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Published on: October 4, 2019
Circular RNAs and glioblastoma multiforme: focus on molecular mechanisms
Raziyeh Salami1, Marziyeh Salami2, Alireza Mafi3
1Department of Clinical Biochemistry, School of Medicine, Hamedan University of Medical Sciences, Hamedan, Iran.
Abstract:
Glioblastoma multiforme (GBM), as a deadly and almost incurable brain cancer, is the most invasive form of CNS tumors that affects both children and adult population. It accounts for approximately half of all primary brain tumors. Despite the remarkable advances in neurosurgery, radiotherapy, and chemotherapeutic approaches, cell heterogeneity and numerous genetic alterations in cell cycle control, cell growth, apoptosis, and cell invasion, result in an undesirable resistance to therapeutic strategies; thereby, the median survival duration for GBM patients is unfortunately still less than two years. Identifying new therapeutics and employing the combination therapies may be considered as wonderful strategies against the GBM. In this regard, circular RNAs (circRNAs), as tumor inhibiting and/or stimulating RNA molecules, can regulate the cancer-developing processes, including cell proliferation, cell apoptosis, invasion, and chemoresistance. Hereupon, these molecules have been introduced as potentially effective therapeutic targets to defeat GBM. The current study aims to investigate the fundamental molecular and cellular mechanisms in association with circRNAs involved in GBM pathogenesis. Among multiple mechanisms, the PI3K/Akt/mTOR, Wnt/β-catenin, and MAPK signaling, angiogenic processes, and metastatic pathways will be thoroughly discussed to provide a comprehensive understanding of the role of circRNAs in pathophysiology of GBM. Video Abstract.
Insights
Circular RNAs (circRNAs) show potential as therapeutic targets for glioblastoma multiforme (GBM), a deadly brain cancer. This study explores how circRNAs influence GBM development and resistance to therapy.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Glioblastoma multiforme (GBM) is an aggressive, often incurable brain cancer with poor patient survival rates.
- Therapeutic resistance in GBM stems from cellular heterogeneity and genetic alterations affecting critical cellular processes.
- Novel therapeutic strategies, including combination therapies, are urgently needed to combat GBM.
Purpose of the Study:
- To investigate the molecular and cellular mechanisms of circular RNAs (circRNAs) in glioblastoma pathogenesis.
- To understand the role of circRNAs in regulating GBM development, proliferation, apoptosis, invasion, and chemoresistance.
- To explore circRNAs as potential therapeutic targets for GBM treatment.
Main Methods:
- Review and analysis of current literature on circRNAs and GBM.
- Discussion of signaling pathways (PI3K/Akt/mTOR, Wnt/β-catenin, MAPK) involved in circRNA-mediated GBM pathophysiology.
- Examination of circRNAs' roles in angiogenesis and metastasis in GBM.
Main Results:
- Circular RNAs (circRNAs) can act as either tumor suppressors or oncogenes in glioblastoma.
- circRNAs are implicated in regulating key cancer processes including cell proliferation, apoptosis, invasion, and chemoresistance.
- Specific signaling pathways and metastatic processes are influenced by circRNAs in GBM.
Conclusions:
- circRNAs represent promising therapeutic targets for overcoming glioblastoma resistance.
- Understanding circRNA mechanisms provides insights into GBM pathophysiology.
- Targeting circRNAs may offer novel strategies for improving GBM patient outcomes.
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