Mobilized peripheral blood has become the preferred source of stem cells for both autologous and allogeneic transplantation, and granulocyte colony-stimulating factor is the most widely used cytokine for mobilization. However, the mechanisms of cytokine-induced peripheral blood stem cell mobilization are not completely understood. Several recent studies suggest a model in which proteases released into the bone-marrow microenvironment during cytokine treatment play a critical role in mobilization. However, the finding that progenitor mobilization is normal in certain protease-deficient mice suggests that this model may be too simplistic. Here we review recent studies that advance our understanding of the biology of stem cell mobilization. We then discuss cytokines in current use and in development for mobilization of autologous and allogeneic peripheral blood stem cells.

Original languageEnglish
Pages (from-to)406-412
Number of pages7
JournalCurrent hematology reports
Issue number6
StatePublished - Nov 2004


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