Potential secondary metabolite from Indonesian Actinobacteria (InaCC A758) against <i>Mycobacterium tuberculosis</i>

Rakhmawatie, Maya and Wibawa, Tri and Lisdiyanti, Puspita and Pratiwi, Woro and Damayanti, Ema and Mustofa, Mustofa (2021) Potential secondary metabolite from Indonesian Actinobacteria (InaCC A758) against <i>Mycobacterium tuberculosis</i>. Iranian Journal of Basic Medical Sciences, 24 (8). pp. 1058-1068.

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Objective(s): This study explored Indonesian Actinobacteria which were isolated from Curcuma zedoaria endophytic microbes and mangrove ecosystem for new antimycobacterial compounds. Materials and Methods: Antimycobacterial activity test was carried out against Mycobacterium tuberculosis H37Rv. Chemical profiling of secondary metabolite using Gas Chromatography-Mass Spectroscopy (GC-MS) and High Resolution-Mass Spectroscopy (HR-MS) was done to the ethyl acetate extract of active strain InaCC A758. Molecular taxonomy analysis based on 16S rRNA gene and biosynthetic gene clusters analysis of polyketide synthase (PKS) and non-ribosomal peptide synthetase (NRPS) from InaCC A758 have been carried out. Bioassay guided isolation of ethyl acetate extract was done, then structural elucidation of active compound was performed using UV-Vis, FT-IR, and NMR spectroscopy methods. Results: The chemical profiling using HR-MS revealed that InaCC A758 has the potential to produce new antimycobacterial compounds. The 16S rRNA gene sequencing showed that InaCC A758 has the closest homology to Streptomyces parvus strain NBRC 14599 (99.64). In addition, InaCC A758 has NRPS gene and related to S. parvulus (92 of similarity), and also PKS gene related to PKS-type borrelidin of S. rochei and S. parvulus (74 of similarity). Two compounds with potential antimycobacterial were predicted as 1) Compound 1, similar to dimethenamid (C12H18ClNO2S; MW 275.0723), with MIC value of 100 µg/ml, and 2) Compound 2, actinomycin D (C62H86N12O16; MW 1254.6285), with MIC value of 0.78 µg/ml. Conclusion: Actinomycin D has been reported to have antimycobacterial activity, however the compound has been predicted to resemble dimethenamid had not been reported to have similar activity.

Item Type: Article
Uncontrolled Keywords: Actinobacteria,Dactinomycin,Dimethenamid,Mass spectrometry,Mycobacterium tuberculosis,Peptide synthases RNA,Ribosomal,16S Streptomyces
Subjects: QV pharmacology
Divisions: Journals > Iranian J Basic Medical Sciences
Depositing User: ijbms ijbms
Date Deposited: 29 Aug 2021 04:47
Last Modified: 29 Aug 2021 04:47
URI: http://eprints.mums.ac.ir/id/eprint/38324

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