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Merrouche R, Yekkour A, Coppel Y, Bouras N, Zitouni A, Lebrihi A, Mathieu F, Sabaou N. A new dithiolopyrrolone antibiotic triggered by a long fermentation of Saccharothrix algeriensis NRRL B-24137 in sorbic acid-amended medium. Lett Appl Microbiol 2019; 69:294-301. [PMID: 31424588 DOI: 10.1111/lam.13207] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2019] [Revised: 08/09/2019] [Accepted: 08/09/2019] [Indexed: 11/28/2022]
Abstract
Saccharothrix algeriensis NRRL B-24137 is an actinobacterium isolated from Algerian Saharan soil. It produces bioactive compounds belonging to the dithiolopyrrolone class of antibiotics, which are characterized by the possession of a unique pyrrolinonodithiole nucleus. Dithiolopyrrolones are known for their strong antibacterial and antifungal activities. This class of antibiotics generated great interest after the discovery of their anticancer properties. In this study, an antibiotic named PR11, produced after a long bacterial fermentation (11 days) in sorbic acid-containing culture broth, was characterized as a new dithiolopyrrolone derivative. After HPLC analysis and purification, the chemical structure of this antibiotic was determined by 1 H- and 13 C-nuclear magnetic resonance, mass and UV-visible data. PR11 was thus characterized as an iso-hexanoyl-pyrrothine, a novel dithiolopyrrolone derivative. The minimum inhibitory concentrations of the new induced antibiotic were determined against several pathogenic micro-organisms. A moderate to strong activity was noted against all Gram-positive bacteria, filamentous fungi and yeasts tested. SIGNIFICANCE AND IMPACT OF THE STUDY: Given the strong activities of dithiolopyrrolones against diverse prokaryotic and eukaryotic micro-organisms including potent selective-anticancer activity, the discovery of new-related derivatives draw continuous attention for therapeutic research. Depending on nature and concentration of added precursor, Saccharothrix algeriensis NRRL B-24137 produce several dithiolopyrrolone coumpounds. In this study, sorbic acid addition combined to long fermentation duration was shown to induce the biosynthesis of a novel dithiolopyrrolone derivative. After purification and full spectroscopic and spectrometric study, the compound was characterized as iso-hexanoyl-pyrrothine. In the future investigation for novel dithiolopyrrolone discovery, fermentation duration should be regarded as a key parameter as well.
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Affiliation(s)
- R Merrouche
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - A Yekkour
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria.,Institut National de Recherche Agronomique d'Algérie, Alger, Algeria
| | - Y Coppel
- Laboratoire de Chimie de Coordination, CNRS, Université de Toulouse, UPS, INPT, Toulouse, France
| | - N Bouras
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria.,Département de Biologie, Faculté des Sciences de la Nature et de la Vie et Sciences de la Terre, Université de Ghardaïa, Ghardaïa, Algeria
| | - A Zitouni
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - A Lebrihi
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, Toulouse, France
| | - F Mathieu
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, Toulouse, France
| | - N Sabaou
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
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Bouti K, Boudjella H, Bouras N, Zitouni A, Mathieu F, Sabaou N. Taxonomy and antimicrobial activity of streptosporangium strain SG163 isolated from a Saharan soil. LSJ 2019. [DOI: 10.22453/lsj-020.1.035-054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
n a continuing search fornew antimicrobial products from actinobacteriacollected in Algerian Saharan soils, an isolateof actinobacteria,designated Sg163, was selected for its interesting antimicrobial activity.The isolate wasidentified to the genus Streptosporangium by phenotypicand molecular criteria. The cultural and physiological characterizations as well as phylogenetic analysis indicated that the isolate was different from known members of the genus Streptosporangium. Analysis of the 16S rRNA sequence showed 97.09to 98.27% similarity with those of Streptosporangium type strains. The strainSg163 produced antifungal and antibacterial activities on several culture media. The highest antimicrobial activities were obtained in ISP2 medium. Three active products C1, C2 and C3 with both antifungal and antibacterial activities were isolated and purified by chromatographic methodswith C2, as the major compound. The data of the infraredspectroscopy andthe chemical revelations, suggested that the active molecules were glycosylatedaromaticcompounds.
