• JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
  • JoomlaWorks Simple Image Rotator
 
  Bookmark and Share
 
 
Doctoral Thesis
DOI
https://doi.org/10.11606/T.42.2016.tde-17112016-103520
Document
Author
Full name
Raquel Hoffmann Panatieri
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2016
Supervisor
Committee
Boscardin, Silvia Beatriz (President)
Costa, Fábio Trindade Maranhão
Moro, Ana Maria
Soares, Irene da Silva
Wunderlich, Gerhard
Title in Portuguese
Caracterização da resposta imune gerada pelo direcionamento de uma proteína de Plasmodium para as células dendríticas.
Keywords in Portuguese
Anticorpos monoclonais
Células dendríticas
DEC205
Malária
Abstract in Portuguese
Imunidade protetora depende da geração e manutenção do repertório de linfócitos T de memória. A geração dessas células está correlacionada com a apresentação de antígenos pelas células dendríticas (DCs). O direcionamento de antígenos tem sido estudado como um novo método vacinal que consiste em entregar antígenos diretamente para DCs usando anticorpos monoclonais. O principal objetivo desse trabalho foi direcionar uma proteína de Plasmodium para a subpopulação DEC205+ de DCs. Camundongos foram imunizados e então desafiados dias depois, com esporozoítos de P. yoelii. A proteína direcionada não protegeu camundongos do desafio, mas a proteína não direcionada protegeu, alcançando níveis de proteção estéril em torno de 100% em alguns casos. Observamos correlação entre a quantidade dos anticorpos e a proteção relativa dos animais imunizados com a proteína não direcionada. Além disso, utilizando anticorpos monoclonais demonstramos que a região conhecida como major repeat pode ser utilizada como alvo direto de pesquisas em vacinas contra malária.
Title in English
Characterization of the immune response when targeting a protein from Plasmodium to dendritic cells.
Keywords in English
DEC205
Dendritic cells
Malaria
Monoclonal antibodies
Abstract in English
In general, protective immunity against many pathogens depends on the generation of memory T cells, and the survival of cells for a long period of time after initial contact with pathogens. We know that the generation of these cells is correlated with the activation of parasite-specific immune cells and the presentation of antigens for dendritic cell (DCs). Targeting antigens to DCs has been studied as a new vaccination method, delivering antigens directly to DCs using monoclonal antibodies. The goal was target circunsporozoite protein (CSP), from Plasmodium, to a DEC205+ (DC) subset. Mice were immunized and challenged days later using P. yoelii sporozoites. Targeting protein did not protect mice from challenge, but non-targeting CS lead to 100% of protection. We found correlation between levels of antibody with protection, and high levels of anti-CS IgG in mice immunized with non-targeting protein. Using monoclonal antibodies we were able to map major repeat as a potential target for new researches in malaria vaccine.
 
WARNING - Viewing this document is conditioned on your acceptance of the following terms of use:
This document is only for private use for research and teaching activities. Reproduction for commercial use is forbidden. This rights cover the whole data about this document as well as its contents. Any uses or copies of this document in whole or in part must include the author's name.
Publishing Date
2016-11-17
 
WARNING: Learn what derived works are clicking here.
All rights of the thesis/dissertation are from the authors
CeTI-SC/STI
Digital Library of Theses and Dissertations of USP. Copyright © 2001-2024. All rights reserved.