Aging and Epigenetic Changes in Gene Expression
Author Information
Author(s): Johannes WIM Simons
Primary Institution: Leiden University Medical Center
Hypothesis
To what extent do deviations in transcription profiles of proteasome genes occur in non-tumorigenic tissues derived from normal individuals as they age?
Conclusion
Aging and differentiation are related to epigenetic changes that alter the transcription profile of proteasomal genes.
Supporting Evidence
- Increased donor age correlates with decreased deviations from the general transcription profile.
- The age-related index declined faster for males than females.
- Transcription profiles from similar tissues were more alike than those from different tissues.
Takeaway
As people get older, the way their genes behave changes, and this is linked to how their cells develop.
Methodology
Microarray analysis of transcription profiles from 90 human donors aged 22 to 87 years.
Potential Biases
Potential bias due to the inclusion of post-mortem samples.
Limitations
The study is limited by the number of libraries with known age and the potential influence of post-mortem changes.
Participant Demographics
Human donors aged 22 to 87 years, with a mix of genders.
Statistical Information
P-Value
P = 2.65 × 10-5
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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