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Bittenbinder MA, Bonanini F, Kurek D, Vulto P, Kool J, Vonk FJ. Using organ-on-a-chip technology to study haemorrhagic activities of snake venoms on endothelial tubules. Sci Rep 2024; 14:11157. [PMID: 38834598 DOI: 10.1038/s41598-024-60282-5] [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: 12/29/2023] [Accepted: 04/21/2024] [Indexed: 06/06/2024] Open
Abstract
Snakebite envenomation is a major public health issue which causes severe morbidity and mortality, affecting millions of people annually. Of a diverse range of clinical manifestations, local and systemic haemorrhage are of particular relevance, as this may result in ischemia, organ failure and even cardiovascular shock. Thus far, in vitro studies have failed to recapitulate the haemorrhagic effects observed in vivo. Here, we present an organ-on-a-chip approach to investigate the effects of four different snake venoms on a perfused microfluidic blood vessel model. We assess the effect of the venoms of four snake species on epithelial barrier function, cell viability, and contraction/delamination. Our findings reveal two different mechanisms by which the microvasculature is being affected, either by disruption of the endothelial cell membrane or by delamination of the endothelial cell monolayer from its matrix. The use of our blood vessel model may shed light on the key mechanisms by which tissue-damaging venoms exert their effects on the capillary vessels, which could be helpful for the development of effective treatments against snakebites.
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Affiliation(s)
- Mátyás A Bittenbinder
- Naturalis Biodiversity Center, 2333 CR, Leiden, The Netherlands
- AIMMS, Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081HV, Amsterdam, The Netherlands
| | | | | | | | - Jeroen Kool
- AIMMS, Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081HV, Amsterdam, The Netherlands.
| | - Freek J Vonk
- Naturalis Biodiversity Center, 2333 CR, Leiden, The Netherlands
- AIMMS, Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081HV, Amsterdam, The Netherlands
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2
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Santana HM, Ikenohuchi YJ, Silva MDS, Farias BJC, Serrath SN, Da Silva CP, Magalhães JGDS, Cruz LF, Cardozo DG, Ferreira E Ferreira A, Dos Reis VP, Diniz-Sousa R, Boeno CN, Paloschi MV, DE Lima AM, Soares AM, Setúbal SDS, Zuliani JP. BjussuMP-II, a venom metalloproteinase, induces the release and cleavage of pro-inflammatory cytokines and disrupts human umbilical vein endothelial cells. Chem Biol Interact 2024; 394:110986. [PMID: 38583853 DOI: 10.1016/j.cbi.2024.110986] [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: 02/21/2024] [Revised: 03/22/2024] [Accepted: 04/02/2024] [Indexed: 04/09/2024]
Abstract
Snake venom metalloproteases (SVMPs) are hydrolytic enzymes dependent on metal binding, primarily zinc (Zn2+), at their catalytic site. They are classified into three classes (P-I to P-III). BjussuMP-II, a P-I SVMP isolated from Bothrops jararacussu snake venom, has a molecular mass of 24 kDa. It exhibits inhibitory activity on platelet aggregation and hydrolyzes fibrinogen. TNF-α upregulates the expression of adhesion molecules on endothelial cell surfaces, promoting leukocyte adhesion and migration during inflammation. Literature indicates that SVMPs may cleave the TNF-α precursor, possibly due to significant homology between metalloproteases from mammalian extracellular matrix and SVMPs. This study aimed to investigate BjussuMP-II's effects on human umbilical vein endothelial cells (HUVEC), focusing on viability, detachment, adhesion, release, and cleavage of TNF-α, IL-1β, IL-6, IL-8, and IL-10. HUVEC were incubated with BjussuMP-II (1.5-50 μg/mL) for 3-24 h. Viability was determined using LDH release, MTT metabolization, and 7AAD for membrane integrity. Adhesion and detachment were assessed by incubating cells with BjussuMP-II and staining with Giemsa. Cytokines were quantified in HUVEC supernatants using EIA. TNF-α cleavage was evaluated using supernatants from PMA-stimulated cells or recombinant TNF-α. Results demonstrated BjussuMP-II's proteolytic activity on casein. It was not toxic to HUVEC at any concentration or duration studied but interfered with adhesion and promoted detachment. PMA induced TNF-α release by HUVEC, but this effect was not observed with BjussuMP-II, which cleaved TNF-α. Additionally, BjussuMP-II cleaved IL-1β, IL-6, and IL-10. These findings suggest that the zinc metalloprotease BjussuMP-II could be a valuable biotechnological tool for treating inflammatory disorders involving cytokine deregulation.
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Affiliation(s)
- Hallison Mota Santana
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Yoda Janaina Ikenohuchi
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Milena Daniela Souza Silva
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Braz Junior Campos Farias
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Suzanne Nery Serrath
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Carolina Pereira Da Silva
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | | | - Larissa Faustina Cruz
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Daniel Gomes Cardozo
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Alex Ferreira E Ferreira
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Valdison Pereira Dos Reis
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Rafaela Diniz-Sousa
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil; Laboratório de Biotecnologia de Proteínas e Compostos Bioativos Aplicados à Saúde, e Instituto Nacional de Ciência e Tecnologia Em Epidemiologia da Amazônia Ocidental, INCT-EPIAMO, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Charles Nunes Boeno
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Mauro Valentino Paloschi
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Anderson Maciel DE Lima
- Laboratório de Biotecnologia de Proteínas e Compostos Bioativos Aplicados à Saúde, e Instituto Nacional de Ciência e Tecnologia Em Epidemiologia da Amazônia Ocidental, INCT-EPIAMO, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Andreimar Martins Soares
- Laboratório de Biotecnologia de Proteínas e Compostos Bioativos Aplicados à Saúde, e Instituto Nacional de Ciência e Tecnologia Em Epidemiologia da Amazônia Ocidental, INCT-EPIAMO, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Sulamita da Silva Setúbal
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil.
| | - Juliana Pavan Zuliani
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil; Departamento de Medicina, Universidade Federal de Rondônia, UNIR, Porto Velho, RO, Brazil.
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Machado Marinho AC, Chapeaurouge A, Dutra BM, Quintela BCSF, Pereira SS, Fernandes CFC. The role of venom proteomics and single-domain antibodies for antivenoms: Progress in snake envenoming treatment. Drug Discov Today 2024; 29:103967. [PMID: 38555033 DOI: 10.1016/j.drudis.2024.103967] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 03/14/2024] [Accepted: 03/26/2024] [Indexed: 04/02/2024]
Abstract
Single-domain antibodies (sdAbs) hold promise for developing new biopharmaceuticals to treat neglected tropical diseases (NTDs), including snakebites, which are severe and occur frequently. In addition, limitations of conventional snakebite treatments, especially in terms of local action, and the global antivenom crisis incentivize the use of this biotechnological tool to design next-generation snakebite antivenoms. Conventional antivenoms for snakebite treatment are usually composed of immunoglobulin G or F(ab')2 fragments derived from the plasma of immunized animals. sdAbs, the smallest antigen-binding fragments, are derived from the variable domains of camelid heavy-chain antibodies. sdAbs may have some advantages over conventional antivenoms for local toxicity, such as better penetration into tissues due to their small size, and high solubility and affinity for venom antigens due to their unique antigen-binding loops and ability to access cryptic epitopes. We present an overview of current antivenom therapy in the context of sdAb development for toxin neutralization. Furthermore, strategies are presented for identifying snake venom's major toxins as well as for developing antisnake toxin sdAbs by employing proteomic tools for toxin neutralization.
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Affiliation(s)
- Anna Carolina Machado Marinho
- Laboratório Multiusuário de Pesquisa e Desenvolvimento, Fundação Oswaldo Cruz Ceará, FIOCRUZ CE, Eusébio-CE, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Ceará, UFC, Fortaleza, Brazil
| | - Alexander Chapeaurouge
- Laboratório Multiusuário de Pesquisa e Desenvolvimento, Fundação Oswaldo Cruz Ceará, FIOCRUZ CE, Eusébio-CE, Brazil
| | - Brunheld Maia Dutra
- Laboratório Multiusuário de Pesquisa e Desenvolvimento, Fundação Oswaldo Cruz Ceará, FIOCRUZ CE, Eusébio-CE, Brazil
| | - Barbara Cibelle S F Quintela
- Laboratório Multiusuário de Pesquisa e Desenvolvimento, Fundação Oswaldo Cruz Ceará, FIOCRUZ CE, Eusébio-CE, Brazil
| | - Soraya S Pereira
- Laboratório de Engenharia de Anticorpos, Fundação Oswaldo Cruz Rondônia, FIOCRUZ RO, Porto Velho-RO, Brazil
| | - Carla Freire C Fernandes
- Laboratório Multiusuário de Pesquisa e Desenvolvimento, Fundação Oswaldo Cruz Ceará, FIOCRUZ CE, Eusébio-CE, Brazil; Programa de Pós-Graduação em Ciências Farmacêuticas, Universidade Federal do Ceará, UFC, Fortaleza, Brazil
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4
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Oliveira VQ, Santos LC, Teixeira SC, Correia TML, Andrade LOSB, Gimenes SNC, Colombini M, Marques LM, Jiménez-Charris E, Freitas-de-Sousa LA, Silva MJB, Magalhães Gusmão ACMD, Ferro EAV, Clissa PB, Melo Rodrigues VD, Lopes DS. Antiangiogenic properties of BthMP, a P-I metalloproteinase from Bothrops moojeni snake venom by VEGF pathway in endothelial cells. Biochem Biophys Res Commun 2024; 706:149748. [PMID: 38460450 DOI: 10.1016/j.bbrc.2024.149748] [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: 11/21/2023] [Revised: 02/15/2024] [Accepted: 03/04/2024] [Indexed: 03/11/2024]
Abstract
Angiogenesis is a process that is controlled by a delicate combination of proangiogenic and antiangiogenic molecules and can be disrupted in various illnesses, including cancer. Non-cancerous diseases can also have an abnormal or insufficient vascular growth, inflammation and hypoxia, which exacerbate angiogenesis. These conditions include atherosclerosis, psoriasis, endometriosis, asthma, obesity and AIDS. Based on that, the present work assessed the in vitro and ex vivo antiangiogenic properties stemming from BthMP, a P-I metalloproteinase from Bothrops moojeni snake venom, via the VEGF pathway. BthMP at a concentration of 5 and 40 μg/mL showed no toxicity to endothelial cells (HUVEC) in the MTT assay and was not able to induce necrosis and colony proliferation. Interestingly, BthMP inhibited adhesion, migration and invasion of HUVECs in Matrigel and arrested in vitro angiogenesis by reducing the average number of nodules in toxin-treated cells by 9.6 and 17.32 at 5 and 40 μg/mL, respectively, and the number of tubules by 15.9 at 5 μg/mL and 21.6 at 40 μg/mL in a VEGF-dependent way, an essential proangiogenic property. Furthermore, BthMP inhibited the occurrence of the angiogenic process in an ex vivo aortic ring test by decreasing new vessel formation by 52% at 5 μg/mL and by 66% at 40 μg/mL and by increasing the expression of an antiangiogenic gene, SFLT-1, and decreasing the expression of the proangiogenic genes VEGFA and ANGPT-1. Finally, this toxin reduces the production of nitric oxide, a marker that promotes angiogenesis and VEGF modulation, and decreases the protein expression of VEGFA in the supernatant of the HUVEC culture by about 30 %. These results suggest that BthMP has a promising antiangiogenic property and proves to be a biotechnological mechanism for understanding the antiangiogenic responses induced by snake venom metalloproteinases, which could be applied to a variety of diseases that exhibit an imbalance of angiogenesis mechanisms.
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Affiliation(s)
- Vinícius Queiroz Oliveira
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil
| | - Luísa Carregosa Santos
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil
| | - Samuel Cota Teixeira
- Department of Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil.
| | | | | | | | - Mônica Colombini
- Laboratory of Immunopathology, Institute of Butantan, São Paulo, SP, Brazil
| | - Lucas Miranda Marques
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil
| | | | | | - Marcelo José Barbosa Silva
- Department of Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | | | - Eloisa Amália Vieira Ferro
- Department of Immunology, Institute of Biomedical Sciences, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | | | - Veridiana de Melo Rodrigues
- Laboratory of Biochemistry and Animal Toxins, Institute of Biotechnology, Federal University of Uberlandia (UFU), Uberlândia-MG, Brazil
| | - Daiana Silva Lopes
- Institute Multidisciplinary in Health, Federal University of Bahia (UFBA), Vitória da Conquista, BA, Brazil.
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Bittenbinder MA, van Thiel J, Cardoso FC, Casewell NR, Gutiérrez JM, Kool J, Vonk FJ. Tissue damaging toxins in snake venoms: mechanisms of action, pathophysiology and treatment strategies. Commun Biol 2024; 7:358. [PMID: 38519650 PMCID: PMC10960010 DOI: 10.1038/s42003-024-06019-6] [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: 08/25/2023] [Accepted: 03/07/2024] [Indexed: 03/25/2024] Open
Abstract
Snakebite envenoming is an important public health issue responsible for mortality and severe morbidity. Where mortality is mainly caused by venom toxins that induce cardiovascular disturbances, neurotoxicity, and acute kidney injury, morbidity is caused by toxins that directly or indirectly destroy cells and degrade the extracellular matrix. These are referred to as 'tissue-damaging toxins' and have previously been classified in various ways, most of which are based on the tissues being affected (e.g., cardiotoxins, myotoxins). This categorisation, however, is primarily phenomenological and not mechanistic. In this review, we propose an alternative way of classifying cytotoxins based on their mechanistic effects rather than using a description that is organ- or tissue-based. The mechanisms of toxin-induced tissue damage and their clinical implications are discussed. This review contributes to our understanding of fundamental biological processes associated with snakebite envenoming, which may pave the way for a knowledge-based search for novel therapeutic options.
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Affiliation(s)
- Mátyás A Bittenbinder
- Naturalis Biodiversity Center, 2333 CR, Leiden, The Netherlands
- AIMMS, Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081HV, Amsterdam, The Netherlands
- Centre for Analytical Sciences Amsterdam (CASA), 1098 XH, Amsterdam, The Netherlands
| | - Jory van Thiel
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, L3 5QA, Liverpool, United Kingdom
- Institute of Biology Leiden, Leiden University, Sylviusweg 72, 2333 BE, Leiden, The Netherlands
- Howard Hughes Medical Institute and Department of Biology, University of Maryland, College Park, MD, 20742, USA
| | - Fernanda C Cardoso
- Institute for Molecular Bioscience, The University of Queensland, St Lucia, Brisbane, Queensland, Australia
- Centre for Innovations in Peptide and Protein Science, The University of Queensland, St Lucia, Brisbane, Queensland, Australia
| | - Nicholas R Casewell
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, L3 5QA, Liverpool, United Kingdom
| | - José-María Gutiérrez
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, 11501, Costa Rica.
| | - Jeroen Kool
- AIMMS, Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081HV, Amsterdam, The Netherlands.
