1
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Freitas-de-Sousa LA, Colombini M, Souza VC, Silva JPC, Mota-da-Silva A, Almeida MRN, Machado RA, Fonseca WL, Sartim MA, Sachett J, Serrano SMT, Junqueira-de-Azevedo ILM, Grazziotin FG, Monteiro WM, Bernarde PS, Moura-da-Silva AM. Venom Composition of Neglected Bothropoid Snakes from the Amazon Rainforest: Ecological and Toxinological Implications. Toxins (Basel) 2024; 16:83. [PMID: 38393161 PMCID: PMC10891915 DOI: 10.3390/toxins16020083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/18/2024] [Accepted: 01/30/2024] [Indexed: 02/25/2024] Open
Abstract
Snake venoms have evolved in several families of Caenophidae, and their toxins have been assumed to be biochemical weapons with a role as a trophic adaptation. However, it remains unclear how venom contributes to the success of venomous species for adaptation to different environments. Here we compared the venoms from Bothrocophias hyoprora, Bothrops taeniatus, Bothrops bilineatus smaragdinus, Bothrops brazili, and Bothrops atrox collected in the Amazon Rainforest, aiming to understand the ecological and toxinological consequences of venom composition. Transcriptomic and proteomic analyses indicated that the venoms presented the same toxin groups characteristic from bothropoids, but with distinct isoforms with variable qualitative and quantitative abundances, contributing to distinct enzymatic and toxic effects. Despite the particularities of each venom, commercial Bothrops antivenom recognized the venom components and neutralized the lethality of all species. No clear features could be observed between venoms from arboreal and terrestrial habitats, nor in the dispersion of the species throughout the Amazon habitats, supporting the notion that venom composition may not shape the ecological or toxinological characteristics of these snake species and that other factors influence their foraging or dispersal in different ecological niches.
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Affiliation(s)
| | - Mônica Colombini
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo 05503-900, SP, Brazil; (L.A.F.-d.-S.); (M.C.)
| | - Vinicius C. Souza
- Laboratório de Toxinologia Aplicada, Instituto Butantan, São Paulo 05503-900, SP, Brazil; (V.C.S.); (J.P.C.S.); (S.M.T.S.); (I.L.M.J.-d.-A.)
| | - Joanderson P. C. Silva
- Laboratório de Toxinologia Aplicada, Instituto Butantan, São Paulo 05503-900, SP, Brazil; (V.C.S.); (J.P.C.S.); (S.M.T.S.); (I.L.M.J.-d.-A.)
| | - Ageane Mota-da-Silva
- Instituto Federal do Acre, Campus de Cruzeiro do Sul, Cruzeiro do Sul 69980-000, AC, Brazil;
| | - Marllus R. N. Almeida
- Laboratório de Herpetologia, Universidade Federal do Acre, Campus Floresta, Cruzeiro do Sul 69895-000, AC, Brazil; (M.R.N.A.); (R.A.M.); (W.L.F.); (P.S.B.)
| | - Reginaldo A. Machado
- Laboratório de Herpetologia, Universidade Federal do Acre, Campus Floresta, Cruzeiro do Sul 69895-000, AC, Brazil; (M.R.N.A.); (R.A.M.); (W.L.F.); (P.S.B.)
| | - Wirven L. Fonseca
- Laboratório de Herpetologia, Universidade Federal do Acre, Campus Floresta, Cruzeiro do Sul 69895-000, AC, Brazil; (M.R.N.A.); (R.A.M.); (W.L.F.); (P.S.B.)
| | - Marco A. Sartim
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus 69040-000, AM, Brazil; (M.A.S.); (J.S.); (W.M.M.)
| | - Jacqueline Sachett
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus 69040-000, AM, Brazil; (M.A.S.); (J.S.); (W.M.M.)
| | - Solange M. T. Serrano
- Laboratório de Toxinologia Aplicada, Instituto Butantan, São Paulo 05503-900, SP, Brazil; (V.C.S.); (J.P.C.S.); (S.M.T.S.); (I.L.M.J.-d.-A.)
| | - Inácio L. M. Junqueira-de-Azevedo
- Laboratório de Toxinologia Aplicada, Instituto Butantan, São Paulo 05503-900, SP, Brazil; (V.C.S.); (J.P.C.S.); (S.M.T.S.); (I.L.M.J.-d.-A.)
| | - Felipe G. Grazziotin
- Laboratório de Coleções Zoológicas, Instituto Butantan, São Paulo 05503-900, SP, Brazil;
| | - Wuelton M. Monteiro
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus 69040-000, AM, Brazil; (M.A.S.); (J.S.); (W.M.M.)
| | - Paulo S. Bernarde
- Laboratório de Herpetologia, Universidade Federal do Acre, Campus Floresta, Cruzeiro do Sul 69895-000, AC, Brazil; (M.R.N.A.); (R.A.M.); (W.L.F.); (P.S.B.)
| | - Ana M. Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo 05503-900, SP, Brazil; (L.A.F.-d.-S.); (M.C.)
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2
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Pucca MB, Wen HF, Moura-da-Silva AM, Monteiro WM. Snakebite Clinics and Pathogenesis: From Preclinical to Resource Mapping Studies. Toxins (Basel) 2023; 15:626. [PMID: 37999489 PMCID: PMC10675680 DOI: 10.3390/toxins15110626] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2023] [Accepted: 10/22/2023] [Indexed: 11/25/2023] Open
Abstract
Amidst the global healthcare landscape, the menace of snakebite envenoming (SBE) has persisted, silently afflicting millions and annually claiming tens of thousands of lives [...].
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Affiliation(s)
- Manuela B. Pucca
- Department of Clinical Analysis, School of Pharmaceutical Sciences, São Paulo State University, Araraquara 14800-903, Brazil
| | - Hui F. Wen
- Butantan Institute, São Paulo 05503-900, Brazil; (H.F.W.); (A.M.M.-d.-S.)
| | | | - Wuelton M. Monteiro
- Department of Medicine and Nursing, School of Health Sciences, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus 69040-000, Brazil
- Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus 69040-000, Brazil
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3
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Adrião AAX, dos Santos AO, de Lima EJSP, Maciel JB, Paz WHP, da Silva FMA, Pucca MB, Moura-da-Silva AM, Monteiro WM, Sartim MA, Koolen HHF. Plant-Derived Toxin Inhibitors as Potential Candidates to Complement Antivenom Treatment in Snakebite Envenomations. Front Immunol 2022; 13:842576. [PMID: 35615352 PMCID: PMC9126284 DOI: 10.3389/fimmu.2022.842576] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Accepted: 03/14/2022] [Indexed: 11/13/2022] Open
Abstract
Snakebite envenomations (SBEs) are a neglected medical condition of global importance that mainly affect the tropical and subtropical regions. Clinical manifestations include pain, edema, hemorrhage, tissue necrosis, and neurotoxic signs, and may evolve to functional loss of the affected limb, acute renal and/or respiratory failure, and even death. The standard treatment for snake envenomations is antivenom, which is produced from the hyperimmunization of animals with snake toxins. The inhibition of the effects of SBEs using natural or synthetic compounds has been suggested as a complementary treatment particularly before admission to hospital for antivenom treatment, since these alternative molecules are also able to inhibit toxins. Biodiversity-derived molecules, namely those extracted from medicinal plants, are promising sources of toxin inhibitors that can minimize the deleterious consequences of SBEs. In this review, we systematically synthesize the literature on plant metabolites that can be used as toxin-inhibiting agents, as well as present the potential mechanisms of action of molecules derived from natural sources. These findings aim to further our understanding of the potential of natural products and provide new lead compounds as auxiliary therapies for SBEs.
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Affiliation(s)
- Asenate A. X. Adrião
- Post Graduate Program in Biodiversity and Biotechnology BIONORTE, Superior School of Health Sciences, Amazonas State University, Manaus, Brazil
| | - Aline O. dos Santos
- Post Graduate Program in Biodiversity and Biotechnology BIONORTE, Superior School of Health Sciences, Amazonas State University, Manaus, Brazil
| | - Emilly J. S. P. de Lima
- Post Graduate Program in Biodiversity and Biotechnology BIONORTE, Superior School of Health Sciences, Amazonas State University, Manaus, Brazil
| | - Jéssica B. Maciel
- Post Graduate Program in Tropical Medicine, Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Brazil
| | - Weider H. P. Paz
- Post Graduate Program in Chemistry, Department of Chemistry, Federal University of Amazonas, Manaus, Brazil
| | - Felipe M. A. da Silva
- Post Graduate Program in Chemistry, Department of Chemistry, Federal University of Amazonas, Manaus, Brazil
- Multidisciplinary Support Center, Federal University of Amazonas, Manaus, Brazil
| | - Manuela B. Pucca
- Medical School, Federal University of Roraima, Boa Vista, Brazil
| | - Ana M. Moura-da-Silva
- Post Graduate Program in Tropical Medicine, Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Brazil
- Laboratory of Immunopathology, Institute Butantan, São Paulo, Brazil
| | - Wuelton M. Monteiro
- Post Graduate Program in Tropical Medicine, Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Brazil
| | - Marco A. Sartim
- Post Graduate Program in Biodiversity and Biotechnology BIONORTE, Superior School of Health Sciences, Amazonas State University, Manaus, Brazil
- Post Graduate Program in Tropical Medicine, Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Brazil
- University Nilton Lins, Manaus, Brazil
| | - Hector H. F. Koolen
- Post Graduate Program in Biodiversity and Biotechnology BIONORTE, Superior School of Health Sciences, Amazonas State University, Manaus, Brazil
- Post Graduate Program in Tropical Medicine, Department of Teaching and Research, Dr. Heitor Vieira Dourado Tropical Medicine Foundation, Manaus, Brazil
- Post Graduate Program in Chemistry, Department of Chemistry, Federal University of Amazonas, Manaus, Brazil
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4
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Moura-da-Silva AM. Celebrating 120 Years of Butantan Institute Contributions for Toxinology. Toxins (Basel) 2022; 14:toxins14020076. [PMID: 35202104 PMCID: PMC8878039 DOI: 10.3390/toxins14020076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 01/19/2022] [Indexed: 12/05/2022] Open
Affiliation(s)
- Ana M Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brasil, 1500, São Paulo 05503-900, SP, Brazil
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5
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Gimenes SNC, Sachett JAG, Colombini M, Freitas-de-Sousa LA, Ibiapina HNS, Costa AG, Santana MF, Park JJ, Sherman NE, Ferreira LCL, Wen FH, Monteiro WM, Moura-da-Silva AM, Fox JW. Observation of Bothrops atrox Snake Envenoming Blister Formation from Five Patients: Pathophysiological Insights. Toxins (Basel) 2021; 13:toxins13110800. [PMID: 34822585 PMCID: PMC8618272 DOI: 10.3390/toxins13110800] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 11/08/2021] [Accepted: 11/09/2021] [Indexed: 11/16/2022] Open
Abstract
In the Brazilian Amazon, Bothrops atrox snakebites are frequent, and patients develop tissue damage with blisters sometimes observed in the proximity of the wound. Antivenoms do not seem to impact blister formation, raising questions regarding the mechanisms underlying blister formation. Here, we launched a clinical and laboratory-based study including five patients who followed and were treated by the standard clinical protocols. Blister fluids were collected for proteomic analyses and molecular assessment of the presence of venom and antivenom. Although this was a small patient sample, there appeared to be a correlation between the time of blister appearance (shorter) and the amount of venom present in the serum (higher). Of particular interest was the biochemical identification of both venom and antivenom in all blister fluids. From the proteomic analysis of the blister fluids, all were observed to be a rich source of damage-associated molecular patterns (DAMPs), immunomodulators, and matrix metalloproteinase-9 (MMP-9), suggesting that the mechanisms by which blisters are formed includes the toxins very early in envenomation and continue even after antivenom treatment, due to the pro-inflammatory molecules generated by the toxins in the first moments after envenomings, indicating the need for local treatments with anti-inflammatory drugs plus toxin inhibitors to prevent the severity of the wounds.
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Affiliation(s)
- Sarah N. C. Gimenes
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo 05503-900, SP, Brazil; (S.N.C.G.); (M.C.); (L.A.F.-d.-S.)
| | - Jacqueline A. G. Sachett
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus 69050-030, AM, Brazil; (J.A.G.S.); (H.N.S.I.); (A.G.C.); (M.F.S.); (W.M.M.)
- Departamento de Ensino e Pesquisa, Fundação de Dermatologia Alfredo da Matta, Manaus 69065-130, AM, Brazil
| | - Mônica Colombini
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo 05503-900, SP, Brazil; (S.N.C.G.); (M.C.); (L.A.F.-d.-S.)
| | - Luciana A. Freitas-de-Sousa
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo 05503-900, SP, Brazil; (S.N.C.G.); (M.C.); (L.A.F.-d.-S.)
| | - Hiochelson N. S. Ibiapina
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus 69050-030, AM, Brazil; (J.A.G.S.); (H.N.S.I.); (A.G.C.); (M.F.S.); (W.M.M.)
