GO:0099563 modification of synaptic structure: Synapse Remodeling, Genes, Functions and Research Methods
Research-grade guide for scientists and biopharma professionals
Key Takeaways
• GO:0099563 (modification of synaptic structure) is the biological process that changes the morphology of a synapse, also called synapse remodelling.
• Synaptic structural modification underlies neuroplasticity, learning, memory, and recovery after injury.
• It is driven by cytoskeletal rearrangement, post-translational modifications, and activity-dependent gene expression.
• Dysregulation of synaptic structure is linked to Alzheimer's disease, chronic stress, ischemia, and other neurological disorders.
• Key experimental approaches include imaging of dendritic spines, electrophysiology, proteomics, and CRISPR-based gene editing.
• EDITGENE provides knockout, point-mutation, knock-in, overexpression cell models and CRISPR library screening to study synaptic structure genes.
Description
Modification of synaptic structure (GO:0099563) is a biological process that alters the morphology of a synapse, the specialized junction between neurons. This process, often called synapse remodelling, is a cornerstone of neuroplasticity and allows neural circuits to adapt to experience, injury, and disease. Researchers study it because structural changes at synapses correlate with functional changes in synaptic transmission and are implicated in learning, memory, and neurological disorders. The QuickGO definition states that it is any process that modifies the structure or morphology of a synapse. This article integrates authoritative GO annotation with real PubMed literature to provide a research-grade overview of the genes, mechanisms, and methods used to investigate GO:0099563.
modification of synaptic structure At A Glance
| GO ID | GO:0099563 |
|---|---|
| GO term | modification of synaptic structure |
| Ontology | biological_process |
| Synonym | synapse remodelling |
| Major function | Activity-dependent alteration of synaptic morphology underlying neuroplasticity |
| Related processes | Cytoskeletal reorganization, receptor trafficking, post-translational modifications |
| Disease relevance | Alzheimer's disease, chronic stress, ischemia, and other neurological conditions |
| Key experimental readouts | Dendritic spine density, synaptic protein localization, electrophysiology |
What Is GO:0099563?
In simple terms, modification of synaptic structure is the set of cellular events that reshape the physical connections between neurons. According to QuickGO, GO:0099563 encompasses any process that modifies the structure or morphology of a synapse, including changes in size, shape, number, or molecular composition of pre- and post-synaptic compartments. This process is distinct from synaptic transmission itself, although structural changes often accompany functional plasticity.
Why Is modification of synaptic structure Important in Cell Biology?
Modification of synaptic structure is essential for brain function because it provides the physical substrate for learning, memory, and adaptation. Disruptions in this process are observed in numerous neurological and psychiatric disorders, making it a critical area of research for understanding disease mechanisms and developing therapies.
• Underlies neuroplasticity and experience-dependent circuit refinement.
• Required for learning and memory consolidation.
• Mediates recovery and rewiring after brain injury or ischemia.
• Dysregulated in Alzheimer's disease and other neurodegenerative conditions.
• Affected by chronic stress, leading to prefrontal cortex structural changes.
• Involves post-translational modifications that regulate synaptic protein function.
• Provides targets for therapeutic intervention in neurological disorders.
• Can be studied with advanced imaging, proteomics, and CRISPR-based models.
What Happens During modification of synaptic structure?
Initiation by neuronal activity
In simple terms: When neurons are active, they send signals that start the process of changing synapse shape.
Synaptic structural modification is often initiated by patterns of neuronal activity that trigger intracellular signaling cascades. These signals converge on cytoskeletal regulators and cell adhesion molecules to begin remodelling.
Cytoskeletal reorganization
In simple terms: The internal skeleton of the neuron rearranges to change the shape of the synapse.
Actin filaments and associated proteins dynamically reorganize to alter dendritic spine morphology and presynaptic terminal structure. This reorganization is regulated by signaling pathways downstream of synaptic receptors.
Post-translational modifications of synaptic proteins
In simple terms: Chemical tags are added to or removed from proteins, changing their location and function at the synapse.
Palmitoylation and depalmitoylation cycles regulate the trafficking and stability of synaptic proteins, including receptors and scaffolding molecules. Other modifications such as phosphorylation and oxidation also modulate synaptic structure.
Receptor trafficking and stabilization
In simple terms: Receptors move in and out of the synapse, strengthening or weakening the connection.
AMPA receptors undergo activity-dependent trafficking that is tightly linked to structural changes at the postsynaptic density. Post-translational modifications of these receptors influence their synaptic retention and thus synapse stability.
Autophagy and lysosomal degradation
In simple terms: The cell's recycling system removes damaged components to maintain synapse health.
Ischemia-induced upregulation of autophagy can lead to dysfunctional lysosomal storage and associated synaptic impairments, highlighting the role of degradative pathways in synaptic structure maintenance.
