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Published on: August 19, 2012
Rapid synthesis of Abelson tyrosine kinase inhibitors using click chemistry
Karunakaran A Kalesh1, Kai Liu, Shao Q Yao
1Department of Chemistry, National University of Singapore, 3 Science Drive 3, Singapore117543.
Abstract:
Protein kinases catalyze the phosphorylation of serine, threonine, tyrosine and histidine residues in proteins. Aberrant regulation of kinase activity has been implicated in many diseases including cancer. Thus development of new strategies for kinase inhibitor design remains an active area of research with direct relevance to drug development. Abelson (Abl) tyrosine kinase is one of the Src-family of tyrosine kinases and is directly implicated in Chronic Myelogenous Leukemia (CML). In this article, we have, for the first time, developed an efficient method for the construction of small molecule-based bisubstrate inhibitors of Abl kinase using click chemistry. Subsequent biochemical screenings revealed a set of moderately potent inhibitors, a few of which have comparable potency to Imatinib (an FDA-approved drug for treatment of chronic myeloid leukemia) against Abl.
Insights
Researchers developed novel bisubstrate inhibitors for Abelson (Abl) tyrosine kinase, crucial in Chronic Myelogenous Leukemia (CML). Some inhibitors show potency comparable to the drug Imatinib, offering new avenues for CML treatment strategies.
Area of Science:
- Biochemistry and medicinal chemistry
- Drug discovery and development
Background:
- Protein kinases regulate cellular processes through phosphorylation, and their dysregulation is linked to diseases like cancer.
- Abelson (Abl) tyrosine kinase, a member of the Src-family, is a key factor in the pathogenesis of Chronic Myelogenous Leukemia (CML).
- Targeting kinase activity with inhibitors is a critical strategy in developing new therapeutics.
Purpose of the Study:
- To develop an efficient method for constructing small molecule-based bisubstrate inhibitors targeting Abl kinase.
- To identify novel inhibitors with potential therapeutic applications for CML.
Main Methods:
- Utilized click chemistry for the efficient synthesis of bisubstrate inhibitors.
- Performed biochemical screenings to assess the inhibitory potency of the synthesized compounds against Abl kinase.
Main Results:
- Successfully developed a novel method for constructing bisubstrate inhibitors of Abl kinase.
- Identified several moderately potent inhibitors.
- A subset of these inhibitors demonstrated inhibitory potency comparable to Imatinib against Abl kinase.
Conclusions:
- The developed click chemistry approach provides an efficient route to novel Abl kinase inhibitors.
- These findings offer promising lead compounds for the development of next-generation CML therapeutics.
- The study highlights the potential of bisubstrate inhibitors in kinase-targeted drug discovery.
