Hochstetter, A. , Stellamanns, E., Deshpande, S., Heddergott, N., Engstler, M. and Pfohl, T. (2015) Microfluidics-based single cell analysis reveals drug-dependent motility changes in trypanosomes. Lab on a Chip, 15, pp. 1961-1968. (doi: 10.1039/C5LC00124B) (PMID:25756872)
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Abstract
We present a single cell viability assay, based on chemical gradient microfluidics in combination with optical micromanipulation. Here, we used this combination to in situ monitor the effects of drugs and chemicals on the motility of the flagellated unicellular parasite Trypanosoma brucei;specifically, thelocal cell velocity and the mean squared displacement (MSD) of the cell trajectories. With our method, we are able to record in situ cell fixation by glutaraldehyde, and to quantify the critical concentration of 2-deoxy-D-glucose required to completely paralyze trypanosomes. In addition, we detected and quantified the impact on cell propulsion and energy generation at much lower 2-deoxy-D-glucose concentrations. Our microfluidics-based approach advances fast cell-based drug testing in a way that allows us to distin- guish cytocidal from cytostatic drug effects, screen effective dosages, and investigate the impact on cell motility of drugs and chemicals. Using suramin, we could reveal the impact of the widely used drug on try- panosomes: suramin lowers trypanosome motility and induces cell-lysis after endocytosis.
| Item Type: | Articles |
|---|---|
| Additional Information: | We gratefully acknowledge funding from the DFG within the priority program SPP1207 (EN305/4, PF375/5) and from the SNF 200020_141270. |
| Status: | Published |
| Refereed: | Yes |
| Glasgow Author(s) Enlighten ID: | Hochstetter, Dr Axel |
| Authors: | Hochstetter, A., Stellamanns, E., Deshpande, S., Heddergott, N., Engstler, M., and Pfohl, T. |
| College/School: | College of Science and Engineering > School of Engineering |
| Journal Name: | Lab on a Chip |
| Publisher: | Royal Society of Chemistry |
| ISSN: | 1473-0197 |
| ISSN (Online): | 1473-0189 |
| Data DOI: | 10.1039/ c5lc00124b |
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