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|Scopus||Web of Science®||Altmetric|
|Title:||Comparison of two transmission electron microscopy methods to visualize drug-induced alterations of gram-negative bacterial morphology|
|Citation:||Antibiotics, 2021; 10(3):307-307|
|Hang Thi Nguyen, Lisa A. O’Donovan, Henrietta Venter, Cecilia C. Russell, Adam McCluskey, Stephen W. Page ... et al.|
|Abstract:||In this study, we optimized and compared different transmission electron microscopy (TEM) methods to visualize changes to Gram-negative bacterial morphology induced by treatment with a robenidine analogue (NCL195) and colistin combination. Aldehyde-fixed bacterial cells (untreated, treated with colistin or NCL195 + colistin) were prepared using conventional TEM methods and compared with ultrathin Tokuyasu cryo-sections. The results of this study indicate superiority of ultrathin cryo-sections in visualizing the membrane ultrastructure of Escherichia coli and Pseudomonas aeruginosa, with a clear delineation of the outer and inner membrane as well as the peptidoglycan layer. We suggest that the use of ultrathin cryo-sectioning can be used to better visualize and understand drug interaction mechanisms on the bacterial cell membrane.|
|Keywords:||Transmission electron microscopy; bacterial cell wall; bacterial membrane; Gram-negative bacteria; colistin; drug interaction; Tokuyasu cryo-ultramicrotomy|
|Rights:||© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https:// creativecommons.org/licenses/by/ 4.0/).|
|Appears in Collections:||Aurora harvest 8|
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