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Merrouche R, Yekkour A, Coppel Y, Bouras N, Lamari L, Zitouni A, Mathieu F, Lebrihi A, Sabaou N. Effective biosynthesis of benzoyl-pyrrothine dithiolopyrrolone antibiotic by cinnamic acid-precursor addition in culture of Saccharothrix algeriensis NRRL B-24137. Lett Appl Microbiol 2019; 68:165-172. [PMID: 30480824 DOI: 10.1111/lam.13101] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2018] [Revised: 11/15/2018] [Accepted: 11/16/2018] [Indexed: 11/30/2022]
Abstract
Dithiolopyrrolone antibiotics, produced by several micro-organisms, are known for their strong antimicrobial and antitumor activities. Among of this micro-organisms, Saccharothrix algeriensis NRRL B-24137, a rare actinobacterium, has the ability to produce several dithiolopyrrolones derivatives depending on precursors added in the culture medium. After 10 days of strain fermentation on semi-synthetic medium supplemented with cinnamic acid and HPLC purification, biosynthesis of benzoyl-pyrrothine dithiolopyrrolone was evidenced through complete spectroscopic (UV-visible and 1H and 13C NMR) and spectrometric (electron impact mass spectrum) analyses. The pure molecule showed appreciable minimum inhibitory concentration values against several Gram-positive bacteria and filamentous fungi. SIGNIFICANCE AND IMPACT OF THE STUDY: Dithiolopyrrolone antibiotics, known for their strong antimicrobial activities, gained greater interest after the discovery of their antitumor properties. Depending on precursors added, Saccharothrix algeriensis NRRL B-24137 has the ability to produce several dithiolopyrrolones derivatives. Since biological activities of dithiolopyrrolones are related to their variable structure, discover of new natural analogues to be therapeutically explored remains a significant framework of research. In this study, a new dithiolopyrrolone derivative was purified from the fermentation broth of S. algeriensis NRRL B-24137. This new antibiotic, characterized as benzoyl-pyrrothine dithiolopyrrolone, was induced by adding cinnamic acid, as precursor, to a semi-synthetic medium.
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Affiliation(s)
- R Merrouche
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - A Yekkour
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria.,Institut National de Recherche Agronomique d'Algérie, Station Mehdi Boualem Baraki, Alger, Algeria
| | - Y Coppel
- Laboratoire de Chimie de Coordination, CNRS, Université de Toulouse, UPS, INPT, Toulouse, France
| | - N Bouras
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria.,Département de Biologie, Faculté des Sciences de la Nature et de la Vie et Sciences de la Terre, Université de Ghardaïa, Ghardaïa, Algeria
| | - L Lamari
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - A Zitouni
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - F Mathieu
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, Toulouse, France
| | - A Lebrihi
- Laboratoire de Génie Chimique, Université de Toulouse, CNRS, Toulouse, France
| | - N Sabaou
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
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Adila F, Brahimi T, Chiba F, Ziane F, Ararem I, Aouni M, Zitouni A. Aspects épidémiologiques de la sarcoïdose médiastinopulmonaire dans le service de pneumologie de l’hôpital central de l’armée : à propos de 80 cas. Rev Mal Respir 2019. [DOI: 10.1016/j.rmr.2018.10.270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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5
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Aissani S, Ararem I, Haffaf M, Haouichat H, Zitouni A. Asthme prémenstruel, particularités et relation avec les hormones sexuelles. Rev Mal Respir 2019. [DOI: 10.1016/j.rmr.2018.10.177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Ziane F, Adila F, Aissani S, Zitouni A. Maladie de Carrington ou pneumopathie chronique idiopathique à éosinophiles (PCIE) : à propos de 13 cas. Rev Mal Respir 2019. [DOI: 10.1016/j.rmr.2018.10.519] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Adila F, Brahimi T, Zitouni A. Caractéristiques radiologiques, endoscopiques, biologiques et fonctionnelles des malades atteints de sarcoïdose médiastinopulmonaire et candidats à une corticothérapie orale. Rev Mal Respir 2019. [DOI: 10.1016/j.rmr.2018.10.256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Belyagoubi-Benhammou N, Belyagoubi L, El Zerey-Belaskri A, Zitouni A, Ghembaza N, Benhassaini H, Atik-Bekkara F, Piras A, Falconieri D, Rosa A. Fatty acid composition and antioxidant activity of Pistacia lentiscus L. fruit fatty oil from Algeria. Food Measure 2018. [DOI: 10.1007/s11694-018-9755-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [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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Adila F, Ziane F, Chiba F, Guediri S, Benzadi A, Zitouni A. Le cancer bronchique dans un service de pneumologie : étude de série de 640 cas. Rev Mal Respir 2018. [DOI: 10.1016/j.rmr.2017.10.239] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Aissani S, Ararem I, Haouichat H, Zitouni A, Haffaf M. Effets des hormones sexuelles sur le contrôle de l’asthme chez la ménopausée. Rev Mal Respir 2018. [DOI: 10.1016/j.rmr.2017.10.158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Adila F, Chiba F, Ziane F, Brahimi T, Benamara S, Zitouni A. La tuberculose ganglionnaire médiastinale dans le service de pneumologie de l’hôpital central de l’armée : aspects épidémiologiques, cliniques, paracliniques et thérapeutiques. Rev Mal Respir 2018. [DOI: 10.1016/j.rmr.2017.10.396] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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12
