Journal: bioRxiv
Article Title: Differential proteomic and metabolic remodelling of CD4⁺ and CD8⁺ T cells in mesenteric lymph nodes during colitis-associated colorectal cancer
doi: 10.64898/2025.12.26.696593
Figure Lengend Snippet: CD4 + and CD8 + T cells were sorted from mLN at days 0 (Healthy), 15 (Colitis) and 60 (Cancer) from AOM/DSS-treated mice and their proteomes analysed by quantitative mass spectrometry. (A) Heat map of proteins involved in the tricarboxylic acid (TCA) cycle identified in CD4 + and CD8 + T cells proteomes during CAC progression. BR, biological replicate. Relative protein abundance is graded from low (blue) to high (red) to allow comparisons. (B) Expression profiles of key enzymes involved in the TCA/Krebs cycle in T cells in healthy, colitis, and cancer mice. Data are represented as protein copy numbers per cell (Molecules (n°)) in CD4 + and CD8 + T cells. Each dot represents a pool of three mice (n=3 pools). (C-D) (C) Total mitochondria mass and (D) Total OxPhos-related protein mass per cell in CD4 + (left) and CD8 + (right) T cells. Each dot represents a pool of three mice (n=3 pools). (E) Heat map of proteins involved in oxidative phosphorylation process (GO:0006119) identified in CD4 + T cells proteomes in healthy, colitis, and cancer. BR, biological replicate. Relative protein abundance is graded from low (blue) to high (red) to allow comparisons. (F) Protein copy numbers per cell (Molecules (n°)) of the ATP synthase proteins Atp5f1a, Atp5f1b, Atp5f1c, Atp5f1d and Atp5f1e in CD4 + T cells. Each dot represents a pool of three mice (n=3 pools). (G) Real-time monitorization of oxygen consumption rate (OCR) in CD4 + (left) and CD8 + (right) T cells (n= 3-5 mice per condition). Arrows indicate the time of injection of oligomycin, FCCP and rotenone/antimycin A. (H) OCR profile of CD4 + (left) and CD8 + (right) T cells in basal state in healthy, colitis, and CAC (n= 3-5 mice per condition). (I) Spare respiratory capacity (SRC) profile of CD4 + (left) and CD8 + (right) T cells in healthy, colitis and cancer (n= 3-5 mice per condition). All the data are shown as mean ± SEM. In all panels, ns = non-significant, * p ≤ 0.05, ** p ≤ 0.01, *** p ≤ 0.001.
Article Snippet: On day 6 after AOM injection, mice underwent a 5-day treatment with 2% DSS (w/v) (MW 36,000-50,000 Da; MP Biomedicals, 160110) in drinking water, followed by 15 days administration of normal drinking water.
Techniques: Mass Spectrometry, Quantitative Proteomics, Expressing, Phospho-proteomics, Injection