Total IRAK3 cellular kit HTRF®

This kit enables the detection of cellular IRAK3, and can be used as a normalization assay for the phospho-IRAK3 kit.

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  • All inclusive kit All inclusive kit
  • High sensitivity High sensitivity
  • Enables fast assay qualification Enables fast assay qualification

This kit enables the detection of cellular IRAK3, and can be used as a normalization assay for the phospho-IRAK3 kit.



​IRAK3 is a mediator of toll-like receptor (TLR) and interleukin-1 receptor (IL1R). IRAK3 binds to MyD88 and to IRAK2/4, to inhibit the phosphorylation and activation of IRAK1. IRAK2 acts as a brake on TLR/ILR pathways and has a well-established role in regulating innate immunity. 

This cell-based assay measures the modulation of IRAK3 protein levels.



Total IRAK3 assay principle

The total IRAK3 assay quantifies the expression level of IRAK3 in a cell lysate. Unlike Western Blot, the assay is entirely plate-based and does not require gels, electrophoresis, or transfer.

The Total-IRAK3 assay uses two labeled antibodies: one coupled to a donor fluorophore, the other to an acceptor. Both antibodies are highly specific for a distinct epitope on the protein. In presence of IRAK3 in a cell extract, the addition of these conjugates brings the donor fluorophore into close proximity with the acceptor and thereby generates a FRET signal. Its intensity is directly proportional to the concentration of the protein present in the sample, and provides a means of assessing the protein’s expression under a no-wash assay format.

Total IRAK3 Assay principle

Total IRAK3 2-plate Assay protocol

​The 2 plate protocol involves culturing cells in a 96-well plate before lysis, then transferring lysates into a 384-well low volume detection plate before adding total IRAK3 HTRF detection reagents.

This protocol enables the cells' viability and confluence to be monitored.

Total IRAK3 2-plate Assay protocol

Total IRAK3 1-plate assay protocol

Detection of total IRAK3 with HTRF reagents can be performed in a single plate used for culturing, stimulation and lysis. No washing steps are required.

This HTS designed protocol enables miniaturization while maintaining robust HTRF quality

Total IRAK3 1-plate assay protocol

Endogenous level of IRAK3 on THP-1 cells

THP-1 cells were plated in a 96-well plate (50 µL per well) and incubated for 15 min at 37°C, 5% CO2. Cells were then lysed with 50 µL of supplemented lysis buffer #1 at 2X for 30 minutes at RT under gentle shaking. 16 µL of lysate were transferred into a 384-well low volume white microplate, and 4 µL of the HTRF total IRAK3 detection reagents were added.

The HTRF signal was recorded after 4h of incubation.

Endogenous level of IRAK3 on THP-1 cells

IRAK3 and its role as a negative regulator of TLR/IL1R signaling

​The interleukin-1 receptor-associated kinases (IRAKs) are mediators of toll-like receptors (TLR) and interleukin-1 receptor (IL1R) signaling. 

IRAK4, IRAK2 and IRAK1 signal through TRAF6, thus activating the NFκB and MAPK pathways, and resulting in the transcription of pro-inflammatory cytokines.

IRAK3 inhibits the TLR/IL1R pathway. IRAK3 prevents the dissociation of the active IRAKs (IRAK-1 and IRAK-4) from MyD88,  and in doing so plays the role of a negative regulator of innate TLR-mediated immune responses.

IRAK3 - IL1R/TLR Signaling pathway

HTRF cellular phospho-protein assays

Physiologically relevant results fo fast flowing research - Flyers

Simplified pathway dissection with HTRF phospho-assays and CyBi-felix liquid handling

Analyse of PI3K/AKT/mTor translational control pathway - Application Notes

Lysis buffer compatibility

Cell Signaling: Biomarkers, Phospho- & total-protein Assays - Flyers

Species compatibility

Cell Signaling: Biomarkers, Phospho- & total-protein assays - Flyers

How to run a cell based phospho HTRF assay

What to expect at the bench - Videos

Unleash the potential of your phosphorylation research with HTRF

Unmatched ease of use, sensitivity and specificity assays - Videos

HTRF Alpha-tubulin Housekeeping kit

Properly interpret your compound effect - Application Notes

Best practices for analyzing brain samples with HTRF® phospho assays for neurosciences

Insider Tips for successful sample treatment - Technical Notes

HTRF assays facilitate investigation of the TGFB/SMAD/a-SMA signaling axis in liver fibrosis

Benefits of using HTRF assays to characterize liver fibrosis - Technical Notes

Key guidelines to successful cell signaling experiments

Mastering the art of cell signaling assays optimization - Guides

HTRF cell-based phospho-protein data normalization

Valuable guidelines for efficiently analyzing and interpreting results - Application Notes

HTRF Product Catalog

All your HTRF assays in one document! - Catalog

A guide to Homogeneous Time Resolved Fluorescence

General principles of HTRF - Guides

Product Insert IRAK3 total kit / 63ADK101PEG-63ADK101PEH

63ADK101PEG-63ADK101PEH - Product Insert

HTRF assays for Oncology and Inflammation

Signaling in the immune system - Brochures

How HTRF compares to Western Blot and ELISA

Get the brochure about technology comparison. - Brochures

Optimize your HTRF cell signaling assays on tissues

HTRF and WB compatible guidelines - Technical Notes

Best practices for analyzing tumor xenografts with HTRF phospho assays

Protocol for tumor xenograft analysis with HTRF - Technical Notes

HTRF® cell signaling platform combined with iCell® Hepatocytes

A solution for phospho-protein analysis in metabolic disorders - Posters

HTRF phospho-assays reveal subtle drug-induced effects

Detailed protocol and direct comparison with WB - Posters

Universal HTRF® phospho-protein platform: from 2D, 3D, primary cells to patient derived tumor cells

Analysis of a large panel of diverse biological samples and cellular models - Posters

HTRF phospho assays reveal subtle drug induced effects in tumor-xenografts

Tumor xenograft analysis: HTRF versus Western blot - Application Notes

Note about HMGB1 assay

HTRF HMGB1, IL-1β and IL-18 assays discriminate between inflammasome triggered pyroptosis, and necroptosis - Application Notes

Unleash the potential of your phosphorylation research with HTRF

A fun video introducing you to phosphorylation assays with HTRF - Videos

How to run a cell based phospho HTRF assay

3' video to set up your Phospho assay - Videos

An innate and adaptive immunity recap

Insight into the diversity of cells & signaling pathways - Guides

HTRF phospho-total lysis buffer: a universal alternative to RIPA lysis buffers

Increased flexibility of phospho-assays - Application Notes

Assays for autoimmunity research

Advance your research on autoimmune diseases - Flyers

Advance your research on Fibrosis

Kits and reagents for Fibrosis research - Flyers

Guidelines for Cell Culture and Lysis in Different Formats Prior to HTRF Detection

Seeding and lysing recommendations for a number of cell culture vessels. - Technical Notes

Assessment of drug efficacy and toxicity by combining innovative technologies

Combination of AlphaLISA®, HTRF®, or AlphaLISA® SureFire® Ultra™ immunoassays with the ATPlite™ 1step cell viability assay - Application Notes

Methodological Aspects of Homogeneous Time-Resolved Fluorescence (HTRF)

Learn how to reduce time and sample consumption - Application Notes

Plate Reader Requirement

Choosing the right microplate reader ensures you’ll get an optimal readout. Discover our high performance reader, or verify if your lab equipment is going to be compatible with this detection technology.

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