Abstract
The development of new small molecule-based therapeutic drugs requires accurate quantifcation of drug bioavailability, biological activity and treatment efcacy. Rapidly measuring these endpoints is often hampered by the lack of efcient assay platforms with high sensitivity and specifcity. Using an in vivo model system, we report a simple and sensitive liquid chromatography-tandem mass spectrometry assay to quantify the bioavailability of a recently developed novel cyclin-dependent kinase inhibitor VMY-1-103, a purvalanol B-based analog whose biological activity is enhanced via dansylation. We developed a rapid organic phase extraction technique and validated wide and functional VMY-1-103 distribution in various mouse tissues, consistent with its enhanced potency previously observed in a variety of human cancer cell lines. More importantly, in vivo MRI and single voxel proton MR-Spectroscopy further established that VMY-1-103 inhibited disease progression and afected key metabolites in a mouse model of hedgehog-driven medulloblastoma.
Original language | English |
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Pages (from-to) | 3801-3809 |
Number of pages | 9 |
Journal | Cell Cycle |
Volume | 11 |
Issue number | 20 |
DOIs | |
State | Published - 15 Oct 2012 |
Externally published | Yes |
Keywords
- Animal models
- CDK inhibitor
- MR-Spectroscopy
- MRI
- Medulloblastoma
- Prostate
- Tandem mass spectrometry