Intrinsic properties of immunoglobulin IgG1 isotype-switched B cell receptors promote microclustering and the initiation of signaling.
Intrinsic properties of immunoglobulin IgG1 isotype-switched B cell receptors promote microclustering and the initiation of signaling.
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DOI:
10.1016/j.immuni.2010.06.006
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发表时间:
2010-06-25
期刊:
影响因子:
32.4
通讯作者:
Pierce SK
中科院分区:
文献类型:
--
作者:
Liu W;Meckel T;Tolar P;Sohn HW;Pierce SK
Memory B cells express high affinity, immunoglobulin B cell receptors (IgG-BCRs) that enhance B cell responses giving rise to the rapid production of high affinity, IgG antibodies. Despite the central role of IgG-BCRs in memory responses, the mechanisms by which the IgG-BCRs function to enhance B cell responses are not fully understood. Using high-resolution live-cell imaging we showed that independent of affinity, IgG1-BCRs dramatically enhanced the earliest BCR-intrinsic events that followed within seconds of B cells’ encounter with membrane bound antigen including BCR oligomerization and BCR microcluster growth, leading to Syk kinase recruitment and calcium responses. The enhancement of these early events was dependent on a membrane proximal region of the IgG1 cytoplasmic tail not previously appreciated to play a role in IgG1-BCR signaling. Thus, intrinsic properties of the IgG1-BCR enhance early antigen-driven events that ultimately translate into heightened signaling.
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DOI:
10.1083/jcb.200802007
发表时间:
2008-07-28
期刊:
The Journal of cell biology
影响因子:
--
作者:
Sohn HW;Tolar P;Pierce SK
通讯作者:
Pierce SK
影响因子:
30.5
作者:
Martin, SW;Goodnow, CC
通讯作者:
Goodnow, CC
影响因子:
2.2
作者:
Baldwin, T.;Sakthianandeswaren, A.;Handman, E.
通讯作者:
Handman, E.
影响因子:
5
作者:
Elso, CM;Roberts, LJ;Handman, E
通讯作者:
Handman, E
影响因子:
56.9
作者:
Kaisho, T;Schwenk, F;Rajewsky, K
通讯作者:
Rajewsky, K