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Article Open Access

siRNA targeting RBP2 inhibits expression, proliferation, tumorigenicity and invasion in thyroid carcinoma cells

  • Authors:
    • Ling‑Ling Kong
    • Dong‑Mei Man
    • Tian Wang
    • Guo‑An Zhang
    • Wen Cui
  • View Affiliations / Copyright

    Affiliations: Department of Pathology, Basic Science School, Jining Medical University, Jining, Shandong 272067, P.R. China, Department of Gynecology, Affiliated Hospital of Jining Medical University, Jining, Shandong 272029, P.R. China, Department of Electrocardiogram, The First Affiliated Hospital of Jining Medical University, Jining, Shandong 272111, P.R. China
    Copyright: © Kong et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 3393-3398
    |
    Published online on: October 7, 2015
       https://doi.org/10.3892/ol.2015.3782
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Abstract

In order to estimate the effects of small interfering RNA (siRNA) targeting retinoblastoma binding protein 2 (RBP2) on the proliferation, expression, invasion, migration and tumorigenicity abilities of papillary thyroid carcinoma K1 cells, siRNA targeting RBP2 (RBP2-siRNA) and negative control siRNA were transfected into K1 cells. The mRNA levels of RBP2 in the transfected cells were estimated by reverse transcription‑quantitative polymerase chain reaction (RT‑qPCR), and the protein levels of RBP2 in these cells were evaluated by western blot analysis and immunocytochemical (ICC) analyses. The growth, tumorigenicity, migration and invasion abilities of the transfected cells were measured by Cell Counting Kit‑8 (CCK‑8), soft agar colony formation and transwell chamber assay, respectively. The ICC results demonstrated that the protein expression levels of RBP2 were lower in the RBP2‑siRNA‑transfected cells than in the blank and control cells (analysis of variance, F=26.754, P<0.01). RBP2‑siRNA downregulated RBP2 at the mRNA (t=8.869) and protein level (F=60.835) (P=0.000 vs. control cells). In addition, the transfection of RBP2‑siRNA into K1 cells also suppressed cell proliferation at 24, 48 and 72 h post‑transfection (t=7.650, P<0.01; t=2.606, P=0.016; and t=2.377, P=0.027, respectively). Compared with the control group, the number of invasive and migrated cells were significantly reduced in the RBP2‑siRNA‑transfected group (t=4.774 and t=6.366, respectively; P<0.01). Furthermore, the tumorigenic potential of the cells transfected with RBP2‑siRNA was markedly reduced, as indicated by the soft agar formation assay (t=2.749, P=0.014 vs. control cells). In conclusion, the transfection of RBP2‑siRNA into papillary thyroid carcinoma K1 cells suppressed the expression of RBP2 in these cells, and reduced their proliferation, invasion, migration and tumorigenic potential. Therefore, targeting RBP2 may be an efficient approach to control thyroid carcinoma.
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Copy and paste a formatted citation
Spandidos Publications style
Kong LL, Man DM, Wang T, Zhang GA and Cui W: siRNA targeting RBP2 inhibits expression, proliferation, tumorigenicity and invasion in thyroid carcinoma cells. Oncol Lett 10: 3393-3398, 2015.
APA
Kong, L., Man, D., Wang, T., Zhang, G., & Cui, W. (2015). siRNA targeting RBP2 inhibits expression, proliferation, tumorigenicity and invasion in thyroid carcinoma cells. Oncology Letters, 10, 3393-3398. https://doi.org/10.3892/ol.2015.3782
MLA
Kong, L., Man, D., Wang, T., Zhang, G., Cui, W."siRNA targeting RBP2 inhibits expression, proliferation, tumorigenicity and invasion in thyroid carcinoma cells". Oncology Letters 10.6 (2015): 3393-3398.
Chicago
Kong, L., Man, D., Wang, T., Zhang, G., Cui, W."siRNA targeting RBP2 inhibits expression, proliferation, tumorigenicity and invasion in thyroid carcinoma cells". Oncology Letters 10, no. 6 (2015): 3393-3398. https://doi.org/10.3892/ol.2015.3782
Copy and paste a formatted citation
x
Spandidos Publications style
Kong LL, Man DM, Wang T, Zhang GA and Cui W: siRNA targeting RBP2 inhibits expression, proliferation, tumorigenicity and invasion in thyroid carcinoma cells. Oncol Lett 10: 3393-3398, 2015.
APA
Kong, L., Man, D., Wang, T., Zhang, G., & Cui, W. (2015). siRNA targeting RBP2 inhibits expression, proliferation, tumorigenicity and invasion in thyroid carcinoma cells. Oncology Letters, 10, 3393-3398. https://doi.org/10.3892/ol.2015.3782
MLA
Kong, L., Man, D., Wang, T., Zhang, G., Cui, W."siRNA targeting RBP2 inhibits expression, proliferation, tumorigenicity and invasion in thyroid carcinoma cells". Oncology Letters 10.6 (2015): 3393-3398.
Chicago
Kong, L., Man, D., Wang, T., Zhang, G., Cui, W."siRNA targeting RBP2 inhibits expression, proliferation, tumorigenicity and invasion in thyroid carcinoma cells". Oncology Letters 10, no. 6 (2015): 3393-3398. https://doi.org/10.3892/ol.2015.3782
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