Related Experiment Video
Updated: May 3, 2026
09:37
A Phenotyping Regimen for Genetically Modified Mice Used to Study Genes Implicated in Human Diseases of Aging
Published on: July 14, 2016
7.7K
Age-related vascular gene expression profiling in mice.
Christos Rammos1, Ulrike B Hendgen-Cotta1, Rene Deenen2
1University Hospital Düsseldorf, Medical Faculty, Division of Cardiology, Pulmonology and Vascular Medicine, Moorenstraße 5, 40225 Düsseldorf, Germany.
Mechanisms of Ageing and Development
|January 23, 2014
Summary
Aging causes detrimental cardiovascular changes, including increased vascular stiffness and hypertension. This study reveals age-related gene expression alterations in mouse aortas, offering insights into vascular aging.
Area of Science:
- Cardiovascular Biology
- Molecular Biology
- Gerontology
Background:
- Aging leads to cardiovascular system deterioration, particularly in large arteries, increasing vascular stiffness, hypertension, and cardiovascular risks.
- Oxidative stress and biomolecular damage during aging cause altered gene expression, genomic instability, and cellular dysfunction.
- While studies exist on aged mice, a deep analysis of age-related gene expression and transcriptional profiles in vascular tissue is lacking.
Purpose of the Study:
- To investigate age-related changes in the vascular transcriptome.
- To identify differentially expressed genes and pathways in the aorta of aged mice compared to adults.
- To provide insights into molecular mechanisms underlying vascular aging.
Main Methods:
- Gene expression microarray experiments were conducted on aortas from adult and old C57BL/6 mice.
- Vascular dysfunction was confirmed by measuring aortic stiffness and systolic blood pressure.
- Bioinformatic analyses were used to identify overrepresented Gene Ontology categories and molecular pathways.
Main Results:
- Significant differences in gene expression profiles were observed between adult and old mice aortas.
- Key pathways identified include transforming growth factor-beta (TGF-β), the renin-angiotensin system, and detoxification systems.
- Differentially expressed genes were associated with vascular function and disease processes.
Conclusions:
- Aging significantly alters the vascular transcriptome, impacting key molecular pathways.
- These findings offer valuable clues for strategies to counteract or prevent vascular aging and its adverse effects.
- Understanding these age-related gene expression changes is crucial for mitigating cardiovascular morbidity and mortality.
