Impact of Fkbp5 × early life adversity × sex in humanised mice on multidimensional stress responses and circadian rhythmicity.
Verena NoldMichelle PortenhauserDolores Del PreteAndrea BlasiusIsabella HarrisEliza KorosTatiana PelehBastian HengererIris-Tatjana KolassaMichal SlezakKelly Ann AllersPublished in: Molecular psychiatry (2022)
The cumulative load of genetic predisposition, early life adversity (ELA) and lifestyle shapes the prevalence of psychiatric disorders. Single nucleotide polymorphisms (SNPs) in the human FKBP5 gene were shown to modulate disease risk. To enable investigation of disease-related SNPs in behaviourally relevant context, we generated humanised mouse lines carrying either the risk (AT) or the resiliency (CG) allele of the rs1360780 locus and exposed litters of these mice to maternal separation. Behavioural and physiological aspects of their adult stress responsiveness displayed interactions of genotype, early life condition, and sex. In humanised females carrying the CG- but not the AT-allele, ELA led to altered HPA axis functioning, exploratory behaviour, and sociability. These changes correlated with differential expression of genes in the hypothalamus, where synaptic transmission, metabolism, and circadian entrainment pathways were deregulated. Our data suggest an integrative role of FKBP5 in shaping the sex-specific outcome of ELA in adulthood.
Keyphrases
- early life
- genome wide
- dna methylation
- copy number
- endothelial cells
- high fat diet induced
- cardiovascular disease
- risk factors
- metabolic syndrome
- young adults
- physical activity
- weight loss
- wild type
- machine learning
- body mass index
- gene expression
- mass spectrometry
- birth weight
- insulin resistance
- pregnancy outcomes
- breast cancer risk
- genome wide association study
- gestational age