| Autor: |
Brownlie, Demi, von Kries, Andreas, Valenzano, Giampiero, Wild, Nicole, Yilmaz, Emel, Säfholm, Jesper, Al-Ameri, Mamdoh, Alici, Evren, Ljunggren, Hans-Gustaf, Schliemann, Igor, Aricak, Ozan, Haglund de Flon, Felix, Michaëlsson, Jakob, Marquardt, Nicole |
| Zdroj: |
OncoImmunology; December 2023, Vol. 12 Issue: 1 |
| Abstrakt: |
ABSTRACTLung cancer is a leading cause of cancer-related death worldwide. Despite recent advances in tissue immunology, little is known about the spatial distribution of tissue-resident lymphocyte subsets in lung tumors. Using high-parameter flow cytometry, we identified an accumulation of tissue-resident lymphocytes including tissue-resident NK (trNK) cells and CD8+tissue-resident memory T (TRM) cells toward the center of human non-small cell lung carcinomas (NSCLC). Chemokine receptor expression patterns indicated different modes of tumor-infiltration and/or residency between trNK cells and CD8+TRMcells. In contrast to CD8+TRMcells, trNK cells and ILCs generally expressed low levels of immune checkpoint receptors independent of location in the tumor. Additionally, granzyme expression in trNK cells and CD8+TRMcells was highest in the tumor center, and intratumoral CD49a+CD16−NK cells were functional and responded stronger to target cell stimulation than their CD49a−counterparts, indicating functional relevance of trNK cells in lung tumors.In summary, the present spatial mapping of lymphocyte subsets in human NSCLC provides novel insights into the composition and functionality of tissue-resident immune cells, suggesting a role for trNK cells and CD8+TRMcells in lung tumors and their potential relevance for future therapeutic approaches. |
| Databáze: |
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