Abstract:
:High circulating levels of anti-endothelial antibodies have been reported in patients with accelerated transplant coronary artery disease (TxCAD); however, the nature or characteristics of the antigen to which these antibodies bind in vivo remain unclear. To identify the antigen, a human endothelial cell cDNA expression library was constructed in lambdaZAP and immuno-screened with serum containing a high titre of anti-endothelial antibodies. Nucleotide sequence of cloned cDNA inserts and GenBank database searches revealed a 94% identity in a 35 bp overlap to the human vimentin gene. The cloned antigen fusion protein co-migrated with human vimentin of molecular mass 56-58 KD in SDS-PAGE and exhibited immunoreactivity towards monoclonal and polyclonal anti-human vimentin antibodies. These results suggest that the 56-58 KD antigen associated with accelerated TxCAD is vimentin (or a vimentin-like protein), a cytoskeletal protein present in cells of the blood vessel walls.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Ationu A,Collins Adoi
10.1006/bbrc.1997.7004subject
Has Abstractpub_date
1997-07-30 00:00:00pages
716-8issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(97)97004-2journal_volume
236pub_type
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journal_title:Biochemical and biophysical research communications
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