Disubstituted 2-phenyl-benzopyranopyrimidine derivatives as a new type of highly selective ligands for telomeric G-quadruplex DNA
作者:Wei-Bin Wu、Shu-Han Chen、Jin-Qiang Hou、Jia-Heng Tan、Tian-Miao Ou、Shi-Liang Huang、Ding Li、Lian-Quan Gu、Zhi-Shu Huang
DOI:10.1039/c0ob00921k
日期:——
A series of 2-phenyl-benzopyranopyrimidine (PBPP) derivatives with alkylamino side chains were synthesized and found to be a new type of highly selective ligand to bind with telomeric G-quadruplex DNA, and their biological properties were reported for the first time. Their interactions with telomeric G-quadruplex DNA were studied with FRET melting, surface plasmon resonance, CD spectroscopy, and molecular modeling. Our results showed that the disubstituted PBPP derivatives could strongly bind to and effectively stabilize the telomeric G-quadruplex structure, and had significant selectivity for G-quadruplex over duplex DNA. In comparison, the mono substituted derivatives had much less effect on the G-quadruplex, suggesting that the disubstitution of PBPP is essential for its interaction with the G-quadruplex. Furthermore, telomerase inhibition of the PBPP derivatives and their cellular effects were studied, and compound 11b was found to be the most promising compound as a telomerase inhibitor and telomeric G-quadruplex binding ligand for further development for cancer treatment.
合成了一系列具备烷基氨基侧链的2-苯基苊哌啶(PBPP)衍生物,发现它们是一种新型的高度选择性配体,能够与端粒G四链体DNA结合,并首次报道了它们的生物特性。使用FRET熔解、表面等离子体共振、CD光谱学和分子建模研究了它们与端粒G四链体DNA的相互作用。我们的结果显示,二取代的PBPP衍生物可以强力结合并有效稳定端粒G四链体结构,并对G四链体相比于双链DNA具有显著的选择性。相较之下,单取代衍生物对G四链体的影响要小得多,这表明PBPP的双取代对于其与G四链体的相互作用至关重要。此外,还研究了PBPP衍生物对端粒酶的抑制作用及其细胞效应,发现化合物11b是最有前景的端粒酶抑制剂和端粒G四链体结合配体,适合进一步开发用于癌症治疗。