Abstract
Gamma delta (gammadelta) T cells infiltrate most human tumors, but current immunotherapies fail to exploit their in situ major histocompatibility complex-independent tumoricidal potential. Activation of gammadelta 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 alphabeta and gammadelta T cell responses remains unknown. Here, we report that the butyrophilin BTN3A1 inhibits tumor-reactive alphabeta T cell receptor activation by preventing segregation of N-glycosylated CD45 from the immune synapse. Notably, CD277-specific antibodies elicit coordinated restoration of alphabeta T cell effector activity and BTN2A1-dependent gammadelta lymphocyte cytotoxicity against BTN3A1(+) cancer cells, abrogating malignant progression. Targeting BTN3A1 therefore orchestrates cooperative killing of established tumors by alphabeta and gammadelta T cells and may present a treatment strategy for tumors resistant to existing immunotherapies.
Original language | American English |
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Pages (from-to) | 942-949 |
Number of pages | 8 |
Journal | Science |
Volume | 369 |
Issue number | 6506 |
DOIs | |
State | Published - 2020 |
Externally published | Yes |
Keywords
- Animals Antibodies, Monoclonal/therapeutic use Antigens, CD/genetics/*immunology Butyrophilins/*antagonists & inhibitors/genetics/*immunology Female Humans Immunotherapy/methods Intraepithelial Lymphocytes/*immunology Mice Mice, Transgenic Ovarian Neoplasms/*immunology/*therapy Receptors, Antigen, T-Cell, alpha-beta/immunology Tumor Cells, Cultured Xenograft Model Antitumor Assays
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Kappes, PhD, D. J. (Director) & Hua, MS, X. (Manager)
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