Title : Brd4 is required for recovery from antimicrotubule drug-induced mitotic arrest: preservation of acetylated chromatin.

Pub. Date : 2006 Feb

PMID : 16339075






6 Functional Relationships(s)
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1 We found that Brd4 was rapidly released from chromosomes upon treatment with antimicrotubule drugs, including the reversible agent nocodazole. Nocodazole bromodomain containing 4 Homo sapiens
2 Yet, when nocodazole was withdrawn, Brd4 was reloaded onto chromosomes, and cells proceeded to complete cell division. Nocodazole bromodomain containing 4 Homo sapiens
3 Consequently, Brd4+/- cells were impaired in their ability to recover from nocodazole-induced mitotic arrest: a large fraction of +/- cells failed to reach anaphase after drug withdrawal, and those that entered anaphase showed an increased frequency of abnormal chromosomal segregation. Nocodazole bromodomain containing 4 Homo sapiens
4 The reloading defect observed in Brd4+/- cells coincided with selective hypoacetylation of lysine residues on H3 and H4. Lysine bromodomain containing 4 Homo sapiens
5 The histone deacetylase inhibitor trichostatin A increased global histone acetylation and perturbed nocodazole-induced Brd4 unloading. trichostatin A bromodomain containing 4 Homo sapiens
6 The histone deacetylase inhibitor trichostatin A increased global histone acetylation and perturbed nocodazole-induced Brd4 unloading. Nocodazole bromodomain containing 4 Homo sapiens