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Review
. 2009 Dec;9(12):849-61.
doi: 10.1038/nrc2733. Epub 2009 Nov 12.

The role of supercoiling in transcriptional control of MYC and its importance in molecular therapeutics

Tracy A Brooks  1 , Laurence H Hurley
Affiliations
Review

The role of supercoiling in transcriptional control of MYC and its importance in molecular therapeutics

Tracy A Brooks et al. Nat Rev Cancer. 2009 Dec.

Abstract

MYC is deregulated in most tumour types, but an effective means to selectively target its aberrant expression is not yet available. Supercoiling that is induced by transcription has been demonstrated to have dynamic effects on DNA in the MYC promoter element: it converts duplex DNA to non-duplex DNA structures, even at considerable distances from the transcriptional start site. These non-duplex DNA structures, which control both turning on and off of transcription and the rate of transcription firing, are amenable to small-molecule targeting. This dynamic system provides a unique opportunity for the treatment of tumours in which MYC is an important oncogene.

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