[Immunomodulating properties of immobilized terrilytin]

Area of Science:

• Immunology
• Biochemistry
• Biomaterials

Background:

• Terrilytin, a proteolytic enzyme, has shown immunomodulatory potential.
• Drug delivery systems can alter enzyme pharmacokinetics and efficacy.
• Dextran immobilization is a common strategy for enzyme stabilization and controlled release.

Purpose of the Study:

• To investigate the impact of immobilizing terrilytin on dextran on the humoral immune response.
• To compare the efficacy of immobilized terrilytin with free terrilytin.
• To determine the optimal timing for administering immobilized and free terrilytin for immune stimulation.

Main Methods:

• Terrilytin was immobilized on dextran.
• Humoral immune response to a T-dependent antigen was assessed in the presence of free and immobilized terrilytin.
• Delayed type hypersensitivity was measured.
• Different administration timings (before immunization and during the inductive phase) were evaluated.

Main Results:

• Immobilized terrilytin demonstrated a higher and more prolonged stimulating effect on humoral immunity compared to free terrilytin.
• Administration during the inductive phase of the immune response yielded more pronounced effects for both immobilized and free terrilytin.
• Both forms of terrilytin exhibited analogous effects on delayed type hypersensitivity development.

Conclusions:

• Dextran immobilization enhances the immunomodulatory properties of terrilytin.
• Timing of administration is critical for maximizing the immune-stimulating effects of terrilytin.
• Immobilized terrilytin represents a promising approach for enhancing immune responses.