SS18L1 (CREST) (SS18L1)

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SS18L1 (CREST) (SS18L1)

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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.

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.

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 trafficking

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)

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)

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Related Entities

SS18L1

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📊 Evidence Profile

Evidence Balance

+0%

Certainty

40%

Debates

0

Incoming

8

Outgoing

15

0 supporting 0 contradicting 0 neutral

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📗 Cite This Artifact

SS18L1 (CREST) (SS18L1)

SS18L1 (CREST) (SS18L1)

Introduction

Overview

Normal Function

SS18L1 (CREST) (SS18L1)

Introduction

Overview

Normal Function

Disease Associations

Pathogenic Mechanisms

Clinical Manifestations

Therapeutic Implications

Key Publications

See Also

External Links

Background

Molecular Function and Mechanism

Expression Pattern

Disease Associations

Amyotrophic Lateral Sclerosis (ALS)

Frontotemporal Dementia (FTD)

Alzheimer's Disease

Neurodevelopmental Disorders

Therapeutic Implications

Interactions and Pathway

See Also

References

💬 Discussion