IL1R1 Gene
Introduction
Il1R1 Gene 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
flowchart TD
IL1R1["IL1R1"] -->|"contributes to"| Encephalitis["Encephalitis"]
IL1R1["IL1R1"] -->|"expressed in"| Ms["Ms"]
IL1R1["IL1R1"] -->|"expressed in"| Neuroinflammation["Neuroinflammation"]
IL1R1["IL1R1"] -->|"expressed in"| Inflammation["Inflammation"]
IL1R1["IL1R1"] -->|"associated with"| Als["Als"]
IL1R1["IL1R1"] -->|"associated with"| Inflammation["Inflammation"]
IL1R1["IL1R1"] -->|"activates"| Als["Als"]
IL1R1["IL1R1"] -->|"activates"| Inflammation["Inflammation"]
IL1R1["IL1R1"] -->|"interacts with"| Cancer["Cancer"]
IL1R1["IL1R1"] -->|"expressed in"| Obesity["Obesity"]
IL1R1["IL1R1"] -->|"activates"| Neuroinflammation["Neuroinflammation"]
IL1R1["IL1R1"] -->|"activates"| SERPINA3["SERPINA3"]
IL1R1["IL1R1"] -->|"expressed in"| S100A9["S100A9"]
IL1R1["IL1R1"] -->|"associated with"| Nfkb["Nfkb"]
style IL1R1 fill:#4fc3f7,stroke:#333,color:#000
The IL1R1 Gene is a gene/protein involved in various cellular processes relevant to neurodegenerative diseases. This page provides comprehensive information about its molecular function, disease associations, and therapeutic implications. [@refa]
...IL1R1 Gene
Introduction
Il1R1 Gene 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
Mermaid diagram (expand to render)
The IL1R1 Gene is a gene/protein involved in various cellular processes relevant to neurodegenerative diseases. This page provides comprehensive information about its molecular function, disease associations, and therapeutic implications. [@refa]
<div class="infobox infobox-gene"> [@refb]
<table> [@refc]
<tr><th colspan="2" style="background:#f0f0f0;">IL1R1 - Interleukin 1 Receptor Type 1</th></tr> [@refd]
<tr><td><b>Full Name</b></td><td>Interleukin 1 Receptor Type 1</td></tr> [@refe]
<tr><td><b>Chromosome</b></td><td>2q12</td></tr> [@reff]
<tr><td><b>NCBI Gene ID</b></td><td>[3553](https://www.ncbi.nlm.nih.gov/gene/3553)</td></tr> [@refg]
<tr><td><b>OMIM ID</b></td><td>[147379](https://www.omim.org/entry/147379)</td></tr>
<tr><td><b>Ensembl ID</b></td><td>ENSG00000115594</td></tr>
<tr><td><b>UniProt ID</b></td><td>[P01589](https://www.uniprot.org/uniprot/P01589)</td></tr>
<tr><td><b>Associated Diseases</b></td><td>Alzheimer's Disease, Parkinson's Disease, ALS, Multiple Sclerosis, Stroke, Traumatic Brain Injury</td></tr>
</table>
</div>
Interleukin-1 receptor type 1 (IL-1R1) is the primary receptor for IL-1alpha and IL-1beta, mediating pro-inflammatory signaling in the brain.
Function
IL-1R1 is a transmembrane receptor of the IL-1 receptor family, consisting of:
Structure:
- Extracellular domain: 3 immunoglobulin-like domains
- Transmembrane domain: Single pass
- Cytoplasmic Toll/IL-1R (TIR) domain
Signaling Pathway:
IL-1β binds to IL-1R1 (Kd ~ 10⁻¹¹ M)
IL-1R1 recruits IL-1R3 (IL-1RAcP) as co-receptor
TIR domain aggregation activates MyD88
MyD88 recruits IRAK4, IRAK1/2
TRAF6 activation leads to [NF-κB](/entities/nf-kb) and MAPK activation
Inflammatory gene transcriptionDecoy Receptor:
IL-1R2 acts as a decoy receptor:
- Extracellular domain binds IL-1 but cannot signal
- Shedding produces soluble IL-1R2
- Regulates IL-1 activity
Disease Associations
Alzheimer's Disease:
- IL-1R1 overexpression in AD brain
- Promotes neuroinflammation and [Aβ](/proteins/amyloid-beta) toxicity
- Drives [tau](/proteins/tau) phosphorylation
- IL-1R1 antagonist (anakinra) shows therapeutic potential
Parkinson's Disease:
- IL-1R1 mediates dopaminergic neuron death
- Increased expression in substantia nigra
- Blocking IL-1R1 is neuroprotective
- IL-1R1/IL-1Ra balance important
ALS:
- IL-1R1 on [microglia](/cell-types/microglia-neuroinflammation) drives inflammation
- Motor neuron vulnerability
- Therapeutic targeting explored
Stroke/TBI:
- Exacerbates ischemic damage
- Therapeutic blockade beneficial
- IL-1R1 knockout mice protected
Expression
IL-1R1 expression in brain:
[Neurons](/entities/neurons): High expression, particularly in [hippocampus](/brain-regions/hippocampus)
[Astrocytes](/entities/astrocytes): Moderate to high expression
[Microglia](/entities/microglia): High expression, increases with activation
Oligodendrocytes: Low expression
Peripheral:
- T cells: High
- B cells: Moderate
- Fibroblasts: High
Signaling Pathways
NF-κB Activation
IL-1R1 signaling triggers the NF-κB transcription factor pathway, which plays a critical role in inflammatory gene expression. Upon IL-1 binding, MyD88 recruits IRAK kinases, leading to TRAF6 ubiquitination and IKK complex activation. This cascade results in IκB degradation and NF-κB nuclear translocation, driving expression of pro-inflammatory cytokines, adhesion molecules, and acute phase proteins.
