Genome Stability Profiles of Titania Nanosurface Technology for Biomedical Applications

The emergence of nano-based products for advanced biomedical applications has underlined the need for toxicogenomic studies which govern genome stability endpoints. In the present study, the genome stability profiles on cell-TNA interaction were assessed via nuclear staining profile by a fluorescent microscope, DNA ploidy profile by flow-cytometry, metaphase chromosome analysis, DNA topoisomerase II alpha (TOP2A) profiling by chromogenic in situ hybridization (CISH), cytokinesis-blocked micronucleus assay (CBMN), reactive oxygen species (ROS) measurement and gene expression profile by real-time polymerase chain reaction (RT-PCR). Findings from this study demonstrated that no significant genomic instability risk was observed from cell-TNA interaction, especially at clastogenic and aneugenic levels. Findings also suggest that cell-TNA interaction could involve the regulation of ribonucleoprotein complex and cell metabolism associated with the cellular adaptation process towards the nanosurface. Further comprehensive studies involving in vivo models are needed to support this work.