天然产物研究与开发 ›› 2024, Vol. 36 ›› Issue (增刊2): 37-42.

• 研究简报 • 上一篇    下一篇

马铃薯疮痂病原菌菌株Streptomyces bobili K6代谢产物研究

何   伟1,刘晓禄2,3,罗文芳1,周军辉1,侯新强2,郭   瑞1,4,许建军1*,宋素琴1,2*   

  1. 1新疆农业科学院植物保护研究所 农业农村部西北荒漠作物有害生物综合治理重点实验室/新疆农业生物安全重点实验室;2新疆农业科学院微生物应用研究所 新疆特殊环境微生物重点实验室,乌鲁木齐 830091;3天康制药股份有限公司,乌鲁木齐 830011;4新疆农业大学农学院,乌鲁木齐 830052
  • 出版日期:2024-12-09 发布日期:2024-12-09
  • 基金资助:
    新疆农业科学院科技创新重点培育专项(Xjkcpy-202203)

Study on the metabolites of the potato scab pathogen strain Streptomyces bobili K6 from Xinjiang 

HE Wei1,LIU Xiao-lu2,3,LUO Wen-fang1,ZHOU Jun-hui1,HOU Xin-qiang2,GUO Rui1,4,XU Jian-jun1*,SONG Su-qin1,2*   

  1. 1Key Laboratory of Integrated Management of Harmful Crop Vermin of China North-Western Oasis,Ministry of Agriculture and Rural Affairs/ Xinjiang Key Laboratory of Agricultural Biosafety,Research Institute of Plant Protection, Xinjiang Academy of Agricultural Sciences; 2Xinjiang Key Laboratory of Special Environmental Microorganisms, Institute of Microbiology Application,Xinjiang Academy of Agricultural Sciences,Urumqi 830091,China; 3Tiankang Pharmaceutical Co.,Ltd.,Urumqi 830011,China; 4College of Agriculture,Xinjiang Agricultural University,Urumqi 830052,China
  • Online:2024-12-09 Published:2024-12-09

摘要:

研究采用硅胶柱层析和制备型HPLC等方法,对新疆马铃薯疮痂病原菌Streptomyces bobili K6菌株的次级代谢产物进行分离。从菌株 K6的发酵液中共分离得到5个单体化合物,通过其质谱数据和波谱数据鉴定为对甲氧基苯甲酸(1)、N-acetylhomocysteine thiolactone(2)、1-(1H-indol-5-yl)ethanone(3)、phenazine-1-carboxamide(4)和4-deoxy-ε-pyrromycinone(5),其中化合物3作为天然产物首次报道。化合物4具有较好的抗表皮葡萄球菌活性,其最小抑菌浓度(minimal inhibitory concentration,MIC)值为12.5 μg/mL,化合物5具有抗白色念珠菌的活性,MIC值为25 μg/mL。化合物5对HCT-116结肠癌细胞和2316乳腺癌细胞增殖具有一定的抑制活性,抑制率分别为88.63%和80.96%。本研究为进一步开发链霉菌产生的新的杀菌剂和抗癌药物提供依据。

关键词: 疮痂链霉菌, 代谢产物, 抗菌活性, 抗肿瘤活性

Abstract:

The secondary metabolites of Streptomyces bobili K6,a pathogen of potato scab in Xinjiang,were isolated by silica gel column chromatography and preparative HPLC. The fermentation broth of strain K6 yielded five monoterpene compounds,which were identified as p-methoxybenzoic acid (1),N-acetylhomocysteine thiolactone (2),1-(1H-indol-5-yl)ethanone (3),phenazine-1-carboxamide (4),and 4-deoxy-ε-pyrromycinone (5) through mass spectrometry and spectroscopy analysis. Notably,compound 3 was reported here for the first time as a natural product. Antibacterial assays revealed that compound 4 exhibited potent activity against Staphylococcus epidermidis,with a minimum inhibitory concentration(MIC) of 12.5 μg/mL. Furthermore,compound 5 demonstrated antifungal activity against Candida albicans,with an MIC value of 25 μg/mL. In terms of antitumor effects,compound 5 displayed moderate inhibition on the proliferation of HCT-116 colon cancer cells and MDA-MB-231 breast cancer cells,resulting in inhibition rates of 88.63% and 80.96%,respectively. This study lays the foundation for further development of novel antibacterial agents and anticancer drugs derived from Streptomyces.

Key words: Streptomyces bobili, metabolites, antibacterial activity, antitumor activity

中图分类号:  疮痂链霉菌 代谢产物 抗菌活性 抗肿瘤活性