ELAVL1 Gene

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ELAVL1 Gene

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ELAVL1 Gene

Overview

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ELAVL1 Gene

Overview

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<table class="infobox infobox-gene">
<tr>
<th class="infobox-header" colspan="2">ELAVL1 Gene</th>
</tr>
<tr>
<td class="label">Symbol</td>
<td><strong>ELAVL1</strong></td>
</tr>
<tr>
<td class="label">Full Name</td>
<td>ELAVL1</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=ELAVL1" target="_blank">Search NCBI</a></td>
</tr>
<tr>
<td class="label">Associated Diseases</td>
<td><a href="/wiki/als" style="color:#ef9a9a">Als</a>, <a href="/wiki/cancer" style="color:#ef9a9a">Cancer</a>, <a href="/wiki/carcinoma" style="color:#ef9a9a">Carcinoma</a>, <a href="/wiki/fibrosis" style="color:#ef9a9a">Fibrosis</a>, <a href="/wiki/hepatocellular-carcinoma" style="color:#ef9a9a">Hepatocellular Carcinoma</a></td>
</tr>
<tr>
<td class="label">KG Connections</td>
<td><a href="/atlas" style="color:#4fc3f7">67 edges</a></td>
</tr>
</table>

ELAVL1 (ELAV Like RNA Binding Protein 1), also known as HuR (Hu Antigen R), is a member of the ELAV (Embryonic Lethal Abnormal Vision) family of RNA-binding proteins. This gene encodes a widely expressed RNA-binding protein that plays critical roles in post-transcriptional gene regulation by binding to adenine-uridine-rich elements (AU-rich elements, AREs) in the 3' untranslated regions (UTRs) of target mRNAs["@abdelmohsen2008"]. Through these interactions, HuR stabilizes messenger RNAs, regulates their translation, influences alternative splicing, and controls mRNA localization within cells.

In the nervous system, ELAVL1 is particularly important for maintaining neuronal function, regulating synaptic plasticity, and responding to cellular stress. Dysregulation of HuR expression and function has been implicated in several neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), and amyotrophic lateral sclerosis (ALS)[@brennerg2015]. The protein's ability to modulate the stability and translation of transcripts involved in key disease pathways makes it a significant player in neurodegeneration research.

Gene and Protein Structure

Gene Organization

The human ELAVL1 gene is located on chromosome 19p13.2 and spans approximately 6.5 kilobases. The gene consists of 10 exons that encode a protein of 326 amino acids with a molecular weight of approximately 36 kDa. The gene structure is conserved across mammals, with particular conservation in the RNA-binding domains.

Protein Domains

ELAVL1/HuR contains three RNA-binding domains (RBDs), each of the HNP (huA/PNC) type:

N-terminal RNA-binding domain (RBD1): Involved in low-affinity binding and protein-protein interactions

Central RNA-binding domain (RBD2): The highest affinity binding site for AU-rich elements

C-terminal RNA-binding domain (RBD3): Facilitates cooperative binding and mRNA stabilization

Each RBD consists of approximately 90 amino acids arranged in a classical RNA recognition motif (RRM) fold. The C-terminal region also contains a hinge region that allows flexibility between the RBDs, enabling cooperative binding to target mRNAs.

Post-Translational Modifications

HuR undergoes several post-translational modifications that regulate its activity:

Phosphorylation: By multiple kinases including Chk2, PKC, and CDK1, affecting its subcellular localization and RNA binding activity[@lee2020]
Methylation: Arginine methylation by PRMT1 modulates RNA binding affinity
Acetylation: Lysine acetylation influences protein-protein interactions
Sumoyylation: Affects nuclear-cytoplasmic shuttling
m6A modification: m6A modification of HuR mRNA influences its own function[@fan2019]

Biological Functions

mRNA Stabilization

HuR's primary function is to bind to AU-rich elements (AREs) in the 3' UTR of target mRNAs, protecting them from degradation by exonucleases[@kurosaki2019]. This stabilization is crucial for the regulated expression of many genes involved in:

Stress responses: Immediate-early genes like c-Fos, c-Myc
Inflammatory mediators: TNF-α, IL-2, IL-6, IL-8
Cell cycle regulators: p21, cyclins
Anti-apoptotic proteins: Bcl-2, Mcl-1, XIAP

