Genomic DNA functions as a universal external standard in quantitative real-time PCR

James J. Yun, Lawrence E. Heisler, Irene I L Hwang, Olivia Wilkins, Suzanne K. Lau, Martin Hyrcza, Bamini Jayabalasingham, Jing Jin, Jo Anne McLaurin, Ming Sound Tsao, Sandy D. Der*

*Corresponding author for this work

Research output: Contribution to journalArticle

112 Citations (Scopus)

Abstract

Real-time quantitative PCR (qPCR) is a powerful tool for quantifying specific DNA target sequences. Although determination of relative quantity is widely accepted as a reliable means of measuring differences between samples, there are advantages to being able to determine the absolute copy numbers of a given target. One approach to absolute quantification relies on construction of an accurate standard curve using appropriate external standards of known concentration. We have validated the use of tissue genomic DNA as a universal external standard to facilitate quantification of any target sequence contained in the genome of a given species, addressing several key technical issues regarding its use. This approach was applied to validate mRNA expression of gene candidates identified from microarray data and to determine gene copies in transgenic mice. A simple method that can assist achieving absolute quantification of gene expression would broadly enhance the uses of real-time qPCR and in particular, augment the evaluation of global gene expression studies.

Original languageEnglish (US)
JournalNucleic Acids Research
Volume34
Issue number12
DOIs
StatePublished - Dec 1 2006

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Real-Time Polymerase Chain Reaction
Gene Expression
DNA
Transgenic Mice
Genome
Messenger RNA
Genes

ASJC Scopus subject areas

  • Genetics

Cite this

Yun, J. J., Heisler, L. E., Hwang, I. I. L., Wilkins, O., Lau, S. K., Hyrcza, M., ... Der, S. D. (2006). Genomic DNA functions as a universal external standard in quantitative real-time PCR. Nucleic Acids Research, 34(12). https://doi.org/10.1093/nar/gkl400
Yun, James J. ; Heisler, Lawrence E. ; Hwang, Irene I L ; Wilkins, Olivia ; Lau, Suzanne K. ; Hyrcza, Martin ; Jayabalasingham, Bamini ; Jin, Jing ; McLaurin, Jo Anne ; Tsao, Ming Sound ; Der, Sandy D. / Genomic DNA functions as a universal external standard in quantitative real-time PCR. In: Nucleic Acids Research. 2006 ; Vol. 34, No. 12.
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Yun, JJ, Heisler, LE, Hwang, IIL, Wilkins, O, Lau, SK, Hyrcza, M, Jayabalasingham, B, Jin, J, McLaurin, JA, Tsao, MS & Der, SD 2006, 'Genomic DNA functions as a universal external standard in quantitative real-time PCR', Nucleic Acids Research, vol. 34, no. 12. https://doi.org/10.1093/nar/gkl400

Genomic DNA functions as a universal external standard in quantitative real-time PCR. / Yun, James J.; Heisler, Lawrence E.; Hwang, Irene I L; Wilkins, Olivia; Lau, Suzanne K.; Hyrcza, Martin; Jayabalasingham, Bamini; Jin, Jing; McLaurin, Jo Anne; Tsao, Ming Sound; Der, Sandy D.

In: Nucleic Acids Research, Vol. 34, No. 12, 01.12.2006.

Research output: Contribution to journalArticle

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AU - Hyrcza, Martin

AU - Jayabalasingham, Bamini

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AU - Tsao, Ming Sound

AU - Der, Sandy D.

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