Quantitation of progesterone receptor mRNA in breast carcinoma by branched DNA assay.

Abstract:

:Expression of progesterone receptor (PR) mRNA is indicative of a normal gene regulation mechanism mediated by functional estrogen receptor (ER). A simple assay which can reliably detect and quantitate PR mRNA levels in a small amount of tissue will be of value for studying functional status of ER. We have developed a quantitative nucleic acid hybridization assay for PR mRNA in breast carcinoma. The assay, which is based on the branched DNA (bDNA) technology, is simple, highly specific, and reproducible, requires 20 mg of tissue, and correlates reasonably well (r = 0.86) with an established methodology. The assay has a dynamic range of 3 x 10(3)-6 x 10(7) copies of PR mRNA per well. PR message as high as 3.9 x 10(5) copies per well could be detected in normal breast tissues. Thus a sensitivity of 3 x 10(3) PR copies per well was sufficient for testing clinical samples. In the present studies, accurate measurement of tissue weight enabled direct reporting of the PR mRNA values as the end point results. The bDNA assay provides a useful tool for the detection and quantitation of PR mRNA in research and routine clinical laboratories.

authors

Nargessi RD,Shimizu RM,Xu XM,Connolly J,Zamroud M,Collins ML,Kolberg J

doi

10.1023/a:1006081127924

subject

Has Abstract

pub_date

1998-07-01 00:00:00

pages

57-62

issue

1

eissn

0167-6806

issn

1573-7217

journal_volume

50

pub_type

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