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Horizontal and vertical transmission of mouse class I MHC sequence in Schistosoma mansoni

Published online by Cambridge University Press:  31 July 2001

A. IMASE ,
K. KOBAYASHI ,
H. OHMAE ,
H. MATSUDA  and
Y. IWAMURA
A. IMASE
Affiliation:
Center for Arts and Humanities, Faculty of Medical Health, Ibaraki Prefectural University of Health Sciences, 4669-2, Ami, Inashiki, Ibaraki 300-0394, Japan
K. KOBAYASHI
Affiliation:
Institute of Basic Medical Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
H. OHMAE
Affiliation:
Institute of Basic Medical Sciences, University of Tsukuba, Tsukuba, Ibaraki 305-0006, Japan
H. MATSUDA
Affiliation:
Department of Tropical Medicine and Parasitology, Dokkyo University School of Medicine, Mibu, Tochigi 321-0293, Japan
Y. IWAMURA
Affiliation:
Center for Arts and Humanities, Faculty of Medical Health, Ibaraki Prefectural University of Health Sciences, 4669-2, Ami, Inashiki, Ibaraki 300-0394, Japan
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Abstract

The mouse major histocompatibility complex (MHC) class I sequence was detected in 8-week-old Schistosoma mansoni by in situ polymerase chain reaction (in situ PCR). The signals to the mouse class I MHC sequence were observed in the nuclei of the mesenchymal and reproductive cells of S. mansoni. Signals were also observed in the cytoplasm of the tegumental tubercles. This finding suggested the possibility of MHC gene transfer from the host to schistosomes. Furthermore, the class I MHC sequence was detected in the DNA extracted from the cercariae of S. mansoni by nested PCR. Neither the nucleotide sequence of class I MHC detected in adult worm DNA nor that of class I MHC detected in the host (mouse) DNA was identical with that of class I MHC detected in the cercarial DNA. From the data we assumed that S. mansoni may have retained their own mouse class I MHC sequence in their genome throughout their life-cycle.

Keywords

Schistosoma mansonimouse major histocompatibility complex (MHC)class Iin situ PCR
Type
Research Article
Information
Parasitology , Volume 123 , Issue 2 , August 2001 , pp. 163 - 168
Copyright
2001 Cambridge University Press

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