Key Product Details

Species Reactivity

Validated:

Human

Cited:

Human, Mouse, Primate - Chlorocebus aethiops (African Green Monkey)

Applications

Validated:

Western Blot, Flow Cytometry, CyTOF-ready

Cited:

Western Blot, Neutralization

Label

Unconjugated

Antibody Source

Polyclonal Sheep IgG
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Product Specifications

Immunogen

Mouse myeloma cell line NS0-derived recombinant human IL-28 R alpha /IFN-lambda R1
Arg21-Ala228
Accession # Q8IU57

Specificity

Detects human IL-28 R alpha in direct ELISAs and Western blots. In direct ELISAs, approximately 5% cross-reactivity with recombinant mouseIL‑28 R alpha is observed.

Clonality

Polyclonal

Host

Sheep

Isotype

IgG

Scientific Data Images for Human IL‑28 R alpha /IFN‑ lambda  R1 Antibody

Detection of Human IL-28 Ra/IFN-? R1 antibody by Western Blot.

Detection of Human IL‑28 R alpha /IFN‑ lambda R1 by Western Blot.

Western blot shows lysates of human heart tissue. PVDF Membrane was probed with 2 µg/mL of Human IL-28 Ra/IFN-lambda R1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5260) followed by HRP-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # HAF016). A specific band was detected for IL-28 Ra/IFN-lambda R1 at approximately 55 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 8.

Detection of IL-28 Ra/IFN-? R1 antibody in Daudi Human Cell Line antibody by Flow Cytometry.

Detection of IL‑28 R alpha /IFN‑ lambda R1 in Daudi Human Cell Line by Flow Cytometry.

Daudi human Burkitt's lymphoma cell line was stained with Human IL-28 Ra/IFN-lambda R1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF5260, filled histogram) or isotype control antibody (Catalog # 5-001-A, open histogram), followed by NorthernLights™ 637-conjugated Anti-Sheep IgG Secondary Antibody (Catalog # NL011).

Detection of IL-28 R alpha /IFN-lambda R1 by Western Blot

Detection of IL-28 R alpha /IFN-lambda R1 by Western Blot

Type III IFN response regulates HEV replication.(A) Immunoblots of IFNAR1, IFNLR1 and beta -actin in HepG2 cells transduced with lentiviruses expressing gene-specific shRNA or GFP (Ctrl). (B) ISRE promoter activity in different cells after IFN-alpha or IFN-lambda treatment. HepG2 cells were transfected with an interferon-sensitive response element (ISRE) promoter-driven firefly luciferase reporter plasmid ISRE-Luc and a herpes simplex virus thymidine kinase promoter-driven Renilla luciferase (TK-RLuc) plasmid for 24 h, then treated with IFN-alpha (100ng/ml) or IFN-lambda 1 (220ng/ml) for 24 h. Data are expressed as fold changes relative to non-treated cells based on the relative luciferase activities (firefly luciferase vs. Renilla luciferase). Shown are representative results (mean ± SEM) from two independent experiments each performed in triplicate. (C-E) Effects of IFN receptor knockdown on ISG expression and HEV replication. HepG2 cells transduced with lentiviruses expressing gene-specific shRNA or GFP (Ctrl) were infected with HEV for 5 days. (C) Intracellular IFIT1 mRNA expression determined by qRT-PCR. Results are represented as fold changes relative to HEV-infected control cells. (D) HEV RNA abundance determined by qRT-PCR (fold changes relative to HEV-infected control cells). (E) Cells expressing different shRNA or GFP (Ctrl) were infected with HEV for 5 days, harvested and subjected to three rounds of freeze-thaws prior to inoculation to naïve HepG2 cells. Infected cells were detected by IFA and HEV foci were counted after 5 days. Each data point represents the mean ± SEM of at least 2 independent experiments in duplicate each. * P<0.05; ** P<0.01. Image collected and cropped by CiteAb from the following open publication (https://pubmed.ncbi.nlm.nih.gov/28558073), licensed under a CC-BY license. Not internally tested by R&D Systems.

