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Article

PARP1-siRNA suppresses human prostate cancer cell growth and progression

  • Authors:
    • Yongchang Lai
    • Zhenzhen Kong
    • Tao Zeng
    • Shaohong Xu
    • Xiaolu Duan
    • Shujue Li
    • Chao Cai
    • Zhijian Zhao
    • Wenqi Wu
  • View Affiliations / Copyright

    Affiliations: Department of Urology, Minimally Invasive Surgery Center, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Urology Research Institute, Guangdong Key Laboratory of Urology, Guangzhou 510230, P.R. China
  • Pages: 1901-1909
    |
    Published online on: January 26, 2018
       https://doi.org/10.3892/or.2018.6238
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Abstract

Poly (ADP-ribose) polymerase (PARP) inhibitors, such as olaparib or rucaparib, have shown treatment efficacy in BRCA1/2-deficient tumors. However, since PARP inhibitors (PARPi) mainly modulate the activation of PARP but not its expression, whether small interfering RNA (siRNA) specific to PARP has the same function as PARPi has not been well defined. In the present study it was demonstrated that PARP1-siRNA could reduce prostate cancer (PCa) cell progression regardless of the BRCA1/2 mutation. PARP1 silencing could significantly inhibit PC3 cell migration and invasion. Additionally, PARP1-siRNA also inhibited the proliferation of PC3 and Du145 cells. After the induction of apoptosis by docetaxel, cleaved-caspase3 of DU145 and C4-2 cells increased significantly in the PARP1-siRNA group. In the xenograft nude mouse model, PARP1-siRNA could suppress xenograft tumor size of PC3 cells and produce a more regular morphology. In vitro and in vivo, PARP1 silencing significantly downregulated vimentin expression and upregulated E-cadherin expression, both of which are epithelial-mesenchymal transition (EMT) markers. It has been revealed that PI3K inhibition could sensitize the effect of PARPi. Notably, PARP1-siRNA could suppress the expression of EGFR and p-GSK3β (Ser9) in PCa cells, which was different from PARPi. Our results indicated that PARP1-siRNA can suppress the growth and invasion capacity of PCa cells, thereby suggesting that PARP1-siRNA, which is different from PARPi, may provide a potential treatment method for PCa.
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Copy and paste a formatted citation
Spandidos Publications style
Lai Y, Kong Z, Zeng T, Xu S, Duan X, Li S, Cai C, Zhao Z and Wu W: PARP1-siRNA suppresses human prostate cancer cell growth and progression. Oncol Rep 39: 1901-1909, 2018.
APA
Lai, Y., Kong, Z., Zeng, T., Xu, S., Duan, X., Li, S. ... Wu, W. (2018). PARP1-siRNA suppresses human prostate cancer cell growth and progression. Oncology Reports, 39, 1901-1909. https://doi.org/10.3892/or.2018.6238
MLA
Lai, Y., Kong, Z., Zeng, T., Xu, S., Duan, X., Li, S., Cai, C., Zhao, Z., Wu, W."PARP1-siRNA suppresses human prostate cancer cell growth and progression". Oncology Reports 39.4 (2018): 1901-1909.
Chicago
Lai, Y., Kong, Z., Zeng, T., Xu, S., Duan, X., Li, S., Cai, C., Zhao, Z., Wu, W."PARP1-siRNA suppresses human prostate cancer cell growth and progression". Oncology Reports 39, no. 4 (2018): 1901-1909. https://doi.org/10.3892/or.2018.6238
Copy and paste a formatted citation
x
Spandidos Publications style
Lai Y, Kong Z, Zeng T, Xu S, Duan X, Li S, Cai C, Zhao Z and Wu W: PARP1-siRNA suppresses human prostate cancer cell growth and progression. Oncol Rep 39: 1901-1909, 2018.
APA
Lai, Y., Kong, Z., Zeng, T., Xu, S., Duan, X., Li, S. ... Wu, W. (2018). PARP1-siRNA suppresses human prostate cancer cell growth and progression. Oncology Reports, 39, 1901-1909. https://doi.org/10.3892/or.2018.6238
MLA
Lai, Y., Kong, Z., Zeng, T., Xu, S., Duan, X., Li, S., Cai, C., Zhao, Z., Wu, W."PARP1-siRNA suppresses human prostate cancer cell growth and progression". Oncology Reports 39.4 (2018): 1901-1909.
Chicago
Lai, Y., Kong, Z., Zeng, T., Xu, S., Duan, X., Li, S., Cai, C., Zhao, Z., Wu, W."PARP1-siRNA suppresses human prostate cancer cell growth and progression". Oncology Reports 39, no. 4 (2018): 1901-1909. https://doi.org/10.3892/or.2018.6238
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