O9635 Sigma-Aldrich

Oncostatin M human

BioReagent, ≥97% (SDS-PAGE), recombinant, expressed in E. coli, lyophilized powder, suitable for cell culture

Synonym: OSM



Related Categories Cell Biology, Cell Signaling and Neuroscience, Cytokines and Growth Factors, Cytokines, Growth Factors and Hormones, Embryonic Stem Cell Biology Growth Factors,
Quality Level   200
biological source   human
recombinant   expressed in E. coli
product line   BioReagent
assay   ≥97% (SDS-PAGE)
form   lyophilized powder
potency   ≤1.000 ng/mL ED50
mol wt   ~22 kDa
packaging   pkg of 10 μg
storage condition   avoid repeated freeze/thaw cycles
application(s)   cell culture | mammalian: suitable
impurities   endotoxin, tested
color   white
solubility   soluble 0.100 mL, clear, colorless (Solvent-PBS + 0.1% BSA)
UniProt accession no.   P13725
storage temp.   −20°C
Gene Information   human ... OSM(5008)


General description

Oncostatin M (OSM) is produced by activated T cells, monocytes and Kaposi’s sarcoma cells. OSM shares several structural and functional characteristics with leukemia inhibitory factor (LIF), interleukin-6 (IL-6), and ciliary neurotrophic factor (CNTF).


Human oncostatin-M has been used to stimulate bovine full-depth cartilage explants. It has also been used to culture embryonic stem cells in standard minimum essential medium-α.

Biochem/physiol Actions

Oncostatin M (OSM) is a growth and differentiation factor that participates in the regulation of neurogenesis, osteogenesis and hematopoiesis. It can exert both stimulatory and inhibitory effects on cell proliferation. OSM 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. interleukin-6 (IL-6), granulocyte-macrophage colony-stimulating factor (GM-CSF) and granulocyte-colony-stimulating factor (G-CSF)] from endothelial cells.

Oncostatin M (OSM), LIF, G-CSF, IL-6, and CNTF are structurally related members of the same cytokine family sharing similarities in their primary amino acid sequences, predicted secondary structure, and receptor components. OSM is a growth-regulating cytokine, affecting a number of tumor and normal cells. This material was first identified by its ability to inhibit the growth of A375 melanoma cells and other human tumor cells, but not inhibit the growth of normal human fibroblasts. It acts synergistically with TGF β1 to inhibit the proliferation of tumor cells like A375 melanoma cells. It induces an increase in LDL receptor expression and LDL uptake by hepatoma cells. OSM activates synovial fibroblast-like cells to produce urokinase type plasminogen activator. OSM is secreted by macrophages and activated T lymphocytes.

Physical form

Lyophilized from a 0.2 μm filtered solution in 10 mM acetic acid, containing 50 μg of bovine serum albumin per 1 μg of cytokine.

Analysis Note

The proliferative activity of human oncostatin M is tested in culture by using a human erythroleukemic cell line, TF-1.

Safety & Documentation

Safety Information

NONH for all modes of transport
WGK Germany 
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable


Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles
Peer-Reviewed Papers


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