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The Role of the MiR-181 Family in Hepatocellular Carcinoma
Jinbiao Chen1, Ken Liu1,2, Mathew A Vadas3
1Liver Injury and Cancer Program, Cancer Innovations Centre, Centenary Institute, Sydney Medical School, Faculty of Medicine and Health, The University of Sydney, Camperdown, NSW 2050, Australia.
Abstract:
Hepatocellular carcinoma (HCC) is the fourth-leading cause of cancer-related death worldwide. Due to the high mortality rate in HCC patients, discovering and developing novel systemic treatment options for HCC is a vital unmet medical need. Among the numerous molecular alterations in HCCs, microRNAs (miRNAs) have been increasingly recognised to play critical roles in hepatocarcinogenesis. We and others have recently revealed that members of the microRNA-181 (miR-181) family were up-regulated in some, though not all, human cirrhotic and HCC tissues-this up-regulation induced epithelial-mesenchymal transition (EMT) in hepatocytes and tumour cells, promoting HCC progression. MiR-181s play crucial roles in governing the fate and function of various cells, such as endothelial cells, immune cells, and tumour cells. Previous reviews have extensively covered these aspects in detail. This review aims to give some insights into miR-181s, their targets and roles in modulating signal transduction pathways, factors regulating miR-181 expression and function, and their roles in HCC.
Insights
MicroRNAs-181 (miR-181) are elevated in some liver cancer tissues, promoting tumor progression by inducing epithelial-mesenchymal transition. Understanding miR-181
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Hepatocellular carcinoma (HCC) is a leading cause of cancer death globally, necessitating novel systemic treatments.
- MicroRNAs (miRNAs) are increasingly recognized as key players in hepatocarcinogenesis.
- The microRNA-181 (miR-181) family is upregulated in some cirrhotic and HCC tissues, driving tumor progression.
Purpose of the Study:
- To review the roles of miR-181 family members in hepatocellular carcinoma.
- To explore miR-181 targets and their modulation of signaling pathways.
- To discuss factors regulating miR-181 expression and function in HCC.
Main Methods:
- Literature review of studies on miR-181 in HCC.
- Analysis of molecular mechanisms involving miR-181.
- Synthesis of current knowledge on miR-181's role in hepatocarcinogenesis.
Main Results:
- miR-181 family members are upregulated in a subset of HCC tissues.
- Upregulation of miR-181 induces epithelial-mesenchymal transition (EMT), promoting HCC progression.
- miR-181 influences the function of various cell types, including endothelial and immune cells.
Conclusions:
- miR-181 plays a significant role in HCC development and progression.
- Further research into miR-181 pathways could reveal therapeutic targets for HCC.
- Understanding miR-181 regulation and function is crucial for advancing HCC treatment strategies.
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