Bergner, Stefan and Wegener, Joachim and Matysik, Frank-Michael (2011) Simultaneous Imaging and Chemical Attack of a Single Living Cell within a Confluent Cell Mono layer by Means of Scanning Electrochemical Microscopy. ANALYTICAL CHEMISTRY, 83 (1). pp. 169-174. ISSN 0003-2700, 1520-6882
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Epithelial cell monolayers from rat kidney were imaged by scanning electrochemical microscopy (SECM) with sub-micrometer resolution in both lateral and vertical direction. Platinum disk ultra-microelectrodes (UMEs) with effective electrode radii between 200 and 600 nm were operated in the constant-height mode. The quality of the recorded SECM images compare favorably with those of phase contrast and confocal laser scanning microscopy. Besides the acquisition of SECM images, the UME was used to selectively attack a single living cell within the monolayer ensemble. Hydroxide ions were locally generated in the vicinity of a single target cell by the UME. The increase in pH induced cell necrosis that was subsequently imaged by SECM. It could be clearly demonstrated that the single target cell was selectively affected, whereas the adjacent reference cells remained unchanged.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | ATOMIC-FORCE MICROSCOPY; HIGH-RESOLUTION; RESPIRATORY ACTIVITY; ACTIVE SURFACES; MODEL NEURONS; HELA-CELLS; PROBES; FABRICATION; SECM; MICROELECTRODES; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Instrumentelle Analytik (Prof. Frank-Michael Matysik) Chemistry and Pharmacy > Institut für Analytische Chemie, Chemo- und Biosensorik > Bioanalytik und Biosensorik (Prof. Joachim Wegener) |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 29 Jun 2020 06:54 |
| Last Modified: | 29 Jun 2020 06:54 |
| URI: | https://pred.uni-regensburg.de/id/eprint/21465 |
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