Fully biologically active when compared to the standard. The ED50 as determined by the dose-dependent stimulation of the proliferation of human TF-1 cells is < 2ng/ml, corresponding to a specific activity of >5.0×105 units/mg.
纯度
> 95 % by SDS-PAGE and HPLC analyses.
内毒素水平
Level Less than 1EU/µg of rHuOSM(227a.a.) as determined by LAL method
We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1% BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at < -20°C. Further dilutions should be made in appropriate buffered solutions.
储存条件
4 °C
Esmaeli, Allameh, Soleimani, Rahbarizadeh, Frouzandeh-Moghadam: "The role of albumin and PPAR-? in differentiation-dependent change of fatty acid profile during differentiation of mesenchymal stem cells to hepatocyte-like cells." in: Cell biochemistry and function, Vol. 32, Issue 5, pp. 410-9, (2014) (PubMed).
OSM Protein, OncoM Protein, oncostatin M Protein, OSM Protein, Osm Protein
背景
Oncostatin M (OSM) is a growth and differentiation factor that participates in the regulation of neurogenesis, osteogenesis and hematopoiesis. Produced by activated T cells, monocytes and Kaposi's sarcoma cells, OSH can exert both stimulatory and inhibitory effects on cell proliferation. It stimulates the proliferation of fibroblasts, smooth muscle cells and Kaposi's sarcoma cells, but, inhibits the growth of some normal and tumor cell lines. It also promotes cytokine release (e.g. IL-6, GM-CSF and G-CSF) from endothelial cells, and enhances the expression of low-density lipoprotein receptor in hepatoma cells. OSM share several structural and functional characteristics with LIF, IL-6, and CNTF. Human OSM is active on mouse cells. Synonym: Oncostatin-M (OSM)(227a.a.) , Human. Formulation: Lyophilized from a 0.2µm filtered concentrated solution in PBS, pH 7.4.
分子量
Approximately 26.0 kDa, a single non-glycosylated polypeptide chain containing 227 amino acids.