Author

James K. Chen

3 papers indexed here

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Open access Oct 2026

Small-molecule modulators of HIPK4 activity and proteostasis

Homeodomain-interacting protein kinase 4 (HIPK4) is a dual-specificity kinase that is predominantly expressed in differentiating spermatids, required for sperm development, and a promising target for nonhormonal male contraception. Genetic and functional studies have established an essential role for HIPK4 in spermioge...

Zai-Le Zhuang, Riley K. Togashi, P. Kearney et al. · Journal of the American Chem... · 0 citations

Open access Apr 2026

Macrocyclization of Broad-Spectrum Kinase Inhibitor Bosutinib Leads to Potent and Selective Quinoline-Based HIPK4 Inhibitor AZ137

A rational design strategy utilizing macrocyclization of a bosutinib-based scaffold provides a foundational framework for the validating HIPK4 as a therapeutic target and a high-quality resource to elucidate its roles in normal physiology and disease.

Athina Zerva, Nicolai D. Raig, Zai-Le Zhuang et al. · bioRxiv · 1 citation

Open access Aug 2026

Macrocyclization of Broad-Spectrum Kinase Inhibitor Bosutinib Leads to Potent and Selective Quinoline-Based HIPK4 Inhibitor AZ137

Homeodomain-interacting protein kinase 4 (HIPK4) remains an understudied member of the dark kinome. While genetic knockout studies suggest its involvement in spermiogenesis and cutaneous squamous cell carcinoma, whether these cellular functions can be recapitulated by pharmacological inhibition remains to be determin...

Athina Zerva, Nicolai D. Raig, Zaile Zhuang et al. · Journal of Medicinal Chemist... · 0 citations