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中国科学院大学学报 ›› 2019, Vol. 36 ›› Issue (1): 38-47.DOI: 10.7523/j.issn.2095-6134.2019.01.007

• 化学 • 上一篇    下一篇

偶氮苯修饰的DNA对引物延伸的光调控

季禾茗1, 孔德佳3, 莫蒙武2, 雷华军3, 陈露1, 赵瑞琪2, 王威2, 何裕建2, 封禄田1, 吴丽2   

  1. 1. 沈阳化工大学应用化学学院, 沈阳 11014;
    2. 中国科学院大学化学科学学院, 北京 100049;
    3. 江西科技师范大学药学院, 南昌 330013
  • 收稿日期:2017-11-17 修回日期:2018-03-06 发布日期:2019-01-15
  • 通讯作者: 封禄田,E-mail:fenglutian@126.com;吴丽,E-mail:wuli@ucas.ac.cn
  • 基金资助:
    国家自然科学基金(21778054,51772289)、国家重点研究发展计划(2016YFF0203703)、校部青年教师科研启动基金(Y55103HY00)、中国科学院大学大学生创新实践训练计划(118900EA12)、北京大学天然药物及仿生药物国家重点实验室开放课题(K20150204)资助

Photoregulating primer extension using azobenzene linked DNA template

JI Heming1, KONG Dejia3, MO Mengwu2, LEI Huajun3, CHEN Lu1, ZHAO Ruiqi2, WANG Wei2, HE Yujian2, FENG Lutian1, WU Li2   

  1. 1. College of Applied Chemistry, Shenyang University of Chemical Technology, Shenyang 11014;
    2. College of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
    3. College of Pharmacy, Jiangxi Science and Technology Normal University, Nanchang 330013, China
  • Received:2017-11-17 Revised:2018-03-06 Published:2019-01-15

摘要: 研究偶氮苯单元修饰在核酸上控制引物延伸的行为。系统地筛选5、6、7和8个碱基的保护链通过4,4'-二羟甲基偶氮苯连接的25 mer DNA模板,并研究其在紫外光照前后调控的引物延伸效率。结果表明,具有7个保护碱基的C3对Pri.15和6个碱基短链的C2对Pri.17都具有较好的光调控延伸效果。其中C3,在Vent酶作用下紫外光照后引物延伸效率增加1倍以上。而C2,尽管紫外光照前增加了引物延伸的背景,在Vent酶催化下紫外光照射后的延伸产率达到91.4%,比紫外光照前增加84%。本工作为分子水平上研究基因功能、基因表达网络以及疾病的发生和发展提供了一种新的策略和研究手段。

关键词: 核酸, 偶氮苯, 光调控, 引物延伸

Abstract: It has been a hot topic in recent years to carry out a series of life activities by artificial reversible manipulation of specific gene expression. In this work, the photocontrol of primer extension directed by azobenzene modified DNA templates was investigated. DNA templates attached by protective ODNs with 5, 6, 7, and 8 complementary bases through 4,4'-bis(hydroxymethyl) azobenzene were systematically evaluated in photoregulation of the primer extension without or with UV irradiation. The results showed high efficiencies of C3 with 7 protected bases and C2 with 6-base short chains for photoregulating Pri.15 and Pri.17, respectively. Especially, for C3, when catalyzed by Vent DNA polymerase, primer extension efficiency had one-fold increase upon UV irradiation. Similarly, for C2, the extension efficiency reached 91.4% with UV irradiation and achived 84% increase, compared to that without UV irradiation, although the background of primer extension in the dark was a little high. This work provides a new strategy or means for studying the gene function and gene expression network and for exploring the occurrence and development of disease at the molecular level.

Key words: nucleic acid, azobenzene, photoregulation, primer extension

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