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Ancestim is a human stem cell factor used in combination with filgrastim during autologous peripheral blood progenitor cell (PBPC) transplantation to increase PBPC mobilization for improved collection.
Ancestim is a human stem cell factor used in combination with filgrastim during autologous peripheral blood progenitor cell (PBPC) transplantation to increase PBPC mobilization for improved collection.
Ancestim alone is unable to increase peripheral blood progenitor cells so it has to be administered with filgastrim, a granulocyte colony-stimulating factor. Ancestrim will bind to the c-KIT expressed in hemocytoblasts, myeloid progenitors, megakaryocytes, immature mast cells, myeloblasts and lymphoid progenitors. Ancestim binding will cause receptor homodimerization and autophosphorylation at tyrosine residues. The activation of this receptor leads to the activation of a signaling cascade that contains the RAS/ERK, PI3-Kinase, Src kinase and JAK/STAT pathways which will later stimulate proliferation, differentiation and activation of the cell lines.
Ancestim, in combination with filgrastim, is indicated for the setting of autologous peripheral blood progenitor cell transplantation in patients at risk of poor peripheral blood progenitor cell mobilisation. The use of ancestim with filgrastim will generate a sustained increase in the number of peripheral blood progenitor cells capable of engraftment. It is used for mobilization of progenitor cells from the bone marrow to the peripheral blood with or withouth mobilizing chemotherapy. The harvested progenitor cells can be used for transplant following myelosuppressive or myeloablative therapies.
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