Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJDB13387 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| DRR360224.fastq.gz | Fastqsanger.gz | |||
| DRR360225.fastq.gz | Fastqsanger.gz | |||
| DRR360226.fastq.gz | Fastqsanger.gz | |||
| DRR360227.fastq.gz | Fastqsanger.gz | |||
| DRR360228.fastq.gz | Fastqsanger.gz |
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Project description:Adipocyte hypertrophy during obesity triggers chronic inflammation, leading to metabolic disorders. However, the role of adipocyte-specific inflammatory signalling in metabolic syndrome remains unclear. The linear ubiquitin chain assembly complex, LUBAC, is an E3-ligase that generates non-degradative linear ubiquitination (Lin-Ub). LUBAC regulates NF-κB/MAPK-driven inflammation and prevents cell death triggered by immune receptors like TNF-receptor-1. Here we show that mice lacking HOIP, LUBAC’s catalytic subunit, in adipocytes (HoipA-KO) display lipodystrophy and heightened susceptibility to obesity-induced metabolic syndrome, particularly Metabolic Dysfunction-Associated Steatotic Liver Disease (MASLD). Mechanistically, loss of HOIP attenuates TNF-induced NF-κB activation and promotes cell death in human adipocytes. Inhibiting caspase-8-mediated cell death is sufficient to prevent lipodystrophy and MASLD in HoipA-KO obese mice. Importantly, HOIP expression in adipose tissue positively correlates with metabolic fitness in obese individuals. Overall, our findings reveal a critical role for Lin-Ub in protecting against obesity-related metabolic syndrome by mitigating cell death-driven adipose tissue inflammation
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