Development of a quantitative fluorescence-based ligand-binding assay.

Abstract:

:A major goal of biology is to develop a quantitative ligand-binding assay that does not involve the use of radioactivity. Existing fluorescence-based assays have a serious drawback due to fluorescence quenching that accompanies the binding of fluorescently-labeled ligands to their receptors. This limitation of existing fluorescence-based assays prevents the number of cellular receptors under investigation from being accurately measured. We have developed a method where FITC-labeled proteins bound to a cell surface are proteolyzed extensively to eliminate fluorescence quenching and then the fluorescence of the resulting sample is compared to that of a known concentration of the proteolyzed FITC-protein employed. This step enables the number of cellular receptors to be measured quantitatively. We expect that this method will provide researchers with a viable alternative to the use of radioactivity in ligand binding assays.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Breen CJ,Raverdeau M,Voorheis HP

doi

10.1038/srep25769

subject

Has Abstract

pub_date

2016-05-10 00:00:00

pages

25769

issn

2045-2322

pii

srep25769

journal_volume

6

pub_type

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