生物技术通报 ›› 2015, Vol. 31 ›› Issue (8): 132-139.doi: 10.13560/j.cnki.biotech.bull.1985.2015.08.020

• 研究报告 • 上一篇    下一篇

海洋真菌提取物损伤大肠杆菌DNA活性的筛选及活性菌株研究

鲍海燕1, 谷朋娟1, 张翼2, 穆军3, 冯妍2, 赵辰燕1   

  1. 1.大连交通大学环境与化学工程学院,大连 116028; 2.广东海洋大学食品与科技学院 广东省水产品加工与安全重点实验室 水产品深加工广东普通高等学校重点实验室,湛江 524088; 3.浙江海洋学院海洋科学与技术学院,舟山 316022
  • 收稿日期:2014-11-06 出版日期:2015-08-21 发布日期:2015-08-22
  • 作者简介:鲍海燕,女,硕士研究生,研究方向:海洋真菌的生物活性,E-mail:baohaiyanbhy@163.com;谷朋娟同为本文第一作者
  • 基金资助:
    国家自然科学基金项目(20902009),中国博士后科学基金项目(2011M500051,2012T50258),广东省“扬帆计划”引进紧缺拔尖人才项目(201433009),广东海洋大学引进人才科研启动项目(E15155),广东海洋大学创新强校工程项目(GDOU2014030502,GDOU2014050203),广东海洋大学自然科学研究项目(C14519)

Screening the Extracts of Marine Fungi for the Activity of Damaging the DNA of Escherichia coli and Researches on Active Strains

Bao Hanyan1, Gu Pengjuan1, Zhang Yi2, Mu Jun3, Feng Yan2, Zhao Chenyan1   

  1. 1.College of Environmental and Chemical Engineering,Dalian Jiaotong University,Dalian 116028; 2.College of Food Science and Technology of Guangdong Ocean University,Guangdong Provincial Key Laboratory for Processing and Safety of Aquatic Products,Key Laboratory of Further Processing Aquatic Products of Guangdong Higher Education Institutions,Zhanjiang 524088; 3. College of Marine Science and Technology,Zhejiang Ocean University,Zhoushan 316022
  • Received:2014-11-06 Published:2015-08-21 Online:2015-08-22

摘要: 从海洋微生物中筛选抗菌、抗肿瘤物质是海洋药物研究的热点之一,而筛选模型在研究中起着重要作用。建立了可用于抗菌及潜在抗肿瘤活性物质筛选的大肠杆菌差异性DNA修复试验模型,并运用该模型对海洋共附生真菌的提取物进行了筛选。结果显示,5株海洋真菌的提取物具有较强的选择性抑制DNA损伤修复基因缺陷型大肠杆菌的活性,可能具有DNA损伤作用。对这5种活性真菌进行了分子生物学鉴定,而且薄层色谱(TLC)和高效液相色谱(HPLC)-活性追踪显示这些菌株可产生较多样化的活性物质。

关键词: 海洋微生物, 大肠杆菌差异性DNA修复试验模型, 鉴定

Abstract: Screening of antimicrobial and antitumor agents from marine microorganisms is one of the hot spots for the research of marine drugs, and screening models play an important role in the study. The authors set up an Escherichia coli differentiated DNA damage repair test model, which can be used for the screening of antimicrobial and potential antitumor substances. This model was further applied to screen the bioactivities of the extracts of marine symbiotic fungi. As the result, five marine fungal strains’ extracts showed strong selective inhibition to E. coli strains with DNA damage repairing genes-deficiency, i.e, the potential of damaging DNA. The five strains were identified by molecular biological methods. Furthermore, analyses by thin layer chromatography(TLC)and high performance liquid chromatography(HPLC)-bioactivity tracing revealed that these strains produced diverse bioactive substances.

Key words: marine microorganisms, Escherichia coli differentiated DNA damage repair test model, identification