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MicroRNAs in cancer metastasis: biological and therapeutic implications
Marie C Sell1, Charmaine A Ramlogan-Steel1, Jason C Steel1
1School of Health, Medical and Applied Sciences, Central Queensland University, Rockhampton, QLD 4701, Australia.
Abstract:
Cancer metastasis is the primary cause of cancer-related deaths. The seeding of primary tumours at a secondary site is a highly inefficient process requiring substantial alterations in the genetic architecture of cancer cells. These alterations include significant changes in global gene expression patterns. MicroRNAs are small, non-protein coding RNAs which play a central role in regulating gene expression. Here, we focus on microRNA determinants of cancer metastasis and examine microRNA dysregulation in metastatic cancer cells. We dissect the metastatic process in a step-wise manner and summarise the involvement of microRNAs at each step. We also discuss the advantages and limitations of different microRNA-based strategies that have been used to target metastasis in pre-clinical models. Finally, we highlight current clinical trials that use microRNA-based therapies to target advanced or metastatic tumours.
Insights
MicroRNAs regulate gene expression and are key to cancer metastasis. This study examines microRNA roles in metastasis and evaluates microRNA-based therapies for advanced cancers.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Cancer metastasis is the leading cause of cancer mortality.
- Metastasis involves significant genetic alterations and gene expression changes in cancer cells.
- MicroRNAs (miRNAs) are small non-coding RNAs crucial for gene expression regulation.
Purpose of the Study:
- To investigate the role of microRNAs in cancer metastasis.
- To analyze microRNA dysregulation in metastatic cancer cells.
- To review microRNA-based strategies for targeting metastasis.
Main Methods:
- Dissection of the metastatic process step-by-step.
- Examination of microRNA involvement at each metastatic stage.
- Review of pre-clinical models and clinical trials using miRNA-based therapies.
Main Results:
- MicroRNAs are significantly dysregulated in metastatic cancer cells.
- Specific microRNAs are implicated at various steps of the metastatic cascade.
- Pre-clinical studies show promise for miRNA-based anti-metastasis strategies.
Conclusions:
- MicroRNAs are critical determinants of cancer metastasis.
- Targeting microRNA dysregulation offers a potential therapeutic avenue for metastatic cancers.
- Clinical trials are exploring microRNA-based therapies for advanced and metastatic tumors.
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