Impacto de la diversificación de variantes del SARS-CoV-2 durante la pandemia de COVID-19 en Colombia frente al escape de anticuerpos neutralizantes generados por inmunidad natural y vacunal

ilustraciones, diagramas

Autores:
Álvarez Díaz, Diego Alejandro
Tipo de recurso:
Doctoral thesis
Fecha de publicación:
2023
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/84273
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/84273
https://repositorio.unal.edu.co/
Palabra clave:
570 - Biología::576 - Genética y evolución
610 - Medicina y salud::616 - Enfermedades
610 - Medicina y salud::615 - Farmacología y terapéutica
Vacunas contra la COVID-19
COVID-19 Vaccines
INMUNIDAD
Immunity
COVID-19
SARS-CoV-2
Variant of interest
Variant of Concern
Neutralizing antibodies
Vaccines
Genomic surveillance
Variantes de interés
Variantes de preocupación
Anticuerpos neutralizantes
Vacunas
Vigilancia genómica
Rights
openAccess
License
Reconocimiento 4.0 Internacional
id UNACIONAL2_34b74a3816bff384c8a9a3812803c93e
oai_identifier_str oai:repositorio.unal.edu.co:unal/84273
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv Impacto de la diversificación de variantes del SARS-CoV-2 durante la pandemia de COVID-19 en Colombia frente al escape de anticuerpos neutralizantes generados por inmunidad natural y vacunal
dc.title.translated.eng.fl_str_mv Impact of the diversification of SARS-CoV-2 variants during the COVID-19 pandemic in Colombia against the escape of neutralizing antibodies generated by natural and vaccine immunity
title Impacto de la diversificación de variantes del SARS-CoV-2 durante la pandemia de COVID-19 en Colombia frente al escape de anticuerpos neutralizantes generados por inmunidad natural y vacunal
spellingShingle Impacto de la diversificación de variantes del SARS-CoV-2 durante la pandemia de COVID-19 en Colombia frente al escape de anticuerpos neutralizantes generados por inmunidad natural y vacunal
570 - Biología::576 - Genética y evolución
610 - Medicina y salud::616 - Enfermedades
610 - Medicina y salud::615 - Farmacología y terapéutica
Vacunas contra la COVID-19
COVID-19 Vaccines
INMUNIDAD
Immunity
COVID-19
SARS-CoV-2
Variant of interest
Variant of Concern
Neutralizing antibodies
Vaccines
Genomic surveillance
Variantes de interés
Variantes de preocupación
Anticuerpos neutralizantes
Vacunas
Vigilancia genómica
title_short Impacto de la diversificación de variantes del SARS-CoV-2 durante la pandemia de COVID-19 en Colombia frente al escape de anticuerpos neutralizantes generados por inmunidad natural y vacunal
title_full Impacto de la diversificación de variantes del SARS-CoV-2 durante la pandemia de COVID-19 en Colombia frente al escape de anticuerpos neutralizantes generados por inmunidad natural y vacunal
title_fullStr Impacto de la diversificación de variantes del SARS-CoV-2 durante la pandemia de COVID-19 en Colombia frente al escape de anticuerpos neutralizantes generados por inmunidad natural y vacunal
title_full_unstemmed Impacto de la diversificación de variantes del SARS-CoV-2 durante la pandemia de COVID-19 en Colombia frente al escape de anticuerpos neutralizantes generados por inmunidad natural y vacunal
title_sort Impacto de la diversificación de variantes del SARS-CoV-2 durante la pandemia de COVID-19 en Colombia frente al escape de anticuerpos neutralizantes generados por inmunidad natural y vacunal
dc.creator.fl_str_mv Álvarez Díaz, Diego Alejandro
dc.contributor.advisor.none.fl_str_mv Torres Fernandez, Orlando
Castellanos Parra, Jaime Eduardo
dc.contributor.author.none.fl_str_mv Álvarez Díaz, Diego Alejandro
dc.contributor.researchgroup.spa.fl_str_mv Genómica de Microorganismos Emergentes - Instituto Nacional de Salud
dc.contributor.orcid.spa.fl_str_mv Diego Alejandro Alvarez-Diaz [0000000265340079]
dc.contributor.cvlac.spa.fl_str_mv ALVAREZ DIAZ, DIEGO ALEJANDRO [0000944122#]
dc.contributor.researchgate.spa.fl_str_mv Diego Alejandro Alvarez Díaz [Diego-Alvarez-Diaz-2]
dc.contributor.googlescholar.spa.fl_str_mv Diego Alejandro Álvarez-Díaz [ApWpYpwAAAAJ]
dc.subject.ddc.spa.fl_str_mv 570 - Biología::576 - Genética y evolución
610 - Medicina y salud::616 - Enfermedades
610 - Medicina y salud::615 - Farmacología y terapéutica
topic 570 - Biología::576 - Genética y evolución
610 - Medicina y salud::616 - Enfermedades
610 - Medicina y salud::615 - Farmacología y terapéutica
Vacunas contra la COVID-19
COVID-19 Vaccines
INMUNIDAD
Immunity
COVID-19
SARS-CoV-2
Variant of interest
Variant of Concern
