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Semiautomated clone verification by real-time PCR using molecular beacons.
R C van Schie1, S A Marras, J M Conroy
1Roswell Park Cancer Institute, Buffalo, NY, USA. vanschie@roswellpark.org
Biotechniques
|December 29, 2000
Summary
This study introduces multicolor molecular beacons for a high-throughput, real-time PCR assay. This novel method rapidly and accurately detects sequence tagged sites (STSs) with common repeat elements, improving efficiency.
Area of Science:
- Molecular Biology
- Genomics
- Biotechnology
Background:
- Conventional PCR analysis for common elements requires multiple optimization rounds and gel electrophoresis.
- This process is time-consuming and prone to contamination, hindering high-throughput screening.
Purpose of the Study:
- To develop a novel, high-throughput, real-time PCR assay using multicolor molecular beacons.
- To rapidly and accurately detect sequence tagged sites (STSs) containing common repeat elements like CA and GATA.
Main Methods:
- Developed a one-tube, real-time PCR assay utilizing molecular beacons labeled with multicolor fluorophores.
- Applied the assay to detect CA and GATA repeats in 260 bacterial artificial chromosome (BAC) clones.
Main Results:
- The molecular beacon PCR assay confirmed marker content in 96 samples within 3 hours, eliminating gel electrophoresis.
- Identified 129 clones with CA and/or GATA repeats, outperforming conventional PCR (121 clones).
Conclusions:
- Molecular beacon PCR offers a fast, accurate, and sensitive multiplex detection assay for tandem repeat elements.
- This method significantly expedites the verification of marker content in numerous templates containing repeats.