Protein & Peptide Encapsulation

The therapeutic landscape has been transformed by the rise of biologics. Proteins and peptides offer unparalleled specificity and high affinity for complex biological targets, often addressing diseases that are "undruggable" by small molecules. However, their clinical translation is frequently hindered by inherent vulnerabilities: rapid enzymatic degradation, poor membrane permeability, and physical instability.

Alfa Chemistry provides a specialized protein & peptide encapsulation service, leveraging advanced lipid-based nanotechnology to shield these delicate macromolecules. Our platform is designed to preserve the structural integrity of your cargo while optimizing its pharmacokinetic profile and delivery efficiency.

• Proteolytic Protection: Liposomes act as a steric shield, preventing proteases in systemic circulation from accessing and degrading the protein.
• Enhanced Stability: Our formulations mitigate common issues such as aggregation, denaturation, and precipitation under physiological pH and temperature.
• Improved Bioavailability: By modulating the lipid bilayer, we can enhance the permeability of proteins across biological barriers, enabling diverse administration routes (e.g., parenteral, pulmonary, or oral).
• Extended Half-Life: Liposomal sequestration reduces rapid renal clearance, allowing for a sustained therapeutic effect and reduced dosing frequency.

1. Specialized Liposomal Systems

We utilize a diverse library of lipids to create tailored vectors, including:

• Stealth Liposomes: PEGylated formulations for prolonged blood circulation.
• Cationic/Fusogenic Liposomes: Optimized for intracellular delivery and endosomal escape.
• Targeted Liposomes: Surface-functionalized with ligands to direct proteins to specific cell types or tissues.

2. Advanced Encapsulation Strategies

Encapsulating large, charged, or hydrophobic molecules requires precision. Our service includes:

• Formulation Optimization: Rigorous study of the relationship between lipid composition, buffer molarity, and incubation parameters to maximize encapsulation efficiency (EE).
• Structural Preservation: We employ "soft" processing techniques (such as extrusion or microfluidics) to ensure that the secondary and tertiary structures of complex enzymes and peptides remain intact.
• Detergent-Mediated Reconstitution: For membrane proteins, we provide high-purity detergents to stabilize the protein during the integration process into the lipid bilayer.