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The Role of Dynamic miRISC During Neuronal Development
Bharti Nawalpuri1,2, Sreenath Ravindran1,3, Ravi S Muddashetty1
1Centre for Brain Development and Repair, Institute for Stem Cell Science and Regenerative Medicine (Instem), Bangalore, India.
Frontiers in Molecular Biosciences
|March 3, 2020
Summary
MicroRNAs regulate neuronal development by controlling protein synthesis via the miRNA induced silencing complex (miRISC). Diverse miRISC compositions fine-tune neuronal circuit formation and function.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Activity-dependent protein synthesis is crucial for neuronal development and circuit formation.
- MicroRNAs (miRNAs) rapidly and specifically regulate protein synthesis, influencing neuronal plasticity.
- The miRNA induced silencing complex (miRISC) mediates these regulatory functions.
Purpose of the Study:
- To review the composition and function of miRISC during neuronal development.
- To highlight the heterogeneity of neuronal miRISC complexes.
- To discuss how miRISC dynamics influence translation regulation in neurodevelopment.
Main Methods:
- Literature review of existing studies on miRNAs, miRISC, and neuronal development.
- Analysis of the role of AGO2 and RNA-binding proteins (RBPs) in miRISC formation.
- Discussion of extracellular signals and cell-specific contexts regulating miRISC.
Main Results:
- miRISC composition is diverse, involving AGO2 and various RBPs.
- miRISC heterogeneity is regulated by external signals and cellular context.
- miRISC composition and dynamics play critical roles at distinct neurodevelopmental stages.
Conclusions:
- The heterogeneity of neuronal miRISC composition is essential for precise translation regulation during neurodevelopment.
- Understanding miRISC dynamics offers insights into fine-tuning neuronal circuit formation and function.
- Further research is needed on the functional dynamics of miRISC in neurodevelopment.
