Multi-colour DNA-qPAINT reveals how Csk nano-clusters regulate T-cell receptor signalling
Multi-colour DNA-qPAINT reveals how Csk nano-clusters regulate T-cell receptor signalling
复制标题
多色 DNA-qPAINT 揭示 Csk 纳米簇如何调节 T 细胞受体信号传导
DOI:
10.1101/857516
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发表时间:
2019
期刊:
影响因子:
--
通讯作者:
Simoncelli S
中科院分区:
文献类型:
--
作者:
Simoncelli S
Phosphorylation of the negative regulatory element of the tyrosine kinase Lck by Csk down-modulates T-cell receptor induced signalling. Being constitutively active, Csk spatial organization is responsible for regulating this signalling interaction. Here, we used stoichiometrically accurate, multiplexed, single-molecule super-resolution microscopy (DNA-qPAINT) to image the nanoscale spatial architecture of Csk and two binding partners implicated in its membrane association – PAG and TRAF3. Combined with a newly developed co-clustering analysis framework, we provide a powerful resource for dissecting signalling pathways regulated by spatio-temporal organisation. We found that Csk forms nanoscale clusters proximal to the plasma membrane that are lost post-stimulation and re-recruited at later time points. Unexpectedly, these clusters do not directly co-localise with PAG at the membrane, but instead provide a ready pool of monomers to down-regulate signalling. By generating CRISPR/Cas9 knock-out T-cells, our data also identify that protein tyrosine phosphatase non-receptor type 22 (PTPN22) is essential for Csk nanocluster re-recruitment and for maintenance of the synaptic PAG population.
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影响因子:
14.8
作者:
Schnitzbauer, Joerg;Strauss, Maximilian T.;Jungmann, Ralf
通讯作者:
Jungmann, Ralf
DOI:
10.1016/j.bbamcr.2010.12.003
发表时间:
2011
期刊:
Biochimica et biophysica acta
影响因子:
--
作者:
P. Otáhal;S. Pata;P. Angelisová;V. Hořejší;T. Brdicka
通讯作者:
T. Brdicka
影响因子:
8.8
作者:
Davidson D;Zhong MC;Pandolfi PP;Bolland S;Xavier RJ;Seed B;Li X;Gu H;Veillette A
通讯作者:
Veillette A
影响因子:
20.3
作者:
Thomas, Sharyn;Xue, Shao-An;Stauss, Hans J.
通讯作者:
Stauss, Hans J.
影响因子:
7.3
作者:
T. Vang;J. Nielsen;G. Burn
通讯作者:
G. Burn