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Gohy S, Scohy A, Berardis S, Bressant F, Zitouni A, Aubriot AS, Bauwens N, Andre E, Lebecque P. 107 RGM medium versus MGIT™ for isolation of nontuberculous mycobacteria from sputum of patients with cystic fibrosis. J Cyst Fibros 2017. [DOI: 10.1016/s1569-1993(17)30471-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Samri SE, Baz M, Ghalbane I, El Messoussi S, Zitouni A, El Meziane A, Barakate M. Insecticidal activity of a Moroccan strain of Streptomyces phaeochromogenes LD-37 on larvae, pupae and adults of the Mediterranean fruit fly, Ceratitis capitata (Diptera: Tephritidae). Bull Entomol Res 2017; 107:217-224. [PMID: 28276307 DOI: 10.1017/s000748531600078x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The Mediterranean fruit fly (medfly), Ceratitis capitata, is considered the most important fruit pest worldwide. Its management is mainly based on the use of chemical insecticides. Although these conventional pesticides are effective at high doses, they cause considerable human health and environment problems. Thus, the aim of this study was to assess insecticidal activity of Moroccan actinobacteria against C. capitata. A total of 12 preselected actinobacteria isolated from various Moroccan habitats were screened for their insecticidal activity against larvae, pupae and adults of C. capitata. Four actinobacteria isolates were significantly active against the first-instar larvae, and nine were active against the medfly adult, while no significant mortality was obtained against the third-instar larval and pupal stages. Among the selected isolates, the biological screening revealed that strain Streptomyces LD-37, which showed 99.4% similarity with Streptomyces phaeochromogenes, exhibited the maximal corrected larval mortality of 98%. Moreover, the isolates AS1 and LD-37 showed the maximum significant corrected mortality against adults of 32.5 and 28.2%, respectively. The crude extract obtained from a fermented culture of strain S. phaeochromogenes LD-37 was separated into six fractions by thin layer chromatography. Fractions F3 and F4 caused a significant corrected larval mortality of 66.7 and 53.3%, respectively; whereas the maximum reduction in adult emergence was obtained with fraction F4. This finding could be useful for utilizing S. phaeochromogenes LD-37 as an alternative to chemical insecticides in pest management of C. capitata.
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Affiliation(s)
- S E Samri
- Laboratory of Biology and Biotechnology of Microorganisms,Department of Biology,Faculty of Sciences Semlalia,Cadi Ayyad University,P.O. Box. 2390 Marrakech 40000,Morocco
| | - M Baz
- Laboratory of Biology and Biotechnology of Microorganisms,Department of Biology,Faculty of Sciences Semlalia,Cadi Ayyad University,P.O. Box. 2390 Marrakech 40000,Morocco
| | - I Ghalbane
- Laboratory of Molecular and Ecophysiological Modelisation,Faculty of Sciences Semlalia,Cadi Ayyad University,P.O. Box. 2390 Marrakech 40000,Morocco
| | - S El Messoussi
- Laboratory of Molecular and Ecophysiological Modelisation,Faculty of Sciences Semlalia,Cadi Ayyad University,P.O. Box. 2390 Marrakech 40000,Morocco
| | - A Zitouni
- Department of Natural Sciences,Ecole Normale Supérieure,Algers,Algeria
| | - A El Meziane
- Laboratory of Biotechnology Valorisation and Protection of Agro-Resources,Faculty of Science and Techniques Gueliz,Cadi Ayyad University,P.O. Box 549 Marrakech 40000,Morocco
| | - M Barakate
- Laboratory of Biology and Biotechnology of Microorganisms,Department of Biology,Faculty of Sciences Semlalia,Cadi Ayyad University,P.O. Box. 2390 Marrakech 40000,Morocco
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Adjmi Hamoud H, Abdelouahed K, Lazri L, Bekhouche S, Ghirieb S, Lekhal Ayat A, Boubeukeur R, Zitouni A, Sahraoui M, Cherfi L. Apport du Western blot dans le diagnostic biologique de l’aspergillose. J Mycol Med 2016. [DOI: 10.1016/j.mycmed.2016.04.041] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Yekkour A, Sabaou N, Zitouni A, Errakhi R, Mathieu F, Lebrihi A. Characterization and antagonistic properties of Streptomyces strains isolated from Saharan soils, and evaluation of their ability to control seedling blight of barley caused by Fusarium culmorum. Lett Appl Microbiol 2015; 55:427-35. [PMID: 25998930 DOI: 10.1111/j.1472-765x.2012.03312.x] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2012] [Revised: 09/03/2012] [Accepted: 09/07/2012] [Indexed: 11/29/2022]
