Synthesis and Study of Multifunctional Cyclodextrin-Deferasirox Hybrids

Area of Science:

• Biochemistry
• Medicinal Chemistry
• Pharmacology

Background:

• Metal dyshomeostasis is implicated in various diseases, including those linked to oxidative stress and protein misfolding.
• Iron overload (hemosiderosis) is often treated with deferoxirox (Exjade), while cyclodextrins are used for drug formulation and encapsulation.
• Existing treatments for metal overload have limitations, necessitating novel therapeutic approaches.

Purpose of the Study:

• To synthesize novel hybrid molecules by conjugating deferoxirox with cyclodextrins.
• To evaluate the dual properties of these hybrid molecules for metal chelation and cholesterol encapsulation.
• To assess the improved biological properties and reduced cytotoxicity of the conjugated compounds.

Main Methods:

• Amide coupling reaction was used to conjugate deferoxirox to two distinct forms of beta-cyclodextrin (6A-amino-6A-deoxy-β-cyclodextrin and 3A-amino-3A-deoxy-2A(S),3A(S)-β-cyclodextrin).
• The resulting hybrid molecules were characterized for their dual functionality.
• Biological properties and cytotoxicity were evaluated.

Main Results:

• Successful synthesis of hybrid molecules combining deferoxirox and beta-cyclodextrin.
• The hybrid molecules demonstrated capabilities for both metal chelation and cholesterol encapsulation.
• Conjugation significantly enhanced the biological properties of deferoxirox and reduced its cytotoxicity.

Conclusions:

• Conjugating beta-cyclodextrin with deferoxirox yields hybrid molecules with dual therapeutic potential.
• These novel conjugates offer an improved therapeutic profile compared to deferoxirox alone.
• This strategy holds promise for treating metal overload disorders with enhanced safety and efficacy.