Dynamic CD8+ T cell responses to cancer immunotherapy in human regional lymph nodes are disrupted in metastatic lymph nodes

Cell. 2023 Mar 16;186(6):1127-1143.e18. doi: 10.1016/j.cell.2023.02.021.

Abstract

CD8+ T cell responses are critical for anti-tumor immunity. While extensively profiled in the tumor microenvironment, recent studies in mice identified responses in lymph nodes (LNs) as essential; however, the role of LNs in human cancer patients remains unknown. We examined CD8+ T cells in human head and neck squamous cell carcinomas, regional LNs, and blood using mass cytometry, single-cell genomics, and multiplexed ion beam imaging. We identified progenitor exhausted CD8+ T cells (Tpex) that were abundant in uninvolved LN and clonally related to terminally exhausted cells in the tumor. After anti-PD-L1 immunotherapy, Tpex in uninvolved LNs reduced in frequency but localized near dendritic cells and proliferating intermediate-exhausted CD8+ T cells (Tex-int), consistent with activation and differentiation. LN responses coincided with increased circulating Tex-int. In metastatic LNs, these response hallmarks were impaired, with immunosuppressive cellular niches. Our results identify important roles for LNs in anti-tumor immune responses in humans.

Trial registration: ClinicalTrials.gov NCT03708224.

Keywords: CD8(+) T cells; T cell exhaustion; cancer immunotherapy; immune checkpoint blockade; lymph nodes.

Publication types

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

MeSH terms

  • Animals
  • CD8-Positive T-Lymphocytes*
  • Humans
  • Immunotherapy / methods
  • Lymph Nodes
  • Mice
  • Neoplasms* / pathology
  • Neoplasms* / therapy
  • Tumor Microenvironment

Associated data

  • ClinicalTrials.gov/NCT03708224