- Centre for Analytical Sciences Amsterdam (CASA), 1098 XH, Amsterdam, The Netherlands.
| | - Freek J Vonk
- Naturalis Biodiversity Center, 2333 CR, Leiden, The Netherlands
- AIMMS, Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Faculty of Sciences, Vrije Universiteit Amsterdam, De Boelelaan 1085, 1081HV, Amsterdam, The Netherlands
- Centre for Analytical Sciences Amsterdam (CASA), 1098 XH, Amsterdam, The Netherlands
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Nascimento TP, Gomes TA, Costa BJC, Carvalho E, Cunha AB, Pereira BL, Sartim MA, Murta FLG, Monteiro W, Sachett JDAG. Long-term hospital care needs after Bothrops atrox envenomation with hemorrhagic stroke in the Brazilian Amazon: 'From social to physical death' - A case report. Toxicon 2024; 241:107682. [PMID: 38460605 DOI: 10.1016/j.toxicon.2024.107682] [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: 01/02/2024] [Revised: 02/19/2024] [Accepted: 03/05/2024] [Indexed: 03/11/2024]
Abstract
Hemorrhagic stroke is a severe complication reported in cases of Bothrops atrox snakebite envenomation. We report an unusual case of a patient who evolved with an intracranial hemorrhagic stroke and was in a coma for more than five years in a tertiary hospital located in Manaus, Amazonas. 52-year-old man, carpenter, resident in the rural area of the municipality of Tabatinga, located 1106 km from Manaus, capital of Amazonas, Brazil, victim of an accident involving Bothrops atrox evolution with cardiorespiratory arrest, acute kidney injury and hemorrhagic stroke. After 43 days of hospitalization in the ICU, he was transferred to the ward, without contact with the environment and family, sent for home treatment, however, without acceptance by family members. During a long hospital stay for a period of 6 years, totally dependent on special care, in a flexed position, using a tracheostomy and mechanical ventilation, diagnosed and treated for hospital infections throughout his hospitalization, he died due to bacterial pneumonia. Losses of autonomy can result in an individual being completely disconnected from social life - a "social death before physical death".
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Affiliation(s)
- Thaís Pinto Nascimento
- School of Health Sciences, Amazonas State University, Manaus, Amazonas, Brazil; Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Amazonas, Brazil
| | - Talyson Aparicio Gomes
- School of Health Sciences, Amazonas State University, Manaus, Amazonas, Brazil; Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Amazonas, Brazil
| | - Bárbara Juliana Carvalho Costa
- School of Health Sciences, Amazonas State University, Manaus, Amazonas, Brazil; Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Amazonas, Brazil
| | - Erica Carvalho
- School of Health Sciences, Amazonas State University, Manaus, Amazonas, Brazil; Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Amazonas, Brazil
| | - Amanda Braga Cunha
- Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Amazonas, Brazil
| | - Bianca Leite Pereira
- Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Amazonas, Brazil
| | - Marco Aurélio Sartim
- Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Amazonas, Brazil; Research and Development Department, University Nilton Lins, Manaus, Amazonas, Brazil
| | - Felipe Leão Gomes Murta
- Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Amazonas, Brazil
| | - Wuelton Monteiro
- School of Health Sciences, Amazonas State University, Manaus, Amazonas, Brazil; Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Amazonas, Brazil
| | - Jacqueline de Almeida Gonçalves Sachett
- School of Health Sciences, Amazonas State University, Manaus, Amazonas, Brazil; Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Amazonas, Brazil.
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7
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Dingwoke EJ, Adamude FA, Salihu A, Abubakar MS, Sallau AB. Toxicological analyses of the venoms of Nigerian vipers Echis ocellatus and Bitis arietans. Trop Med Health 2024; 52:15. [PMID: 38282015 PMCID: PMC10823708 DOI: 10.1186/s41182-024-00581-9] [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: 11/30/2023] [Accepted: 01/16/2024] [Indexed: 01/30/2024] Open
Abstract
BACKGROUND Among the medically important snakes in Nigeria, Echis ocellatus and Bitis arietans have the most lethal venom. These venoms were classified according to the presence of snake venom metalloproteinases (SVMPs), snake venom phospholipase A2 (PLA2s), and snake venom serine proteases (SVSPs). Toxicological analyzes were performed to understand the significance of different protein families in venoms. METHODS Proteins were separated from venom using column chromatography. The skin and footpad of mice were used to determine hemorrhagic and edematogenic activities. Caprine blood plasma was used to test fibrinolytic activity in vitro. RESULTS The results showed that, compared to the crude venom, the SVMP fraction induced hemorrhagic effects with a diameter of 26.00 ± 1.00 mm in E. ocellatus and 21.33 ± 1.52 mm in B. arietans. Both SVSP and SVMP had anticoagulant effects; however, the SVSP fraction had a stronger effect, with a longer anticoagulation time of 30.00 ± 3.00 min in E. ocellatus and 26.00 ± 2.00 min in B. arietans. These main venom toxins, SVMPs, SVSPs, and PLA2, were found to have edema-forming effects that were optimal at 2 h after envenomation. PLA2s had the highest edema-inducing activity, with onset 30 min after envenomation. CONCLUSIONS Given the importance of SVMPs in altering the integrity of the membrane structure and impairing the blood coagulation system, an antivenom that can specifically neutralize its activity could inhibit the hemorrhage effects of the venoms.
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Affiliation(s)
- Emeka John Dingwoke
- Department of Tropical Diseases, UNESCO-International Center for Biotechnology, University of Nigeria, Nsukka, Enugu State, Nigeria.
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria.
- Venom, Antivenom and Natural Toxins Research Centre, Ahmadu Bello University, Zaria, Kaduna State, Nigeria.
| | - Fatima Adis Adamude
- Department of Biochemistry, Faculty of Sciences, Federal University, Lafia, Nasarawa State, Nigeria
- Venom, Antivenom and Natural Toxins Research Centre, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - Aliyu Salihu
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - Mujitaba Suleiman Abubakar
- Department of Pharmacognosy and Drug Development, Faculty of Pharmaceutical Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
- Venom, Antivenom and Natural Toxins Research Centre, Ahmadu Bello University, Zaria, Kaduna State, Nigeria
| | - Abdullahi Balarabe Sallau
- Department of Biochemistry, Faculty of Life Sciences, Ahmadu Bello University, Zaria, Kaduna State, Nigeria.
- Venom, Antivenom and Natural Toxins Research Centre, Ahmadu Bello University, Zaria, Kaduna State, Nigeria.
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Cavecci-Mendonça B, Luciano KM, Vaccas T, de Oliveira LA, Clemente EF, Rossini BC, Vieira JCS, de Barros LC, Biondi I, de Magalhães Padilha P, dos Santos LD. Preliminary Insights of Brazilian Snake Venom Metalloproteomics. Toxins (Basel) 2023; 15:648. [PMID: 37999511 PMCID: PMC10675094 DOI: 10.3390/toxins15110648] [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: 09/11/2023] [Revised: 10/10/2023] [Accepted: 10/23/2023] [Indexed: 11/25/2023] Open
Abstract
Snakebite envenoming is one of the most significantly neglected tropical diseases in the world. The lack of diagnosis/prognosis methods for snakebite is one of our motivations to develop innovative technological solutions for Brazilian health. The objective of this work was to evaluate the protein and metallic ion composition of Crotalus durissus terrificus, Bothrops jararaca, B. alternatus, B. jararacussu, B. moojeni, B. pauloensis, and Lachesis muta muta snake venoms. Brazilian snake venoms were subjected to the shotgun proteomic approach using mass spectrometry, and metal ion analysis was performed by atomic spectrometry. Shotgun proteomics has shown three abundant toxin classes (PLA2, serine proteases, and metalloproteinases) in all snake venoms, and metallic ions analysis has evidenced that the Cu2+ ion is present exclusively in the L. m. muta venom; Ca2+ and Mg2+ ions have shown a statistical difference between the species of Bothrops and Crotalus genus, whereas the Zn2+ ion presented a statistical difference among all species studied in this work. In addition, Mg2+ ions have shown 42 times more in the C. d. terrificus venom when compared to the average concentration in the other genera. Though metal ions are a minor fraction of snake venoms, several venom toxins depend on them. We believe that these non-protein fractions are capable of assisting in the development of unprecedented diagnostic devices for Brazilian snakebites.
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Affiliation(s)
- Bruna Cavecci-Mendonça
- Biotechnology Institute (IBTEC), São Paulo State University (UNESP), Botucatu 18607-440, SP, Brazil; (B.C.-M.); (B.C.R.)
- Graduate Program in Tropical Diseases, Botucatu Medical School (FMB), São Paulo State University (UNESP), Botucatu 18618-687, SP, Brazil; (T.V.); (L.A.d.O.)
- Triad for Life Ltda, Prospecta–Botucatu Technological Incubator, Botucatu 18610-034, SP, Brazil
| | - Karen Monique Luciano
- Center of Studies of Venoms and Animals Venomous (CEVAP), São Paulo State University (UNESP), Botucatu 18619-002, SP, Brazil; (K.M.L.); (L.C.d.B.)
| | - Tauane Vaccas
- Graduate Program in Tropical Diseases, Botucatu Medical School (FMB), São Paulo State University (UNESP), Botucatu 18618-687, SP, Brazil; (T.V.); (L.A.d.O.)
| | - Laudicéia Alves de Oliveira
- Graduate Program in Tropical Diseases, Botucatu Medical School (FMB), São Paulo State University (UNESP), Botucatu 18618-687, SP, Brazil; (T.V.); (L.A.d.O.)
| | - Eloisa Fornaro Clemente
- Graduate Program in Research and Development (Medical Biotechnology), Botucatu Medical School (FMB), São Paulo State University (UNESP), Botucatu 18618-687, SP, Brazil;
| | - Bruno Cesar Rossini
- Biotechnology Institute (IBTEC), São Paulo State University (UNESP), Botucatu 18607-440, SP, Brazil; (B.C.-M.); (B.C.R.)
- Department of Chemical and Biological Sciences, Institute of Biosciences (IBB), São Paulo State University (UNESP), Botucatu 18618-689, SP, Brazil; (J.C.S.V.); (P.d.M.P.)
| | - José Cavalcante Souza Vieira
- Department of Chemical and Biological Sciences, Institute of Biosciences (IBB), São Paulo State University (UNESP), Botucatu 18618-689, SP, Brazil; (J.C.S.V.); (P.d.M.P.)
| | - Luciana Curtolo de Barros
- Center of Studies of Venoms and Animals Venomous (CEVAP), São Paulo State University (UNESP), Botucatu 18619-002, SP, Brazil; (K.M.L.); (L.C.d.B.)
| | - Ilka Biondi
- Laboratory of Venomous Animals and Herpetology, State University of Feira de Santana (UEFS), Feira de Santana 44036-900, BA, Brazil;
| | - Pedro de Magalhães Padilha
- Department of Chemical and Biological Sciences, Institute of Biosciences (IBB), São Paulo State University (UNESP), Botucatu 18618-689, SP, Brazil; (J.C.S.V.); (P.d.M.P.)
| | - Lucilene Delazari dos Santos
- Biotechnology Institute (IBTEC), São Paulo State University (UNESP), Botucatu 18607-440, SP, Brazil; (B.C.-M.); (B.C.R.)
- Graduate Program in Tropical Diseases, Botucatu Medical School (FMB), São Paulo State University (UNESP), Botucatu 18618-687, SP, Brazil; (T.V.); (L.A.d.O.)
- Graduate Program in Research and Development (Medical Biotechnology), Botucatu Medical School (FMB), São Paulo State University (UNESP), Botucatu 18618-687, SP, Brazil;
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de Araújo CN, Santiago PB, Causin Vieira G, Silva GDS, Moura RP, Bastos IMD, de Santana JM. The biotechnological potential of proteases from hematophagous arthropod vectors. Front Cell Infect Microbiol 2023; 13:1287492. [PMID: 37965257 PMCID: PMC10641018 DOI: 10.3389/fcimb.2023.1287492] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Accepted: 10/09/2023] [Indexed: 11/16/2023] Open
Affiliation(s)
- Carla Nunes de Araújo
- Host-Pathogen Interface Laboratory, Department of Cell Biology, Institute of Biology, University of Brasília, Brasília, DF, Brazil
- Faculty of Ceilândia, University of Brasília, Brasília, DF, Brazil
| | - Paula Beatriz Santiago
- Host-Pathogen Interface Laboratory, Department of Cell Biology, Institute of Biology, University of Brasília, Brasília, DF, Brazil
| | - Giulia Causin Vieira
- Host-Pathogen Interface Laboratory, Department of Cell Biology, Institute of Biology, University of Brasília, Brasília, DF, Brazil
| | - Gabriel dos Santos Silva
- Host-Pathogen Interface Laboratory, Department of Cell Biology, Institute of Biology, University of Brasília, Brasília, DF, Brazil
| | - Renan Pereira Moura
- Host-Pathogen Interface Laboratory, Department of Cell Biology, Institute of Biology, University of Brasília, Brasília, DF, Brazil
| | - Izabela Marques Dourado Bastos
- Host-Pathogen Interface Laboratory, Department of Cell Biology, Institute of Biology, University of Brasília, Brasília, DF, Brazil
| | - Jaime Martins de Santana
- Host-Pathogen Interface Laboratory, Department of Cell Biology, Institute of Biology, University of Brasília, Brasília, DF, Brazil
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10
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Ajisebiola BS, Oladele JO, Adeyi AO. Kaempferol from Moringa oleifera demonstrated potent antivenom activities via inhibition of metalloproteinase and attenuation of Bitis arietans venom-induced toxicities. Toxicon 2023; 233:107242. [PMID: 37558138 DOI: 10.1016/j.toxicon.2023.107242] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Revised: 07/27/2023] [Accepted: 08/02/2023] [Indexed: 08/11/2023]
Abstract
Bitis arietans venom (BAV) can induce severe pathophysiological disorders after envenoming. However, studies have shown that the Moringa oleifera fraction is effective against BAV toxicities and contains bioactive compounds with significant antivenom potency. This research aimed to identify the main active antivenom compound in the M. oleifera fraction responsible for neutralizing the toxicities induced by BAV. The compounds identified from M. oleifera fraction were docked in silico against the catalytic site of the Snake Venom Metalloproteinase (SVMP) to determine the lead inhibitor compound. The antivenom potency of the lead inhibitor compound was tested against BAV toxicities and metalloproteinase isolated from BAV using in vitro and in vivo methods, while EchiTab-Plus polyvalent antivenom served as a standard drug. The in silico prediction revealed kaempferol as the lead inhibitor compound with a docking score of -7.0 kcal/mol. Kaempferol effectively inhibited metalloproteinase activity at 0.2 mg/ml, compared to antivenom (0.4 mg/ml) and demonstrated significant antihaemorrhagic, antihaemolytic and coagulant effects against BAV activities. Furthermore, kaempferol showed a significant dose-dependent effect on altered haematological indices observed in rats challenged with LD50 of BAV. Envenomed rats also showed an increase in oxidative stress biomarkers and antioxidant enzyme activity in the heart and kidney. However, treatment with kaempferol significantly (P < 0.05) decreased malondialdehyde levels and SOD activity with concomitant enhancement of glutathione levels. Severe histopathological defects noticed in the organ tissues of envenomed rats were ameliorated after kaempferol treatment. Kaempferol is identified as the main active antivenom compound in M. oleifera, and this research highlights the potential of the compound as an effective alternative to snakebite treatment.
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Affiliation(s)
- Babafemi Siji Ajisebiola
- Department of Zoology, Osun State University, Osogbo, Nigeria; Animal Physiology Unit, Department of Zoology, University of Ibadan, Ibadan, Nigeria.
