Journal of Tropical Oceanography ›› 2024, Vol. 43 ›› Issue (6): 181-189.doi: 10.11978/2023198CSTR: 32234.14.2023198

• Marine Biology • Previous Articles     Next Articles

Study on the secondary metabolites and hypoglycemic and lipid lowering activities of actinomyces Streptomyces olivaceuss 10127 from the Guangxi mangrove sediments

XIAO Yang1(), YAN Jing1, YANG Shuyu2, ZHANG Tangjie1, WENG Jie1, LI Qilin1, LIU Hongcun2, MENG Juan3, YANG Lifang1()   

  1. 1. Key Laboratory of Chemistry and Engineering of Forest Products, State Ethnic Affairs Commission, Guangxi Key Laboratory of Chemistry and Engineering of Forest Products, Guangxi Collaborative Innovation Center for Chemistry and Engineering of Forest Products, School of Chemistry and Chemical Engineering, Guangxi Minzu University, Nanning 530006, China
    2. Guangxi Key Laboratory of Polysaccharide Materials and Modification, School of Marine Sciences and Biotechnology, Guangxi Minzu University, Nanning 530008, China
    3. College of Preparatory Education, Guangxi Minzu University, Nanning 530008, China
  • Received:2023-12-20 Revised:2024-01-23 Online:2024-11-10 Published:2024-12-05
  • Contact: YANG Lifang
  • 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)

Abstract:

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.

Key words: Streptomyces olivaceuss, secondary metabolites, hypoglycemic activity, lipid-lowering activity

CLC Number: 

  • Q939.9