2.50
Hdl Handle:
http://hdl.handle.net/10033/247631
Title:
First insight into the kinome of human regulatory T cells.
Authors:
König, Sebastian; Probst-Kepper, Michael; Reinl, Tobias; Jeron, Andreas; Huehn, Jochen; Schraven, Burkhart; Jänsch, Lothar
Abstract:
Regulatory T cells (Tregs) are essential for controlling peripheral tolerance by the active suppression of various immune cells including conventional T effector cells (Teffs). Downstream of the T cell receptor (TCR), more than 500 protein kinases encoded by the human genome have to be considered in signaling cascades regulating the activation of Tregs and Teffs, respectively. Following TCR engagement, Tregs posses a number of unique attributes, such as constitutive expression of Foxp3, hyporesponsiveness and poor cytokine production. Furthermore, recent studies showed that altered regulation of protein kinases is important for Treg function. These data indicate that signaling pathways in Tregs are distinctly organized and alterations at the level of protein kinases contribute to the unique Treg phenotype. However, kinase-based signaling networks in Tregs are poorly understood and necessitate further systematic characterization. In this study, we analyzed the differential expression of kinases in Tregs and Teffs by using a kinase-selective proteome strategy. In total, we revealed quantitative information on 185 kinases expressed in the human CD4(+) T cell subsets. The majority of kinases was equally abundant in both T cell subsets, but 11 kinases were differentially expressed in Tregs. Most strikingly, Tregs showed an altered expression of cell cycle kinases including CDK6. Quantitative proteomics generates first comparative insight into the kinase complements of the CD4(+) Teff and Treg subset. Treg-specific expression pattern of 11 protein kinases substantiate the current opinion that TCR-mediated signaling cascades are altered in Tregs and further suggests that Tregs exhibit significant specificities in cell-cycle control and progression.
Affiliation:
Department of Molecular Structural Biology, Helmholtz-Zentrum für Infektionsforschung, Braunschweig, Germany.
Citation:
First insight into the kinome of human regulatory T cells. 2012, 7 (7):e40896 PLoS ONE
Journal:
PloS one
Issue Date:
2012
URI:
http://hdl.handle.net/10033/247631
DOI:
10.1371/journal.pone.0040896
PubMed ID:
22815858
Type:
Article
Language:
en
ISSN:
1932-6203
Appears in Collections:
Publications of RG Cellular Proteome Research (CPRO)

Full metadata record

DC FieldValue Language
dc.contributor.authorKönig, Sebastianen_GB
dc.contributor.authorProbst-Kepper, Michaelen_GB
dc.contributor.authorReinl, Tobiasen_GB
dc.contributor.authorJeron, Andreasen_GB
dc.contributor.authorHuehn, Jochenen_GB
dc.contributor.authorSchraven, Burkharten_GB
dc.contributor.authorJänsch, Lotharen_GB
dc.date.accessioned2012-10-08T14:02:41Z-
dc.date.available2012-10-08T14:02:41Z-
dc.date.issued2012-
dc.identifier.citationFirst insight into the kinome of human regulatory T cells. 2012, 7 (7):e40896 PLoS ONEen_GB
dc.identifier.issn1932-6203-
dc.identifier.pmid22815858-
dc.identifier.doi10.1371/journal.pone.0040896-
dc.identifier.urihttp://hdl.handle.net/10033/247631-
dc.description.abstractRegulatory T cells (Tregs) are essential for controlling peripheral tolerance by the active suppression of various immune cells including conventional T effector cells (Teffs). Downstream of the T cell receptor (TCR), more than 500 protein kinases encoded by the human genome have to be considered in signaling cascades regulating the activation of Tregs and Teffs, respectively. Following TCR engagement, Tregs posses a number of unique attributes, such as constitutive expression of Foxp3, hyporesponsiveness and poor cytokine production. Furthermore, recent studies showed that altered regulation of protein kinases is important for Treg function. These data indicate that signaling pathways in Tregs are distinctly organized and alterations at the level of protein kinases contribute to the unique Treg phenotype. However, kinase-based signaling networks in Tregs are poorly understood and necessitate further systematic characterization. In this study, we analyzed the differential expression of kinases in Tregs and Teffs by using a kinase-selective proteome strategy. In total, we revealed quantitative information on 185 kinases expressed in the human CD4(+) T cell subsets. The majority of kinases was equally abundant in both T cell subsets, but 11 kinases were differentially expressed in Tregs. Most strikingly, Tregs showed an altered expression of cell cycle kinases including CDK6. Quantitative proteomics generates first comparative insight into the kinase complements of the CD4(+) Teff and Treg subset. Treg-specific expression pattern of 11 protein kinases substantiate the current opinion that TCR-mediated signaling cascades are altered in Tregs and further suggests that Tregs exhibit significant specificities in cell-cycle control and progression.en_GB
dc.language.isoenen
dc.rightsArchived with thanks to PloS oneen_GB
dc.titleFirst insight into the kinome of human regulatory T cells.en
dc.typeArticleen
dc.contributor.departmentDepartment of Molecular Structural Biology, Helmholtz-Zentrum für Infektionsforschung, Braunschweig, Germany.en_GB
dc.identifier.journalPloS oneen_GB

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