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11
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Tioyama EC, Bayona-Serrano JD, Portes-Junior JA, Nachtigall PG, de Souza VC, Beraldo-Neto E, Grazziotin FG, Junqueira-de-Azevedo ILM, Moura-da-Silva AM, Freitas-de-Sousa LA. The Venom Composition of the Snake Tribe Philodryadini: 'Omic' Techniques Reveal Intergeneric Variability among South American Racers. Toxins (Basel) 2023; 15:415. [PMID: 37505684 PMCID: PMC10467154 DOI: 10.3390/toxins15070415] [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: 05/15/2023] [Revised: 05/31/2023] [Accepted: 06/03/2023] [Indexed: 07/29/2023] Open
Abstract
Snakes of the Philodryadini tribe are included in the Dipsadidae family, which is a diverse group of rear-fanged snakes widespread in different ecological conditions, including habitats and diet. However, little is known about the composition and effects of their venoms despite their relevance for understanding the evolution of these snakes or even their impact on the occasional cases of human envenoming. In this study, we integrated venom gland transcriptomics, venom proteomics and functional assays to characterize the venoms from eight species of the Philodryadini tribe, which includes the genus Philodryas, Chlorosoma and Xenoxybelis. The most abundant components identified in the venoms were snake venom metalloproteinases (SVMPs), cysteine-rich secretory proteins (CRISPs), C-type lectins (CTLs), snake endogenous matrix metalloproteinases type 9 (seMMP-9) and snake venom serinoproteinases (SVSPs). These protein families showed a variable expression profile in each genus. SVMPs were the most abundant components in Philodryas, while seMMP-9 and CRISPs were the most expressed in Chlorosoma and Xenoxybelis, respectively. Lineage-specific differences in venom composition were also observed among Philodryas species, whereas P. olfersii presented the highest amount of SVSPs and P. agassizii was the only species to express significant amounts of 3FTx. The variability observed in venom composition was confirmed by the venom functional assays. Philodryas species presented the highest SVMP activity, whereas Chlorosoma species showed higher levels of gelatin activity, which may correlate to the seMMP-9 enzymes. The variability observed in the composition of these venoms may be related to the tribe phylogeny and influenced by their diets. In the presented study, we expanded the set of venomics studies of the Philodryadini tribe, which paves new roads for further studies on the evolution and ecology of Dipsadidae snakes.
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Affiliation(s)
- Emilly Campos Tioyama
- Programa de Pós-Graduação em Ciências-Toxinologia, Escola Superior do Instituto Butantan, São Paulo 05508-210, Brazil; (E.C.T.); (J.D.B.-S.)
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo 05503-900, Brazil; (J.A.P.-J.); (A.M.M.-d.-S.)
| | - Juan David Bayona-Serrano
- Programa de Pós-Graduação em Ciências-Toxinologia, Escola Superior do Instituto Butantan, São Paulo 05508-210, Brazil; (E.C.T.); (J.D.B.-S.)
- Laboratório de Toxinologia Aplicada, Instituto Butantan, São Paulo 05503-900, Brazil; (P.G.N.); (V.C.d.S.); (I.L.M.J.-d.-A.)
| | - José A. Portes-Junior
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo 05503-900, Brazil; (J.A.P.-J.); (A.M.M.-d.-S.)
| | - Pedro Gabriel Nachtigall
- Laboratório de Toxinologia Aplicada, Instituto Butantan, São Paulo 05503-900, Brazil; (P.G.N.); (V.C.d.S.); (I.L.M.J.-d.-A.)
| | - Vinicius Carius de Souza
- Laboratório de Toxinologia Aplicada, Instituto Butantan, São Paulo 05503-900, Brazil; (P.G.N.); (V.C.d.S.); (I.L.M.J.-d.-A.)
| | - Emidio Beraldo-Neto
- Laboratório de Bioquímica e Biofísica, Instituto Butantan, São Paulo 05503-900, Brazil;
| | | | | | - Ana Maria Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo 05503-900, Brazil; (J.A.P.-J.); (A.M.M.-d.-S.)
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12
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Khourcha S, Hilal I, Elbejjaj I, Karkouri M, Safi A, Hmyene A, Oukkache N. Insight into the Toxicological and Pathophysiological Effects of Moroccan Vipers' Venom: Assessing the Efficacy of Commercial Antivenom for Neutralization. Trop Med Infect Dis 2023; 8:302. [PMID: 37368720 DOI: 10.3390/tropicalmed8060302] [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: 04/28/2023] [Revised: 05/24/2023] [Accepted: 05/30/2023] [Indexed: 06/29/2023] Open
Abstract
Morocco is one of the richest countries in biodiversity in the Mediterranean region, especially in its ophidian fauna. In total, there are eight species of venomous snakes, with seven belonging to the Viperidae family, responsible for 67.2% of severe envenomation cases in the country. Cerastes cerastes, Daboia mauritanica and Bitis arietans are considered among the most venomous vipers whose bites cause high levels of morbidity, disability or mortality. Despite their wide distribution in the kingdom, the incidence of these snakebites remains poorly understood and largely underestimated. Moreover, intraspecific variations in the venom composition significantly affect the effectiveness of antivenoms. Due to the unavailability of locally produced antivenoms, we evaluated the efficacy of Inoserp-MENA, the only available antivenom in Morocco, against C. cerastes, D. mauritanica and B. arietans. First, we conducted a comprehensive characterization of these venoms, including an LD50 test to examine their toxicity and SDS-PAGE as a technique to analyze the enzymes responsible for biological activities, such as hemorrhagic and edematous activities and myotoxicity, which generate physiopathological effects in the skin, paws and muscles of envenomed mice. Then, we assessed the ability of Inoserp-MENA antivenom to neutralize the toxic activities of Moroccan vipers. Our results indicate that the venom of C. cerastes, D. mauritanica and B. arietans are toxic, causing severe alterations such as edema, myotoxicity, myonecrosis and significant hemorrhages with the formation of hemorrhagic foci. C. cerastes venom is more dangerous in terms of lethality and hemorrhages, while B. arietans venom is more edematous. The effects of C. cerastes venom were effectively neutralized, but Inoserp-MENA antivenom failed to protect mice against the toxic effects induced by B. arietans and D. mauritanica venom. The study reveals alarming shortcomings in the effectiveness of the current commercially available antivenom's dosage and neutralization capabilities, highlighting the urgent need to develop a region-specific viper envenomation therapy.
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Affiliation(s)
- Soukaina Khourcha
- Laboratory of Venoms and Toxins, Pasteur Institute of Morocco, Casablanca 20360, Morocco
- Laboratory of Biochemistry, Environment and Food Technology, Faculty of Sciences and Technologies of Mohammedia, Mohammedia 20650, Morocco
| | - Ines Hilal
- Laboratory of Venoms and Toxins, Pasteur Institute of Morocco, Casablanca 20360, Morocco
- Laboratory of Biochemistry, Environment and Food Technology, Faculty of Sciences and Technologies of Mohammedia, Mohammedia 20650, Morocco
| | - Iatimad Elbejjaj
- Laboratory of Pathological Anatomy, University Hospital Center Ibn Rochd, Casablanca 20360, Morocco
| | - Mehdi Karkouri
- Laboratory of Pathological Anatomy, University Hospital Center Ibn Rochd, Casablanca 20360, Morocco
| | - Amal Safi
- Laboratory of Biochemistry, Environment and Food Technology, Faculty of Sciences and Technologies of Mohammedia, Mohammedia 20650, Morocco
| | - Abdelaziz Hmyene
- Laboratory of Biochemistry, Environment and Food Technology, Faculty of Sciences and Technologies of Mohammedia, Mohammedia 20650, Morocco
| | - Naoual Oukkache
- Laboratory of Venoms and Toxins, Pasteur Institute of Morocco, Casablanca 20360, Morocco
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Bittenbinder MA, Bergkamp ND, Slagboom J, Bebelman JPM, Casewell NR, Siderius MH, Smit MJ, Kool J, Vonk FJ. Monitoring Snake Venom-Induced Extracellular Matrix Degradation and Identifying Proteolytically Active Venom Toxins Using Fluorescently Labeled Substrates. BIOLOGY 2023; 12:765. [PMID: 37372050 DOI: 10.3390/biology12060765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Revised: 05/05/2023] [Accepted: 05/16/2023] [Indexed: 06/29/2023]
Abstract
Snakebite envenoming is an important public health issue with devastating consequences and annual mortality rates that range between 81,000 and 138,000. Snake venoms may cause a range of pathophysiological effects affecting the nervous system and the cardiovascular system. Moreover, snake venom may have tissue-damaging activities that result in lifelong morbidities such as amputations, muscle degeneration, and organ malfunctioning. The tissue-damaging components in snake venoms comprise multiple toxin classes with various molecular targets including cellular membranes and the extracellular matrix (ECM). In this study, we present multiple assay formats that enable investigation of snake venom-induced ECM degradation using a variety of (dye-quenched) fluorescently labeled ECM components. Using a combinatorial approach, we were able to characterise different proteolytic profiles for different medically relevant snake venoms, followed by identification of the responsible components within the snake venoms. This workflow could provide valuable insights into the key mechanisms by which proteolytic venom components exert their effects and could therefore prove useful for the development of effective snakebite treatments against this severe pathology.
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Affiliation(s)
- Mátyás A Bittenbinder
- Naturalis Biodiversity Center, 2333 CR Leiden, The Netherlands
- Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Faculty of Sciences, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
- Centre for Analytical Sciences Amsterdam (CASA), 1081 HZ Amsterdam, The Netherlands
| | - Nick D Bergkamp
- Division of Medicinal Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Julien Slagboom
- Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Faculty of Sciences, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
- Centre for Analytical Sciences Amsterdam (CASA), 1081 HZ Amsterdam, The Netherlands
| | - Jan Paul M Bebelman
- Division of Medicinal Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Nicholas R Casewell
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool L3 5QA, UK
| | - Marco H Siderius
- Division of Medicinal Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Martine J Smit
- Division of Medicinal Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
| | - Jeroen Kool
- Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Faculty of Sciences, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
- Centre for Analytical Sciences Amsterdam (CASA), 1081 HZ Amsterdam, The Netherlands
| | - Freek J Vonk
- Naturalis Biodiversity Center, 2333 CR Leiden, The Netherlands
- Division of BioAnalytical Chemistry, Department of Chemistry and Pharmaceutical Sciences, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Faculty of Sciences, Vrije Universiteit Amsterdam, 1081 HZ Amsterdam, The Netherlands
- Centre for Analytical Sciences Amsterdam (CASA), 1081 HZ Amsterdam, The Netherlands
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14
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Figueiredo RG, Guerreiro MLDS, Azevedo E, de Moura MS, Trindade SC, de Bessa J, Biondi I. Pathophysiological and Clinical Significance of Crotalus durissus cascavella Venom-Induced Pulmonary Impairment in a Murine Model. Toxins (Basel) 2023; 15:282. [PMID: 37104220 PMCID: PMC10141213 DOI: 10.3390/toxins15040282] [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: 02/21/2023] [Revised: 03/26/2023] [Accepted: 04/04/2023] [Indexed: 04/28/2023] Open
Abstract
Crotalus venom has broad biological activity, including neurotoxic, myotoxic, hematologic, and cytotoxic compounds that induce severe systemic repercussions. We evaluated the pathophysiological and clinical significance of Crotalus durissus cascavella (Cdc) venom-induced pulmonary impairment in mice. We conducted a randomized experimental study, involving 72 animals intraperitoneally inoculated with saline solution in the control group (CG), as well as venom in the experimental group (EG). The animals were euthanized at predetermined intervals (1 h, 3 h, 6 h, 12 h, 24 h, and 48 h), and lung fragments were collected for H&E and Masson histological analysis. The CG did not present inflammatory alterations in pulmonary parenchyma. In the EG, interstitial and alveolar swelling, necrosis, septal losses followed by alveolar distensions, and areas of atelectasis in the pulmonary parenchyma were observed after three hours. The EG morphometric analysis presented pulmonary inflammatory infiltrates at all time intervals, being more significant at three and six (p = 0.035) and six and 12 h (p = 0.006). The necrosis zones were significant at intervals of one and 24 h (p = 0.001), one and 48 h (p = 0.001), and three and 48 h (p = 0.035). Crotalus durissus cascavella venom induces a diffuse, heterogeneous, and acute inflammatory injury in the pulmonary parenchyma, with potential clinical implications for respiratory mechanics and gas exchange. The early recognition and prompt treatment of this condition are essential to prevent further lung injury and to improve outcomes.
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Affiliation(s)
- Ricardo G. Figueiredo
- Programa de Pós-Graduação em Saúde Coletiva, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana 44036-900, Brazil
- Departamento de Saúde, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana 44036-900, Brazil
| | - Marcos Lázaro da Silva Guerreiro
- Laboratório de Animais Peçonhentos e Herpetologia (LAPH), Departamento de Biologia, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana 44036-900, Brazil
| | - Elen Azevedo
- Laboratório de Animais Peçonhentos e Herpetologia (LAPH), Departamento de Biologia, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana 44036-900, Brazil
| | - Mateus Souza de Moura
- Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana 44036-900, Brazil
| | - Soraya Castro Trindade
- Departamento de Saúde, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana 44036-900, Brazil
| | - José de Bessa
- Programa de Pós-Graduação em Saúde Coletiva, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana 44036-900, Brazil
- Departamento de Saúde, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana 44036-900, Brazil
| | - Ilka Biondi
- Laboratório de Animais Peçonhentos e Herpetologia (LAPH), Departamento de Biologia, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana 44036-900, Brazil
- Departamento de Ciências Biológicas, Universidade Estadual de Feira de Santana (UEFS), Feira de Santana 44036-900, Brazil
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15
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Comparative venom toxin analyses of Nigerian viperidae and elapidae snakes. SCIENTIFIC AFRICAN 2023. [DOI: 10.1016/j.sciaf.2023.e01622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2023] Open
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16
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Osipov A, Utkin Y. What Are the Neurotoxins in Hemotoxic Snake Venoms? Int J Mol Sci 2023; 24:ijms24032919. [PMID: 36769242 PMCID: PMC9917609 DOI: 10.3390/ijms24032919] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Revised: 01/10/2023] [Accepted: 01/30/2023] [Indexed: 02/05/2023] Open
Abstract
Snake venoms as tools for hunting are primarily aimed at the most vital systems of the prey, especially the nervous and circulatory systems. In general, snakes of the Elapidae family produce neurotoxic venoms comprising of toxins targeting the nervous system, while snakes of the Viperidae family and most rear-fanged snakes produce hemotoxic venoms directed mainly on blood coagulation. However, it is not all so clear. Some bites by viperids results in neurotoxic signs and it is now known that hemotoxic venoms do contain neurotoxic components. For example, viperid phospholipases A2 may manifest pre- or/and postsynaptic activity and be involved in pain and analgesia. There are other neurotoxins belonging to diverse families ranging from large multi-subunit proteins (e.g., C-type lectin-like proteins) to short peptide neurotoxins (e.g., waglerins and azemiopsin), which are found in hemotoxic venoms. Other neurotoxins from hemotoxic venoms include baptides, crotamine, cysteine-rich secretory proteins, Kunitz-type protease inhibitors, sarafotoxins and three-finger toxins. Some of these toxins exhibit postsynaptic activity, while others affect the functioning of voltage-dependent ion channels. This review represents the first attempt to systematize data on the neurotoxins from "non-neurotoxic" snake venom. The structural and functional characteristic of these neurotoxins affecting diverse targets in the nervous system are considered.
