New insights in novel Escherichia coli colistin resistant strains isolated from Argentina

Autores
Maturana, Patricia del Valle; Martinez, Melina; Faccone, Diego Francisco; Semorile, Liliana Carmen; Maffia, Paulo Cesar; Hollmann, Axel
Año de publicación
2020
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Colistin is a polymyxin antibiotic (polymyxin E) that has in recent years re-emerged as an option for treatment of multidrug-resistant bacteria. Recently, the re-introduction of colistin resulted in the appearance of colistin-resistant bacteria, which is usually caused by LPS modifications. The fact that this modification is mediated by a plasmid carrying the mcr-1 gene, implies a horizontal transfer of colistin resistance. In Argentina, the National Reference Laboratory in Antimicrobial Resistance (NRLAR), has recently screened several bacteria for the MCR-1 plasmid, detecting nine Escherichia coli isolates carrying the plasmid with the mcr-1 gene, among others. In this context, we proposed to assess the effect of surface charge modifications induced by the plasmid MCR-1 and its impact on the resulting colistin resistance in two clinical isolates of colistin-resistant E. coli. Using zeta potential assays, we confirmed the reduction of negative charge exposure on clinical isolates compared to the reference strain of E. coli. In addition, through permeabilization assays, we were able to correlate this reduction in charge exposure with the extent of damage to the bacterial membrane. The fact that this surface charge modification through substitution of lipid A is plasmid encoded, represents an important concern for future antimicrobial peptide drug development.
Fil: Maturana, Patricia del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Centro de Investigación en Biofísica Aplicada y Alimentos. - Universidad Nacional de Santiago del Estero. Centro de Investigación en Biofísica Aplicada y Alimentos; Argentina
Fil: Martinez, Melina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; Argentina
Fil: Faccone, Diego Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Dirección Nacional de Instituto de Investigación. Administración Nacional de Laboratorio e Instituto de Salud "Dr. C. G. Malbrán"; Argentina
Fil: Semorile, Liliana Carmen. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; Argentina
Fil: Maffia, Paulo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; Argentina
Fil: Hollmann, Axel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Centro de Investigación en Biofísica Aplicada y Alimentos. - Universidad Nacional de Santiago del Estero. Centro de Investigación en Biofísica Aplicada y Alimentos; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; Argentina
Materia
COLISTIN
MEMBRANE PERMEABILITY
POTENTIAL ZETA
RESISTANCE
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/144331
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/144331
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling New insights in novel Escherichia coli colistin resistant strains isolated from ArgentinaMaturana, Patricia del ValleMartinez, MelinaFaccone, Diego FranciscoSemorile, Liliana CarmenMaffia, Paulo CesarHollmann, AxelCOLISTINMEMBRANE PERMEABILITYPOTENTIAL ZETARESISTANCEhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Colistin is a polymyxin antibiotic (polymyxin E) that has in recent years re-emerged as an option for treatment of multidrug-resistant bacteria. Recently, the re-introduction of colistin resulted in the appearance of colistin-resistant bacteria, which is usually caused by LPS modifications. The fact that this modification is mediated by a plasmid carrying the mcr-1 gene, implies a horizontal transfer of colistin resistance. In Argentina, the National Reference Laboratory in Antimicrobial Resistance (NRLAR), has recently screened several bacteria for the MCR-1 plasmid, detecting nine Escherichia coli isolates carrying the plasmid with the mcr-1 gene, among others. In this context, we proposed to assess the effect of surface charge modifications induced by the plasmid MCR-1 and its impact on the resulting colistin resistance in two clinical isolates of colistin-resistant E. coli. Using zeta potential assays, we confirmed the reduction of negative charge exposure on clinical isolates compared to the reference strain of E. coli. In addition, through permeabilization assays, we were able to correlate this reduction in charge exposure with the extent of damage to the bacterial membrane. The fact that this surface charge modification through substitution of lipid A is plasmid encoded, represents an important concern for future antimicrobial peptide drug development.Fil: Maturana, Patricia del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Centro de Investigación en Biofísica Aplicada y Alimentos. - Universidad Nacional de Santiago del Estero. Centro de Investigación en Biofísica Aplicada y Alimentos; ArgentinaFil: Martinez, Melina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; ArgentinaFil: Faccone, Diego Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Dirección Nacional de Instituto de Investigación. Administración Nacional de Laboratorio e Instituto de Salud "Dr. C. G. Malbrán"; ArgentinaFil: Semorile, Liliana Carmen. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; ArgentinaFil: Maffia, Paulo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; ArgentinaFil: Hollmann, Axel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Centro de Investigación en Biofísica Aplicada y Alimentos. - Universidad Nacional de Santiago del Estero. Centro de Investigación en Biofísica Aplicada y Alimentos; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; ArgentinaSpringer2020-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/144331Maturana, Patricia del Valle; Martinez, Melina; Faccone, Diego Francisco; Semorile, Liliana Carmen; Maffia, Paulo Cesar; et al.; New insights in novel Escherichia coli colistin resistant strains isolated from Argentina; Springer; European Biophysics Journal With Biophysics Letters; 49; 3-4; 5-2020; 307-3130175-7571CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://www.springer.com/journal/249info:eu-repo/semantics/altIdentifier/doi/10.1007/s00249-020-01436-xinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:26:09Zoai:ri.conicet.gov.ar:11336/144331instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:26:10.005CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv New insights in novel Escherichia coli colistin resistant strains isolated from Argentina
