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Evaluating the Differentiation Capacity of Mouse Prostate Epithelial Cells Using Organoid Culture
Published on: November 22, 2019
FOXA2 drives lineage plasticity and KIT pathway activation in neuroendocrine prostate cancer
Ming Han1, Fei Li1, Yehan Zhang1
1State Key Laboratory of Cell Biology, Shanghai Key Laboratory of Molecular Andrology, Shanghai Institute of Biochemistry and Cell Biology, Center for Excellence in Molecular Cell Science, Chinese Academy of Sciences, Shanghai 200031, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Abstract:
Prostate cancer adeno-to-neuroendocrine lineage transition has emerged as a mechanism of targeted therapeutic resistance. Identifying the direct molecular drivers and developing pharmacological strategies using clinical-grade inhibitors to overcome lineage transition-induced therapeutic resistance are imperative. Here, using single-cell multiomics analyses, we investigate the dynamics of cellular heterogeneity, transcriptome regulation, and microenvironmental factors in 107,201 cells from genetically engineered mouse prostate cancer samples with complete time series of tumor evolution seen in patients. We identify that FOXA2 orchestrates prostate cancer adeno-to-neuroendocrine lineage transition and that Foxa2 expression is significantly induced by androgen deprivation. Moreover, Foxa2 knockdown induces the reversal of adeno-to-neuroendocrine transition. The KIT pathway is directly regulated by FOXA2 and specifically activated in neuroendocrine prostate cancer (NEPC). Pharmacologic inhibition of KIT pathway significantly suppresses mouse and human NEPC tumor growth. These findings reveal that FOXA2 drives adeno-to-neuroendocrine lineage plasticity in prostate cancer and provides a potential pharmacological strategy for castration-resistant NEPC.
Insights
Prostate cancer can switch to neuroendocrine prostate cancer (NEPC) due to therapeutic resistance. Researchers found FOXA2 drives this transition, offering a new therapeutic target for NEPC.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Prostate cancer lineage plasticity, specifically adeno-to-neuroendocrine transition, is a key mechanism of therapeutic resistance.
- Identifying molecular drivers of this transition is crucial for developing effective treatments for castration-resistant neuroendocrine prostate cancer (NEPC).
Purpose of the Study:
- To investigate the cellular and molecular mechanisms driving prostate cancer adeno-to-neuroendocrine lineage transition.
- To identify potential pharmacological strategies to overcome resistance in NEPC.
Main Methods:
- Single-cell multiomics analyses of 107,201 cells from genetically engineered mouse prostate cancer models.
- Time-series analysis of tumor evolution mirroring human disease progression.
- Gene knockdown experiments (Foxa2) and pharmacologic inhibition of the KIT pathway.
Main Results:
- FOXA2 was identified as a key orchestrator of the adeno-to-neuroendocrine transition, with its expression induced by androgen deprivation.
- Foxa2 knockdown reversed the lineage transition.
- The KIT pathway was found to be directly regulated by FOXA2 and activated in NEPC.
- Pharmacologic inhibition of the KIT pathway suppressed NEPC tumor growth in mouse and human models.
Conclusions:
- FOXA2 drives adeno-to-neuroendocrine lineage plasticity in prostate cancer.
- Targeting the FOXA2-KIT pathway presents a promising therapeutic strategy for castration-resistant NEPC.
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