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Dashevsky D, Harris RJ, Zdenek CN, Benard-Valle M, Alagón A, Portes-Junior JA, Tanaka-Azevedo AM, Grego KF, Sant'Anna SS, Frank N, Fry BG. Red-on-Yellow Queen: Bio-Layer Interferometry Reveals Functional Diversity Within Micrurus Venoms and Toxin Resistance in Prey Species. J Mol Evol 2024; 92:317-328. [PMID: 38814340 PMCID: PMC11168994 DOI: 10.1007/s00239-024-10176-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Accepted: 05/03/2024] [Indexed: 05/31/2024]
Abstract
Snakes in the family Elapidae largely produce venoms rich in three-finger toxins (3FTx) that bind to the α 1 subunit of nicotinic acetylcholine receptors (nAChRs), impeding ion channel activity. These neurotoxins immobilize the prey by disrupting muscle contraction. Coral snakes of the genus Micrurus are specialist predators who produce many 3FTx, making them an interesting system for examining the coevolution of these toxins and their targets in prey animals. We used a bio-layer interferometry technique to measure the binding interaction between 15 Micrurus venoms and 12 taxon-specific mimotopes designed to resemble the orthosteric binding region of the muscular nAChR subunit. We found that Micrurus venoms vary greatly in their potency on this assay and that this variation follows phylogenetic patterns rather than previously reported patterns of venom composition. The long-tailed Micrurus tend to have greater binding to nAChR orthosteric sites than their short-tailed relatives and we conclude this is the likely ancestral state. The repeated loss of this activity may be due to the evolution of 3FTx that bind to other regions of the nAChR. We also observed variations in the potency of the venoms depending on the taxon of the target mimotope. Rather than a pattern of prey-specificity, we found that mimotopes modeled after snake nAChRs are less susceptible to Micrurus venoms and that this resistance is partly due to a characteristic tryptophan → serine mutation within the orthosteric site in all snake mimotopes. This resistance may be part of a Red Queen arms race between coral snakes and their prey.
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Affiliation(s)
- Daniel Dashevsky
- Australian National Insect Collection, Commonwealth Scientific and Industrial Research Organisation, Canberra, ACT, 2601, Australia.
| | - Richard J Harris
- Venom Evolution Lab, School of the Environment, The University of Queensland, Saint Lucia, QLD, 4072, Australia
- Australian Institute of Marine Science, Cape Cleveland, QLD, 4810, Australia
| | - Christina N Zdenek
- Celine Frere Group, School of the Environment, The University of Queensland, Saint Lucia, QLD, 4072, Australia
| | - Melisa Benard-Valle
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens Lyngby, Region Hovedstaden, Denmark
| | - Alejandro Alagón
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, 62210, Cuernavaca, Morelos, Mexico
| | - José A Portes-Junior
- Laboratório de Coleções Zoológicas, Instituto Butantan, São Paulo, São Paulo, 05503-900, Brazil
| | - Anita M Tanaka-Azevedo
- Laboratório de Herpetologia, Instituto Butantan, São Paulo, São Paulo, 05503-900, Brazil
| | - Kathleen F Grego
- Laboratório de Herpetologia, Instituto Butantan, São Paulo, São Paulo, 05503-900, Brazil
| | - Sávio S Sant'Anna
- Laboratório de Herpetologia, Instituto Butantan, São Paulo, São Paulo, 05503-900, Brazil
| | - Nathaniel Frank
- MToxins Venom Lab, 717 Oregon Street, Oshkosh, WI, 54902, USA
| | - Bryan G Fry
- Venom Evolution Lab, School of the Environment, The University of Queensland, Saint Lucia, QLD, 4072, Australia
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Benard-Valle M, Wouters Y, Ljungars A, Nguyen GTT, Ahmadi S, Ebersole TW, Dahl CH, Guadarrama-Martínez A, Jeppesen F, Eriksen H, Rodríguez-Barrera G, Boddum K, Jenkins TP, Bjørn SP, Schoffelen S, Voldborg BG, Alagón A, Laustsen AH. In vivo neutralization of coral snake venoms with an oligoclonal nanobody mixture in a murine challenge model. Nat Commun 2024; 15:4310. [PMID: 38773068 PMCID: PMC11109316 DOI: 10.1038/s41467-024-48539-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2023] [Accepted: 05/02/2024] [Indexed: 05/23/2024] Open
Abstract
Oligoclonal mixtures of broadly-neutralizing antibodies can neutralize complex compositions of similar and dissimilar antigens, making them versatile tools for the treatment of e.g., infectious diseases and animal envenomations. However, these biotherapeutics are complicated to develop due to their complex nature. In this work, we describe the application of various strategies for the discovery of cross-neutralizing nanobodies against key toxins in coral snake venoms using phage display technology. We prepare two oligoclonal mixtures of nanobodies and demonstrate their ability to neutralize the lethality induced by two North American coral snake venoms in mice, while individual nanobodies fail to do so. We thus show that an oligoclonal mixture of nanobodies can neutralize the lethality of venoms where the clinical syndrome is caused by more than one toxin family in a murine challenge model. The approaches described may find utility for the development of advanced biotherapeutics against snakebite envenomation and other pathologies where multi-epitope targeting is beneficial.
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Affiliation(s)
- Melisa Benard-Valle
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Yessica Wouters
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Anne Ljungars
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Giang Thi Tuyet Nguyen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Shirin Ahmadi
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Tasja Wainani Ebersole
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Camilla Holst Dahl
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Alid Guadarrama-Martínez
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Cuernavaca, Mor, 62210, México
| | - Frederikke Jeppesen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Helena Eriksen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Gibran Rodríguez-Barrera
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Cuernavaca, Mor, 62210, México
| | - Kim Boddum
- Sophion Bioscience, DK-2750, Ballerup, Denmark
| | - Timothy Patrick Jenkins
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Sara Petersen Bjørn
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Sanne Schoffelen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Bjørn Gunnar Voldborg
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark
| | - Alejandro Alagón
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología, Universidad Nacional Autónoma de México, Avenida Universidad 2001, Cuernavaca, Mor, 62210, México
| | - Andreas Hougaard Laustsen
- Department of Biotechnology and Biomedicine, Technical University of Denmark, DK-2800, Kongens, Lyngby, Denmark.
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Saldarriaga-Córdoba M, Clavero-León C, Rey-Suarez P, Nuñez-Rangel V, Avendaño-Herrera R, Solano-González S, Alzate JF. Unveiling Novel Kunitz- and Waprin-Type Toxins in the Micrurus mipartitus Coral Snake Venom Gland: An In Silico Transcriptome Analysis. Toxins (Basel) 2024; 16:224. [PMID: 38787076 PMCID: PMC11126030 DOI: 10.3390/toxins16050224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2024] [Revised: 04/23/2024] [Accepted: 05/08/2024] [Indexed: 05/25/2024] Open
Abstract
Kunitz-type peptide expression has been described in the venom of snakes of the Viperidae, Elapidae and Colubridae families. This work aimed to identify these peptides in the venom gland transcriptome of the coral snake Micrurus mipartitus. Transcriptomic analysis revealed a high diversity of venom-associated Kunitz serine protease inhibitor proteins (KSPIs). A total of eight copies of KSPIs were predicted and grouped into four distinctive types, including short KSPI, long KSPI, Kunitz-Waprin (Ku-WAP) proteins, and a multi-domain Kunitz-type protein. From these, one short KSPI showed high identity with Micrurus tener and Austrelaps superbus. The long KSPI group exhibited similarity within the Micrurus genus and showed homology with various elapid snakes and even with the colubrid Pantherophis guttatus. A third group suggested the presence of Kunitz domains in addition to a whey-acidic-protein-type four-disulfide core domain. Finally, the fourth group corresponded to a transcript copy with a putative 511 amino acid protein, formerly annotated as KSPI, which UniProt classified as SPINT1. In conclusion, this study showed the diversity of Kunitz-type proteins expressed in the venom gland transcriptome of M. mipartitus.
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Affiliation(s)
| | - Claudia Clavero-León
- Centro de Investigación en Recursos Naturales y Sustentabilidad (CIRENYS), Universidad Bernardo O’Higgins, Santiago 8320000, Chile
| | - Paola Rey-Suarez
- Grupo de Investigación en Toxinología, Alternativas Terapéuticas y Alimentarias, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia, Medellín 50010, Colombia; (P.R.-S.); (V.N.-R.)
| | - Vitelbina Nuñez-Rangel
- Grupo de Investigación en Toxinología, Alternativas Terapéuticas y Alimentarias, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia, Medellín 50010, Colombia; (P.R.-S.); (V.N.-R.)
- Escuela de Microbiología, Universidad de Antioquia, Medellín 50010, Colombia
| | - Ruben Avendaño-Herrera
- Facultad de Ciencias de la Vida & Centro de Investigación Marina Quintay (CIMARQ), Universidad Andrés Bello, Viña del Mar 2531015, Chile;
| | - Stefany Solano-González
- Laboratorio de Bioinformática Aplicada, Escuela de Ciencias Biológicas, Universidad Nacional, Heredia 86-3000, Costa Rica
| | - Juan F. Alzate
- Departamento de Microbiología y Parasitología, Facultad de Medicina, Universidad de Antioquia, Medellín 50010, Colombia;
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Tabares Vélez S, Preciado LM, Vargas Muñoz LJ, Madrid Bracamonte CA, Zuluaga A, Gómez Robles J, Renjifo-Ibañez C, Estrada-Gómez S. Standard Quality Characteristics and Efficacy of a New Third-Generation Antivenom Developed in Colombia Covering Micrurus spp. Venoms. Toxins (Basel) 2024; 16:183. [PMID: 38668608 PMCID: PMC11054757 DOI: 10.3390/toxins16040183] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 02/28/2024] [Accepted: 03/05/2024] [Indexed: 04/29/2024] Open
Abstract
In Colombia, Micrurus snakebites are classified as severe according to the national clinical care guidelines and must be treated with specific antivenoms. Unfortunately, these types of antivenoms are scarce in certain areas of the country and are currently reported as an unavailable vital medicine. To address this issue, La Universidad de Antioquia, through its spin-off Tech Life Saving, is leading a project to develop third-generation polyvalent freeze-dried antivenom. The goal is to ensure access to this therapy, especially in rural and dispersed areas. This project aims to evaluate the physicochemical and preclinical parameters (standard quality characteristics) of a lab-scale anti-elapid antivenom batch. The antivenom is challenged against the venoms of several Micrurus species, including M. mipartitus, M. dumerilii, M. ancoralis, M. dissoleucus, M. lemniscatus, M. medemi, M. spixii, M. surinamensis, and M. isozonus, following the standard quality characteristics set by the World Health Organization (WHO). The antivenom demonstrates an appearance consistent with standards, 100% solubility within 4 min and 25 s, an extractable volume of 10.39 mL, a pH of 6.04, an albumin concentration of 0.377 mg/mL (equivalent to 1.22% of total protein), and a protein concentration of 30.97 mg/mL. Importantly, it maintains full integrity of its F(ab')2 fragments and exhibits purity over 98.5%. Furthermore, in mice toxicity evaluations, doses up to 15 mg/mouse show no toxic effects. The antivenom also demonstrates a significant recognition pattern against Micrurus venoms rich in phospholipase A2 (PLA2) content, as observed in M. dumerilii, M. dissoleucus, and M. isozonus. The effective dose 50 (ED50) indicates that a single vial (10 mL) can neutralize 2.33 mg of M. mipartitus venom and 3.99 mg of M. dumerilii venom. This new anti-elapid third-generation polyvalent and freeze-dried antivenom meets the physicochemical parameters set by the WHO and the regulators in Colombia. It demonstrates significant efficacy in neutralizing the venom of the most epidemiologically important Micrurus species in Colombia. Additionally, it recognizes seven other species of Micrurus venom with a higher affinity for venoms exhibiting PLA2 toxins. Fulfilling these parameters represents the first step toward proposing a new pharmacological alternative for treating snakebites in Colombia, particularly in dispersed rural areas, given that this antivenom is formulated as a freeze-dried product.
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Affiliation(s)
- Santiago Tabares Vélez
- Grupo de Toxinología y Alternativas Terapéuticas—Serpentario, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia (UdeA), Medellin 050010, Colombia; (S.T.V.); (L.M.P.); (J.G.R.)
- Tech Life Saving (TLS), Tech Innovation Group Company, Medellin 050022, Colombia; (L.J.V.M.); (C.A.M.B.); (A.Z.)
| | - Lina María Preciado
- Grupo de Toxinología y Alternativas Terapéuticas—Serpentario, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia (UdeA), Medellin 050010, Colombia; (S.T.V.); (L.M.P.); (J.G.R.)
| | - Leidy Johana Vargas Muñoz
- Tech Life Saving (TLS), Tech Innovation Group Company, Medellin 050022, Colombia; (L.J.V.M.); (C.A.M.B.); (A.Z.)
- Facultad de Medicina, Universidad Cooperativa de Colombia, Medellin 050012, Colombia
| | | | - Angelica Zuluaga
- Tech Life Saving (TLS), Tech Innovation Group Company, Medellin 050022, Colombia; (L.J.V.M.); (C.A.M.B.); (A.Z.)
| | - Jeisson Gómez Robles
- Grupo de Toxinología y Alternativas Terapéuticas—Serpentario, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia (UdeA), Medellin 050010, Colombia; (S.T.V.); (L.M.P.); (J.G.R.)
| | - Camila Renjifo-Ibañez
- Centro de Investigación Tibaitatá, Corporación Colombiana de Investigación Agropecuaria—AGROSAVIA, Bogota 250047, Colombia;
| | - Sebastián Estrada-Gómez
- Grupo de Toxinología y Alternativas Terapéuticas—Serpentario, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia (UdeA), Medellin 050010, Colombia; (S.T.V.); (L.M.P.); (J.G.R.)
- Tech Life Saving (TLS), Tech Innovation Group Company, Medellin 050022, Colombia; (L.J.V.M.); (C.A.M.B.); (A.Z.)
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Roman-Ramos H, Prieto-da-Silva ÁRB, Dellê H, Floriano RS, Dias L, Hyslop S, Schezaro-Ramos R, Servent D, Mourier G, de Oliveira JL, Lemes DE, Costa-Lotufo LV, Oliveira JS, Menezes MC, Markus RP, Ho PL. The Cloning and Characterization of a Three-Finger Toxin Homolog (NXH8) from the Coralsnake Micrurus corallinus That Interacts with Skeletal Muscle Nicotinic Acetylcholine Receptors. Toxins (Basel) 2024; 16:164. [PMID: 38668589 PMCID: PMC11054780 DOI: 10.3390/toxins16040164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2024] [Revised: 03/04/2024] [Accepted: 03/20/2024] [Indexed: 04/29/2024] Open
Abstract
Coralsnakes (Micrurus spp.) are the only elapids found throughout the Americas. They are recognized for their highly neurotoxic venom, which is comprised of a wide variety of toxins, including the stable, low-mass toxins known as three-finger toxins (3FTx). Due to difficulties in venom extraction and availability, research on coralsnake venoms is still very limited when compared to that of other Elapidae snakes like cobras, kraits, and mambas. In this study, two previously described 3FTx from the venom of M. corallinus, NXH1 (3SOC1_MICCO), and NXH8 (3NO48_MICCO) were characterized. Using in silico, in vitro, and ex vivo experiments, the biological activities of these toxins were predicted and evaluated. The results showed that only NXH8 was capable of binding to skeletal muscle cells and modulating the activity of nAChRs in nerve-diaphragm preparations. These effects were antagonized by anti-rNXH8 or antielapidic sera. Sequence analysis revealed that the NXH1 toxin possesses eight cysteine residues and four disulfide bonds, while the NXH8 toxin has a primary structure similar to that of non-conventional 3FTx, with an additional disulfide bond on the first loop. These findings add more information related to the structural diversity present within the 3FTx class, while expanding our understanding of the mechanisms of the toxicity of this coralsnake venom and opening new perspectives for developing more effective therapeutic interventions.