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Sialic acid-containing glycans play a role in the activity of snake venom proteases. Biochimie 2023; 204:140-153. [PMID: 36210615 DOI: 10.1016/j.biochi.2022.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Revised: 08/31/2022] [Accepted: 09/14/2022] [Indexed: 01/12/2023]
Abstract
Structural variability is a feature of snake venom proteins, and glycosylation is a post-translational modification that contributes to the diversification of venom proteomes. Studies by our group have shown that Bothrops venoms are distinctly defined by their glycoprotein content, and that most hybrid/complex N-glycans identified in these venoms contain sialic acid. Considering that metalloproteases and serine proteases are abundant components of Bothrops venoms and essential in the envenomation process, and that these enzymes contain several glycosylation sites, the role of sialic acid in venom proteolytic activity was evaluated. Here we show that removal of sialic acid by treatment of nine Bothrops venoms with neuraminidase (i) altered the pattern of gelatinolysis in zymography of most venoms and reduced the gelatinolytic activity of all venoms, (ii) decreased the proteolytic activity of some venoms on fibrinogen and the clotting activity of human plasma of all venoms, and (iii) altered the proteolysis profile of plasma proteins by B. jararaca venom, suggesting that sialic acid may play a role in the interaction of proteases with their protein substrates. In contrast, the profile of venom amidolytic activity on Bz-Arg-pNA did not change after removal of sialic acid, indicating that this monosaccharide is not essential in N-glycans of serine proteases acting on small substrates. In summary, these results expand the knowledge about the variability of the subproteomes of Bothrops venom proteases, and for the first time point to the importance of carbohydrate chains containing sialic acid in the enzymatic activities of venom proteases relevant in human envenomation.
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18
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Biological and Medical Aspects Related to South American Rattlesnake Crotalus durissus (Linnaeus, 1758): A View from Colombia. Toxins (Basel) 2022; 14:toxins14120875. [PMID: 36548772 PMCID: PMC9784998 DOI: 10.3390/toxins14120875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Revised: 11/25/2022] [Accepted: 12/03/2022] [Indexed: 12/16/2022] Open
Abstract
In Colombia, South America, there is a subspecies of the South American rattlesnake Crotalus durissus, C. d. cumanensis, a snake of the Viperidae family, whose presence has been reduced due to the destruction of its habitat. It is an enigmatic snake from the group of pit vipers, venomous, with large articulated front fangs, special designs on its body, and a characteristic rattle on its tail. Unlike in Brazil, the occurrence of human envenomation by C. durisus in Colombia is very rare and contributes to less than 1% of envenomation caused by snakes. Its venom is a complex cocktail of proteins with different biological effects, which evolved with the purpose of paralyzing the prey, killing it, and starting its digestive process, as well as having defense functions. When its venom is injected into humans as the result of a bite, the victim presents with both local tissue damage and with systemic involvement, including a diverse degree of neurotoxic, myotoxic, nephrotoxic, and coagulopathic effects, among others. Its biological effects are being studied for use in human health, including the possible development of analgesic, muscle relaxant, anti-inflammatory, immunosuppressive, anti-infection, and antineoplastic drugs. Several groups of researchers in Brazil are very active in their contributions in this regard. In this work, a review is made of the most relevant biological and medical aspects related to the South American rattlesnake and of what may be of importance for a better understanding of the snake C. d. cumanensis, present in Colombia and Venezuela.
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Mora-Obando D, Lomonte B, Pla D, Guerrero-Vargas JA, Ayerbe-González S, Gutiérrez JM, Sasa M, Calvete JJ. Half a century of research on Bothrops asper venom variation: Biological and biomedical implications. Toxicon 2022; 221:106983. [DOI: 10.1016/j.toxicon.2022.106983] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 11/21/2022] [Accepted: 11/22/2022] [Indexed: 11/24/2022]
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Bibliometric Analysis of Literature in Snake Venom-Related Research Worldwide (1933–2022). Animals (Basel) 2022; 12:ani12162058. [PMID: 36009648 PMCID: PMC9405337 DOI: 10.3390/ani12162058] [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: 07/06/2022] [Revised: 08/03/2022] [Accepted: 08/09/2022] [Indexed: 11/29/2022] Open
Abstract
Simple Summary Around the world, snake envenomation poses a serious health risk. Proteins with pharmacological effects are present in snake venom. Recent studies elaborate snake venom and its potential application, including as a cancer drug and antibacterial substances. Our study aimed to analyze the global profile of the literature in snake venom research from documents indexed in the Scopus database between 1933 and 2022. In total, 2999 documents were published with Brazil showing the highest productivity. Antivenom, proteomics, and transcriptomics are emerging as hot topics on a global scale. The present study offers a distinctive overview of snake venom research conducted worldwide. Abstract Snake envenomation is a severe economic and health concern affecting countries worldwide. Snake venom carries a wide variety of small peptides and proteins with various immunological and pharmacological properties. A few key research areas related to snake venom, including its applications in treating cancer and eradicating antibiotic-resistant bacteria, have been gaining significant attention in recent years. The goal of the current study was to analyze the global profile of literature in snake venom research. This study presents a bibliometric review of snake venom-related research documents indexed in the Scopus database between 1933 and 2022. The overall number of documents published on a global scale was 2999, with an average annual production of 34 documents. Brazil produced the highest number of documents (n = 729), followed by the United States (n = 548), Australia (n = 240), and Costa Rica (n = 235). Since 1963, the number of publications has been steadily increasing globally. At a worldwide level, antivenom, proteomics, and transcriptomics are growing hot issues for research in this field. The current research provides a unique overview of snake venom research at global level from 1933 through 2022, and it may be beneficial in guiding future research.
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Diversity of Phospholipases A2 from Bothrops atrox Snake Venom: Adaptive Advantages for Snakes Compromising Treatments for Snakebite Patients. Toxins (Basel) 2022; 14:toxins14080543. [PMID: 36006204 PMCID: PMC9414272 DOI: 10.3390/toxins14080543] [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: 07/13/2022] [Revised: 08/02/2022] [Accepted: 08/04/2022] [Indexed: 11/25/2022] Open
Abstract
The evolution of snake venoms resulted in multigene toxin families that code for structurally similar isoforms eventually harboring distinct functions. PLA2s are dominant toxins in viper venoms, and little is known about the impact of their diversity on human envenomings and neutralization by antivenoms. Here, we show the isolation of three distinct PLA2s from B. atrox venom. FA1 is a Lys-49 homologue, and FA3 and FA4 are catalytic Asp-49 PLA2s. FA1 and FA3 are basic myotoxic proteins, while FA4 is an acid non-myotoxic PLA2. FA3 was the most potent toxin, inducing higher levels of edema, inflammatory nociception, indirect hemolysis, and anticoagulant activity on human, rat, and chicken plasmas. FA4 presented lower anticoagulant activity, and FA1 had only a slight effect on human and rat plasmas. PLA2s presented differential reactivities with antivenoms, with an emphasis on FA3, which was not recognized or neutralized by the antivenoms used in this study. Our findings reveal the functional and antigenic diversity among PLA2s from B. atrox venom, highlighting the importance of assessing venom variability for understanding human envenomations and treatment with antivenoms, particularly evident here as the antivenom fails to recognize FA3, the most active multifunctional toxin described.
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Tan KY, Shamsuddin NN, Tan CH. Sharp-nosed Pit Viper (Deinagkistrodon acutus) from Taiwan and China: A comparative study on venom toxicity and neutralization by two specific antivenoms across the Strait. Acta Trop 2022; 232:106495. [PMID: 35504314 DOI: 10.1016/j.actatropica.2022.106495] [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: 03/19/2022] [Revised: 04/25/2022] [Accepted: 04/29/2022] [Indexed: 11/01/2022]
Abstract
In East Asia, the Sharp-nosed Pit Viper (Deinagkistrodon acutus) is a medically important venomous snake in Taiwan and China, two geographical areas long separated by the Taiwan Strait. Yet, snake venom variation is little known between specimens found across the Strait. This study thus investigated the intra-species variation of D. acutus venoms from Taiwan (Da-Taiwan) and China (Da-China) in their profiles of gel electrophoresis, toxicity, immunoreactivity and neutralization effect by antivenom. Da-China venom exhibited higher procoagulant, hemorrhagic and lethal activities than Da-Taiwan venom, presumably attributed to the higher abundance of moderate-to-high molecular weight toxins (procoagulants and hemorrhagins) in the venom. The mono-specific antivenoms produced in Taiwan (DaMAV-Taiwan) and China (DaMAV-China) were immunoreactive toward both venoms, and were able to neutralize the venom toxicity to different extents. DaMAV-Taiwan was more efficacious in neutralizing the venom procoagulant and lethal effects, while DaMAV-China was more potent against hemorrhagic effect. The discrepancy in efficacy between the two antivenoms could be due to varying proportions of neutralizing antibodies in the respective products, influenced by techniques of antibody raising and purification. Further study is warranted to elucidate variation in the proteome and antigenicity of D. acutus venom between snakes from Taiwan and China.
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Joglekar AV, Dehari D, Anjum MM, Dulla N, Chaudhuri A, Singh S, Agrawal AK. Therapeutic potential of venom peptides: insights in the nanoparticle-mediated venom formulations. FUTURE JOURNAL OF PHARMACEUTICAL SCIENCES 2022. [DOI: 10.1186/s43094-022-00415-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Abstract
Background
Venoms are the secretions produced by animals, generally for the purpose of self-defense or catching a prey. Biochemically venoms are mainly composed of proteins, lipids, carbohydrates, ions, etc., and classified into three major classes, viz. neurotoxic, hemotoxic and cytotoxic based upon their mode of action. Venoms are composed of different specific peptides/toxins which are responsible for their unique biological actions. Though venoms are generally seen as a source of death, scientifically venom is a complex biochemical substance having a specific pharmacologic action which can be used as agents to diagnose and cure a variety of diseases in humans.
Main body
Many of these venoms have been used since centuries, and their specified therapies can also be found in ancient texts such as Charka Samhita. The modern-day example of such venom therapeutic is captopril, an antihypertensive drug developed from venom of Bothrops jararaca. Nanotechnology is a modern-day science of building materials on a nanoscale with advantages like target specificity, increased therapeutic response and diminished side effects. In the present review we have introduced the venom, sources and related constituents in brief, by highlighting the therapeutic potential of venom peptides and focusing more on the nanoformulations-based approaches. This review is an effort to compile all such report to have an idea about the future direction about the nanoplatforms which should be focused to have more clinically relevant formulations for difficult to treat diseases.
Conclusion
Venom peptides which are fatal in nature if used cautiously and effectively can save life. Several research findings suggested that many of the fatal diseases can be effectively treated with venom peptides. Nanotechnology has emerged as novel strategy in diagnosis, treatment and mitigation of diseases in more effective ways. A variety of nanoformulation approaches have been explored to enhance the therapeutic efficacy and reduce the toxicity and targeted delivery of the venom peptide conjugated with it. We concluded that venom peptides along with nanoparticles can evolve as the new era for potential treatments of ongoing and untreatable diseases.
Graphical Abstract
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Adeyi AO, Mustapha KK, Ajisebiola BS, Adeyi OE, Metibemu DS, Okonji RE. Inhibition of Echis ocellatus venom metalloprotease by flavonoid-rich ethyl acetate sub-fraction of Moringa oleifera (Lam.) leaves: in vitro and in silico approaches. TOXIN REV 2022. [DOI: 10.1080/15569543.2021.1893334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
| | | | | | - Olubisi Esther Adeyi
- Department of Biochemistry, Federal University of Agriculture, Abeokuta, Nigeria
| | | | - Raphael Emuebie Okonji
- Department of Biochemistry and Molecular Biology, Obafemi Awolowo University, Ile-Ife, Nigeria
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Analysis of the Composition of Deinagkistrodon acutus Snake Venom Based on Proteomics, and Its Antithrombotic Activity and Toxicity Studies. Molecules 2022; 27:molecules27072229. [PMID: 35408629 PMCID: PMC9000436 DOI: 10.3390/molecules27072229] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Revised: 03/25/2022] [Accepted: 03/28/2022] [Indexed: 02/06/2023] Open
Abstract
There is a strong correlation between the composition of Deinagkistrodon acutus venom proteins and their potential pharmacological effects. The proteomic analysis revealed 103 proteins identified through label-free proteomics from 30 different snake venom families. Phospholipase A2 (30.0%), snaclec (21.0%), antithrombin (17.8%), thrombin (8.1%) and metalloproteinases (4.2%) were the most abundant proteins. The main toxicity of Deinagkistrodon acutus venom is hematotoxicity and neurotoxicity, and it acts on the lung. Deinagkistrodon acutus venom may have anticoagulant and antithrombotic effects. In summary, the protein profile and related toxicity and pharmacological activity of Deinagkistrodon acutus venom from southwest China were put forward for the first time. In addition, we revealed the relationship between the main toxicity, pharmacological effects, and the protein components of snake venom.
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Sandesha VD, Darshan B, Tejas C, Girish KS, Kempaiah K. A comparative cross-reactivity and paraspecific neutralization study on Hypnale hypnale, Echis carinatus, and Daboia russelii monovalent and therapeutic polyvalent anti-venoms. PLoS Negl Trop Dis 2022; 16:e0010292. [PMID: 35344557 PMCID: PMC9037957 DOI: 10.1371/journal.pntd.0010292] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 04/25/2022] [Accepted: 03/01/2022] [Indexed: 12/30/2022] Open
Abstract
Envenoming by the hump-nosed pit viper (Hypnale hypnale) raises concern as it inflicts significant debilitation and death in the Western Ghats of India and in the adjacent island nation of Sri Lanka. In India, its medical significance was realized only during 2007 due to its misidentification as Echis carinatus and sometimes as Daboia russelii. Of late, several case reports have underlined the ineptness of the existing polyvalent anti-venom therapy against H. hypnale envenoming. Currently, H. hypnale bite has remained dreadful in India due to the lack of neutralizing anti-venom therapy. Hence, this study was undertaken to establish a systematic comparative, biochemical, pathological, and immunological properties of Sri Lankan H. hypnale venom alongside Indian E. carinatus, and D. russelii venoms. All three venoms differed markedly in the extent of biochemical activities including proteolytic, deoxyribonuclease, L-amino acid oxidase, 5'-nucleotidase, hyaluronidase, and indirect hemolytic activities. The venoms also differed markedly in their pathological properties such as edema, hemorrhage, myotoxic, cardiotoxic, and coagulant activities. The venoms showed stark differences in their protein banding pattern. Strikingly, the affinity-purified rabbit monovalent anti-venoms prepared against H. hypnale, E. carinatus, and D. russelii venoms readily reacted and neutralized the biochemical and pathological properties of their respective venoms, but they insignificantly cross-reacted with, and thus failed to show paraspecific neutralization of any of the effects of the other two venoms, demonstrating the large degree of variations between these venoms. Further, the Indian therapeutic polyvalent anti-venoms from VINS Bioproducts, and Bharath Serums and Vaccines failed to protect H. hypnale venom-induced lethal effects in mice.
