MTCH2通过调节脂肪组织中自的过程来抑制发热
Xin-Yuan Zhao1, Ben-Chi Zhao1, Hui-Lin Li1
1Laboratory of Metabolism and Aging, School of Pharmaceutical Sciences (Shenzhen), Shenzhen Campus of Sun Yat-sen University, Shenzhen, 518107, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 7, 2025
概括
线粒体载体同位素2 (MTCH2) 负面调节能量消耗. 在小鼠中减少MTCH2通过促进脂肪组织热生成和改善代谢健康来对抗肥胖,从而揭示了一个新的治疗点.
科学领域:
- 代谢性疾病研究研究.
- 脂肪组织生物学 脂肪组织生物学
- 肥胖的机制 肥胖的机制
背景情况:
- 通过解蛋白1 (UCP1) 调节的脂肪组织热生成对于能源消耗和肥胖管理至关重要.
- 在肥胖中抑制热生成的机制仍然不完全理解.
- 线粒体载体同位素2 (MTCH2) 是一种肥胖易感基因,在能量恒温中没有明确的作用.
研究的目的:
- 研究MTCH2在调节能量恒温和脂肪组织热生成中的作用.
- 确定MTCH2作为肥胖和相关代谢障碍的潜在治疗标.
主要方法:
- 使用了基因操纵 (在小鼠中脂肪特异性MTCH2耗尽),高脂肪饮食 (HFD) 模型和综合多奥米克分析 (RNA测序和蛋白质组学) 的组合.
- 评估了代谢参数,热生成标记 (UCP1),线粒体生物发生和棕色脂肪组织 (BAT) 和皮下白色脂肪组织 (scWAT) 的脂解.
- 研究了将MTCH2与热生成调节联系起来的分子机制,重点研究了自和Bcl-2相互作用.
主要成果:
- 在小鼠中,脂肪特异性MTCH2枯竭给予了对HFD诱导的肥胖和代谢功能障碍的保护.
- 由于MTCH2缺乏,通过刺激BAT热生成和促进scWAT色,增加了能源消耗.
- 关键发现包括上调的UCP1,线粒体生物发生的增加,增强的脂解,以及MTCH2通过Bcl-2-依赖途径作为自的负调节者的作用.
结论:
- MTCH2 作为热生成和能量恒温的关键抑制剂.
- MTCH2通过Bcl-2-依赖机制负面调节自,影响脂肪组织功能.
- MTCH2代表了一种新的治疗目标,用于提高能量消耗,治疗肥胖和代谢疾病.
相关概念视频
mTOR Signaling and Cancer Progression
3.7K
The mammalian target of rapamycin or mTOR protein was discovered in 1994 due to its direct interaction with rapamycin. The protein gets its name from a yeast homolog called TOR. The mTOR protein complex in mammalian cells plays a major role in balancing anabolic processes such as the synthesis of proteins, lipids, and nucleotides and catabolic processes, such as autophagy in response to environmental cues, such as availability of nutrients and growth factors.
The mTOR pathway or the...
The mTOR pathway or the...
3.7K
PI3K/mTOR/AKT Signaling Pathway
3.4K
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...
3.4K
Regulation of Food Intake
172
Short-term regulation of food intake primarily involves neural signals from the gastrointestinal (GI) tract, blood nutrient levels, and GI tract hormones. Communication between the gut and brain via vagal nerve fibers plays a significant role in evaluating the contents of the gut. Clinical studies have shown that protein ingestion produces a more prolonged response in these nerve fibers compared to an equivalent amount of glucose. Additionally, the activation of stretch receptors caused by GI...
172
Autophagy
4.1K
Autophagy is a self-digesting process by which a cell protects itself from threats both within and outside the cell, ranging from abnormal proteins to invading bacteria. In this process, obsolete components of the cell and invading microbes are degraded by hydrolytic enzymes active in an acidic environment of the lysosomal lumen.
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
An autophagic pathway consists of a series of signaling events activated in response to diverse stress and physiological conditions such as food deprivation,...
4.1K
Abnormal Proliferation
4.4K
Under normal conditions, most adult cells remain in a non-proliferative state unless stimulated by internal or external factors to replace lost cells. Abnormal cell proliferation is a condition in which the cell's growth exceeds and is uncoordinated with normal cells. In such situations, cell division persists in the same excessive manner even after cessation of the stimuli, leading to persistent tumors. The tumor arises from the damaged cells that replicate to pass the damage to the...
4.4K
Receptor Downregulation in MVBs
2.0K
Multivesicular bodies (MVBs) are mature endosomes that sort ubiquitinated proteins and then fuse with lysosomes to degrade the sorted proteins. Epidermal growth factor (EGF) and its receptor (EGFR) form a complex that can be internalized through endocytosis, sorted into an MVB, and later degraded.
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
The EGFR can initiate signaling pathways that lead to cell proliferation, migration, and differentiation. Overexpression of EGFR stimulates cells to proliferate. Excessive EGFR...
2.0K


