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Highly sensitive and selective odorant sensor using living cells expressing insect olfactory receptors.

ABSTRACT: This paper describes a highly sensitive and selective chemical sensor using living cells (Xenopus laevis oocytes) within a portable fluidic device. We constructed an odorant sensor whose sensitivity is a few parts per billion in solution and can simultaneously distinguish different types of chemicals that have only a slight difference in double bond isomerism or functional group such as -OH, -CHO and -C(=O)-. We developed a semiautomatic method to install cells to the fluidic device and achieved stable and reproducible odorant sensing. In addition, we found that the sensor worked for multiple-target chemicals and can be integrated with a robotic system without any noise reduction systems. Our developed sensor is compact and easy to replace in the system. We believe that the sensor can potentially be incorporated into a portable system for monitoring environmental and physical conditions.

SUBMITTER: Misawa N

PROVIDER: S-EPMC2932598 | biostudies-literature | 2010 Aug

REPOSITORIES: biostudies-literature

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Highly sensitive and selective odorant sensor using living cells expressing insect olfactory receptors.

Misawa Nobuo N Mitsuno Hidefumi H Kanzaki Ryohei R Takeuchi Shoji S

Proceedings of the National Academy of Sciences of the United States of America 20100823 35

This paper describes a highly sensitive and selective chemical sensor using living cells (Xenopus laevis oocytes) within a portable fluidic device. We constructed an odorant sensor whose sensitivity is a few parts per billion in solution and can simultaneously distinguish different types of chemicals that have only a slight difference in double bond isomerism or functional group such as -OH, -CHO and -C(=O)-. We developed a semiautomatic method to install cells to the fluidic device and achieved ...[more]

PMID: 20798064

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