在哺乳动物细胞中使用基因组集成的遗传密码扩展机器的双停止密码抑制
Birthe Meineke1, Johannes Heimgärtner1, Rozina Caridha1
1Science for Life Laboratory, Karolinska Institutet, Department of Medical Biochemistry and Biophysics, Division of Genome Biology, 17165 Stockholm, Sweden; Ming Wai Lau Centre for Reparative Medicine, Stockholm Node, Karolinska Institutet, 17165 Stockholm, Sweden.
Cell reports methods
|November 7, 2023
概括
基因编码的非正规氨基酸 (ncAAs) 可以通过 piggyBac 集成有效地纳入哺乳动物细胞. 这种方法使得活细胞中细胞表面受体的特定位点蛋白质标记和双光体修饰成为可能.
科学领域:
- 生物化学 生化学
- 分子生物学分子生物学
- 细胞生物学 细胞生物学
背景情况:
- 非正规氨基酸 (ncAAs) 的特定场所内置使蛋白质的标记和修改成为可能.
- 专门的tRNA/aminoacyl-tRNA合成酶 (aaRS) 对用于停止编码子抑制,以纳入ncAAs.
- 哺乳动物细胞系应用需要高效和均的ncAA纳入.
研究的目的:
- 通过使用piggyBac介导的基因组整合,证明在哺乳动物细胞中有效和均的ncAA整合.
- 探索ncAAs在稳定细胞系中的光标签应用中的使用.
- 通过使用相互直角的点击化学方法,实现细胞表面受体的特定位置的双光体标签.
主要方法:
- 使用了piggyBac转位子系统,用于tRNA/aaRS对的基因组集成.
- 采用了模块化等离子体设计,用于增强表达的多复制tRNA数组.
- 研究了色和石停止符号的抑制.
- 整合了两个不同的ncAAs与直角点击化学.
主要成果:
- 在多种哺乳动物细胞系中实现了均和高效的遗传编码ncAA整合.
- 证明了蛋白质的光标签成功使用纳入的ncAAs.
- 在活哺乳动物细胞上展示了细胞表面受体的特定位置的双光体标签.
结论:
- PiggyBac介导的基因组集成提供了一个有效的平台,用于在哺乳动物细胞中纳入ncAA.
- ncAAs作为蛋白质标签和修改的有价值的化学处理器,包括双重标签应用.
- 这项技术有助于对活哺乳动物系统中的蛋白质功能和定位进行先进的研究.
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