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GC-MS Analysis of Bio-active Molecules Derived from Paracoccus pantotrophus FMR19 and the Antimicrobial Activity Against Bacterial Pathogens and MDROs. Indian J Microbiol 2016; 56:426-432. [PMID: 27784938 DOI: 10.1007/s12088-016-0609-1] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2016] [Accepted: 06/26/2016] [Indexed: 12/31/2022] Open
Abstract
The present investigation is focused on the study of chemical composition of a bioactive compound derived from a rumen isolate Paracoccus pantotrophus FMR19 using GC-MS and to find out the antibacterial activity of the extracted crude bioactive compounds against multidrug resistant organisms (MDROs) and other clinical pathogens. GC-MS analysis revealed that P. pantotrophus FMR19 produced eight major compounds that have been reported to exhibit antimicrobial property. The main components identified from hexane fraction are long chain alkanes, fatty alcohols, fatty acid methyl ester and aromatic hydrocarbons. These molecules are not only active against clinical pathogens such as Salmonella sp. and Proteus sp. and also effective against MDROs such as Metallo β lactamase and Pan drug resistant bacterial strains and Methicillin resistant Staphylococcus aureus.
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Mahmoud HM, Kalendar AA. Coral-Associated Actinobacteria: Diversity, Abundance, and Biotechnological Potentials. Front Microbiol 2016; 7:204. [PMID: 26973601 PMCID: PMC4770044 DOI: 10.3389/fmicb.2016.00204] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2015] [Accepted: 02/08/2016] [Indexed: 11/29/2022] Open
Abstract
Marine Actinobacteria, particularly coral-associated Actinobacteria, have attracted attention recently. In this study, the abundance and diversity of Actinobacteria associated with three types of coral thriving in a thermally stressed coral reef system north of the Arabian Gulf were investigated. Coscinaraea columna, Platygyra daedalea and Porites harrisoni have been found to harbor equivalent numbers of culturable Actinobacteria in their tissues but not in their mucus. However, different culturable actinobacterial communities have been found to be associated with different coral hosts. Differences in the abundance and diversity of Actinobacteria were detected between the mucus and tissue of the same coral host. In addition, temporal and spatial variations in the abundance and diversity of the cultivable actinobacterial communities were detected. In total, 19 different actinobacterial genera, namely Micrococcus, Brachybacterium, Brevibacterium, Streptomyces, Micromonospora, Renibacterium, Nocardia, Microbacterium, Dietzia, Cellulomonas, Ornithinimicrobium, Rhodococcus, Agrococcus, Kineococcus, Dermacoccus, Devriesea, Kocuria, Marmoricola, and Arthrobacter, were isolated from the coral tissue and mucus samples. Furthermore, 82 isolates related to Micromonospora, Brachybacterium, Nocardia, Micrococcus, Arthrobacter, Rhodococcus, and Streptomyces showed antimicrobial activities against representative Gram-positive and/or Gram-negative bacteria. Even though Brevibacterium and Kocuria were the most dominant actinobacterial isolates, they failed to show any antimicrobial activity, whereas less dominant genera, such as Streptomyces, did show antimicrobial activity. Focusing on the diversity of coral-associated Actinobacteria may help to understand how corals thrive under harsh environmental conditions and may lead to the discovery of novel antimicrobial metabolites with potential biotechnological applications.
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Affiliation(s)
- Huda M Mahmoud
- Faculty of Science, Department of Biological Sciences, Kuwait University Safat, Kuwait
| | - Aisha A Kalendar
- Faculty of Science, Department of Biological Sciences, Kuwait University Safat, Kuwait
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Mahdian D, Iranshahy M, Shakeri A, Hoseini A, Yavari H, Nazemi M, Iranshahi M. Cytotoxicity evaluation of extracts and fractions of five marine sponges from the Persian Gulf and HPLC fingerprint analysis of cytotoxic extracts. Asian Pac J Trop Biomed 2015. [DOI: 10.1016/j.apjtb.2015.07.020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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Chia YY, Kanthimathi MS, Khoo KS, Rajarajeswaran J, Cheng HM, Yap WS. Antioxidant and cytotoxic activities of three species of tropical seaweeds. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2015; 15:339. [PMID: 26415532 PMCID: PMC4587585 DOI: 10.1186/s12906-015-0867-1] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 09/18/2015] [Indexed: 01/07/2023]
Abstract
BACKGROUND Three species of seaweeds (Padina tetrastromatica, Caulerpa racemosa and Turbinaria ornata) are widely consumed by Asians as nutraceutical food due to their antioxidant properties. Studies have shown that these seaweeds exhibit bioactivities which include antimicrobial, antiviral, anti-hypertensive and anticoagulant activities. However, investigations into the mechanisms of action pertaining to the cytotoxic activity of the seaweeds are limited. The aim of this study was to determine the antioxidant and cytotoxic activities of whole extracts of P. tetrastromatica, C. racemosa and T. ornata, including the cellular events leading to the apoptotic cell death of the extract treated-MCF-7 cells. Bioassay guided fractionation was carried out and the compounds identified. METHODS Powdered samples were sequentially extracted for 24 h. Their antioxidant activities were assessed by the DPPH radical, superoxide, nitric oxide and hydroxyl radical scavenging assays. The cytotoxic activity of the extract-treated MCF-7cells was assessed using the MTT assay. The most potent fraction was subjected to bioassay guided fractionation with column chromatography. All the fractions were tested for cytotoxic activity, caspase activity and effect on DNA fragmentation. RESULTS All three seaweeds showed potent radical scavenging activities in the various assays. The activity of the cellular antioxidant enzymes, superoxide dismutase, catalase and glutathione reductase, in MCF-7 cells, decreased in a time-dependent manner. The partially purified fractions exhibited higher cytotoxic activity, as assessed by the MTT assay, than the whole extracts in the breast adenocarcinoma cell line, MCF-7. LC-MS analysis revealed the presence of bioactive alkaloids such as camptothecin, lycodine and pesudopelletierine. CONCLUSION Based on the results obtained, all three seaweeds are rich sources of enzymatic and non-enzymatic antioxidants which could contribute to their reported medicinal benefits.
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Affiliation(s)
- Yin Yin Chia
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - M S Kanthimathi
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
- University of Malaya Centre for Proteomics Research (UMCPR), University of Malaya, Kuala Lumpur, Malaysia.
| | - Kong Soo Khoo
- Department of Chemical Science, Faculty of Science, Universiti Tunku Abdul Rahman (Kampar campus), Jalan Universiti, Bandar Barat, 31900, Kampar, Perak, Malaysia.
| | - Jayakumar Rajarajeswaran
- Department of Molecular Medicine, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Hwee Ming Cheng
- Department of Physiology, Faculty of Medicine, University of Malaya, 50603, Kuala Lumpur, Malaysia.
| | - Wai Sum Yap
- Department of Biotechnology, Faculty of Applied Sciences, UCSI University, 56000 UCSI Heights, Kuala Lumpur, Malaysia.
