Abstract
Histone H3S10 phosphorylation has been known as a cell cycle-specific marker and has a role in transcriptional activation. Various kinases phosphorylate H3S10 in different species, however, the role of the mitotic serine/threonine protein kinase Aurora A (AURKA) is largely unknown. Here we present evidence that AURKA phosphorylates H3S10 and activates target gene transcription. We show that down-regulation of AURKA level during leukemia cell differentiation results in decreased H3S10 phosphorylation level. We further show that AURKA is recruited to target gene promoters and activates transcription via H3S10 phosphorylation. Furthermore, this recruitment can be disrupted by the AURKA inhibitor Alisertib and results in H3K9-me2 recruitment by G9a.
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