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Djinni I, Conroy L, Varbanov M, Souagui S, Yanat B, Defant A, Kecha M, Mancini I. Bioprospecting the potential of metabolites from a Saharan saline soil strain Nocardiopsis dassonvillei GSBS4. J Basic Microbiol 2024; 64:50-67. [PMID: 37721354 DOI: 10.1002/jobm.202300162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 08/08/2023] [Accepted: 08/26/2023] [Indexed: 09/19/2023]
Abstract
Saharan soil samples collected in El-Oued province have been investigated for actinobacteria as a valuable source for the production of bioactive metabolites. A total of 273 isolates were obtained and subjected to antagonistic activity tests against human pathogenic germs. A strain with a broad-spectrum antimicrobial activity was selected and identified as Nocardiopsis dassonvillei GSBS4, with high sequence similarities to N. dassonvillei subsp. dassonvilleiT X97886.1 (99%) based on polyphasic taxonomy approach and 16S ribosomal ribonucleic acid gene sequence analysis. The GSBS4 ethyl acetate crude extract showed strong antibacterial activity towards pathogenic bacteria and Candida albicans. It inhibited biofilm formation by Staphylococcus aureus and methicillin-resistant S. aureus with minimum inhibitory concentrations estimated at 0.144 and 1.15 mg·mL-1 , respectively. A 44% biofilm reduction was obtained for S. aureus and 61% for Pseudomonas aeruginosa. Furthermore, phenols composition of the crude extract showed a significant dose-dependent antioxidant activity by α-diphenyl-β-picrylhydrazyl (57.21%) and 2,2'-azinobis (3-ethylbenzothiazoline-6-sulfonic acid) (64.29%) radicals scavenging assays. Although no inhibition was obtained on human coronavirus human coronavirus (HCoV) 229E and on model enterovirus (poliovirus 1) infection, a dose-dependent increase in cell viability of HCoV 229E-infected cells was noticed as the viability increased from 21% to 37%. Bioassay-guided fractionation of the crude extract gave a fraction showing antibacterial activity, which was analyzed by liquid chromatography-electrospray mass spectrometric technique, providing structural features on a major purple metabolite.
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Affiliation(s)
- Ibtissem Djinni
- Département de Microbiologie, Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
- Bioorganic Chemistry Laboratory, Department of Physics, University of Trento, Povo Trento, Italy
| | - Leah Conroy
- Université de Lorraine, CNRS, Nancy, France
- RCSI School of Pharmacy and Biomolecular Sciences (PBS), Royal College of Surgeons in Ireland, Dublin, Ireland
| | - Mihayl Varbanov
- Université de Lorraine, CNRS, Nancy, France
- Laboratoire de Virologie, CHRU de Nancy Brabois, Vandœuvre-lès-Nancy, France
| | - Samiha Souagui
- Département de Microbiologie, Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Betitera Yanat
- Département de Microbiologie, Laboratoire de Biotechnologie Végétale et Ethnobotanique, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Andrea Defant
- Bioorganic Chemistry Laboratory, Department of Physics, University of Trento, Povo Trento, Italy
| | - Mouloud Kecha
- Département de Microbiologie, Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algeria
| | - Ines Mancini
- Bioorganic Chemistry Laboratory, Department of Physics, University of Trento, Povo Trento, Italy
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Djinni I, Defant A, Djoudi W, Chaabane Chaouch F, Souagui S, Kecha M, Mancini I. Modeling improved production of the chemotherapeutic polypeptide actinomycin D by a novel Streptomyces sp. strain from a Saharan soil. Heliyon 2019; 5:e01695. [PMID: 31193702 PMCID: PMC6538969 DOI: 10.1016/j.heliyon.2019.e01695] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2019] [Revised: 03/30/2019] [Accepted: 05/07/2019] [Indexed: 12/21/2022] Open
Abstract
The novel bioactive actinobacterial strain GSBNT10 obtained from a Saharan soil, was taxonomically characterized using a polyphasic approach. 16S rRNA gene sequence analysis supported the classification of the isolate within the genus Streptomyces indicating it as a novel species. The major metabolite responsible of the bioactivity was purified and structurally characterized as actinomycin D (act-D) by mass spectrometric and nuclear magnetic resonance analyses Plackett-Burman design (PBD) and response surface methodology (RSM) were applied in order to optimize the medium formulation for the production of this bioactive metabolite. By PBD experiments, NaNO3, K2HPO4 and initial pH value were selected as significant variables affecting the metabolite production. Central Composite Design (CCD) showed that adjustment of the fermentative medium at pH 8.25, K2HPO4 at 0.2 gL-1 and NaNO3 at 3.76 gL-1 were the values suiting the production of act-D. Moreover, the results obtained by the statistical approach were confirmed by act-D detection using the HPLC equipped with a diode array detector and coupled online with electrospray-mass spectrometry (ESIMS) technique. act-D production was highly stimulated, obtaining a good yield (656.46 mgL-1) which corresponds to a 58.56% increase compared with the non-optimized conditions and data from LC-ESIMS technique efficiently confirmed the forecast from RSM.
