Journal article

IFNAR1-Signalling Obstructs ICOS-mediated Humoral Immunity during Non-lethal Blood-Stage Plasmodium Infection

Ismail Sebina, Kylie R James, Megan SF Soon, Lily G Fogg, Shannon E Best, Fabian de Labastida Rivera, Marcela Montes de Oca, Fiona H Amante, Bryce S Thomas, Lynette Beattie, Fernando Souza-Fonseca-Guimaraes, Mark J Smyth, Paul J Hertzog, Geoffrey R Hill, Andreas Hutloff, Christian R Engwerda, Ashraful Haque

PLOS Pathogens | PUBLIC LIBRARY SCIENCE | Published : 2016

Abstract

Parasite-specific antibodies protect against blood-stage Plasmodium infection. However, in malaria-endemic regions, it takes many months for naturally-exposed individuals to develop robust humoral immunity. Explanations for this have focused on antigenic variation by Plasmodium, but have considered less whether host production of parasite-specific antibody is sub-optimal. In particular, it is unclear whether host immune factors might limit antibody responses. Here, we explored the effect of Type I Interferon signalling via IFNAR1 on CD4+ T-cell and B-cell responses in two non-lethal murine models of malaria, P. chabaudi chabaudi AS (PcAS) and P. yoelii 17XNL (Py17XNL) infection. Firstly, we ..

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Grants

Awarded by Australian National Health & Medical Research Council (NHMRC)


Funding Acknowledgements

This work was funded by a Career Development Fellowship (1028634) and a project grant (GRNT1028641) awarded to AHa by the Australian National Health & Medical Research Council (NHMRC). IS was supported by The University of Queensland Centennial and IPRS Scholarships. The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.