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Recombinant Human IL-6, Animal-Free Protein

Catalog #: AFL206
2 Citations Datasheet / COA / SDS
GMP Version Available: 206-GMP
GMP
Intended for preclinical researchers who may transition to GMP IL-6 for their clinical work
Catalog # Availability Size / Price Qty
AFL206-01M
AFL206-200
AFL206-010
AFL206-050

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Equivalent Bioactivity of GMP, Animal-Free, and RUO grades of Recombinant Human IL-6
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Citations (2)
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Summary Product Datasheets Carrier Free Data Images Reconstitution Calculator Background Related Research Areas

Recombinant Human IL-6, Animal-Free Protein Summary

Animal Free Proteins
Animal-free proteins are particularly important for researchers concerned with experimental variables caused by trace animal components or mammalian pathogens. Our products generated under animal-free conditions share the same biological activities as those produced using our standard laboratory techniques.

Product Specifications

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.
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).
Source
E. coli-derived human IL-6 protein
Pro29-Met212
Produced using non-animal reagents in an animal-free laboratory.
Accession #
P05231.1
N-terminal Sequence
Analysis
Pro29
Predicted Molecular Mass
20.9 kDa

Product Datasheets

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AFL206

Product Datasheet
COA
SDS

Carrier Free

What does CF mean?

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein to be stored at a more dilute concentration. The carrier free version does not contain BSA.

What formulation is right for me?

In general, we advise purchasing the recombinant protein with BSA for use in cell or tissue culture, or as an ELISA standard. In contrast, the carrier free protein is recommended for applications, in which the presence of BSA could interfere.

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.

Animal Free Proteins
Animal-free proteins are particularly important for researchers concerned with experimental variables caused by trace animal components or mammalian pathogens. Our products generated under animal-free conditions share the same biological activities as those produced using our standard laboratory techniques.

Scientific Data

Bioactivity View Larger

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).

Reconstitution Calculator

Reconstitution Calculator

The reconstitution calculator allows you to quickly calculate the volume of a reagent to reconstitute your vial. Simply enter the mass of reagent and the target concentration and the calculator will determine the rest.

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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
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)
Alternate Names
B-cell differentiation factor; B-cell stimulatory factor 2; BSF2; BSF-2; CDF; CTL differentiation factor ; HSF; hybridoma growth factor; IFNB2; IFN-beta-2; IL6; IL-6; Interferon beta-2; interleukin 6 (interferon, beta 2); interleukin BSF-2; interleukin-6; MGI-2A

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

    Citations for Recombinant Human IL-6, Animal-Free 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.

    2 Citations: Showing 1 - 2
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    1. IL-15 promotes activation and expansion of CD8+ T cells in HIV-1 infection
      Authors: Souheil-Antoine Younes
      J Clin Invest, 2016-06-20;126(7):2745-2756.
      Species: Human
      Sample Types: Whole Cells
      Applications: Bioassay
    2. Generation of induced pluripotent stem cells from CD34+ cells across blood drawn from multiple donors with non-integrating episomal vectors.
      Authors: Mack AA, Kroboth S, Rajesh D
      PLoS ONE, 2011-11-22;6(11):e27956.
      Species: Human
      Sample Types: Whole Cells
      Applications: Bioassay

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