Pyridostatin analogues promote telomere dysfunction and long-term growth inhibition in human cancer cells
作者:Sebastian Müller、Deborah A. Sanders、Marco Di Antonio、Stephanos Matsis、Jean-François Riou、Raphaël Rodriguez、Shankar Balasubramanian
DOI:10.1039/c2ob25830g
日期:——
The synthesis, biophysical and biological evaluation of a series of G-quadruplex interacting small molecules based on a N,N′-bis(quinolinyl)pyridine-2,6-dicarboxamide scaffold is described. The synthetic analogues were evaluated for their ability to stabilize telomeric G-quadruplex DNA, some of which showed very high stabilization potential associated with high selectivity over double-stranded DNA. The compounds exhibited growth arrest of cancer cells with detectable selectivity over normal cells. Long-time growth arrest was accompanied by senescence, where telomeric dysfunction is a predominant mechanism together with the accumulation of restricted DNA damage sites in the genome. Our data emphasize the potential of a senescence-mediated anticancer therapy through the use of G-quadruplex targeting small molecules based on the molecular framework of pyridostatin.
描述了一系列基于N,N′-双(喹啉基)吡啶-2,6-二羧酰胺支架的G-四链体相互作用小分子的合成、生物物理和生物学评估。这些合成的类似物被评估了其稳定端粒G-四链体DNA的能力,其中一些显示出很高的稳定潜力,并对双链DNA表现出很高的选择性。这些化合物在抑制癌细胞生长方面表现出可检测的选择性,且相对于正常细胞具有显著性。长期的生长抑制伴随着细胞衰老,其中端粒功能障碍是主要机制,同时伴有基因组内限制性DNA损伤位点的积累。我们的数据强调了通过使用基于吡啶斯塔丁分子框架的G-四链体靶向小分子,实施衰老介导的抗癌治疗的潜力。