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替代剪切形成多种形式的RhD mRNA 被引量:6

Multiple RhD isolations produced by alternative splicing
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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。 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.
出处 《中国输血杂志》 CAS CSCD 2004年第5期310-314,共5页 Chinese Journal of Blood Transfusion
基金 广东省医学科研项目 (A2 0 0 3 712 ) 深圳市医药卫生科研计划项目 ( 2 0 0 3 0 42 83 )资助课题
关键词 RHD基因 替代剪切 MRNA CDNA RHD geng Alternative splicing Splice mRNA cDNA
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参考文献21

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共引文献49

同被引文献53

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