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Histo-blood Group P: Biosynthesis of Globoseries Glycolipids in EBV-transformed B Cell Lines

Overview
Journal Glycoconj J
Publisher Springer
Date 1996 Aug 1
PMID 8872109
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Abstract

The genetic and biosynthetic basis of the histo-blood group P-system is not fully understood. Individuals with the rare p phenotype do not express the three glycolipid antigens (Pk, P and P1) of this system, probably because of deficiencies in glycosyltransferases involved in their biosynthesis. Iiuka et al. [Iiuka S, Chen SH, Yoshida A (1986) Biochem Biophys Res Commun 137: 1187-95], however, previously reported that detergent extracts from an EBV-transformed B cell line derived from a p individual did express the glycosyltransferase activity (Pk transferase) assumed to be missing in this blood group status. Here, we have reinvestigated the antigen expression and glycosyltransferase activities in two p individuals by analysing EBV-transformed cell lines as well as erythrocytes to confirm the blood group P status. The thin layer chromatography glycolipid profile of extracts from erythrocytes and EBV-transformed B cell lines showed characteristic accumulation of lactosylceramide and absence of Pk and P antigens. Glycosyltransferase activities of the B cell lines were analysed using glycolipid substrates and both extracts were found to contain lactosylceramide synthetase and P transferase activities but to be completely devoid of Pk transferase activity. The presented data indicate that p individuals, in contrast to previous reports, do not express a functional Pk glycosyltransferase.

References
1.
Fellous M, Cartron J, Wiels J, Tursz T . A monoclonal antibody against a Burkitt lymphoma associated antigen has an anti-Pk red blood cell specificity. Br J Haematol. 1985; 60(3):559-65. DOI: 10.1111/j.1365-2141.1985.tb07454.x. View

2.
Kojima H, Tsuchiya S, Sekiguchi K, Gelinas R, Hakomori S . Predefined gene transfer for expression of a glycosphingolipid antigen by transfection with a cosmid genomic library prepared from a cell line in which the specific glycosphingolipid is highly expressed. Biochem Biophys Res Commun. 1987; 143(2):716-22. DOI: 10.1016/0006-291x(87)91413-6. View

3.
Kijimoto-Ochiai S, Naiki M, Makita A . Defects of glycosyltransferase activities in human fibroblasts of Pk and p blood group phenotypes. Proc Natl Acad Sci U S A. 1977; 74(12):5407-10. PMC: 431739. DOI: 10.1073/pnas.74.12.5407. View

4.
Symington F, Bernstein I, Hakomori S . Monoclonal antibody specific for lactosylceramide. J Biol Chem. 1984; 259(9):6008-12. View

5.
Wiels J, Holmes E, COCHRAN N, Tursz T, Hakomori S . Enzymatic and organizational difference in expression of a Burkitt lymphoma-associated antigen (globotriaosylceramide) in Burkitt lymphoma and lymphoblastoid cell lines. J Biol Chem. 1984; 259(23):14783-7. View