Mus musculus
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA356754 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR5088690.fastq.gz | Fastqsanger.gz | |||
| SRR5088691.fastq.gz | Fastqsanger.gz | |||
| SRR5088692.fastq.gz | Fastqsanger.gz | |||
| SRR5088693.fastq.gz | Fastqsanger.gz | |||
| SRR5088694.fastq.gz | Fastqsanger.gz |
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Project description:Purpose: To investigate the involvement of mTORC1 as a mediator of the actions of the PPARγ ligand rosiglitazone in subcutaneous inguinal white adipose tissue transcriptome; Methods: Mice bearing regulatory associated protein of mTOR (Raptor) deletion and therefore mTORC1 deficiency exclusively in adipocytes (adiponectin Cre recombinase) and littermate controls were fed a high-fat diet supplemented or not with the PPARγ agonist rosiglitazone (30 mg/kg/day) for 8 weeks and evaluated for inguinal white adipose tissue transcriptome (Rnaseq); Results: 3,2425 genes had their correspondent mRNA levels altered by either adipocyte Raptor deficiency or rosiglitazone administration or their combination. Among those, 408 genes modulated by rosiglitazone required mTORC1. Conclusion: PPARγ and mTORC1 are essential partners in the regulation of a cluster of genes in inguinal white adipose tissue.
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Project description:Abdominal aortic aneurysm (AAA) is a life-threatening vascular disease without effective medical therapies. Emerging evidences have suggested a crosstalk between adipose tissue and vascular cells and brown adipose tissue is beneficial for cardiovascular health. Nevertheless, whether brown remodeling of white adipose tissue would protect against AAA remains unclear. Here we showed that patients with AAA had a decreased browning level of adipose tissue and induction of adipose tissue browning significantly reduced AAA incidence and attenuated AAA development in mice. Using LC-MS/MS and proteomic analysis, we further identified Follistatin-like 1 (FSTL1) as a novel vessel-protective adipokine secreted by browning adipocytes. Mechanistically, FSTL1 inhibited VSMC apoptosis through DIP2A/AKT signaling. Furthermore, we demonstrated that adipocyte-specific deficiency of FSTL1 abrogated the protective effect of browning induction. Moreover, supplementation of FSTL1 either systemically or patched into hydrogel placing around abdominal aorta markedly limited aortic dilation and AAA progression. Our data suggest a protective role of adipose tissue browning and a novel batokine FSTL1 in the development of AAA, which may represent a novel intervention strategy for AAA.
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