From Off-Target Risks to Optimized Leads: The Power of Kinase Profiling

Make better-informed decisions about therapeutic opportunities and potential off-target liabilities with high-confidence.

Kinases are central regulators of nearly every cellular process, making them key targets for developing therapies across a wide range of diseases. Conducting thorough kinase profiling is critical for ensuring that a compound selectively hits its intended target, helping to guide lead optimization, explore opportunities for drug repurposing, and anticipate potential off-target effects or side effects.

What is Kinase Profiling?

Kinase profiling involves screening a candidate compound against a broad panel of kinases to determine its activity across the human kinome. This approach provides a comprehensive view of a compound’s selectivity, revealing both intended and unintended interactions. By understanding which kinases a compound inhibits, researchers can optimize potency, reduce off-target liabilities, and guide strategic decisions early in the drug discovery process.

Visualizing Selectivity with the Kinome Tree

Interpreting kinase profiling data can be complex due to the sheer number of kinases in the human genome. The kinome tree provides an intuitive visualization, grouping kinases by family and functional similarity.

By mapping a compound’s activity onto the kinome tree, researchers can quickly identify potential off-target interactions. For example, a compound intended to inhibit a single kinase may also show activity against a kinase in an unrelated family, flagging a potential safety concern. This visualization transforms complex datasets into actionable insights that inform lead optimization, safety assessments, and downstream development decisions.

 

Strategic Value of Kinase Profiling

Kinase profiling is valuable at all stages of preclinical drug discovery and offers several key advantages that directly impact the efficiency and success of drug discovery:

  • Toxicity Prediction: Early identification of off-target interactions helps anticipate potential adverse effects before costly preclinical or clinical stages.
  • Lead Optimization: Data informs chemical modifications that improve selectivity without compromising potency.
  • Regulatory Support: Comprehensive profiling data can strengthen Investigational New Drug (IND) applications and support regulatory submissions.

Partnering with AssayQuant for Kinase Profiling

AssayQuant's KinSight™ Profiling Services leverage our unique PhosphoSens® Technology, a continuous assay format that directly measures substrate phosphorylation throughout the entire reaction. Unlike single-point endpoint assays, this approach generates full progress curves in every well, yielding true reaction rates from dozens of data points. The result is higher-confidence data that reveal both selectivity and mechanism of action.

What You Get When You Profile with Us

By combining this technology with our broad kinase panels, we deliver:

  • Broad Coverage: Selectivity profiling across 400 unique kinase targets, run in duplicate at 1 mM ATP or each target’s ATP Km.
  • Comprehensive Data Package:
    • Detailed kinetic report with annotated progress curves to highlight mechanism of action (MOA).
    • Results delivered in multiple formats:
      • Tabular: % inhibition for each enzyme.
      • Graphical: Waterfall plots of % inhibition and >70% inhibition.
      • Visual: Kinome tree mapping of >70% inhibition.
  • Speed and Expertise: Results delivered in ~2 weeks, with expert guidance to help interpret enzymology and compound behavior.

 

In summary, integrating kinase profiling early in your discovery pipeline de-risks drug development, accelerates decision-making, and helps deliver safer, more effective therapies.

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