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Article

A Novel Hybrid Platform for Live/Dead Bacteria Accurate Sorting by On-Chip DEP Device

by
Annarita di Toma
1,
Giuseppe Brunetti
1,
Maria Serena Chiriacò
2,
Francesco Ferrara
2 and
Caterina Ciminelli
1,*
1
Optoelectronics Laboratory, Politecnico di Bari, Via E. Orabona 6, 70125 Bari, Italy
2
CNR NANOTEC—Institute of Nanotechnology, Via per Monteroni, 73100 Lecce, Italy
*
Author to whom correspondence should be addressed.
Int. J. Mol. Sci. 2023, 24(8), 7077; https://doi.org/10.3390/ijms24087077
Submission received: 10 March 2023 / Revised: 23 March 2023 / Accepted: 5 April 2023 / Published: 11 April 2023
(This article belongs to the Special Issue Antimicrobial Resistance—New Insights 2.0)

Abstract

According to the World Health Organization (WHO) forecasts, Antimicrobial Resistance (AMR) will be the leading cause of death worldwide in the next decades. To prevent this phenomenon, rapid Antimicrobial Susceptibility Testing (AST) techniques are required to drive the selection of the most suitable antibiotic and its dosage. In this context, we propose an on-chip platform, based on a micromixer and a microfluidic channel, combined with a pattern of engineered electrodes to exploit the di-electrophoresis (DEP) effect. The role of the micromixer is to ensure the proper interaction of the antibiotic with the bacteria over a long time (≈1 h), and the DEP-based microfluidic channel enables the efficient sorting of live from dead bacteria. A sorting efficiency of more than 98%, with low power consumption (Vpp = 1 V) and time response of 5 s, within a chip footprint of ≈86 mm2, has been calculated, which makes the proposed system very attractive and innovative for efficient and rapid monitoring of the antimicrobial susceptibility at the single-bacterium level in next-generation medicine.
Keywords: di-electrophoresis; Escherichia coli; microfluidics; antimicrobial susceptibility testing; chip-scale platform di-electrophoresis; Escherichia coli; microfluidics; antimicrobial susceptibility testing; chip-scale platform

Share and Cite

MDPI and ACS Style

di Toma, A.; Brunetti, G.; Chiriacò, M.S.; Ferrara, F.; Ciminelli, C. A Novel Hybrid Platform for Live/Dead Bacteria Accurate Sorting by On-Chip DEP Device. Int. J. Mol. Sci. 2023, 24, 7077. https://doi.org/10.3390/ijms24087077

AMA Style

di Toma A, Brunetti G, Chiriacò MS, Ferrara F, Ciminelli C. A Novel Hybrid Platform for Live/Dead Bacteria Accurate Sorting by On-Chip DEP Device. International Journal of Molecular Sciences. 2023; 24(8):7077. https://doi.org/10.3390/ijms24087077

Chicago/Turabian Style

di Toma, Annarita, Giuseppe Brunetti, Maria Serena Chiriacò, Francesco Ferrara, and Caterina Ciminelli. 2023. "A Novel Hybrid Platform for Live/Dead Bacteria Accurate Sorting by On-Chip DEP Device" International Journal of Molecular Sciences 24, no. 8: 7077. https://doi.org/10.3390/ijms24087077

APA Style

di Toma, A., Brunetti, G., Chiriacò, M. S., Ferrara, F., & Ciminelli, C. (2023). A Novel Hybrid Platform for Live/Dead Bacteria Accurate Sorting by On-Chip DEP Device. International Journal of Molecular Sciences, 24(8), 7077. https://doi.org/10.3390/ijms24087077

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