Mapping kinase-dependent tumor immune adaptation with multiplexed single-cell CRISPR screens

Lingting Shi1,2, Ross M Giglio3, Qingyuan Cai4

  • 1Irving Institute for Cancer Dynamics, Columbia University, New York, NY, 10027, USA.

Insights

This study maps glioblastoma's (GBM) tumor-intrinsic immune evasion strategies using CRISPR screening. It identifies kinase targets like EPHA2 and PDGFRA that, when inhibited, enhance T cell-mediated killing of GBM tumors.

Area of Science:

  • Cancer immunology
  • Genomics
  • Single-cell analysis

Background:

  • Tumor cells employ intrinsic programs to evade immune attack.
  • Direct tumor-immune interactions can model these evasion mechanisms in vitro.

Purpose of the Study:

  • To map tumor-intrinsic regulation of T cell-driven immune pressure in glioblastoma (GBM).
  • To identify genetic perturbations that alter tumor state and adaptive responses to T cell engagement.

Main Methods:

  • High-throughput single-cell CRISPR screening (CRISPR interference and activation) focused on the protein kinome.
  • Allogeneic GBM-T cell co-culture with immune-matched antigen specificity.
  • Massively multiplexed single-cell transcriptomics and deep generative models for data analysis.

Main Results:

  • Resolved distinct modules of immune evasion, including antigen presentation, interferon/NF-κB signaling, oxidative stress resilience, and cytokine programs.
  • Identified genetic perturbations that alter tumor transcriptional trajectories under T cell pressure.
  • Discovered kinase targets (EPHA2, PDGFRA) involved in GBM immune evasion phenotypes.

Conclusions:

  • The developed CRISPR screening framework provides a scalable blueprint for dissecting tumor-immune interactions.
  • Inhibition of identified kinase targets enhances T cell-mediated killing of glioblastoma.
  • This research elucidates genetic control mechanisms underlying tumor immune evasion.

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