Transcutaneous Administration of Dengue Vaccines

Viruses

Jaime Henrique Amorim¹  Rúbens Prince dos Santos Alves²  Marianna Teixeira Pinho Favaro²  Samuel Santos Pereira²  Carla Longo de Freitas²  Robert Andreata-Santos²  Camila Mathias-Santos²  Sara Araujo Pereira²  Alexia Adrianne Venceslau-Carvalho²  Luís Carlos de Souza Ferreira²  Lennon Ramos Pereira²  Maria Fernanda Castro-Amarante² 

[1] Center for Biological and Health Sciences, Federal University of Western Bahia, Bahia 47810-047, Brazil;Vaccine Development Laboratory, Microbiology Department, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil;

关键词: transcutaneous immunization;    dengue vaccines;    heat-labile toxin;    adjuvant;    intradermic immunization;   

DOI  :  10.3390/v12050514

来源: DOAJ

【 摘 要 】

In the present study, we evaluated the immunological responses induced by dengue vaccines under experimental conditions after delivery via a transcutaneous (TC) route. Vaccines against type 2 Dengue virus particles (DENV2 New Guinea C (NGC) strain) combined with enterotoxigenic Escherichia coli (ETEC) heat-labile toxin (LT) were administered to BALB/c mice in a three-dose immunization regimen via the TC route. As a control for the parenteral administration route, other mouse groups were immunized with the same vaccine formulation via the intradermic (ID) route. Our results showed that mice vaccinated either via the TC or ID routes developed similar protective immunity, as measured after lethal challenges with the DENV2 NGC strain. Notably, the vaccine delivered through the TC route induced lower serum antibody (IgG) responses with regard to ID-immunized mice, particularly after the third dose. The protective immunity elicited in TC-immunized mice was attributed to different antigen-specific antibody properties, such as epitope specificity and IgG subclass responses, and cellular immune responses, as determined by cytokine secretion profiles. Altogether, the results of the present study demonstrate the immunogenicity and protective properties of a dengue vaccine delivered through the TC route and offer perspectives for future clinical applications.

【 授权许可】

Unknown