Reactivity of Trypanosoma cruzi strains with peanut agglutinin (PNA) correlates with number of in vitro infected host cells
Acta Tropica
; 61(1): 41-50, 1996.
Article
in English
| Sec. Est. Saúde SP, SESSP-IBPROD, Sec. Est. Saúde SP, SESSP-IBACERVO
| ID: biblio-1059339
Responsible library:
BR78.1
Localization: BR78.1
ABSTRACT
Reactivities of 4 lectins with intact trypomastigote forms derived from 8 different Trypanosoma cruzi strains were compared with their capacity to infect in vitro cultured LLC-MK2 cells. A sensitive and reproducible titration method for lectin binding sites (ELLA Enzyme Linked Lectin Assay) was employed, in which reactivities were scored through optical densities in an ELISA reader. Tissue culture trypomastigotes from the strains Y, CL, SC4, SC24, SC25, SC28, SC32 and SC33 were investigated for expression of different cell surface carbohydrate residues using Concanavalin A (ConA), Peanut agglutinin (PNA), Soybean agglutinin (SBA) and Wheat germ agglutinin (WGA) conjugated to peroxidase. The reactivity of the strains to PNA lectin was SC28>SC32>SC33>SC25>SC24>Y>CL>SC4. The optical density values obtained were highly correlated (r2 = 0.986, p < 10−4) with the number of parasitized LLC-MK2 cells 24 hours after infection by trypomastigotes from each corresponding strain. We concluded that galactose and N-acetyl-D-galactosamine residues that are present on the surface of trypomastigotes are important in host-cell recognition.
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Collection:
National databases
/
Brazil
Health context:
Neglected Diseases
Health problem:
Chagas Disease
/
Neglected Diseases
Database:
Sec. Est. Saúde SP
/
SESSP-IBACERVO
/
SESSP-IBPROD
Main subject:
Trypanosoma cruzi
/
Lectins
Limits:
Female
/
Humans
/
Male
Language:
English
Journal:
Acta Tropica
Year:
1996
Document type:
Article
Institution/Affiliation country:
Instituto Butantan/BR