NPM-ALK-induced reprogramming of mature TCR-stimulated T cells results in dedifferentiation and malignant transformation

Jan M. Pawlicki, David L. Cookmeyer, Damian Maseda, John K. Everett, Fang Wei, Hong Kong, Qian Zhang, Hong Y. Wang, John W. Tobias, David M. Walter, Kelly M. Zullo, Sarah Javaid, Amanda Watkins, Mariusz A. Wasik, Frederic D. Bushman, James L. Riley

Research output: Contribution to journalArticlepeer-review

13 Scopus citations

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 languageEnglish
Pages (from-to)3241-3254
Number of pages14
JournalCancer Research
Volume81
Issue number12
DOIs
StatePublished - 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

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