Abstract
UNLABELLED During a screening for potential plant disease control actinomycetes, a total of 133 strains were isolated from Saharan soil samples of seven Algerian regions by dilution technique on chitin-vitamins agar medium. Screening for antagonistic properties using streak assay method showed that 25% of isolates demonstrated strong activities against a wide range of plant pathogenic fungi. Due to their strong anti-Fusarium activities, six of these isolates were selected and subsequently related to Streptomyces species by polyphasic analysis. These isolates were evaluated for their biocontrol ability against Fusarium culmorum, a serious pathogenic fungus of cereals crops related to damping-off and seedling blight resulting in yield loss. Barley seeds were chosen as cereal plant model. Surface bacterized seeds with TW3, RI3 and TW2 strains expressed the highest performances and permit to reduce significantly both the disease occurrence on seedlings (62-76%) and the extent of seedling blight symptoms (over than 95%). However, a negative effect on plant establishment was observed for RI3 treatment. SIGNIFICANCE AND IMPACT OF THE STUDY The genus Fusarium is considered to be one of the most problematic phytopathogenic fungi for crop culture worldwide. Inside this genus, F. culmorum is the aetiological agent of seedling blight in various monocotyledonous plants such as barley and cause extensive yield and quality losses in humid and semi-humid regions. Biological control may be a successful alternative to chemical control, particularly with the controversy surrounding the use of the fungicides and the limited obtained results to control F. culmorum. This study highlights the effectiveness of some antagonistic Streptomyces isolated from Algerian Saharan soils to control F. culmorum by the reduction in disease occurrence and disease severity suggesting their use on microbial biocontrol formulation against soilborne diseases.
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Affiliation(s)
- A Yekkour
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria.,Centre de Recherche Polyvalent, Institut National de la Recherche Agronomique d'Algérie, Alger, Algeria
| | - N Sabaou
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - A Zitouni
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - R Errakhi
- Université Moulay Ismail, Meknès, Morocco
| | - F Mathieu
- Laboratoire de Génie Chimique, INPT-ENSAT, UMR 5503 (CNRS/INPT/UPS), Université de Toulouse, Castanet-Tolosan, France
| | - A Lebrihi
- Université Moulay Ismail, Meknès, Morocco.,Laboratoire de Génie Chimique, INPT-ENSAT, UMR 5503 (CNRS/INPT/UPS), Université de Toulouse, Castanet-Tolosan, France
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Yekkour A, Meklat A, Bijani C, Toumatia O, Errakhi R, Lebrihi A, Mathieu F, Zitouni A, Sabaou N. A novel hydroxamic acid-containing antibiotic produced by a Saharan soil-living Streptomyces strain. Lett Appl Microbiol 2015; 60:589-96. [PMID: 25754683 DOI: 10.1111/lam.12412] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2014] [Revised: 01/31/2015] [Accepted: 03/02/2015] [Indexed: 02/04/2023]
Abstract
During screening for potentially antimicrobial actinobacteria, a highly antagonistic strain, designated WAB9, was isolated from a Saharan soil of Algeria. A polyphasic approach characterized the strain taxonomically as a member of the genus Streptomyces. The strain WAB9 exhibited a broad spectrum of antimicrobial activity toward various multidrug-resistant micro-organisms. A PCR-based assay of genomic potential for producing bioactive metabolites revealed the presence of PKS-II gene. After 6 days of strain fermentation, one bioactive compound was extracted from the remaining aqueous phase and then purified by HPLC. The chemical structure of the compound was determined by spectroscopic (UV-visible, and (1)H and (13)C NMR) and spectrometric analysis. The compound was identified to be 2-amino-N-(2-amino-3-phenylpropanoyl)-N-hydroxy-3-phenylpropanamide, a novel hydroxamic acid-containing molecule. The pure molecule showed appreciable minimum inhibitory concentration values against a selection of drug-resistant bacteria, filamentous fungi and yeasts. Significance and impact of the study: This study presents the isolation of a Streptomyces strain, named WAB9, from a Saharan soil in Algeria. This strain was found to produce a new hydroxamic acid-containing molecule with interesting antimicrobial activities towards various multidrug-resistant micro-organisms. Although hydroxamic acid-containing molecules are known to exhibit low toxicities in general, only real evaluations of the toxicity levels could decide on the applications for which this new molecule is potentially most appropriate. Thus, this article provides a new framework of research.