title New insights in novel Escherichia coli colistin resistant strains isolated from Argentina
spellingShingle New insights in novel Escherichia coli colistin resistant strains isolated from Argentina
Maturana, Patricia del Valle
COLISTIN
MEMBRANE PERMEABILITY
POTENTIAL ZETA
RESISTANCE
title_short New insights in novel Escherichia coli colistin resistant strains isolated from Argentina
title_full New insights in novel Escherichia coli colistin resistant strains isolated from Argentina
title_fullStr New insights in novel Escherichia coli colistin resistant strains isolated from Argentina
title_full_unstemmed New insights in novel Escherichia coli colistin resistant strains isolated from Argentina
title_sort New insights in novel Escherichia coli colistin resistant strains isolated from Argentina
dc.creator.none.fl_str_mv Maturana, Patricia del Valle
Martinez, Melina
Faccone, Diego Francisco
Semorile, Liliana Carmen
Maffia, Paulo Cesar
Hollmann, Axel
author Maturana, Patricia del Valle
author_facet Maturana, Patricia del Valle
Martinez, Melina
Faccone, Diego Francisco
Semorile, Liliana Carmen
Maffia, Paulo Cesar
Hollmann, Axel
author_role author
author2 Martinez, Melina
Faccone, Diego Francisco
Semorile, Liliana Carmen
Maffia, Paulo Cesar
Hollmann, Axel
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv COLISTIN
MEMBRANE PERMEABILITY
POTENTIAL ZETA
RESISTANCE
topic COLISTIN
MEMBRANE PERMEABILITY
POTENTIAL ZETA
RESISTANCE
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Colistin is a polymyxin antibiotic (polymyxin E) that has in recent years re-emerged as an option for treatment of multidrug-resistant bacteria. Recently, the re-introduction of colistin resulted in the appearance of colistin-resistant bacteria, which is usually caused by LPS modifications. The fact that this modification is mediated by a plasmid carrying the mcr-1 gene, implies a horizontal transfer of colistin resistance. In Argentina, the National Reference Laboratory in Antimicrobial Resistance (NRLAR), has recently screened several bacteria for the MCR-1 plasmid, detecting nine Escherichia coli isolates carrying the plasmid with the mcr-1 gene, among others. In this context, we proposed to assess the effect of surface charge modifications induced by the plasmid MCR-1 and its impact on the resulting colistin resistance in two clinical isolates of colistin-resistant E. coli. Using zeta potential assays, we confirmed the reduction of negative charge exposure on clinical isolates compared to the reference strain of E. coli. In addition, through permeabilization assays, we were able to correlate this reduction in charge exposure with the extent of damage to the bacterial membrane. The fact that this surface charge modification through substitution of lipid A is plasmid encoded, represents an important concern for future antimicrobial peptide drug development.
Fil: Maturana, Patricia del Valle. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Centro de Investigación en Biofísica Aplicada y Alimentos. - Universidad Nacional de Santiago del Estero. Centro de Investigación en Biofísica Aplicada y Alimentos; Argentina
Fil: Martinez, Melina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; Argentina
Fil: Faccone, Diego Francisco. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Dirección Nacional de Instituto de Investigación. Administración Nacional de Laboratorio e Instituto de Salud "Dr. C. G. Malbrán"; Argentina
Fil: Semorile, Liliana Carmen. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; Argentina
Fil: Maffia, Paulo Cesar. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; Argentina
Fil: Hollmann, Axel. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet Noa Sur. Centro de Investigación en Biofísica Aplicada y Alimentos. - Universidad Nacional de Santiago del Estero. Centro de Investigación en Biofísica Aplicada y Alimentos; Argentina. Universidad Nacional de Quilmes. Departamento de Ciencia y Tecnología. Laboratorio de Microbiología Molecular; Argentina
description Colistin is a polymyxin antibiotic (polymyxin E) that has in recent years re-emerged as an option for treatment of multidrug-resistant bacteria. Recently, the re-introduction of colistin resulted in the appearance of colistin-resistant bacteria, which is usually caused by LPS modifications. The fact that this modification is mediated by a plasmid carrying the mcr-1 gene, implies a horizontal transfer of colistin resistance. In Argentina, the National Reference Laboratory in Antimicrobial Resistance (NRLAR), has recently screened several bacteria for the MCR-1 plasmid, detecting nine Escherichia coli isolates carrying the plasmid with the mcr-1 gene, among others. In this context, we proposed to assess the effect of surface charge modifications induced by the plasmid MCR-1 and its impact on the resulting colistin resistance in two clinical isolates of colistin-resistant E. coli. Using zeta potential assays, we confirmed the reduction of negative charge exposure on clinical isolates compared to the reference strain of E. coli. In addition, through permeabilization assays, we were able to correlate this reduction in charge exposure with the extent of damage to the bacterial membrane. The fact that this surface charge modification through substitution of lipid A is plasmid encoded, represents an important concern for future antimicrobial peptide drug development.
publishDate 2020
dc.date.none.fl_str_mv 2020-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/144331
Maturana, Patricia del Valle; Martinez, Melina; Faccone, Diego Francisco; Semorile, Liliana Carmen; Maffia, Paulo Cesar; et al.; New insights in novel Escherichia coli colistin resistant strains isolated from Argentina; Springer; European Biophysics Journal With Biophysics Letters; 49; 3-4; 5-2020; 307-313
0175-7571
CONICET Digital
CONICET
url http://hdl.handle.net/11336/144331
identifier_str_mv Maturana, Patricia del Valle; Martinez, Melina; Faccone, Diego Francisco; Semorile, Liliana Carmen; Maffia, Paulo Cesar; et al.; New insights in novel Escherichia coli colistin resistant strains isolated from Argentina; Springer; European Biophysics Journal With Biophysics Letters; 49; 3-4; 5-2020; 307-313
0175-7571
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://www.springer.com/journal/249
info:eu-repo/semantics/altIdentifier/doi/10.1007/s00249-020-01436-x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Springer
publisher.none.fl_str_mv Springer
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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