Translation dysregulation in cancer as a source for targetable antigens

*Corresponding author for this work

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Abstract

Aberrant peptides presented by major histocompatibility complex (MHC) molecules are targets for tumor eradication, as these peptides can be recognized as foreign by T cells. Protein synthesis in malignant cells is dysregulated, which may result in the generation and presentation of aberrant peptides that can be exploited for T cell-based therapies. To investigate the role of translational dysregulation in immunological tumor control, we disrupt translation fidelity by deleting tRNA wybutosine (yW)-synthesizing protein 2 (TYW2) in tumor cells and characterize the downstream impact on translation fidelity and immunogenicity using immunopeptidomics, genomics, and functional assays. These analyses reveal that TYW2 knockout (KO) cells generate immunogenic out-of-frame peptides. Furthermore, Tyw2 loss increases tumor immunogenicity and leads to anti-programmed cell death 1 (PD-1) checkpoint blockade sensitivity in vivo. Importantly, reduced TYW2 expression is associated with increased response to checkpoint blockade in patients. Together, we demonstrate that defects in translation fidelity drive tumor immunogenicity and may be leveraged for cancer immunotherapy.

Original languageEnglish
Pages (from-to)823-840.e18
JournalCancer Cell
Volume43
Issue number5
Early online date27 Mar 2025
DOIs
Publication statusPublished - 12 May 2025

Funding

Y. Samuels is supported by the Israel Science Foundation grant no. 2133/23, the European Research Council (ERC) under the European Union's Horizon 2020 research and innovation programme (#770854), the European Union (#101094980), MRA (#917324), the Minerva Stiftung with the funds from the BMBF of the Federal Republic of Germany, the ICRF (20-802-ICG), and the Intramural Research Program of the NIH, NCI. Y. Samuels is the incumbent of the Knell Family Professorial Chair and is the Head of the Moross Integrated Cancer Center (MICC), de-Picciotto-Lesser Cell Observatory unit at MICC. S.G. is supported by the Sheba-Talpiot Medical Program. D.M. is supported by the Israeli Ministry of Aliyah and Integration. C.S.M. is a Cancer Research Institute Irvington Fellow (CRI Award #4134) and a Parker Institute for Cancer Immunotherapy Scholar. A.T.S. is supported by a Career Award for Medical Scientists from the Burroughs Wellcome Fund, a Lloyd J. Old STAR Award from the Cancer Research Institute, a Pew-Stewart Scholars for Cancer Research Award, and the Parker Institute for Cancer Immunotherapy. J.O. is supported by the Research Council of Norway through its Centers of Excellence scheme, #332727, and through grant #316060, and by the Norwegian Cancer Society grant #216135-2020, South-Eastern Regional Health Authority Norway #2021074, ERC under the European Union's Horizon 2020 research and innovation programme (#865805), and Novo Nordisk Foundation. A.R.B. was supported by NIH grant GM136960. T.S. was supported by the Exploratory Research for Advanced Technology (ERATO, JPMJER2002) program from JST.

All Science Journal Classification (ASJC) codes

  • Oncology
  • Cancer Research

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