Biosensors & Bioelectronics

Karim Samy El-Said

Publications

• Research Article
  Effects of Toll-like Receptors 3 and 4 Induced by Titanium Dioxide Nanoparticles in DNA Damage-Detecting Sensor Cells
  Author(s): Karim Samy El-Said, Ehab Mostafa Ali, Koki Kanehira and Akiyoshi TaniguchiKarim Samy El-Said, Ehab Mostafa Ali, Koki Kanehira and Akiyoshi Taniguchi
  
  Live cell-based sensor reporter systems (so-called sensor cells) were employed to detect host defense systems, including DNA damage response, stimulated by nanoparticles (NPs). Our previous work established the use of DNA damage-detecting sensor cells containing the B-cell translocation gene 2(BTG2) promoter-reporter plasmid and showed that Toll-like receptors (TLRs) are involved in the cellular response and uptake of TiO2 NPs. These results suggested that TLRs could be involved in many cellular responses. However, the effect of TLRs on DNA damage induced by TiO2 NPs is unknown. Here we investigated the role of TLR 3 and 4 in DNA damage induced by PEG- 2 NPs reduces DNA damage response compared to unmodified TiO2 NPs. The overexpression of TLR3 reduces DNA damage mediated by both TiO2 and PEG-TiO2 NPs. In contrast, overexpression of TLR4 increases the DNA damage response induced by Ti.. Read More»
  DOI: 10.4172/2155-6210.1000144

  Abstract PDF