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Chen L, Wang XN, Bi HY, Wang GY. Antimicrobial Biosynthetic Potential and Phylogenetic Analysis of Culturable Bacteria Associated with the Sponge Ophlitaspongia sp. from the Yellow Sea, China. Mar Drugs 2022; 20:md20100588. [PMID: 36286412 PMCID: PMC9605435 DOI: 10.3390/md20100588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Revised: 09/13/2022] [Accepted: 09/16/2022] [Indexed: 11/25/2022] Open
Abstract
Sponge-derived bacteria are considered to be a promising source of novel drugs, owing to their abundant secondary metabolites that have diverse biological activities. In this study, we explored the antimicrobial biosynthetic potential and phylogenetics of culturable bacteria associated with the sponge Ophlitaspongia sp. from the Yellow Sea, China. Using culture-dependent methods, we obtained 151 bacterial strains, which were then analysed for their antimicrobial activities against seven indicator strains. The results indicate that 94 (62.3%) of the 151 isolated strains exhibited antimicrobial activities and inhibited at least one of the indicator strains. Fifty-two strains were selected for further phylogenetic analysis using 16S rRNA gene sequencing, as well as for the presence of polyketide synthase (PKS) and non-ribosomal peptide synthetase (NRPS) genes. These 52 strains belonged to 20 genera from 18 families in 4 phyla, including Actinobacteria, Bacteroidetes, Firmicutes, and Proteobacteria. Five strains with PKS genes and ten strains with NRPS genes were detected. Among them, two strains contained both PKS and NRPS genes. Notoacmeibacter sp. strain HMA008 (class Alphaproteobacteria) exhibited potent antimicrobial activity; thus, whole genome sequencing methods were used to analyse its secondary metabolite biosynthetic gene clusters. The genome of HMA008 contained 12 biosynthetic gene clusters that potentially encode secondary metabolites belonging to compound classes such as non-ribosomal peptides, prodigiosin, terpene, β-lactones, and siderophore, among others. This study indicates that the sponge Ophlitaspongia sp. harbours diverse bacterial strains with antimicrobial properties and may serve as a potential source of bioactive compounds.
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Affiliation(s)
- Lei Chen
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
- Correspondence: (L.C.); (G.-Y.W.)
| | - Xue-Ning Wang
- Shanghai Center for Systems Biomedicine, Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hong-Yu Bi
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
| | - Guang-Yu Wang
- Department of Bioengineering, School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China
- Correspondence: (L.C.); (G.-Y.W.)
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2
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Rodriguez Jimenez A, Dechamps E, Giaux A, Goetghebuer L, Bauwens M, Willenz P, Flahaut S, Laport MS, George IF. The sponges Hymeniacidon perlevis and Halichondria panicea are reservoirs of antibiotic-producing bacteria against multi-drug resistant Staphylococcus aureus. J Appl Microbiol 2021; 131:706-718. [PMID: 33421270 DOI: 10.1111/jam.14999] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 01/04/2021] [Accepted: 01/06/2021] [Indexed: 12/12/2022]
Abstract
AIMS Evaluation of the antibacterial activity of cultivable bacteria associated with the marine sponges Hymeniacidon perlevis and Halichondria panicea against multi-drug-resistant Staphylococcus aureus. METHODS AND RESULTS One hundred and fourteen bacterial isolates were recovered from H. perlevis and H. panicea. Antibacterial action was demonstrated by 70% of the isolates against reference strain Staphylococcus aureus ATCC 29213 and by 31·6% against Pseudomonas aeruginosa ATCC 27853 in agar overlay assays. Antibacterial potential was further analysed against 36 multi-drug-resistant hospital Staphylococcus aureus strains with diverse resistance profiles. Among the 80 isolates positive against S. aureus ATCC 29213, 76·3% were active against at least one clinical S. aureus pathogen and 73·6% inhibited one or more methicillin-resistant (MRSA) and vancomycin non-susceptible S. aureus strains. In addition, 41·3% inhibited all vancomycin nonsusceptible MRSA strains. CONCLUSIONS Culturable bacteria associated to H. perlevis and H. panicea are promising sources of antibacterial compounds of great pharmaceutical interest. SIGNIFICANCE AND IMPACT OF THE STUDY This study was the first to explore the antibacterial potential of culturable bacteria associated with the marine sponges H. perlevis and H. panicea against MDR bacteria. This is the first report of antibacterial activity by Aquimarina, Denitrobaculum, Maribacter and Vagococcus isolates against MDR S. aureus strains, including vancomycin nonsusceptible and methicillin-resistant ones, against which new antibiotics are urgently needed.