Key Genes Involved in GO:0099563 modification of synaptic structure
The following genes and proteins are central to the regulation and execution of modification of synaptic structure, based on published literature.
| Gene | Major Role | Research Relevance |
|---|---|---|
| GAPDH | Moonlighting enzyme with post-translational modifications affecting synaptic function | Model for studying PTM-driven synaptic changes |
| APOE | Lipid transport and synaptic maintenance | Linked to Alzheimer's disease synaptic disorder |
| BDNF | Neurotrophic factor promoting synaptic plasticity | Key regulator of structural remodelling |
| ARC | Activity-regulated cytoskeleton-associated protein | Immediate early gene involved in spine remodelling |
| GRIA1 | AMPA receptor subunit | Trafficking and stabilization at synapses |
| GRIA2 | AMPA receptor subunit | Regulates calcium permeability and synaptic strength |
| DLG4 | Postsynaptic scaffolding protein (PSD-95) | Organizes postsynaptic density structure |
| ZDHHC | Palmitoyl acyltransferases | Regulate synaptic protein palmitoylation |
| PPT1 | Palmitoyl-protein thioesterase | Depalmitoylation and lysosomal function |
| MAP1B | Microtubule-associated protein | Cytoskeletal dynamics in synaptic remodelling |
| ACTB | Beta-actin | Core component of dendritic spine cytoskeleton |
| CAMK2A | Calcium/calmodulin-dependent protein kinase II | Signaling hub for structural plasticity |
| SYP | Synaptophysin | Presynaptic vesicle marker for structural studies |
| PSD95 | Postsynaptic density protein 95 | Marker of postsynaptic structure |
| GFAP | Astrocyte marker | Glial contribution to synaptic structure |
| SIRT1 | NAD-dependent deacetylase | Epigenetic regulator of synaptic genes |
| DNMT1 | DNA methyltransferase | Epigenetic modification in synaptic disorders |
How Is modification of synaptic structure Regulated?
Modification of synaptic structure is regulated by a complex interplay of activity-dependent signaling, post-translational modifications, and epigenetic mechanisms. Palmitoylation cycles controlled by palmitoyl acyltransferases and depalmitoylases dynamically regulate synaptic protein localization and stability. Epigenetic enzymes such as DNA methyltransferases and histone deacetylases modulate the expression of genes involved in synaptic structure. Additionally, autophagy and lysosomal pathways influence synaptic integrity under stress conditions such as ischemia.
modification of synaptic structure and Human Disease
| Gene | Disease / Biology | Potential Experimental Model |
|---|---|---|
| APOE | Alzheimer's disease | Knock-in mouse models or iPSC-derived neurons |
| BDNF | Neuropsychiatric disorders | Knockout and overexpression cell models |
| GRIA1 | Epilepsy and synaptic disorders | Point mutation knock-in models |
| PPT1 | Neuronal ceroid lipofuscinosis | Knockout cell lines for palmitoylation studies |
| SIRT1 | Neurodegeneration | Overexpression and knockout models |
Alzheimer's disease
Alzheimer's disease is characterized by synaptic dysfunction and loss, with epigenetic regulation of synaptic disorder playing a key role. Structural modifications of synapses are impaired, contributing to cognitive decline.
Chronic stress and prefrontal cortex
Chronic stress induces neuroplasticity changes in the prefrontal cortex, including structural modifications of synapses that affect cognitive function and emotional regulation.
Ischemia and synaptic impairment
Ischemia-induced upregulation of autophagy leads to dysfunctional lysosomal storage and associated synaptic impairments, demonstrating how metabolic stress disrupts synaptic structure.
From modification of synaptic structure-Related Genes to Experimental Models
| Research Question | Suitable Model |
|---|---|
| Does gene X regulate dendritic spine density? | Knockout cell model (e.g., primary neurons) |
| How does a disease-associated point mutation affect synaptic structure? | Point mutation knock-in cell line |
| What is the effect of tagging a synaptic protein on its localization? | Tagged knock-in (e.g., GFP) |
| Does overexpression of gene Y alter synapse morphology? | Overexpression cell model |
| Which genes are essential for synaptic remodelling? | CRISPR library screening |
| How does chronic stress affect synaptic structure? | In vivo stress models with imaging |
How to Study the modification of synaptic structure Process
| Method | What It Measures | Typical Application |
|---|---|---|
| Confocal microscopy | Dendritic spine density and morphology | Assessment of structural plasticity |
| Electrophysiology | Synaptic transmission strength | Functional correlation with structure |
| Proteomics | Synaptic protein abundance and modifications | Identification of PTM changes |
| CRISPR screening | Gene requirement for synaptic structure | Discovery of novel regulators |
| Western blot | Protein expression levels | Validation of knockout/overexpression |
| Immunohistochemistry | Synaptic protein localization | Tissue-level structural analysis |
| RNA-seq | Transcriptional changes | Gene expression profiling in models |
Imaging of dendritic spines
Confocal or two-photon microscopy of fluorescently labeled neurons allows quantification of spine density, size, and shape as readouts of synaptic structural modification.
Electrophysiology
Patch-clamp recordings measure synaptic transmission strength, which correlates with structural changes at synapses.
Proteomics and post-translational modification analysis
Mass spectrometry-based proteomics identifies changes in synaptic protein composition and modifications such as palmitoylation.
