新的长读测序方法用于表征乙型肝炎的转录显示了化学HBV/人类RNA的高表达
Joakim Bedner Stenbäck1,2, Johan Ringlander1,2, Maria Andersson1,2
1Department of Infectious Diseases, Institute of Biomedicine, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden.
概括
乙型肝炎病毒 (HBV) 整合衍生RNA是患者病毒转录的主要来源,驱动疾病. 纳米孔测序与PCR相结合,简化了对HBV和D型肝炎病毒 (HDV) 转录的分析,有助于理解病变发生.
科学领域:
- 病毒学 病毒学
- 基因组学就是基因组学.
- 肝病学 肝病学是一种肝病学.
背景情况:
- 乙型肝炎病毒 (HBV) 融入人类DNA有助于HBsAg的产生和肝细胞癌 (HCC).
- 与短读NGS相比,长读纳米孔测序为分析整个转录提供了优势.
- 纳米孔测序用于HBV整合分析的当前应用是有限的.
研究的目的:
- 开发和应用一种将半嵌套PCR与纳米孔测序相结合的方法.
- 分析HBV转录,包括正规RNA,HBV-人类融合转录和拼接形式.
- 为了研究患有HBV或D型肝炎病毒 (HDV) 引起的肝病的患者.
主要方法:
- 研究了9名肝移植患者,患有与HBV或HDV相关的肝硬化或HCC.
- 使用半嵌套PCR来放大所有HBV转录,然后进行纳米孔测序.
- 通过量化读取3'冗余超出核酸1826的3'冗余来分化法典 (cccDNA衍生) 和融合转录.
主要成果:
- 独特和总的HBV-人类融合RNA读数与血清HBV DNA和HBsAg水平相关.
- 整合衍生的RNA占总HBVRNA的中位数97%.
- 即使没有ccDNA衍生转录,PreS1RNA水平也足以产生HDV粒子.
结论:
- 开发的方法简化并全面分析HBV转录.
- 结果显示融合衍生的RNA占主导地位,并支持ccDNA独立的HDV产生.
- 纳米孔测序为治疗向提供了对HBV和HDV生物学有价值的见解.
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