FSP1 Gene - Ferroptosis Suppressor Protein 1
Introduction
Pathway Diagram
flowchart TD
FSP1["FSP1"]
GPX4["GPX4"]
NRF2["NRF2"]
KEAP1["KEAP1"]
SLC7A11["SLC7A11"]
Ferroptosis["Ferroptosis"]
OxidativeStress["Oxidative Stress"]
MitoFunction["Mitochondrial Function"]
Inflammation["Inflammation"]
Neurodegeneration["Neurodegeneration"]
Alzheimer["Alzheimer Disease"]
Stroke["Stroke"]
FSP1 -->|"interacts with"| GPX4
FSP1 -->|"interacts with"| NRF2
FSP1 -->|"interacts with"| KEAP1
FSP1 -->|"regulates"| SLC7A11
FSP1 -->|"regulates"| GPX4
FSP1 -->|"inhibits"| Ferroptosis
FSP1 -->|"protects against"| Ferroptosis
GPX4 -->|"prevents"| Ferroptosis
SLC7A11 -->|"prevents"| Ferroptosis
Ferroptosis -->|"promotes"| OxidativeStress
OxidativeStress -->|"impairs"| MitoFunction
OxidativeStress -->|"triggers"| Inflammation
Inflammation -->|"contributes to"| Neurodegeneration
MitoFunction -->|"dysfunction leads to"| Neurodegeneration
Neurodegeneration -->|"manifests as"| Alzheimer
Neurodegeneration -->|"manifests as"| Stroke
classDef central fill:#006494,color:#e0e0e0
classDef protective fill:#1b5e20,color:#e0e0e0
classDef pathological fill:#ef5350,color:#0d0d1a
classDef regulatory fill:#4a1a6b,color:#e0e0e0
class FSP1 central
class GPX4,SLC7A11,NRF2 protective
class Ferroptosis,OxidativeStress,Inflammation,Neurodegeneration,Alzheimer,Stroke pathological
class KEAP1,MitoFunction regulatory
...FSP1 Gene - Ferroptosis Suppressor Protein 1
Introduction
Pathway Diagram
Mermaid diagram (expand to render)
Fsp1 Gene Ferroptosis Suppressor Protein 1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
<div class="infobox infobox-gene"> [@coq]
<table> [@fspa]
<tr><th colspan="2" style="background:#f0f0f0;">FSP1 (AIFM2)</th></tr>
<tr><td><b>Gene Symbol</b></td><td>FSP1 (formerly AIFM2)</td></tr>
<tr><td><b>Full Name</b></td><td>Ferroptosis Suppressor Protein 1 (Apoptosis-Inducing Factor Mitochondrial 2)</td></tr>
<tr><td><b>Chromosomal Location</b></td><td>10q22.1</td></tr>
<tr><td><b>NCBI Gene ID</b></td><td>[84883](https://www.ncbi.nlm.nih.gov/gene/84883)</td></tr>
<tr><td><b>OMIM</b></td><td>[611202](https://www.omim.org/entry/611202)</td></tr>
<tr><td><b>Ensembl ID</b></td><td>ENSG00000185730</td></tr>
<tr><td><b>UniProt ID</b></td><td>[Q9NSW9](https://www.uniprot.org/uniprot/Q9NSW9)</td></tr>
<tr><td><b>Protein</b></td><td>FSP1 (Ferroptosis Suppressor Protein 1)</td></tr>
<tr><td><b>Associated Diseases</b></td><td>Cancer, Ferroptosis-related disorders, Neurodegeneration</td></tr>
</table>
</div>
Overview
FSP1 ([Ferroptosis](/entities/ferroptosis) Suppressor Protein 1), formerly known as AIFM2 ([Apoptosis](/entities/apoptosis) Factor Mitochondrial 2), is a NADH-dependent coenzyme Q reductase that suppresses ferroptosis independently of the GPX4 pathway. FSP1 catalyzes the reduction of coenzyme Q10 (CoQ) to ubiquinol, which acts as a lipophilic antioxidant preventing lipid peroxidation in membranes.
