天然产物研究与开发 ›› 2018, Vol. 30 ›› Issue (8): 1371-1375.doi: 10.16333/j.1001-6880.2018.8.014

• 研究简报 • 上一篇    下一篇

蛇足石杉内生真菌FS4次级代谢产物的研究

童志武1#,梁海林2#,张志斌1,汪涯2,颜日明1*,朱笃1,2    

  1. 1江西师范大学生命科学学院 江西省亚热带植物资源保护与利用重点实验室,南昌 330022;2江西科技师范大学生命科学学院 江西省生物加工过程重点实验室,南昌 330013
  • 出版日期:2018-09-04 发布日期:2018-09-04
  • 基金资助:

    国家自然科学基金(81760649,31300051);江西省自然科学基金(20171BAB204009);江西省教育厅科技项目(GJJ161624)

     

Secondary Metabolites of An Endophytic Fungus FS4 Obtained from Huperzia serrata

TONG Zhi-wu1 #,LIANG Hai-lin 2 #,ZHANG Zhi-bin1,WANG Ya2,YAN Ri-ming1*,ZHU Du1,2   

  1. 1Key Laboratory of Protection and Utilization of Subtropic Plant Resources of Jiangxi Province,Jiangxi Normal University,Nanchang 330022,China; 2Key Lab of Bioprocess Engineering of Jiangxi Province,College of life sciences,Jiangxi Science and Technology Normal University,Nanchang 330013,China
  • Online:2018-09-04 Published:2018-09-04

摘要: 以蛇足石杉(Huperzia serrata(Thunb.)Trev.)茎部来源的一株内生真菌FS4为研究对象,分别进行了分离鉴定,抑制乙酰胆碱酯酶活性试验和次级代谢产物研究。通过形态观察和18S rRNA 基因序列分析,菌株FS4初步确定为烟曲霉(Aspergillus fumigatus)。抑制乙酰胆碱酯酶试验结果表明,菌株FS4菌体的提取物具有很强抑制乙酰胆碱酯酶生物活性,在样品浓度为2 mg/mL时, 抑制率为84.6%。通过对菌株FS4次级代谢产物的研究,共得到5个单体化合物(1~5),采用LC-MS、NMR等现代波谱学技术鉴定出化合物的结构分别为:麦角甾醇(1),邻苯二甲酸二辛酯(2),1′-9-12-亚油酸-2′-3′-二羟基丙酯(3),Microsphaerone C(4),烟曲霉酸(5)。其中化合物3,4和5为首次发现具有乙酰胆碱酯酶抑制活性,在0.2 mg/mL的浓度下,其乙酰胆碱酯酶抑制率分别为73.5%,84.1%和77.6%,IC50值为分别为0.057、0.038、0.05 mg/mL。

关键词: 蛇足石杉, 烟曲霉, 乙酰胆碱酯酶, 抑制率

Abstract: In this study,we identified an endophytic fungus FS4 which was isolated from the stem of Huperzia serrate and investigated the inhibitory activity on acetylcholinesterase of its main metabolites.On the basis of morphological character and 18S rRNA gene sequences analysis,strain FS4 was classified as Aspergillus fumigatus and its extract showed significant inhibitory activity of acetylcholinesterase with inhibition rate of 84.6% at the concentration of 2 mg/mL.Furthermore,we isolated and identified five compounds which were Ergosterin (1),dioctyl phthalate (2),1′-9-12 linoleic acid-2′-3′-dihyodr-oxy propyl ester (3),microsphaerone C (4) and helvolic acid (5) respectively by employing silica column chromatography,LC-MS and NMR methods.Compounds 3,4 and 5 showed inhibitory activity of acetylcholinesterase,the inhibition rates were 73.5%,84.1% and 77.6% respectively and the IC50 values were 0.057,0.038 and 0.05 mg/mL correspondently.

Key words: Huperzia serrata, Aspergillus fumigatus, acetylcholinesterase;inhibition

中图分类号: 

R9