Human IL-28B/IFN-lambda 3 Antibody

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Detection of Human IL‑28B/IFN‑ lambda 3 by Western Blot.
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Product Details
Citations (4)
Supplemental Products

Human IL-28B/IFN-lambda 3 Antibody Summary

Species Reactivity
Detects human IL‑28B/IFN‑ lambda 3 in direct ELISAs and Western blots. In direct ELISAs, no cross-reactivity with recombinant human (rh) IL-28A, rhIL-29, or recombinant mouse IL-28 is observed.
Monoclonal Mouse IgG2A Clone # 567143
Protein A or G purified from hybridoma culture supernatant
Chinese hamster ovary cell line CHO-derived recombinant human IL‑28B/IFN‑ lambda 3
Arg30-Val200 (Lys74Arg)
Accession # AAN28264
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.


Recommended Concentration
Western Blot
2 µg/mL
See below

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

Western Blot Detection of Human IL-28B/IFN-?3 antibody by Western Blot. View Larger

Detection of Human IL‑28B/IFN‑ lambda 3 by Western Blot. Western blot shows lysates of human monocytes treated (+) with 10 ng/mL of rhIFN-alpha for 24 hours and then further stimulated with 10 µg/mL of poly I:C for 48 hours. PVDF Membrane was probed with 2 µg/mL of Mouse Anti-Human IL-28B/IFN-lambda 3 Monoclonal Antibody (Catalog # MAB5259) followed by HRP-conjugated Anti-Mouse IgG Secondary Antibody (Catalog # HAF007). A specific band was detected for IL-28B/IFN-lambda 3 at approximately 19 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.

Reconstitution Calculator

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Preparation and Storage

Reconstitute at 0.5 mg/mL in sterile PBS.
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-28B/IFN-lambda 3

IL-28B (also named interferon-lambda 3, IFN-lambda 3), IL-28A (IFN-lambda 2) and IL-29 (IFN-lambda 1) are type III interferons that are class II cytokine receptor ligands (1‑4). They are distantly related to members of the IL-10 family and type I IFN family (1‑4). Human IL-28B cDNA encodes a 200 amino acid (aa) protein with a 25 aa signal peptide and a 175 aa mature protein that lacks N-glycosylation sites. Mature human IL-28B shares 64% and 75% aa sequence identity with mouse and canine IL-28B, respectively, and is active across species (5). Human IL-28B shares 94% and 69% aa identity with human IL-28A and IL-29, respectively (4). Type III interferons are widely expressed, but are mainly produced by antigen presenting cells in response to viruses and double-stranded RNA that interact with Toll-like receptors or RIG-1 family helicases (2‑6). They signal through a widely expressed receptor that is a heterodimer of the IL-10 receptor beta (IL-10 R beta ) and IL-28 receptor alpha (IL-28 R alpha ; also called IFN-lambda R1) (2, 3, 7, 9). Interaction of either type I or type III IFNs with their receptors activates similar pathways, including JAK tyrosine kinase activation, STAT phosphorylation and formation of the IFN-stimulated regulatory factor 3 (ISGF-3) transcription factor complex (1‑3). Both type I and III IFNs induce anti-viral activity and upregulate MHC class I antigen expression (2‑6). Cell lines responsive to type III IFNs are also responsive to type I IFNs, but in general, higher concentrations of type III IFNs are needed for similar in vitro responses (8). In vivo, however, type III IFNs enhance levels of IFN-gamma in serum, suggesting that the robust anti-viral activity of type III IFNs may stem in part from activation of the immune system (5, 7). Anti-proliferative and antitumor activity in vivo has also been shown for type III IFNs (9‑11).

  1. Chen, Q. et al. (2006) Vitam. Horm. 74:207.
  2. Sheppard, P. et al. (2003) Nat. Immunol. 4:63.
  3. Kotenko, S.V. et al. (2003) Nat. Immunol. 4:69.
  4. Bartlett, N.W. et al. (2005) J. Gen. Virol. 86:1589.
  5. Ank, N. et al. (2006) J. Virol. 80:4501.
  6. Onoguchi, K. et al. (2007) J. Biol. Chem. 282:7576.
  7. Siebler, J. et al. (2007) Gastroenterology 132:358.
  8. Meager, A. et al. (2005) Cytokine 31:109.
  9. Lasfar, A. et al. (2006) Cancer Res. 66:4468.
  10. Sato, A. et al. (2006) J. Immunol. 176:7686.
  11. Zitzmann, K. et al. (2006) Biochem. Biophys. Res. Commun. 344:1334.
Long Name
Interleukin 28B
Entrez Gene IDs
282617 (Human); 338374 (Mouse)
Alternate Names
interleukin-28B; IFN-lambda 3; IL28B; IL-28B; IL28C; interferon, lambda 3

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Citations for Human IL-28B/IFN-lambda 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. Fusing the 3'UTR of seed storage protein genes leads to massive recombinant protein accumulation in seeds
    Authors: Kanai, M;Sugiyama, M;Kondo, M;Yamada, K;Nishimura, M;Mano, S;
    Scientific reports
    Species: Plant - Arabidopsis thaliana
    Sample Types: Cell Supernates
    Applications: Western Blot
  2. Macrophage migration inhibitory factor enhances influenza-associated mortality in mice
    Authors: CA Smith, DJ Tyrell, UA Kulkarni, S Wood, L Leng, RL Zemans, R Bucala, DR Goldstein
    JCI Insight, 2019-07-11;4(13):.
    Species: Human
    Sample Types: Cell Lysates
    Applications: Western Blot
  3. Organotypic models of type III interferon-mediated protection from Zika virus infections at the maternal-fetal interface
    Authors: J Corry, N Arora, CA Good, Y Sadovsky, CB Coyne
    Proc. Natl. Acad. Sci. U.S.A., 2017-08-07;0(0):.
    Species: Human
    Sample Types: Whole Cells
    Applications: Neutralization
  4. Hepatitis C virus pathogen associated molecular pattern (PAMP) triggers production of lambda-interferons by human plasmacytoid dendritic cells.
    Authors: Stone, Amy E L, Giugliano, Silvia, Schnell, Gretja, Cheng, Linling, Leahy, Katelyn, Golden-Mason, Lucy, Gale, Michael, Rosen, Hugo R
    PLoS Pathog, 2013-04-18;9(4):e1003316.
    Species: Human
    Sample Types: Cell Lysates
    Applications: Western Blot


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