- Departamento de Ensino e Pesquisa, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus 69040-000, AM, Brazil;
| | - Allyson G. Costa
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus 69050-030, AM, Brazil; (J.A.G.S.); (H.N.S.I.); (A.G.C.); (M.F.S.); (W.M.M.)
- Departamento de Ensino e Pesquisa, Fundação de Hematologia e Hemoterapia do Amazonas, Manaus 69040-010, AM, Brazil
| | - Monique F. Santana
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus 69050-030, AM, Brazil; (J.A.G.S.); (H.N.S.I.); (A.G.C.); (M.F.S.); (W.M.M.)
- Departamento de Ensino e Pesquisa, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus 69040-000, AM, Brazil;
- Departamento de Ensino e Pesquisa, Fundação de Hematologia e Hemoterapia do Amazonas, Manaus 69040-010, AM, Brazil
| | - Jeong-Jin Park
- School of Medicine, University of Virginia, Charlottesville, VA 22903, USA; (J.-J.P.); (N.E.S.)
| | - Nicholas E. Sherman
- School of Medicine, University of Virginia, Charlottesville, VA 22903, USA; (J.-J.P.); (N.E.S.)
| | - Luiz C. L. Ferreira
- Departamento de Ensino e Pesquisa, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus 69040-000, AM, Brazil;
| | - Fan H. Wen
- Núcleo de Produção de Soros, Instituto Butantan, São Paulo 05503-900, SP, Brazil;
| | - Wuelton M. Monteiro
- Escola Superior de Ciências da Saúde, Universidade do Estado do Amazonas, Manaus 69050-030, AM, Brazil; (J.A.G.S.); (H.N.S.I.); (A.G.C.); (M.F.S.); (W.M.M.)
- Departamento de Ensino e Pesquisa, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus 69040-000, AM, Brazil;
| | - Ana M. Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo 05503-900, SP, Brazil; (S.N.C.G.); (M.C.); (L.A.F.-d.-S.)
- Departamento de Ensino e Pesquisa, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, Manaus 69040-000, AM, Brazil;
- Correspondence: (A.M.M.-d.-S.); (J.W.F.)
| | - Jay W. Fox
- School of Medicine, University of Virginia, Charlottesville, VA 22903, USA; (J.-J.P.); (N.E.S.)
- Correspondence: (A.M.M.-d.-S.); (J.W.F.)
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6
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Holding ML, Strickland JL, Rautsaw RM, Hofmann EP, Mason AJ, Hogan MP, Nystrom GS, Ellsworth SA, Colston TJ, Borja M, Castañeda-Gaytán G, Grünwald CI, Jones JM, Freitas-de-Sousa LA, Viala VL, Margres MJ, Hingst-Zaher E, Junqueira-de-Azevedo ILM, Moura-da-Silva AM, Grazziotin FG, Gibbs HL, Rokyta DR, Parkinson CL. Phylogenetically diverse diets favor more complex venoms in North American pitvipers. Proc Natl Acad Sci U S A 2021; 118:e2015579118. [PMID: 33875585 PMCID: PMC8092465 DOI: 10.1073/pnas.2015579118] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
The role of natural selection in the evolution of trait complexity can be characterized by testing hypothesized links between complex forms and their functions across species. Predatory venoms are composed of multiple proteins that collectively function to incapacitate prey. Venom complexity fluctuates over evolutionary timescales, with apparent increases and decreases in complexity, and yet the causes of this variation are unclear. We tested alternative hypotheses linking venom complexity and ecological sources of selection from diet in the largest clade of front-fanged venomous snakes in North America: the rattlesnakes, copperheads, cantils, and cottonmouths. We generated independent transcriptomic and proteomic measures of venom complexity and collated several natural history studies to quantify dietary variation. We then constructed genome-scale phylogenies for these snakes for comparative analyses. Strikingly, prey phylogenetic diversity was more strongly correlated to venom complexity than was overall prey species diversity, specifically implicating prey species' divergence, rather than the number of lineages alone, in the evolution of complexity. Prey phylogenetic diversity further predicted transcriptomic complexity of three of the four largest gene families in viper venom, showing that complexity evolution is a concerted response among many independent gene families. We suggest that the phylogenetic diversity of prey measures functionally relevant divergence in the targets of venom, a claim supported by sequence diversity in the coagulation cascade targets of venom. Our results support the general concept that the diversity of species in an ecological community is more important than their overall number in determining evolutionary patterns in predator trait complexity.
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Affiliation(s)
- Matthew L Holding
- Department of Biological Sciences, Clemson University, Clemson, SC 29634;
- Department of Biological Science, Florida State University, Tallahassee, FL 32306
| | - Jason L Strickland
- Department of Biological Sciences, Clemson University, Clemson, SC 29634
| | - Rhett M Rautsaw
- Department of Biological Sciences, Clemson University, Clemson, SC 29634
| | - Erich P Hofmann
- Department of Biological Sciences, Clemson University, Clemson, SC 29634
| | - Andrew J Mason
- Department of Biological Sciences, Clemson University, Clemson, SC 29634
- Department of Evolution, Ecology and Organismal Biology, The Ohio State University, Columbus, OH 43210
| | - Michael P Hogan
- Department of Biological Science, Florida State University, Tallahassee, FL 32306
| | - Gunnar S Nystrom
- Department of Biological Science, Florida State University, Tallahassee, FL 32306
| | - Schyler A Ellsworth
- Department of Biological Science, Florida State University, Tallahassee, FL 32306
| | - Timothy J Colston
- Department of Biological Science, Florida State University, Tallahassee, FL 32306
| | - Miguel Borja
- Facultad de Ciencias Biológicas, Universidad Juárez del Estado de Durango, C.P. 35010 Gómez Palacio, Dgo., Mexico
| | - Gamaliel Castañeda-Gaytán
- Facultad de Ciencias Biológicas, Universidad Juárez del Estado de Durango, C.P. 35010 Gómez Palacio, Dgo., Mexico
| | | | - Jason M Jones
- HERP.MX A.C., Villa del Álvarez, Colima 28973, Mexico
| | | | - Vincent Louis Viala
- Laboratório de Toxinologia Aplicada, Instituto Butantan, São Paulo 05503-900, Brazil
- Center of Toxins, Immune-Response and Cell Signaling, São Paulo 05503-900, Brazil
| | - Mark J Margres
- Department of Biological Sciences, Clemson University, Clemson, SC 29634
- Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, MA 02138
| | | | - Inácio L M Junqueira-de-Azevedo
- Laboratório de Toxinologia Aplicada, Instituto Butantan, São Paulo 05503-900, Brazil
- Center of Toxins, Immune-Response and Cell Signaling, São Paulo 05503-900, Brazil
| | - Ana M Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo 05503-900, Brazil
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Doutor Heitor Vieira Dourado, Manaus 69040, Brazil
| | - Felipe G Grazziotin
- Laboratório de Coleções Zoológicas, Instituto Butantan, São Paulo 05503-900, Brazil
| | - H Lisle Gibbs
- Department of Evolution, Ecology and Organismal Biology, The Ohio State University, Columbus, OH 43210
| | - Darin R Rokyta
- Department of Biological Science, Florida State University, Tallahassee, FL 32306
| | - Christopher L Parkinson
- Department of Biological Sciences, Clemson University, Clemson, SC 29634;
- Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC 29634
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7
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Freitas-de-Sousa LA, Nachtigall PG, Portes-Junior JA, Holding ML, Nystrom GS, Ellsworth SA, Guimarães NC, Tioyama E, Ortiz F, Silva BR, Kunz TS, Junqueira-de-Azevedo ILM, Grazziotin FG, Rokyta DR, Moura-da-Silva AM. Size Matters: An Evaluation of the Molecular Basis of Ontogenetic Modifications in the Composition of Bothrops jararacussu Snake Venom. Toxins (Basel) 2020; 12:toxins12120791. [PMID: 33322460 PMCID: PMC7763748 DOI: 10.3390/toxins12120791] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/03/2020] [Accepted: 12/07/2020] [Indexed: 12/13/2022] Open
Abstract
Ontogenetic changes in venom composition have been described in Bothrops snakes, but only a few studies have attempted to identify the targeted paralogues or the molecular mechanisms involved in modifications of gene expression during ontogeny. In this study, we decoded B. jararacussu venom gland transcripts from six specimens of varying sizes and analyzed the variability in the composition of independent venom proteomes from 19 individuals. We identified 125 distinct putative toxin transcripts, and of these, 73 were detected in venom proteomes and only 10 were involved in the ontogenetic changes. Ontogenetic variability was linearly related to snake size and did not correspond to the maturation of the reproductive stage. Changes in the transcriptome were highly predictive of changes in the venom proteome. The basic myotoxic phospholipases A2 (PLA2s) were the most abundant components in larger snakes, while in venoms from smaller snakes, PIII-class SVMPs were the major components. The snake venom metalloproteinases (SVMPs) identified corresponded to novel sequences and conferred higher pro-coagulant and hemorrhagic functions to the venom of small snakes. The mechanisms modulating venom variability are predominantly related to transcriptional events and may consist of an advantage of higher hematotoxicity and more efficient predatory function in the venom from small snakes.
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Affiliation(s)
- Luciana A. Freitas-de-Sousa
- Programa de Pós-Graduação em Ciências-Toxinologia, Laboratório de Imunopatologia, Instituto Butantan, 05503-900 São Paulo, SP, Brazil; (N.C.G.); (E.T.)
- Correspondence: (L.A.F.-d.-S.); (A.M.M.-d.-S.); Tel.: +55-11-2627-9779 (A.M.M.-d.-S.)
| | - Pedro G. Nachtigall
- Laboratório Especial de Toxinologia Aplicada, Instituto Butantan, 05503-900 São Paulo, SP, Brazil; (P.G.N.); (I.L.M.J.-d.-A.)
| | - José A. Portes-Junior
- Laboratório de Coleções Zoológicas, Instituto Butantan, 05503-900 São Paulo, SP, Brazil; (J.A.P.-J.); (F.O.); (B.R.S.); (T.S.K.); (F.G.G.)
| | - Matthew L. Holding
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, USA; (M.L.H.); (G.S.N.); (S.A.E.); (D.R.R.)
| | - Gunnar S. Nystrom
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, USA; (M.L.H.); (G.S.N.); (S.A.E.); (D.R.R.)
| | - Schyler A. Ellsworth
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, USA; (M.L.H.); (G.S.N.); (S.A.E.); (D.R.R.)
| | - Noranathan C. Guimarães
- Programa de Pós-Graduação em Ciências-Toxinologia, Laboratório de Imunopatologia, Instituto Butantan, 05503-900 São Paulo, SP, Brazil; (N.C.G.); (E.T.)
| | - Emilly Tioyama
- Programa de Pós-Graduação em Ciências-Toxinologia, Laboratório de Imunopatologia, Instituto Butantan, 05503-900 São Paulo, SP, Brazil; (N.C.G.); (E.T.)
| | - Flora Ortiz
- Laboratório de Coleções Zoológicas, Instituto Butantan, 05503-900 São Paulo, SP, Brazil; (J.A.P.-J.); (F.O.); (B.R.S.); (T.S.K.); (F.G.G.)
| | - Bruno R. Silva
- Laboratório de Coleções Zoológicas, Instituto Butantan, 05503-900 São Paulo, SP, Brazil; (J.A.P.-J.); (F.O.); (B.R.S.); (T.S.K.); (F.G.G.)
| | - Tobias S. Kunz
- Laboratório de Coleções Zoológicas, Instituto Butantan, 05503-900 São Paulo, SP, Brazil; (J.A.P.-J.); (F.O.); (B.R.S.); (T.S.K.); (F.G.G.)
| | | | - Felipe G. Grazziotin
- Laboratório de Coleções Zoológicas, Instituto Butantan, 05503-900 São Paulo, SP, Brazil; (J.A.P.-J.); (F.O.); (B.R.S.); (T.S.K.); (F.G.G.)
| | - Darin R. Rokyta
- Department of Biological Science, Florida State University, Tallahassee, FL 32306, USA; (M.L.H.); (G.S.N.); (S.A.E.); (D.R.R.)
| | - Ana M. Moura-da-Silva
- Programa de Pós-Graduação em Ciências-Toxinologia, Laboratório de Imunopatologia, Instituto Butantan, 05503-900 São Paulo, SP, Brazil; (N.C.G.); (E.T.)
