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Updated: Jun 21, 2026

Detection of a Circulating MicroRNA Custom Panel in Patients with Metastatic Colorectal Cancer
Published on: March 14, 2019
MicroRNA regulatory network in human colorectal cancer
Jie-Ting Tang1, Jing-Yuan Fang
1Shanghai Institute of Digestive Disease, Renji Hospital, Shanghai 200001, China.
Abstract:
Epigenetic modifications include DNA methylation, histone modifications, and noncoding RNAs containing microRNAs (miRNA). miRNAs are small noncoding RNAs that are 21 to 25 nt in length; they downregulate gene expression during cell development, cell proliferation, cell differentiation, and apoptosis. They play a critical role in human carcinogenesis. Presently, evidences show that miRNAs participate as oncogenic miRNAs or tumor suppressors in the developmental and physiological processes of human colorectal cancer (CRC). Disturbed miRNA expression may be attributable to a mechanism involving multiple factors. In this review, we focus on the colorectal miRNA expression profile and further discuss the miRNA regulatory network involved in the tumorigenesis of human CRC. We, thus, hope to open up new avenues for anticancer therapy based on the epigenetic regulation of miRNA.
Insights
MicroRNAs (miRNAs) are key epigenetic regulators in colorectal cancer (CRC) development. Understanding their expression and regulatory networks offers new therapeutic strategies for this common cancer.
Area of Science:
- Epigenetics
- Molecular Biology
- Oncology
Background:
- Epigenetic modifications, including DNA methylation, histone modifications, and noncoding RNAs, regulate gene expression.
- MicroRNAs (miRNAs) are small noncoding RNAs crucial for cellular processes like development, proliferation, differentiation, and apoptosis.
- miRNAs are implicated in human carcinogenesis, acting as either oncogenes or tumor suppressors in colorectal cancer (CRC).
Purpose of the Study:
- To review the expression profile of miRNAs in colorectal cancer.
- To discuss the miRNA regulatory network involved in CRC tumorigenesis.
- To explore novel anticancer therapeutic avenues based on epigenetic regulation of miRNAs.
Main Methods:
- Literature review focusing on miRNA expression profiles in CRC.
- Analysis of the regulatory network of miRNAs in colorectal cancer development.
- Synthesis of current evidence on miRNA's role in CRC tumorigenesis.
Main Results:
- miRNA expression is frequently disturbed in colorectal cancer.
- miRNAs function as both oncogenes and tumor suppressors in CRC.
- Complex regulatory networks involving miRNAs are critical in CRC pathogenesis.
Conclusions:
- Disturbed miRNA expression is a significant factor in colorectal cancer development.
- Targeting miRNA-based epigenetic mechanisms presents a promising strategy for CRC therapy.
- Further research into colorectal miRNA networks can lead to innovative anticancer treatments.
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