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Lipophosphoglycan polymorphisms do not affect Leishmania amazonensis development in the permissive vectors Lutzomyia migonei and Lutzomyia longipalpis.

Abstract：

BACKGROUND:Lipophosphoglycan (LPG) is a dominant surface molecule of Leishmania promastigotes. Its species-specific polymorphisms are found mainly in the sugars that branch off the conserved Gal(β1,4)Man(α1)-PO4 backbone of repeat units. Leishmania amazonensis is one of the most important species causing human cutaneous leishmaniasis in the New World. Here, we describe LPG intraspecific polymorphisms in two Le. amazonensis reference strains and their role during the development in three sand fly species. RESULTS:Strains isolated from Lutzomyia flaviscutellata (PH8) and from a human patient (Josefa) displayed structural polymorphism in the LPG repeat units, possessing side chains with 1 and 2 β-glucose or 1 to 3 β-galactose, respectively. Both strains successfully infected permissive vectors Lutzomyia longipalpis and Lutzomyia migonei and could colonize their stomodeal valve and differentiate into metacyclic forms. Despite bearing terminal galactose residues on LPG, Josefa could not sustain infection in the restrictive vector Phlebotomus papatasi. CONCLUSIONS:LPG polymorphisms did not affect the ability of Le. amazonensis to develop late-stage infections in permissive vectors. However, the non-establishment of infection in Ph. papatasi by Josefa strain suggested other LPG-independent factors in this restrictive vector.

journal_name

Parasit Vectors

journal_title

Parasites & vectors

authors

Nogueira PM,Guimarães AC,Assis RR,Sadlova J,Myskova J,Pruzinova K,Hlavackova J,Turco SJ,Torrecilhas AC,Volf P,Soares RP

doi

10.1186/s13071-017-2568-8

subject

Has Abstract

pub_date

2017-12-16 00:00:00

pages

608

issue

1

issn

1756-3305

pii

10.1186/s13071-017-2568-8

journal_volume

10

pub_type

杂志文章

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