Mechanism-centric regulatory network identifies NME2 and MYC programs as markers of Enzalutamide resistance in CRPC
Sukanya Panja1, Mihai Ioan Truica2, Christina Y Yu1
1Department of Health Informatics, Rutgers School of Health Professions, Newark, NJ, 07107, USA.
Abstract:
Heterogeneous response to Enzalutamide, a second-generation androgen receptor signaling inhibitor, is a central problem in castration-resistant prostate cancer (CRPC) management. Genome-wide systems investigation of mechanisms that govern Enzalutamide resistance promise to elucidate markers of heterogeneous treatment response and salvage therapies for CRPC patients. Focusing on the de novo role of MYC as a marker of Enzalutamide resistance, here we reconstruct a CRPC-specific mechanism-centric regulatory network, connecting molecular pathways with their upstream transcriptional regulatory programs. Mining this network with signatures of Enzalutamide response identifies NME2 as an upstream regulatory partner of MYC in CRPC and demonstrates that NME2-MYC increased activities can predict patients at risk of resistance to Enzalutamide, independent of co-variates. Furthermore, our experimental investigations demonstrate that targeting MYC and its partner NME2 is beneficial in Enzalutamide-resistant conditions and could provide an effective strategy for patients at risk of Enzalutamide resistance and/or for patients who failed Enzalutamide treatment.
Insights
Enzalutamide resistance in prostate cancer is common. This study identifies NME2-MYC activity as a predictor of resistance and a therapeutic target for improved treatment outcomes.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Enzalutamide is a key treatment for castration-resistant prostate cancer (CRPC).
- Patient response to Enzalutamide is highly variable, necessitating research into resistance mechanisms.
- Identifying biomarkers and therapeutic targets is crucial for managing CRPC effectively.
Purpose of the Study:
- To investigate the role of MYC in Enzalutamide resistance in CRPC.
- To construct a CRPC-specific regulatory network to identify key molecular players.
- To discover novel therapeutic strategies for Enzalutamide-resistant prostate cancer.
Main Methods:
- Genome-wide systems investigation to build a mechanism-centric regulatory network.
- Network mining using Enzalutamide response signatures.
- Experimental validation of identified targets in Enzalutamide-resistant models.
Main Results:
- MYC was identified as a de novo marker of Enzalutamide resistance.
- NME2 was identified as an upstream regulatory partner of MYC in CRPC.
- Increased NME2-MYC activity predicts Enzalutamide resistance independently of other factors.
- Targeting MYC and NME2 demonstrated therapeutic benefits in Enzalutamide-resistant conditions.
Conclusions:
- NME2-MYC activity serves as a predictive biomarker for Enzalutamide resistance in CRPC patients.
- Targeting the NME2-MYC axis offers a promising therapeutic strategy for Enzalutamide-resistant prostate cancer.
- This research provides a foundation for developing salvage therapies for patients with advanced prostate cancer.
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