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The lncRNA B3GALT5-AS1 Functions as an HCC Suppressor by Regulating the miR-934/UFM1 Axis
Erlin Chen1,2, Bin Zhou3, Saiyan Bian4,5
1Department of General Surgery, The First Affiliated Hospital of Soochow University, Soochow University, Suzhou, Jiangsu 215123, China.
Abstract:
Accumulating evidence has demonstrated that long noncoding RNA (lncRNA) is importantly related to the occurrence and development of cancer. According to reports, the expression of B3GALT5-AS1 in hepatocellular carcinoma (HCC) is downregulated; however, the role of B3GALT5-AS1 in HCC is not yet clear. In this study, our purpose is to explore the biological function of B3GALT5-AS1 in HCC and its coupling mechanism with miR-934 and ubiquitin-fold modifier 1 (UFM1). We found that the B3GALT5-AS1 expression level was of significant reduction in both HCC tissues and cell lines; B3GALT5-AS1 overexpression (ov) may inhibit the malignant features of HCC. In addition, we demonstrated that miR-934 mimics could reverse the effect of B3GALT5-AS1 ov, which proved miR-934 was the downstream regulator of B3GALT5-AS1. Furthermore, si-UFM1 could reverse the effect of miR-934 inhibitor, which revealed the connection between them. Moreover, we found that B3GALT5-AS1 could keep down the PI3K/AKT pathway through UFM1. Our results demonstrated that B3GALT5-AS1 was an excellent HCC suppressant by regulating miR-934 and UFM1 to achieve negative regulation of HCC cell proliferation, invasion, and metastasis, indicating that B3GALT5-AS1 is a promising potential therapeutic target for HCC treatment.
Insights
B3GALT5-AS1 acts as a tumor suppressor in hepatocellular carcinoma (HCC). It inhibits cancer progression by regulating miR-934 and ubiquitin-fold modifier 1 (UFM1), suggesting it as a therapeutic target for HCC.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Long noncoding RNAs (lncRNAs) are implicated in cancer development.
- B3GALT5-AS1 expression is reduced in hepatocellular carcinoma (HCC).
- The precise role of B3GALT5-AS1 in HCC remains unclear.
Purpose of the Study:
- To investigate the biological function of B3GALT5-AS1 in HCC.
- To elucidate the regulatory mechanism of B3GALT5-AS1 involving miR-934 and ubiquitin-fold modifier 1 (UFM1).
Main Methods:
- Analysis of B3GALT5-AS1 expression in HCC tissues and cell lines.
- Overexpression and inhibition studies of B3GALT5-AS1, miR-934, and UFM1.
- Investigation of the PI3K/AKT signaling pathway.
Main Results:
- B3GALT5-AS1 expression is significantly downregulated in HCC.
- B3GALT5-AS1 overexpression inhibits HCC malignant behaviors.
- B3GALT5-AS1 regulates miR-934 and UFM1, impacting the PI3K/AKT pathway.
- B3GALT5-AS1 suppresses HCC cell proliferation, invasion, and metastasis.
Conclusions:
- B3GALT5-AS1 functions as a tumor suppressor in HCC.
- The B3GALT5-AS1/miR-934/UFM1 axis negatively regulates HCC progression.
- B3GALT5-AS1 represents a potential therapeutic target for HCC treatment.
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