125Iodine

The nondestructive introduction of a fluorescent label would provide the molecule with a nonradioactive fluorophore, yet would preserve the option for direct radiolabelling of the fluorescent moiety with 125Iodine. This approach was pioneered by Nagasawa et al. (5) who reacted native or /V-desulfated heparins with a fluorescein isothiocyanate (FITC). The resulting degree of labelling was low... 

One of the first practical applications for these fluorescent labelled heparins was to examine the heparin binding behavior of different proteins and peptides under study in our laboratories. To this end we used a modification of the dot-blot assay described by Hirose and colleagues (13). F-D labelled heparin (-1 fluorescein/heparin) was radiolabelled with 125Iodine using iodobeads, to a specific activity of approximately 0.5 x 106 cpm/pg. Solutions of proteins with known heparin-binding capacities were dotted on nitrocellulose paper. A series of replicates... 

Gomez-Iturriaga PA, Crook J, Borg J, Lockwood G, Fleshner N. Median 5 year follow-up of 125iodine brachytherapy as monotherapy in men agedprostate cancer. Urology 2010 75(6) 1412-6. 

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