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Updated: Sep 23, 2025

Characterization of Functionally Associated miRNAs in Glioblastoma and their Engineering into Artificial Clusters for Gene Therapy
Published on: October 4, 2019
Functional mechanism and clinical implications of miR-141 in human cancers
Qi-Qi Luo1, Yu Tian1, Guang-Jin Qu1
1Department of Gerontology, First Affiliated Hospital of Harbin Medical University, Harbin 150001, PR China.
Abstract:
Cancer is caused by the abnormal proliferation of local tissue cells under the control of many oncogenic factors. MicroRNAs (miRNAs) are a class of evolutionarily conserved, approximately 22-nucleotide noncoding small RNAs that influence transcriptional regulationby binding to the 3'-untranslated region of target messenger RNA. As a member of the miRNA family, miR-141 acts as a suppressor or an oncomiR in various cancers and regulates cancer cell proliferation, apoptosis, invasion, and metastasis through a variety of signaling pathways, such as phosphatidylinositol-3-kinase (PI3K)/protein kinase B (AKT) and constitutive activation of nuclear factor-κB (NF-κB). Target gene validation and pathway analysis have provided mechanistic insight into the role of this miRNA in different tissues. This review also outlines novel findings that suggest miR-141 may be useful as a noninvasive biomarker and as a therapeutic target in several cancers.
Insights
MicroRNAs (miRNAs) regulate cancer growth. This review highlights miR-141
Area of Science:
- Molecular Biology
- Genetics
- Cancer Research
Background:
- Cancer arises from uncontrolled cell growth driven by oncogenic factors.
- MicroRNAs (miRNAs) are small noncoding RNAs regulating gene expression post-transcriptionally.
- miRNAs bind to messenger RNA targets, influencing protein production and cellular functions.
Purpose of the Study:
- To review the multifaceted role of miR-141 in various cancers.
- To elucidate the regulatory mechanisms and signaling pathways affected by miR-141.
- To explore the potential of miR-141 as a cancer biomarker and therapeutic target.
Main Methods:
- Literature review of studies investigating miR-141.
- Analysis of target gene validation and pathway analysis data.
- Synthesis of findings on miR-141's function in cancer cell proliferation, apoptosis, invasion, and metastasis.
Main Results:
- miR-141 functions as either a tumor suppressor or an oncomiR depending on the cancer type.
- It modulates key cancer-related pathways, including PI3K/AKT and NF-κB signaling.
- Mechanistic insights reveal miR-141's impact on cellular processes critical to cancer progression.
Conclusions:
- miR-141 plays a significant, context-dependent role in cancer development and progression.
- Understanding its regulatory functions provides mechanistic insights into oncogenesis.
- miR-141 shows promise as a noninvasive biomarker and a potential therapeutic strategy for cancer treatment.
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