致癌病毒劫持SOX18的先驱功能以增强病毒的持久性
Krista Tuohinto1, Matthew S Graus2, Peyton Staab1
1Translational Cancer Medicine Research Program, University of Helsinki, Finland.
Research square
|September 2, 2025
概括
卡波西
科学领域:
- 病毒学
- 分子生物学
- 癌症学
背景情况:
- 卡波西肉瘤疹病毒 (KSHV) 导致终身感染,主要发生在淋巴内皮细胞 (LEC) 中.
- 在持续的KSHV感染中,维护病毒性基因组至关重要,涉及宿主DNA复制和结合.
- 病毒基因组以特定细胞类型的方式维持的特定调节机制尚未完全理解.
研究的目的:
- 研究KSHV如何在宿主细胞内确保其病组基因组的持久性.
- 确定细胞类型特异性因素在KSHV病例维持中的作用.
- 阐明KSHV与宿主细胞机械相互作用的分子机制.
主要方法:
- 研究KSHV的LANA蛋白与宿主细胞因子之间的相互作用.
- 使用了SOX18和BRG1的遗传和药理学破坏.
- 评估病毒传染量和KSHV感染的标志.
主要成果:
- KSHV 劫持了内皮特异性转录因子 SOX18 以使病毒插曲持续存在.
- LANA通过SOX18招募SWI/SNF染色体重塑复合体,特别是BRG1.
- 破坏SOX18或BRG1可显著降低病毒传染量和感染特征.
结论:
- KSHV利用SOX18在LEC中的开拓性功能来维护其环节性基因组.
- LANA-SOX18-BRG1轴对于有效的病毒基因组持久性和染色质可访问性至关重要.
- 病毒可以利用特定的谱系转录调节器来建立持久的核环节保留.
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