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Affiliation(s)
- Henrique Roman-Ramos
- Laboratório de Biotecnologia, Programa de Pós-Graduação em Medicina, Universidade Nove de Julho (UNINOVE), São Paulo 01504-001, SP, Brazil; (H.D.); (J.L.d.O.); (D.E.L.)
| | | | - Humberto Dellê
- Laboratório de Biotecnologia, Programa de Pós-Graduação em Medicina, Universidade Nove de Julho (UNINOVE), São Paulo 01504-001, SP, Brazil; (H.D.); (J.L.d.O.); (D.E.L.)
| | - Rafael S. Floriano
- Laboratório de Toxinologia e Estudos Cardiovasculares, Universidade do Oeste Paulista (UNOESTE), Presidente Prudente 19067-175, SP, Brazil;
| | - Lourdes Dias
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas 13083-887, SP, Brazil; (L.D.); (S.H.); (R.S.-R.)
| | - Stephen Hyslop
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas 13083-887, SP, Brazil; (L.D.); (S.H.); (R.S.-R.)
| | - Raphael Schezaro-Ramos
- Departamento de Farmacologia, Faculdade de Ciências Médicas, Universidade Estadual de Campinas (UNICAMP), Campinas 13083-887, SP, Brazil; (L.D.); (S.H.); (R.S.-R.)
| | - Denis Servent
- Service d’Ingénierie Moléculaire pour la Santé (SIMoS), Département Médicaments et Technologies pour la Santé, Université Paris Saclay, Commissariat à l’énergie Atomique et aux Énergies Alternatives (CEA), F-91191 Gif sur Yvette, France; (D.S.); (G.M.)
| | - Gilles Mourier
- Service d’Ingénierie Moléculaire pour la Santé (SIMoS), Département Médicaments et Technologies pour la Santé, Université Paris Saclay, Commissariat à l’énergie Atomique et aux Énergies Alternatives (CEA), F-91191 Gif sur Yvette, France; (D.S.); (G.M.)
| | - Jéssica Lopes de Oliveira
- Laboratório de Biotecnologia, Programa de Pós-Graduação em Medicina, Universidade Nove de Julho (UNINOVE), São Paulo 01504-001, SP, Brazil; (H.D.); (J.L.d.O.); (D.E.L.)
| | - Douglas Edgard Lemes
- Laboratório de Biotecnologia, Programa de Pós-Graduação em Medicina, Universidade Nove de Julho (UNINOVE), São Paulo 01504-001, SP, Brazil; (H.D.); (J.L.d.O.); (D.E.L.)
| | - Letícia V. Costa-Lotufo
- Departamento de Farmacologia, Instituto de Ciências Biomédicas, Universidade de São Paulo (USP), São Paulo 05508-000, SP, Brazil;
| | - Jane S. Oliveira
- Centro de Biotecnologia, Instituto Butantan, São Paulo 05503-900, SP, Brazil;
| | | | - Regina P. Markus
- Laboratório de Cronofarmacologia, Instituto de Biociências, Universidade de São Paulo (USP), São Paulo 05508-090, SP, Brazil;
| | - Paulo Lee Ho
- Centro Bioindustrial, Instituto Butantan, São Paulo 05503-900, SP, Brazil;
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Piedrahita JD, Cardona-Ruda A, Pereañez JA, Rey-Suárez P. In-depth immunorecognition and neutralization analyses of Micrurus mipartitus and M. dumerilii venoms and toxins by a commercial antivenom. Biochimie 2024; 216:120-125. [PMID: 37844754 DOI: 10.1016/j.biochi.2023.10.009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2023] [Revised: 09/13/2023] [Accepted: 10/09/2023] [Indexed: 10/18/2023]
Abstract
In Colombia, the Micrurus genus comprises 30 species, including M. mipartitus and M. dumerilii, which are of major clinical relevance due to their wide geographical distribution and the number of snakebites inflicted by them. These neurotoxic envenomations are characterized by neuromuscular paralysis attributed to venom components such as three-finger toxins (3FTx) and phospholipases (PLA2). Additionally, there is limited information available on the neutralizing coverage of commercially available antivenoms, underscoring the need to perform studies to assess the cross-neutralizing ability of these life-saving products. Therefore, we present an in-depth immunorecognition analysis by the anticoral-INS antivenom from Colombia on the M. mipartitus and M. dumerilii venoms. The antivenom cross-recognized the whole venoms and their components with different intensities. For instance, the antivenom showed better recognition on PLA2s than on 3FTxs in both venoms. Moreover, at doses tested, the antivenom totally neutralized the lethal effect of M. dumerilii venom; however, it did not neutralize this effect induced by M. mipartitus venom and its main toxic components from the southwestern region of the department of Antioquia. Furthermore, the anticoral-INS antivenom displayed better cross-immunorecognition of PLA2-predominant Micrurus venoms than of 3FTx-predominant Micrurus venoms. This highlights the need to include venoms from both types of venom patterns in the immunization mixture to produce antivenoms against coral snakes. Finally, our results suggest the need for further research to optimize the composition of immunizing mixtures for antivenom production and improve their efficacy against coral snake envenomation in Colombia and the Americas.
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Affiliation(s)
- Juan Diego Piedrahita
- Departamento de Toxicología, Facultad de Medicina, Universidad de Antioquia, Medellín, Colombia
| | - Ana Cardona-Ruda
- Grupo de Investigación en Toxinología, Alternativas Terapéuticas y Alimentarias, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia, Medellín, Colombia
| | - Jaime Andrés Pereañez
- Grupo de Investigación en Toxinología, Alternativas Terapéuticas y Alimentarias, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia, Medellín, Colombia
| | - Paola Rey-Suárez
- Grupo de Investigación en Toxinología, Alternativas Terapéuticas y Alimentarias, Facultad de Ciencias Farmacéuticas y Alimentarias, Universidad de Antioquia, Medellín, Colombia; Centro de Investigación en Recursos Naturales y Sustentabilidad, Universidad Bernardo O'Higgins, Santiago, Chile.
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7
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Pereañez JA, Preciado LM, Rey-Suárez P. Knowledge about Snake Venoms and Toxins from Colombia: A Systematic Review. Toxins (Basel) 2023; 15:658. [PMID: 37999521 PMCID: PMC10675826 DOI: 10.3390/toxins15110658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/08/2023] [Accepted: 11/10/2023] [Indexed: 11/25/2023] Open
Abstract
Colombia encompasses three mountain ranges that divide the country into five natural regions: Andes, Pacific, Caribbean, Amazon, and Orinoquia. These regions offer an impressive range of climates, altitudes, and landscapes, which lead to a high snake biodiversity. Of the almost 300 snake species reported in Colombia, nearly 50 are categorized as venomous. This high diversity of species contrasts with the small number of studies to characterize their venom compositions and natural history in the different ecoregions. This work reviews the available information about the venom composition, isolated toxins, and potential applications of snake species found in Colombia. Data compilation was conducted according to the PRISMA guidelines, and the systematic literature search was carried out in Pubmed/MEDLINE. Venom proteomes from nine Viperidae and three Elapidae species have been described using quantitative analytical strategies. In addition, venoms of three Colubridae species have been studied. Bioactivities reported for some of the venoms or isolated components-such as antibacterial, cytotoxicity on tumoral cell lines, and antiplasmodial properties-may be of interest to develop potential applications. Overall, this review indicates that, despite recent progress in the characterization of venoms from several Colombian snakes, it is necessary to perform further studies on the many species whose venoms remain essentially unexplored, especially those of the poorly known genus Micrurus.
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Affiliation(s)
- Jaime Andrés Pereañez
- Research Group in Toxinology, Pharmaceutical, and Food Alternatives, Pharmaceutical and Food Sciences Faculty, University of Antioquia, Medellín 50010, Colombia; (L.M.P.); (P.R.-S.)
- Research Group in Pharmaceutical Promotion and Prevention, University of Antioquia, Medellín 50010, Colombia
| | - Lina María Preciado
- Research Group in Toxinology, Pharmaceutical, and Food Alternatives, Pharmaceutical and Food Sciences Faculty, University of Antioquia, Medellín 50010, Colombia; (L.M.P.); (P.R.-S.)
| | - Paola Rey-Suárez
- Research Group in Toxinology, Pharmaceutical, and Food Alternatives, Pharmaceutical and Food Sciences Faculty, University of Antioquia, Medellín 50010, Colombia; (L.M.P.); (P.R.-S.)
- Centro de Investigación en Recursos Naturales y Sustentabilidad, Universidad Bernardo O’Higgins, Santiago 8320000, Chile
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8
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Rodríguez-Vargas A, Franco-Vásquez AM, Bolívar-Barbosa JA, Vega N, Reyes-Montaño E, Arreguín-Espinosa R, Carbajal-Saucedo A, Angarita-Sierra T, Ruiz-Gómez F. Unveiling the Venom Composition of the Colombian Coral Snakes Micrurus helleri, M. medemi, and M. sangilensis. Toxins (Basel) 2023; 15:622. [PMID: 37999485 PMCID: PMC10674450 DOI: 10.3390/toxins15110622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/10/2023] [Accepted: 08/16/2023] [Indexed: 11/25/2023] Open
Abstract
Little is known of the biochemical composition and functional features of the venoms of poorly known Colombian coral snakes. Here, we provide a preliminary characterization of the venom of two Colombian endemic coral snake species, Micrurus medemi and M. sangilensis, as well as Colombian populations of M. helleri. Electrophoresis and RP-HPLC techniques were used to identify venom components, and assays were conducted to detect enzyme activities, including phospholipase A2, hyaluronidase, and protease activities. The median lethal dose was determined using murine models. Cytotoxic activities in primary cultures from hippocampal neurons and cancer cell lines were evaluated. The venom profiles revealed similarities in electrophoretic separation among proteins under 20 kDa. The differences in chromatographic profiles were significant, mainly between the fractions containing medium-/large-sized and hydrophobic proteins; this was corroborated by a proteomic analysis which showed the expected composition of neurotoxins from the PLA2 (~38%) and 3FTx (~17%) families; however, a considerable quantity of metalloproteinases (~12%) was detected. PLA2 activity and protease activity were higher in M. helleri venom according to qualitative and quantitative assays. M. medemi venom had the highest lethality. All venoms decreased cell viability when tested on tumoral cell cultures, and M. helleri venom had the highest activity in neuronal primary culture. These preliminary studies shed light on the venoms of understudied coral snakes and broaden the range of sources that could be used for subsequent investigations of components with applications to specific diseases. Our findings also have implications for the clinical manifestations of snake envenoming and improvements in its medical management.
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Affiliation(s)
- Ariadna Rodríguez-Vargas
- Grupo de Investigación en Proteínas, Departamento de Química, Faculty of Sciences, Universidad Nacional de Colombia, Bogotá 11001, Colombia (N.V.); (E.R.-M.)
- Grupo de Investigación en Animales Ponzoñosos y sus Venenos, Dirección de Producción, Instituto Nacional de Salud, Bogotá 111321, Colombia; (T.A.-S.); (F.R.-G.)
| | - Adrián Marcelo Franco-Vásquez
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México 04510, Mexico (R.A.-E.)
| | - Janeth Alejandra Bolívar-Barbosa
- Grupo de Investigación en Proteínas, Departamento de Química, Faculty of Sciences, Universidad Nacional de Colombia, Bogotá 11001, Colombia (N.V.); (E.R.-M.)
| | - Nohora Vega
- Grupo de Investigación en Proteínas, Departamento de Química, Faculty of Sciences, Universidad Nacional de Colombia, Bogotá 11001, Colombia (N.V.); (E.R.-M.)
| | - Edgar Reyes-Montaño
- Grupo de Investigación en Proteínas, Departamento de Química, Faculty of Sciences, Universidad Nacional de Colombia, Bogotá 11001, Colombia (N.V.); (E.R.-M.)
| | - Roberto Arreguín-Espinosa
- Departamento de Química de Biomacromoléculas, Instituto de Química, Universidad Nacional Autónoma de México, Coyoacán, Ciudad de México 04510, Mexico (R.A.-E.)
| | - Alejandro Carbajal-Saucedo
- Laboratorio de Herpetología, Facultad de Ciencias Biológicas, Universidad Autónoma de Nuevo León, San Nicolás de los Garza 66450, Mexico;
| | - Teddy Angarita-Sierra
- Grupo de Investigación en Animales Ponzoñosos y sus Venenos, Dirección de Producción, Instituto Nacional de Salud, Bogotá 111321, Colombia; (T.A.-S.); (F.R.-G.)
- Grupo de investigación Biodiversidad para la Sociedad, Escuela de pregrados, Dirección Académica, Universidad Nacional de Colombia sede de La Paz, Cesar 22010, Colombia
| | - Francisco Ruiz-Gómez
- Grupo de Investigación en Animales Ponzoñosos y sus Venenos, Dirección de Producción, Instituto Nacional de Salud, Bogotá 111321, Colombia; (T.A.-S.); (F.R.-G.)
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9
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Baudou FG, Gutiérrez JM, Rodríguez JP. Immune response to neurotoxic South American snake venoms. Toxicon 2023; 234:107300. [PMID: 37757959 DOI: 10.1016/j.toxicon.2023.107300] [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: 08/01/2023] [Revised: 09/14/2023] [Accepted: 09/20/2023] [Indexed: 09/29/2023]
Abstract
South American rattlesnakes (Crotalus durissus spp) and coral snakes (Micrurus sp) venoms are characterized by inducing a limited inflammatory innate immune response, in contrast to Bothrops sp snake venoms which exert a prominent inflammatory activity. Some Crotalus durissus spp venoms, in addition, exert immunosuppressive activities that hamper the development of neutralizing antibodies in animals immunized for antivenom production. Micrurus sp venoms are rich in low molecular mass neurotoxins that elicit a limited immune response. These characteristics make it difficult to generate antivenoms of high neutralizing activity. Therefore, the study of the mechanisms operating behind this limited immune response to venoms is relevant from both fundamental and practical perspectives. This review summarizes key aspects of the immune response to these venoms and discusses some pending challenges to further understand these phenomena and to improve antivenom production.
