Expression of mitogen-activated protein kinase kinase 1 in gastric cancer and its clinical significance

doi:10.16098/j.issn.0529-1356.2022.03.006

Abstract

Abstract:

Objective To investigate the expression of mitogen-activated protein kinase kinase 1 (MAP2K1) in gastric cancer and its clinical significance. Methods Immunohistochemistry and Western blotting were used to detect the protein expression of MAP2K1 in gastric cancertissues and cells. The morphology and the expression position of MAP2K1 were observed by immunofluorescence. MAP2K1 mRNA expression in gastric cancer tissues was analyzed by data mining of Starbase database and Oncomine database. The correlation between MAP2K1 mRNA expression and clinicopathological features was analyzed by UALCAN database. Survival analysis was performed using Kaplan Meier-Plotter online analysis tools. GEPIA2 database mining the relationship between MAP2K1 and gastric cancer stem cell related factors and drug resistance related factors. Results Immunohistochemistry, immunofluorescence and Western blotting showed that MAP2K1 protein was highly expressed in gastric cancer tissues and cells, and MAP2K1 was expressed in the cytoplasm of gastric cancer. According to the analysis of various databases, the expression of MAP2K1 mRNA in gastric cancer tissue was higher than that in normal gastric tissue, and the expression of MAP2K1 mRNA was closely related to gastric cancer stage, grade, lymph node metastasis and patient gender, and the overall survival rate of gastric cancer patients in the group with high MAP2K1 mRNA expression was significantly lower than that in the group with low MAP2K1 mRNA expression, which may be related to the characteristics of gastric cancer stem cells and drug resistance. Conclusion MAP2K1 is highly expressed in gastric cancer, and its expression level may affect the poor prognosis of patients by regulating stem cell related factors and drug resistance related factors. MAP2K1 may be a new diagnostic marker to determine the prognosis of gastric cancer patients.

Key words: Mitogen-activated protein kinase kinase 1, Gastric cancer, Gastric cancer cell line AGS and HGC-27, Western blotting, Human

CLC Number:

R735.2

ZHAO Yuan TAO Yue-jia YU Guang-fu GUO Jia-xin LI Meng-qi XU Yuan-yi HUANG Yun-ning. Expression of mitogen-activated protein kinase kinase 1 in gastric cancer and its clinical significance[J]. Acta Anatomica Sinica, 2022, 53(3): 309-316.

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