Catalytic antioxidant therapy by metallodrugs: lessons from metallocorroles

Area of Science:

• Biochemistry and Pharmacology
• Oxidative Stress Research

Background:

• Classical antioxidant therapy relies on sacrificial stoichiometric antioxidants.
• Catalytic antioxidants offer a more efficient approach by neutralizing multiple reactive species without consumption.
• The benefits of catalytic antioxidants are established in chemical systems and animal models.

Purpose of the Study:

• To review the potential of metal-based catalytic antioxidants, particularly corrole-chelated complexes, for disease treatment.
• To highlight the critical issue of redox-based therapeutics potentially inducing oxidative stress.

Main Methods:

• Literature review and perspective on metal-based catalytic antioxidants.
• Focus on corrole-chelated metal complexes.
• Analysis of the pro-oxidant versus antioxidant balance in redox therapeutics.

Main Results:

• Disappointing clinical results from traditional antioxidant supplements contrast with the established benefits of catalytic antioxidants in preclinical models.
• Metal-based catalytic antioxidants, especially corrole-chelated ones, are a key area for investigation.
• Redox-based therapies carry a risk of inducing oxidative stress if not carefully designed.

Conclusions:

• Optimizing synthetic metal complexes is crucial for developing effective redox-based drug candidates.
• Further research must identify factors that enhance antioxidant potency while minimizing pro-oxidant effects.
• Bridging the gap between the hypothesis and clinical practice of antioxidant therapy requires careful design of catalytic agents.