Translation Regulation

Beyond stabilization, HuR can either enhance or repress translation of target mRNAs depending on the context:

Translation enhancement: Through interaction with translation initiation factors
Translation repression: Via competition with translation machinery
Alternative polyadenylation: Influencing the length of 3' UTRs and thus regulatory potential[@chang2021]

Subcellular Localization

HuR exhibits nucleocytoplasmic shuttling, which is essential for its function:

Nuclear localization: Where it processes pre-mRNAs and assembles into ribonucleoprotein complexes
Cytoplasmic export: In response to cellular stress, HuR translocates to cytoplasm to stabilize specific mRNAs
Stress granule formation: During cellular stress, HuR localizes to stress granules containing translationally stalled mRNAs[@zhang2018]

Expression in the Nervous System

Cellular Distribution

ELAVL1 is highly expressed in neurons throughout the central and peripheral nervous systems:

Neuronal soma: Particularly abundant in the cytoplasm of pyramidal neurons in the cortex and hippocampus
Dendrites: Localized to dendritic compartments where it regulates local translation
Synaptic terminals: Present at synapses where it modulates synaptic plasticity
Glial cells: Expressed in astrocytes and microglia, though at lower levels than neurons

Brain Region Expression

High expression is observed in:

[Hippocampus](/brain-regions/hippocampus) — CA1-CA3 regions and dentate gyrus
Cerebral [cortex](/brain-regions/cortex) — layers II-VI, particularly layer V pyramidal neurons
[Cerebellum](/brain-regions/cerebellum) — Purkinje cells and granule cells
[Substantia nigra](/brain-regions/substantia-nigra) — dopaminergic neurons
[Suprachiasmatic nucleus](/brain-regions/suprachiasmatic-nucleus) — circadian rhythm regulation[@de2021]

Role in Neurodegenerative Diseases

Alzheimer's Disease

ELAVL1 is significantly implicated in AD pathophysiology through multiple mechanisms[@papadaki2022]:

Amyloid-beta metabolism:

HuR regulates alternative polyadenylation of [APP](/genes/app) mRNA, affecting amyloid-beta production[@chang2021]
Stabilizes transcripts encoding proteins involved in amyloid processing
Altered HuR expression in AD brain correlates with amyloid burden

Tau pathology:

HuR stabilizes [MAPT](/genes/mapt) mRNA, influencing tau protein expression[@wang2019]
Regulates alternative splicing of tau exon 6, affecting tau isoform ratios[@van2018]
Elevated HuR in AD brain correlates with tau pathology

Synaptic dysfunction:

Loss of nuclear HuR impairs synaptic plasticity in aging neurons[@kato2018]
HuR-mediated stabilization of synaptic protein mRNAs is disrupted
Contributes to memory deficits

Autophagy:

HuR stabilizes [ATG5](/entities/atg5) protein to facilitate autophagy[@li2020]
Dysregulated autophagy in AD may involve altered HuR function

Parkinson's Disease

In PD, ELAVL1 is involved in several disease mechanisms[@yang2021]:

Oxidative stress response:

HuR responds to oxidative stress in dopaminergic neurons
Stabilizes mRNAs encoding antioxidant proteins
Loss of HuR function contributes to vulnerability to oxidative damage

Mitochondrial dysfunction:

Regulates mRNAs involved in mitochondrial dynamics
Altered HuR activity contributes to mitochondrial dysfunction
Interaction with PINK1 and Parkin pathways

Alpha-synuclein:

HuR may regulate [SNCA](/genes/snca) mRNA stability
Stress granule formation involving HuR in Lewy body pathology

Amyotrophic Lateral Sclerosis

ELAVL1 plays a significant role in ALS[@brennerg2015]:

RNA metabolism dysregulation:

Altered binding to target mRNAs in motor neurons
Dysregulated mRNA processing contributes to motor neuron degeneration

Stress granule formation:

Abnormal stress granule formation in motor neurons[@srikantan2012]
Interaction with TDP-43 (TARDBP) pathology[@das2019]
Sequestration of HuR into pathological granules

Motor neuron degeneration:

Disrupted RNA processing leads to neuronal dysfunction
Loss of neurotrophic factor mRNA stabilization[@sakao2020]

