Low n6/n3 Ratio Consumption of Neonates Establishes Lipid Oxidative Metabolism in Adipocyte Precursor Cells [Bulk RNA-seq]
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ABSTRACT:
ORGANISM(S): Mus musculus
PROVIDER: GSE155893 | GEO | 2022/11/28
REPOSITORIES: GEO
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Project description:Adipocyte precursor cells from 12-day-old pups were characterized by single cell RNA sequencing
2022-11-28 | GSE155894 | GEO
Project description:Attainment of a brown adipocyte cell phenotype in white adipocytes, with their abundant mitochondria and increased energy expenditure potential, is a legitimate strategy for combating obesity. The unique transcriptional regulators of the primary brown adipocyte phenotype are unknown, limiting our ability to promote brown adipogenesis over white. In the present work, we used microarray analysis strategies to study primary preadipocytes, and we made the striking discovery that brown preadipocytes demonstrate a myogenic transcriptional signature, whereas both brown and white primary preadipocytes demonstrate signatures distinct from those found in immortalized adipogenic models. We found a plausible SIRT1-related transcriptional signature during brown adipocyte differentiation that may contribute to silencing the myogenic signature. In contrast to brown preadipocytes or skeletal muscle cells, white preadipocytes express Tcf21, a transcription factor that has been shown to suppress myogenesis and nuclear receptor activity. In addition, we identified a number of developmental genes that are differentially expressed between brown and white preadipocytes and that have recently been implicated in human obesity. The interlinkage between the myocyte and the brown preadipocyte confirms the distinct origin for brown versus white adipose tissue and also represents a plausible explanation as to why brown adipocytes ultimately specialize in lipid catabolism rather than storage, much like oxidative skeletal muscle tissue. Keywords: In vitro differentiation
2007-05-31 | GSE7032 | GEO
Project description:Attainment of a brown adipocyte cell phenotype in white adipocytes, with their abundant mitochondria and increased energy expenditure potential, is a legitimate strategy for combating obesity. The unique transcriptional regulators of the primary brown adipocyte phenotype are unknown, limiting our ability to promote brown adipogenesis over white. In the present work, we used microarray analysis strategies to study primary preadipocytes, and we made the striking discovery that brown preadipocytes demonstrate a myogenic transcriptional signature, whereas both brown and white primary preadipocytes demonstrate signatures distinct from those found in immortalized adipogenic models. We found a plausible SIRT1-related transcriptional signature during brown adipocyte differentiation that may contribute to silencing the myogenic signature. In contrast to brown preadipocytes or skeletal muscle cells, white preadipocytes express Tcf21, a transcription factor that has been shown to suppress myogenesis and nuclear receptor activity. In addition, we identified a number of developmental genes that are differentially expressed between brown and white preadipocytes and that have recently been implicated in human obesity. The interlinkage between the myocyte and the brown preadipocyte confirms the distinct origin for brown versus white adipose tissue and also represents a plausible explanation as to why brown adipocytes ultimately specialize in lipid catabolism rather than storage, much like oxidative skeletal muscle tissue. Experiment Overall Design: Comparisons of white and brown pre- and mature-adiposytes
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| S-EPMC4496986 | biostudies-literature
Project description:HES4 hESC were cultured in serum media and maintained on a layer of mouse embryonic fibroblast feeder cells at a density of 6 x 104 cells/cm2. For differentiation: hESC were differentiated for a total of 14 days. Differentiation was induced by passaging 4 human ES cell pieces onto 12 well plates seeded with 0.67 x 10E4 cells/cm2. Cells were maintained in media containing 20% FCS for 2 days before media containing 5% FCS was used. Reduced serum media was changed every second day for the remaining 12 days ESC cells were taken at time zero and RNA was isolated (hESC_undiff). Cells differentiated by the above procedure at day 14 were isolated and RNA extracted (Diff). The remaining cells were FACs sorted with antibodies to Podocalyxin, CD24 and GCTM-2. Two populations were isolated, 1: Positive for podocalyxin and CD24 and low level of expression of GCTM-2 (POD+CD24+GCTM2Low) and 2: Positive for podocalyxin and CD24 and negative for GCTM-2 (POD+CD24+GCTM2Neg). The experiment was repeated in triplicate. The final aim was to determine the gene expression enrichment in cells with the marker profile (Podocalyxin+, CD24+, GCTM-2-neg) which is predicted to be enriched for kidney precursors. Keywords: cell type comparison
2010-03-16 | GSE15257 | GEO
Project description:We report ATAC seq of white preadipocytes from iWAT of WT and HMGN1 and HMGN2 double knockout (DKO) mice .
