Mouse IL-12/IL-23 p40 Antibody Summary
Accession # P43432
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.
IFN-gamma Secretion Induced by IL-12 and Neutralization by Mouse IL-12/IL-23 p40 Antibody. Recombinant Mouse IL-12 (Catalog # 419-ML) stimulates IFN-gamma secretion in mouse splenocytes in a dose-dependent manner (orange line), as measured by the Mouse IFN-gamma Quantikine ELISA Kit (Catalog # MIF00). Under these conditions, IFN-gamma secretion elicited by Recombinant Mouse IL-12 (30 pg/mL) is neutralized (green line) by increasing concentrations of Mouse IL-12/IL-23 p40 Monoclonal Antibody (Catalog # MAB4992). The ND50 is typically 1-10 ng/mL.
Preparation and Storage
- 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: IL-12/IL-23 p40
Interleukin 12, also known as natural killer cell stimulatory factor (NKSF) or cytotoxic lymphocyte maturation factor (CLMF), is a pleiotropic cytokine originally identified in the medium of activated human B lymphoblastoid cell lines. IL-12 has multiple effects on T cells and NK cells and is a key mediator in the development of Th1 cells.
IL-12 is a heterodimeric cytokine containing two disulfide-linked subunits, p35 and p40. Human and mouse IL-12 share 70% and 60% amino acid sequence identity in their p40 and p35 subunits, respectively. Although mouse IL-12 is active on human or mouse IL-12 responsive cells, human IL-12 is not active on mouse cells.
The disulfide-linked mouse p40 homodimer can bind to IL-12 receptors and is an antagonist of IL-12 activities in vitro. The mouse p40 monomer is at least ten times less active than the homodimer as an IL-12 antagonist. At the present time, the existence and the physiological role of mouse p40 homodimer in vivo remains to be determined.
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