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Trindade M, van Zyl LJ, Navarro-Fernández J, Abd Elrazak A. Targeted metagenomics as a tool to tap into marine natural product diversity for the discovery and production of drug candidates. Front Microbiol 2015; 6:890. [PMID: 26379658 PMCID: PMC4552006 DOI: 10.3389/fmicb.2015.00890] [Citation(s) in RCA: 85] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2015] [Accepted: 08/17/2015] [Indexed: 11/13/2022] Open
Abstract
Microbial natural products exhibit immense structural diversity and complexity and have captured the attention of researchers for several decades. They have been explored for a wide spectrum of applications, most noteworthy being their prominent role in medicine, and their versatility expands to application as drugs for many diseases. Accessing unexplored environments harboring unique microorganisms is expected to yield novel bioactive metabolites with distinguishing functionalities, which can be supplied to the starved pharmaceutical market. For this purpose the oceans have turned out to be an attractive and productive field. Owing to the enormous biodiversity of marine microorganisms, as well as the growing evidence that many metabolites previously isolated from marine invertebrates and algae are actually produced by their associated bacteria, the interest in marine microorganisms has intensified. Since the majority of the microorganisms are uncultured, metagenomic tools are required to exploit the untapped biochemistry. However, after years of employing metagenomics for marine drug discovery, new drugs are vastly under-represented. While a plethora of natural product biosynthetic genes and clusters are reported, only a minor number of potential therapeutic compounds have resulted through functional metagenomic screening. This review explores specific obstacles that have led to the low success rate. In addition to the typical problems encountered with traditional functional metagenomic-based screens for novel biocatalysts, there are enormous limitations which are particular to drug-like metabolites. We also present how targeted and function-guided strategies, employing modern, and multi-disciplinary approaches have yielded some of the most exciting discoveries attributed to uncultured marine bacteria. These discoveries set the stage for progressing the production of drug candidates from uncultured bacteria for pre-clinical and clinical development.
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Affiliation(s)
- Marla Trindade
- Institute for Microbial Biotechnology and Metagenomics, University of the Western Cape, BellvilleSouth Africa
| | - Leonardo Joaquim van Zyl
- Institute for Microbial Biotechnology and Metagenomics, University of the Western Cape, BellvilleSouth Africa
| | - José Navarro-Fernández
- Institute for Microbial Biotechnology and Metagenomics, University of the Western Cape, BellvilleSouth Africa
- Centro Regional de Hemodonación, Servicio de Hematología y Oncología Médica, Universidad de Murcia, IMIB-Arrixaca, MurciaSpain
| | - Ahmed Abd Elrazak
- Institute for Microbial Biotechnology and Metagenomics, University of the Western Cape, BellvilleSouth Africa
- Botany Department, Faculty of Science, Mansoura University, MansouraEgypt
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Kalpana V, Rajeswari VD. Production of Xylanase from Various Lignocellulosic Waste Materials by Streptomyces sp. and its Potential Role in Deinking of Newsprint. ACTA ACUST UNITED AC 2015. [DOI: 10.3923/ajb.2015.222.229] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Hvidsten I, Mjøs SA, Bødtker G, Barth T. Fatty acids in bacterium Dietzia sp. grown on simple and complex hydrocarbons determined as FAME by GC-MS. Chem Phys Lipids 2015; 190:15-26. [PMID: 26120076 DOI: 10.1016/j.chemphyslip.2015.06.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Revised: 05/07/2015] [Accepted: 06/18/2015] [Indexed: 11/29/2022]
Abstract
The influence of growth substrates on the fatty acids produced by Dietzia sp. A14101 has been studied to investigate how qualitative and semi-quantitative information on fatty acids correlates with the ability of this strain to access and utilize a wide range of water-immiscible HC-substrates by modifying the FA content and thus also the properties of the cellular membrane. After incubation on different substrates and media, the profiles of fatty acids (FA) were analyzed by gas chromatography and mass spectrometry (GC-MS). The equivalent chain length (ECL) index calibration system was employed to identify FA. The effect of each substrate on the cell surface charge and on the hydrophobicity of the cellular membrane was also investigated. The results indicate that the variation of the content of saturated fatty acids (SAT-FA) versus mono-unsaturated fatty acids (MUFA) was found to be the most pronounced while branched FA exhibited much less variation in spite of different substrate regimes. The regulation of the ratio of SAT-FA and MUFA seems to be coupled with the regulation of the charge and hydrophobicity of the outer cellular surface. The exposure to a water immiscible substrate led to the development of the negative cellular surface charge, production of carotenoid-type pigments and increased hydrophobicity of the cellular surface. The specific aspects of the adaptation mechanism could have implications for bioremediation and/or (M)EOR applications.
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Affiliation(s)
- Ina Hvidsten
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway.
| | - Svein Are Mjøs
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
| | - Gunhild Bødtker
- Uni Research CIPR, Uni Research, P.O. Box 7810, 5020 Bergen, Norway
| | - Tanja Barth
- Department of Chemistry, University of Bergen, Allégaten 41, 5007 Bergen, Norway
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Chia YY, Kanthimathi M, Rajarajeswaran J, Khoo KS, Cheng HM. Antioxidant, antiproliferative, genotoxic and cytoprotective effects of the methanolic extract ofPadina tetrastromaticaon human breast adenocarcinoma and embryonic fibroblast cell lines. FRONTIERS IN LIFE SCIENCE 2015. [DOI: 10.1080/21553769.2015.1051245] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Inhibitory activities of the marine streptomycete-derived compound SF2446A2 against Chlamydia trachomatis and Schistosoma mansoni. J Antibiot (Tokyo) 2015; 68:674-9. [PMID: 25990954 DOI: 10.1038/ja.2015.54] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Revised: 03/24/2015] [Accepted: 04/03/2015] [Indexed: 12/18/2022]
Abstract
Infectious diseases caused by chlamydia or schistosomes are a major health problem worldwide, and particularly so in developing countries. The lack of appropriate vaccines renders the search for potent natural products against these disease-causing agents an urgent endeavor. Sponge-associated actinomycetes represent a rich reservoir for natural products. Among them, members of the genus Streptomyces are capable of synthesizing an impressive array of diverse natural products with a wide variety of biological activities. The naphthacene glycoside SF2446A2 was isolated from the calcium alginate beads culture of Streptomyces sp. strain RV15 that had originally been obtained from the Mediterranean sponge Dysidea tupha. Its structure was identified by spectroscopic analysis and MS and comparison with the literature data. SF2446A2 showed inhibitory activity against Chlamydia trachomatis and was able to inhibit the primary infection in a dose-dependent manner, as well as progeny formation. Moreover, it caused disruptive effects on the surface area of Schistosoma mansoni and affected the gonads by impairing oogenesis and spermatogenesis. Our current study demonstrates that sponge-associated actinomycetes are capable of providing compounds with new pharmacological activities and with relevance to drug discovery.
