Characterizing CD8+ TEMRA Cells in CP/CPPS Patients: Insights from Targeted Single-Cell Transcriptomic and Functional...

Area of Science:

• Immunology
• Cell Biology
• Urology

Background:

• Chronic prostatitis/chronic pelvic pain syndrome (CP/CPPS) is a condition with poorly understood immune involvement.
• The specific role of CD8+ T effector memory RA (TEMRA) cells in CP/CPPS pathogenesis remains largely unexplored in scientific literature.

Purpose of the Study:

• To investigate the molecular and functional characteristics of CD8+ TEMRA cells in patients with CP/CPPS.
• To identify potential therapeutic targets and biomarkers associated with CP/CPPS by analyzing T-cell subsets.

Main Methods:

• Single-cell RNA sequencing (scRNA-seq) of peripheral blood mononuclear cells (PBMCs) from CP/CPPS patients and healthy controls.
• Pseudotime analysis for T-cell differentiation trajectories, CellChat for cell-cell communication, and SCENIC for transcription factor identification.
• Flow cytometry validation of identified immune cell functions and cytokine profiles.

Main Results:

• CD8+ TEMRA cells in CP/CPPS patients exhibit enriched cytokine-mediated signaling pathways, particularly elevated TNF signaling.
• CellChat analysis revealed enhanced ligand-receptor interactions in CD8+ TEMRA cells from CP/CPPS patients compared to controls.
• Flow cytometry confirmed a heightened pro-inflammatory cytokine profile in patients, supporting the role of TEMRA cells in CP/CPPS pathogenesis.

Conclusions:

• CD8+ TEMRA cells play a significant role in CP/CPPS, characterized by increased TNF signaling and pro-inflammatory factor expression.
• These findings highlight CD8+ TEMRA cells as potential biomarkers for CP/CPPS.
• The study opens new avenues for therapeutic interventions targeting these specific immune cells in CP/CPPS.