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Open AccessArticle

Development of Sensor Cells Using NF-κB Pathway Activation for Detection of Nanoparticle-Induced Inflammation

1
Cell-Materials Interaction Group, Biomaterials Unit, Nano-Bio Field, National Institute for Materials Science, 1-1, Namiki, Tsukuba, Ibaraki, 305-0044, Japan
2
Graduate School of Advanced Science and Engineering, Waseda University, 3-4-1 Okubo, Shinjuku, Tokyo 169-8555, Japan
3
TOTO Ltd. Research Institute, Nakashima 2-1-1, Kokurakita, Kitakyushu, 802-8601, Japan
*
Author to whom correspondence should be addressed.
Sensors 2011, 11(7), 7219-7230; https://doi.org/10.3390/s110707219
Received: 10 June 2011 / Revised: 8 July 2011 / Accepted: 12 July 2011 / Published: 18 July 2011
(This article belongs to the Special Issue Live Cell-Based Sensors)
The increasing use of nanomaterials in consumer and industrial products has aroused concerns regarding their fate in biological systems. An effective detection method to evaluate the safety of bio-nanomaterials is therefore very important. Titanium dioxide (TiO2), which is manufactured worldwide in large quantities for use in a wide range of applications, including pigment and cosmetic manufacturing, was once thought to be an inert material, but recently, more and more studies have indicated that TiO2 nanoparticles (TiO2 NPs) can cause inflammation and be harmful to humans by causing lung and brain problems. In order to evaluate the safety of TiO2 NPs for the environment and for humans, sensor cells for inflammation detection were developed, and these were transfected with the Toll-like receptor 4 (TLR4) gene and Nuclear Factor Kappa B (NF-κB) reporter gene. NF-κB as a primary cause of inflammation has received a lot of attention, and it can be activated by a wide variety of external stimuli. Our data show that TiO2 NPs-induced inflammation can be detected by our sensor cells through NF-κB pathway activation. This may lead to our sensor cells being used for bio-nanomaterial safety evaluation. View Full-Text
Keywords: sensor cells; TiO2 nanoparticles agglomerates; inflammation; NF-κB; Toll-like receptor4 sensor cells; TiO2 nanoparticles agglomerates; inflammation; NF-κB; Toll-like receptor4
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Chen, P.; Migita, S.; Kanehira, K.; Sonezaki, S.; Taniguchi, A. Development of Sensor Cells Using NF-κB Pathway Activation for Detection of Nanoparticle-Induced Inflammation. Sensors 2011, 11, 7219-7230.

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