title: A monoclonal antibody from infected mice to a Schistosoma mansoni egg proteinase.
abstract: A number of monoclonal antibodies were obtained by fusion of SP2/0 myeloma cells and spleen lymphocytes from mice infected with Schistosoma mansoni. These antibodies were tested for their ability to inhibit acidic, thiol-dependent proteinases previously isolated from Schistosoma mansoni eggs and adult worms. One of the monoclonal antibodies isolated inhibits egg proteinase activity measured in vitro with the use of a low m.w. synthetic substrate. This antibody, which is an IgG1 isotype, does not appreciably inhibit an acidic, thiol-dependent proteinase obtained from the adult stage of Schistosoma mansoni. Immunocytochemical methods with the monoclonal antibody have been used to localize the egg proteinase within a set of "penetration" glands in the unhatched miracidium.
mesh_terms: D000367:Age Factors; D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology*; D000918:Antibody Specificity; D002403:Cathepsins / Q000276:immunology; D005260:Female; D051379:Mice; D010063:Ovum / Q000201:enzymology; D010447:Peptide Hydrolases / Q000276:immunology* / Q000378:metabolism; D012550:Schistosoma mansoni / Q000276:immunology*; D012552:Schistosomiasis / Q000276:immunology*
chemical_list: D000911:Antibodies, Monoclonal; D002403:Cathepsins; D010447:Peptide Hydrolases