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Affiliation(s)
- A Yekkour
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria.,Centre de Recherche Polyvalent, Institut National de la Recherche Agronomique d'Algérie, Alger, Algeria
| | - A Meklat
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - C Bijani
- Laboratoire de Chimie de Coordination (LCC), CNRS, Université de Toulouse, UPS, INPT, Toulouse, France
| | - O Toumatia
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - R Errakhi
- Université Moulay Ismail, Meknès, Morocco
| | - A Lebrihi
- Université Moulay Ismail, Meknès, Morocco
| | - F Mathieu
- Université de Toulouse, Laboratoire de Génie Chimique UMR 5503 (CNRS/INPT/UPS), INP de Toulouse/ENSAT, Castanet-Tolosan Cedex, France
| | - A Zitouni
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
| | - N Sabaou
- Laboratoire de Biologie des Systèmes Microbiens (LBSM), Ecole Normale Supérieure de Kouba, Alger, Algeria
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Duc F, Fabrèges X, Roth T, Detlefs C, Frings P, Nardone M, Billette J, Lesourd M, Zhang L, Zitouni A, Delescluse P, Béard J, Nicolin JP, Rikken GLJA. A 31 T split-pair pulsed magnet for single crystal x-ray diffraction at low temperature. Rev Sci Instrum 2014; 85:053905. [PMID: 24880385 DOI: 10.1063/1.4878915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We have developed a pulsed magnet system with panoramic access for synchrotron x-ray diffraction in magnetic fields up to 31 T and at low temperature down to 1.5 K. The apparatus consists of a split-pair magnet, a liquid nitrogen bath to cool the pulsed coil, and a helium cryostat allowing sample temperatures from 1.5 up to 250 K. Using a 1.15 MJ mobile generator, magnetic field pulses of 60 ms length were generated in the magnet, with a rise time of 16.5 ms and a repetition rate of 2 pulses/h at 31 T. The setup was validated for single crystal diffraction on the ESRF beamline ID06.
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Affiliation(s)
- F Duc
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
| | - X Fabrèges
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
| | - T Roth
- European Synchrotron Radiation Facility, Boîte Postale 220, F-38043 Grenoble Cedex, France
| | - C Detlefs
- European Synchrotron Radiation Facility, Boîte Postale 220, F-38043 Grenoble Cedex, France
| | - P Frings
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
| | - M Nardone
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
| | - J Billette
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
| | - M Lesourd
- European Synchrotron Radiation Facility, Boîte Postale 220, F-38043 Grenoble Cedex, France
| | - L Zhang
- European Synchrotron Radiation Facility, Boîte Postale 220, F-38043 Grenoble Cedex, France
| | - A Zitouni
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
| | - P Delescluse
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
| | - J Béard
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
| | - J P Nicolin
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
| | - G L J A Rikken
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
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Aouiche A, Bijani C, Zitouni A, Mathieu F, Sabaou N. Antimicrobial activity of saquayamycins produced by Streptomyces spp. PAL114 isolated from a Saharan soil. J Mycol Med 2013; 24:e17-23. [PMID: 24139182 DOI: 10.1016/j.mycmed.2013.09.001] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2013] [Revised: 09/02/2013] [Accepted: 09/12/2013] [Indexed: 11/26/2022]
Abstract
A new strain of actinomycete designated PAL114, producing antimicrobial compounds, was isolated from a Saharan soil in Ghardaïa, Algeria. Morphological and chemical studies showed that this strain belonged to the genus Streptomyces. Two bioactive compounds, named P41A and P41B, were extracted by dichloromethane from the cell-free supernatant broth of strain PAL114 and were purified by HPLC. Minimum inhibitory concentrations of the pure antibiotics were determined against yeasts, filamentous fungi and bacteria, most of which are pathogenic or toxigenic for human and multiresistant to antibiotics. The strongest activities were observed against Candida albicans M3 and Bacillus subtilis ATCC 6633. The chemical structures of the compounds were determined by spectroscopic analysis of UV-visible and 1H and 13C NMR spectra and spectrometric analysis of mass spectrum. The compounds P41A and P41B were identified as saquayamycins A and C, respectively. These compounds belong to the aquayamycin-group antibiotics, which are known in the literature for their anticancer and antibacterial activities.
