Related Experiment Video
Updated: Jun 20, 2025

Genome-wide Screen for miRNA Targets Using the MISSION Target ID Library
Published on: April 6, 2012
Role of miRNA‑122 in cancer (Review)
Jing Zhang1, Linghua Wu2, Rong Ding1
1Department of Respiratory Medicine, Taizhou Fourth People's Hospital, Taizhou, Jiangsu 225300, P.R. China.
Abstract:
MicroRNAs (miRNAs) are small non‑coding RNAs that serve key roles in cell proliferation, migration, invasion and apoptosis by regulating gene expression. In malignant tumors, miRNA‑122 serves either as a tumor suppressor or oncogene, influencing tumor progression via downstream gene targeting. However, the precise role of miRNA‑122 in cancer remains unclear. miRNA‑122 is a potential biomarker and modulator of radiotherapy and chemotherapy. The present review aimed to summarize the roles of miRNA‑122 in cancer, its potential as a biomarker for diagnosis and prognosis and its implications in cancer therapy, including radiotherapy and chemotherapy, alongside strategies for systemic delivery.
Insights
MicroRNA-122 (miRNA-122) plays a complex role in cancer, acting as both a tumor suppressor and oncogene. This review explores its functions, diagnostic potential, and therapeutic implications in cancer treatment.
Area of Science:
- Molecular Biology
- Genetics
- Oncology
Background:
- MicroRNAs (miRNAs) are small non-coding RNAs regulating gene expression.
- miRNA-122's role in cancer is dual, acting as a tumor suppressor or oncogene.
- Its precise function in tumor progression requires further elucidation.
Purpose of the Study:
- To review the multifaceted roles of miRNA-122 in various cancers.
- To assess miRNA-122 as a potential biomarker for cancer diagnosis and prognosis.
- To explore miRNA-122's implications in radiotherapy and chemotherapy.
Main Methods:
- Literature review of studies on miRNA-122 in cancer.
- Analysis of miRNA-122's gene-targeting mechanisms.
- Evaluation of its potential as a therapeutic agent and biomarker.
Main Results:
- miRNA-122 influences cell proliferation, migration, invasion, and apoptosis.
- It shows potential as a biomarker for early cancer detection and predicting patient outcomes.
- miRNA-122 can modulate responses to radiotherapy and chemotherapy.
Conclusions:
- miRNA-122 is a significant factor in cancer development and progression.
- It holds promise as a diagnostic and prognostic biomarker.
- Targeting miRNA-122 or utilizing it as a therapeutic agent warrants further investigation for cancer treatment strategies.
Related Concept Videos
MicroRNAs
lncRNA - Long Non-coding RNAs
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
Experimental RNAi
Abnormal Proliferation
siRNA - Small Interfering RNAs
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...

