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Updated: Feb 21, 2026

Development and Testing of Species-specific Quantitative PCR Assays for Environmental DNA Applications
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qPrimerDB: a thermodynamics-based gene-specific qPCR primer database for 147 organisms.

Kun Lu1,2, Tian Li3, Jian He4,5

  • 1College of Agronomy and Biotechnology, Southwest University, Beibei, Chongqing 400715, China.

Nucleic Acids Research
|October 5, 2017
PubMed
Summary

qPrimerDB is a comprehensive database for designing and validating gene-specific primers for quantitative polymerase chain reaction (qPCR). It offers millions of primer pairs across 147 organisms, improving gene expression analysis accuracy and efficiency.

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Area of Science:

  • Molecular Biology
  • Bioinformatics
  • Genomics

Background:

  • Quantitative polymerase chain reaction (qPCR) is crucial for gene expression analysis.
  • High-quality primers are essential for successful qPCR experiments.
  • Existing qPCR primer databases lack comprehensive coverage across diverse organisms.

Purpose of the Study:

  • To develop qPrimerDB, a comprehensive database for gene-specific qPCR primer design and validation.
  • To provide a user-friendly web interface for accessing pre-computed primer pairs.
  • To support gene expression analysis across a wide range of organisms.

Main Methods:

  • An automated workflow for gene-specific qPCR primer design.
  • Thermodynamics-based validation of primer pair quality.
  • Inclusion of 147 organisms, with millions of primer pairs available.
  • Experimental validation of primer specificity and efficiency using qPCR assays and gel electrophoresis.

Main Results:

  • qPrimerDB contains over 3.3 million optimal primer pairs and 47.7 million alternative primer pairs.
  • The database covers 147 organisms, including human, mouse, zebrafish, yeast, and plants.
  • Experimental validation confirmed the specificity and efficiency of selected primers.
  • A web front-end facilitates easy access and batch downloading of primer data.

Conclusions:

  • qPrimerDB is a valuable, time-saving resource for researchers conducting gene expression analysis.
  • The database significantly expands the availability of high-quality qPCR primers.
  • It is a routinely updated, publicly accessible resource for the scientific community.