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Affiliation(s)
- Federico G Baudou
- Universidad Nacional de Luján (UNLu), Depto. de Ciencias Básicas, Luján, Buenos Aires, Argentina; Grupo de Investigaciones Básicas y Aplicadas en Inmunología y Bioactivos (GIBAIB), Instituto de Ecología y Desarrollo Sustentable (INEDES), UNLu-CONICET, Luján, Buenos Aires, Argentina.
| | - José María Gutiérrez
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Juan Pablo Rodríguez
- Laboratorio de Investigaciones Bioquímicas de la Facultad de Medicina (LIBIM), Instituto de Química Básica y Aplicada del Nordeste Argentino (IQUIBA-NEA), Universidad Nacional del Nordeste, Consejo Nacional de Investigaciones Científicas y Técnicas (UNNE-CONICET), Corrientes, Argentina
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10
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Oliveira LD, Nachtigall PG, Vialla VL, Campos PF, Costa-Neves AD, Zaher H, Silva NJD, Grazziotin FG, Wilkinson M, Junqueira-de-Azevedo ILM. Comparing morphological and secretory aspects of cephalic glands among the New World coral snakes brings novel insights on their biological roles. Toxicon 2023; 234:107285. [PMID: 37683698 DOI: 10.1016/j.toxicon.2023.107285] [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: 06/06/2023] [Revised: 09/05/2023] [Accepted: 09/06/2023] [Indexed: 09/10/2023]
Abstract
Oral and other cephalic glands have been surveyed by several studies with distinct purposes. Despite the wide diversity and medical relevance of the New World coral snakes, studies focusing on understanding the biological roles of the glands within this group are still scarce. Specifically, the venom glands of some coral snakes were previously investigated but all other cephalic glands remain uncharacterized. In this sense, performing morphological and molecular analysis of these glands may help better understand their biological role. Here, we studied the morphology of the venom, infralabial, rictal, and harderian glands of thirteen species of Micrurus and Micruroides euryxanthus. We also performed a molecular characterization of these glands from selected species of Micrurus using transcriptomic and proteomic approaches. We described substantial morphological variation in the cephalic glands of New World coral snakes and structural evidence for protein-secreting cells in the inferior rictal glands. Our molecular analysis revealed that the venom glands, as expected, are majorly devoted to toxin production, however, the infralabial and inferior rictal glands also expressed some toxin genes at low to medium levels, despite the marked morphological differences. On the other hand, the harderian glands were dominated by the expression of lipocalins, but do not produce toxins. Our integrative analysis, including the prediction of biological processes and pathways, helped decipher some important traits of cephalic glands and better understand their biology.
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Affiliation(s)
- Leonardo de Oliveira
- Laboratório de Toxinologia Aplicada, Centre of Toxins, Immune-Response and Cell Signaling (CeTICS), Instituto Butantan, São Paulo, 05503-900, Brazil; Herpetology, The Natural History Museum, London, SW7 5BD, United Kingdom.
| | - Pedro Gabriel Nachtigall
- Laboratório de Toxinologia Aplicada, Centre of Toxins, Immune-Response and Cell Signaling (CeTICS), Instituto Butantan, São Paulo, 05503-900, Brazil
| | - Vincent Louis Vialla
- Laboratório de Toxinologia Aplicada, Centre of Toxins, Immune-Response and Cell Signaling (CeTICS), Instituto Butantan, São Paulo, 05503-900, Brazil
| | - Pollyanna F Campos
- Laboratório de Toxinologia Aplicada, Centre of Toxins, Immune-Response and Cell Signaling (CeTICS), Instituto Butantan, São Paulo, 05503-900, Brazil
| | | | - Hussam Zaher
- Museu de Zoologia da Universidade de São Paulo, Avenida Nazaré 481, Ipiranga, 04263-000, São Paulo, Brazil
| | - Nelson Jorge da Silva
- Programa de Pós-Graduação em Ciências Ambientais e Saúde, Pontifícia Universidade Católica de Goiás, Goiânia, Goiás, 74605-140, Brazil
| | - Felipe G Grazziotin
- Laboratório de Coleções Zoológicas, Instituto Butantan, São Paulo, 05503-900, Brazil
| | - Mark Wilkinson
- Herpetology, The Natural History Museum, London, SW7 5BD, United Kingdom
| | - Inácio L M Junqueira-de-Azevedo
- Laboratório de Toxinologia Aplicada, Centre of Toxins, Immune-Response and Cell Signaling (CeTICS), Instituto Butantan, São Paulo, 05503-900, Brazil
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11
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Couceiro FYGM, Demico PJ, Dias SR, Oliveira IN, Pacagnelli FL, Silva EO, Sant'Anna SS, Grego KF, Morais-Zani K, Torres-Bonilla KA, Hyslop S, Floriano RS. Involvement of phospholipase A 2 in the neuromuscular blockade caused by coralsnake (Micrurus spp.) venoms in mouse phrenic nerve-diaphragm preparations in vitro. Toxicon 2023; 234:107263. [PMID: 37659667 DOI: 10.1016/j.toxicon.2023.107263] [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: 05/25/2023] [Revised: 08/13/2023] [Accepted: 08/22/2023] [Indexed: 09/04/2023]
Abstract
In this work, we examined the neuromuscular blockade caused by venoms from four South-American coralsnakes (Micrurus altirostris - MA, M. corallinus - MC, M. spixii - MS, and M. dumerilii carinicauda - MDC) and the ability of varespladib (VPL), a phospholipase A2 (PLA2) inhibitor, to attenuate this blockade. PLA2 activity was determined using a colorimetric assay and a fixed amount of venom (10 μg). Neurotoxicity was assayed using a single concentration of venom (10 μg/ml) in mouse phrenic nerve-diaphragm (PND) preparations mounted for myographic recordings and then subjected to histological analysis. All venoms showed PLA2 activity, with MS and MA venoms having the highest (15.53 ± 1.9 A425 nm/min) and lowest (0.23 ± 0.14 A425 nm/min) activities, respectively. VPL (292 and 438 μM) inhibited the PLA2 activity of all venoms, although that of MA venom was least affected. All venoms caused neuromuscular blockade, with MS and MDC venoms causing the fastest and slowest 100% blockade [in 40 ± 3 min and 120 ± 6 min (n = 4), respectively]; MA and MC produced complete blockade within 90-100 min. Preincubation of venoms with 292 μM VPL attenuated the blockade to varying degrees: the greatest inhibition was seen with MDC venom and blockade by MS venom was unaffected by this inhibitor. These results indicate that PLA2 has a variable contribution to coralsnake venom-induced neuromuscular blockade in vitro, with the insensitivity of MS venom to VPL suggesting that blockade by this venom is mediated predominantly by post-synaptically-active α-neurotoxins.
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Affiliation(s)
- Fernanda Y G M Couceiro
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Presidente Prudente, SP, Brazil
| | - Poliana J Demico
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Presidente Prudente, SP, Brazil
| | - Samuel R Dias
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Presidente Prudente, SP, Brazil
| | - Isabele N Oliveira
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Presidente Prudente, SP, Brazil
| | - Francis L Pacagnelli
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Presidente Prudente, SP, Brazil
| | - Elisangela O Silva
- Laboratory of Pathological Anatomy, Veterinary Hospital, University of Western São Paulo (UNOESTE), Presidente Prudente, SP, Brazil
| | - Sávio S Sant'Anna
- Laboratory of Herpetology, Butantan Institute (IB), São Paulo, SP, Brazil
| | - Kathleen F Grego
- Laboratory of Herpetology, Butantan Institute (IB), São Paulo, SP, Brazil
| | - Karen Morais-Zani
- Laboratory of Herpetology, Butantan Institute (IB), São Paulo, SP, Brazil
| | - Kristian A Torres-Bonilla
- Section of Pharmacology, Department of Translational Medicine, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Stephen Hyslop
- Section of Pharmacology, Department of Translational Medicine, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Campinas, SP, Brazil
| | - Rafael S Floriano
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo (UNOESTE), Presidente Prudente, SP, Brazil.
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12
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Jowers MJ, Smart U, Sánchez-Ramírez S, Murphy JC, Gómez A, Bosque RJ, Sarker GC, Noonan BP, Faria JF, Harris DJ, da Silva NJ, Prudente ALC, Weber J, Kok PJR, Rivas GA, Jadin RC, Sasa M, Muñoz-Mérida A, Moreno-Rueda G, Smith EN. Unveiling underestimated species diversity within the Central American Coralsnake, a medically important complex of venomous taxa. Sci Rep 2023; 13:11674. [PMID: 37468518 DOI: 10.1038/s41598-023-37734-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 06/27/2023] [Indexed: 07/21/2023] Open
Abstract
Coralsnakes of the genus Micrurus are a diverse group of venomous snakes ranging from the southern United States to southern South America. Much uncertainty remains over the genus diversity, and understanding Micrurus systematics is of medical importance. In particular, the widespread Micrurus nigrocinctus spans from Mexico throughout Central America and into Colombia, with a number of described subspecies. This study provides new insights into the phylogenetic relationships within M. nigrocinctus by examining sequence data from a broad sampling of specimens from Mexico, Guatemala, Honduras, Nicaragua, Costa Rica, and Panama. The recovered phylogenetic relationships suggest that M. nigrocinctus is a species complex originating in the Pliocene and composed of at least three distinct species-level lineages. In addition, recovery of highly divergent clades supports the elevation of some currently recognized subspecies to the full species rank while others may require synonymization.
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Affiliation(s)
- Michael J Jowers
- CIBIO/InBIO (Centro de Investigação em Biodiversidade e Recursos Genéticos), Universidade do Porto, Campus Agrario De Vairão, 4485-661, Vairão, Portugal.
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal.
- Departamento de Zoología, Facultad de Ciencias, Universidad de Granada, 18071, Granada, Spain.
| | - Utpal Smart
- Department of Biology, Texas State University, 601 University Dr., San Marcos, TX, 78666, USA
| | - Santiago Sánchez-Ramírez
- Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks, Toronto, ON, M5S 3B2, Canada
| | - John C Murphy
- Science and Education, Field Museum, 1400 S. Lake Shore Drive, Chicago, IL, 60605, USA
| | - Aarón Gómez
- Facultad de Microbiología, Instituto Clodomiro Picado, Universidad de Costa Rica, San José, Costa Rica
| | - Renan J Bosque
- Department of Biological Sciences, Southwestern Oklahoma State University, Weatherford, OK, 73096, USA
| | - Goutam C Sarker
- Department of Biology and Amphibian and Reptile Diversity Research Center, University of Texas at Arlington, Arlington, TX, 76019, USA
- Department of Biology, Cottey College, 1000 W. Austin Blvd, Nevada, MO, 64772, USA
| | - Brice P Noonan
- Department of Biology, The University of Mississippi, Oxford, MS, 38677, USA
| | - J Filipe Faria
- CIBIO/InBIO (Centro de Investigação em Biodiversidade e Recursos Genéticos), Universidade do Porto, Campus Agrario De Vairão, 4485-661, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
- Departamento de Biologia, Faculdade de Ciências da Universidade do Porto, 4099-002, Porto, Portugal
| | - D James Harris
- CIBIO/InBIO (Centro de Investigação em Biodiversidade e Recursos Genéticos), Universidade do Porto, Campus Agrario De Vairão, 4485-661, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
| | - Nelson Jorge da Silva
- Pontifícia Universidade Católica de Goiás - Programa de Pós-Graduação em Ciências Ambientais e Saúde, Goiânia, Goiás, 74605140, Brazil
| | - Ana L C Prudente
- Laboratório de Herpetologia, Coordenação de Zoologia, Museu Paraense Emílio Goeldi (MPEG), Belém, Pará, Brazil
- Programa de Pós-Graduação em Zoologia (UFPA/MPEG) and Biodiversidade e Evolução (MPEG), Belém, Pará, Brazil
| | - John Weber
- Department of Geology, Grand Valley State University, Allendale, MI, 49401, USA
| | - Philippe J R Kok
- Department of Ecology and Vertebrate Zoology, Faculty of Biology and Environmental Protection, University of Łódź, 12/16 Banacha Str, 90-237, Lodz, Poland
- Department of Life Sciences, The Natural History Museum, London, SW7 5BD, UK
| | - Gilson A Rivas
- Museo de Biología, Facultad Experimental de Ciencias, Universidad del Zulia, Maracaibo, Venezuela
| | - Robert C Jadin
- Department of Biology and Museum of Natural History, University of Wisconsin Stevens Point, Stevens Point, WI, 54481, USA
| | - Mahmood Sasa
- Facultad de Microbiología, Instituto Clodomiro Picado, Universidad de Costa Rica, San José, Costa Rica
- Museo de Zoología, Centro de Investigación en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, San José, Costa Rica
| | - Antonio Muñoz-Mérida
- CIBIO/InBIO (Centro de Investigação em Biodiversidade e Recursos Genéticos), Universidade do Porto, Campus Agrario De Vairão, 4485-661, Vairão, Portugal
- BIOPOLIS Program in Genomics, Biodiversity and Land Planning, CIBIO, Campus de Vairão, 4485-661, Vairão, Portugal
| | - Gregorio Moreno-Rueda
- Departamento de Zoología, Facultad de Ciencias, Universidad de Granada, 18071, Granada, Spain
| | - Eric N Smith
- Department of Biology and Amphibian and Reptile Diversity Research Center, University of Texas at Arlington, Arlington, TX, 76019, USA
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13
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Zhao HY, He N, Sun Y, Wang YC, Zhang HB, Chen HH, Zhang YQ, Gao JF. Phylogeny-Related Variations in Venomics: A Test in a Subset of Habu Snakes ( Protobothrops). Toxins (Basel) 2023; 15:toxins15050350. [PMID: 37235384 DOI: 10.3390/toxins15050350] [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: 04/18/2023] [Revised: 05/11/2023] [Accepted: 05/15/2023] [Indexed: 05/28/2023] Open
Abstract
We conducted a comparative analysis to unveil the divergence among venoms from a subset of Old World habu snakes (Protobothrops) in terms of venomic profiles and toxicological and enzymatic activities. A total of 14 protein families were identified in the venoms from these habu snakes, and 11 of them were shared among these venoms. The venoms of five adult habu snakes were overwhelmingly dominated by SVMP (32.56 ± 13.94%), PLA2 (22.93 ± 9.26%), and SVSP (16.27 ± 4.79%), with a total abundance of over 65%, while the subadult P. mangshanensis had an extremely low abundance of PLA2 (1.23%) but a high abundance of CTL (51.47%), followed by SVMP (22.06%) and SVSP (10.90%). Apparent interspecific variations in lethality and enzymatic activities were also explored in habu snake venoms, but no variations in myotoxicity were found. Except for SVSP, the resemblance of the relatives within Protobothrops in other venom traits was estimated to deviate from Brownian motion evolution based on phylogenetic signals. A comparative analysis further validated that the degree of covariation between phylogeny and venom variation is evolutionarily labile and varies among clades of closely related snakes. Our findings indicate a high level of interspecific variation in the venom proteomes of habu snakes, both in the presence or absence and the relative abundance of venom protein families, and that these venoms might have evolved under a combination of adaptive and neutral mechanisms.
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Affiliation(s)
- Hong-Yan Zhao
- Herpetological Research Center, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Na He
- Herpetological Research Center, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Yan Sun
- Herpetological Research Center, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Yong-Chen Wang
- Herpetological Research Center, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Hao-Bing Zhang
- Herpetological Research Center, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Hui-Hui Chen
- Herpetological Research Center, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Ya-Qi Zhang
- Herpetological Research Center, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
| | - Jian-Fang Gao
- Herpetological Research Center, College of Life and Environmental Sciences, Hangzhou Normal University, Hangzhou 311121, China
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14
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Oliveira DD, Guerra-Duarte C, Stransky S, Scussel R, Pereira de Castro KL, Costal-Oliveira F, Aragão M, Oliveira-Souza GD, Saavedra-Langer R, Trevisan G, Bonilla-Ferreyra C, Chávez-Olórtegui C, Machado-de-Ávila RA. Toxic and antigenic characterization of Peruvian Micrurus surinamensis coral snake venom. Toxicon 2023; 225:107056. [PMID: 36804442 DOI: 10.1016/j.toxicon.2023.107056] [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: 11/21/2022] [Revised: 02/01/2023] [Accepted: 02/10/2023] [Indexed: 02/18/2023]
Abstract
Micrurus surinamensis is a semi-aquatic coral snake found in primary forest region and can cause relevant human accidents. In this work we investigated the toxic and antigenic activities of the Peruvian Micrurus surinamensis venom (MsV). We found that MsV show hyaluronidase activity but lack LAAO and PLA2 enzymatic activities. Interestingly, MsV induce edematogenic responses but cannot cause nociceptive effects. Furthermore, MsV can reduce in vitro cell viability in MGSO-3 cell line derived from human breast cancer tissue. To evaluate its antigenic potential, rabbits were immunized with MsV, which proved to be immunogenic. ELISA, immunobloting and in vivo neutralization assays demonstrated that the specific rabbit anti-MsV antivenom is more efficient than the therapeutic Brazilian antivenom in recognizing and neutralizing the lethal activity of MsV. MsV differs in protein profile and biological activities from M. frontalis venom (MfV), used as control, which impairs its recognition and neutralization by Brazilian therapeutic anti-elapidic antivenom. We performed a SPOT immunoassay for the identification of B-cell linear epitopes in the main toxins described for MsV targeted by the elicited neutralizing antibodies previously produced. A membrane containing 15-mer peptides representing the sequences of five 3TFxs and five PLA2s was produced and probed with anti- MsV antibodies. Results revealed important regions in 3FTx toxins for venom neutralization. Identifying the main MsV components and its biological activities can be helpful in guiding the production of antivenoms and in the optimization of treatment for coral snake envenomation in Brazil.
