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Elnaggar MS, Elissawy AM, Youssef FS, Kicsák M, Kurtán T, Singab ANB, Kalscheuer R. Austalide derivative from marine-derived Aspergillus sp. and evaluation of its cytotoxic and ADME/TOPKAT properties. RSC Adv 2023; 13:16480-16487. [PMID: 37274397 PMCID: PMC10233426 DOI: 10.1039/d3ra02632a] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2023] [Accepted: 05/22/2023] [Indexed: 06/06/2023] Open
Abstract
In-depth chemical investigation of an ethyl acetate extract of Aspergillus sp. isolated from the soft coral Sinularia species resulted in the isolation of one new meroterpenoid, austalide Z (1), one known austalide W (2), six known prenylated indole diketopiperazine alkaloids (3-8), and phthalic acid and its ethyl derivative (9-10). The structures were established by means of 1D and 2D NMR (one- and two-dimensional nuclear magnetic resonance) experiments supported by UV analysis and ESI-MS (electrospray ionization mass spectrometry). In vitro cytotoxic evaluation was performed against the Caco-2 cancer cell line using the MTT assay, which showed that the examined compounds had weak to moderate activities, with the new meroterpenoid austalide Z (1) displaying an IC50 value of 51.6 μg mL-1. ADME/TOPKAT (absorption, distribution, metabolism, excretion, and toxicity) predication performed in silico showed that most of the isolated compounds possessed reasonable pharmacokinetic, pharmacodynamic, and toxicity properties. Thus, it can be concluded that Aspergillus sp. could act as a source of drug leads for cancer prevention with promising pharmacokinetic and pharmacodynamic properties and thus could be incorporated in pharmaceutical dosage forms.
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Affiliation(s)
- Mohamed S Elnaggar
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University Abbassia 11566 Cairo Egypt
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-Universität Düsseldorf 40225 Germany
| | - Ahmed M Elissawy
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University Abbassia 11566 Cairo Egypt
- Center of Drug Discovery Research and Development, Ain Shams University Abbassia 11566 Cairo Egypt
| | - Fadia S Youssef
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University Abbassia 11566 Cairo Egypt
| | - Máté Kicsák
- Department of Organic Chemistry, University of Debrecen Debrecen 4032 Hungary
| | - Tibor Kurtán
- Department of Organic Chemistry, University of Debrecen Debrecen 4032 Hungary
| | - Abdel Nasser B Singab
- Department of Pharmacognosy, Faculty of Pharmacy, Ain Shams University Abbassia 11566 Cairo Egypt
- Center of Drug Discovery Research and Development, Ain Shams University Abbassia 11566 Cairo Egypt
| | - Rainer Kalscheuer
- Institute of Pharmaceutical Biology and Biotechnology, Heinrich-Heine-Universität Düsseldorf 40225 Germany
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Maimone NM, Junior MCP, de Oliveira LFP, Rojas-Villalta D, de Lira SP, Barrientos L, Núñez-Montero K. Metabologenomics analysis of Pseudomonas sp. So3.2b, an Antarctic strain with bioactivity against Rhizoctonia solani. Front Microbiol 2023; 14:1187321. [PMID: 37213498 PMCID: PMC10192879 DOI: 10.3389/fmicb.2023.1187321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Accepted: 04/06/2023] [Indexed: 05/23/2023] Open
Abstract
Introduction Phytopathogenic fungi are a considerable concern for agriculture, as they can threaten the productivity of several crops worldwide. Meanwhile, natural microbial products are acknowledged to play an important role in modern agriculture as they comprehend a safer alternative to synthetic pesticides. Bacterial strains from underexplored environments are a promising source of bioactive metabolites. Methods We applied the OSMAC (One Strain, Many Compounds) cultivation approach, in vitro bioassays, and metabolo-genomics analyses to investigate the biochemical potential of Pseudomonas sp. So3.2b, a strain isolated from Antarctica. Crude extracts from OSMAC were analyzed through HPLC-QTOF-MS/MS, molecular networking, and annotation. The antifungal potential of the extracts was confirmed against Rhizoctonia solani strains. Moreover, the whole-genome sequence was studied for biosynthetic gene clusters (BGCs) identification and phylogenetic comparison. Results and Discussion Molecular networking revealed that metabolite synthesis has growth media specificity, and it was reflected in bioassays results against R. solani. Bananamides, rhamnolipids, and butenolides-like molecules were annotated from the metabolome, and chemical novelty was also suggested by several unidentified compounds. Additionally, genome mining confirmed a wide variety of BGCs present in this strain, with low to no similarity with known molecules. An NRPS-encoding BGC was identified as responsible for producing the banamides-like molecules, while phylogenetic analysis demonstrated a close relationship with other rhizosphere bacteria. Therefore, by combining -omics approaches and in vitro bioassays, our study demonstrates that Pseudomonas sp. So3.2b has potential application to agriculture as a source of bioactive metabolites.
