Open Access

Receptor tyrosine kinase expression in high‑grade gliomas before and after chemoradiotherapy

  • Authors:
    • Kuanyu Wang
    • Ruoyu Huang
    • Chenxing Wu
    • Guanzhang Li
    • Zheng Zhao
    • Huimin Hu
    • Yanwei Liu
  • View Affiliations

  • Published online on: October 29, 2019     https://doi.org/10.3892/ol.2019.11017
  • Pages: 6509-6515
  • Copyright: © Wang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.

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Abstract

Glioma is the most common type of malignant brain tumor, and is characterized by invasive growth and chemoradiotherapy resistance. The following Cancer Genome Atlas mutation subtypes were identified in initial high‑grade gliomas and recurrent gliomas treated by chemoradiotherapy: Isocitrate dehydrogenase 1/2 (IDH1/2) mutation, epidermal growth factor receptor variant III (EGFRvIII) mutation, tumor protein P53 mutation, PTEN mutation, O6‑methylguanine‑DNA methyltransferase promoter methylation and telomerase reverse transcriptase (TERT) mutation. The expression profile of 58 receptor tyrosine kinases (RTKs) were also examined. It was revealed that the proneural tumor subtype and IDH1/2 mutation are more frequent in recurrent tumors compared with initial tumors. Lower frequencies of the classical subtype, EGFRvIII mutation and TERT mutation were identified in recurrent tumors. A set of six RTK genes in which the level of expression was influenced by chemoradiotherapy was identified. Survival analysis revealed that the expression of several RTKs, including apoptosis‑associated tyrosine kinase, fibroblast growth factor receptor 1 and insulin‑like growth factor 1 receptor (IGF1R), was associated with patient survival. The stimulation of glioma cells by IGF1 in vitro was found to decreased the viability of the cells following treatment with temozolomide (TMZ). In addition, the expression level of IGF1R was increased in glioma cells treated with TMZ. These data suggest that altered RTK expression levels may influence the sensitivity of glioma to chemoradiotherapy.
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December-2019
Volume 18 Issue 6

Print ISSN: 1792-1074
Online ISSN:1792-1082

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Spandidos Publications style
Wang K, Huang R, Wu C, Li G, Zhao Z, Hu H and Liu Y: Receptor tyrosine kinase expression in high‑grade gliomas before and after chemoradiotherapy. Oncol Lett 18: 6509-6515, 2019
APA
Wang, K., Huang, R., Wu, C., Li, G., Zhao, Z., Hu, H., & Liu, Y. (2019). Receptor tyrosine kinase expression in high‑grade gliomas before and after chemoradiotherapy. Oncology Letters, 18, 6509-6515. https://doi.org/10.3892/ol.2019.11017
MLA
Wang, K., Huang, R., Wu, C., Li, G., Zhao, Z., Hu, H., Liu, Y."Receptor tyrosine kinase expression in high‑grade gliomas before and after chemoradiotherapy". Oncology Letters 18.6 (2019): 6509-6515.
Chicago
Wang, K., Huang, R., Wu, C., Li, G., Zhao, Z., Hu, H., Liu, Y."Receptor tyrosine kinase expression in high‑grade gliomas before and after chemoradiotherapy". Oncology Letters 18, no. 6 (2019): 6509-6515. https://doi.org/10.3892/ol.2019.11017