Small-molecule-mediated G-quadruplex isolation from human cells.

Small-molecule-mediated G-quadruplex isolation from human cells.
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DOI:
10.1038/nchem.842
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发表时间:
2010-12
期刊:
影响因子:
21.8
通讯作者:
Balasubramanian, Shankar
Balasubramanian, Shankar
中科院分区:
化学1区
文献类型:
--
作者:
Mueller, Sebastian;Kumari, Sunita;Rodriguez, Raphael;Balasubramanian, Shankar

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Nucleic acids containing stretches of tandem guanines can fold into four-stranded structures called G-quadruplexes. The existence of such sequences in genomic DNA suggests the occurrence of these motifs in cells, with potential implications in a number of biological processes relevant to cancer. Small molecules have proven to be valuable tools to dissect cell circuitry. Here, we describe a synthetic small molecule derived from an N,N’-bis(2-quinolinyl)pyridine-2,6-dicarboxamide, which is designed to mediate the selective isolation of G-quadruplex nucleic acids. The methodology was successfully applied to a range of DNA and RNA G-quadruplexes in vitro. We demonstrate the general applicability of the method by isolating telomeric DNA-containing G-quadruplex motifs from cells. We show that telomeres are targets for the probe, providing further evidence of the formation of G-quadruplexes in human cells.
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