Quantification of Estrogen Receptor Messenger RNA by Quantitative Polymerase Chain Reaction Using Internal Standard Fragment

Autor: Sumitaka Miyamoto, Hideki Mizunuma, Tsutomu Uchida, Yoshito Ibuki, Issay Kagami
Rok vydání: 1996
Předmět:
Zdroj: Biochemical and Biophysical Research Communications. 228:358-364
ISSN: 0006-291X
DOI: 10.1006/bbrc.1996.1666
Popis: A simple and reliable polymerase chain reaction-based method for quantifying human and rat estrogen receptor (ER)-mRNA is described. This method involves co-amplification of cDNA transcribed from sample RNA with an internal standard to reduce tube to tube amplification variations. Human and rat internal standards were synthesized by insertion of a DNA fragment near the midportion of human and rat target ER cDNA molecules. After co-amplification, both products of target ER cDNA and internal standard were separated on agarose gel by electrophoresis and transferred onto a membrane filter. The radioactivity hybridized with32P-labeled ER cDNA was counted. The ER mRNA content was calculated by linear regression analysis after obtaining a logarithm of ratios between the sample and the internal standard radioactivity. The coefficient of variation of this assay was 18.8%. An absolute amount of ER mRNA in less than 104cultured cells could be measured.
Databáze: OpenAIRE