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Updated: May 15, 2026

Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
Published on: April 6, 2012
Regulation of hepatocarcinogenesis by microRNAs
Chun-Ming Wong1, Alan Ka-Lun Kai, Felice Ho-Ching Tsang
1Department of Pathology, University Pathology Building, The University of Hong Kong, Queen Mary Hospital, Pokfulam, Hong Kong.
Abstract:
Liver cancer (hepatocellular carcinoma, HCC) is a major malignancy worldwide. Etiologically, hepatocarcinogenesis is closely associated with HBV and HCV infections; however, its underlying molecular mechanism is not completely understood. MicroRNAs are a class of small non-coding RNAs that negatively regulate gene expression by interacting with the 3'UTR of protein-coding mRNA. MicroRNAs are implicated in nearly all major biological and cellular events, and recent findings further link microRNA deregulation to human carcinogenesis. In this review, we will focus on the aberrant expression of miRNAs in liver cancer and the pathological implications and molecular functions of some well-characterized oncogenic and tumor suppressive miRNAs. Finally, the clinical prospect of miRNAs as a novel diagnostic and therapeutic intervention will be discussed.
Insights
MicroRNAs (miRNAs) are key in liver cancer (hepatocellular carcinoma, HCC) development. This review explores aberrant miRNA expression, their roles in HCC, and potential clinical applications for diagnosis and therapy.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Hepatocellular carcinoma (HCC) is a significant global cancer, often linked to HBV and HCV infections.
- The molecular mechanisms driving hepatocarcinogenesis remain incompletely understood.
- MicroRNAs (miRNAs), small non-coding RNAs regulating gene expression, are increasingly recognized for their role in cancer.
Purpose of the Study:
- To review the aberrant expression of miRNAs in liver cancer.
- To discuss the pathological implications and molecular functions of key oncogenic and tumor-suppressive miRNAs in HCC.
- To explore the potential of miRNAs as diagnostic and therapeutic agents for liver cancer.
Main Methods:
- Literature review focusing on microRNA deregulation in hepatocellular carcinoma.
- Analysis of studies investigating the roles of specific oncogenic and tumor-suppressive miRNAs.
- Examination of current research on miRNA-based diagnostics and therapeutics.
Main Results:
- MicroRNA expression patterns are significantly altered in liver cancer.
- Specific miRNAs function as oncogenes or tumor suppressors, influencing HCC progression.
- Deregulation of miRNAs is a common feature across various stages of hepatocarcinogenesis.
Conclusions:
- Aberrant miRNA expression is integral to liver cancer pathogenesis.
- Understanding miRNA functions offers insights into molecular mechanisms of HCC.
- miRNAs hold promise for novel diagnostic markers and therapeutic strategies in liver cancer treatment.
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