Mouse ST2/IL-33R Quantikine ELISA Kit

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MST200
Mouse ST2/IL-1 R4 ELISA Standard Curve
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Citations (9)
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Mouse ST2/IL-33R Quantikine ELISA Kit Summary

Assay Type
Solid Phase Sandwich ELISA
Format
96-well strip plate
Assay Length
4.5 hours
Sample Type & Volume Required Per Well
Cell Culture Supernates (50 uL), Serum (10 uL), EDTA Plasma (10 uL), Heparin Plasma (10 uL)
Sensitivity
0.059 ng/mL
Assay Range
0.2 - 10 ng/mL (Cell Culture Supernates, Serum, EDTA Plasma, Heparin Plasma)
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.

Product Summary

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.

Recovery

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 to produce samples with values within the dynamic range of the assay.
Mouse ST2/IL-1 R4 ELISA Linearity

Scientific Data

Mouse ST2/IL-1 R4 ELISA Standard Curve

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Preparation and Storage

Shipping
The product is shipped at ambient temperature. Upon receipt, store it immediately at the temperature recommended below.
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
Entrez Gene IDs:
9173 (Human); 17082 (Mouse)
Alternate Names:
DER4; DER4ST2growth stimulation-expressed; Fit-1; IL-1 R4; IL1R4; IL-1R4; IL-1RL1; IL-33 R; IL33R; IL-33R; interleukin 1 receptor-like 1; interleukin 1 receptor-related protein; interleukin-1 receptor-like 1; Ly84; MGC32623; Protein ST2; ST2; ST2L; ST2V; T1; T1homolog of mouse growth stimulation-expressed
&#9888; 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.

Assay Procedure

Refer to the product for complete assay procedure.

Bring all reagents and samples to room temperature before use. It is recommended that all samples, standards, and controls be assayed in duplicate.
  1.   Prepare all reagents, standard dilutions, and samples as directed in the product insert.
  2.   Remove excess microplate strips from the plate frame, return them to the foil pouch containing the desiccant pack, and reseal.

  3. 50 µL Assay Diluent
  4.   Add 50 µL of Assay Diluent to each well.

  5. 50 µL Standard, Control, or Sample
  6.   Add 50 µL of Standard, Control, or sample to each well. Cover with a plate sealer, and incubate at room temperature for 2 hours on a horizontal orbital microplate shaker.
  7.   Aspirate each well and wash, repeating the process 4 times for a total of 5 washes.

  8. 100 µL Conjugate
  9.   Add 100 µL of Conjugate to each well. Cover with a new plate sealer, and incubate at room temperature for 2 hours on the shaker.
  10.   Aspirate and wash 5 times.

  11. 100 µL Substrate Solution
  12.   Add 100 µL Substrate Solution to each well. Incubate at room temperature for 30 minutes on the benchtop. PROTECT FROM LIGHT.

  13. 100 µL Stop Solution
  14.   Add 100 µL of Stop Solution to each well. Read at 450 nm within 30 minutes. Set wavelength correction to 540 nm or 570 nm.

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

R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions.

9 Citations: Showing 1 - 9
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  1. IL-33 induces thymic involution-associated naive T cell aging and impairs host control of severe infection
    Authors: L Xu, C Wei, Y Chen, Y Wu, X Shou, W Chen, D Lu, H Sun, W Li, B Yu, X Wang, X Zhang, Y Yu, Z Lei, R Tang, J Zhu, Y Li, L Lu, H Zhou, S Zhou, C Su, X Chen
    Nature Communications, 2022-11-12;13(1):6881.
    Species: Mouse
    Sample Types: Serum
  2. Cancer cell-derived interleukin-33 decoy receptor sST2 enhances orthotopic tumor growth in a murine pancreatic cancer model
    Authors: K Takenaga, M Akimoto, N Koshikawa, H Nagase
    PLoS ONE, 2020-04-27;15(4):e0232230.
    Species: Mouse
    Sample Types: Serum
  3. Rorc restrains the potency of ST2+ regulatory T cells in ameliorating intestinal graft-versus-host disease
    Authors: J Yang, A Ramadan, DK Reichenbac, M Loschi, J Zhang, B Griesenaue, H Liu, KL Hippen, BR Blazar, S Paczesny
    JCI Insight, 2019-03-07;0(0):.
    Species: Mouse
    Sample Types: Plasma
  4. From proteomics to discovery of first-in-class ST2 inhibitors active in vivo
    Authors: AM Ramadan, E Daguindau, JC Rech, K Chinnaswam, J Zhang, GL Hura, B Griesenaue, Z Bolten, A Robida, M Larsen, JA Stuckey, CY Yang, S Paczesny
    JCI Insight, 2018-07-26;3(14):.
    Species: Mouse
    Sample Types: Plasma
  5. Effects of carvedilol on structural and functional outcomes and plasma biomarkers in the mouse transverse aortic constriction heart failure model
    Authors: C Hampton, R Rosa, D Szeto, G Forrest, B Campbell, R Kennan, S Wang, CH Huang, L Gichuru, X Ping, X Shen, K Small, J Madwed, JJ Lynch
    SAGE Open Med, 2017-03-30;5(0):2050312117700.
    Species: Mouse
    Sample Types: Plasma
  6. Soluble IL-33 receptor sST2 inhibits colorectal cancer malignant growth by modifying the tumour microenvironment
    Nat Commun, 2016-11-24;7(0):13589.
    Species: Mouse
    Sample Types: Cell Culture Supernates
  7. Fibrates ameliorate the course of bacterial sepsis by promoting neutrophil recruitment via CXCR2.
    Authors: Tancevski I, Nairz M, Duwensee K, Auer K, Schroll A, Heim C, Feistritzer C, Hoefer J, Gerner R, Moschen A, Heller I, Pallweber P, Li X, Theurl M, Demetz E, Wolf A, Wolf D, Eller P, Ritsch A, Weiss G
    EMBO Mol Med, 2014-04-06;6(6):810-20.
    Species: Mouse
    Sample Types: Cell Culture Supernates
  8. Vasoactive intestinal peptide downregulates proinflammatory TLRs while upregulating anti-inflammatory TLRs in the infected cornea.
    Authors: Jiang X, McClellan SA, Barrett RP, Zhang Y, Hazlett LD
    J. Immunol., 2012-06-01;189(1):269-78.
    Species: Mouse
    Sample Types: Tissue Homogenates
  9. Dendritic cell-specific transcript: dendritic cell marker and regulator of TLR-induced cytokine production.
    Authors: Hontelez S, Ansems M, Karthaus N
    J. Immunol., 2012-05-21;189(1):138-45.
    Species: Mouse
    Sample Types: Tissue Homogenates

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