VX-710 (biricodar) increases drug retention and enhances chemosensitivity in resistant cells overexpressing P-glycoprotein, multidrug resistance protein, and breast cancer resistance protein.
Abstract | PURPOSE: EXPERIMENTAL DESIGN: RESULTS: In 8226/Dox6 cells (Pgp), VX-710 increased mitoxantrone and daunorubicin uptake by 55 and 100%, respectively, increased their retention by 100 and 60%, respectively, and increased their cytotoxicity 3.1- and 6.9-fold, respectively. In HL60/Adr cells (MRP-1), VX-710 increased mitoxantrone and daunorubicin uptake by 43 and 130%, increased their retention by 90 and 60%, and increased their cytotoxicity 2.4- and 3.3-fold. In 8226/MR20 cells (BCRP(R482)), VX-710 increased mitoxantrone uptake and retention by 60 and 40%, respectively, and increased cytotoxicity 2.4-fold. VX-710 increased daunorubicin uptake and retention by only 10% in 8226/MR20 cells, consistent with the fact that daunorubicin is not a substrate for BCRP(R482), but, nevertheless, it increased daunorubicin cytotoxicity 3.6-fold, and this increase was not associated with intracellular drug redistribution. VX-710 had little effect on uptake, retention, or cytotoxicity of mitoxantrone, daunorubicin, doxorubicin, topotecan, or SN38 in MCF7 AdVP3000 cells (BCRP(R482T)). CONCLUSIONS:
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Authors | Hans Minderman, Kieran L O'Loughlin, Lakshmi Pendyala, Maria R Baer |
Journal | Clinical cancer research : an official journal of the American Association for Cancer Research
(Clin Cancer Res)
Vol. 10
Issue 5
Pg. 1826-34
(Mar 01 2004)
ISSN: 1078-0432 [Print] United States |
PMID | 15014037
(Publication Type: Journal Article, Research Support, Non-U.S. Gov't, Research Support, U.S. Gov't, P.H.S.)
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Chemical References |
- ABCG2 protein, human
- ATP Binding Cassette Transporter, Subfamily B, Member 1
- ATP Binding Cassette Transporter, Subfamily G, Member 2
- ATP-Binding Cassette Transporters
- Antineoplastic Agents
- Neoplasm Proteins
- Piperidines
- Pyridines
- biricodar
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Topics |
- ATP Binding Cassette Transporter, Subfamily B, Member 1
(genetics)
- ATP Binding Cassette Transporter, Subfamily G, Member 2
- ATP-Binding Cassette Transporters
(genetics)
- Antineoplastic Agents
(pharmacokinetics, toxicity)
- Biological Transport
- Cell Line, Tumor
- Cell Survival
(drug effects)
- Drug Resistance, Multiple
(genetics)
- Gene Expression Regulation, Neoplastic
(genetics)
- Humans
- Kinetics
- Neoplasm Proteins
(genetics)
- Piperidines
(pharmacology)
- Pyridines
(pharmacology)
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