Recombinant Human IL-17A (Human Cell-expressed) Protein, CF Summary
Details of Functionality |
Measured by its ability to induce CXCL1/GRO alpha secretion in HT‑29 human colon adenocarcinoma cells. The ED50 for this effect is 0.12-1.2 ng/mL. Measured by its ability to induce IL-6 secretion by NIH‑3T3 mouse embryonic fibroblast cells. Yao, Z. et al. (1995) Immunity 3:811. The ED50 for this effect is 1.5-7.5 ng/mL. |
Source |
Human embryonic kidney cell, HEK293-derived human IL-17/IL-17A protein Gly24-Ala155 |
Accession # |
|
N-terminal Sequence |
Gly24 |
Structure / Form |
Disulfide-linked homodimer |
Protein/Peptide Type |
Recombinant Proteins |
Gene |
IL17A |
Purity |
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining. |
Endotoxin Note |
<0.01 EU per 1 μg of the protein by the LAL method. |
Applications/Dilutions
Dilutions |
|
Theoretical MW |
15.1 kDa (monomer). Disclaimer note: The observed molecular weight of the protein may vary from the listed predicted molecular weight due to post translational modifications, post translation cleavages, relative charges, and other experimental factors. |
SDS-PAGE |
15-23 kDa, reducing conditions 28-38 kDa, non-reducing conditions |
Publications |
Read Publications using 7955-IL/CF in the following applications:
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Packaging, Storage & Formulations
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.
|
Buffer |
Lyophilized from a 0.2 μm filtered solution in PBS. |
Purity |
>95%, by SDS-PAGE visualized with Silver Staining and quantitative densitometry by Coomassie® Blue Staining. |
Reconstitution Instructions |
Reconstitute at 100 μg/mL in PBS. |
Notes
This product is produced by and ships from R&D Systems, Inc., a Bio-Techne brand.
Alternate Names for Recombinant Human IL-17A (Human Cell-expressed) Protein, CF
Background
Interleukin‑17A (IL‑17A), also known as CTLA‑8, is a 15‑20 kDa glycosylated cytokine that plays an important role in anti‑microbial and chronic inflammation. The six IL‑17 cytokines (IL‑17A‑F) are encoded by separate genes but adopt a conserved cystine knot fold (1, 2). Mature human IL‑17A shares 60% amino acid sequence identity with mouse and rat IL‑17A (3, 4). IL‑17A is secreted by Th17 cells, gamma /δ T cells, iNKT cells, NK cells, LTi cells, neutrophils, and intestinal Paneth cells (2). It forms disulfide‑linked homodimers as well as disulfide‑linked heterodimers with IL‑17F (5, 6). IL‑17A exerts its effects through the transmembrane IL‑17 RA in complex with IL‑17 RC or IL‑17 RD (7, 8). Both IL‑17 RA and IL‑17 RC are required for responsiveness to heterodimeric IL‑17A/F (7). IL‑17A promotes protective mucosal and epidermal inflammation in response to microbial infection (9‑12). It induces chemokine production, neutrophil influx, and the production of antibacterial peptides (9‑11). IL‑17A/F likewise induces neutrophil migration, but IL‑17F does not (11). IL‑17A additionally enhances the production of inflammatory mediators by rheumatoid synovial fibroblasts and contributes to TNF‑ alpha induced shock (4, 13). In contrast, it can protect against the progression of colitis by limiting chronic inflammation (12). IL‑17A encourages the formation of autoreactive germinal centers and exacerbates the onset and progression of experimental models of autoimmunity (14, 15). IL‑17A has been shown to exert either tumorigenic or anti‑tumor effects (16, 17).
- Gaffen, S.L. (2009) Nat. Rev. Immunol. 9:556.
- Cua, D.J. and C.M. Tato (2010) Nat. Rev. Immunol. 10:479.
- Yao, Z. et al. (1995) J. Immunol. 155:5483.
- Fossiez, F. et al. (1996) J. Exp. Med. 183:2593.
- Chang, S.H. and C. Dong (2007) Cell Res. 17:435.
- Wright, J.F. et al. (2007) J. Biol. Chem. 282:13447.
- Wright, J.F. et al. (2008) J. Immunol. 181:2799.
- Rong, Z. et al. (2009) Cell Res. 19:208.
- Cho, J.S. et al. (2010) J. Clin. Invest. 120:1762.
- Liang, S.C. et al. (2006) J. Exp. Med. 203:2271.
- Liang, S.C. et al. (2007) J. Immunol. 179:7791.
- O’Connor Jr., W. et al. (2009) Nat. Immunol. 10:603.
- Takahashi, N. et al. (2008) J. Exp. Med. 205:1755.
- Hsu, H. et al. (2008) Nat. Immunol. 9:166.
- Rohn, T.A. et al. (2006) Eur. J. Immunol. 36:2857.
- Wang, L. et al. (2009) J. Exp. Med. 206:1457.
- Kryczek, I. et al. (2009) Blood 114:357.
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