Cancer genes disfavoring T cell immunity identified via integrated systems approach

Cell Rep. 2022 Aug 2;40(5):111153. doi: 10.1016/j.celrep.2022.111153.

Abstract

Adoptive T cell therapies (ACT) have been curative for a limited number of cancer patients. The sensitization of cancer cells to T cell killing may expand the benefit of these therapies for more patients. To this end, we use a three-step approach to identify cancer genes that disfavor T cell immunity. First, we profile gene transcripts upregulated by cancer under selection pressure from T cell killing. Second, we identify potential tumor gene targets and pathways that disfavor T cell killing using signaling pathway activation libraries and genome-wide loss-of-function CRISPR-Cas9 screens. Finally, we implement pharmacological perturbation screens to validate these targets and identify BIRC2, ITGAV, DNPEP, BCL2, and ERRα as potential ACT-drug combination candidates. Here, we establish that BIRC2 limits antigen presentation and T cell recognition of tumor cells by suppressing IRF1 activity and provide evidence that BIRC2 inhibition in combination with ACT is an effective strategy to increase efficacy.

Keywords: CP: Cancer; CP: Immunology; CRISPR screen; cell therapy; combination immunotherapy; gain-of-function screen; immunotherapy resistance.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, N.I.H., Intramural
  • Research Support, N.I.H., Extramural

MeSH terms

  • Antigen Presentation
  • CRISPR-Cas Systems / genetics
  • Humans
  • Neoplasms* / genetics
  • Oncogenes
  • Systems Analysis
  • T-Lymphocytes*