Dataset Information


HRD1-ERAD controls production of the hepatokine FGF21 through CREBH polyubiquitination.

ABSTRACT: The endoplasmic reticulum-associated protein degradation (ERAD) is responsible for recognizing and retro-translocating protein substrates, misfolded or not, from the ER for cytosolic proteasomal degradation. HMG-CoA Reductase (HMGCR) Degradation protein-HRD1-was initially identified as an E3 ligase critical for ERAD. However, its physiological functions remain largely undefined. Herein, we discovered that hepatic HRD1 expression is induced in the postprandial condition upon mouse refeeding. Mice with liver-specific HRD1 deletion failed to repress FGF21 production in serum and liver even in the refeeding condition and phenocopy the FGF21 gain-of-function mice showing growth retardation, female infertility, and diurnal circadian behavior disruption. HRD1-ERAD facilitates the degradation of the liver-specific ER-tethered transcription factor CREBH to downregulate FGF21 expression. HRD1-ERAD catalyzes polyubiquitin conjugation onto CREBH at lysine 294 for its proteasomal degradation, bridging a multi-organ crosstalk in regulating growth, circadian behavior, and female fertility through regulating the CREBH-FGF21 regulatory axis.


PROVIDER: S-EPMC6236336 | BioStudies | 2018-01-01

REPOSITORIES: biostudies

Similar Datasets

1969-12-31 | S-SCDT-EMBOJ-2018-98942 | BioStudies
2018-01-01 | S-EPMC6236331 | BioStudies
2018-08-17 | GSE118658 | GEO
1000-01-01 | S-EPMC5133830 | BioStudies
2016-01-01 | S-EPMC5014582 | BioStudies
2020-01-01 | S-EPMC7481253 | BioStudies
2009-01-01 | S-EPMC3014991 | BioStudies
2015-01-01 | S-EPMC4411271 | BioStudies
2015-01-01 | S-EPMC4591687 | BioStudies
2020-01-01 | S-EPMC7063134 | BioStudies