最小的细菌细胞JCVI-syn3B作为一个底盘来研究细菌和哺乳动物细胞之间的相互作用
Daniela Matias de C Bittencourt1,2, David M Brown3, Nacyra Assad-Garcia3
1The J. Craig Venter Institute, 4120 Capricorn Lane, La Jolla, California 92037, United States.
ACS synthetic biology
|March 20, 2024
概括
研究人员开发了一种合成的Mycoplasma mycoides (Mmc) 系统,以识别介导宿主细胞相互作用的基因. 一种缩小基因组菌株 (JCVI-syn3B) 成功识别了8个基因,这些基因对人类细胞的Mmc附着和细胞形成至关重要.
科学领域:
- 微生物学 微生物学
- 合成生物学 合成生物学
- 基因组学就是基因组学.
背景情况:
- 菌质是具有小基因组的有义务寄生虫,需要宿主殖民才能生存.
- 一些Mycoplasma物种表现出宿主细胞依赖的生长,并通过表面殖民或内化相互作用.
- 了解这些相互作用对于破译Mycoplasma病原体和宿主微生物动态至关重要.
研究的目的:
- 设计一种合成的Mycoplasma系统,用于识别参与宿主细胞相互作用的基因.
- 使用具有设计者基因组的可遗传处理的合成Mycoplasma mycoides (Mmc) 菌株.
- 通过哺乳动物细胞选介导附着,内化和细胞形成的基因.
主要方法:
- 构建了两种合成的Mmc菌株:JCVI-syn1.0 (完整基因组减去毒性因子) 和JCVI-syn3B (轴突生长的最小基因组).
- 评估生长,与人类细胞系的物理关联 (HEK-293T,HeLa) 和由髓状细胞诱导的细胞形成 (dHL-60).
- 评估JCVI-syn3B与特定基因组的功能补充.
主要成果:
- 在 JCVI-syn1.0 中,发现了八个不可或缺的基因 (MMSYN1-0179到MMSYN1-0186),这些基因对生存,附着和细胞形成至关重要.
- 缺少这些基因的JCVI-syn3B,没有表现出这些表型.
- 八个基因重新引入JCVI-syn3B恢复了细胞附着和细胞化,但没有生存.
结论:
- 合成的Mmc菌株JCVI-syn3B作为一个有价值的平台,用于剖析宿主细胞相互作用中的基因功能.
- 可以分析特定的基因组,以了解它们在调解哺乳动物细胞附着和细胞分裂中的作用.
- 这种方法可以使用最小的细菌底盘来研究宿主微生物相互作用.
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