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Affiliation(s)
| | - Bhaskar Darshan
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, Karnataka, India
| | - Chandrashekar Tejas
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, Karnataka, India
| | - Kesturu S. Girish
- Department of Studies and Research in Biochemistry, Tumkur University, Tumakuru, Karnataka, India
| | - Kemparaju Kempaiah
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysuru, Karnataka, India
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Venom proteomic analysis of medically important Nigerian viper Echis ocellatus and Bitis arietans snake species. Biochem Biophys Rep 2021; 28:101164. [PMID: 34765747 PMCID: PMC8571701 DOI: 10.1016/j.bbrep.2021.101164] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/13/2021] [Accepted: 10/25/2021] [Indexed: 11/29/2022] Open
Abstract
Snakebite envenoming remains a neglected tropical disease which poses severe health hazard, especially for the rural inhabitants in Africa. In Nigeria, vipers are responsible for the highest number of deaths. Hydrophilic interaction liquid chromatography coupled with LC-MS/MS was used to analyze the crude venoms of Echis ocellatus (Carpet viper) and Bitis arietans (Puff adder) in order to understand their venom proteomic identities. Results obtained revealed that gel-free proteomic analysis of the crude venoms led to the identification of 85 and 79 proteins, respectively. Seventy-eight (78) proteins were common between the two snake species with a 91.8% similarity score. The identified proteins belong to 18 protein families in E. ocellatus and 14 protein families in B. arietans. Serine proteases (22.31%) and metalloproteinases (21.06%) were the dominant proteins in the venom of B. arietans; while metalloproteinases (34.84%), phospholipase A2s (21.19%) and serine proteases (15.50%) represent the major toxins in the E. ocellatus venom. Other protein families such as three-finger toxins and cysteine-rich venom proteins were detected in low proportions. This study provides an insight into the venom proteomic analysis of the two Nigerian viper species, which could be useful in identifying the toxin families to be neutralized in case of envenomation. Venom proteomic of Nigeria's most medically important snakes is presented. SVMP, SVSP and PLA2 were the major toxin families in E. ocellatus and B. arietans. The venom proteomes of these vipers displayed 91.8% similarity in composition.
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Brown LE, Reyes G, Albrecht EA. Crotalus atrox venom-induced cellular toxicity: Early wound progression involves reactive oxygen species. J Appl Toxicol 2021; 42:852-863. [PMID: 34725845 DOI: 10.1002/jat.4262] [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: 09/15/2021] [Revised: 10/15/2021] [Accepted: 10/15/2021] [Indexed: 11/06/2022]
Abstract
Understanding the mechanisms that produce cellular cytotoxicity is fundamental in the field of toxicology. Cytotoxic stimuli can include organic toxins such as hemorrhagic snake venom, which can lead to secondary complications such as the development of necrotic tissue and profuse scarring. These clinical manifestations mimic cytotoxic responses induce by other organic compounds such as organic acids. We used hemorrhagic snake venom and human embryonic kidney cells (HEK 293T) as a model system to better understand the cellular responses involved in venom induced cytotoxicity. Cells stimulated with Crotalus atrox (CA) (western diamondback) venom for 4 or 10 h demonstrated significant cytotoxicity. Results from 2',7'-Dichlorodihydrofluorescein diacetate (H2 DCF-DA) assays determine CA venom stimulation induces a robust production of reactive oxygen species (ROS) over a 3-h time course. In contrast, pretreatment with polyethylene glycol (PEG)-catalase or N-acetyl cysteine (NAC) prior to CA venom stimulation significantly blunted H2 DCFDA fluorescence fold changes and showed greater cytoprotective effects than cells stimulated with CA venom alone. Pre- incubating HEK293T cells with the NADPH oxidase (NOX) pan-inhibitor VAS2870 prior venom stimulation significantly minimized the venom-induced oxidative burst at early timepoints (≤2 h). Collectively, our experiments show that pre-application of antioxidants reduces CA venom induce cellular toxicity. This result highlights the importance of ROS in the early stages of cytotoxicity and suggests muting ROS production in noxious injuries may increase positive clinical outcomes.
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Affiliation(s)
- Lindsay E Brown
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, Georgia, USA
| | - Giovanni Reyes
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, Georgia, USA
| | - Eric A Albrecht
- Department of Molecular and Cellular Biology, Kennesaw State University, Kennesaw, Georgia, USA
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Yong MY, Tan KY, Tan CH. Potential para-specific and geographical utility of Thai Green Pit Viper (Trimeresurus albolabris) Monovalent Antivenom: Neutralization of procoagulant and hemorrhagic activities of diverse Trimeresurus pit viper venoms. Toxicon 2021; 203:85-92. [PMID: 34600909 DOI: 10.1016/j.toxicon.2021.09.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 09/01/2021] [Accepted: 09/22/2021] [Indexed: 11/29/2022]
Abstract
The Trimeresurus complex consists of diverse medically important venomous pit vipers that cause snakebite envenomation. Antivenoms, however, are in limited supply, and are specific to only two out of the many species across Asia. This study thus investigated the immunoreactivities of regional pit viper antivenoms toward selected Trimeresurus pit viper venoms, and examined the neutralization of their hemotoxic activities. Trimeresurus albolabris Monovalent Antivenom (TaMAV, Thailand) exhibited a higher immunoreactivity than Hemato Bivalent Antivenom (HBAV, raised against Trimeresurus stejnegeri and Protobothrops mucrosquamatus, Taiwan) and Gloydius brevicaudus Monovalent Antivenom (GbMAV, China), attributed to its monovalent nature and conserved antigens in the Trimeresurus pit viper venoms. The venoms showed moderate-to-strong in vitro procoagulant and in vivo hemorrhagic effects consistent with hemotoxic envenomation, except for the Sri Lankan Trimeresurus trigonocephalus venom which lacked hemorrhagic activity. TaMAV was able to differentially neutralize both in vitro and in vivo hemotoxic effects of the venoms, with the lowest efficacy shown against the procoagulant effect of T. trigonocephalus venom. The findings suggest that TaMAV is a potentially useful treatment for envenomation caused by hetero-specific Trimeresurus pit vipers, in particular those in Southeast Asia and East Asia. Clinical study is warranted to establish its spectrum of para-specific effectiveness, and dosages need be tailored to the different species in respective regions.
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Affiliation(s)
- Mun Yee Yong
- Venom Research and Toxicology Laboratory, Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Kae Yi Tan
- Protein and Interactomics Laboratory, Department of Molecular Medicine, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia
| | - Choo Hock Tan
- Venom Research and Toxicology Laboratory, Department of Pharmacology, Faculty of Medicine, University of Malaya, Kuala Lumpur, Malaysia.
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Alomran N, Alsolaiss J, Albulescu LO, Crittenden E, Harrison RA, Ainsworth S, Casewell NR. Pathology-specific experimental antivenoms for haemotoxic snakebite: The impact of immunogen diversity on the in vitro cross-reactivity and in vivo neutralisation of geographically diverse snake venoms. PLoS Negl Trop Dis 2021; 15:e0009659. [PMID: 34407084 PMCID: PMC8423360 DOI: 10.1371/journal.pntd.0009659] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 09/07/2021] [Accepted: 07/18/2021] [Indexed: 11/30/2022] Open
Abstract
BACKGROUND Snakebite is a neglected tropical disease that causes high global rates of mortality and morbidity. Although snakebite can cause a variety of pathologies in victims, haemotoxic effects are particularly common and are typically characterised by haemorrhage and/or venom-induced consumption coagulopathy. Antivenoms are the mainstay therapeutic for treating the toxic effects of snakebite, but despite saving thousands of lives annually, these therapies are associated with limited cross-snake species efficacy due to venom variation, which ultimately restricts their therapeutic utility to particular geographical regions. METHODOLOGY/PRINCIPAL FINDINGS In this study we explored the feasibility of generating globally effective pathology-specific antivenoms to counteract the haemotoxic signs of snakebite envenoming. Two different immunogen mixtures, consisting of seven and twelve haemotoxic venoms sourced from geographically diverse and/or medically important snakes, were used to raise ovine polyclonal antibodies, prior to characterisation of their immunological binding characteristics and in vitro neutralisation profiles against each of the venoms. Despite variability of the immunogen mixtures, both experimental antivenoms exhibited broadly comparable in vitro venom binding and neutralisation profiles against the individual venom immunogens in immunological and functional assays. However, in vivo assessments using a murine preclinical model of antivenom efficacy revealed substantial differences in venom neutralisation. The experimental antivenom generated from the seven venom immunogen mixture outperformed the comparator, by providing protective effects against venom lethality caused by seven of the eight geographically diverse venoms tested, including three distinct venoms that were not used as immunogens to generate this antivenom. These findings suggest that a core set of venom immunogens may be sufficient to stimulate antibodies capable of broadly neutralising a geographically diverse array of haemotoxic snake venoms, and that adding additional venom immunogens may impact negatively on the dose efficacy of the resulting antivenom. CONCLUSIONS/SIGNIFICANCE Although selection of appropriate immunogens that encapsulate venom toxin diversity without diluting antivenom potency remains challenging and further optimisation is required, the findings from this pilot study suggest that the generation of pathology-specific antivenoms with global utility is likely to feasible, thereby highlighting their promise as future modular treatments for the world's tropical snakebite victims.
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Affiliation(s)
- Nessrin Alomran
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom
| | - Jaffer Alsolaiss
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom
| | - Laura-Oana Albulescu
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom
| | - Edouard Crittenden
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom
| | - Robert A. Harrison
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom
- Centre for Drugs and Diagnostics, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom
| | - Stuart Ainsworth
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom
| | - Nicholas R. Casewell
- Centre for Snakebite Research & Interventions, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom
- Centre for Drugs and Diagnostics, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, United Kingdom
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Vieira SAPB, Dos Santos BM, Santos Júnior CD, de Paula VF, Gomes MSR, Ferreira GM, Gonçalves RL, Hirata MH, da Silva RA, Brandeburgo MIH, Mendes MM. Isohemigossypolone: Antiophidic properties of a naphthoquinone isolated from Pachira aquatica Aubl. Comp Biochem Physiol C Toxicol Pharmacol 2021; 245:109028. [PMID: 33676005 DOI: 10.1016/j.cbpc.2021.109028] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/16/2021] [Accepted: 02/23/2021] [Indexed: 01/17/2023]
Abstract
We investigated the antiophidic properties of isohemigossypolone (ISO), a naphthoquinone isolated from the outer bark of the Pachira aquatic Aubl. The inhibition of phospholipase A2, coagulant, fibrinogenolytic, hemorrhagic and myotoxic activities induced by Bothrops pauloensis venom (Pb) was investigated. For this, we use samples resulting from the incubation of Pb with ISO in different concentrations (1:1, 1:5 and 1:10 w/w), we also evaluated the condition of treatment using ISO after 15 min of venom inoculation. The activities of phospholipase A2, coagulant, fibrinogenolytic, hemorrhagic and myotoxic induced by the B. pauloensis venom were significantly inhibited when the ISO was pre-incubated with the crude venom. For in vivo neutralization tests, the results were observed even when the ISO was applied after 15 min of inoculation of the venom or metalloprotease (BthMP). Also, to identify the inhibition mechanism, we performed in silico assays, across simulations of molecular coupling and molecular dynamics, it was possible to identify the modes of interaction between ISO and bothropic toxins BmooMPα-I, Jararacussin-I and BNSP-7. The present study shows that naphthoquinone isohemigossypolone isolated from the P. aquatica plant inhibited part of the local and systemic damage caused by venom proteins, demonstrating the pharmacological potential of this compound in neutralizing the harmful effects caused by snakebites.
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Affiliation(s)
| | - Benedito Matheus Dos Santos
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, SP, Brazil
| | - Célio Dias Santos Júnior
- Institute of Genetics and Biochemistry, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | - Vanderlúcia Fonseca de Paula
- Laboratory of Natural Products, Department of Sciences and Technology, State University of Bahia Southwest (UESB), Jequié, BA, Brazil
| | - Mario Sergio Rocha Gomes
- Institute of Genetics and Biochemistry, Federal University of Uberlândia (UFU), Uberlândia, MG, Brazil
| | - Glaucio Monteiro Ferreira
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, SP, Brazil
| | | | - Mario Hiroyuki Hirata
- Department of Clinical and Toxicological Analysis, School of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, SP, Brazil
| | | | | | - Mirian Machado Mendes
- Special Academic Unit of Biosciences, Federal University of Goiás (UFG), Jataí, GO, Brazil.
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32
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Seneci L, Zdenek CN, Bourke LA, Cochran C, Sánchez EE, Neri-Castro E, Bénard-Valle M, Alagón A, Frank N, Fry BG. A symphony of destruction: Dynamic differential fibrinogenolytic toxicity by rattlesnake (Crotalus and Sistrurus) venoms. Comp Biochem Physiol C Toxicol Pharmacol 2021; 245:109034. [PMID: 33766656 PMCID: PMC8162888 DOI: 10.1016/j.cbpc.2021.109034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 03/02/2021] [Accepted: 03/15/2021] [Indexed: 12/15/2022]
Abstract
What factors influence the evolution of a heavily selected functional trait in a diverse clade? This study adopts rattlesnakes as a model group to investigate the evolutionary history of venom coagulotoxicity in the wider context of phylogenetics, natural history, and biology. Venom-induced clotting of human plasma and fibrinogen was determined and mapped onto the rattlesnake phylogenetic tree to reconstruct the evolution of coagulotoxicity across the group. Our results indicate that venom phenotype is often independent of phylogenetic relationships in rattlesnakes, suggesting the importance of diet and/or other environmental variables in driving venom evolution. Moreover, the striking inter- and intraspecific variability in venom activity on human blood highlights the considerable variability faced by physicians treating envenomation. This study is the most comprehensive effort to date to describe and characterize the evolutionary and biological aspects of coagulotoxins in rattlesnake venom. Further research at finer taxonomic levels is recommended to elucidate patterns of variation within species and lineages.
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Affiliation(s)
- Lorenzo Seneci
- Venom Evolution Lab, School of Biological Sciences, University of Queensland, St Lucia, QLD 4072, Australia; Institute of Biology Leiden (IBL), Leiden University, 2333 BE Leiden, the Netherlands
| | - Christina N Zdenek
- Venom Evolution Lab, School of Biological Sciences, University of Queensland, St Lucia, QLD 4072, Australia
| | - Lachlan A Bourke
- Venom Evolution Lab, School of Biological Sciences, University of Queensland, St Lucia, QLD 4072, Australia
| | - Chip Cochran
- Department of Earth and Biological Sciences, Loma Linda University, Loma Linda, CA 92350, USA
| | - Elda E Sánchez
- National Natural Toxins Research Center (NNTRC), Department of Chemistry, Texas A&M University-Kingsville, MSC 224, 975 West Avenue B, Kingsville, TX 78363, USA
| | - Edgar Neri-Castro
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnologa, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca, Morelos 62210, Mexico
| | - Melisa Bénard-Valle
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnologa, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca, Morelos 62210, Mexico
| | - Alejandro Alagón
- Departamento de Medicina Molecular y Bioprocesos, Instituto de Biotecnologa, Universidad Nacional Autónoma de México, Av. Universidad 2001, Cuernavaca, Morelos 62210, Mexico
| | | | - Bryan G Fry
- Venom Evolution Lab, School of Biological Sciences, University of Queensland, St Lucia, QLD 4072, Australia.
