Luo W, Cao J, Yang XD, Deng L, Wang GY, Yang C, Li KZ, Li Y. Screening of differentially expressed genes after silencing MCM7 in liver cancer cell line SMMC-7721.
Shijie Huaren Xiaohua Zazhi 2016;
24:1492-1500. [DOI:
10.11569/wcjd.v24.i10.1492]
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Abstract
AIM: To explore the mechanisms of mini-chromosome maintenance protein 7 (MCM7) for regulating the growth of liver cancer cells.
METHODS: The expression of MCM7 gene in SMMC-7721 cells was silenced with small interfering RNA (siRNA). Human genome-wide expression profile chip was then employed to screen the differentially expressed genes, and bioinformatics analysis of the differentially expressed genes was performed. Finally, part of these differentially expressed genes were confirmed by Western blot assay.
RESULTS: In total there were 1010 genes that were differentially expressed in SMMC-7721 cells after the expression of MCM7 was silenced, including 391 up-regulated and 619 down-regulated ones. Bioinformatics analysis showed that these differentially expressed genes are involved in many cellular biological processes such as macromolecular metabolism, cell cycle regulation, cell proliferation regulation, apoptosis, endocytosis, P53 and mTOR signaling pathways. The down-regulation of CCND1, SKP2 and JUP was confirmed by Western blot, which was consistent with the results of the genome-wide expression profile chip.
CONCLUSION: The differentially expressed genes after silencing the gene MCM7 in liver cancer cells SMMC-7721 might provide some clues for understanding the mechanism by which MCM7 affects the growth of liver cancer cells.
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