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Ravikumar S, Fredimoses M, Gnanadesigan M. Anticancer property of sediment actinomycetes against MCF-7 and MDA-MB-231 cell lines. Asian Pac J Trop Biomed 2015; 2:92-6. [PMID: 23569875 DOI: 10.1016/s2221-1691(11)60199-8] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2011] [Revised: 08/04/2011] [Accepted: 08/20/2011] [Indexed: 10/14/2022] Open
Abstract
OBJECTIVE To investigate the anticancer property of marine sediment actinomycetes against two different breast cancer cell lines. METHODS In vitro anticancer activity was carried out against breast (MCF-7 and MDA-MB-231) cancer cell lines. Partial sequences of the 16s rRNA gene, phylogenetic tree construction, multiple sequence analysis and secondary structure analysis were also carried out with the actinomycetes isolates. RESULTS Of the selected five actinomycete isolates, ACT01 and ACT02 showed the IC50 value with (10.13±0.92) and (22.34±5.82) µg/mL concentrations, respectively for MCF-7 cell line at 48 h, but ACT01 showed the minimum (18.54±2.49 µg/mL) level of IC50 value with MDA-MB-231 cell line. Further, the 16s rRNA partial sequences of ACT01, ACT02, ACT03, ACT04 and ACT05 isolates were also deposited in NCBI data bank with the accession numbers of GQ478246, GQ478247, GQ478248, GQ478249 and GQ478250, respectively. The phylogenetic tree analysis showed that, the isolates of ACT02 and ACT03 were represented in group I and III, respectively, but ACT01 and ACT02 were represented in group II. The multiple sequence alignment of the actinomycete isolates showed that, the maximum identical conserved regions were identified with the nucleotide regions of 125 to 221st base pairs, 65 to 119th base pairs and 55, 48 and 31st base pairs. Secondary structure prediction of the 16s rRNA showed that, the maximum free energy was consumed with ACT03 isolate (-45.4 kkal/mol) and the minimum free energy was consumed with ACT04 isolate (-57.6 kkal/mol). CONCLUSIONS The actinomycete isolates of ACT01 and ACT02 (GQ478246 and GQ478247) which are isolated from sediment sample can be further used as anticancer agents against breast cancer cell lines.
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Affiliation(s)
- S Ravikumar
- School of Marine Sciences, Department of Oceanography and Coastal Area Studies, Alagappa University, Thondi Campus, Thondi-623 409, Ramanathapuram District, Tamil Nadu, India
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Sathish KSR, Kokati VBR. In-vitro antimicrobial activity of marine actinobacteria against multidrug resistance Staphylococcus aureus. Asian Pac J Trop Biomed 2015; 2:787-92. [PMID: 23569848 DOI: 10.1016/s2221-1691(12)60230-5] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Revised: 02/27/2012] [Accepted: 04/12/2012] [Indexed: 11/30/2022] Open
Abstract
OBJECTIVE To investigate the antibacterial activity of marine actinobacteria against multidrug resistance Staphylococcus aureus (MDRSA). METHODS Fifty one actinobacterial strains were isolated from salt pans soil, costal area in Kothapattanam, Ongole, Andhra Pradesh. Primary screening was done using cross-streak method against MDRSA. The bioactive compounds are extracted from efficient actinobacteria using solvent extraction. The antimicrobial activity of crude and solvent extracts was performed using Kirby-Bauer method. MIC for ethyl acetate extract was determined by modified agar well diffusion method. The potent actinobacteria are identified using Nonomura key, Shirling and Gottlieb 1966 with Bergey's manual of determinative bacteriology. RESULTS Among the fifty one isolates screened for antibacterial activity, SRB25 were found efficient against MDRSA. The ethyl acetate extracts showed high inhibition against test organism. MIC test was performed with the ethyl acetate extract against MDRSA and found to be 1 000 µg/mL. The isolated actinobacteria are identified as Streptomyces sp with the help of Nonomura key. CONCLUSIONS The current investigation reveals that the marine actinobacteria from salt pan environment can be able to produce new drug molecules against drug resistant microorganisms.
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Affiliation(s)
- Kumar S R Sathish
- Molecular and Microbiology Research Laboratory, Environmental Biotechnology Division, School of Bio Sciences and Technology, VIT University, Vellore - 632 014, Tamil Nadu, India
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Diversity and antagonistic properties of culturable halophilic actinobacteria in soils of two arid regions of septentrional Sahara: M’zab and Zibans. ANN MICROBIOL 2015. [DOI: 10.1007/s13213-015-1065-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
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Flora DO, Adeyemi AI, George WP. Hyoscyamine-producing marine Actinomycetes from Lagos Lagoon sediment. Asian Pac J Trop Biomed 2015. [DOI: 10.1016/s2221-1691(15)30006-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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Rambabu V, Suba S, Vijayakumar S. Antimicrobial and antiproliferative prospective of kosinostatin - a secondary metabolite isolated from Streptomyces sp. J Pharm Anal 2014; 5:378-382. [PMID: 29403952 PMCID: PMC5762245 DOI: 10.1016/j.jpha.2014.11.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2014] [Revised: 11/17/2014] [Accepted: 11/20/2014] [Indexed: 12/30/2022] Open
Abstract
Cancer is a communal health hazard worldwide. The present investigation attempts to evaluate antimicrobial and anticancer potential of kosinostatin on mammary carcinoma cell line (MCF-7). The anticancer and antiproliferative activities of kosinostatin were analyzed on MCF cell line by MTT assay and cytotoxicity assays like lactate dehydrogenase (LDH) and glutathione (GSH). The secondary metabolite kosinostatin exhibited its apoptotic nature by expressing p53 protein. Collectively, the results acquired from this study promise that kosinostatin shows the potent anticancer activity.
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Affiliation(s)
- Vinayagam Rambabu
- P.G. and Research Department of Botany and Microbiology, A.V.V.M. Sri Pushpam College (Autonomous), Poondi, Thanjavur, Tamil Nadu, India
| | | | - Suburamaniyan Vijayakumar
- P.G. and Research Department of Botany and Microbiology, A.V.V.M. Sri Pushpam College (Autonomous), Poondi, Thanjavur, Tamil Nadu, India
- Corresponding author. Tel.: +91 9003311921; fax: +91 4374239328.
