脂肪組織と全身代謝を結びつける脂質ホルモンであるリポキンの識別
Haiming Cao1, Kristin Gerhold, Jared R Mayers
1Department of Genetics and Complex Diseases, Harvard School of Public Health, Boston, MA 02115, USA.
Cell
|September 23, 2008
まとめ
脂肪組織の脂質代謝の変化は,全身のインスリンとグルコースの調節に影響します. 研究者らは,パルミトエレート酸を,インスリン感受性を改善し,肝臓の脂肪を減らす脂肪からの重要なリポキンとして特定しました.
科学分野:
- メタボリック研究.
- エンドクリノロジー エンドクリノロジー
- リピドミクスは,リピドミクスのことです.
背景:
- 組織における脂質代謝の調節不良は,全身的なインスリンとグルコースの恒常性を破壊する.
- 脂肪組織は,代謝シグナル伝達において重要な役割を果たします.
- 脂肪組織の役割を理解することは,代謝の健康の鍵です.
研究 の 目的:
- 脂質シグナルによる脂肪組織の代謝変化と全身代謝の関連性を調査する.
- 臓器間の伝達に関与する特定の脂質媒介体を特定する.
- 代謝調節における脂肪組織脂質チャペロン (aP2とmal1) の機能を調査する.
主な方法:
- マウスにおける量的な脂質学分析.
- 脂肪組織の脂質チャペロンであるaP2とmal1.1が不足している遺伝子組み換えマウスを利用した.
- 信号分子を識別するための全身性脂質プロファイリング.
主要な成果:
- aP2とmal1が欠乏したマウスは,脂肪組織における新たな脂質生成が増加し,食事による脂質過負荷に対する抵抗性を発揮した.
- パルミトエレート (C16:1n7) は,脂肪組織由来リポキンとして特定されました.
- パルミトエレートは,筋肉におけるインスリン作用を著しく強化し,肝臓ステアトーシスを減少させた.
結論:
- 脂肪組織は,脂質媒介の内分泌ネットワークを通じて,遠くにある臓器と通信します.
- パルミトエレートなどのリポキンは,全身代謝ホメオスタシスの重要な調節体である.
- 脂肪組織に由来するリポキンを標的にすることは,代謝障害の治療戦略を提供することができる.
関連する概念動画
Lipid Catabolism
466
Triglycerides serve as crucial long-term energy storage molecules in microorganisms, providing a dense source of metabolic energy. Their breakdown is mediated by lipases, which hydrolyze triglycerides into glycerol and free fatty acids. Each of these components follows distinct metabolic pathways, ultimately contributing to ATP synthesis and cellular energy homeostasis.Glycerol MetabolismGlycerol, released from triglyceride hydrolysis, is phosphorylated by glycerol kinase to form...
466
Overview of Lipid Metabolism
3.6K
Lipid metabolism is a crucial process in the human body that involves the synthesis and degradation of lipids. This process is essential for energy production, cell membrane formation, and hormone production, among other functions.
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
Lipolysis: The Breakdown of Lipids:
Lipolysis is the process of breaking down lipids, particularly triglycerides, into glycerol and fatty acids. This process typically occurs in the adipose tissue and is triggered by various hormones, including glucagon and...
3.6K
Lipid-derived Compounds in the Human Body
5.7K
Fats and lipids are crucial components in the human body. Some lipid-derived compounds, such as fat-soluble vitamins, eicosanoids, lipoproteins, and glycolipids, also play unique roles to support various biological processes .
Fat-soluble Vitamins
Fat-soluble vitamins, including vitamins A, D, E, and K, are required in minimal quantities, but their deficiencies can lead to severely abnormal physiological conditions. For example, vitamin A deficiency can cause night blindness, dry skin,...
Fat-soluble Vitamins
Fat-soluble vitamins, including vitamins A, D, E, and K, are required in minimal quantities, but their deficiencies can lead to severely abnormal physiological conditions. For example, vitamin A deficiency can cause night blindness, dry skin,...
5.7K
Cholesterol: Significance and Regulation
978
Although not a source of energy, cholesterol plays a significant role as a foundational structure for bile salts, steroid hormones, and vitamin D, as well as being a crucial component of plasma membranes. Approximately 15% of blood cholesterol is derived from our diet, with the remainder synthesized from acetyl CoA by the liver and intestines. Cholesterol is eliminated from the body through its conversion into bile salts, which are eventually discarded in the feces.
Considering cholesterol and...
Considering cholesterol and...
978


