Uses
For research use only. Not for use in diagnostic procedures.
Human Platelet Factor-4 (PF4)/ CXCL4 (chemokine (C-X-C motif) ligand 4) ELISA Kit has been used to measure PF-4 / CXCL4 serum level in chronic myelomonocytic leukemia (CMML) patients.', 'Human Platelet Factor-4 / CXCL4 ELISA Kit has also been used in the measurement of platelet factor-4 in serum samples of prostate cancer and pseudoxanthoma elasticum patients.
General Description
Platelet factor-4 (PF-4) is a CXC chemokine that is expressed in megakaryocytes and stored in the alpha-granules of platelets. The gene encoding this protein is localized on human chromosome 4. Recombinant human PF-4 is a 7.8kDa protein containing 70 amino acid residues, including the four highly conserved residues present in CXC chemokines.
Biochem/physiol Actions
Platelet factor-4 (PF-4) is chemotactic towards neutrophils and monocytes and has been shown to inhibit angiogenesis. This protein associates with heparin and neutralizes it. It also neutralizes various negatively charged proteoglycans.
