Published in:
Open Access
01-12-2017 | Research
Preconception allergen sensitization can induce B10 cells in offspring: a potential main role for maternal IgG
Authors:
Marília Garcia de Oliveira, Luana de Mendonça Oliveira, Aline Aparecida de Lima Lira, Fábio da Ressureição Sgnotto, Alberto José da Silva Duarte, Maria Notomi Sato, Jefferson Russo Victor
Published in:
Allergy, Asthma & Clinical Immunology
|
Issue 1/2017
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Abstract
Background
The mechanisms through which allergies can be inhibited after preconception immunization with allergens are not fully understood. We aimed to evaluate whether maternal immunization can induce a regulatory B (B10) cell population in offspring in concert with allergy inhibition.
Methods
C57BL/6 females were or were not immunized with OVA and were mated with normal WT males. Their offspring were evaluated at 3 days of age or 20 days after neonatal immunization. Human peripheral B cells from atopic and non-atopic individuals were also evaluated.
Results
Preconception OVA immunization induced B10 cells in offspring, and IL-10 production appeared to be critical for FcγRIIB upregulation in offspring B cells. Murine and human IL-10-producing B cells responded in vitro to IgG according to the atopic repertoire of the cells.
Conclusions
Our results reveal that maternal immunization induces allergen-specific B10 cells in offspring and a pivotal role for the IgG repertoire in IL-10 production by murine and human B cells.