Hu P, Wang B, Chen T, Xu Y, Zheng G, Zhu Y, Du X. RNA polymerase II subunit 3 regulates vesicular, overexpressed in cancer, prosurvival protein 1 expression to promote hepatocellular carcinoma.
J Int Med Res 2021;
49:300060521990512. [PMID:
33845647 PMCID:
PMC8047087 DOI:
10.1177/0300060521990512]
[Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 01/05/2021] [Indexed: 12/12/2022] Open
Abstract
OBJECTIVE
To explore the relationships between hepatocellular carcinoma (HCC) and the expression of RNA polymerase II subunit 3 (RPB3) and vesicular, overexpressed in cancer, prosurvival protein 1 (VOPP1), and to determine whether RPB3 regulates VOPP1 expression to promote HCC cell proliferation, tumor growth, and tumorigenesis.
METHODS
HCC and adjacent liver samples were collected from 51 patients with HCC who underwent surgical excision between September 20, 2010 and June 22, 2017. Immunohistochemical staining, western blot, quantitative PCR, plate colony assay, and RNA microarray were used to detect relevant indexes for further analyses.
RESULTS
VOPP1 was shown to function as a target gene of RPB3 in facilitating HCC proliferation, and was downregulated after RBP3 silencing. Additionally, hepatic tumor tissues demonstrated high VOPP1 expression. Furthermore, VOPP1 silencing suppressed tumor growth and cell proliferation and elicited apoptosis.
CONCLUSION
RPB3 regulates VOPP1 expression to promote HCC cell proliferation, tumor growth, and tumorigenesis.
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