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Coordinated metabolic transitions and gene expression by NAD+ during adipogenesis.

ABSTRACT: Coordinated metabolic transitions and gene expression by NAD+ during adipogenesis.

PROVIDER: PRJNA739727 | ENA |

REPOSITORIES: ENA

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			Action	DRS
	SRR14872522_1.fastq.gz	Fastqsanger.gz
	SRR14872522_2.fastq.gz	Fastqsanger.gz
	SRR14872523_1.fastq.gz	Fastqsanger.gz
	SRR14872523_2.fastq.gz	Fastqsanger.gz
	SRR14872524_1.fastq.gz	Fastqsanger.gz

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Coordinated metabolic transitions and gene expression by NAD+ during adipogenesis.

Project description:Adipocytes are the main cell type in adipose tissue, a critical regulator of metabolism, highly specialized in storing energy as fat. Adipocytes differentiate from multipotent mesenchymal stromal cells through adipogenesis. Using RNA-seq we explored the effect of manipulating NAD+ bioavailability during adipogenic differentiation from human mesenchymal stem cells. Cells were harvested either undifferentiated (hMSC) or after days 8 and 16 of adipogenic induction. During adipogenesis, cells were treated with either NAD+ (5 mM), or FK866 (1 nM) or EX527 (50 μM).

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Coordinated metabolic transitions and gene expression by NAD+ during adipogenesis.

Project description:Adipocytes are the main cell type in adipose tissue, which is a critical regulator of metabolism, highly specialized in storing energy as fat. Adipocytes differentiate from multipotent mesenchymal stromal cells (hMSCs) through adipogenesis, a tightly controlled differentiation process involving close interplay between metabolic transitions and sequential programs of gene expression. However, the specific gears driving this interplay remain largely obscure. Additionally, the metabolite nicotinamide adenine dinucleotide (NAD+) is becoming increasingly recognized as a regulator of lipid metabolism, and a promising therapeutic target for dyslipidemia and obesity. Here, we explored how NAD+ bioavailability controls adipogenic differentiation from hMSC. We found a previously unappreciated repressive role for NAD+ on adipocyte commitment, while a functional NAD+-dependent deacetylase SIRT1 appeared crucial for terminal differentiation of pre-adipocytes. Repressing NAD+ biosynthesis during adipogenesis promoted the adipogenic transcriptional program, while two-photon microscopy and extracellular flux analyses suggest that SIRT1 activity mostly relies on the metabolic switch. Interestingly, SIRT1 controls subcellular compartmentalization of redox metabolism during adipogenesis.

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