Human Oncostatin M/OSM Antibody

  
  • Species Reactivity
    Human
  • Specificity
    Detects human Oncostatin M/OSM in direct ELISAs. In direct ELISAs, no cross-reactivity with recombinant mouse Oncostatin M, recombinant human (rh) CLC, rhCNTF, rhCardiotrophin-1, rhIL-6, rhIL-11, or rhLIF is observed.
  • Source
    Monoclonal Mouse IgG2A Clone # 17022
  • Purification
    Protein A or G purified from ascites
  • Immunogen
    E. coli-derived recombinant human Oncostatin M/OSM
    Ala26-Arg221
    Accession # P13725
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Endotoxin Level
    <0.10 EU per 1 μg of the antibody by the LAL method.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • CyTOF-ready
    Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.
  • Intracellular Staining by Flow Cytometry
    2.5 µg/106 cells
    See below
  • Neutralization
    Measured by its ability to neutralize Oncostatin M/OSM-induced proliferation in the TF‑1 human erythroleukemic cell line. Kitamura, T. et al. (1989) J. Cell Physiol. 140:323. The Neutralization Dose (ND50) is typically 0.3‑1.5 µg/mL in the presence of 2 ng/mL Recombinant Human Oncostatin M/OSM.
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Data Examples
Intracellular Staining by Flow Cytometry
Detection of Oncostatin M/OSM in Human Dendritic Cells by Flow Cytometry. Human monocyte-derived dendritic cells were stained with Mouse Anti-Human Oncostatin M Monoclonal Antibody (Catalog # MAB2951, filled histogram) or isotype control antibody (Catalog # MAB003, open histogram), followed by Phycoerythrin-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # F0102B). To facilitate intracellular staining, cells were fixed with paraformaldehyde and permeabilized with saponin.
Cell Proliferation Induced by Oncostatin M/OSM and Neutralization by Human Oncostatin M/OSM Antibody. Recombinant Human Oncostatin M (Catalog # 295‑OM) stimulates proliferation in the TF‑1 human erythro­leukemic cell line in a dose-dependent manner (orange line). Prolif­eration elicited by Recom­binant Human Oncostatin M (2 ng/mL) is neutralized (green line) by increasing concentrations of Mouse Anti-Human Oncostatin M Monoclonal Antibody (Catalog # MAB2951). The ND50 is typically 0.3‑1.5 µg/mL.
Preparation and Storage
  • Reconstitution
    Sterile PBS to a final concentration of 0.5 mg/mL.
  • Shipping
    The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
  • Stability & Storage
    Use a manual defrost freezer and avoid repeated freeze-thaw cycles.
    • 12 months from date of receipt, -20 to -70 °C as supplied.
    • 1 month, 2 to 8 °C under sterile conditions after reconstitution.
    • 6 months, -20 to -70 °C under sterile conditions after reconstitution.
Background: Oncostatin M/OSM
Oncostatin M (OSM) is a cytokine originally isolated from medium conditioned by PMA-treated U-937 human histiocytic leukemia cells based on its ability to inhibit growth of A375 melanoma cells. 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 is a pleiotropic cytokine that initiates its biological activities by binding to specific cell surface receptors. The biological activity of human OSM is mediated either by the LIF/OSM receptor complex composed of gp130 and LIF R alpha or by a human OSM specific receptor composed of gp130 and OSM R alpha. 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 been identified to be a component of a high-affinity OSM receptor that will transduce OSM signals. Besides its growth inhibitory activities on human A375 melanoma and mouse M1 myeloid leukemic cells, as well as on other solid tumor cells, OSM also has growth stimulatory activities on normal fibroblasts, AIDS-Kaposi’s sarcoma cells, and a human erythroleukemia cell line, TF-1. Other OSM-mediated activities reported to date include: stimulation of plasminogen activator activity in cultured bovine aortic endothelial cells; regulation of IL-6 expression in human endothelial cells; and stimulation of LDL uptake and up-regulation of cell surface LDL receptors in HepG2 cells.

  • Entrez Gene IDs:
    5008 (Human); 18413 (Mouse)
  • Alternate Names:
    MGC20461; oncostatin M; oncostatin-M; OSM
Related Research Areas
Isotype Controls
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Mouse IgG2A Isotype Control

Ctrl MAB003 32  
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Mouse IgG2A Isotype Control

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Secondary Antibodies
Description Application Cat# Citations Images  

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Donkey Anti-Mouse IgG NorthernLights™ NL557-conjugate Antibody

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Donkey Anti-Mouse IgG Biotinylated Antibody

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Mouse IgG HRP-conjugated Antibody

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Donkey Anti-Mouse IgG NorthernLights™ NL637-conjugated Antibody

Flow, IHC, ICC NL008 8
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Mouse F(ab)2 IgG (H+L) APC-conjugated Antibody

Flow F0101B 2  
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Donkey Anti-Mouse IgG NorthernLights™ NL493-conjugated Antibody

Flow, IHC, ICC NL009 5
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Mouse F(ab)2 IgG (H+L) Fluorescein-conjugated Antibody

Flow F0103B 5  
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Goat Anti-Mouse IgG Biotinylated Antibody

WB BAF007 4
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Mouse IgG Antibody

WB AF007 4
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Mouse/Rabbit IgG VisUCyte HRP Polymer Antibody

IHC VC002  
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Mouse IgG VisUCyte HRP Polymer Antibody

IHC VC001  
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Rat Anti-Mouse IgG2A PE-conjugated Antibody

Flow F0129 1  
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Mouse F(ab)2 IgG (H+L) PerCP-conjugated Antibody

Flow F0114  
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Goat Anti-Mouse IgG Fc Affinity Purified Polyclonal Ab

G-202-C 2
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Mouse IgG2A Antibody

Flow MAB0032  
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Rat Anti-Mouse IgG2A APC-conjugated Antibody

Flow F0130  
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Rat Anti-Mouse IgG2A PerCP-conjugated Antibody

Flow F0131  
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