Detects human IL-1 alpha /IL-1F1 in direct ELISAs and Western blots. In direct ELISAs, approximately 30% cross-reactivity with recombinant mouse (rm) IL-1 alpha is observed and less than 5% cross-reactivity with recombinant porcine IL-1 alpha, recombinant rat IL‑1 alpha, recombinant cotton rat IL‑1 alpha, recombinant human IL-1 beta and rmIL-1 beta is observed.
Polyclonal Goat IgG
E. coli-derived recombinant human IL-1 alpha /IL-1F1 Ser113-Ala271 Accession # Q53QF9
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.
Recombinant Human IL‑1 alpha /IL‑1F1 (Catalog # 200-LA)
Measured by its ability to neutralize IL‑1 alpha /IL‑1F1-induced proliferation in the D10.G4.1 mouse helper T cell line. Symons, J.A. et al. (1987) in Lymphokines and Interferons, a Practical Approach. Clemens, M.J. et al. (eds): IRL Press. 272. The Neutralization Dose (ND50) is typically 4-20 ng/mL in the presence of 50 pg/mL Recombinant Human IL‑1 alpha /IL‑1F1 and 1.25 µg/mL concanavalin A.
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.
Cell Proliferation Induced by IL‑1 alpha /IL‑1F1 and Neutralization by Human IL‑1 alpha /IL‑1F1 Antibody.
Recombinant Human IL‑1 alpha /IL‑1F1 (Catalog # 200-LA) stimulates proliferation in the the D10.G4.1 mouse helper T cell line in a dose-dependent manner (orange line). Proliferation elicited by Recombinant Human IL‑1 alpha /IL‑1F1 (50 pg/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Human IL‑1 alpha /IL‑1F1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-200-NA). The ND50 is typically 4-20 ng/mL in the presence of concanavalin A (1.25 µg/mL).
IL‑1 alpha /IL‑1F1 was detected in immersion fixed human peripheral blood mononuclear cells (PBMCs) treated with LPS using Goat Anti-Human IL‑1 alpha /IL‑1F1 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF-200-NA) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). View our protocol for Fluorescent ICC Staining of Non-adherent Cells.
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.
Background: IL-1 alpha/IL-1F1
Interleukin 1 (IL-1) is a name that designates two proteins, IL-1 alpha and IL-1 beta, which are the products of distinct genes, but which show approximately 25% amino acid sequence identity and which recognize the same cell surface receptors. Although IL-1 production is generally considered to be a consequence of inflammation, recent evidence suggests that IL-1 is also temporarily upregulated during bone formation and the menstrual cycle and can be induced in response to nervous system stimulation. In response to classic stimuli produced by inflammatory agents, infections or microbial endotoxins, a dramatic increase in the production of IL-1 by macrophages and various other cells is seen. Cells in particular known to produce IL-1 include osteoblasts, monocytes, macrophages, keratinocytes, Kupffer cells, hepatocytes, thymic and salivary gland epithelium, Schwann cells, fibroblasts and glia (oligodendroglia, astrocytes and microglia).
IL-1 alpha and IL-1 beta are both synthesized as 31 kDa precursors that are subsequently cleaved into proteins with molecular weights of approximately 17,000 Da. Neither precursor contains a typical hydrophobic signal peptide sequence and most of the precursor form of IL-1 alpha remains in the cytosol of cells, although there is evidence for a membrane-bound form of the precursor form of IL-1 alpha. The IL-1 alpha precursor reportedly shows full biological activity in the EL-4 assay. Among various species, the amino acid sequence of mature IL-1 alpha is conserved 60% to 70% and human IL-1 has been found to be biologically active on murine cell lines. Both forms of IL-1 bind to the same receptors, designated type I and type II. Evidence suggests that only the type I receptor is capable of signal transduction and that the type II receptor may function as a decoy, binding IL-1 and thus preventing binding of IL-1 to the type I receptor.
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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