灵长类TRIM34是一种广泛作用的,TRIM5依赖的lentiviral限制因子
Joy Twentyman1,2, Anthony Khalifeh3, Abby L Felton2
1Department of Global Health, University of Washington, Seattle, WA, USA.
Retrovirology
|August 23, 2023
概括
灵长类TRIM34蛋白质限制了lentiviruses,但需要TRIM5α. 这些限制因素共同提供了对类免疫缺陷病毒 (SIV) 和人类免疫缺陷病毒 (HIV) 的更广泛的抗病毒防御.
科学领域:
- 病毒学 病毒学
- 免疫学 免疫学 免疫学
- 遗传学 遗传学 是一个
背景情况:
- 像艾滋病毒这样的lentiviruses进化以逃避宿主免疫反应.
- 限制因素是先天的抗病毒蛋白质,限制病毒复制.
- TRIM5α是已知的限制因子,而TRIM34的作用是不太了解的.
研究的目的:
- 为了研究灵长类TRIM34对Simian Immunodeficiency Virus (SIV) capsids的抗病毒活性.
- 为了确定TRIM34,TRIM5α和lentiviral限制之间的关系.
- 阐明TRIM34介导的病毒限制背后的分子机制.
主要方法:
- 使用CRISPR-Cas9查,以确定限制因素.
- 测试各种灵长类TRIM34对象对各种SIV虫的测试.
- 同免疫沉试验用于研究蛋白质相互作用.
- 对TRIM5α和TRIM34域的功能分析.
主要成果:
- 灵长类TRIM34的正方形限制了特定的SIV囊体 (SIVAGM-SAB,SIVAGM-TAN,SIVMAC).
- 对于TRIM34介导的限制,TRIM5α是必不可少的,但不足.
- 人类TRIM5α与来自不同灵长类动物的TRIM34相互作用.
- 特定的域 (TRIM5α SPRY v1循环,TRIM34 SPRY域) 对于功能至关重要.
结论:
- TRIM34是一种广泛保存的灵长类动物的晶状病毒限制因子.
- TRIM34与TRIM5α协同工作,提供增强的抗病毒防御.
- TRIM34和TRIM5α的联合作用限制了病毒囊,这两个蛋白质都不能单独做到.
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