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Cited by 272

The DOI matches its Crossref record; 39 of the 39 references it cites were found in a registry or an index.

The role(s) of lipophosphoglycan (LPG) in the establishment of Leishmania major infections in mammalian hosts

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Späth, Gerald F., Garraway, L. A., Turco, Salvatore J., Beverley, Stephen M.·2003·Proceedings of the National Academy of Sciences

Abstract

The abundant cell surface glycolipid lipophosphoglycan (LPG) was implicated in many steps of the Leishmania infectious cycle by biochemical tests. The presence of other abundant surface or secreted glycoconjugates sharing LPG domains, however, has led to uncertainty about the relative contribution of LPG in vivo . Here we used an Leishmania major lpg1 - mutant, which lacks LPG alone and shows attenuated virulence, to dissect the role of LPG in the establishment of macrophage infections in vivo. lpg1 - was highly susceptible to human complement, had lost the ability to inhibit phagolysosomal fusion transiently, and was oxidant sensitive. Studies of mouse mutants defective in relevant defense mechanisms confirmed the role of LPG in oxidant resistance but called into question the importance of transient inhibition of phagolysosomal fusion for Leishmania macrophage survival. Moreover, the limited lytic activity of mouse complement appears to be an ineffective pathogen defense mechanism in vitro and in vivo , unlike human hosts. In contrast, lpg1 - parasites bound C3b and resisted low pH and proteases normally, entered macrophages efficiently and silently, and continued to inhibit host-signaling pathways. These studies illustrate the value of mechanistic approaches focusing on both parasite and host defense pathways in dissecting the specific biological roles of complex virulence factors such as LPG.

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Metadata

Authors
Späth, G. F., Garraway, L. A., Turco, S. J., & Beverley, S. M.
Venue
Proceedings of the National Academy of Sciences
Published
2003-07-17
Volume
100
Issue
16
Pages
9536-9541
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2018138443
Cited by
272
References
39
FWCI
15.17
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: The role(s) of lipophosphoglycan (LPG) in the establishment of Leishmania major infections in mammalian hosts. https://app.cochat.ai/papers/10.1073/pnas.1530604100
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Späth, G. F., Garraway, L. A., Turco, S. J., & Beverley, S. M. (2003). The role(s) of lipophosphoglycan (LPG) in the establishment of Leishmania major infections in mammalian hosts. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.1530604100

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