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A hypothesis about interrelations of epigenetic factors and transposable elements in memory formation
1Bashkir State Medical University, Ufa, Russia.
Vavilovskii Zhurnal Genetiki I Selektsii
|September 16, 2024
Summary
Transposable elements, or "jumping genes," drive epigenetic regulation in brain memory formation. These elements are implicated in neurodegenerative diseases and may offer new therapeutic targets for memory enhancement.
Area of Science:
- Neuroscience
- Epigenetics
- Genetics
Background:
- Memory formation involves complex epigenetic regulation.
- Transposable elements (TEs) are mobile genetic sequences.
- The role of TEs in cognitive processes is an emerging area of research.
Purpose of the Study:
- To review the hypothesis that TEs drive epigenetic regulation in memory formation.
- To explore the role of TEs in neuronal differentiation and gene expression.
- To investigate the potential of TEs and their derivatives as therapeutic targets for memory disorders.
Main Methods:
- Review of scientific literature on TEs, epigenetics, and memory.
- Analysis of transposon activity in neuronal stem cells and the hippocampus.
- Examination of experimental data involving epigenetic factor manipulation (histone acetyltransferase, DNA methyltransferase, reverse transcriptase).
- Investigation of TE-derived proteins, long non-coding RNAs, and microRNAs in memory.
Main Results:
- TE activation and insertion near neuron-specific genes are observed in the hippocampus.
- Epigenetic modifications and retroelements are involved in memory mechanisms.
- Long-term memory can be preserved independently of synaptic plasticity.
- TEs contribute to memory formation at the nuclear coding level.
- TE-derived molecules (proteins, ncRNAs, miRNAs) play roles in memory consolidation.
- Altered expression of TE-derived microRNAs is linked to Alzheimer's disease.
Conclusions:
- Transposable elements are key drivers of epigenetic regulation in memory formation.
- TEs influence gene expression in the brain and are involved in memory consolidation.
- Dysregulated TE activity is associated with neurodegenerative diseases.
- TE-derived microRNAs show potential as biomarkers and therapeutic targets for memory impairment.
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