Genomics

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The ageing epigenome regulates stem cell fate via mitochondrial-derived vesicles delivery of citrate carrier to lysosomes [CUT&RUN]


ABSTRACT: We report that upon ageing MSC exhibit reduced metabolic rates, with lower lipid biosynthesis and elevated acetyl-CoA levels. However, aged cells display chromatin compaction and histone hypo-acetylation, particularly on enhancers of genes involved in osteogenesis. This is due to the lower levels of citrate carrier, resulting in impaired acetyl-CoA export from mitochondria to the cytosol, which concomitantly affects histone acetylation and osteogenesis. CiC gets degraded in the aged cells via an MVD-lysosomal pathway, which establishes a strong connection between mitochondrial quality control, chromatin and stemness.

ORGANISM(S): Mus musculus

PROVIDER: GSE155714 | GEO | 2021/07/08

REPOSITORIES: GEO

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