Mass spectrometric immunoassay of intact insulin and related variants for population proteomics studies.

ABSTRACT:

Purpose

The purpose of the work presented herein was to develop a high-throughput assay for the quantification of human insulin in plasma samples while simultaneously detecting, with high mass accuracy, any additional variant forms of insulin that might be present in each sample.

Experimental design

A mass spectrometric immunoassay (MSIA) was designed in which anti-human insulin antibodies were immobilized to commercially available mass spectrometric immunoassay pipette tips and used to capture insulin and related protein variants from human plasma.

Results

Standard curves for insulin exhibited linearity (average R(2) for three days of analysis=0.99) and assay concentration limits of detection and limits of quantification for insulin were found to be 1 and 15 pM, resp

SUBMITTER: Oran PE 

PROVIDER: S-EPMC3708802 | biostudies-literature | 2011 Aug

REPOSITORIES: biostudies-literature