Tripartite Motif Containing 52 (TRIM52) Promotes Cell Proliferation in Hepatitis B Virus-Associated Hepatocellular...

Area of Science:

• Hepatology
• Oncology
• Molecular Biology

Background:

• Chronic hepatitis B virus (HBV) infection is a primary driver of hepatocellular carcinoma (HCC).
• The HBV X protein (HBx) is implicated in HCC development.
• The role of tripartite motif family proteins, specifically TRIM52, in HBV-associated HCC remains largely uncharacterized.

Purpose of the Study:

• To investigate the expression and functional role of TRIM52 in HBV-associated HCC.
• To elucidate the relationship between TRIM52, HBx, and the NF-κB signaling pathway in HCC.

Main Methods:

• Detection of HBV DNA levels using fluorescence quantitative polymerase chain reaction (FQ-PCR).
• Assessment of TRIM52, HBx, and NF-κB p65 expression via quantitative real-time PCR (qRT-PCR) and Western blot.
• Manipulation of HBx expression and TRIM52 silencing using specific constructs and shRNA.
• Inhibition of NF-κB activation using pyrrolidine dithiocarbamate (PDTC).
• Evaluation of cell proliferation using the Cell Counting Kit-8 (CCK-8) assay.

Main Results:

• TRIM52 expression was elevated in HBV-associated HCC tissues, correlating with HBx levels.
• Ectopic HBx expression increased TRIM52 levels in HepG2 cells.
• TRIM52 silencing inhibited proliferation in HepG2.2.15 cells.
• NF-κB p65 expression was upregulated in HCC cell lines.
• NF-κB inhibition reduced TRIM52 expression and HCC cell viability.

Conclusions:

• TRIM52 promotes cell proliferation in the context of HBV-associated HCC.
• HBx potentially regulates TRIM52 expression via the NF-κB signaling pathway.
• These findings highlight TRIM52 as a potential therapeutic target in HBV-related liver cancer.