Tumor-derived semaphorin 4A improves PD-1-blocking antibody efficacy by enhancing CD8+ T cell cytotoxicity and proliferation
- Sci Adv. 2023 May 19;9(20):eade0718. doi: 10.1126/sciadv.ade0718.
- 1. Department of Respiratory Medicine and Clinical Immunology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.
- 2. Department of Immunology and Molecular Medicine, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.
- 3. Department of Immunopathology, World Premier International Research Center (WPI), Immunology Frontier Research Center (IFReC), Osaka University, Suita, Osaka, Japan.
- 4. Division of Cancer Immunology, Research Institute/Exploratory Oncology Research and Clinical Trial Center (EPOC), National Cancer Center, Kashiwa,Chiba, and Tokyo, Japan.
- 5. Department of Otorhinolaryngology-Head and Neck Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.
- 6. Department of Thoracic Oncology, National Hospital Organization, Osaka Toneyama Medical Center, Toyonaka, Osaka, Japan.
- 7. Department of Thoracic Oncology, Osaka International Cancer Institute, Osaka, Japan.
- 8. KOTAI Biotechnologies Inc., Suita, Osaka, Japan.
- 9. Department of Cellular Immunology, Research Institute for Microbial Diseases (RIMD), Osaka University, Suita, Osaka, Japan.
- 10. Department of Pathology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.
- 11. Laboratory of Molecular Immunology, WPI, IFReC, Osaka University, Suita, Osaka, Japan.
- 12. Department of Molecular Immunology, RIMD, Osaka University, Suita, Osaka, Japan.
- 13. Single Cell Genomics, Human Immunology, WPI, IFReC, Osaka University, Suita, Osaka, Japan.
- 14. Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives (OTRI), Osaka University, Suita, Osaka, Japan.
- 15. Center for Infectious Diseases for Education and Research (CiDER), Osaka University, Suita, Osaka, Japan.
- 16. Laboratory of Host Defense, WPI, IFReC, Osaka University, Suita, Osaka, Japan.
- 17. Department of Pathology, University of Texas Southwestern Medical Center, Dallas, TX, USA.
- 18. Department of Hematology and Oncology, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.
- 19. Laboratory of Cellular Immunotherapy, WPI, IFReC, Osaka University, Suita, Osaka, Japan.
- 20. Department of General Thoracic Surgery, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan.
- 21. Japan Agency for Medical Research and Development-Core Research for Evolutional Science and Technology (AMED-CREST), Osaka University, Suita, Osaka, Japan.
- 22. Center for Advanced Modalities and DDS (CAMaD), Osaka University, Suita, Osaka, Japan.
Immune checkpoint inhibitors (ICIs) have caused revolutionary changes in Cancer treatment, but low response rates remain a challenge. Semaphorin 4A (Sema4A) modulates the immune system through multiple mechanisms in mice, although the role of human Sema4A in the tumor microenvironment remains unclear. This study demonstrates that histologically Sema4A-positive non-small cell lung Cancer (NSCLC) responded significantly better to anti-programmed cell death 1 (PD-1) antibody than Sema4A-negative NSCLC. Intriguingly, SEMA4A expression in human NSCLC was mainly derived from tumor cells and was associated with T cell activation. Sema4A promoted cytotoxicity and proliferation of tumor-specific CD8+ T cells without terminal exhaustion by enhancing mammalian target of rapamycin complex 1 and polyamine synthesis, which led to improved efficacy of PD-1 inhibitors in murine models. Improved T cell activation by recombinant Sema4A was also confirmed using isolated tumor-infiltrating T cells from patients with Cancer. Thus, Sema4A might be a promising therapeutic target and biomarker for predicting and promoting ICI efficacy.
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