Background
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 murine cells. Recombinant human Oncostatin M is a 26.0 kDa protein, containing 227 amino acid residues.
Specifications
Additional Names
OSM
Preparation
The ED50 was determined by the dose - dependent stimulation of the proliferation of human TF - 1 cells is ? 2 ng/ml, corresponding to a specific activity of ? 5 x 105 units/mg.
Location
MAAIGSCSKE YRVLLGQLQK QTDLMQDTSR LLDPYIRIQG LDVPKLREHC RERPGAFPSE ETLRGLGRRG FLQTLNATLG CVLHRLADLE QRLPKAQDLE RSGLNIEDLE KLQMARPNIL GLRNNIYCMA QLLDNSDTAE PTKAGRGASQ PPTPTPASDA FQRKLEGCRF LHGYHRFMHS VGRVFSKWGE SPNRSRRHSP HQALRKGVRR TRPSRKGKRL MTRGQLPR
Source
E. coli
Reactivity
n/a
Tested Application
n/a
Storage
The lyophilized Oncostatin M recombinant protein is stable for at least 2 years from date of receipt at -20ËšC. Reconstituted Oncostatin M is stable for at least 3 months when stored in working aliquots with a carrier protein at -20ËšC. As with any protein, exposing Oncostatin M recombinant protein to repeated freeze / thaw cycles is not recommended. When working with proteins care should be taken to keep recombinant protein at a cool and stable temperature.
Species Reactivity
n/a
Purity
Greater than 98% by SDS-PAGE gel and HPLC analyses.
Endotoxin level is less than 0.1 ng per μg (1EU/μg).
