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Unraveling the microRNA mosaic: mechanisms and implications in focal cortical neurodevelopmental disorders
Tao Song1,2, Chen Zhong2, Kang Xie1,2
1Departments of Neurosurgery, and National Clinical Research Center of Geriatric Disorders, Xiangya Hospital, Central South University, Changsha, China.
Abstract:
Focal cortical neurodevelopmental disorders, such as focal cortical dysplasia and tuberous sclerosis complex, are characterized by abnormal neuronal development and migration, often leading to epilepsy and cognitive deficits. Recent advances in understanding the role of microRNAs (miRNAs) have illuminated their critical involvement in the regulation of gene expression during neurodevelopment. This review explores the mechanisms by which dysregulated miRNAs contribute to the pathogenesis of these disorders, focusing on their roles in neuronal differentiation, migration, and apoptosis. We discuss specific miRNAs implicated in these processes, including their interactions with key signaling pathways such as mechanistic target of rapamycin (mTOR) and their potential as diagnostic biomarkers and therapeutic targets. By elucidating the complex regulatory networks governed by miRNAs, we aim to highlight their significance in the understanding and management of focal cortical neurodevelopmental disorders, paving the way for future research and therapeutic innovations.
Insights
MicroRNAs (miRNAs) play a crucial role in focal cortical neurodevelopmental disorders like FCD and TSC. Dysregulated miRNAs impact neuronal development, offering potential diagnostic and therapeutic targets for these conditions.
Area of Science:
- Neuroscience
- Genetics
- Developmental Biology
Background:
- Focal cortical neurodevelopmental disorders (FCD, TSC) involve abnormal neuronal development and migration, causing epilepsy and cognitive issues.
- MicroRNAs (miRNAs) are key regulators of gene expression in neurodevelopment.
Purpose of the Study:
- To explore how dysregulated miRNAs contribute to the pathogenesis of FCD and TSC.
- To identify specific miRNAs involved in neuronal differentiation, migration, and apoptosis in these disorders.
- To discuss the potential of miRNAs as biomarkers and therapeutic targets.
Main Methods:
- Literature review of studies on miRNA function in neurodevelopment.
- Analysis of miRNA interactions with signaling pathways like mTOR.
- Examination of miRNA roles in neuronal processes relevant to FCD and TSC.
Main Results:
- Dysregulated miRNAs significantly contribute to the abnormal neurodevelopment seen in FCD and TSC.
- Specific miRNAs are implicated in regulating neuronal differentiation, migration, and apoptosis.
- miRNA pathways, including mTOR signaling, are critical in these disorders.
Conclusions:
- Understanding miRNA regulatory networks is vital for comprehending focal cortical neurodevelopmental disorders.
- miRNAs represent promising biomarkers and therapeutic targets for FCD and TSC.
- Further research into miRNA mechanisms can drive innovation in managing these conditions.
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