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@ARTICLE{Huck:150605,
author = {Huck, Christina and Schiffels, Johannes and Herrera, Cony
N. and Schelden, Maximilian and Selmer, Thorsten and
Poghossian, Arshak and Baumann, Marcus E. M. and Wagner,
Patrick and Schöning, Michael J.},
title = {{M}etabolic responses of {E}scherichia coli upon glucose
pulses captured by a capacitive field-effect sensor.},
journal = {Physica status solidi / A},
volume = {210},
number = {5},
issn = {1862-6300},
address = {Weinheim},
publisher = {Wiley-VCH},
reportid = {FZJ-2014-00654},
pages = {926 - 931},
year = {2013},
abstract = {Living cells are complex biological systems transforming
metabolites taken up from the surrounding medium. Monitoring
the responses of such cells to certain substrate
concentrations is a challenging task and offers
possibilities to gain insight into the vitality of a
community influenced by the growth environment. Cell-based
sensors represent a promising platform for monitoring the
metabolic activity and thus, the ‘‘welfare’’ of
relevant organisms. In the present study, metabolic
responses of the model bacterium Escherichia coli in
suspension, layered onto a capacitive field-effect
structure, were examined to pulses of glucose in the
concentration range between 0.05 and 2 mM. It was found that
acidification of the surrounding medium takes place
immediately after glucose addition and follows Michaelis–
Menten kinetic behavior as a function of the glucose
concentration. In future, the presented setup can,
therefore, be used to study substrate specificities on the
enzymatic level and may as well be used to perform
investigations of more complex metabolic responses.
Conclusions and perspectives highlighting this system are
discussed.},
cin = {PGI-8 / JARA-FIT / ICS-8},
ddc = {530},
cid = {I:(DE-Juel1)PGI-8-20110106 / $I:(DE-82)080009_20140620$ /
I:(DE-Juel1)ICS-8-20110106},
pnm = {423 - Sensorics and bioinspired systems (POF2-423) / 453 -
Physics of the Cell (POF2-453)},
pid = {G:(DE-HGF)POF2-423 / G:(DE-HGF)POF2-453},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000319151900016},
doi = {10.1002/pssa.201200900},
url = {https://juser.fz-juelich.de/record/150605},
}