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Updated: Apr 19, 2026

Detection of a Circulating MicroRNA Custom Panel in Patients with Metastatic Colorectal Cancer
Published on: March 14, 2019
MicroRNAs in colorectal cancer: small molecules with big functions
Yu Xuan1, Huiliang Yang2, Linjie Zhao2
1Department of Gynecology and Obstetrics, Key Laboratory of Obstetrics & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second Hospital, Sichuan University, Chengdu 610041, China; The State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
Abstract:
Colorectal cancer (CRC) is the third most lethal malignancy, with pathogenesis intricately dependent upon microRNAs (miRNAs). miRNAs are short, non-protein coding RNAs, targeting the 3'-untranslated regions (3'-UTR) of certain mRNAs. They usually serve as tumor suppressors or oncogenes, and participate in tumor phenotype maintenance. Therefore, miRNAs consequently regulate CRC carcinogenesis and other biological functions, including apoptosis, development, angiogenesis, migration, and proliferation. Due to its differential expression and distinct stability, miRNAs are regarded as molecular biomarkers (for diagnosis/prognosis) and therapeutic targets for CRC. Recently, a remarkable number of miRNAs have been discovered with implications via incompletely understood mechanisms in CRC. As further study of relevant miRNAs continues, it is hopeful that novel miRNA-based therapeutic strategies may be available for CRC patients in the future.
Insights
MicroRNAs (miRNAs) play a crucial role in colorectal cancer (CRC) development and progression. Understanding these molecules offers potential for novel diagnostic biomarkers and therapeutic strategies for CRC.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- Colorectal cancer (CRC) is a leading cause of cancer death.
- MicroRNAs (miRNAs) are key regulators of gene expression involved in cancer.
- miRNAs function as either tumor suppressors or oncogenes in CRC pathogenesis.
Purpose of the Study:
- To explore the role of microRNAs (miRNAs) in colorectal cancer (CRC).
- To highlight miRNAs as potential biomarkers and therapeutic targets for CRC.
Main Methods:
- Literature review on miRNA involvement in CRC.
- Analysis of miRNA targeting mechanisms (3'-UTR of mRNAs).
- Examination of miRNA roles in cancer hallmarks (apoptosis, angiogenesis, etc.).
Main Results:
- miRNAs are differentially expressed and stable in CRC.
- miRNAs regulate critical biological functions in CRC, including proliferation and migration.
- Numerous miRNAs show implications in CRC through incompletely understood mechanisms.
Conclusions:
- miRNAs are integral to CRC pathogenesis and progression.
- miRNAs hold significant promise as molecular biomarkers for CRC diagnosis and prognosis.
- Further research into miRNAs may lead to innovative miRNA-based therapeutic strategies for colorectal cancer patients.
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