Identification
Name Plerixafor
Accession Number DB06809
Type small molecule
Description Plerixafor is a hematopoietic stem cell mobilizer. It is used to stimulate the release of stem cells from the bone marrow into the blood in patients with non-Hodgkin lymphoma and multiple myeloma for the purpose of stimulating the immune system. These stem cells are then collected and used in autologous stem cell transplantation to replace blood-forming cells that were destroyed by chemotherapy. Plerixafor has orphan drug status in the United States and European Union; it was approved by the U.S. Food and Drug Administration on December 15, 2008.
Structure
Categories (*)
Molecular Weight 502.782
Groups approved
Monoisotopic Weight 502.447143768
Pharmacology
Indication Used in combination with granulocyte-colony stimulating factor (G-CSF, filgrastim) to mobilize hematopoietic stem cells to the peripheral blood for collection and subsequent autologous transplantation in patients with non-Hodgkin's lymphoma (NHL) and multiple myeloma (MM).
Mechanism of action Plerixafor inhibits the CXCR4 chemokine receptors on CD34+ cells and reversibly blocks binding of the ligand, stromal cell-derived factor-1-alpha (SDF-1?). By blocking the interaction between SDF-1? and CXCR4 with plerixafor, mobilization of progenitor cells is triggered. Filgrastim, a granulocyte-colony stimulating factor, is added to enhance CD34+ cell mobilization, thus increasing the yield of stem cells- an important determinant of graft adequacy.
Absorption Pharmacokinetic profile follows a two-compartment model with first-order absorption. A median peak plasma concentration of 0.24 mg/kg of plerixafor occurred 30-60 minutes after subcutaneous dose.
Protein binding 58%
Biotransformation Metabolism does not involved CYP isoenzymes
Route of elimination 0.24 mg/kg, healthy subjects: ~70% of the parent drug is excreted in urine in the first 24 hours.
Toxicity LD50, mouse, SC: 16.3 mg/kg; LD50, rat, SC: >50 mg/kg; LD50, mouse and rat, IV injection: 5.2 mg/kg
Affected organisms
  • Humans and other mammals
Interactions
Drug Interactions Not Available
Food Interactions Not Available
C-X-C chemokine receptor type 4
Name C-X-C chemokine receptor type 4
Gene Name CXCR4
Pharmacological action yes
Actions antagonist
References
  • Uy GL, Rettig MP, Cashen AF: Plerixafor, a CXCR4 antagonist for the mobilization of hematopoietic stem cells. Expert Opin Biol Ther. 2008 Nov;8(11):1797-804. - Pubmed
  • Jujo K, Ii M, Sekiguchi H, Klyachko E, Misener S, Tanaka T, Tongers J, Roncalli J, Renault MA, Thorne T, Ito A, Clarke T, Kamide C, Tsurumi Y, Hagiwara N, Qin G, Asahi M, Losordo DW: CXC-chemokine receptor 4 antagonist AMD3100 promotes cardiac functional recovery after ischemia/reperfusion injury via endothelial nitric oxide synthase-dependent mechanism. Circulation. 2013 Jan 1;127(1):63-73. doi: 10.1161/CIRCULATIONAHA.112.099242. Epub 2012 Nov 30. - Pubmed
DTHybrid score 1.2375