Recombinant Human IL-9 Protein

Newer Version Available: 209-ILB
Formulations:

Discontinued Product

209-IL has been discontinued and is replaced by 209-ILB.

Product Details
Citations (9)
FAQs
Reviews

Recombinant Human IL-9 Protein Summary

Purity
>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.
Endotoxin Level
<0.10 EU per 1 μg of the protein by the LAL method.
Activity
Measured in a cell proliferation assay using MO7e human megakaryocytic leukemic cells. Avanzi, G. et al. (1988) Br. J. Haematol. 69:359. The ED50 for this effect is 0.1‑0.6 ng/mL.
Source
Spodoptera frugiperda, Sf 21 (baculovirus)-derived human IL-9 protein
Gln19-Ile144
Accession #
N-terminal Sequence
Analysis
No results obtained; Gln19 predicted
Predicted Molecular Mass
14.1 kDa
SDS-PAGE
Multiple bands between 16-25 kDa, reducing conditions

Product Datasheets

209-IL

Formulation Lyophilized from a 0.2 μm filtered solution in PBS with BSA as a carrier protein.
Reconstitution Reconstitute at 100 μg/mL in sterile PBS containing at least 0.1% human or bovine serum albumin.
Shipping The product is shipped at ambient temperature. Upon receipt, store it 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.
  • 3 months, -20 to -70 °C under sterile conditions after reconstitution.
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Background: IL-9

Interleukin-9 (IL-9), also known as P40 and MEA (mast cell growth-enhancing activity), is a 30-40 kDa glycosylated member of a cytokine family that includes Interleukins-2, -4, -7, -15, and -21. These proteins utilize heteromeric receptors containing the Common gamma chain ( gamma c) in addition to ligand-specific subunits. IL-9 interacts selectively with IL-9 R which then associates with gamma c to form the functional receptor complex. IL-9 contributes to allergic inflammation, autoimmunity-induced inflammation, parasite clearance from the GI tract, and Treg-mediated immune suppression (1, 2). It enhances the expansion and recruitment of mast cells and eosinophils as well as the production of IgE and Th2 cytokines (3‑6). It is required for anaphylactic responses to ingested allergens but not to systemic allergens (7). IL-9 plays multiple roles in the development and function of subsets within the CD4+ T cell lineage (8). It is expressed by activated Th9, Th17, Treg, and Th2 cells (3, 9‑12). IL-9 acts as an autocrine growth and activation factor for Th17, Treg, and mast cells (3, 11, 13). It also can inhibit immune responses by enhancing the suppressive properties of Treg and by recruiting immune-suppressive mast cells to sites of inflammation (11, 12). Mature human IL-9 shares 57% amino acid sequence identity with mouse and rat IL-9 (14, 15).

References
  1. Noelle, R.J. and E.C. Nowak (2010) Nat. Rev. Immunol. 10:683.
  2. Goswami, R. and M.H. Kaplan (2011) J. Immunol. 186:3283.
  3. Nowak, E.C. et al. (2009) J. Exp. Med. 206:1653.
  4. Townsend, M.J. et al. (2000) Immunity 13:573.
  5. Leech, M.D. and R.K. Grencis (2006) J. Immunol. 176:2505.
  6. Fawaz, L.M. et al. (2007) J. Allergy Clin. Immunol. 120:1208.
  7. Osterfeld, H. et al. (2010) J. Allergy Clin. Immunol. 125:469.
  8. Jabeen, R. and M.H. Kaplan (2012) Curr. Opin. Immunol. 24:303.
  9. Tan, C. et al. (2010) J. Immunol. 185:6795.
  10. Jager, A. et al. (2009) J. Immunol. 183:7169.
  11. Elyaman, W. et al. (2009) Proc. Natl. Acad. Sci. USA 106:12885.
  12. Lu, L.-F. et al. (2006) Nature 442:997.
  13. Stassen, M. et al. (2000) J. Immunol. 164:5549.
  14. Yang, Y.-C. et al. (1989) Blood 74:1880.
  15. Renauld, J.-C. et al. (1990) Cytokine 2:9.
Long Name
Interleukin 9
Entrez Gene IDs
3578 (Human); 16198 (Mouse)
Alternate Names
Cytokine P40; HP40; IL9; IL-9; IL-9homolog of mouse T cell and mast cell growth factor 40; interleukin 9; interleukin-9; p40 cytokine; p40 T-cell and mast cell growth factor; P40; T-cell growth factor P40

Citations for Recombinant Human IL-9 Protein

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.

9 Citations: Showing 1 - 9
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  1. Expression and role of interleukin-9 in Vogt-Koyanagi-Harada disease
    Authors: Z Peng, S Jiang, M Wu, X Zhou, Q Wang
    Mol. Vis., 2017;23(0):538-547.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  2. Ref-1/APE1 as Transcriptional Regulator and Novel Therapeutic Target in Pediatric T-cell Leukemia
    Authors: J Ding, ML Fishel, AM Reed, E McAdams, M Czader, AA Cardoso, MR Kelley
    Mol. Cancer Ther., 2017;0(0):.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  3. IL-9 regulates allergen-specific Th1 responses in allergic contact dermatitis.
    Authors: Liu J, Harberts E, Tammaro A, Girardi N, Filler R, Fishelevich R, Temann A, Licona-Limon P, Girardi M, Flavell R, Gaspari A
    J Invest Dermatol, 2014;134(7):1903-11.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  4. Pentraxin 3 (PTX3) expression in allergic asthmatic airways: role in airway smooth muscle migration and chemokine production.
    Authors: Zhang J, Shan L, Koussih L, Redhu NS, Halayko AJ, Chakir J, Gounni AS
    PLoS ONE, 2012;7(4):e34965.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  5. Cytotoxicity of CD56(bright) NK cells towards autologous activated CD4+ T cells is mediated through NKG2D, LFA-1 and TRAIL and dampened via CD94/NKG2A.
    Authors: Nielsen N, Odum N, Urso B, Lanier LL, Spee P
    PLoS ONE, 2012;7(2):e31959.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  6. Autocrine release of interleukin-9 promotes Jak3-dependent survival of ALK+ anaplastic large-cell lymphoma cells.
    Authors: Qiu L, Lai R, Lin Q, Lau E, Thomazy DM, Calame D, Ford RJ, Kwak LW, Kirken RA, Amin HM
    Blood, 2006;108(7):2407-15.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  7. Protection of human conjunctival fibroblasts from NO-induced apoptosis by interleukin-4 or interleukin-13.
    Authors: Fujitsu Y, Fukuda K, Kimura K, Seki K, Kumagai N, Nishida T
    Invest. Ophthalmol. Vis. Sci., 2005;46(3):797-802.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  8. IL-17 markedly up-regulates beta-defensin-2 expression in human airway epithelium via JAK and NF-kappaB signaling pathways.
    Authors: Kao CY, Chen Y, Thai P, Wachi S, Huang F, Kim C, Harper RW, Wu R
    J. Immunol., 2004;173(5):3482-91.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay
  9. Interleukin-9 induces goblet cell hyperplasia during repair of human airway epithelia.
    Authors: Vermeer PD, Harson R, Einwalter LA, Moninger T
    Am. J. Respir. Cell Mol. Biol., 2003;28(3):286-95.
    Species: Human
    Sample Types: Whole Cells
    Applications: Bioassay

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