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Silva GM, Berto DH, Lima CA, Waitman KB, Lima CFG, Prezoto BC, Vieira ML, Rocha MMT, Gonçalves LRC, Andrade SA. Synergistic effect of serine protease inhibitors and a bothropic antivenom in reducing local hemorrhage and coagulopathy caused by Bothrops jararaca venom. Toxicon 2021; 199:87-93. [PMID: 34126124 DOI: 10.1016/j.toxicon.2021.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2021] [Revised: 06/05/2021] [Accepted: 06/10/2021] [Indexed: 01/11/2023]
Abstract
Snakebite accidents are a public health problem that affects the whole world, causing thousands of deaths and amputations each year. In Brazil, snakebite envenomations are caused mostly by snakes from the Bothrops genus. The local symptoms are characterized by pain, swelling, ecchymosis, and hemorrhages. Systemic disturbances can lead to necrosis and amputations. The present treatment consists of intravenous administration of bothropic antivenom, which is capable of reversing most of the systemic symptoms, while presenting limitations to treat the local effects, such as hemorrhage and to neutralize the snake venom serine protease (SVSP). In this context, we aimed to evaluate the activity of selective serine protease inhibitors (pepC and pepB) in combination with the bothropic antivenom in vivo. Further, we assessed their possible synergistic effect in the treatment of coagulopathy and hemorrhage induced by Bothrops jararaca venom. For this, we evaluated the in vivo activity in mouse models of local hemorrhage and a series of in vitro hemostasis assays. Our results showed that pepC and pepB, when combinated with the antivenom, increase its protective activity in vivo and decrease the hemostatic disturbances in vitro with high selectivity, possibly by inhibiting botropic proteases. These data suggest that the addition of serine protease inhibitor to the antivenom can improve its overall potential.
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Affiliation(s)
- G M Silva
- Laboratory of Pain and Signaling - Butantan Institute, São Paulo, Brazil.
| | - D H Berto
- Laboratory of Pain and Signaling - Butantan Institute, São Paulo, Brazil
| | - C A Lima
- Laboratory of Pain and Signaling - Butantan Institute, São Paulo, Brazil
| | - K B Waitman
- Laboratory of Pain and Signaling - Butantan Institute, São Paulo, Brazil
| | - C F G Lima
- Laboratory of Pain and Signaling - Butantan Institute, São Paulo, Brazil
| | - B C Prezoto
- Laboratory of Pharmacology - Butantan Institute, São Paulo, Brazil
| | - M L Vieira
- Department of Microbiology, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - M M T Rocha
- Laboratory of Herpetology - Butantan Institute, São Paulo, Brazil
| | - L R C Gonçalves
- Laboratory of Pathophysiology - Butantan Institute, São Paulo, Brazil
| | - S A Andrade
- Laboratory of Pain and Signaling - Butantan Institute, São Paulo, Brazil
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Bennacer A, Boukhalfa-Abib H, Laraba-Djebari F. "Computational and Functional Characterization of a Hemorrhagic Metalloproteinase Purified from Cerastes cerastes Venom". Protein J 2021; 40:589-599. [PMID: 34019197 DOI: 10.1007/s10930-021-09994-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/03/2021] [Indexed: 11/30/2022]
Abstract
Structural and functional aspects of snake venoms metalloproteinases (SVMPs) have been extensively studied due to their role in envenomation. However, in the detection of certain coagulation disorders these biomolecules have been used and applied for the production of new thrombolytic drugs. CcMP-II, a SVMP-II metalloproteinase with a hemorrhagic activity, isolated from the venom of Cerastes cerastes, its sequence of 472 amino acids was identified. Predicted 3D structure showed an arrangement of CcMP-II into two distinct domains: i) a metalloproteinase domain where the zinc-binding motif is found (HXXGHNLGIDH) in addition to the sequence Cys-Ile-Met (CIM) at the Met-turn and ii) disintegrin-like domain containing RGD motif. CcMP-II inhibits platelet aggregation induced by collagen in a dose-dependent manner with an IC50 value estimated of 0.11 nM. This proteinase inhibits also aggregation of platelet stimulated by collagen even if the metal chelating agents (EDTA and 1, 10-phenontroline) are present suggesting that anti-aggregating effect is not due to its metalloproteinase domain, but to its disintegrin-like domain. Capillary pathological modifications caused by CcMP-II following intramuscular injection have as well been examined in mice. The key morphological alterations of the capillary vessels were clearly apparent from the ultrastructural study. The CcMP-II can play a key function in the pathogenesis of disorders that occurs following envenomation of Cerastes cerastes. The three-dimensional model of CcMP-II was built to explain structure-function relationships in ADAM/ADAMTs, a family of proteins having significant therapeutic potential. In order to explain structure-function relationships in ADAM / ADAMT, a family of proteins with considerable therapeutic potential, the three-dimensional model of CcMP-II was constructed.
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Affiliation(s)
- Amel Bennacer
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, BP 32, El-Alia Bab Ezzouar, 16111, Algiers, Algeria
| | - Hinda Boukhalfa-Abib
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, BP 32, El-Alia Bab Ezzouar, 16111, Algiers, Algeria
| | - Fatima Laraba-Djebari
- USTHB, Faculty of Biological Sciences, Laboratory of Cellular and Molecular Biology, BP 32, El-Alia Bab Ezzouar, 16111, Algiers, Algeria.
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Ferraz CR, Carvalho TT, Fattori V, Saraiva-Santos T, Pinho-Ribeiro FA, Borghi SM, Manchope MF, Zaninelli TH, Cunha TM, Casagrande R, Clissa PB, Verri WA. Jararhagin, a snake venom metalloproteinase, induces mechanical hyperalgesia in mice with the neuroinflammatory contribution of spinal cord microglia and astrocytes. Int J Biol Macromol 2021; 179:610-619. [PMID: 33662422 DOI: 10.1016/j.ijbiomac.2021.02.178] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/22/2021] [Accepted: 02/23/2021] [Indexed: 02/06/2023]
Abstract
Jararhagin is a hyperalgesic metalloproteinase from Bothrops jararaca venom. In rodents, jararhagin induces nociceptive behaviors that correlate with an increase in peripheral cytokine levels. However, the role of the spinal cord glia in pain processing after peripheral stimulus of jararhagin has not been investigated. Aiming to explore this proposal, mice received intraplantar (i.pl.) injection of jararhagin and the following parameters were evaluated: hyperalgesia, spinal cord TNF-α, IL-1β levels, and CX3CR1, GFAP and p-NFκB activation. The effects of intrathecal (i.t.) injection of TNF-α soluble receptor (etanercept), IL-1 receptor antagonist (IL-1Ra), and inhibitors of NFκB (PDTC), microglia (minocycline) and astrocytes (α-aminoadipate) were investigated. Jararhagin inoculation induced cytokine production (TNF-α and IL-1β) in the spinal cord, which was reduced by treatment with PDTC (40% and 50%, respectively). Jararhagin mechanical hyperalgesia and cytokine production were inhibited by treatment with etanercept (67%), IL-1Ra (60%), PDTC (70%), minocycline (60%) and α-aminoadipate (45%). Furthermore, jararhagin induced an increase in p-NFκB, CX3CR1 and GFAP detection in the spinal cord indicating activation of NFκB, microglia and astrocytes. These results demonstrate for the first time that jararhagin-induced mechanical hyperalgesia is dependent on spinal cord activation of glial cells, consequent NFκB activation, and cytokine production in mice.
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Affiliation(s)
- Camila R Ferraz
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil
| | - Thacyana T Carvalho
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil
| | - Victor Fattori
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil
| | - Telma Saraiva-Santos
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil
| | - Felipe A Pinho-Ribeiro
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil
| | - Sergio M Borghi
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil; Center for Research in Health Sciences, University of Northern Paraná, Londrina, Paraná, Brazil
| | - Marília F Manchope
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil
| | - Tiago H Zaninelli
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil
| | - Thiago M Cunha
- Department of Pharmacology, Ribeirao Preto Medical School, University of Sao Paulo, Ribeirao Preto, Sao Paulo, Brazil
| | - Rubia Casagrande
- Department of Pharmaceutical Sciences, Center of Health Sciences, Londrina State University, Londrina, Parana, Brazil
| | - Patricia B Clissa
- Laboratory of Immunopathology, Butantan Institute, São Paulo, São Paulo, Brazil
| | - Waldiceu A Verri
- Laboratory of Pain, Inflammation, Neuropathy, and Cancer, Department of Pathology, Londrina State University, Londrina, Paraná, Brazil.
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36
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Tilbury CR, Peacock F, Harvey J. Envenomation by the spotted harlequin snake, Homoroselaps lacteus (Linnaeus) 1754 (Serpentes: Atractaspidinae). Toxicon 2021; 198:151-155. [PMID: 33961849 DOI: 10.1016/j.toxicon.2021.04.020] [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: 03/07/2021] [Revised: 04/16/2021] [Accepted: 04/20/2021] [Indexed: 10/21/2022]
Abstract
Two cases of envenomation from the small, semi-fossorial, front-fanged colubrid Homoroselaps lacteus are presented and the recent literature reviewed. In addition to local oedema and lymphadenopathy, the development of significant subcutaneous loco-regional bruising suggest that damage to capillary basement membrane and possibly other underlying anti-haemostatic effects may pertain to the clinical syndrome. Although local clinical effects may appear dramatic, due to the small volumes of venom that can be injected, it is considered that envenomation is unlikely to cause life-threatening effects.
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Affiliation(s)
- Colin R Tilbury
- Dept of Botany & Zoology, University of Stellenbosch, South Africa. Private Bag X1, Matieland, Stellenbosch, South Africa.
| | - Faansie Peacock
- 1114 Robbejacht Crescent, Langebaan Country Estate, Langebaan, 7357, South Africa
| | - James Harvey
- Harvey Ecological, Greendale Park, Howick, South Africa
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37
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Castro AC, Escalante T, Rucavado A, Gutiérrez JM. Basement membrane degradation and inflammation play a role in the pulmonary hemorrhage induced by a P-III snake venom metalloproteinase. Toxicon 2021; 197:12-23. [PMID: 33872676 DOI: 10.1016/j.toxicon.2021.04.012] [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: 02/05/2021] [Revised: 04/12/2021] [Accepted: 04/14/2021] [Indexed: 10/21/2022]
Abstract
Snakebite envenoming is a neglected tropical disease affecting millions of people every year, especially in vulnerable rural populations in the developing world. Viperid snakes cause envenomings characterized by a complex pathophysiology which includes local and systemic hemorrhage due to the action of snake venom metalloproteinases (SVMPs). The pathogenesis of SVMP-induced systemic hemorrhage has not been investigated in detail. This study explored the pulmonary hemorrhage induced in a murine model by a P-III SVMP from the venom of Crotalus simus. Histological analysis revealed extravasation in the lungs as early as 15 min after intravenous injection of the toxin, and hemorrhage increased at 360 min. Western blot analysis demonstrated the cleavage of basement membrane (BM) proteins in lung homogenates and in bronchoalveolar lavage fluid, implying an enzymatic disruption of this extracellular matrix structure at the capillary-alveolar barrier. Likewise, alveolar edema was observed, with an increment in protein concentration in the bronchoalveolar lavage fluid, and a neutrophil-rich inflammatory infiltrate was present in the parenchyma of the lungs as part of the inflammatory reaction. Pretreatment of mice with indomethacin, pentoxifylline and an anti-neutrophil antibody resulted in a significant decrease in pulmonary hemorrhage at 360 min. These findings suggest that this P-III SVMP induces acute lung injury through the direct action of this enzyme in the capillary-alveolar barrier integrity, as revealed by BM degradation, and as a consequence of the inflammatory reaction that develops in lung tissue. Our findings provide novel clues to understand the mechanism of action of hemorrhagic SVMPs in the lungs.
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Affiliation(s)
- Ana Cristina Castro
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, 11501, Costa Rica
| | - Teresa Escalante
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, 11501, Costa Rica
| | - Alexandra Rucavado
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, 11501, Costa Rica
| | - José María Gutiérrez
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, 11501, Costa Rica.
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38
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Di Nicola MR, Pontara A, Kass GEN, Kramer NI, Avella I, Pampena R, Mercuri SR, Dorne JLCM, Paolino G. Vipers of Major clinical relevance in Europe: Taxonomy, venom composition, toxicology and clinical management of human bites. Toxicology 2021; 453:152724. [PMID: 33610611 DOI: 10.1016/j.tox.2021.152724] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2021] [Revised: 02/09/2021] [Accepted: 02/13/2021] [Indexed: 12/14/2022]
Abstract
Snakebites in Europe are mostly due to bites from Viperidae species of the genus Vipera. This represents a neglected public health hazard with poorly defined incidence, morbidity and mortality. In Europe, fourteen species of "true vipers" (subfamily Viperinae) are present, eleven of which belong to the genus Vipera. Amongst these, the main medically relevant species due to their greater diffusion across Europe and the highest number of registered snakebites are six, namely: Vipera ammodytes, V. aspis, V. berus, V. latastei, V. seoanei and V. ursinii. Generally speaking, viper venom composition is characterised by many different toxin families, like phospholipases A2, snake venom serine proteases, snake venom metalloproteases, cysteine-rich secretory proteins, C-type lectins, disintegrins, haemorrhagic factors and coagulation inhibitors. A suspected snakebite is often associated with severe pain, erythema, oedema and, subsequently, the onset of an ecchymotic area around one or two visible fang marks. In the field, the affected limb should be immobilised and mildly compressed with a bandage, which can then be removed once the patient is being treated in hospital. The clinician should advise the patient to remain calm to reduce blood circulation and, therefore, decrease the spread of the toxins. In the case of pain, an analgesic therapy can be administered, the affected area can be treated with hydrogen peroxide or clean water. However, anti-inflammatory drugs and disinfection with alcohol or alcoholic substances should be avoided. For each patient, clinical chemistry and ECG are always a pre-requisite as well as the evaluation of the tetanus immunisation status and for which immunisation may be provided if needed. The treatment of any clinical complication, due to the envenomation, does not differ from treatments of emergency nature. Antivenom is recommended when signs of systemic envenomation exist or in case of advanced local or systemic progressive symptoms. Recommendations for future work concludes. The aim of this review is to support clinicians for the clinical management of viper envenomation, through taxonomic keys for main species identification, description of venom composition and mode of action of known toxins and provide a standardised clinical protocol and antivenom administration.
