Predicting substrates of the human breast cancer resistance protein using a support vector machine method.

Abstract:

BACKGROUND:Human breast cancer resistance protein (BCRP) is an ATP-binding cassette (ABC) efflux transporter that confers multidrug resistance in cancers and also plays an important role in the absorption, distribution and elimination of drugs. Prediction as to if drugs or new molecular entities are BCRP substrates should afford a cost-effective means that can help evaluate the pharmacokinetic properties, efficacy, and safety of these drugs or drug candidates. At present, limited studies have been done to develop in silico prediction models for BCRP substrates. In this study, we developed support vector machine (SVM) models to predict wild-type BCRP substrates based on a total of 263 known BCRP substrates and non-substrates collected from literature. The final SVM model was integrated to a free web server. RESULTS:We showed that the final SVM model had an overall prediction accuracy of ~73% for an independent external validation data set of 40 compounds. The prediction accuracy for wild-type BCRP substrates was ~76%, which is higher than that for non-substrates. The free web server (http://bcrp.althotas.com) allows the users to predict whether a query compound is a wild-type BCRP substrate and calculate its physicochemical properties such as molecular weight, logP value, and polarizability. CONCLUSIONS:We have developed an SVM prediction model for wild-type BCRP substrates based on a relatively large number of known wild-type BCRP substrates and non-substrates. This model may prove valuable for screening substrates and non-substrates of BCRP, a clinically important ABC efflux drug transporter.

journal_name

BMC Bioinformatics

journal_title

BMC bioinformatics

authors

Hazai E,Hazai I,Ragueneau-Majlessi I,Chung SP,Bikadi Z,Mao Q

doi

10.1186/1471-2105-14-130

subject

Has Abstract

pub_date

2013-04-15 00:00:00

pages

130

issn

1471-2105

pii

1471-2105-14-130

journal_volume

14

pub_type

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