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Updated: Dec 21, 2025

Detection of a Circulating MicroRNA Custom Panel in Patients with Metastatic Colorectal Cancer
Published on: March 14, 2019
Dual Role of microRNAs in Autophagy of Colorectal Cancer
Tanu Sharma1, James A Radosevich2, Chandi C Mandal1
1Department of Biochemistry, Central University of Rajasthan, Ajmer, Rajasthan, 305817, India.
Abstract:
Autophagy is an evolutionarily conserved pathway that eliminates unwanted proteins out of the cell and increases cell survival. However, dysfunctional autophagy is associated with cancer progression, cellular adaptation, cancer metastasis and makes it an attractive therapeutic target. MicroRNAs (miRNAs) are small single-stranded non-coding RNA molecules that usually bind to 3'UTR of mRNAs. This interaction eventually inhibits protein synthesis by repressing translation and/or by degrading mRNAs. miRNAs play a crucial role in the regulation of autophagy and also behave as both tumor suppressors and promoters in colorectal cancer. This paper defines an overall molecular view of how miRNAs regulate the dual role of autophagy in colorectal cancer. It also highlights how long noncoding RNAs modulate miRNAs expression to regulate autophagy in colorectal cancer. Thus, targeting autophagy by miRNAs seems to be a potential therapeutic strategy for colorectal cancer.
Insights
MicroRNAs (miRNAs) regulate autophagy, a cellular process involved in cancer progression and metastasis. Targeting miRNAs offers a potential therapeutic strategy for colorectal cancer by modulating this pathway.
Area of Science:
- Molecular Biology
- Oncology
- Biochemistry
Background:
- Autophagy is a conserved cellular degradation pathway crucial for cell survival.
- Dysfunctional autophagy is implicated in cancer progression, adaptation, and metastasis, making it a therapeutic target.
- MicroRNAs (miRNAs) are non-coding RNAs that regulate gene expression and play a dual role in colorectal cancer.
Purpose of the Study:
- To elucidate the molecular mechanisms by which miRNAs regulate the dual role of autophagy in colorectal cancer.
- To highlight the role of long noncoding RNAs (lncRNAs) in modulating miRNA expression and autophagy in colorectal cancer.
Main Methods:
- Literature review and molecular pathway analysis.
- Examination of miRNA-mRNA interactions in the context of autophagy.
- Analysis of lncRNA-miRNA interactions influencing autophagy.
Main Results:
- miRNAs exhibit context-dependent roles as tumor suppressors or promoters in colorectal cancer by regulating autophagy.
- Dysregulation of autophagy by miRNAs contributes to cancer progression and metastasis.
- lncRNAs can modulate miRNA expression, thereby influencing autophagy in colorectal cancer.
Conclusions:
- miRNAs are key regulators of autophagy with a significant impact on colorectal cancer.
- Targeting the miRNA-autophagy axis presents a promising therapeutic avenue for colorectal cancer treatment.
- Understanding lncRNA-mediated regulation of miRNAs in autophagy is critical for developing novel cancer therapies.
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