Euphorbia factor L1 reverses ABCB1‐mediated multidrug resistance involving interaction with ABCB1 independent of ABCB1 downregualtion
Copyright policy )Euphorbia factor L1 reverses ABCB1‐mediated multidrug resistance involving interaction with ABCB1 independent of ABCB1 downregualtion
AbstractEuphorbia factor L1 (EFL1) belongs to diterpenoids of genus Euphorbia. In this article, its reversal activity against ABCB1‐mediated MDR in KBv200 and MCF‐7/adr cells was reported. However, EFL1 did not alter the sensitivity of KB and MCF‐7 cells to chemotherapeutic agents. Meanwhile, EFL1 significantly increased accumulation of doxorubicin and rhodamine 123 in KBv200 and MCF‐7/adr cells, showing no siginficant influence on that of KB and MCF‐7 cells. Furthermore, EFL1 could enhance the ATP hydrolysis activity of ABCB1 stimulated by verapamil. At the same time, EFL1 inhibited the efflux of ABCB1 in KBv200 and MCF‐7/adr cells. In addition, EFL1 did not downregulate expression of ABCB1 in KBv200 and MCF‐7/adr cells either in mRNA or protein level. J. Cell. Biochem. 112: 1076–1083, 2011. © 2011 Wiley‐Liss, Inc.
- Hong Kong Baptist University China (People's Republic of)
- Guangzhou Medical University China (People's Republic of)
- Sun Yat-sen University China (People's Republic of)
- State Key Laboratory of Oncology in South China China (People's Republic of)
Adenosine Triphosphatases, ATP Binding Cassette Transporter, Subfamily B, Antibiotics, Antineoplastic, Dose-Response Relationship, Drug, Molecular Structure, Phenylpropionates, Cell Survival, Hydrolysis, Blotting, Western, Down-Regulation, Flow Cytometry, Drug Resistance, Multiple, Adenosine Triphosphate, Doxorubicin, Drug Resistance, Neoplasm, Euphorbia, Cell Line, Tumor, Humans, ATP Binding Cassette Transporter, Subfamily B, Member 1, Diterpenes
Adenosine Triphosphatases, ATP Binding Cassette Transporter, Subfamily B, Antibiotics, Antineoplastic, Dose-Response Relationship, Drug, Molecular Structure, Phenylpropionates, Cell Survival, Hydrolysis, Blotting, Western, Down-Regulation, Flow Cytometry, Drug Resistance, Multiple, Adenosine Triphosphate, Doxorubicin, Drug Resistance, Neoplasm, Euphorbia, Cell Line, Tumor, Humans, ATP Binding Cassette Transporter, Subfamily B, Member 1, Diterpenes
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