Dual Transport of Active Substances with a Layer-by-Layer-Based Drug Delivery System to Terminate Inflammatory...

Area of Science:

• Biomaterials Science
• Nanotechnology
• Inflammation Research

Background:

• Conventional chronic inflammation therapies often cause severe side effects due to high-dose active agent application.
• Developing less physically demanding yet highly efficient therapeutic strategies is crucial for managing inflammation.
• Human neutrophil elastase (HNE), secreted by neutrophils, plays a key role in inflammatory tissue degradation.

Purpose of the Study:

• To investigate the use of Layer-by-Layer (LbL) microcarriers for targeted delivery of anti-inflammatory agents.
• To evaluate the efficacy of alpha1-antitrypsin (AT) and cefoperazone co-delivery for inhibiting HNE.
• To demonstrate the synergistic effect of combined agents within LbL microcarriers for enhanced inflammation control.

Main Methods:

• Fabrication of LbL microcarriers incorporating alpha1-antitrypsin (AT) and cefoperazone in distinct layers.
• Assessment of AT protection and controlled release from the microcarrier multilayer structure.
• Investigation of HNE inhibition in neutrophils (PMNs) with and without cefoperazone co-application.

Main Results:

• Successful assembly of LbL microcarriers with both AT and cefoperazone demonstrated.
• Cefoperazone preserved AT activity and enhanced its inhibitory effect on HNE.
• Co-application of cefoperazone led to significantly improved HNE inhibition, even with reduced AT dosage and carrier concentration.

Conclusions:

• LbL microcarriers offer a gentle yet effective strategy for localized inflammation treatment.
• The modular assembly of LbL carriers enables synergistic effects between co-delivered active agents.
• This approach holds promise for developing advanced therapies for inflammatory conditions by optimizing agent efficacy and reducing patient burden.