SAP-controlled T-B cell interactions underlie germinal centre formation.
SAP-controlled T-B cell interactions underlie germinal centre formation.
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DOI:
10.1038/nature07345
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发表时间:
2008-10-09
期刊:
影响因子:
64.8
通讯作者:
Germain, Ronald N.
中科院分区:
文献类型:
--
作者:
Qi, Hai;Cannons, Jennifer L.;Klauschen, Frederick;Schwartzberg, Pamela L.;Germain, Ronald N.
Generation of long-term antibody-mediated immunity depends on the germinal centre (GC) reaction, which requires cooperation between antigen-specific T and B lymphocytes. In the human X-linked lymphoproliferative disease and its gene-targeted mouse model, loss-of-function mutations in signalling lymphocyte activation molecule-associated protein (SAP, encoded by SH2D1a) cause a profound defect in GC formation by an as yet unknown mechanism. Using two-photon intravital imaging, here we show that SAP deficiency selectively impairs the ability of CD4+ T cells to stably interact with cognate B cells but not antigen-presenting dendritic cells. This selective defect results in a failure of antigen-specific B cells to receive adequate levels of contact-dependent T cell help to expand normally, despite sap−/− T cells exhibiting the known characteristics of otherwise competent helper T cells. Furthermore, lack of stable interactions with B cells renders sap−/− T cells unable to be efficiently recruited to and retained in a nascent GC to sustain the GC reaction. These results offer a compelling explanation for the GC defect due to SAP deficiency and provide novel insights into the bi-directional communication between cognate T and B cells in vivo.
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影响因子:
56.9
作者:
Garside, P;Ingulli, E;Jenkins, MK
通讯作者:
Jenkins, MK
影响因子:
64.8
作者:
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64.5
作者:
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APEL, M
DOI:
10.1084/jem.20052097
发表时间:
2006-06-12
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Cannons JL;Yu LJ;Jankovic D;Crotty S;Horai R;Kirby M;Anderson S;Cheever AW;Sher A;Schwartzberg PL
通讯作者:
Schwartzberg PL
DOI:
10.1084/jem.20040526
发表时间:
2004-07-19
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Hron JD;Caplan L;Gerth AJ;Schwartzberg PL;Peng SL
通讯作者:
Peng SL