环氧乙酸 (EETs):一种新的类型的第二信使的荷尔蒙功能反应
Jorge H Capdevila1, John R Falck2, Adeniyi Michael Adebesin2
1Department of Medicine, Vanderbilt University School of Medicine, Nashville, TN 37232, USA.
Prostaglandins & other lipid mediators
|January 31, 2025
概括
环氧乙酸 (EETs) 是细胞染色体P450的阿拉基酸代谢产物. 本综述探讨了它们在荷尔蒙信号传递中的作用,将它们与ERK1/2和Akt激酶等细胞内媒介体联系起来.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 内分泌学 在内分泌学.
背景情况:
- 环氧乙酸 (EETs) 是通过细胞染色体P450酶的酸代谢产生的,具有已知的心血管和效应.
- 在荷尔蒙信号通路中EETs的精确机制和作用仍然不完全理解.
- 现有的研究重点是EETs的自和副功能,需要进一步研究它们的细胞内信号传递作用.
研究的目的:
- 审查目前关于EETs参与荷尔蒙跨膜信号传导的证据.
- 阐明ETs作为激素激活信号级联中的细胞内介质的作用.
- 建议将EET纳入由特定激素受体相互作用激活的信号分子的目录.
主要方法:
- 对研究EET和激素信号的研究的文献综述.
- 对研究的分析,研究了ETT对ERK1/2和Akt激酶的激活.
- 检查涉及表皮生长因子 (EGF),血管内皮生长因子 (VEGF) 和胰岛素信号的研究数据.
主要成果:
- EETs涉及由荷尔蒙刺激启动的跨膜信号转导通路.
- 有证据表明,EETs有助于激活关键的细胞内激酶,包括ERK1/2和Akt.
- 涉及EGF,VEGF和胰岛素受体的研究为EET在这些信号事件中的作用提供了基础.
结论:
- EETs参与荷尔蒙跨膜信号转导通路.
- EETs作为细胞内介质,影响ERK1/2和Akt酶的激活.
- 应将EET视为选择激素受体相互作用的信号机制的组成部分.
相关概念视频
01:26Secondary Messengers in Hormone Action
2.0K
Water-soluble hormones cannot cross the plasma membrane, so they rely on protein receptors that span the membrane to trigger intracellular signaling pathways. These pathways then activate second messengers inside the cell, including cAMP or calcium ions.
Many hormones bind to transmembrane G protein-coupled receptors that connect to regulatory G proteins. These G proteins can then activate enzymes such as adenylyl cyclase or phospholipase C. Adenylyl cyclase converts ATP to cAMP, activating...
Many hormones bind to transmembrane G protein-coupled receptors that connect to regulatory G proteins. These G proteins can then activate enzymes such as adenylyl cyclase or phospholipase C. Adenylyl cyclase converts ATP to cAMP, activating...
2.0K
01:12What are Second Messengers?
82.2K
Because many receptor binding ligands are hydrophilic, they do not cross the cell membrane and thus their message must be relayed to a second messenger on the inside. There are several second messenger pathways, each with their own way of relaying information. G-protein coupled receptors can activate both phosphoinositol and cyclic AMP (cAMP) second messenger pathways. The phosphoinositol path is active when the receptor induces phospholipase C to hydrolyze the phospholipid,...
82.2K
01:15Amplifying Signals via Second Messengers
6.7K
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...
6.7K
01:21Types of Hormones
2.8K
Hormones are classified into four main groups: steroids, eicosanoids, amino acid-based derivatives, and peptide hormones.
Steroids and eicosanoids fall under the category of lipid-soluble hormones. Steroids are derived from cholesterol and feature four interconnected carbon rings with variable side chains. Notable examples include estradiol from ovaries and testosterone from testes, exemplifying the critical roles of these lipid-soluble hormones in reproductive physiology. Eicosanoids, derived...
Steroids and eicosanoids fall under the category of lipid-soluble hormones. Steroids are derived from cholesterol and feature four interconnected carbon rings with variable side chains. Notable examples include estradiol from ovaries and testosterone from testes, exemplifying the critical roles of these lipid-soluble hormones in reproductive physiology. Eicosanoids, derived...
2.8K
01:22Target Cell Response to Hormones
2.9K
Hormones intricately bind to receptors on the surface or within target cells, initiating a cascade of cellular responses.
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...
Notably, the cellular response can be regulated by altering the number of receptors expressed in the cell. For example, prolonged exposure to elevated hormone levels results in a gradual decline or down-regulation in the number of receptors for that specific hormone on the cell surface. Conversely, in response to low hormone levels, cells may use up-regulation, producing an...
2.9K
01:08Chemical Signaling in the Endocrine System
3.0K
A signaling cascade is a series of events that facilitates the transmission of information within or between cells, culminating in a targeted response in the recipient cell. As chemical messengers, hormones are pivotal in initiating and modulating these intricate signaling cascades based on their solubility.
Lipid-soluble hormones, such as steroid hormones, demonstrate an intracellular action. These hormones traverse cell membranes due to their lipid nature. Once inside the target cell, they...
Lipid-soluble hormones, such as steroid hormones, demonstrate an intracellular action. These hormones traverse cell membranes due to their lipid nature. Once inside the target cell, they...
3.0K