BioAim Scientific (Kanada)
The Bioaim Human OSM ELISA kit is a solid phase sandwich ELISA (enzyme-linked immunosorbent assay) for the quantitative measurement of OSM in human serum and plasma. An antibody specific for human OSM was coated on a 96-well plate. Standards and samples are added to the wells and any OSM present binds to the immobilized antibody. The wells are washed and biotinylated anti-human OSM antibody is added. After washing away unbound biotinylated antibody, HRP-conjugated streptavidin is added to the wells. The wells are again washed and TMB substrate solution is added, which produces a blue color in direct proportion to the amount of OSM present in the initial sample. The Stop Solution changes the color from blue to yellow, and the microwell absorbances are read at 450 nm.Research Area inflammation;
oncostatin M( Oncostatin M ) Background: OSM is a pleiotropic cytokine that belongs to the interleukin 6 group of cytokines. Of these cytokines, it most closely resembles leukemia inhibitory factor (LIF) in both structure and function. The human OSM cDNA encodes a 252 amino acid pre-pro-OSM polypeptide with a 25 residue hydrophobic signal peptide and a hydrophilic C-terminal domain that are proteolytically processed to generate the 196 residue mature form of OSM. Although both mature and pro-OSM are equally active in radio-receptor assays, the mature OSM is 5- to 60-fold more active in growth inhibition assays. Thus, proteolytic processing of the pro-OSM peptide may be important in regulating the in vivo activities of OSM. OSM signals through cell surface receptors that contain the protein gp130. The type I receptor is composed of gp130 and LIFR, the type II receptor is composed of gp130 and OSMR. OSM initiates its biological activities by binding to specific cell surface receptors. The gp130, a signal transducing component (beta subunit) of the IL-6, LIF and CNTF receptor complexes, was identified as a low-affinity OSM receptor that does not transduce OSM signals. The low affinity LIF receptor (LIF R, a gp130-related protein) has now been identified to be a component of a high-affinity OSM receptor that will transduce OSM signals.
< 1 pg/ml
Serum, plasma, Cell culture supernatant
|Sensitivity||< 1 pg/ml|
|Antigen Name||oncostatin M|
|Detection Range||1.4-1000 pg/ml|