Copy number-based quantification assay for non-invasive detection of PVT1-derived transcripts

Area of Science:

• Genetics and Genomics
• Molecular Biology
• Cancer Research

Background:

• The 8q24 chromosomal region is a key cancer susceptibility locus.
• Plasmacytoma variant translocation 1 (PVT1), a non-protein coding gene at 8q24, is implicated in prostate cancer.
• PVT1 produces multiple transcripts with potentially diverse functions.

Purpose of the Study:

• To develop a real-time quantitative polymerase chain reaction (qPCR)-based assay.
• To enable accurate, reproducible, and quantifiable copy number-based detection of PVT1 exons 4A, 4B, and 9.

Main Methods:

• Cloning of PVT1 exons 4A, 4B, and 9 into a plasmid vector to generate standards.
• Utilizing SYBR-Green signal detection for PCR-based quantification.
• Assay validation in prostate cell lines, human prostate tissues, serum, plasma, and urine.

Main Results:

• The assay successfully quantifies both low and high copy numbers of PVT1 transcripts.
• This represents the first reported copy number-based quantification assay for PVT1 transcripts.
• Demonstrated detection of PVT1 transcripts in various biological samples.

Conclusions:

• The developed qPCR assay is effective for quantifying PVT1-derived transcripts.
• This assay offers a novel approach for non-invasive detection of PVT1.
• The assay shows potential for routine use in diagnosing diseases associated with PVT1 dysregulation.