Diet-induced obesity Kozak1_ABI_ING
Ontology highlight
ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE4692 | GEO | 2006/04/28
SECONDARY ACCESSION(S): PRJNA96737
REPOSITORIES: GEO
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Project description:The experimental goals of this study were to determine the differences in hypothalamus gene expression in genetically identical mice that have variability in their susceptibility towards diet-induced obesity following 6 weeks feeding a high fat diet, 2 weeks low fat diet and 6 weeks high fat diet. Keywords: Comparative gene expression analysis
2006-04-28 | GSE4697 | GEO
Project description:Inbred C57BL/6J mice differ in their susceptibility to diet-induced obesity. Comparison of the liver transcriptomes leads to genes that are involved in the development as well as the maintenance of fatty liver during the onset of obesity upon high fat diet feeding. Genes being upregulated in DIO responder can be seen as drivers of fatty liver development, while genes upregulated in DIO non-responder are most likely involved in the protection against fatty liver diseases.
2018-10-30 | GSE74542 | GEO
Project description:We determine the role of high fat diet and normal diet induced obesity, progression of differential expression in altering immune response function by RNAseq analysis . We identified several genes that are either upregulated or downregulated upon HFD feeding as compared to ND.
2023-10-01 | GSE244406 | GEO
Project description:The High Fat Diet (HFD)-feeding significantly stimulated fat accumulation in Drosophila adults. Simultaneous feeding of known anti-obesity drugs that having the effect on rat and mouse, Quercetin Glycosides (QG) and Epigallocatechin gallate (EGCG) also suppressed fat accumulation in Drosophila at an equivalent concentration. Therefore, we have established a convenient model system to study on diet-induced fat accumulation and to evaluate effects of anti-obesity drugs using Drosophila. To understand overview of alterations of gene expression due to diet-induced fat accumulation and its suppression by the known anti-obesity drugs, we performed the RNA seq analyses. Consequently, mRNA levels of several genes involved in lipid metabolism, glycolysis/gluconeogenesis and anti-oxidative stress have changed in adults fed the HFD. Moreover, the levels altered in those fed on HFD supplemented with QG or EGCG. Our qRT-PCR further confirmed the RNA-seq data suggesting that expression of five genes essential for lipid metabolism was changed in HFD-fed animals and further altered in the animals treated with anti-obesity drugs. Among them, the most remarkable alteration was observed in dHSL gene encoding a lipase involved in lipid-storage after HFD feeding and the HFD supplemented with QG or EGCG. These changes are consistent with HFD-induced fat accumulation as well as the anti-obesity effects of those two drugs in mammals, suggesting that these genes play an important role in the anti-obesity effects of the drugs. These are the first evidences that whole profiles of altered gene expression under a condition of a diet-induced obesity and its suppression by anti-obesity drugs in Drosophila.
2018-10-20 | GSE121531 | GEO
Project description:High-fat diet (HFD) induced obesity (DIO) has been shown impacts on metabolism, hormonal profile, male fertility, and spermatogenesis. We employed genome-wide transcriptional analysis on the testis of diet induced obesity (DIO) and normal chow (NC) C57BL/6 J male mice to search genes regulated by obesity in testis. Both blood glucose and lipids contents significantly increased in DIO mice after 8 weeks fat-rich feeding. RNA-seq analysis revealed 371 down-regulated and 460 up-regulated transcripts in DIO group comparing to NC group. Chromosome 3, 4, 9, 16, and 18 were significantly more active, while chromosome 5, 10, and 19 were significantly more inactive after 8-week fat-diet feeding. Wilcoxon enrichment analysis discovered that the thermogenesis pathway (KEGG) was significantly enriched in the testis of DIO group (with 8 enriched up-regulated genes: Smarca2, Adcy3, Atp5pb, Creb1, Gnas, Rps6kb2, Upcrc1 and Dpf1). Real-time PCR further confirmed that Smarca2 and Atp5pb were upregulated in the testis of DIO mice. These finding implied that diet-induced thermogenesis pathways could be altered in the testis of DIO mice.
2023-02-04 | GSE196119 | GEO
Project description:In obesity, misalignment of feeding time with the light/dark environment results in disruption of peripheral circadian clocks. Conversely, restricting feeding to the active period mitigates metabolic syndrome through mechanisms that remain unknown. Here we show that adipocyte thermogenesis is essential for the healthful metabolic response to time restricted feeding. Genetic enhancement of adipocyte thermogenesis through ablation of Zfp423 attenuates obesity caused by circadian mistimed high fat diet feeding through a mechanism involving creatine metabolism. Circadian control of adipocyte creatine metabolism underlies timing of diet-induced thermogenesis, and enhancement of adipocyte circadian rhythms through overexpression of the clock activator Bmal1 ameliorates metabolic complications during diet induced obesity. These findings establish creatine mediated diet-induced thermogenesis as a bioenergetic mechanism driving metabolic benefits during time-restricted feeding.
