研究發現調節產熱的脂肪細胞亞群
作者:
小柯機器人發布時間:2020/10/29 15:37:24
瑞士蘇黎世聯邦理工學院Christian Wolfrum和Wenfei Sun研究組合作取得一項新突破。他們利用單核RNA測序(snRNA-seq)揭示了一個調節產熱的脂肪細胞亞群。相關論文於2020年10月28日發表在《自然》雜誌上。
他們在小鼠和人中使用snRNA-seq分析來表徵脂肪細胞異質性。他們確定了小鼠脂肪細胞的一個罕見亞群,在較高的溫度下會大量增加,並且他們顯示該亞群通過乙酸鹽介導的生熱能力來調節鄰近的脂肪細胞活性。人脂肪組織中該亞群的細胞數量更多,這可以解釋與小鼠脂肪組織相比,人的致熱活性較低,並表明靶向該途徑可用於恢復致熱活性。
據悉,脂肪組織通常根據其功能分為白色、棕色或米色(棕褐色)脂肪組織。它是全身代謝的重要調節劑,肥胖中脂肪組織功能異常會導致各種繼發性代謝併發症。此外,脂肪組織還充當信號樞紐,通過旁分泌和內分泌信號來調節全身代謝。
附:英文原文
Title: snRNA-seq reveals a subpopulation of adipocytes that regulates thermogenesis
Author: Wenfei Sun, Hua Dong, Miroslav Balaz, Michal Slyper, Eugene Drokhlyansky, Georgia Colleluori, Antonio Giordano, Zuzana Kovanicova, Patrik Stefanicka, Lucia Balazova, Lianggong Ding, Anna Sofie Husted, Gottfried Rudofsky, Jozef Ukropec, Saverio Cinti, Thue W. Schwartz, Aviv Regev, Christian Wolfrum
Issue&Volume: 2020-10-28
Abstract: Adipose tissue is usually classified on the basis of its function as white, brown or beige (brite)1. It is an important regulator of systemic metabolism, as shown by the fact that dysfunctional adipose tissue in obesity leads to a variety of secondary metabolic complications2,3. In addition, adipose tissue functions as a signalling hub that regulates systemic metabolism through paracrine and endocrine signals4. Here we use single-nucleus RNA-sequencing (snRNA-seq) analysis in mice and humans to characterize adipocyte heterogeneity. We identify a rare subpopulation of adipocytes in mice that increases in abundance at higher temperatures, and we show that this subpopulation regulates the activity of neighbouring adipocytes through acetate-mediated modulation of their thermogenic capacity. Human adipose tissue contains higher numbers of cells of this subpopulation, which could explain the lower thermogenic activity of human compared to mouse adipose tissue and suggests that targeting this pathway could be used to restore thermogenic activity.
DOI: 10.1038/s41586-020-2856-x
Source: https://www.nature.com/articles/s41586-020-2856-x