Recombinant Human IL-6, Animal-Free Protein

R&D Systems, part of Bio-Techne | Catalog # AFL206

Intended for preclinical researchers who may transition to GMP IL-6 for their clinical work
R&D Systems, part of Bio-Techne
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AFL206-010
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AFL206-050
AFL206-200
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Key Product Details

Learn more about Animal-Free Recombinant Proteins

Source

E. coli

Accession #

P05231.1

Conjugate

Unconjugated

Applications

Bioactivity

View all IL-6 Proteins and Enzymes »

Product Specifications

Source

E. coli-derived human IL-6 protein
Pro29-Met212
Produced using non-animal reagents in an animal-free laboratory.

Purity

>97%, by SDS-PAGE under reducing conditions and visualized by silver stain.

Endotoxin Level

<0.01 EU per 1 μg of the protein by the LAL method.

N-terminal Sequence Analysis

Pro29

Predicted Molecular Mass

20.9 kDa

Activity

Measured in a cell proliferation assay using T1165.85.2.1 mouse plasmacytoma cells. Nordan, R.P. et al. (1987) J. Immunol. 139:813.
The ED50 for this effect is 0.200‑0.800 ng/mL.
The specific activity of Recombinant Human IL-6 is >1.00 x 108 IU/mg, which is calibrated against the human IL‑6 WHO International Standard (NIBSC code: 89/548).

Scientific Data Images for Recombinant Human IL-6, Animal-Free Protein

Equivalent Bioactivity of GMP, Animal-Free, and RUO grades of Recombinant Human IL-6

Equivalent bioactivity of GMP (206-GMP), Animal-Free (Catalog # AFL206), and RUO (206-IL/CF) grades of Recombinant Human IL-6 as measured in cell proliferation assay (orange, green, red, respectively).

Formulation, Preparation and Storage

AFL206
Formulation Lyophilized from a 0.2 μm filtered solution in PBS and NaCl.
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.
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.

Background: IL-6

Interleukin-6 (IL-6) is a pleiotropic, alpha-helical, 22-28 kDa phosphorylated and variably glycosylated cytokine that plays important roles in the acute phase reaction, inflammation, hematopoiesis, bone metabolism, and cancer progression (1-5). Mature human IL-6 is 183 amino acids (aa) in length and shares 39% aa sequence identity with mouse and rat IL-6 (6). Alternative splicing generates several isoforms with internal deletions, some of which exhibit antagonistic properties (7-10). IL-6 induces signaling through a cell surface heterodimeric receptor complex composed of a ligand binding subunit (IL-6 R alpha) and a signal transducing subunit (gp130). IL-6 binds to IL-6 R alpha, triggering IL-6 R alpha association with gp130 and gp130 dimerization (11). gp130 is also a component of the receptors for CLC, CNTF, CT-1, IL-11, IL-27, LIF, and OSM (12). Soluble forms of IL-6 R alpha are generated by both alternative splicing and proteolytic cleavage (5). In a mechanism known as trans-signaling, complexes of soluble IL-6 and IL-6 R alpha elicit responses from gp130-expressing cells that lack cell surface IL-6 R alpha (5). Trans-signaling enables a wider range of cell types to respond to IL-6, as the expression of gp130 is ubiquitous, while that of IL-6 R alpha is predominantly restricted to hepatocytes, monocytes, and resting lymphocytes (2, 5). Soluble splice forms of gp130 block trans-signaling from IL-6/IL-6 R alpha but not from other cytokines that use gp130 as a co-receptor (5, 13). IL-6, along with TNF-alpha and IL-1, drives the acute inflammatory response and the transition from acute inflammation to either acquired immunity or chronic inflammatory disease (1-5). When dysregulated, it contributes to chronic inflammation in obesity, insulin resistance, inflammatory bowel disease, arthritis, sepsis, and atherosclerosis (1, 2, 5). IL-6 can also function as an anti-inflammatory molecule, as in skeletal muscle where it is secreted in response to exercise (2). In addition, it enhances hematopoietic stem cell proliferation and the differentiation of Th17 cells, memory B cells, and plasma cells (1, 14).

References

  1. Mansell, A. and B.J. Jenkins (2013) Cytokine Growth Factor Rev. 24:249.
  2. Schuett, H. et al. (2009) Thromb. Haemost. 102:215.
  3. Erta, M. et al. (2012) Int. J. Biol. Sci. 8:1254.
  4. Garbers, C. et al. (2012) Cytokine Growth Factor Rev. 23:85.
  5. Mihara, M. et al. (2012) Clin. Sci. (Lond.) 122:143.
  6. Hirano, T. et al. (1986) Nature 324:73.
  7. Kestler, D.P. et al. (1995) Blood 86:4559.
  8. Kestler, D.P. et al. (1999) Am. J. Hematol. 61:169.
  9. Bihl, M.P. et al. (2002) Am. J. Respir. Cell Mol. Biol. 27:48.
  10. Alberti, L. et al. (2005) Cancer Res. 65:2.
  11. Murakami, M. et al. (1993) Science 260:1808.
  12. Muller-Newen, G. (2003) Sci. STKE 2003:PE40.
  13. Mitsuyama, K. et al. (2006) Clin. Exp. Immunol. 143:125.
  14. Cerutti, A. et al. (1998) J. Immunol. 160:2145.

Long Name

Interleukin 6

Alternate Names

BSF-2, BSF2, IFNB2, IL6, MGI-2A

Entrez Gene IDs

3569 (Human); 16193 (Mouse); 24498 (Rat); 399500 (Porcine); 280826 (Bovine); 403985 (Canine); 102138971 (Cynomolgus Monkey); 100034196 (Equine); 493687 (Feline); 463288 (Primate); 100008733 (Rabbit)

Gene Symbol

IL6

UniProt

P05231.1 (Human)

Additional IL-6 Products

Product Documents for Recombinant Human IL-6, Animal-Free Protein

Product Datasheets

Certificate of Analysis

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Note: Certificate of Analysis not available for kit components.

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Manufacturing Specifications

Animal-Free Manufacturing Conditions
Our dedicated controlled-access animal-free laboratories ensure that at no point in production are the products exposed to potential contamination by animal components or byproducts. Every stage of manufacturing is conducted in compliance with R&D Systems' stringent Standard Operating Procedures (SOPs). Production and purification procedures use equipment and media that are confirmed animal-free.  

 Production

  • All molecular biology procedures use animal-free media and dedicated labware.
  • Dedicated fermentors are utilized in committed animal-free areas.

Purification

  • Protein purification columns are animal-free.
  • Bulk proteins are filtered using animal-free filters.
  • Purified proteins are stored in animal-free containers in a dedicated cold storage room.

    Quality Assurance

    • Low Endotoxin Level.
    • No impairment of biological activity.
    • High quality product obtained under stringent conditions.
    • For ex vivo research or bioproduction, additional documentation can be provided.

    Please read our complete Animal-Free Statement

    Product Specific Notices for Recombinant Human IL-6, Animal-Free Protein

    For research use or further manufacturing only

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