【摘要】 已知HBV cccDNA在感染肝细胞的细胞核内以微染色体的形式持续稳定存在,难以被靶向调控和清除。围绕HBV cccDNA持续沉默或降解清除机制及策略的研究是当前慢性乙型肝炎"功能性治愈"目标下的重点。介绍了目前对cccDNA基本生物学特性、转录和代谢调控机制及相关宿主因子的认知,重点分析了cccDNA沉默清除的可能途径和靶向调控策略。更多还原

【Abstract】 It is known that hepatitis B virus(HBV) covalently closed circular DNA(cccDNA) persists in the nucleus of infected hepatocytes in the form of minichromosome and is difficult to target and eliminate. Studies on the mechanisms and strategies for persistent silencing or elimination of HBV cccDNA are the focus achieving for "functional cure" of chronic hepatitis B. This article introduces the current knowledge on the basic biological features of cccDNA, regulatory mechanisms of transcription and metabolism, and related host factors, with a focus on the potential pathways and strategies for cccDNA silencing or elimination.更多还原