Comparision of hepatic gene expression between fasted and fed ad lib states in C57B6J (WT) and CREBH KO mice
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PROVIDER: PRJNA600435 | ENA |
REPOSITORIES: ENA
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Project description:To determine hepatic gene expression changes in fasted state, we employed the microarray analysis. We collected the livers from 8-weeks-old male WT and CREBH KO mice in both fasted and fed ad lib states.
2020-01-11 | GSE143420 | GEO
Project description:To determine CREBH-mediated hepatic gene expression changes in hifh-fat high-sucrose (HFHS) dit feeding, we employed the microarray analysis. We collected the livers from male WT and CREBH-Tg mice fed with HFHS diet for 12 weeks from 6 weeks old.
2020-01-11 | GSE143421 | GEO
Project description:Comparision of hepatic gene expression between HFHS diet-fed WT and CREBH-Tg mice
| PRJNA600434 | ENA
Project description:To provide a summary of cells within the mouse hypothalamus in the fed and fasted state, we performed single nucleus RNA sequencing on 12 mice fed ad libitum, and 6 mice that were fasted overnight. Hypothalami were dissected and stored at -80ºC overnight. The next day single nucleus supensions were made, pooling together hypothalamic from the same feeding condition (2 x ad libitum prepared on separate days; 1 x overnight fast). Susepensions were FACS sorted for DRAQ5 positive events. Single nucleus RNA sequencing libraries were generated using the 10X Chromium single cell 3' reagents.
2022-09-01 | GSE207736 | GEO
Project description:We report the RNA-Sequencing data for the livers of C57BL/6J mice fed ad libitum or were fasted for 16 hour.
2021-02-26 | GSE159038 | GEO
Project description:The Mitochondrial Unfolded Protein Response (UPRmt), a mitochondria-originated stress response to altered mitochondrial proteostasis, plays important roles in various pathophysiological processes. In this study, we revealed that the endoplasmic reticulum (ER)-tethered stress sensor CREBH regulates UPRmt to maintain mitochondrial homeostasis and function in the liver. CREBH is enriched in and required for hepatic Mitochondria-Associated Membrane (MAM) expansion induced by energy demands. Under a fasting challenge or during the circadian cycle, CREBH is activated to promote expression of the genes encoding the key enzymes, chaperones, and regulators of UPRmt in the liver. Activated CREBH, cooperating with peroxisome proliferator-activated receptor α (PPARα), activates expression of Activating Transcription Factor (ATF) 5 and ATF4, two major UPRmt transcriptional regulators, independent of the ER-originated UPR (UPRER) pathways. Hepatic CREBH deficiency leads to accumulation of mitochondrial unfolded proteins, decreased mitochondrial membrane potential, and elevated cellular redox state. Dysregulation of mitochondrial function caused by CREBH deficiency coincides with increased hepatic mitochondrial oxidative phosphorylation (OXPHOS) but decreased glycolysis. CREBH knockout mice display defects in fatty acid oxidation and increased reliance on carbohydrate oxidation for energy production. In summary, our studies uncover that hepatic UPRmt is activated through CREBH under physiological challenges, highlighting a molecular link between ER and mitochondria in maintaining mitochondrial proteostasis and energy homeostasis under stress conditions.