CRISPR-based genetic screens
Pooled CRISPR screens can identify genes that regulate synaptic structure when combined with imaging or survival assays.
How CRISPR Can Be Used to Study GO:0099563 modification of synaptic structure
Knockout
CRISPR knockout cell models eliminate a gene of interest to determine its necessity for synaptic structure. For example, knocking out BDNF or GRIA1 can reveal their roles in dendritic spine maintenance.
Point Mutation
Point mutation knock-in models introduce specific disease-associated variants to study their impact on synaptic morphology. This is particularly useful for genes like GRIA1 where missense mutations affect receptor trafficking.
Knock-in
Knock-in of reporter tags (e.g., GFP) allows real-time visualization of synaptic proteins in live cells, facilitating dynamic studies of structural remodelling.
Overexpression
Overexpression models drive supraphysiological levels of a gene to test sufficiency in promoting synaptic structural changes, such as with BDNF or CAMK2A.
How EDITGENE Supports modification of synaptic structure Research
Researchers studying modification of synaptic structure-related genes often need to determine whether a candidate gene is causally involved in synaptic remodelling or merely correlated with it. This requires precise genetic manipulation and functional readouts. EDITGENE provides a comprehensive suite of CRISPR-based services to accelerate such investigations.
Contact EDITGENE today to design your custom CRISPR model for modification of synaptic structure research.
Related Products
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Frequently Asked Questions About modification of synaptic structure
What is GO:0099563 modification of synaptic structure?
GO:0099563 is a Gene Ontology biological process term defined as any process that modifies the structure or morphology of a synapse, also known as synapse remodelling.
What genes are involved in modification of synaptic structure?
Key genes include BDNF, ARC, GRIA1, GRIA2, DLG4, CAMK2A, and others involved in cytoskeletal dynamics and receptor trafficking.
How is synaptic structure modified?
It is modified through activity-dependent signaling, cytoskeletal reorganization, post-translational modifications, and receptor trafficking.
Why is modification of synaptic structure important?
It underlies neuroplasticity, learning, memory, and recovery from injury, and its dysregulation is linked to neurological disorders.
What diseases are associated with abnormal synaptic structure?
Alzheimer's disease, chronic stress-related disorders, and ischemia-induced synaptic impairment are associated with abnormal synaptic structure.
How can I study modification of synaptic structure in the lab?
Common methods include imaging of dendritic spines, electrophysiology, proteomics, and CRISPR-based genetic screens.
What is the role of palmitoylation in synaptic structure?
Palmitoylation and depalmitoylation cycles regulate the trafficking and stability of synaptic proteins, influencing structural remodelling.
Can CRISPR be used to study synaptic structure?
Yes, CRISPR knockout, knock-in, point mutation, and overexpression models are powerful tools to dissect gene function in synaptic remodelling.
What is the synonym for modification of synaptic structure?
The synonym is synapse remodelling.
How does autophagy affect synaptic structure?
Ischemia-induced autophagy can lead to lysosomal dysfunction and synaptic impairments, showing the importance of degradative pathways.
Conclusion
Modification of synaptic structure (GO:0099563) is a fundamental biological process that shapes neural circuits and underlies cognitive function. Its dysregulation contributes to major neurological disorders, making it a critical research focus. By leveraging CRISPR-based models and advanced imaging, researchers can uncover the genes and mechanisms driving synaptic remodelling. EDITGENE offers comprehensive services to support these investigations, from knockout and knock-in models to library screening and bioinformatics.
References
- 1. Gazerani P. 2025. The neuroplastic brain: current breakthroughs and emerging frontiers.. Brain Res 1858:149643 PMID: 40280532
- 2. Zhang X et al.. 2021. Ischemia-induced upregulation of autophagy preludes dysfunctional lysosomal storage and associated synaptic impairments in neurons.. Autophagy 17(6):1519-1542 PMID: 33111641
- 3. Sirover MA. 2021. The role of posttranslational modification in moonlighting glyceraldehyde-3-phosphate dehydrogenase structure and function.. Amino Acids 53(4):507-515 PMID: 33651246
- 4. Won SJ et al.. 2018. Protein depalmitoylases.. Crit Rev Biochem Mol Biol 53(1):83-98 PMID: 29239216
- 5. Algaidi SA. 2025. Chronic stress-induced neuroplasticity in the prefrontal cortex: Structural, functional, and molecular mechanisms from development to aging.. Brain Res 1851:149461 PMID: 39864644
- 6. Chen Z et al.. 2022. Epigenetic regulation of synaptic disorder in Alzheimer's disease.. Front Neurosci 16:888014 PMID: 35992921
- 7. Xu X et al.. 2007. Effects of puerarin on synaptic structural modification in hippocampus of ovariectomized mice.. Planta Med 73(10):1047-53 PMID: 17628835
- 8. Corti E et al.. 2023. The role of post-translational modifications in synaptic AMPA receptor activity.. Biochem Soc Trans 51(1):315-330 PMID: 36629507