- Instituto de Pesquisa Clínica Carlos Borborema, Fundação de Medicina Tropical Dr. Heitor Vieira Dourado, 69040-000 Manaus, AM, Brazil
- Correspondence: (L.A.F.-d.-S.); (A.M.M.-d.-S.); Tel.: +55-11-2627-9779 (A.M.M.-d.-S.)
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8
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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] [What about the content of this article? (0)] [Affiliation(s)] [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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9
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Amazonas DR, Portes-Junior JA, Nishiyama-Jr MY, Nicolau CA, Chalkidis HM, Mourão RH, Grazziotin FG, Rokyta DR, Gibbs HL, Valente RH, Junqueira-de-Azevedo IL, Moura-da-Silva AM. Molecular mechanisms underlying intraspecific variation in snake venom. J Proteomics 2018; 181:60-72. [DOI: 10.1016/j.jprot.2018.03.032] [Citation(s) in RCA: 38] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2018] [Revised: 03/08/2018] [Accepted: 03/31/2018] [Indexed: 10/17/2022]
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10
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Sousa LF, Portes-Junior JA, Nicolau CA, Bernardoni JL, Nishiyama-Jr MY, Amazonas DR, Freitas-de-Sousa LA, Mourão RHV, Chalkidis HM, Valente RH, Moura-da-Silva AM. Functional proteomic analyses of Bothrops atrox venom reveals phenotypes associated with habitat variation in the Amazon. J Proteomics 2017; 159:32-46. [DOI: 10.1016/j.jprot.2017.03.003] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2016] [Revised: 03/03/2017] [Accepted: 03/04/2017] [Indexed: 12/17/2022]
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11
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Moura-da-Silva AM, Almeida MT, Portes-Junior JA, Nicolau CA, Gomes-Neto F, Valente RH. Processing of Snake Venom Metalloproteinases: Generation of Toxin Diversity and Enzyme Inactivation. Toxins (Basel) 2016; 8:toxins8060183. [PMID: 27294958 PMCID: PMC4926149 DOI: 10.3390/toxins8060183] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2016] [Revised: 05/27/2016] [Accepted: 06/03/2016] [Indexed: 12/28/2022] Open
Abstract
Snake venom metalloproteinases (SVMPs) are abundant in the venoms of vipers and rattlesnakes, playing important roles for the snake adaptation to different environments, and are related to most of the pathological effects of these venoms in human victims. The effectiveness of SVMPs is greatly due to their functional diversity, targeting important physiological proteins or receptors in different tissues and in the coagulation system. Functional diversity is often related to the genetic diversification of the snake venom. In this review, we discuss some published evidence that posit that processing and post-translational modifications are great contributors for the generation of functional diversity and for maintaining latency or inactivation of enzymes belonging to this relevant family of venom toxins.
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Affiliation(s)
- Ana M Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo CEP 05503-900, Brazil.
| | - Michelle T Almeida
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo CEP 05503-900, Brazil.
| | - José A Portes-Junior
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo CEP 05503-900, Brazil.
| | - Carolina A Nicolau
- Laboratório de Toxinologia, Instituto Oswaldo Cruz, Rio de Janeiro CEP 21040-360, Brazil.
| | - Francisco Gomes-Neto
- Laboratório de Toxinologia, Instituto Oswaldo Cruz, Rio de Janeiro CEP 21040-360, Brazil.
| | - Richard H Valente
- Laboratório de Toxinologia, Instituto Oswaldo Cruz, Rio de Janeiro CEP 21040-360, Brazil.
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12
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Baldo C, Lopes DS, Faquim-Mauro EL, Jacysyn JF, Niland S, Eble JA, Clissa PB, Moura-da-Silva AM. Jararhagin disruption of endothelial cell anchorage is enhanced in collagen enriched matrices. Toxicon 2015; 108:240-8. [PMID: 26528579 DOI: 10.1016/j.toxicon.2015.10.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Revised: 10/19/2015] [Accepted: 10/27/2015] [Indexed: 01/13/2023]
Abstract
Hemorrhage is one of the most striking effects of bites by viper snakes resulting in fast bleeding and ischemia in affected tissues. Snake venom metalloproteinases (SVMPs) are responsible for hemorrhagic activity, but the mechanisms involved in SVMP-induced hemorrhage are not entirely understood and the study of such mechanisms greatly depends on in vivo experiments. In vivo, hemorrhagic SVMPs accumulate on basement membrane (BM) of venules and capillary vessels allowing the hydrolysis of collagen IV with consequent weakness and rupture of capillary walls. These effects are not reproducible in vitro with conventional endothelial cell cultures. In this study we used two-dimension (2D) or three-dimension (3D) cultures of HUVECs on matrigel and observed the same characteristics as in ex vivo experiments: only the hemorrhagic toxin was able to localize on surfaces or internalize endothelial cells in 2D cultures or in the surface of tubules formed on 3D cultures. The contribution of matrigel, fibronectin and collagen matrices in jararhagin-induced endothelial cell damage was then analyzed. Collagen and matrigel substrates enhanced the endothelial cell damage induced by jararhagin allowing toxin binding to focal adhesions, disruption of stress fibers, detachment and apoptosis. The higher affinity of jararhagin to collagen than to fibronectin explains the localization of the toxin within BM. Moreover, once located in BM, interactions of jararhagin with α2β1 integrin would favor its localization on focal adhesions, as observed in our study. The accumulation of toxin in focal adhesions, observed only in cells grown in collagen matrices, would explain the enhancement of cell damage in these matrices and reflects the actual interaction among toxin, endothelial cells and BM components that occurs in vivo and results in the hemorrhagic lesions induced by viper venoms.
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Affiliation(s)
- C Baldo
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil
| | - D S Lopes
- Instituto de Genética e Bioquímica, Universidade Federal de Uberlândia, Uberlândia, MG, Brazil
| | - E L Faquim-Mauro
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil
| | - J F Jacysyn
- LIM62, Faculdade de Medicina da Universidade de São Paulo, São Paulo, SP, Brazil
| | - S Niland
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, 48149, Münster, Germany
| | - J A Eble
- Institute of Physiological Chemistry and Pathobiochemistry, University of Münster, 48149, Münster, Germany
| | - P B Clissa
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil
| | - A M Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brazil, 1500, 05503-900, São Paulo, SP, Brazil.
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13
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Bernardoni JL, Sousa LF, Wermelinger LS, Lopes AS, Prezoto BC, Serrano SMT, Zingali RB, Moura-da-Silva AM. Functional variability of snake venom metalloproteinases: adaptive advantages in targeting different prey and implications for human envenomation. PLoS One 2014; 9:e109651. [PMID: 25313513 PMCID: PMC4196926 DOI: 10.1371/journal.pone.0109651] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2014] [Accepted: 09/02/2014] [Indexed: 01/11/2023] Open
Abstract
Snake venom metalloproteinases (SVMPs) are major components in most viperid venoms that induce disturbances in the hemostatic system and tissues of animals envenomated by snakes. These disturbances are involved in human pathology of snake bites and appear to be essential for the capture and digestion of snake's prey and avoidance of predators. SVMPs are a versatile family of venom toxins acting on different hemostatic targets which are present in venoms in distinct structural forms. However, the reason why a large number of different SVMPs are expressed in some venoms is still unclear. In this study, we evaluated the interference of five isolated SVMPs in blood coagulation of humans, birds and small rodents. P-III class SVMPs (fractions Ic, IIb and IIc) possess gelatinolytic and hemorrhagic activities, and, of these, two also show fibrinolytic activity. P-I class SVMPs (fractions IVa and IVb) are only fibrinolytic. P-III class SVMPs reduced clotting time of human plasma. Fraction IIc was characterized as prothrombin activator and fraction Ic as factor X activator. In the absence of Ca2+, a firm clot was observed in chicken blood samples with fractions Ic, IIb and partially with fraction IIc. In contrast, without Ca2+, only fraction IIc was able to induce a firm clot in rat blood. In conclusion, functionally distinct forms of SVMPs were found in B. neuwiedi venom that affect distinct mechanisms in the coagulation system of humans, birds and small rodents. Distinct SVMPs appear to be more specialized to rat or chicken blood, strengthening the current hypothesis that toxin diversity enhances the possibilities of the snakes for hunting different prey or evading different predators. This functional diversity also impacts the complexity of human envenoming since different hemostatic mechanisms will be targeted by SVMPs accounting for the complexity of the response of humans to venoms.
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Affiliation(s)
| | - Leijiane F. Sousa
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo, SP, Brazil
| | - Luciana S. Wermelinger
- Laboratório de Hemostasia e Venenos, Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio do Janeiro, RJ, Brazil
- Laboratório de Fisiopatologia da Trombose, Faculdade de Farmácia, Universidade Federal do Rio de Janeiro, Rio do Janeiro, RJ, Brazil
| | - Aline S. Lopes
- Laboratório Especial de Toxinologia Aplicada, Instituto Butantan, São Paulo, SP, Brazil
- Center of Toxins, Immune-Response and Cell Signaling (CeTICS), FAPESP, São Paulo, SP, Brazil
| | | | - Solange M. T. Serrano
- Laboratório Especial de Toxinologia Aplicada, Instituto Butantan, São Paulo, SP, Brazil
- Center of Toxins, Immune-Response and Cell Signaling (CeTICS), FAPESP, São Paulo, SP, Brazil
| | - Russolina B. Zingali
- Laboratório de Hemostasia e Venenos, Instituto de Bioquímica Médica, Universidade Federal do Rio de Janeiro, Rio do Janeiro, RJ, Brazil
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14
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Portes-Junior JA, Yamanouye N, Carneiro SM, Knittel PS, Sant’Anna SS, Nogueira FCS, Junqueira M, Magalhães GS, Domont GB, Moura-da-Silva AM. Unraveling the Processing and Activation of Snake Venom Metalloproteinases. J Proteome Res 2014; 13:3338-48. [DOI: 10.1021/pr500185a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Affiliation(s)
| | | | | | | | | | - Fabio C. S. Nogueira
- Unidade
de Proteômica, Departamento de Bioquímica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | - Magno Junqueira
- Unidade
de Proteômica, Departamento de Bioquímica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
| | | | - Gilberto B. Domont
- Unidade
de Proteômica, Departamento de Bioquímica, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Rio de Janeiro 21941-909, Brazil
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15
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Abstract
Jararhagin is a metalloproteinase isolated from Bothrops jararaca snake venom, which has been extensively studied. These studies showed its involvement on most of the systemic and local damaging effects of snakebite envenomings. In this review we comment on the major targets of jararhagin as the vascular endothelium, platelets and coagulation factors and also its action on other cell systems as inflammatory cells and their mediators, cancer and cell signaling. The mechanisms of jararhagin action are discussed together with structural features essential for the expression of its biological activities. The studies reviewed here denote jararhagin as a prototype for studies of snake venom metalloproteinases, bringing new insights into cellular-matrix interactions and adding for the improvement of snakebite treatment.
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Affiliation(s)
- Ana M Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brasil 1500, CEP-05503-900 São Paulo, SP, Brazil.
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16
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Brand GD, Salbo R, Jørgensen TJ, Bloch C, Erba EB, Robinson CV, Tanjoni I, Moura-da-Silva AM, Roepstorff P, Domont GB, Perales J, Valente RH, Neves-Ferreira AG. 221. The Interaction of the Antitoxin DM43 with a Snake Venom Metalloproteinase Analyzed by Mass Spectrometry and Surface Plasmon Resonance. Toxicon 2012. [DOI: 10.1016/j.toxicon.2012.04.222] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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17
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Brand GD, Salbo R, Jørgensen TJD, Bloch C, Boeri Erba E, Robinson CV, Tanjoni I, Moura-da-Silva AM, Roepstorff P, Domont GB, Perales J, Valente RH, Neves-Ferreira AGC. The interaction of the antitoxin DM43 with a snake venom metalloproteinase analyzed by mass spectrometry and surface plasmon resonance. J Mass Spectrom 2012; 47:567-73. [PMID: 22549991 DOI: 10.1002/jms.2990] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
DM43 is a circulating dimeric antitoxin isolated from Didelphis aurita, a South American marsupial naturally immune to snake envenomation. This endogenous inhibitor binds non-covalently to jararhagin, the main hemorrhagic metalloproteinase from Bothrops jararaca snake venom, and efficiently neutralizes its toxicity. The aim of this study was to apply mass spectrometry (MS) and surface plasmon resonance (SPR) to improve the molecular characterization of this heterocomplex. The stoichiometry of the interaction was confirmed by nanoelectrospray ionization-quadrupole-time-of-flight MS; from native solution conditions, the complex showed a molecular mass of ~94 kDa, indicating that one molecule of jararhagin (50 kDa) interacts with one monomer of DM43 (43 kDa). Although readily observed in solution, the dimeric structure of the inhibitor was barely preserved in the gas phase. This result suggests that, in contrast to the toxin-antitoxin complex, hydrophobic interactions are the primary driving force for the inhibitor dimerization. For the real-time interaction analysis, the toxin was captured on a sensor chip derivatized with the anti-jararhagin monoclonal antibody MAJar 2. The sensorgrams obtained after successive injections of DM43 in a concentration series were globally fitted to a simple bimolecular interaction, yielding the following kinetic rates for the DM43/jararhagin interaction: k(a) = 3.54 ± 0.03 × 10(4) M(-1) s(-1) and k(d) = 1.16 ± 0.07 × 10(-5) s(-1), resulting in an equilibrium dissociation constant (K(D) ) of 0.33 ± 0.06 nM. Taken together, MS and SPR results show that DM43 binds to its target toxin with high affinity and constitute the first accurate quantitative study on the extent of the interaction between a natural inhibitor and a metalloproteinase toxin, with unequivocal implications for the use of this kind of molecule as template for the rational development of novel antivenom therapies.
