Human IL-22 Antibody

(4 citations)   
  • Species Reactivity
    Human
  • Specificity
    Detects human, recombinant mouse, and recombinant rat IL-22 in direct ELISAs and Western blots. In direct ELISAs and Western blots, less than 1% cross-reactivity with recombinant human IL-10 is observed.
  • Source
    Polyclonal Goat IgG
  • Purification
    Antigen Affinity-purified
  • Immunogen
    E. coli-derived recombinant human IL-22
    Ala34-Ile179
    Accession # Q9GZX6
  • Formulation
    Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
  • Endotoxin Level
    <0.10 EU per 1 μg of the antibody by the LAL method.
  • Label
    Unconjugated
Applications
  •  
    Recommended
    Concentration
    Sample
  • Western Blot
    1 µg/mL
    See below
  • Immunocytochemistry
    5-15 µg/mL
    See below
  • Neutralization
    Measured by its ability to neutralize IL‑22-induced IL‑10 secretion in the COLO 205 human colorectal adenocarcinoma cell line [Marehalli, L. et al. (2004) Intl. Immunopharmacol. 4:679]. The Neutralization Dose (ND50) is typically 0.5-2.5 µg/mL in the presence of 1 ng/mL Recombinant Human IL‑22.
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.
Data Examples
Detection of Human IL‑22 by Western Blot. Western blot shows lysates of human tonsil tissue and human breast cancer tissue. PVDF Membrane was probed with 1 µg/mL of Goat Anti-Human IL‑22 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF782) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF019). A specific band was detected for IL‑22 at approximately 32 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
Immunocytochemistry
IL‑22 in Human PBMCs. IL‑22 was detected in immersion fixed human peripheral blood mononuclear cells (PBMCs) treated with lipopolysaccharide (LPS) using 10 µg/mL Goat Anti-Human IL‑22 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF782) for 3 hours at room temperature. Cells were stained with the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). View our protocol for Fluorescent ICC Staining of Non-adherent Cells.
IL‑10 Secretion Induced by IL‑22 and Neutralization by Human IL‑22 Antibody.

Recombinant Human IL‑22 (Catalog # 782-IL) stimulates IL‑10 secretion in the COLO 205 human colorectal adeno­carcinoma cell line in a dose-dependent manner (orange line), as measured by the Human IL‑10 DuoSet ELISA Development Kit (Catalog # DY217B). IL‑10 secretion elicited by Recombinant Human IL‑22 (1 ng/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human IL‑22 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF782). The ND50 is typically 0.5-2.5 µg/mL.

Preparation and Storage
  • Reconstitution
    Reconstitute at 0.2 mg/mL in sterile PBS.
  • Shipping
    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-22

Interleukin-22 (IL-22), also known as IL-10-related T cell-derived inducible factor (IL-TIF) was initially identified as a gene induced by IL-9 in mouse T cells and mast cells. Human IL-22 cDNA encodes a 179 amino acid (aa) residue protein with a putative 33 aa signal peptide that is cleaved to generate a 147 aa mature protein that shares approximately 79% and 22% aa sequence identity with mouse IL-22 and human IL-10, respectively. The human IL-22 gene is localized to chromosome 12q15. Although it exists as a single copy gene in human and in many mouse strains, the mouse IL-22 gene is duplicated in some mouse strains including C57B1/6, FVB and 129. The two mouse genes designated IL-TIF alpha and IL-TIF beta, share greater than 98% sequence homology in their coding region. IL-22 has been shown to activate STAT1 and STAT3 in several hepatoma cell lines and upregulate the production of acute phase proteins. IL-22 is produced by normal T cells upon anti-CD3 stimulation in humans. Mouse IL-22 expression is also induced in various organs upon lipopolysaccharide injection, suggesting that IL-22 may be involved in inflammatory responses. The functional IL-22 receptor complex consists of two receptor subunits, IL-22 R (previously an orphan receptor named CRF2-9) and IL-10 R beta (previously known as CRF2-4), belonging to the class II cytokine receptor family.

  • References:
    1. Dumoutier, L. et al. (2000) J. Immunol. 164:1814.
    2. Xie, M-H. et al. (2000) J. Biol. Chem. 275:31335.
    3. Dumoutier, L. et al. (2000) Proc. Natl. Acad. Sci. USA 97:10144.
    4. Kotenko, S.V. et al. (2001) J. Biol. Chem. 276:2725.
  • Long Name:
    Interleukin 22
  • Entrez Gene IDs:
    50616 (Human); 50929 (Mouse); 500836 (Rat)
  • Alternate Names:
    Cytokine Zcyto18; IL-10-related T-cell-derived inducible factor; IL-21; IL22; IL-22; IL-22IL21; IL-D110; IL-TIF; ILTIFIL-10-related T-cell-derived-inducible factor; IL-TIFMGC79382; interleukin 21; interleukin 22; interleukin-22; MGC79384; TIFa; TIFIL-23; zcyto18
Related Research Areas
Citations:

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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Species
Applications
Sample Type
  1. Interleukin-22 is increased in multiple sclerosis patients and targets astrocytes.
    Authors: Perriard G, Mathias A, Enz L, Canales M, Schluep M, Gentner M, Schaeren-Wiemers N, Du Pasquier R
    J Neuroinflammation, 2015;12(0):119.
    Species: Human
    Sample Type: Whole Cells
    Application: IHC Not Specified
  2. Patients with cystic fibrosis have inducible IL-17+IL-22+ memory cells in lung draining lymph nodes.
    Authors: Chan Y, Chen K, Duncan S, Lathrop K, Latoche J, Logar A, Pociask D, Wahlberg B, Ray P, Ray A, Pilewski J, Kolls J
    J Allergy Clin Immunol, 2013;131(4):1117-29, 1129.
    Species: Human
    Sample Type: Whole Tissue
    Application: IHC OCT-embedded
  3. Persistent Helicobacter pylori Specific Th17 Responses in Patients with Past H. pylori Infection Are Associated with Elevated Gastric Mucosal IL-1β.
    Authors: Serelli-Lee V, Ling KL, Ho C, Yeong LH, Lim GK, Ho B, Wong SB
    PLoS ONE, 2012;7(6):e39199.
    Species: Human
    Sample Type: Whole Tissue
    Application: IHC Frozen
  4. IL-22 increases the innate immunity of tissues.
    Authors: Wolk K, Kunz S, Witte E, Friedrich M, Asadullah K, Sabat R
    Immunity, 2004;21(2):241-54.
    Species: Human
    Sample Type: Whole Cells
    Application: Neut
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