Received:17 May 2018,
Published:15 November 2018
移动端阅览
Jian XU, Yuequan JIANG, Huarong CAI, et al. Expression and clinical significance of miR-142-5p in esophageal squamous cell carcinoma[J]. Journal of Third Military Medical University, 2018, 40(21): 1936-1941.
Jian XU, Yuequan JIANG, Huarong CAI, et al. Expression and clinical significance of miR-142-5p in esophageal squamous cell carcinoma[J]. Journal of Third Military Medical University, 2018, 40(21): 1936-1941. DOI: 10.16016/j.1000-5404.201805133.
Objective
2
To investigate the expression and clinical significance of miR-142-5p in esophageal squamous cell carcinoma (ESCC).
Methods
2
The cancer and para-cancerous tissue specimens of 100 ESCC patients undergoing surgical treatment in our hospital from April to September 2014 were collected
and examined by real time fluorescence quantitative PCR. And all cases were followed up for at least 3 years. Its mRNA expression was also detected in the ESCC cell lines Eca109 and Kyse150 and normal human esophageal epithelial cell line Het-1. Eca109 cells were transfected with miR-142-5p mimic (miR-142-5p mimic group) or mimics control (negative control)
and those untreated served as blank control. The level of TGF-β2 protein was measured by Western blotting. At the same time
the expression levels of miR-142-5p in ESCC cell lines were detected.
Results
2
The relative expression level of miR-142-5p was 0.78±0.16 in the ESCC tissues
which was significantly lower than that in the adjacent tissues (1.43±0.34
P
<
0.05). Its level in the Eca109 (1.53±0.27) and Kyse150 cells (1.12±0.31) were significantly lower than that in the normal esophageal epithelial cell line Het-1a (2.24±0.68
P
<
0.05). The protein level of TGF-β2 protein was significantly lower in the miR-142-5p mimic transfected cells than the negative and blank control cells (
P
<
0.05). The expression level of miR-142-5p in the ESCC tissues was correlated with the lymph node metastasis
tumor stage
and history of alcohol consumption (
P
<
0.05). The time of progression was obviously shorter in the patients with declined miR-142-5p expression than those without (
P
<
0.05).
Conclusion
2
MiR-142-5p is involved in the occurrence of ESCC
and its low expression is related to the invasion
metastasis
and prognosis of ESCC patients.
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