T&L Biotechnology

Product Name

Generic Name

Recombinant Human IL-1β Protein

Synonym

Catabolin,Lymphocyte-activating factor (LAF), Endogenous Pyrogen (EP),Leukocyte

Endogenous Mediator (LEM),Mononuclear Cell Factor (MCF),IL1B,IL-1BETA,IL1F2,IL-1β

Product Information

Construction

A DNA sequence encoding the IL-1β（GenBank: AAA72849.1）was expressed with a His-tag at the C-terminus.

Expression Host

HEK293 cells

QC Testing Purity

> 90 % as determined by SDS-PAGE

Activity

Determined by the dose-dependent stimulation of the proliferation of D10 cells.The expected ED ₅₀ for this effect is ≤ 0.1 ng/ml.

Endotoxin

< 0.1EU per 1 μg of the protein by the LAL method.

Molecular Mass

The recombinant human IL-1β protein consists of 159 amino acids and predicts a molecular mass of 18.2 kD.

Formulation

Lyophilized from sterile PBS, pH 7.4. Normally 6 % mannitol are added as protectants before lyophilization.

Stability & Storage

24 months at 2℃ to 8℃ in lyophilized state. 

6 months at -20℃ under sterile conditions after reconstitution.

12 months at -80℃ under sterile conditions after reconstitution.

Recommend to aliquot the protein into smaller quantities after reconstituting with water for injection, normal saline or PBS, and keep the diluted concentration above 100μg/mL.

Avoid repeated freeze-thaw cycles.

Background

IL-1 βis a pro-inflammatory cytokine produced in various cells, including monocytes, tissue macrophages, keratinocytes, and other epithelial cells. IL-1αand IL-1β bind to the same receptor and have similar biological characteristics. These cytokines have a wide range of activities, including inducing IL-2 release to promote thymocyte proliferation, B cell maturation and proliferation, fibroblast growth factor like activity, and synovial cells releasing prostaglandins and collagenase. However, IL-1 β It is a secreted cytokine, while IL-1 α Mainly a cell related cytokine.

References 

1. A mesenchymal stem cell line transplantation improves neurological function and angiogenesis in intraventricular amyloid β-infused rats.Haque A, Sheikh A, Mamun AA, Yano S, Hashimoto M, Shido O, Nagai A.Curr Alzheimer Res. 2018 Sep 11. doi: 10.2174/1567205015666180911145159.

2. Luteolin protects microglia against rotenone-induced toxicity in a hormetic manner through targeting oxidative stress response, genes associated with Parkinson's disease and inflammatory pathways.Elmazoglu Z, Yar Saglam AS, Sonmez C, Karasu C.Drug Chem Toxicol. 2018 Sep 12:1-8. doi: 10.1080/01480545.2018.1504961.

3.Podocytes contribute, and respond, to the inflammatory environment in lupus nephritis.Wright RD, Beresford MW.Am J Physiol Renal Physiol. 2018 Sep 12. doi: 10.1152/ajprenal.00512.2017.

Trial dosage: A customer can apply for up to five samples a year (the actual trial dosage is determined by telephone or email communication).
Scope of use: Samples are limited to testing and research purposes.
Cost: Free for samples, customer is responsible for shipping and handling charges, reference cost is $50 in the US, €60 in the EU, and $50 in other countries.
How to apply: You can apply by telephone or by email (the email application should specify the sample name, item number, contact person, telephone number, consignee address, etc.).