希斯脱甲基酶LSD1/ZNF217/CoREST复合体是爱斯坦-巴尔病毒炎症再激活的主要限制因素
Yifei Liao1,2,3,4, Jinjie Yan1,2,3,4, Isabella Kong5
1Division of Infectious Disease, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, USA.
Research square
|January 29, 2025
概括
爱斯坦-巴尔病毒 (EBV) 在癌症中的性基因沉默通过向激素脱甲基酶LSD1.1.被逆转. 这种表观遗传疗法重新激活EBV,使癌细胞对抗病毒药物敏感.
科学领域:
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 病毒学 病毒学
- 癌症生物学 癌症生物学
背景情况:
- 爱斯坦-巴尔病毒 (EBV) 与大约1.5%的人类癌症有关,包括淋巴瘤和癌瘤.
- 在大多数与EBV相关的癌症中,病毒性性基因被表观遗传性沉默,阻碍了抗病毒治疗的有效性.
- 了解EBV潜伏机制对于开发新的治疗策略至关重要.
研究的目的:
- 为了确定调节爱斯坦-巴尔病毒 (EBV) 延迟的宿主因素.
- 探索控制EBV性基因表达的表观遗传机制.
- 评估针对EBV相关癌症的宿主因子的治疗潜力.
主要方法:
- 在伯基特B细胞中进行全基因组CRISPR-Cas9查,以确定EBV潜伏的宿主因素.
- 使用小分子抑制剂向氨酸特异性基因组脱甲基酶LSD1.1.
- 调查质子甲基化标记 (H3K4,H3K9) 在病毒促进剂和增强剂中的作用.
- 采用正交的CRISPR屏幕来识别关键的素甲基转移酶.
主要成果:
- 氨酸特异性基因组脱甲基酶LSD1及其共抑制剂ZNF217/CoREST被确定为EBV延迟的关键调节剂.
- 敲除LSD1,ZNF217或CoREST,或使用LSD1抑制剂治疗,重新激活EBV.
- 在多种癌症模型中,LSD1阻塞重新激活了EBV,并使细胞对甘西克洛维尔敏感.
- LSD1的耗尽改变了EBV BZLF1促进器和oriLyt的H3K4甲基化,促进了病毒的活性化.
结论:
- 希斯3氨酸4 (H3K4) 甲基化是EBV光学开关的关键调节器.
- 针对LSD1提供了一种新的治疗策略,通过重新激活病毒来治疗EBV相关的癌症.
- 结合表观遗传疗法与抗病毒药物显示出治疗EBV驱动的恶性瘤的前景.
关键词:
在DNA循环中,DNA循环.这是表观遗传学.玛-疹病毒的病毒.基因组脱甲基酶 (Histone Demethylase) 是一种基因组脱甲基酶.基因组甲基转移酶的基因组甲基转移酶.延迟时间 延迟时间淋巴瘤淋巴瘤是什么临床诱导疗法 临床诱导疗法的重新激活方式更多相关视频
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