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- Title
Non-Professional Phagocytosis Increases in Melanoma Cells and Tissues with Increasing E-Cadherin Expression.
- Authors
Unseld, Luzie Helene; Hildebrand, Laura S.; Putz, Florian; Büttner-Herold, Maike; Daniel, Christoph; Fietkau, Rainer; Distel, Luitpold Valentin
- Abstract
Non-professional phagocytosis in cancer has been increasingly studied in recent decades. In malignant melanoma metastasis, cell-in-cell structures have been described as a sign of cell cannibalism. To date, only low rates of cell-in-cell structures have been described in patients with malignant melanoma. To investigate these findings further, we examined twelve primary melanoma cell lines in both adherent and suspended co-incubation for evidence of engulfment. In addition, 88 malignant melanoma biopsies and 16 healthy tissue samples were evaluated. E-cadherin levels were determined in the cell lines and tissues. All primary melanoma cell lines were capable of phagocytosis, and phagocytosis increased when cells were in suspension during co-incubation. Cell-in-cell structures were also detected in most of the tissue samples. Early T stages and increasingly advanced N and M stages have correspondingly lower rates of cell-in-cell structures. Non-professional phagocytosis was also present in normal skin tissue. Non-professional phagocytosis appears to be a ubiquitous mechanism in malignant melanoma. The absence of phagocytosis in metastases may be one reason for the high rate of metastasis in malignant melanoma.
- Subjects
PHAGOCYTOSIS; MICROPHTHALMIA-associated transcription factor; CADHERINS; MELANOMA; CELL suspensions; CELL lines
- Publication
Current Oncology, 2023, Vol 30, Issue 8, p7542
- ISSN
1198-0052
- Publication type
Article
- DOI
10.3390/curroncol30080547