Yu ZHANG, Yucheng YANG, Kun YANG, et al. Expression of substance P and neurokinin-1 receptor in nasopharyngeal carcinoma and their clinical significance[J]. Journal of Third Military Medical University, 2020, 42(14): 1392-1397.
DOI:
Yu ZHANG, Yucheng YANG, Kun YANG, et al. Expression of substance P and neurokinin-1 receptor in nasopharyngeal carcinoma and their clinical significance[J]. Journal of Third Military Medical University, 2020, 42(14): 1392-1397. DOI: 10.16016/j.1000-5404.202003047.
Expression of substance P and neurokinin-1 receptor in nasopharyngeal carcinoma and their clinical significance
To investigate the expression of substance P (SP) and its receptor
neurokinin-1 receptor (NK-1R)
in nasopharyngeal carcinoma (NPC) tissues and their correlation with the clinicopathological parameters of the patients.
Methods
2
Real-time fluorescence quantitative PCR (RT-qPCR) and Western blotting were used to detect the expression of SP and NK-1R mRNAs in the specimen of tumor tissues of NPC patients and normal tissues from patients with deviated nasal septum
and their protein expression and distribution in the tissues were observed using immunohistochemistry.
Chi
-square test was used to analyze the correlation of the expression of SP and NK-1R with the clinicopathological characteristics of the patients. CCK8 and Transwell assays were used to evaluate the effects of SP on the proliferation and invasion of HNE1 cells.
Results
2
The mRNA levels of SP and NK-1R were significantly increased in NPC tissues (7.96±1.75 and 7.12±1.54
respectively) as compared with the normal tissues (1.05±0.34
1.04±0.2;
P
<
0.01); the protein expression of SP and NK-1R were also significantly upregulated in the NPC tissues (1.18±0.27 and 0.81±0.17
respectively) in comparison with the normal tissues (0.56±0.06
0.48±0.05;
P
<
0.01). The positive expression rate of SP and NK-1R in the NPC tissues was 64% and 68%
respectively
significantly higher than the rates in normal tissues (11% and 22%
respectively;
P
<
0.01). The positive expression rates of SP and NK-1R were significantly higher in stage Ⅲ and stage Ⅳ NPC cases than in stage Ⅰ-Ⅱ cases (
P
<
0.05). Exogenous SP significantly enhanced the proliferation (
P
<
0.05) and invasion (
P
<
0.01) of HNE1 cells
in vitro
.
Conclusion
2
SP and NK-1R are over-expressed in NPC tissues
and their expression levels are correlated with the TNM stages of NPC
suggesting their value as potential new targets for diagnosis and treatment of NPC.
关键词
Keywords
references
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