Journal article
A Dereplication and Bioguided Discovery Approach to Reveal New Compounds from a Marine-Derived Fungus Stilbella fimetaria
Department of Biotechnology and Biomedicine, Technical University of Denmark1
Natural Product Discovery, Section for Microbial and Chemical Ecology, Department of Biotechnology and Biomedicine, Technical University of Denmark2
German Cancer Research Center3
Fundación MEDINA4
Department of Chemistry, Technical University of Denmark5
Organic Chemistry, Department of Chemistry, Technical University of Denmark6
Fungal Degradation, Section for Microbial and Chemical Ecology, Department of Biotechnology and Biomedicine, Technical University of Denmark7
Fungal Chemodiversity, Section for Microbial and Chemical Ecology, Department of Biotechnology and Biomedicine, Technical University of Denmark8
A marine-derived Stilbella fimetaria fungal strain was screened for new bioactive compounds based on two different approaches: (i) bio-guided approach using cytotoxicity and antimicrobial bioassays; and (ii) dereplication based approach using liquid chromatography with both diode array detection and high resolution mass spectrometry.
This led to the discovery of several bioactive compound families with different biosynthetic origins, including pimarane-type diterpenoids and hybrid polyketide-non ribosomal peptide derived compounds. Prefractionation before bioassay screening proved to be a great aid in the dereplication process, since separate fractions displaying different bioactivities allowed a quick tentative identification of known antimicrobial compounds and of potential new analogues.
A new pimarane-type diterpene, myrocin F, was discovered in trace amounts and displayed cytotoxicity towards various cancer cell lines. Further media optimization led to increased production followed by the purification and bioactivity screening of several new and known pimarane-type diterpenoids. A known broad-spectrum antifungal compound, ilicicolin H, was purified along with two new analogues, hydroxyl-ilicicolin H and ilicicolin I, and their antifungal activity was evaluated.
Language: | English |
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Publisher: | MDPI |
Year: | 2017 |
Pages: | 253 |
ISSN: | 16603397 |
Types: | Journal article |
DOI: | 10.3390/md15080253 |
ORCIDs: | Kildgaard, Sara , Subko, Karolina , Gotfredsen, Charlotte Held , Andersen, Birgitte , Frisvad, Jens Christian , Nielsen, Kristian Fog and Larsen, Thomas Ostenfeld |
Antifungal Bioguided-discovery Cytotoxicity Dereplication Ilicicolin H MS/HRMS Marine-derived Pimarane-type diterpenoids SDG 14 - Life Below Water SDG 3 - Good Health and Well-being
Antifungal Agents Biological Products Biology (General) Chromatography, High Pressure Liquid Chromatography, Liquid Diterpenes Hypocreales Marine Biology Mass Spectrometry Molecular Structure QH301-705.5 antifungal bioguided-discovery cytotoxicity dereplication ilicicolin H marine-derived pimarane-type diterpenoids