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Mouse ST2/IL-33R Quantikine ELISA Kit

R&D Systems, part of Bio-Techne | Catalog # MST200

R&D Systems, part of Bio-Techne
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MST200

Key Product Details

Assay Length

4.5 hours

Sample Type & Volume Required Per Well

Cell Culture Supernates (50 µL), Serum (10 µL), EDTA Plasma (10 µL), Heparin Plasma (10 µL)

Sensitivity

0.059 ng/mL

Assay Range

0.156-10 ng/mL (Cell Culture Supernates, Serum, EDTA Plasma, Heparin Plasma)

Product Summary for Mouse ST2/IL-33R Quantikine ELISA Kit

The Quantikine Mouse ST2/IL-33 R Immunoassay is a 4.5 hour solid phase ELISA designed to measure mouse ST2 in cell culture supernates, serum, and plasma. It contains Sf 21-expressed recombinant mouse ST2 and antibodies raised against the recombinant factor. This immunoassay has been shown to quantitate the recombinant factor accurately. Results obtained using natural mouse ST2 showed dose-response curves that were parallel to the standard curves obtained using the recombinant kit standards. These results indicate that this kit can be used to determine relative mass values for natural mouse ST2.

Product Specifications

Assay Type

Solid Phase Sandwich ELISA

Format

96-well strip plate

Measurement

Quantitative ELISA

Detection Method

Colorimetric - 450nm (TMB)

Conjugate

HRP

Reactivity

Mouse

Specificity

Natural and recombinant mouse ST2

Cross-reactivity

Cross-reactivity observed with 1 or more available related molecules. < 50% cross-species reactivity observed with species tested.

Interference

Interference observed with 1 or more available related molecules.

Precision

Intra-Assay Precision (Precision within an assay) Three samples of known concentration were tested on one plate to assess intra-assay precision.

Inter-Assay Precision (Precision between assays) Three samples of known concentration were tested in separate assays to assess inter-assay precision.

Cell Culture Supernates, EDTA Plasma, Heparin Plasma, Serum

Intra-Assay Precision Inter-Assay Precision
Sample 1 2 3 1 2 3
n 20 20 20 40 40 40
Mean (ng/mL) 0.465 1.34 3.81 0.512 1.43 3.94
Standard Deviation 0.019 0.042 0.106 0.047 0.082 0.138
CV% 4.1 3.1 2.8 9.2 5.7 3.5

Recovery for Mouse ST2/IL-33R Quantikine ELISA Kit

The recovery of mouse ST2 spiked to three levels throughout the range of the assay in various matrices was evaluated.

Sample Type Average % Recovery Range %
Cell Culture Supernates (n=4) 98 81-111
EDTA Plasma (n=4) 104 92-118
Heparin Plasma (n=4) 94 86-103
Serum (n=4) 103 89-113

Linearity

To assess the linearity of the assay, samples containing high concentrations of mouse ST2 were serially diluted with Calibrator Diluent&nbsp;to produce samples with values within the dynamic range of the assay.

Mouse ST2/IL-1 R4 ELISA Linearity

Scientific Data Images for Mouse ST2/IL-33R Quantikine ELISA Kit

Mouse ST2/IL-1 R4 ELISA Standard Curve

Mouse ST2/IL-1 R4 ELISA Standard Curve

Preparation and Storage

Shipping

The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.

Stability & Storage

Store the unopened product at 2 - 8 °C. Do not use past expiration date.

Background: ST2/IL-33R

ST2, also known as IL-1 R4, is a component of the receptor for the proinflammatory cytokine Interleukin-33. The IL-33 receptor additionally includes IL-1 RAcp which also associates with IL-1 RI and IL-1 R rp2/IL-1 R6. A soluble form of ST2 functions as a decoy receptor. IL-33 promotes Th2-biased immune responses, resulting in eosinophilia, mast cell activation, and allergic inflammation. In addition, IL-33 enhances inflammation-associated hypernociception and protects from atherosclerosis and cardiac myocyte hypertrophy. Soluble ST2 is elevated in the serum under inflammatory conditions including allergic asthma, sepsis, trauma, dengue fever, pulmonary disease, and lupus. It is also associated aortic stenosis, congestive cardiomyopathy, and risk of cardiovascular heart failure and death.

Long Name

Interleukin 33 Receptor

Alternate Names

DER4, Fit-1, IL-1 R4, IL-1R4, IL-1RL1, IL-33 R, IL-33R, IL1R4, IL33R, Ly84, ST2L, ST2V, T1

Entrez Gene IDs

9173 (Human); 17082 (Mouse)

Gene Symbol

IL1RL1

Additional ST2/IL-33R Products

Product Documents for Mouse ST2/IL-33R Quantikine ELISA Kit

Certificate of Analysis

To download a Certificate of Analysis, please enter a lot number in the search box below.

Note: Certificate of Analysis not available for kit components.

Product Specific Notices for Mouse ST2/IL-33R Quantikine ELISA Kit

For research use only

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⚠ WARNING: This product can expose you to chemicals including N,N-Dimethylforamide, which is known to the State of California to cause cancer. For more information, go to www.P65Warnings.ca.gov.