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Increased phosphocreatine/creatine ratio in white adipocytes promotes inflammation

ABSTRACT: Increased phosphocreatine/creatine ratio in white adipocytes promotes inflammation

PROVIDER: PRJNA791244 | ENA |

REPOSITORIES: ENA

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Increased phosphocreatine/creatine ratio in white adipocytes promotes inflammation

Project description:The mechanisms promoting disturbed white adipocyte function in obesity remain largely unclear. Herein, we integrate white adipose tissue (WAT) metabolomic and transcriptomic data from clinical cohorts and find that the WAT phosphocreatine/creatine ratio is increased and creatine kinase-B expression and activity is decreased in the obese state. . In human in vitro and murine in vivo models, we demonstrate that decreased phosphocreatine metabolism in white adipocytes alters AMPK activity via effects on ATP/ADP levels, independently of WAT beigeing. This disturbance promotes a pro-inflammatory profile characterized, in part, by increased CCL2 production. These data suggest that the phosphocreatine/creatine system links cellular energy shuttling with pro-inflammatory responses in human and murine white adipocytes. Our findings provide unexpected perspectives on the mechanisms driving WAT inflammation in obesity and may present avenues to target adipocyte dysfunction.

2022-01-27 | GSE192361 | GEO

Creatine mediated crosstalk between adipocytes and cancer cells regulates obesity-driven breast cancer

Project description:Obesity is a major risk factor for adverse outcomes in breast cancer. Maguire, Ackerman et al. reveal Gatm and Acsbg1 as molecular regulators of obesity-driven breast cancer progression. They further show that in obesity creatine is a key metabolite in the crosstalk between adipocytes and breast tumors.

2021-01-22 | GSE165273 | GEO

Ctnnb1/β-catenin inactivation in UCP1-positive adipocytes augments the browning of white adipose tissue

Project description:Canonical WNT pathway in mature adipocytes exacerbates obesity. In this study, we constructed UCP1-positive adipocytes-specific Ctnnb1 knockout mice (UBKO) and observed increased “browning” of white adipose tissue (WAT) following cold exposure or CL-316,243 administration compared to controls. UBKO mice also displayed increased energy expenditure. Furthermore, β-catenin (encoded by Ctnnb1) inhibited thermogenic genes expression in differentiated beige adipocytes and repressed Ucp1 expression at transcription level. Transcriptome analysis revealed UBKO mice treated with CL-316,243 had enhanced mitochondrial function and downregulated immunerelated genes in WAT. Improved glucose tolerance and insulin sensitivity were observed in 50-week-old UBKO mice. Public datasets indicated CTNNB1 expression inversely correlated with several thermogenic genes expression in human adipose/adipocytes, and positively correlated with body mass index (BMI) or waist-hip ratio (WHR). We proposed that intervention of β-catenin in adipocytes could be an effective strategy to enhance energy expenditure and improve age-related metabolic performance.

2023-03-31 | GSE227415 | GEO

Creatine mediated crosstalk between adipocytes and cancer cells regulates obesity-driven breast cancer

Project description:Creatine mediated crosstalk between adipocytes and cancer cells regulates obesity-driven breast cancer

| PRJNA693853 | ENA

Combined α- and β-adrenergic receptor activation triggers thermogenesis by the futile creatine cycle.

Project description:Noradrenaline regulates cold-stimulated adipocyte thermogenesis. Aside from cAMP signaling downstream of β-adrenergic receptor (βAR) activation, how noradrenaline promotes thermogenic output is still not fully understood. Here, we show that coordinated α1-adrenergic receptor (α1AR) and β3AR signaling induces the expression of thermogenic genes of the futile creatine cycle, and that EBFs, ERRs, and PGC1α are required for this response in vivo. Noradrenaline triggers physical and functional coupling between the α1AR subtype (ADRA1A) to Gαq to promote adipocyte thermogenesis in a manner that is dependent on the effector proteins of the futile creatine cycle, creatine kinase b (CKB) and tissue-nonspecific alkaline phosphatase (TNAP). Combined Gαq and Gαs signaling selectively in adipocytes promotes a continual rise in whole-body energy expenditure, and CKB is required for this effect. Thus, the ADRA1A-Gαq-futile creatine cycle axis is a key regulator of facultative and adaptive thermogenesis.

2022-09-08 | GSE207340 | GEO

Combined α- and β-adrenergic receptor activation triggers thermogenesis by the futile creatine cycle.

2022-09-08 | GSE207341 | GEO

Expression Data from Bone Marrow Progenitor-Derived Adipocytes, White Adipocytes and Brown Adipocytes.

Project description:We have identified a population of adipocytes in fat tissue that arise from bone marrow-derived progenitor cells. We used microarrays to compare the global gene expression patterns of the bone marrow progenitor-derived adipocytes as well as conventional white and brown adipocytes to evaluate the relationship between these adipocyte subpopulations. Gonadal fat tissue (for white adipocytes) and intrascapular fat tissue (for brown adipocytes) was digested with collagenase and adipocytes were recovered by centrifugation/flotation. Bone marrow derived adipocytes were isolated from the adipocyte fraction of gonadal fat tissue from mice receiving bone marrow tranplants from donors expressing either green fluorescent protein (GFP) or beta-galactosidase (LacZ) by flow cytometry.

2010-01-08 | E-GEOD-19757 | biostudies-arrayexpress

Creatine increases health and life span in mice

Project description:Here we show that oral creatine (Cr) supplementation leads to increased life span in mice. Treated mice showed improved neurobehavioral performance, decreased accumulation of the aging pigment lipofuscin and upregulation of “anti-aging” genes in brain. As Cr is virtually free of adverse effects, it may be a promising food supplement for healthy aging in man. Keywords: creatine, life span, neurobehavioural performance, microarray, oxidative stress, aging

2007-06-13 | GSE5140 | GEO

Transcription profiling of brains from mice fed with or without creatine supplementation to study the molecular mechanism of creatine improving health and life span in mice

Project description:Here we show that oral creatine (Cr) supplementation leads to increased life span in mice. Treated mice showed improved neurobehavioral performance, decreased accumulation of the aging pigment lipofuscin and upregulation of anti-aging genes in brain. As Cr is virtually free of adverse effects, it may be a promising food supplement for healthy aging in man. Experiment Overall Design: 6 biological replicates for creatine-treated mice, 7 biological replicates for untreated mice.

2007-11-22 | E-GEOD-5140 | biostudies-arrayexpress

Expression Data from Bone Marrow Progenitor-Derived Adipocytes, White Adipocytes and Brown Adipocytes.

2010-01-08 | GSE19757 | GEO

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