Proteomics

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Waves of sumoylation support transcription dynamics during adipocyte differentiation

ABSTRACT: Tight control of gene expression networks involved in adipose tissue formation and plasticity is required to adapt to energy needs and environmental cues. However, little is known about the mechanisms that orchestrate the dramatic transcriptional changes leading to adipocyte differentiation. We investigated the regulation of nascent transcription by SUMO during adipocyte differentiation using SLAMseq and ChIPseq. We discovered that SUMO has a dual function in differentiation; it supports the initial downregulation of pre-adipocyte-specific genes, while it promotes the establishment of the mature adipocyte transcriptional program. By characterizing SUMOylome dynamics in differentiating adipocytes by mass spectrometry, we found that SUMOylation of specific transcription factors like PPARG/RXR and chromatin modifiers promotes the transcription of adipogenic genes. Our data demonstrate that the sumoylation pathway helps coordinates the rewiring of transcriptional networks required for formation of functional adipocytes.

INSTRUMENT(S): Q Exactive HF-X

ORGANISM(S): Mus Musculus (mouse)

TISSUE(S): Preadipocyte, Adipose Tissue

SUBMITTER: Ivo Hendriks  

LAB HEAD: Michael Lund Nielsen

PROVIDER: PXD024144 | Pride | 2022-02-18

REPOSITORIES: Pride

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Tight control of gene expression networks required for adipose tissue formation and plasticity is essential for adaptation to energy needs and environmental cues. However, the mechanisms that orchestrate the global and dramatic transcriptional changes leading to adipocyte differentiation remain to be fully unraveled. We investigated the regulation of nascent transcription by the sumoylation pathway during adipocyte differentiation using SLAMseq and ChIPseq. We discovered that the sumoylation pat  ...[more]

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