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Dang M, Nguyen HTT, Ngo VM, Dien TD, Thang TN, Thao NTP, Dang BT, Dong HT. Acute death in farmed marine fishes caused by sea anemone (Bunodeopsis sp.) in Central Vietnam. JOURNAL OF FISH DISEASES 2022; 45:1799-1803. [PMID: 35932484 DOI: 10.1111/jfd.13701] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2022] [Revised: 07/21/2022] [Accepted: 07/27/2022] [Indexed: 06/15/2023]
Affiliation(s)
- Mai Dang
- Institute for Veterinary Research and Development of Central Vietnam, Nha Trang, Vietnam
| | - Hai Thanh T Nguyen
- Institute for Biotechnology and Environment, Nha Trang University, Nha Trang, Vietnam
| | - Van Manh Ngo
- Institute of Aquaculture, Nha Trang University, Nha Trang, Vietnam
| | - Tran Duc Dien
- Coastal Branch, Vietnam - Russia Tropical Center, Nha Trang, Vietnam
| | - Tran Ngoc Thang
- Institute of Aquaculture, Nha Trang University, Nha Trang, Vietnam
| | - Nguyen Thi Phương Thao
- South Research Sub-Institute for Marine Fisheries, Research Institute for Marine Fisheries, Vung Tau, Vietnam
| | - Binh Thuy Dang
- Institute for Biotechnology and Environment, Nha Trang University, Nha Trang, Vietnam
| | - Ha Thanh Dong
- AARM/FAB, School of Environment, Resources and Development, Asian Institute of Technology, Pathum Thani, Thailand
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Ancient plant-like terpene biosynthesis in corals. Nat Chem Biol 2022; 18:664-669. [PMID: 35606558 PMCID: PMC9179088 DOI: 10.1038/s41589-022-01026-2] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Accepted: 03/30/2022] [Indexed: 01/16/2023]
Abstract
Octocorals are major contributors of terpenoid chemical diversity in the ocean. Natural products from other sessile marine animals are primarily biosynthesized by symbiotic microbes rather than by the host. Here, we challenge this long-standing paradigm by describing a monophyletic lineage of animal-encoded terpene cyclases (TCs) ubiquitous in octocorals. We characterized 15 TC enzymes from nine genera, several of which produce precursors of iconic coral-specific terpenoids, such as pseudopterosin, lophotoxin and eleutherobin. X-ray crystallography revealed that coral TCs share conserved active site residues and structural features with bacterial TCs. The identification of coral TCs enabled the targeted identification of the enzyme that constructs the coral-exclusive capnellane scaffold. Several TC genes are colocalized with genes that encode enzymes known to modify terpenes. This work presents an example of biosynthetic capacity in the kingdom Animalia that rivals the chemical complexity generated by plants, unlocking the biotechnological potential of octocorals for biomedical applications.
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Elnahriry KA, Wai DC, Krishnarjuna B, Badawy NN, Chittoor B, MacRaild CA, Williams-Noonan BJ, Surm JM, Chalmers DK, Zhang AH, Peigneur S, Mobli M, Tytgat J, Prentis P, Norton RS. Structural and functional characterisation of a novel peptide from the Australian sea anemone Actinia tenebrosa. Toxicon 2019; 168:104-112. [DOI: 10.1016/j.toxicon.2019.07.002] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/29/2019] [Accepted: 07/08/2019] [Indexed: 12/11/2022]
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Zhang R, Jin L, Zhang N, Petridis AK, Eckert T, Scheiner-Bobis G, Bergmann M, Scheidig A, Schauer R, Yan M, Wijesundera SA, Nordén B, Chatterjee BK, Siebert HC. The Sialic Acid-Dependent Nematocyst Discharge Process in Relation to Its Physical-Chemical Properties Is A Role Model for Nanomedical Diagnostic and Therapeutic Tools. Mar Drugs 2019; 17:E469. [PMID: 31409009 PMCID: PMC6722915 DOI: 10.3390/md17080469] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2019] [Revised: 08/01/2019] [Accepted: 08/06/2019] [Indexed: 12/13/2022] Open
Abstract
