Interleukin-1β, Mouse, Recombinant, E. coli

Recombinant, mouse interleukin-1β expressed in E. coli. Suppresses apoptosis in rat ovarian follicles. Involved in inflammatory and immune responses and promotes wound healing. Interleukin-1 is a protein produced by stimulated macrophages and many other cell types. The following biological activities are attributed to IL-1: activation of T cells resulting in the production of IL-2 and expression of IL-2 receptors; initiation of Acute Phase Response by induction of hepatic protein synthesis; increased proteolysis of muscle proteins, amino acid mobilization, and caloric and oxygen utilization; induction of bone resorption; stimulation of fibroblast proliferation; induction of slow-wave sleep; fever production; induction of prostaglandin and leukotriene production; stimulation of thymocyte proliferation; induction of B cell proliferation and maturation and increased immunoglobulin synthesis; induction of collagenase and other proteinases in synovial fibroblasts and articular chrondrocytes, suggesting a role in pathological states such as arthritis; activation of neutrophils. 1 µg is equivalent to 1.1 x 10⁶ WHO units.

ED₅₀= 5-10 pg/ml as measured in a cell proliferation assay

Lyophilized from sterile-filtered PBS, 50 µg BSA/µg IL-1β.

Following reconstitution, aliquot and freeze (-70°C) for long term storage or refrigerate (4°C) for short-term storage. Avoid freeze/thaw cycles of solutions. Stock solutions are stable for up to 1 month at 4°C or for up to 3 months at -70°C.

Reconstitute to a concentration of ≥10 µg/ml with sterile PBS containing ≥0.1% HSA or BSA.

Chun, S.Y., et al. 1995. Endocrinology136, 3120.
Weidmann, B., et al. 1994. Nature370, 434.
Dinarello, C.A., and Wolff, S.M. 1993. N. Engl. J. Med.328, 106.

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Toxicity: Standard Handling (A)