Data on interleukin (IL)-2- and IL-15-dependent changes in IL-2Rβ and IL-2Rγ complexes

Area of Science:

• Immunology
• Proteomics
• Cell Biology

Background:

• Interleukin-2 receptor beta (IL-2Rβ) and gamma (IL-2Rγ) chains are critical for T-cell activation and function.
• Understanding the protein complexes associated with these receptors is key to deciphering immune responses.

Purpose of the Study:

• To comprehensively identify proteins interacting with IL-2Rβ and IL-2Rγ in activated T-cells.
• To characterize site-specific phosphorylation events on IL-2Rβ and IL-2Rγ.
• To investigate the functional role of specific phosphorylation sites in protein recruitment.

Main Methods:

• SILAC-based quantitative proteomics was employed to analyze protein associations.
• Mass spectrometry was used for phosphoproteomic analysis to identify phosphorylation sites.
• Functional assays were performed to assess the impact of phosphorylation on protein recruitment.

Main Results:

• Detailed datasets of proteins associating with IL-2Rβ and IL-2Rγ in IL-2/IL-15 stimulated T-cells versus resting cells were generated.
• Quantitative data on site-specific phosphorylation events on IL-2Rβ and IL-2Rγ were obtained.
• Four specific phosphorylation sites were demonstrated to mediate the recruitment of particular proteins.

Conclusions:

• The study provides a comprehensive proteomic and phosphoproteomic landscape of IL-2Rβ and IL-2Rγ signaling in T-cells.
• Specific phosphorylation events on IL-2Rβ and IL-2Rγ play a critical role in regulating receptor-associated protein complex assembly.
• These findings enhance the understanding of T-cell activation pathways mediated by IL-2 and IL-15.