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Affiliation(s)
- Daysiane de Oliveira
- Programa de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Criciúma, Brazil
| | - Clara Guerra-Duarte
- Centro de Pesquisa e Desenvolvimento, Fundação Ezequiel Dias, Belo Horizonte, Brazil
| | - Stephanie Stransky
- Department of Biochemistry, Albert Einstein College of Medicine, New York, United States
| | - Rahisa Scussel
- Programa de Pós-Graduação em Ciências da Saúde, Universidade do Extremo Sul Catarinense, Criciúma, Brazil
| | | | - Fernanda Costal-Oliveira
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Matheus Aragão
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Gladstony de Oliveira-Souza
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Rafael Saavedra-Langer
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Gabriela Trevisan
- Programa de Pós-Graduação em Farmacologia, Universidade Federal de Santa Maria, Santa Maria, Brazil
| | | | - Carlos Chávez-Olórtegui
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil.
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15
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Antibodies against a single fraction of Micrurus dumerilii venom neutralize the lethal effect of whole venom. Toxicol Lett 2023; 374:77-84. [PMID: 36528173 DOI: 10.1016/j.toxlet.2022.12.005] [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: 10/12/2022] [Revised: 12/09/2022] [Accepted: 12/12/2022] [Indexed: 12/15/2022]
Abstract
The coralsnake Micrurus dumerilii (Elapidae) is reported to cause envenomings of medical importance. Previous studies characterized the protein composition of its venom, with phospholipase A2 (PLA2) proteins the most abundant. However, it is unknown which venom components are responsible for its lethal toxicity. Fractionation of M. dumerilii venom from Colombia was carried out using RP-HPLC and each fraction was screened for lethal effect in mice at a dose of 20 μg by intraperitoneal route. Results showed that only one fraction, F9, was lethal. This fraction displayed PLA2 activity, induced indirect hemolysis in vitro, as well as edema and myotoxicity in vivo. SDS-PAGE of unreduced F9 evidenced two bands of 8 and 15 kDa, respectively, consistent with the detection of proteins with masses of 13,217.77 Da, 7144.06 Da, and 7665.55 Da. Tryptic digestion of F9 followed by nESI-MS/MS revealed peptide sequences matching proteins of the three-finger toxin (3FTx) and PLA2 families. Immunization of a rabbit with F9 proteins elicited antibody titers up to 1:10,000 by ELISA. After serum fractionation with caprylic acid, the obtained IgG was able to neutralize the lethal effect of the complete venom of M. dumerilii using a challenge of 2 ×LD50 at the IgG/venom ratio of 50:1 (w/w). In conclusion, present results show that the lethal effect of M. dumerilii venom in mice is mainly driven by one fraction which contains 3FTx and PLA2 proteins. The antibodies produced against this fraction cross-recognized other PLA2s and neutralized the lethal effect of whole M. dumerilii venom, pointing out to the potential usefulness of F9 as a relevant antigen for improving current coral snake antivenoms.
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16
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Corrêa-Netto C, Strauch MA, Monteiro-Machado M, Teixeira-Araújo R, Fonseca JG, Leitão-Araújo M, Machado-Alves ML, Sanz L, Calvete JJ, Melo PA, Zingali RB. Monoclonal-Based Antivenomics Reveals Conserved Neutralizing Epitopes in Type I PLA 2 Molecules from Coral Snakes. Toxins (Basel) 2022; 15:toxins15010015. [PMID: 36668835 PMCID: PMC9863321 DOI: 10.3390/toxins15010015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2022] [Revised: 12/18/2022] [Accepted: 12/22/2022] [Indexed: 12/28/2022] Open
Abstract
For over a century, polyclonal antibodies have been used to treat snakebite envenoming and are still considered by the WHO as the only scientifically validated treatment for snakebites. Nevertheless, moderate innovations have been introduced to this immunotherapy. New strategies and approaches to understanding how antibodies recognize and neutralize snake toxins represent a challenge for next-generation antivenoms. The neurotoxic activity of Micrurus venom is mainly due to two distinct protein families, three-finger toxins (3FTx) and phospholipases A2 (PLA2). Structural conservation among protein family members may represent an opportunity to generate neutralizing monoclonal antibodies (mAbs) against family-conserved epitopes. In this work, we sought to produce a set of monoclonal antibodies against the most toxic components of M. altirostris venom. To this end, the crude venom was fractionated, and its major toxic proteins were identified and used to generate a panel of five mAbs. The specificity of these mAbs was characterized by ELISA and antivenomics approaches. Two of the generated mAbs recognized PLA2 epitopes. They inhibited PLA2 catalytic activity and showed paraspecific neutralization against the myotoxicity from the lethal effect of Micrurus and Naja venoms' PLA2s. Epitope conservation among venom PLA2 molecules suggests the possibility of generating pan-PLA2 neutralizing antibodies.
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Affiliation(s)
- Carlos Corrêa-Netto
- Instituto Vital Brazil, Rio de Janeiro 24230-410, RJ, Brazil
- Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- Correspondence: (C.C.-N.); (R.B.Z.); Tel.: +55-213-938-6782 (R.B.Z.)
| | - Marcelo A. Strauch
- Instituto Vital Brazil, Rio de Janeiro 24230-410, RJ, Brazil
- Programa de Farmacologia e Química Medicinal-UFRJ, Instituto de Ciências Biomédicas, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Rio de Janeiro 21941-902, RJ, Brazil
| | - Marcos Monteiro-Machado
- Programa de Farmacologia e Química Medicinal-UFRJ, Instituto de Ciências Biomédicas, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Rio de Janeiro 21941-902, RJ, Brazil
| | - Ricardo Teixeira-Araújo
- Instituto Vital Brazil, Rio de Janeiro 24230-410, RJ, Brazil
- Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
| | | | - Moema Leitão-Araújo
- Fundação Zoobotânica do Rio Grande do Sul, Museu de Ciências Naturais, Núcleo Regional de Ofiologia de Porto Alegre, Porto Alegre 90690-000, RS, Brazil
| | - Maria Lúcia Machado-Alves
- Fundação Zoobotânica do Rio Grande do Sul, Museu de Ciências Naturais, Núcleo Regional de Ofiologia de Porto Alegre, Porto Alegre 90690-000, RS, Brazil
| | - Libia Sanz
- Laboratorio de Venómica Estructural y Funcional, Instituto de Biomedicina de Valencia, 46010 Valencia, Spain
| | - Juan J. Calvete
- Laboratorio de Venómica Estructural y Funcional, Instituto de Biomedicina de Valencia, 46010 Valencia, Spain
| | - Paulo A. Melo
- Programa de Farmacologia e Química Medicinal-UFRJ, Instituto de Ciências Biomédicas, Centro de Ciências da Saúde, Universidade Federal do Rio de Janeiro, Av. Carlos Chagas Filho, 373, Rio de Janeiro 21941-902, RJ, Brazil
| | - Russolina Benedeta Zingali
- Instituto de Bioquímica Médica Leopoldo de Meis, Instituto Nacional de Biologia Estrutural e Bioimagem, Universidade Federal do Rio de Janeiro, Rio de Janeiro 21941-902, RJ, Brazil
- Correspondence: (C.C.-N.); (R.B.Z.); Tel.: +55-213-938-6782 (R.B.Z.)
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Hernández-Altamirano JA, Salazar-Valenzuela D, Medina-Villamizar EJ, Quirola DR, Patel K, Vaiyapuri S, Lomonte B, Almeida JR. First Insights into the Venom Composition of Two Ecuadorian Coral Snakes. Int J Mol Sci 2022; 23:ijms232314686. [PMID: 36499012 PMCID: PMC9740791 DOI: 10.3390/ijms232314686] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 11/16/2022] [Accepted: 11/22/2022] [Indexed: 11/27/2022] Open
Abstract
Micrurus is a medically relevant genus of venomous snakes composed of 85 species. Bites caused by coral snakes are rare, but they are usually associated with very severe and life-threatening clinical manifestations. Ecuador is a highly biodiverse country with a complex natural environment, which is home to approximately 20% of identified Micrurus species. Additionally, it is on the list of Latin American countries with the highest number of snakebites. However, there is no local antivenom available against the Ecuadorian snake venoms, and the biochemistry of these venoms has been poorly explored. Only a limited number of samples collected in the country from the Viperidae family were recently characterised. Therefore, this study addressed the compositional patterns of two coral snake venoms from Ecuador, M. helleri and M. mipartitus, using venomics strategies, integrating sample fractionation, gel electrophoresis, and mass spectrometry. Chromatographic and electrophoretic profiles of these snake venoms revealed interspecific variability, which was ascertained by mass spectrometry. The two venoms followed the recently recognised dichotomic toxin expression trends displayed by Micrurus species: M. helleri venom contains a high proportion (72%) of phospholipase A2, whereas M. mipartitus venom is dominated by three-finger toxins (63%). A few additional protein families were also detected in these venoms. Overall, these results provide the first comprehensive views on the composition of two Ecuadorian coral snake venoms and expand the knowledge of Micrurus venom phenotypes. These findings open novel perspectives to further research the functional aspects of these biological cocktails of PLA2s and 3FTxs and stress the need for the preclinical evaluation of the currently used antivenoms for therapeutic purposes in Ecuador.
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Affiliation(s)
| | - David Salazar-Valenzuela
- Centro de Investigación de la Biodiversidad y Cambio Climático (BioCamb) e Ingeniería en Biodiversidad y Recursos Genéticos, Facultad de Ciencias de Medio Ambiente, Universidad Indoamérica, Quito 180103, Ecuador
| | | | - Diego R. Quirola
- Centro de Investigación de la Biodiversidad y Cambio Climático (BioCamb) e Ingeniería en Biodiversidad y Recursos Genéticos, Facultad de Ciencias de Medio Ambiente, Universidad Indoamérica, Quito 180103, Ecuador
| | - Ketan Patel
- School of Biological Sciences, University of Reading, Reading RG6 6UB, UK
| | | | - Bruno Lomonte
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San Jose 11501, Costa Rica
| | - José R. Almeida
- Biomolecules Discovery Group, Universidad Regional Amazónica Ikiam, Km 8 Via Muyuna, Tena 150101, Ecuador
- School of Pharmacy, University of Reading, Reading RG6 6UB, UK
- Correspondence:
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18
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Romero-Giraldo LE, Pulido S, Berrío MA, Flórez MF, Rey-Suárez P, Nuñez V, Pereañez JA. Heterologous Expression and Immunogenic Potential of the Most Abundant Phospholipase A 2 from Coral Snake Micrurus dumerilii to Develop Antivenoms. Toxins (Basel) 2022; 14:toxins14120825. [PMID: 36548722 PMCID: PMC9788014 DOI: 10.3390/toxins14120825] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2022] [Revised: 11/08/2022] [Accepted: 11/17/2022] [Indexed: 11/25/2022] Open
Abstract
Micrurus dumerilii is a coral snake of clinic interest in Colombia. Its venom is mainly composed of phospholipases A2 being MdumPLA2 the most abundant protein. Nevertheless, Micrurus species produce a low quantity of venom, which makes it difficult to produce anticoral antivenoms. Therefore, in this work, we present the recombinant expression of MdumPLA2 to evaluate its biological activities and its immunogenic potential to produce antivenoms. For this, a genetic construct rMdumPLA2 was cloned into the pET28a vector and expressed heterologously in bacteria. His-rMdumPLA2 was extracted from inclusion bodies, refolded in vitro, and isolated using affinity and RP-HPLC chromatography. His-rMdumPLA2 was shown to have phospholipase A2 activity, a weak anticoagulant effect, and induced myonecrosis and edema. The anti-His-rMdumPLA2 antibodies produced in rabbits recognized native PLA2, the complete venom of M. dumerilii, and a phospholipase from another species of the Micrurus genus. Antibodies neutralized 100% of the in vitro phospholipase activity of the recombinant toxin and a moderate percentage of the myotoxic activity of M. dumerilii venom in mice. These results indicate that His-rMdumPLA2 could be used as an immunogen to improve anticoral antivenoms development. This work is the first report of an M. dumerilii functional recombinant PLA2.
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Affiliation(s)
- Luz E. Romero-Giraldo
- Research Group in Toxinology, Pharmaceutical, and Food Alternatives, Pharmaceutical and Food Sciences Faculty, University of Antioquia, Medellín 50010, Colombia
| | - Sergio Pulido
- Tropical Disease Study and Control Program—PECET, University of Antioquia, Medellín 50010, Colombia
- LifeFactors Zona Franca SAS, Rionegro 54047, Colombia
| | - Mario A. Berrío
- Tropical Disease Study and Control Program—PECET, University of Antioquia, Medellín 50010, Colombia
| | - María F. Flórez
- Tropical Disease Study and Control Program—PECET, University of Antioquia, Medellín 50010, Colombia
| | - Paola Rey-Suárez
- Research Group in Toxinology, Pharmaceutical, and Food Alternatives, Pharmaceutical and Food Sciences Faculty, University of Antioquia, Medellín 50010, Colombia
- Centro de Investigación en Recursos Naturales y Sustentabilidad, Universidad Bernardo O’Higgins, Santiago 8320000, Chile
| | - Vitelbina Nuñez
- Research Group in Toxinology, Pharmaceutical, and Food Alternatives, Pharmaceutical and Food Sciences Faculty, University of Antioquia, Medellín 50010, Colombia
- Microbiology School, University of Antioquia, Medellín 50010, Colombia
| | - Jaime A. Pereañez
- Research Group in Toxinology, Pharmaceutical, and Food Alternatives, Pharmaceutical and Food Sciences Faculty, University of Antioquia, Medellín 50010, Colombia
- Correspondence:
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19
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Differences between Two Groups of Burmese Vipers (Viperidae: Azemiops) in the Proteomic Profiles, Immunoreactivity and Biochemical Functions of Their Venoms. Toxins (Basel) 2022; 14:toxins14080572. [PMID: 36006235 PMCID: PMC9416478 DOI: 10.3390/toxins14080572] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2022] [Revised: 08/16/2022] [Accepted: 08/18/2022] [Indexed: 11/20/2022] Open
Abstract
Two recently revised Azemiops snakes with apparent differences in their external appearances and skeletal morphologies but unclear genetic boundaries have been proposed. Some researchers have refrained from using the newly proposed taxonomy because these two “species” might be two clades corresponding to different geographical populations of Azemiops feae. To improve the understanding of the kinship of these two Burmese viper groups, more of their characteristics should be explored in depth. We performed a comparative analysis of the proteomic profiles and biochemical activities of snake venoms from these two groups (Sichuan A. feae and Zhejiang A. feae) and evaluated the immunorecognition capacity of commercial antivenoms toward them. Eight protein families were identified in venoms from these two groups, while phospholipase B was only detected in venom from Sichuan A. feae. These protein families displayed varying degrees of differences in relative abundance between venoms, and phospholipase A2 (Sichuan A. feae: 57.15%; Zhejiang A. feae: 65.94%) was the predominated component. Gloydius brevicaudus antivenom exhibited the strongest capacity to immunologically recognize these two venoms, but this was mainly limited to components with high molecular masses, some of which differed between venoms. Additionally, Zhejiang A. feae venom was more toxic than Sichuan A. feae venom, and the venoms expressed remarkable differences in enzymatic activities, probably resulting from the variation in the relative abundance of specific protein families. Our findings unveil differences between the two Burmese viper groups in terms of proteomic profiles, immunoreactivity, and the biochemical functions of their venoms. This information will facilitate the management of snakebites caused by these snakes.
