微小RNA-199对胃癌细胞增殖和迁移的影响

doi:10.3881/j.issn.1000-503X.10687

Acta Academiae Medicinae Sinica

Acta Academiae Medicinae Sinica ›› 2018, Vol. 40 ›› Issue (4): 528-533.doi: 10.3881/j.issn.1000-503X.10687

• Original Articles • Previous Articles Next Articles

Effect of MicroRNA-199 on Proliferation and Migration of Gastric Carcinoma Cells

YAN Chao, ZHANG Lianhai, SHAN Fei, LI Shuangxi, JIA Yongning, LI Ziyu()

Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education/Beijing), Gastrointestinal Cancer Center, Peking University Cancer Hospital and Institute, Beijing 100142, China

Received:2018-07-09 Online:2018-08-30 Published:2018-09-08
Supported by:
Supported by the National Key Technology Research and Development Program of the Ministry of Science and Technology of China (2014BAI09B02), Beijing Municipal Administration of Hospitals Clinical Medicine Development of Special Funding (ZYLX201701), and Beijing Municipal Administration of Hospitals’ Mission Plan (SML20151001)

Abstract

Abstract:

Objective To detect the expression of microRNA(miR)-199 in gastric carcinoma tissues and cell lines, and further explore the effect and molecular mechanism of miR-199 on the proliferation and migration of gastric carcinoma cell lines. Methods Reverse transcriptase-polymerse chain reaction was used to detect the expression of miR-199 in gastric carcinoma and adjacent normal tissue obtained from 51 patients and in gastric carcinoma cell lines and human gastric epithelial cell line GES-1. The gastric carcinoma cell lines over-expressing and low-expressing miR-199 were established to detect their proliferation and migration abilities. Dual-luciferase reporter assay was performed to detect the regulatory effect of miR-199 on the 3’untranslated region of TBL1XR1. Western blot was used to explore the miR-199-related mechanism. Results The relative expression of miR-199 in gastric carcinoma tissues was significantly lower than that in the adjacent normal tissue (0.2635±0.0303 vs. 1.6700±0.9613, t=13.95, P<0.001). The relative expressions of miR-199 in gastric carcinoma cell lines AGS (0.81, t=9.13, P<0.001), SGC-7901 (0.83, t=8.88, P<0.001), MKN28 (0.58, t=10.80, P<0.001), KATO-Ⅲ (0.60, t=10.31, P<0.001), MKN-45 (0.27, t=13.10, P<0.001) were significantly lower than that in the normal gastric cell line GES-1 (2.1). In miR-199 over-expressed cell lines, the cell proliferation and migration significantly decreased as compared with the control group of gastric carcinoma cells (731±13 vs. 345±18, t=24.90, P<0.001), and in miR-199 low-expressed group, the cell proliferation and migration increased compared with the control group of gastric carcinoma cells (257±16 vs. 657±8, t=32.59, P<0.001). Dual-luciferase reporter assay proved that miR-199 directly targeted on the 3’ untranslated region of TBL1XR1. Western blot analysis showed that miR-199 inhibited the expression of TBL1XR1. Conclusion The over-expression of miR-199 in gastric carcinoma is associated with the decreased ability of proliferation and migration of gastric carcinoma cells by targeting TBL1XR1.

Key words: gastric carcinoma, microRNA-199, cell proliferation, cell migration, TBL1XR1

CLC Number:

R735.2

YAN Chao, ZHANG Lianhai, SHAN Fei, LI Shuangxi, JIA Yongning, LI Ziyu. Effect of MicroRNA-199 on Proliferation and Migration of Gastric Carcinoma Cells[J].Acta Academiae Medicinae Sinica, 2018, 40(4): 528-533.

Figures/Tables 4

References 15

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Effect of MicroRNA-199 on Proliferation and Migration of Gastric Carcinoma Cells

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