Anti-inflammatory effects of cyclodextrin nanoparticles enable macrophage repolarization and reduce inflammation

Area of Science:

• Biomaterials Science
• Immunology
• Nanotechnology

Background:

• Inflammation is central to many diseases, often driven by dysregulated signaling pathways.
• Effective treatment requires balancing inflammation control with immune function preservation.
• Cyclodextrins (CDs), especially beta-CD, are biocompatible with anti-inflammatory potential, improvable via chemical modification.

Purpose of the Study:

• To evaluate and characterize the immunomodulatory effects of amphiphilic CD derivatives formulated as nanoparticles.
• To compare the anti-inflammatory efficacy of CD nanoparticles against soluble parent beta-CD.
• To investigate the relationship between CD derivative physicochemical properties and their anti-inflammatory activity.

Main Methods:

• Utilized a human macrophage model to assess immunomodulatory effects.
• Characterized amphiphilic cyclodextrin derivatives and their self-assembled nanoparticles.
• Compared the anti-inflammatory activity of CD nanoparticles with soluble beta-CD.

Main Results:

• CD nanoparticles exhibited superior anti-inflammatory activity compared to soluble beta-CD.
• Derivative-specific effects were observed, linked to physicochemical properties.
• Downregulation of pro-inflammatory markers, inflammasome activation, and alterations in lipid profiles were noted.

Conclusions:

• Amphiphilic cyclodextrin nanoparticles demonstrate significant anti-inflammatory potential.
• These nanoparticles offer a tunable platform for modulating inflammatory responses.
• CD-based nanoparticles represent promising versatile biomaterials for managing inflammation-associated disorders.