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Methods Cell Biol. 2015;127:509-42. doi: 10.1016/bs.mcb.2014.12.011. Epub 2015 Mar 7.

Scanning and three-dimensional electron microscopy methods for the study of Trypanosoma brucei and Leishmania mexicana flagella.

Author information

1
Sir William Dunn School of Pathology, University of Oxford, Oxford, UK.
2
Department of Biological and Medical Sciences, Oxford Brookes University, Oxford, UK.

Abstract

Three-dimensional electron microscopy tools have revolutionized our understanding of cell structure and molecular complexes in biology. Here, we describe methods for studying flagellar ultrastructure and biogenesis in two unicellular parasites-Trypanosoma brucei and Leishmania mexicana. We describe methods for the preparation of these parasites for scanning electron microscopy cellular electron tomography, and serial block face scanning electron microscopy (SBFSEM). These parasites have a highly ordered cell shape and form, with a defined positioning of internal cytoskeletal structures and organelles. We show how knowledge of these can be used to dissect cell cycles in both parasites and identify the old flagellum from the new in T. brucei. Finally, we demonstrate the use of SBFSEM three-dimensional models for analysis of individual whole cells, demonstrating the excellent potential this technique has for future studies of mutant cell lines.

KEYWORDS:

Axoneme; Basal body; Electron tomography; Flagellum; Leishmania; SBFSEM; SEM; Trypanosoma

PMID:
25837406
PMCID:
PMC4419368
DOI:
10.1016/bs.mcb.2014.12.011
[Indexed for MEDLINE]
Free PMC Article
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