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Updated: Mar 29, 2026

Intramucosal Inoculation of Squamous Cell Carcinoma Cells in Mice for Tumor Immune Profiling and Treatment Response Assessment
Published on: April 22, 2019
OX40 signaling in head and neck squamous cell carcinoma: Overcoming immunosuppression in the tumor microenvironment
R Bryan Bell1, Rom S Leidner2, Marka R Crittenden2
1Robert W. Franz Cancer Research Center in the Earle A. Chiles Research Institute at the Providence Cancer Center, 4805 NE Glisan St. Suite 2N35, Portland, OR 97213, United States; Providence Oral, Head and Neck Cancer Program and Clinic, Providence Cancer Center, Providence Portland Medical Center, 4805 NE Glisan St. Suite 6N50, Portland, OR 97213, United States; Oregon Health and Science University, 3181 SW Sam Jackson Park Rd., Portland, OR 97239, United States; Head and Neck Institute, 1849 NW Kearney, Suite 300, Portland, OR 97209, United States.
Abstract:
OX40 is a member of the tumor necrosis factor (TNF) receptor family and a potent co-stimulatory pathway that when triggered can enhance T-cell memory, proliferation and anti-tumor activity in patients with metastatic cancer. Ongoing investigations at our institution have demonstrated that OX40 expressing T cells are found in abundance in the tumors of patients with advanced stage head and neck squamous cell carcinoma (HNSCC). This has led to the initiation of human clinical trials investigating OX40-directed therapy for patients with HNSCC in both the metastatic and curative setting. The purpose of this review is to explore what is known about OX40 signaling and discuss how this pathway potentially can be modulated to improve outcome for patients with HNSCC.
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