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A real-time immuno-PCR assay for routine ultrasensitive quantification of proteins.

Abstract：

:A fast and robust assay, based on the combination of the highly sensitive immuno-PCR (IPCR), employing standardized self-assembled DNA-protein conjugates as reagents, and the well-established, reliable, and fast real-time PCR detection by means of the TaqMan principle is introduced in this work. The use of anti-species immunoglobulin reagents allows one for easy adaptation of this assay to basically any existing ELISA application. The use of an internal competitor in the real-time IPCR (rtIPCR) further increases the sensitivity and significance of this assay; 0.1-0.01 amol (500-50 fg/mL) IgG from several species (mouse, rabbit, goat, and human) were detectable using direct, indirect, and sandwich model rtIPCR assays, thereby increasing the detection limit of the analogous ELISA tests about 100- to 1000-fold. The robustness of this method was demonstrated in two typical applications by detecting 40 pg/mL of the novel anti-cancer drug rViscumin in human plasma samples as well as 100 pg/mL of a research antibody in cell culture media. In both cases, a comparable ELISA was 1000-fold less sensitive.

journal_name

Biochem Biophys Res Commun

journal_title

Biochemical and biophysical research communications

authors

Adler M,Wacker R,Niemeyer CM

doi

10.1016/s0006-291x(03)01364-0

subject

Has Abstract

pub_date

2003-08-22 00:00:00

pages

240-50

issue

2

eissn

0006-291X

issn

1090-2104

pii

S0006291X03013640

journal_volume

308

pub_type

杂志文章

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