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20
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Casais-E-Silva LL, da Cruz-Hofling MA, Teixeira CFP. The edematogenic effect of Micrurus lemniscatus venom is dependent on venom phospholipase A 2 activity and modulated by non-neurogenic factors. Toxicol Lett 2022; 369:12-21. [PMID: 35970279 DOI: 10.1016/j.toxlet.2022.08.003] [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: 02/21/2022] [Revised: 07/14/2022] [Accepted: 08/08/2022] [Indexed: 10/15/2022]
Abstract
Coral snakes mainly cause neurotoxic symptoms in human envenomation, but experimental studies have already demonstrated several pharmacological activities in addition to these effects. This investigation was carried out with the aim of evaluating (1) non-neurogenic mechanisms involved in the inflammatory response induced by Micrurus lemniscatus venom (MLV) in rat hind paws, (2) participation of PLA2 in this response, and (3) neutralizing efficiency of commercial anti-elapid antivenom on edema. MLV promoted a rapid, significant increase in vascular permeability, influx of leukocytes, and disorganization of collagen bundles, as demonstrated by histological analysis. Several pretreatments were applied to establish the involvement of inflammatory mediators in MLV-induced edema (5 µg/paw). Treatment of animals with chlorpromazine reduced MLV-induced edema, indicating participation of TNF-α. However, the inefficiency of other pharmacological treatments suggests that eicosanoids, leukotrienes, and nitric oxide have no role in this type of edema formation. In contrast, PAF negatively modulates this venom-induced effect. MLV was recognized by anti-elapid serum, but this antivenom did not neutralize edema formation. Chemical modification of MLV with p-bromophenacyl bromide abrogated the phospholipase activity and markedly reduced edema, demonstrating PLA2 participation in MLV-induced edema. In conclusion, the non-neurogenic inflammatory profile of MLV is characterized by TNF-α-mediated edema, participation of PLA2 activity, and down-regulation by PAF. MLV induces an influx of leukocytes and destruction of collagen fibers at the site of its injection.
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Affiliation(s)
- Luciana L Casais-E-Silva
- Laboratory of Neuroimmunoendocrinology and Toxinology, Department of Bioregulation, Institute of Health Sciences (ICS), Federal University of Bahia (UFBA), Salvador, BA, Brazil.
| | - Maria Alice da Cruz-Hofling
- Department of Structural and Functional Biology, Institute of Biology, State University of Campinas (UNICAMP), Campinas, SP, Brazil
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21
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Recovery from the Neuroparalysis Caused by the Micrurus nigrocinctus Venom Is Accelerated by an Agonist of the CXCR4 Receptor. Toxins (Basel) 2022; 14:toxins14080531. [PMID: 36006193 PMCID: PMC9412299 DOI: 10.3390/toxins14080531] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 07/22/2022] [Accepted: 07/30/2022] [Indexed: 12/10/2022] Open
Abstract
Snake envenoming is a major but neglected human disease in tropical and subtropical regions. Among venomous snakes in the Americas, coral snakes of the genus Micrurus are particularly dangerous because they cause a peripheral neuroparalysis that can persist for many days or, in severe cases, progress to death. Ventilatory support and the use of snake species-specific antivenoms may prevent death from respiratory paralysis in most cases. However, there is a general consensus that additional and non-expensive treatments that can be delivered even long after the snake bite are needed. Neurotoxic degeneration of peripheral motor neurons activates pro-regenerative intercellular signaling programs, the greatest of which consist of the chemokine CXCL12α, produced by perisynaptic Schwann cells, which act on the CXCR4 receptor expressed on damaged neuronal axons. We recently found that the CXCR4 agonist NUCC-390 promotes axonal growth. Here, we show that the venom of the highly neurotoxic snake Micrurus nigrocinctus causes a complete degeneration of motor axon terminals of the soleus muscle, followed by functional regeneration whose time course is greatly accelerated by NUCC-390. These results suggest that NUCC-390 is a potential candidate for treating human patients envenomed by Micrurus nigrocinctus as well as other neurotoxic Micrurus spp. in order to improve the recovery of normal neuromuscular physiology, thus reducing the mortality and hospital costs of envenoming.
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22
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Divergent Specialization of Simple Venom Gene Profiles among Rear-Fanged Snake Genera ( Helicops and Leptodeira, Dipsadinae, Colubridae). Toxins (Basel) 2022; 14:toxins14070489. [PMID: 35878227 PMCID: PMC9319703 DOI: 10.3390/toxins14070489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2022] [Revised: 07/11/2022] [Accepted: 07/12/2022] [Indexed: 01/27/2023] Open
Abstract
Many venomous animals express toxins that show extraordinary levels of variation both within and among species. In snakes, most studies of venom variation focus on front-fanged species in the families Viperidae and Elapidae, even though rear-fanged snakes in other families vary along the same ecological axes important to venom evolution. Here we characterized venom gland transcriptomes from 19 snakes across two dipsadine rear-fanged genera (Leptodeira and Helicops, Colubridae) and two front-fanged genera (Bothrops, Viperidae; Micrurus, Elapidae). We compared patterns of composition, variation, and diversity in venom transcripts within and among all four genera. Venom gland transcriptomes of rear-fanged Helicops and Leptodeira and front-fanged Micrurus are each dominated by expression of single toxin families (C-type lectins, snake venom metalloproteinase, and phospholipase A2, respectively), unlike highly diverse front-fanged Bothrops venoms. In addition, expression patterns of congeners are much more similar to each other than they are to species from other genera. These results illustrate the repeatability of simple venom profiles in rear-fanged snakes and the potential for relatively constrained venom composition within genera.
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Pharmacological Screening of Venoms from Five Brazilian Micrurus Species on Different Ion Channels. Int J Mol Sci 2022; 23:ijms23147714. [PMID: 35887062 PMCID: PMC9318628 DOI: 10.3390/ijms23147714] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/05/2022] [Accepted: 07/07/2022] [Indexed: 12/05/2022] Open
Abstract
Coral snake venoms from the Micrurus genus are a natural library of components with multiple targets, yet are poorly explored. In Brazil, 34 Micrurus species are currently described, and just a few have been investigated for their venom activities. Micrurus venoms are composed mainly of phospholipases A2 and three-finger toxins, which are responsible for neuromuscular blockade—the main envenomation outcome in humans. Beyond these two major toxin families, minor components are also important for the global venom activity, including Kunitz-peptides, serine proteases, 5′ nucleotidases, among others. In the present study, we used the two-microelectrode voltage clamp technique to explore the crude venom activities of five different Micrurus species from the south and southeast of Brazil: M. altirostris, M. corallinus, M. frontalis, M. carvalhoi and M. decoratus. All five venoms induced full inhibition of the muscle-type α1β1δε nAChR with different levels of reversibility. We found M. altirostris and M. frontalis venoms acting as partial inhibitors of the neuronal-type α7 nAChR with an interesting subsequent potentiation after one washout. We discovered that M. altirostris and M. corallinus venoms modulate the α1β2 GABAAR. Interestingly, the screening on KV1.3 showed that all five Micrurus venoms act as inhibitors, being totally reversible after the washout. Since this activity seems to be conserved among different species, we hypothesized that the Micrurus venoms may rely on potassium channel inhibitory activity as an important feature of their envenomation strategy. Finally, tests on NaV1.2 and NaV1.4 showed that these channels do not seem to be targeted by Micrurus venoms. In summary, the venoms tested are multifunctional, each of them acting on at least two different types of targets.
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Silva-Carvalho R, Gaspar MZ, Quadros LHB, Lobo LGG, Giuffrida R, Santarém CL, Silva EO, Gerez JR, Silva NJ, Hyslop S, Lomonte B, Floriano RS. Partial efficacy of a Brazilian coralsnake antivenom and varespladib in neutralizing distinct toxic effects induced by sublethal Micrurus dumerilii carinicauda envenoming in rats. Toxicon 2022; 213:99-104. [PMID: 35489427 DOI: 10.1016/j.toxicon.2022.04.014] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 03/31/2022] [Accepted: 04/20/2022] [Indexed: 11/26/2022]
Abstract
In this work, we report the efficacy of a combination of Brazilian therapeutic coralsnake antivenom (CAV) and varespladib (phospholipase A2 inhibitor - VPL) in partially neutralizing selected toxic effects of Micrurus dumerilii carinicauda coralsnake venom in rats. Venom caused local myonecrosis and systemic neurotoxicity, nephrotoxicity, and hepatotoxicity within 2 h of injection. CAV and VPL administered separately failed to prevent most of these alterations. However, a combination of CAV plus VPL offered variable protection against venom-induced coagulation disturbances, leukocytosis, and renal and hepatic morphological alterations.
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Affiliation(s)
- Rosimeire Silva-Carvalho
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo, Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Matheus Z Gaspar
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo, Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Luiz H B Quadros
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo, Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Luís G G Lobo
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo, Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil
| | - Rogério Giuffrida
- Graduate Program in Animal Sciences, University of Western São Paulo, Rodovia Raposo Tavares Km 572, 19067-175, Presidente Prudente, SP, Brazil
| | - Cecília L Santarém
- Graduate Program in Animal Sciences, University of Western São Paulo, Rodovia Raposo Tavares Km 572, 19067-175, Presidente Prudente, SP, Brazil
| | - Elisangela O Silva
- Graduate Program in Animal Sciences, University of Western São Paulo, Rodovia Raposo Tavares Km 572, 19067-175, Presidente Prudente, SP, Brazil
| | - Juliana R Gerez
- Department of Histology, State University of Londrina (UEL), Rodovia Celso Garcia Cid Km 380, 86057-970, Londrina, PR, Brazil
| | - Nelson J Silva
- Graduate Program in Environmental Sciences and Health, School of Medical, Pharmaceutical and Biomedical Sciences, Pontifical Catholic University of Goiás (PUC-Goiás), 74605-140, Goiânia, GO, Brazil
| | - Stephen Hyslop
- Section of Pharmacology, Department of Translational Medicine, Faculty of Medical Sciences, State University of Campinas (UNICAMP), Rua Tessália Vieira de Camargo, 126, 13083-887, Campinas, SP, Brazil
| | - Bruno Lomonte
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, 11501, San José, Costa Rica.
| | - Rafael S Floriano
- Laboratory of Toxinology and Cardiovascular Research, Graduate Program in Health Sciences, University of Western São Paulo, Rodovia Raposo Tavares Km 572, B2-205, 19067-175, Presidente Prudente, SP, Brazil.
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Mena G, Chaves-Araya S, Chacón J, Török E, Török F, Bonilla F, Sasa M, Gutiérrez JM, Lomonte B, Fernández J. Proteomic and toxicological analysis of the venom of Micrurus yatesi and its neutralization by an antivenom. Toxicon X 2022; 13:100097. [PMID: 35243330 PMCID: PMC8864321 DOI: 10.1016/j.toxcx.2022.100097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2021] [Revised: 01/31/2022] [Accepted: 02/02/2022] [Indexed: 11/22/2022] Open
Abstract
Coralsnakes belong to the family Elapidae and possess venoms which are lethal to humans and can be grouped based on the predominance of either three finger toxins (3FTxs) or phospholipases A2 (PLA2s). A proteomic and toxicological analysis of the venom of the coralsnake Micrurus yatesi was performed. This species, distributed in southeastern Costa Rica, was formerly considered a subspecies of M. alleni. Results showed that this venom is PLA2-rich, in contrast with the previously studied venom of Micrurus alleni. Toxicological evaluation of the venom, in accordance with proteomic data, revealed that it has a markedly higher in vitro PLA2 activity upon a synthetic substrate than M. alleni. The evaluation of in vivo myotoxicity in CD-1 mice using histological evaluation and plasma creatine kinase release also showed that M. yatesi venom caused muscle damage. A commercial equine antivenom prepared using the venom of Micrurus nigrocinctus displayed a similar recognition of the venoms of M. yatesi and M. nigrocinctus by enzyme immunoassay. This antivenom also immunorecognized the main fractions of the venom of M. yatesi and was able to neutralize its lethal effect in a murine model. The venom proteome of Micrurus yatesi was determined. The venom of Micrurus yatesi is a Phospholipase A2-rich venom. When injected in mice, the venom of Micrurus yatesi caused muscle damage. An antivenom immunorecognized the main fractions of Micrurus yatesi venom. The antivenom was able to neutralize the lethal activity of the venom of Micrurus yatesi.
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Tasoulis T, Pukala TL, Isbister GK. Investigating Toxin Diversity and Abundance in Snake Venom Proteomes. Front Pharmacol 2022; 12:768015. [PMID: 35095489 PMCID: PMC8795951 DOI: 10.3389/fphar.2021.768015] [Citation(s) in RCA: 34] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Accepted: 12/10/2021] [Indexed: 12/15/2022] Open
Abstract
Understanding snake venom proteomes is becoming increasingly important to understand snake venom biology, evolution and especially clinical effects of venoms and approaches to antivenom development. To explore the current state of snake venom proteomics and transcriptomics we investigated venom proteomic methods, associations between methodological and biological variability and the diversity and abundance of protein families. We reviewed available studies on snake venom proteomes from September 2017 to April 2021. This included 81 studies characterising venom proteomes of 79 snake species, providing data on relative toxin abundance for 70 species and toxin diversity (number of different toxins) for 37 species. Methodologies utilised in these studies were summarised and compared. Several comparative studies showed that preliminary decomplexation of crude venom by chromatography leads to increased protein identification, as does the use of transcriptomics. Combining different methodological strategies in venomic approaches appears to maximize proteome coverage. 48% of studies used the RP-HPLC →1D SDS-PAGE →in-gel trypsin digestion → ESI -LC-MS/MS pathway. Protein quantification by MS1-based spectral intensity was used twice as commonly as MS2-based spectral counting (33–15 studies). Total toxin diversity was 25–225 toxins/species, with a median of 48. The relative mean abundance of the four dominant protein families was for elapids; 3FTx–52%, PLA2–27%, SVMP–2.8%, and SVSP–0.1%, and for vipers: 3FTx–0.5%, PLA2–24%, SVMP–27%, and SVSP–12%. Viper venoms were compositionally more complex than elapid venoms in terms of number of protein families making up most of the venom, in contrast, elapid venoms were made up of fewer, but more toxin diverse, protein families. No relationship was observed between relative toxin diversity and abundance. For equivalent comparisons to be made between studies, there is a need to clarify the differences between methodological approaches and for acceptance of a standardised protein classification, nomenclature and reporting procedure. Correctly measuring and comparing toxin diversity and abundance is essential for understanding biological, clinical and evolutionary implications of snake venom composition.
