Title : Regulation by human chorionic gonadotropin of sodium/iodide symporter gene expression in the JAr human choriocarcinoma cell line.

Pub. Date : 2002 Jun

PMID : 12021185






3 Functional Relationships(s)
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1 Iodide accumulation increased after 2-h exposure to 5 IU/ml hCG, to 6-fold over the basal level after 8 h. This effect was reproduced using forskolin, the cAMP analog (Bu)(2)-cAMP, and phorbol acetate. Iodides chorionic gonadotropin subunit beta 5 Homo sapiens
2 Functional analysis clearly showed that Jar cells are able to concentrate iodide in presence of hCG. Iodides chorionic gonadotropin subunit beta 5 Homo sapiens
3 In conclusion, our data demonstrate that 1) NIS is expressed in JAr cells; 2) iodide transport in JAr cells is regulated by hCG and by cAMP-dependent and -independent mechanisms; 3) the stimulation of iodide uptake is due to an increase in both NIS mRNA and protein levels; and 4) JAr cells may represent an excellent in vitro model suitable to analyze the molecular mechanisms involved in iodide transport from mother to fetus. Iodides chorionic gonadotropin subunit beta 5 Homo sapiens