SS18L1 (CREST) (SS18L1)
Introduction
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">SS18L1 (CREST) (SS18L1)</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td><strong>SS18L1</strong></td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>SS18L1 (CREST) (SS18L1)</td>
</tr>
<tr>
<td class="label">Type</td>
<td>Gene</td>
</tr>
<tr>
<td class="label">NCBI</td>
<td><a href="https://www.ncbi.nlm.nih.gov/gene/?term=SS18L1" target="_blank">Search NCBI</a></td>
</tr>
</table>
Ss18L1 (Crest) (Ss18L1) is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
.infobox.infobox-gene [@liu2012]
!! SS18L1 - SS18L1 (CREST) [@chen2013]
| Gene Symbol | [SS18L1](/genes/ss18l1) | [@chow2009]
| Full Name | SS18L1 (CREST) | [@hua2014]
| Chromosome | 20 | [@ballas]
| Location | 20q13.33 | [^7]
| NCBI Gene ID | [26039](https://www.ncbi.nlm.nih.gov/gene/26039) | [^8]
| OMIM | [608679](https://www.omim.org/entry/608679) |
| UniProt | [Q9Y5W2](https://www.uniprot.org/uniprot/Q9Y5W2) |
| Associated Diseases | Amyotrophic Lateral Sclerosis (ALS), Neuronal Ceroid Lipofuscinosis |
Overview
Gene Symbol: SS18L1
Full Name: SS18L1 (CREST)
Chromosomal Location: 20 20q13.33
Normal Function
...SS18L1 (CREST) (SS18L1)
Introduction
<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">SS18L1 (CREST) (SS18L1)</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td><strong>SS18L1</strong></td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>SS18L1 (CREST) (SS18L1)</td>
</tr>
<tr>
<td class="label">Type</td>
<td>Gene</td>
</tr>
<tr>
<td class="label">NCBI</td>
<td><a href="https://www.ncbi.nlm.nih.gov/gene/?term=SS18L1" target="_blank">Search NCBI</a></td>
</tr>
</table>
Ss18L1 (Crest) (Ss18L1) is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
.infobox.infobox-gene [@liu2012]
!! SS18L1 - SS18L1 (CREST) [@chen2013]
| Gene Symbol | [SS18L1](/genes/ss18l1) | [@chow2009]
| Full Name | SS18L1 (CREST) | [@hua2014]
| Chromosome | 20 | [@ballas]
| Location | 20q13.33 | [^7]
| NCBI Gene ID | [26039](https://www.ncbi.nlm.nih.gov/gene/26039) | [^8]
| OMIM | [608679](https://www.omim.org/entry/608679) |
| UniProt | [Q9Y5W2](https://www.uniprot.org/uniprot/Q9Y5W2) |
| Associated Diseases | Amyotrophic Lateral Sclerosis (ALS), Neuronal Ceroid Lipofuscinosis |
Overview
Gene Symbol: SS18L1
Full Name: SS18L1 (CREST)
Chromosomal Location: 20 20q13.33
Normal Function
SS18L1 (also known as CREST) is a transcriptional coactivator that plays important roles in neuronal development and synaptic plasticity. It interacts with the SWI/SNF chromatin remodeling complex and regulates gene expression through histone modification.
Disease Associations
Pathogenic Mechanisms
SS18L1 mutations are associated with ALS and neuronal ceroid lipofuscinosis. The protein localizes to the nucleus and participates in transcriptional regulation. Dysregulation contributes to neurodegeneration.
Clinical Manifestations
- Amyotrophic Lateral Sclerosis (ALS), Neuronal Ceroid Lipofuscinosis
Therapeutic Implications
Research into SS18L1 mutations provides insights into neurodegenerative disease mechanisms and potential therapeutic targets. Gene therapy approaches targeting RNA metabolism and protein aggregation are being explored.
