Antigen-induced oligomerization of the B cell receptor is an early target of Fc gamma RIIB inhibition.
Antigen-induced oligomerization of the B cell receptor is an early target of Fc gamma RIIB inhibition.
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DOI:
10.4049/jimmunol.0902334
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发表时间:
2010-02-15
期刊:
影响因子:
--
通讯作者:
Pierce SK
中科院分区:
文献类型:
--
作者:
Liu W;Won Sohn H;Tolar P;Meckel T;Pierce SK
The FcγRIIB is a potent inhibitory coreceptor that blocks BCR signaling in response to immune complexes and, as such, plays a decisive role in regulating Ab responses. The recent application of high-resolution live cell imaging to B cell studies is providing new molecular details of the earliest events in the initiation BCR signaling that follow within seconds of Ag binding. In this study, we report that when colligated to the BCR through immune complexes, the FcγRIIB colocalizes with the BCR in microscopic clusters and blocks the earliest events that initiate BCR signaling, including the oligomerization of the BCR within these clusters, the active recruitment of BCRs to these clusters, and the resulting spreading and contraction response. Fluorescence resonance energy transfer analyses indicate that blocking these early events may not require molecular proximity of the cytoplasmic domains of the BCR and FcγRIIB, but relies on the rapid and sustained association of FcγRIIB with raft lipids in the membrane. These results may provide novel early targets for therapies aimed at regulating the FcγRIIB to control Ab responses in autoimmune disease.
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影响因子:
5.3
作者:
Li, Q;Lau, A;Stanley, EF
通讯作者:
Stanley, EF
影响因子:
2.9
作者:
AREND, WP;MANNIK, M;TELLER, DC
通讯作者:
TELLER, DC
影响因子:
32.4
作者:
Carrasco, YR;Fleire, SJ;Batista, FD
通讯作者:
Batista, FD
DOI:
10.1073/pnas.81.19.6159
发表时间:
1984-01-01
期刊:
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA-BIOLOGICAL SCIENCES
影响因子:
--
作者:
BRIAN, AA;MCCONNELL, HM
通讯作者:
MCCONNELL, HM
影响因子:
64.8
作者:
HARTLEY, SB;CROSBIE, J;GOODNOW, CC
通讯作者:
GOODNOW, CC