Human IL-2 Quantikine HS ELISA Kit Summary
E. coli-expressed recombinant human IL-2 and antibodies raised against the recombinant factor. It has been shown to quantitate recombinant human IL-2 accurately. Results obtained using natural human IL-2 showed linear curves that were parallel to the standard curves obtained using the Quantikine® HS kit standards. These results indicate that this kit can be used to determine relative mass values for natural human IL-2.
Serum, EDTA Plasma, Heparin Plasma
|Intra-Assay Precision||Inter-Assay Precision|
The recovery of natural human IL-2 spiked to levels throughout the range of the assay in various matrices was evaluated.
|Sample Type||Average % Recovery||Range %|
|EDTA Plasma (n=4)||91||84-96|
|Heparin Plasma (n=4)||88||79-95|
Human IL-2 ELISA Standard Curve
Preparation and Storage
Interleukin 2 (IL-2), also known as T cell growth factor (TCGF), is a 15-18 kDa variably glycosylated alpha -helical polypeptide that is a member of the Common gamma Chain ( gamma c) cytokine family (1-4). It exists as a monomer and has a notably short half-life (< 30 minutes) (1). Human IL-2 is synthesized as a 153 amino acid (aa) precursor that contains a 20 aa signal sequence plus a 133 aa mature region (5, 6). The mature region is alpha -helical in nature, and contains one utilized O-linked glycosylation site at Thr3 plus three cysteines, two of which form an intrachain disulfide bond that is essential for activity (7). Mature human IL-2 shares 73%, 66%, 78% and 97% aa identity with canine, rat, feline and rhesus monkey IL-2, respectively. Although human IL-2 shares only approximately 60% aa identity with the highly polymorphic mouse IL-2, human IL-2 is known to be active on mouse IL-2 responsive cells. Cells reported to secrete IL-2 include gamma δ T cells (8), activated conventional CD4+ and CD8+ T cells (1, 9), neurons (10, 11), microglia (12), and hematopoietic stem cells (13).
Citations for Human IL-2 Quantikine HS ELISA Kit
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Association between baseline pro-inflammatory cytokines and brain activation during social exclusion in patients with vulnerability to suicide and depressive disorder
Authors: I Conejero, I Jaussent, A Cazals, E Thouvenot, T Mura, E Le Bars, S Guillaume, S Squalli, P Courtet, E Olié
Sample Types: Serum
Expression of interleukin-18 and caspase-1 in cutaneous T-cell lymphoma.
Authors: Yamanaka K, Clark R, Dowgiert R, Hurwitz D, Shibata M, Rich BE, Hirahara K, Jones DA, Eapen S, Mizutani H, Kupper TS
Clin. Cancer Res., 2006;12(2):376-82.
Sample Types: Plasma
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