DNA-specific antiidiotypic antibodies in the sera of patients with autoimmune diseases.
FEBS Lett
; 314(3): 259-63, 1992 Dec 21.
Article
en En
| MEDLINE
| ID: mdl-1468555
ABSTRACT
Blood sera of patients with autoimmune diseases scleroderma (Scl), systemic lupus erythematosus (SLE), and rheumatoid arthritis (RA) have been shown to yield a specific immune response to topoisomerase I, the product of expression of a cDNA fragment cloned into lambda gt11 and monoclonal antibodies (MAB) to the enzyme. The 'topoisomerase test' is not absolutely specific for Scl. The stable positive response of autoimmune sera to anti-topoisomerase monoclonal antibodies has a specific character and is associated with the interaction of the Fab fragment of MAB with the IgG fraction of autoimmune serum. The response observed indicates the induction of anti-idiotypic antibodies against topoisomerase. The anti-idiotype, isolated by HPLC and affinity chromatography demonstrated the following functional activities (i) the immunological reaction against DNA; (ii) high-affinity DNA-binding with topoisomerase-specific consensus; (iii) ability to compete with the native enzyme for binding with DNA and MAB to topoisomerase; (iv) immunological reaction against MAB to topoisomerase.
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Colección:
01-internacional
Base de datos:
MEDLINE
Asunto principal:
Autoanticuerpos
/
Enfermedades Autoinmunes
/
ADN
/
Anticuerpos Antiidiotipos
Límite:
Humans
Idioma:
En
Revista:
FEBS Lett
Año:
1992
Tipo del documento:
Article