Mechanistic Insights into the Leishmanicidal and Bactericidal Activities of Batroxicidin, a Cathelicidin-Related Peptide from a South American Viper (Bothrops atrox)Click to copy article linkArticle link copied!
- Anderson DemateiAnderson DemateiCenter for Tropical Medicine, NMT, Faculty of Medicine, University of Brasilia, Brasília 70910-900, BrazilResearch Center in Morphology and Applied Immunology, NuPMIA, Faculty of Medicine, University of Brasilia, Brasília 70910-900, BrazilMore by Anderson Dematei
- João B. NunesJoão B. NunesResearch Center in Morphology and Applied Immunology, NuPMIA, Faculty of Medicine, University of Brasilia, Brasília 70910-900, BrazilLaboratory for the Synthesis and Analysis of Biomolecules, LSAB, Institute of Chemistry, University of Brasilia, Brasília 70910-900, BrazilMore by João B. Nunes
- Daniel C. MoreiraDaniel C. MoreiraResearch Center in Morphology and Applied Immunology, NuPMIA, Faculty of Medicine, University of Brasilia, Brasília 70910-900, BrazilMore by Daniel C. Moreira
- Jéssica A. JesusJéssica A. JesusInstitute of Biosciences, São Paulo State University, São Paulo, BrazilMore by Jéssica A. Jesus
- Márcia D. LaurentiMárcia D. LaurentiDepartment of Pathology, Laboratory of Pathology of Infectious Diseases, Faculty of Medicine, University of São Paulo, São Paulo 05508-060, BrazilMore by Márcia D. Laurenti
- Ana C. A. MengardaAna C. A. MengardaResearch Center on Neglected Diseases, NPDN, University of Guarulhos, Guarulhos 07023-070, BrazilMore by Ana C. A. Mengarda
- Maria Silva VieiraMaria Silva VieiraI3S, Institute of Research and Innovation in Health, University of Porto, Porto 4099-002, PortugalIBMC, Institute of Molecular and Cellular Biology, University of Porto, Porto 4099-002, PortugalMore by Maria Silva Vieira
- Constança Pais do AmaralConstança Pais do AmaralInstituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, PortugalMore by Constança Pais do Amaral
- Marco M. DominguesMarco M. DominguesInstituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, PortugalMore by Marco M. Domingues
- Josué de MoraesJosué de MoraesResearch Center on Neglected Diseases, NPDN, University of Guarulhos, Guarulhos 07023-070, BrazilMore by Josué de Moraes
- Luiz F. D. PasseroLuiz F. D. PasseroInstitute of Biosciences, São Paulo State University, São Paulo, BrazilDepartment of Pathology, Laboratory of Pathology of Infectious Diseases, Faculty of Medicine, University of São Paulo, São Paulo 05508-060, BrazilMore by Luiz F. D. Passero
- Guilherme BrandGuilherme BrandLaboratory for the Synthesis and Analysis of Biomolecules, LSAB, Institute of Chemistry, University of Brasilia, Brasília 70910-900, BrazilMore by Guilherme Brand
- Lucinda J. BessaLucinda J. BessaLAQV/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences of the University of Porto, Porto 4099-002, PortugalMore by Lucinda J. Bessa
- Reinhard WimmerReinhard WimmerDepartment of Chemistry and Bioscience, Aalborg University, Aalborg 9220, DenmarkMore by Reinhard Wimmer
- Selma A. S. KuckelhausSelma A. S. KuckelhausResearch Center in Morphology and Applied Immunology, NuPMIA, Faculty of Medicine, University of Brasilia, Brasília 70910-900, BrazilMore by Selma A. S. Kuckelhaus
- Ana M. TomásAna M. TomásI3S, Institute of Research and Innovation in Health, University of Porto, Porto 4099-002, PortugalIBMC, Institute of Molecular and Cellular Biology, University of Porto, Porto 4099-002, PortugalICBAS, Abel Salazar Institute for Biomedical Research, University of Porto, Porto 4099-002, PortugalMore by Ana M. Tomás
- Nuno C. SantosNuno C. SantosInstituto de Medicina Molecular, Faculdade de Medicina, Universidade de Lisboa, 1649-028 Lisbon, PortugalMore by Nuno C. Santos
- Alexandra PlácidoAlexandra PlácidoLAQV/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences of the University of Porto, Porto 4099-002, PortugalMore by Alexandra Plácido
- Peter EatonPeter EatonLAQV/REQUIMTE, Department of Chemistry and Biochemistry, Faculty of Sciences of the University of Porto, Porto 4099-002, PortugalThe Bridge, Joseph Banks Laboratories, School of Chemistry, University of Lincoln, Lincoln LN6 7TS, U.K.More by Peter Eaton
- José Roberto S. A. Leite*José Roberto S. A. Leite*Phone: +556131071891. E-mail: [email protected]; [email protected]Center for Tropical Medicine, NMT, Faculty of Medicine, University of Brasilia, Brasília 70910-900, BrazilResearch Center in Morphology and Applied Immunology, NuPMIA, Faculty of Medicine, University of Brasilia, Brasília 70910-900, BrazilMore by José Roberto S. A. Leite
Abstract

Snake venoms are important sources of bioactive molecules, including those with antiparasitic activity. Cathelicidins form a class of such molecules, which are produced by a variety of organisms. Batroxicidin (BatxC) is a cathelicidin found in the venom of the common lancehead (Bothrops atrox). In the present work, BatxC and two synthetic analogues, BatxC(C-2.15Phe) and BatxC(C-2.14Phe)des-Phe1, were assessed for their microbicidal activity. All three peptides showed a broad-spectrum activity on Gram-positive and -negative bacteria, as well as promastigote and amastigote forms of Leishmania (Leishmania) amazonensis. Circular dichroism (CD) and nuclear magnetic resonance (NMR) data indicated that the three peptides changed their structure upon interaction with membranes. Biomimetic membrane model studies demonstrated that the peptides exert a permeabilization effect in prokaryotic membranes, leading to cell morphology distortion, which was confirmed by atomic force microscopy (AFM). The molecules considered in this work exhibited bactericidal and leishmanicidal activity at low concentrations, with the AFM data suggesting membrane pore formation as their mechanism of action. These peptides stand as valuable prototype drugs to be further investigated and eventually used to treat bacterial and protozoal infections.
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