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Affiliation(s)
- A Aouiche
- Laboratoire de biologie des systèmes microbiens, École normale supérieure de Kouba, Alger, Algeria
| | - C Bijani
- Laboratoire de chimie de coordination (LCC), CNRS, université de Toulouse, UPS, INPT, LCC, 205, route de Narbonne, 31077 Toulouse, France
| | - A Zitouni
- Laboratoire de biologie des systèmes microbiens, École normale supérieure de Kouba, Alger, Algeria
| | - F Mathieu
- Université de Toulouse, laboratoire de génie chimique UMR 5503 (CNRS/INPT/UPS), ENSAT/INP de Toulouse, 1, avenue de l'Agrobiopôle, Castanet-Tolosan cedex, France
| | - N Sabaou
- Laboratoire de biologie des systèmes microbiens, École normale supérieure de Kouba, Alger, Algeria.
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Boubetra D, Sabaou N, Zitouni A, Bijani C, Lebrihi A, Mathieu F. Taxonomy and chemical characterization of new antibiotics produced by Saccharothrix SA198 isolated from a Saharan soil. Microbiol Res 2012; 168:223-30. [PMID: 23245872 DOI: 10.1016/j.micres.2012.11.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2012] [Revised: 11/09/2012] [Accepted: 11/11/2012] [Indexed: 10/27/2022]
Abstract
Actinomycete strain SA198, isolated from a Saharan soil sample of Algeria, exhibited antimicrobial activity against Gram-positive and Gram-negative bacteria, and phytopathogenic and toxinogenic fungi. The morphological and chemotaxonomic characteristics of the strain were consistent with those of the genus Saccharothrix. Analysis of the 16S rRNA gene sequence of strain SA198 showed a similarity level ranging between 97.2 and 98.8% within Saccharothrix species, S. australiensis being the most closely related. Two new active products were isolated by reverse HPLC using a C18 column. The ultraviolet-visible (UV-VIS), infrared (IR), mass, and (1)H and (14)C nuclear magnetic resonance (NMR) spectra showed that these products were new bioactive compounds. The minimum inhibitory concentrations of these antibiotics showed a strong activity against fungi and moderate activities against Gram-positive and Gram-negative bacteria.
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Affiliation(s)
- D Boubetra
- Laboratoire de Biologie des Systèmes Microbiens, Ecole Normale Supérieure de Kouba, Alger, Algeria
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Billette J, Duc F, Frings P, Nardone M, Zitouni A, Detlefs C, Roth T, Crichton W, Lorenzo JE, Rikken GLJA. A 30 T pulsed magnet with conical bore for synchrotron powder diffraction. Rev Sci Instrum 2012; 83:043904. [PMID: 22559546 DOI: 10.1063/1.3701830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report on the design, construction, and operation of a horizontal field, 30 T magnet system with a conical bore optimized for synchrotron x-ray powder diffraction. The magnet offers ±31° optical access downstream of the sample, which allows to measure a sufficiently large number of Debye rings for an accurate crystal structure analysis. Combined with a 290 kJ generator, magnetic field pulses of 60 ms length were generated in the magnet, with a rise time of 4.1 ms and a repetition rate of 6 pulses/h at 30 T. The coil is mounted inside a liquid nitrogen bath. A liquid helium flow cryostat reaches into the coil and allows sample temperature between 5 and 250 K. The setup was used on the European Synchrotron Radiation Facility beamlines ID20 and ID06.
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Affiliation(s)
- J Billette
- Laboratoire National des Champs Magnétiques Intenses, CNRS-INSA-UJF-UPS, 143, avenue de Rangueil, F-31400 Toulouse, France
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21
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Aouiche A, Sabaou N, Meklat A, Zitouni A, Mathieu F, Lebrihi A. Activité antimicrobienne de Streptomyces sp. PAL111 d’origine saharienne contre divers microorganismes cliniques et toxinogènes résistants aux antibiotiques. J Mycol Med 2012. [DOI: 10.1016/j.mycmed.2011.12.077] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Jaudet C, Vignolles D, Audouard A, Levallois J, LeBoeuf D, Doiron-Leyraud N, Vignolle B, Nardone M, Zitouni A, Liang R, Bonn DA, Hardy WN, Taillefer L, Proust C. de Haas-van Alphen oscillations in the underdoped high-temperature superconductor YBa2Cu3O6.5. Phys Rev Lett 2008; 100:187005. [PMID: 18518412 DOI: 10.1103/physrevlett.100.187005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/22/2007] [Indexed: 05/26/2023]
Abstract
The de Haas-van Alphen effect was observed in the underdoped cuprate YBa2Cu3O6.5 via a torque technique in pulsed magnetic fields up to 59 T. Above a field of approximately 30 T the magnetization exhibits clear quantum oscillations with a single frequency of 540 T and a cyclotron mass of 1.76 times the free electron mass, in excellent agreement with previously observed Shubnikov-de Haas oscillations. The oscillations obey the standard Lifshitz-Kosevich formula of Fermi-liquid theory. This thermodynamic observation of quantum oscillations confirms the existence of a well-defined, closed, and coherent, Fermi surface in the pseudogap phase of cuprates.
