1. Dual-targeted near-infrared photoimmunotherapy for esophageal cancer and cancer-associated fibroblasts in the tumor microenvironment
- Author
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Hiroaki Sato, Kazuhiro Noma, Toshiaki Ohara, Kento Kawasaki, Masaaki Akai, Teruki Kobayashi, Noriyuki Nishiwaki, Toru Narusaka, Satoshi Komoto, Hajime Kashima, Yuki Katsura, Takuya Kato, Satoru Kikuchi, Hiroshi Tazawa, Shunsuke Kagawa, Yasuhiro Shirakawa, Hisataka Kobayashi, and Toshiyoshi Fujiwara
- Subjects
Medicine ,Science - Abstract
Abstract Cancer-associated fibroblasts (CAFs) play a significant role in tumor progression within the tumor microenvironment. Previously, we used near-infrared photoimmunotherapy (NIR-PIT), a next-generation cancer cell-targeted phototherapy, to establish CAF-targeted NIR-PIT. In this study, we investigated whether dual-targeted NIR-PIT, targeting cancer cells and CAFs, could be a therapeutic strategy. A total of 132 cases of esophageal cancer were analyzed for epidermal growth factor receptor (EGFR), human epidermal growth factor 2 (HER2), and fibroblast activation protein (FAP) expression using immunohistochemistry. Human esophageal cancer cells and CAFs were co-cultured and treated with single- or dual-targeted NIR-PIT in vitro. These cells were co-inoculated into BALB/c-nu/nu mice and the tumors were treated with single-targeted NIR-PIT or dual-targeted NIR-PIT in vivo. Survival analysis showed FAP- or EGFR-high patients had worse survival than patients with low expression of FAP or EGFR (log-rank, P
- Published
- 2022
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