Related Experiment Video
Updated: Jul 2, 2026

Assaying β-amyloid Toxicity using a Transgenic C. elegans Model
Published on: October 9, 2010
Nuclear factor erythroid 2-related factor 2 protects against beta amyloid
Katja Kanninen1, Tarja M Malm, Henna-Kaisa Jyrkkänen
1Department of Neurobiology, AI Virtanen Institute for Molecular Sciences, Kuopio University, Kuopio, Finland.
The Nuclear factor erythroid 2-related factor 2 (Nrf2) pathway is impaired in Alzheimer's disease (AD). Boosting Nrf2 activity protects against amyloid-beta toxicity, suggesting a therapeutic target for AD.
Area of Science:
- Neuroscience
- Molecular Biology
- Genetics
Background:
- Alzheimer's disease (AD) pathogenesis involves oxidative stress.
- Nuclear factor erythroid 2-related factor 2 (Nrf2) regulates antioxidant response element (ARE) genes, offering protection against oxidative injury.
Purpose of the Study:
- Investigate the Nrf2-ARE pathway in a mouse model of AD.
- Determine if Nrf2 can provide neuroprotection against amyloid-beta (Abeta) peptides.
Main Methods:
- Studied Nrf2 and its target genes in APP/PS1 transgenic AD mice.
- Administered tert-butylhydroquinone or used adenoviral Nrf2 gene transfer to boost Nrf2-ARE activity.
- Assessed neuroprotection against Abeta toxicity and measured p66Shc phosphorylation.
Main Results:
- The Nrf2-ARE pathway was attenuated in the brains of APP/PS1 mice during Abeta deposition.
- Enhanced Nrf2-ARE activity protected against Abeta toxicity.
- Neuroprotection correlated with increased Nrf2 target gene expression and reduced p66Shc phosphorylation.
Conclusions:
- The Nrf2-ARE pathway appears to be impaired in Alzheimer's disease.
- Inducing the Nrf2-ARE defense mechanism may offer a strategy to prevent or delay AD pathology.
Related Concept Videos
Nucleotide Excision Repair
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
Nucleotide Excision Repair
Nuclear Export of mRNA
Pharmacogenetics of Drug Targets: β₂-Adrenergic Receptors, Apo E, Thymidylate Synthase
The Retinoblastoma Gene
The first-ever tumor suppressor gene called Rb was identified in retinoblastoma - a rare eye tumor in children. In inherited forms of the disease, a child inherits one defective copy of the Rb gene, which predisposes them to retinoblastoma. However,...
Electron Transport Chain: Complex I and II
ROS generation is regulated and maintained at moderate levels necessary...