Applications for Human IL‑28 R alpha /IFN‑ lambda  R1 Antibody

Application
Recommended Usage

CyTOF-ready

Ready to be labeled using established conjugation methods. No BSA or other carrier proteins that could interfere with conjugation.

Flow Cytometry

2.5 µg/106 cells
Sample: Daudi human Burkitt's lymphoma cell line

Western Blot

2 µg/mL
Sample: Human heart tissue

Flow Cytometry Panel Builder

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Advanced Features

  • Spectra Viewer - Custom analysis of spectra from multiple fluorochromes
  • Spillover Popups - Visualize the spectra of individual fluorochromes
  • Antigen Density Selector - Match fluorochrome brightness with antigen density
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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.


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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.

Calculators

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.

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Background: IL-28 R alpha/IFN-lambda R1

IL-28 R alpha (IL-28 receptor alpha subunit; also named interferon-lambda R1) is a type I transmembrane glycoprotein that is the cytokine receptor family 2 member 12
(CRF2-12) (1-4). It pairs with the IL-10 receptor beta subunit (IL-10 R beta, CRF2-4) to form the IL-28 R (1-4). Each subunit of this receptor can interact with the
interferon-like cytokines (type III interferons) IL-28A (IFN-lambda 2), IL-28B (IFN-lambda 3) or IL-29 (IFN-lambda 1) (1-4). Human IL-28 R alpha cDNA encodes a 520 amino acid (aa) protein with a 20 aa signal peptide, a 208 aa extracellular domain (ECD) with a fibronectin type III motif and four potential N-glycosylation sites, a 21 aa transmembrane sequence, and a proline-rich and acidic 271 aa cytoplasmic domain. Eight isoforms have been sequenced, but their significance is unknown (3, 5). Isoforms of 211 and 244 aa appear to lack transmembrane sequences. These and other isoforms of 491, 437, 322, 283 and 184 aa have alternate N- or C-termini, or lack an internal sequence (aa 268-296). The mature human IL-28 R alpha ECD shares 67%, 66%, 78% and 74% aa sequence identity with mouse, rat, canine and bovine IL-28 R alpha, respectively. Some cross-species reactivity has been shown (6). IL-28 R is constitutively expressed in most tissues, but its ligands are mainly produced by antigen presenting cells in response to viruses and their products (2-6). Signaling through IL-28 R alpha is similar to that of receptors for type I IFNs, including tyrosine phosphorylation, activation of JAK tyrosine kinases, STAT phosphorylation and formation of the IFN-stimulated gene factor 3 (ISGF-3) transcription factor complex
(1-7). This signaling pathway induces antiviral activity and up-regulates MHC class I antigen expression (2-7). Anti-proliferative activity has also been shown for
IL-28/IL-28 R (7).

References

  1. Chen, Q. et al. (2006) Vitam. Horm. 74:207.
  2. Meager, A. et al. (2005) Cytokine 31:109.
  3. Sheppard, P. et al. (2003) Nat. Immunol. 4:63.
  4. Kotenko, S.V. et al. (2003) Nat. Immunol. 4:69.
  5. Entrez Accession # NP_775088, EAW95113, EAW95115, EAW95116, AAI39723, AAI01409.
  6. Lasfar, A. et al. (2006) Cancer Res. 66:4468.
  7. Dumoutier, L. et al. (2004) J. Biol. Chem. 279:32269.

Long Name

Interleukin 28 Receptor alpha

Alternate Names

CRF2-12, IFN-lambda R1, IFNLR1, IL-28Ra, IL28R alpha, IL28RA, LICR2

Entrez Gene IDs

163702 (Human); 242700 (Mouse); 362628 (Rat)

Gene Symbol

IFNLR1

UniProt

Additional IL-28 R alpha/IFN-lambda R1 Products

Product Documents for Human IL‑28 R alpha /IFN‑ lambda  R1 Antibody

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Human IL‑28 R alpha /IFN‑ lambda  R1 Antibody

For research use only

Related Research Areas

Citations for Human IL‑28 R alpha /IFN‑ lambda  R1 Antibody

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