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The SDF1-G801A polymorphism is not associated with SDF1 gene expression in Epstein–Barr virus-transformed lymphoblastoid cells

Genes & Immunity volume 4, pages 356–361 (2003)Cite this article

Abstract

The effects of the SDF1-3′A on AIDS progression have been attributed to the altered amount of stromal cell-derived factor 1 (SDF-1). However, the contribution of the SDF1-G801A polymorphism to SDF-1 expression is still unclear. In contrast to fresh peripheral blood mononuclear cells (PBMCs), Epstein–Barr virus (EBV)-transformed lymphoblastoid cell lines (LCLs) express the SDF-1 mRNA. Using EBV-transformed LCLs from 42 individuals with different genotypes, we investigated the SDF-1 mRNA levels and methylation status in the SDF1 gene. Both in PBMCs and in EBV-transformed LCLs, CpG dinucleotides in the 5′ region of the SDF1 gene were unmethylated. As for the 3′ untranslated region (3′UTR), by contrast, CpG dinucleotides were methylated in PBMCs, whereas site-specific demethylation around the polymorphic site was detected in EBV-transformed LCLs. The levels of the demethylation were correlated with the SDF-1 mRNA levels. However, the genotype for the SDF1-G801A polymorphism did not significantly alter the SDF-1 mRNA levels. The allele preferences in transcription and methylation were also absent in the heterozygous cells. In conclusion, this study suggested a contribution of site-specific demethylation in the 3′UTR to the SDF1 gene expression, but did not show any evidence for the contribution of the SDF1-G801A polymorphism to the amount of the SDF-1 mRNA.

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  1. Department of Biological Sciences, Unit of Human Biology and Genetics, School of Science, University of Tokyo, Hongo, Bunkyo-ku, Tokyo, Japan

    R Kimura, T Nishioka & T Ishida

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  1. R Kimura
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  2. T Nishioka
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Correspondence to T Ishida.

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Sponsorship: Grant-in-Aid for Scientific Research on Priority Area from MEXT, Japan.

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Kimura, R., Nishioka, T. & Ishida, T. The SDF1-G801A polymorphism is not associated with SDF1 gene expression in Epstein–Barr virus-transformed lymphoblastoid cells. Genes Immun 4, 356–361 (2003). https://doi.org/10.1038/sj.gene.6363978

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