Genotoxicity of Nanocarriers

Area of Science:

• Nanotechnology
• Toxicology
• Drug Delivery

Background:

• Nanoparticle development for drug delivery has increased interest in nanocarrier genotoxicity.
• Standard genotoxicity assays are crucial for evaluating nanocarrier safety.

Purpose of the Study:

• To summarize studies on standard genotoxicity assays for nanocarriers.
• To highlight challenges in nanocarrier risk assessment.

Main Methods:

• PubMed/MEDLINE search of English-language publications.
• Inclusion of 45 studies on nanocarrier genotoxicity.
• Analysis of various in vitro and in vivo assays (Comet, micronucleus, chromosomal aberration, Ames, etc.).

Main Results:

• Genotoxicity assay results for nanocarriers were inconsistent.
• In vitro assays yielded more positive genotoxicity results than in vivo assays.
• Mutagenicity tests were predominantly negative, while DNA and chromosome damage assays showed mixed results.

Conclusions:

• Inconsistent genotoxicity data presents challenges for nanocarrier risk assessment.
• There is an urgent need for standardized genotoxicity measurement batteries.
• Future research should focus on developing reliable and standardized assays.