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Dos Santos JDN, Pinto E, Martín J, Vicente F, Reyes F, Lage OM. Unveiling the bioactive potential of Actinomycetota from the Tagus River estuary. Int Microbiol 2024:10.1007/s10123-024-00483-0. [PMID: 38236380 DOI: 10.1007/s10123-024-00483-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 12/28/2023] [Accepted: 01/10/2024] [Indexed: 01/19/2024]
Abstract
The increase in global travel and the incorrect and excessive use of antibiotics has led to an unprecedented rise in antibiotic resistance in bacterial and fungal populations. To overcome these problems, novel bioactive natural products must be discovered, which may be found in underexplored environments, such as estuarine habitats. In the present work, estuarine actinomycetotal strains were isolated with conventional and iChip techniques from the Tagus estuary in Alcochete, Portugal, and analysed for different antimicrobial bioactivities. Extracts were produced from the isolated cultures and tested for bioactivity against Staphylococcus aureus ATCC 29213, Escherichia coli ATCC 25922, Aspergillus fumigatus ATCC 240305, Candida albicans ATCC 10231 and Trichophyton rubrum FF5. Furthermore, bioactive extracts were subjected to dereplication by high-performance liquid chromatography (HPLC) and high-resolution mass spectrometry (HRMS) to putatively identify their chemical components. In total, 105 isolates belonging to 3 genera were obtained. One which was isolated, MTZ3.1 T, represents a described novel taxon for which the name Streptomyces meridianus was proposed. Regarding the bioactivity testing, extracts from 12 strains proved to be active against S. aureus, 2 against E. coli, 4 against A. fumigatus, 3 against C. albicans and 10 against T. rubrum. Dereplication of bioactive extracts showed the presence of 28 known bioactive molecules, 35 hits have one or more possible matches in the DNP and 18 undescribed ones. These results showed that the isolated bacteria might be the source of new bioactive natural products.
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Affiliation(s)
- José Diogo Neves Dos Santos
- Department of Biology, Faculty of Sciences, University of Porto, Rua Do Campo Alegre, S/N, 4169-007, Porto, Portugal.
- Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, University of Porto, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal.
| | - Eugénia Pinto
- Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, University of Porto, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
- Laboratory of Microbiology, Department of Biological Sciences, Faculty of Pharmacy, University of Porto, Rua Jorge de Viterbo Ferreira 228, 4050-313, Porto, Portugal
| | - Jesús Martín
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, Avenida del Conocimiento, 34 Parque Tecnológico de Ciencias de La Salud, 18016, Granada, Spain
| | - Francisca Vicente
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, Avenida del Conocimiento, 34 Parque Tecnológico de Ciencias de La Salud, 18016, Granada, Spain
| | - Fernando Reyes
- Centro de Excelencia en Investigación de Medicamentos Innovadores en Andalucía, Fundación MEDINA, Avenida del Conocimiento, 34 Parque Tecnológico de Ciencias de La Salud, 18016, Granada, Spain
| | - Olga Maria Lage
- Department of Biology, Faculty of Sciences, University of Porto, Rua Do Campo Alegre, S/N, 4169-007, Porto, Portugal
- Interdisciplinary Centre of Marine and Environmental Research, Terminal de Cruzeiros Do Porto de Leixões, University of Porto, Avenida General Norton de Matos, S/N, 4450-208, Matosinhos, Portugal
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Khoshakhlagh A, Abroun S, Aghaei SS, Soleimani M, Zolfaghari MR. Analysis of the A549 cell line affected by anticancer bioactive compounds of Actinomycetes isolated from saline soils. Arch Microbiol 2022; 204:641. [PMID: 36149504 DOI: 10.1007/s00203-022-03258-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2021] [Revised: 08/16/2022] [Accepted: 09/12/2022] [Indexed: 11/02/2022]
Abstract
Actinomycetes are filamentous bacteria and the residents of the soil, prone to produce bioactive metabolites. This research aimed to isolate, classify, and investigate the anticancer properties of Actinomycetes secondary metabolites from various saline soils of Qom province. Actinomycetes isolates were molecularly recognized by 16SrRNA gene sequencing after the PCR procedure. The A549 cell line was then exposed to bacterial metabolites to find their cytotoxicity by MTT assay and their capacity to cause apoptosis by Flow cytometry. The expression levels of the bax and bcl-2 genes were determined using Real-time PCR. Bacterial metabolites were distinct by HPLC and GC-MS assays. Sequencing identified three novel Actinomycetes strains, Streptomyces griseoflavus, Streptomyces calvus, and Kitasatospora phosalacineus. The IC50 doses of bacterial metabolites were discovered equal to 1337, 2619, and 4874 µg/ml, respectively. Flow cytometric assay revealed that their secondary metabolites were capable of inducing apoptosis in A549 cells by 25%, 14.5%, and 7.58%, respectively. Real-time PCR findings displayed that the bax gene expression in A549 cells treated with S. griseoflavus and S. calvus, comparatively increased (P < 0.0008, P < 0.00056). The expression of the bcl-2 gene was significantly reduced in cells treated with S. griseoflavus and K. phosalacineus (P < 0.0006, P < 0.0004). The findings of this analysis showed the presence of new isolates in a soil sample from Qom province which can produce new anticancer agents and can be considered appropriate candidates for further research to employ as anticancer drugs.
