Journal
BULLETIN OF THE KOREAN CHEMICAL SOCIETY
Volume 35, Issue 1, Pages 123-128Publisher
KOREAN CHEMICAL SOC
DOI: 10.5012/bkcs.2014.35.1.123
Keywords
Nanoparticles cytotoxicity; Image cytometry; Ag nanoparticle; Dynamic exposure conditions
Categories
Funding
- RD Program [10043929]
- Ministry of Trade, Industry, & Energy (MOTIE, Korea)
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In this study, we have investigated the flow rate effects of Ag nanoparticle (NP) suspensions on the progress of the cell cycle by using a microfluidic image cytometry (mu FIC)-based approach. Compared with the conventional static exposure conditions, enhancements in G2 phase arrest were observed for the cells under continuously flowing dynamic exposure conditions. The dynamic exposure conditions, which mimic in vivo systems, induced an enhanced cytotoxicity by accelerating G2 phase arrest and subsequent apoptosis processes. Moreover, we have also shown that the increases in delivered NP dose due to the continuous supply of Ag NPs contributed dominantly to the enhanced cytotoxicity observed under the dynamic exposure conditions, while the shear stress caused by these slowly flowing fluids (i.e., flow rates of 6 and 30 mu L/h) had only a minor influence on the observed enhancement in cytotoxicity
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