Active Interleukin 18 (IL18)

IGIF; IL-1g; IL1F4; IL1-F4; Interferon-Gamma-Inducing Factor; Interleukin-1 Family Member 4; Iboctadekin; Interleukin-1 Gamma

  • Active Interleukin 18 (IL18) Packages (Simulation)
  • Active Interleukin 18 (IL18) Packages (Simulation)
  • APA064Hu01.png Figure. SDS-PAGE
  • Active Interleukin 18 (IL18) Figure. Western Blot
  • Certificate ISO9001: 2008, ISO13485: 2003 Registered

ACTIVITY TEST of the Active Interleukin 18 (IL18)

Figure. The binding activity of IL18 with CASP1.
Interleukin-18 (IL18, also known as interferon-gamma inducing factor) is a proinflammatory cytokine that belongs to the IL-1 superfamily and is produced by macrophages and other cells. IL18 works by binding to the interleukin-18 receptor, and together with IL-12 it induces cell-mediated immunity following infection with microbial products like lipopolysaccharide (LPS). Besides, Caspase 1 (CASP1) has been identified as an interactor of IL18, thus a binding ELISA assay was conducted to detect the interaction of recombinant human IL18 and recombinant human CASP1. Briefly, IL18 were diluted serially in PBS with 0.01% BSA (pH 7.4). Duplicate samples of 100uL were then transferred to CASP1-coated microtiter wells and incubated for 2h at 37℃. Wells were washed with PBST and incubated for 1h with anti-IL18 pAb, then aspirated and washed 3 times. After incubation with HRP labelled secondary antibody, wells were aspirated and washed 3 times. With the addition of substrate solution, wells were incubated 15-25 minutes at 37℃. Finally, add 50µL stop solution to the wells and read at 450nm immediately. The binding activity of IL18 and CASP1 was shown in Figure 1, and this effect was in a dose dependent manner.

USAGE of the Active Interleukin 18 (IL18)

Reconstitute in 20mM Tris, 150mM NaCl (PH8.0) to a concentration of 0.1-1.0 mg/mL. Do not vortex.

STORAGE of the Active Interleukin 18 (IL18)

Avoid repeated freeze/thaw cycles. Store at 2-8°C for one month. Aliquot and store at -80°C for 12 months.

STABILITY of the Active Interleukin 18 (IL18)

The thermal stability is described by the loss rate. The loss rate was determined by accelerated thermal degradation test, that is, incubate the protein at 37°C for 48h, and no obvious degradation and precipitation were observed. The loss rate is less than 5% within the expiration date under appropriate storage condition.

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