Publication Date:
1990-04-13
Description:
The alpha chain of the human histocompatibility antigen HLA-G was identified as an array of five 37- to 39-kilodalton isoforms by the use of two-dimensional gel electrophoresis. Both cell-associated and secreted HLA-G antigens are prominent in first trimester villous cytotrophoblasts and are greatly reduced in third trimester cytotrophoblasts. Allelic variation was not detected, an indication that HLA-G is not obviously polymorphic in cytotrophoblasts. Among the following choriocarcinoma cell lines studied, HLA-G is expressed in JEG but not in Jar or BeWo. Expression of endogenous HLA-G genes has not been found in normal lymphoid cells. Thus, HLA-G is subject to both cell type-specific and developmental regulation and is expressed in early gestation human cytotrophoblasts.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Kovats, S -- Main, E K -- Librach, C -- Stubblebine, M -- Fisher, S J -- DeMars, R -- AI-15586/AI/NIAID NIH HHS/ -- HD-24495/HD/NICHD NIH HHS/ -- P0I HD-24180/HD/NICHD NIH HHS/ -- etc. -- New York, N.Y. -- Science. 1990 Apr 13;248(4952):220-3.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Department of Human Oncology, University of Wisconsin, Madison 53706.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2326636" target="_blank"〉PubMed〈/a〉
Keywords:
Antibodies, Monoclonal
;
Cell Line
;
Choriocarcinoma/immunology
;
Female
;
Gene Expression
;
*Genes, MHC Class I
;
HLA Antigens/*genetics
;
HLA-G Antigens
;
Histocompatibility Antigens Class I/*genetics
;
Humans
;
Macromolecular Substances
;
Pregnancy
;
Pregnancy Trimester, First
;
Trophoblasts/*immunology
;
Tumor Cells, Cultured/immunology
;
Uterine Neoplasms/immunology
Print ISSN:
0036-8075
Electronic ISSN:
1095-9203
Topics:
Biology
,
Chemistry and Pharmacology
,
Computer Science
,
Medicine
,
Natural Sciences in General
,
Physics
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