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BCAA catabolism in brown fat controls energy homeostasis through SLC25A44

机译:棕色脂肪中的BCAA分解代谢通过SLC25A44控制能量稳态

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摘要

Branched-chain amino acid (BCAA; valine, leucine and isoleucine) supplementation is often beneficial to energy expenditure; however, increased circulating levels of BCAA are linked to obesity and diabetes. The mechanisms of this paradox remain unclear. Here we report that, on cold exposure, brown adipose tissue (BAT) actively utilizes BCAA in the mitochondria for thermogenesis and promotes systemic BCAA clearance in mice and humans. In turn, a BAT-specific defect in BCAA catabolism attenuates systemic BCAA clearance, BAT fuel oxidation and thermogenesis, leading to diet-induced obesity and glucose intolerance. Mechanistically, active BCAA catabolism in BAT is mediated by SLC25A44, which transports BCAAs into mitochondria. Our results suggest that BAT serves as a key metabolic filter that controls BCAA clearance via SLC25A44, thereby contributing to the improvement of metabolic health.
机译:支链氨基酸(BCAA;缬氨酸,亮氨酸和异亮氨酸)的补充通常有益于能量消耗。然而,循环中BCAA水平的升高与肥胖和糖尿病有关。这种矛盾的机制仍不清楚。在这里,我们报告说,在冷暴露下,棕色脂肪组织(BAT)积极利用线粒体中的BCAA进行生热作用,并促进小鼠和人类体内的BCAA清除。反过来,BCAA分解代谢中的BAT特异性缺陷会减弱全身BCAA清除,BAT燃料氧化和生热作用,从而导致饮食引起的肥胖症和葡萄糖耐受不良。从机理上讲,BAT中的主动BCAA分解代谢是由SLC25A44介导的,它将BCAA转运到线粒体中。我们的结果表明,BAT是通过SLC25A44控制BCAA清除的关键代谢过滤器,从而有助于改善代谢健康。

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  • 来源
    《Nature》 |2019年第7771期|614-619|共6页
  • 作者单位

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    Tenshi Coll, Dept Nutr, Sapporo, Hokkaido, Japan;

    Keio Univ, Inst Adv Biosci, Yamagata, Japan;

    Keio Univ, Inst Adv Biosci, Yamagata, Japan;

    Univ Calif San Francisco, Dept Bioengn & Therapeut Sci, San Francisco, CA 94143 USA;

    Duke Univ, Duke Mol Physiol Inst, Durham, NC USA;

    Duke Univ, Duke Mol Physiol Inst, Durham, NC USA;

    Duke Univ, Duke Mol Physiol Inst, Durham, NC USA;

    Duke Univ, Duke Mol Physiol Inst, Durham, NC USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA|Tokyo Med & Dent Univ, Dept Mol Endocrinol & Metab, Tokyo, Japan;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    Keio Univ, Inst Adv Biosci, Yamagata, Japan;

    Keio Univ, Inst Adv Biosci, Yamagata, Japan;

    Keio Univ, Inst Adv Biosci, Yamagata, Japan;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Univ Calif San Francisco, Dept Microbiol & Immunol, San Francisco, CA 94143 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

    Washington Univ, Ctr Human Nutr, St Louis, MO 63110 USA;

    Kyoto Univ, Lab Mol Funct Food, Grad Sch Agr, Uji, Kyoto, Japan;

    Kyoto Univ, Lab Mol Funct Food, Grad Sch Agr, Uji, Kyoto, Japan;

    Kyoto Univ, Lab Mol Funct Food, Grad Sch Agr, Uji, Kyoto, Japan;

    Rutgers State Univ, Dept Kinesiol & Hlth, Sch Arts & Sci, New Brunswick, NJ USA;

    Univ Calif San Francisco, Dept Bioengn & Therapeut Sci, San Francisco, CA 94143 USA;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Univ Calif San Francisco, Dept Microbiol & Immunol, San Francisco, CA 94143 USA;

    Hokkaido Univ, Dept Biomed Sci, Grad Sch Vet Med, Sapporo, Hokkaido, Japan;

    Keio Univ, Inst Adv Biosci, Yamagata, Japan;

    UCSF Diabet Ctr, San Francisco, CA 94143 USA|Eli & Edythe Broad Ctr Regenerat Med & Stem Cell, San Francisco, CA 94131 USA|Univ Calif San Francisco, Dept Cell & Tissue Biol, San Francisco, CA 94143 USA;

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