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Affiliation(s)
- A Rodriguez Jimenez
- Ecology of Aquatic Systems, Université Libre de Bruxelles, Bruxelles, Belgique.,Ecological and Evolutionary Genomics, Université Libre de Bruxelles, Bruxelles, Belgique
| | - E Dechamps
- Ecology of Aquatic Systems, Université Libre de Bruxelles, Bruxelles, Belgique
| | - A Giaux
- Ecology of Aquatic Systems, Université Libre de Bruxelles, Bruxelles, Belgique
| | - L Goetghebuer
- Marine Biology, Université Libre de Bruxelles, Bruxelles, Belgique
| | - M Bauwens
- Marine Biology, Université Libre de Bruxelles, Bruxelles, Belgique
| | - P Willenz
- Marine Biology, Université Libre de Bruxelles, Bruxelles, Belgique.,Taxonomy & Phylogeny, Royal Belgian Institute of Natural Sciences, Bruxelles, Belgique
| | - S Flahaut
- Applied Microbiology, Université Libre de Bruxelles, Bruxelles, Belgique
| | - M S Laport
- Instituto de Microbiologia Paulo de Góes, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - I F George
- Ecology of Aquatic Systems, Université Libre de Bruxelles, Bruxelles, Belgique.,Marine Biology, Université Libre de Bruxelles, Bruxelles, Belgique
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3
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Wu CS, Wu DY, Wang SS. Bio-based polymer nanofiber with siliceous sponge spicules prepared by electrospinning: Preparation, characterisation, and functionalisation. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2019; 108:110506. [PMID: 31923929 DOI: 10.1016/j.msec.2019.110506] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Revised: 11/17/2019] [Accepted: 11/27/2019] [Indexed: 01/29/2023]
Abstract
Sponges, which are parasitic on plants widely found in lakes and oceans, represent a vast resource that has yet to be effectively utilised. Sponge spicules (SS), which contain high amounts of silica dioxide, form after long-term biomineralisation. In this study, SS attached to plant bodies were subjected to acid and heat treatments, followed by grinding, to obtain 10-40-nm siliceous sponge spicules (SSS). SSS and polylactic acid (PLA) were then combined to create 50-450-nm PLA/SSS composite nanofibers. The morphology and bioactivity of the electrospun PLA/SSS nanofibers were examined; the tensile, thermal, and water-resistant properties of the fibers were also evaluated. Our results showed a dramatic enhancement in the thermal and tensile properties of PLA with increasing SSS content; specifically, a 3 wt% increase in SSS content resulted in a 47 °C increase in the initial decomposition temperature and a 73.3-MPa increase in Young's modulus. The water resistance of PLA/SSS increased with SSS content, as indicated by the increase in the water contact angle compared with PLA nanofibers. PLA/SSS nanofibers also exhibited slightly enhanced human foreskin fibroblast cell proliferation, good cytocompatibility, and an antibacterial effect. The enhanced antibacterial and biodegradable properties of PLA/SSS are expected to be useful in biomedical material applications.
