Da CL, Tan Y, Zhan YY, Li YW, Liu K, Wang RZ. Radiation-induced expression of HOTAIR, Snail and E-cadherin in esophageal squamous cell carcinoma cells.
Shijie Huaren Xiaohua Zazhi 2016;
24:1227-1232. [DOI:
10.11569/wcjd.v24.i8.1227]
[Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the effect of X-ray radiation on the expression of HOTAIR and epithelial-mesenchymal transition (EMT) related factors in esophageal squamous cell carcinoma (ESCC).
METHODS: Eca109 cells were irradiated with 0, 2, 4, 6, or 8 Gy of X-rays. After 0, 2, 4, 8, 16, or 24 h of radiation, the expression of HOTAIR, Snail and E-cadherin was detected by qRT-PCR and Western blot.
RESULTS: In Eca109 cells irradiated for 24 h, X-ray dose-dependently increased HOTAIR and Snail expression levels but decreased E-cadherin mRNA and protein expression. The mRNA expression levels of HOTAIR and Snail in the 6 Gy and 8 Gy groups were significantly higher than those in the 0 Gy group. Of note, Snail protein level dramatically increased in the 4 Gy group. The expression of E-cadherin mRNA and protein was statistically lower in the 6 Gy and 8 Gy groups compared with the 0 Gy group (P < 0.01). In Eca109 cells irradiated with 8 Gy X-ray, X-ray time-dependently increased the expression of HOTAIR and Snail but decreased E-cadherin mRNA and protein expression. HOTAIR and Snail mRNA and protein expression was significantly higher in the 8 and 16 h groups than in the 0 h group, while the expression of E-cadherin mRNA and protein was gradually decreased in the 8 h group compared with the 0 h group.
CONCLUSION: X-ray induces abnormal expression of HOTAIR, Snail and E-cadherin time- and dose-dependently, which may result in the occurrence of cellular radioresistance.
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