Novel DNA binding agents against topoisomerases are needed for effective treatment of cancers. A series of new acridine-based derivatives 7a-7d were synthesized and their antiproliferative activity against K562 and He...Novel DNA binding agents against topoisomerases are needed for effective treatment of cancers. A series of new acridine-based derivatives 7a-7d were synthesized and their antiproliferative activity against K562 and HepG-2 cell lines were evaluated. Compound 7c with pyridin-2-yl-methanamino group substituted at the C9 position of acridine showed good antitumor activity against both cell lines. The DNA-binding affinity of compound 7c was evaluated by UV-vis absorption spectra and fluorescence emission spectra. DNA topoisomerase I mediated relaxation of plasmid pBR322 DNA was also tested. Our results suggested that compound 7c with good antitumor activity and topoisomerase I inhibition activity can be developed as a prime candidate for further chemical optimization.展开更多
基金the Ministry of Science and Technology of the People’s Republic of China(Nos.2012AA020305and 2011DFA30620)the National Natural Science Foundation of China(Nos.21272134 and 21372141)Shenzhen Sci.&Tech.Bureau(No.JCYJ20120831165730905)for the financial supports
文摘Novel DNA binding agents against topoisomerases are needed for effective treatment of cancers. A series of new acridine-based derivatives 7a-7d were synthesized and their antiproliferative activity against K562 and HepG-2 cell lines were evaluated. Compound 7c with pyridin-2-yl-methanamino group substituted at the C9 position of acridine showed good antitumor activity against both cell lines. The DNA-binding affinity of compound 7c was evaluated by UV-vis absorption spectra and fluorescence emission spectra. DNA topoisomerase I mediated relaxation of plasmid pBR322 DNA was also tested. Our results suggested that compound 7c with good antitumor activity and topoisomerase I inhibition activity can be developed as a prime candidate for further chemical optimization.
