| Author | Cestari, Igor | |
| Author | Ansa-Addo, Ephraim | |
| Author | Deolindo, Poliana | |
| Author | Inal, Jameel M. | |
| Author | Ramirez, Marcel I. | |
| Access date | 2016-08-25T16:58:46Z | |
| Available date | 2016-08-25T16:58:46Z | |
| Document date | 2012 | |
| Citation | CESTARI, Igor; et al. Trypanosoma cruzi Immune Evasion Mediated by Host Cell-Derived Microvesicles. J Immunol., v.188, p.1942-1952, Jan. 2012. | pt_BR |
| ISSN | 0022-1767 | pt_BR |
| URI | https://www.arca.fiocruz.br/handle/icict/15405 | |
| Language | eng | pt_BR |
| Publisher | The American Association of Immunologists | pt_BR |
| Rights | open access | |
| Subject in Portuguese | Trypanosoma cruzi | pt_BR |
| Subject in Portuguese | Doença de Chagas | pt_BR |
| Subject in Portuguese | Microvesículas | pt_BR |
| Subject in Portuguese | Imunidade inata | pt_BR |
| Title | Trypanosoma cruzi immune evasion mediated by host cell-derived microvesicles | pt_BR |
| Type | Article | |
| DOI | 10.4049/jimmunol.1102053 | |
| Abstract | The innate immune system is the first mechanism of vertebrate defense against pathogen infection. In this study, we present evidence for a novel immune evasion mechanism of Trypanosoma cruzi, mediated by host cell plasma membrane-derived vesicles. We found that T. cruzi metacyclic trypomastigotes induced microvesicle release from blood cells early in infection. Upon their release, microvesicles formed a complex on the T. cruzi surface with the complement C3 convertase, leading to its stabilization and inhibition, and ultimately resulting in increased parasite survival. Furthermore, we found that TGF-β-bearing microvesicles released from monocytes and lymphocytes promoted rapid cell invasion by T. cruzi, which also contributed to parasites escaping the complement attack. In addition, in vivo infection with T. cruzi showed a rapid increase of microvesicle levels in mouse plasma, and infection with exogenous microvesicles resulted in increased T. cruzi parasitemia. Altogether, these data support a role for microvesicles contributing to T. cruzi evasion of innate immunity. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Molecular de Parasitas e Vetores. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | London Metropolitan University. Faculty of Life Sciences. Cellular and Molecular Immunology Research Centre. London, UK. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratório de Biologia Molecular de Parasitas e Vetores. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Affilliation | London Metropolitan University. Faculty of Life Sciences. Cellular and Molecular Immunology Research Centre. London, UK. | pt_BR |
| Affilliation | Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Laboratóio de Biologia Molecular de Parasitas e Vetores. Rio de Janeiro, RJ, Brasil. | pt_BR |
| Subject | Trypanosoma cruzi | pt_BR |
| Subject | Chagas Disease | pt_BR |
| Subject | Microvesículas | pt_BR |
| Subject | Innate immunity | pt_BR |
| e-ISSN | 1550-6606 | |
| xmlui.metadata.dc.subject.ods | 03 Saúde e Bem-Estar | |