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Affiliation(s)
- Cyril Jaudet
- Laboratoire National des Champs Magnétiques Pulsés (CNRS-UPS-INSA), Toulouse, France
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Boudjella H, Bouti K, Zitouni A, Mathieu F, Lebrihi A, Sabaou N. Isolation and partial characterization of pigment-like antibiotics produced by a new strain of Streptosporangium isolated from an Algerian soil. J Appl Microbiol 2008; 103:228-36. [PMID: 17584469 DOI: 10.1111/j.1365-2672.2006.03280.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
AIMS Identification of a new actinomycete strain Sg3, belonging to the genus Streptosporangium and partial characterization of the produced antibacterial activities. METHODS AND RESULTS The strain Sg3 was isolated from an Algerian Saharan soil and identified by morphological, chemotaxonomic and phylogenetic analyses to the genus Streptosporangium. The comparison of its physiological characteristics with those of known species of Streptosporangium showed significant differences with the nearest species Streptosporangium carneum. Analysis of the 16S rDNA sequence of strain Sg3 showed a similarity level ranging between 97% and 98.8% within Streptosporangium species, with S. carneum the most closely related. Strain Sg3 showed a red coloured antibacterial activity against gram-positive bacteria on several culture media. The purification of the red pigment by chromatographic methods led to the isolation of three active products. The (1)H nuclear magnetic resonance (NMR), mass, infrared (IR) and ultraviolet-visible (UV-VIS) data of these molecules strongly suggested that they belonged to the quinone-anthracycline group with three or more rings. CONCLUSIONS Strain Sg3 represents a distinct phyletic line suggesting a new genomic species. It produces antibacterial activities identified as quinone-anthracycline aromatics. SIGNIFICANCE AND IMPACT OF THE STUDY The quinone-anthracycline antibiotics are known for their antimicrobial and antineoplastic activities and are used in chemotherapy for the treatment of many cancer diseases. The present work constitutes the first stage of a whole series of studies to be realized on these antibiotics before arriving at a possible application.
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Affiliation(s)
- H Boudjella
- Laboratoire de Recherche sur les Produits bioactifs et la Valorisation de la Biomasse, Ecole Normale Supérieure de Kouba, Vieux-Kouba, Alger, Algérie
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Vanacken J, Frings P, Detlefs C, Duc F, Lorenzo JE, Nardone M, Billette J, Zitouni A, Bras W, Rikken G. Pulsed magnetic field synchrotron X-ray powder diffraction of the Jahn-Teller distortion in TbVO4. ACTA ACUST UNITED AC 2006. [DOI: 10.1088/1742-6596/51/1/109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Badji B, Zitouni A, Mathieu F, Lebrihi A, Sabaou N. Antimicrobial compounds produced by Actinomadura sp. AC104 isolated from an Algerian Saharan soil. Can J Microbiol 2006; 52:373-82. [PMID: 16699588 DOI: 10.1139/w05-132] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
During a search for nonpolyenic antifungal antibiotics, an actinomycete designated AC104 was isolated from a Saharan soil sample by a dilution agar plating method using a chitin - vitamins B medium supplemented with rifampicin. Isolate AC104 presented the morphological and the chemical characteristics of the genus Actinomadura. On the basis of 76 physiological tests and 16S rDNA analysis, this isolate was determined to be quite different from the known species of Actinomadura. It is active against filamentous fungi and both Gram-positive and Gram-negative bacteria. The production of antibiotic substances was investigated using several culture media. The highest antimicrobial activities were obtained on ISP2 medium. The benzenic extract contained five bioactive spots detected on thin layer chromatography plates. Among these antibiotics, a complex called 104A, which showed the more interesting antifungal activity, was selected and purified by reverse-phase high-pressure liquid chromatography. This complex is composed of four compounds. Ultraviolet-visible, infrared, mass, and 1H nuclear magnetic resonance spectroscopy studies showed that these molecules contain an aromatic ring substituted by aliphatic chains. These compounds differ from the known antibiotics produced by Actinomadura species.
