Application of a recombinant Echinococcus multilocularis antigen in an enzyme-linked immunosorbent assay for immunodiagnosis of human alveolar echinococcosis

Müller, Norbert; Gottstein, Bruno; Vogel, Monique; Flury, Karin; Seebeck, Thomas (1989). Application of a recombinant Echinococcus multilocularis antigen in an enzyme-linked immunosorbent assay for immunodiagnosis of human alveolar echinococcosis. Molecular and biochemical parasitology, 36(2), pp. 151-159. Elsevier 10.1016/0166-6851(89)90187-4

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A highly antigenic polypeptide fragment of the recombinant Echinococcus multilocularis antigen II/3 was produced in Escherichia coli and purified for application in enzyme-linked immunosorbent assay (ELISA). The antigen II/3-encoding 1.0 kb DNA sequence was reduced by sonication into smaller DNA fragments which were subsequently cloned into lambda gt11. Three clones could be isolated from the sublibrary, all synthesizing a recombinant antigen as a stable beta-galactosidase fusion protein. In a further step, the 0.6-kb insert from one positive clone was subcloned into the plasmid pAR 3038, which directed efficient synthesis of the antigen fused to only 11 amino acids from the N-terminus of the phage T7 major capsid protein. The plasmid-encoded antigen (antigen II/3-10) was purified from a bacterial cell extract and then tested in an ELISA. Using sera from 88 patients with an E. multilocularis-infection, a high diagnostic sensitivity of 90% was demonstrated. Investigation of sera from 220 patients with various helminthic infections showed a specificity of 99%, suggesting the suitability of the antigen II/3-10 as an immunodiagnostic tool.

Item Type:	Journal Article (Original Article)
Division/Institute:	04 Faculty of Medicine > Department of Dermatology, Urology, Rheumatology, Nephrology, Osteoporosis (DURN) > Clinic of Rheumatology and Immunology 05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Parasitology 05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) 08 Faculty of Science > Department of Biology > Institute of Cell Biology
UniBE Contributor:	Müller, Norbert, Gottstein, Bruno, Vogel, Monique, Seebeck, Thomas
Subjects:	500 Science > 570 Life sciences; biology 600 Technology > 610 Medicine & health 600 Technology > 630 Agriculture
ISSN:	0166-6851
Publisher:	Elsevier
Language:	English
Submitter:	Bruno Gottstein
Date Deposited:	18 Jul 2018 12:42
Last Modified:	05 Dec 2022 15:16
Publisher DOI:	10.1016/0166-6851(89)90187-4
PubMed ID:	2671725
URI:	https://boris.unibe.ch/id/eprint/118642