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Updated: Dec 26, 2025

Kinase Inhibitor Screening In Self-assembled Human Protein Microarrays
Published on: October 23, 2019
Drug-like property optimization: Discovery of orally bioavailable quinazoline-based multi-targeted kinase inhibitors
Shu-Yu Lin1, Chun-Feng Chang1, Mohane Selvaraj Coumar2
1Institute of Biotechnology and Pharmaceutical Research, National Health Research Institutes, 35 Keyan Road, Zhunan, Miaoli County 35053, Taiwan, ROC.
Abstract:
In an effort to develop new cancer therapeutics, we have reported clinical candidate BPR1K871 (1) as a potentanticancercompound in MOLM-13 and MV4-11 leukemia models, as well as in colorectal and pancreatic animal models. As BPR1K871 lacks oral bioavailability, we continued searching for orally bioavailable analogs through drug-like property optimization. We optimized both the physicochemical properties (PCP) as well as in vitro rat liver microsomal stability of 1, with concomitant monitoring of aurora kinase enzyme inhibition as well as cellular anti-proliferative activity in HCT-116 cell line. Structural modification at the 6- and 7-position of quinazoline core of 1 led to the identification of 34 as an orally bioavailable (F% = 54) multi-kinase inhibitor, which exhibits potent anti-proliferative activity against various cancer cell lines. Quinazoline 34 is selected as a promising oral lead candidate for further preclinical evaluation.
Insights
Researchers developed an orally bioavailable cancer therapeutic by optimizing a compound
Area of Science:
- Medicinal Chemistry
- Oncology
- Drug Discovery
Background:
- BPR1K871 is a potent anticancer compound but lacks oral bioavailability.
- Optimization of drug-like properties is crucial for developing orally administered cancer therapeutics.
Purpose of the Study:
- To identify orally bioavailable analogs of BPR1K871.
- To optimize physicochemical properties and in vitro stability while maintaining anticancer activity.
Main Methods:
- Structural modifications of the quinazoline core of BPR1K871.
- Evaluation of physicochemical properties, in vitro rat liver microsomal stability, aurora kinase inhibition, and anti-proliferative activity in HCT-116 cells.
Main Results:
- Identification of quinazoline 34 as an orally bioavailable (F% = 54) multi-kinase inhibitor.
- Compound 34 demonstrated potent anti-proliferative activity against various cancer cell lines.
Conclusions:
- Quinazoline 34 represents a promising oral lead candidate for further preclinical development.
- Drug-like property optimization successfully yielded an orally bioavailable anticancer agent.
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