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Benouagueni S, Ranque S, Gacemi Kirane D. A non-polyenic antifungal produced by a Streptomyces yatensis strain isolated from Mellah Lake in El Kala, North-East of Algeria. J Mycol Med 2014; 25:2-10. [PMID: 25458364 DOI: 10.1016/j.mycmed.2014.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 09/26/2014] [Accepted: 10/02/2014] [Indexed: 10/24/2022]
Abstract
OBJECTIVE This study aimed at describing one actinomycete strain E65 that was isolated from the water of Mellah Lake in El Kala, North-East of Algeria that produces a non-polyenic antifungal. MATERIALS AND METHODS Actinomycetes were isolated from Mellah Lake water and screened for antimicrobial activity. Antimicrobial assays were performed on ISP2 agar. The taxonomic position of the strain E65 was determined regarding phenotypic and 16S DNA sequences features. Time course of antifungal metabolites production was evaluated against Candida albicans on ISP2, ISP1 and GYEA broth. The active antifungal compound was extracted using dichloromethane and revealed by a thin layer of chromatography, chemical reagents, UV-visible and infrared spectroscopy. RESULTS A total of 104 actinomycetes were isolated and screened for antimicrobial activity; 21 strains were active against Staphylococcus aureus, Escherichia coli and Candida albicans. The strain E65 showed a high in vitro activity against S. aureus and C. albicans and a good antifungal activity against a clinical C. albicans strain resistant to 5-fluorocytosine. Its 16S rRNA sequence shared 99% similarity with the Streptomyces yatensis type strain within the Streptomyces violaceusniger subclade of the Streptomyces hygroscopicus clade. It produced a non-polyenic antifungal, the IR spectrum of the antifungal extract corresponded to none of the antimicrobials compounds known to be produced by actinomycete of the S. hygroscopicus clade. CONCLUSION The wetlands of El Kala, Algeria are a potential source of bioactive actinomycete that deserves to be explored and exploited. The Streptomyces yatensis E65 strain isolated from Mellah Lake brackish water produces a remarkable antifungal compound which original non-polyenic structure warrants further characterization.
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Affiliation(s)
- S Benouagueni
- Laboratory of genetic improvement of plants and adaptation, Team of water, soil, and microorganisms, Department of Biology, Badji Mokhtar University, PO box 12, 23000 Annaba, Algeria.
| | - S Ranque
- IP-TPT UMR MD3, Aix-Marseille Université, 13885 Marseille, France; APHM, CHU Timone-Adultes, Parasitology & Mycology, 13005 Marseille, France
| | - D Gacemi Kirane
- Laboratory of genetic improvement of plants and adaptation, Team of water, soil, and microorganisms, Department of Biology, Badji Mokhtar University, PO box 12, 23000 Annaba, Algeria
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Aouiche A, Meklat A, Bijani C, Zitouni A, Sabaou N, Mathieu F. Production of vineomycin A1 and chaetoglobosin A by Streptomyces sp. PAL114. ANN MICROBIOL 2014. [DOI: 10.1007/s13213-014-0973-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
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Grkovic T, Abdelmohsen UR, Othman EM, Stopper H, Edrada-Ebel R, Hentschel U, Quinn RJ. Two new antioxidant actinosporin analogues from the calcium alginate beads culture of sponge-associated Actinokineospora sp. strain EG49. Bioorg Med Chem Lett 2014; 24:5089-92. [PMID: 25266784 DOI: 10.1016/j.bmcl.2014.08.068] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Revised: 08/25/2014] [Accepted: 08/29/2014] [Indexed: 10/24/2022]
Abstract
Marine sponge-associated actinomycetes represent an exciting new resource for the identification of new and novel natural products . Previously, we have reported the isolation and structural elucidation of actinosporins A (1) and B (2) from Actinokineospora sp. strain EG49 isolated from the marine sponge Spheciospongia vagabunda. Herein, by employing different fermentation conditions on the same microorganism, we report on the isolation and antioxidant activity of structurally related metabolites, actinosporins C (3) and D (4). The antioxidant potential of actinosporins C and D was demonstrated using the ferric reducing antioxidant power (FRAP) assay. Additionally, at 1.25 μM, actinosporins C and D showed a significant antioxidant and protective capacity from the genomic damage induced by hydrogen peroxide in the human promyelocytic (HL-60) cell line.
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Affiliation(s)
- Tanja Grkovic
- Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia
| | - Usama Ramadan Abdelmohsen
- Department of Botany II, Julius-von-Sachs Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, D-97082 Würzburg, Germany
| | | | - Helga Stopper
- Department of Toxicology, University of Würzburg, Würzburg, Germany
| | - RuAngelie Edrada-Ebel
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, The John Arbuthnott Building, 161 Cathedral Street, Glasgow G4 0NR, UK
| | - Ute Hentschel
- Department of Botany II, Julius-von-Sachs Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, D-97082 Würzburg, Germany
| | - Ronald J Quinn
- Eskitis Institute for Drug Discovery, Griffith University, Brisbane, QLD 4111, Australia.
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Govindarajan G, Satheeja Santhi V, Jebakumar SRD. Antimicrobial potential of phylogenetically unique actinomycete, Streptomyces sp. JRG-04 from marine origin. Biologicals 2014; 42:305-11. [PMID: 25205608 DOI: 10.1016/j.biologicals.2014.08.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2014] [Revised: 08/15/2014] [Accepted: 08/16/2014] [Indexed: 11/27/2022] Open
Abstract
Due to the emergence of severe infectious diseases and thriving antibiotic resistance, there is a need to explore microbial-derived bioactive secondary metabolites from unexplored regions. Present study deals with a mangrove estuary derived strain of Streptomyces sp. with potent antimicrobial activity against various pathogens, including methicillin resistant Staphylococcus aureus. Bioactive compound was effective even at low MIC level, damages the membrane of methicillin resistant S. aureus and causes cell death, however it has no cytotoxic effect on H9C2 cells. 16S rRNA shared 99.5% sequence similarity to Streptomyces longispororuber. Optimum biomass and antimicrobial compound production were observed in production medium supplemented with 1.0% maltose and 0.5% yeast extract. The active compound purified from the chloroform extract of the cell-free supernatant was studied by FT-IR, 1H NMR, 13C NMR and LC ESI-MS and identified as aromatic polyketide. β-ketosynthase (KS) domain of the Streptomyces strain revealed 93.2% sequence similarity to the benzoisochromanequinone, an actinorhodin biosynthetic gene cluster of Streptomyces coelicolor A3(2). However, the region synthesizing the secondary metabolite produced by the S. longispororuber was not related to the KS domain of the strain, due to the phenomenon of horizontal gene transfer over the period of evolutionary process, thus generating metabolic compound diversity.
