9-N-substituted berberine derivatives:: Stabilization of G-quadruplex DNA and down-regulation of oncogene c-myc

被引:122
作者
Ma, Yan [1 ]
Ou, Tian-Miao [1 ]
Hou, Jin-Qiang [1 ]
Lu, Yu-Jing [1 ]
Tan, Jia-Heng [1 ]
Gu, Lian-Quan [1 ]
Huang, Zhi-Shu [1 ]
机构
[1] Sun Yat Sen Univ, Sch Pharmaceut Sci, Guangzhou 510006, Guangdong, Peoples R China
关键词
9-N-substituted berberine derivatives; synthesis; c-myc G-quadruplex; down-regulation of transcription;
D O I
10.1016/j.bmc.2008.07.029
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
A series of 9-N-substituted berberine derivatives (2a-j) were synthesized and evaluated as a new class of G-quadruplex binding ligands. G-quadruplex of DNA had been proven to be the transcription controller of human c-myc gene. The interaction of 9-N-substituted berberine derivatives with G-quadruplex DNA in c-myc was examined via EMSA, CD spectroscopy, FRET-melting method, PCR-stop assay, competitive dialysis, cell proliferation assay and RT-PCR assay. The experiment results indicated that these derivatives could selectively induce and stabilize the formation of intramolecular parallel G-quadruplex in c-myc, which led to down-regulation of transcription of the c-myc in the HL60 lymphomas cell line. The related structure-activity relationships were also discussed. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码:7582 / 7591
页数:10
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