Cell penetrating peptide of sodium‑iodide symporter effect on the I‑131 radiotherapy on thyroid cancer

  • Authors:
    • Yi‑Xiang Fan
    • Zhi‑Xin Liang
    • Qing‑Zhu Liu
    • Han Xiao
    • Ke‑Bin Li
    • Ji‑Zhen Wu
  • View Affiliations

  • Published online on: January 23, 2017     https://doi.org/10.3892/etm.2017.4079
  • Pages: 989-994
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Abstract

The aim of the present study was to clarify whether the cell penetrating peptide of sodium-iodide symporter (NIS) has an effect on the I‑131 radiotherapy of thyroid cancer. Firstly, we combined the HIV‑1 TAT peptide (a cell penetrating peptide, dTAT) and established a nanoparticle vector (dTAT NP) to study the delivery efficiency of this cell‑penetrating strategy for tumor‑targeted gene delivery. dTAT NP was transfected into cultured TPC‑1 cells as a model to study the effects of I‑131 radiotherapy on thyroid cancer. Reverse transcription‑quantitative polymerase chain reaction and western blotting results showed that the mRNA and protein expression levels of NIS in the transfected TPC‑1 cells were substantially higher than in the negative control cells. MTT and flow cytometric analyses demonstrated that the cell growth and apoptosis rates of the TPC‑1 cells were significantly inhibited and activated, respectively, by treatment with dTAT NP. The results of DAPI staining showed that treatment with dTAT NP visibly increased the nuclear apoptosis rate of the TPC‑1 cells. The effect of dTAT NP on TPC‑1 cells was associated with the promotion of caspase‑3 and downregulation of the PI3K/Akt signaling pathway. In summary, the present data provide a pre‑clinical proof‑of‑concept for a novel gene delivery system that efficiently delivers NIS to the targeted cancer cells and presents a satisfactory efficacy. This approach may offer an effective strategy for improving thyroid cancer gene therapy.
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March-2017
Volume 13 Issue 3

Print ISSN: 1792-0981
Online ISSN:1792-1015

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Spandidos Publications style
Fan YX, Liang ZX, Liu QZ, Xiao H, Li KB and Wu JZ: Cell penetrating peptide of sodium‑iodide symporter effect on the I‑131 radiotherapy on thyroid cancer. Exp Ther Med 13: 989-994, 2017
APA
Fan, Y., Liang, Z., Liu, Q., Xiao, H., Li, K., & Wu, J. (2017). Cell penetrating peptide of sodium‑iodide symporter effect on the I‑131 radiotherapy on thyroid cancer. Experimental and Therapeutic Medicine, 13, 989-994. https://doi.org/10.3892/etm.2017.4079
MLA
Fan, Y., Liang, Z., Liu, Q., Xiao, H., Li, K., Wu, J."Cell penetrating peptide of sodium‑iodide symporter effect on the I‑131 radiotherapy on thyroid cancer". Experimental and Therapeutic Medicine 13.3 (2017): 989-994.
Chicago
Fan, Y., Liang, Z., Liu, Q., Xiao, H., Li, K., Wu, J."Cell penetrating peptide of sodium‑iodide symporter effect on the I‑131 radiotherapy on thyroid cancer". Experimental and Therapeutic Medicine 13, no. 3 (2017): 989-994. https://doi.org/10.3892/etm.2017.4079