儿童的HIV-1前病毒缺陷差异与儿童的HIV-1前病毒缺陷 接受抗逆转录病毒治疗的成年人
bioRxiv : the preprint server for biology
|June 12, 2025
概括
在长期接受抗逆转录病毒疗法 (ART) 的儿童中,对人类免疫缺陷病毒1型 (HIV-1) 前病毒DNA的调查揭示了显著的基因缺失,特别是在env基因中. 这表明与成年人相比,儿科HIV-1感染的选择压力不同.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
背景情况:
- 了解人类免疫缺陷病毒1型 (HIV-1) 病毒前景观对于开发有效的缓解策略至关重要.
- 儿童HIV-1感染带来了独特的挑战,因为与成人感染相比,持续的发展和不同的暴露时间表带来了独特的挑战.
研究的目的:
- 描述长期使用抗逆转录病毒疗法 (ART) 治疗垂直获得感染的儿童近全长的HIV-1前病毒DNA结构.
- 将这些预病毒景观与现有的数据集进行比较,这些数据集来自于ART前的儿童,短期的ART,以及成年人的ART.
- 确定测量完整的艾滋病毒储存库和实现儿童艾滋病毒缓解的潜在遗传标.
主要方法:
- 几乎全长的HIV-1单基因组测序在5名接受ART治疗的儿童的血液样本上进行了大约7-9年的测序.
- 分析了Proviral结构,并与不同儿科和成人HIV-1队列的已发表数据进行了比较.
主要成果:
- 在长期接受ART的儿童中,观察到对大型内部前病毒删除的强有力的选择,特别是在env基因内.
- 与成年人相比,在儿童中发现序列完整的前病毒的频率较低 (2.5%).
- 与成年人相比,在ART治疗的儿童中,主要接供体部位 (MSD) 和包装信号的缺陷较少,而在儿童中,纹身基因缺陷更为常见.
结论:
- 与成年人相比,不同选择压力塑造了儿童的HIV-1前病毒格局,显着偏好大删除.
- 这些发现表明,不同的遗传区域可能与测量完整的艾滋病毒存储库以及开发儿科艾滋病毒缓解策略有关.
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