Acute exercise mobilizes NKT-like cells with a cytotoxic transcriptomic profile but does not augment the potency of cytokine-induced killer (CIK) cells

Tiffany M. Zúñiga, Forrest L. Baker, Kyle A. Smith, Helena Batatinha, Branden Lau, Michael P. Gustafson, Emmanuel Katsanis, Richard J. Simpson

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

CD3+/CD56+ Natural killer (NK) cell-like T-cells (NKT-like cells) represent <5% of blood lymphocytes, display a cytotoxic phenotype, and can kill various cancers. NKT-like cells can be expanded ex vivo into cytokine-induced killer (CIK) cells, however this therapeutic cell product has had mixed results against hematological malignancies in clinical trials. The aim of this study was to determine if NKT-like cells mobilized during acute cycling exercise could be used to generate more potent anti-tumor CIK cells from healthy donors. An acute exercise bout increased NKT-like cell numbers in blood 2-fold. Single cell RNA sequencing revealed that exercise mobilized NKT-like cells have an upregulation of genes and transcriptomic programs associated with enhanced anti-tumor activity, including cytotoxicity, cytokine responsiveness, and migration. Exercise, however, did not augment the ex vivo expansion of CIK cells or alter their surface phenotypes after 21-days of culture. CIK cells expanded at rest, during exercise (at 60% and 80% VO2max) or after (1h post) were equally capable of killing leukemia, lymphoma, and multiple myeloma target cells with and without cytokine (IL-2) and antibody (OKT3) priming in vitro. We conclude that acute exercise in healthy donors mobilizes NKT-like cells with an upregulation of transcriptomic programs involved in anti-tumor activity, but does not augment the ex vivo expansion of CIK cells.

Original languageEnglish (US)
Article number938106
JournalFrontiers in immunology
Volume13
DOIs
StatePublished - Sep 14 2022

Keywords

  • cancer
  • cell therapy
  • cytotoxicity
  • donor lymphocyte infusions
  • exercise immunology
  • hematological malignancies
  • physical activity
  • single cell RNA sequencing

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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