Lipopopeptidephosphoglycan from Entamoeba histolytica activates human macrophages and dendritic cells and reaches their late endosomes.

Abstract:

:Lipopopeptidephosphoglycan (LPPG) is a complex macromolecule from the surface of Entamoeba histolytica trophozoites. We analysed the interaction between LPPG and human macrophages and dendritic cells (DCs) and found that LPPG is internalized by these cells and activates them. The internalization process involves intracellular traffic from the cell membrane to late endosomes, as shown by co-localization of LPPG with late endosomes marked with FITC-dextran and LAMP-1. LPPG-activated DCs have increased expression of co-stimulatory molecules CD80, CD86 and CD40 and produce pro-inflammatory cytokines TNF-alpha, IL-8 and IL-12. Taken together, these results show that LPPG activates antigen-presenting cells and reaches intracellular compartments that are involved in antigen presentation.

journal_name

Parasite Immunol

journal_title

Parasite immunology

authors

Vivanco-Cid H,Alpuche-Aranda C,Wong-Baeza I,Rocha-Ramírez LM,Rios-Sarabia N,Estrada-Garcia I,Villasis-Keever MA,Lopez-Macias C,Isibasi A

doi

10.1111/j.1365-3024.2007.00963.x

subject

Has Abstract

pub_date

2007-09-01 00:00:00

pages

467-74

issue

9

eissn

0141-9838

issn

1365-3024

pii

PIM963

journal_volume

29

pub_type

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