ZBTB32 restrains antibody responses to murine cytomegalovirus infections, but not other repetitive challenges
Zhou, You W
Gerardo, Diana K
Ripperger, Tyler J
Parikh, Bijal A
Jamwal, Deepa R
Kiela, Pawel R
Boon, Adrianus C M
Yokoyama, Wayne M
Hsieh, Chyi S
AffiliationUniv Arizona, Coll Med, Dept Immunobiol
Univ Arizona, Coll Med, Dept Pediat
MetadataShow full item record
PublisherNATURE PUBLISHING GROUP
CitationJash, A., Zhou, Y.W., Gerardo, D.K. et al. ZBTB32 restrains antibody responses to murine cytomegalovirus infections, but not other repetitive challenges. Sci Rep 9, 15257 (2019) doi:10.1038/s41598-019-51860-z
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AbstractZBTB32 is a transcription factor that is highly expressed by a subset of memory B cells and restrains the magnitude and duration of recall responses against hapten-protein conjugates. To define physiological contexts in which ZBTB32 acts, we assessed responses by Zbtb32-/- mice or bone marrow chimeras against a panel of chronic and acute challenges. Mixed bone marrow chimeras were established in which all B cells were derived from either Zbtb32-/- mice or control littermates. Chronic infection of Zbtb32-/- chimeras with murine cytomegalovirus led to nearly 20-fold higher antigen-specific IgG2b levels relative to controls by week 9 post-infection, despite similar viral loads. In contrast, IgA responses and specificities in the intestine, where memory B cells are repeatedly stimulated by commensal bacteria, were similar between Zbtb32-/- mice and control littermates. Finally, an infection and heterologous booster vaccination model revealed no role for ZBTB32 in restraining primary or recall antibody responses against influenza viruses. Thus, ZBTB32 does not limit recall responses to a number of physiological acute challenges, but does restrict antibody levels during chronic viral infections that periodically engage memory B cells. This restriction might selectively prevent recall responses against chronic infections from progressively overwhelming other antibody specificities.
NoteOpen access journal
VersionFinal published version
SponsorsNational Institutes of HealthUnited States Department of Health & Human ServicesNational Institutes of Health (NIH) - USA [R01AI99109, R01AI131680, U01AI131349, K08AI04991]; New York Stem Cell Foundation
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