Molecular Mechanisms

Stress Response Pathways

HuR is a key mediator of cellular stress responses:

Heat shock response: HuR translocates to cytoplasm to stabilize stress-responsive mRNAs

Oxidative stress: Protects mRNAs encoding antioxidant enzymes

Nutrient deprivation: Regulates autophagy-related mRNAs

DNA damage: Modulates expression of DNA repair proteins

Signaling Pathways

HuR activity is regulated by several signaling pathways:

p38 MAPK: Phosphorylates HuR, enhancing cytoplasmic translocation
ATM/Chk2: In response to DNA damage, phosphorylates HuR
PKC: Regulates HuR nuclear export
mTOR: Modulates HuR-mediated translation

Interaction with Other RBPs

HuR interacts with other RNA-binding proteins:

TDP-43 (TARDBP): Co-localization in stress granules, mutual regulation
FUS: Interaction in RNA processing
TIA-1: Co-regulation of stress granule formation
Ago2: Shared target mRNAs in microRNA-mediated regulation

Therapeutic Implications

Potential Therapeutic Targets

HuR represents a promising therapeutic target for neurodegenerative diseases[@choi2021]:

Small molecule modulators: Development of compounds that modulate HuR activity

Antisense oligonucleotides: Targeting specific HuR-regulated mRNAs

RNA-based therapeutics: Manipulating HuR expression or function

Strategies for Intervention

Enhancing HuR function: Protecting neurons from stress
Inhibiting pathological HuR: In specific disease contexts
Restoring nucleocytoplasmic balance: Normalizing HuR localization
Combination therapies: With existing neuroprotective agents

Biomarker Potential

HuR expression levels in cerebrospinal fluid or peripheral blood mononuclear cells may serve as:

Diagnostic biomarkers for neurodegenerative diseases
Prognostic indicators of disease progression
Response markers for therapeutic interventions

Key Research Findings

Elevated HuR levels correlate with tau pathology in AD brain[@papadaki2022]

Neuronal HuR regulates amyloid-beta production via alternative polyadenylation[@chang2021]

Loss of nuclear HuR impairs synaptic plasticity in aging neurons[@kato2018]

HuR-mediated tau mRNA stability contributes to NFT formation[@wang2019]

HuR in PD: oxidative stress and mitochondrial dysfunction[@yang2021]

Stress granule formation is dysregulated in ALS with HuR involvement[@brennerg2015]

HuR stabilizes ATG5 to facilitate autophagy in neurodegeneration[@li2020]

Cross-References

[RNA Processing Mechanisms](/mechanisms/rna-processing)
[Stress Granules in Neurodegeneration](/mechanisms/stress-granules)
[TDP-43 Proteinopathy](/mechanisms/tdp-43-proteinopathy)
[Alzheimer's Disease](/diseases/alzheimers-disease)
[Parkinson's Disease](/diseases/parkinsons-disease)
[Amyotrophic Lateral Sclerosis](/diseases/amyotrophic-lateral-sclerosis)
[ELAVL2 Gene](/genes/elavl2)
[ELAVL3 Gene](/genes/elavl3)
[TARDBP Gene](/genes/tardbp)
[FUS Gene](/genes/fus)

External Links

[NCBI Gene: ELAVL1](https://www.ncbi.nlm.nih.gov/gene/1994)
[UniProt: HuR (P16960)](https://www.uniprot.org/uniprot/P16960)
[OMIM: 603466](https://www.omim.org/entry/603466)
[Ensembl: ENSG00000162368](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000162368)
[PubMed: ELAVL1 neurodegeneration](https://pubmed.ncbi.nlm.nih.gov/?term=ELAVL1+neurodegeneration)

References

[Abdelmohsen K, Gorospe M, Posttranscriptional regulation of AU-rich element mRNAs by the ELAV-like protein HuR (2008)](https://doi.org/10.1016/j.tibs.2008.08.004)

[Brenner GJ et al., Dysregulated post-transcriptional response mediated by RNA-binding proteins in ALS (2015)](https://doi.org/10.1093/brain/awv254)

[Srikantan S, Gorospe M, HuR in cell fate decisions (2012)](https://doi.org/10.1016/j.tcb.2012.04.006)

[Masuda K et al., RNA granules in neurodegeneration (2013)](https://doi.org/10.1016/j.tibs.2013.01.008)

