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MicroRNA-34a: A Versatile Regulator of Myriads of Targets in Different Cancers
Ammad Ahmad Farooqi1, Sobia Tabassum2, Aamir Ahmad3
1Laboratory for Translational Oncology and Personalized Medicine, Rashid Latif Medical College, Lahore 54000, Pakistan. ammadfarooqi@rlmclahore.com.
Abstract:
MicroRNA-34a (miR-34a) is a tumor suppressor that has attracted considerable attention in recent years. It modulates cancer cell invasion, metastasis, and drug resistance, and has also been evaluated as a diagnostic and/or prognostic biomarker. A number of targets of miR-34a have been identified, including some other non-coding RNAs, and it is believed that the modulation of these myriads of targets underlines the versatile role of miR-34a in cancer progression and pathogenesis. Seemingly appealing results from preclinical studies have advocated the testing of miR-34a in clinical trials. However, the results obtained are not very encouraging and there is a need to re-interpret how miR-34a behaves in a context dependent manner in different cancers. In this review, we have attempted to summarize the most recent evidence related to the regulation of different genes and non-coding RNAs by miR-34a and the advances in the field of nanotechnology for the targeted delivery of miR-34a-based therapeutics and mimics. With the emergence of data that contradicts miR-34a's tumor suppressive function, it is important to understand miR-34a's precise functioning, with the aim to establish its role in personalized medicine and to apply this knowledge for the identification of individual patients that are likely to benefit from miR-34a-based therapy.
Insights
MicroRNA-34a (miR-34a) shows promise in cancer therapy by regulating cell invasion and drug resistance. Further research is needed to understand its context-dependent role for personalized medicine applications.
Area of Science:
- Oncology
- Molecular Biology
- Biotechnology
Background:
- MicroRNA-34a (miR-34a) is recognized as a tumor suppressor with roles in cancer cell invasion, metastasis, and drug resistance.
- It has been investigated as a diagnostic and prognostic biomarker in various cancers.
- Numerous targets, including non-coding RNAs, have been identified, suggesting a complex role in cancer pathogenesis.
Purpose of the Study:
- To review recent evidence on miR-34a's regulation of genes and non-coding RNAs.
- To summarize advances in nanotechnology for miR-34a-based therapeutic delivery.
- To re-evaluate miR-34a's function in a context-dependent manner and its potential in personalized medicine.
Main Methods:
- Literature review of preclinical and clinical studies on miR-34a.
- Analysis of research on miR-34a targets and regulatory networks.
- Review of nanotechnology applications for miR-34a delivery systems.
Main Results:
- Preclinical studies show miR-34a's potential, but clinical trial results are mixed.
- Emerging data challenges the consistent tumor-suppressive function of miR-34a.
- Nanotechnology offers promising strategies for targeted delivery of miR-34a therapeutics.
Conclusions:
- Understanding miR-34a's context-dependent behavior is crucial for its clinical application.
- Personalized medicine approaches are needed to identify patients who may benefit from miR-34a therapy.
- Further research is required to clarify miR-34a's precise role in different cancer types.
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