Related Experiment Video
Updated: Oct 5, 2025
09:06
Stereotactic Injection of MicroRNA-expressing Lentiviruses to the Mouse Hippocampus CA1 Region and Assessment of the Behavioral Outcome
Published on: June 10, 2013
23.1K
The role of microRNAs in learning and long-term memory
1Pavlov Institute of Physiology of the Russian Academy of Sciences, St. Petersburg, Russia.
Vavilovskii Zhurnal Genetiki I Selektsii
|January 28, 2022
Summary
MicroRNAs regulate gene networks crucial for long-term memory. Impaired microRNA biogenesis causes cognitive dysfunction, but influencing microRNAs offers therapeutic potential for memory disorders.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Long-term memory formation and its impairment present complex challenges.
- MicroRNAs (miRNAs), small non-coding RNAs, regulate gene expression networks.
- miRNAs are abundant in the central nervous system and play roles in brain function.
Purpose of the Study:
- To review the role of microRNAs in cognitive processes, particularly learning and long-term memory.
- To discuss miRNA biogenesis, gene expression regulation, and their impact on memory.
- To explore therapeutic and diagnostic applications of miRNAs in cognitive disorders.
Main Methods:
- Literature review of studies on microRNAs in synaptic plasticity and memory formation.
- Analysis of miRNA biogenesis disruption effects on cognitive functions, including sleep deprivation impacts.
- Examination of current research on modulating miRNA pathways for cognitive enhancement.
Main Results:
- Specific microRNAs are involved in synaptic plasticity and long-term memory formation.
- Disrupted miRNA biogenesis leads to cognitive deficits and is implicated in mental disorders and neurodegeneration.
- miRNA dysregulation is linked to memory impairment in conditions like senile dementia.
Conclusions:
- MicroRNAs are critical regulators of learning and memory.
- Therapeutic strategies targeting microRNAs show promise for treating cognitive impairments.
- Technologies like CRISPR/Cas9 and lifestyle interventions may modulate miRNA activity for cognitive benefits.
Related Concept Videos
01:22MicroRNAs
3.2K
MicroRNA (miRNA) are short, regulatory RNA transcribed from introns (non-coding regions of a gene) or intergenic regions (stretches of DNA present between genes). Several processing steps are required to form biologically active, mature miRNA. The initial transcript, called primary miRNA (pri-mRNA), base-pairs with itself, forming a stem-loop structure. Within the nucleus, an endonuclease enzyme, called Drosha, shortens the stem-loop structure into hairpin-shaped pre-miRNA. After the pre-miRNA...
3.2K
02:39lncRNA - Long Non-coding RNAs
9.0K
In humans, more than 80% of the genome gets transcribed. However, only around 2% of the genome codes for proteins. The remaining part produces non-coding RNAs which includes ribosomal RNAs, transfer RNAs, telomerase RNAs, and regulatory RNAs, among other types. A large number of regulatory non-coding RNAs have been classified into two groups depending upon their length – small non-coding RNAs, such as microRNA, which are less than 200 nucleotides in length, and long non-coding RNA...
9.0K
01:18Long-Term Memory
292
Long-term memory is a relatively permanent type of memory, capable of storing vast amounts of information over extended periods. Its storage capacity is generally considered unlimited.
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
Long-term memory can be categorized into two primary types: explicit and implicit memory. Explicit memory, also known as declarative memory, involves the conscious recollection of information that we deliberately try to remember, recall, and articulate. This type of memory encompasses specific facts, events, and...
292
01:25Nucleic Acid Structure
7.4K
The pentose sugar in DNA is deoxyribose, while in RNA the pentose sugar is ribose. The difference between the sugars is the presence of the hydroxyl group on the ribose's second carbon and a hydrogen on the deoxyribose's second carbon. The phosphate residue attaches to the hydroxyl group of the 5′ carbon of one sugar and the hydroxyl group of the 3′ carbon of the sugar of the next nucleotide, which forms a 5′ to 3′ phosphodiester linkage.
DNA Structure
DNA...
DNA Structure
DNA...
7.4K
01:35Long-term Potentiation
56.1K
Long-term potentiation, or LTP, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTP is the process of synaptic strengthening that occurs over time between pre- and postsynaptic neuronal connections. The synaptic strengthening of LTP works in opposition to the synaptic weakening of long-term depression (LTD) and together are the main mechanisms that underlie learning and memory.
56.1K
01:03Long-term Depression
2.7K
Long-term depression, or LTD, is one of the ways by which synaptic plasticity—changes in the strength of chemical synapses—can occur in the brain. LTD is the process of synaptic weakening that occurs over time between pre and postsynaptic neuronal connections. The synaptic weakening of LTD works in opposition to synaptic strengthening by long-term potentiation (LTP) and together are the main mechanisms that underlie learning and memory.
Calcium Ion Concentration Mechanism
If over...
Calcium Ion Concentration Mechanism
If over...
2.7K