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Journal of Multidisciplinary Applied Natural Science

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Scopus CiteScore 2025

2.1

Calculated on 05 May, 2025

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0.25

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Journal of Multidisciplinary Applied Natural Science

##plugins.themes.gdThemes.general.eIssn##: 2774-3047


Articles https://doi.org/10.47352/jmans.2774-3047.441

OSMAC-Activated Alkaloid Diversity in a Mangrove Aspergillus sp. PLP1-F1 Drives Host-Directed Antibacterial Mechanisms

Fendi Setiawan Wawan A Setiawan Rudy T M Situmeang Yuli Ambarwati Ni Luh Gede Ratna Juliasih Susianti Susianti Peni Ahmadi Masayoshi Arai Andi Setiawan

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Fendi Setiawan

https://orcid.org/0000-0003-1006-5150

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Wawan A Setiawan

https://orcid.org/0000-0002-6448-3959
  • wawan.as@fmipa.unila.ac.id
  • Department of Biology, Lampung University, Bandar Lampung-35145 (Indonesia)
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Rudy T M Situmeang

https://orcid.org/0000-0001-6622-0362
  • rudy.tahan@fmipa.unila.ac.id
  • Department of Chemistry, Lampung University, Bandar Lampung-35145 (Indonesia)
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Yuli Ambarwati

https://orcid.org/0000-0002-6738-709X

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Ni Luh Gede Ratna Juliasih

https://orcid.org/0000-0002-6202-461X

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Susianti Susianti

https://orcid.org/0000-0002-5458-0915
  • susianti.1978@fk.unila.ac.id
  • Department of Pathology, Histology and Anatomy, Lampung University, Bandar Lampung-35145 (Indonesia)
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Peni Ahmadi

https://orcid.org/0000-0003-0865-3420
  • peni.ahmadi@brin.go.id
  • Research Center for Vaccine and Drugs, National Research and Innovation Agency Republic of Indonesia, Cibinong-16911 (Indonesia)
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Masayoshi Arai

https://orcid.org/0000-0003-2771-1948
  • araim@phs.osaka-u.ac.jp
  • Graduate School of Pharmaceutical Sciences, Osaka University, Osaka-5650871 (Japan)
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Andi Setiawan

https://orcid.org/0000-0002-0731-6417
  • andi.setiawan@fmipa.unila.ac.id
  • Department of Chemistry, Lampung University, Bandar Lampung-35145 (Indonesia)
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##plugins.themes.gdThemes.publishedIn##: czerwca 04, 2026

[1]
F. Setiawan, „OSMAC-Activated Alkaloid Diversity in a Mangrove Aspergillus sp. PLP1-F1 Drives Host-Directed Antibacterial Mechanisms”, J. Multidiscip. Appl. Nat. Sci., cze. 2026.

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Abstrakt

The growing threat of multidrug-resistant (MDR) pathogens such as Staphylococcus aureus and Pseudomonas aeruginosa necessitates discovery strategies that move beyond conventional single-target antibiotics. Here, we report a dereplication-guided pipeline applied to the mangrove-derived fungus Aspergillus sp. PLP1-F1, cultivated under an one strain–many compounds (OSMAC) solid-state fermentation using agro-industrial waste substrates to activate cryptic biosynthetic pathways. Molecular networking revealed 24 compounds with diverse chemical structures, including spiro-γ-dilactone, chinulin, anthraquinoline, notoamides, epi-fiscalins, okaramines, aspergillides, and cinatrins. The fungal extract exhibited potent antibacterial against resistant pathogen with a minimum inhibition concentration (MIC) of 250 µg/mL. To support these findings, pharmacokinetic profiling (ADME) identified 13 metabolites with favorable drug-likeness properties. Molecular docking against the bacterial division protein FtsZ highlighted three lead candidates epi-fiscalin C (16) (-8.89 kcal/mol), notoamide A (20) (-9.05 kcal/mol), and notoamide O (21) (-8.52 kcal/mol) with superior binding affinities compared to ciprofloxacin (-8.23 kcal/mol), suggesting interference with bacterial cytokinesis. Protein–protein interaction analyses further demonstrated that these alkaloids modulate host signaling networks, including EGFR–MAPK, PI3K–mTOR, caspase-mediated apoptosis, and matrix metalloproteinases. Functional enrichment additionally implicated IL‑17 signaling and neutrophil extracellular trap formation, pathways central to antibacterial immunity and inflammation control. Notably, FtsZ was not a central hub within the interaction networks, indicating that direct bacterial inhibition likely functions as a supportive mechanism alongside host-directed effects. Collectively this study underscores the value of OSMAC-driven metabolomics and systems pharmacology in accelerating natural product discovery, offering a scalable framework for identifying marine fungal metabolites with complex, resistance-resilient mechanisms of action.

Bibliografia

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