A G-quadruplex telomere targeting agent produces p16-associated senescence and chromosomal fusions in human prostate cancer cells.

Incles, C.M., Schultes, C.M, Kempski, H., Koehler, H., Kelland, L.R. and Neidle, S. (2004) A G-quadruplex telomere targeting agent produces p16-associated senescence and chromosomal fusions in human prostate cancer cells. Molecular Cancer Therapeutics, 3 (10). pp. 1201-1206.

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Abstract

The trisubstituted acridine derivative BRACO-19 has been designed to interact with and stabilize the quadruplex DNA structures that can be formed by folding of the single-stranded repeats at the 3' end of human telomeres. We suggest that the BRACO-19 complex inhibits the catalytic function of telomerase in human cancer cells and also destabilizes the telomerase-telomere capping complex so that cells enter senescence. Here, we present evidence showing that the inhibition of cell growth caused by BRACO-19 in DU145 prostate cancer cells occurs more rapidly than would be expected solely by the inhibition of the catalytic function of telomerase, and that senescence is accompanied by an initial up-regulation of the cyclin-dependent kinase inhibitor p21, with subsequent increases in p16(INK4a) expression. We also show that treatment with BRACO-19 causes extensive end-to-end chromosomal fusions, consistent with telomere uncapping.

Item Type:Article
Departments, units and centres:Department of Pharmaceutical and Biological Chemistry > Department of Pharmaceutical and Biological Chemistry
ID Code:2746
Journal or Publication Title:Molecular Cancer Therapeutics
Deposited By:Library Staff
Deposited On:20 Jan 2012 16:45
Last Modified:20 Jan 2012 16:46

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