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LYP 在 T 细胞中调节 SLP76 和其他衔接蛋白。

LYP regulates SLP76 and other adaptor proteins in T cells.

机构信息

Unidad de Excelencia Instituto de Biología y Genética Molecular (IBGM), CSIC-Universidad de Valladolid, c/ Sanz y Forés 3, 47003, Valladolid, Spain.

Instituto de Biología Molecular y Celular del Cáncer (IBMCC), CSIC-Universidad de Salamanca, Campus Unamuno, 37007, Salamanca, Spain.

出版信息

Biol Res. 2024 Sep 28;57(1):69. doi: 10.1186/s40659-024-00536-8.

DOI:10.1186/s40659-024-00536-8
PMID:39342392
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC11438317/
Abstract

BACKGROUND

The LYP tyrosine phosphatase presents a SNP (1858C > T) that increases the risk of developing autoimmune diseases such as type I diabetes and arthritis. It remains unclear how this SNP affects LYP function and promotes the development of these diseases. The scarce information about LYP substrates is in part responsible for the poor understanding of LYP function.

RESULTS

In this study, we identify in T lymphocytes several adaptor proteins as potential substrates targeted by LYP, including FYB, SLP-76, HS-1, Vav, SKAP1 and SKAP2. We also show that LYP co-localizes with SLP76 in microclusters, upon TCR engagement.

CONCLUSIONS

These data indicate that LYP may modulate T cell activation by dephosphorylating several adaptor proteins, such as FYB, SLP-76, HS-1, Vav, SKAP1 and SKAP2 upon TCR engagement.

摘要

背景

LYP 酪氨酸磷酸酶存在一个 SNP(1858C>T),增加了患自身免疫性疾病(如 1 型糖尿病和关节炎)的风险。目前尚不清楚该 SNP 如何影响 LYP 的功能并促进这些疾病的发展。关于 LYP 底物的信息很少,这也是对 LYP 功能了解不足的部分原因。

结果

在这项研究中,我们在 T 淋巴细胞中鉴定出几种衔接蛋白作为 LYP 的潜在底物,包括 FYB、SLP-76、HS-1、Vav、SKAP1 和 SKAP2。我们还表明,在 TCR 结合后,LYP 与 SLP76 共定位于微簇中。

结论

这些数据表明,LYP 可能通过去磷酸化 FYB、SLP-76、HS-1、Vav、SKAP1 和 SKAP2 等几种衔接蛋白来调节 T 细胞的激活,而这些衔接蛋白在 TCR 结合后被磷酸化。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/c39bfdc313be/40659_2024_536_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/d3edbe98737a/40659_2024_536_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/4cb43f4f3e16/40659_2024_536_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/a22c2f163fa6/40659_2024_536_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/0b81be045507/40659_2024_536_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/c39bfdc313be/40659_2024_536_Fig5_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/d3edbe98737a/40659_2024_536_Fig1_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/4cb43f4f3e16/40659_2024_536_Fig2_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/a22c2f163fa6/40659_2024_536_Fig3_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/0b81be045507/40659_2024_536_Fig4_HTML.jpg
https://cdn.ncbi.nlm.nih.gov/pmc/blobs/1fdf/11438317/c39bfdc313be/40659_2024_536_Fig5_HTML.jpg

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本文引用的文献

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PSTPIP1-LYP phosphatase interaction: structural basis and implications for autoinflammatory disorders.PSTPIP1-LYP 磷酸酶相互作用:结构基础及对自身炎症性疾病的影响。
Cell Mol Life Sci. 2022 Feb 12;79(2):131. doi: 10.1007/s00018-022-04173-w.
2
Both Intrinsic Substrate Preference and Network Context Contribute to Substrate Selection of Classical Tyrosine Phosphatases.内在底物偏好和网络背景都对经典酪氨酸磷酸酶的底物选择有影响。
J Biol Chem. 2017 Mar 24;292(12):4942-4952. doi: 10.1074/jbc.M116.757518. Epub 2017 Feb 3.
3
Alarming consequences - autoinflammatory disease spectrum due to mutations in proline-serine-threonine phosphatase-interacting protein 1.
令人担忧的后果——脯氨酸-丝氨酸-苏氨酸磷酸酶相互作用蛋白 1 突变导致的自身炎症性疾病谱。
Curr Opin Rheumatol. 2016 Sep;28(5):550-9. doi: 10.1097/BOR.0000000000000314.
4
NLRP3 tyrosine phosphorylation is controlled by protein tyrosine phosphatase PTPN22.NLRP3酪氨酸磷酸化由蛋白酪氨酸磷酸酶PTPN22控制。
J Clin Invest. 2016 May 2;126(5):1783-800. doi: 10.1172/JCI83669. Epub 2016 Apr 4.
5
PhosphoSitePlus, 2014: mutations, PTMs and recalibrations.磷酸化位点Plus,2014:突变、翻译后修饰与重新校准。
Nucleic Acids Res. 2015 Jan;43(Database issue):D512-20. doi: 10.1093/nar/gku1267. Epub 2014 Dec 16.
6
Vav family exchange factors: an integrated regulatory and functional view.Vav家族交换因子:综合调控与功能视角
Small GTPases. 2014;5(2):9. doi: 10.4161/21541248.2014.973757.
7
Proline-serine-threonine phosphatase interacting protein 1 inhibition of T-cell receptor signaling depends on its SH3 domain.脯氨酸-丝氨酸-苏氨酸磷酸酶相互作用蛋白1对T细胞受体信号传导的抑制作用取决于其SH3结构域。
FEBS J. 2014 Sep;281(17):3844-54. doi: 10.1111/febs.12912. Epub 2014 Aug 5.
8
The C-terminal SH3 domain contributes to the intramolecular inhibition of Vav family proteins.C 端 SH3 结构域有助于 Vav 家族蛋白的分子内抑制。
Sci Signal. 2014 Apr 15;7(321):ra35. doi: 10.1126/scisignal.2004993.
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Tyrosine phosphatase PTPN22: multifunctional regulator of immune signaling, development, and disease.酪氨酸磷酸酶PTPN22:免疫信号传导、发育和疾病的多功能调节因子。
Annu Rev Immunol. 2014;32:83-119. doi: 10.1146/annurev-immunol-032713-120249. Epub 2013 Dec 18.
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Mol Cell Biol. 2013 Nov;33(21):4140-51. doi: 10.1128/MCB.00410-13. Epub 2013 Aug 26.