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Affiliation(s)
- Amin Khoshakhlagh
- Department of Microbiology, Qom Branch, Islamic Azad University, Qom, Iran
| | - Saeid Abroun
- Department of Hematology, Faculty of Medical Sciences, Tarbiat Modares University, Tehran, 14115-11, Iran.
| | | | - Mohammad Soleimani
- Department of Microbiology, Faculty of Medicine, AJA University of Medical Sciences, Tehran, Iran
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Xing L, Chang Y, Zhang X, Hou X, Han Y, Shah M, Zhu T, Peng J, Zhang G, Che Q, Li D. Dimeric Tetracenomycin Derivatives from a Taklamakan Desert-Derived Streptomyces sp. HDN154193. JOURNAL OF NATURAL PRODUCTS 2022; 85:301-305. [PMID: 34933562 DOI: 10.1021/acs.jnatprod.1c00735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Bitetracenomycin A (1) and its diastereomers [(±)-bitetracenomycin B, (±)-2] were discovered from the cultures of Streptomyces sp. HDN154193. Compounds 1 and (±)-2 were the first tetracenomycin dimers obtained from a natural source with sp3 methine protons at the bridge positions (C-12/12'), which also exhibited broad-spectrum antibacterial activity. The racemate (±)-2 was semisynthesized and separated into enantiomers (+)-2 and (-)-2, and the absolute configurations were determined by specific rotation and ECD data. These metabolites exhibited potent antibacterial activity especially against drug-resistant strains (MRSA and MRCNS) with MIC values ranging from 1.0 to 1.9 μg/mL.
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Affiliation(s)
- Li Xing
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Yimin Chang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Xiaoqian Zhang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Xuewen Hou
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Yaxin Han
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Mudassir Shah
- Key Laboratory of Testing and Evaluation for Aquatic Product Safety and Quality, Ministry of Agriculture and Rural Affairs, Beijing 100125, People's Republic of China
- Department of Pharmacy, Abbottabad University of Science and Technology, Havellian, District Abbottabad 22010, KPK, Pakistan
| | - Tianjiao Zhu
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Jixing Peng
- Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, People's Republic of China
| | - Guojian Zhang
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
| | - Qian Che
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
| | - Dehai Li
- School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, People's Republic of China
- Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266237, People's Republic of China
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Main trends in the design of semi-synthetic antibiotics of a new generation. RUSSIAN CHEMICAL REVIEWS 2020. [PMCID: PMC7149660 DOI: 10.1070/rcr4892] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
Abstract
This review summarizes main advances achieved by Russian researchers in the synthesis and characterization of semi-synthetic antibiotics of a new generation in the period from 2004 to 2019. The following classes of compounds are considered as the basis for modification: polycyclic antibacterial glycopeptides of the vancomycin group, classical macrolides, antifungal polyene macrolides, the antitumour antibiotic olivomycin A, antitumour anthracyclines and broad-spectrum antibiotics, in particular, oligomycin A, heliomycin and some other. Main trends in the design of modern anti-infective and antitumour agents over this period are considered in relation to original natural antibiotics, which have been independently discovered by Russian researchers. It is shown that a new type of hybrid structures can, in principle, be synthesized based on glycopeptides, macrolides and other antibiotics, including heterodimers containing a new benzoxaborole pharmacophore. The review addresses the influence of the length of the spacer between two antibiotic molecules on the biological activity of hybrid structures. A combination of genetic engineering techniques and methods of organic synthesis is shown to be useful for the design of new potent antifungal antibiotics based on polyenes of the amphotericin B group. Many new semi-synthetic analogues exhibit important biological properties, such as a broad spectrum of activity and low toxicity. Emphasis is given to certain aspects related to investigation of a broad range of biological activity and mechanisms of action of new derivatives. The bibliography includes 101 references.