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Affiliation(s)
- Ganesan Govindarajan
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
| | - Velayudhan Satheeja Santhi
- Department of Molecular Microbiology, School of Biotechnology, Madurai Kamaraj University, Madurai 625021, Tamil Nadu, India
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69
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Abdelmohsen UR, Yang C, Horn H, Hajjar D, Ravasi T, Hentschel U. Actinomycetes from Red Sea sponges: sources for chemical and phylogenetic diversity. Mar Drugs 2014; 12:2771-89. [PMID: 24824024 PMCID: PMC4052315 DOI: 10.3390/md12052771] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2014] [Revised: 04/10/2014] [Accepted: 04/14/2014] [Indexed: 02/01/2023] Open
Abstract
The diversity of actinomycetes associated with marine sponges collected off Fsar Reef (Saudi Arabia) was investigated in the present study. Forty-seven actinomycetes were cultivated and phylogenetically identified based on 16S rRNA gene sequencing and were assigned to 10 different actinomycete genera. Eight putatively novel species belonging to genera Kocuria, Mycobacterium, Nocardia, and Rhodococcus were identified based on sequence similarity values below 98.2% to other 16S rRNA gene sequences available in the NCBI database. PCR-based screening for biosynthetic genes including type I and type II polyketide synthases (PKS-I, PKS-II) as well as nonribosomal peptide synthetases (NRPS) showed that 20 actinomycete isolates encoded each at least one type of biosynthetic gene. The organic extracts of nine isolates displayed bioactivity against at least one of the test pathogens, which were Gram-positive and Gram-negative bacteria, fungi, human parasites, as well as in a West Nile Virus protease enzymatic assay. These results emphasize that marine sponges are a prolific resource for novel bioactive actinomycetes with potential for drug discovery.
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Affiliation(s)
- Usama Ramadan Abdelmohsen
- Department of Botany II, Julius-von-Sachs Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, Würzburg D-97082, Germany.
| | - Chen Yang
- Division of Chemical & Life Sciences and Engineering and Division of Applied Mathematics and Computer Science, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
| | - Hannes Horn
- Department of Botany II, Julius-von-Sachs Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, Würzburg D-97082, Germany.
| | - Dina Hajjar
- Division of Chemical & Life Sciences and Engineering and Division of Applied Mathematics and Computer Science, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
| | - Timothy Ravasi
- Division of Chemical & Life Sciences and Engineering and Division of Applied Mathematics and Computer Science, King Abdullah University of Science and Technology, Thuwal 23955-6900, Saudi Arabia.
| | - Ute Hentschel
- Department of Botany II, Julius-von-Sachs Institute for Biological Sciences, University of Würzburg, Julius-von-Sachs-Platz 3, Würzburg D-97082, Germany.
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70
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Dineshkumar K, Aparna V, Madhuri KZ, Hopper W. Biological activity of sporolides A and B from Salinispora tropica: in silico target prediction using ligand-based pharmacophore mapping and in vitro activity validation on HIV-1 reverse transcriptase. Chem Biol Drug Des 2014; 83:350-61. [PMID: 24165098 DOI: 10.1111/cbdd.12252] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 10/09/2013] [Indexed: 11/29/2022]
Abstract
Sporolides A and B are novel polycyclic macrolides from the obligate marine actinomycetes, Salinispora tropica. The unique and novel structure of sporolides makes them interesting candidates for targeting diverse biological activities. Biological target prediction of sporolides was carried out using ligand-based pharmacophore screening against known inhibitors and drugs. Validation of pharmacophore screening was carried out for the identified hits. New biological targets predicted for sporolides using this method were HIV-1 reverse transcriptase, adenosine A3 receptor, endothelin receptor ET-A, oxytocin receptor, voltage-gated L-type calcium channel α-1C subunit/calcium channel α/Δ subunit 1. Drug-likeness properties were predicted for the selected compounds using QikProp module. Sporolides A and B showed maximum docking score with HIV-1 reverse transcriptase. Structural interaction fingerprints analysis indicated similar binding pattern of the sporolides with the HIV-1 reverse transcriptase. Sporolide B exhibited good inhibitory activity against HIV-1 reverse transcriptase in in vitro fluorescent assay.
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Affiliation(s)
- Kesavan Dineshkumar
- Department of Bioinformatics, School of Bioengineering, Faculty of Engineering & Technology, SRM University, Kattankulathur, 603203, TamilNadu, India
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71
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Abdelmohsen UR, Bayer K, Hentschel U. Diversity, abundance and natural products of marine sponge-associated actinomycetes. Nat Prod Rep 2014; 31:381-99. [DOI: 10.1039/c3np70111e] [Citation(s) in RCA: 186] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
This review discusses the diversity, abundance and natural products repertoire of actinomycetes associated with marine sponges. Comprehensive phylogenetic analysis was carried out and qPCR data on actinomycete abundances in sponge ecosystems are presented.
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Affiliation(s)
- Usama Ramadan Abdelmohsen
- Department of Botany II
- Julius-von-Sachs-Institute for Biological Sciences
- University of Würzburg
- 97082 Würzburg, Germany
- Department of Pharmacognosy
| | - Kristina Bayer
- Department of Botany II
- Julius-von-Sachs-Institute for Biological Sciences
- University of Würzburg
- 97082 Würzburg, Germany
| | - Ute Hentschel
- Department of Botany II
- Julius-von-Sachs-Institute for Biological Sciences
- University of Würzburg
- 97082 Würzburg, Germany
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72
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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] [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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73
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Subramani R, Aalbersberg W. Culturable rare Actinomycetes: diversity, isolation and marine natural product discovery. Appl Microbiol Biotechnol 2013; 97:9291-321. [DOI: 10.1007/s00253-013-5229-7] [Citation(s) in RCA: 116] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2013] [Revised: 08/29/2013] [Accepted: 09/02/2013] [Indexed: 11/30/2022]
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74
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Müller R, Wink J. Future potential for anti-infectives from bacteria - how to exploit biodiversity and genomic potential. Int J Med Microbiol 2013; 304:3-13. [PMID: 24119567 DOI: 10.1016/j.ijmm.2013.09.004] [Citation(s) in RCA: 72] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
Abstract
The early stages of antibiotic development include the identification of novel hit compounds. Since actinomycetes and myxobacteria are still the most important natural sources of active metabolites, we provide an overview on these producers and discuss three of the most promising approaches toward finding novel anti-infectives from microorganisms. These are defined as the use of biodiversity to find novel producers, the variation of culture conditions and induction of silent genes, and the exploitation of the genomic potential of producers via "genome mining". Challenges that exist beyond compound discovery are outlined in the last section.
