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Protoporphyrin IX-mediated cytotoxicity via singlet oxygen generation (PpIX-mediated cytotoxicity)
- Target
- PpIX-mediated cytotoxicity
- Molecular classification
- Photosensitizer, Porphyrin, Reactive Oxygen Species Generator
01
Overview
Protoporphyrin IX (PpIX) acts as a photosensitizer, generating singlet oxygen upon light exposure, leading to oxidative stress and cytotoxicity. This mechanism is involved in both pathological conditions like porphyrias and therapeutic applications such as photodynamic therapy (PDT).
- Other names
- PpIX photosensitizationSinglet oxygen-mediated cell deathPhotodynamic effect of PpIX
02
Mechanism of action
PpIX absorbs light, transfers energy to oxygen, generating singlet oxygen which causes oxidative damage and cell death.
03
Biological functions
PhotosensitizationReactive oxygen species generationApoptosis inductionNecrosis inductionOxidative stress induction
04
Disease associations
Erythropoietic protoporphyriaX-linked protoporphyriaCancer (sensitization for PDT)
05
Safety considerations
PhotosensitivitySkin damageLiver damage
06
Interacting drugs
5-aminolevulinic acid (ALA)
1 more in the full profile.
07
Biomarkers
PpIX levels in skin or other tissuesROS levels (e.g., singlet oxygen)
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