A heterogeneous pharmaco-transcriptomic landscape induced by targeting a single oncogenic kinase
Giglio, R. M.; Hou, N.; Wyatt, A.; Hong, J.; Shi, L.; Vaikunthan, M.; Fuchs, H.; Nima, J. P.; Malinowski, S. W.; Ligon, K. L.; McFaline-Figueroa, J. R.; Yosef, N.; Azizi, E.; McFaline-Figueroa, J. L.
Show abstract
Over-activation of the epidermal growth factor receptor (EGFR) is a hallmark of glioblastoma. However, EGFR-targeted therapies have led to minimal clinical response. While delivery of EGFR inhibitors (EGFRis) to the brain constitutes a major challenge, how additional drug-specific features alter efficacy remains poorly understood. We apply highly multiplex single-cell chemical genomics to define the molecular response of glioblastoma to EGFRis. Using a deep generative framework, we identify shared and drug-specific transcriptional programs that group EGFRis into distinct molecular classes. We identify programs that differ by the chemical properties of EGFRis, including induction of adaptive transcription and modulation of immunogenic gene expression. Finally, we demonstrate that pro-immunogenic expression changes associated with a subset of tyrphostin family EGFRis increase the ability of cytotoxic T-cells to eradicate tumor cells. Our study provides a framework that considers each agents unique and often unknown poly-pharmacology to prioritize compounds that induce clinically favorable molecular responses.
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