Global survey of human T leukemic cells by integrating proteomics and transcriptomics profiling

Area of Science:

• Proteomics
• Cellular Biology
• Systems Biology

Background:

• Mammalian cell signaling requires global protein surveys.
• Human Jurkat T cells are crucial for T cell signaling research.
• A comprehensive proteomics survey was lacking for Jurkat T cells.

Purpose of the Study:

• To conduct a comprehensive proteomics survey of human Jurkat T leukemic cells.
• To establish a protein expression dataset for T cell signaling.
• To enable systems-level insights into T cell information flow.

Main Methods:

• Subcellular fractionation
• Multiple protein enrichment techniques
• Replicate tandem mass spectrometry analyses
• Comparison with genome-wide mRNA expression

Main Results:

• Identified 6471 unique gene products with high confidence.
• 98% of identified gene products had corresponding detected transcripts.
• Assigned subcellular localization for 2241 proteins, including 792 uncharacterized ones.

Conclusions:

• The generated proteome landscape provides a platform for understanding organelle composition and cellular functions in human T cells.
• This study significantly advances the proteomic characterization of Jurkat T cells.
• The findings support systems-level analysis of T cell signaling pathways.