Immunogenicity and Modulatory Effect of the Lectins from Al-tocal-pus hetel-ophyllus (Jackfruit) Seeds, Artocarpin and Jacalin
نویسندگان
چکیده
The immune response of mice subcutaneously immunized with two lectins from Artocarpus heterophyllus seeds, artocarpin and jacalin, and their possible modulatory effect on antibody synthesis of mice immunized with an unrelated antigen, were studied. Both lectins induced specific synthesis of antibodies, irrespective of their immunizing dose. Concerning the modulatory effect on the synthesis of antiovalbumin total immunoglobulins, artocarpin stimulated the synthesis of anti-ovalbumin antibodies irrespective of its dose and jacalin had a tendency to stimulate such antibody synthesis according to its dose. Discrimination of anti-ovalbumin synthesis of IgGl and IgE showed that the artocarpin modulated IgGl whilst jacalin modulated IgE. RESUMEN. "Iiiniuiiogeiiicidad y efecto inodulador de dos lectinas de semillas de Artocarpus heterophyllus, artocnrpiiia y jacalina". Se estudió la respuesta iiiiiiuiie de ratones iiiinuiiizados subcutáneamiente con dos lectitias de seiiiillas de Artocarpus Iieteroplzyllus, artocarpina y jacalina, y sus posibles efectos moduladores eii la síntesis de aiiticuerpos de ratones iiimunizados con uii aiitígeiio iio relacionado estructuralmente. Las dos lectinas induceii la síntesis específica de anticuerpos, independientemente de sus dosis inmunizantes. Con respecto al efecto inodulador sobre la síiitesis de inmunoglobulinas totales antiovoalbúmina, la artocarpina estimuló la síntesis de anticuerpos antiovoalbúiiiina independienteineiite de su dosis y la jacalina tuvo tendencia a estimular la síntesis del aiiticuerpo según su dosis. La discriiniiiacióii de las síiitesis de IgGl y IgE aiiti-ovoalbumina deiiiostró que la artocarpiiia modula la IgG1, eii tanto que la jacalina inodula la IgE.
منابع مشابه
Structural basis for the carbohydrate specificities of artocarpin: variation in the length of a loop as a strategy for generating ligand specificity.
Artocarpin, a tetrameric lectin of molecular mass 65 kDa, is one of the two lectins extracted from the seeds of jackfruit. The structures of the complexes of artocarpin with mannotriose and mannopentose reported here, together with the structures of artocarpin and its complex with Me-alpha-mannose reported earlier, show that the lectin possesses a deep-seated binding site formed by three loops....
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