• 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
 
 
Master's Dissertation
DOI
https://doi.org/10.11606/D.42.2010.tde-17122010-141513
Document
Author
Full name
Adriana Magalhães Santos
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2010
Supervisor
Committee
Taborda, Carlos Pelleschi (President)
Almeida, Sandro Rogerio de
Correa, Benedito
Title in Portuguese
Imunoproteção induzida por células dendríticas pulsadas com peptídeo P10 derivado da gp43 de Paracoccidioides brasiliensis.
Keywords in Portuguese
Paracoccidioides brasiliensis
Células dendríticas
Micoses
Paracoccidioidomicose
Peptídeos
Abstract in Portuguese
Paracoccidioidomicose (PCM) é uma micose sistêmica causada pelo fungo Paracoccidioides brasiliensis e é considerada a 10º causa de morte dentre doenças infecciosas e parasitárias no Brasil. As células dendríticas (DCs) são as mais eficientes na apresentação de antígenos, e sendo de 100 a 1000 vezes mais eficientes que um adjuvante não específico. P10, motivo específico de 15 aminoácidos derivado da gp43 excretada pelo fungo, é reconhecido por linfócitos T, direciona para resposta Th1 e confere proteção no modelo experimental. Nesse sentido, analisamos a capacidade de DCs pulsadas com P10 em ativar uma resposta protetora. In vitro observamos que a proliferação de esplenócitos foi maior quando a reestimução era feira com P10 e DCs juntos. In vivo, camundongos infectados e tratados com DCs pulsadas com P10 apresentaram diminuição da carga fúngica e melhoria do tecido pulmonar, aumento de IFN-g/IL-12 e diminuição de IL-4/IL-10. Esses resultados evidenciam o potencial das DCs atuando como adjuvante para o P10 em uma vacina para o tratamento e cura da PCM.
Title in English
Immune protection by dendritic cells pulsed with peptide P10 derived from the gp43 of Paracoccidioides brasiliensis.
Keywords in English
Paracoccidioides brasiliensis
Dentritic cells
Mycoses
Paracoccodioidomycosis
Peptides
Abstract in English
Paracoccidiodomycosis (PCM) is a systemic mycosis caused by the fungus Paracoccidioides brasiliensis. In Brazil, it is ranked as the tenth cause of death among the chronic infectious and parasitic diseases. Dendritic cells (DCs) are the most efficient antigen presenting cells, and they are at least 100-1000 times more efficient than a non specific adjuvant. The P10, 15-amino acid peptide motif derived from gp43 secreted by the fungus, is recognized by T cells, induces Th1 response and protects mice in a murine model of the disease. In the present work we analyzed the ability of DCs pulsed with P10 to elicit a protective response. In vitro results showed that a stronger proliferation of the splenocytes was reached when induced by DCs with P10. In vivo, mice infected and treated with DCs pulsed with P10 showed reduce of the fungi burden with less inflamed areas, higher levels of IFN-g/IL-12 and lower levels of IL-10/IL-4. All that point out the importance of the adjuvant role of DCs when developing a vaccine using P10 for the treatment or cure of PCM.
 
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
2011-03-02
 
WARNING: The material described below relates to works resulting from this thesis or dissertation. The contents of these works are the author's responsibility.
  • Dantas, S.F.I.M., et al. Identification and characterization of antigenic proteins potentially expressed during the infectious process of Paracoccidioides brasiliensis [doi:10.1016/j.micinf.2009.05.009]. Microbes and Infection [online], 2009, vol. 11, p. 895-903.
  • Magalhães, A., et al. Prophylactic and therapeutic vaccination using dendritic cells primed with peptide 10 derived from the 43-kilodanton glycoprotein of Paracoccidioides brasiliensis [doi:10.1128/CVI.05414-11]. Clinical and Vaccine Immunology [online], 2012, vol. 19, p. 23-29.
  • MENDES, F. E. S., et al. Correlation of the in vitro antifungal drug susceptibility with the in vivo activity of fluconazole in a murine model of cerebral infection caused by Cryptococcus gattii [doi:10.1007/s10096-010-1034-8]. European Journal of Clinical Microbiology & Infectious Diseases [online], 2010, vol. 29, p. 1525-1532.
  • SABINO, E. C., et al. Evaluation of the inno-Lia HTLV I/II assay for the confirmation of HTLV reative sera in blood bank screening. Journal of Clinical Microbiology, 1999, vol. 37, nº 5, p. 1324-1328.
  • AMORIM, J., et al. Generation of memory, TH17 and regulatory T Cells in BALB/c mice immunized with plasmid DNA enconding the P10 peptide of Paracoccidioides brasiliensis. In 2nd Dimorphic Fungal Pathogens, Miami, 2010. 2nd Dimorphic Fungal Pathogens., 2010. Abstract.
  • AMORIM, J., et al. Geração de células T de memória e linfócitos T reguladores em camundongos BALB/c vacinados com vetor plasmidial contendo o inserto P10 de Paracoccidioides brasiliensis. In 25 Congresso Brasileiro de Microbiologia, Porto de Galinhas, 2009. 25 Congresso Brasileiro de Microbiologia., 2009. Resumo.
  • ARRUDA, D. C., et al. The VH CDR2 peptide C7H2 interferes in action dynamics, induces apoptosis in B16F10-Nex2 cells in vitro and activates dendritic cells to reduce metastasis in a melanoma syngeneic model. In Internacional Conference on Omics Studies, Orlando, Florida, 2013. Proceedings of International Conference on Omics Studies., 2013. Resumo.
  • BRAGA-SILVA, L. A., et al. Efeito do Lopinavir em modelo murino de infecção disseminada por Candida albicans. In 27 congresso Brasileiro de Microbiologiai, Natal - RN, 2013. 27 Congresso Brasileiro de Microbiologia., 2013. Resumo.
  • Muñoz, J. E., et al. Avaliação do peptídeo sintético P10 (P10) como adjuvante ao tratamento quimioterápico e sua resposta pulmonar em camundongos BALB/c anérgicos infectados com Paracoccidioides brasiliensis. In VI Congresso Brasileiro de Micologia, Brasilia, 2010. VI Congresso Brasileiro de Micologia., 2010. Resumo.
  • Muñoz, J. E., et al. Avaliação do peptídeo sintético P10 como adjuvante ao tratamento quimioterápico e sua resposta pulmonar em camundongos BALB/c anérgicos infectados com Paracoccidioides brasiliensis. In 25 Congresso Brasileiro de Microbiologia, Porto de Galinhas, 2009. 25 Congresso Brasileiro de Microbiologia., 2009. Resumo.
  • SANTOS, D. A., et al. Anti-gp43 monoclonal antibody protection in the infection by PB01-like group of Paracoccidioides brasiliensis isolates. In 2nd Dimorphic Fungal Pathogens, Miami, 2010. 2nd Dimorphic Fungal Pathogens., 2010. Abstract.
  • SANTOS, D. A., et al. Caracterização exoantigênica de isolados de Paracoccidioides brasiliensis do grupo "PB01-like". In 25 Congresso Brasileiro de Microbiologia, Porto de Galinhas, 2009. 25 Congresso Brasileiro de Microbiologia., 2009. Resumo.
  • SANTOS, S. S., et al. Anti-DEC-205 receptor carrying P10 induces protective response in experimental Paracoccidioidomycosis. In 15th International Congress of Immunology (ICI), Milão, 2013. 15th International Congress of Immunology (ICI)., 2013. Abstract.
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.