Abstract
Fusion genes including NPM-ALK can promote T-cell transformation, but the signals required to drive a healthy T cell to become malignant remain undefined. In this study, we introduce NPM-ALK into primary human T cells and demonstrate induction of the epithelial-to-mesenchymal transition (EMT) program, attenuation of most T-cell effector programs, reemergence of an immature epigenomic profile, and dynamic regulation of c-Myc, E2F, and PI3K/mTOR signaling pathways early during transformation. A mutant of NPM-ALK failed to bind several signaling complexes including GRB2/SOS, SHC1, SHC4, and UBASH3B and was unable to transform T cells. Finally, T-cell receptor (TCR)-generated signals were required to achieve T-cell transformation, explaining how healthy individuals can harbor T cells with NPM-ALK translocations. These findings describe the fundamental mechanisms of NPM-ALK-mediated oncogenesis and may serve as a model to better understand factors that regulate tumor formation.
Original language | English |
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Pages (from-to) | 3241-3254 |
Number of pages | 14 |
Journal | Cancer Research |
Volume | 81 |
Issue number | 12 |
DOIs | |
State | Published - Jun 2021 |
Keywords
- Apoptosis
- Cell Dedifferentiation
- Cell Proliferation
- Cell Transformation, Neoplastic/immunology
- Cellular Reprogramming
- Humans
- Lymphoma, Large-Cell, Anaplastic/genetics
- Phosphorylation
- Protein-Tyrosine Kinases/genetics
- Receptors, Antigen, T-Cell/genetics
- T-Lymphocytes/immunology
- TOR Serine-Threonine Kinases/genetics
- Tumor Cells, Cultured