Related Experiment Video
Updated: Aug 29, 2025

miRNA Expression Analyses in Prostate Cancer Clinical Tissues
Published on: September 8, 2015
The Importance of mir-491-5p in Various Cancers
Mahsa Fakeri1, Seyed Masoud Armandzadeh1, Samad Sadigh Olyaei1
1Department of Animal Biology, Faculty of Natural Sciences, University of Tabriz, Tabriz, Iran.
Abstract:
MicroRNAs are non-coding ribonucleic acids that are evolutionarily protected. MiRNAs control the expression of genes after transcription by mRNA decomposition or the inhibition of their translation. These molecular structures control physiological and pathological processes; therefore, many of them can play vital roles as oncogenes or tumor inhibitors. Besides, the occurrence of various mutations in miRNAs can lead to cancer. In this review article, we want to peruse the role of miR-491-5p in various cancers. In recent years, many experiments and studies have been performed on the involvement of miR-491-5p in cancer, invasion, and cell metastasis. Metastasis is an event that makes cancer more advanced and harder to treat. When cancer is invasive, the cancer cells invade nearby tissues or other organs and develop cancer. Tumor studies have shown that miR-491-5p can inhibit cell growth, invasion, and metastasis. Thus, expression enhancement of miR-491-5p disrupts cell migration and improves cancer.
Insights
MicroRNAs (miRNAs) regulate gene expression and cellular processes. This review focuses on miR-491-5p, a microRNA that inhibits cancer cell growth, invasion, and metastasis, offering therapeutic potential.
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- MicroRNAs (miRNAs) are key regulators of gene expression, influencing both physiological and pathological processes.
- Dysregulation and mutations in miRNAs are implicated in cancer development, with some acting as oncogenes or tumor suppressors.
- Metastasis, the spread of cancer cells, significantly complicates treatment and indicates advanced disease.
Approach:
- This review synthesizes current experimental and clinical studies on the role of miR-491-5p in various cancers.
- Investigates the molecular mechanisms by which miR-491-5p affects cancer cell behavior, including growth, invasion, and metastasis.
- Examines the potential of miR-491-5p as a therapeutic target or biomarker in oncology.
Key Points:
- miR-491-5p demonstrates significant tumor-suppressive activity.
- It inhibits cancer cell proliferation, invasion, and migration.
- Enhanced expression of miR-491-5p is linked to reduced cancer metastasis.
Conclusions:
- miR-491-5p plays a crucial role in suppressing cancer progression.
- Its ability to inhibit invasion and metastasis highlights its potential as an anti-cancer agent.
- Further research into miR-491-5p modulation could lead to novel cancer therapies.
Related Concept Videos
MicroRNAs
Abnormal Proliferation
lncRNA - Long Non-coding RNAs
mTOR Signaling and Cancer Progression
The mTOR pathway or the...
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Induced Pluripotent Stem Cells
Somatic...

