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- Document 0041
- DOCN M9610041
- TI Bacterial expression of the caprine arthritis-encephalitis virus gag and
- env proteins and their use in enzyme-linked immunosorbent assay.
- DT 9601
- AU Clavijo A; Thorsen J; Department of Veterinary Microbiology and
- Immunology, University; of Guelph, Ontario, Canada.
- SO Am J Vet Res. 1995 Jul;56(7):841-8. Unique Identifier : AIDSLINE
- MED/96039854
- AB The core protein and the transmembrane protein, encoded for the
- structural genes gag and env, respectively, of caprine
- arthritis-encephalitis virus were amplified by use of polymerase chain
- reaction, cloned into a pGEX-2T vector, and expressed in Escherichia
- coli as fusion proteins with the glutathione S-transferase at their
- C-terminus. The recombinant proteins were purified and evaluated by use
- of an ELISA. Sera from 269 goats were tested, and the results were
- compared with those obtained by use of immunoblot analysis. When results
- from both recombinant ELISA (r-ELISA) were compared, it appeared that
- the transmembrane glycoprotein was more immunoreactive than the core
- protein, because it was recognized by a higher percentage of sera from
- infected goats. When results of the 2 ELISA (p28 r-ELISA and p40
- r-ELISA) were combined in parallel, they were comparable to those of the
- immunoblot test, with sensitivity of 100% and specificity of 98.3%. It
- was also found that use of both r-ELISA makes it possible to compare the
- variable immunoreactivity against gag and env viral antigens, which may
- be correlated with the disease state. The r-ELISA, using core and
- transmembrane proteins, appears to be highly sensitive and specific for
- detection of antibodies against caprine arthritis-encephalitis virus.
- DE Animal Arthritis-Encephalitis Virus, Caprine/GENETICS/*ISOLATION &
- PURIF Base Sequence Cloning, Molecular Comparative Study DNA Primers
- Electrophoresis, Polyacrylamide Gel Enzyme-Linked Immunosorbent
- Assay/METHODS Escherichia coli False Positive Reactions Gene
- Products, env/ANALYSIS/*BIOSYNTHESIS/ISOLATION & PURIF Gene Products,
- gag/ANALYSIS/*BIOSYNTHESIS/ISOLATION & PURIF *Goat Diseases Goats
- Lentivirus Infections/DIAGNOSIS/*VETERINARY Molecular Sequence Data
- Polymerase Chain Reaction Recombinant Fusion
- Proteins/ANALYSIS/BIOSYNTHESIS/ISOLATION & PURIF Reproducibility of
- Results Sensitivity and Specificity Support, Non-U.S. Gov't JOURNAL
- ARTICLE
-
- SOURCE: National Library of Medicine. NOTICE: This material may be
- protected by Copyright Law (Title 17, U.S.Code).
-
-