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Affiliation(s)
- Rolf Müller
- Helmholtz Institute for Pharmaceutical Research Saarland (HIPS), P.O. Box 151150, 66041 Saarbrücken, Germany; Helmholtz Centre for Infectious Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany
| | - Joachim Wink
- Helmholtz Centre for Infectious Research (HZI), Inhoffenstrasse 7, 38124 Braunschweig, Germany.
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75
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Messis A, Bettache A, Brahami A, Kecha M, Benallaoua S. Optimization of antifungal production from a novel strain Streptomyces sp. TKJ2 using response surface methodology. Med Chem Res 2013. [DOI: 10.1007/s00044-013-0627-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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76
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Wu ZC, Li S, Nam SJ, Liu Z, Zhang C. Nocardiamides A and B, two cyclohexapeptides from the marine-derived actinomycete Nocardiopsis sp. CNX037. JOURNAL OF NATURAL PRODUCTS 2013; 76:694-701. [PMID: 23586970 DOI: 10.1021/np400009a] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
Two new cyclic hexapeptides, nocardiamides A (1) and B (2), were isolated from the culture broth of marine-derived actinomycete CNX037 strain that was identified as a Nocardiopsis species. The planar structures of nocardiamides A (1) and B (2) were assigned on the basis of 1D and 2D NMR and HRESIMS spectroscopic analyses. Their absolute configurations were deduced by the advanced Marfey's method and chiral-phase HPLC analysis. The challenge of locating two d- and one l-valine residue in 1 and 2 was accomplished by total synthesis using solid-phase peptide synthetic methods. Both 1 and 2 showed negligible antimicrobial activities against seven indicator strains and exhibited no cytotoxicity against HCT-116.
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Affiliation(s)
- Zheng-Chao Wu
- Key Laboratory of Marine Bio-resources Sustainable Utilization, RNAM Center for Marine Microbiology, Guangdong Key Laboratory of Marine Materia Medica, South China Sea Institute of Oceanology, Chinese Academy of Sciences, 164 West Xingang Road, Guangzhou 510301, People's Republic of China
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77
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Modulation of LPS induced inflammatory response by Lawsonyl monocyclic terpene from the marine derived Streptomyces sp. Immunol Lett 2013; 150:79-86. [DOI: 10.1016/j.imlet.2012.09.001] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2012] [Revised: 08/24/2012] [Accepted: 09/04/2012] [Indexed: 01/14/2023]
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78
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Sowndhararajan K, Kang SC. Evaluation of in vitro free radical scavenging potential of Streptomyces sp. AM-S1 culture filtrate. Saudi J Biol Sci 2013; 20:227-33. [PMID: 23961239 DOI: 10.1016/j.sjbs.2012.12.003] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2012] [Revised: 12/03/2012] [Accepted: 12/03/2012] [Indexed: 10/27/2022] Open
Abstract
The present study was carried out to determine the free radical scavenging potential of culture filtrate of Streptomyces sp. AM-S1. Antioxidant activity of culture filtrate, lyophilized culture filtrate and ethyl acetate extract of Streptomyces sp. AM-S1 was determined by various in vitro assays such as ferric reducing power assay, phosphomolybdenum reduction, DPPH and ABTS radical scavenging activities. The results revealed that the culture filtrate of Streptomyces sp. AM-S1 effectively scavenged DPPH (IC50 90.2 μl/ml) and ABTS (IC50 13.2 μl/ml) radicals in a concentration dependent manner. In all the assays, ethyl acetate extract registered higher antioxidant activity when compared with the lyophilized culture filtrate (LCF). In addition, ethyl acetate extract (1123.4 μmole Fe(II)/mg extract) exhibited higher ferric reducing activity than the standard BHA (814.4 μmole Fe(II)/mg extract). Further works are needed on the isolation and identification of antioxidant molecules from the ethyl acetate extract of Streptomyces sp. AM-S1 culture filtrate.
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Affiliation(s)
- Kandhasamy Sowndhararajan
- Department of Biotechnology, College of Engineering, Daegu University, Gyeongsan, Gyeongbuk 712-714, Republic of Korea
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79
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Erb W, Zhu J. From natural product to marketed drug: the tiacumicin odyssey. Nat Prod Rep 2013; 30:161-74. [DOI: 10.1039/c2np20080e] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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80
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Khanna M, Solanki R. Streptomyces antibioticalis, a Novel Species from a Sanitary Landfill Soil. Indian J Microbiol 2012; 52:605-11. [PMID: 24293718 PMCID: PMC3516647 DOI: 10.1007/s12088-012-0309-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 09/17/2012] [Indexed: 11/25/2022] Open
Abstract
A novel isolate belonging to the genus Streptomyces, strain SL-4(T), was isolated from soil sample collected from a sanitary landfill, New Delhi, India. The taxonomic status of this isolate was studied by polyphasic approach including morphological, physiological and chemo-taxonomic characterization. Spore chains of SL-4(T) were open loops, hooks or extended spirals of wide diameter (retinaculiperti). The cell wall peptidoglycan of the isolate SL-4(T) contained L,L-diaminopimelic acid, suggesting that the strain has a cell wall of chemotype-I. The polar lipid profile of the isolate was of Type II, with phosphatidylglycerol, phosphatidylethanolamine, phosphatidylinositol and phosphatidylinositol mannosides. The 16SrRNA gene sequence similarity between SL-4(T) and its phylogenetic relatives Streptomyces atrovirens NRRLB 16357 (T) (DQ026672), S. albogriseolus NRRLB 1305 (T) (AJ494865), S viridodiastaticus NBRC 13106 (T) (AB184317), S. caelestis NRRL 2418 (T) (X80824), S. flavoviridis NBRC 12772 (T) (AB184842), S. pilosus NBRC 12807 (T) (AB184161) and S. longispororuber NBRC 13488 (T) (AB184440) was 99.65, 99.65, 99.64, 99.23, 99.15, 99.14 and 99.13 % respectively. Subsequent DNA-DNA hybridization experiments with the test strain and its clade members showed 55.27, 44.27, 36.86, and 15.65 % relatedness between SL-4(T) and its relatives S. atrovirens, S. albogriseolus, S. viridodiastaticus and S. longispororuber respectively. The genotypic and phenotypic data was analyzed to verify possibility of the isolate SL-4(T) representing novel member of the genus Streptomyces, for which the name S. antibioticalis is being proposed. The type strain is SL-4(T) (=CCM 7434(T)=MTCC 8588(T)).
