Journal: Frontiers in Oncology
Article Title: Clinical implementation of a one-step no-wash flow cytometry method allows for real-time monitoring of patients treated with autologous CAR-T cells
doi: 10.3389/fonc.2026.1774431
Figure Lengend Snippet: Gating strategy for the single-step method. Absolute counting beads were excluded based on scatter and fluorescence properties. Dead cells were excluded using 7-aminoactinomycin D (7-AAD). CD45-positive leukocytes were selected, and lymphocytes were identified according to side scatter (SSC) characteristics. CD3-positive T cells were gated, and CAR-T cells were defined as viable CD45+/CD3+/CAR+ events using directly fluorochrome-conjugated CAR detection reagents (CD19 or BCMA). CD4 and CD8 subpopulations were subsequently identified within the CAR-positive T-cell compartment. Absolute quantification was calculated using TruCount beads according to the manufacturer’s formula.
Article Snippet: 100 μL of blood sample were stained with 5μL of CD19 CAR-T detection reagent (130-129–550 Miltenyi Biotec, Bergisch Gladbach, Germany) during 10 minutes at Room Temperature (RT) in the dark.
Techniques: Fluorescence, Quantitative Proteomics