Overview

  • Product name
  • Description
    Rabbit polyclonal to IL21
  • Tested applications
    Suitable for: ICC/IF, IHC-P, WBmore details
  • Species reactivity
    Reacts with: Mouse, Human
    Predicted to work with: Rat, Cow, Dog, Pig
  • Immunogen

    Synthetic peptide:

    TCPSCDSYEKKPPKE

    , corresponding to amino acids 121-135 of Human IL-21.

  • Positive control
  • General notes
    Stable for one year.


    A novel cytokine was recently identified in human and mouse and designated IL-21, which has significant homology to IL-2, IL-4, and IL-15. The receptor for IL-21 (IL-21R, also termed NILR for novel Interleukin receptor) is a new member of the class I cytokine receptor family. IL-21R forms a complex with the common cytokine receptor g chain, gc, and mediates IL-21 signaling. IL-21 and its receptor activate JAK-STAT signaling pathway. IL-21 is expressed in activated T cells, and HL-60 and THP-1 cell lines. IL-21 plays a role in the proliferation and maturation of NK, B and T cell populations.

Properties

  • Form
    Liquid
  • Storage instructions
    Shipped at 4°C. Store at +4°C.
  • Storage buffer
    Preservative: 0.02% Sodium azide
  • Concentration information loading...
  • Purity
    Immunogen affinity purified
  • Primary antibody notes
    A novel cytokine was recently identified in human and mouse and designated IL-21, which has significant homology to IL-2, IL-4, and IL-15. The receptor for IL-21 (IL-21R, also termed NILR for novel Interleukin receptor) is a new member of the class I cytokine receptor family. IL-21R forms a complex with the common cytokine receptor g chain, gc, and mediates IL-21 signaling. IL-21 and its receptor activate JAK-STAT signaling pathway. IL-21 is expressed in activated T cells, and HL-60 and THP-1 cell lines. IL-21 plays a role in the proliferation and maturation of NK, B and T cell populations.
  • Clonality
    Polyclonal
  • Isotype
    IgG
  • Research areas

Applications

Our Abpromise guarantee covers the use of ab5978 in the following tested applications.

The application notes include recommended starting dilutions; optimal dilutions/concentrations should be determined by the end user.

Application Abreviews Notes
ICC/IF Use a concentration of 2 µg/ml.
IHC-P Use at an assay dependent concentration.
WB Use a concentration of 0.5 - 1 µg/ml. Detects a band of approximately 18 kDa.Can be blocked with IL21 peptide (ab6680).

Target

  • Function
    Cytokine with immunoregulatory activity. May promote the transition between innate and adaptive immunity. Induces the production of IgG(1) and IgG(3) in B-cells (By similarity). May play a role in proliferation and maturation of natural killer (NK) cells in synergy with IL15. May regulate proliferation of mature B- and T-cells in response to activating stimuli. In synergy with IL15 and IL18 stimulates interferon gamma production in T-cells and NK cells. During T-cell mediated immune response may inhibit dendritic cells (DC) activation and maturation.
  • Tissue specificity
    Expressed in activated CD4-positive T-cells but not in CD8-positive T-cells, B-cells, or monocytes.
  • Sequence similarities
    Belongs to the IL-15/IL-21 family.
  • Cellular localization
    Secreted.
  • Information by UniProt
  • Database links
  • Alternative names
    • CVID11 antibody
    • IL 21 antibody
    • IL-21 antibody
    • Il21 antibody
    • IL21_HUMAN antibody
    • Interleukin 21 antibody
    • Interleukin-21 antibody
    • interleukin-21 isoform antibody
    • Interleukin21 antibody
    • OTTHUMP00000164088 antibody
    • Za11 antibody
    see all

Images

  • ab5978 staining IL21 in mouse skin tissue sections by Immunohistochemistry (IHC-P - paraformaldehyde-fixed, paraffin-embedded sections). Tissue was fixed with formaldehyde and blocked with 10% serum for 30 minutes at room temperature; antigen retrieval was by heat mediation in a citrate buffer. Samples were incubated with primary antibody (1/8000 in 10% normal goat serum) for 10 hours. A Biotin-conjugated goat anti-rabbit IgG polyclonal (1/350) was used as the secondary antibody.

    See Abreview

  • Western blot analysis of IL-21 expression in HL-60 cell lysate in the absence (lane A) or presence of blocking peptide (lane B) with ab5978 at 1 µg /ml. Western blot analysis of IL-21 expression in HL-60 cell lysate in the absence (lane A) or presence of blocking peptide (lane B) with ab5978 at 1 µg /ml.

  • Developed using the ECL technique

    Performed under reducing conditions.
  • ab5978 at 2ug/ml staining of IL21 in K562 cells.

References

This product has been referenced in:
  • Tan L  et al. Chitosan nanoparticle-based delivery of fused NKG2D-IL-21 gene suppresses colon cancer growth in mice. Int J Nanomedicine 12:3095-3107 (2017). WB . Read more (PubMed: 28450784) »

See 1 Publication for this product

Customer reviews and Q&As

Application
Immunohistochemistry (Formalin/PFA-fixed paraffin-embedded sections)
Blocking step
Serum as blocking agent for 30 minute(s) · Concentration: 10% · Temperature: RT°C
Antigen retrieval step
Heat mediated - Buffer/Enzyme Used: Citrate buffer
Sample
Mouse Tissue sections (skin)
Specification
skin
Permeabilization
No
Fixative
Formaldehyde
Username

Ms. Hongyan Zhao

Verified customer

Submitted Feb 25 2014

Abcam guarantees this product to work in the species/application used in this Abreview.
Application
Western blot
Sample
Human Cell lysate - whole cell (293T)
Loading amount
60 µg
Specification
293T
Treatment
transfection of plasmid expressing IL21
Gel Running Conditions
Reduced Denaturing (12)
Blocking step
Milk as blocking agent for 2 hour(s) and 0 minute(s) · Concentration: 5% · Temperature: 21°C
Username

Abcam user community

Verified customer

Submitted Sep 10 2012

Please note: All products are "FOR RESEARCH USE ONLY AND ARE NOT INTENDED FOR DIAGNOSTIC OR THERAPEUTIC USE"

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