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Affiliation(s)
| | - Andrea Pontara
- Internal Medicine, IRCCS San Raffaele Scientific Institute, Milan, Italy
| | - George E N Kass
- European Food Safety Authority, Scientific Committee and Emerging Risks unit, 43126 Parma, Italy
| | - Nynke I Kramer
- Institute for Risk Assessment Sciences, University of Utrecht, Utrecht, the Netherlands
| | - Ignazio Avella
- CIBIO/InBIO - Centro de Investigação em Biodiversidade e Recursos Genéticos da Universidade do Porto, Rua Padre Armando Quintas 7, 4485-661, Vairão, Portugal; Evolutionary and Translational Venomics Laboratory, Instituto de Biomedicina de Valencia - CSIC, Calle Jaime Roig 11, 46010, Valencia, Spain
| | - Riccardo Pampena
- Centro Oncologico ad Alta Tecnologia Diagnostica, Azienda Unità Sanitaria Locale - IRCCS di Reggio Emilia, Italy
| | | | - Jean Lou C M Dorne
- European Food Safety Authority, Scientific Committee and Emerging Risks unit, 43126 Parma, Italy
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Bacterial expression of a snake venom metalloproteinase inhibitory protein from the North American opossum (D.virginiana). Toxicon 2021; 194:1-10. [PMID: 33581173 DOI: 10.1016/j.toxicon.2021.01.008] [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: 11/01/2020] [Revised: 12/21/2020] [Accepted: 01/20/2021] [Indexed: 11/20/2022]
Abstract
A variety of opossum species are resistant to snake venoms due to the presence of antihemorrhagic and antimyotoxic acidic serum glycoproteins that inhibit several toxic venom components. Two virtually identical antihemorrhagic proteins isolated from either the North American opossum (D. virginiana) or the South American big-eared opossum (D. aurita), termed oprin or DM43 respectively, inhibit specific snake venom metalloproteinases (SVMPs). A better understanding of the structure of these proteins may provide useful insight to determine their mechanism of action and for the development of therapeutics against the global health concern of snake-bite envenomation. The aim of this work is to produce a recombinant snake venom metalloproteinase inhibitor (SVMPI) similar to the above opossum proteins in Escherichia coli and determine if this bacterially produced protein inhibits the proteolytic properties of Western Diamondback rattlesnake (C. atrox) venom. The resulting heterologous SVMPI was produced with either a 6-Histidine or maltose binding protein (MBP) affinity tag on either the C-terminus or N-terminus of the protein, respectively. The presence of the solubility enhancing MBP affinity tag resulted in significantly more soluble protein expression. The inhibitory activity was measured using two complementary assays and the MBP labeled SVMPI showed 7-fold less activity as compared to the 6-Histidine labeled SVMPI. Thus, the bacterially derived SVMPI with an unlabeled N-terminus showed high inhibitory activity (IC50 = 4.5 μM). The use of a solubility enhancing MBP fusion protein construct appears to be a productive way to express sufficient quantities of this mammalian protein in E. coli for further study.
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40
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Sanchez-Castro EE, Pajuelo-Reyes C, Tejedo R, Soria-Juan B, Tapia-Limonchi R, Andreu E, Hitos AB, Martin F, Cahuana GM, Guerra-Duarte C, de Assis TCS, Bedoya FJ, Soria B, Chávez-Olórtegui C, Tejedo JR. Mesenchymal Stromal Cell-Based Therapies as Promising Treatments for Muscle Regeneration After Snakebite Envenoming. Front Immunol 2021; 11:609961. [PMID: 33633730 PMCID: PMC7902043 DOI: 10.3389/fimmu.2020.609961] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Accepted: 12/17/2020] [Indexed: 12/16/2022] Open
Abstract
Snakebite envenoming is a global neglected disease with an incidence of up to 2.7 million new cases every year. Although antivenoms are so-far the most effective treatment to reverse the acute systemic effects induced by snakebite envenoming, they have a limited therapeutic potential, being unable to completely neutralize the local venom effects. Local damage, such as dermonecrosis and myonecrosis, can lead to permanent sequelae with physical, social, and psychological implications. The strong inflammatory process induced by snake venoms is associated with poor tissue regeneration, in particular the lack of or reduced skeletal muscle regeneration. Mesenchymal stromal cells (MSCs)-based therapies have shown both anti-inflammatory and pro-regenerative properties. We postulate that using allogeneic MSCs or their cell-free products can induce skeletal muscle regeneration in snakebite victims, improving all the three steps of the skeletal muscle regeneration process, mainly by anti-inflammatory activity, paracrine effects, neovascularization induction, and inhibition of tissue damage, instrumental for microenvironment remodeling and regeneration. Since snakebite envenoming occurs mainly in areas with poor healthcare, we enlist the principles and potential of MSCs-based therapies and discuss regulatory issues, good manufacturing practices, transportation, storage, and related-procedures that could allow the administration of these therapies, looking forward to a safe and cost-effective treatment for a so far unsolved and neglected health problem.
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Affiliation(s)
| | - Cecilia Pajuelo-Reyes
- Institute of Tropical Diseases, Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas, Chachapoyas, Peru
| | - Rebeca Tejedo
- Faculty of Medicine, Universidad Privada San Juan Bautista, Lima, Peru
| | - Bárbara Soria-Juan
- Department of Molecular Biology and Biochemical Engineering, Universidad Pablo de Olavide, Seville, Spain.,Department of Surgery, Fundación Jiménez Díaz, Unidad de Terapias Avanzadas, Universidad Autónoma de Madrid, Madrid, Spain
| | - Rafael Tapia-Limonchi
- Institute of Tropical Diseases, Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas, Chachapoyas, Peru
| | - Etelvina Andreu
- ISABIAL-Hospital General y Universitario de Alicante, Alicante, Spain.,Departmento de Fisica Aplicadas, University Miguel Hernández, Alicante, Spain
| | - Ana B Hitos
- Department of Cell Regeneration and Advanced Therapies, Andalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University of Pablo de Olavide-University of Sevilla-CSIC, Seville, Spain.,Biomedical Research Network for Diabetes and Related Metabolic Diseases-CIBERDEM, Instituto de Salud Carlos III, Madrid, Spain
| | - Franz Martin
- Department of Molecular Biology and Biochemical Engineering, Universidad Pablo de Olavide, Seville, Spain.,Department of Cell Regeneration and Advanced Therapies, Andalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University of Pablo de Olavide-University of Sevilla-CSIC, Seville, Spain.,Biomedical Research Network for Diabetes and Related Metabolic Diseases-CIBERDEM, Instituto de Salud Carlos III, Madrid, Spain
| | - Gladys M Cahuana
- Department of Molecular Biology and Biochemical Engineering, Universidad Pablo de Olavide, Seville, Spain.,Department of Cell Regeneration and Advanced Therapies, Andalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University of Pablo de Olavide-University of Sevilla-CSIC, Seville, Spain
| | - Clara Guerra-Duarte
- Center of Research and Development, Fundação Ezequiel Dias, Belo Horizonte, Brazil
| | - Thamyres C Silva de Assis
- Departament of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Francisco J Bedoya
- Department of Molecular Biology and Biochemical Engineering, Universidad Pablo de Olavide, Seville, Spain.,Department of Cell Regeneration and Advanced Therapies, Andalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University of Pablo de Olavide-University of Sevilla-CSIC, Seville, Spain.,Biomedical Research Network for Diabetes and Related Metabolic Diseases-CIBERDEM, Instituto de Salud Carlos III, Madrid, Spain
| | - Bernat Soria
- Department of Molecular Biology and Biochemical Engineering, Universidad Pablo de Olavide, Seville, Spain.,ISABIAL-Hospital General y Universitario de Alicante, Alicante, Spain.,Biomedical Research Network for Diabetes and Related Metabolic Diseases-CIBERDEM, Instituto de Salud Carlos III, Madrid, Spain.,Institute of Bioengineering, University Miguel Hernandez de Elche, Alicante, Spain
| | - Carlos Chávez-Olórtegui
- Departament of Biochemistry and Immunology, Institute of Biological Sciences, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Juan R Tejedo
- Institute of Tropical Diseases, Universidad Nacional Toribio Rodríguez de Mendoza de Amazonas, Chachapoyas, Peru.,Department of Molecular Biology and Biochemical Engineering, Universidad Pablo de Olavide, Seville, Spain.,Department of Cell Regeneration and Advanced Therapies, Andalusian Center of Molecular Biology and Regenerative Medicine-CABIMER, University of Pablo de Olavide-University of Sevilla-CSIC, Seville, Spain.,Biomedical Research Network for Diabetes and Related Metabolic Diseases-CIBERDEM, Instituto de Salud Carlos III, Madrid, Spain
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Rudresha GV, Urs AP, Manjuprasanna VN, Milan Gowda MD, Jayachandra K, Rajaiah R, Vishwanath BS. Echis carinatus snake venom metalloprotease-induced toxicities in mice: Therapeutic intervention by a repurposed drug, Tetraethyl thiuram disulfide (Disulfiram). PLoS Negl Trop Dis 2021; 15:e0008596. [PMID: 33529194 PMCID: PMC7880489 DOI: 10.1371/journal.pntd.0008596] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 02/12/2021] [Accepted: 01/03/2021] [Indexed: 01/02/2023] Open
Abstract
Echis carinatus (EC) is known as saw-scaled viper and it is endemic to the Indian subcontinent. Envenoming by EC represents a major cause of snakebite mortality and morbidity in the Indian subcontinent. Zinc (Zn++) dependent snake venom metalloproteases (SVMPs) present in Echis carinatus venom (ECV) is well known to cause systemic hemorrhage and coagulopathy in experimental animals. An earlier report has shown that ECV activates neutrophils and releases neutrophil extracellular traps (NETs) that blocks blood vessels leading to severe tissue necrosis. However, the direct involvement of SVMPs in the release of NETs is not clear. Here, we investigated the direct involvement of EC SVMPs in observed pathological symptoms in a preclinical setup using specific Zn++ metal chelator, Tetraethyl thiuram disulfide (TTD)/disulfiram. TTD potently antagonizes the activity of SVMPs-mediated ECM protein degradation in vitro and skin hemorrhage in mice. In addition, TTD protected mice from ECV-induced footpad tissue necrosis by reduced expression of citrullinated H3 (citH3) and myeloperoxidase (MPO) in footpad tissue. TTD also neutralized ECV-induced systemic hemorrhage and conferred protection against lethality in mice. Moreover, TTD inhibited ECV-induced NETosis in human neutrophils and decreased the expression of peptidyl arginine deiminase (PAD) 4, citH3, MPO, and p-ERK. Further, we demonstrated that ECV-induced NETosis and tissue necrosis are mediated via PAR-1-ERK axis. Overall, our results provide an insight into SVMPs-induced toxicities and the promising protective efficacy of TTD can be extrapolated to treat severe tissue necrosis complementing anti-snake venom (ASV).
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Affiliation(s)
- Gotravalli V. Rudresha
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore, Karnataka, India
| | - Amog P. Urs
- The Ohio State University Comprehensive Cancer Center, Columbus, Ohio, United States of America
| | | | | | - Krishnegowda Jayachandra
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore, Karnataka, India
| | - Rajesh Rajaiah
- Department of Studies in Molecular Biology, University of Mysore, Manasagangotri, Mysore, Karnataka, India
| | - Bannikuppe S. Vishwanath
- Department of Studies in Biochemistry, University of Mysore, Manasagangotri, Mysore, Karnataka, India
- Department of Studies in Molecular Biology, University of Mysore, Manasagangotri, Mysore, Karnataka, India
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Escalante T, Saravia-Otten P, Gastaldello S, Hernández R, Marín A, García G, García L, Estrada E, Rucavado A, Gutiérrez JM. Changes in basement membrane components in an experimental model of skeletal muscle degeneration and regeneration induced by snake venom and myotoxic phospholipase A 2. Toxicon 2021; 192:46-56. [PMID: 33460638 DOI: 10.1016/j.toxicon.2021.01.003] [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: 10/06/2020] [Revised: 12/02/2020] [Accepted: 01/10/2021] [Indexed: 12/27/2022]
Abstract
Skeletal muscle regeneration is impaired after myonecrosis induced by viperid snake venoms, but the mechanisms behind such poor regenerative outcome are not fully understood. This study compared the changes in basement membrane (BM) components in mouse skeletal muscle in two different scenarios of muscle injury: (a) injection of Bothrops asper venom, as a model of poor regeneration, and (b) injection of a myotoxic fraction (Mtx) isolated from this venom, as a model of successful regeneration. The degradation and reposition of laminin, type IV collagen and fibronectin were assessed over time by a combination of immunohistochemistry, Western blot, and real time polymerase chain reaction. Both treatments induced degradation of laminin and type IV collagen in areas of muscle necrosis since day one, however, there were differences in the pattern of degradation and reposition of these proteins along time. Overall, Mtx induced a higher synthesis of fibronectin and higher degradation of laminin at intermediate time points, together with higher levels of transcripts for the chains of the three proteins. Instead, venom induced a higher degradation of laminin and type IV collagen at early time intervals, followed by a reduced recovery of type IV collagen by 15 days. These differences in extracellular matrix degradation and remodeling between the two models could be associated to the poor muscle regeneration after myonecrosis induced by B. asper venom.
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Affiliation(s)
- Teresa Escalante
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica.
| | - Patricia Saravia-Otten
- Departamento de Bioquímica, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Guatemala
| | - Stefano Gastaldello
- Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Precision Medicine Research Center, School of Pharmacy, Binzhou Medical University, Laishan District, Guanhai Road 346, Yantai, Shandong Province, 264003, China
| | - Rosario Hernández
- Departamento de Bioquímica, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Guatemala
| | - Alexa Marín
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - Gabriela García
- Departamento de Bioquímica, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Guatemala
| | - Lourdes García
- Departamento de Bioquímica, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Guatemala
| | - Erick Estrada
- Departamento de Bioquímica, Facultad de Ciencias Químicas y Farmacia, Universidad de San Carlos de Guatemala, Guatemala
| | - Alexandra Rucavado
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
| | - José María Gutiérrez
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica.
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Liu CC, Wu CJ, Hsiao YC, Yang YH, Liu KL, Huang GJ, Hsieh CH, Chen CK, Liaw GW. Snake venom proteome of Protobothrops mucrosquamatus in Taiwan: Delaying venom-induced lethality in a rodent model by inhibition of phospholipase A 2 activity with varespladib. J Proteomics 2020; 234:104084. [PMID: 33359941 DOI: 10.1016/j.jprot.2020.104084] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/01/2020] [Accepted: 12/20/2020] [Indexed: 12/26/2022]
Abstract
Protobothrops mucrosquamatus, also known as the brown spotted pit viper or Taiwanese habu, is a medically significant venomous snake in Taiwan, especially in the northern area. To more fully understand the proteome profile of P. mucrosquamatus, we characterized its venom composition using a bottom-up proteomic approach. Whole venom components were fractionated by RP-HPLC and then analyzed by SDS-PAGE. Each protein band in gels was excised and subjected to protein identification by LC-MS/MS. A subsequent proteomic analysis revealed the presence of 61 distinct proteins belonging to 19 families in P. mucrosquamatus venom. Snake venom metalloproteinase (SVMP; 29.4%), C-type lectin (CLEC; 21.1%), snake venom serine protease (SVSP; 17.6%) and phospholipase A2 (PLA2; 15.9%) were the most abundant protein families, whereas several low-abundance proteins, categorized into eight protein families, were demonstrated in P. mucrosquamatus venom for the first time. Because PLA2 is known to make a major contribution to venom lethality, we evaluated whether the known PLA2 inhibitor, varespladib, was capable of preventing the toxic effects of P. mucrosquamatus venom. This small-molecule drug demonstrated the ability to inhibit PLA2 activity in vitro (IC50 = 101.3 nM). It also blunted lethality in vivo, prolonging survival following venom injection in a mouse model, but it showed limited potency against venom-induced local hemorrhage in this model. Our findings provide essential biological and pathophysiological insights into the composition of P. mucrosquamatus venom and suggest PLA2 inhibition as an adjunctive or alternative therapeutic strategy in the clinical management of P. mucrosquamatus envenoming in emergency medicine. SIGNIFICANCE: P. mucrosquamatus envenomation is a significant medical concern in Taiwan, especially in the northern region. Although antivenom is commonly used for rescuing P. mucrosquamatus envenoming, severe clinical events still occur, with more than 20% of cases requiring surgical intervention. Small-molecule therapy offers several advantages as a potential adjunctive, or even alternative, to antivenom treatment, such as heat stability, low antigenicity and ease of administration, among others. A deeper understanding of the venom proteome of P. mucrosquamatus would aid in the discovery of small-molecule drugs that could be repurposed to target specific venom proteins. Here, we applied a bottom-up proteomic approach to characterize the protein profile of P. mucrosquamatus venom. Varespladib, a small-molecule drug used to treat inflammatory disease, was repurposed to inhibit the toxicity of P. mucrosquamatus venom, and was shown to reduce the lethal effects of P. mucrosquamatus envenomation in a rodent model. Varespladib might be used as a first-aid therapeutic against P. mucrosquamatus envenoming in the pre-referral period and/or as an adjunctive agent administered together with anti-P. mucrosquamatus antivenom.
