Open Access

Involvement of multidrug resistance protein 4 in the hepatocyte efflux of lamivudine and entecavir

  • Authors:
    • Yu‑Tian Liu
    • Wei Liu
    • Gang‑Yan Zhu
    • Fu‑Liang Wang
    • Qian Chen
  • View Affiliations

  • Published online on: March 19, 2018     https://doi.org/10.3892/mmr.2018.8779
  • Pages: 7113-7121
  • Copyright: © Liu et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

Metrics: Total Views: 0 (Spandidos Publications: | PMC Statistics: )
Total PDF Downloads: 0 (Spandidos Publications: | PMC Statistics: )


Abstract

Multidrug resistance protein 4 (MRP4) is capable of transporting acyclic nucleotide phosphonates, but little is known about its role in lamivudine (LAM) and entecavir (ETV) transport. In the present study, the involvement of MRP4 in the transport of LAM and ETV was investigated through in vitro experiments. The cytotoxicity of three antiviral drugs and their activities against HBV as characterized in HepG2.4D14 [wild‑type hepatitis B virus (HBV)] and HepG2.A64 (ETV‑resistant HBV) cells. LAM, ETV and tenofovir (TFV) demonstrated a 50% effective concentration against HBV of 4.14±0.03, 0.13±0.02 and 3.24±0.01 µM in HepG2.4D14 cells and of 5.94±0.20, 6.28±0.07 and 11.43±0.09 µM in HepG2.A64 cells, respectively. After administering 3-([(3-(2-[7-chloro-2-quinolinyl]ethyl)phenyl]-[(3-dimethylamino-3-oxoporphyl)-thio)-methyl]-thio) propanoic acid (MK571), the intracellular concentrations of all three drugs were much lower than the extracellular drug concentrations in these two cell types, whereas the intracellular drug concentrations in wild‑type cells were higher than those in ETV‑resistant cells. Furthermore, the intracellular levels of LAM, ETV and TFV were enhanced and the extracellular concentrations were reduced by addition of MK571. Thus, MRP4 is mainly responsible for the efflux of LAM and ETV in hepatocyte cultures. These results may contribute to enhancing antiviral efficacy.
View Figures
View References

Related Articles

Journal Cover

May-2018
Volume 17 Issue 5

Print ISSN: 1791-2997
Online ISSN:1791-3004

Sign up for eToc alerts

Recommend to Library

Copy and paste a formatted citation
x
Spandidos Publications style
Liu YT, Liu W, Zhu GY, Wang FL and Chen Q: Involvement of multidrug resistance protein 4 in the hepatocyte efflux of lamivudine and entecavir. Mol Med Rep 17: 7113-7121, 2018
APA
Liu, Y., Liu, W., Zhu, G., Wang, F., & Chen, Q. (2018). Involvement of multidrug resistance protein 4 in the hepatocyte efflux of lamivudine and entecavir. Molecular Medicine Reports, 17, 7113-7121. https://doi.org/10.3892/mmr.2018.8779
MLA
Liu, Y., Liu, W., Zhu, G., Wang, F., Chen, Q."Involvement of multidrug resistance protein 4 in the hepatocyte efflux of lamivudine and entecavir". Molecular Medicine Reports 17.5 (2018): 7113-7121.
Chicago
Liu, Y., Liu, W., Zhu, G., Wang, F., Chen, Q."Involvement of multidrug resistance protein 4 in the hepatocyte efflux of lamivudine and entecavir". Molecular Medicine Reports 17, no. 5 (2018): 7113-7121. https://doi.org/10.3892/mmr.2018.8779