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Article

MicroRNA-522 reverses drug resistance of doxorubicin-induced HT29 colon cancer cell by targeting ABCB5

  • Authors:
    • Ge Yang
    • Ou Jiang
    • Daiqiong Ling
    • Xiaoyue Jiang
    • Pingzong Yuan
    • Guang Zeng
    • Jing Zhu
    • Jie Tian
    • Yaguang Weng
    • Daoquan Wu
  • View Affiliations / Copyright

    Affiliations: Clinical Laboratory, Affiliated Second People's Hospital of Luzhou Medical College, Neijiang, Sichuan 641000, P.R. China, Key Laboratory of Diagnostic Medicine Designated by the Chinese Ministry of Education and School of Diagnostic Medicine, Chongqing Medical University, Chongqing 400016, P.R. China
  • Pages: 3930-3936
    |
    Published online on: June 4, 2015
       https://doi.org/10.3892/mmr.2015.3890
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Abstract

MicroRNAs (miRNAs) are small non-coding RNAs, which are important in the development of multidrug resistance in cancer by regulating gene expression at the post‑transcriptional level. The present study investigated the functional effects of miR‑522 in chemoresistant colon cancer cells. The results demonstrated that miR‑522 was significantly downregulated in doxorubicin (DOX) resistant colon cell line, HT29/DOX, compared with the parental HT29 colon cancer cell line. Overexpression of miR‑522 in the HT29/DOX cells partially restored DOX sensitivity. miRNA target prediction algorithms suggested that ABCB5 was a target gene for miR‑522. A fluorescent reporter assay confirmed that miR‑522 was able to specifically bind to the predicted site of the ABCB5 mRNA 3'‑untranslated region. When miR‑522 was overexpressed in the HT29/DOX cells, the protein expression levels of ABCB5 were downregulated. Furthermore, knockdown of ABCB5 significantly increased the growth inhibition rate of the HT29/DOX cells, compared with the control group. These results suggested that miR‑522 may affect the sensitivity of colon cancer cell lines to DOX treatment by targeting ABCB5.
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Copy and paste a formatted citation
Spandidos Publications style
Yang G, Jiang O, Ling D, Jiang X, Yuan P, Zeng G, Zhu J, Tian J, Weng Y, Wu D, Wu D, et al: MicroRNA-522 reverses drug resistance of doxorubicin-induced HT29 colon cancer cell by targeting ABCB5. Mol Med Rep 12: 3930-3936, 2015.
APA
Yang, G., Jiang, O., Ling, D., Jiang, X., Yuan, P., Zeng, G. ... Wu, D. (2015). MicroRNA-522 reverses drug resistance of doxorubicin-induced HT29 colon cancer cell by targeting ABCB5. Molecular Medicine Reports, 12, 3930-3936. https://doi.org/10.3892/mmr.2015.3890
MLA
Yang, G., Jiang, O., Ling, D., Jiang, X., Yuan, P., Zeng, G., Zhu, J., Tian, J., Weng, Y., Wu, D."MicroRNA-522 reverses drug resistance of doxorubicin-induced HT29 colon cancer cell by targeting ABCB5". Molecular Medicine Reports 12.3 (2015): 3930-3936.
Chicago
Yang, G., Jiang, O., Ling, D., Jiang, X., Yuan, P., Zeng, G., Zhu, J., Tian, J., Weng, Y., Wu, D."MicroRNA-522 reverses drug resistance of doxorubicin-induced HT29 colon cancer cell by targeting ABCB5". Molecular Medicine Reports 12, no. 3 (2015): 3930-3936. https://doi.org/10.3892/mmr.2015.3890
Copy and paste a formatted citation
x
Spandidos Publications style
Yang G, Jiang O, Ling D, Jiang X, Yuan P, Zeng G, Zhu J, Tian J, Weng Y, Wu D, Wu D, et al: MicroRNA-522 reverses drug resistance of doxorubicin-induced HT29 colon cancer cell by targeting ABCB5. Mol Med Rep 12: 3930-3936, 2015.
APA
Yang, G., Jiang, O., Ling, D., Jiang, X., Yuan, P., Zeng, G. ... Wu, D. (2015). MicroRNA-522 reverses drug resistance of doxorubicin-induced HT29 colon cancer cell by targeting ABCB5. Molecular Medicine Reports, 12, 3930-3936. https://doi.org/10.3892/mmr.2015.3890
MLA
Yang, G., Jiang, O., Ling, D., Jiang, X., Yuan, P., Zeng, G., Zhu, J., Tian, J., Weng, Y., Wu, D."MicroRNA-522 reverses drug resistance of doxorubicin-induced HT29 colon cancer cell by targeting ABCB5". Molecular Medicine Reports 12.3 (2015): 3930-3936.
Chicago
Yang, G., Jiang, O., Ling, D., Jiang, X., Yuan, P., Zeng, G., Zhu, J., Tian, J., Weng, Y., Wu, D."MicroRNA-522 reverses drug resistance of doxorubicin-induced HT29 colon cancer cell by targeting ABCB5". Molecular Medicine Reports 12, no. 3 (2015): 3930-3936. https://doi.org/10.3892/mmr.2015.3890
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