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Affiliation(s)
- Guilherme D Brand
- Laboratório de Espectrometria de Massa, Embrapa-Recursos Genéticos e Biotecnologia, Estação Parque Biológico, Final W5, Asa Norte, 70770-900, Brasília, DF, Brazil
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18
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Moura-da-Silva AM, Furlan MS, Caporrino MC, Grego KF, Portes-Junior JA, Clissa PB, Valente RH, Magalhães GS. Diversity of metalloproteinases in Bothrops neuwiedi snake venom transcripts: evidences for recombination between different classes of SVMPs. BMC Genet 2011; 12:94. [PMID: 22044657 PMCID: PMC3217872 DOI: 10.1186/1471-2156-12-94] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Accepted: 11/01/2011] [Indexed: 11/24/2022] Open
Abstract
Background Snake venom metalloproteinases (SVMPs) are widely distributed in snake venoms and are versatile toxins, targeting many important elements involved in hemostasis, such as basement membrane proteins, clotting proteins, platelets, endothelial and inflammatory cells. The functional diversity of SVMPs is in part due to the structural organization of different combinations of catalytic, disintegrin, disintegrin-like and cysteine-rich domains, which categorizes SVMPs in 3 classes of precursor molecules (PI, PII and PIII) further divided in 11 subclasses, 6 of them belonging to PII group. This heterogeneity is currently correlated to genetic accelerated evolution and post-translational modifications. Results Thirty-one SVMP cDNAs were full length cloned from a single specimen of Bothrops neuwiedi snake, sequenced and grouped in eleven distinct sequences and further analyzed by cladistic analysis. Class P-I and class P-III sequences presented the expected tree topology for fibrinolytic and hemorrhagic SVMPs, respectively. In opposition, three distinct segregations were observed for class P-II sequences. P-IIb showed the typical segregation of class P-II SVMPs. However, P-IIa grouped with class P-I cDNAs presenting a 100% identity in the 365 bp at their 5' ends, suggesting post-transcription events for interclass recombination. In addition, catalytic domain of P-IIx sequences segregated with non-hemorrhagic class P-III SVMPs while their disintegrin domain grouped with other class P-II disintegrin domains suggesting independent evolution of catalytic and disintegrin domains. Complementary regions within cDNA sequences were noted and may participate in recombination either at DNA or RNA levels. Proteins predicted by these cDNAs show the main features of the correspondent classes of SVMP, but P-IIb and P-IIx included two additional cysteines cysteines at the C-termini of the disintegrin domains in positions not yet described. Conclusions In B. neuwiedi venom gland, class P-II SVMPs were represented by three different types of transcripts that may have arisen by interclass recombination with P-I and P-III sequences after the divergence of the different classes of SVMPs. Our observations indicate that exon shuffling or post-transcriptional mechanisms may be driving these recombinations generating new functional possibilities for this complex group of snake toxins.
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Fernandes I, Assumpção GG, Silveira CRF, Faquim-Mauro EL, Tanjoni I, Carmona AK, Alves MFM, Takehara HA, Rucavado A, Ramos OHP, Moura-da-Silva AM, Gutiérrez JM. Immunochemical and biological characterization of monoclonal antibodies against BaP1, a metalloproteinase from Bothrops asper snake venom. Toxicon 2010; 56:1059-65. [PMID: 20674587 DOI: 10.1016/j.toxicon.2010.07.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2010] [Revised: 07/19/2010] [Accepted: 07/22/2010] [Indexed: 11/27/2022]
Abstract
BaP1 is a P-I class of Snake Venom Metalloproteinase (SVMP) relevant in the local tissue damage associated with envenomations by Bothrops asper, a medically-important species in Central America and parts of South America. Six monoclonal antibodies (MoAb) against BaP1 (MABaP1) were produced and characterized regarding their isotype, dissociation constant (K(d)), specificity and ability to neutralize BaP1-induced hemorrhagic and proteolytic activity. Two MABaP1 are IgM, three are IgG1 and one is IgG2b. The K(d)s of IgG MoAbs were in the nM range. All IgG MoAbs recognized conformational epitopes of BaP1 and B. asper venom components but failed to recognize venoms from 27 species of Viperidae, Colubridae and Elapidae families. Clone 7 cross-reacted with three P-I SVMPs tested (moojeni protease, insularinase and neuwiedase). BaP1-induced hemorrhage was totally neutralized by clones 3, 6 and 8 but not by clone 7. Inhibition of BaP1 enzymatic activity on a synthetic substrate by MABaP1 was totally achieved by clones 3 and 6, and partially by clone 8, but not by clone 7. In conclusion, these neutralizing MoAbs against BaP1 may become important tools to understand structure-function relationships of BaP1 and the role of P-I class SVMP in snakebite envenomation.
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Affiliation(s)
- I Fernandes
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brazil, 1500, Butantã, CEP 05503-900, São Paulo, SP, Brazil
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20
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Baldo C, Jamora C, Yamanouye N, Zorn TM, Moura-da-Silva AM. Mechanisms of vascular damage by hemorrhagic snake venom metalloproteinases: tissue distribution and in situ hydrolysis. PLoS Negl Trop Dis 2010; 4:e727. [PMID: 20614020 PMCID: PMC2894137 DOI: 10.1371/journal.pntd.0000727] [Citation(s) in RCA: 98] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2010] [Accepted: 05/10/2010] [Indexed: 11/21/2022] Open
Abstract
BACKGROUND Envenoming by viper snakes constitutes an important public health problem in Brazil and other developing countries. Local hemorrhage is an important symptom of these accidents and is correlated with the action of snake venom metalloproteinases (SVMPs). The degradation of vascular basement membrane has been proposed as a key event for the capillary vessel disruption. However, SVMPs that present similar catalytic activity towards extracellular matrix proteins differ in their hemorrhagic activity, suggesting that other mechanisms might be contributing to the accumulation of SVMPs at the snakebite area allowing capillary disruption. METHODOLOGY/PRINCIPAL FINDINGS In this work, we compared the tissue distribution and degradation of extracellular matrix proteins induced by jararhagin (highly hemorrhagic SVMP) and BnP1 (weakly hemorrhagic SVMP) using the mouse skin as experimental model. Jararhagin induced strong hemorrhage accompanied by hydrolysis of collagen fibers in the hypodermis and a marked degradation of type IV collagen at the vascular basement membrane. In contrast, BnP1 induced only a mild hemorrhage and did not disrupt collagen fibers or type IV collagen. Injection of Alexa488-labeled jararhagin revealed fluorescent staining around capillary vessels and co-localization with basement membrane type IV collagen. The same distribution pattern was detected with jararhagin-C (disintegrin-like/cysteine-rich domains of jararhagin). In opposition, BnP1 did not accumulate in the tissues. CONCLUSIONS/SIGNIFICANCE These results show a particular tissue distribution of hemorrhagic toxins accumulating at the basement membrane. This probably occurs through binding to collagens, which are drastically hydrolyzed at the sites of hemorrhagic lesions. Toxin accumulation near blood vessels explains enhanced catalysis of basement membrane components, resulting in the strong hemorrhagic activity of SVMPs. This is a novel mechanism that underlies the difference between hemorrhagic and non-hemorrhagic SVMPs, improving the understanding of snakebite pathology.
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Affiliation(s)
- Cristiani Baldo
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo, São Paulo, Brasil
| | - Colin Jamora
- Section of Cell and Developmental Biology, Division of Biological Sciences, University of California San Diego, La Jolla, California, United States of America
| | - Norma Yamanouye
- Laboratório de Farmacologia, Instituto Butantan, São Paulo, São Paulo, Brasil
| | - Telma M. Zorn
- Laboratório da Biologia da Reprodução e Matriz Extracelular, Instituto de Ciências Biomédicas, USP, São Paulo, São Paulo, Brasil
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Tanjoni I, Evangelista K, Della-Casa MS, Butera D, Magalhães GS, Baldo C, Clissa PB, Fernandes I, Eble J, Moura-da-Silva AM. Different regions of the class P-III snake venom metalloproteinase jararhagin are involved in binding to alpha2beta1 integrin and collagen. Toxicon 2010; 55:1093-9. [PMID: 20056118 DOI: 10.1016/j.toxicon.2009.12.010] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2009] [Revised: 12/09/2009] [Accepted: 12/10/2009] [Indexed: 10/20/2022]
Abstract
SVMPs are multi-domain proteolytic enzymes in which disintegrin-like and cysteine-rich domains bind to cell receptors, plasma or ECM proteins. We have recently reported that jararhagin, a P-III class SVMP, binds to collagen with high affinity through an epitope located within the Da-disintegrin sub-domain. In this study, we evaluated the binding of jararhagin to alpha(2)beta(1) integrin (collagen receptor) using monoclonal antibodies and recombinant jararhagin fragments. In solid phase assays, binding of jararhagin to alpha(2)beta(1) integrin was detectable from concentrations of 20 nM. Using recombinant fragments of jararhagin, only fragment JC76 (residues 344-421), showed a significant binding to recombinant alpha(2)beta(1) integrin. The anti-jararhagin monoclonal antibody MAJar 3 efficiently neutralised binding of jararhagin to collagen, but not to recombinant alpha(2)beta(1) integrin nor to cell-surface-exposed alpha(2)beta(1) integrin (alpha(2)-K562 transfected cells and platelets). The same antibody neutralised collagen-induced platelet aggregation. Our data suggest that jararhagin binding to collagen and alpha(2)beta(1) integrin occurs by two independent motifs, which are located on disintegrin-like and cysteine-rich domains, respectively. Moreover, toxin binding to collagen appears to be sufficient to inhibit collagen-induced platelet aggregation.
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Affiliation(s)
- Isabelle Tanjoni
- Laboratório de Imunopatologia, Instituto Butantan, Butantã, São Paulo, SP, Brazil
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22
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Muniz JRC, Ambrosio ALB, Selistre-de-Araujo HS, Cominetti MR, Moura-da-Silva AM, Oliva G, Garratt RC, Souza DHF. The three-dimensional structure of bothropasin, the main hemorrhagic factor from Bothrops jararaca venom: insights for a new classification of snake venom metalloprotease subgroups. Toxicon 2008; 52:807-16. [PMID: 18831982 DOI: 10.1016/j.toxicon.2008.08.021] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2008] [Revised: 08/01/2008] [Accepted: 08/08/2008] [Indexed: 01/28/2023]
Abstract
Bothropasin is a 48kDa hemorrhagic PIII snake venom metalloprotease (SVMP) isolated from Bothrops jararaca, containing disintegrin/cysteine-rich adhesive domains. Here we present the crystal structure of bothropasin complexed with the inhibitor POL647. The catalytic domain consists of a scaffold of two subdomains organized similarly to those described for other SVMPs, including the zinc and calcium-binding sites. The free cysteine residue Cys189 is located within a hydrophobic core and it is not available for disulfide bonding or other interactions. There is no identifiable secondary structure for the disintegrin domain, but instead it is composed mostly of loops stabilized by seven disulfide bonds and by two calcium ions. The ECD region is in a loop and is structurally related to the RGD region of RGD disintegrins, which are derived from PII SVMPs. The ECD motif is stabilized by the Cys277-Cys310 disulfide bond (between the disintegrin and cysteine-rich domains) and by one calcium ion. The side chain of Glu276 of the ECD motif is exposed to solvent and free to make interactions. In bothropasin, the HVR (hyper-variable region) described for other PIII SVMPs in the cysteine-rich domain, presents a well-conserved sequence with respect to several other PIII members from different species. We propose that this subset be referred to as PIII-HCR (highly conserved region) SVMPs. The differences in the disintegrin-like, cysteine-rich or disintegrin-like cysteine-rich domains may be involved in selecting target binding, which in turn could generate substrate diversity or specificity for the catalytic domain.
