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Hepatokine Pregnancy Zone Protein Governs the Diet‐Induced Thermogenesis Through Activating Brown Adipose Tissue
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Hepatokine Pregnancy Zone Protein Governs the Diet‐Induced Thermogenesis Through Activating Brown Adipose Tissue
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Journal Article
Hepatokine Pregnancy Zone Protein Governs the Diet‐Induced Thermogenesis Through Activating Brown Adipose Tissue
2021
Overview
Intermittent fasting (IF), as a dietary intervention for weight loss, takes effects primarily through increasing energy expenditure. However, whether inter‐organ systems play a key role in IF remains unclear. Here, a novel hepatokine, pregnancy zone protein (PZP) is identified, which has significant induction during the refeeding stage of IF. Further, loss of function studies and protein therapeutic experiment in mice revealed that PZP promotes diet‐induced thermogenesis through activating brown adipose tissue (BAT). Mechanistically, circulating PZP can bind to cell surface glucose‐regulated protein of 78 kDa (GRP78) to promote uncoupling protein 1 (UCP1) expression via a p38 MAPK‐ATF2 signaling pathway in BAT. These studies illuminate a systemic regulation in which the IF promotes BAT thermogenesis through the endocrinal system and provide a novel potential target for treating obesity and related disorders. This paper reports a novel hepatokine, pregnancy zone protein (PZP), which is significant induction by refeeding. Loss of function studies and protein therapeutic experiment in mice reveal that PZP promotes diet‐induced thermogenesis through activating brown adipose tissue (BAT) via p38 MAPK‐ATF2‐UCP1 signaling pathway in BAT. These studies provide a novel potential target for treating obesity and related disorders.
Publisher
John Wiley & Sons, Inc,John Wiley and Sons Inc,Wiley
Subject
Adipose Tissue, Brown - metabolism
/ Adult
/ Animals
/ Body fat
/ Endoplasmic Reticulum Chaperone BiP - antagonists & inhibitors
/ Endoplasmic Reticulum Chaperone BiP - genetics
/ Endoplasmic Reticulum Chaperone BiP - metabolism
/ Energy
/ Female
/ Food
/ Humans
/ Liver
/ Male
/ Mice
/ Obesity
/ Pregnancy Proteins - genetics
/ Pregnancy Proteins - metabolism
/ Proteins
/ RNA, Small Interfering - metabolism
/ Uncoupling Protein 1 - deficiency
/ Uncoupling Protein 1 - genetics