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Affiliation(s)
- B Badji
- Laboratoire de Recherche sur les Produits Bioactifs et la Valorisation de la Biomasse, Ecole Normale Supérieure de Kouba, Biskra
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Zitouni A, Lamari L, Boudjella H, Badji B, Sabaou N, Gaouar A, Mathieu F, Lebrihi A, Labeda DP. Saccharothrix algeriensis sp. nov., isolated from Saharan soil. Int J Syst Evol Microbiol 2005; 54:1377-1381. [PMID: 15280317 DOI: 10.1099/ijs.0.02679-0] [Citation(s) in RCA: 57] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
The taxonomic position of a soil isolate, strain SA 233T, recovered from Saharan soil from Algeria was established using a polyphasic approach. This isolate has been previously reported to produce three novel dithiolopyrrolone antibiotics, and preliminary chemotaxonomic and morphological characteristics suggested that it was representative of a member of the genus Saccharothrix. Phylogenetic analysis of the strain from 16S rDNA sequences, along with a detailed analysis of morphological, chemotaxonomic and physiological characteristics, indicates that it belongs to the genus Saccharothrix and represents a novel species that is readily distinguished from all recognized Saccharothrix species. The name Saccharothrix algeriensis sp. nov. is proposed for the isolate, with type strain SA 233T (=NRRL B-24137T=DSM 44581T).
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MESH Headings
- Actinomycetales/classification
- Actinomycetales/isolation & purification
- Actinomycetales/physiology
- Actinomycetales/ultrastructure
- Algeria
- Bacterial Typing Techniques
- DNA, Bacterial/analysis
- DNA, Bacterial/chemistry
- DNA, Bacterial/isolation & purification
- DNA, Ribosomal/chemistry
- Fatty Acids/analysis
- Genes, rRNA
- Microscopy, Electron, Scanning
- Molecular Sequence Data
- Phylogeny
- RNA, Bacterial/genetics
- RNA, Ribosomal, 16S/genetics
- Sequence Analysis, DNA
- Sequence Homology
- Soil Microbiology
- Spores, Bacterial/ultrastructure
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Affiliation(s)
- A Zitouni
- Laboratoire de Recherche sur les Produits Bioactifs et la Valorisation de la Biomasse, Ecole Normale Supérieure de Kouba, B.P. 92, 16 050 Vieux-Kouba, Algiers, Algeria
- Ecole Nationale Supérieure Agronomique de Toulouse, INPT, Laboratoire de Génie Chimique, UMR 5503 (CNRS/INPT/UPS), 1, avenue de l'Agrobiopôle, B. P. 107, F31 326 Castanet-Tolosan Cedex, France
| | - L Lamari
- Centre de Recherche Scientifique et Technique sur les Régions Arides, Front de l'Oued, B. P. 1682, 07 000 Biskra, Algeria
- Laboratoire de Recherche sur les Produits Bioactifs et la Valorisation de la Biomasse, Ecole Normale Supérieure de Kouba, B.P. 92, 16 050 Vieux-Kouba, Algiers, Algeria
| | - H Boudjella
- Centre de Recherche Scientifique et Technique sur les Régions Arides, Front de l'Oued, B. P. 1682, 07 000 Biskra, Algeria
- Laboratoire de Recherche sur les Produits Bioactifs et la Valorisation de la Biomasse, Ecole Normale Supérieure de Kouba, B.P. 92, 16 050 Vieux-Kouba, Algiers, Algeria
| | - B Badji
- Centre de Recherche Scientifique et Technique sur les Régions Arides, Front de l'Oued, B. P. 1682, 07 000 Biskra, Algeria
- Laboratoire de Recherche sur les Produits Bioactifs et la Valorisation de la Biomasse, Ecole Normale Supérieure de Kouba, B.P. 92, 16 050 Vieux-Kouba, Algiers, Algeria
| | - N Sabaou
- Centre de Recherche Scientifique et Technique sur les Régions Arides, Front de l'Oued, B. P. 1682, 07 000 Biskra, Algeria
- Laboratoire de Recherche sur les Produits Bioactifs et la Valorisation de la Biomasse, Ecole Normale Supérieure de Kouba, B.P. 92, 16 050 Vieux-Kouba, Algiers, Algeria
| | - A Gaouar
- Centre de Recherche Scientifique et Technique sur les Régions Arides, Front de l'Oued, B. P. 1682, 07 000 Biskra, Algeria
| | - F Mathieu
- Ecole Nationale Supérieure Agronomique de Toulouse, INPT, Laboratoire de Génie Chimique, UMR 5503 (CNRS/INPT/UPS), 1, avenue de l'Agrobiopôle, B. P. 107, F31 326 Castanet-Tolosan Cedex, France
| | - A Lebrihi
- Ecole Nationale Supérieure Agronomique de Toulouse, INPT, Laboratoire de Génie Chimique, UMR 5503 (CNRS/INPT/UPS), 1, avenue de l'Agrobiopôle, B. P. 107, F31 326 Castanet-Tolosan Cedex, France
| | - D P Labeda
- Microbial Genomics and Bioprocessing Research Unit, National Center for Agricultural Utilization Research, USDA-Agricultural Research Service, Peoria, IL 61604, USA
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