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Target intelligence / Profile preview
Superoxide dismutase 2 (mitochondrial) (SOD2)
- Target
- SOD2
- Molecular classification
- Enzyme, Metalloenzyme, Oxidoreductase
01
Overview
Superoxide dismutase 2 (SOD2) is a manganese-dependent mitochondrial enzyme that catalyzes the conversion of highly reactive superoxide radicals generated as by-products of the mitochondrial electron transport chain into less reactive hydrogen peroxide and oxygen. It functions as a homotetramer, essential for maintaining cellular health, preventing oxidative damage, and regulating apoptosis, inflammation, and aging. SOD2 deficiency or mutations are implicated in various pathologies, including cancer, neurodegeneration, and cardiovascular diseases. SOD2 is frequently targeted in research of therapeutics aiming to mitigate oxidative stress and its related disorders.
- Other names
- manganese-dependent superoxide dismutaseMnSODmitochondrial superoxide dismutase
02
Mechanism of action
Drugs or interventions targeting SOD2 typically aim to increase its activity or expression (gene therapy, SOD mimetics) to reduce oxidative stress by converting superoxide to hydrogen peroxide and oxygen. Reducing apoptosis and tissue damage via ROS scavenging.
03
Biological functions
Detoxification of reactive oxygen species (ROS)Antioxidant defenseCell death regulation (antiapoptotic under conditions of oxidative stress)Cellular aging modulation
04
Disease associations
Cancer (e.g., risk in lung, colorectal, non-Hodgkin lymphoma)Neurodegenerative disease (role in protecting against ROS involved in conditions like Alzheimer's and Parkinson's)Cardiovascular diseaseInflammationAging
05
Safety considerations
Excessive upregulation may cause cellular adaptive responses or disrupt redox signaling ("SOD2 Goldilocks effect")Altered SOD2 activity can affect cellular metabolism, leading to adverse impacts on organ function and cell survivalTherapeutic targeting must balance between reducing damaging ROS and avoiding interference with normal redox signaling
06
Interacting drugs
No small-molecule drugs are directly approved for human use that target SOD2 by upregulation or direct activation, but some experimental antioxidants and gene therapies act on SOD2 expression. SOD mimetics (e.g., MnTBAP, EUK compounds) and agents like tempol have been used experimentally to mimic or enhance SOD2 function
07
Biomarkers
SOD2 gene expression levels are used as a biomarker for oxidative stress, aging, cancer susceptibility, and mitochondrial dysfunctionSOD2 protein levels in tissues/cells might serve for efficacy monitoring in antioxidant therapies
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