Androgen Receptor Splice Variant-7 Expression Analysis in Circulating Tumor Cells: Methodology and Application of...

Area of Science:

• Oncology
• Molecular Biology
• Biotechnology

Background:

• Androgen receptor splice variant-7 (AR-V7) is a critical biomarker for treatment resistance in castration-resistant prostate cancer (CRPC).
• Accurate detection of AR-V7 in circulating tumor cells (CTCs) is essential for guiding therapy decisions.
• Current methodologies require robust and standardized protocols for reliable AR-V7 analysis.

Purpose of the Study:

• To present a detailed methodology for analyzing AR-V7 expression in CTCs.
• To establish a reliable platform for detecting AR-V7 using the AdnaTest Prostate CancerSelect and Prostate CancerDetect system.
• To facilitate research into the role of AR-V7 in CRPC therapy resistance.

Main Methods:

• Immunomagnetic enrichment of CTCs from patient samples.
• Isolation of messenger RNA (mRNA) from enriched CTCs.
• Reverse transcription polymerase chain reaction (RT-PCR) for AR-V7 gene expression analysis.

Main Results:

• The described protocol provides a robust method for AR-V7 detection in CTCs.
• The AdnaTest system enables efficient sample preparation and gene expression analysis.
• This methodology allows for the investigation of CTC molecular characteristics.

Conclusions:

• The outlined methodology offers a standardized approach for AR-V7 analysis in CTCs.
• This technique supports the clinical utility of AR-V7 as a predictive biomarker in CRPC.
• Further research utilizing this platform can elucidate CTC roles in therapeutic resistance.