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Crotoxin-Loaded Silica Nanoparticles: A Nanovenom Approach
Florencia Silvina Conti1,2, Exequiel Giorgi1,2, Laura Montaldo1,2
1Grupo de Investigaciones Básicas y Aplicadas en Inmunología y Bioactivos (GIBAIB, INEDES-CONICET), Departamento de Ciencias Básicas, Universidad Nacional de Luján (UNLu), Luján C6700, Argentina.
Pharmaceutics
|July 30, 2025
Summary
Researchers developed nanovenoms (NVs) from South American rattlesnake venom (CTX) and silica nanoparticles (SiNPs). These NVs show potential as adjuvants to improve antivenom production by enhancing immune responses.
Area of Science:
- Biotechnology
- Nanomedicine
- Immunology
Background:
- Ophidism, caused by snakebites, is a neglected global health issue.
- South American rattlesnake (Crotalus durissus terrificus) venom contains lethal crotoxin (CTX) with PLA2 activity.
- Current antivenom production requires enhancement for improved efficacy.
Purpose of the Study:
- To create nanovenoms (NVs) by adsorbing CTX onto silica nanoparticles (SiNPs).
- To evaluate the physicochemical, biological, and immunomodulatory properties of these NVs.
- To explore the potential of NVs as adjuvants in antivenom (AV) production.
Main Methods:
- Isolation and characterization of crotoxin (CTX) using SDS-PAGE.
- Synthesis of 150 nm silica nanoparticles (SiNPs) via Stöber method.
- Adsorption of CTX onto SiNPs to form NVs, with biological activity confirmed by MTT assay on THP-1 cells.
Main Results:
- Nanovenoms (NVs) and SiNPs induced a significant pro-inflammatory response (IL-1β).
- NVs showed significant differences in TGF-β levels post-LPS activation, indicating immunomodulatory effects.
- No significant changes were observed in IL-10 levels.
Conclusions:
- Nanovenoms (NVs) combined with silica nanoparticles (SiNPs) demonstrate potential to boost immunogenicity.
- These findings suggest NVs could serve as effective adjuvants for developing improved antivenoms.
- Further research into NVs may lead to novel strategies for treating ophidism.