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Affiliation(s)
- Chin-San Wu
- Department of Applied Cosmetology, Kao Yuan University, Kaohsiung County, Taiwan 82101, Republic of China.
| | - Dung-Yi Wu
- Department of Materials Science and Engineering, Johns Hopkins University, Baltimore, MD 21218, USA
| | - Shan-Shue Wang
- Department of Applied Cosmetology, Kao Yuan University, Kaohsiung County, Taiwan 82101, Republic of China
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4
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Knobloch S, Jóhannsson R, Marteinsson V. Co-cultivation of the marine sponge Halichondria panicea and its associated microorganisms. Sci Rep 2019; 9:10403. [PMID: 31320673 PMCID: PMC6639338 DOI: 10.1038/s41598-019-46904-3] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 07/03/2019] [Indexed: 12/29/2022] Open
Abstract
Marine sponges host bacterial symbionts with biotechnological potential, yet isolation of true sponge symbionts remains difficult due to their host dependency. Moreover, attempts to grow sponges for their pharmacologically-active compounds outside of their habitat often results in a shift of their microbial community. In this study we evaluate suitable sponge cultivation methods that allow maintenance of both the marine sponge Halichondria panicea and its associated bacteria in an ex situ environment. In addition, we present a method for co-cultivation of sponge explants and microbes separated by a membrane in a multi-chamber device. Tests on ex situ cultivation of H. panicea under different controlled conditions showed that only high water exchange rates in the aquarium enabled maintenance of its dominant symbiont “Candidatus Halichondribacter symbioticus” at a high relative abundance in the sponge body, a prerequisite for co-cultivation. The bacterial enrichment retrieved from co-cultivation contained bacteria from nine different classes in addition to sequences corresponding to “Ca. H. symbioticus”. This represents an increase of the cultivable bacterial classes from H. panicea compared to standard isolation techniques on solid media plates. The current study provides insights into sponge-microbe maintenance under ex situ conditions and proposes a new method for the isolation of sponge-associated bacteria.
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Affiliation(s)
- Stephen Knobloch
- Microbiology Group, Department of Research and Innovation, Matís ohf., 113, Reykjavik, Iceland. .,Faculty of Life and Environmental Sciences, University of Iceland, 101, Reykjavík, Iceland.
| | - Ragnar Jóhannsson
- Marine and Freshwater Research Institute, Hafrannsóknastofnun, 101, Reykjavik, Iceland
| | - Viggó Marteinsson
- Microbiology Group, Department of Research and Innovation, Matís ohf., 113, Reykjavik, Iceland.,Faculty of Food Science and Nutrition, University of Iceland, 101, Reykjavik, Iceland
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5
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Li T, Ding T, Li J. Medicinal Purposes: Bioactive Metabolites from Marine-derived Organisms. Mini Rev Med Chem 2019; 19:138-164. [PMID: 28969543 DOI: 10.2174/1389557517666170927113143] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Revised: 04/25/2017] [Accepted: 06/17/2017] [Indexed: 12/20/2022]
Abstract
The environment of marine occupies about 95% biosphere of the world and it can be a critical source of bioactive compounds for humans to be explored. Special environment such as high salt, high pressure, low temperature, low nutrition and no light, etc. has made the production of bioactive substances different from terrestrial organisms. Natural ingredients secreted by marine-derived bacteria, fungi, actinomycetes, Cyanobacteria and other organisms have been separated as active pharmacophore. A number of evidences have demonstrated that bioactive ingredients isolated from marine organisms can be other means to discover novel medicines, since enormous natural compounds from marine environment were specified to be anticancer, antibacterial, antifungal, antitumor, cytotoxic, cytostatic, anti-inflammatory, antiviral agents, etc. Although considerable progress is being made within the field of chemical synthesis and engineering biosynthesis of bioactive compounds, marine environment still remains the richest and the most diverse sources for new drugs. This paper reviewed the natural compounds discovered recently from metabolites of marine organisms, which possess distinct chemical structures that may form the basis for the synthesis of new drugs to combat resistant pathogens of human life. With developing sciences and technologies, marine-derived bioactive compounds are still being found, showing the hope of solving the problems of human survival and sustainable development of resources and environment.