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Affiliation(s)
- João R C Muniz
- Departamento de Física e Informática, Instituto de Física de São Carlos, USP, São Carlos-SP CEP 13560-970, Brazil
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23
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Moura-da-Silva AM, Ramos OHP, Baldo C, Niland S, Hansen U, Ventura JS, Furlan S, Butera D, Della-Casa MS, Tanjoni I, Clissa PB, Fernandes I, Chudzinski-Tavassi AM, Eble JA. Collagen binding is a key factor for the hemorrhagic activity of snake venom metalloproteinases. Biochimie 2008; 90:484-92. [PMID: 18096518 DOI: 10.1016/j.biochi.2007.11.009] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2007] [Accepted: 11/26/2007] [Indexed: 11/24/2022]
Abstract
Snake venom metalloproteinases (SVMPs) are multifunctional enzymes involved in several symptoms following snakebite, such as severe local hemorrhage. Multidomain P-III SVMPs are strongly hemorrhagic, whereas single domain P-I SVMPs are not. This indicates that disintegrin-like and cysteine-rich domains allocate motifs that enable catalytic degradation of ECM components leading to disruption of capillary vessels. Interestingly, some P-III SVMPs are completely devoid of hemorrhagic activity despite their highly conserved disintegrin-like and cysteine-rich domains. This observation was approached in the present study by comparing the effects of jararhagin, a hemorrhagic P-III SVMP, and berythractivase, a pro-coagulant and non-hemorrhagic P-III SVMP. Both toxins inhibited collagen-induced platelet aggregation, but only jararhagin was able to bind to collagen I with high affinity. The monoclonal antibody MAJar 3, that neutralizes the hemorrhagic effect of Bothrops venoms and jararhagin binding to collagen, did not react with berythractivase. The three-dimensional structures of jararhagin and berythractivase were compared to explain the differential binding to collagen and MAJar 3. Thereby, we pinpointed a motif within the Da disintegrin subdomain located opposite to the catalytic domain. Jararhagin binds to both collagen I and IV in a triple helix-dependent manner and inhibited in vitro fibrillogenesis. The jararhagin-collagen complex retained the catalytic activity of the toxin as observed by hydrolysis of fibrin. Thus, we suggest that binding of hemorrhagic SVMPs to collagens I and IV occurs through a motif located in the Da subdomain. This allows accumulation of toxin molecules at the site of injection, close to capillary vessels, where their catalytic activity leads to a local hemorrhage. Toxins devoid of this motif would be more available for vascular internalization leading to systemic pro-coagulant effects. This reveals a novel function of the disintegrin domain in hemorrhage formation.
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Affiliation(s)
- A M Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brasil, São Paulo, SP, Brazil.
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24
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Baldo C, Tanjoni I, León IR, Batista IFC, Della-Casa MS, Clissa PB, Weinlich R, Lopes-Ferreira M, Lebrun I, Amarante-Mendes GP, Rodrigues VM, Perales J, Valente RH, Moura-da-Silva AM. BnP1, a novel P-I metalloproteinase from Bothrops neuwiedi venom: biological effects benchmarking relatively to jararhagin, a P-III SVMP. Toxicon 2008; 51:54-65. [PMID: 17889921 DOI: 10.1016/j.toxicon.2007.08.005] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2007] [Revised: 08/09/2007] [Accepted: 08/10/2007] [Indexed: 11/28/2022]
Abstract
Snake venom metalloproteinases (SVMPs) have been extensively studied and their effects associated with the local bleeding observed in human accidents by viper snakes. Representatives of P-I and P-III classes of SVMPs similarly hydrolyze extracellular matrix proteins or coagulation factors while only P-III SVMPs induce significant hemorrhage in experimental models. In this work, the effects of P-I and P-III SVMPs on plasma proteins and cultures of muscle and endothelial cells were compared in order to enlighten the mechanisms involved in venom-induced hemorrhage. To reach this comparison, BnP1 was isolated from B. neuwiedi venom and used as a weakly hemorrhagic P-I SVMPs and jararhagin was used as a model of potently hemorrhagic P-III SVMP. BnP1 was isolated by size exclusion and anion-exchange chromatographies, showing apparent molecular mass of approximately 24kDa and sequence similarity with other members of SVMPs, which allowed its classification as a group P-I SVMP. The comparison of local effects induced by SVMPs showed that BnP1 was devoid of significant myotoxic and hemorrhagic activities and jararhagin presented only hemorrhagic activity. BnP1 and jararhagin were able to hydrolyze fibrinogen and fibrin, although the latter displayed higher activity in both systems. Using HUVEC primary cultures, we observed that BnP1 induced cell detachment and a decrease in the number of viable endothelial cells in levels comparable to those observed by treatment with jararhagin. Moreover, both BnP1 and jararhagin induced apoptosis in HUVECs while only a small increase in LDH supernatant levels was observed after treatment with jararhagin, suggesting that the major mechanism involved in endothelial cell death is apoptosis. Jararhagin and BnP1 induced little effects on C2C12 muscle cell cultures, characterized by a partial detachment 24h after treatment and a mild necrotic effect as evidenced by a small increase in the supernatants LDH levels. Taken together, our data show that P-I and P-III SVMPs presented comparable effects except for the hemorrhagic activity, suggesting that hydrolysis of coagulation factors or damage to endothelial cells are not sufficient for induction of local bleeding.
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Affiliation(s)
- C Baldo
- Laboratórios de Imunopatologia, Instituto Butantan, Av. Vital Brasil, 1500-05503-900, São Paulo, SP, Brasil
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25
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Escalante T, Shannon J, Moura-da-Silva AM, Gutiérrez JM, Fox JW. Novel insights into capillary vessel basement membrane damage by snake venom hemorrhagic metalloproteinases: a biochemical and immunohistochemical study. Arch Biochem Biophys 2006; 455:144-53. [PMID: 17055999 DOI: 10.1016/j.abb.2006.09.018] [Citation(s) in RCA: 80] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2006] [Revised: 09/15/2006] [Accepted: 09/18/2006] [Indexed: 11/16/2022]
Abstract
The hemorrhagic activity characteristic of viperid snake envenomations is due to the action of venom metalloproteinases (SVMPs) on the capillary vessel basement membrane (BM). This study compared the action of two SVMPs on BM in vitro (degradation of Matrigel) and in vivo (immunohistochemical assessment of BM markers in mouse gastrocnemius muscle). SVMPs BaP1 (belonging to the P-I class) and jararhagin (of the P-III class) had a similar proteolytic activity on azocasein and degraded Matrigel with a slightly different cleavage pattern, since BaP1 exerted a limited proteolysis of both laminin and nidogen, whereas jararhagin predominantly degraded nidogen. In contrast with this pattern of limited proteolysis of BM proteins observed in vitro, immunohistochemical analysis of laminin, nidogen and type IV collagen, as well as of the endothelial cell marker VEGFR-2, in the hemorrhagic areas in the muscle, revealed a pronounced reduction in the immunostaining of these three BM components, associated with a loss of the endothelial cell marker. BM of muscle fibers was affected to a lesser extent. In conclusion, in vitro results demonstrated that SVMPs induce a pattern of limited proteolysis on BM components. The drastic loss of these antigens in affected capillaries in vivo is likely to depend on the combination of limited proteolysis of BM and the action of hemodynamic biophysical forces, previously shown to play a role in SVMP-induced capillary damage, which may cause a mechanical disruption of BM structure.
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Affiliation(s)
- Teresa Escalante
- Instituto Clodomiro Picado, Facultad de Microbiología, Universidad de Costa Rica, San José, Costa Rica
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26
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Magalhães GS, Junqueira-de-Azevedo ILM, Lopes-Ferreira M, Lorenzini DM, Ho PL, Moura-da-Silva AM. Transcriptome analysis of expressed sequence tags from the venom glands of the fish Thalassophryne nattereri. Biochimie 2006; 88:693-9. [PMID: 16488069 DOI: 10.1016/j.biochi.2005.12.008] [Citation(s) in RCA: 56] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2005] [Accepted: 12/22/2005] [Indexed: 11/18/2022]
Abstract
Thalassophryne nattereri (niquim) is a venomous fish found on the northern and northeastern coasts of Brazil. Every year, hundreds of humans are affected by the poison, which causes excruciating local pain, edema, and necrosis, and can lead to permanent disabilities. In experimental models, T. nattereri venom induces edema and nociception, which are correlated to human symptoms and dependent on venom kininogenase activity; myotoxicity; impairment of blood flow; platelet lysis and cytotoxicity on endothelial cells. These effects were observed with minute amounts of venom. To characterize the primary structure of T. nattereri venom toxins, a list of transcripts within the venom gland was made using the expressed sequence tag (EST) strategy. Here we report the analysis of 775 ESTs that were obtained from a directional cDNA library of T. nattereri venom gland. Of these ESTs, 527 (68%) were related to sequences previously described. These were categorized into 10 groups according to their biological functions. Sequences involved in gene and protein expression accounted for 14.3% of the ESTs, reflecting the important role of protein synthesis in this gland. Other groups included proteins engaged in the assembly of disulfide bonds (0.5%), chaperones involved in the folding of nascent proteins (1.4%), and sequences related to clusterin (1.5%), as well as transcripts related to calcium binding proteins (1.0%). We detected a large cluster (1.3%) related to cocaine- and amphetamine-regulated transcript (CART), a peptide involved in the regulation of food intake. Surprisingly, several retrotransposon-like sequences (1.0%) were found in the library. It may be that their presence accounts for some of the variation in venom toxins. The toxin category (18.8%) included natterins (18%), which are a new group of kininogenases recently described by our group, and a group of C-type lectins (0.8%). In addition, a considerable number of sequences (32%) was not related to sequences in the databases, which indicates that a great number of new toxins and proteins are still to be discovered from this fish venom gland.
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Affiliation(s)
- G S Magalhães
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brasil 1500, 05503-900 São Paulo, SP, Brazil
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Clissa PB, Lopes-Ferreira M, Della-Casa MS, Farsky SHP, Moura-da-Silva AM. Importance of jararhagin disintegrin-like and cysteine-rich domains in the early events of local inflammatory response. Toxicon 2006; 47:591-6. [PMID: 16564063 DOI: 10.1016/j.toxicon.2006.02.001] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2005] [Revised: 01/31/2006] [Accepted: 02/01/2006] [Indexed: 10/24/2022]
Abstract
Jararhagin is a multi-domain SVMP from Bothrops jararaca venom comprising catalytic, disintegrin-like and cysteine-rich domains, which cause a local reaction manifested by hemorrhage, edema, cytokine release and inflammatory cell recruitment. In this study, the importance of disintegrin-like/cysteine-rich domains of jararhagin was addressed by analyzing the effects of jararhagin-C, which lacks the catalytic domain, in induction of leukocyte rolling and release of pro-inflammatory cytokines. Jararhagin-C was isolated from B. jararaca venom conserving the same ability of complete jararhagin molecule in inhibiting collagen-induced platelet-aggregation. Treatment of trans-illuminated cremaster muscle in vivo with jararhagin-C increased number of rolling leukocytes (approximately 250%) in post-capillary venules in all periods analyzed, without interfering with microvasculature haemodynamic, like vessel diameter, the erythrocyte speed or the blood flow rate. The release of pro-inflammatory cytokines TNF-alpha, IL-1beta and IL-6 was significantly enhanced in the local of jararhagin-C injection, showing the maximum levels in periods between 2 and 4 h after treatment. Besides the action of jararhagin-C, the presence of the inactivated catalytic domain in o-phenanthrolin-treated jararhagin was related to a higher increase in the number of rolling leukocytes. Moreover, the levels of IL-6 and IL-1beta induced by catalytically active jararhagin were higher than those induced by jararhagin-C. In conclusion, our findings suggest that the disintegrin-like/cysteine-rich domains of jararhagin are sufficient to locally activate the early events of an acute inflammatory response as leukocyte rolling and pro-inflammatory cytokine release and this action may add to the effect of catalysis, which enhances the primary cell activation.
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Affiliation(s)
- P B Clissa
- Immunopathology Laboratory, Butantan Institute, Av. Dr. Vital Brazil, 1500, Butantan, Sao Paulo 05503-900, SP, Brazil.
