| Autor: |
Taiki Moriya, Kurumi Kitagawa, Yuuki Hayakawa, Hiroaki Hemmi, Tsuneyasu Kaisho, Satoshi Ueha, Ryoyo Ikebuchi, Ippei Yasuda, Yasutaka Nakanishi, Tetsuya Honda, Koji Matsushima, Kenji Kabashima, Mizuki Ueda, Yutaka Kusumoto, Tatyana Chtanova, Michio Tomura |
| Jazyk: |
angličtina |
| Rok vydání: |
2021 |
| Předmět: |
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| Zdroj: |
iScience, Vol 24, Iss 5, Pp 102424- (2021) |
| Druh dokumentu: |
article |
| ISSN: |
2589-0042 |
| DOI: |
10.1016/j.isci.2021.102424 |
| Popis: |
Summary: Immunogenic tumor cell death enhances anti-tumor immunity. However, the mechanisms underlying this effect are incompletely understood. We established a system to induce tumor cell death in situ and investigated its effect on dendritic cell (DC) migration and T cell responses using intravital photolabeling in mice expressing KikGR photoconvertible protein. We demonstrate that tumor cell death induces phagocytosis of tumor cells by tumor-infiltrating (Ti)-DCs, and HMGB1-TLR4 and ATP-P2X7 receptor signaling-dependent Ti-DC emigration to draining lymph nodes (dLNs). This led to an increase in anti-tumor CD8+ T cells of memory precursor effector phenotype and secondary tumor growth inhibition in a CD103+ DC-dependent manner. However, combining tumor cell death induction with lipopolysaccharide treatment stimulated Ti-DC maturation and emigration to dLNs but did not improve tumor immunity. Thus, immunogenic tumor cell death enhances tumor immunity by increasing Ti-DC migration to dLNs where they promote anti-tumor T cell responses and tumor growth inhibition. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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