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Affiliation(s)
- Tingting Li
- Key Laboratory of Biotechnology and Bioresources Utilization (Dalian Minzu University), Ministry of Education, Dalian, Liaoning, 116600, China
| | - Ting Ding
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,College of Food Science and Technology, Bohai University; Food Safety Key Lab of Liaoning Province; National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products; Jinzhou, Liaoning, 121013, China
| | - Jianrong Li
- School of Food Science and Technology, Jiangnan University, Wuxi 214122, China.,College of Food Science and Technology, Bohai University; Food Safety Key Lab of Liaoning Province; National & Local Joint Engineering Research Center of Storage, Processing and Safety Control Technology for Fresh Agricultural and Aquatic Products; Jinzhou, Liaoning, 121013, China
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6
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Knobloch S, Jóhannsson R, Marteinsson V. Bacterial diversity in the marine spongeHalichondria paniceafrom Icelandic waters and host-specificity of its dominant symbiont “CandidatusHalichondribacter symbioticus”. FEMS Microbiol Ecol 2018; 95:5173036. [DOI: 10.1093/femsec/fiy220] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2018] [Accepted: 11/07/2018] [Indexed: 01/05/2023] Open
Affiliation(s)
- Stephen Knobloch
- Microbiology Group, Department of Research and Innovation, Matís ohf., Vinlandsleid 12, 113 Reykjavik, Iceland
- Faculty of Life and Environmental Sciences, University of Iceland, Saemundargata 2, 101 Reykjavík, Iceland
| | - Ragnar Jóhannsson
- Marine and Freshwater Research Institute, Hafrannsóknastofnun, Skúlagata 4, 101 Reykjavik, Iceland
| | - Viggó Marteinsson
- Microbiology Group, Department of Research and Innovation, Matís ohf., Vinlandsleid 12, 113 Reykjavik, Iceland
- Faculty of Food Science and Nutrition, University of Iceland, Saemundargata 2, 101 Reykjavik, Iceland
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7
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Bovio E, Garzoli L, Poli A, Prigione V, Firsova D, McCormack G, Varese G. The culturable mycobiota associated with three Atlantic sponges, including two new species: Thelebolus balaustiformis and T. spongiae. Fungal Syst Evol 2018; 1:141-167. [PMID: 32490365 PMCID: PMC7259239 DOI: 10.3114/fuse.2018.01.07] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
Abstract
Covering 70 % of Earth, oceans are at the same time the most common and the environment least studied by microbiologists. Considering the large gaps in our knowledge on the presence of marine fungi in the oceans, the aim of this research was to isolate and identify the culturable fungal community within three species of sponges, namely Dysidea fragilis, Pachymatisma johnstonia and Sycon ciliatum, collected in the Atlantic Ocean and never studied for their associated mycobiota. Applying different isolation methods, incubation temperatures and media, and attempting to mimic the marine and sponge environments, were fundamental to increase the number of cultivable taxa. Fungi were identified using a polyphasic approach, by means of morpho-physiological, molecular and phylogenetic techniques. The sponges revealed an astonishing fungal diversity represented by 87 fungal taxa. Each sponge hosted a specific fungal community with more than half of the associated fungi being exclusive of each invertebrate. Several species isolated and identified in this work, already known in terrestrial environment, were first reported in marine ecosystems (21 species) and in association with sponges (49 species), including the two new species Thelebolus balaustiformis and Thelebolus spongiae, demonstrating that oceans are an untapped source of biodiversity.