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Carneiro SM, Zablith MB, Kerchove CM, Moura-da-Silva AM, Quissell DO, Markus RP, Yamanouye N. Venom production in long-term primary culture of secretory cells of the Bothrops jararaca venom gland. Toxicon 2006; 47:87-94. [PMID: 16310237 DOI: 10.1016/j.toxicon.2005.10.006] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2005] [Revised: 10/06/2005] [Accepted: 10/08/2005] [Indexed: 11/19/2022]
Abstract
There is an increasing interest of obtaining venom by other ways than from extracting it from snakes captured in the wild. A readily available source of this venom will be useful for all pharmacological and biotechnological studies, as well as providing an improved avenue for treatments of snakebites. Here, we show that secretory cells of venom gland can be a good in vitro apparatus to produce venom. We have maintained and morphologically characterized the secretory cells of the Bothrops jararaca venom gland cultured up to 21 days. The isolated cells assemble into acini that growth in size up to 21st day, instead of adhering to the substrate. Bothropasin, a venom metalloprotease, was localized in secretory vesicles by immunoelectron microscopy and venom was also detected in culture medium in a concentration as high as 63 microg/ml. These data show that the acini formed in culture are functionally viable; they can produce and secrete venom.
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Affiliation(s)
- S M Carneiro
- Laboratório de Biologia Celular, Instituto Butantan, Av. Vital Brazil, 1500, 05503-900 São Paulo, SP, Brazil
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29
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Gallagher P, Bao Y, Serrano SMT, Laing GD, Theakston RDG, Gutiérrez JM, Escalante T, Zigrino P, Moura-da-Silva AM, Nischt R, Mauch C, Moskaluk C, Fox JW. Role of the snake venom toxin jararhagin in proinflammatory pathogenesis: in vitro and in vivo gene expression analysis of the effects of the toxin. Arch Biochem Biophys 2005; 441:1-15. [PMID: 16083850 DOI: 10.1016/j.abb.2005.06.007] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2005] [Revised: 06/08/2005] [Accepted: 06/09/2005] [Indexed: 10/25/2022]
Abstract
To assess the indirect effects of snake venom metalloproteinases (SVMP) on host tissue local necrosis, we investigated the effect of the SVMP jararhagin on the gene expression profiles of human fibroblasts in vitro and mouse tissue in vivo. Two functional classes of up-regulated proteins, cell death and inflammatory disease were identified as being significantly populated. The changes in gene expression observed by qRT-PCR on laser microdissected mouse muscle tissue treated with jararhagin were similar with significant up-regulation of proinflammatory transcripts such as IL-1 beta, IL-6, CXCL1, CXCL2, IL-8, and apoptosis, inflammation responsive transcripts such as TNF-alpha induced protein 6. Proteolytically inactive jararhagin had no effect on the gene expression profile of fibroblasts, indicating proteolysis as the primary mechanism affecting gene expression of cells and tissues resulting in a proinflammatory, pro-apoptotic host response which likely exacerbates the local necrosis frequently observed at the site of envenoming.
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Affiliation(s)
- Paul Gallagher
- Department of Microbiology, University of Virginia, Charlottesville, VA 22908-0734, USA
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Tanjoni I, Weinlich R, Della-Casa MS, Clissa PB, Saldanha-Gama RF, de Freitas MS, Barja-Fidalgo C, Amarante-Mendes GP, Moura-da-Silva AM. Jararhagin, a snake venom metalloproteinase, induces a specialized form of apoptosis (anoikis) selective to endothelial cells. Apoptosis 2005; 10:851-61. [PMID: 16133875 DOI: 10.1007/s10495-005-2945-1] [Citation(s) in RCA: 60] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Jararhagin is a snake venom metalloproteinase (SVMP) from Bothrops jararaca involved in several hemostatic and inflammatory disorders that occur in human envenomings. In this study, we evaluated the effect of jararhagin on endothelial cells (tEnd). The exposure of tEnd to jararhagin (20 and 40microg/ml) resulted in apoptosis with activation of pro-caspase-3 and alterations in the ratio between Bax/Bcl-xL. We observed that apoptosis was followed by decrease of cell viability and the loss of cell adhesion. Jararhagin induced changes in cell shape with a decrease in cell spreading, rounding up and detachment. This was accompanied by a rearrangement of actin network and a decrease in FAK association to actin and in tyrosine phosphorylated proteins. Morphological alterations and apoptosis were abolished when jararhagin catalytic activity was inhibited, indicating the importance of catalysis. Treatment of murine peritoneal adherent cells or fibroblasts with jararhagin did not result in apoptosis. The data indicate that the pro-apoptotic effect of jararhagin is selective to endothelial cells, interfering with the adhesion mechanisms and inducing anoikis. The present model might be useful for the study of the relationships between the architectural changes in the cytoskeleton and the complex phenomenon named anoikis.
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Affiliation(s)
- I Tanjoni
- Laboratório de Imunopatologia, Instituto Butantan, Brazil
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31
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Abstract
Jararhagin is a 52 kDa hemorrhagic P-III metalloproteinase isolated from the venom of the medically important Brazilian pit-viper Bothrops jararaca. It is a member of the reprolysin family of zinc metalloproteinases containing a catalytic metalloproteinase domain followed by a disintegrin-like and a cysteine-rich domain. The impact of jararhagin on hemostasis has been extensively studied using in vitro and in vivo model systems as well as in clinical studies. Jararhagin-induced hemorrhage is the result of the degradation of sub-endothelial matrix proteins leading to the disruption of the blood vessel endothelium, with accompanying disturbances in platelet function. The versatility of jararhagin is further demonstrated by its direct action on von Willebrand factor, the degradation of fibrinogen, by its inhibition of platelet adhesion to collagen and by its inability to be affected by the plasma inhibitor alpha(2)-macroglobulin. Collagen-induced platelet aggregation is inhibited by jararhagin though the binding of the molecule to the alpha(2) subunit I domain of the platelet surface alpha(2)beta(1) integrin (collagen receptor). Jararhagin also cleaves the beta(1) subunit of the same integrin, inhibiting platelet interaction and ultimately causing impairment of signal transduction. The effect of jararhagin on cell systems other than platelets is evaluated; in fibroblasts, jararhagin functions as a collagen-mimetic substrate and, in endothelial cells, it causes apoptosis and indirectly inhibits cell proliferation by release of angiostatin-like compounds. Jararhagin induces a strong pro-inflammatory response characterized by intense leukocyte accumulation at the site of the injection. Although hemorrhage and edema are a response to the direct effect of jararhagin, jararhagin-induced inflammation and necrosis are dependent on macrophages and key pro-inflammatory cytokines or their receptors. Some data also indicate that the toxin possesses anti-tumorgenic properties. Methods for inhibiting jararhagin are reviewed; this encompasses the use of synthetic peptides to the isolation of naturally occurring mammalian peptides and the development of toxin-specific antibodies through DNA immunisation and monoclonal antibody technologies. The availability of jararhagin makes it an important tool for research into the mechanisms of action of similar toxins, for insights into cellular interactions and for clinical investigations into the treatment of envenomings from B. jararaca.
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Affiliation(s)
- Gavin D Laing
- Alistair Reid Venom Research Unit, Liverpool School of Tropical Medicine, Pembroke Place, Liverpool, UK
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32
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Magalhães GS, Lopes-Ferreira M, Junqueira-de-Azevedo ILM, Spencer PJ, Araújo MS, Portaro FCV, Ma L, Valente RH, Juliano L, Fox JW, Ho PL, Moura-da-Silva AM. Natterins, a new class of proteins with kininogenase activity characterized from Thalassophryne nattereri fish venom. Biochimie 2005; 87:687-99. [PMID: 16054523 DOI: 10.1016/j.biochi.2005.03.016] [Citation(s) in RCA: 85] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2005] [Revised: 03/18/2005] [Accepted: 03/29/2005] [Indexed: 11/27/2022]
Abstract
A novel family of proteins with kininogenase activity and unique primary structure was characterized using combined pharmacological, proteomic and transcriptomic approaches of Thalassophryne nattereri fish venom. The major venom components were isolated and submitted to bioassays corresponding to its main effects: nociception and edema. These activities were mostly located in one fraction (MS3), which was further fractionated. The isolated protein, named natterin, was able to induce edema, nociception and cleave human kininogen and kininogen-derived synthetic peptides, releasing kallidin (Lys-bradykinin). The enzymatic digestion was inhibited by kallikrein inhibitors as Trasylol and TKI. Natterin N-terminal peptide showed no similarity with already known proteins present in databanks. Primary structure of natterin was obtained by a transcriptomic approach using a representative cDNA library constructed from T. nattereri venom glands. Several expressed sequence tags (ESTs) were obtained and processed by bioinformatics revealing a major group (18%) of related sequences unknown to gene or protein sequence databases. This group included sequences showing the N-terminus of isolated natterin and was named Natterin family. Analysis of this family allowed us to identify five related sequences, which we called natterin 1-4 and P. Natterin 1 and 2 sequences include the N-terminus of the isolated natterin. Furthermore, internal peptides of natterin 1-3 were found in major spots of whole venom submitted to mass spectrometry/2DGE. Similarly to the ESTs, the complete sequences of natterins did not show any significant similarity with already described tissue kallikreins, kininogenases or any proteinase, all being entirely new. These data present a new task for the knowledge of the action of kininogenases and may help in understanding the mechanisms of T. nattereri fish envenoming, which is an important medical problem in North and Northeast of Brazil.
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Affiliation(s)
- G S Magalhães
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brasil, 1500, 05503-900 São Paulo, SP, Brazil
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Tanjoni I, Butera D, Bento L, Della-Casa MS, Marques-Porto R, Takehara HA, Gutiérrez JM, Fernandes I, Moura-da-Silva AM. Snake venom metalloproteinases: structure/function relationships studies using monoclonal antibodies. Toxicon 2003; 42:801-8. [PMID: 14757212 DOI: 10.1016/j.toxicon.2003.10.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Snake Venom Metalloproteinases (SVMPs) are synthesized as zymogens and undergo proteolytic processing resulting in a variety of multifunctional proteins. Jararhagin is a P-III SVMP, isolated from the venom of Bothrops jararaca, comprising metalloproteinase, disintegrin-like and cysteine-rich domains. The catalytic domain is responsible for the hemorrhagic activity. The disintegrin-like/cysteine-rich domains block alpha2beta1 integrin binding to collagen and apparently enhance the hemorrhagic activity of SVMPs. The relevance of disintegrin-like domain is described in this paper using a series of mouse anti-jararhagin monoclonal antibodies (MAJar 1-7). MAJar 3 was the only antibody able to completely neutralize jararhagin hemorrhagic activity. Neutralization of catalytic activity was partial by incubation with MAJar 1. MAJars 1 and 3 efficiently neutralized jararhagin binding to collagen with IC50 of 330 and 8.4 nM, respectively. MAJars 1 and 3 recognized the C-terminal portion of the disintegrin domain, which is apparently in conformational proximity with the catalytic domain according to additivity tests. These data suggest that disintegrin-like domain epitopes are in close contact with catalytic site or functionally modulate the expression of hemorrhagic activity in SVMPs.
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Affiliation(s)
- Isabelle Tanjoni
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brasil, 1500, CEP 05503-900, São Paulo, SP, Brazil
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Lima C, Bianca Clissa P, Amélia Piran-Soares A, Tanjoni I, Moura-da-Silva AM, Lopes-Ferreira M. Characterisation of local inflammatory response induced by Thalassophryne nattereri fish venom in a mouse model of tissue injury. Toxicon 2003; 42:499-507. [PMID: 14529731 DOI: 10.1016/s0041-0101(03)00228-9] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The Thalassophryne nattereri fish venom induces a severe burning pain, oedema, and necrosis observed both clinically and experimentally. The present study was carried out in order to describe the pattern of local acute inflammatory response after T. nattereri venom injection. Our findings show that the edematogenic response induced by T. nattereri venom in footpad of mice was dose- and time dependent, and remained significantly elevated over 48 h after injection. Analysis of footpad homogenates were tested for the presence of TNF-alpha, IL-1beta and IL-6, and demonstrated augmented levels of these cytokines. Our results showed that the injection of venom developed an inadequate cellular inflammatory response evidenced by poor infiltration of mononuclear cells, preceded by decreased number of these cells in peripheral blood. In contrast, we observed an early intense recruitment of neutrophil to peritoneal cavity, accompanied by a significant decrease in the number of mononuclear cells. A drastic increase in the total amount of cells, mainly in neutrophils, followed by mononuclear cell recruitment was observed 24 h. In addition, we also demonstrated that T. nattereri venom affects the viability of mononuclear cells (J774A1) in culture. We conclude that the scarcity of inflammatory cellular influx into local lesions (intraplantar) induced by T. nattereri venom could be a consequence of an impaired blood flow in venules at injured tissue and cytotoxic effect of the venom on inflammatory cells can contribute to this impairment.
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Affiliation(s)
- Carla Lima
- Department of Pharmacology, Institute of Biomedical Sciences, University of São Paulo, São Paulo, Brazil.
