microRNA-148a dysregulation discriminates poor prognosis of hepatocellular carcinoma in association with USP4 overexpressionopen access
- Authors
- Heo, Mi Jeong; Kim, Young Mi; Koo, Ja Hyun; Yang, Yoon Mee; An, Jihyun; Lee, Sook-Kyung; Lee, Seung Jin; Kim, Kang Mo; Park, Joong-Won; Kim, Sang Geon
- Issue Date
- May-2014
- Publisher
- IMPACT JOURNALS LLC
- Keywords
- hepatocellular carcinoma; USP4; S1P1; miR-148a; migration; growth
- Citation
- ONCOTARGET, v.5, no.9, pp.2792 - 2806
- Indexed
- SCIE
SCOPUS
- Journal Title
- ONCOTARGET
- Volume
- 5
- Number
- 9
- Start Page
- 2792
- End Page
- 2806
- URI
- https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/23242
- DOI
- 10.18632/oncotarget.1920
- ISSN
- 1949-2553
- Abstract
- Hepatocellular carcinoma (HCC) is classified as a poor prognostic tumor, and becomes frequently aggressive. MicroRNAs emerge as key contributors to tumor progression. This study investigated whether miR-148a dysregulation differentiates poor prognosis of HCC, exploring new targets of miR-148a. miR-148a dysregulation discriminated not only the overall survival and recurrence free survival rates of HCC, but the microvascular invasion. In the human HCC samples, ubiquitin specific protease 4 (USP4) and sphingosine 1-phosphate receptor 1 (S1P1) were up-regulated as the new targets of miR-148a. USP4 and S1P1 were up-regulated in mesenchymal-type liver-tumor cells with miR-148a dysregulation, facilitating migration and proliferation of tumor cells. The inverse relationship between miR-148a and the identified targets was verified in a tumor xenograft model. In the analysis of human samples, the expression of USP4, but not S1P1, correlated with the decrease of miR-148a. In a heterotropic patient-derived HCC xenograft model, USP4 was also overexpressed in G1 and G2 tumors when miR-148a was dysregulated, reflecting the closer link between miR-148a and USP4 for a shift in the expansion phase of tumorgraft. In conclusion, miR-148a dysregulation affects the poor prognosis of HCC. Of the identified targets of miR-148a, USP4 overexpression may contribute to HCC progression towards more aggressive feature.
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