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Affiliation(s)
- E. Bovio
- Mycotheca Universitatis Taurinensis (MUT), Department of Life Sciences and Systems Biology, University of Turin, 10125 Turin, Italy
- Marine Natural Products Team, CNRS, Institute of Chemistry (UMR 7272), University Nice Côte d’Azur, Nice, 06100, France
| | - L. Garzoli
- Mycotheca Universitatis Taurinensis (MUT), Department of Life Sciences and Systems Biology, University of Turin, 10125 Turin, Italy
| | - A. Poli
- Mycotheca Universitatis Taurinensis (MUT), Department of Life Sciences and Systems Biology, University of Turin, 10125 Turin, Italy
| | - V. Prigione
- Mycotheca Universitatis Taurinensis (MUT), Department of Life Sciences and Systems Biology, University of Turin, 10125 Turin, Italy
| | - D. Firsova
- School of Chemistry, National University of Ireland Galway, Galway, Ireland
| | - G.P. McCormack
- Zoology, Ryan Institute, School of Natural Sciences, National University of Ireland Galway, Galway, Ireland
| | - G.C. Varese
- Mycotheca Universitatis Taurinensis (MUT), Department of Life Sciences and Systems Biology, University of Turin, 10125 Turin, Italy
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8
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Muthiyan R, Nambikkairaj B, Mahanta N, Immanuel T, Mandal RS, Kumaran K, De AK. Antiproliferative and Proapoptotic Activities of Marine Sponge Hyrtios erectus Extract on Breast Carcinoma Cell Line (MCF-7). Pharmacogn Mag 2017; 13:S41-S47. [PMID: 28479725 PMCID: PMC5407115 DOI: 10.4103/0973-1296.203983] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2016] [Revised: 04/28/2016] [Indexed: 01/01/2023] Open
Abstract
Background: Marine sponge is a rich natural resource of many pharmacologically important compounds. Objective: Marine sponge Hyrtios erectus, collected from North Bay, South Andaman Sea, India, was screened for potential antiproliferative and proapoptotic properties on a breast adenocarcinoma cell line (MCF-7). Materials and Methods: 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay was used to test the antiproliferative and cytotoxicity effects of the sponge extract. Analysis of apoptosis and cell cycle stages were done by flow cytometry. The expression of several apoptotic-related proteins in MCF-7 cells treated by the extract was evaluated by Western blot analysis. Various analytical techniques including Fourier transform infrared spectroscopy, gas chromatography-mass spectrometry, and nuclear magnetic resonance were employed to determine the identity of the active compounds in the sponge extract. Results: N-Hexane extract of the sponge inhibited proliferation of the MCF-7 cell line in a dose- and time-dependent manner. Exposure of the sponge extract triggered apoptosis of the MCF-7 cells, induced DNA fragmentation, and arrested the cells in G2/M phase. Treatment of the sponge extract induced downregulation of antiapoptotic Bcl-2 protein and upregulation of Bax, caspase-3, caspase-9, and fragmented poly(ADP ribose)polymerase proteins in MCF-7 cells. Five bioactive compounds have been identified in the extract. Conclusion: The antiproliferative and proapoptotic activities of the tested extract suggested the pharmacologic potential of the identified compounds. Further characterization of the identified compounds are in progress. SUMMARY The N-hexane extract of the marine sponge Hyrtios erectus, collected from North Bay, South Andaman Sea, India, showed potential antiproliferative and proapoptotic properties against a breast adenocarcinoma cell line (MCF-7). The sponge extract retarded the growth of breast carcinoma cell line MCF-7 cells in a time- and dose-dependent manner. The sponge extract induced apoptosis of breast cancer cell line MCF-7 and arrested cells in G2/M phase. The sponge extract induced downregulation of Bcl-2 protein in MCF-7 cell line and upregulation of Bax, caspase-3, and cleaved PARP. Five bioactive compounds have been identified in the extract.
Abbreviations used: GC-MS: Gas chromatography-mass spectrometry; FT-IR: Fourier transform infrared spectroscopy; NMR: Nuclear magnetic resonance; MTT: 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide.
