IDH1 Gene - Isocitrate Dehydrogenase 1

Pathway Diagram

flowchart TD
    IDH1["IDH1<br/>(Isocitrate Dehydrogenase 1)"]
    
    MetabolicChanges["Metabolic<br/>Changes"]
    AlphaKG["alpha-Ketoglutarate<br/>Production"]
    TwoHG["2-Hydroxyglutarate<br/>(Oncometabolite)"]
    
    Neuroinflammation["Neuroinflammation"]
    Inflammation["Systemic<br/>Inflammation"]
    OxidativeStress["Oxidative<br/>Stress"]
    
    Alzheimer["Alzheimer's<br/>Disease"]
    Parkinson["Parkinson's<br/>Disease"]
    ALS["Amyotrophic Lateral<br/>Sclerosis"]
    MS["Multiple<br/>Sclerosis"]
    Neurodegeneration["Neurodegeneration"]
    
    Glioma["Glioma"]
    Glioblastoma["Glioblastoma"]
    Cancer["Cancer"]
    
    TherapeuticTarget["Therapeutic<br/>Target"]
    Biomarker["Disease<br/>Biomarker"]
    
    IDH1 -->|"modulates"| MetabolicChanges
    IDH1 -->|"produces"| AlphaKG
    IDH1 -->|"mutation produces"| TwoHG
    
    MetabolicChanges -->|"leads to"| OxidativeStress
    TwoHG -->|"promotes"| Neuroinflammation
    
    IDH1 -->|"activates"| Neuroinflammation
    IDH1 -->|"activates"| Inflammation
    Neuroinflammation -->|"contributes to"| Neurodegeneration
    
    IDH1 -->|"activates"| Alzheimer
    IDH1 -->|"activates"| Parkinson
    IDH1 -->|"associated with"| ALS
    IDH1 -->|"associated with"| MS
    
    IDH1 -->|"associated with"| Glioma
    IDH1 -->|"associated with"| Glioblastoma
    IDH1 -->|"therapeutic target"| Cancer
    
    IDH1 -->|"serves as"| Biomarker
    IDH1 -->|"serves as"| TherapeuticTarget
    
    style IDH1 fill:#006494
    style AlphaKG fill:#1b5e20
    style TwoHG fill:#ef5350
    style Neuroinflammation fill:#ef5350
    style Inflammation fill:#ef5350
    style OxidativeStress fill:#ef5350
    style Neurodegeneration fill:#5d4400
    style Alzheimer fill:#5d4400
    style Parkinson fill:#5d4400
    style ALS fill:#5d4400
    style MS fill:#5d4400
    style TherapeuticTarget fill:#1b5e20
    style Biomarker fill:#4a1a6b

Overview

Idh1 Gene Isocitrate Dehydrogenase 1 plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Introduction

Idh1 Gene Isocitrate Dehydrogenase 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. ^{1IDH1 deficiency in neurons induces oxidative stress and cognitive deficits in Alzheimer's disease2022 · Nat Commun · PMID 36253451Open reference}

IDH1 (Isocitrate Dehydrogenase 1)^{2IDH1 mutation contributes to tumorigenesis by altering metabolism and epigenetic regulation2013 · Cell Stem Cell · PMID 24074824Open reference} encodes a cytosolic enzyme that catalyzes the oxidative decarboxylation of isocitrate to α-ketoglutarate, playing crucial roles in cellular metabolism and oxidative stress response. ^{3Association between IDH1 polymorphisms and Parkinson's disease risk2021 · Parkinsonism Relat Disord · PMID 34474296Open reference}

Gene Overview

Function

IDH1 is a NADP+-dependent enzyme localized primarily in the cytosol and peroxisomes. It catalyzes the reversible oxidation of isocitrate to α-ketoglutarate (α-KG), producing NADPH.

Key Functions:

• NADPH Production: Generates NADPH for antioxidant defense and biosynthetic reactions

• Cellular Metabolism: Part of the tricarboxylic acid cycle

• Oxidative Stress Protection: NADPH supports glutathione reductase

• Epigenetic Regulation: Produces α-KG, a cofactor for dioxygenases

Disease Associations

Alzheimer’s Disease

• IDH1 activity is reduced in AD brain

• Impaired NADPH production contributes to oxidative stress

• α-KG deficiency affects histone demethylation

• Metabolic alterations in AD neurons

Parkinson’s Disease

• IDH1 polymorphisms associated with PD risk

• Reduced IDH1 in substantia nigra

• Contributes to dopaminergic neuron vulnerability

Gliomas

• IDH1 mutations are common in low-grade gliomas

• Produce 2-hydroxyglutarate (2-HG) oncometabolite

• Affects epigenetic regulation

Expression

IDH1 is expressed in:

• Neurons (moderate)

• Astrocytes (high)

• Oligodendrocytes

• Various peripheral tissues

Overview

Idh1 Gene Isocitrate Dehydrogenase 1 plays an important role in the study of neurodegenerative diseases. This page provides comprehensive information about this topic, including its mechanisms, significance in disease processes, and therapeutic implications.

Background

The study of Idh1 Gene Isocitrate Dehydrogenase 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.

External Links

• PubMed - Biomedical literature

• Alzheimer’s Disease Neuroimaging Initiative - Research data

• Allen Brain Atlas - Brain gene expression data