Phosphorylation of CrkL S114 induced by common gamma chain cytokines and T-cell receptor signal transduction
Abstract T-cell activation and cellular expansion by common gamma chain cytokines such as Interleukin-2 is necessary for adaptive immunity. However, when unregulated these same pathways promote pathologies ranging from autoimmune disorders to cancer. While the functional role of Interleukin-2 and do...
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oai:doaj.org-article:9512cc6ef415433aa641845f6ef594ca2021-12-02T16:46:35ZPhosphorylation of CrkL S114 induced by common gamma chain cytokines and T-cell receptor signal transduction10.1038/s41598-021-96428-y2045-2322https://doaj.org/article/9512cc6ef415433aa641845f6ef594ca2021-08-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-96428-yhttps://doaj.org/toc/2045-2322Abstract T-cell activation and cellular expansion by common gamma chain cytokines such as Interleukin-2 is necessary for adaptive immunity. However, when unregulated these same pathways promote pathologies ranging from autoimmune disorders to cancer. While the functional role of Interleukin-2 and downstream effector molecules is relatively clear, the repertoire of phosphoregulatory proteins downstream of this pathway is incomplete. To identify phosphoproteins downstream of common gamma chain receptor, YT cells were radiolabeled with [32P]-orthophosphate and stimulated with Interleukin-2. Subsequently, tyrosine phosphorylated proteins were immunopurified and subjected to tandem mass spectrometry—leading to the identification of CrkL. Phosphoamino acid analysis revealed concurrent serine phosphorylation of CrkL and was later identified as S114 by mass spectrometry analysis. S114 was inducible through stimulation with Interleukin-2 or T-cell receptor stimulation. Polyclonal antibodies were generated against CrkL phospho-S114, and used to show its inducibility by multiple stimuli. These findings confirm CrkL as an Interleukin-2 responsive protein that becomes phosphorylated at S114 by a kinase/s downstream of PI3K and MEK/ERK signaling.Armando EstradaAlejandro C. RodriguezGeorgialina RodriguezAlice H. GrantYoshira M. Ayala-MarinAmy J. ArrietaRobert A. KirkenNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021) |
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Medicine R Science Q Armando Estrada Alejandro C. Rodriguez Georgialina Rodriguez Alice H. Grant Yoshira M. Ayala-Marin Amy J. Arrieta Robert A. Kirken Phosphorylation of CrkL S114 induced by common gamma chain cytokines and T-cell receptor signal transduction |
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Abstract T-cell activation and cellular expansion by common gamma chain cytokines such as Interleukin-2 is necessary for adaptive immunity. However, when unregulated these same pathways promote pathologies ranging from autoimmune disorders to cancer. While the functional role of Interleukin-2 and downstream effector molecules is relatively clear, the repertoire of phosphoregulatory proteins downstream of this pathway is incomplete. To identify phosphoproteins downstream of common gamma chain receptor, YT cells were radiolabeled with [32P]-orthophosphate and stimulated with Interleukin-2. Subsequently, tyrosine phosphorylated proteins were immunopurified and subjected to tandem mass spectrometry—leading to the identification of CrkL. Phosphoamino acid analysis revealed concurrent serine phosphorylation of CrkL and was later identified as S114 by mass spectrometry analysis. S114 was inducible through stimulation with Interleukin-2 or T-cell receptor stimulation. Polyclonal antibodies were generated against CrkL phospho-S114, and used to show its inducibility by multiple stimuli. These findings confirm CrkL as an Interleukin-2 responsive protein that becomes phosphorylated at S114 by a kinase/s downstream of PI3K and MEK/ERK signaling. |
format |
article |
author |
Armando Estrada Alejandro C. Rodriguez Georgialina Rodriguez Alice H. Grant Yoshira M. Ayala-Marin Amy J. Arrieta Robert A. Kirken |
author_facet |
Armando Estrada Alejandro C. Rodriguez Georgialina Rodriguez Alice H. Grant Yoshira M. Ayala-Marin Amy J. Arrieta Robert A. Kirken |
author_sort |
Armando Estrada |
title |
Phosphorylation of CrkL S114 induced by common gamma chain cytokines and T-cell receptor signal transduction |
title_short |
Phosphorylation of CrkL S114 induced by common gamma chain cytokines and T-cell receptor signal transduction |
title_full |
Phosphorylation of CrkL S114 induced by common gamma chain cytokines and T-cell receptor signal transduction |
title_fullStr |
Phosphorylation of CrkL S114 induced by common gamma chain cytokines and T-cell receptor signal transduction |
title_full_unstemmed |
Phosphorylation of CrkL S114 induced by common gamma chain cytokines and T-cell receptor signal transduction |
title_sort |
phosphorylation of crkl s114 induced by common gamma chain cytokines and t-cell receptor signal transduction |
publisher |
Nature Portfolio |
publishDate |
2021 |
url |
https://doaj.org/article/9512cc6ef415433aa641845f6ef594ca |
work_keys_str_mv |
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