Assay Drug Dev Technol. 2007 Aug;5(4):535-40.

A 96-well automated radioiodide uptake assay for sodium/iodide symporter inhibitors.

Lecat-Guillet N, Merer G, Lopez R, Pourcher T, Rousseau B, Ambroise Y.

Source

iBiTecS, Service de Chimie Bioorganique et de Marquage, CEA, Gif sur Yvette, France.

Abstract

A high-throughput screening method based on radioiodide uptake in human embryonic kidney 293 cells expressing the human sodium/iodide symporter was developed. Central to assay development was a homogeneous cell culture in the 96-well microplate coupled with the use of scintillation proximity technology. The assay is fast and highly reproducible with a Z' greater than 0.8. The automated procedure allows the screening of 4,000 compounds per day. Using this methodology, several known substrates of the sodium/iodide symporter were evaluated in a single day. Inhibition of iodide uptake was shown to follow the series PF(6)(-) > ClO(4)(-) > BF(4)(-) > SCN(-) >> NO(3)(-) > IO(4)(-) > N(3)(-) >> Br(-), in accord with the literature. This method represents an initial approach to the search for inhibitors of iodide transport mediated by the sodium/iodide symporter.

PMID:: 17767421; [PubMed - indexed for MEDLINE]

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