Energy production is the most fundamentally important cellular activity supporting all other functions, particularly in highly active organs such as brains, Here we summarise transcriptome analyses of young adult (pre-disease) brains from a collection of eleven early-onset familial Alzheimer's disease (EOfAD)-like and non-EOfAD-like mutations in three zebrafish genes. The one cellular activity consistently predicted as affected by only the EOfAD-like mutations is oxidative phosphorylation that produces most of the brain's energy. All the mutations were predicted to affect protein synthesis. We extended our analysis to knock-in mouse models of APOE alleles and found the same effect for the late onset Alzheimer's disease risk allele ε4. Our results support a common molecular basis for initiation of the pathological processes leading to both early and late onset forms of Alzheimer's disease and illustrate the utility of zebrafish and of knock-in, single EOfAD mutation models for understanding the causes of this disease.
- Alzheimer's disease
- Oxidative phosphorylation