Recombinant Human IL-1 beta / IL-1F2 Protein, premium grade, Tag Free, low endotoxin, 50µg

Background
Interleukin-1 beta (IL-1β) is also known as catabolin, is a cytokine protein that in humans is encoded by the IL1B gene. IL-1β precursor is cleaved by caspase 1 (interleukin 1 beta convertase). Cytosolic thiol protease cleaves the product to form mature IL-1 beta. IL1β are structurally related polypeptides that share approximately 21% amino acid (aa) identity in human. Both proteins are produced by a wide variety of cells in response to inflammatory agents, infections, or microbial endotoxins. While IL1α and IL1β are regulated independently, they bind to the same receptor and exert identical biological effects. IL-1β is a member of the interleukin 1 cytokine family. This cytokine is produced by activated macrophages as a proprotein, which is proteolytically processed to its active form by caspase 1 (CASP1/ICE). This cytokine is an important mediator of the inflammatory response, and is involved in a variety of cellular activities, including cell proliferation, differentiation, and apoptosis. The induction of cyclooxygenase-2 (PTGS2/COX2) by this cytokine in the central nervous system (CNS) is found to contribute to inflammatory pain hypersensitivity. This gene and eight other interleukin 1 family genes form a cytokine gene cluster on chromosome 2.

Source
Recombinant Human IL-1 beta, Tag Free (ILB-H4110) is expressed from E.coli cells. It contains AA Ala 117 - Ser 269 (Accession # P01584-1).
Predicted N-terminus: Met

Human IL-1 beta, premium grade (ILB-H4110), designed for preclinical stage, has the same activity and performance with GMP Human IL-1 beta, which enables a seamless transition from preclinical development to clinical phases. Premium Grade product offer a cost efficient alternative of GMP Grade products for the early development phase when safety of raw materials is not top priority. By using Premium Grade products in early development phase, you can transition easily into clinical and commercial phase without need to revalidate the raw materials and modify manufacturing process.

Molecular Characterization
This protein carries no "tag".
The protein has a calculated MW of 17.5 kDa. The protein migrates as 17 kDa under reducing (R) condition (SDS-PAGE).

Endotoxin
Less than 0.02 EU per μg by the LAL method.

Sterility
The sterility testing was performed by membrane filtration method.

Purity
>95% as determined by SDS-PAGE.
>95% as determined by SEC-MALS.

Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.

Reconstitution
See Certificate of Analysis for reconstitution instructions and specific concentrations.

Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
-20°C to -70°C for 12 months in lyophilized state;
-70^°C for 3 months under sterile conditions after reconstitution.

Bioactivity
Please refer to product data sheet.

Clinical and Translational Updates

(1) "Neuroinflammatory disease disrupts the blood-CNS barrier via crosstalk between proinflammatory and endothelial-to-mesenchymal-transition signaling
Sun, Zhao, Fang et al
Neuron (2022)
(2) "Effects of resveratrol therapy on glucose metabolism, insulin resistance, inflammation, and renal function in the elderly patients with type 2 diabetes mellitus: A randomized controlled clinical trial protocol
Ma, Zhang
Medicine (Baltimore) (2022) 101 (32), e30049
(3) "The protective effect of MiR-27a on the neonatal hypoxic-ischemic encephalopathy by targeting FOXO1 in rats
Cai, Zhang, Shen et al
Transl Pediatr (2022) 11 (7), 1199-1208
Showing 1-3 of 55176 papers.

Citations
(1) "Transcription factor Krüppel-like factor 5-regulated N-myc downstream-regulated gene 2 reduces IL-1β-induced chondrocyte inflammatory injury and extracellular matrix degradation"
Authors: Mei, Xiaoliang et al.
Journal: Bioengineered 2021
Application: Cell culture