相关实验视频
Updated: Jan 30, 2026
01:26
Coronary Artery Disease IV: Preventive Measures
Published on: June 19, 2025
622
通过过氧化酶催化近距离标记对GPCR信号进行多维追踪
Jaeho Paek1, Marian Kalocsay2, Dean P Staus3
1Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.
Cell
|April 8, 2017
概括
我们开发了GPCR-APEX, 这是一种实时跟踪G蛋白结合受体 (GPCR) 信号的新方法. 这项技术揭示了动态受体相互作用,并确定了GPCR功能的新调节剂.
科学领域:
- 生物化学
- 细胞生物学
- 药理学
背景情况:
- G蛋白结合受体 (GPCR) 对许多生理过程至关重要.
- 目前用于研究GPCR信号的方法在吞吐量,蛋白质修饰和时间分辨率方面存在局限性.
研究的目的:
- 开发一种定量,时间解决的方法来测量活细胞中的GPCR激素反应.
- 研究GPCR与G蛋白在激活和内化过程中的动态相互作用.
主要方法:
- 使用过氧化酶催化近距离标记与同位素标记和质谱学.
- 开发了一种称为"GPCR-APEX"的技术,用于定量,时间解析的GPCR信号分析.
- 追踪 angiotensin II 1 型受体和β2 上腺受体的激活和内化.
主要成果:
- 证明GPCR在激活之前与G蛋白共同定位.
- 显示激活的受体在内化时被从G蛋白中隔离.
- 在两个研究受体之间观察到差异化的内化动力学.
- 确定LMBRD2作为β2上腺体信号的潜在调节者.
结论:
- GPCR-APEX提供了一个强大的工具,用于动态分析GPCR功能.
- 这项研究强调了GPCR-G蛋白相互作用和受体贩运的动态性质.
- 确定了GPCR信号的潜在新治疗标和监管机制.
相关概念视频
Coronary Artery Disease II: Pathophysiology
409
Coronary Artery Disease (CAD) originates from a series of events that impair the function of coronary arteries, the blood vessels responsible for delivering oxygen-rich blood to the heart muscle. The pathophysiology of CAD is closely linked to atherosclerosis, a chronic inflammatory and lipid-driven condition affecting the vascular endothelium.1. Endothelial DamageThe process begins with damage to the vascular endothelium, which serves as a protective barrier between the blood and the vessel...
409
Coronary Artery Disease I: Introduction
958
Coronary Artery Disease (CAD): An Overview with Scientific InsightsCoronary Artery Disease (CAD), often referred to as C-A-D, is a prevalent blood vessel disorder classified under the broader category of atherosclerosis. Atherosclerosis is a pathological process characterized by the hardening and narrowing of arteries due to the accumulation of atherosclerotic plaques. These plaques are composed of cholesterol, fatty substances, inflammatory cells, calcium, and fibrin, reducing blood flow to...
958
Coronary Artery Disease IV: Preventive Measures
622
Effective preventive measures for coronary artery disease (CAD) focus on controlling modifiable risk factors, including cholesterol abnormalities and lifestyle changes.Cholesterol ManagementFirst, the Mediterranean diet and the American Heart Association advocate for maintaining low-density lipoprotein (LDL) cholesterol levels below 100 mg/dL, with a more stringent recommendation of below 70 mg/dL for individuals at high risk. LDL cholesterol, often termed "bad cholesterol," can lead to the...
622
Preventive Healthcare Services
1.9K
Preventive healthcare services keep people healthy via frequent check-ups, screening, and counseling. They primarily aid in disease prevention rather than treating an acute or chronic illness. Preventive treatment also keeps individuals productive and energetic, allowing them to work well into their retirement years. Examples of preventive care services include:
1.9K
Factors Affecting the Risk of Infection
13.3K
The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases.
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin...
13.3K
Factors Affecting Protein-Drug Binding: Protein-Related Factors
538
Drug binding to proteins is a key aspect of pharmacokinetics and can influence a drug's distribution, absorption, and elimination in the body. Several factors, including the drug's physiochemical properties, protein concentration, disease states, and the number of binding sites on the protein, influence this process.
The physicochemical properties of a drug play a significant role in its ability to bind to proteins. Lipophilic drugs, which dissolve in fats, oils, and lipids, can be...
The physicochemical properties of a drug play a significant role in its ability to bind to proteins. Lipophilic drugs, which dissolve in fats, oils, and lipids, can be...
538