2022-10-24 | GSE181443 | GEO
Project description:Rodents respond to chronic high fat diet in at least two ways: some of them may readily gain body weight and become obese (termed obesity-prone), and others may not (termed obesity-resistant). An integrated approach of transcript and metabolic profiling of obesity-prone and obesity-resistant rats has been conducted, showing significantly different transcript and metabolic profiles in the two phenotypes. The major transcriptional differences involved hepatic fatty acid metabolism and ketogenesis in response to 16 weeks of high fat diet. At the same time, the different metabolic profiles (in liver tissue extracts, serum, and urine) between the two phenotypes could be ascribed to the corresponding pathways identified with multivariate statistical analysis, including fatty acid metabolism, Krebs cycle, and amino acid metabolism. The integration of results from both transcript and metabolic profiling revealed the different responses to dietary intervention of the two phenotypes and the physiological basis of susceptibility to metabolic disease in obesity-prone rats from a systematic view.
2008-05-20 | GSE11492 | GEO
Project description:The global rise in obesity has revitalized a search to understand genetic, and in particular, epigenetic factors underlying the disease. We present a Drosophila model of paternal-diet-induced Inter-Generational Metabolic Reprogramming (IGMR) and identify genes required for its encoding in offspring. Intriguingly, we find that as little as two days of dietary intervention in fathers elicits obesity in offspring. Paternal sugar acts as a physiological suppressor of variegation, de-silencing chromatin state-defined transcriptional units in both mature sperm and in offspring embryos. We identify requirements for H3K9/K27me3 dependent reprogramming of metabolic genes in two distinct germline and zygotic windows. Critically, we find evidence that a similar system regulates obesity-susceptibility and phenotype variation in mice and humans. The findings provide insight into the mechanisms underlying intergenerational metabolic reprogramming and carry profound implications for our understanding of phenotypic variation and evolution. RNA-seq on Drosophila embryos and sperm samples fed medium and high sugar.
2014-12-04 | E-GEOD-62668 | biostudies-arrayexpress
Project description:Objective Recent evidence indicates that the adult hematopoietic system is susceptible to diet-induced lineage skewing. It is not known whether the developing hematopoietic system is subject to metabolic programming via in utero high fat diet (HFD) exposure, an established mechanism of adult disease in several organ systems. We previously reported substantial losses in offspring liver size with prenatal HFD. As the liver is the main hematopoietic organ in the fetus, we asked whether the developmental expansion of the hematopoietic stem and progenitor cell (HSPC) pool is compromised by prenatal HFD and/or maternal obesity. Methods We used quantitative assays, progenitor colony formation, flow cytometry, transplantation, and gene expression assays with a series of dietary manipulations to test the effects of gestational high fat diet and maternal obesity on the day 14.5 fetal liver hematopoietic system. Results Maternal obesity, particularly when paired with gestational HFD, restricts physiological expansion of fetal HSPCs while promoting the opposing cell fate of differentiation. Importantly, these effects are only partially ameliorated by gestational dietary adjustments for obese dams. Competitive transplantation reveals compromised repopulation and myeloid-biased differentiation of HFD-programmed HSPCs to be a niche-dependent defect, apparent in HFD-conditioned male recipients. Fetal HSPC deficiencies coincide with perturbations in genes regulating metabolism, immune and inflammatory processes, and stress response, along with downregulation of genes critical for hematopoietic stem cell self-renewal and activation of pathways regulating cell migration. Conclusions Our data reveal a previously unrecognized susceptibility to nutritional and metabolic developmental programming in the fetal HSPC compartment, which is a partially reversible and microenvironment-dependent defect perturbing stem and progenitor cell expansion and hematopoietic lineage commitment. Examination of differentially expressed genes between gestational day 15 (+/- 0.5 days) C57BL/6 mouse fetal livers from diet-induced (60% fat diet) obese or control female mice.
2014-10-25 | E-GEOD-62715 | biostudies-arrayexpress
Project description:Time-course analysis of adipocyte gene expression profiles response to high fat diet. The hypothesis tested in the present study was that in diet-induced obesity, early activation of TLR-mediated inflammatory signaling cascades by CD antigen genes, leads to increased expression of pro-inflammatory cytokines and chemokines, resulting in chronic low-grade inflammation. Early changes in collagen genes may trigger the accumulation of ECM components, promoting fibrosis in the later stages of diet-induced obesity. New therapeutic approaches targeting visceral adipose tissue genes altered early by HFD feeding may help ameliorate the deleterious effects of a diet-induced obesity. Total RNA obtained from isolated epididymal and mesenteric adipose tissue of C57BL/6J mice fed normal diet or high fat diet for 2, 4, 8, 20 and 24weeks
2014-03-01 | E-GEOD-39549 | biostudies-arrayexpress