BTN3A1 governs antitumor responses by coordinating αβ and γδ T cells

K. K. Payne, J. A. Mine, S. Biswas, R. A. Chaurio, A. Perales-Puchalt, C. M. Anadon, T. L. Costich, C. M. Harro, J. Walrath, Q. Ming, E. Tcyganov, A. L. Buras, K. E. Rigolizzo, G. Mandal, J. Lajoie, M. Ophir, J. Tchou, D. Marchion, V. C. Luca, P. BobrowiczB. McLaughlin, U. Eskiocak, M. Schmidt, J. R. Cubillos-Ruiz, P. C. Rodriguez, D. I. Gabrilovich, J. R. Conejo-Garcia

Research output: Contribution to journalArticlepeer-review

103 Scopus citations

Abstract

Gamma delta (γδ) T cells infiltrate most human tumors, but current immunotherapies fail to exploit their in situ major histocompatibility complex-independent tumoricidal potential. Activation of γδ T cells can be elicited by butyrophilin and butyrophilin-like molecules that are structurally similar to the immunosuppressive B7 family members, yet how they regulate and coordinate αβ and γδ T cell responses remains unknown. Here, we report that the butyrophilin BTN3A1 inhibits tumor-reactive αβ T cell receptor activation by preventing segregation of N-glycosylated CD45 from the immune synapse. Notably, CD277-specific antibodies elicit coordinated restoration of αβ T cell effector activity and BTN2A1-dependent γδ lymphocyte cytotoxicity against BTN3A1 + cancer cells, abrogating malignant progression. Targeting BTN3A1 therefore orchestrates cooperative killing of established tumors by αβ and γδ T cells and may present a treatment strategy for tumors resistant to existing immunotherapies.

Original languageAmerican English
Pages (from-to)942-949
Number of pages8
JournalScience
Volume369
Issue number6506
DOIs
StatePublished - Aug 21 2020
Externally publishedYes

Keywords

  • Animals
  • Antibodies, Monoclonal/therapeutic use
  • Antigens, CD/genetics
  • Butyrophilins/antagonists & inhibitors
  • Female
  • Humans
  • Immunotherapy/methods
  • Intraepithelial Lymphocytes/immunology
  • Mice
  • Mice, Transgenic
  • Ovarian Neoplasms/immunology
  • Receptors, Antigen, T-Cell, alpha-beta/immunology
  • Tumor Cells, Cultured
  • Xenograft Model Antitumor Assays

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