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Affiliation(s)
| | - Balwin Nambikkairaj
- Department of Zoology, Voorhees College, Thiruvalluvar University, Vellore, India
| | - Nilkamal Mahanta
- Department of Chemistry, Institute for Genomic Biology, University of Illinois, Urbana-Champaign, Illinois, USA
| | - Titus Immanuel
- Division of Fisheries Sciences, Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India
| | - Rahul Shubhra Mandal
- Biomedical Informatics Centre, National Institute of Cholera and Enteric Diseases, Beliaghata, Kolkata, India
| | | | - Arun Kumar De
- Department of Animal Sciences, Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands, India.,Department of Animal Sciences, University of Illinois, Urbana-Champaign, Illinois, USA
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9
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Ye J, Zhou F, Al-Kareef AMQ, Wang H. Anticancer agents from marine sponges. JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH 2014; 17:64-88. [PMID: 25402340 DOI: 10.1080/10286020.2014.970535] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
Marine sponges are currently one of the richest sources of anticancer active compounds found in the marine ecosystems. More than 5300 different known metabolites are from sponges and their associated microorganisms. To survive in the complicated marine environment, most of the sponge species have evolved chemical means to defend against predation. Such chemical adaptation produces many biologically active secondary metabolites including anticancer agents. This review highlights novel secondary metabolites in sponges which inhibited diverse cancer species in the recent 5 years. These natural products of marine sponges are categorized based on various chemical characteristics.
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Affiliation(s)
- Jianjun Ye
- a College of Pharmaceutical Science, Zhejiang University of Technology , Hangzhou 310014 , China
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10
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Alex A, Silva V, Vasconcelos V, Antunes A. Evidence of unique and generalist microbes in distantly related sympatric intertidal marine sponges (Porifera: Demospongiae). PLoS One 2013; 8:e80653. [PMID: 24265835 PMCID: PMC3827218 DOI: 10.1371/journal.pone.0080653] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2013] [Accepted: 10/07/2013] [Indexed: 12/24/2022] Open
Abstract
The diversity and specificity of microbial communities in marine environments is a key aspect of the ecology and evolution of both the eukaryotic hosts and their associated prokaryotes. Marine sponges harbor phylogenetically diverse and complex microbial lineages. Here, we investigated the sponge bacterial community and distribution patterns of microbes in three sympatric intertidal marine demosponges, Hymeniacidon perlevis, Ophlitaspongia papilla and Polymastia penicillus, from the Atlantic coast of Portugal using classical isolation techniques and 16S rRNA gene clone libraries. Microbial composition assessment, with nearly full-length 16S rRNA gene sequences (ca. 1400 bp) from the isolates (n = 31) and partial sequences (ca. 280 bp) from clone libraries (n = 349), revealed diverse bacterial communities and other sponge-associated microbes. The majority of the bacterial isolates were members of the order Vibrionales and other symbiotic bacteria like Pseudovibrio ascidiaceiocola, Roseobacter sp., Hahellaceae sp. and Cobetia sp. Extended analyses using ecological metrics comprising 142 OTUs supported the clear differentiation of bacterial community profiles among the sponge hosts and their ambient seawater. Phylogenetic analyses were insightful in defining clades representing shared bacterial communities, particularly between H. perlevis and the geographically distantly-related H. heliophila, but also among other sponges. Furthermore, we also observed three distinct and unique bacterial groups, Betaproteobactria (~81%), Spirochaetes (~7%) and Chloroflexi (~3%), which are strictly maintained in low-microbial-abundance host species O. papilla and P. penicillus. Our study revealed the largely generalist nature of microbial associations among these co-occurring intertidal marine sponges.
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Affiliation(s)
- Anoop Alex
- CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Porto, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Vitor Silva
- CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Porto, Portugal
| | - Vitor Vasconcelos
- CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Porto, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
| | - Agostinho Antunes
- CIMAR/CIIMAR, Centro Interdisciplinar de Investigação Marinha e Ambiental, Universidade do Porto, Porto, Portugal
- Departamento de Biologia, Faculdade de Ciências, Universidade do Porto, Porto, Portugal
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11
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Ferreira M, Blanco L, Garrido A, Vieites JM, Cabado AG. In vitro approaches to evaluate toxicity induced by organotin compounds tributyltin (TBT), dibutyltin (DBT), and monobutyltin (MBT) in neuroblastoma cells. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2013; 61:4195-4203. [PMID: 23534342 DOI: 10.1021/jf3050186] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The toxic effects of the organotin compounds (OTCs) monobutyltin (MBT), dibutyltin (DBT), and tributyltin (TBT) were evaluated in vitro in a neuroblastoma human cell line. Mechanisms of cell death, apoptosis versus necrosis, were studied by using several markers: inhibition of cell viability and proliferation, F-actin, and mitochondrial membrane potential changes as well as reactive oxygen species (ROS) production and DNA fragmentation. The most toxic effects were detected with DBT and TBT even at very low concentrations (0.1-1 μM). In contrast, MBT induced lighter cytotoxic changes at the higher doses tested. None of the studied compounds stimulated propidium iodide uptake, although the most toxic chemical, TBT, caused lactate dehydrogenase release at the higher concentrations tested. These findings suggest that in neuroblastoma, OTC-induced cytotoxicity involves different pathways depending on the compound, concentration, and incubation time. A screening method for DBT and TBT quantification based on cell viability loss was developed, allowing a fast detection alternative to complex methodology.
