Regulatory microRNAs in Brown, Brite and White Adipose Tissue.

Regulatory microRNAs in Brown, Brite and White Adipose Tissue.
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棕色、米色和白色脂肪组织中的调节性微小核糖核酸

DOI:
10.3390/cells9112489
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发表时间:
2020-11-16
期刊:
影响因子:
6
通讯作者:
Randeva HS
Randeva HS
中科院分区:
生物学2区
文献类型:
--
作者:
Gharanei S;Shabir K;Brown JE;Weickert MO;Barber TM;Kyrou I;Randeva HS

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微小RNA(miRNAs)是一类短链非编码RNA,它们通过靶向信使RNA来调节基因表达,诱导翻译抑制和信使RNA降解。miRNAs在脂肪组织(AT)中对基因表达的这种调节会影响代谢和能量稳态的调节,特别是考虑到哺乳动物中存在不同类型的脂肪细胞,即白色脂肪细胞(白色脂肪组织;WAT)、棕色脂肪细胞(棕色脂肪组织;BAT)以及白色脂肪组织中的诱导型棕色脂肪细胞(米色或亮白色或白色中的棕色脂肪细胞)。实际上,越来越多的miRNAs已被确定通过作用于促进或抑制脂肪细胞分化的转录因子来调节BAT、亮白色脂肪组织和WAT中脂肪生成的关键信号通路。例如,MiR - 328、MiR - 378、MiR - 30b/c、MiR - 455、MiR - 32和MiR - 193b - 365激活棕色脂肪生成,而MiR - 34a、MiR - 133、MiR - 155和MiR - 27b是棕色脂肪生成抑制剂。鉴于白色脂肪组织主要以脂质形式储存能量,而棕色脂肪组织主要以热量形式耗散能量,阐明miRNAs在不同类型脂肪组织中的作用最近引起了大量研究兴趣,其目的还包括开发针对肥胖、糖尿病和其他肥胖相关疾病的基于miRNA的新疗法。因此,本综述对关键调节性miRNAs在BAT、亮白色脂肪组织和WAT中的作用进行了最新的全面概述。
MicroRNAs (miRNAs) constitute a class of short noncoding RNAs which regulate gene expression by targeting messenger RNA, inducing translational repression and messenger RNA degradation. This regulation of gene expression by miRNAs in adipose tissue (AT) can impact on the regulation of metabolism and energy homeostasis, particularly considering the different types of adipocytes which exist in mammals, i.e., white adipocytes (white AT; WAT), brown adipocytes (brown AT; BAT), and inducible brown adipocytes in WAT (beige or brite or brown-in-white adipocytes). Indeed, an increasing number of miRNAs has been identified to regulate key signaling pathways of adipogenesis in BAT, brite AT, and WAT by acting on transcription factors that promote or inhibit adipocyte differentiation. For example, MiR-328, MiR-378, MiR-30b/c, MiR-455, MiR-32, and MiR-193b-365 activate brown adipogenesis, whereas MiR-34a, MiR-133, MiR-155, and MiR-27b are brown adipogenesis inhibitors. Given that WAT mainly stores energy as lipids, whilst BAT mainly dissipates energy as heat, clarifying the effects of miRNAs in different types of AT has recently attracted significant research interest, aiming to also develop novel miRNA-based therapies against obesity, diabetes, and other obesity-related diseases. Therefore, this review presents an up-to-date comprehensive overview of the role of key regulatory miRNAs in BAT, brite AT, and WAT.
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