Video Experimental Relacionado

Updated: May 2, 2026

Zika Virus Infectious Cell Culture System and the In Vitro Prophylactic Effect of Interferons

Zika Virus Infectious Cell Culture System and the In Vitro Prophylactic Effect of Interferons

Published on: August 23, 2016

Protección contra el virus del Zika mediante una única vacuna de ARNm modificada por nucleósidos en dosis bajas

Norbert Pardi¹, Michael J Hogan¹, Rebecca S Pelc²

¹Department of Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA.

|February 3, 2017

Resumen

Una nueva vacuna contra el virus del Zika (ZIKV) que utiliza nanopartículas de ARN mensajero (ARNm) es prometedora. Una sola dosis baja en ratones y primates no humanos generó una inmunidad fuerte y duradera contra los desafíos del ZIKV.

Área de la Ciencia:

Virología
Inmunología
Vacunas y vacunas

Sus antecedentes:

El virus del Zika (ZIKV) representa una amenaza significativa para la salud mundial debido a una neuropatología grave.
Las opciones actuales de tratamiento y prevención del ZIKV son limitadas, lo que pone de relieve la necesidad urgente de vacunas efectivas.

Objetivo del estudio:

Evaluar la eficacia de una vacuna candidata de ARNm modificada por nucleósidos contra el virus del Zika.
Evaluar la durabilidad de las respuestas inmunes y la protección provocada por la vacuna de ARNm.

Principales métodos:

Desarrollo de mRNA modificado por nucleósidos encapsulado en nanopartículas de lípidos (mRNA-LNP) que codifica las glicoproteínas de pre-membrana y de envoltura del ZIKV.
Inmunización intradérmica de ratones y primates no humanos con dosis variables de la vacuna de ARNm- LNP.
Evaluación de las respuestas de neutralización de anticuerpos y protección contra el desafío del ZIKV en diferentes momentos posteriores a la vacunación.

Principales resultados:

Una única inmunización intradérmica en dosis bajas provocó respuestas de anticuerpos neutralizantes potentes y duraderas tanto en ratones como en primates no humanos.
Los ratones vacunados estaban protegidos contra el virus ZIKV a las 2 semanas y 5 meses después de la vacunación.
Una dosis única de 50 μg protegió a los primates no humanos contra el ZIKV 5 semanas después de la vacunación.

Conclusiones:

Las vacunas de ARNm-LNP modificadas por nucleósidos pueden inducir rápidamente una inmunidad protectora duradera contra el virus del Zika.
Esta vacuna de ARNm-LNP representa un candidato prometedor para los esfuerzos mundiales de prevención del ZIKV.

Más Videos Relacionados

Evaluation of Zika Virus-specific T-cell Responses in Immunoprivileged Organs of Infected Ifnar1-/- Mice

Evaluation of Zika Virus-specific T-cell Responses in Immunoprivileged Organs of Infected Ifnar1-/- Mice

Published on: October 17, 2018

Quantification of Antibody-dependent Enhancement of the Zika Virus in Primary Human Cells

Quantification of Antibody-dependent Enhancement of the Zika Virus in Primary Human Cells

Published on: January 18, 2019

Videos de Conceptos Relacionados

Vaccinations

Vaccinations

Cancer Vaccines

Cancer Vaccines

Cancer treatment vaccines are a rapidly evolving field that offers a promising approach to immunotherapy. Unlike traditional vaccines that prevent diseases, cancer treatment vaccines are designed to treat existing cancers by stimulating the immune system to recognize and attack cancer cells.
Cancer vaccines come in two categories: preventive (prophylactic) and treatment (active). Preventive vaccines, such as the Human Papillomavirus (HPV) vaccine, protect against viruses that cause certain...

Microorganisms in Medicine and Therapeutics

Microorganisms in Medicine and Therapeutics

Microorganisms play a fundamental role in vaccine development, gene therapy, and therapeutic production. Their biological properties are harnessed to advance medicine and public health. Beyond immunization, microorganisms contribute to gut health, antibiotic synthesis, and genetic disease treatment.Live Attenuated and Inactivated VaccinesLive attenuated vaccines, such as the measles, mumps, and rubella (MMR) vaccine, utilize weakened forms of pathogens to closely resemble natural infections.

Viruses with RNA Genomes

Viruses with RNA Genomes

RNA viruses are categorized into positive-strand, negative-strand, or double-stranded groups based on their genomic structure and replication mechanisms. This classification dictates how they exploit host cellular machinery for protein synthesis and replication. Some RNA viruses also utilize reverse transcription as part of their life cycle, further diversifying their replication strategies.Positive-Strand RNA VirusesPositive-strand RNA viruses have genomes that function directly as messenger...

Vaccines

Vaccines

Vaccines are among the most effective tools in preventive medicine, designed to prepare the immune system to recognize and combat infectious agents. By introducing antigens—substances that the immune system identifies as foreign—vaccines stimulate an adaptive immune response that leads to immunological memory. This immunological memory enables the body to mount a faster and more effective response upon future exposures to the actual pathogen.Vaccines can be categorized based on the...

Cytomegalovirus Disease

Cytomegalovirus Disease

Cytomegalovirus (CMV) disease is caused by human cytomegalovirus, a double-stranded DNA virus of the Herpesviridae family. While primary CMV infection is often asymptomatic in immunocompetent individuals, the virus can cause severe disease in neonates and immunocompromised patients. CMV is the most common cause of congenital viral infection in the United States, and a major pathogen in solid organ and hematopoietic stem cell transplant recipients.CMV is transmitted via bodily fluids, sexual...