Human IL-28B/IFN-lambda 3 Antibody
Human IL-28B/IFN-lambda 3 Antibody Summary
Accession # Q81Z19
This antibody functions as an ELISA capture antibody when paired with Mouse Anti-Human IL‑28B/IFN‑ lambda 3 Monoclonal Antibody (Catalog # MAB52591), Mouse Anti-Human IL‑28B/IFN‑ lambda 3 Monoclonal Antibody (Catalog # MAB52591R) or Mouse Anti-Human IL‑28B/IFN‑ lambda 3 Monoclonal Antibody (Catalog # MAB52594).
This product is intended for assay development on various assay platforms requiring antibody pairs.
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.
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-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).
- Chen, Q. et al. (2006) Vitam. Horm. 74:207.
- Sheppard, P. et al. (2003) Nat. Immunol. 4:63.
- Kotenko, S.V. et al. (2003) Nat. Immunol. 4:69.
- Bartlett, N.W. et al. (2005) J. Gen. Virol. 86:1589.
- Ank, N. et al. (2006) J. Virol. 80:4501.
- Onoguchi, K. et al. (2007) J. Biol. Chem. 282:7576.
- Siebler, J. et al. (2007) Gastroenterology 132:358.
- Meager, A. et al. (2005) Cytokine 31:109.
- Lasfar, A. et al. (2006) Cancer Res. 66:4468.
- Sato, A. et al. (2006) J. Immunol. 176:7686.
- Zitzmann, K. et al. (2006) Biochem. Biophys. Res. Commun. 344:1334.
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