title: Drug-target residence time--a case for G protein-coupled receptors.
abstract: A vast number of marketed drugs act on G protein-coupled receptors (GPCRs), the most successful category of drug targets to date. These drugs usually possess high target affinity and selectivity, and such combined features have been the driving force in the early phases of drug discovery. However, attrition has also been high. Many investigational new drugs eventually fail in clinical trials due to a demonstrated lack of efficacy. A retrospective assessment of successfully launched drugs revealed that their beneficial effects in patients may be attributed to their long drug-target residence times (RTs). Likewise, for some other GPCR drugs short RT could be beneficial to reduce the potential for on-target side effects. Hence, the compounds' kinetics behavior might in fact be the guiding principle to obtain a desired and durable effect in vivo. We therefore propose that drug-target RT should be taken into account as an additional parameter in the lead selection and optimization process. This should ultimately lead to an increased number of candidate drugs moving to the preclinical development phase and on to the market. This review contains examples of the kinetics behavior of GPCR ligands with improved in vivo efficacy and summarizes methods for assessing drug-target RT.
authors.affiliation: Division of Medicinal Chemistry, Leiden Academic Centre for Drug Research, Leiden University, P.O. Box 9502, 2300 RA Leiden, the Netherlands.
authors.forename: Dong
authors.initials: D
authors.lastname: Guo
authors.forename: Julia M
authors.initials: JM
authors.lastname: Hillger
authors.forename: Adriaan P
authors.initials: AP
authors.lastname: IJzerman
authors.forename: Laura H
authors.initials: LH
authors.lastname: Heitman
mesh_terms: D006801:Humans; D007700:Kinetics; D008024:Ligands; D058990:Molecular Targeted Therapy / Q000379:methods*; D043562:Receptors, G-Protein-Coupled / Q000737:chemistry / Q000378:metabolism*; D013329:Structure-Activity Relationship; D013997:Time Factors
chemical_list: D008024:Ligands; D043562:Receptors, G-Protein-Coupled
keywords: GPCR; dissociation rate; drug discovery; residence time