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HTRF Mouse IFN-β Detection Kit, 500 Assay Points

Mouse Ifn Beta Kit - 100,000 Tests

For research use only. Not for use in diagnostic procedures. All products to be used in accordance with applicable laws and regulations including without limitation, consumption and disposal requirements under European REACH regulations (EC 1907/2006).

Feature Specification
Application Protein Quantification
Sample Volume 16 µL

Mouse Ifn Beta Kit - 100,000 Tests

For research use only. Not for use in diagnostic procedures. All products to be used in accordance with applicable laws and regulations including without limitation, consumption and disposal requirements under European REACH regulations (EC 1907/2006).

Product Variants
Unit Size: 500 Assay Points
Part #:
62MIFNBPEG
List Price
USD 1,372.00
Unit Size: 10,000 Assay Points
Part #:
62MIFNBPEH
List Price
USD 14,590.00

Overview

Type I interferons, interferon alpha (IFN-α) and interferon beta (IFN-β), play essential roles in the innate immune response to viral infections. IFN-β is produced by fibroblasts, macrophages, and dendritic cells, as well as endothelial cells. The expression of the IFN-β gene is controlled by transcription factors like IRF-3, c-Jun/ATF-2, and NF-kappaB downstream of Pattern Recognition Receptors, for example Toll-like receptors. In particular, IFN-β is the primary functional readout of cGas-cGAMP-STING pathway activation. Once secreted, IFN-β binds and activates the IFNAR1/IFNAR2 receptor complex, which relies on STAT1/2 transcription factors. Phosphorylated STAT1/2 leads to the induction of anti-viral gene expression.

Specifications

Application
Protein Quantification
Brand
HTRF
Detection Modality
HTRF
Product Group
Kit
Sample Volume
16 µL
Shipping Conditions
Shipped in Dry Ice
Target Class
Cytokines
Target Species
Mouse
Technology
TR-FRET
Therapeutic Area
Oncology & Inflammation
Unit Size
500 Assay Points

Video gallery

How it works

Assay principle

​Cell supernatant, sample, or standard is dispensed directly into the assay plate for the detection by HTRF® reagents (384-well low-volume white plate or Revvity low-volume 96-well plate in 20 µL). The antibodies labeled with the HTRF donor and acceptor are pre-mixed and added in a single dispensing step, to further streamline the assay procedure. The assay can be run up to a 1536-well format by simply resizing each addition volume proportionally.

 

1cytokines-how-it-works-assay-principle-human-il13-62hil13peg-62hil13peh.svg

 

Assay data analysis

The 4 Parameter Logistic (4PL) curve is commonly recommended for fitting an ELISA standard curve. This regression enables the accurate measurement of an unknown sample across a wider range of concentrations than linear analysis, making it ideally suited to the analysis of biological systems like cytokine releases.

To fully understand how to deal with HTRF data processing and also 4PL 1/y² fitting, 

Revvity has also worked with Myassays.com to help you with your data analysis. you’ll be able to access a free online software to run your IFN beta analysis.

 

Assay details

Technical specifications of mouse IFN beta kit

 

Sample size 16 µL
Final assay volume 20 µL
Kit components Lyophilized standard, frozen detection antibodies, buffers, & protocol
 
LOD & LOQ (in Diluent) 4 pg/mL & 17 pg/mL
Range  17 - 2,000 pg/mL
Time to result  Overnight at RT
Species Mouse only

 

 

Analytical performance

Intra and inter assay

Intra assay (n=24)
 

Sample Mean [IFN-β] (pg/mL) CV
1 75 10%
2 200 3%
3 1125 3%
  Mean CV 5.3%


 

Inter assay (n=6)

Sample Mean [IFN-β] (pg/mL) CV
1 58 3.6%
2 348 3.3%
3 1092 7.3%
  Mean CV 4.7%

 

Assay validation

The mouse STING-specific agonists CMA and DMXAA trigger IFN-β release from NIH-3T3 fibroblast cells

The mouse NIH-3T3 fibroblast cell line was plated in a 96-well culture plate (100,000 cells/well) and incubated for 6h. The cells were then treated with 200 µM of the synthetic mouse STING-specific agonists CMA and DMXAA (under 100 µL). After 24h incubation, cell supernatants were collected and secreted levels of IFN-beta were measured following the procedure given in the HTRF kit’s package insert.

1assay-validation-mouse-ifn-beta-1.svg

 

IFN-β secretion by the murine RAW 264.7 macrophage cell line treated with several STING agonists

The murine RAW 264.7 macrophage cell line was plated in a 96-well culture plate (100,000 cells/well) and incubated overnight. The cells were then treated with a fixed concentration of the synthetic STING agonists CMA, DMXAA, and ADUS100, as well as with the endogenous STING agonist 2'3'-cGAMP (under 100 µL). After 24h secretion, cell supernatants were collected and levels of released IFN-beta were measured following the procedure given in the HTRF kit’s package insert.

2assay-validation-mouse-ifn-beta-2.svg

 

Dose-dependent secretion of IFN-β by the murine RAW 264.7 macrophage cell line treated with 2’3’-cGAMP and ADUS100

The murine RAW 264.7 macrophage cell line was plated in a 96-well culture plate (100,000 cells/well) and incubated for 5h. The cells were then treated with increasing concentrations of either the endogenous STING agonist 2'3'-cGAMP, or the synthetic small molecule ADUS100 (under 100 µL). After an overnight secretion, cell supernatants were collected and levels of released IFN-beta were measured following the procedure given in the HTRF kit’s package insert.​

3assay-validation-mouse-ifn-beta-3.svg

 

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