Volume 58, Issue 1 pp. 108-115
Experimental Cancer
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Glycolipids of germ cell tumors: Extended globo-series glycolipids are a hallmark of human embryonal carcinoma cells

Jonathan Wenk

Jonathan Wenk

Department of Pathology and Cell Biology, Thomas Jefferson University, 1020 Locust Street, Philadelphia, PA 19107, USA

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Peter W. Andrews

Peter W. Andrews

Department of Biomedical Science, The University of Sheffield, Western Bank, Sheffield, S10 2TN, UK

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Jochen Casper

Jochen Casper

Department of Hematology and Oncology, Medizinische Hochschule Hannover, Postfach 61 01 80, D-3000 Hannover 61, Germany

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Jun-Ichi Hata

Jun-Ichi Hata

Department of Pathology, Keio University School of Medicine, 35 Shinanomachi, Shtnjuku-ku Tokyo 160, Japan

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Martin F. Pera

Martin F. Pera

CRC Growth Factors, Department of Zoology, University of Oxford, South Parks Road, Oxford OX13PS, UK

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Alexander von Keitz

Alexander von Keitz

Department of Urology, University of Marburg, Baldinger St., 35043 Marburg, Germany

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Ivan Damjanov

Ivan Damjanov

Department of Pathology and Cell Biology, Thomas Jefferson University, 1020 Locust Street, Philadelphia, PA 19107, USA

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Bruce A. Fenderson

Corresponding Author

Bruce A. Fenderson

Department of Pathology and Cell Biology, Thomas Jefferson University, 1020 Locust Street, Philadelphia, PA 19107, USA

Department of Pathology and Cell Biology, Thomas Jefferson University, 1020 Locust Street, Rm. 233 Jefferson Hall, Philadelphia, PA 19107 USA. Fax: (215) 955-8703Search for more papers by this author
First published: 1 July 1994
Citations: 39

Abstract

Glycolipids of human germ cell tumor lines were analyzed co define the most common immunohistochemical profiles of embryonal carcinoma (EC), differentiated derivatives of EC, yolk sac carcinoma (YC) and choriocarcinoma (CC). Glycolipid composition was examined by high-performance thin-layer chromatography (HPTLC) combined with Immunostaining with a panel of anti-carbohydrate monoclonal antibodies (MAbs). All EC cell lines were found to contain high levels of globo-series glycolipids, including globotriosylceramide (Gb3), globoside (Gb4), Gb5 (Ga1β1 ± 1Gb4) and GL7 (sialyl Ga1β1 ± 3Gb4). Somatic differentiated derivatives (e.g., EC cells treated with retinoic acid) contained decreased levels of globo-series glycolipids and increased levels of lacto- and ganglio-series glycolipids, including GD3, GT3 and GD2. CC cell lines contained relatively large amounts of Gb3 but did not contain extended globo-series glycolipids GbS and GL7. CC cell lines also contained a macroglycolipid reactive with the antibody to SSEA-1 (Lex). Glycolipids were not detected in two YC cell lines, while other YC cell lines contained globo-series core glycolipids (Gb3 and Gb4) and gangliosides. We conclude that EC, YC and CC have distinct patterns of membrane glycolipid expression that can be identified by HPTLC and immunostaining. Our results indicate that globo-series glycolipids GbS and GL7, which carry stage-specific embryonic antigens 3 and 4 (SSEA-3 and SSEA-4), are a hallmark of human EC cells. Cell lines derived from human germ cell tumors that do not express Gb5 and GL7 deserve to be re-evaluated, since they may represent different stem cells, most likely equivalent to somatic cells and their developmentally committed precursors (e.g., neuroblasts). © 1994 Wiley-Liss, Inc.

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