W Earnshaw, B Bordwell, C Marino, N Rothfield
J Clin Invest.
1986;
77(2):426–430
doi:10.1172/JCI112320
This article Copyright © 1986, The American Society for Clinical Investigation
Abstract
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e have identified 39 individuals with anti-centromere antibodies (ACA) in our patient population, all of whom have Raynaud's syndrome or disease. We have used sera from the ACA-positive patients and from 123 controls (22 normal individuals and 101 additional patients with either Raynaud's disease or Raynaud's syndrome plus an associated connective tissue disease) to screen the proteins of highly purified human (HeLa) mitotic chromosomes by sodium dodecyl sulfate polyacrylamide gel electrophoresis and immunoblotting. Three antigens were recognized by the sera from the ACA-positive patients. These were centromere protein (CENP)-B (80,000 mol wt--recognized by all ACA-positive sera), CENP-A (17,000 mol wt--recognized by 38 of 39 ACA-positive sera), and CENP-C (140,000 mol wt--recognized by 37 of 39 ACA-positive sera). None of these antigens were recognized by any of the 123 control sera, although binding was occasionally seen to other chromosomal antigens. Therefore the ACA response is highly uniform in our patient population. Antibody to CENP-B shows a 100% correlation with anti-centromere staining by indirect immunofluorescence.
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