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Characterization of Functionally Associated miRNAs in Glioblastoma and their Engineering into Artificial Clusters for Gene Therapy
Published on: October 4, 2019
Underlying mechanisms and clinical potential of circRNAs in glioblastoma
Lei Zhang1, Yuan Zhang1, Huijuan Gao1
1Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, Qingdao University, Qingdao, 266021, China.
Abstract:
Glioblastoma (GBM) is the most malignant form of glioma and is difficult to diagnose, leading to high mortality rates. Circular RNAs (circRNAs) are noncoding RNAs with a covalently closed loop structure. CircRNAs are involved in various pathological processes and have been revealed to be important regulators of GBM pathogenesis. CircRNAs exert their biological effects by 4 different mechanisms: serving as sponges of microRNAs (miRNAs), serving as sponges of RNA binding proteins (RBPs), modulating parental gene transcription, and encoding functional proteins. Among the 4 mechanisms, sponging miRNAs is predominant. Their good stability, broad distribution and high specificity make circRNAs promising biomarkers for GBM diagnosis. In this paper, we summarized the current understanding of the characteristics and action mechanisms of circRNAs, illustrated the underlying regulatory mechanisms of circRNAs in GBM progression and explored the possible diagnostic role of circRNAs in GBM.
Insights
Circular RNAs (circRNAs) show promise as biomarkers for glioblastoma (GBM) diagnosis. These molecules regulate GBM progression through various mechanisms, predominantly by sponging microRNAs.
Area of Science:
- Molecular Biology
- Oncology
- Genetics
Background:
- Glioblastoma (GBM) is a highly malignant brain tumor with poor prognosis.
- Diagnosis of GBM is challenging, contributing to high mortality rates.
- Circular RNAs (circRNAs) are emerging as key players in cancer development.
Purpose of the Study:
- To review the characteristics and mechanisms of circRNAs.
- To elucidate the role of circRNAs in glioblastoma pathogenesis.
- To explore the diagnostic potential of circRNAs for GBM.
Main Methods:
- Literature review and synthesis of current research on circRNAs and GBM.
- Analysis of circRNA functions including miRNA and RNA-binding protein sponging, gene transcription modulation, and protein coding.
- Evaluation of circRNA properties relevant to biomarker development (stability, distribution, specificity).
Main Results:
- CircRNAs regulate GBM progression via multiple mechanisms, with microRNA sponging being predominant.
- The stability, broad distribution, and specificity of circRNAs suggest their utility in GBM diagnosis.
- Understanding circRNA regulatory networks in GBM is crucial for developing novel diagnostic strategies.
Conclusions:
- CircRNAs are significant regulators in glioblastoma pathogenesis.
- CircRNAs hold considerable promise as diagnostic biomarkers for GBM.
- Further research into circRNA mechanisms can advance GBM diagnostics and treatment.
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