Detects rat and mouse IL-6 in direct ELISAs and Western blots. In direct ELISAs, approximately 10% cross-reactivity with recombinant cotton rat IL‑6 is observed, and less than 1% cross-reactivity with recombinant human IL-6 is observed.
Polyclonal Goat IgG
E. coli-derived recombinant rat IL-6 Phe25-Thr211 Accession # P20607
Lyophilized from a 0.2 μm filtered solution in PBS with Trehalose. *Small pack size (SP) is supplied as a 0.2 µm filtered solution in PBS.
<0.10 EU per 1 μg of the antibody by the LAL method.
Measured by its ability to neutralize IL‑6-induced proliferation in the T1220.127.116.11 mouse plasmacytoma cell line. Nordan, R.P. and M. Potter (1986) Science 233:566. The Neutralization Dose (ND50) is typically 0.1-0.5 µg/mL in the presence of 0.6 ng/mL Recombinant Rat IL‑6.
Please Note: Optimal dilutions should be determined by each laboratory for each application. General Protocols are available in the Technical Information section on our website.
Detection of Rat IL‑6 by Western Blot. Western blot shows lysates of NR8383 rat alveolar macrophage cell line untreated (-) or treated (+) with LPS. PVDF membrane was probed with 1 µg/mL of Goat Anti-Rat IL‑6 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF506) followed by HRP-conjugated Anti-Goat IgG Secondary Antibody (Catalog # HAF017). A specific band was detected for IL‑6 at approximately 22 kDa (as indicated). This experiment was conducted under reducing conditions and using Immunoblot Buffer Group 1.
IL‑6 in Mouse T Cells. IL‑6 was detected in immersion fixed activated mouse T Cells using 15 µg/mL Rat IL‑6 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF506) for 3 hours at room temperature. Cells were stained (red) and counterstained (green). View our protocol for Fluorescent ICC Staining of Non-adherent Cells.
Cell Proliferation Induced by IL‑6 and Neutralization by Rat IL‑6 Antibody. Recombinant Rat IL‑6 (Catalog # 506-RL) stimulates proliferation in the T118.104.22.168 mouse plasmacytoma cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Rat IL‑6 (0.6 ng/mL) is neutralized (green line) by increasing concentrations of Rat IL‑6 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF506). The ND50 is typically 0.1-0.5 µg/mL.
Preparation and Storage
Reconstitute at 0.2 mg/mL in sterile PBS.
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below. *Small pack size (SP) is shipped with polar packs. Upon receipt, store it immediately at -20 to -70 °C
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.
6 months, -20 to -70 °C under sterile conditions after reconstitution.
Interleukin 6 (IL-6) is a pleiotropic alpha -helical cytokine that plays important roles in acute phase reactions, inflammation, hematopoiesis, bone metabolism, and cancer progression. IL-6 activity is central to the transition from acute inflammation to either acquired immunity or chronic inflammatory disease. It is secreted by multiple cell types as a 22-28 kDa phosphorylated and variably glycosylated molecule (1-4). Mature rat IL-6 is 187 amino acids (aa) in length and shares 41% and 85% aa sequence identity with human and mouse IL-6, respectively (5). IL-6 induces signaling through a cell surface heterodimeric receptor complex composed of a ligand binding subunit (IL-6 R) and a signal transducing subunit (gp130). IL-6 binds to IL-6 R, triggering IL-6 R association with gp130 and gp130 dimerization (6). gp130 is also a component of the receptors for CLC, CNTF, CT-1, IL-11, IL-27, LIF, and OSM (7). Soluble forms of IL-6 R are generated by both alternate splicing and proteolytic cleavage (3). In a mechanism known as trans-signaling, complexes of soluble IL-6 and IL-6 R elicit responses from gp130-expressing cells that lack cell surface IL‑6 R (3). 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 is predominantly restricted to hepatocytes, leukocytes, and lymphocytes (3). Soluble splice forms of gp130 block trans-signaling from IL-6/IL-6 R but not from other cytokines that utilize gp130 as a coreceptor (4, 8).
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Hodge, D.R. et al. (2005) Eur. J. Cancer 41:2502.
Jones, S.A. (2005) J. Immunol. 175:3468.
Rose-John, S. et al. (2006) J. Leukoc. Biol. 80:227.
Northemann, W. et al. (1989) J. Biol. Chem. 264:16072.
Murakami, M. et al. (1993) Science 260:1808.
Muller-Newen, G. (2003) Sci. STKE 2003:PE40.
Mitsuyama, K. et al. (2006) Clin. Exp. Immunol. 143:125.
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.
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