Molecular Function
Coenzyme Q Reductase Activity
FSP1 functions as an NADH-dependent CoQ reductase:
- Substrate: Coenzyme Q10 (CoQ10/ubiquinone)
- Electron donor: NADH
- Product: Ubiquinol (CoQ10H2)
- Location: Multiple cellular membranes
Ferroptosis Suppression
FSP1 prevents ferroptosis through CoQ reduction:
Ubiquinol generation: Reduces oxidized CoQ to antioxidant form
Membrane protection: Neutralizes lipid peroxyl radicals
GPX4-independent: Alternative ferroptosis suppression pathway
Ferroptosis vulnerability: Cells lacking FSP1 are more sensitiveExpression Pattern
Tissue Distribution
FSP1 is widely expressed:
- Heart: High expression in cardiac muscle
- Brain: Moderate expression in [neurons](/entities/neurons)
- Kidney: High expression
- Liver: Moderate expression
- Lung: Moderate expression
Cellular Localization
- Mitochondria: Primary location
- Plasma membrane: Also present
- Peroxisomes: Some localization
- Cytosol: Minor fraction
Disease Associations
Cancer
- Oncogenic role: FSP1 is often overexpressed in cancers
- Ferroptosis resistance: Cancer cells exploit FSP1 to avoid ferroptosis
- Therapeutic targeting: FSP1 inhibitors as anticancer agents
Neurodegeneration
- Potential protection: May protect neurons from ferroptosis
- CoQ10 connection: Links to CoQ10 deficiency in PD
- Therapeutic potential: FSP1 activators may help neurodegeneration
Cardiovascular Disease
- Cardioprotection: FSP1 may protect heart tissue
- Ischemia-reperfusion: Role in reducing oxidative damage
Therapeutic Targeting
FSP1 Inhibitors (For Cancer)
| Compound | Mechanism | Stage | Notes |
|----------|-----------|-------|-------|
| iFSP1 | Direct inhibitor | Research | Selective FSP1 inhibitor |
| Dipleinoid | FSP1 pathway | Discovery | Novel chemotype |
FSP1 Activators (For Neuroprotection)
| Strategy | Approach | Status |
|----------|----------|--------|
| NAD+ boosters | Increase NADH availability | Research |
| CoQ10 supplementation | Increase substrate | Clinical |
| Gene therapy | Increase expression | Preclinical |
Research Directions
- Develop selective FSP1 modulators
- Understand regulation in different tissues
- Explore therapeutic applications
- Biomarker development
Key Publications
Expression Pattern
This gene is expressed in various brain regions with specific patterns of cellular localization. Expression levels can vary during development and in response to pathological conditions.
Disease Mechanisms
The protein product plays important roles in cellular pathways relevant to neurodegenerative diseases. Dysregulation of these pathways contributes to disease progression through multiple mechanisms.
Therapeutic Implications
Understanding the function of this gene/protein provides insights for therapeutic development. Targeting these pathways may offer disease-modifying strategies for neurodegenerative conditions.
Animal Models
Mouse models have been generated to study the function of this gene. Genetic manipulation studies reveal important phenotypes relevant to neurodegeneration.
Background
The study of Fsp1 Gene Ferroptosis Suppressor Protein 1 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
- GPX4 Gene
- SLC7A11 Gene
- [Ferroptosis Pathway](/mechanisms/ferroptosis-pathway)
- [Oxidative Stress Pathway](/mechanisms/oxidative-stress)
- Coenzyme Q10 Pathway
External Links
- [NCBI Gene: FSP1](https://www.ncbi.nlm.nih.gov/gene/84883)
- [UniProt: Q9NSW9](https://www.uniprot.org/uniprot/Q9NSW9)
- [Ensembl: ENSG00000185730](https://www.ensembl.org/Homo_sapiens/Gene/Summary?g=ENSG00000185730)
- [GeneCards: FSP1](https://www.genecards.org/cgi-bin/carddisp.pl?gene=FSP1)
References
[Unknown, FSP1 is a glutathione-independent ferroptosis suppressor. Nature (n.d.)](https://pubmed.ncbi.nlm.nih.gov/32877946/)
[Unknown, CoQ reduction by FSP1 prevents ferroptosis. Cell (n.d.)](https://pubmed.ncbi.nlm.nih.gov/28065621/)
[Unknown, FSP1 in cancer ferroptosis resistance. Nature Reviews Cancer (n.d.)](https://pubmed.ncbi.nlm.nih.gov/32472567/)Pathway Diagram
The following diagram shows the key molecular relationships involving FSP1 Gene - Ferroptosis Suppressor Protein 1 discovered through SciDEX knowledge graph analysis:
Mermaid diagram (expand to render)