Skin Abnormalities in Disorders with DNA Repair Defects, Premature Aging, and Mitochondrial Dysfunction
Mansoor Hussain1, Sudarshan Krishnamurthy1, Jaimin Patel1
1Laboratory of Molecular Gerontology, National Institute on Aging, Baltimore, Maryland, USA.
Abstract:
Defects in DNA repair pathways and alterations of mitochondrial energy metabolism have been reported in multiple skin disorders. More than 10% of patients with primary mitochondrial dysfunction exhibit dermatological features including rashes and hair and pigmentation abnormalities. Accumulation of oxidative DNA damage and dysfunctional mitochondria affect cellular homeostasis leading to increased apoptosis. Emerging evidence demonstrates that genetic disorders of premature aging that alter DNA repair pathways and cause mitochondrial dysfunction, such as Rothmund-Thomson syndrome, Werner syndrome, and Cockayne syndrome, also exhibit skin disease. This article summarizes recent advances in the research pertaining to these syndromes and molecular mechanisms underlying their skin pathologies.
Insights
Skin disorders are linked to DNA repair defects and mitochondrial dysfunction. These issues cause oxidative damage, impacting skin health and leading to premature aging syndromes with notable dermatological symptoms.
Area of Science:
- Genetics
- Dermatology
- Mitochondrial Biology
Background:
- DNA repair defects and mitochondrial dysfunction are implicated in various skin disorders.
- Primary mitochondrial dysfunction presents with dermatological issues like rashes and pigment abnormalities in over 10% of patients.
- Oxidative DNA damage and impaired mitochondria disrupt cellular balance, increasing apoptosis.
Purpose of the Study:
- To review recent research on genetic premature aging syndromes with skin manifestations.
- To elucidate the molecular mechanisms behind skin pathologies in these syndromes.
- To connect DNA repair, mitochondrial function, and skin aging.
Main Methods:
- Literature review of genetic disorders affecting DNA repair and mitochondrial function.
- Analysis of molecular pathways involved in cellular homeostasis and apoptosis.
- Correlation of genetic defects with observed dermatological phenotypes.
Main Results:
- Syndromes like Rothmund-Thomson, Werner, and Cockayne exhibit both premature aging and skin disease.
- Alterations in DNA repair and mitochondrial energy metabolism are common molecular denominators.
- These molecular defects contribute to oxidative stress and cellular dysfunction in the skin.
Conclusions:
- Genetic disorders of premature aging frequently involve skin pathologies.
- Dysfunctional DNA repair and mitochondrial metabolism are key contributors to skin aging and disease.
- Understanding these molecular mechanisms offers insights into therapeutic strategies for related skin conditions.
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