Enhanced BCR signaling inflicts early plasmablast and germinal center B cell death.
Enhanced BCR signaling inflicts early plasmablast and germinal center B cell death.
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DOI:
10.1016/j.isci.2021.102038
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发表时间:
2021-02-19
期刊:
影响因子:
5.8
通讯作者:
Toellner KM
中科院分区:
文献类型:
--
作者:
Yam-Puc JC;Zhang L;Maqueda-Alfaro RA;Garcia-Ibanez L;Zhang Y;Davies J;Senis YA;Snaith M;Toellner KM
It is still not clear how B cell receptor (BCR) signaling intensity affects plasma cell (PC) and germinal center (GC) B cell differentiation. We generated Cγ1Cre/wtPtpn6fl/fl mice where SHP-1, a negative regulator of BCR signaling, is deleted rapidly after B cell activation. Although immunization with T-dependent antigens increased BCR signaling, it led to PC reduction and increased apoptosis. Dependent on the antigen, the early GC B cell response was equally reduced and apoptosis increased. At the same time, a higher proportion of GC B cells expressed cMYC, suggesting GC B cell-Tfh cell interactions may be increased. GC B cell numbers returned to normal at later stages, whereas affinity maturation was suppressed in the long term. This confirms that BCR signaling not only directs affinity-dependent B cell selection but also, without adequate further stimulation, can inflict cell death, which may be important for the maintenance of B cell tolerance. BCR signaling without adequate further stimulation can inflict cell death Inappropriate BCR signaling can inhibit extra-follicular PC differentiation Increased BCR signaling induces apoptosis in early GC B cells BCR signaling intensity affects affinity-dependent B cell selection Immunology; immune system; cell biology
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DOI:
10.1126/science.aac4919
发表时间:
2015-08-07
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Gitlin AD;Mayer CT;Oliveira TY;Shulman Z;Jones MJ;Koren A;Nussenzweig MC
通讯作者:
Nussenzweig MC
DOI:
10.1126/science.1213368
发表时间:
2012-06-01
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Khalil AM;Cambier JC;Shlomchik MJ
通讯作者:
Shlomchik MJ
影响因子:
16.6
作者:
Li, Yan-Feng;Xu, Shengli;Ou, Xijun;Lam, Kong-Peng
通讯作者:
Lam, Kong-Peng
影响因子:
4.4
作者:
Mueller, James;Matloubian, Mehrdad;Zikherman, Julie
通讯作者:
Zikherman, Julie
影响因子:
30.5
作者:
Akkaya M;Traba J;Roesler AS;Miozzo P;Akkaya B;Theall BP;Sohn H;Pena M;Smelkinson M;Kabat J;Dahlstrom E;Dorward DW;Skinner J;Sack MN;Pierce SK
通讯作者:
Pierce SK