Mouse IL-28A/B (IFN-lambda 2/3) Antibody

Catalog # Availability Size / Price Qty
IL‑28B/IFN‑ lambda 3 Inhibition of EMCV-induced Cytopathy and Neutralization by Mouse IL‑28B/IFN‑ lambda 3 Antibody.
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Product Details
Citations (4)
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Mouse IL-28A/B (IFN-lambda 2/3) Antibody Summary

Species Reactivity
Detects mouse IL‑28B/IFN‑ lambda 3 in ELISAs. In sandwich immunoassays, 100% cross-reactivity with recombinant mouse IL-28A/IFN-lambda 2 and no cross-reactivity with recombinant human (rh) IL‑28A or rhIL-29 is observed.
Monoclonal Rat IgG2B Clone # 244716
Protein A or G purified from hybridoma culture supernatant
E. coli-derived recombinant mouse IL‑28B/IFN‑ lambda 3
Accession # Q8CGK6
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.
Endotoxin Level
<0.10 EU per 1 μg of the antibody by the LAL method.


Recommended Concentration

Mouse IL-28A/IFN-lambda 2 Sandwich Immunoassay

Recommended Concentration
ELISA Capture (Matched Antibody Pair)
2-8 µg/mL 

Use in combination with:

Detection Reagent: Mouse IL-28A/B (IFN-lambda 2/3) Biotinylated Antibody (Catalog # BAM17891)

Standard: Recombinant Mouse IL-28B/IFN-lambda 3 Protein (Catalog # 1789-ML)

Measured by its ability to neutralize IL‑28B/IFN‑ lambda 3 and IL-28A/IFN‑ lambda 2 inhibition of EMCV-induced cytopathy in the HepG2 human hepatocellular carcinoma cell line. Sheppard, P. et al. (2003) Nat. Immunol. 4:63. The Neutralization Dose (ND50) is typically 3-9 µg/mL in the presence of 400 ng/mL Recombinant Mouse IL‑28B/IFN‑ lambda 3.

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.

Scientific Data

Neutralization IL‑28B/IFN‑ lambda 3 Inhibition of EMCV-induced Cytopathy and Neutralization by Mouse IL‑28B/IFN‑ lambda 3 Antibody. View Larger

IL‑28B/IFN‑ lambda 3 Inhibition of EMCV-induced Cytopathy and Neutralization by Mouse IL‑28B/IFN‑ lambda 3 Antibody. Recombinant Mouse IL-28B/IFN-lambda 3 (Catalog # 1789-ML) reduces the Encephalomyocarditis Virus (EMCV)-induced cytopathy in the HepG2 human hepatocellular carcinoma cell line in a dose-dependent manner (orange line). Inhibition of EMCV activity elicited by Recombinant Mouse IL-28B/IFN-lambda 3 (400 ng/mL) is neutralized (green line) by increasing concentrations of Rat Anti-Mouse IL-28B/IFN-lambda 3 Monoclonal Antibody (Catalog # MAB17892). The ND50 is typically 3-9 µg/mL.

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.


Preparation and Storage

Reconstitute at 0.5 mg/mL in sterile PBS.
Reconstitution Buffer Available
Reconstitution Buffer 1 (PBS)
Catalog #
Size / Price
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: IL-28A/B (IFN-lambda 2/3)

Human IL-28A, IL-28B, and IL-29, also named interferon-lambda 2 (IFN-lambda 2), IFN-lambda 3, and IFN-lambda 1, respectively, are class II cytokine receptor ligands that are distantly related to members of the IL-10 family (11‑13% amino acid (aa) sequence identity) and the type I IFN family (15‑19% aa sequence identity) (1‑3). The genes encoding these three cytokines are localized to chromosome 19 and each is composed of multiple exons. The exon organization of these genes is also found in the IL-10 family genes but is distinct from the type I IFNs, which are encoded within a single exon. The expression of IL-28A, B, and IL-29 is induced by virus infection or double‑stranded RNA. All three cytokines exert bioactivities that overlap those of type I IFNs, including antiviral activity and up‑regulation of MHC class I antigen expression. The three proteins signal through the same heterodimeric receptor complex that is composed of the IL-10 receptor beta (IL-10 R beta ) and a novel IL-28 receptor  alpha (IL-28 R alpha, also known as IFN-lambda R1). Ligand binding to the receptor complex induces Jak kinase activation and STAT1 and STAT2 tyrosine phosphorylation. The phosphorylated STAT1 and STAT2 complex with IFN-regulatory factor 9 (IRF-9) to form the IFN-stimulated regulatory factor 3 (ISGF-3) transcription factor complex that is translocated to the nucleus. ISGF-3 binds to the IFN-stimulated response element (ISRE) present in the regulatory regions of the target genes. Mouse IL‑28B cDNA encodes a 193 amino acid residue precursor protein with a putative 15 aa signal peptide. It shares 61%, 62% and 52% aa sequence identity with human IL-28A, human IL-28B and human IL-29, respectively.

  1. Vilcek, J. (2003) Nature Immunol. 4:8.
  2. Sheppard, P. et al. (2003) Nature Immunol. 4:63.
  3. Kotenko, S.V. et al. (2003) Nature Immunol. 4:69.
Long Name
Interleukin 28A
Entrez Gene IDs
282617 (Human)
Alternate Names
IFNl2; IFNlambda 2; IL28A; IL-28A; IL-28A/B (IFN-lambda 2/3); IL28B; interferon lambda 2

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Citations for Mouse IL-28A/B (IFN-lambda 2/3) Antibody

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

4 Citations: Showing 1 - 4
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  1. Plasmacytoid dendritic cells from parent strains of the NZB/W F1 lupus mouse contribute different characteristics to autoimmune propensity
    Authors: Y Zhan, I Kong, M Chopin, C Macri, JG Zhang, J Xie, SL Nutt, M O'Keeffe, ED Hawkins, EF Morand, AM Lew
    Immunol. Cell Biol., 2020-02-05;0(0):.
    Species: Mouse
    Sample Types: Cell Culture Supernates
    Applications: ELISA Capture
  2. Interferon-?3 Promotes Epithelial Defense and Barrier Function Against Cryptosporidium parvum Infection
    Authors: SH Ferguson, DM Foster, B Sherry, ST Magness, DM Nielsen, JL Gookin
    Cell Mol Gastroenterol Hepatol, 2019-03-05;0(0):.
    Species: Mouse, Porcine
    Sample Types: In Vivo
    Applications: Neutralization
  3. Type I and type III interferons drive redundant amplification loops to induce a transcriptional signature in influenza-infected airway epithelia.
    Authors: Crotta S, Davidson S, Mahlakoiv T, Desmet C, Buckwalter M, Albert M, Staeheli P, Wack A
    PLoS Pathog, 2013-11-21;9(11):e1003773.
    Species: Mouse
    Sample Types: Whole Cells
    Applications: Neutralization
  4. IL-28 supplants requirement for T(reg) cells in protein sigma1-mediated protection against murine experimental autoimmune encephalomyelitis (EAE).
    Authors: Rynda A, Maddaloni M, Ochoa-Reparaz J, Callis G, Pascual DW
    PLoS ONE, 2010-01-14;5(1):e8720.
    Species: Mouse
    Sample Types: Cell Culture Supernates
    Applications: ELISA Development


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