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Expression of the GBGT1 Gene and the Forssman Antigen in Red Blood Cells in a Palestinian Population

Artikel i vetenskaplig tidskrift
Författare W. A. Abusibaa
M. A. Srour
Ali-Reza Moslemi
Lola Svensson
C. Jesus
F. Mendes
C. Hesse
Publicerad i Transfusion Medicine and Hemotherapy
ISSN 1660-3796
Publiceringsår 2019
Publicerad vid Institutionen för biomedicin, avdelningen för klinisk kemi och transfusionsmedicin
Institutionen för biomedicin, avdelningen för patologi
Språk en
Länkar dx.doi.org/10.1159/000497288
Ämneskategorier Transfusionsmedicin

Sammanfattning

Background: The Forssman antigen (FORS1 Ag) is expressed on human red blood cells (RBCs). We investigated its presence on RBCs from Palestinian subjects and Swedish subjects by serological testing and by sequencing part of exon 7 of the GBGT1 gene, which encodes Forssman synthase. -Materials and Methods: Blood samples from Palestinian subjects (n = 211 adults and n = 73 newborns) and from Swedish subjects (n = 47 adults) were analyzed in the study. RBCs from the Palestinian samples were typed for the FORS1 Ag using a monoclonal anti-Forssman antibody. The GBGT1 gene was genotyped by DNA sequencing (all adult samples) or by using amplification refractory mutation system PCR (newborn samples). Results: All of the studied samples were negative for the FORS1 Ag by serologic typing. DNA sequencing of the 3′ end of exon 7 of the GBGT1 gene, which includes Arg296, showed that all samples had the wild-type Arg296 sequence, which is associated with an inactive form of Forssman synthase. We detected four single nucleotide polymorphisms in the adult samples; two were silent (p.Tyr232=, p.Gly290=), and two were missense (p.Arg243Cys, p.Arg243His). The allele frequencies ranged from 0.2 to 3.6%. The p.Arg243Cys SNP was a novel SNP that was detected in one Palestinian sample. Conclusion: Our results confirmed the allelic diversity of GBGT1 and identified a novel nucleotide polymorphism in this gene, p.Arg243Cys. Our results also confirmed that the FORS blood group system is a low-frequency system. © 2019 S. Karger AG, Basel. Copyright: All rights reserved.

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