Regulation of thermogenesis by the novel brown adipose-specific protein BASIC

新型棕色脂肪特异性蛋白 BASIC 对产热的调节

• 批准号: 10529339
• 负责人: Kevin Qian
• 金额: $ 5.27万
• 依托单位: UNIVERSITY OF CALIFORNIA LOS ANGELES
• 依托单位国家: 美国
• 财政年份: 2019
• 资助国家: 美国
• 起止时间: 2019-12-01 至 2023-11-30
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/10529339
• 关键词: Adipocytes; Adipose tissue; Adrenergic Agents; Adrenergic Receptor; Adverse effects; Affect; Bioinformatics; Biological Assay; Body Temperature; Brain; Brown Fat; CHS1 gene; CRISPR/Cas technology; Catecholamines; Cells; Chronic; Confocal Microscopy; Coupled; Data; Development; Diabetes Mellitus; Disease; Energy Intake; Energy Metabolism; Enzyme-Linked Immunosorbent Assay; Enzymes; Equation; Equilibrium; Extracellular Domain; Failure; Futile Cycling; Gene Expression; Generations; Genes; Genetic Transcription; Genus Hippocampus; Goals; Histology; Homeostasis; Human; Indirect Calorimetry; Introns; Knock-out; Knockout Mice; Lipids; Lipolysis; Literature; Membrane Proteins; Metabolic; Metabolic Diseases; Metabolic syndrome; Mitochondria; Molecular; Molecular Biology; Mus; Names; Obesity; Organ; Organelles; Pathway interactions; Physiological; Physiological Processes; Postsynaptic Membrane; Protein Isoforms; Proteins; Proteomics; Rectum; Regulation; Research; Respiration; Role; Side; Signal Pathway; Signal Transduction; Site; Spirometry; Stimulus; Synapses; Techniques; Technology; Testing; Therapeutic; Therapeutic Intervention; Thermogenesis; Tissues; Translating; Western Blotting; comorbidity; energy balance; genome editing; improved; in vivo; insight; interest; knock-down; mouse model; next generation sequencing; novel; obesity treatment; pharmacologic; presynaptic; programs; protein aminoacid sequence; rectal; therapeutic target; transcriptome sequencing

PROJECT SUMMARY Failure to maintain systemic energy homeostasis—a balance between energy intake and energy expenditure at the organismal level—is the root cause of obesity and its associated comorbidities. As a result, physiological processes that regulate energy intake and/or expenditure are the subject of intense study and hold great promise as therapeutic targets for obesity. Stimulation of nonshivering thermogenesis (NST)—the generation of heat by futile metabolic cycling in brown (BAT) and beige adipose tissue—has garnered considerable interest as a potential means of increasing energy expenditure in humans to protect against obesity and the metabolic syndrome. However, NST-based therapeutic strategies are limited by the adverse effects of inducing futile cycling in non-BAT tissues. Thus, identifying and characterizing novel BAT-specific proteins could provide opportunities for the development of improved obesity interventions targeting NST. Preliminary studies employing next-generation sequencing, molecular biology, genome editing, and proteomic approaches have led to the discovery of a novel BAT-specific protein of unknown function named BASIC. Basic expression is highly induced by environmental and pharmacological activators of NST in mice, and knockdown of BASIC appears to upregulate the thermogenic gene program in cultured adipocytes, implicating BASIC as a cell- intrinsic negative regulator of adipose thermogenesis. The proposed research plan will first use physiologic and molecular approaches to characterize a newly generated BASIC knockout mouse model and thereby determine the consequence of loss of BASIC function on NST in vivo (Aim 1). Further studies will elucidate BASIC's mechanism of action by defining its subcellular localization and examining its effect on thermogenic signaling pathways in primary brown adipocytes (Aim 2). Completion of the proposed aims will shed light on the function of a hitherto undiscovered BAT-specific protein, which may provide insight into new pathways involved in adipose thermogenesis and reveal a potential target for NST-based therapeutic interventions.

项目摘要 未能维持全身能量稳态-能量摄入和能量消耗之间的平衡 在生物体水平-是肥胖及其相关合并症的根本原因。因此，生理 调节能量摄入和/或消耗的过程是深入研究的主题， 有望成为肥胖症的治疗靶点。刺激非颤抖性产热（NST）-产生 在棕色（BAT）和米色脂肪组织中无效的代谢循环产生的热量-已经获得了相当大的 作为增加人类能量消耗以防止肥胖的潜在手段， 代谢综合征然而，基于NST的治疗策略受到诱导肿瘤细胞凋亡的副作用的限制。 非BAT组织中的无效循环。因此，鉴定和表征新的BAT特异性蛋白质可以提供 发展针对NST的改善肥胖干预措施的机会。初步研究 采用下一代测序、分子生物学、基因组编辑和蛋白质组学方法， 导致发现了一种新的BAT特异性蛋白，其功能未知，名为BASIC。基本表达是 在小鼠中，NST的环境和药理学激活剂高度诱导，并且BASIC敲低 似乎上调了培养的脂肪细胞中的产热基因程序，暗示BASIC是一种细胞- 脂肪产热内在负调节因子。拟议的研究计划将首先使用生理和 分子方法来表征新产生的BASIC敲除小鼠模型，从而 确定NST在体内丧失BASIC功能的后果（目的1）。进一步的研究将阐明 通过定义其亚细胞定位和检查其对产热的影响， 原代棕色脂肪细胞中的信号传导途径（Aim 2）。实现拟议目标将有助于 迄今未发现的BAT特异性蛋白的功能，这可能会提供新的途径的见解 参与脂肪产热，并揭示了一个潜在的目标，为NST为基础的治疗干预。

项目成果

CLSTN3β enforces adipocyte multilocularity to facilitate lipid utilization.

CLSTN3β强制脂肪细胞多生对象，以促进脂质利用。

• DOI: 10.1038/s41586-022-05507-1
• 发表时间: 2023-01
• 期刊: NATURE
• 影响因子: 64.8
• 作者: Qian, Kevin;Tol, Marcus J.;Wu, Jin;Uchiyama, Lauren F.;Xiao, Xu;Cui, Liujuan;Bedard, Alexander H.;Weston, Thomas A.;Rajendran, Pradeep S.;Vergnes, Laurent;Shimanaka, Yuta;Yin, Yesheng;Jami-Alahmadi, Yasaman;Cohn, Whitaker;Bajar, Bryce T.;Lin, Chia-Ho;Jin, Benita;DeNardo, Laura A.;Black, Douglas L.;Whitelegge, Julian P.;Wohlschlegel, James A.;Reue, Karen;Shivkumar, Kalyanam;Chen, Feng-Jung;Young, Stephen G.;Li, Peng;Tontonoz, Peter
• 通讯作者: Tontonoz, Peter