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 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 - Aug 21 2020 |
Externally published | Yes |
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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Kappes, PhD, D. J. (Director) & Hua, MS, X. (Manager)
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