Mitochondrial Aging: Focus on Mitochondrial DNA Damage in Atherosclerosis - A Mini-Review
Igor A Sobenin1, Andrey V Zhelankin, Vasily V Sinyov
1Laboratory of Medical Genetics, Institute of Clinical Cardiology, Russian Cardiology Research and Production Complex, Moscow, Russia.
Insights
Mitochondrial DNA mutations are linked to atherosclerosis and aging. This review explores how these mutations contribute to artery wall damage and cell senescence in this age-related disease.
Area of Science:
- Cardiovascular Biology
- Aging Research
- Mitochondrial Medicine
Background:
- Atherosclerosis involves inflammatory responses and cellular changes in artery walls.
- It is an age-related pathology marked by cell senescence, including DNA damage and mitochondrial dysfunction.
- Mitochondrial aging features structural alterations and DNA damage, but mechanisms in atherosclerosis are unclear.
Purpose of the Study:
- To review recent findings on mitochondrial genome mutations in atherosclerosis.
- To explore the role of these mutations as markers of mitochondrial aging and cell senescence.
Main Methods:
- Literature review of studies on mitochondrial DNA mutations.
- Analysis of research linking these mutations to atherosclerosis development.
- Examination of mutations as indicators of cellular aging processes.
Main Results:
- Mitochondrial genome mutations are implicated in atherosclerosis development.
- These mutations serve as markers for mitochondrial aging and cell senescence.
- Understanding these mechanisms is crucial for age-related disease research.
Conclusions:
- Mitochondrial DNA mutations are significant factors in atherosclerosis.
- They are key indicators of cellular aging within the arterial wall.
- Further research into mitochondrial mechanisms is vital for understanding and treating atherosclerosis.
Abstract:
Atherosclerosis is a complex disease which can be described as an excessive fibrofatty, proliferative, inflammatory response to damage to the artery wall involving several cell types such as smooth muscle cells, monocyte-derived macrophages, lymphocytes, dendritic cells and platelets. On the other hand, atherosclerosis is a typical age-related degenerative pathology, which is characterized by signs of cell senescence in the arterial wall including reduced cell proliferation, irreversible growth arrest and apoptosis, increased DNA damage, the presence of epigenetic modifications, shortening of telomere length and mitochondrial dysfunction. The most prominent characteristics of mitochondrial aging are their structural alterations and mitochondrial DNA damage. The mechanisms of mitochondrial genome damage in the development of chronic age-related diseases such as atherosclerosis are not yet well understood. This review focuses on the latest findings from studies of those mutations of the mitochondrial genome which may play an important role in the development of atherosclerosis and which are, at the same time, also markers of mitochondrial aging and cell senescence.
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