Formulas derived from theoretical physics provide important insights about the nematocyst discharge process of Cnidaria (Hydra, jellyfishes, box-jellyfishes and sea-anemones). Our model description of the fastest process in living nature raises and answers questions related to the material properties of the cell- and tubule-walls of nematocysts including their polysialic acid (polySia) dependent target function. Since a number of tumor-cells, especially brain-tumor cells such as neuroblastoma tissues carry the polysaccharide chain polySia in similar concentration as fish eggs or fish skin, it makes sense to use these findings for new diagnostic and therapeutic approaches in the field of nanomedicine. Therefore, the nematocyst discharge process can be considered as a bionic blue-print for future nanomedical devices in cancer diagnostics and therapies. This approach is promising because the physical background of this process can be described in a sufficient way with formulas presented here. Additionally, we discuss biophysical and biochemical experiments which will allow us to define proper boundary conditions in order to support our theoretical model approach. PolySia glycans occur in a similar density on malignant tumor cells than on the cell surfaces of Cnidarian predators and preys. The knowledge of the polySia-dependent initiation of the nematocyst discharge process in an intact nematocyte is an essential prerequisite regarding the further development of target-directed nanomedical devices for diagnostic and therapeutic purposes. The theoretical description as well as the computationally and experimentally derived results about the biophysical and biochemical parameters can contribute to a proper design of anti-tumor drug ejecting vessels which use a stylet-tubule system. Especially, the role of nematogalectins is of interest because these bridging proteins contribute as well as special collagen fibers to the elastic band properties. The basic concepts of the nematocyst discharge process inside the tubule cell walls of nematocysts were studied in jellyfishes and in Hydra which are ideal model organisms. Hydra has already been chosen by Alan Turing in order to figure out how the chemical basis of morphogenesis can be described in a fundamental way. This encouraged us to discuss the action of nematocysts in relation to morphological aspects and material requirements. Using these insights, it is now possible to discuss natural and artificial nematocyst-like vessels with optimized properties for a diagnostic and therapeutic use, e.g., in neurooncology. We show here that crucial physical parameters such as pressure thresholds and elasticity properties during the nematocyst discharge process can be described in a consistent and satisfactory way with an impact on the construction of new nanomedical devices.
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Affiliation(s)
- Ruiyan Zhang
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng 252059, China.
| | - Li Jin
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng 252059, China
| | - Ning Zhang
- Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng 252059, China
- RI-B-NT-Research Institute of Bioinformatics and Nanotechnology, Schauenburgerstr. 116, 24118 Kiel, Germany
| | - Athanasios K Petridis
- Neurochirurgische Klinik, Universität Düsseldorf, Geb. 11.54, Moorenstraße 5, Düsseldorf 40255, Germany
| | - Thomas Eckert
- Institut für Veterinärphysiolgie und-Biochemie, Fachbereich Veterinärmedizin, Justus-Liebig-Universität Gießen, Frankfurter Str. 100, 35392 Gießen, Germany
- Department of Chemistry and Biology, University of Applied Sciences Fresenius, Limburger Str. 2, 65510 Idstein, Germany
- RISCC-Research Institute for Scientific Computing and Consulting, Ludwig-Schunk-Str. 15, 35452 Heuchelheim, Germany
| | - Georgios Scheiner-Bobis
- Institut für Veterinärphysiolgie und-Biochemie, Fachbereich Veterinärmedizin, Justus-Liebig-Universität Gießen, Frankfurter Str. 100, 35392 Gießen, Germany
| | - Martin Bergmann
- Institut für Veterinäranatomie, Histologie und Embryologie, Fachbereich Veterinärmedizin, Justus-Liebig-Universität Gießen, Frankfurter Str. 98, 35392 Giessen, Germany
| | - Axel Scheidig
- Zoologisches Institut-Strukturbiologie, Zentrum für Biochemie und Molekularbiologie, Christian-Albrechts-Universität, Am Botanischen Garten 19, 24118 Kiel, Germany
| | - Roland Schauer
- Biochemisches Institut, Christian-Albrechts Universität Kiel, Olshausenstrasse 40, Kiel 24098, Germany
| | - Mingdi Yan
- Department of Chemistry, University of Massachusetts Lowell, 1 University Avenue, Lowell, MA 01854, USA
| | - Samurdhi A Wijesundera
- Department of Chemistry, University of Massachusetts Lowell, 1 University Avenue, Lowell, MA 01854, USA
| | - Bengt Nordén
- Department of Chemical and Biological Engineering, Chalmers University of Technology, SE-41296 Gothenburg, Sweden
| | - Barun K Chatterjee
- Department of Physics, Bose Institute, 93/1, A P C Road, Kolkata-700009, India
| | - Hans-Christian Siebert
- RI-B-NT-Research Institute of Bioinformatics and Nanotechnology, Schauenburgerstr. 116, 24118 Kiel, Germany.
