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M9630449.TXT
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1996-02-27
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Document 0449
DOCN M9630449
TI Expression of the T antigen on a T-lymphoid cell line, supT1.
DT 9603
AU Nakada H; Inoue M; Tanaka N; Wakamiya N; Yamashina I; Department of
Biotechnology, Faculty of Engineering, Kyoto,; Japan.
SO Glycoconj J. 1995 Jun;12(3):356-9. Unique Identifier : AIDSLINE
MED/96121958
AB We have measured glycosyltransferase activities of SupT1 cells, a
T-lymphoid cell line shown to react with autoantibodies in the sera of
many HIV patients. Since considerable
alpha-N-acetylgalactosaminyl-transferase and beta 1, 3
galactosyltransferase activities were found in SupT1 cells, at least the
O-glycan core 1 structure can probably be synthesized. FACS analysis
using an anti-T monoclonal antibody showed expression of the T antigen
(Gal beta 1-3 GalNAc). Glycoproteins with the T antigen were isolated by
immunoprecipitation with the anti-T antibody from a SupT1 cell lysate
labelled metabolically with 3H-glucosamine and then analysed by
SDS-PAGE. It was revealed that the precipitate contained a glycoprotein
with a molecular weight corresponding to that of leukosialin. O-glycans
were prepared from the immunoprecipitate by alkaline-borohydride
treatment and then fractionated on Bio-Gel P-2, GalNAcOH and
Gal-GalNAcOH being identified inter alia. These results suggest that an
anti-T antibody may be included in the autoantibodies found in HIV-1
infected individuals.
DE Antigens, CD/*BLOOD Antigens, Viral, Tumor/*BLOOD Autoantibodies/BLOOD
Carbohydrate Sequence Cell Line Human HIV-1/*IMMUNOLOGY Molecular
Sequence Data Polysaccharides/BLOOD Sialoglycoproteins/*IMMUNOLOGY
Support, Non-U.S. Gov't T-Lymphocytes/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).