A Rapid Direct Telomerase Assay Method Using 96-Well Streptavidin Plates | Zendy

Rawle Francis | Zendy; Simon H. Friedman | Zendy

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A Rapid Direct Telomerase Assay Method Using 96-Well Streptavidin Plates

Author(s) -

Rawle Francis,

Simon H. Friedman

Publication year - 2002

Publication title -

biotechniques

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.617

H-Index - 131

eISSN - 1940-9818

pISSN - 0736-6205

DOI - 10.2144/02325dd05

Subject(s) - telomerase , streptavidin , biotinylation , chemistry , chromatography , primer extension , microbiology and biotechnology , primer (cosmetics) , biology , biotin , biochemistry , dna , base sequence , organic chemistry , gene

We have developed a high-throughput direct assay methodfor the assay of telomerase activity that improves on previous direct telomerase assays in two ways that allow larger numbers of samples to be conveniently processed: (i) 96-well streptavidin coated plates are used to bind and wash biotinylated primer extension products from the telomerase assay, as opposed to tubes containing streptavidin-coated magnetic beads; and (ii) storage phosphor-imagery is used instead of film autoradiography to detect telomerase products after being washed and released from the streptavidin-derivatized matrix. This method improves on previous direct assay methods using magnetic beads by allowing larger numbers of samples to be conveniently assayed. Also, the total activity of the radiolabeled nucleotides used in this procedure is significantly lower than that used in standard direct telomerase assays, lowering costs and exposure to radioactivity. We have validated the assay by repeating, in triplicate, the IC50 determination of rivanol, our previously identified telomerase inhibitor.

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