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Gundlach KA, Watson GM. Self/Non-Self Recognition Affects Cnida Discharge and Tentacle Contraction in the Sea Anemone Haliplanella luciae. THE BIOLOGICAL BULLETIN 2018; 235:83-90. [PMID: 30358448 DOI: 10.1086/699564] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Certain species of sea anemone live in tightly packed communities, among clonemates and non-clonemates. Competition for space leads to intraspecific and interspecific aggressive interactions among anemones. The initial aggressive interactions appear to involve reciprocal discharge of cnidae triggered by contact with non-self feeding tentacles. We asked whether molecules contained in anemone-derived mucus constituted an important cue alone or in combination with cell surface molecules in stimulating aggressive or avoidance behaviors. In this study, we found that self and non-self stimuli differentially influenced two effector systems: cnida discharge and tentacle contraction. Interspecific mucus enhanced nematocyst discharge by 44% and spirocyst discharge by 90%, as compared to baseline discharge obtained in seawater alone. Conspecific stimuli accompanying touch inhibited specific tentacle contractions occurring on the far side of anemones relative to the site of contact. The greatest tentacle contractions occurred with exposure to interspecific mucus and tissue. Thus, several receptor systems are involved that integrate chemical and mechanical cues in order to initiate appropriate and graded effector responses during competition for space.
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Krishnarjuna B, MacRaild CA, Sunanda P, Morales RAV, Peigneur S, Macrander J, Yu HH, Daly M, Raghothama S, Dhawan V, Chauhan S, Tytgat J, Pennington MW, Norton RS. Structure, folding and stability of a minimal homologue from Anemonia sulcata of the sea anemone potassium channel blocker ShK. Peptides 2018; 99:169-178. [PMID: 28993277 DOI: 10.1016/j.peptides.2017.10.001] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Revised: 10/03/2017] [Accepted: 10/05/2017] [Indexed: 01/01/2023]
Abstract
Peptide toxins elaborated by sea anemones target various ion-channel sub-types. Recent transcriptomic studies of sea anemones have identified several novel candidate peptides, some of which have cysteine frameworks identical to those of previously reported sequences. One such peptide is AsK132958, which was identified in a transcriptomic study of Anemonia sulcata and has a cysteine framework similar to that of ShK from Stichodactyla helianthus, but is six amino acid residues shorter. We have determined the solution structure of this novel peptide using NMR spectroscopy. The disulfide connectivities and structural scaffold of AsK132958 are very similar to those of ShK but the structure is more constrained. Toxicity assays were performed using grass shrimp (Palaemonetes sp) and Artemia nauplii, and patch-clamp electrophysiology assays were performed to assess the activity of AsK132958 against a range of voltage-gated potassium (KV) channels. AsK132958 showed no activity against grass shrimp, Artemia nauplii, or any of the KV channels tested, owing partly to the absence of a functional Lys-Tyr dyad. Three AsK132958 analogues, each containing a Tyr in the vicinity of Lys19, were therefore generated in an effort to restore binding, but none showed activity against any of KV channels tested. However, AsK132958 and its analogues are less susceptible to proteolysis than that of ShK. Our structure suggests that Lys19, which might be expected to occupy the pore of the channel, is not sufficiently accessible for binding, and therefore that AsK132958 must have a distinct functional role that does not involve KV channels.
