Arginase-1 specific CD8+ T cells react toward malignant and regulatory myeloid cells
| Autor: | Hannah Jorinde Glöckner, Evelina Martinenaite, Thomas Landkildehus Lisle, Jacob Grauslund, Shamaila Ahmad, Özcan Met, Per Thor Straten, Mads Hald Andersen |
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| Jazyk: | angličtina |
| Rok vydání: | 2024 |
| Předmět: | |
| Zdroj: | OncoImmunology, Vol 13, Iss 1 (2024) |
| Druh dokumentu: | article |
| ISSN: | 2162402X 2162-402X |
| DOI: | 10.1080/2162402X.2024.2318053 |
| Popis: | ABSTRACTArginase-1 (Arg1) is expressed by regulatory myeloid cells in the tumor microenvironment (TME), where they play a pro-tumorigenic and T-cell suppressive role. Arg1-specific CD4+ and CD8+ memory T cells have been observed in both healthy individuals and cancer patients. However, while the function of anti-regulatory Arg1-specific CD4+ T cells has been characterized, our knowledge of CD8+ Arg1-specific T cells is only scarce. In the current study, we describe the immune-modulatory capabilities of CD8+ Arg1-specific T cells. We generated CD8+ Arg1-specific T cell clones to target Arg1-expressing myeloid cells. Our results demonstrate that these T cells recognize both malignant and nonmalignant regulatory myeloid cells in an Arg1-expression-dependent manner. Notably, Arg1-specific CD8+ T cells possess cytolytic effector capabilities. Immune modulatory vaccines (IMVs) represent a novel treatment modality for cancer. The activation of Arg1-specific CD8+ T cells through Arg1-based IMVs can contribute to the modulatory effects of this treatment strategy. |
| Databáze: | Directory of Open Access Journals |
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