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生物通
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新型病毒载体有望实现乙肝长期治愈,单剂量给药即可持久抑制病毒 ...
目前,治疗慢性乙肝感染的药物,如干扰素 - α 衍生物、核苷和核苷酸类似物等,虽能有效抑制病毒复制,但很难实现持久治愈。这主要是因为乙肝病毒复制过程中产生的共价闭合环状 DNA(cccDNA)非常稳定,它不仅是病毒蛋白表达的模板,还参与前基因组 RNA(pgRNA)的合成,而现有的药物难以清除 cccDNA。此外,cccDNA 转录调控机制复杂,其编码的乙肝 X ...
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