2024-11-15 | GSE281608 | GEO
Project description:Metabolic homeostasis in mammals critically depends on the regulation of fasting-induced genes by CREB in the liver. Previous genome-wide analysis has shown that only a small percentage of CREB target genes are induced in response to fasting-associated signaling pathways. The precise molecular mechanisms by which CREB specifically targets these genes in response to alternating hormonal cues remain to be elucidated. We performed chromatin immunoprecipitation coupled to high-throughput sequencing of CREB in livers from both fasted and re-fed mice. In order to quantitatively compare the extent of CREB-DNA interactions genome-wide between these two physiological conditions we developed a novel, robust analysis method, termed the M-bM-^@M-^Xsingle sample independenceM-bM-^@M-^Y (SSI) test that greatly reduced the number of false positive peaks. We found that CREB remains constitutively bound to its target genes in the liver regardless of the metabolic state. Integration of the CREB cistrome with expression microarrays of fasted and re-fed mouse livers and ChIP-seq data for additional transcription factors revealed that the gene expression switches between the fasted and fed states are associated with co-localization of additional transcription factors at CREB sites. Our results support a model in which CREB is constitutively bound to thousands of potential target genes and combinatorial interactions between DNA-binding factors are necessary to achieve the specific transcriptional response of the liver to fasting. Furthermore, our genome-wide analysis identifies thousands of novel CREB target genes in liver, including a previously unknown role for CREB in regulating ER stress genes in response to nutrient influx. CREB ChIP-seq was performed on mouse liver from fasted and re-fed mice, using 5 separate biological replicates for each condition. GR and C/EBP(beta) ChIP-seq were performed as single replicates on ad-lib fed mice.
2013-05-01 | E-GEOD-45674 | biostudies-arrayexpress
Project description:Regulation of nutrient status during fasting and refeeding plays an important role in maintaining metabolic homeostasis in the liver. Thus, we investigated the impact of the physiological fed–fasted–refed cycle on hepatic gene expression in nutrient-sensitive mice. We performed transcriptomic analysis of liver samples in fed, fasted and refed groups of mice. Through mRNA-sequencing (RNA-Seq) and miRNA-Seq, we compared fasted and fed states (fasted versus fed cohort) as well as refed and fasted states (refed versus fasted cohort) to detect dynamic alterations of hepatic mRNA– miRNA expression during the fed–fasted–refed cycle
2023-02-24 | GSE225696 | GEO
Project description:Regulation of nutrient status during fasting and refeeding plays an important role in maintaining metabolic homeostasis in the liver. Thus, we investigated the impact of the physiological fed–fasted–refed cycle on hepatic gene expression in nutrient-sensitive mice. We performed transcriptomic analysis of liver samples in fed, fasted and refed groups of mice. Through mRNA-sequencing (RNA-Seq) and miRNA-Seq, we compared fasted and fed states (fasted versus fed cohort) as well as refed and fasted states (refed versus fasted cohort) to detect dynamic alterations of hepatic mRNA– miRNA expression during the fed–fasted–refed cycle
2023-02-24 | GSE225695 | GEO
Project description:Cyclic AMP-responsive element-binding protein H (CREBH, encoded by Creb3l3) is a transcription factor that regulates the expression of genes that control lipid and glucose metabolism, as well as inflammation. CREBH is upregulated in the liver under conditions of overnutrition, and mice globally lacking the gene (CREBH-/-) are highly susceptible to diet-induced obesity, insulin resistance (IR) and hepatic steatosis. The net protective effects of CREBH have been attributed in large part to the activities of Fibroblast growth factor (Fgf)-21 (Fgf21), a target gene that promotes weight loss, improves glucose homeostasis and reduces hepatic lipid accumulation. To explore the possibility that activation of the CREBH-Fgf21 axis could ameliorate established effects of high fat feeding, we generated an inducible transgenic hepatocyte-specific CREBH overexpression mouse model (Tg-rtTA). Acute overexpression of CREBH in livers of Tg-rtTA mice effectively reversed diet-induced obesity, IR and hepatic steatosis. These changes were associated with increased activities of thermogenic brown and beige adipose tissues in Tg-rtTA mice, leading to reductions in fat mass, along with enhanced insulin sensitivity and glucose tolerance. Genetically silencing of Fgf21 in Tg-rtTA mice abrogated the CREBH-mediated reductions in body weight loss, but only partially reversed the observed improvements in glucose metabolism. These findings reveal that the protective effects of CREBH activation may be leveraged to mitigate diet-induced obesity and associated metabolic abnormalities in both Fgf21-dependent and -independent pathways.
2021-04-30 | GSE173548 | GEO