Aberrant RNA splicing in RHD 7-9 exons of DEL individuals in Taiwan: A mechanism study

Hsiang Chun Liu, Hock Liew Eng, Yu Fen Yang, Ya Hui Wang, Kuan Tsou Lin, Hua-Lin Wu, Tsun Mei Lin

研究成果: Article同行評審

12 引文 斯高帕斯(Scopus)

摘要

Background: The Rh blood D group provides a clinically important model of aberrant splicing with skipped exons. Approximately 30% of serologically D-negative Chinese individuals have an intact RHD gene (DEL phenotype) and induce allo-immunization in transfusions. The RHD1227GNA polymorphism occurs in >95% DEL phenotype of Asian descent. The effects of RHD 1227A and a novel allele on exon 9 splicing were examined. Results: Amplified DEL RNA products revealed that 3 transcripts inved skipping of exons 8-9, exon 9, or exon 9 with an inserted 170-bp cryptic exon located between exons 7 and 8. A novel, single nucleotide polymorphism was identified in the 7th intron, (IVS7) 923C>T, and present in all DEL patients. The odds ratio of RHD1227G>A allele with DEL phenotype was 2711. Splicing analysis of transcripts from minigenes containing the 1227GNA allele, but not the (IVS7) 923C>T allele, demonstrated aberrant exon 9 skipping. Conclusions: A combined haplotype of 1227G>A and IVS7 923C>T alleles was apparent in >95% DEL Chinese individuals. RHD1227A mutation significantly increased aberrant mRNA splicing, producing a hybrid RHD mRNA lacking exon 9. These results provide a molecular basis of the DEL phenotype in the Chinese population.

原文English
頁(從 - 到)565-573
頁數9
期刊Biochimica et Biophysica Acta - General Subjects
1800
發行號6
DOIs
出版狀態Published - 2010 六月 1

All Science Journal Classification (ASJC) codes

  • Biophysics
  • Biochemistry
  • Molecular Biology

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