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Affiliation(s)
- Ibtissem Djinni
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Département de Microbiologie, Université de Bejaia, 06000, Algeria.,Bioorganic Chemistry Laboratory, Department of Physics, University of Trento, via Sommarive 14, Povo, I-38123, Trento, Italy
| | - Andrea Defant
- Bioorganic Chemistry Laboratory, Department of Physics, University of Trento, via Sommarive 14, Povo, I-38123, Trento, Italy
| | - Warda Djoudi
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Département de Microbiologie, Université de Bejaia, 06000, Algeria
| | - Faouzia Chaabane Chaouch
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - Samiha Souagui
- Bioorganic Chemistry Laboratory, Department of Physics, University of Trento, via Sommarive 14, Povo, I-38123, Trento, Italy
| | - Mouloud Kecha
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Département de Microbiologie, Université de Bejaia, 06000, Algeria
| | - Ines Mancini
- Bioorganic Chemistry Laboratory, Department of Physics, University of Trento, via Sommarive 14, Povo, I-38123, Trento, Italy
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Boudries H, Nabet N, Chougui N, Souagui S, Loupassaki S, Madani K, Dimitrov K. Optimization of ultrasound-assisted extraction of antioxidant phenolics from Capparis spinosa flower buds and LC–MS analysis. Food Measure 2019. [DOI: 10.1007/s11694-019-00144-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Souagui S, Djoudi W, Boudries H, Béchet M, Leclère V, Kecha M. Modeling and Statistical Optimization of Culture Conditions for Improvement of Antifungal Compounds Production by Streptomyces albidoflavus S19 Strain of Wastewater Origin. Antiinfect Agents 2019; 17:39-49. [PMID: 31328084 PMCID: PMC6596383 DOI: 10.2174/2211352516666180813102424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 07/20/2018] [Accepted: 08/08/2018] [Indexed: 01/13/2023]
Abstract
BACKGROUND The actinomycetes strains isolated from unexplored ecosystems are a promising alternative for the biosynthesis of novel antimicrobial compounds. Depending on the interesting antifungal activity of the studied strain S19, the statistical method seems to be an effective tool for optimizing the production of anticandidal molecules. INTRODUCTION This study was conducted in order to optimize the culture parameters (medium nutrients concentrations and initial pH value) affecting the production of antifungal metabolites from S. albidoflavus strain S19 (obtained from wastewater collected in Bejaia region, Algeria) using Response Surface Metho-dology (RSM). The best conditions for anti-Candida albicans compounds biosynthesis were determined. METHODS AND RESULTS The antimicrobial producer strain S. albidoflavus S19 was identified on the basis of morphological, chemicals characters and physiological characteristics along with 16S rRNA gene se-quencing analysis.Response Surface Methodology by Central Composite Design (CCD) was employed to improve the anti-C. albicans agents production through the optimization of medium parameters. The highest antifungal ac-tivity was obtained by using a mixture of 2g l-1 starch, 4g l-1 yeast extract, 2g l-1 peptone at pH 11. CONCLUSION The strain S19 isolated from wastewater showed a significant anti-C. albicans activity and this study revealed the effectiveness of RSM and CCD for increasing bioactive compounds production, rising the diameter of inhibition zones from 13 to 34 mm.
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Affiliation(s)
- S. Souagui
- Address correspondence to this author at the Laboratoire de Microbiologie Appliquée, Département de Microbiologie, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, 06000, Bejaia, Algérie; E-mail:
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Nabet N, Boudries H, Chougui N, Loupassaki S, Souagui S, Burló F, Hernández F, Carbonell-Barrachina ÁA, Madani K, Larbat R. Biological activities and secondary compound composition from Crithmum maritimum aerial parts. International Journal of Food Properties 2016. [DOI: 10.1080/10942912.2016.1222541] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- Nacim Nabet
- Laboratoire de Biomathématique, Biophysique, Biochimie, et Scientométrie, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algérie
| | - Hafid Boudries
- Laboratoire de Biomathématique, Biophysique, Biochimie, et Scientométrie, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algérie
| | - Nadia Chougui
- Laboratoire de Biochimie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algérie
| | - Sofia Loupassaki
- Department of Food Quality and Chemistry of Natural Products, Mediterranean Agronomic Institute of Chania/Centre International de Hautes Etudes Agronomiques Méditerranéennes, Chania, Crete, Greece
| | - Samiha Souagui
- Laboratoire de Microbiologie Appliquée, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algérie
| | - Francisco Burló
- GrupoCalidad y Seguridad Alimentaria, Departamento de Tecnología Agroalimentaria, Universidad Miguel Hernández de Elche, Carretera de Beniel, Orihuela, Alicante, Spain
| | - Francisca Hernández
- Grupo de Fruticultura y Técnicas de Producción, Departamento de Producción Vegetal y Microbiología, Universidad Miguel Hernández de Elche, Carretera de Beniel, Orihuela, Alicante, Spain
| | - Ángel A. Carbonell-Barrachina
- GrupoCalidad y Seguridad Alimentaria, Departamento de Tecnología Agroalimentaria, Universidad Miguel Hernández de Elche, Carretera de Beniel, Orihuela, Alicante, Spain
| | - Khodir Madani
- Laboratoire de Biomathématique, Biophysique, Biochimie, et Scientométrie, Faculté des Sciences de la Nature et de la Vie, Université de Bejaia, Bejaia, Algérie
| | - Romain Larbat
- INRA UMR 1121 “Agronomie & Environnement’’ Nancy-Colmar, Vandoeuvre Cedex, France
- Université de Lorraine UMR 1121 ‘‘Agronomie & Environnement’’ Nancy-Colmar, Vandoeuvre Cedex, France
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