Half-Sandwich Organometallic Ir(III) and Ru(II) Compounds and their Interactions with Biomolecules

Area of Science:

• Coordination Chemistry
• Medicinal Chemistry
• Biochemistry

Background:

• Metal-based complexes, particularly those of Iridium (Ir) and Ruthenium (Ru), are investigated for therapeutic potential.
• Their biological activity is often modulated through interactions with key biomolecules within the body.
• Understanding these interactions is crucial for developing effective metallodrugs.

Purpose of the Study:

• To review the influence of Ir(III) and Ru(II) coordination complexes on cytotoxic activity.
• To highlight interactions between these metal complexes and significant biomolecules: deoxyribonucleic acid (DNA), human serum albumin (HSA), nicotinamide adenine dinucleotide (NADH), and glutathione (GSH).
• To provide insights for designing novel half-sandwich Ir(III) and Ru(II) complexes with tailored biological properties.

Main Methods:

• Literature review of studies involving Ir(III) and Ru(II) coordination complexes.
• Analysis of reported interactions with biomolecules (DNA, HSA, NADH, GSH).
• Discussion of structure-activity relationships influencing cytotoxicity.

Main Results:

• Ir(III) and Ru(II) complexes exhibit varying cytotoxic activities based on their interactions with DNA, HSA, NADH, and GSH.
• These biomolecular interactions significantly influence the efficacy and mechanism of action of metal-based agents.
• The review compiles examples demonstrating how metal complexes engage with biological targets.

Conclusions:

• Interactions with biomolecules like DNA and HSA are key determinants of cytotoxic activity for Ir(III) and Ru(II) complexes.
• This understanding facilitates the rational design of new metallodrugs with improved therapeutic profiles.
• The review offers valuable perspectives on the in vivo behavior of metal-based drugs.