Crotamine Cell-Penetrating Nanocarriers: Cancer-Targeting and Potential Biotechnological and/or Medical Applications

Area of Science:

• Biochemistry
• Molecular Biology
• Nanotechnology

Background:

• Crotamine, a basic polypeptide from snake venom, exhibits cell-penetrating properties.
• Understanding crotamine's interactions with nucleic acids is crucial for developing novel drug delivery systems.

Purpose of the Study:

• To prepare, purify, and analyze various forms of crotamine.
• To investigate the formation and characterization of crotamine-nucleic acid nanoparticles.
• To evaluate the therapeutic potential of crotamine-based nanoparticles for targeted delivery.

Main Methods:

• Preparation and purification of venom-derived, recombinant, and synthetic crotamine.
• Biochemical and biophysical characterization of crotamine and its complexes.
• Formation and characterization of crotamine-DNA and crotamine-RNA nanoparticles.
• In vitro and in vivo studies of nanoparticle delivery into cells and organisms.
• Evaluation of crotamine-functionalized gold and silica nanoparticles.

Main Results:

• Crotamine successfully formed nanoparticles with DNA and RNA molecules.
• Crotamine-plasmid DNA nanoparticles selectively targeted proliferating cells in vitro and in vivo (mice, Plasmodium, worms).
• Crotamine-functionalized gold nanoparticles were delivered into cells.
• Crotamine-silica nanoparticle combinations showed potential for slow delivery and reduced dosage.
• Oral administration of crotamine demonstrated efficacy.

Conclusions:

• Crotamine-nucleic acid nanoparticles represent a promising platform for targeted nucleic acid drug delivery.
• Crotamine-based nanoparticles offer versatile applications in various biological systems.
• Further development of crotamine-based delivery systems could lead to improved therapeutic strategies.