Insulin resistance and white adipose tissue inflammation are uncoupled in energetically challenged Fsp27-deficient mice

文献类型： 外文期刊

第一作者： Zhou, Linkang

作者： Zhou, Linkang;Xia, Xiayu;Su, Lu;Yu, Miao;Wu, Lizhen;Li, Peng;Zhou, Linkang;Xia, Xiayu;Su, Lu;Yu, Miao;Wu, Lizhen;Li, Peng;Park, Shi-Young;Jeong, Kyeong-Hoon;Hur, Jang Ho;Oh, Hyunhee;Choi, Cheol Soo;Xu, Li;Ye, Jing;Tamori, Yoshikazu;Tamori, Yoshikazu;Zingaretti, Cristina M.;Cinti, Saverio;Zingaretti, Cristina M.;Cinti, Saverio;Argente, Jesus;Argente, Jesus;Argente, Jesus;Argente, Jesus;Ju, Shenghong;Guan, Feifei;Guan, Feifei;Yang, Hongyuan;Choi, Cheol Soo;Savage, David B.

作者机构：

关键词： FAT-SPECIFIC PROTEIN-27;BIOLOGICAL PATHWAYS;GENETIC ABLATION;LIPID DROPLETS;DEFICIENT MICE;KNOCKOUT MICE;MOUSE MODELS;FACTOR-ALPHA;PPAR-GAMMA;OBESE MICE

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）

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收录情况： SCI

摘要： Fsp27 is a lipid droplet-associated protein almost exclusively expressed in adipocytes where it facilitates unilocular lipid droplet formation. In mice, Fsp27 deficiency is associated with increased basal lipolysis, 'browning' of white fat and a healthy metabolic profile, whereas a patient with congenital CIDEC deficiency manifested an adverse lipodystrophic phenotype. Here we reconcile these data by showing that exposing Fsp27-null mice to a substantial energetic stress by crossing them with ob/ob mice or BATless mice, or feeding them a high-fat diet, results in hepatic steatosis and insulin resistance. We also observe a striking reduction in adipose inflammation and increase in adiponectin levels in all three models. This appears to reflect reduced activation of the inflammasome and less adipocyte death. These findings highlight the importance of Fsp27 in facilitating optimal energy storage in adipocytes and represent a rare example where adipose inflammation and hepatic insulin resistance are disassociated.

分类号： N

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