Application and drying of protein drug microdroplets on solid surfaces

Area of Science:

• Pharmaceutical Sciences
• Biotechnology
• Materials Science

Background:

• Protein-based therapeutics require stable formulations for effective delivery.
• Current methods for applying protein drugs can be inefficient or lack precision.
• Controlled release mechanisms are crucial for optimizing therapeutic outcomes.

Purpose of the Study:

• To develop and optimize a novel method for precise application and drying of protein drug microdroplets.
• To investigate the impact of process parameters on protein stability and residual moisture.
• To explore the potential for controlled release via spray coating of dried microdroplets.

Main Methods:

• Utilized a robotic dispensing system to generate and deposit 20-mL protein solution microdroplets onto various surfaces.
• Employed vacuum drying to reduce residual moisture in the protein/excipient matrix.
• Optionally applied spray coating to achieve controlled release characteristics.

Main Results:

• Successfully demonstrated precise deposition of protein microdroplets.
• Optimized process parameters for minimizing residual moisture and maximizing protein stability.
• Validated the potential for controlled release formulation through spray coating.

Conclusions:

• The developed robotic microdroplet application and drying method offers a precise and stable approach for protein drug formulation.
• This technique holds promise for enhancing the stability and enabling controlled release of protein therapeutics.
• Further optimization can lead to advanced drug delivery systems with improved patient compliance and efficacy.