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Affiliation(s)
- Naydja Moralles Maimone
- 'Luiz de Queiroz' Superior College of Agriculture, Department of Math, Chemistry, and Statistics, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Mario Cezar Pozza Junior
- 'Luiz de Queiroz' Superior College of Agriculture, Department of Math, Chemistry, and Statistics, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Lucianne Ferreira Paes de Oliveira
- 'Luiz de Queiroz' Superior College of Agriculture, Department of Math, Chemistry, and Statistics, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Dorian Rojas-Villalta
- Biotechnology Research Center, Department of Biology, Instituto Tecnológico de Costa Rica, Cartago, Costa Rica
| | - Simone Possedente de Lira
- 'Luiz de Queiroz' Superior College of Agriculture, Department of Math, Chemistry, and Statistics, University of São Paulo, Piracicaba, São Paulo, Brazil
| | - Leticia Barrientos
- Extreme Environments Biotechnology Lab, Center of Excellence in Translational Medicine, Universidad de La Frontera, Temuco, Chile
- *Correspondence: Leticia Barrientos, ; Kattia Núñez-Montero,
| | - Kattia Núñez-Montero
- Facultad Ciencias de la Salud, Instituto de Ciencias Biomédicas, Universidad Autónoma de Chile, Temuco, Chile
- *Correspondence: Leticia Barrientos, ; Kattia Núñez-Montero,
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An C, Ma S, Shi X, Liu C, Ding H, Xue W. Diversity and Ginsenoside Biotransformation Potential of Cultivable Endophytic Fungi Associated With Panax bipinnatifidus var. bipinnatifidus in Qinling Mountains, China. Front Pharmacol 2022; 13:762862. [PMID: 35444534 PMCID: PMC9014171 DOI: 10.3389/fphar.2022.762862] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2021] [Accepted: 03/01/2022] [Indexed: 11/13/2022] Open
Abstract
To obtain novel fungi with potent β-glucosidase for minor ginsenoside production, Panax bipinnatifidus var. bipinnatifidus, which is a traditional medicinal plant containing various ginsenosides, was first employed to isolate endophytic fungi in this study. A total of 93 representative morphotype strains were isolated and identified according to ITS rDNA sequence analyses, and they were grouped into three phyla (Ascomycota, Basidiomycota, and Mucoromycota), five classes (Dothideomycetes, Sordariomycetes, Eurotiomycetes, Agaricomycetes, and Mucoromycetes), and 24 genera. Plectosphaerella (RA, 19.35%) was the most abundant genus, followed by Paraphoma (RA, 11.83%) and Fusarium (RA, 9.70%). The species richness index (S, 34) and the Shannon–Wiener index (H’, 3.004) indicated that P. bipinnatifidus harbored abundant fungal resources. A total of 26 endophytic fungal ethyl acetate extracts exhibited inhibitory activities against at least one pathogenic bacterium or fungus. In total, 11 strains showed strong β-glucosidase activities and also presented with the ability of ginsenoside biotransformation with varied glycoside-hydrolyzing pathways. Excitingly, three genera, namely, Ilyonectria, Sarocladium, and Lecanicillium, and all 11 taxa were first found to have the ability to transform ginsenosides in our study. The results indicated that P. bipinnatifidus could be a new fungi resource with potential novel natural compounds with antimicrobial activity and potent β-glucosidase for varied minor ginsenoside production.
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Affiliation(s)
- Chao An
- Shaanxi Institute of Microbiology, Xi'an, China.,Engineering Center of QinLing Mountains Natural Products, Shaanxi Academy of Sciences, Xi'an, China
| | - Saijian Ma
- Shaanxi Institute of Microbiology, Xi'an, China.,Engineering Center of QinLing Mountains Natural Products, Shaanxi Academy of Sciences, Xi'an, China
| | - Xinwei Shi
- Engineering Center of QinLing Mountains Natural Products, Shaanxi Academy of Sciences, Xi'an, China.,Xi'an Botanical Garden of Shaanxi Province, Institute of Botany of Shaanxi Province, Xi'an, China
| | - Chen Liu
- Shaanxi Institute of Microbiology, Xi'an, China.,Engineering Center of QinLing Mountains Natural Products, Shaanxi Academy of Sciences, Xi'an, China
| | - Hao Ding
- Shaanxi Institute of Microbiology, Xi'an, China.,Engineering Center of QinLing Mountains Natural Products, Shaanxi Academy of Sciences, Xi'an, China
| | - Wenjiao Xue
- Shaanxi Institute of Microbiology, Xi'an, China.,Engineering Center of QinLing Mountains Natural Products, Shaanxi Academy of Sciences, Xi'an, China
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Bhatnagar S, Kobori T, Ganesh D, Aoyagi H. Fungal Pigment-Assisted Silver Nanoparticle Synthesis and Their Antimicrobial and Cytotoxic Potential. Methods Mol Biol 2022; 2469:65-78. [PMID: 35508830 DOI: 10.1007/978-1-0716-2185-1_6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
The biological production of nanoparticles has taken center stage among the various generation methods available owing to its environment-friendly characteristics and reduced energy requirements. A protocol for pigment-assisted silver nanoparticle (AgNP) synthesis was established, employing an extracellular composite pigment produced by the Ascomycota Talaromyces purpurogenus (presently Talaromyces purpureogenus). The extracellular pigment can reduce the precursor silver salt into nanoparticles in the presence of sodium hydroxide and light. Transmission electron microscopy may be used to characterize the bio-generated nanoparticles, which can also be tested for their biological properties using antimicrobial and anticancer assays.
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Affiliation(s)
- Sharad Bhatnagar
- Life Science and Bioengineering, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
| | - Toshiro Kobori
- Life Science and Bioengineering, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Food Research Institute, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Deepak Ganesh
- Life Science and Bioengineering, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan
- Food Research Institute, National Agriculture and Food Research Organization, Tsukuba, Ibaraki, Japan
| | - Hideki Aoyagi
- Life Science and Bioengineering, Graduate School of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.
- Faculty of Life and Environmental Sciences, University of Tsukuba, Tsukuba, Ibaraki, Japan.
- Microbiology Research Center for Sustainability (MiCS), University of Tsukuba, Tsukuba, Ibaraki, Japan.
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