[Papadaki M et al., Elevated HuR in Alzheimer's disease and tau pathology (2022)](https://doi.org/10.1186/s40478-022-01324-7)

[Chang J et al., Neuronal HuR regulates amyloid-beta production (2021)](https://doi.org/10.1523/JNEUROSCI.2156-20.2021)

[Li L et al., HuR stabilizes ATG5 protein to facilitate autophagy (2020)](https://doi.org/10.1080/15548627.2020.1762060)

[Wang W et al., HuR-mediated tau mRNA stability in AD (2019)](https://doi.org/10.1007/s12035-019-01767-5)

[Yang J et al., RNA-binding protein HuR in Parkinson's disease (2021)](https://doi.org/10.1016/j.redox.2021.101928)

[Zhang J et al., Stress granule formation in neurodegenerative diseases (2018)](https://doi.org/10.1007/s10571-018-0589-3)

[Das S et al., Elavl1 regulates TDP-43 aggregation (2019)](https://doi.org/10.1016/j.nbd.2019.05.023)

[Lee HY et al., Modulation of HuR by phosphorylation (2020)](https://doi.org/10.1016/j.cellsig.2020.109631)

[Van Hoof D et al., Alternative splicing of tau exon 6 regulated by HuR (2018)](https://doi.org/10.1093/hmg/ddy167)

[Choi H et al., Therapeutic targeting of HuR in neurodegenerative diseases (2021)](https://doi.org/10.1016/j.addr.2021.01.012)

[Kurosaki T, Maquat LE, Nonsense-mediated mRNA decay (2019)](https://doi.org/10.1016/bs.mie.2019.06.014)

[Behl T et al., RNA-binding proteins in neuroinflammation (2022)](https://doi.org/10.1186/s12974-022-02345-6)

[De SK et al., HuR and circadian rhythm regulation (2021)](https://doi.org/10.1016/j.neuroscience.2021.03.015)

[Fan L et al., m6A modification of HuR mRNA (2019)](https://doi.org/10.1080/15476286.2019.1656351)

[Kato Y et al., Loss of nuclear HuR in aging neurons (2018)](https://doi.org/10.1016/j.neurobiolaging.2018.02.019)

[Sakao K et al., HuR promotes neuronal survival through BDNF mRNA (2020)](https://doi.org/10.1038/s41419-020-02863-7)

[Roy R et al., RNA granules in neurodegenerative disease (2022)](https://doi.org/10.1016/j.pneurobio.2022.102310)

[Chen C et al., HuR polymorphism and Alzheimer's disease risk (2020)](https://doi.org/10.1016/j.nbd.2020.104932)

Pathway Diagram

The following diagram shows the key molecular relationships involving ELAVL1 Gene discovered through SciDEX knowledge graph analysis:

Mermaid diagram (expand to render)

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Related Entities

ELAVL1

▸Metadataorigin_type: v1_polymorphic_backfill

slug	genes-elavl1
kg_node_id	ELAVL1
entity_type	gene
origin_type	v1_polymorphic_backfill
source_table	wiki_pages
wiki_page_id	wp-ea2a4d2ec5d2
__merged_from	{'merged_at': '2026-05-13', 'unprefixed_id': 'genes-elavl1'}
_schema_version	1

📊 Evidence Profile Foundational

Evidence Balance

+0%

Certainty

60%

Debates

0

Incoming

12

Outgoing

21

0 supporting 0 contradicting 0 neutral

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📗 Cite This Artifact

ELAVL1 Gene

ELAVL1 Gene

Overview

ELAVL1 Gene

Overview

Gene and Protein Structure

Gene Organization

Protein Domains

Post-Translational Modifications

Biological Functions

mRNA Stabilization

Translation Regulation

Subcellular Localization

Expression in the Nervous System

Cellular Distribution

Brain Region Expression

Role in Neurodegenerative Diseases

Alzheimer's Disease

Parkinson's Disease

Amyotrophic Lateral Sclerosis

Molecular Mechanisms

Stress Response Pathways

Signaling Pathways

Interaction with Other RBPs

Therapeutic Implications

Potential Therapeutic Targets

Strategies for Intervention

Biomarker Potential

Key Research Findings

Cross-References

External Links

References

Pathway Diagram

💬 Discussion