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Doctoral Thesis
DOI
https://doi.org/10.11606/T.42.2009.tde-19102009-151235
Document
Author
Full name
Paula Ordonhez Rigato
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2009
Supervisor
Committee
Sato, Maria Notomi (President)
Arruda, Luciana Barros de
Ferreira, Luis Carlos de Souza
Gidlund, Magnus Ake
Pinto, Aguinaldo Roberto
Title in Portuguese
Imunogenicidade da vacina de DNA quimérica LAMP-1/p55Gag do HIV-1 no período neonatal e efeito da imunização materna na resposta vacinal da prole de camundongos.
Keywords in Portuguese
DNA
HIV
Imunologia
Neonatologia
Síndrome de Imunodeficiência Adquirida (AIDS)
Vacinas
Abstract in Portuguese
A imunogenicidade da vacina de DNA LAMP/gag do HIV-1, que direciona o antígeno aos compartimentos contendo moléculas de classe II do MHC, foi analisada em camundongos BALB/c neonatos e também foi analisado o efeito da imunização materna na resposta vacinal da prole. A vacina LAMP/gag neonatal foi capaz de induzir a produção de anticorpos IgG anti-Gag, aumentar o número de células produtoras de IFN-g para epítopos de classe I e II do MHC, células T CD8+ (TNF-a, IFN-g, granzima) e específicas ao epítopo imunodominante de classe I do MHC da Gag. Além de gerar resposta humoral e celular de longa duração observado até os 9 meses de idade. A imunização pré-concepcional com LAMP/gag transfere anticorpos IgG1 anti-Gag às proles (via transplacentária e leite), diminui a resposta humoral/celular, induz células CD4+CD25+FoxP3, mas não interfere na geração da resposta de memória da prole imunizada. Estrategicamente, a imunização por via intravenosa com LAMP/gag durante a gestação evita a transferência de anticorpos e é capaz de sensibilizar o sistema imunológico fetal.
Title in English
Immunogenicity of LAMP-1/p55Gag of HIV-1 DNA chimeric vaccine on neonatal period and effect of maternal immunization immune response of vaccinated offspring.
Keywords in English
Acquired Immunodeficiency (AIDS)
DNA
HIV
Immunology
Neonatology
Vaccines
Abstract in English
The immunogenicity of LAMP/gag DNA vaccine of HIV-1, which target the antigen to the class II MHC compartment, was evaluated on BALB/c neonate mice and also the effect of maternal immunization on off spring vaccine response was analyzed. The LAMP/gag neonatal vaccination elicited IgG antibody anti-Gag production and augment the IFN-g producing cells to the MHC class I and II epitopes; CD8+ T cells expressing TNF-a, IFN-g, granzime and class I immunodominant epitope of Gag specific cells. Moreover of generate long lasting humoral and cellular immune response until 9 months of age. The LAMP/gag pre-conceptional immunization transferred IgG1 antibody anti-Gag to offspring (by transplacentary and breastmilk route), diminished humoral/cellular response, inducing CD4+CD25+FoxP3 cells on immunized offspring, however did not affect the memory response. Strategically, the intravenous immunization during gestation avoided the antibody transference and primed the fetal immune system.
 
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Publishing Date
2009-12-04
 
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