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Human IL-12 Antibody

R&D Systems, part of Bio-Techne | Catalog # AF-219-NA

R&D Systems, part of Bio-Techne
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AF-219-NA
AF-219-SP

Key Product Details

Species Reactivity

Validated:

Human

Cited:

Human

Applications

Validated:

Immunocytochemistry, Neutralization, Western Blot

Cited:

Affinity Chromatography, Bioassay, Immunocytochemistry, Immunohistochemistry, Neutralization

Label

Unconjugated

Antibody Source

Polyclonal Goat IgG

Product Specifications

Immunogen

S. frugiperda insect ovarian cell line Sf 21-derived recombinant human IL‑12 heterodimer
Arg23-Ser219 of p35; Ile23-Ser328 of p40
Accession # P29459 (p35) & P29460 (p40)

Specificity

Detects human IL-12 in direct ELISAs and Western blots.

Clonality

Polyclonal

Host

Goat

Isotype

IgG

Endotoxin Level

<0.10 EU per 1 μg of the antibody by the LAL method.

Scientific Data Images for Human IL-12 Antibody

Cell Proliferation Induced by IL-12 and Neutralization by Human IL-12 Antibody.

Cell Proliferation Induced by IL-12 and Neutralization by Human IL-12 Antibody.

Recombinant Human IL-12 (219-IL) stimulates proliferation in PHA-activated human peripheral blood mononuclear cells (PBMC) in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human IL-12 (1 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human IL-12 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-219-NA). The ND50 is typically 5-50 ng/mL.

Detection of IL-12 in Human PBMCs.

IL-12 was detected in immersion fixed Human PBMCs using Goat Anti-Human IL-12 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-219-NA) at 15 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm . View our protocol for Fluorescent ICC Staining of Cells on Coverslips.

Applications for Human IL-12 Antibody

Application
Recommended Usage

Immunocytochemistry

5-15 µg/mL
Sample: Immersion fixed human PBMCs

Western Blot

0.1 µg/mL
Sample: Recombinant Human IL-12 (Catalog # 219-IL)

Neutralization

Measured by its ability to neutralize IL‑12-induced proliferation in PHA-activated human peripheral blood mononuclear cells (PBMC). Yokota, T. et al. (1986) Proc. Natl. Acad. Sci. USA 83:5894. The Neutralization Dose (ND50) is typically 5-50 ng/mL in the presence of 1 ng/mL Recombinant Human IL‑12.
Please Note: Optimal dilutions of this antibody should be experimentally determined.

Reviewed Applications

Read 1 review rated 5 using AF-219-NA in the following applications:

Formulation, Preparation, and Storage

Purification

Antigen Affinity-purified

Reconstitution

Reconstitute at 0.2 mg/mL in sterile PBS. For liquid material, refer to CoA for concentration.

Reconstitution Buffer Available:
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Formulation

Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied either lyophilized or as a 0.2 µm filtered solution in PBS.

Shipping

Lyophilized product is shipped at ambient temperature. Liquid small pack size (-SP) is shipped with polar packs. Upon receipt, store immediately at the temperature recommended below.

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: IL-12

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. The p40 subunit of IL-12 has been shown to have extensive amino acid sequence homology to the extracellular domain of the human IL-6 receptor while the p35 subunit shows distant but significant sequence similarity to IL-6, G-CSF, and chicken MGF. These observations have led to the suggestion that IL-12 might have evolved from a cytokine/soluble receptor complex. Human and murine IL-12 share 70% and 60% amino acid sequence homology in their p40 and p35 subunits, respectively. IL-12 apparently shows species specificity with human IL-12 reportedly showing minimal activity in the murine system.

IL-12 is produced by macrophages and B lymphocytes and has been shown to have multiple effects on T cells and natural killer (NK) cells. These effects include inducing production of IFN-gamma and TNF by resting and activated T and NK cells, synergizing with other IFN-gamma  inducers at both the transcriptional and post-transcriptional levels. This interaction induces IFN-gamma  gene expression, enhancing the cytotoxic activity of resting NK and T cells, inducing and synergizing with IL-2 in the generation of lymphokine-activated killer (LAK) cells, acting as a co-mitogen to stimulate proliferation of resting T cells, and inducing proliferation of activated T and NK cells. Current evidence indicates that IL-12, produced by macrophages in response to infectious agents, is a central mediator of the cell-mediated immune response by its actions on the development, proliferation, and activities of TH1 cells. In its role as the initiator of cell-mediated immunity, it has been suggested that IL-12 has therapeutic potential as a stimulator of cell-mediated immune responses to microbial pathogens, metastatic cancers, and viral infections such as AIDS.

Long Name

Interleukin 12

Alternate Names

CLMF1, IL12, IL12A, NKSF1

Entrez Gene IDs

3592 (Human); 16159 (Mouse); 84405 (Rat); 397053 (Porcine); 403977 (Canine); 102115316 (Cynomolgus Monkey); 493741 (Feline); 703205 (Rhesus Macaque)

Gene Symbol

IL12A

Additional IL-12 Products

Product Documents for Human IL-12 Antibody

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human IL-12 Antibody

For research use only

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