<i>Entamoeba histolytica</i> Trophozoites Interact with the c-Met Receptor at the Surface of Liver Origin Cells through the Gal/GalNAc Amoebic Lectin

Amoebiasis in humans is caused by the protozoan parasite <i>Entamoeba histolytica,</i> which cytotoxic activity has been demonstrated on a wide variety of target cells. The process involves the adherence of the parasite to the cell, and such adherence is mediated by an amoebic surface le...

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Main Authors: Jesus Pérez-Hernández, Clarisa Retana-González, Espiridión Ramos-Martínez, José Cruz-Colín, Andrés Saralegui-Amaro, Gabriela Baltazar-Rosario, Concepción Gutiérrez-Ruíz, Gerardo Aristi-Urista, Rosario López-Vancell
Format: Article
Language:English
Published: MDPI AG 2021-09-01
Series:Life
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Online Access:https://www.mdpi.com/2075-1729/11/9/923
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author Jesus Pérez-Hernández
Clarisa Retana-González
Espiridión Ramos-Martínez
José Cruz-Colín
Andrés Saralegui-Amaro
Gabriela Baltazar-Rosario
Concepción Gutiérrez-Ruíz
Gerardo Aristi-Urista
Rosario López-Vancell
author_facet Jesus Pérez-Hernández
Clarisa Retana-González
Espiridión Ramos-Martínez
José Cruz-Colín
Andrés Saralegui-Amaro
Gabriela Baltazar-Rosario
Concepción Gutiérrez-Ruíz
Gerardo Aristi-Urista
Rosario López-Vancell
author_sort Jesus Pérez-Hernández
collection DOAJ
description Amoebiasis in humans is caused by the protozoan parasite <i>Entamoeba histolytica,</i> which cytotoxic activity has been demonstrated on a wide variety of target cells. The process involves the adherence of the parasite to the cell, and such adherence is mediated by an amoebic surface lectin, known as Gal/GalNAc lectin. It is composed of heavy, intermediate, and light subunits. The carbohydrate recognition domain (CRD) has been identified within a cysteine-rich region in the lectin heavy subunit and has an amino acid sequence identity to the receptor-binding domain of hepatocyte growth factor (HGF). Recombinant CRD has been previously shown to compete with HGF for binding to the c-Met receptor IgG fusion protein. In the present study, we searched for evidence of interaction between the Gal/GalNAc lectin at the surface of trophozoites with the c-Met receptor expressed at the surface of HepG2 in coculture assays. Immunoprecipitation of the coculture lysate indicated interaction of the c-Met with a 60 kDa peptide recognized by antiamoebic lectin antibody. Colocalization of both molecules was detected by fluorescence confocal microscopy. Incubation of HepG2 cells with HGF before coculture with trophozoites prevents the cytotoxic effect caused by the parasites but not their adherence to the cells. Our results point to Gal/GalNAc lectin as a ligand of the c-Met receptor at the surface of HepG2 cells.
