Interleukin-2 (IL-2) is a cytokine which was first described and characterized based upon its potent ability to modulate lymphocyte reactivity and promote long term in vitro culture of antigen-specific effector T lymphocytes. It is responsible for the activities previously ascribed to T cell growth factor, thymocyte stimulating factor, helper-factor and T cell replacing factor, to name a few. IL-2 has also been reported to act on neuronal cells. Mouse IL-2 is a 17.2 kD protein containing 149 amino acid residues.  Recombinant mouse IL-2 (Cat. No. 550069) is supplied as a frozen liquid comprised of 0.22 µm sterile-filtered aqueous buffered solution and bovine serum albumin, with no preservatives.  Recombinant mouse IL-2 is ≥ 95% pure as determined by SDS-PAGE, and an absorbance assay based on the Beers-Lambert law.  The endotoxin level is ≤ 0.1 ng/µg of mouse IL-2, as measured in a chromegenic LAL assay.

(RUO)

200 µg/ml

ELISA Standard (Routinely Tested), Bioassay, Blocking (Tested During Development)

Mouse (QC Testing)

IL-2

Frozen aqueous buffered solution containing BSA.

Development References(8) 1. Awatsuji H, Furukawa Y, Nakajima M, Furukawa S, Hayashi K.. Interleukin-2 as a neurotrophic factor for supporting the survival of neurons cultured from various regions of fetal rat brain. J Neurosci Res. 1993; 35(3):305-311. (Biology). 2. Gillis S, Ferm MM, Ou W, Smith KA. T cell growth factor: parameters of production and a quantitative microassay for activity. J Immunol. 1978; 120(6):2027-2032. (Biology). 3. Kashima N, Nishi-Takaoka C, Fujita T, et al. Unique structure of murine interleukin-2 as deduced from cloned cDNAs. Nature. 1985; 313(6001):402-404. (Biology). 4. Mochizuki DY, Watson J, Gillis S. Biochemical separation of interleukin 2. J Immunol Methods. 1980; 39(3):185-201. (Biology). 5. Prussin C, Metcalfe DD. Detection of intracytoplasmic cytokine using flow cytometry and directly conjugated anti-cytokine antibodies. J Immunol Methods. 1995; 188(1):117-128. (Methodology: IC/FCM Block). 6. Sarder M, Saito H, Abe K. Interleukin-2 promotes survival and neurite extension of cultured neurons from fetal rat brain. Brain Res. 1993; 625(2):347-350. (Biology). 7. Watson J, Mochizuki D. Interleukin 2: a class of T cell growth factors. Immunol Rev. 1980; 51:257-278. (Biology). 8. Yokota T, Arai N, Lee F, Rennick D, Mosmann T, Arai K. Use of a cDNA expression vector for isolation of mouse interleukin 2 cDNA clones: expression of T-cell growth-factor activity after transfection of monkey cells. Proc Natl Acad Sci U S A. 1985; 82(1):68-72. (Biology).