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Affiliation(s)
- Martiña Ferreira
- Food Safety Division, ANFACO-CECOPESCA, Campus Univ. 16, 36310 Vigo PO, Spain
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12
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Beedessee G, Ramanjooloo A, Aubert G, Eloy L, Surnam-Boodhun R, Soest RWMV, Cresteil T, Marie DEP. Cytotoxic activities of hexane, ethyl acetate and butanol extracts of marine sponges from Mauritian Waters on human cancer cell lines. ENVIRONMENTAL TOXICOLOGY AND PHARMACOLOGY 2012; 34:397-408. [PMID: 22743579 DOI: 10.1016/j.etap.2012.05.013] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/13/2012] [Revised: 05/24/2012] [Accepted: 05/29/2012] [Indexed: 06/01/2023]
Abstract
The ocean is an exceptional source of natural products with many of them exhibiting novel structural features and bioactivity. As one of the most interesting phylum with respect to pharmacological active marine compounds, Poriferas have been investigated widely in the last few decades. A total of 60 organic extracts (hexane, ethyl acetate and butanol) from 20 species of marine sponges from Mauritius were screened at 50μg/ml in an in vitro screening assay against 9 human cancer cell lines. From these tested extracts, many exhibited pronounced cytotoxic effect at least in one of the cell lines and cell type cytotoxic specificity was observed. 27% of ethyl acetate, 11% of hexane and 2% of butanol extracts were found to possess a cytotoxicity ≥75% on 9 different cancer cell lines with the sponges Petrosia sp. 1, Petrosia sp. 2, Pericharax heteroraphis and Jaspis sp. being the most active. Overall, the HL-60cells were much more sensitive to most of the extracts than the other cell lines. We further evaluated the properties of the ethyl acetate (JDE) and hexane extract (JDH) of one sponge, Jaspis sp. on KB cells. JDE displayed a smaller IC(50) than JDH. Clonogenic assay confirmed the antiproliferative effect of both extracts while mitochondrial membrane potential change and microscopic analysis demonstrated extracts-induced apoptosis. Treatment with 100ng/ml of JDE led to a significant increase of cells (24h: 4.02%; 48h: 26.23%) in sub-G1 phase. The cytotoxic properties of the tested extracts from these sponges suggest the presence of compounds with pharmacological potential and are currently undergoing fractionation to isolate the active constituents.
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Affiliation(s)
- Girish Beedessee
- Mauritius Oceanography Institute, France Centre, Quatre-Bornes, Mauritius
| | - Avin Ramanjooloo
- Mauritius Oceanography Institute, France Centre, Quatre-Bornes, Mauritius
| | - Geneviève Aubert
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Centre de Recherche de Gif, Gif sur Yvette, France
| | - Laure Eloy
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Centre de Recherche de Gif, Gif sur Yvette, France
| | | | - Rob W M van Soest
- Netherlands Centre for Biodiversity Naturalis, Leiden, The Netherlands
| | - Thierry Cresteil
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Centre de Recherche de Gif, Gif sur Yvette, France
| | - Daniel E P Marie
- Mauritius Oceanography Institute, France Centre, Quatre-Bornes, Mauritius.
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