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Complex Antigens Drive Permissive Clonal Selection in Germinal Centers

Open access
Kuraoka, Masayuki, Schmidt, Aaron G., Nojima, Takuya, Feng, Feng, Watanabe, Akiko, Kitamura, Daisuke, Harrison, Stephen C., Kepler, Thomas B., Kelsoe, Garnett·2016·Immunity

Abstract

SUMMARY Germinal center (GC) B cells evolve towards increased affinity by a Darwinian process that has been studied primarily in genetically restricted, hapten-specific responses. We explored the population dynamics of genetically diverse GC responses to two complex antigens – Bacillus anthracis protective antigen and influenza hemagglutinin – in which B cells competed both intra- and interclonally for distinct epitopes. Preferred VH rearrangements among antigen-binding, naïve B cells were similarly abundant in early GCs but, unlike responses to haptens, clonal diversity increased in GC B cells as early “winners” were replaced by rarer, high-affinity clones. Despite affinity maturation, inter- and intraclonal avidities varied greatly, and half of GC B cells did not bind the immunogen but nonetheless exhibited biased VH use, V(D)J mutation, and clonal expansion comparable to antigen-binding cells. GC reactions to complex antigens permit a range of specificities and affinities, with potential advantages for broad protection.

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Metadata

Authors
Kuraoka, M., Schmidt, A. G., Nojima, T., Feng, F., Watanabe, A., Kitamura, D., Harrison, S. C., Kepler, T. B., & Kelsoe, G.
Venue
Immunity
Publisher
Elsevier BV
Published
2016-03
Volume
44
Issue
3
Pages
542-552
ISSN
1074-7613 (ISSN-L)
OpenAlex
W2289890884
Cited by
313
References
40
FWCI
17.67
Type
journal article
Language
en
Open access
bronze

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CoChat. (2026). Citation check: Complex Antigens Drive Permissive Clonal Selection in Germinal Centers. https://app.cochat.ai/papers/10.1016/j.immuni.2016.02.010
The paper
Kuraoka, M., Schmidt, A. G., Nojima, T., Feng, F., Watanabe, A., Kitamura, D., Harrison, S. C., Kepler, T. B., & Kelsoe, G. (2016). Complex Antigens Drive Permissive Clonal Selection in Germinal Centers. Immunity. https://doi.org/10.1016/j.immuni.2016.02.010

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