ArticleCancer research and treatment2026
IFITM1 Influences Natural Killer Cell-Mediated Cytotoxicity by Modulation of HLA Class I Expression in Triple-Negative Breast Cancer Cells.
Article in Cancer research and treatment, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
- Interferon-induced transmembrane (IFITM) proteins at the tumour-immune interface: A four-axis framework for their context-dependent roles.Clinical and translational medicine · 2026Review
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Authors and funding
10 authors.
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Abstract
Purpose: Interferon-induced transmembrane protein 1 (IFITM1) is associated with a poor prognosis in triple-negative breast cancer (TNBC); however, the mechanisms by which IFITM1 contributes to oncogenesis in TNBC are unclear. Materials and Methods: We established two stable cell lines: IFITM1-overexpressing cell line (MB-231-IFITM1-OE) and IFITM1 knockdown cell line (BT-20-IFITM1-KD). The transcriptional activity of β-catenin and the cytotoxic activity of natural killer (NK) cells were evaluated using the luciferase assay and the lactate dehydrogenase cytotoxicity assay. The expression of IFITM1, β-catenin, and human leukocyte antigen (HLA) class I was assessed by immunohistochemistry in patients with TNBC. Results: Knockdown of IFITM1 in BT-20 cells reduced cell proliferation and ectopically expressed IFITM1 in MB-231 cells increased cell proliferation. RNA sequencing analysis revealed that IFITM1 expression positively correlated with the Wnt/β-catenin signaling pathway and NK cell-mediated cytotoxicity. MB-231-IFITM1-OE cells showed increased β-catenin transcriptional activity and NK cell cytotoxic activity compared with controls, while transient knockdown of IFITM1 in MB-231-IFITM1-OE cells led to a decrease in β-catenin transcriptional activity and NK cell cytotoxic activity. MB-231-IFITM1-OE cells exhibited decreased HLA class I expression, which may have contributed to their increased susceptibility to NK cell-mediated lysis. β-catenin or JAK inhibitor reduced NK cell-mediated cytotoxicity via upregulation of HLA class I. Patients with IFITM1 overexpression showed a trend toward increased β-catenin positivity and HLA class I negativity. Conclusion: IFITM1 overexpression was associated with Wnt/β-catenin signaling and NK cell-mediated cytotoxicity via downregulation of HLA class I in TNBC cells, suggesting that IFITM1 might have immunoregulatory effects on the tumor microenvironment.
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