Abstract:
:Thioredoxin (TRX) is a ubiquitous dithiol-oxidoreduction enzyme broadly expressed in cells from prokaryote to eukaryote organisms. Human thioredoxin (human TRX) gene, previously cloned in our laboratory, codes for a 12-kDa protein found in the culture supernatant of several hemopoietic human cell lines. This protein is secreted by a nonclassical pathway. The role of the secreted enzyme as a signalling soluble mediator was demonstrated, but nothing is known about a membrane associated form of thioredoxin which could be involved in cell/cell contacts and accessory signal function. Thus, we performed experiments to determine if human TRX is also expressed at the cell surface. We report here positive results based upon indirect immunofluorescence flow cytometric analysis of different human cell lines (HeLa, U 937, Jurkat, 3B6, Daudi and Raji) using a cross reactive sheep anti E. coli TRX polyclonal antibody demonstrating a significant expression of human TRX at the surface of human cells.
journal_name
Biochem Biophys Res Communjournal_title
Biochemical and biophysical research communicationsauthors
Wollman EE,Kahan A,Fradelizi Ddoi
10.1006/bbrc.1996.6015subject
Has Abstractpub_date
1997-01-23 00:00:00pages
602-6issue
3eissn
0006-291Xissn
1090-2104pii
S0006-291X(96)96015-5journal_volume
230pub_type
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