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Tumors induce de novo steroid biosynthesis in T cells to evade immunity
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Tumors induce de novo steroid biosynthesis in T cells to evade immunity
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Journal Article
Tumors induce de novo steroid biosynthesis in T cells to evade immunity
2020
Overview
Tumors subvert immune cell function to evade immune responses, yet the complex mechanisms driving immune evasion remain poorly understood. Here we show that tumors induce de novo steroidogenesis in T lymphocytes to evade anti-tumor immunity. Using a transgenic steroidogenesis-reporter mouse line we identify and characterize de novo steroidogenic immune cells, defining the global gene expression identity of these steroid-producing immune cells and gene regulatory networks by using single-cell transcriptomics. Genetic ablation of T cell steroidogenesis restricts primary tumor growth and metastatic dissemination in mouse models. Steroidogenic T cells dysregulate anti-tumor immunity, and inhibition of the steroidogenesis pathway is sufficient to restore anti-tumor immunity. This study demonstrates T cell de novo steroidogenesis as a mechanism of anti-tumor immunosuppression and a potential druggable target.
Multiple mechanisms of immune evasion exploited by cancer cells have been described. Here, the authors show that genetic inactivation or pharmacological inhibition of tumor-induced Th2-mediated de novo steroidogenesis are sufficient to restore an efficient anti-tumor immune response and restrict tumor growth.
Publisher
Nature Publishing Group UK,Nature Publishing Group,Nature Portfolio
Subject
/ 13/106
/ 13/21
/ 13/31
/ 38
/ 38/77
/ 38/91
/ 64/60
/ Ablation
/ Animals
/ CD4-Positive T-Lymphocytes - immunology
/ CD4-Positive T-Lymphocytes - metabolism
/ Cholesterol Side-Chain Cleavage Enzyme - genetics
/ Cholesterol Side-Chain Cleavage Enzyme - immunology
/ Humanities and Social Sciences
/ Humans
/ Immunity
/ Kinases
/ Mice
/ Science
/ Steroids
/ Tumors
