Genome-wide analysis of a G-quadruplex-specific single-chain antibody that regulates gene expression.

Genome-wide analysis of a G-quadruplex-specific single-chain antibody that regulates gene expression.
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DOI:
10.1093/nar/gkp740
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发表时间:
2009-11
影响因子:
14.9
通讯作者:
Balasubramanian S
Balasubramanian S
中科院分区:
生物学2区
文献类型:
--
作者:
Fernando H;Sewitz S;Darot J;Tavaré S;Huppert JL;Balasubramanian S

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G-quadruplex nucleic acids have been proposed to play a role in a number of fundamental biological processes that include transcription and translation. We have developed a single-chain antibody that is selective for G-quadruplex DNA over double-stranded DNA, and here show that when it is expressed in human cells, it significantly affects the expression of a wide variety of genes, in a manner that correlates with the presence of predicted G-quadruplexes. We observe cases where gene expression is increased or decreased, and that there are apparent interactions with G-quadruplex motifs at the beginning and end of the genes, and on either strand. The outcomes of this genome-wide study demonstrate that G-quadruplex recognition by the antibody has physiological consequences, and provides insights into some of the complexity associated with G-quadruplex-based regulation.
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