• Assay Type

  Solid Phase Sandwich ELISA

• Format

  96-well strip plate

• Sample Type & Volume Required

  100 µL

• Range

  6.25 - 400 pg/mL

• Sufficient Materials

  For five 96-well plates*

• Specificity

  Please see the

* Provided that the recommended microplates, buffers, diluents, substrates and solutions are used, and the assay is run as summarized in the Assay Procedure provided.

Ancillary Reagent Kit Available  

DY008, DuoSet ELISA Ancillary Reagent Kit 2 -

This DuoSet ELISA Development kit contains the basic components required for the development of sandwich ELISAs to measure natural and Recombinant

Product Features

• Optimized capture and detection antibody pairings with recommended concentrations save lengthy development time

• Development protocols are provided to guide further assay optimization

• Assay can be customized to your specific needs

• Economical alternative to complete kits

Kit Content

• Capture Antibody

• Detection Antibody

• Recombinant Standard

• Streptavidin conjugated to horseradish-peroxidase (Streptavidin-HRP)

Other Reagents Required

  PBS: (Catalog # ), or 137 mM NaCl, 2.7 mM KCl, 8.1 mM Na  ₂HPO  ₄, 1.5 mM KH  ₂PO  ₄, pH 7.2 - 7.4, 0.2 µm filtered  
 
  Wash Buffer: (Catalog # ), or equivalent  
 
  Reagent Diluent*  
 
  Blocking Buffer*  
 
  Substrate Solution: 1:1 mixture of Color Reagent A (H  ₂O  ₂) and Color Reagent B (Tetramethylbenzidine) (Catalog # )  
 
  Stop Solution: 2 N H  ₂SO  ₄ (Catalog # )  
 
  Microplates: R&D Systems (Catalog # ), or equivalent  
 
  Plate Sealers: ELISA Plate Sealers (Catalog # ), or equivalent  
 

*For the Reagent Diluent and Blocking Buffer recommended for a specific DuoSet ELISA Development Kit, please see the product

Preparation and Storage

• Storage

  Store the unopened product at 2 - 8 °C. Do not use past expiration date.

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 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. Since OSM is also active on cells that do not express LIF R, a specific OSM receptor that does not involve LIF R must also exist. 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-Kaposis 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.

Human Oncostatin M (OSM) signals through two types of human OSM receptor complexes: the type I complex comprising the leukemia inhibitory factor receptor beta (LIF R beta) and gp130 and the type II complex made up of OSM receptor beta (OSM R beta) and gp130. In contrast, mouse OSM signals only through the mouse OSM R beta and gp130 complex. Human and mouse OSM R beta are 55% identical at the amino acid sequence level.

• Entrez Gene IDs:

  5008 (Human); 18413 (Mouse);

• Aliases:

  MGC20461; oncostatin M; oncostatin-M; OSM