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The transcription factor Hepatocyte Nuclear Factor 4A acts in the intestine to promote white adipose tissue energy storage

ABSTRACT: The transcription factor Hepatocyte Nuclear Factor 4A acts in the intestine to promote white adipose tissue energy storage

PROVIDER: PRJNA783018 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR17020831_1.fastq.gz	Fastqsanger.gz
	SRR17020831_2.fastq.gz	Fastqsanger.gz
	SRR17020832_1.fastq.gz	Fastqsanger.gz
	SRR17020832_2.fastq.gz	Fastqsanger.gz
	SRR17020833_1.fastq.gz	Fastqsanger.gz

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The transcription factor hepatocyte nuclear factor 4A acts in the intestine to promote white adipose tissue energy storage.

Project description:The transcription factor hepatocyte nuclear factor 4 A (HNF4A) controls the metabolic features of several endodermal epithelia. Both HNF4A and HNF4G are redundant in the intestine and it remains unclear whether HNF4A alone controls intestinal lipid metabolism. Here we show that intestinal HNF4A is not required for intestinal lipid metabolism per se, but unexpectedly influences whole-body energy expenditure in diet-induced obesity (DIO). Deletion of intestinal HNF4A caused mice to become DIO-resistant with a preference for fat as an energy substrate and energetic changes in association with white adipose tissue (WAT) beiging. Intestinal HNF4A is crucial for the fat-induced release of glucose-dependent insulinotropic polypeptide (GIP), while the reintroduction of a stabilized GIP analog rescues the DIO resistance phenotype of the mutant mice. Our study provides evidence that intestinal HNF4A plays a non-redundant role in whole-body lipid homeostasis and points to a non-cell-autonomous regulatory circuit for body-fat management.

| S-EPMC8752770 | biostudies-literature

The transcription factor Hepatocyte Nuclear Factor 4A acts in the intestine to promote white adipose tissue energy storage

Project description:HNF4A is a transcription factor that controls metabolic features of several endodermal epithelia. Using an intestinal conditional mouse model, here we demonstrate that HNF4A is not required for intestinal lipid metabolism per se, but unexpectedly influences whole body energy expenditure under diet-induced obesity (DIO). Deletion of intestinal HNF4A causes mice to become DIO-resistant with preference for fat as an energy substrate and energetic changes in association with white adipose tissue (WAT) beiging. Intestinal HNF4A is crucial for fat-induced release of glucose-dependent insulinotropic polypeptide (GIP), while reintroduction of a stabilized GIP analog rescues the DIO-resistance phenotype of the mutant mice. Our study provides evidence that intestinal HNF4A plays a non-redundant role in whole body lipid homeostasis and points to a novel non-cell-autonomous regulatory circuit for body fat management.

2021-12-21 | GSE189439 | GEO

Cold Storage of Rat Hepatocyte Spheroids

Project description:The purpose of this study was to optimize conditions for cold storage of rat hepatocyte spheroids without freezing. Rat hepatocytes were isolated by a two-step perfusion method; hepatocyte spheroids were formed during 48 h of rocked culture in serum-free medium (SFM). Spheroids were then maintained in rocked culture at 37°C (control condition) or cold stored at 4°C for 24 or 48 h in six different cold storage solutions: SFM alone; SFM + 1 mM deferoxamine (Def); SFM + 1 ?M cyclosporin A (CsA); SFM + 1 mM Def + 1 ?M CsA, University of Wisconsin (UW) solution alone, UW + 1 mM Def.

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The Drosophila Estrogen-Related Receptor acts within the larval fat body to promote triglyceride storage

Project description:The Drosophila Estrogen-Related Receptor acts within the larval fat body to promote triglyceride storage

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The Drosophila Estrogen-Related Receptor acts within the larval fat body to promote triglyceride storage

Project description:Members of the Estrogen-Related Receptor (ERR) family of nuclear receptors (NR) serve a key role in coordinating triglyceride (TAG) accumulation with juvenile growth and development. In both insects and mammals, loss of ERR activity disrupts (TAG) storage during the post-embryonic growth phase, with loss-of-function mutations in mouseErraandDrosophila melanogaster dERRinducing a lean phenotype. However, the role of insect ERRs in controlling TAG accumulation remains poorly understood, as previous multiomic studies largely relied on whole animal analyses. Here we address this shortcoming by using tissue-specific approaches to determine how dERR regulates lipid metabolism within theDrosophilalarval fat body. We found that dERR autonomously promotes TAG accumulation within fat body cells by regulating expression of genes involved in glycolysis, the pentose phosphate pathway, lipid synthesis, andb-oxidation. As an extension of these results, we not only discovered thatdERRmutant fat bodies exhibit decreased expression of known HNF4 target genes but also found that dHNF4 activity is decreased indERRmutants. Overall, our findings indicate that dERR plays a multifaceted role in the larval fat body to coordinate lipid storage with developmental growth and hint at a conserved mechanism by which ERR and HNF4 homologs coordinately regulate metabolic gene expression

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