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spelling doaj.art-982683c34650415682b1ccae8b1facd42023-11-22T13:55:58ZengMDPI AGLife2075-17292021-09-0111992310.3390/life11090923<i>Entamoeba histolytica</i> Trophozoites Interact with the c-Met Receptor at the Surface of Liver Origin Cells through the Gal/GalNAc Amoebic LectinJesus Pérez-Hernández0Clarisa Retana-González1Espiridión Ramos-Martínez2José Cruz-Colín3Andrés Saralegui-Amaro4Gabriela Baltazar-Rosario5Concepción Gutiérrez-Ruíz6Gerardo Aristi-Urista7Rosario López-Vancell8Experimental Pathology Laboratory, Research Unit in Experimental Medicine, School of Medicine, National Autonomous University of Mexico, Mexico City 04519, MexicoExperimental Pathology Laboratory, Research Unit in Experimental Medicine, School of Medicine, National Autonomous University of Mexico, Mexico City 04519, MexicoExperimental Pathology Laboratory, Research Unit in Experimental Medicine, School of Medicine, National Autonomous University of Mexico, Mexico City 04519, MexicoNational Institute of Genomic Medicine, Mexico City 14610, MexicoNational Laboratory for Advanced Microscopy, Institute of Biotechnology, National Autonomous University of Mexico, Cuernavaca, Morelos 62210, MexicoExperimental Pathology Laboratory, Research Unit in Experimental Medicine, School of Medicine, National Autonomous University of Mexico, Mexico City 04519, MexicoCellular Physiology Laboratory, Biological and Health Sciences Division, Metropolitan Autonomous University, Mexico City 09340, MexicoPathology Service, General Hospital of Mexico “Dr. Eduardo Liceaga”, School of Medicine, UNAM (National Autonomous University of Mexico), Mexico City 06720, MexicoExperimental Pathology Laboratory, Research Unit in Experimental Medicine, School of Medicine, National Autonomous University of Mexico, Mexico City 04519, MexicoAmoebiasis in humans is caused by the protozoan parasite <i>Entamoeba histolytica,</i> which cytotoxic activity has been demonstrated on a wide variety of target cells. The process involves the adherence of the parasite to the cell, and such adherence is mediated by an amoebic surface lectin, known as Gal/GalNAc lectin. It is composed of heavy, intermediate, and light subunits. The carbohydrate recognition domain (CRD) has been identified within a cysteine-rich region in the lectin heavy subunit and has an amino acid sequence identity to the receptor-binding domain of hepatocyte growth factor (HGF). Recombinant CRD has been previously shown to compete with HGF for binding to the c-Met receptor IgG fusion protein. In the present study, we searched for evidence of interaction between the Gal/GalNAc lectin at the surface of trophozoites with the c-Met receptor expressed at the surface of HepG2 in coculture assays. Immunoprecipitation of the coculture lysate indicated interaction of the c-Met with a 60 kDa peptide recognized by antiamoebic lectin antibody. Colocalization of both molecules was detected by fluorescence confocal microscopy. Incubation of HepG2 cells with HGF before coculture with trophozoites prevents the cytotoxic effect caused by the parasites but not their adherence to the cells. Our results point to Gal/GalNAc lectin as a ligand of the c-Met receptor at the surface of HepG2 cells.https://www.mdpi.com/2075-1729/11/9/923Gal/GalNAc lectin<i>Entamoeba histolytica</i> cytotoxicityc-Met receptor
spellingShingle Jesus Pérez-Hernández
Clarisa Retana-González
Espiridión Ramos-Martínez
José Cruz-Colín
Andrés Saralegui-Amaro
Gabriela Baltazar-Rosario
Concepción Gutiérrez-Ruíz
Gerardo Aristi-Urista
Rosario López-Vancell
<i>Entamoeba histolytica</i> Trophozoites Interact with the c-Met Receptor at the Surface of Liver Origin Cells through the Gal/GalNAc Amoebic Lectin
Life
Gal/GalNAc lectin
<i>Entamoeba histolytica</i> cytotoxicity
c-Met receptor
title <i>Entamoeba histolytica</i> Trophozoites Interact with the c-Met Receptor at the Surface of Liver Origin Cells through the Gal/GalNAc Amoebic Lectin
title_full <i>Entamoeba histolytica</i> Trophozoites Interact with the c-Met Receptor at the Surface of Liver Origin Cells through the Gal/GalNAc Amoebic Lectin
title_fullStr <i>Entamoeba histolytica</i> Trophozoites Interact with the c-Met Receptor at the Surface of Liver Origin Cells through the Gal/GalNAc Amoebic Lectin
title_full_unstemmed <i>Entamoeba histolytica</i> Trophozoites Interact with the c-Met Receptor at the Surface of Liver Origin Cells through the Gal/GalNAc Amoebic Lectin
title_short <i>Entamoeba histolytica</i> Trophozoites Interact with the c-Met Receptor at the Surface of Liver Origin Cells through the Gal/GalNAc Amoebic Lectin
title_sort i entamoeba histolytica i trophozoites interact with the c met receptor at the surface of liver origin cells through the gal galnac amoebic lectin
topic Gal/GalNAc lectin
<i>Entamoeba histolytica</i> cytotoxicity
c-Met receptor
url https://www.mdpi.com/2075-1729/11/9/923
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