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Affiliation(s)
- Monisha Khanna
- Acharya Narendra Dev College, University of Delhi, Govindpuri, Kalkaji, New Delhi, 110 019 India
| | - Renu Solanki
- Acharya Narendra Dev College, University of Delhi, Govindpuri, Kalkaji, New Delhi, 110 019 India
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81
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Zhang H, Wang H, Wang Y, Cui H, Xie Z, Pu Y, Pei S, Li F, Qin S. Genomic sequence-based discovery of novel angucyclinone antibiotics from marine Streptomyces sp. W007. FEMS Microbiol Lett 2012; 332:105-12. [DOI: 10.1111/j.1574-6968.2012.02582.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2012] [Revised: 04/20/2012] [Accepted: 04/20/2012] [Indexed: 11/27/2022] Open
Affiliation(s)
| | - Hongbo Wang
- Department of Pharmacology; School of Pharmacy; Yantai University; Yantai; China
| | - Yipeng Wang
- Yantai Institute of Coastal Zone Research; Chinese Academy of Sciences; Yantai; China
| | - Hongli Cui
- Yantai Institute of Coastal Zone Research; Chinese Academy of Sciences; Yantai; China
| | - Zeping Xie
- Yantai Institute of Coastal Zone Research; Chinese Academy of Sciences; Yantai; China
| | - Yang Pu
- Yantai Institute of Coastal Zone Research; Chinese Academy of Sciences; Yantai; China
| | - Shiqian Pei
- Department of Pharmacology; School of Pharmacy; Yantai University; Yantai; China
| | - Fuchao Li
- Key Laboratory of Experimental Marine Biology, Institute of Oceanology, Chinese Academy of Sciences; Qingdao; China
| | - Song Qin
- Yantai Institute of Coastal Zone Research; Chinese Academy of Sciences; Yantai; China
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82
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Nithya C, Pandian SK. Evaluation of bacterial diversity in Palk Bay sediments using terminal-restriction fragment length polymorphisms (T-RFLP). Appl Biochem Biotechnol 2012; 167:1763-77. [PMID: 22528645 DOI: 10.1007/s12010-012-9578-y] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2011] [Accepted: 01/19/2012] [Indexed: 11/24/2022]
Abstract
Although it is known that Palk Bay sediments harbor diverse and novel bacteria with important ecological and environmental functions, a comprehensive view of their molecular diversity is still lacking. In the present study, bacterial diversity in Palk Bay sediments was characterized using the molecular method terminal-restriction fragment length polymorphisms (T-RFLP). The bacterial assemblages detected by T-RFLP analysis revealed that the nearshore sediment harbored high number of bacterial count, whereas the 2.5-m sediment harbored diverse and distinct bacterial composition with fine heterogeneity. The major bacterial groups detected in all the three sediment samples were Actinobacteria, Bacteroidetes, Firmicutes, Proteobacteria (including alpha (α), gamma (γ), delta (δ), and epsilon (ε)-Proteobacteria), and uncultured bacteria. This is the first study that reveals the presence of Bacteroidetes, delta (δ)- and epsilon (ε)-Proteobacteria, and uncultured bacteria in Palk Bay sediments. The hitherto unexplored wide microbial diversity of Palk Bay coastal area was unraveled in the current study through culture-independent approach. These data suggest that the continued use of cultivation-independent techniques will undoubtedly lead to the discovery of additional bacterial diversity and provide a direct means to learn more about the ecophysiology and biotechnological potential of Palk Bay coastal area.
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Affiliation(s)
- Chari Nithya
- Department of Biotechnology, Alagappa University, Karaikudi 630 003, Tamil Nadu, India.
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83
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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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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84
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Dasari VRRK, Muthyala MKK, Nikku MY, Donthireddy SRR. Novel Pyridinium compound from marine actinomycete, Amycolatopsis alba var. nov. DVR D4 showing antimicrobial and cytotoxic activities in vitro. Microbiol Res 2012; 167:346-51. [PMID: 22293027 DOI: 10.1016/j.micres.2011.12.003] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2011] [Revised: 12/15/2011] [Accepted: 12/19/2011] [Indexed: 10/14/2022]
Abstract
Marine sediment samples from Visakhapatnam coast of Bay of Bengal, India, were investigated as a source of actinomycetes to screen for the production of antibiotics and cytotoxic compounds. Actinomycete strain DVR D4 with interesting bioactivity profile was isolated during our systematic study of marine actinomycetes. Based on biochemical properties and 16S rDNA analysis the isolate DVR D4 was identified as a strain of Amycolatopsis alba. A solvent extraction followed by a chromatographic purification helped to isolate a cytotoxic compound, which was identified as 1(10-aminodecyl) Pyridinium salt antibiotic, on the basis of spectral data. The compound showed potent cytotoxic activity against cancer cell lines of cervix (HeLa), breast (MCF-7) and brain (U87MG) in vitro and also exhibited antibacterial activities against Gram-positive and Gram-negative bacteria.
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85
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S.R. SK, Rao KVB. In–vitro antimicrobial activity of marine actinobacteria against multidrug resistance Staphylococcus aureus. Asian Pac J Trop Biomed 2012. [DOI: 10.1016/s2221-1691(12)60498-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
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86
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Assessment of resistomycin, as an anticancer compound isolated and characterized from Streptomyces aurantiacus AAA5. J Microbiol 2011; 49:920-6. [DOI: 10.1007/s12275-011-1260-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Accepted: 08/22/2011] [Indexed: 10/14/2022]
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87
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Saccharothrix sp. PAL54, a new chloramphenicol-producing strain isolated from a Saharan soil. World J Microbiol Biotechnol 2011; 28:943-51. [DOI: 10.1007/s11274-011-0892-2] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2011] [Accepted: 09/13/2011] [Indexed: 10/17/2022]
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88
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A novel strain of Actinopolyspora mortivallis with antibacterial activity isolated from a Saharan soil. ANN MICROBIOL 2011. [DOI: 10.1007/s13213-011-0346-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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89
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A new anthracene derivative from marine Streptomyces sp. W007 exhibiting highly and selectively cytotoxic activities. Mar Drugs 2011; 9:1502-1509. [PMID: 22131954 PMCID: PMC3225931 DOI: 10.3390/md9091502] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2011] [Revised: 08/17/2011] [Accepted: 08/19/2011] [Indexed: 11/28/2022] Open
Abstract
A new anthracene derivative, 3-hydroxy-1-keto-3-methyl-8-methoxy-1,2,3, 4-tetrahydro-benz[α]anthracene, was isolated from the marine strain Streptomyces sp. W007, and its structure was established by spectroscopic analysis including mass spectra, 1D- and 2D-NMR (1H–1H COSY, HMBC, HSQC and NOESY) experiments. 3-hydroxy-1-keto-3-methyl-8-methoxy-1,2,3,4-tetrahydro-benz[α]anthracene showed cytotoxicity against human lung adenocarcinoma cell line A549.
