Peripheral blood stem cell mobilization. A role for CXC chemokines.
Chemokines induce rapid hematopoietic stem and progenitor cell mobilization and synergize with hematopoietic cytokines in mobilizing stem and progenitor cells. These proteins alone and in combination offer new paradigms for autologous and allogeneic peripheral blood stem cell transplantation (PBSCT). The mechanisms responsible for hematopoietic stem cell (HSC) mobilization either with growth factors or chemokines are largely unknown, but a better understanding of these mechanisms will permit the development of novel, more rapid and efficacious regimens. Studies presented herein indicate that the CXCR2 chemokine receptor that interacts with selective chemokine ligands, particularly GRObeta/CXCL2 and GRObeta-T, may be the dominant receptor mediating hematopoietic cell mobilization, and that polymorphonuclear neutrophils may be the primary CXCR2 expressing target cell for stem and progenitor cell mobilization.
Pelus
Louis M
LM
Department of Microbiology and Immunology and the Walther Oncology Center, Walther Cancer Institute, Indiana University School of Medicine, Indianapolis, IN 46202, USA. lpelus@iupui.edu
Horowitz
Daniel
D
Cooper
Scott C
SC
King
Andrew G
AG
D000818:Animals; D019743:Chemokines, CXC / Q000494:pharmacology / Q000627:therapeutic use*; D004357:Drug Synergism; D004359:Drug Therapy, Combination; D016298:Hematopoietic Cell Growth Factors / Q000494:pharmacology / Q000627:therapeutic use; D019650:Hematopoietic Stem Cell Mobilization / Q000379:methods*; D006801:Humans; D009504:Neutrophils / Q000187:drug effects; D036102:Peripheral Blood Stem Cell Transplantation / Q000379:methods
D019743:Chemokines, CXC; D016298:Hematopoietic Cell Growth Factors