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Amperometric microsensors monitoring glutamate-evoked in situ responses of nitric oxide and carbon monoxide from live human neuroblastoma cells

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Title
Amperometric microsensors monitoring glutamate-evoked in situ responses of nitric oxide and carbon monoxide from live human neuroblastoma cells
Author(s)
Yejin Ha; Chaejeong Heo; Juhyun Woo; Hyunwoo Ryu; Youngmi Lee; Minah Suh
Publication Date
2017-07
Journal
SENSORS, v.17, no.7, pp.1661 -
Abstract
In the brain, nitric oxide (NO) and carbon monoxide (CO) are important signaling gases which have multifaceted roles, such as neurotransmitters, neuromodulators, and vasodilators. Even though it is difficult to measure NO and CO in a living system due to their high diffusibility and extremely low release levels, electrochemical sensors are promising tools to measure in vivo and in vitro NO and CO gases. In this paper, using amperometric dual and septuple NO/CO microsensors, real-time NO and CO changes evoked by glutamate were monitored simultaneously for human neuroblastoma (SH-SY5Y) cells. In cultures, the cells were differentiated and matured into functional neurons by retinoic acid and brain-derived neurotrophic factor. When glutamate was administrated to the cells, both NO and CO increases and subsequent decreases returning to the basal levels were observed with a dual NO/CO microsensor. In order to facilitate sensor’s measurement, a flower-type septuple NO/CO microsensor was newly developed and confirmed in terms of the sensitivity and selectivity. The septuple microsensor was employed for the measurements of NO and CO changes as a function of distances from the position of glutamate injection. Our sensor measurements revealed that only functionally differentiated cells responded to glutamate and released NO and CO. © 2017 by the authors. Licensee MDPI, Basel, Switzerland
URI
http://pr.ibs.re.kr/handle/8788114/3824
DOI
10.3390/s17071661
ISSN
1424-8220
Appears in Collections:
Center for Neuroscience Imaging Research (뇌과학 이미징 연구단) > Journal Papers (저널논문)
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