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90
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Isolation, taxonomy, and antagonistic properties of halophilic actinomycetes in Saharan soils of Algeria. Appl Environ Microbiol 2011; 77:6710-4. [PMID: 21764956 DOI: 10.1128/aem.00326-11] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The diversity of a population of 52 halophilic actinomycetes was evaluated by a polyphasic approach, which showed the presence of members of the Actinopolyspora, Nocardiopsis, Saccharomonospora, Streptomonospora, and Saccharopolyspora genera. One strain was considered to be a new member of the last genus, and several other strains seemed to be new species. Furthermore, 50% of strains were active against a broad range of indicators and contained genes encoding polyketide synthetases and nonribosomal peptide synthetases.
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91
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Selvakumar D, Arun K, Suguna S, Kumar D, Dhevendaran K. Bioactive potential of Streptomyces against fish and shellfish pathogens. IRANIAN JOURNAL OF MICROBIOLOGY 2010; 2:157-64. [PMID: 22347566 PMCID: PMC3279779] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Abstract
BACKGROUND AND OBJECTIVES In the present study, isolation of Streptomyces associated with marine sponges and its bioactive potential against fish and shellfish pathogens were assessed. The Streptomyces sp. were isolated from the marine sponges namely Callyspongia diffusa, Mycale mytilorum, Tedania anhelans and Dysidea fragilis collected from Vizhinjam port, situated in the South-West coast of India. MATERIALS AND METHODS The Streptomyces associated with marine sponges were isolated using specific ISP media. The isolates of Streptomyces were characterized for their colony characteristics, morphological properties, physiological and biochemical properties and were tentatively identified. The strains were cultivated on a lab scale level as shake-flask cultures and the crude extracts of the bioactive compounds obtained with ethyl acetate were screened biologically and chemically. By biological screening, the extracts were analyzed for their activity against fish and shellfish pathogens namely Aeromonas hydrophila, Serratia sp. and Vibrio spp, using the disk and agar-well diffusion bioassay method, while by chemical screening the crude culture extracts were analyzed by TLC and UV-Vis spectrophotometer. RESULTS Ninety-four isolates were found to be associated with marine sponges, among them only seven strains showed antagonism against fish and shellfish pathogens. Analysis of morphological, physiological and biochemical characteristics suggested that these strains belonged to the genus Streptomyces. The initial screening of the isolates by spot inoculation method exhibited antibacterial activity against Aeromonas hydrophila. In-vitro screening of the submerge culture extracts showed positive inhibition against the fish and shellfish pathogens namely Aeromonas hydrophila, Serratia sp. and Vibrio spp. The screening of bioactive compounds confirmed the production of polyene substances by UV spectrum, which resulted in absorbance peaks ranging from 225 to 245 nm and TLC analysis yielded R(f) values ranging from 0.40 to 0.78. CONCLUSION The results suggest that the seven Streptomyces strains isolated from marine sponges produce potential antibacterial compounds against fish and shellfish pathogens.
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Affiliation(s)
- D Selvakumar
- Department of Aquatic Biology and Fisheries, University of Kerala, Kariavattom campus, Trivandrum, 695 581, Kerala, India,Corresponding author: Dharmaraj Selvakumar MPhil. Address: 9/36, Second Street, Park Avenue, Thudiyalur, Coimbatore 641 034, Tamil Nadu, India. Tel: +91-9626949380. E-mail:
| | - K Arun
- Department of Biotechnology, AVVM Sri Pushpam College, Poondi, Thanjavur, 613 503, Tamil Nadu, India
| | - S Suguna
- Department of Biotechnology, AVVM Sri Pushpam College, Poondi, Thanjavur, 613 503, Tamil Nadu, India
| | - D Kumar
- Department of Biotechnology, AVVM Sri Pushpam College, Poondi, Thanjavur, 613 503, Tamil Nadu, India
| | - K Dhevendaran
- Department of Aquatic Biology and Fisheries, University of Kerala, Kariavattom campus, Trivandrum, 695 581, Kerala, India
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Bakkiyaraj D, Pandian SK. In vitro and in vivo antibiofilm activity of a coral associated actinomycete against drug resistant Staphylococcus aureus biofilms. BIOFOULING 2010; 26:711-717. [PMID: 20706890 DOI: 10.1080/08927014.2010.511200] [Citation(s) in RCA: 74] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
Staphylococcus aureus is now amongst the most important pathogenic bacteria responsible for bloodstream nosocomial infections and for biofilm formation on indwelling medical devices. Its increasing resistance to common antibiotics, partly attributed to its ability to form biofilms, is a challenge for the development of new antimicrobial agents. Accordingly, the goal of this study was to evaluate the effect of a coral associated actinomycete (CAA)-3 on S. aureus biofilms both in vitro and in vivo. Methanolic extracts of CAA-3 showed a reduction in in vitro biofilm formation by S. aureus ATCC 11632, methicillin resistant S. aureus ATCC 33591 and clinical isolates of S. aureus at the biofilm inhibitory concentration (BIC) of 0.1 mg ml(-1). Furthermore, confocal laser scanning microscope (CLSM) studies provide evidence of CAA-3 inhibiting intestinal colonisation of S. aureus in the nematode Caenorhabditis elegans. To conclude, this study for the first time, reports CAA as a promising source of anti-biofilm compounds, for developing novel drugs against highly resistant staphylococcal biofilms.
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93
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New potent DPPH radical scavengers from a marine-derived actinomycete strain USF-TC31. Biosci Biotechnol Biochem 2009; 73:2731-4. [PMID: 19966460 DOI: 10.1271/bbb.90636] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
Six compounds were isolated as radical scavengers from the culture broth of a marine-derived actinomycete strain USF-TC31. The structures of two novel compounds were determined to be those of N-carbamoyl-2,3-dihydroxybenzamide (5) and 2-acetamido-3-(2,3-dihydroxybenzoylthio)propanoic acid (6), and four known compounds were identified to be anthranilic acid (1), 2,3-dihydroxybenzoic acid (2), 2,3-dihydroxybenzamide (3) and benadrostin (4) on the basis of spectroscopic data. Compound 6 was characterized as a racemate by its specific rotation. Each of the obtained compounds was evaluated for DPPH (2,2-diphenyl-1-picrylhydrazyl) radical scavenging activity, and compounds 2, 3, 5 and 6 each exhibited potent activity in comparison with the butylhydroxytoluene (BHT) positive control.
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94
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Dharmaraj S, Sumantha A. Bioactive potential of Streptomyces associated with marine sponges. World J Microbiol Biotechnol 2009. [DOI: 10.1007/s11274-009-0096-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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