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- W3169771625 endingPage "105418" @default.
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- W3169771625 abstract "Cystatin B (CSTB) acts as an inhibitor of cysteine proteases of the cathepsin family and loss-of-function mutations result in human brain diseases with a genotype-phenotype correlation. In the most severe case, CSTB-deficiency disrupts brain development, and yet the molecular basis of this mechanism is missing. Here, we establish CSTB as a regulator of chromatin structure during neural stem cell renewal and differentiation. Murine neural precursor cells (NPCs) undergo transient proteolytic cleavage of the N-terminal histone H3 tail by cathepsins B and L upon induction of differentiation into neurons and glia. In contrast, CSTB-deficiency triggers premature H3 tail cleavage in undifferentiated self-renewing NPCs and sustained H3 tail proteolysis in differentiating neural cells. This leads to significant transcriptional changes in NPCs, particularly of nuclear-encoded mitochondrial genes. In turn, these transcriptional alterations impair the enhanced mitochondrial respiration that is induced upon neural stem cell differentiation. Collectively, our findings reveal the basis of epigenetic regulation in the molecular pathogenesis of CSTB deficiency." @default.
- W3169771625 created "2021-06-22" @default.
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- W3169771625 date "2021-08-01" @default.
- W3169771625 modified "2023-10-03" @default.
- W3169771625 title "Cystatin B-deficiency triggers ectopic histone H3 tail cleavage during neurogenesis" @default.
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- W3169771625 doi "https://doi.org/10.1016/j.nbd.2021.105418" @default.
- W3169771625 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/34102276" @default.
- W3169771625 hasPublicationYear "2021" @default.
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