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Affiliation(s)
- Chien-Chun Liu
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan
| | - Cho-Ju Wu
- Department of Emergency Medicine, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan
| | - Yung-Chin Hsiao
- Molecular Medicine Research Center, Chang Gung University, Taoyuan, Taiwan; Liver Research Center, Chang Gung Memorial Hospital at Linkou, Taoyuan, Taiwan
| | - Ya-Han Yang
- School of Medicine, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Kuei-Lin Liu
- Faculty of Biotechnology and Laboratory Science in Medicine, School of Medical Technology and Engineering, National Yang-Ming University, Taipei, Taiwan
| | - Guo-Jen Huang
- Department and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan, Taiwan
| | - Cheng-Hsien Hsieh
- Department of Emergency Medicine, En Chu Kong Hospital, New Taipei City, Taiwan; Graduate Institute of Clinical Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chun-Kuei Chen
- Department of Emergency Medicine, Chang Gung Memorial Hospital and Chang Gung University College of Medicine, Taoyuan, Taiwan.
| | - Geng-Wang Liaw
- Department of Emergency Medicine, Yeezen General Hospital, Taoyuan, Taiwan.
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Biochemical, pharmacological and structural characterization of BmooMP-I, a new P–I metalloproteinase from Bothrops moojeni venom. Biochimie 2020; 179:54-64. [DOI: 10.1016/j.biochi.2020.09.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Revised: 09/01/2020] [Accepted: 09/04/2020] [Indexed: 11/23/2022]
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Almeida D, Domínguez-Pérez D, Matos A, Agüero-Chapin G, Osório H, Vasconcelos V, Campos A, Antunes A. Putative Antimicrobial Peptides of the Posterior Salivary Glands from the Cephalopod Octopus vulgaris Revealed by Exploring a Composite Protein Database. Antibiotics (Basel) 2020; 9:antibiotics9110757. [PMID: 33143020 PMCID: PMC7693380 DOI: 10.3390/antibiotics9110757] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 10/28/2020] [Accepted: 10/28/2020] [Indexed: 12/13/2022] Open
Abstract
Cephalopods, successful predators, can use a mixture of substances to subdue their prey, becoming interesting sources of bioactive compounds. In addition to neurotoxins and enzymes, the presence of antimicrobial compounds has been reported. Recently, the transcriptome and the whole proteome of the Octopus vulgaris salivary apparatus were released, but the role of some compounds—e.g., histones, antimicrobial peptides (AMPs), and toxins—remains unclear. Herein, we profiled the proteome of the posterior salivary glands (PSGs) of O. vulgaris using two sample preparation protocols combined with a shotgun-proteomics approach. Protein identification was performed against a composite database comprising data from the UniProtKB, all transcriptomes available from the cephalopods’ PSGs, and a comprehensive non-redundant AMPs database. Out of the 10,075 proteins clustered in 1868 protein groups, 90 clusters corresponded to venom protein toxin families. Additionally, we detected putative AMPs clustered with histones previously found as abundant proteins in the saliva of O. vulgaris. Some of these histones, such as H2A and H2B, are involved in systemic inflammatory responses and their antimicrobial effects have been demonstrated. These results not only confirm the production of enzymes and toxins by the O. vulgaris PSGs but also suggest their involvement in the first line of defense against microbes.
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Affiliation(s)
- Daniela Almeida
- CIIMAR/CIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Porto, Portugal; (D.A.); (D.D.-P.); (A.M.); (G.A.-C.); (V.V.); (A.C.)
| | - Dany Domínguez-Pérez
- CIIMAR/CIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Porto, Portugal; (D.A.); (D.D.-P.); (A.M.); (G.A.-C.); (V.V.); (A.C.)
| | - Ana Matos
- CIIMAR/CIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Porto, Portugal; (D.A.); (D.D.-P.); (A.M.); (G.A.-C.); (V.V.); (A.C.)
- Biology Department of the Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Guillermin Agüero-Chapin
- CIIMAR/CIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Porto, Portugal; (D.A.); (D.D.-P.); (A.M.); (G.A.-C.); (V.V.); (A.C.)
- Biology Department of the Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Hugo Osório
- i3S—Instituto de Investigação e Inovação em Saúde-i3S, University of Porto, 4200-135 Porto, Portugal;
- Ipatimup—Institute of Molecular Pathology and Immunology of the University of Porto, University of Porto, 4200-135 Porto, Portugal
- Department of Pathology and Oncology of the Faculty of Medicine, University of Porto, 4200-319 Porto, Portugal
| | - Vitor Vasconcelos
- CIIMAR/CIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Porto, Portugal; (D.A.); (D.D.-P.); (A.M.); (G.A.-C.); (V.V.); (A.C.)
- Biology Department of the Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
| | - Alexandre Campos
- CIIMAR/CIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Porto, Portugal; (D.A.); (D.D.-P.); (A.M.); (G.A.-C.); (V.V.); (A.C.)
| | - Agostinho Antunes
- CIIMAR/CIMAR—Interdisciplinary Centre of Marine and Environmental Research, University of Porto, 4450-208 Porto, Portugal; (D.A.); (D.D.-P.); (A.M.); (G.A.-C.); (V.V.); (A.C.)
- Biology Department of the Faculty of Sciences, University of Porto, 4169-007 Porto, Portugal
- Correspondence:
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Gamma irradiated protease from Echis pyramidum venom: A promising immunogen to improve viper bites treatment. Toxicon 2020; 188:108-116. [PMID: 33065201 DOI: 10.1016/j.toxicon.2020.10.013] [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: 06/18/2020] [Revised: 08/22/2020] [Accepted: 10/12/2020] [Indexed: 11/21/2022]
Abstract
Echis pyramidum (Epy) is a venomous snake belongs to Viperidae family; it causes fetal coagulopathy systemic effects and death. Searching for more effective and safe antivenom is mandatory for viper bites treatment. Proteases are the most lethal components in viper venom inducing hemorrhage, edema and coagulation problems. Thus, the study aims to evaluate the potency of the prepared antisera and their neutralizing properties against the biological activities induced by whole Epy venom individually. Echis pyramidum metalloprotease enzyme (60 kDa) was purified using size-exclusion followed by DEAE-ion exchange chromatography. The purified Epy metalloprotease enzyme (SVMP) was detoxified with 1.5 kGy gamma rays from cobalt60 gamma cell and used for immunization. 1.5 kGy irradiated Epy metalloprotease (SVMPi) showed less lethal activity (LD50) compared to the corresponding native immunogen. The prepared antisera boosted against whole Epy venom (WV), 1.5 kGy irradiated whole Epy venom (WVi), SVMP and SVMPi were tested for neutralization of lethality and biological activities induced by Epy venom. The antibodies elicited against WVi and SVMPi were 30,000 and 20,000 EU, respectively. The anti-SVMPi serum showed the highest neutralization of lethality (ED50) compared to the other prepared antisera. In addition, it prolonged the clotting time from 49.0 ± 2.5 to 176.2 ± 1.4 s. Furthermore, it demonstrated a highly neutralizing activity against edema induction and hemorrhage of Epy venom by 66.8% and 94.3%, respectively compared with the other prepared antisera. These findings would encourage further studies for using gamma irradiated purified fraction(s) from different snake venoms as safe antigen(s) to produce more effective antivenoms.
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Evaluation of the anti-snakebite, antimicrobial and antioxidant potential of Philodendron megalophyllum Schott (Araceae), traditionally used in accidents caused by snakes in the western region of Pará, Brazil. Toxicon 2020; 184:99-108. [DOI: 10.1016/j.toxicon.2020.05.024] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 05/16/2020] [Accepted: 05/27/2020] [Indexed: 11/24/2022]
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Bleeding Disorders in Bothrops atrox Envenomations in the Brazilian Amazon: Participation of Hemostatic Factors and the Impact of Tissue Factor. Toxins (Basel) 2020; 12:toxins12090554. [PMID: 32872404 PMCID: PMC7551922 DOI: 10.3390/toxins12090554] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Revised: 08/13/2020] [Accepted: 08/13/2020] [Indexed: 02/06/2023] Open
Abstract
Bleeding is a common hemostatic disorder that occurs in Bothrops envenomations. We evaluated the changes in coagulation, fibrinolysis components, and platelets in Bothrops atrox envenomations with bleeding. This is an observational study with B. atrox snakebite patients (n = 100) treated in Manaus, Brazilian Amazon. Bleeding was recorded on admission and during hospitalization. We found that the platelet count in our patients presented a weak correlation to tissue factor, factor II, and plasminogen. Tissue factor presented weak correlation to factor V, II, D-dimer, plasminogen, alpha 2-antiplasmin, and moderate correlation to fibrinogen and fibrin/fibrinogen degradation product (FDP). Patients with systemic bleeding (n = 20) presented low levels of factor V, II, fibrinogen, plasminogen, and alpha 2-antiplasmin, and high levels of tissue factor and FDP compared to those without bleeding. Patients with only local bleeding (n = 41) and without bleeding showed similar levels of hemostatic factors. Thrombocytopenia was observed mainly in patients with systemic bleeding and increased levels of serum venom. No association was found between venom levels and systemic bleeding, or between venom levels and clinical severity of envenomation. This is the first report that shows the participation of the extrinsic coagulation pathway in the consumption coagulopathy of B. atrox envenomations with systemic bleeding due to tissue factor release.
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Sousa LF, Bernardoni JL, Zdenek CN, Dobson J, Coimbra F, Gillett A, Lopes-Ferreira M, Moura-da-Silva AM, Fry BG. Differential coagulotoxicity of metalloprotease isoforms from Bothrops neuwiedi snake venom and consequent variations in antivenom efficacy. Toxicol Lett 2020; 333:211-221. [PMID: 32841740 DOI: 10.1016/j.toxlet.2020.08.009] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2020] [Revised: 08/17/2020] [Accepted: 08/18/2020] [Indexed: 12/14/2022]
Abstract
Bothrops (lance-head pit vipers) venoms are rich in weaponised metalloprotease enzymes (SVMP). These toxic enzymes are structurally diverse and functionally versatile. Potent coagulotoxicity is particularly important for prey capture (via stroke-induction) and relevant to human clinical cases (due to consumption of clotting factors including the critical depletion of fibrinogen). In this study, three distinct isoforms of P-III class SVMPs (IC, IIB and IIC), isolated from Bothrops neuwiedi venom, were evaluated for their differential capacities to affect hemostasis of prey and human plasma. Furthermore, we tested the relative antivenom neutralisation of effects upon human plasma. The toxic enzymes displayed differential procoagulant potency between plasma types, and clinically relevant antivenom efficacy variations were observed. Of particular importance was the confirmation the antivenom performed better against prothrombin activating toxins than Factor X activating toxins, which is likely due to the greater prevalence of the former in the immunising venoms used for antivenom production. This is clinically relevant as the enzymes displayed differential potency in this regard, with one (IC) in particular being extremely potent in activating Factor X and thus was correspondingly poorly neutralised. This study broadens the current understanding about the adaptive role of the SVMPs, as well as highlights how the functional diversity of SVMP isoforms can influence clinical outcomes. Key Contribution: Our findings shed light upon the hemorrhagic and coagulotoxic effects of three SVMPs of the P-III class, as well as the coagulotoxic effects of SVMPs on human, avian and amphibian plasmas. Antivenom neutralised prothrombin-activating isoforms better than Factor X activating isoforms.
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Affiliation(s)
- Leijiane F Sousa
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo, SP, Brazil; Toxin Evolution Lab, School of Biological Sciences, University of Queensland, Santa Lucia, QLD 4072, Australia
| | | | - Christina N Zdenek
- Toxin Evolution Lab, School of Biological Sciences, University of Queensland, Santa Lucia, QLD 4072, Australia
| | - James Dobson
- Toxin Evolution Lab, School of Biological Sciences, University of Queensland, Santa Lucia, QLD 4072, Australia
| | - Francisco Coimbra
- Toxin Evolution Lab, School of Biological Sciences, University of Queensland, Santa Lucia, QLD 4072, Australia
| | - Amber Gillett
- Fauna Vet Wildlife Veterinary Consultancy, Beerwah, QLD, Australia
| | - Mônica Lopes-Ferreira
- Immunoregulation Unit of the Special Laboratory of Applied Toxinology (Center of Toxins Immune-Response and Cell Signaling), Butantan Institute, São Paulo, SP, Brazil
| | - A M Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo, SP, Brazil.
| | - Bryan G Fry
- Toxin Evolution Lab, School of Biological Sciences, University of Queensland, Santa Lucia, QLD 4072, Australia.
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Cleavage of proteoglycans, plasma proteins and the platelet-derived growth factor receptor in the hemorrhagic process induced by snake venom metalloproteinases. Sci Rep 2020; 10:12912. [PMID: 32737331 PMCID: PMC7395112 DOI: 10.1038/s41598-020-69396-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2020] [Accepted: 07/07/2020] [Indexed: 12/13/2022] Open
Abstract
Envenoming by viperid snakes results in a complex pattern of tissue damage, including hemorrhage, which in severe cases may lead to permanent sequelae. Snake venom metalloproteinases (SVMPs) are main players in this pathogenesis, acting synergistically upon different mammalian proteomes. Hemorrhagic Factor 3 (HF3), a P-III class SVMP from Bothrops jararaca, induces severe local hemorrhage at pmol doses in a murine model. Our hypothesis is that in a complex scenario of tissue damage, HF3 triggers proteolytic cascades by acting on a partially known substrate repertoire. Here, we focused on the hypothesis that different proteoglycans, plasma proteins, and the platelet derived growth factor receptor (PDGFR) could be involved in the HF3-induced hemorrhagic process. In surface plasmon resonance assays, various proteoglycans were demonstrated to interact with HF3, and their incubation with HF3 showed degradation or limited proteolysis. Likewise, Western blot analysis showed in vivo degradation of biglycan, decorin, glypican, lumican and syndecan in the HF3-induced hemorrhagic process. Moreover, antithrombin III, complement components C3 and C4, factor II and plasminogen were cleaved in vitro by HF3. Notably, HF3 cleaved PDGFR (alpha and beta) and PDGF in vitro, while both receptor forms were detected as cleaved in vivo in the hemorrhagic process induced by HF3. These findings outline the multifactorial character of SVMP-induced tissue damage, including the transient activation of tissue proteinases, and underscore for the first time that endothelial glycocalyx proteoglycans and PDGFR are targets of SVMPs in the disruption of microvasculature integrity and generation of hemorrhage.
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