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- W1689082532 abstract "The murine macrophage-like cell line P388D1 has been used as a model to investigate whether iron acquired simultaneously from different sources (transferrin, lactoferrin, and ovotransferrin-anti-ovotransferrin immune complexes) is handled in the same way. P388D1 cells bound both lactoferrin and transferrin, but over a 6 h incubation period only the latter actually donated iron to the cells. When the cells were incubated with [55Fe]transferrin and [59Fe]ovotransferrin-anti-ovotransferrin immune complexes iron was acquired from both sources. However, there was a difference in the intracellular distribution of the two isotopes, proportionally more 55Fe entering haem compounds and less entering ferritin. When the cells were precultured in a low-iron serum-free medium almost no transferrin-iron was incorporated into ferritin, whereas the proportion of immune complex-derived iron incorporated into ferritin was unchanged. Lactoferrin enhanced the rate of cellular proliferation, as measured by [3H]thymidine incorporation, despite its inability to donate iron to the cells, suggesting a stimulatory effect independent of iron donation. In contrast immune complexes inhibited cell proliferation. These findings indicate that iron acquired from transferrin and iron acquired by scavenging mechanisms are handled differently, and suggest that more than one intracellular iron transit pool may exist." @default.
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- W1689082532 date "1988-05-15" @default.
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- W1689082532 title "Uptake and handling of iron from transferrin, lactoferrin and immune complexes by a macrophage cell line" @default.
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- W1689082532 doi "https://doi.org/10.1042/bj2520221" @default.
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