有机化学    

研究论文

可可西里来源链霉菌444的抗真菌活性成分研究

安俊榴a, 徐吉祥b, 庞昆a, 杨信怡b, 孙承航b,c,*, 袁丽杰a,*   

  1. a华北理工大学基础医学院 河北省慢性疾病基础医学重点实验室 唐山市慢性病临床基础研究重点实验室 唐山 063000;
    b中国医学科学院&北京协和医学院医药生物技术研究所 北京 100050;
    c青海大学生态环境工程学院 西宁 810016
  • 收稿日期:2026-06-28 修回日期:2026-08-05 发布日期:2026-09-14
  • 基金资助:
    国家重点研发计划(No. 2024YFC2309300)和河北省自然科学基金项目 (No. H2021209027)及青海省“昆仑英才高端创新创业人才”计划.

Study on the Antifungal Constituents from Hoh Xil-Derived Streptomyces sp. 444

An Junliua, Xu Jixiangb, Pang Kuna, Yang Xinyib, Sun Chenghangb,c,*, Yuan Lijiea,*   

  1. aTangshan Key Laboratory for Preclinical and Basic Research on Chronic Disease, Hebei Key Laboratory for Chronic Diseases, School of Basic Medical Science, North China University of Science and Technology, Tangshan 063000;
    bInstitute of Medicinal Biotechnology, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050;
    cCollege of Eco-Environmental Engineering, Qinghai University, Xining 810016
  • Received:2026-06-28 Revised:2026-08-05 Published:2026-09-14
  • Supported by:
    National Key Research and Development Program of China (No. 2024YFC2309300) and the Natural Science Foundation of Hebei Province (No. H2021209027). The Kunlun Talented People, High-end Innovation and Entrepreneurship Talents Plan of Qinghai Province.

运用DeepSAT预测和活性引导的方法对一株分离自青海可可西里的链霉菌(Streptomyces sp. 444)抗真菌活性成分进行研究,从中发现了两个新的抗霉素类化合物,去甲酰抗霉素A10a (1)、抗霉素A1c (2)和两个已知的抗霉素类化合物,抗霉素A3a (3)、抗霉素A8a (4)。通过高分辨质谱(HR-ESI-MS)、核磁共振技术(NMR)和NMR计算确定了新化合物的结构。微量肉汤稀释法测试表明4个化合物均表现出抗真菌活性,其中化合物2最强,对白色念珠菌Candida albicans ATCC 10231和新型隐球菌Cryptococcus neoformans H99的最低抑菌浓度MIC值分别为4和8 μg/mL。

关键词: 可可西里, 链霉菌, DeepSAT, 抗霉素, 抗真菌

Activity-guided and DeepSAT analyses on the antifungal constituents of Streptomyces sp. 444, isolated from the Hoh Xil region, led to the discovery of two new antimycin analogs, deformyl-antimycin A10a (1) and antimycin A1c (2), along with two known analogs, antimycin A3a (3) and antimycin A8a (4). The structures of these antimycin analogs were elucidated by high-resolution electrospray ionization mass spectroscopy (HR-ESI-MS), nuclear magnetic resonance (NMR), and NMR calculations. Bioassay indicated that compounds 1-4 exhibited antifungal activity. The MIC values of compound 2 against Candida albicans ATCC 10231 and Cryptococcus neoformans H99, determined by the broth microdilution method, were 4 and 8 μg/mL, respectively.

Key words: Hoh Xil, Streptomyces sp., DeepSAT, antimycin, antifungal activity