Journal of Tropical Oceanography >
Study on the secondary metabolites and hypoglycemic and lipid lowering activities of actinomyces Streptomyces olivaceuss 10127 from the Guangxi mangrove sediments
Editor: LIN Qiang
Received date: 2023-12-20
Revised date: 2024-01-23
Online published: 2024-01-29
Supported by
National Natural Science Foundation of China(81960164)
Guangxi Major Science and Technology Project(AB21196020)
2023 Research Project of Guangxi Minority Preparatory Education Base(YJJDA202301)
Mangrove has a special ecological environment and abundant actinomycetes resources, which is one of the sources of natural active substances. To obtain compounds with potent biological activity, this study was conducted on the secondary metabolites and hypoglycemic and lipid lowering activities of an actinomyces, Streptomyces olivaceuss 10127. The strain was derived from the rhizosphere soil of mangrove Acanthus ilicifolius L. in Guangxi. The strains were identified by PCR amplification and 16S rRNA gene sequencing, and the secondary metabolites of this strain were isolated by silica gel column, high performance liquid chromatography (HPLC) and semi-preparative liquid chromatography. The structures of monomer compounds were identified using nuclear magnetic resonance (NMR), mass spectra (MS) and optical rotatory dispersion (ORD). The hypoglycemic and lipid-lowering activity of the compound was tested by the kit. From the secondary metabolites of Streptomyces olivaceuss 10127, 12 compounds were isolated. These include (6-(3-methylbut-2-enyl)-H-indol-3-yl) methanethiol (1), methyl indole-3-acetate (2), methyl 4-hydroxyphenylacetate (3), 2-hydroxybenzamide (4), germicidin B (5), germicidin A (6), isogermicidin A (7), 4′-hydroxy-5, 7-dimethoxy-6-(3-methyl-2-butenyl)-isoflavone (8), 2, 3-dihydroxybenzoic acid (9), phenyl acetic acid (10), germicidin N (11), piloquinonea (12). Compounds 8 and 12 were isolated from this actinomyces for the first time. The hypoglycemic and lipid-lowering activity of the isolated compounds were assayed for the first time. Compound 1 showed a good effect on lipid reduction. Compound 7 showed both the lipid lowering effect and the glucose lowering effect, surpassing the efficacy of the positive control group. The actinomyces Streptomyces olivaceuss 10127 has potential research value in producing lead compounds with hypoglycemic and lipid lowering activities.
XIAO Yang , YAN Jing , YANG Shuyu , ZHANG Tangjie , WENG Jie , LI Qilin , LIU Hongcun , MENG Juan , YANG Lifang . Study on the secondary metabolites and hypoglycemic and lipid lowering activities of actinomyces Streptomyces olivaceuss 10127 from the Guangxi mangrove sediments[J]. Journal of Tropical Oceanography, 2024 , 43(6) : 181 -189 . DOI: 10.11978/2023198
表1 化合物1和7的降TG作用Tab. 1 TG-lowering activity of compounds 1 and 7 |
样品 | TG含量/(mmol·L-1) | ||||
---|---|---|---|---|---|
正常 | 模型 | 高 | 中 | 低 | |
化合物1 | 0.06±0.01** | 0.43±0.01## | 0.13±0.01** | 0.28±0.01** | 0.40±0.01** |
化合物7 | 0.04±0.00** | 0.43±0.01## | 0.21±0.01** | 0.23±0.01** | 0.26±0.01** |
阳性药 | 0.05±0.02** | 0.43±0.01## | - | - | 0.26±0.01** |
注: 与正常组相比, #P<0.05, ##P<0.01; 与模型组相比, *P<0.05, **P<0.01 |
表2 化合物1和7的降脂率和EC50值Tab. 2 Lipid-lowering rate and EC50 value of compounds 1 and 7 |
样品 | 降脂率/% | EC50±SD/(μmol·L-1) | ||
---|---|---|---|---|
高 | 中 | 低 | ||
化合物1 | 68.93±1.68 | 36.41±2.06 | 6.80±1.68 | 68.02±1.83 |
化合物7 | 49.50±1.71 | 46.53±1.71 | 39.60±2.97 | 90.22±15.27 |
阳性药 | - | - | 39.53±2.32 | 46.88±2.23 |
表3 化合物7的降糖活性Tab. 3 Glucose-lowering activity of compound 7 |
组别 | 葡萄糖消耗量/(mmol·L-1) |
---|---|
正常 | 1.34±0.15** |
模型 | 1.87±0.09## |
阳性 | 2.19±0.02** |
化合物7 | 2.25±0.04** |
注: 与正常组相比, #P<0.05, ##P<0.01; 与模型组相比, *P<0.05, **P<0.01。 |
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