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Yin C, Jin L, Li S, Xu X, Zhang Y. Diversity and antagonistic potential of Actinobacteria from the fungus-growing termite Odontotermes formosanus. 3 Biotech 2019; 9:45. [PMID: 30729069 PMCID: PMC6342738 DOI: 10.1007/s13205-019-1573-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Accepted: 01/10/2019] [Indexed: 01/22/2023] Open
Abstract
43 Actinobacteria were isolated from the nest of Odontotermes formosanus. A phylogenetic analysis of 23 Actinobacteria isolates with different morphotypes showed that they did not form a monophyletic group. Antifungal bioassays exhibited that many strains inhibit both the termite cultivar Termitomyces and the competitor Xylaria. However, Actinobacteria inhibited the competitor Xylaria more severely than the termite cultural fungus Termitomyces. Furthermore, two Actinobacteria (Streptomyces sp. T33 and S. bellus T37) had a selective antifungal effect on Xylaria, with the inhibition zone of 25.5 and 8.9 mm, respectively. An actinomycin D was isolated from the strain T33 and had potent antifungal activity against Xylaria with IC50 value of less than 3.1 µg/mL. In addition, further bioassays showed that actinomycin D possessed potent antifungal activities against Magnaporthe grisea (IC50 = 0.9 µg/mL), Fusarium oxysporum f. sp. cucumerinum (IC50 = 2.2 µg/mL), Valsa mali (IC50 = 1.7 µg/mL), Rhizoctonia solani (IC50 = 10.3 µg/mL), Dothiorella gregaria (IC50 = 12.5 µg/mL) and F. oxysporum f. sp. mornordicae (IC50 = 14.3 µg/mL), which were comparable to those of referenced cycloheximide. The findings of the present study suggest that the termite-associated Actinobacteria have a potential to be used as microbial fungicide.
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Affiliation(s)
- Caiping Yin
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036 People’s Republic of China
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 32100 People’s Republic of China
| | - Liping Jin
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 32100 People’s Republic of China
| | - Shuai Li
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 32100 People’s Republic of China
| | - Xiao Xu
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 32100 People’s Republic of China
| | - Yinglao Zhang
- School of Life Sciences, Anhui Agricultural University, Hefei, 230036 People’s Republic of China
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua, 32100 People’s Republic of China
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Kamarudheen N, Rao KB. Fatty acyl compounds from marine Streptomyces griseoincarnatus strain HK12 against two major bio-film forming nosocomial pathogens; an in vitro and in silico approach. Microb Pathog 2019; 127:121-130. [DOI: 10.1016/j.micpath.2018.11.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2018] [Revised: 11/28/2018] [Accepted: 11/29/2018] [Indexed: 10/27/2022]
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Nadysev GY, Tikhomirov AS, Lin MH, Yang YT, Dezhenkova LG, Chen HY, Kaluzhny DN, Schols D, Shtil AA, Shchekotikhin AE, Chueh PJ. Aminomethylation of heliomycin: Preparation and anticancer characterization of the first series of semi-synthetic derivatives. Eur J Med Chem 2018; 143:1553-1562. [DOI: 10.1016/j.ejmech.2017.10.055] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 10/16/2017] [Accepted: 10/17/2017] [Indexed: 01/06/2023]
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Apoptosis of human prostate cancer cells induced by marine actinomycin X2 through the mTOR pathway compounded by MiRNA144. Anticancer Drugs 2016; 27:156-63. [DOI: 10.1097/cad.0000000000000309] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Zhu H, Swierstra J, Wu C, Girard G, Choi YH, van Wamel W, Sandiford SK, van Wezel GP. Eliciting antibiotics active against the ESKAPE pathogens in a collection of actinomycetes isolated from mountain soils. MICROBIOLOGY-SGM 2014; 160:1714-1725. [PMID: 24794971 DOI: 10.1099/mic.0.078295-0] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The rapid emergence of multidrug-resistant (MDR) bacterial pathogens poses