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Affiliation(s)
- Theo Tasoulis
- Clinical Toxicology Research Group, University of Newcastle, Callaghan, NSW, Australia
| | - Tara L Pukala
- Department of Chemistry, University of Adelaide, Adelaide, SA, Australia
| | - Geoffrey K Isbister
- Clinical Toxicology Research Group, University of Newcastle, Callaghan, NSW, Australia
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27
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In Vivo Cardiotoxic Potential of Micrurus frontalis Venom. Cardiovasc Toxicol 2022; 22:181-190. [DOI: 10.1007/s12012-021-09713-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Accepted: 12/13/2021] [Indexed: 11/26/2022]
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28
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Bosque RJ, Hyseni C, Santos MLG, Rangel E, Da Silva Dias CJ, Hearin JB, Da Silva NJ, Domingos FMCB, Colli GR, Noonan BP. Müllerian mimicry and the coloration patterns of sympatric coral snakes. Biol J Linn Soc Lond 2022. [DOI: 10.1093/biolinnean/blab155] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Coral snakes in the genus Micrurus are venomous, aposematic organisms that signal danger to predators through vivid coloration. Previous studies found that they serve as models to several harmless species of Batesian mimics. However, the extent to which Micrurus species engage in Müllerian mimicry remains poorly understood. We integrate detailed morphological and geographical distribution data to investigate if coral snakes are Müllerian mimics. We found that coloration is spatially structured and that Micrurus species tend to be more similar where they co-occur. Though long supposed, we demonstrate for the first time that coral snakes might indeed be Müllerian mimics as they show some convergence in coloration patterns. Additionally, we found that the length of red-coloured rings in Micrurus is conserved, even at large geographic scales. This finding suggests that bright red rings may be under more substantial stabilizing selection than other aspects of coloration and probably function as a generalized signal for deterring predators.
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Affiliation(s)
- Renan Janke Bosque
- Universidade de Brasília, Instituto de Biologia, Departamento de Zoologia, Brasília, Distrito Federal, Brazil
| | - Chaz Hyseni
- Uppsala University, Department of Ecology and Genetics, Uppsala, Uppsala County, Sweden
- USDA Forest Service, Southern Research Station, Center for Bottomland Hardwoods Research, Oxford, Mississippi, USA
| | | | - Eduardo Rangel
- The University of Mississippi, Department of Biology, University, Mississippi, USA
| | - Camila Juliana Da Silva Dias
- Universidade Federal de Mato Grosso, Instituto de Ciências Biológicas e da Saúde, Pontal do Araguaia, Mato Grosso, Brazil
| | - Jacob Beathea Hearin
- The University of Mississippi, Department of Biology, University, Mississippi, USA
| | - Nelson Jorge Da Silva
- Pontifícia Universidade Católica de Goiás, Escola de Ciências Médicas e da Vida, Goiânia, Goías, Brazil
| | | | - Guarino Rinaldi Colli
- Universidade de Brasília, Instituto de Biologia, Departamento de Zoologia, Brasília, Distrito Federal, Brazil
| | - Brice Patrick Noonan
- The University of Mississippi, Department of Biology, University, Mississippi, USA
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29
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Baudou FG, Rodriguez JP, Fusco L, de Roodt AR, De Marzi MC, Leiva L. South American snake venoms with abundant neurotoxic components. Composition and toxicological properties. A literature review. Acta Trop 2021; 224:106119. [PMID: 34481791 DOI: 10.1016/j.actatropica.2021.106119] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 08/18/2021] [Accepted: 08/19/2021] [Indexed: 01/18/2023]
Abstract
In South America there are three snake genera with predominantly neurotoxic venoms: Crotalus, Micrurus and Hydrophis, which include nine species/subspecies, 97 species and a single marine species, respectively. Although accidents with neurotoxic venoms are less frequent than those with anticoagulant, cytotoxic or necrotic venoms (e.g. from Bothrops), they are of major public health importance. Venoms from genus Crotalus have been extensively studied, while data on the venoms from the other two genera are very limited, especially for Hydrophis. The venoms of North and South American Crotalus species show biochemical and physiopathological differences. The former species cause bothrops-like envenomation symptoms, while the latter mainly have neurotoxic and myotoxic effects, leading to respiratory paralysis and, occasionally, renal failure by myoglobinuria and death, often with no local lesions. Micrurus and Hydrophis also cause neurotoxic envenomations. Many studies have isolated, identified and characterized new enzymes and toxins, thus expanding the knowledge of snake venom composition. The present review summarizes the currently available information on neurotoxic venoms from South American snakes, with a focus on protein composition and toxicological properties. It also includes some comments concerning potential medical applications of elapid and crotalic toxins.
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Affiliation(s)
- Federico G Baudou
- Universidad Nacional de Luján (UNLu), Depto. de Ciencias Básicas, Luján, Buenos Aires, Argentina; Laboratorio de Inmunología, Instituto de Ecología y Desarrollo Sustentable (INEDES), UNLu-CONICET, Luján, Buenos Aires, Argentina.
| | - Juan P Rodriguez
- Laboratorio de Investigaciones Bioquímicas de la Facultad de Medicina (LIBIM), Instituto de Química Básica y Aplicada del Nordeste Argentino (IQUIBA-NEA), Universidad Nacional del Nordeste, Consejo Nacional de Investigaciones Científicas y Técnicas (UNNE-CONICET), Corrientes, Argentina
| | - Luciano Fusco
- Laboratorio de Investigación en Proteínas (LabInPro), IQUIBA-NEA (UNNE, CONICET), FaCENA, (UNNE), Corrientes, Argentina
| | - Adolfo R de Roodt
- Área Investigación y Desarrollo-Venenos, Instituto Nacional de Producción de Biológicos, Administración Nacional de Laboratorios e Institutos de Salud "Dr. Carlos G. Malbrán", Ministerio de Salud de la Nación, Argentina; Primera Cátedra de Toxicología, Facultad de Medicina, Universidad de Buenos Aires, Argentina; Laboratorio de Toxinopatología, Centro de Patología Experimental y Aplicada, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Mauricio C De Marzi
- Universidad Nacional de Luján (UNLu), Depto. de Ciencias Básicas, Luján, Buenos Aires, Argentina; Laboratorio de Inmunología, Instituto de Ecología y Desarrollo Sustentable (INEDES), UNLu-CONICET, Luján, Buenos Aires, Argentina
| | - Laura Leiva
- Laboratorio de Investigación en Proteínas (LabInPro), IQUIBA-NEA (UNNE, CONICET), FaCENA, (UNNE), Corrientes, Argentina
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30
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In vivo treatment with varespladib, a phospholipase A 2 inhibitor, prevents the peripheral neurotoxicity and systemic disorders induced by Micrurus corallinus (coral snake) venom in rats. Toxicol Lett 2021; 356:54-63. [PMID: 34774704 DOI: 10.1016/j.toxlet.2021.11.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 10/14/2021] [Accepted: 11/09/2021] [Indexed: 11/23/2022]
Abstract
In this study, we investigated the action of varespladib (VPL) alone or in combination with a coral snake antivenom (CAV) on the local and systemic effects induced by Micrurus corallinus venom in rats. Adult male Wistar rats were exposed to venom (1.5 mg/kg - i.m.) and immediately treated with CAV (antivenom:venom ratio 1:1.5 'v/w' - i.p.), VPL (0.5 mg/kg - i.p.), or both of these treatments. The animals were monitored for 120 min and then anesthetized to collect blood samples used for haematological and serum biochemical analysis; after euthanasia, skeletal muscle, renal and hepatic tissue samples were collected for histopathological analysis. M. corallinus venom caused local oedema without subcutaneous haemorrhage or apparent necrosis formation, although there was accentuated muscle morphological damage; none of the treatments prevented oedema formation but the combination of CAV and VPL reduced venom-induced myonecrosis. Venom caused neuromuscular paralysis and respiratory impairment in approximately 60 min following envenomation; CAV alone did not prevent the neurotoxic action, whereas VPL alone prevented neurotoxic symptoms developing as did the combination of CAV and VPL. Venom induced significant increase of serum CK and AST release, mostly due to local and systemic myotoxicity, which was partially prevented by the combination of CAV and VPL. The release of hepatotoxic serum biomarkers (LDH and ALP) induced by M. corallinus venom was not prevented by CAV and VPL when individually administered; their combination effectively prevented ALP release. The venom-induced nephrotoxicity (increase in serum creatinine concentration) was prevented by all the treatments. VPL alone or in combination with CAV significantly prevented the venom-induced lymphocytosis. In conclusion, VPL shows to be effective at preventing the neurotoxic, nephrotoxic, and inflammatory activities of M. corallinus venom. In addition, VPL acts synergistically with antivenom to prevent a number of systemic effects caused by M. corallinus venom.
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31
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Calvete JJ, Pla D, Els J, Carranza S, Damm M, Hempel BF, John EBO, Petras D, Heiss P, Nalbantsoy A, Göçmen B, Süssmuth RD, Calderón-Celis F, Nosti AJ, Encinar JR. Combined Molecular and Elemental Mass Spectrometry Approaches for Absolute Quantification of Proteomes: Application to the Venomics Characterization of the Two Species of Desert Black Cobras, Walterinnesia aegyptia and Walterinnesia morgani. J Proteome Res 2021; 20:5064-5078. [PMID: 34606723 PMCID: PMC8576837 DOI: 10.1021/acs.jproteome.1c00608] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
![]()
We report a novel hybrid, molecular
and elemental mass spectrometry
(MS) setup for the absolute quantification of snake venom proteomes
shown here for two desert black cobra species within the genus Walterinnesia, Walterinnesia aegyptia and Walterinnesia morgani. The experimental
design includes the decomplexation of the venom samples by reverse-phase
chromatography independently coupled to four mass spectrometry systems:
the combined bottom-up and top-down molecular MS for protein identification
and a parallel reverse-phase microbore high-performance liquid chromatograph
(RP-μHPLC) on-line to inductively coupled plasma (ICP-MS/MS)
elemental mass spectrometry and electrospray ionization quadrupole
time-of-flight mass spectrometry (ESI-QToF MS). This allows to continuously
record the absolute sulfur concentration throughout the chromatogram
and assign it to the parent venom proteins separated in the RP-μHPLC-ESI-QToF
parallel run via mass profiling. The results provide a locus-resolved
and quantitative insight into the three desert black cobra venom proteome
samples. They also validate the units of measure of our snake venomics
strategy for the relative quantification of snake venom proteomes
as % of total venom peptide bonds as a proxy for the % by weight of
the venom toxins/toxin families. In a more general context, our work
may pave the way for broader applications of hybrid elemental/molecular
MS setups in diverse areas of proteomics.
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Affiliation(s)
- Juan J Calvete
- Laboratorio de Venómica Evolutiva y Traslational, Instituto de Biomedicina de Valencia, Consejo Superior de Investigaciones Científicas (CSIC), Jaume Roig 11, 46010 Valencia, Spain
| | - Davinia Pla
- Laboratorio de Venómica Evolutiva y Traslational, Instituto de Biomedicina de Valencia, Consejo Superior de Investigaciones Científicas (CSIC), Jaume Roig 11, 46010 Valencia, Spain
| | - Johannes Els
- Environment and Protected Areas Authority, 82828 Sharjah, United Arab Emirates
| | - Salvador Carranza
- Institute of Evolutionary Biology, CSIC-Universitat Pompeu Fabra, 08003 Barcelona, Spain
| | - Maik Damm
- Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Benjamin-Florian Hempel
- Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany.,BIH Center for Regenerative Therapies BCRT, Charité-Universitätsmedizin Berlin, 13353 Berlin, Germany
| | - Elisa B O John
- Center of Biotechnology, Universidade Federal do Rio Grande do Sul, CEP 91501-970 Porto Alegre, RS, Brazil
| | - Daniel Petras
- CMFI Cluster of Excellence, Interfaculty Institute of Microbiology and Medicine, University of Túbingen, 72076 Tübingen, Germany
| | - Paul Heiss
- Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | - Ayse Nalbantsoy
- Department of Bioengineering, Faculty of Engineering, Ege University, 35100 Bornova, Izmir, Turkey
| | - Bayram Göçmen
- Zoology Section, Department of Biology, Faculty of Science, Ege University, 35100 Bornova, Izmir, Turkey
| | - Roderich D Süssmuth
- Department of Chemistry, Technische Universität Berlin, 10623 Berlin, Germany
| | | | - Alicia Jiménez Nosti
- Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Spain
| | - Jorge Ruiz Encinar
- Department of Physical and Analytical Chemistry, University of Oviedo, 33006 Oviedo, Spain
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32
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Grego KF, Rocha MMT, Morais-Zani K, Tanaka-Azevedo AM, Sant'Anna SS. Length, weight, and longevity record for Micrurus frontalis (Duméril, Bibron & Duméril, 1854). BRAZ J BIOL 2021; 83:e251764. [PMID: 34669809 DOI: 10.1590/1519-6984.251764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2021] [Accepted: 06/10/2021] [Indexed: 11/21/2022] Open
Affiliation(s)
- K F Grego
- Instituto Butantan, Laboratório de Herpetologia, São Paulo, SP, Brasil
| | - M M T Rocha
- Instituto Butantan, Laboratório de Herpetologia, São Paulo, SP, Brasil
| | - K Morais-Zani
- Instituto Butantan, Laboratório de Herpetologia, São Paulo, SP, Brasil
| | | | - S S Sant'Anna
- Instituto Butantan, Laboratório de Herpetologia, São Paulo, SP, Brasil
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33
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Rafael de Roodt A, Lanari LC, Ramírez JE, Gómez C, Barragán J, Litwin S, Henriët van Grootheest J, Desio M, Dokmetjian JC, Dolab JA, Damin CF, Alagón A. Cross-reactivity of some Micrurus venoms against experimental and therapeutic anti-Micrurus antivenoms. Toxicon 2021; 200:153-164. [PMID: 34303716 DOI: 10.1016/j.toxicon.2021.07.011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Revised: 06/25/2021] [Accepted: 07/15/2021] [Indexed: 01/22/2023]
Abstract
We developed experimental equine polyvalent and monovalent antivenoms against the venoms of Micrurus (M.) fulvius, M. nigrocinctus and M. surinamensis and studied their immunochemical reactivity on the venoms used as immunogens and on M. pyrrhocryptus, M altirostris and M. balyocoriphus venoms. Assessment of the neutralizing capacity of the polyvalent experimental antivenom was based on inhibition of lethality (preincubation and rescue assay experiments in mice) and indirect hemolytic and phospholipase activities. The immunochemical reactivity and neutralizing capacity were compared with those of two therapeutic antivenoms used for the treatment of coral snake envenomation in North America and in Argentina. In general, the experimental antivenom conferred a comparable level of neutralization against the venoms used as immunogens when compared to the therapeutic antivenoms and a certain level of cross-neutralization against the other venoms. The results suggest the need for additional venoms in the immunogenic mixture used, in order to obtain a broad spectrum anti-Micrurus antivenom with a good neutralizing potency. Paraspecific neutralization of South American coral snake venoms, although present at a higher level than the neutralization conferred by available nonspecific Micrurus therapeutic antivenoms, was rather low in relation to the specific neutralizing capacity.
