Zhang T, Cao HL, Luo SJ, Zheng DL, Chen YN. Construction of a gastric cancer cell line with stably silenced expression of CD14.
Shijie Huaren Xiaohua Zazhi 2014;
22:3194-3200. [DOI:
10.11569/wcjd.v22.i22.3194]
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Abstract
AIM: To develop a SGC-7901 cell line with stably silenced expression of CD14 to provide an experimental basis for the study of the pathogenesis of gastric cancer.
METHODS: A CD14-shRNA lentiviral vector was constructed to transfect gastric cancer SGC-7901 cells. RT-PCR and Western blot were used to detect the CD14 mRNA and protein levels in untreated SGC-7901 cells (blank control group), SGC-7901 cells transfected with NC-CD14 shRNA (NC-CD14 shRNA control group) and SGC-7901 cells transfected with the CD14-shRNA lentiviral vector (CD14-shRNA lentiviral vector group).
RESULTS: CD14-shRNA expression vector was successfully constructed and transfected into gastric cancer cells. RT-PCR showed that the Ct value for the CD14-shRNA lentiviral vector group was significantly higher than those for the NC-CD14 shRNA control group and blank control group (P = 0.000; P < 0.001), and the 2Ct value for the CD14-shRNA lentiviral vector group (1±0.08) was significantly lower than those for the NC-CD14 shRNA control group and blank control group (P = 0.0001; P < 0.001). Western blot analysis showed that the relative expression of CD14 protein in the CD14-shRNA lentiviral vector group (0.01) was significantly less than that in the blank control group (1.0) and NC-CD14 shRNA control group (0.83).
CONCLUSION: A CD14-shRNA lentiviral vector has been successfully transfected into gastric cancer SGC-7901 cells, which can inhibit the expression of CD14 mRNA and protein in SGC-7901 cells.
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