Abstract:
:The rheumatic diseases are characterized by the production of autoantibodies that are usually directed against components of the cell nucleus. In this communication, we describe autoantibodies that recognize DNA topoisomerase II (anti-topoII) present in the serum of a patient with systemic lupus erythematosus. Several lines of evidence indicate that this antibody recognizes topoisomerase II. First, it binds to the native enzyme in soluble extracts prepared from isolated chromosomes and effectively depletes such extracts of active enzyme. Second, the serum binds to topoisomerase II in immunoblots of mitotic chromosomes and chromosome scaffolds. Finally, the antiserum binds strongly to a fusion protein encoded by a cloned cDNA and expressed in Escherichia coli that (based on immunological evidence) represents the carboxy-terminal portion of chicken topoisomerase II. Autoantibodies such as the one described here may provide useful reagents for the study of human topoisomerase II.
journal_name
Exp Cell Resjournal_title
Experimental cell researchauthors
Hoffmann A,Heck MM,Bordwell BJ,Rothfield NF,Earnshaw WCdoi
10.1016/0014-4827(89)90067-0subject
Has Abstractpub_date
1989-02-01 00:00:00pages
409-18issue
2eissn
0014-4827issn
1090-2422journal_volume
180pub_type
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