热带海洋学报

• • 上一篇    下一篇

北部湾软珊瑚共附生真菌Cladosporium colombiae CSGL 10M10次生代谢产物及其心肌保护活性研究

谢婧1, 杨晓堃1, 郝奥林1, 田小雨1, 林秀萍2, 程媛媛1, 张翠仙1

  

  1. 1. 广州中医药大学中药学院, 广东 广州 510006;

    2. 中国科学院南海海洋研究所, 广东 广州 510301



  • 收稿日期:2026-10-04 修回日期:2026-10-16 接受日期:2026-10-22
  • 通讯作者: 张翠仙
  • 基金资助:
    国家自然科学基金项目(82674913); 广东省自然资源厅海洋六大产业项目(GDNRC[2024]25)

Secondary metabolites of the soft coral-derived fungus Cladosporium colombiae CSGL 10M10 from the Beibu Gulf and their cardioprotective activities

XIE Jing1, YANG Xiaokun1, HAO Aolin1, TIAN Xiaoyu1, LIN Xiuping2, CHENG Yuanyuan1, ZHANG Cuixian1    

  1. 1. School of Pharmaceutical Sciences, Guangzhou University of Chinese Medicine, Guangzhou 510006, China;

    2. South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China



  • Received:2026-10-04 Revised:2026-10-16 Accepted:2026-10-22
  • Contact: Zhang, Cui-Xian
  • Supported by:

     National Natural Science Foundation of China (82674913); Special Fund of Guangdong Provincial Department of Natural Resources (GDNRC[2024]25)

摘要: 本文旨在对北部湾软珊瑚共附生真菌Cladosporium colombiae CSGL 10M10的次生代谢产物及其心肌保护活性进行深入研究。采用正相硅胶柱色谱、开放ODS色谱柱和半制备HPLC等多种分离手段对其发酵物的乙酸乙酯与正丁醇部位次生代谢产物进行分离纯化;通过HR-ESI-MS、NMR、旋光及文献比对等方法确定了26个单体化合物,分别为Cyclo(Gly-L-Pro) (1)、Cyclo(L-Pro-L-Phe) (2)、Cyclo(D-Pro-D-Phe) (3)、Brevianamide F (4)、Cyclo(L-Trp-L-Tyr) (5)、Cyclo(L-Leu-L-Tyr) (6)、Cyclo(D-Phe-L-Ser) (7)、Cyclo(L-Leu-L-Val) (8)、Cyclo(L-Ile-L-Val) (9)、Phenylacetamide (10)、Uracil (11)、Genistein (12)、Formononetin (13)、3-Hydroxybutan-2-yl 2-hydroxy-3-phenylpropanoate (14)、4-Hydroxyphenylacetic acid butanediol ester (15)、Crypticin B (16)、Papuline (17)、(2-Hydroxyphenyl) acetic acid methyl ester (18)、Cinnamic acid (19)、4-Methoxyphenylacetic acid (20)、Phenyllactic acid (21)、Protocatechuic acid (22)、2-Methylbenzoic acid (23)、Benzoic acid (24)、Melongenalactone A (25)和棕榈酸(26)。化合物25首次从Cladosporium属分离所得;除化合物2、19外,其余化合物均为首次从Cladosporium colombiae菌株中得到。对其中24个单体化合物在正常心肌细胞(H9c2)和OGD/R诱导的H9c2心肌细胞损伤模型中的活性测试表明,化合物20具有和阳性药(二氮嗪)相当的心肌保护活性。本研究丰富了海洋来源枝孢属(Cladosporium)真菌的次生代谢产物多样性,为后续开发海洋真菌来源的心肌保护先导化合物提供了候选分子和实验依据。

关键词: 软珊瑚共附生真菌Cladosporium colombiae, 含氮化合物, 芳香酚酸, 次生代谢产物, 心肌保护活性

Abstract: This study was conducted to investigate the secondary metabolites and their cardioprotective activities of the soft coral-derived fungus Cladosporium colombiae CSGL 10M10, collected from the Beibu Gulf. The secondary metabolites were isolated and purified by silica gel column chromatography, octadecylsilyl silica (ODS) column chromatography, and semi-preparative high-performance liquid chromatography (HPLC). The structures of the isolated compounds were elucidated on the basis of High Resolution Electrospray Mass Spectrometry (HR-ESI-MS), 1D and 2D Nuclear Magnetic Resonance (NMR) spectroscopy, optical rotatory dispersion(ORD) and literature comparison. A total of 26 compounds were obtained and identified as Cyclo(Gly-L-Pro) (1), Cyclo(L-Pro-L-Phe) (2), Cyclo(D-Pro-D-Phe) (3), Brevianamide F (4), Cyclo(L-Trp-L-Tyr) (5), Cyclo(L-Leu-L-Tyr) (6), Cyclo(D-Phe-L-Ser) (7), Cyclo(L-Leu-L-Val) (8), Cyclo(L-Ile-L-Val) (9), Phenylacetamide (10), Uracil (11), Genistein (12), Formononetin (13), 3-Hydroxybutan-2-yl 2-hydroxy-3-phenylpropanoate (14), 4-Hydroxyphenylacetic acid butanediol ester (15), Crypticin B (16), Papuline (17), (2-Hydroxyphenyl) acetic acid methyl ester (18), Cinnamic acid (19), 4-Methoxyphenylacetic acid (20), Phenyllactic acid (21), Protocatechuic acid (22), 2-Methylbenzoic acid (23), Benzoic acid (24), Melongenalactone A (25), and Hexadecanoic acid (26). Compound 25 was isolated from the genus Cladosporium for the first time. Except for compounds 2 and 19, all other compounds were isolated from the Cladosporium colombiae strain for the first time. Bioactivity assays of the 24 compounds in normal H9c2 cardiomyocytes and the oxygen-glucose deprivation/reoxygenation (OGD/R)-induced H9c2 cardiomyocyte injury model revealed that compound 20 exhibited cardioprotective activity comparable to that of the positive control diazoxide. In summary, this research enriches the structural diversity of secondary metabolites from marine-derived Cladosporium fungus and provides candidate molecules and experimental evidence for the subsequent development of marine fungus-derived cardioprotective lead compounds.

Key words: soft coral-derived fungusCladosporium colombiae, nitrogen-containing compounds, aromatic phenolic acids, secondary metabolites, cardioprotective activity