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Abstract
Our earlier work implicates transcription factors GATA-4 and GATA-6 in the murine adrenal. We have now studied their expression during mouse and human adrenal development in detail. GATA-4 and GATA-6 mRNAs are readily detectable from embryonic day 15 in mouse and gestational week 19 in human adrenal cortex. In postnatal adrenal, GATA-4 expression is down-regulated, whereas GATA-6 mRNA and protein continue to be abundantly present. In a human adrenocortical cell line NCI-H295R, GATA-6 mRNA is up-regulated by cAMP. This cell line does not express GATA-4. Our findings suggest that GATA-6 expression is hormonally controlled, and required throughout adrenal development from fetal to adult age. GATA-4, on the other hand, may serve a role in fetal adrenal gene regulation.
ACKNOWLEDGMENTS
This work was supported by the Finnish Pediatric Research Foundation, the University of Helsinki, the University Central Hospital in Helsinki, the Academy of Finland, the Juselius Foundation, and Kuopio University Hospital.