IL-5 Antibody (9906) [Phycoerythrin]

Resting (panel A) and PMA/ionomycin-activated (panel B) human peripheral blood mononuclear cells were stained with Mouse Anti-Human IL-5 PE-conjugated Monoclonal Antibody (Catalog # IC605P) and Mouse Anti-Human CD3e APC-conjugated Monoclonal Antibody (Catalog # FAB100A). Quadrant markers were set based on control antibody staining (Catalog # IC002P). To facilitate intracellular staining, cells were fixed with Flow Cytometry Fixation Buffer (Catalog # FC004) and permeabilized with Flow Cytometry Permeabilization/Wash Buffer I (Catalog # FC005). View our protocol for Staining Intracellular Molecules.

Product Discontinued

IL-5 Antibody (9906) [Phycoerythrin] Summary

• Immunogen: S. frugiperda insect ovarian cell line Sf 21-derived recombinant human IL‑5
  Ile20-Ser134
  Accession # P05113
• Specificity: Detects human IL-5 in direct ELISAs and Western blots. In direct ELISAs and Western blots, no cross-reactivity with recombinant mouse IL‑5 is observed.
• Source: N/A
• Isotype: IgG1
• Clonality: Monoclonal
• Host: Mouse
• Gene: IL5
• Purity Statement: Protein A or G purified from ascites

Applications/Dilutions

• Dilutions:
  • Intracellular Staining by Flow Cytometry 0.5 uL/10^6 cells

Packaging, Storage & Formulations

• Storage: Store the unopened product at 2 - 8° C. Do not use past expiration date. Protect from light.
• Buffer: Supplied in a saline solution containing BSA and Sodium Azide.
• Preservative: Sodium Azide

Notes

This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.

Alternate Names for IL-5 Antibody (9906) [Phycoerythrin]

• BCDF mu
• B-cell differentiation factor I
• BCGFII
• EDF
• Eo-CSF
• Eosinophil differentiation factor
• IL5
• IL-5
• IL-5T-cell replacing factor
• interleukin 5 (colony-stimulating factor, eosinophil)
• interleukin-5
• TRF
• TRFB cell differentiation factor I

Background

Interleukin-5 (IL-5) is a 20-21 kDa secreted glycoprotein that belongs to the alpha -helical group of cytokines (1-3). Unlike other family members, it is present as a covalently linked antiparallel dimer (4, 5). The cDNA for human IL-5 encodes a signal peptide and a 115 amino acid (aa) mature protein that contains both N- and O-linked carbohydrate. Mature human IL-5 shares 70%, 70%, 62%, 71%, 70% and 66%, aa sequence identity with mouse, rat, canine, equine, feline and porcine IL-5, respectively. IL-5 is primarily produced by CD4+ Th2 cells, but also by activated eosinophils, mast cells, EBV-transformed B cells, group 2 ILCs, macrophages, and IL‑2‑stimulated invariant natural killer T cells (iNKT) (1, 3, 6-9). IL-5 increases production and mobilization of eosinophils and CD34+ progenitors from the bone marrow and causes maturation of eosinophil precursors outside the bone marrow (1, 6, 10). The receptor for human IL-5, mainly expressed by eosinophils, but also found on basophils and mast cells, consists of a unique ligand-binding subunit (IL-5 R alpha ) and a shared signal‑transducing subunit, beta c (3, 6, 11). IL-5 R alpha first binds IL-5 at low affinity, then associates with preformed beta c dimers, forming a high-affinity receptor (12). IL-5 also binds proteoglycans, potentially enhancing its activity (13). Soluble forms of IL-5 R alpha   antagonize IL-5 and can be found in vivo (10, 14). In humans, IL-5 primarily affects cells of the eosinophilic lineage, and promotes their differentiation, maturation, activation, migration and survival, while in mice IL-5 also enhances Ig class switching and release from B1 cells (1 ‑ 3, 9, 10, 15, 16). IL-5 also promotes differentiation of basophils and primes them for histamine and leukotriene release (17).

1. Rosenberg, H. F. et al. (2007) J. Allergy Clin. Immunol. 119:1303.
2. Takatsu, K. (2014) Front. Immunol. 5:369.
3. Martinez-Moczygemba, M. and D. P. Huston (2003) J. Allergy Clin. Immunol. 112:653.
4. Minamitake, Y. et al. (1990) J. Biochem. 107:292.
5. McKenzie, A. N. et al. (1991) Mol. Immunol. 28:155.
6. Shakoory, B. et al. (2004) J. Interferon Cytokine Res. 24:271.
7. Hazenberg, M.D.  and H. Spits (2014) Blood 124:700.
8. Sakuishi, K. et al. (2007) J. Immunol. 179:3452.
9. Li, X. et al. (2016) Biochem. Biophys. Res. Commun. 473:939.
10. Cameron, L. et al. (2000) J. Immunol. 164:1538.
11. Broughton, S.E. et al. (2015) Cytokine 74:247.
12. Zaks-Zilberman, M. et al. (2008) J. Biol. Chem. 283:13398.
13. Lipscombe, R. et al. (1998) J. Leukocyte Biol. 63:342.
14. Tavernier, J. et al. (2000) Blood 95:1600.
15. Kopf, M. et al. (1996) Immunity 4:15.
16. Horikawa, K. and K. Takatsu (2006) Immunology 118:497.
17. Denburg, J. A. et al. (1991) Blood 77:1462.

Limitations

This product is for research use only and is not approved for use in humans or in clinical diagnosis. Primary Antibodies are guaranteed for 1 year from date of receipt.

Publications for IL-5 Antibody (IC605P)(2)

Publications using IC605P

• Mamessier E, Nieves A, Lorec AM, Dupuy P, Pinot D, Pinet C, Vervloet D, Magnan A T-cell activation during exacerbations: a longitudinal study in refractory asthma. Allergy, 2008-09-01;63(9):1202-10. 2008-09-01 [PMID: 18699937] (Flow Cytometry, Human)
• Alisa A, Boswell S, Pathan AA, Ayaru L, Williams R, Behboudi S Human CD4(+) T cells recognize an epitope within alpha-fetoprotein sequence and develop into TGF-beta-producing CD4(+) T cells. J. Immunol., 2008-04-01;180(7):5109-17. 2008-04-01 [PMID: 18354237] (Flow Cytometry, Human)

Bioinformatics

• Gene Symbol: IL5
• Uniprot:
  • P05113()