Neutralizing antibodies
Vaccines
Genomic surveillance
Variantes de interés
Variantes de preocupación
Anticuerpos neutralizantes
Vacunas
Vigilancia genómica
dc.subject.decs.spa.fl_str_mv Vacunas contra la COVID-19
dc.subject.decs.eng.fl_str_mv COVID-19 Vaccines
dc.subject.lemb.spa.fl_str_mv INMUNIDAD
dc.subject.lemb.eng.fl_str_mv Immunity
dc.subject.proposal.eng.fl_str_mv COVID-19
SARS-CoV-2
Variant of interest
Variant of Concern
Neutralizing antibodies
Vaccines
Genomic surveillance
dc.subject.proposal.spa.fl_str_mv Variantes de interés
Variantes de preocupación
Anticuerpos neutralizantes
Vacunas
Vigilancia genómica
description ilustraciones, diagramas
publishDate 2023
dc.date.accessioned.none.fl_str_mv 2023-07-26T14:06:03Z
dc.date.available.none.fl_str_mv 2023-07-26T14:06:03Z
dc.date.issued.none.fl_str_mv 2023-01-31
dc.type.spa.fl_str_mv Trabajo de grado - Doctorado
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/doctoralThesis
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/acceptedVersion
dc.type.coar.spa.fl_str_mv http://purl.org/coar/resource_type/c_db06
dc.type.content.spa.fl_str_mv Text
dc.type.redcol.spa.fl_str_mv http://purl.org/redcol/resource_type/TD
format http://purl.org/coar/resource_type/c_db06
status_str acceptedVersion
dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/84273
dc.identifier.instname.spa.fl_str_mv Universidad Nacional de Colombia
dc.identifier.reponame.spa.fl_str_mv Repositorio Institucional Universidad Nacional de Colombia
dc.identifier.repourl.spa.fl_str_mv https://repositorio.unal.edu.co/
url https://repositorio.unal.edu.co/handle/unal/84273
https://repositorio.unal.edu.co/
identifier_str_mv Universidad Nacional de Colombia
Repositorio Institucional Universidad Nacional de Colombia
dc.language.iso.spa.fl_str_mv spa
language spa
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spelling Reconocimiento 4.0 Internacionalhttp://creativecommons.org/licenses/by/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Torres Fernandez, Orlandoe16dc861f9663bd84e8880c020e89d8dCastellanos Parra, Jaime Eduardod005422b5147ff1af3f046ffaf4328e6Álvarez Díaz, Diego Alejandro854fcad458386a025995407bc20d1076Genómica de Microorganismos Emergentes - Instituto Nacional de SaludDiego Alejandro Alvarez-Diaz [0000000265340079]ALVAREZ DIAZ, DIEGO ALEJANDRO [0000944122#]Diego Alejandro Alvarez Díaz [Diego-Alvarez-Diaz-2]Diego Alejandro Álvarez-Díaz [ApWpYpwAAAAJ]2023-07-26T14:06:03Z2023-07-26T14:06:03Z2023-01-31https://repositorio.unal.edu.co/handle/unal/84273Universidad Nacional de ColombiaRepositorio Institucional Universidad Nacional de Colombiahttps://repositorio.unal.edu.co/ilustraciones, diagramasLa vigilancia genómica del SARS-CoV-2 en Colombia permitió identificar la importación y emergencia autóctona de variantes de preocupación (VOC) o de interés (VOI) del SARS-CoV-2 con mutaciones asociadas al escape inmunológico o resistencia a la acción de los anticuerpos neutralizantes (nAbs) generados por infección natural o vacunación. Las vacunas contra el COVID-19 autorizadas en Colombia fueron diseñadas antes de la emergencia de las VOC/VOI, por lo que este estudio se enfocó en evaluar la capacidad de las variantes locales para escapar a los nAbs inducidos por la vacunación. Se realizaron aislamientos de linajes del SARS-CoV-2 que circularon durante los años 2020-2022 en Colombia. Se evaluaron las respuestas de los nAbs en individuos convalecientes, individuos no expuestos al SARS-CoV-2 (naïve) con esquemas primarios de CoronaVac, BNT162b2, ChAdOx1 o Ad26.COV2.S, en individuos con refuerzo homólogo, heterólogo e individuos con inmunidad híbrida-heteróloga. Las respuestas de los nAbs se evaluaron mediante ensayos de neutralización y el título medio de neutralización (MN50) se calculó por el método de Reed-Muench. Finalmente, se evaluaron anticuerpos totales IgM/IgG contra los antígenos S1, S2, RBD y contra la proteína N del SARS-CoV-2, en individuos con inmunidad heteróloga e híbrida-heteróloga mediante paneles Luminex. El linaje B.1 con la mutación E484K demostró capacidad moderada de escape a nAbs de sueros convalecientes, mientras que los niveles de nAbs fueron entre 3,3 a 55 veces menores contra Mu, Delta y Ómicron, comparado con B.1.111 y Gamma en individuos naïve con vacunación primaria. Además, las respuestas de los nAbs contra Mu y Ómicron fueron significativamente mayores tras el refuerzo heterólogo comparado con el esquema primario u homólogo. Finalmente, no se observaron diferencias en los