Journal of Tropical Oceanography >
Secondary metabolites from the sponge-derived fungus Penicillium sp. G5A-11
Copy editor: YIN Bo
Received date: 2024-04-03
Revised date: 2024-05-21
Online published: 2024-05-27
Supported by
National Natural Science Foundation of China(41776093)
Financial Fund of the Ministry of Agriculture and Rural Affairs, P. R. of China(NFZX2021)
Project of Postgraduate Teaching Platform in Hunan Province(Xiang Jiao Tong [2019]370)
This paper investigated the chemical constituents of Penicillium sp. G5A-11, which was isolated from a sponge in the South China Sea, and their cytotoxicity. Various separation methods, including thin layer chromatography, silica gel column chromatography, gel column chromatography, and semi-preparative high-performance liquid chromatography, were used to isolate compounds from solid-rice culture of this marine derived fungus. Spectroscopic data, along with physical and chemical properties, were utilized to identify the structures of the isolated compounds, and compared with literature data. Their cytotoxic activities were tested by the MTT (methylthiazolyldiphenyl-tetrazolium bromide) method. Seventeen compounds were identified from the marine fungus Penicillium jiangxiense, including N-acetyltryptamine (1), methyl 2-(6-hydroxybenzothiazol-4-yl) acetate (2), R-mevalonolactone (3), nicotinic acid (4), altechromone A (5), 2, 5-dimethy-7-hydroxychromone (6), methyl 7-hydroxy-2-methylchromone-5-carboxylate (7), stagonoculiepine [(2S, 5R)-1-formyl-1, 2, 3, 4-tetrahydro-5H-2, 5-epiminobenzo[b]azepin-5-yl acetates] (8), (4R, 5S)-5-(hydroxymethyl)-5-methyl-4-(3-oxobutyl) dihydrofuran-2(3H)-one (9), 9α-hydroxy-1, 2, 3, 4, 5, 10, 19-heptanorergosta-7, 22-diene-6, 9-lact (10), 3β, 5α, 9α-trihydroxy-(22E, 24R)-ergosta-7, 22-dien-6-one (11), ergosterol peroxide (5α, 8α-epidioxy-24(R)-methylcholesta-6, 22-dien-3β-ol) (12), (22E, 24R)-24-methylcholesta-2, 22-diene-3β, 5α, 6β-triol (13), ergosterol (14), stigmasterol/β-sitosterol (15), 3β, 5α-dihydroxy-(22E, 24R)-ergosta-7, 22-dien-6-one (16), and 3β, 5α-dihydroxy-6β-methoxyergosta-7, 22-diene (17). Among them, compounds 7 and 9 were new natural products. Cytotoxic activity tests showed that compound 10 was moderately cytotoxic to human chronic myeloid leukemia cells (K562) and human gastric cancer cells (SGC-7901) with IC50 values of (12.07 ± 0.12) μmol·L-1 and (13.17 ± 0.02) μmol·L-1, respectively. However, the results of the anti-inflammatory activity test revealed that none of the compounds exhibited anti-inflammatory activity.
Key words: marine fungus; Penicillium sp.; chemical constituent; cytotoxicity
LIANG Xuecheng , CHANG Wenjun , DAI Haofu , ZHOU Lihua , ZENG Yanbo . Secondary metabolites from the sponge-derived fungus Penicillium sp. G5A-11[J]. Journal of Tropical Oceanography, 2025 , 44(2) : 73 -83 . DOI: 10.11978/2024075
表1 化合物10和14对于5种肿瘤细胞的细胞毒活性测试结果Tab. 1 The cytotoxic activities of compounds 10 and 14 on five tumor cells |
化合物 | (IC50 ± SD)/(μmol·L-1)a | ||||
---|---|---|---|---|---|
K562 | BEL-7402 | SGC-7901 | A549 | Hela | |
10 | 12.07 ± 0.12 | 15.81 ± 0.26 | 13.17 ± 0.02 | 14.59 ± 0.03 | 20.92 ± 0.06 |
14 | 23.77 ± 0.22 | 23.20 ± 0.16 | 22.71 ± 0.11 | 44.01 ± 0.18 | 42.72 ± 0.52 |
顺铂b | 3.08 ± 0.05 | 4.02 ± 0.06 | 4.11 ± 0.02 | 1.93 ± 0.02 | 11.29 ± 0.15 |
注: a: 3次平行试验的平均值; b: 阳性对照 |
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