Description
Principle of the assay: This kit was based on sandwich enzyme-linked immune-sorbent assay technology. Anti- TPO polyclonal antibody was pre-coated onto 96-well plates. And the biotin conjugated anti- TPO polyclonal antibody was used as detection antibodies. The standards, test samples and biotin conjugated detection antibody were added to the wells subsequently, and wash with wash buffer. Avidin-Biotin-Peroxidase Complex was added and unbound conjugates were washed away with wash buffer. TMB substrates were used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the TPO amount of sample captured in plate. Read the O.D. absorbance at 450nm in a microplate reader, and then the concentration of TPO can be calculated.
Background: Thrombopoietin (THPO) also known as megakaryocyte growth and development factor (MGDF) is a protein that in humans is encoded by the THPO gene. The gene is 6.2 kb long and contains 6 exons and 5 introns, and maps to 3q27. THPO was expressed from both promoters in HEK293T human embryonic kidney cells and in HepG2 adult liver cells. The protein encoded by this gene is a humoral growth factor that is necessary for megakaryocyte proliferation and maturation, as well as for thrombopoiesis. This protein is the ligand for MLP/C_MPL, the product of myeloproliferative leukemia virus oncogene