Document Detail

The diverse and dynamic nature of Leishmania parasitophorous vacuoles studied by multidimensional imaging.
MedLine Citation:
PMID:  22348167     Owner:  NLM     Status:  MEDLINE    
An important area in the cell biology of intracellular parasitism is the customization of parasitophorous vacuoles (PVs) by prokaryotic or eukaryotic intracellular microorganisms. We were curious to compare PV biogenesis in primary mouse bone marrow-derived macrophages exposed to carefully prepared amastigotes of either Leishmania major or L. amazonensis. While tight-fitting PVs are housing one or two L. major amastigotes, giant PVs are housing many L. amazonensis amastigotes. In this study, using multidimensional imaging of live cells, we compare and characterize the PV biogenesis/remodeling of macrophages i) hosting amastigotes of either L. major or L. amazonensis and ii) loaded with Lysotracker, a lysosomotropic fluorescent probe. Three dynamic features of Leishmania amastigote-hosting PVs are documented: they range from i) entry of Lysotracker transients within tight-fitting, fission-prone L. major amastigote-housing PVs; ii) the decrease in the number of macrophage acidic vesicles during the L. major PV fission or L. amazonensis PV enlargement; to iii) the L. amazonensis PV remodeling after homotypic fusion. The high content information of multidimensional images allowed the updating of our understanding of the Leishmania species-specific differences in PV biogenesis/remodeling and could be useful for the study of other intracellular microorganisms.
Fernando Real; Renato A Mortara
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2012-02-14
Journal Detail:
Title:  PLoS neglected tropical diseases     Volume:  6     ISSN:  1935-2735     ISO Abbreviation:  PLoS Negl Trop Dis     Publication Date:  2012  
Date Detail:
Created Date:  2012-02-20     Completed Date:  2012-06-22     Revised Date:  2013-06-26    
Medline Journal Info:
Nlm Unique ID:  101291488     Medline TA:  PLoS Negl Trop Dis     Country:  United States    
Other Details:
Languages:  eng     Pagination:  e1518     Citation Subset:  IM    
Department of Microbiology, Immunology and Parasitology, Escola Paulista de Medicina, UNIFESP, São Paulo, Brazil.
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MeSH Terms
Cells, Cultured
Cytological Techniques / methods*
Image Processing, Computer-Assisted / methods*
Leishmania major / pathogenicity*
Leishmania mexicana / pathogenicity*
Macrophages / parasitology*
Mice, Inbred BALB C
Parasitology / methods
Vacuoles / parasitology*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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