The T cell receptor sequence influences the likelihood of T cell memory formation

Cell Rep. 2025 Jan 28;44(1):115098. doi: 10.1016/j.celrep.2024.115098. Epub 2024 Dec 27.

Abstract

The amino acid sequence of the T cell receptor (TCR) varies between T cells of an individual's immune system. Particular TCR residues nearly guarantee mucosal-associated invariant T (MAIT) and natural killer T (NKT) cell transcriptional fates. To define how the TCR sequence affects T cell fates, we analyze the paired αβTCR sequence and transcriptome of 961,531 single cells. We find that hydrophobic complementarity-determining region (CDR)3 residues promote regulatory T cell fates in both the CD8 and CD4 lineages. Most strikingly, we find a set of TCR sequence features that promote the T cell transition from naive to memory. We quantify the extent of these features through our TCR scoring function "TCR-mem." Using TCR transduction experiments, we demonstrate that increased TCR-mem promotes T cell activation, even among T cells that recognize the same antigen. Our results reveal a common set of TCR sequence features that enable T cell activation and immunological memory.

Keywords: CP: Immunology; T-cells; TCR; activation; immunology; memory; transcriptomics.

Publication types

  • Research Support, N.I.H., Extramural
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Amino Acid Sequence
  • Animals
  • CD8-Positive T-Lymphocytes / immunology
  • Complementarity Determining Regions / immunology
  • Immunologic Memory* / immunology
  • Lymphocyte Activation / immunology
  • Memory T Cells* / immunology
  • Mice
  • Mice, Inbred C57BL
  • Receptors, Antigen, T-Cell* / chemistry
  • Receptors, Antigen, T-Cell* / genetics
  • Receptors, Antigen, T-Cell* / immunology
  • Receptors, Antigen, T-Cell* / metabolism
  • Receptors, Antigen, T-Cell, alpha-beta

Substances

  • Receptors, Antigen, T-Cell
  • Complementarity Determining Regions
  • Receptors, Antigen, T-Cell, alpha-beta