MAPK Cascades
IL-1R1 also activates mitogen-activated protein kinase (MAPK) pathways including ERK, JNK, and p38. These kinases regulate diverse cellular processes including cell proliferation, differentiation, and stress responses. In neurons, MAPK activation contributes to synaptic plasticity but chronic activation can lead to excitotoxicity.
Cross-talk with Other Receptors
IL-1R1 signaling intersects with multiple other receptor systems:
- TLR signaling: Synergistic activation of innate immune responses
- TNF receptor: Cooperative inflammatory signaling
- Ionotropic glutamate receptors: Modulation of [NMDA](/entities/nmda-receptor) receptor function
- Growth factor receptors: Regulation of neuronal survival pathways
Therapeutic Targeting
Clinical Applications
- Anti-IL-1 therapies: Anakinra, Canakinumab for inflammatory conditions
- [Blood-brain barrier](/entities/blood-brain-barrier) penetration: Challenges in treating CNS inflammation
- Neuroprotective strategies: Potential for AD and PD intervention
Research Directions
- Blood-brain barrier modulation: Improving drug delivery to CNS
- Cell-type specific targeting: Selective inhibition in microglia vs neurons
- Combination therapies: IL-1 inhibition with other neuroprotective agents
- Biomarkers: Identifying patients who may benefit from anti-IL-1 therapy
Animal Models
- IL-1R1 knockout mice: Used to study neuroinflammation
- Transgenic models: IL-1 overexpression in brain
- AD models: IL-1 elevation in amyloid plaque models
- PD models: IL-1 contributions to dopaminergic neuron loss
Background
The study of Il1R1 Gene 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.
See Also
- [Inflammation Pathway](/mechanisms/neuroinflammation)
- [NLRP3 Inflammasome](/mechanisms/nlrp3-inflammasome) [Alzheimer's Disease](/diseases/alzheimers-disease)
- [Parkinson's Disease](/diseases/parkinsons-disease)
- [ALS](/diseases/amyotrophic-lateral-sclerosis)
External Links
- [NCBI Gene](https://www.ncbi.nlm.nih.gov/gene/3553)
- [UniProt](https://www.uniprot.org/uniprot/P01589)
- [Ensembl](https://www.ensembl.org/Homo_species/Gene/Summary?g=ENSG00000115594)
References
[Unknown, (n.d.)](https://pubmed.ncbi.nlm.nih.gov/1285792/)
[Unknown, (n.d.)](https://pubmed.ncbi.nlm.nih.gov/7642623/)
[Unknown, (n.d.)](https://pubmed.ncbi.nlm.nih.gov/10490088/)
[Unknown, (n.d.)](https://pubmed.ncbi.nlm.nih.gov/11821393/)
[Unknown, (n.d.)](https://pubmed.ncbi.nlm.nih.gov/14631082/)
[Unknown, (n.d.)](https://pubmed.ncbi.nlm.nih.gov/16731835/)
[Unknown, (n.d.)](https://pubmed.ncbi.nlm.nih.gov/19303116/)
[Unknown, (n.d.)](https://pubmed.ncbi.nlm.nih.gov/25227937/)Pathway Diagram
The following diagram shows the key molecular relationships involving IL1R1 Gene discovered through SciDEX knowledge graph analysis:
Mermaid diagram (expand to render)