Ferric cacodylate efficiently stimulates growth of rat renal glomerular epithelial cells in vitro.

Cytotechnology
M YamadaT Okigaki

Abstract

Rat renal glomerular epithelial cells (SGE1 cell line) can be maintained and grown continuously in serum-free medium supplemented with insulin, iron-saturated transferrin (Tr), selenium, bovine serum albumin (BSA), linoleic acid, and epidermal growth factor (EGF). Of the growth supplements used, Tr is essential for proliferation of the cells. In the present study, we describe the use of a unique iron-chelate complex, ferric cacodylate (Fe-Cac), positively charged molecules in neutral buffer, that could almost replace Tr in serum-free culture. It even stimulated the growth of SGE1 cells more efficiently than ferric chloride (FeCl(3)) and other iron-chelate complexes, such as ferric nitrilotriacetate (Fe-NTA) and ferric citrate (Fe-Cit). The growth-stimulatory activity of Fe-Cac was exerted at iron concentrations of more than 0.01 μg/ml, whereas a 10-fold excess of iron concentration was required with FeCl(3), Fe-NTA and Fe-Cit. We observed that SGE1 cells grew until confluent, then formed hemicysts (domes) in serum-free medium containing Fe-Cac, suggesting that Fe-Cac did not merely permit cell growth but also supported polarization and organization of the cells into a functional epithelial architecture. Moreover, since the stim...Continue Reading

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Citations

Feb 24, 2018·Journal of the American Society of Nephrology : JASN·Meei-Hua LinJeffrey H Miner

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