Novel glycogen-based materials for scavenging cationic antimicrobial peptides

Area of Science:

• Biomaterials Science
• Drug Delivery
• Dermatology

Background:

• Cationic antimicrobial peptides (CAMPs) are implicated in psoriasis progression.
• Current psoriasis therapies have significant adverse effects.
• Polyanions offer a potential strategy for CAMP scavenging.

Purpose of the Study:

• To develop sulfated glycogen as a novel, biodegradable complexing agent for CAMP inhibition.
• To investigate the interaction between modified glycogen and CAMPs.
• To evaluate the potential of sulfated glycogen in treating psoriasis.

Main Methods:

• Synthesis and physicochemical characterization of sulfated glycogen.
• Optimization of sulfation degree by varying reaction parameters.
• Dynamic light scattering to assess complexation with lysozyme.
• In vitro assessment of hemolytic toxicity reduction of melittin.

Main Results:

• Sulfated glycogen demonstrated strong complexation with lysozyme at different pH levels.
• Modified glycogen with specific sulfation degrees significantly reduced melittin's hemolytic toxicity.
• The degree of functionalization was controlled by sulfation agent amount and reaction time.

Conclusions:

• Sulfated glycogen is a promising natural, biodegradable material for CAMP inhibition.
• This approach offers a potential alternative to current psoriasis treatments with reduced toxicity.
• Further research into modified glycogen for psoriasis therapy is warranted.