Antimicrobial peptides isolated from Phyllomedusa nordestina (Amphibia) alter the permeability of plasma membrane of Leishmania and Trypanosoma cruzi

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dc.contributor Sistema FMUSP-HC: Faculdade de Medicina da Universidade de São Paulo (FMUSP) e Hospital das Clínicas da FMUSP
dc.contributor.author PINTO, Erika Gracielle FMUSP-HC
PIMENTA, Daniel C.
ANTONIAZZI, Marta Maria
JARED, Carlos
TEMPONE, Andre Gustavo
dc.date.issued 2013
dc.identifier.citation EXPERIMENTAL PARASITOLOGY, v.135, n.4, p.655-660, 2013
dc.identifier.issn 0014-4894
dc.identifier.uri http://observatorio.fm.usp.br/handle/OPI/4650
dc.description.abstract Nature has provided inspiration for Drug Discovery studies and amphibian secretions have been used as a promising source of effective peptides which could be explored as novel drug prototypes for neglected parasitic diseases as Leishmaniasis and Chagas disease. In this study, we isolated four antimicrobial peptides (AMPS) from Phyllomedusa nordestina secretion, and studied their effectiveness against Leishmania (L) infantum and Trypanosoma cruzi. The antiparasitic fractions were characterized by mass spectrometry and Edman degradation, leading to the identification of dermaseptins 1 and 4 and phylloseptins 7 and 8. T. cruzi trypomastigotes were susceptible to peptides, showing IC50 values in the range concentration of 0.25-0.68 mu M. Leishmania (L.) infantum showed susceptibility to phylloseptin 7, presenting an IC50 value of 10 mu M. Except for phylloseptin 7 which moderate showed cytotoxicity (IC50 (=) 34 mu M), the peptides induced no cellular damage to mammalian cells. The lack of rnitochondrial oxidative activity of parasites detected by the MTT assay, suggested that peptides were leishmanicidal and trypanocidal. By using the fluorescent probe SYTOX (R) Green, dermaseptins 1 and 4 and phylloseptins 7 and 8 showed time-dependent plasma membrane permeabilization of T. cruzi; phylloseptin 7 also showed a similar effect in Leishmania parasites. The present study demonstrates for the first time that AMPs target the plasma membrane of Leishmania and T. cruzi, leading to cellular death. Considering the potential of amphibian peptides against protozoan parasites and the reduced mammalian toxicity, they may contribute as scaffolds for drug design studies.
dc.description.sponsorship · Sao Paulo Research Foundation (FAPESP) [2008/09260-7]
· FAPESP [FAPESP 2009/12236-3]
· Conselho Nacional de Pesquisa e Desenvolvimento (CNPq)
dc.language.iso eng
dc.publisher ACADEMIC PRESS INC ELSEVIER SCIENCE
dc.relation.ispartof Experimental Parasitology
dc.rights restrictedAccess
dc.subject Leishmania; Trypanosome cruzi; Peptides; Phylloseptin; Drugs
dc.subject.other in-vitro; visceral leishmaniasis; dermaseptin; skin; miltefosine; secretion; toxicity
dc.title Antimicrobial peptides isolated from Phyllomedusa nordestina (Amphibia) alter the permeability of plasma membrane of Leishmania and Trypanosoma cruzi
dc.type article
dc.rights.holder Copyright ACADEMIC PRESS INC ELSEVIER SCIENCE
dc.identifier.doi 10.1016/j.exppara.2013.09.016
dc.identifier.pmid 24113627
dc.type.category original article
dc.type.version publishedVersion
hcfmusp.author PINTO, Erika Gracielle:IMT:
hcfmusp.author.external · PIMENTA, Daniel C.:Inst Butantan, Lab Bioquim & Biofis, BR-05503900 Sao Paulo, Brazil
· ANTONIAZZI, Marta Maria:Inst Butantan, Lab Biol Ceular, BR-05503900 Sao Paulo, Brazil
· JARED, Carlos:Inst Butantan, Lab Biol Ceular, BR-05503900 Sao Paulo, Brazil
· TEMPONE, Andre Gustavo:Adolfo Lutz Inst, Dept Parasitol, BR-01246000 Sao Paulo, Brazil
hcfmusp.origem.id 2-s2.0-84886232805
hcfmusp.origem.id WOS:000328236900001
hcfmusp.publisher.city SAN DIEGO
hcfmusp.publisher.country USA
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dc.description.index MEDLINE
hcfmusp.citation.scopus 20
hcfmusp.citation.wos 22
hcfmusp.affiliation.country Brasil


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