Journal
NATURE REVIEWS DRUG DISCOVERY
Volume 5, Issue 9, Pages 730-739Publisher
NATURE PUBLISHING GROUP
DOI: 10.1038/nrd2082
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Much of drug discovery today is predicated on the concept of selective targeting of particular bioactive macromolecules by low-molecular-mass drugs. The binding of drugs to their macromolecular targets is therefore seen as paramount for pharmacological activity. In vitro assessment of drug - target interactions is classically quantified in terms of binding parameters such as IC50 or K-d. This article presents an alternative perspective on drug optimization in terms of drug - target binary complex residence time, as quantified by the dissociative half-life of the drug - target binary complex. We describe the potential advantages of long residence time in terms of duration of pharmacological effect and target selectivity.
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