Huang LS, Li HR, Chen G, Lu HP, Li J, Feng ZB. Alteration of gene expression profile in hepatocellular carcinoma HepG2 cells with Sp3 downregulation.
Shijie Huaren Xiaohua Zazhi 2014;
22:1495-1503. [DOI:
10.11569/wcjd.v22.i11.1495]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
AIM: To analyze the alteration of gene expression profile in hepatocellular carcinoma cell line HepG2 with Sp3 downregulation.
METHODS: RNA interference was performed to downregulate Sp3 mRNA in HepG2 cells and NimbleGen Human Gene Expression Microarray was used for gene expression profile analysis. Real-time quantitative PCR was employed to confirm the expression of several differentially expressed genes. The cell cycle was analyzed by flow cytometry.
RESULTS: A total of 1789 genes was found to be differentially expressed in HepG2 cells with Sp3 downregulation, including 1007 up-regulated and 782 down-regulated ones. These genes were involved in many cellular biological process such as proliferation, differentiation, programmed death, adhesion, and metabolic process. Real-time quantitative PCR confirmed the alteration of several cell cycle related genes (CCND1, CCNE2, TGFB1, and CDKN2A). Flow cytometry analysis showed that the percentage of cells in G1 phase increased significantly after Sp3 downregulation.
CONCLUSION: Gene expression profile alters in HepG2 with Sp3 downregulation. Sp3 knockdown induces cell cycle arrest in G0/G1 phase in HepG2 cells. Sp3 may play an essential role in the pathogenesis of hepatocellular carcinoma as a transcription factor via regulating cell cycle progression.
Collapse