niveles de nAbs contra Ómicron y anticuerpos IgG contra la subunidad S1 y el RBD entre individuos con inmunidad heteróloga e híbrida-heteróloga. Los resultados sugieren que el refuerzo heterólogo rescata las respuestas neutralizantes contra VOI/VOCs a niveles comparables con individuos que presentan inmunidad híbrida. (Texto tomado de la fuente)Genomic surveillance of SARS-CoV-2 in Colombia allowed us to identify the importation and autochthonous emergence of variants of concern (VOC) or of interest" (VOI) of SARS-CoV-2 with mutations associated with the escape of neutralizing antibodies (nAbs) generated by natural infection or vaccination Vaccines against COVID-19 authorized in Colombia were designed before the emergence of VOCs/VOIs, so this study sought to assess the ability of local variants to escape vaccination-induced nAbs. Isolations of SARS-CoV-2 lineages circulating in Colombia were performed between 2020 and 2022. The nAbs responses were evaluated in convalescent individuals, individuals with no history of previous SARS-CoV-2 infection (naïve), individuals with primary schemes of CoronaVac, BNT162b2, ChAdOx1, or Ad26.COV2.S, individuals with homologous, heterologous boost, and individuals with hybrid-heterologous immunity. nAbs responses were assessed by neutralization assays and the mean neutralization titer (MN50) was calculated by the Reed-Muench method. Finally, total IgM/IgG antibodies against the S1, S2, RBD, and N antigens of SARS-CoV-2 were evaluated in individuals with heterologous and hybrid-heterologous immunity using Luminex panels. The B.1 lineage with the E484K mutation demonstrated moderate escape capacity to nAbs from convalescent sera, while nAbs levels were 3.3 to 55-fold lower against Mu, Delta, and Omicron, compared to B.1.111 and Gamma in naïve individuals with primary vaccination. In addition, nAb responses against Mu and Omicron were significantly higher after heterologous boost compared to the primary or homologous regimen. Finally, no differences were observed in the levels of nAbs against Omicron and IgG antibodies against the S1 and the RBD antigens between individuals with heterologous and hybrid-heterologous immunity. The results suggest that heterologous boosting rescues neutralizing responses against VOI/VOCs at levels comparable to individuals with hybrid immunity.DoctoradoDoctor en Ciencias - Biología95 páginasapplication/pdfapplication/vnd.ms-excelspaUniversidad Nacional de ColombiaBogotá - Ciencias - Doctorado en Ciencias - BiologíaFacultad de CienciasBogotá, ColombiaUniversidad Nacional de Colombia - Sede Bogotá570 - Biología::576 - Genética y evolución610 - Medicina y salud::616 - Enfermedades610 - Medicina y salud::615 - Farmacología y terapéuticaVacunas contra la COVID-19COVID-19 VaccinesINMUNIDADImmunityCOVID-19SARS-CoV-2Variant of interestVariant of ConcernNeutralizing antibodiesVaccinesGenomic surveillanceVariantes de interésVariantes de preocupaciónAnticuerpos neutralizantesVacunasVigilancia genómicaImpacto de la diversificación de variantes del SARS-CoV-2 durante la pandemia de COVID-19 en Colombia frente al escape de anticuerpos neutralizantes generados por inmunidad natural y vacunalImpact of the diversification of SARS-CoV-2 variants during the COVID-19 pandemic in Colombia against the escape of neutralizing antibodies generated by natural and vaccine immunityTrabajo de grado - Doctoradoinfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_db06Texthttp://purl.org/redcol/resource_type/TDMorens, D.M.; Breman, J.G.; Calisher, C.H.; Doherty, P.C.; Hahn, B.H.; Keusch, G.T.; Kramer, L.D.; LeDuc, J.W.; Monath, T.P.; Taubenberger, J.K. 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Immunity 2022, 55, 1764-1778, doi:10.1016/j.immuni.2022.08.008.CORHUCOEvaluación de la inmunidad pos-inmunización contra el SARS-CoV-2 en una cohorte de trabajadores de la salud, Colombia 2021Evaluación de la respuesta inmune contra el SARS-CoV-2 en una cohorte de población colombiana inmunizada con las vacunas incluidas dentro del Plan Nacional de vacunación en Colombia, 2021Instituto Nacional de SaludUnidad Nacional para la Gestión del Riesgo de DesastresEnterritorioEstudiantesInvestigadoresMaestrosLICENSElicense.txtlicense.txttext/plain; charset=utf-85879https://repositorio.unal.edu.co/bitstream/unal/84273/1/license.txteb34b1cf90b7e1103fc9dfd26be24b4aMD51ORIGINAL16847736.2023.pdf16847736.2023.pdfTesis de Doctorado en Ciencias - 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