Journal
INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES
Volume 19, Issue 5, Pages -Publisher
MDPI
DOI: 10.3390/ijms19051396
Keywords
CREBH; SREBP; LXR alpha; PPAR alpha; lipid metabolism; transcription; FGF21
Funding
- JSPS KAKENHI [25282214, 16H03253, 15H02541, 17H06395]
- AMED-CREST
- Japan Foundation for Applied Enzymology
- Ono Medical Research Foundation
- Takeda Science Foundation
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The cyclic adenosine monophosphate (cAMP)-responsive element-binding protein H (CREBH, encoded by CREB3L3) is a membrane-bound transcriptional factor that primarily localizes in the liver and small intestine. CREBH governs triglyceride metabolism in the liver, which mediates the changes in gene expression governing fatty acid oxidation, ketogenesis, and apolipoproteins related to lipoprotein lipase (LPL) activation. CREBH in the small intestine reduces cholesterol transporter gene Npc1l1 and suppresses cholesterol absorption from diet. A deficiency of CREBH in mice leads to severe hypertriglyceridemia, fatty liver, and atherosclerosis. CREBH, in synergy with peroxisome proliferator-activated receptor alpha (PPAR alpha), has a crucial role in upregulating Fgf21 expression, which is implicated in metabolic homeostasis including glucose and lipid metabolism. CREBH binds to and functions as a co-activator for both PPAR and liver X receptor alpha (LXR alpha) in regulating gene expression of lipid metabolism. Therefore, CREBH has a crucial role in glucose and lipid metabolism in the liver and small intestine.
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