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Rapamycin inhibits proliferation and apoptosis of retinoblastoma cells through PI3K/AKT signaling pathway

  • Authors:
    • Jun Yao
    • Min Xu
    • Ziyao Liu
  • View Affiliations / Copyright

    Affiliations: Department of Ophthalmology, The Central Hospital of Wuhan, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430014, P.R. China, Department of Otorhinolaryngology-Head and Neck Surgery, The Second Affiliated Hospital of Xian Jiaotong University, Xian, Shaanxi 710004, P.R. China, Department of Ophthalmology, The Second Affiliated Hospital of Xian Jiaotong University, Xian, Shaanxi 710004, P.R. China
    Copyright: © Yao et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 2950-2956
    |
    Published online on: January 30, 2020
       https://doi.org/10.3892/ol.2020.11363
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Abstract

Effects of Rapamycin on the proliferation and apoptosis of retinoblastoma cells through the phosphatidylinositol 3-hydroxy kinase (PI3K)/protein kinase B (AKT) signaling pathway were studied. The retinoblastoma Y79 cells were selected and divided into negative control group (NC group), 0.2 µM Rapamycin group and 0.4 µM Rapamycin group. Then the proliferative activity of Y79 cells was detected using Cell Counting Kit-8 (CCK8) assay, the content of reactive oxygen species (ROS), malondialdehyde (MDA) and superoxide dismutase (SOD) in cells in each group was detected using enzyme-linked immunosorbent assay (ELISA), and the apoptosis of Y79 cells was detected via terminal deoxynucleotidyl transferase-mediated dUTP nick end labeling (TUNEL) assay. Moreover, the changes in Y79 cell cycle and apoptosis were determined through flow cytometry, and apoptosis and PI3K/AKT pathway were detected using reverse transcription-polymerase chain reaction (RT-PCR) and western blotting. It was found that the number of cells and the proliferative activity were significantly reduced in 0.2 µM Rapamycin group and 0.4 µM Rapamycin group. In 0.2 µM Rapamycin group and 0.4 µM Rapamycin group, the content of ROS and MDA was significantly decreased, while that of SOD was notably increased. TUNEL assay and flow cytometry showed that in 0.2 µM Rapamycin group and 0.4 µM Rapamycin group, the number of apoptotic cells was obviously increased, and the cell cycle was basically arrested in S phase. The expression levels of Bcl-2, PI3K and AKT declined in 0.2 µM Rapamycin group and 0.4 µM Rapamycin group, whereas the expression of Caspase 8 increased. Similar results were also obtained in the protein assay. The above results were significantly superior in 0.4 µM Rapamycin group to those in 0.2 µM Rapamycin group. Rapamycin inhibits proliferation and promotes apoptosis of retinoblastoma cells through inhibiting the PI3K/AKT signaling pathway.
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Copy and paste a formatted citation
Spandidos Publications style
Yao J, Xu M and Liu Z: Rapamycin inhibits proliferation and apoptosis of retinoblastoma cells through PI3K/AKT signaling pathway. Oncol Lett 19: 2950-2956, 2020.
APA
Yao, J., Xu, M., & Liu, Z. (2020). Rapamycin inhibits proliferation and apoptosis of retinoblastoma cells through PI3K/AKT signaling pathway. Oncology Letters, 19, 2950-2956. https://doi.org/10.3892/ol.2020.11363
MLA
Yao, J., Xu, M., Liu, Z."Rapamycin inhibits proliferation and apoptosis of retinoblastoma cells through PI3K/AKT signaling pathway". Oncology Letters 19.4 (2020): 2950-2956.
Chicago
Yao, J., Xu, M., Liu, Z."Rapamycin inhibits proliferation and apoptosis of retinoblastoma cells through PI3K/AKT signaling pathway". Oncology Letters 19, no. 4 (2020): 2950-2956. https://doi.org/10.3892/ol.2020.11363
Copy and paste a formatted citation
x
Spandidos Publications style
Yao J, Xu M and Liu Z: Rapamycin inhibits proliferation and apoptosis of retinoblastoma cells through PI3K/AKT signaling pathway. Oncol Lett 19: 2950-2956, 2020.
APA
Yao, J., Xu, M., & Liu, Z. (2020). Rapamycin inhibits proliferation and apoptosis of retinoblastoma cells through PI3K/AKT signaling pathway. Oncology Letters, 19, 2950-2956. https://doi.org/10.3892/ol.2020.11363
MLA
Yao, J., Xu, M., Liu, Z."Rapamycin inhibits proliferation and apoptosis of retinoblastoma cells through PI3K/AKT signaling pathway". Oncology Letters 19.4 (2020): 2950-2956.
Chicago
Yao, J., Xu, M., Liu, Z."Rapamycin inhibits proliferation and apoptosis of retinoblastoma cells through PI3K/AKT signaling pathway". Oncology Letters 19, no. 4 (2020): 2950-2956. https://doi.org/10.3892/ol.2020.11363
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