125I radiation downregulates TRPV1 expression through miR‑1246 in neuroblastoma cells

Zhang,Dingguo; Xu,Hongwei; Wang,Yuqiong; Wang,Kaixua; Wang,Yuxin; Wu,Bing; Zhu,Jianwei; Peng,Lisi; Gao,Jun; Li,Zhaoshen

doi:10.3892/or.2019.7133

125I radiation downregulates TRPV1 expression through miR‑1246 in neuroblastoma cells

Authors:
- Dingguo Zhang
- Hongwei Xu
- Yuqiong Wang
- Kaixua Wang
- Yuxin Wang
- Bing Wu
- Jianwei Zhu
- Lisi Peng
- Jun Gao
- Zhaoshen Li
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Affiliations: Department of Gastroenterology, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, Guangzhou, Guangdong 518001, P.R. China, Department of Gastroenterology, Kunshan Traditional Chinese Medicine Hospital, Suzhou, Jiangsu 215300, P.R. China, Department of Gastroenterology, PLA 411 Hospital, Shanghai 200081, P.R. China, Department of Gastroenterology, Changhai Hospital, Second Military Medical University, Shanghai 200433, P.R. China, Department of Hepatobiliary Surgery, The Second Hospital of Jiaxing, Jiaxing, Zhejiang 314000, P.R. China
Published online on: April 22, 2019 https://doi.org/10.3892/or.2019.7133
Pages: 243-252

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Abstract

Iodine‑125 (125I) seed radiation applied around the celiac ganglion can relieve the refractory pain in pancreatic cancer. In an in vitro cell radiation model of human neuroblastoma cell lines, the impact of 125I radiation on the expression of transient receptor potential vanilloid‑1 (TRPV1) was investigated. The results indicated that the radiation delivering doses <2.13 Gy did not significantly affect cell growth, whereas the doses >3.12 Gy significantly reduced cell viability. The reduced TRPV1 mRNA level was dependent on the doses, while the reduced protein level occurred at lower doses (2.63 and 4.27 Gy), then returned to normal at an intermediate dose of 5.09 Gy, and decreased again at higher doses (5.91 and 6.73 Gy). The miRNA profiling at the dose of 2.63 Gy revealed 32 and 22 miRNAs that were significantly upregulated and downregulated, respectively. In addition, the upregulated miR‑1246 target, regulated the expression of TRPV1, indicating that miR‑1246 may be a new therapeutic target for pancreatic pain.

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