TSH action on iodination in FRTL-5 cells.


This study shows that the Fisher rat thyroid cell line (FRTL-5) can iodinate thyroglobulin (Tg) in an selective way. The Tg-iodination is TSH dependent and shows a optimum at 10-100 microU TSH/ml. Intracellularly, Tg and various other non Tg-related proteins are iodinated in a TSH dependent fashion. Tg added to the medium is specifically iodinated, this… (More)