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Affiliation(s)
- Adolfo Rafael de Roodt
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Buenos Aires, Argentina; Primera Cátedra de Toxicología, Facultad de Medicina, Universidad de Buenos Aires, Argentina.
| | - Laura Cecilia Lanari
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Buenos Aires, Argentina
| | | | - Carlos Gómez
- Cátedra de Inmunología, Facultad de Ciencias Veterinarias de la Universidad Nacional de La Plata, Argentina
| | - Javier Barragán
- Cátedra de Inmunología, Facultad de Ciencias Veterinarias de la Universidad Nacional de La Plata, Argentina
| | - Silvana Litwin
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Buenos Aires, Argentina
| | - Jantine Henriët van Grootheest
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Buenos Aires, Argentina
| | - Marcela Desio
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Buenos Aires, Argentina
| | - José Christian Dokmetjian
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Buenos Aires, Argentina
| | - Jorge Adrián Dolab
- Instituto Nacional de Producción de Biológicos, ANLIS "Dr. Carlos G. Malbrán", Ministerio de Salud, Buenos Aires, Argentina
| | - Carlos Fabián Damin
- Primera Cátedra de Toxicología, Facultad de Medicina, Universidad de Buenos Aires, Argentina
| | - Alejandro Alagón
- Instituto de Biotecnología de la Universidad Nacional Autónoma de México, Cuernavaca, Morelos, Mexico
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Calvete JJ, Lomonte B, Saviola AJ, Bonilla F, Sasa M, Williams DJ, Undheim EA, Sunagar K, Jackson TN. Mutual enlightenment: A toolbox of concepts and methods for integrating evolutionary and clinical toxinology via snake venomics and the contextual stance. Toxicon X 2021; 9-10:100070. [PMID: 34195606 PMCID: PMC8234350 DOI: 10.1016/j.toxcx.2021.100070] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 06/01/2021] [Accepted: 06/07/2021] [Indexed: 12/21/2022] Open
Abstract
Snakebite envenoming is a neglected tropical disease that may claim over 100,000 human lives annually worldwide. Snakebite occurs as the result of an interaction between a human and a snake that elicits either a defensive response from the snake or, more rarely, a feeding response as the result of mistaken identity. Snakebite envenoming is therefore a biological and, more specifically, an ecological problem. Snake venom itself is often described as a "cocktail", as it is a heterogenous mixture of molecules including the toxins (which are typically proteinaceous) responsible for the pathophysiological consequences of envenoming. The primary function of venom in snake ecology is pre-subjugation, with defensive deployment of the secretion typically considered a secondary function. The particular composition of any given venom cocktail is shaped by evolutionary forces that include phylogenetic constraints associated with the snake's lineage and adaptive responses to the snake's ecological context, including the taxa it preys upon and by which it is predated upon. In the present article, we describe how conceptual frameworks from ecology and evolutionary biology can enter into a mutually enlightening relationship with clinical toxinology by enabling the consideration of snakebite envenoming from an "ecological stance". We detail the insights that may emerge from such a perspective and highlight the ways in which the high-fidelity descriptive knowledge emerging from applications of -omics era technologies - "venomics" and "antivenomics" - can combine with evolutionary explanations to deliver a detailed understanding of this multifactorial health crisis.
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Affiliation(s)
- Juan J. Calvete
- Evolutionary and Translational Venomics Laboratory, Instituto de Biomedicina de Valencia, CSIC, Valencia, Spain
| | - Bruno Lomonte
- Unidad de Proteómica, Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Anthony J. Saviola
- Department of Biochemistry and Molecular Genetics, University of Colorado Anschutz Medical Campus, Aurora, CO, USA
| | - Fabián Bonilla
- Laboratorio de Investigación en Animales Peligrosos (LIAP), Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Mahmood Sasa
- Laboratorio de Investigación en Animales Peligrosos (LIAP), Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
- Museo de Zoología, Centro de Investigaciones en Biodiversidad y Ecología Tropical, Universidad de Costa Rica, Costa Rica
| | | | - Eivind A.B. Undheim
- Centre for Biodiversity Dynamics, Department of Biology, NTNU, Trondheim, Norway
- Centre for Ecological and Evolutionary Synthesis, Department of Biosciences, University of Oslo, Oslo, Norway
| | - Kartik Sunagar
- Evolutionary Venomics Lab, Centre for Ecological Sciences, Indian Institute of Science, Bangalore, Karnataka, India
| | - Timothy N.W. Jackson
- Australian Venom Research Unit, Department of Pharmacology and Therapeutics, University of Melbourne, Melbourne, Australia
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35
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Rodrigues CFB, Zdenek CN, Serino-Silva C, de Morais-Zani K, Grego KF, Bénard-Valle M, Neri-Castro E, Alagón A, Tanaka-Azevedo AM, Fry BG. BoaγPLI from Boa constrictor Blood is a Broad-Spectrum Inhibitor of Venom PLA 2 Pathophysiological Actions. J Chem Ecol 2021; 47:907-914. [PMID: 34165686 DOI: 10.1007/s10886-021-01289-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 05/24/2021] [Accepted: 06/09/2021] [Indexed: 11/30/2022]
Abstract
The use of venom in predation exerts a corresponding selection pressure for the evolution of venom resistance. One of the mechanisms related to venom resistance in animals (predators or prey of snakes) is the presence of molecules in the blood that can bind venom toxins, and inhibit their pharmacological effects. One such toxin type are venom phospholipase A2s (PLA2s), which have diverse effects including anticoagulant, myotoxic, and neurotoxic activities. BoaγPLI isolated from the blood of Boa constrictor has been previously shown to inhibit venom PLA2s that induced myotoxic and edematogenic activities. Recently, in addition to its previously described and very potent neurotoxic effect, the venoms of American coral snakes (Micrurus species) have been shown to have anticoagulant activity via PLA2 toxins. As coral snakes eat other snakes as a major part of their diet, neonate Boas could be susceptible to predation by this sympatric species. Thus, this work aimed to ascertain if BoaγPLI provided a protective effect against the anticoagulant toxicity of venom from the model species Micrurus laticollaris in addition to its ability shown previously against other toxin types. Using a STA R Max coagulation analyser robot to measure the effect upon clotting time, and TEG5000 thromboelastographers to measure the effect upon clot strength, we evaluated the ability of BoaγPLI to inhibit M. laticollaris venom. Our results indicate that BoaγPLI is efficient at inhibiting the M. laticollaris anticoagulant effect, reducing the time of coagulation (restoring them closer to non-venom control values) and increasing the clot strength (restoring them closer to non-venom control values). These findings demonstrate that endogenous PLA2 inhibitors in the blood of non-venomous snakes are multi-functional and provide broad resistance against a myriad of venom PLA2-driven toxic effects including coagulotoxicity, myotoxicity, and neurotoxicity. This novel form of resistance could be evidence of selective pressures caused by predation from venomous snakes and stresses the need for field-based research aimed to expand our understanding of the evolutionary dynamics of such chemical arms race.
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Affiliation(s)
- Caroline Fabri Bittencourt Rodrigues
- Venom Evolution Lab, School of Biological Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia
- Laboratório de Herpetologia, Instituto Butantan, São Paulo, Brazil
- Programa de Pós-Graduação Interunidades Em Biotecnologia, USP, IPT e Instituto Butantan, São Paulo, Brazil
| | - Christina N Zdenek
- Venom Evolution Lab, School of Biological Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia
| | - Caroline Serino-Silva
- Laboratório de Herpetologia, Instituto Butantan, São Paulo, Brazil
- Programa de Pós-Graduação Interunidades Em Biotecnologia, USP, IPT e Instituto Butantan, São Paulo, Brazil
| | - Karen de Morais-Zani
- Laboratório de Herpetologia, Instituto Butantan, São Paulo, Brazil
- Programa de Pós-Graduação Interunidades Em Biotecnologia, USP, IPT e Instituto Butantan, São Paulo, Brazil
| | | | - Melisa Bénard-Valle
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, 62210, Cuernavaca, Morelos, Mexico
| | - Edgar Neri-Castro
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, 62210, Cuernavaca, Morelos, Mexico
| | - Alejandro Alagón
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad 2001, 62210, Cuernavaca, Morelos, Mexico
| | - Anita Mitico Tanaka-Azevedo
- Laboratório de Herpetologia, Instituto Butantan, São Paulo, Brazil
- Programa de Pós-Graduação Interunidades Em Biotecnologia, USP, IPT e Instituto Butantan, São Paulo, Brazil
| | - Bryan Grieg Fry
- Venom Evolution Lab, School of Biological Sciences, The University of Queensland, St. Lucia, QLD, 4072, Australia.
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Damm M, Hempel BF, Süssmuth RD. Old World Vipers-A Review about Snake Venom Proteomics of Viperinae and Their Variations. Toxins (Basel) 2021; 13:toxins13060427. [PMID: 34204565 PMCID: PMC8235416 DOI: 10.3390/toxins13060427] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 06/11/2021] [Accepted: 06/16/2021] [Indexed: 12/12/2022] Open
Abstract
Fine-tuned by millions of years of evolution, snake venoms have frightened but also fascinated humanity and nowadays they constitute potential resources for drug development, therapeutics and antivenoms. The continuous progress of mass spectrometry techniques and latest advances in proteomics workflows enabled toxinologists to decipher venoms by modern omics technologies, so-called ‘venomics’. A tremendous upsurge reporting on snake venom proteomes could be observed. Within this review we focus on the highly venomous and widely distributed subfamily of Viperinae (Serpentes: Viperidae). A detailed public literature database search was performed (2003–2020) and we extensively reviewed all compositional venom studies of the so-called Old-World Vipers. In total, 54 studies resulted in 89 venom proteomes. The Viperinae venoms are dominated by four major, four secondary, six minor and several rare toxin families and peptides, respectively. The multitude of different venomics approaches complicates the comparison of venom composition datasets and therefore we differentiated between non-quantitative and three groups of quantitative workflows. The resulting direct comparisons within these groups show remarkable differences on the intra- and interspecies level across genera with a focus on regional differences. In summary, the present compilation is the first comprehensive up-to-date database on Viperinae venom proteomes and differentiating between analytical methods and workflows.
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Affiliation(s)
- Maik Damm
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany;
| | - Benjamin-Florian Hempel
- BIH Center for Regenerative Therapies, Berlin Institute of Health at Charité-Universitätsmedizin Berlin, (BCRT), 10117 Berlin, Germany;
| | - Roderich D. Süssmuth
- Department of Chemistry, Technische Universität Berlin, Straße des 17. Juni 135, 10623 Berlin, Germany;
- Correspondence: ; Tel.: +49-(0)30-314-24205
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Development and Cross-Amplification of Microsatellite Markers for Micrurus surinamensis (Elapidae). J HERPETOL 2021. [DOI: 10.1670/19-081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Reis LDPG, Botelho AFM, Novais CR, Fiúza ATL, Barreto MSO, Ferreira MG, Bonilla C, Chavez-Olórtegui C, Melo MM. Cardiotoxic Effects of Micrurus surinamensis (Cuvier, 1817) Snake Venom. Cardiovasc Toxicol 2021; 21:462-471. [PMID: 33559838 DOI: 10.1007/s12012-021-09640-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/03/2020] [Accepted: 01/28/2021] [Indexed: 11/25/2022]
Abstract
Micrurus surinamensis is a coral snake from the Elapidae family of wide distribution in Amazonia Forest. Its venom contains neurotoxins that induce muscular and respiratory paralysis; however, its cardiovascular action is not yet characterized. The aim of this study was to investigate the cardiotoxic effects caused by M. surinamensis poisoning in rodents. Twelve guinea pigs (Cavia porcellus) were distributed in two groups (n = 6) named as control and envenomed. The control group received 0.2 ml of PBS/BSA via intramuscular injection (IM), while envenomed animals received 0.75 µg of venom per g of body weight, also via IM. Electrocardiographic examination (ECG) and biochemical serum tests were conducted before and 2 h after inoculation. ECG of the envenomed animals revealed severe progressive arrhythmias including atrioventricular block, supraventricular, and ventricular extrasystoles. Serum biochemistry showed significant increase in CK, CK-MB, and LDH enzymes corroborating the skeletal and cardiac muscle damage. Myonecrosis and degeneration were observed in both skeletal and heart muscle; nevertheless, transmission electron microscopy revealed cardiac muscle fibers fragmentation. In conclusion, M. surinamensis venom has a potent cardiotoxic activity eliciting arrhythmogenic effects and heart damage after only 2 h of envenomation.
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Affiliation(s)
- Lilian de Paula Gonçalves Reis
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Ana Flávia Machado Botelho
- Departamento de Medicina Veterinária, Escola de Veterinária e Zootecnia, Universidade Federal de Goiás, Rodovia Goiânia- Nova Veneza, km 8, Campus Samambaia, Goiânia, GO, 74690-900, Brazil.
| | - Clara Rojo Novais
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Aparecida Tatiane Lino Fiúza
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Maira Souza Oliveira Barreto
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marina Guimarães Ferreira
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | | | - Carlos Chavez-Olórtegui
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil
| | - Marília Martins Melo
- Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil.
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Bénard-Valle M, Neri-Castro E, Elizalde-Morales N, Olvera-Rodríguez A, Strickland J, Acosta G, Alagón A. Protein composition and biochemical characterization of venom from Sonoran Coral Snakes (Micruroides euryxanthus). Biochimie 2021; 182:206-216. [PMID: 33485932 DOI: 10.1016/j.biochi.2021.01.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 01/05/2021] [Accepted: 01/06/2021] [Indexed: 11/16/2022]
Abstract
The elapid genus, Micruroides, is considered the sister clade of all New World coral snakes (Genus Micrurus), is monotypic, and is represented by Sonoran Coral Snakes, Micruroides euryxanthus. Coral snakes of the genus Micrurus have been reported to have venoms that are predominantly composed of phospholipases A2 (PLA2) or three finger toxins (3FTx), but the venoms of the genus Micruroides are almost completely unstudied. Here, we present the first description of the venom of M. euryxanthus including identification of some proteins as well as transcriptomic, and biological activity assays. The most abundant components within M. euryxanthus venom are 3FTxs (62.3%) and there was relatively low proportion of PLA2s (14.2%). The venom phenotype supports the hypothesis that the common ancestor of Micrurus and Micruroides had a 3FTx-dominated venom. Within the venom, there were two nearly identical α-neurotoxins (α-Ntx), one of which was designated Eurytoxin, that account for approximately 60% of the venom's lethality to mice. Eurytoxin was cloned, expressed in a soluble and active form, and used to produce rabbit hyperimmune serum. This allowed the analysis of its immunochemical properties, showing them to be different from the recombinant αNTx D.H., present in the venoms of some species of Micrurus. Finally, we observed that the commercial antivenom produced in Mexico for coral snake envenomation is unable to neutralize the lethality from M. euryxanthus venom. This work allowed the classification of Micruroides venom into the 3FTx-predominant group and identified the main components responsible for toxicity to mice.
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Affiliation(s)
- Melisa Bénard-Valle
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Colonia Chamilpa, CP: 62210, Cuernavaca, Morelos, Mexico
| | - Edgar Neri-Castro
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Colonia Chamilpa, CP: 62210, Cuernavaca, Morelos, Mexico
| | - Nicolás Elizalde-Morales
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Colonia Chamilpa, CP: 62210, Cuernavaca, Morelos, Mexico
| | - Alejandro Olvera-Rodríguez
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Colonia Chamilpa, CP: 62210, Cuernavaca, Morelos, Mexico
| | - Jason Strickland
- Department of Biological Sciences, Clemson University, Clemson, SC, 29632, USA; Department of Biology, University of South Alabama, Mobile, AL, 36688, USA
| | - Gerardo Acosta
- MIVIA. Museo Itinerante de Vida Animal, Hermosillo, Sonora, Mexico
| | - Alejandro Alagón
- Instituto de Biotecnología, Universidad Nacional Autónoma de México, Av. Universidad # 2001, Colonia Chamilpa, CP: 62210, Cuernavaca, Morelos, Mexico.
