Allele-specific transcript quantification detects haplotypic variation in the levels of the SDF-1 transcripts

Ryosuke Kimura, Tomoki Nishioka, Augustinus Soemantri, Takafumi Ishida

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29 Citations (Scopus)

Abstract

It has been suggested that SDF1-G801A, a single nucleotide polymorphism (SNP) in the 3′ untranslated region (UTR) of the SDF1 gene, is associated with susceptibility to diseases such as AIDS and type-I diabetes. However, experimental studies examining the effect of SDF1-G801A on SDF-1 expression have not supported its functional importance. In this study, to examine whether other polymorphisms have a cis-acting effect on SDF1 expression, we carried out haplotype analyses of the SDF1 gene and the allele-specific transcript quantification utilizing Epstein-Barr virus-transformed lymphoblastoid cell lines with heterozygous genotype for SDF1-G801A. Haplotype-based analyses on the proportion of the allele-specific transcripts revealed the presence of haplotypes associated with a decreased amount of the transcripts. In addition, we observed haplotypic variation in response to dibutyl cyclic AMP and tetradecanoyl phorbol acetate that enhances the levels of SDF-1 transcripts probably through activation of transcription factors. Showing evidence that polymorphisms other than the SDF1-G801A have a cis-acting effect on expression of SDF-1 transcripts, the results of this study contribute to the interpretation of previous disease-association studies and to the selection of SNP markers for future studies. As shown in this study, allele-specific transcript quantification coupled with haplotype analyses can be an effective tool for detecting cis-acting polymorphisms in expressional regulation.

Original languageEnglish
Pages (from-to)1579-1585
Number of pages7
JournalHuman molecular genetics
Volume14
Issue number12
DOIs
Publication statusPublished - 15-06-2005
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Molecular Biology
  • Genetics
  • Genetics(clinical)

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