Human IL-11 ELISA Kit

Catalog No.: BEK1308

Size: 96T

Range: 62.5 pg/ml - 4000 pg/ml

Sensitivity < 15 pg/ml

Storage and Expiration: Store at 2-8℃ for 6 months, or at -20℃ for 12 months.

Application: For quantitative detection of IL-11 in human serum, plasma, body fluids, tissue lysates or cell culture supernatants.

Introduction

Interleukin 11 (IL-11 or adipogenesis inhibitory factor) is a protein that in humans is encoded by the IL11 gene. IL-11 is a cytokine that was first isolated in 1990 from bone marrow-derived fibrocyte-like stromal cells. It was initially thought to be important for hematopoiesis, notably for megakaryocyte maturation, but subsequently shown to be redundant for platelets, and for other blood cell types, in both mice and humans. It was developed as a recombinant protein (rhIL-11) as the drug substance oprelvekin. The human IL-11 gene, consisting of 5 exons and 4 introns, is located on chromosome 19, and encodes a 23 kDa protein. IL-11 is a member of the IL-6-type cytokine family, distinguished based on their use of the common co-receptor gp130.

Principle of the Assay

This kit was based on sandwich enzyme-linked immune-sorbent assay technology. Anti- IL-11 polyclonal antibody was pre-coated onto 96-well plates. And the biotin conjugated anti- IL-11 polyclonal antibody was used as detection antibodies. The standards, test samples and biotin conjugated detection antibody were added to the wells subsequently, and wash with wash buffer. Avidin-Biotin-Peroxidase Complex was added and unbound conjugates were washed away with wash buffer. TMB substrates were used to visualize HRP enzymatic reaction. TMB was catalyzed by HRP to produce a blue color product that changed into yellow after adding acidic stop solution. The density of yellow is proportional to the IL-11 amount of sample captured in plate. Read the O.D. absorbance at 450nm in a microplate reader, and then the concentration of IL-11 can be calculated.

Kit components

1. One 96-well plate pre-coated with anti-human IL-11 antibody
2. Lyophilized human IL-11 standards: 2 tubes (10ng / tube)                     
3. Sample / Standard diluent buffer: 30ml
4. Biotin conjugated anti-human IL-11 antibody (Concentrated): 130μl. Dilution: 1:100
5. Antibody diluent buffer: 12ml
6. Avidin-Biotin-Peroxidase Complex (ABC) (Concentrated): 130μl. Dilution: 1:100
7. ABC diluent buffer: 12ml
8. TMB substrate: 10ml
9. Stop solution: 10ml
10. Wash buffer (25X): 30ml
11. Note: Reconstitute standards and test samples with Kit Component 3.

Material Required But Not Provided

1. 37℃ incubator
2. Microplate reader (wavelength: 450nm)
3. Precise pipette and disposable pipette tips
4. Automated plate washer
5. ELISA shaker
6. 1.5ml of Eppendorf tubes
7. Plate cover
8. Absorbent filter papers
9. Plastic or glass container with volume of above 1L