Abstract:
:Exploitation of drug-drug synergism and allostery could yield superior therapies by capitalizing on the immensely diverse, but highly specific, potential associated with the biological macromolecular landscape. Here we describe a drug-drug synergy mediated by allosteric cross-talk in chromatin, whereby the binding of one drug alters the activity of the second. We found two unrelated drugs, RAPTA-T and auranofin, that yield a synergistic activity in killing cancer cells, which coincides with a substantially greater number of chromatin adducts formed by one of the compounds when adducts from the other agent are also present. We show that this occurs through an allosteric mechanism within the nucleosome, whereby defined histone adducts of one drug promote reaction of the other drug at a distant, specific histone site. This opens up possibilities for epigenetic targeting and suggests that allosteric modulation in nucleosomes may have biological relevance and potential for therapeutic interventions.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Adhireksan Z,Palermo G,Riedel T,Ma Z,Muhammad R,Rothlisberger U,Dyson PJ,Davey CAdoi
10.1038/ncomms14860subject
Has Abstractpub_date
2017-03-30 00:00:00pages
14860issn
2041-1723pii
ncomms14860journal_volume
8pub_type
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