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35
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Moura-da-Silva AM, Della-Casa MS, David AS, Assakura MT, Butera D, Lebrun I, Shannon JD, Serrano SMT, Fox JW. Evidence for heterogeneous forms of the snake venom metalloproteinase jararhagin: a factor contributing to snake venom variability. Arch Biochem Biophys 2003; 409:395-401. [PMID: 12504907 DOI: 10.1016/s0003-9861(02)00598-2] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The reprolysin subfamily of metalloproteinases includes snake venom metalloproteinases (SVMP) and mammalian disintegrin/metalloproteinase. These proteins are synthesized as zymogens and undergo proteolytic processing resulting in a variety of multifunctional proteins. Jararhagin is a P-III SVMP isolated from the venom of Bothrops jararaca. In crude venom, two forms of jararhagin are typically found, full-length jararhagin and jararhagin-C, a proteolytically processed form of jararhagin that is composed of the disintegrin-like and cysteine-rich domains of jararhagin. To better understand the structural and mechanistic bases for these forms of jararhagin in the venom of B. jararaca and the source of venom complexity in general, we have examined the jararhagin forms isolated from venom and the autolysis of isolated jararhagin under the conditions of varying pH, calcium ion concentration, and reducing agents. From our results, jararhagin isolated from venom appears as two forms: a predominant form that is stable to in vitro autolysis and a minor form that is susceptible to autolysis under a variety of conditions including alkaline pH, low calcium ion concentrations, or reducing agent. The autolysis site for production of jararhagin-C from isolated jararhagin was different from that observed for jararhagin-C as isolated from crude venom. Taken together, these data lead us to the conclusion that during the biosynthesis of jararhagin in the venom gland at least three forms are present: one form which is rapidly processed to give rise to jararhagin-C, one form which is resistant to processing in the venom and autolysis in vitro, and one minor form which is susceptible to autolysis under conditions that promote destabilization of its structure. The presence of these different forms of jararhagin contributes to greater structural and functional complexity of the venom and may be a common feature among all snake venoms. The biological and biochemical features in the venom gland responsible for these jararhagin isoforms are currently under investigation.
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Affiliation(s)
- A M Moura-da-Silva
- Laboratório de Imunopatologia, Instituto Butantan, SP 05503-900, São Paulo, Brazil.
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36
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Abstract
Skmel-28 human melanoma cells were treated with jararhagin (Jara), a metalloproteinase disintegrin isolated from Bothrops jararaca snake venom, and Jari (Jara with the catalytic domain inactivated). Following treatments, monolayer cells lost cytoplasmic expansions acquiring round shapes, detached and formed cell clusters in suspension. Cytotoxicity effect of Jari was dramatically increased at concentrations higher than 0.4 microM, whereas cell adhesion responses did not differ significantly between similar concentrations of Jara and Jari. Treated cells were significantly inhibited to adhere to non-coated wells, as to ECM proteins-coated plates. Migration and invasion were also significantly inhibited in vitro. A decreased proliferation rate was observed in toxin-treated cells. Immunofluorescence staining showed a wide distribution of Jari across the cells. Jara treated cells (67.5%) steady bound anti-jara antibodies after 90 min, while Jari treated cells steady bound only after 6h (57.3%), as determined by FACS. Skmel-28 melanoma cells tumorigenicity was evaluated 180 days after s.c. injections in AIRmin mice. A statistically significant decrease in the ability of Jara and Jari treated cells to promote lung metastasis was observed. These results point to the potential use of this toxin as a tool for applied researches in the clinical field.
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Affiliation(s)
- Mário César Corrêa
- Genetics Laboratory, Butantan Institute, Av. Vital Brasil 1500, CEP 05503-900 São Paulo, SP, Brazil
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Costa EP, Clissa PB, Teixeira CFP, Moura-da-Silva AM. Importance of metalloproteinases and macrophages in viper snake envenomation-induced local inflammation. Inflammation 2002; 26:13-7. [PMID: 11936751 DOI: 10.1023/a:1014465611487] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
The inflammatory action of jararhagin, a hemorrhagic metalloproteinase from Bothrops jararaca venom, was studied in mice using dorsal air pouches. The injection of the toxin in 6-day-old air pouches resulted in a leukocyte accumulation comparable to that induced by LPS and whole venom. Polymorphonuclear and mononuclear cells were present in this infiltrate, with a predominance of neutrophils. Treatment of jararhagin with 1,10-phenantroline abolished its proteolytic activity and reduced the pro-inflammatory effect in approximately 50%. Cell influx was not observed when jararhagin was injected into 1-hr air pouches devoid of macrophages, except when it was injected together with 10(6) syngeneic peritoneal macrophages. Supernatants of macrophages stimulated in vitro with jararhagin did not induce leukocyte influx in 1-hr air pouches; the influx occurred after injection of the pellets of stimulated cultures. In summary, jararhagin is an important pro-inflammatory component of B. jararaca venom, and its activity is dependent upon the proteolytic activity and the presence of macrophages.
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Affiliation(s)
- E P Costa
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo, Brazil
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Clissa PB, Laing GD, Theakston RD, Mota I, Taylor MJ, Moura-da-Silva AM. The effect of jararhagin, a metalloproteinase from Bothrops jararaca venom, on pro-inflammatory cytokines released by murine peritoneal adherent cells. Toxicon 2001; 39:1567-73. [PMID: 11478964 DOI: 10.1016/s0041-0101(01)00131-3] [Citation(s) in RCA: 70] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
The release of pro-inflammatory cytokines (IL-1beta, IL-6 and TNF-alpha) from murine peritoneal adherent cells (MPAC) was studied after exposure to jararhagin, a metalloproteinase/disintegrin isolated from Bothrops jararaca venom. MPACs were treated with LPS (lipopolysaccharide), jararhagin, or EDTA-inactivated jararhagin for up to 24h. Following incubation, the culture supernatant was assayed by ELISA for the presence of cytokines, while the cells were analysed for viability and cytokine mRNA expression. The cells exposed to native jararhagin released TNF-alpha and IL-1beta after 4 and 24h respectively. When MPACs were exposed to Jararhagin treated with EDTA, TNF-alpha and IL-1beta production was sustained throughout the culture period and IL-6 production was observed. TNF-alpha, IL-6 and IL-1beta mRNA were detected 4h after stimulation with either native or EDTA-treated jararhagin. Addition of jararhagin to LPS stimulated cells resulted in a dramatic decrease in the release of IL-6 and TNF-alpha. RT-PCR showed that this inhibition does not occur at the transcriptional level and further experiments showed that jararhagin degraded soluble cytokines by proteolytic activity. This study suggests that jararhagin induces TNF-alpha, IL-1beta and IL-6 expression, which may be rapidly degraded by its proteolytic activity.
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Affiliation(s)
- P B Clissa
- Laboratório de Imunopatologia, Instituto Butantan, Av. Vital Brasil, 1500, Butantan. CEP: 05503-900, São Paulo, Brazil.
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Souza DH, Selistre-de-Araujo HS, Moura-da-Silva AM, Della-Casa MS, Oliva G, Garratt RC. Crystallization and preliminary X-ray analysis of jararhagin, a metalloproteinase/disintegrin from Bothrops jararaca snake venom. Acta Crystallogr D Biol Crystallogr 2001; 57:1135-7. [PMID: 11468397 DOI: 10.1107/s090744490100614x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/19/2001] [Accepted: 04/10/2001] [Indexed: 11/10/2022]
Abstract
Jararhagin is a toxic protein, isolated from the venom of the snake Bothrops jararaca, which is composed of a metalloprotease domain coupled to a disintegrin/cysteine-rich domain. It induces local haemorrhage owing to the proteolytic digestion of the basement membrane of capillaries. Jararhagin also cleaves the alpha(2)beta(1) integrin on the surface of platelets, thereby acting as a potent inhibitor of collagen-induced platelet aggregation. Crystals of jararhagin were obtained by the vapour-diffusion technique at 273 K in 200 mM sodium acetate, 100 mM cacodylate buffer pH 6.5 and 30% PEG 8000. Diffraction data have been obtained to a resolution of 2.8 A from a single frozen crystal, which belonged to space group P2(1)2(1)2(1) with unit-cell parameters a = 73.7, b = 100.3, c = 133.4 A. The asymmetric unit contains two jararhagin molecules and has a solvent content of 45%. A molecular-replacement solution has been obtained using a homology-built model based on the crystal structure of acutolysin, a haemorrhagic zinc metalloproteinase from the venom of the snake Agkistrodon acutus; attempts are under way to locate the remaining domains.
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Affiliation(s)
- D H Souza
- Departamento de Física e Informática, Instituto de Física de São Carlos, Universidade de São Paulo, Brazil.
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40
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Colombini M, Fernandes I, Cardoso DF, Moura-da-Silva AM. Lachesis muta muta venom: immunological differences compared with Bothrops atrox venom and importance of specific antivenom therapy. Toxicon 2001; 39:711-9. [PMID: 11072051 DOI: 10.1016/s0041-0101(00)00201-4] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lachesis muta muta and Bothrops atrox snakes are responsible for most accidents occurring in the Amazon. The clinical features of the accidents are similar; however, there are still controversies about the efficacy of Bothrops antivenoms for treating L. m. muta accidents. In this work, we evaluated the antigenic cross-reactivity between these venoms using polyclonal and monoclonal antibodies and the efficacy of B. atrox and L. m. muta experimental antivenoms in cross-neutralizing the main toxic activities of each venom. Electrophoretic patterns differed consistently between the species. However, antigenic cross-reactivity was extensive except for a few bands. Several species-specific monoclonal antibodies were obtained by immunization of Balb/c mice with L. m. muta whole venom or B. atrox and L. m. muta specific antigens. The monoclonal antibodies specific to L. m. muta recognized different bands of this venom and the antibodies specific to B. atrox recognized a complex pattern on whole venom by Western blotting. These antibodies are important tools for developing an immunoassay able to discriminate patients bitten by these snakes. The experiments involving cross-neutralization of the main activities of the venoms showed that hemorrhage and blood incoagulability induced by B. atrox venom were similarly neutralized by both B. atrox and L. m. muta antivenoms. However, B. atrox antivenom partially neutralized the hemorrhage and completely failed in neutralizing coagulopathy induced by L. m. muta venom. Therefore, antigenic variation between B. atrox and L. m. muta venoms does occur and the use of specific antivenom is suggested for patients bitten by Lachesis snakes.
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Affiliation(s)
- M Colombini
- Laboratório de Imunopatologia, Instituto Butantan, 05503-900, SP, São Paulo, Brazil
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41
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Moura-da-Silva AM, Marcinkiewicz C, Marcinkiewicz M, Niewiarowski S. Selective recognition of alpha2beta1 integrin by jararhagin, a Metalloproteinase/disintegrin from bBothrops jararaca venom. Thromb Res 2001; 102:153-9. [PMID: 11323026 DOI: 10.1016/s0049-3848(01)00216-x] [Citation(s) in RCA: 43] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Abstract
T. nattereri (niquim) is a venomous fish involved in many human accidents in Brazil. The clinical picture includes mild local erythema, severe edema, intense pain and rapid progression to necrosis. The present therapy with anti-inflammatory and analgesic drugs is ineffective and, therefore, we decided to assess serum therapy as an alternative treatment using an experimental antivenom. The antivenom used was raised in rabbits showing an ELISA antibody titer of 1:8,192,000 and its ability to neutralize lethality, necrosis, nociception and edema was evaluated both by pre-incubating the venom with antivenom before injection into mice or by independent injections of venom and antivenom. Lethality was completely neutralized by pre-incubation (ED(50)=141.5 microl/mg) while necrosis and nociception were neutralized by pre-incubation or the independent injection of antivenom. Edema was only partially prevented even when large amounts of antivenom were used. These data suggest that antivenom may be a promising treatment for patients stung by T. nattereri and suggest the viability of producing a horse antivenom for use in clinical trials.
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Affiliation(s)
- M Lopes-Ferreira
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo, Brazil.
