相关实验视频

Updated: Jan 13, 2026

Measuring the Rate of Lipolysis in Ex Vivo Murine Adipose Tissue and Primary Preadipocytes Differentiated In Vitro

Measuring the Rate of Lipolysis in Ex Vivo Murine Adipose Tissue and Primary Preadipocytes Differentiated In Vitro

Published on: March 17, 2023

cAMP-PKA/EPAC信号通路:对脂质稳态的关键调节者

Caixia Chen^1,2, Hui Gao³, Qi Tian¹

¹College of Life Sciences, Inner Mongolia Agricultural University, Inner Mongolia Key Laboratory of Biomanufacturing Techenology, Inner Mongolia Autonomous Region Endemic Livestock Biotechnology Innovation Team, Hohhot, China.

|January 8, 2026

概括

本综述综合了脂肪组织中的cAMP-PKA/EPAC信号网络,揭示了它与微环境的相互作用,以调节新陈代谢. 针对这些途径为肥胖等代谢疾病提供了潜在的治疗策略.

科学领域:

*脂肪组织生物学和代谢调节.
* 参与脂质代谢的细胞信号通路.

背景情况:

*脂肪组织的稳态依赖于受微环境影响的协调性脂生成,脂解和脂肪细胞分化.
*已知cAMP-蛋白激酶A (PKA) 途径调节脂质代谢,但其与脂肪微环境的相互作用,特别是肥胖症的相互作用尚不清楚.
* Epac (直接被cAMP激活的交换蛋白) 是一种cAMP效应因子,在免疫和心血管系统中发挥作用,但其在脂肪代谢中的功能尚未得到研究.

研究的目的:

* 为脂肪组织中cAMP-PKA/Epac双信号网络提供全面的合成.
* 阐明这种信号网络与脂肪微环境之间的相互作用.
*通过信号与微环境相互作用的透视来建立理解代谢障碍的框架.

主要方法:

*全面的文献综述和现有关于脂肪组织中PKA和Epac信号传导的研究的综合.
*分析cAMP信号通路和脂肪组织微环境组件之间的相互调节.
*整合发现,提出一种新的代谢疾病病理生理学的框架.

主要成果:

*cAMP-PKA/Epac信号网络在调节脂肪组织平衡和脂质代谢方面发挥着至关重要的作用.
* 这个网络与脂肪微环境元素 (如免疫细胞和血管内皮) 相互相互作用.
* 提出了一个新的"信号-微环境-系统代谢"框架来解释代谢障碍.

结论:

*双重cAMP-PKA/Epac信号网络对于脂肪组织功能及其与微环境的相互作用至关重要.
* 了解这个网络为肥胖,糖尿病和肝硬化病的病理生理学提供了新的见解.
* PKA/Epac通路的药理向是恢复脂肪组织平衡的有希望的治疗途径.

关键词:

循环腺单酸盐 (cAMP) 是一种脂肪的微环境是一个微环境.交换由cAMP (EPAC) 直接激活的蛋白质.同源静止是同源静止相关的疾病.蛋白质激酶a (PKA) 的作用.

更多相关视频

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy

Exploring the Regulation of Lipid Droplet Catabolism through Lipophagy

Published on: January 31, 2025

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis

Mechanism of Regulation of Adipocyte Numbers in Adult Organisms Through Differentiation and Apoptosis Homeostasis

Published on: June 3, 2016

相关概念视频

cAMP-dependent Protein Kinase Pathways

cAMP-dependent Protein Kinase Pathways

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,...

Interactions Between Signaling Pathways

Interactions Between Signaling Pathways

Signaling cascades usually lack linearity. Multiple pathways interact and regulate one another, allowing cells to integrate and respond to diverse environmental stimuli.
Convergence and divergence, and cross-talk between signaling pathways
Two distinct signaling pathways can converge on a single functional unit, which may either be a single protein or a complex of proteins. The response is either functionally distinct or synergistic between the two pathways but different from the response...

Amplifying Signals via Enzymatic Cascade

Amplifying Signals via Enzymatic Cascade

When a ligand binds to a cell-surface receptor, the receptor's intracellular domain changes shape, which may either activate its enzyme function or allow its binding to other molecules. The initial signal is amplified by most signal transduction pathways. This means that a single ligand molecule can activate multiple molecules of a downstream target. Proteins that relay a signal are most commonly phosphorylated at one or more sites, activating or inactivating the protein. Kinases catalyze...

PI3K/mTOR/AKT Signaling Pathway

PI3K/mTOR/AKT Signaling Pathway

The mammalian target of rapamycin (mTOR) is a serine/threonine kinase that regulates growth, proliferation, and cell survival in response to hormones, growth factors, or nutrient availability. This kinase exists in two structurally and functionally distinct forms: mTOR complex 1 (mTORC1) and mTOR complex 2 (mTORC2). The first form (mTORC1) is composed of a rapamycin-sensitive Raptor and proline-rich Akt substrate, PRAS40. In contrast, mTORC2 consists of a...

Global Regulatory Systems

Global Regulatory Systems

Global regulatory systems in bacteria enable rapid and coordinated responses to environmental changes by integrating sensory inputs with gene expression, ensuring efficient adaptation to fluctuating conditions. Key global regulatory mechanisms include regulons, two-component systems, sigma factors, and secondary messengers.Regulons and Global RegulatorsA regulon is a collection of genes and operons controlled by a common global regulator. These regulators enable bacteria to prioritize resource...

The JAK-STAT Signaling Pathway

The JAK-STAT Signaling Pathway

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...