天然产物研究与开发 ›› 2014, Vol. 26 ›› Issue (10): 1624-1627.

• 研究简报 • 上一篇    下一篇

黄山地区红豆杉中产紫杉醇内生真菌的分离和筛选

汪友明1*,马忠友2,胡丰林3,樊美珍3,李增智3   

  1. 1安徽农业大学理学院 合肥 230036;2安徽科技学院生物系 蚌埠 233100;3安徽农业大学微生物防治省重点实验室 合肥 230036
  • 出版日期:2014-10-30 发布日期:2014-10-31

Isolation and Screening of Endophytic Fungi Produing Taxol from Taxus chinensis of Huangshan

WANG You-ming*,MA Zhong-you2,HU Feng-lin3,FAN Mei-zhen3,LI Zeng-zhi3   

  1. 1 School of Science,Anhui Agricultural University,Hefei 230036 ,China; 2 Department of Biology,Anhui Science and Technology University,Bengbu Anhui 233100 ,China; 3 Anhui Provincial Key Laboratory of Microbial Pest Control,Anhui Agricultural University,Hefei 230036 ,China
  • Online:2014-10-30 Published:2014-10-31

摘要: 从黄山地区红豆杉中分离得到107株内生真菌,利用薄层层析(TLC)方法对107株内生真菌的发酵代谢物进行了初筛,首次筛出8株可产紫杉醇或其类似物的菌株。再通过高效液相色谱(HPLC)对其作了进一步分析,发现有1株内生真菌菌株发酵代谢物的吸收峰与紫杉醇标准品吸收峰保留时间一致。同时结合以中国仓鼠卵巢CHO细胞株作为肿瘤细胞模型,用Resazurin法检测生长抑制率,对经筛选出的1株内生真菌次生代谢产物进行体外抗肿瘤活性试验,该菌株的代谢物对CHO细胞的抑制率高达71.28%。通过对该菌株的显微形态观察,从菌丝、孢子的形态和产孢子的特征等初步判定HQ-24是曲霉(Aspergillus sp.)。

关键词: 内生真菌, 紫杉醇, 肿瘤细胞模型, 分离鉴定

Abstract: One hundred and seven strains of endophytic fungi were isolated from the stem,branch,leaves and bark of root of Chinese yew, T. chinensis of Anhui province.8 endopytic fungi strains which might produce Taxol or its analogues were obtained by preniminary TCL test of the extracts from the fermentation broth of the 107 isolates.The extracts of 8 strains endophytic fungi were further analysed by HPLC,the result showed that HQ-24 strain produced taxol.Screening with CHOcytotoxicity model revealed that HQ-24 strain had relative strong antitumor activity.The extract with antitumor activity from that strain reached the rate of 71.28%.According to morphological characteristics,including hyphae,conidiophores,conidiogenous cells,conidia etc.,HQ-24,the taxol-producing fungus was identified as Penicillium sp.

Key words: endophytic fungi, taxol, tumor cell model, isolated and identified

中图分类号: 

R284.2