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Mitochondria-Mediated Oxidative Stress: Old Target for New Drugs
Alex Lyakhovich, Dmitri Graifer1
1International Clinical Research Center-ICRC, St. Anne´s Hospital, Masaryk University, Brno, Czech Republic. lyakhovich@gmail.com.
Abstract:
Oxidative stress, one of the crucial factors of genomic instability, is involved in many illnesses - from DNA damage and repair (DDR) related diseases to neurological abnormalities and cancer. Patients with defective DDR pathways display high level of cancer predisposition and at the same time - reveal hydrocephalia, dementias and even diabetes mellitus - all representing common hallmarks of mitochondria-related disorders. Since mitochondria are responsible both for the cell energetic metabolism and for reactive oxygen/nitrogen species (RO/NS) formation, mitochondrial dysfunction (MDF) play a pivotal role in the above disorders. Not surprisingly, RO/NS are considered to be a primary target for a large spectrum of compounds aiming to eliminate these adverse species or, in contrary, enhance their presence in order to amplify cellular death pathways. Yet, only few chemicals have received medical appreciation mainly because of their questionable therapeutic values in healthy states. As a result, recent efforts have been focused on finding the drugs that improve mitochondrial functions or chemoprevent MDF rather than being applied as RO/NS scavengers. This review addresses the most recent progress in the development and application of such chemicals and outlines some future perspectives.
Insights
Mitochondrial dysfunction contributes to genomic instability and diseases like cancer. New research focuses on drugs that enhance mitochondrial function rather than just scavenging reactive oxygen species.
Area of Science:
- Biochemistry
- Genetics
- Pathology
Background:
- Oxidative stress is a key factor in genomic instability and various diseases, including cancer and neurological disorders.
- Mitochondrial dysfunction (MDF) is implicated in these conditions due to mitochondria's role in energy metabolism and reactive oxygen/nitrogen species (RO/NS) production.
- Defective DNA damage and repair (DDR) pathways are linked to cancer predisposition and mitochondrial-related disorders.
Purpose of the Study:
- To review recent advancements in developing chemicals that improve mitochondrial function.
- To explore strategies for chemoprevention of MDF.
- To discuss future perspectives in targeting mitochondrial health for disease treatment.
Main Methods:
- Literature review of recent scientific publications.
- Analysis of chemical compounds targeting mitochondrial function.
- Discussion of therapeutic strategies beyond simple RO/NS scavenging.
Main Results:
- Few compounds targeting RO/NS have shown therapeutic value.
- Emerging research focuses on drugs that enhance mitochondrial function or prevent MDF.
- Novel chemical approaches are being developed to address MDF-related disorders.
Conclusions:
- Targeting mitochondrial function is a promising therapeutic avenue.
- Developing drugs that improve mitochondrial health offers a new strategy for treating various diseases.
- Future research should focus on chemopreventive agents and functional mitochondrial enhancers.
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