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Detection of a Circulating MicroRNA Custom Panel in Patients with Metastatic Colorectal Cancer
Published on: March 14, 2019
Downregulated microRNAs in the colorectal cancer: diagnostic and therapeutic perspectives
Rosa Hernández1, Ester Sánchez-Jiménez2, Consolación Melguizo1
1Institute of Biopathology and Regenerative Medicine (IBIMER), Center of Biomedical Research (CIBM), University of Granada, Granada 18100; Biosanitary Institute of Granada (ibs. GRANADA), SAS-Universidad de Granada, Granada 18100; Department of Human Anatomy and Embryology, School of Medicine, University of Granada, Granada 18100, Spain.
Abstract:
Colorectal cancer (CRC), the third most common cancer in the world, has no specific biomarkers that facilitate its diagnosis and subsequent treatment. The miRNAs, small single-stranded RNAs that repress the mRNA translation and trigger the mRNA degradation, show aberrant levels in the CRC, by which these molecules have been related with the initiation, progression, and drug-resistance of this cancer type. Numerous studies show the microRNAs influence the cellular mechanisms related to the cell cycle, differentiation, apoptosis, and migration of the cancer cells through the post-transcriptionally regulated gene expression. Specific patterns of the upregulated and down-regulated miRNA have been associated with the CRC diagnosis, prognosis, and therapeutic response. Concretely, the downregulated miRNAs represent attractive candidates, not only for the CRC diagnosis, but for the targeted therapies via the tumor-suppressing microRNA replacement. This review shows a general overview of the potential uses of the miRNAs in the CRC diagnosis, prognosis, and treatment with a special focus on the downregulated ones. [BMB Reports 2018; 51(11): 563-571].
Insights
MicroRNAs (miRNAs) show abnormal levels in colorectal cancer (CRC), impacting its development and treatment. Downregulated miRNAs are promising for CRC diagnosis and targeted therapies.
Area of Science:
- Biochemistry
- Molecular Biology
- Oncology
Background:
- Colorectal cancer (CRC) lacks specific diagnostic and therapeutic biomarkers.
- MicroRNAs (miRNAs) are small RNAs regulating gene expression and are implicated in CRC initiation, progression, and drug resistance.
Purpose of the Study:
- To review the potential applications of miRNAs in colorectal cancer diagnosis, prognosis, and treatment.
- To highlight the significance of downregulated miRNAs in CRC management.
Main Methods:
- Literature review of studies on miRNA roles in colorectal cancer.
- Analysis of miRNA expression patterns and their correlation with CRC characteristics.
Main Results:
- Aberrant miRNA levels are associated with CRC initiation, progression, and drug resistance.
- Specific miRNA expression patterns correlate with CRC diagnosis, prognosis, and therapeutic response.
- Downregulated miRNAs show potential as diagnostic markers and therapeutic targets for CRC.
Conclusions:
- MicroRNAs are crucial regulators of cellular mechanisms in colorectal cancer.
- Downregulated miRNAs represent valuable candidates for CRC diagnosis and targeted tumor-suppressing therapies.
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