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Master's Dissertation
DOI
https://doi.org/10.11606/D.42.2016.tde-10052016-110017
Document
Author
Full name
Natiely Silva Sales
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2015
Supervisor
Committee
Ferreira, Luis Carlos de Souza (President)
Henao, Julian Esteban Muñoz
Miyaji, Eliane Namie
Title in Portuguese
Efeitos da eletroporação in vivo na resposta imunológica induzida por uma vacina de DNA contra tumores induzidos por HPV-16.
Keywords in Portuguese
Câncer cervical
Eletroporação
HPV
Vacinas de DNA
Abstract in Portuguese
Câncer cervical é a terceira causa de morte em mulheres no mundo, e a quarta causa de morte em mulheres no Brasil. Seu principal agente etiológico é o vírus do papiloma humano (HPV), e diversos estudos estão sendo feitos na tentativa de desenvolver abordagens terapêuticas que combatam tumores induzidos por HPV. Nesse contexto, surgem às vacinas de DNA, capazes de induzir resposta imune específica contra esse tipo de tumores em camundongos. Entretanto essas vacinas apresentam baixa imunogenicidade em humanos, sendo necessária estudar abordagens que aumentem a potência dessas vacinas. Eletroporação in vivo (EP) é um método de entrega de vacinas de DNA, capaz de elevar potência das mesmas. Nosso grupo desenvolveu uma imunoterapia baseada em DNA (pgDE7h), e quando associamos a EP em nossa imunização pela via intramuscular, observamos aumento do efeito antitumoral e da frequência T CD8+E7-específicas e citotóxicas, migração de células para o sítio de inoculação do DNA, indução de células T polifuncionais e de memória, além de maior avidez de células T ativadas.
Title in English
Effects of the in vivo electroporation in the induced immune response by DNA vaccines against induced tumors by HPV-16.
Keywords in English
Cervical cancer
DNA vaccines
Electroporation
HPV
Abstract in English
Cervical cancer is the third leading cause of death in women worldwide, and the fourth leading cause of death in women in Brazil. Its main etiological agent is human papilloma virus (HPV), and several studies are being done in trying to develop therapeutic approaches that fight tumors induced by HPV. In this context, there are the DNA vaccines are capable of inducing specific immune response against this type of tumors in mice. However, these vaccines have a low immunogenicity in humans, it is required to study approaches to increase the potency of these vaccines. In vivo electroporation (EP) is a method of delivering DNA vaccines, capable of raising power of the same. Our group has developed a DNA-based immunotherapy (pgDE7h), and when associate EP in our immunization by intramuscularly observed increase antitumor effect and frequency CD8+E7-specific and cytotoxic, cell migration for the inoculation site of the DNA polyfunctional T cell induction and memory, and higher avidity for activated T cells.
 
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Publishing Date
2016-05-10
 
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