CD8(+) T Cell-Mediated Immunity during Trypanosoma cruzi Infection: A Path for Vaccine Development?

CD8(+) T Cell-Mediated Immunity during Trypanosoma cruzi Infection: A Path for Vaccine Development?

Author Virgilio, Fernando dos Santos Autor UNIFESP Google Scholar
Pontes, Camila Autor UNIFESP Google Scholar
Dominguez, Mariana Ribeiro Autor UNIFESP Google Scholar
Ersching, Jonatan Autor UNIFESP Google Scholar
Rodrigues, Mauricio Martins Autor UNIFESP Google Scholar
Vasconcelos, Jose Ronnie Autor UNIFESP Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Abstract MHC-restricted CD8(+) T cells are important during infection with the intracellular protozoan parasite Trypanosoma cruzi, the causative agent of Chagas disease. Experimental studies performed in the past 25 years have elucidated a number of features related to the immune response mediated by these T cells, which are important for establishing the parasite/host equilibrium leading to chronic infection. CD8(+) T cells are specific for highly immunodominant antigens expressed by members of the trans-sialidase family. After infection, their activation is delayed, and the cells display a high proliferative activity associated with high apoptotic rates. Although they participate in parasite control and elimination, they are unable to clear the infection due to their low fitness, allowing the parasite to establish the chronic phase when these cells then play an active role in the induction of heart immunopathology. Vaccination with a number of subunit recombinant vaccines aimed at eliciting specific CD8(+) T cells can reverse this path, thereby generating a productive immune response that will lead to the control of infection, reduction of symptoms, and reduction of disease transmission. Due to these attributes, activation of CD8(+) T lymphocytes may constitute a path for the development of a veterinarian or human vaccine.
Language English
Sponsor Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Grant number FAPESP: 2009/06820-4
FAPESP: 2013/13668-0
FAPESP: 2012/22514-3
Date 2014-01-01
Published in Mediators of Inflammation. New York: Hindawi Publishing Corporation, 12 p., 2014.
ISSN 0962-9351 (Sherpa/Romeo, impact factor)
Publisher Hindawi Publishing Corporation
Extent 12
Origin http://dx.doi.org/10.1155/2014/243786
Access rights Open access Open Access
Type Review
Web of Science ID WOS:000338867000001
URI http://repositorio.unifesp.br/handle/11600/37131

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