CD4-CTL effectors share TCR clonotypes with CD4-CTL precursors.

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Presentation transcript:

CD4-CTL effectors share TCR clonotypes with CD4-CTL precursors. CD4-CTL effectors share TCR clonotypes with CD4-CTL precursors. (A) Clonotype network graphs of single cells from TEMRA subsets from donors #12 (top) and #3 (bottom). Each circle represents a single cell; the reconstructed TCRα and TCRβ sequences for each cell are depicted as red- and blue-colored bars, respectively, inside each circle. Dark- and light-colored bars represent productive and nonproductive TCRs, respectively. Red connecting lines indicate shared TCRα sequences; blue lines indicate shared TCRβ sequences. Red arrow indicates a precursor cell. Purple dashed line indicates a cluster of cells with intermixed precursor and effector cells sharing the same clonotype. (B) Cell-state hierarchy map constructed for precursor cluster TEMRA (light green), effector cluster TEMRA (orange), TCM (brown), and TEM (yellow) cells from donor #12. The network shows connection (black line) between cells (circle). (C and D) TCR-seq assays in TCM, TEM, IL-7Rhigh TEMRA (CD4-CTL precursors), and the IL-7R− TEMRA (CD4-CTL effectors) subset from 14 donors; bar graphs show the Shannon-Wiener diversity index obtained using V(D)J tools (C) and percentage of expanded TCRβ clonotypes (clonotype frequency ≥3) (D); error bars are mean ± SEM from 13 to 14 donors. *P < 0.05, **P < 0.005, and ***P < 0.001 from Student’s paired two-tailed t test; ns, not significant. (E) Pie charts (left) show the distribution of TCRβ clonotypes based on clonal frequency: the most clonally expanded (top expanded clone; blue) and the next most clonally expanded (second most expanded clone; orange), as well as the rest of the expanded (≥3) (all other expanded clones; yellow) and nonexpanded clonotypes (frequency ≤2; gray). The pie charts (middle) show the distribution of shared (overlapping) expanded effector TCRβ clonotypes (frequency ≥3) within the other indicated subsets. The graphs (right) show the percentage overlap of the most expanded TCRβ clonotype from effector subset with the other indicated subsets. (F) Pie charts (left) show the distribution of TCRβ clonotypes based on clonal frequency: the most clonally expanded (top expanded clone; blue) and the next most clonally expanded (second most expanded clone; orange), as well as the rest of the expanded (≥3) (all other expanded clones; yellow) and nonexpanded clonotypes (frequency ≤2; gray) in V2 samples from the longitudinal samples. The pie charts (middle) show the distribution of shared (overlapping) expanded V2 effector clonotypes (frequency ≥3) within other subsets from V1 (V2 samples). The graphs (right) show the percentage overlap of the most expanded TCRβ clonotype from the effector subset at V2 with other subsets at V1. Veena S. Patil et al. Sci. Immunol. 2018;3:eaan8664 Copyright © 2018 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works