Lipid raft-dependent endocytosis: a new route for hepcidin-mediated regulation of ferroportin in macrophages

摘要

BackgroundExpression of the iron exporter ferroportin at the plasma membrane of macrophages is enhanced by iron loading and is decreased by hepcidin. We previously showed that ferroportin is present in specific cell surface domains suggestive of lipid rafts. Herein, we have clarified the localization of ferroportin in macrophage membranes and tested whether raft-mediated endocytosis plays a role in hepcidin activity.