2022-10-19 | GSE193332 | GEO
Project description:Fat tissue was resected during gastric bypass surgery for management of obesity. All subjects had fasted at least 10 hours before surgery. Subjects with malignancies were excluded. No subjects were taking thiazolidinediones or steroids. None had fasting plasma glucose levels over 120 mg/ dl. One half to 10 g of abdominal subcutaneous (external to the fascia superficialis), mesenteric, and greater omental fat were obtained from each subject. The tissue was collected in Hank’s balanced salt solution with bicarbonate, penicillin, and gentamicin. Fat tissue was minced and then digested in HBSS containing 1 mg/ml collagenase and 7.5% fetal bovine serum in a 37*C shaking water bath until fragments were no longer visible and the digest had a milky appearance. Digests were filtered and centrifuged at 800xG for 10 min. The digests were treated with an erythrocyte lysis buffer. Cells were plated in 1:1 Dulbecco’s modified Eagle’s medium:Ham’s F12 that contained 10% fetal bovine serum and antibiotics at a density of 4 x 104 cells/cm2. After 18 hours cultures were trypsinized until 95% of cells were detached (leaving endothelial cells and macrophages behind) and re-plated. Macrophages were rare (less than 5 per 106 cells, as assessed by phase contrast microscopy) in the re-plated cultures, irrespective of fat depot origin. Plating medium was changed every 2 days until confluence. For differentiation, preadipocytes were treated for 30 days with plating medium (without serum) enriched with 100 nM dexamethasone, 500 nM human insulin, 200 pM triiodothyronine, 0.5 *M rosiglitazone, antibiotics, and 540 *M methylisobutylxanthine (removed after 2 days). Higher rosiglitazone and insulin concentrations did not further enhance differentiation. Medium was changed every 2 days. For the final 2 days, differentiation medium was removed and cells were cultured in plating medium without serum. Undifferentiated preadipocytes were maintained in plating medium until confluence, when serum was removed for 2 days. For telomerase-expressing clones, preadipocytes were isolated and when cells had undergone 7 population doublings, they were transduced with a retrovirus containing the plasmid, pBABE-hTERT-Hygro. This vector expresses the human telomerase reverse transcriptase component (hTERT) driven by the Moloney murine leukemia virus long terminal repeat promoter and a hygromycin resistance sequence driven by the SV40 promoter. The 3 abdominal subcutaneous and 3 omental stably transduced, hygromycin-resistant clones capable of achieving confluence fastest were selected from 38 subcutaneous and 42 omental clones. Telomerase activity in these clones was verified using a PCR-based telomere repeat amplification protocol. RNA was isolated from preadipocytes by the Trizol method. RNA samples were labeled using the standard one-cycle Affymetrix GeneChip Eukaryotic Target Labeling Assay for Expression Analysis. Samples were hybridized for 16 hours at 45 ºC and 60 rpm, washed and stained according to the standard Affymetrix Antibody Amplification for Eukaryotic Targets protocol, and scanned at 488 nm. Images were quantified and linearly scaled using Affymetrix GeneChip Operating Software 1.1 using default analysis settings. Keywords = adipocyte Keywords = subcutaneous Keywords = mesenteric Keywords = omental Keywords: repeat sample
2005-06-01 | GSE1657 | GEO
Project description:HES4 hESC were cultured in serum media and maintained on a layer of mouse embryonic fibroblast feeder cells at a density of 6 x 104 cells/cm2. For differentiation: hESC were differentiated for a total of 14 days. Differentiation was induced by passaging 4 human ES cell pieces onto 12 well plates seeded with 0.67 x 10E4 cells/cm2. Cells were maintained in media containing 20% FCS for 2 days before media containing 5% FCS was used. Reduced serum media was changed every second day for the remaining 12 days ESC cells were taken at time zero and RNA was isolated (hESC_undiff). Cells differentiated by the above procedure at day 14 were isolated and RNA extracted (Diff). The remaining cells were FACs sorted with antibodies to Podocalyxin, CD24 and GCTM-2. Two populations were isolated, 1: Positive for podocalyxin and CD24 and low level of expression of GCTM-2 (POD+CD24+GCTM2Low) and 2: Positive for podocalyxin and CD24 and negative for GCTM-2 (POD+CD24+GCTM2Neg). The experiment was repeated in triplicate. The final aim was to determine the gene expression enrichment in cells with the marker profile (Podocalyxin+, CD24+, GCTM-2-neg) which is predicted to be enriched for kidney precursors. Keywords: cell type comparison Three consecutive passages of HES4 cells were grown in standard conditions, RNA derived or differentiated for 14 days subject to FACs sorting, collection and RNA isolated. Microarray was performed on a total of 12 samples, (3 replicates of 4 populations).
2010-03-16 | E-GEOD-15257 | biostudies-arrayexpress
Project description:Excessive accumulation of adipose tissue in cultured fish is an outstanding problem in aquaculture. To understand the development of adiposity, it is crucial to identify the genes which expression is associated with adipogenic differentiation. Therefore, the transcriptomic profile at different time points (days 3, 8, 15 and 21) along primary culture development of rainbow trout preadipocytes has been investigated using an Agilent trout oligo microarray. Our analysis identified 4026 genes differentially expressed (fold-change >3) that were divided into two major clusters corresponding to the main phases observed during the preadipocyte culture: proliferation and differentiation. Proliferation cluster comprised 1028 genes up-regulated from days 3 to 8 of culture meanwhile the differentiation cluster was characterized by 2140 induced genes from days 15 to 21. Proliferation was characterized by enrichment in genes involved in basic cellular and metabolic processes (transcription, ribosome biogenesis, translation and protein folding), cellular remodelling and autophagy. In addition, the implication of the eicosanoid signalling pathway was highlighted during this phase. On the other hand, the terminal differentiation phase was enriched with genes involved in energy production, lipid and carbohydrate metabolism. Moreover, during this phase an enrichment in genes involved in the formation of the lipid droplets was evidenced as well as the activation of the TR/RXR and the PPARs signalling pathways. The whole adipogenic process was driven by a coordinated activation of transcription factors and epigenetic modulators. Overall, our study demonstrates the coordinated expression of functionally related genes during proliferation and differentiation of rainbow trout adipocyte cells. Furthermore, the information generated will allow future investigations of specific genes involved in particular stages of fish adipogenesis.
2017-06-09 | GSE90058 | GEO