【摘要】 基因沉默包括转录水平上的基因沉默和转录后水平上的基因沉默。发生沉默的基因可以是外源性转移基因,也可以是入侵的病毒或宿主内源性基因。双链RNA(dsRNA)作为启动因素或中间体为不同生物基因沉默所共有。基因沉默是生物体在基因调控水平上的一种自我保护机制。通过基因沉默,可以限制外来核酸的入侵;同时,基因沉默还与生物的生长发育有关。更多还原

【Abstract】 Gene silencing includes the transcriptional and post-transcriptional gene silencing.Silencing gene is a kind of transferred gene or invaded virus or endogenesis gene.RNA is shared by different biological gene silencing as initiating element or medieval body.Gene silencing is a self-protection system on the regulating level which can prevent the outside nucleic acid from invading.Gene silencing is also concerned with the growth of the organism.更多还原