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Monitoring of Nanodrug Accumulation in Murine Breast Cancer Metastases
Published on: August 23, 2024
MicroRNAs as prognostic indicators and therapeutic targets: potential effect on breast cancer management
Aoife J Lowery1, Nicola Miller, Roisin E McNeill
1Department of Surgery, National University of Ireland, Galway, Ireland.
Abstract:
The discovery of microRNAs (miRNA) as novel modulators of gene expression has resulted in a rapidly expanding repertoire of molecules in this family, as reflected in the concomitant expansion of scientific literature. MiRNAs are a category of naturally occurring RNA molecules that play important regulatory roles in plants and animals by targeting mRNAs for cleavage or translational repression. Characteristically, miRNAs are noncoding, single-stranded short (18-22 nucleotides) RNAs, features which possibly explain why they had not been intensively investigated until recently. Accumulating experimental evidence indicates that miRNAs play a pivotal role in many cellular functions via the regulation of gene expression. Furthermore, their dysregulation and/or mutation has been shown in carcinogenesis. We provide a brief review of miRNA biogenesis and discuss the technical challenges of modifying experimental techniques to facilitate the identification and characterization of these small RNAs. MiRNA function and their involvement in malignancy, particularly their putative role as oncogenes or tumor suppressors is also discussed, with a specific emphasis on breast cancer. Finally, we comment on the potential role of miRNAs in breast cancer management, particularly in improving current prognostic tools and achieving the goal of individualized cancer treatment.
Insights
MicroRNAs (miRNAs) regulate gene expression and cellular functions. Their dysregulation is linked to cancer, with potential roles in breast cancer management and personalized treatment.
Area of Science:
- Molecular Biology
- Genetics
- Biochemistry
Background:
- MicroRNAs (miRNAs) are short, noncoding RNA molecules that regulate gene expression.
- Their critical roles in cellular functions and involvement in carcinogenesis are increasingly recognized.
- Recent research highlights their significance, leading to expanded scientific literature.
Purpose of the Study:
- To review microRNA biogenesis and explore technical challenges in their identification and characterization.
- To discuss the function of miRNAs in malignancy, focusing on their roles as oncogenes or tumor suppressors.
- To examine the potential of miRNAs in breast cancer management and personalized treatment strategies.
Main Methods:
- Literature review of miRNA biogenesis and function.
- Discussion of experimental techniques for miRNA identification and characterization.
- Analysis of miRNA involvement in carcinogenesis, with a focus on breast cancer.
Main Results:
- MicroRNAs are pivotal regulators of gene expression with diverse cellular functions.
- Dysregulation and mutations in miRNAs are implicated in cancer development.
- Evidence suggests miRNAs can act as oncogenes or tumor suppressors.
Conclusions:
- MicroRNAs play crucial roles in cellular processes and are involved in cancer.
- Technical challenges in miRNA research are being addressed.
- MicroRNAs hold promise for improving breast cancer prognosis and enabling individualized treatment.
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