Article (Scientific journals)
IL-4Ralpha-associated antigen processing by B cells promotes immunity in Nippostrongylus brasiliensis infection.
Horsnell, William G. C.; Darby, Matthew G.; Hoving, Jennifer C. et al.
2013In PLoS Pathogens, 9 (10), p. 1003662
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Abstract :
[en] In this study, B cell function in protective T(H)2 immunity against N. brasiliensis infection was investigated. Protection against secondary infection depended on IL-4Ralpha and IL-13; but not IL-4. Protection did not associate with parasite specific antibody responses. Re-infection of B cell-specific IL-4Ralpha(-)/(-) mice resulted in increased worm burdens compared to control mice, despite their equivalent capacity to control primary infection. Impaired protection correlated with reduced lymphocyte IL-13 production and B cell MHC class II and CD86 surface expression. Adoptive transfer of in vivo N. brasiliensis primed IL-4Ralpha expressing B cells into naive BALB/c mice, but not IL-4Ralpha or IL-13 deficient B cells, conferred protection against primary N. brasiliensis infection. This protection required MHC class II compatibility on B cells suggesting cognate interactions by B cells with CD4(+) T cells were important to co-ordinate immunity. Furthermore, the rapid nature of these protective effects by B cells suggested non-BCR mediated mechanisms, such as via Toll Like Receptors, was involved, and this was supported by transfer experiments using antigen pulsed Myd88(-)/(-) B cells. These data suggest TLR dependent antigen processing by IL-4Ralpha-responsive B cells producing IL-13 contribute significantly to CD4(+) T cell-mediated protective immunity against N. brasiliensis infection.
Disciplines :
Immunology & infectious disease
Author, co-author :
Horsnell, William G. C.
Darby, Matthew G.
Hoving, Jennifer C.
Nieuwenhuizen, Natalie
McSorley, Henry J.
Ndlovu, Hlumani
Bobat, Saeeda
Kimberg, Matti
Kirstein, Frank
Cutler, Anthony J.
Dewals, Benjamin G  ;  Université de Liège - ULiège > Immunologie et vaccinologie
Cunningham, Adam F.
Brombacher, Frank
More authors (3 more) Less
Language :
English
Title :
IL-4Ralpha-associated antigen processing by B cells promotes immunity in Nippostrongylus brasiliensis infection.
Publication date :
October 2013
Journal title :
PLoS Pathogens
ISSN :
1553-7366
eISSN :
1553-7374
Publisher :
Public Library of Science, United States - California
Volume :
9
Issue :
10
Pages :
e1003662
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 19 December 2013

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