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43
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Fernandes I, Lima EX, Takehara HA, Moura-da-Silva AM, Tanjoni I, Gutiérrez JM. Horse IgG isotypes and cross-neutralization of two snake antivenoms produced in Brazil and Costa Rica. Toxicon 2000; 38:633-44. [PMID: 10673156 DOI: 10.1016/s0041-0101(99)00177-4] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Horse IgG isotypes and cross-neutralization of two snake antivenoms produced in Brazil and Costa Rica. Toxicon 000-000. This work compared the specificity, ELISA titers and IgG subclass content of the polyvalent antivenom (anti-Bothrops asper, Crotalus durissus durissus and Lachesis muta stenophrys) of Instituto Clodomiro Picado (Costa Rica) and the bothropic antivenom (anti-Bothrops jararaca, B. jararacussu, B. moojeni, B. neuwiedi and B. alternatus) of Instituto Butantan (Brazil). The role of IgG(T) and IgGa subclasses in neutralization of some venom toxic activities and the cross neutralization of the antivenoms against B. jararaca and B. asper venoms were also evaluated. Both antivenoms were able to recognize B. asper and B. jararaca venoms by immunoblotting and presented similar antibody titers when assayed by ELISA. IgG(T) was highest, followed by IgGa, IgGb and IgGc. IgGa and IgG(T) isotypes isolated from both antivenoms by affinity chromatography were tested for neutralization of lethal, hemorrhagic, coagulant and phospholipase A2 activities of the homologous venoms. In both antivenoms, IgG(T) was the major isotype responsible for neutralization of all the tested activities, followed by IgGa. These results suggest that Instituto Butantan and Instituto Clodomiro Picado antivenoms have the same IgG profile and their neutralizing ability is due mostly to the IgG(T) isotype. Also, they neutralize lethality in mice induced by homologous and heterologous venoms, the bothropic antivenom of Instituto Butantan being more effective.
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Affiliation(s)
- I Fernandes
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo, Brazil.
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44
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Moura-da-Silva AM, Línica A, Della-Casa MS, Kamiguti AS, Ho PL, Crampton JM, Theakston RD. Jararhagin ECD-containing disintegrin domain: expression in escherichia coli and inhibition of the platelet-collagen interaction. Arch Biochem Biophys 1999; 369:295-301. [PMID: 10486149 DOI: 10.1006/abbi.1999.1372] [Citation(s) in RCA: 53] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Jararhagin, a hemorrhagin from Bothrops jararaca venom, is a soluble snake venom component comprising metalloproteinase and disintegrin cysteine-rich domains and, therefore, is structurally closely related to the membrane-bound A Disintegrin And Metalloproteinase (ADAMs) protein family. Its hemorrhagic activity is associated with the effects of both metalloproteinase and disintegrin domains; the metalloproteinase enzymatically damages the endothelium and the disintegrin domain inhibits platelet-collagen interactions. The expression of whole jararhagin or its disintegrin domain has never been attempted before. The aim of this study was to investigate whether we could express the disintegrin domain of jararhagin and to verify whether this domain displays an inhibitory effect on the platelet-collagen interaction. Therefore, the cDNA fragment coding for the disintegrin plus cysteine-rich domains of jararhagin was cloned into the pET32a vector, used to transform the Escherichia coli AD494(DE3)pLysS strain. The thioredoxin-disintegrin fusion protein was recovered from the soluble extract of the cells, yielding up to 50 mg/liter culture. The fusion protein was isolated using polyhistidine binding resin which resulted in a main band of 45 kDa recognized by anti-native jararhagin antibodies. Antibodies raised in rabbits against the fusion protein had high enzyme-linked immunosorbent assay titers against native jararhagin and detected a band of 52 kDa on Western blots of whole B. jararaca venom demonstrating that these antibodies recognize the parent jararhagin molecule. Treatment of the fusion protein with enterokinase, followed by further capture of the enzyme, resulted in a band of 30 kDa, the expected size for jararhagin-C. Further purification of the cleaved disintegrin using FPLC Mono-Q columns resulted in one fraction capable of efficiently inhibiting collagen-induced platelet aggregation in a dose-dependent manner (IC(50) of 8.5 microg/ml).
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Affiliation(s)
- A M Moura-da-Silva
- Laboratório de Imunopatologia, Laboratório de Biotecnologia Molecular, Instituto Butantan, Av. Vital Brasil, 1500, São Paulo, 05503-900, Brazil.
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45
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Kamiguti AS, Moura-da-Silva AM, Laing GD, Knapp T, Zuzel M, Crampton JM, Theakston RD. Collagen-induced secretion-dependent phase of platelet aggregation is inhibited by the snake venom metalloproteinase jararhagin. Biochim Biophys Acta 1997; 1335:209-17. [PMID: 9133658 DOI: 10.1016/s0304-4165(96)00140-7] [Citation(s) in RCA: 47] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
Jararhagin, a 52 kDa metalloproteinase from Bothrops jararaca snake venom, belongs to the family of enzymes with an N-terminal Zn2+-containing enzymatic domain, a disintegrin-like domain and a cysteine-rich C-terminal domain. Both jararhagin and jararhagin C, a 28 kDa-protein from the same venom identical to the disintegrin-like domain of jararhagin, inhibit collagen-induced platelet aggregation. In this study, jararhagin and synthetic linear peptides based on the disintegrin-like domain of jararhagin overlapping with the RGD sequence of venom disintegrins, were shown for the first time to inhibit the release of 5-hydroxytryptamine (5-HT) from platelets preloaded with [14C]5-HT and stimulated with collagen. The normal phosphorylation of the 21-kDa myosin light chain (p21) in response to the stimulation indicated that jararhagin and the peptides did not interfere with platelet shape change. The selective inhibition of the secretion-dependent phase of the platelet response to collagen by the enzyme and its peptides was confirmed by the defective phosphorylation of pleckstrin, a 47-kDa platelet protein (p47) involved in dense granule secretion.
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Affiliation(s)
- A S Kamiguti
- Department of Haematology, University of Liverpool, Royal Liverpool University Hospital, UK
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46
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Moura-da-Silva AM, Laing GD, Paine MJ, Dennison JM, Politi V, Crampton JM, Theakston RD. Processing of pro-tumor necrosis factor-alpha by venom metalloproteinases: a hypothesis explaining local tissue damage following snake bite. Eur J Immunol 1996; 26:2000-5. [PMID: 8814237 DOI: 10.1002/eji.1830260905] [Citation(s) in RCA: 109] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Venom-induced necrosis is a common local debilitating sequela of bites by many vipers, frequently resulting in severe permanent scarring and deformity. Antivenoms are not effective under these circumstances unless administered within a few minutes of the bite; this is unlikely to occur in the rural tropics where most victims take a long time to reach medical care. We have shown that two venom zinc metalloproteinases (jararhagin from Bothrops jararaca venom and a metalloproteinase from Echis pyramidum leakeyi venom) successfully cleaved the recombinant glutathione-S-transferase-tumor necrosis factor-alpha fusion protein (GST-TNF-alpha) substrate to form biologically active TNF-alpha which was shown to be neutralized by ovine TNF-alpha Fab antibodies. This resulted in a reduction of venom-induced necrosis in mice when injected intravenously or intradermally both before and after intradermal injections of E.p.leakeyi venom. A peptidomimetic (POL 647) was also found to inhibit the Echis metalloproteinase, thus preventing the processing of the TNF precursor; this was shown using a TNF-alpha-sensitive cell culture assay and electrophoresis. These observations demonstrate the possible importance of TNF-alpha in the development of the resulting necrotic lesion and leads to the hypothesis that increased levels of venom metalloproteinases following snake bite release active TNF-alpha. This cytokine may contribute to the local necrosis and also induce the production of endogenous matrix metalloproteinases, which in turn generate a positive feedback mechanism resulting in continued cleavage of pro-TNF-alpha. The results indicate that inhibition or neutralization of endogenous TNF-alpha appears to result in a significant reduction in venom-induced necrosis. This could help to explain the clinical observations that treatment of local necrosis following snake bite by antivenom is only minimally successful.
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47
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Moura-da-Silva AM, Theakston RD, Crampton JM. Evolution of disintegrin cysteine-rich and mammalian matrix-degrading metalloproteinases: gene duplication and divergence of a common ancestor rather than convergent evolution. J Mol Evol 1996; 43:263-9. [PMID: 8703092 DOI: 10.1007/bf02338834] [Citation(s) in RCA: 82] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
The evolution of the Metalloproteinase Disintegrin Cysteine-rich (MDC) gene family and that of the mammalian Matrix-degrading Metalloproteinases (MMPs) are compared. The alignment of snake venom and mammalian MDC and MMP precursor sequences generated a phylogenetic tree that grouped these proteins mainly according to their function. Based on this observation, a common ancestry is suggested for mammalian and snake venom MDCs; it is also possible that gene duplication of the already-assembled domain structure, followed by divergence of the copies, may have significantly contributed to the evolution of the functionally diverse MDC proteins. The data also suggest that the structural resemblance of the zinc-binding motif of venom MDCs and MMPs may best be explained by common ancestry and conservation of the proteolytic motifs during the divergence of the proteins rather than through convergent evolution.
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Affiliation(s)
- A M Moura-da-Silva
- Wolfson Unit of Molecular Genetics, Liverpool School of Tropical Medicine, Liverpool, L3 5QA, UK
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48
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Moura-da-Silva AM, Paine MJ, Diniz MR, Theakston RD, Crampton JM. The molecular cloning of a phospholipase A2 from Bothrops jararacussu snake venom: evolution of venom group II phospholipase A2's may imply gene duplications. J Mol Evol 1995; 41:174-9. [PMID: 7666446 DOI: 10.1007/bf00170670] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The sequence coding for a snake venom phospholipase A2 (PLA2), BJUPLA2, has been cloned from a Bothrops jararacussu venom gland cDNA library. The cDNA sequence predicts a precursor containing a 16-residue signal peptide followed by a molecule of 122 amino acid residues with a strong sequence similarity to group II snake venom PLA2's. A striking feature of the cDNA is the high sequence conservation of the 5' and 3' untranslated regions in cDNAs coding for PLA2's from a number of viper species. The greatest sequence variation was observed between the regions coding for the mature proteins, with most substitutions occurring in nonsynonymous sites. The phylogenetic tree constructed by alignment of the amino acid sequence of BJUPLA2 with group II PLA2's in general groups them according to current taxonomical divisions and/or functional activity. It also suggests that gene duplications may have occurred at a number of different points during the evolution of snake venom group II PLA2's.
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Affiliation(s)
- A M Moura-da-Silva
- Wolfson Unit of Molecular Genetics, Liverpool School of Tropical Medicine, UK
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Paine MJ, Moura-da-Silva AM, Theakston RD, Crampton JM. Cloning of metalloprotease genes in the carpet viper (Echis pyramidum leakeyi). Further members of the metalloprotease/disintegrin gene family. Eur J Biochem 1994; 224:483-8. [PMID: 7925363 DOI: 10.1111/j.1432-1033.1994.00483.x] [Citation(s) in RCA: 44] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
The genes coding for two metalloproteases, EcH-I and EcH-II, have been cloned from an Echis pyramidum leakeyi venom gland cDNA library. The cDNA sequences predict two zymogen molecules with strong amino acid sequence similarity and the same domain structure present in other members of the viper metalloprotease/disintegrin gene family. EcH-I and EcH-II contain pro-protein, enzyme and disintegrin domains. Analysis of the cDNAs coding for EcH-I, EcH-II, jararhagin, trigramin and Ht-e reveals a strong similarity, particularly in the untranslated regions and regions coding for the pro-peptide. Comparison of EcH-I and EcH-II with venom metalloproteases, mammalian matrix-degrading metalloproteases, sperm proteins, and a potential tumour suppressor gene highlights the presence of a number of motifs with potential functional significance.
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Affiliation(s)
- M J Paine
- Snake Venom Research Unit, Liverpool School of Tropical Medicine, England
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Cardoso DF, Moura-da-Silva AM, Mota I. Suppression of the antivenom antibody response by serum therapy. Braz J Med Biol Res 1994; 27:33-41. [PMID: 7513588] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
1. The antivenom antibody response of mice injected with Bothrops jararaca venom and receiving specific serum therapy was studied under different experimental conditions. Balb/c mice (18-22 g) injected with venom (1.75 mg/kg) presented the clinical symptoms observed in patients bitten by B. jararaca and a high and long-lasting antivenom antibody response. 2. Injection of 0.1 ml of horse antiserum to venom 15 min after venom administration abolished the symptoms induced by the venom and induced an almost completely suppressed production of mouse antivenom antibodies. The extent of suppression of the antivenom antibody response depended on the dose of horse antiserum administered and was greater the sooner the serum therapy was applied after envenomation. 3. Injection of antiserum into envenomed mice that received an unrelated antigen (KLH) did not suppress the antibody response to KLH antigen though it inhibited production of antivenom antibodies. 4. Envenomed mice receiving an equivalent dose of F(ab')2 fragments obtained by pepsin digestion of horse antiserum presented the same extent of suppression of the antivenom antibody response as mice injected with the non-treated antiserum. 5. Mice whose antibody response was suppressed, when rechallenged with venom, presented a primary antibody response. 6. These results suggest that suppression of the antivenom antibody response presented by envenomed patients submitted to serum therapy is due to the masking of the venom epitopes by horse antibodies as well as to the rapid elimination of the venom epitopes.
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Affiliation(s)
- D F Cardoso
- Laboratório de Imunopatologia, Instituto Butantan, São Paulo, Brasil
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