Design and Binding Affinity of Antisense Peptides for Snake Venom Neutralization

Area of Science:

• Biochemistry
• Toxicology
• Drug Discovery

Background:

• Snakebites represent a major global health concern, with existing antivenoms facing limitations like allergenicity and high costs.
• There is a critical need for novel therapeutic strategies to manage snakebite envenomation effectively.

Purpose of the Study:

• To investigate the potential of oligopeptides as inhibitors of ammodytoxin A (AtxA), a neurotoxin from *Vipera ammodytes*.
• To design and evaluate antisense oligopeptides targeting specific neurotoxic regions of AtxA.

Main Methods:

• Oligopeptides were designed using molecular recognition theory and synthesized.
• Binding affinities between sense and antisense peptides were measured using spectrofluorometric titrations.
• Global docking simulations were performed to assess potential binding to the native AtxA protein.

Main Results:

• All sense-antisense peptide pairs exhibited strong binding affinities, with dissociation constants (Kd) in the 1-10 μM range.
• Binding of synthesized peptides was confirmed, indicating successful molecular recognition.
• Docking simulations suggested potential interaction with the native target protein.

Conclusions:

• The study demonstrates the feasibility of using molecular recognition theory for designing antisense peptides.
• These findings suggest a potential new avenue for developing snakebite therapeutics.
• Further research is warranted to explore the therapeutic efficacy and applications of these peptides.