CXCR3 chemokine receptor contributes to specific CD8+ T cell activation by pDC during infection with intracellular pathogens.

Autor: Camila Pontes Ferreira, Leonardo Moro Cariste, Isaú Henrique Noronha, Danielle Fernandes Durso, Joseli Lannes-Vieira, Karina Ramalho Bortoluci, Daniel Araki Ribeiro, Douglas Golenbock, Ricardo Tostes Gazzinelli, José Ronnie Carvalho de Vasconcelos
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: PLoS Neglected Tropical Diseases, Vol 14, Iss 6, p e0008414 (2020)
Druh dokumentu: article
ISSN: 1935-2727
1935-2735
DOI: 10.1371/journal.pntd.0008414
Popis: Chemokine receptor type 3 (CXCR3) plays an important role in CD8+ T cells migration during intracellular infections, such as Trypanosoma cruzi. In addition to chemotaxis, CXCR3 receptor has been described as important to the interaction between antigen-presenting cells and effector cells. We hypothesized that CXCR3 is fundamental to T. cruzi-specific CD8+ T cell activation, migration and effector function. Anti-CXCR3 neutralizing antibody administration to acutely T. cruzi-infected mice decreased the number of specific CD8+ T cells in the spleen, and those cells had impaired in activation and cytokine production but unaltered proliferative response. In addition, anti-CXCR3-treated mice showed decreased frequency of CD8+ T cells in the heart and numbers of plasmacytoid dendritic cells in spleen and lymph node. As CD8+ T cells interacted with plasmacytoid dendritic cells during infection by T. cruzi, we suggest that anti-CXCR3 treatment lowers the quantity of plasmacytoid dendritic cells, which may contribute to impair the prime of CD8+ T cells. Understanding which molecules and mechanisms guide CD8+ T cell activation and migration might be a key to vaccine development against Chagas disease as those cells play an important role in T. cruzi infection control.
Databáze: Directory of Open Access Journals
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