交感性神経脂肪結合は,レプチン主導の脂解を媒介する
Wenwen Zeng1, Roksana M Pirzgalska2, Mafalda M A Pereira2
1Laboratory of Molecular Genetics, The Rockefeller University, New York, NY 10021, USA; Howard Hughes Medical Institute, The Rockefeller University, New York, NY 10021, USA.
Cell
|September 26, 2015
まとめ
レプチンホルモンは 脂肪細胞と直接接触する 交感神経を介して 脂肪の分解を誘発します これらの神経を活性化することで 白い脂肪組織を減少させ 新しい脂肪減少戦略を提示できます
科学分野:
- 神経内分泌学
- 脂肪組織生物学
- 代謝の調節
背景:
- レプチンは脂肪組織に含まれるホルモンで 白い脂肪の分解を刺激することが知られている.
- レプチンが脂解を媒介する正確なメカニズム,特に神経経路の役割については,さらなる解明が必要である.
研究 の 目的:
- レプチン誘発の脂解を媒介する交感神経繊維の役割を調査する.
- 脂肪代謝における神経脂肪結合とその機能の特徴
主な方法:
- 神経脂肪の相互作用を視覚化するために 2光子顕微鏡を用います
- 脂肪組織への共感性インプットの光遺伝的刺激
- ドーパミン β-ヒドロキシラーゼのノックアウトと シンパティック・インプットの除去を含む 遺伝子操作です
主要な成果:
- 交感神経繊維は直接神経脂肪結合を形成し,脂肪細胞を包み込む.
- これらの神経の光遺伝的活性化により 局所的な脂質分解と白脂肪の減少が起こりました
- シンパティックインプットの除去またはカテコアミン合成の障害は,レプチン刺激による脂解を阻害する.
結論:
- 神経脂肪結合は,白脂肪組織にレプチンの脂解作用を媒介するために不可欠です.
- これらの結合は,レプチンの作用の直接的エフェクタとして作用する.
- 脂肪組織への共感性インプットをターゲットにすることで,中央レプチン抵抗を回避する潜在的脂肪減少戦略を提示します.
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