title: Predicting penetration across the blood-brain barrier from simple descriptors and fragmentation schemes.
abstract: The ability to cross the blood brain barrier (BBB), sometimes expressed as BBB+ and BBB-, is a very important property in drug design. Several computational methods have been employed for the prediction of BBB-penetrating (BBB+) and nonpenetrating (BBB-) compounds with overall accuracies from 75 to 97%. However, most of these models use a large number of descriptors (67-199), and it is not easy to implement the models in order to predict values of BBB+/-. In this work, 19 simple molecular descriptors calculated from Algorithm Builder and fragmentation schemes were used for the analysis of 1593 BBB+/- data. The results show that hydrogen-bonding properties of compounds play a very important role in modeling BBB penetration. Several BBB models based on hydrogen-bonding properties, such as Abraham descriptors, polar surface area (PSA), and number of hydrogen bonding donors and acceptors, have been built using binomial-PLS analysis. The results show that the overall classification accuracy for a training set is over 90%, and overall prediction accuracy for a test set is over 95%.
authors.affiliation: Department of Chemistry, University College London, London WC1H 0AJ, UK.
authors.forename: Yuan H
authors.initials: YH
authors.lastname: Zhao
authors.forename: Michael H
authors.initials: MH
authors.lastname: Abraham
authors.forename: Adam
authors.initials: A
authors.lastname: Ibrahim
authors.forename: Paul V
authors.initials: PV
authors.lastname: Fish
authors.forename: Susan
authors.initials: S
authors.lastname: Cole
authors.forename: Mark L
authors.initials: ML
authors.lastname: Lewis
authors.forename: Marcel J
authors.initials: MJ
authors.lastname: de Groot
authors.forename: Derek P
authors.initials: DP
authors.lastname: Reynolds
mesh_terms: D001185:Artificial Intelligence; D001812:Blood-Brain Barrier / Q000378:metabolism*; D002965:Classification; D006860:Hydrogen Bonding; D008722:Methods; D010539:Permeability; D010599:Pharmacokinetics; D021281:Quantitative Structure-Activity Relationship