The magnitude of LFA-1/ICAM-1 forces fine-tune TCR-triggered T cell activation.
The magnitude of LFA-1/ICAM-1 forces fine-tune TCR-triggered T cell activation.
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DOI:
10.1126/sciadv.abg4485
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发表时间:
2022-02-25
期刊:
影响因子:
13.6
通讯作者:
Salaita K
中科院分区:
文献类型:
--
作者:
Ma VP;Hu Y;Kellner AV;Brockman JM;Velusamy A;Blanchard AT;Evavold BD;Alon R;Salaita K
T cells defend against cancer and viral infections by rapidly scanning the surface of target cells seeking specific peptide antigens. This key process in adaptive immunity is sparked upon T cell receptor (TCR) binding of antigens within cell-cell junctions stabilized by integrin (LFA-1)/intercellular adhesion molecule–1 (ICAM-1) complexes. A long-standing question in this area is whether the forces transmitted through the LFA-1/ICAM-1 complex tune T cell signaling. Here, we use spectrally encoded DNA tension probes to reveal the first maps of LFA-1 and TCR forces generated by the T cell cytoskeleton upon antigen recognition. DNA probes that control the magnitude of LFA-1 force show that F>12 pN potentiates antigen-dependent T cell activation by enhancing T cell–substrate engagement. LFA-1/ICAM-1 mechanical events with F>12 pN also enhance the discriminatory power of the TCR when presented with near cognate antigens. Overall, our results show that T cells integrate multiple channels of mechanical information through different ligand-receptor pairs to tune function. DNA-based tension probes reveal that the magnitude of LFA-1 forces tune T cell activation.
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DOI:
10.1083/jcb.201406120
发表时间:
2015-02-16
期刊:
The Journal of cell biology
影响因子:
--
作者:
Comrie WA;Li S;Boyle S;Burkhardt JK
通讯作者:
Burkhardt JK
影响因子:
21.3
作者:
Austen K;Ringer P;Mehlich A;Chrostek-Grashoff A;Kluger C;Klingner C;Sabass B;Zent R;Rief M;Grashoff C
通讯作者:
Grashoff C
影响因子:
30.5
作者:
Barda-Saad, M;Braiman, A;Samelson, LE
通讯作者:
Samelson, LE
影响因子:
7.2
作者:
Dustin, Michael L.
通讯作者:
Dustin, Michael L.
影响因子:
11.2
作者:
Franciszkiewicz, Katarzyna;Le Floc'h, Audrey;Mami-Chouaib, Fathia
通讯作者:
Mami-Chouaib, Fathia