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1996-02-26
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Document 1042
DOCN M9621042
TI Detection of a 67-kD glycoprotein in human tumor cell lines by a
monoclonal antibody established against a recombinant human endogenous
retrovirus-K envelope-gene-encoded protein.
DT 9602
AU Vogetseder W; Feng J; Haibach C; Mayerl W; Dierich MP; Institut fur
Hygiene, Leopold-Franzens-Universitat Innsbruck,; Osterreich.
SO Exp Clin Immunogenet. 1995;12(2):96-102. Unique Identifier : AIDSLINE
MED/96100697
AB Endogenous retroviruses in humans are discussed as putative etiologic
agents in tumorigenesis. Molecular mimicry of cellular epitopes by
retroviruses may be of importance for the genesis of autoimmune
diseases. A group of human endogenous retroviruses, HERV-K, which is
related to the mouse mammary tumour virus, has been characterised
previously and open reading frames have been found covering their gag,
pol, prt and env genes. Transcription of HERV-K genomes at the mRNA
level as well as antibodies in human sera directed against HERV-K env
have been detected recently. We have generated a monoclonal antibody
(mAb), anti-HERV1, against a recombinant HERV-K Env protein. This mAb is
capable of immunoprecipitating a 67-kD glycoprotein from the human
breast carcinoma cell line T47D, the amount of which is strongly
enhanced after stimulation with estradiol followed by progesterone. The
same band could be precipitated from other carcinoma cell lines (Hep2,
MCF7 and HeLa), but not from the human B-lymphoblastoid cell line Raji
and from cultured human fibroblasts. Incubation of this antigen in the
presence of endoglycosidase F indicates the presence of N-linked
carbohydrate moieties of at least 7-9 kD.
DE Animal Antibodies, Monoclonal/BIOSYNTHESIS/*CHEMISTRY Carbohydrate
Conformation Gene Products, env/CHEMISTRY/*IMMUNOLOGY Genes,
env/IMMUNOLOGY Human Mice Mice, Inbred BALB C Molecular Weight
Precipitin Tests Recombinant Proteins/IMMUNOLOGY
Retroviridae/GENETICS/*IMMUNOLOGY Support, Non-U.S. Gov't Tumor Cells,
Cultured/*IMMUNOLOGY JOURNAL ARTICLE
SOURCE: National Library of Medicine. NOTICE: This material may be
protected by Copyright Law (Title 17, U.S.Code).