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Archundia IG, de la Rosa G, Olvera F, Calderón A, Benard-Valle M, Alagón A, Corzo G. Assessment of neutralization of Micrurus venoms with a blend of anti-Micrurus tener and anti-ScNtx antibodies. Vaccine 2021; 39:1000-1006. [PMID: 33423840 DOI: 10.1016/j.vaccine.2020.12.052] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Revised: 12/11/2020] [Accepted: 12/14/2020] [Indexed: 02/02/2023]
Abstract
BACKGROUND Micrurus venoms contain two main groups of toxic protein components: short-chain α-neurotoxins (SNtx) and phospholipases type A2 (PLA2). In North America, generally, the Micrurus venoms have low abundance of SNtx compared to that of PLA2s; however, both are highly toxic to mammals, and consequently both can play a major role in the envenomation processes. Concerning the commercial horse-derived antivenoms against Micrurus from the North America region, they contain a relatively large amount of antibodies against PLA2s, and a low content of antibodies against short chain α-neurotoxins. This is mainly due to the lower relative abundance of SNtxs, and also to its poor immunogenicity due to their size and nature. Hence, Micrurus antivenoms made in North America usually present low neutralizing capacity towards Micrurus venoms whose lethality depend largely on short chain α-neurotoxins, such as South American Micrurus species. METHODS Horses were hyperimmunized with either the venom of M. tener (PLA2-predominant) or a recombinant short-chain consensus α-neurotoxin (ScNtx). Then, the combination of the two monospecific horse antibodies (anti-M. tener and anti-ScNtx) was used to test their efficacy against eleven Micrurus venoms. RESULTS The blend of anti-M. tener and anti-ScNtx antibodies had a better capacity to neutralize the lethality of diverse species from North, Central and South American Micrurus venoms. The antibodies combination neutralized both the ScNtx and ten out of eleven Micrurus venom tested, and particularly, it neutralized the venoms of M. distans and M. laticollaris that were neither neutralized by monospecific anti-M. tener nor anti-ScNtx. CONCLUSIONS These results provide a proof-of-principle for using recombinant immunogens to enrich poor or even non-neutralizing antisera against elapid venoms containing short chain α-neurotoxins to develop antivenoms with higher effectiveness and broader neutralizing capacity.
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Affiliation(s)
- Irving G Archundia
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología - UNAM, Av. Universidad 2001, Cuernavaca, Morelos 62210, Mexico
| | - Guillermo de la Rosa
- The Donnelly Centre for Cellular and Biomolecular Research, University of Toronto, Toronto, Ontario M5S3E1, Canada.
| | - Felipe Olvera
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología - UNAM, Av. Universidad 2001, Cuernavaca, Morelos 62210, Mexico
| | - Arlene Calderón
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología - UNAM, Av. Universidad 2001, Cuernavaca, Morelos 62210, Mexico
| | - Melisa Benard-Valle
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología - UNAM, Av. Universidad 2001, Cuernavaca, Morelos 62210, Mexico
| | - Alejandro Alagón
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología - UNAM, Av. Universidad 2001, Cuernavaca, Morelos 62210, Mexico
| | - Gerardo Corzo
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnología - UNAM, Av. Universidad 2001, Cuernavaca, Morelos 62210, Mexico.
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Micrurus surinamensis Peruvian snake venom: Cytotoxic activity and purification of a C-type lectin protein (Ms-CTL) highly toxic to cardiomyoblast-derived H9c2 cells. Int J Biol Macromol 2020; 164:1908-1915. [PMID: 32781119 DOI: 10.1016/j.ijbiomac.2020.08.033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2020] [Revised: 08/03/2020] [Accepted: 08/04/2020] [Indexed: 11/20/2022]
Abstract
Micrurus surinamensis (Cuvier, 1817), popularly known as aquatic coral snake, has a broad geographic distribution in the Rainforest of South America. The purpose of this study was to investigate the cytotoxic effect caused by M. surinamensis venom in H9c2 cardiomyoblast cells and to identify protein components involved in cardiotoxic processes. Venom cardiotoxic potential is evidenced by cell viability reduction in a concentration-dependent manner. We have purified one of venom components responsible for this effect after three chromatographic steps: a cytotoxic 23.461 kDa protein, as determined by mass spectrometry. A 19-residue sequence (DCPSGWSSYEGSCYNFFQR) of the purified protein was deduced by MS/MS and exhibited high homology with N-terminal region of C-type lectin from snake venoms. This protein was named Ms-CTL. Morphologically, H9c2 incubation with Ms-CTL led to a significant cellular retraction and formation of cellular aggregates, as observed by microscopy phase-contrast images. Our results indicate that M. surinamensis venom is highly toxic to H9c2 cardiomyoblast cell and less or not cytotoxic to other cell lines, such as HaCat, VERO and U373. Results presented herein will help understanding the mechanisms that underlie cellular damage and tissue destruction, being useful in the development of alternative therapies against these coral snake bites.
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Dashevsky D, Bénard-Valle M, Neri-Castro E, Youngman NJ, Zdenek CN, Alagón A, Portes-Junior JA, Frank N, Fry BG. Anticoagulant Micrurus venoms: Targets and neutralization. Toxicol Lett 2020; 337:91-97. [PMID: 33197555 DOI: 10.1016/j.toxlet.2020.11.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2020] [Revised: 10/30/2020] [Accepted: 11/09/2020] [Indexed: 11/26/2022]
Abstract
Snakebite is a neglected tropical disease with a massive global burden of injury and death. The best current treatments, antivenoms, are plagued by a number of logistical issues that limit supply and access in remote or poor regions. We explore the anticoagulant properties of venoms from the genus Micrurus (coral snakes), which have been largely unstudied, as well as the effectiveness of antivenom and a small-molecule phospholipase inhibitor-varespladib-at counteracting these effects. Our in vitro results suggest that these venoms likely interfere with the formation or function of the prothrombinase complex. We find that the anticoagulant potency varies widely across the genus and is especially pronounced in M. laticollaris. This variation does not appear to correspond to previously described patterns regarding the relative expression of the three-finger toxin and phospholipase A2 (PLA2) toxin families within the venoms of this genus. The coral snake antivenom Coralmyn, is largely unable to ameliorate these effects except for M. ibiboboca. Varespladib on the other hand completely abolished the anticoagulant activity of every venom. This is consistent with the growing body of results showing that varespladib may be an effective treatment for a wide range of toxicity caused by PLA2 toxins from many different snake species. Varespladib is a particularly attractive candidate to help alleviate the burden of snakebite because it is an approved drug that possesses several logistical advantages over antivenom including temperature stability and oral availability.
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Affiliation(s)
- Daniel Dashevsky
- Toxin Evolution Lab, School of Biological Sciences, University of Queensland, St Lucia, QLD 4072 Australia; Australian National Insect Collection, Commonwealth Science and Industry Research Organization, Canberra, ACT 2601 Australia
| | - Melisa Bénard-Valle
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnologa, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca, Morelos, 62210, Mexico
| | - Edgar Neri-Castro
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnologa, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca, Morelos, 62210, Mexico
| | - Nicholas J Youngman
- Toxin Evolution Lab, School of Biological Sciences, University of Queensland, St Lucia, QLD 4072 Australia
| | - Christina N Zdenek
- Toxin Evolution Lab, School of Biological Sciences, University of Queensland, St Lucia, QLD 4072 Australia
| | - Alejandro Alagón
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnologa, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca, Morelos, 62210, Mexico
| | - José A Portes-Junior
- Laboratório de Coleções Zoológicas, Instituto Butantan, São Paulo 05503-900, Brazil
| | | | - Bryan G Fry
- Toxin Evolution Lab, School of Biological Sciences, University of Queensland, St Lucia, QLD 4072 Australia.
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Mora-Obando D, Salazar-Valenzuela D, Pla D, Lomonte B, Guerrero-Vargas JA, Ayerbe S, Gibbs HL, Calvete JJ. Venom variation in Bothrops asper lineages from North-Western South America. J Proteomics 2020; 229:103945. [DOI: 10.1016/j.jprot.2020.103945] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 08/09/2020] [Accepted: 08/13/2020] [Indexed: 01/09/2023]
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Cardiovascular activity of Micrurus lemniscatus lemniscatus (South American coralsnake) venom. Toxicon 2020; 186:58-66. [DOI: 10.1016/j.toxicon.2020.07.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Revised: 06/30/2020] [Accepted: 07/18/2020] [Indexed: 11/20/2022]
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45
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Rey-Suárez P, Lomonte B. Immunological cross-recognition and neutralization studies of Micrurus mipartitus and Micrurus dumerilii venoms by two therapeutic equine antivenoms. Biologicals 2020; 68:40-45. [PMID: 32928631 DOI: 10.1016/j.biologicals.2020.08.011] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2020] [Revised: 08/13/2020] [Accepted: 08/29/2020] [Indexed: 11/16/2022] Open
Abstract
New world Coral snakes comprise 82 species of medical importance distributed from southeastern United States to Argentina. In Colombia, Micrurus mipartitus and M. dumerilii are responsible for most coral snakebite accidents. Although infrequent, the severity of these envenomings, as well as the limited information available on the neutralizing coverage of commercially available antivenoms, underscores the need to perform studies to assess the cross-neutralizing ability of these life-saving immunobiologicals. In the present work, we evaluated the cross-recognition and neutralization ability of two equine therapeutic antivenoms: PROBIOL and SAC-ICP. PROBIOL antivenom showed cross-recognition towards both M. mipartitus and M. dumerilii venoms, with a significantly higher binding to the latter in both whole-venom ELISA and fractionated-venom immunoprofiling. In contrast, SAC-ICP antivenom cross-recognized M. dumerilii venom, but not that of M. mipartitus. Lethality of M. dumerilii venom was neutralized by both antivenoms, with a slightly higher potency for the SAC-ICP antivenom. However, the lethality of M. mipartitus venom was not neutralized by any of the two antivenoms. Results uncover the need to include M. mipartitus venom, or its most relevant toxins, in the production of coral snake antivenoms to be used in Colombia, to assure the neutralizing coverage for this species.
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Affiliation(s)
- Paola Rey-Suárez
- Programa de Ofidismo y Escorpionismo, Universidad de Antioquia, Medellín, Colombia.
| | - Bruno Lomonte
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
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Sasa M, Segura Cano SE. New insights into snakebite epidemiology in Costa Rica: A retrospective evaluation of medical records. Toxicon X 2020; 7:100055. [PMID: 32776004 PMCID: PMC7398977 DOI: 10.1016/j.toxcx.2020.100055] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 07/21/2020] [Accepted: 07/26/2020] [Indexed: 11/19/2022] Open
Abstract
Continuous monitoring of the snakebite envenoming allows elucidating factors that affect its incidence at spatial and temporal scales, and is a great tool to evaluate the proper management of snakebite in health centers. To determine if there have been changes over time in snakebite epidemiology in Costa Rica, we conducted a retrospective study using medical records from six hospitals for the years 2012-2013. A total of 475 snakebite patients were treated at the selected hospital during this period. Most bites occurred during the rainy season and primarily affected young men, mainly farm workers and schoolchildren. About 55% of bites occur in peri-domiciliary environments, although its prevalence varies geographically. Bothrops asper generates the vast majority of envenoming in the country, which is why the main local symptoms registered are edema, pain, and bleeding disorders. The time elapsed until treatment did not explain the degree of severity at admission. However, complications were observed more frequently in patients who took longer to receive treatment. The primary complications were bacterial infections, whereas kidney failure and compartment syndrome documented at very low frequencies. Only one death was recorded, reflecting the low fatality rate exhibited in the country. Hospital treatment included the rapid administration of antivenom and complementary treatment of antibiotics, analgesics, and antihistamines. The application of the latter as prophylactic does not seem to prevent the appearance of mild early adverse reactions, registered in 22.5% of the cases. Morbidity and mortality rates from snakebite have continued to decrease in the country, as a result of the efforts that Costa Rica has made to improve its public health system. Among those efforts, the creation of primary care centers (EBAIS) has reduced the time to treatment in many regions of the country. The Costa Rican experience of using antivenom in primary health care centers and maintaining good medical records could be considered for application in other countries where snakebite is a major health problem.
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Affiliation(s)
- Mahmood Sasa
- Instituto Clodomiro Picado, Universidad de Costa Rica, San José, Costa Rica
- Museo de Zoología, Escuela de Biología, Universidad de Costa Rica, San José, Costa Rica
| | - Sofía E. Segura Cano
- Departamento de Farmacología y Toxicología, Escuela de Medicina, Universidad de Costa Rica, San José, Costa Rica
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Bénard-Valle M, Neri-Castro E, Yañez-Mendoza MF, Lomonte B, Olvera A, Zamudio F, Restano-Cassulini R, Possani LD, Jiménez-Ferrer E, Alagón A. Functional, proteomic and transcriptomic characterization of the venom from Micrurus browni browni: Identification of the first lethal multimeric neurotoxin in coral snake venom. J Proteomics 2020; 225:103863. [DOI: 10.1016/j.jprot.2020.103863] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 05/18/2020] [Accepted: 06/04/2020] [Indexed: 10/24/2022]
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48
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Braga JRM, Jorge ARC, Marinho AD, Silveira JADM, Nogueira-Junior FA, Valle MB, Alagón A, de Menezes RRPPB, Martins AMC, Feijão LX, Monteiro HSA, Jorge RJB. Renal effects of venoms of Mexican coral snakes Micrurus browni and Micrurus laticollaris. Toxicon 2020; 181:45-52. [DOI: 10.1016/j.toxicon.2020.04.095] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 04/11/2020] [Accepted: 04/22/2020] [Indexed: 12/23/2022]
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49
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Bolívar-Barbosa JA, Rodríguez-Vargas AL. Actividad neurotóxica del veneno de serpientes del género Micrurus y métodos para su análisis. Revisión de la literatura. REVISTA DE LA FACULTAD DE MEDICINA 2020. [DOI: 10.15446/revfacmed.v68n3.75992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
Abstract
Introducción. Las serpientes del género Micrurus son animales de hábitos fosoriales, de temperamento pasivo y escasa producción de un potente veneno con características neurotóxicas que bloquean la transmisión sináptica en la placa neuromuscular.Objetivo. Presentar un panorama general de la neurotoxicidad del veneno de las serpientes Micrurus y su caracterización funcional mediante métodos de análisis ex vivo.Materiales y métodos. Se realizó una revisión de la literatura en MedLine y ScienceDirect usando términos específicos y sus combinaciones. Estrategia de búsqueda: tipo de estudios: artículos sobre la neurotoxicidad del veneno de serpientes Micrurus y técnicas para determinar su actividad neurotóxica mediante modelos in vitro, in vivo y ex vivo; periodo de publicación: sin limite inicial a junio de 2018; idiomas: inglés y español.Resultados. De los 88 estudios identificados en la búsqueda inicial, se excluyeron 28 por no cumplir los criterios de inclusión (basándose en la lectura de títulos y resúmenes); además, se incluyeron 8 documentos adicionales (libros e informes), que, a criterio de los autores, complementaban la información reportada por las referencias seleccionadas. Los estudios incluidos en la revisión (n=68) correspondieron a las siguientes tipologías: investigaciones originales (n=44), artículos de revisión (n=16) y capítulos de libros, informes, guías y consultas en internet (n=8).Conclusiones. Los estudios que describen el uso de preparaciones ex vivo de músculo y nervio para evaluar el efecto de neurotoxinas ofrecen un buen modelo para la caracterización del efecto presináptico y postsináptico del veneno producido por las serpientes Micrurus.
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Toxinological characterization of venom from Leptodeira annulata (Banded cat-eyed snake; Dipsadidae, Imantodini). Biochimie 2020; 174:171-188. [DOI: 10.1016/j.biochi.2020.04.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2019] [Revised: 03/27/2020] [Accepted: 04/06/2020] [Indexed: 02/08/2023]
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