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A New Strategy of High-Speed Screening and Quantitative Structure-Activity Relationship Analysis to Evaluate Human ATP-Binding Cassette Transporter ABCG2-Drug Interactions
Abstract
The human ATP-binding cassette (ABC) transporter ABCG2 (BCRP/MXR1/ABCP) plays a critical role in cellular protection against xenobiotics as well as pharmacokinetics of drugs in our body. In the present study, we aimed to analyze the quantitative structure-activity relationship (QSAR) latently residing in ABCG2-drug interactions. We first established standard methods for expression of human ABCG2 in insect cells, quality control of plasma membrane samples by using electron microscopy techniques, and high-speed screening of ABCG2 inhibition with test compounds. Plasma membrane vesicles prepared from ABCG2-expressing Sf9 cells were used as a model system to measure the ATP-dependent transport of [3H]methotrexate (MTX). Forty-nine different therapeutic drugs and natural compounds were tested for their ability to inhibit ABCG2-mediated MTX transport. Based on their inhibition profiles, we performed QSAR analysis using chemical fragmentation codes deduced from the structures of test compounds. Multiple linear regression analysis delineated a relationship between the structural components and the extent of ABCG2 inhibition, allowing us to identify one set of structure-specific chemical fragmentation codes that are closely correlated with the inhibition of ABCG2 transport activity. Based on the QSAR analysis data, we predicted the potency of gefitinib to inhibit ABCG2. The validity of our QSAR-based prediction for gefitinib was examined by actual experiments. Our kinetic analysis experiments suggest that the ABCG2-ATP complex binds gefitinib. The present study provides a new strategy for analyzing ABCG2-drug interactions. This strategy is considered to be practical and useful for the molecular designing of new ABCG2 modulators.
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ABCG2 plays a pivotal role in regulating the cellular accumulation of porphyrins in cancer cells and thereby affects the efficacy of PDD.
“Recent studies provide evidence that adenosine triphosphate (ATP)-binding cassette (ABC) transporter ABCG2 plays a pivotal role in regulating the cellular accumulation of porphyrins in cancer cells and thereby affects the efficacy of PDD.”
QSAR analysis yielded an R2 value of 0.920.
“The R2 value was estimated to be 0.920 [47].”
QSAR analysis revealed that a structure having one amine bonded to one carbon of a heterocyclic ring is an important component for interaction with the ABCG2 protein.
“The QSAR analysis revealed that a structure having one amine bonded to one carbon of a heterocyclic ring is an important component for interaction with the ABCG2 protein [47].”
The QSAR equation was statistically significant with an F value of 50.1.
“Statistical significance was determined by F-test where the F value was calculated to be 50.1 [47].”
Fused heterocyclic ring(s) and two substituents on a carbocyclic ring of the fused heterocyclic ring(s) are important chemical moieties for interaction with ABCG2.
“In addition, fused heterocyclic ring(s) and two substituents on a carbocyclic ring of the fused heterocyclic ring(s) are also important chemical moieties for the interaction with ABCG2 [47].”
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Research works printed but not linked: 29
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The International Transporter Consortium, Giacomini, K. M., Huang, S.-M., Tweedie, D. J., Benet, L. Z., Brouwer, K. L. R., Chu, X., Dahlin, A., Evers, R., Fischer, V., et al. (2010) · Nature Reviews Drug Discovery · doi:10.1038/nrd3028 · Cited by 3,340
Self-citationIshikawa, T., Takahashi, K., Ikeda, N., Kajimoto, Y., Hagiya, Y., Ogura, S.-I., Miyatake, S.-I., & Kuroiwa, T. (2011) · Pharmaceutics · doi:10.3390/pharmaceutics3030615 · Cited by 34
Self-citation
Metadata
- Authors
- Saito, H., Hirano, H., Nakagawa, H., Fukami, T., Oosumi, K., Murakami, K., Kimura, H., Kouchi, T., Konomi, M., Tao, E., Tsujikawa, N., Tarui, S., Nagakura, M., Osumi, M., & Ishikawa, T.
- Affiliations
- Tokyo Institute of Technology (JP)
- Venue
- The Journal of Pharmacology and Experimental Therapeutics
- Publisher
- Elsevier BV
- Published
- 2006-06
- Volume
- 317
- Issue
- 3
- Pages
- 1114-1124
- ISSN
- 0022-3565 (ISSN-L)
- OpenAlex
- W2116612040
- Cited by
- 92
- References
- 0
- Citations by year
- 2025: 1 · 2023: 3 · 2022: 1 · 2021: 3 · 2020: 2 · 2019: 2 · 2018: 2 · 2017: 3 · 2016: 3 · 2015: 5 · 2014: 11 · 2013: 11 · 2012: 7
- FWCI
- 3.97
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Journal of Pharmacology and Experimental Therapeutics (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Yakult Honsha
- Topics
- Health Sciences › Medicine › Oncology › Drug Transport and Resistance Mechanisms
- Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Drug Discovery › Computational Drug Discovery Methods
- Life Sciences › Pharmacology, Toxicology and Pharmaceutics › Pharmacology › Pharmacogenetics and Drug Metabolism
- Keywords
- ABCG2, ABC transporters, drug interactions, methotrexate transport, gefitinib, QSAR, plasma membrane vesicles, Sf9 cells
- MeSH terms
- ATP Binding Cassette Transporter, Subfamily G, Member 2, Animals, Cell Membrane, Cloning, Molecular, Drug Interactions, Pharmaceutical Preparations, Humans, Methotrexate, Microscopy, Electron, Scanning, Neoplasm Proteins, Molecular Structure, Spodoptera, ATP-Binding Cassette Transporters, Quantitative Structure-Activity Relationship
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