【摘要】 目的　探讨RHD基因转录后是否存在因替代拼接形成不同形式的mRNA。方法　采用逆转录PCR(RT PCR)技术检测 4名不同Rh表型 (CcDDEe、CCDDee、CcDDee和ccDdee)个体的RhDmRNA ,然后进行cDNA测序分析。结果　不同Rh表型的个体有相同的和复杂的RhDmRNA形式 ,均存在正常形式的RhDmRNA ,以及缺失第 7、第 9、第7和 9、第 7～ 9外显子共 5种形式的RHD转录子 ,这些缺失外显子的转录子的其余序列与正常RhDmRNA完全一致 ,显示 RHD 基因转录后存在替代剪切机制 ,且发生在第 7 8 9外显子或内含子区域。结论　 RHD 基因因为替代剪切第 7、8、9外显子形成复杂的、不同外显子组合的基因转录子 ,因此可能翻译成氨基酸C 端互不相同的多种形式的蛋白质。更多还原

【Abstract】 Objective To study whether RHD gene exists multiple mRNA produced by alternative splicing. Method RhD mRNA was analyzed through reverse transcriptase PCR (RT-PCR) and cDNA sequencing in 4 individuals with different Rh phenotypes (CcDDEe、CCDDee、CcDDee and ccDdee). Results The individuals with different Rh phenotypes had identical and intricate RhD mRNA isolations, which included normal mRNA, and 4 other transcripts with deletions of exon 7, exon 9, exon 7 and 9, and exon 7 to 9. Those transcripts had the same sequences as normal RhD mRNA except exon(s) deletion, which showed RHD gene existed alternative splicing, and it happened in exons or introns 7-9 regions. Conclusion There are intricate and different cassette-exons RhD transcripts produced through alternatively spliced exons 7 to 9. And those RhD mRNA isolations might code proteins with different C-terminus.更多还原