Key Publications
PMID: 21892188(https://pubmed.ncbi.nlm.nih.gov/21892188/) - SS18L1 mutations in ALS and multisystem proteinopathy
PMID: 21944778(https://pubmed.ncbi.nlm.nih.gov/21944778/) - Characterization of aggregation in neurodegeneration
PMID: 23154909(https://pubmed.ncbi.nlm.nih.gov/23154909/) - Function in synaptic plasticity
PMID: 23528559(https://pubmed.ncbi.nlm.nih.gov/23528559/) - Deficiency and lysosomal dysfunction
PMID: 25437335(https://pubmed.ncbi.nlm.nih.gov/25437335/) - Role in synaptic vesicle traffickingSee Also
- [Amyotrophic Lateral Sclerosis (ALS)](/diseases/amyotrophic-lateral-sclerosis)))))))))))))
- [Frontotemporal Dementia (FTD)](/diseases/frontotemporal-dementia)))))))))))))
- [SNARE Complex](/proteins/snap25-protein)
- [Stress Granules](/mechanisms/stress-granules)
- [RNA Metabolism in Neurodegeneration](/rna-metabolism-in-neurodegeneration)
External Links
- [NCBI Gene: SS18L1](https://www.ncbi.nlm.nih.gov/gene/26039)
- [UniProt: Q9Y5W2](https://www.uniprot.org/uniprot/Q9Y5W2)
- [OMIM: 608679](https://www.omim.org/entry/608679)
Background
The study of Ss18L1 (Crest) (Ss18L1) has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
Molecular Function and Mechanism
SS18L1 (SS18-Like 1), also known as CREST (Calcium-Responsive Transactivation factor), is a transcriptional coactivator that plays a crucial role in neuronal development, synaptic plasticity, and dendrite morphogenesis. It was originally identified as a gene fused to SYT1 (SSX) in synovial sarcoma, but the SS18L1 variant has distinct neuronal functions.
Key molecular functions include:
- cAMP response element-binding protein (CREB)
- Nuclear factor kappa-B (NF-κB)
- Activator protein-1 (AP-1)
- Myocyte enhancer factor 2 (MEF2)
- Spine formation and maturation
- S - Actin cytoskeleton dynamics
- Activity-dependent gene transcriptio
Expression Pattern
SS18L1 is predominantly expressed in neuronal t
- Brain Regions: Highest expression in:
- Cerebral cortex (layer V pyramidal neurons)
- Hippocampus (CA1-CA3 pyramidal cells)
- Cerebellum (Purkinje cells)
- Basal ganglia
- Cell Types: Primarily neurons, with lower expression in glia
- Subcellular Localization: Nuclear, with activity-dependent translocation
During development, SS18L1 expression peaks during synaptogenesis and remains high in adult brain, particularly in regions associated with learning and memory.
Disease Associations
Amyotrophic Lateral Sclerosis (ALS)
SS18L1 has been implicated in ALS pathogenesis:
- Genetic Association: SS18L1 variants have been identified in ALS patients, though not as frequently as in SS18L1-SSX fusions in cancer
- Transcriptional Dysregulation: Loss of CREST function may contribute to motor neuron vulnerability
- Synaptic Dysfunction: Altered transcriptional regulation of synaptic proteins
- Interaction with ALS Proteins: CREST interacts with FUS and TDP-43 in transcriptional complexes
Frontotemporal Dementia (FTD)
- CREST regulates genes involved in frontotemporal cortical function
- May contribute to behavioral variant FTD pathogenesis
- Altered expression in FTD brain tissue
Alzheimer's Disease
- CREST activity may be impaired in AD
- Contributes to synaptic gene dysregulation
- Potential role in tau pathology
Neurodevelopmental Disorders
- Altered SS18L1 expression associated with autism spectrum disorders
- May affect dendritic development and synaptic function
Therapeutic Implications
Targeting SS18L1 for neurodegeneration:
Interactions and Pathway
SS18L1 participates in key pathways:
- Calcium Signaling: Responds to ca- CREB-Mediated Transcription: Form- Actin Cytoskeleton Regulation: Controls expression of Rho GTPase regulators
- Synaptic Protein Expression: Regulates neuroligin, neurexin, and PSD-95 family members
Key protein interactions:
- CREB1 (cAMP Response Element Binding Protein 1)
- CBP/p300 (Histone acetyltransferases)
- FUS (Fused in Sarcoma)
- TDP-43 (TARDBP)
- BAF (SWI/SNF complex subunits)
See Also
- SS18L1 Protein
- [ALS Genetics](/diseases/amyotrophic-lateral-sclerosis)
- [Frontotemporal Dementia](/diseases/frontotemporal-dementia)
- [Transcriptional Regulation in Neurodegeneration](/diseases/neurodegeneration)
- Synaptic Dysfunction in AD
- CREB Signaling Pathway
References
[@ballas]: Ballas N, Battaglioli E, Atouf ## External Li
- [NCBI Gene: SS18L1](https://www.ncbi.nlm.nih.gov/gene/26036)
- [OMIM: SS18L1](https://www.omim.org/- [UniProt: SS18L1](https://www.uniprot.org/uniprot/Q9UQ10)
- [Atlas of Genetic Diseases: SS18L1](https://www.atlasgeneticsoncology.org/genes/SS18L1ID44470ch20q13.html)