The Interaction of Telomere DNA G-Quadruplex with Three bis-Benzyltetrahydroisoquinoline Alkaloids
文献类型：期刊论文
| 作者 | Ji, Xiaohui1; Chen, Jiejun; Sun, Hongxia2; Zhou, Huaxi3; Xiang, Junfeng2; Peng, An1; Tang, Yalin2; Zhao, Changqi1 |
| 刊名 | NUCLEIC ACID THERAPEUTICS
 |
| 出版日期 | 2011-12-01 |
| 卷号 | 21期号:6页码:415-422 |
| ISSN号 | 2159-3337 |
| DOI | 10.1089/nat.2011.0311 |
| 英文摘要 | Telomeres are important multifunctional nucleoprotein structures located at the ends of eukaryotic chromosomes. Telomerase regulates telomere elongation, and its activity is associated with tumorigenesis. Because the activity of telomerase can be inhibited by G-quadruplex (G4) formation (a four-stranded DNA with stacks of G-quartets formed by four guanines in a planar structure), the role of G4 in cancer therapy has attracted many research interests. We studied the effects of three natural alkaloids-tetrandrine, fangchinoline, and berbamine-on the stability and formation of telomere DNA G4 with circular dichroism melting spectroscopy (melting-CD), variable temperature ultraviolet (melting-UV), proton nuclear magnetic resonance spectroscopy ((1)H NMR), and molecular docking, and examined the relationships among the alkaloid structure and their activities. We further investigated their cytotoxicity with the 3-(4,5-dimethylthiazole-2-yl)-2,5-diphenyltetrazolium bromide assay (MTT) and flow cytometry (FCM). The results demonstrated that alkaloids increased G4 stability and induced its formation, which added structure diversity of G4-ligands. The results showed that -OH at R(1), -OCH(3) at R(2), and H at R(3) had higher stability than other substituent groups for these alkaloids. We also found a transition of antiparallel to parallel G4 as the temperature increased. The result indicated the possible advantage of parallel G4 in adversity. In addition, the alkaloids demonstrated a moderate cytotoxicity and proved to be cell cycle blocker in the G(1) phase. These alkaloids have revealed promising potentials to be the agents for antitumor therapy. |
| 语种 | 英语 |
| WOS记录号 | WOS:000298399000007 |
| 出版者 | MARY ANN LIEBERT INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/73941]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhao, Changqi |
| 作者单位 | 1.Beijing Normal Univ, Coll Life Sci, Beijing Key Lab Gene Engn Drugs & Biol Technol, Key Lab Cell Proliferat & Regulat Biol,Minist Edu, Beijing 100875, Peoples R China 2.Chinese Acad Sci, Beijing Natl Lab Mol Sci, State Key Lab Struct Chem Unstable & Stable Speci, Inst Chem, Beijing 100080, Peoples R China 3.Beijing Normal Univ, Sch Management, Dept Syst Sci, Beijing 100875, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ji, Xiaohui,Chen, Jiejun,Sun, Hongxia,et al. The Interaction of Telomere DNA G-Quadruplex with Three bis-Benzyltetrahydroisoquinoline Alkaloids[J]. NUCLEIC ACID THERAPEUTICS,2011,21(6):415-422. |
| APA | Ji, Xiaohui.,Chen, Jiejun.,Sun, Hongxia.,Zhou, Huaxi.,Xiang, Junfeng.,...&Zhao, Changqi.(2011).The Interaction of Telomere DNA G-Quadruplex with Three bis-Benzyltetrahydroisoquinoline Alkaloids.NUCLEIC ACID THERAPEUTICS,21(6),415-422. |
| MLA | Ji, Xiaohui,et al."The Interaction of Telomere DNA G-Quadruplex with Three bis-Benzyltetrahydroisoquinoline Alkaloids".NUCLEIC ACID THERAPEUTICS 21.6(2011):415-422. |
入库方式： OAI收割
来源：化学研究所
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