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Hokkaido University Collection of Scholarly and Academic Papers >
Graduate School of Dental Medicine / Faculty of Dental Medicine >
Peer-reviewed Journal Articles, etc >
Angiogenic inhibitor pre-administration improves the therapeutic effects of immunotherapy
| Title: | Angiogenic inhibitor pre-administration improves the therapeutic effects of immunotherapy |
| Authors: | Sato, Mineyoshi Browse this author | | Maishi, Nako Browse this author →KAKEN DB | | Hida, Yasuhiro Browse this author →KAKEN DB | | Yanagawa-Matsuda, Aya Browse this author →KAKEN DB | | Alam, Mohammad Towfik Browse this author →KAKEN DB | | Sakakibara-Konishi, Jun Browse this author →KAKEN DB | | Nam, Jin-Min Browse this author →KAKEN DB | | Onodera, Yasuhito Browse this author →KAKEN DB | | Konno, Satoshi Browse this author →KAKEN DB | | Hida, Kyoko Browse this author →KAKEN DB |
| Keywords: | angiogenesis inhibitors | | immune checkpoint inhibitors | | immunotherapy | | lung neoplasms | | tumor microenvironment |
| Issue Date: | 19-Feb-2023 |
| Publisher: | John Wiley & Sons |
| Journal Title: | Cancer medicine |
| Publisher DOI: | 10.1002/cam4.5696 |
| PMID: | 36808261 |
| Abstract: | In lung cancer, immune checkpoint inhibitors (ICIs) are often inadequate for tumor growth inhibition. Angiogenic inhibitors (AIs) are required to normalize tumor vasculature for improved immune cell infiltration. However, in clinical practice, ICIs and cytotoxic antineoplastic agents are simultaneously administered with an AI when tumor vessels are abnormal. Therefore, we examined the effects of pre-administering an AI for lung cancer immunotherapy in a mouse lung cancer model. Using DC101, an anti-vascular endothelial growth factor receptor 2 (VEGFR2) monoclonal antibody, a murine subcutaneous Lewis lung cancer (LLC) model was used to determine the timing of vascular normalization. Microvessel density (MVD), pericyte coverage, tissue hypoxia, and CD8-positive cell infiltration were analyzed. The effects of an ICI and paclitaxel after DC101 pre-administration were investigated. On Day 3, increased pericyte coverage and alleviated tumor hypoxia represented the highest vascular normalization. CD8+ T-cell infiltration was also highest on Day 3. When combined with an ICI, DC101 pre-administration significantly reduced PD-L1 expression. When combined with an ICI and paclitaxel, only DC101 pre-administration significantly inhibited tumor growth, but simultaneous administration did not. AI pre-administration, and not simultaneous administration, may increase the therapeutic effects of ICIs due to improved immune cell infiltration. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/88921 |
| Appears in Collections: | 歯学院・歯学研究院 (Graduate School of Dental Medicine / Faculty of Dental Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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