Variation in the cellular localization of host-protective oncospheral antigens in Taenia saginata and Taenia solium.

Abstract:

:Immunohistochemistry and immunofluorescence with confocal microscopy were used to localize the host-protective antigens of Taenia saginata (TSA9 and TSA18) and Taenia solium (TSOL16, TSOL18 and TSOL45). In nonactivated oncospheres, TSA9 and TSOL45 antigens were found primarily in the cytoplasm of the penetration gland type one (PG1) cell. A similar pattern of staining was seen for TSOL45 in oncospheres of T. solium that remained within the oncospheral membrane. In addition, there was less intense staining of TSA9 and TSOL45 in the quadri-nucleate penetration gland type 2 (PG2) cell. TSA18, TSOL16 and TSOL18 were predominantly found in the PG2 cell. In activated oncospheres that had escaped the oncospheral membrane, the antigens (other than TSA9) were seen both in the penetration gland cell locations and throughout the oncospheral parenchyma. Co-localization analyses revealed that only TSOL16 and TSOL18 antigens were co-localized in the PG2 cell of oncospheres that had not escaped the oncospheral membrane. However, in activated oncospheres that escaped the oncospheral membrane, all three antigens of T. solium were co-localized as they were present throughout the parenchyma. No positive staining was observed on the surface of nonactivated or recently activated oncospheres of T. saginata or T. solium.

journal_name

Parasite Immunol

journal_title

Parasite immunology

authors

Jabbar A,Verástegui M,Lackenby JA,Walduck AK,Gauci CG,Gilman RH,Lightowlers MW

doi

10.1111/j.1365-3024.2010.01230.x

subject

Has Abstract

pub_date

2010-09-01 00:00:00

pages

684-95

issue

9-10

eissn

0141-9838

issn

1365-3024

pii

PIM1230

journal_volume

32

pub_type

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