a major threat for human health. In recent years, genome sequencing has unveiled many poorly expressed antibiotic clusters in actinomycetes. Here, we report a well-defined ecological collection of >800 actinomycetes obtained from sites in the Himalaya and Qinling mountains, and we used these in a concept study to see how efficiently antibiotics can be elicited against MDR pathogens isolated recently from the clinic. Using 40 different growth conditions, 96 actinomycetes were identified - predominantly Streptomyces - that produced antibiotics with efficacy against the MDR clinical isolates referred to as ESKAPE pathogens: Enterococcus faecium, Staphylococcus aureus, Klebsiella pneumoniae, Acinetobacter baumannii, Pseudomonas aeruginosa and/or Enterobacter cloacae. Antimicrobial activities that fluctuated strongly with growth conditions were correlated with specific compounds, including borrelidin, resistomycin, carbomethoxy-phenazine, and 6,7,8- and 5,6,8-trimethoxy-3-methylisocoumarin, of which the latter was not described previously. Our work provided insights into the potential of actinomycetes as producers of drugs with efficacy against clinical isolates that have emerged recently and also underlined the importance of targeting a specific pathogen.
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Affiliation(s)
- Hua Zhu
- Molecular Biotechnology, Institute of Biology, Molecular Biotechnology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Jasper Swierstra
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Centre, 's Gravendijkwal 230, 3015 CE Rotterdam, The Netherlands
| | - Changsheng Wu
- Molecular Biotechnology, Institute of Biology, Molecular Biotechnology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Geneviève Girard
- Molecular Biotechnology, Institute of Biology, Molecular Biotechnology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Young Hae Choi
- Natural Products Laboratory, Institute of Biology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Willem van Wamel
- Department of Medical Microbiology and Infectious Diseases, Erasmus Medical Centre, 's Gravendijkwal 230, 3015 CE Rotterdam, The Netherlands
| | - Stephanie K Sandiford
- Molecular Biotechnology, Institute of Biology, Molecular Biotechnology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
| | - Gilles P van Wezel
- Molecular Biotechnology, Institute of Biology, Molecular Biotechnology, Leiden University, Sylviusweg 72, 2333 BE Leiden, The Netherlands
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Zhang YL, Li S, Jiang DH, Kong LC, Zhang PH, Xu JD. Antifungal activities of metabolites produced by a termite-associated Streptomyces canus BYB02. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:1521-1524. [PMID: 23360202 DOI: 10.1021/jf305210u] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
Two main antifungal metabolites resistomycin and tetracenomycin D were isolated and purified from a termite-associated Streptomyces canus BYB02 by column chromatography. The structures of isolated compounds were determined on the basis of extensive spectroscopic analysis. Resistomycin possessed strong activities against mycelial growth of Valsa mali (IC(50) = 1.1 μg/mL) and Magnaporthe grisea (IC(50) = 3.8 μg/mL), which were comparable to those of referenced cycloheximide, with IC(50) values of 2.3 and 0.3 μg/mL, respectively. A further spore germination test showed that resistomycin exhibited potent reduction in spore germination for M. grisea , with an IC(50) value of 5.55 μg/mL. Finally, the in vivo antifungal activity experiment showed that resistomycin possessed significant preventive efficacy against rice blast, which was more potent than that of referenced carbendazim, with control efficacies of 66.8 and 58.7%, respectively. The present results suggest that resistomycin has potential to be used as a fungicide.
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Affiliation(s)
- Ying-lao Zhang
- College of Chemistry and Life Science, Zhejiang Normal University, Jinhua 321004, People's Republic of China.
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