论文部分内容阅读
在反向遗传化学的研究中,虽然通过筛选的方法已鉴定在Duchenne肌营养不良和囊性纤维变性等基因,但在染色体定位的基础上,从克隆的哺乳类基因组DNA中鉴定并重获已转录的序列仍是基因分离的重大难题。作者应用了一种新方法——外显子捕捉法(exon trapping)-来进行研究,通过在RNA的剪接过程中,用具顺式作用的序列来进行筛选。作者所用的外显子捕捉载体是pETV-SD,缺失剪接供体(SD)和剪接受体(SA)位点,在其
In reverse genetics studies, although genes such as Duchenne’s muscular dystrophy and cystic fibrosis have been identified by screening methods, based on chromosomal location, cloned mammalian genomic DNA has been identified and recovered Transcribed sequence is still a major problem in gene isolation. The authors applied a new method, exon trapping, to perform the screening by using cis-acting sequences during RNA splicing. The exon-trapping vectors used by the authors are pETV-SD, deletion splice donor (SD) and splice acceptor (SA) sites,