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Affiliation(s)
- Bankala Krishnarjuna
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Christopher A MacRaild
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Punnepalli Sunanda
- NMR Research Centre, Indian Institute of Science, Bangalore 560012, India
| | - Rodrigo A V Morales
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia
| | - Steve Peigneur
- Toxicology and Pharmacology, University of Leuven, O&N 2, Herestraat 49, P.O. Box 922, 3000, Leuven, Belgium
| | - Jason Macrander
- Department of Evolution, Ecology, Organismal Biology, Ohio State University, 1315 Kinnear Rd, Columbus, OH 43212, USA; Department of Biology, University of North Carolina at Charlotte, 9201 University City Blvd, Charlotte, NC 28223, USA
| | - Heidi H Yu
- Infection and Immunity Program, Monash Biomedicine Discovery Institute and Department of Microbiology, Monash University, VIC 3800, Australia
| | - Marymegan Daly
- Department of Evolution, Ecology, Organismal Biology, Ohio State University, 1315 Kinnear Rd, Columbus, OH 43212, USA
| | | | - Vikas Dhawan
- Peptides International, Louisville, KY 40299, USA
| | | | - Jan Tytgat
- Toxicology and Pharmacology, University of Leuven, O&N 2, Herestraat 49, P.O. Box 922, 3000, Leuven, Belgium
| | | | - Raymond S Norton
- Medicinal Chemistry, Monash Institute of Pharmaceutical Sciences, Monash University, 381 Royal Parade, Parkville, VIC 3052, Australia.
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Menard SS, Watson GM. Evidence for two populations of hair bundles in the sea anemone, Nematostella vectensis. Comp Biochem Physiol A Mol Integr Physiol 2017; 208:14-23. [DOI: 10.1016/j.cbpa.2017.03.006] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2016] [Revised: 03/07/2017] [Accepted: 03/11/2017] [Indexed: 10/20/2022]
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Bastos CLQ, Varela AS, Ferreira SP, Nornberg BF, Boyle RT. Who knows not where an anemone does wear his sting? Could polypeptides released from the columnar vesicles of Bunodosoma cangicum induce apoptosis in the ZF-L cell line? Toxicon 2016; 124:73-82. [PMID: 27794434 DOI: 10.1016/j.toxicon.2016.10.014] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 10/17/2016] [Accepted: 10/25/2016] [Indexed: 10/20/2022]
Abstract
We provide ultrastructural and cytological evidence that the tentacles of the sea anemone Bunodosoma cangicum does not contain cytotoxic venom. However, we show that the stimulated secretion of an apparent mixture of biomolecules containing polypeptides from the columnar vesicles of Bunodosoma cangicum is apparently a potent inducer of apoptosis in the zebrafish cell line, ZF-L. Microscopic fluorescence, cell morphology and flow cytometric assays confirm the apoptotic activity. Crude vesicle venom was partially purified by size exclusion chromatography. PAGE analysis shows that this venom contains low weight polypeptides but no measurable protein. The apoptotic activity is heat labile, and the observed peptides concurrent with this activity have a molecular weight of approximately 2000 Da. This manuscript is the first report of biologically active molecules and peptides associated with columnar vesicles of anemones, and the first to confirm that the tentacles of B. cangicum do not contain cytotoxic venom, and express spirocytes exclusively.
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Affiliation(s)
- Claudio L Q Bastos
- Programa de Pós-Graduação em Ciências Fisiológicas - Fisiologia Animal Comparada, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Antonio Sergio Varela
- Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Shana Pires Ferreira
- Programa de Pós-Graduação em Ciências Fisiológicas - Fisiologia Animal Comparada, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil; Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Bruna Felix Nornberg
- Programa de Pós-Graduação em Ciências Fisiológicas - Fisiologia Animal Comparada, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil; Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil
| | - Robert Tew Boyle
- Programa de Pós-Graduação em Ciências Fisiológicas - Fisiologia Animal Comparada, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil; Instituto de Ciências Biológicas, Universidade Federal do Rio Grande - FURG, Rio Grande, RS, Brazil.
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Allaire KM, Watson GM. Rho participates in chemoreceptor-induced changes in morphology to hair bundle mechanoreceptors of the sea anemone, Nematostella vectensis. Comp Biochem Physiol A Mol Integr Physiol 2013; 165:139-48. [DOI: 10.1016/j.cbpa.2013.03.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2012] [Revised: 03/02/2013] [Accepted: 03/02/2013] [Indexed: 10/27/2022]
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