The increased IL-17-producing γδT cells promote tumor cell proliferation and migration in neuroblastoma

Clin Immunol. 2020 Feb:211:108343. doi: 10.1016/j.clim.2020.108343. Epub 2020 Jan 10.

Abstract

Neuroblastoma (NB) is the most common solid extracranial malignancy in children with a considerable chance of metastatic progression. Prevalent evidence supports the anti-tumor role of γδT cells and these cells have been testing in clinical trials for constraining tumor growth. A small subpopulation of γδT cells releasing IL-17, however, were demonstrated to exert tumor-promoting effects in many aspects. In this study, we found an augment of IL-17+ γδT cells both in in vitro PAM-stimulated γδT-cell expanding culture and circulating γδT cells in NB patients. These patient-origin cells expanded in vitro by PAM in the presence of IL-17 polarizing condition were shown to promote the proliferation and migration of NB cells. Furthermore, an intrinsic preference for IL-17 polarization in NB γδT cells was revealed by mRNA microarray and Western Blot, which pointed to an up-regulated expression of multiple Th17-development related genes in addition to an increased phosphorylation level of STAT3.

Keywords: IL-17-producing γδT cells; Migration; Neuroblastoma; Proliferation.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Cell Line, Tumor
  • Cell Movement
  • Cell Proliferation
  • Child, Preschool
  • Female
  • Humans
  • Interleukin-17 / immunology*
  • Intraepithelial Lymphocytes / immunology*
  • Male
  • Neuroblastoma / immunology*
  • Neuroblastoma / pathology

Substances

  • Interleukin-17