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Identification of small molecule activators targeting TYK2 pseudokinase domain
Hirokazu Matsumoto1, Tien-Cheng Wang1, Haruka Taniguchi1
1Carna Biosciences, Inc., Kobe 650-0047, Japan.
Bioorganic & Medicinal Chemistry Letters
|April 10, 2025
Summary
Researchers discovered novel aminopyridine analogs that activate Tyrosine Kinase 2 (TYK2), an important enzyme in immune responses. Compound 16b showed a dose-dependent increase in TYK2 enzymatic activity, suggesting potential therapeutic applications.
Area of Science:
- Immunology
- Biochemistry
- Drug Discovery
Background:
- Tyrosine Kinase 2 (TYK2) is essential for adaptive and innate immunity.
- The TYK2 JH2 pseudokinase domain regulates the catalytic JH1 domain, maintaining an inactive state.
- Understanding TYK2 regulation is crucial for developing immunomodulatory therapies.
Purpose of the Study:
- To discover novel activators of Tyrosine Kinase 2 (TYK2).
- To explore the potential of aminopyridine analogs as TYK2 modulators.
- To investigate the structure-activity relationship of modified JH2 binders.
Main Methods:
- Structural modification of a known TYK2 JH2 domain binder.
- Synthesis of aminopyridine analogs.
- Enzymatic assays to measure TYK2 activity.
Main Results:
- Discovery of novel aminopyridine analogs as TYK2 activators.
- Compound 16b demonstrated significant dose-dependent activation of TYK2 enzymatic activity.
- Identification of specific structural modifications leading to TYK2 activation.
Conclusions:
- Aminopyridine analogs represent a new class of TYK2 activators.
- Compound 16b shows promise as a tool for studying TYK2 function or as a therapeutic lead.
- Further research is warranted to explore the therapeutic potential of these novel activators.
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