的免疫疗法提供了有希望的途径.
- 了解新型细菌循环核酸对于未来的抗菌药物开发至关重要.
相关概念视频
01:24Intracellular Signaling Cascades
46.8K
Once a ligand binds to a receptor, the signal is transmitted through the membrane and into the cytoplasm. The continuation of a signal in this manner is called signal transduction. Signal transduction only occurs with cell-surface receptors, which cannot interact with most components of the cell, such as DNA. Only internal receptors can interact directly with DNA in the nucleus to initiate protein synthesis. When a ligand binds to its receptor, conformational changes occur that affect the...
46.8K
01:15Amplifying Signals via Second Messengers
6.9K
Many receptor binding ligands are hydrophilic; they do not cross the cell membrane but bind to cell-surface receptors. Thus, their message must be relayed by second messengers present in the cell cytoplasm. There are several second messenger pathways, each with its own way of relaying information. For example, the G protein-coupled receptors can activate both phosphoinositol and cyclic AMP (cAMP) second messenger pathways. The phosphoinositol pathway is active when the receptor induces...
6.9K
01:16Calmodulin-dependent Signaling
5.1K
Calmodulin (CaM) is a calcium-binding protein in eukaryotes that controls various calcium-regulated cellular processes. It has four calcium-binding sites that bind calcium to form the calcium-calmodulin ( Ca2+-CaM) complex. GPCR stimulation increases the calcium levels in the cells that bind to CaM and induces a conformational change.
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
The Ca2+-CaM complex does not have enzymatic activity by itself. Instead, the complex binds downstream target proteins, including membrane proteins or enzymes,...
5.1K
01:09GPCRs Regulate Adenylyl Cylase Activity
5.5K
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...
5.5K
01:26Signal Transduction: Overview
8.5K
Cells respond to many types of information, often through receptor proteins positioned on the membrane. They respond to chemical signals, such as hormones, neurotransmitters, and other signaling molecules, initiating a series of molecular reactions to produce an appropriate response. This is called signal transduction. Cells also coordinate different responses elicited by the same signaling molecule via mediators, allowing molecular cross-talk.
Typically, signal transduction involves three...
Typically, signal transduction involves three...
8.5K
01:11IP3/DAG Signaling Pathway
12.0K
Membrane lipids such as phosphatidylinositol (PI) are precursors for several membrane-bound and soluble second messengers. Specific kinases phosphorylate PI and produce phosphorylated inositol phospholipids. One such inositol phospholipids are the phosphatidylinositol-4,5 bisphosphate [PI(4,5)P2], present in the inner half of the lipid bilayer. Upon ligand binding, GPCR stimulates Gq proteins to turn on phospholipase Cꞵ. Activated phospholipase Cꞵ cleaves PI(4,5)P2 and...
12.0K