The epigallocatechin gallate derivative Y reverses drug resistance mediated by the ABCB1 transporter both and .
10.1016/j.apsb.2018.10.001
- Author:
Yan WEN
1
;
Ruiqiang ZHAO
1
;
Pranav GUPTA
1
;
Yingfang FAN
1
;
Yunkai ZHANG
1
;
Zhenguang HUANG
2
;
Xiaohui LI
3
;
Yuangang SU
3
;
Lijuan LIAO
3
;
Yu-An XIE
4
;
Donghua YANG
1
;
Zhe-Sheng CHEN
1
;
Gang LIANG
5
Author Information
1. Department of Pharmaceutical Sciences, College of Pharmacy and Health Sciences, St. John׳s University, Queens, NY 11439, USA.
2. Department of Pharmacy, the First Affiliated Hospital of Guangxi Medical University, Nanning 530021, China.
3. Department of Biotechnology, School of Preclinical Medicine, Guangxi Medical University, Nanning 530021, China.
4. The Affiliated Tumor Hospital of Guangxi Medical University, Nanning 530021, China.
5. College of Pharmacy, Guangxi Medical University, Nanning 530021, China.
- Publication Type:Journal Article
- Keywords:
5,3′,4′,3″,4″,5″-6-O-ethyl-EGCG (Y6);
ABCB1;
Drug resistance;
Epigallocatechin gallate (EGCG);
P-gp;
Resistance reversal
- From:
Acta Pharmaceutica Sinica B
2019;9(2):316-323
- CountryChina
- Language:English
-
Abstract:
Previously, we reported that Y, a new epigallocatechin gallate derivative, is efficacious in reversing doxorubicin (DOX)--mediated resistance in hepatocellular carcinoma BEL-7404/DOX cells. In this study, we evaluated the efficacy of Y in reversing drug resistance both and by determining its effect on the adenosine triphosphate-binding cassette protein B1 transporter (ABCB1 or P-glycoprotein, P-gp). Our results showed that Y significantly sensitized cells overexpressing the ABCB1 transporter to anticancer drugs that are ABCB1 substrates. Y significantly stimulated the adenosine triphosphatase activity of ABCB1. Furthermore, Y exhibited a higher docking score as compared with epigallocatechin gallate inside the transmembrane domain of ABCB1. In addition, in the nude mouse tumor xenograft model, Y (110 mg/kg, intragastric administration), in combination with doxorubicin (2 mg/kg, intraperitoneal injection), significantly inhibited the growth of BEL-7404/DOX cell xenograft tumors, compared to equivalent epigallocatechin gallate. In conclusion, Y significantly reversed ABCB1-mediated multidrug resistance and its mechanisms of action may result from its competitive inhibition of the ABCB1 drug efflux function.
