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Article Open Access

Downregulation of δ opioid receptor by RNA interference enhances the sensitivity of BEL/FU drug‑resistant human hepatocellular carcinoma cells to 5‑FU

Corrigendum in: /10.3892/mmr.2018.9415
Retraction in: /10.3892/mmr.2023.12974
  • Authors:
    • Bo Tang
    • Zhigao Hu
    • Yang Li
    • Shengguang Yuan
    • Zhenran Wang
    • Shuiping Yu
    • Songqing He
  • View Affiliations / Copyright

    Affiliations: Department of Hepatobiliary Surgery, Guilin Medical University, Affiliated Hospital, Guilin, Guangxi 541001, P.R. China
    Copyright: © Tang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 59-66
    |
    Published online on: November 6, 2015
       https://doi.org/10.3892/mmr.2015.4511
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Abstract

δ opioid receptor (DOR) was the first opioid receptor of the G protein‑coupled receptor family to be cloned. Our previous studies demonstrated that DOR is involved in regulating the development and progression of human hepatocellular carcinoma (HCC), and is involved in the regulation of the processes of invasion and metastasis of HCC cells. However, whether DOR is involved in the development and progression of drug resistance in HCC has not been reported and requires further elucidation. The aim of the present study was to investigate the expression levels of DOR in the drug‑resistant HCC BEL‑7402/5‑fluorouracil (BEL/FU) cell line, and its effects on drug resistance, in order to preliminarily elucidate the effects of DOR in HCC drug resistance. The results of the present study demonstrated that DOR was expressed at high levels in the BEL/FU cells, and the expression levels were higher, compared with those in normal liver cells. When the expression of DOR was silenced, the proliferation of the drug‑resistant HCC cells were unaffected. However, when the cells were co‑treated with a therapeutic dose of 5‑FU, the proliferation rate of the BEL/FU cells was significantly inhibited, a large number of cells underwent apoptosis, cell cycle progression was arrested and changes in the expression levels of drug‑resistant proteins were observed. Overall, the expression of DOR was upregulated in the drug‑resistant HCC cells, and its functional status was closely associated with drug resistance in HCC. Therefore, DOR may become a recognized target molecule with important roles in the clinical treatment of drug‑resistant HCC.
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Copy and paste a formatted citation
Spandidos Publications style
Tang B, Hu Z, Li Y, Yuan S, Wang Z, Yu S and He S: Downregulation of δ opioid receptor by RNA interference enhances the sensitivity of BEL/FU drug‑resistant human hepatocellular carcinoma cells to 5‑FU Corrigendum in /10.3892/mmr.2018.9415 Retraction in /10.3892/mmr.2023.12974. Mol Med Rep 13: 59-66, 2016.
APA
Tang, B., Hu, Z., Li, Y., Yuan, S., Wang, Z., Yu, S., & He, S. (2016). Downregulation of δ opioid receptor by RNA interference enhances the sensitivity of BEL/FU drug‑resistant human hepatocellular carcinoma cells to 5‑FU Corrigendum in /10.3892/mmr.2018.9415 Retraction in /10.3892/mmr.2023.12974. Molecular Medicine Reports, 13, 59-66. https://doi.org/10.3892/mmr.2015.4511
MLA
Tang, B., Hu, Z., Li, Y., Yuan, S., Wang, Z., Yu, S., He, S."Downregulation of δ opioid receptor by RNA interference enhances the sensitivity of BEL/FU drug‑resistant human hepatocellular carcinoma cells to 5‑FU Corrigendum in /10.3892/mmr.2018.9415 Retraction in /10.3892/mmr.2023.12974". Molecular Medicine Reports 13.1 (2016): 59-66.
Chicago
Tang, B., Hu, Z., Li, Y., Yuan, S., Wang, Z., Yu, S., He, S."Downregulation of δ opioid receptor by RNA interference enhances the sensitivity of BEL/FU drug‑resistant human hepatocellular carcinoma cells to 5‑FU Corrigendum in /10.3892/mmr.2018.9415 Retraction in /10.3892/mmr.2023.12974". Molecular Medicine Reports 13, no. 1 (2016): 59-66. https://doi.org/10.3892/mmr.2015.4511
Copy and paste a formatted citation
x
Spandidos Publications style
Tang B, Hu Z, Li Y, Yuan S, Wang Z, Yu S and He S: Downregulation of δ opioid receptor by RNA interference enhances the sensitivity of BEL/FU drug‑resistant human hepatocellular carcinoma cells to 5‑FU Corrigendum in /10.3892/mmr.2018.9415 Retraction in /10.3892/mmr.2023.12974. Mol Med Rep 13: 59-66, 2016.
APA
Tang, B., Hu, Z., Li, Y., Yuan, S., Wang, Z., Yu, S., & He, S. (2016). Downregulation of δ opioid receptor by RNA interference enhances the sensitivity of BEL/FU drug‑resistant human hepatocellular carcinoma cells to 5‑FU Corrigendum in /10.3892/mmr.2018.9415 Retraction in /10.3892/mmr.2023.12974. Molecular Medicine Reports, 13, 59-66. https://doi.org/10.3892/mmr.2015.4511
MLA
Tang, B., Hu, Z., Li, Y., Yuan, S., Wang, Z., Yu, S., He, S."Downregulation of δ opioid receptor by RNA interference enhances the sensitivity of BEL/FU drug‑resistant human hepatocellular carcinoma cells to 5‑FU Corrigendum in /10.3892/mmr.2018.9415 Retraction in /10.3892/mmr.2023.12974". Molecular Medicine Reports 13.1 (2016): 59-66.
Chicago
Tang, B., Hu, Z., Li, Y., Yuan, S., Wang, Z., Yu, S., He, S."Downregulation of δ opioid receptor by RNA interference enhances the sensitivity of BEL/FU drug‑resistant human hepatocellular carcinoma cells to 5‑FU Corrigendum in /10.3892/mmr.2018.9415 Retraction in /10.3892/mmr.2023.12974". Molecular Medicine Reports 13, no. 1 (2016): 59-66. https://doi.org/10.3892/mmr.2015.4511
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