The RNA-binding protein NANOS1 controls hippocampal synaptogenesis
Darío Maschi1,2,3, Ana J Fernández-Alvarez1,2, Graciela Lidia Boccaccio1,2,3
1Fundación Instituto Leloir (FIL), Buenos Aires, Argentina.
Plos One
|April 14, 2023
Summary
Rat Nanos1 (NANOS1) is crucial for hippocampal neuron development. Its loss impairs synaptogenesis, affecting dendritic spine structure and function, highlighting NANOS1
Area of Science:
- Neuroscience
- Molecular Biology
- Developmental Biology
Background:
- NANOS proteins are conserved translational repressors.
- Nanos family proteins regulate gonad development.
- Nanos1 in rodents influences cortical neuron differentiation.
Purpose of the Study:
- Investigate the role of rat Nanos1 in hippocampal neuron development.
- Determine the impact of Nanos1 on synaptogenesis and neuronal function.
Main Methods:
- Utilized siRNA-mediated knockdown (KD) of Nanos1 in rat hippocampal neurons.
- Analyzed dendritic spine morphology and number.
- Examined postsynaptic density protein 95 (PSD95) and synapsin localization.
- Assessed activity-dependent induction of ARC (Activity-Regulated Cytoskeleton-associated protein).
Main Results:
- Rat Nanos1 is expressed in hippocampal neurons.
- Nanos1 KD resulted in smaller and more numerous dendritic spines.
- Loss of Nanos1 led to a higher proportion of PSD95 clusters lacking pre-synaptic counterparts.
- Nanos1 KD impaired the induction of ARC upon neuronal depolarization.
Conclusions:
- Nanos1 plays a significant role in the central nervous system (CNS) development.
- RNA regulation by NANOS1 is critical for hippocampal synaptogenesis.
- Nanos1 influences dendritic spine formation and synaptic connectivity.
Related Concept Videos
02:53Ribosomal RNA Synthesis
13.3K
Ribosome synthesis is a highly complex and coordinated process involving more than 200 assembly factors. The synthesis and processing of ribosomal components occurs not only in the nucleolus but also in the nucleoplasm and the cytoplasm of eukaryotic cells.
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
Ribosome biogenesis begins with the synthesis of 5S and 45S pre-rRNAs by distinct RNA polymerases. The primary transcripts are extensively processed and modified before they are bound and folded by ribosomal proteins and assembly factors,...
13.3K
01:20Types of RNA
5.9K
Three main types of RNA are involved in protein synthesis: messenger RNA (mRNA), transfer RNA (tRNA), and ribosomal RNA (rRNA). These RNAs perform diverse functions and can be broadly classified as protein-coding or non-coding RNA. Non-coding RNAs play important roles in regulating gene expression in response to developmental and environmental changes. Non-coding RNAs in prokaryotes can be manipulated to develop more effective antibacterial drugs for human or animal use.
RNA Performs Diverse...
RNA Performs Diverse...
5.9K
02:30siRNA - Small Interfering RNAs
16.9K
Small interfering RNAs, or siRNAs, are short regulatory RNA molecules that can silence genes post-transcriptionally, as well as the transcriptional level in some cases. siRNAs are important for protecting cells against viral infections and silencing transposable genetic elements.
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
In the cytoplasm, siRNA is processed from a double-stranded RNA, which comes from either endogenous DNA transcription or exogenous sources like a virus. This double-stranded RNA is then cleaved by the...
16.9K
01:25Nucleic Acid Structure
6.2K
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...
6.2K