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Nat Commun. 2013;4:1908. doi: 10.1038/ncomms2921.

Drug-induced histone eviction from open chromatin contributes to the chemotherapeutic effects of doxorubicin.

Author information

1
Division of Cell Biology, The Netherlands Cancer Institute, Plesmanlaan 121, Amsterdam 1066CX, The Netherlands.

Abstract

DNA topoisomerase II inhibitors are a major class of cancer chemotherapeutics, which are thought to eliminate cancer cells by inducing DNA double-strand breaks. Here we identify a novel activity for the anthracycline class of DNA topoisomerase II inhibitors: histone eviction from open chromosomal areas. We show that anthracyclines promote histone eviction irrespective of their ability to induce DNA double-strand breaks. The histone variant H2AX, which is a key component of the DNA damage response, is also evicted by anthracyclines, and H2AX eviction is associated with attenuated DNA repair. Histone eviction deregulates the transcriptome in cancer cells and organs such as the heart, and can drive apoptosis of topoisomerase-negative acute myeloid leukaemia blasts in patients. We define a novel mechanism of action of anthracycline anticancer drugs doxorubicin and daunorubicin on chromatin biology, with important consequences for DNA damage responses, epigenetics, transcription, side effects and cancer therapy.

PMID:
23715267
PMCID:
PMC3674280
DOI:
10.1038/ncomms2921
[Indexed for MEDLINE]
Free PMC Article

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