Deciphering the Transcription Factor Landscape in Prostate Cancer Progression: A Novel Approach to Understand NE...

Area of Science:

• Oncology
• Molecular Biology
• Genetics

Background:

• Prostate cancer (PCa) is a major cause of male cancer mortality.
• Treatment-induced neuroendocrine prostate cancer (NEPC) is an aggressive, ARPI-resistant subtype.
• The role of transcription factors (TFs) in PCa progression and NEPC transdifferentiation is not well understood.

Purpose of the Study:

• To identify lineage-specific TF profiles in prostatic adenocarcinoma and NEPC.
• To understand TF expression dynamics during PCa progression and NEPC transdifferentiation.
• To provide a molecular basis for adenocarcinoma to NEPC progression.

Main Methods:

• Developed an internal Z score-based approach to identify TF profiles.
• Utilized Gene Ontology to validate biological and functional roles of TFs.
• Performed knockdown experiments and longitudinal studies on NE transdifferentiation.

Main Results:

• Identified distinct TF profiles for adenocarcinoma and NEPC, including 126 shared, 46 adenocarcinoma-specific, and 56 NEPC-specific TFs.
• Validated TF profiles across multiple cohorts.
• Demonstrated that lineage-TFs are crucial for maintaining lineage-specific cell proliferation.
• Proposed a three-phases hypothesis for PCa progression mechanisms based on dynamic TF expression shifts.

Conclusions:

• The study presents a novel approach to decipher the TF landscape in PCa.
• Identified key TFs involved in PCa progression and NEPC transdifferentiation.
• Findings provide a molecular basis for adenocarcinoma to NEPC progression and suggest potential therapeutic targets.