Abstract
Echinococcus multilocularis oncospheres, primary vesicular cysts, and protoscolices were assessed in vitro and in vivo for their potential to synthesize a PAS-positive laminated layer containing monoclonal antibody (mAb) G11-binding Em2 antigen. The presence of Em2 antigen in developed oncospheres and cysts was subsequently correlated to the potential of in vivo development into a secondary metacestode in recipient host mice, which also responded by anti-Em2 serum antibody formation. In contrast, protoscolices failed to develop the “Em2-positive” layer in vitro under the selected experimental conditions. The failure to develop subsequently in vivo into a secondary metacestode was underlined by a lack of anti-Em2 serum antibody formation by the hosts. We furthermore developed a technique to obtainE. multilocularis clones by inoculating single oncospheres into recipient mice.
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This work was supported by grant 31-29651.90 from the Swiss National Science Foundation
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Gottstein, B., Deplazes, P. & Aubert, M. Echinococcus multilocularis: immunological study on the “Em2-positive” laminated layer during in vitro and in vivo post-oncospheral and larval development. Parasitol Res 78, 291–297 (1992). https://doi.org/10.1007/BF00937086
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DOI: https://doi.org/10.1007/BF00937086