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用DNA纳米装置对特定蛋白质进行域向膜分区

Yong-Hao Ma¹, Yan Zhu¹, Hui Wu²

¹Molecular Science and Biomedicine Laboratory (MBL), State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, College of Biology, Aptamer Engineering Center of Hunan Province, Hunan University, Changsha, Hunan 410082, China.

Journal of the American Chemical Society

|March 11, 2024

概括

研究人员开发了DNA纳米设备来控制细胞膜蛋白位,影响细胞迁移和T细胞激活. 这为研究细胞信号提供了新的途径,

科学领域:

细胞生物学
生物技术
纳米技术

背景情况:

细胞膜具有复杂的脂质和蛋白质域,对细胞功能至关重要.
在没有基因工程的情况下操纵膜蛋白定位对于理解细胞过程至关重要但具有挑战性.

研究的目的:

开发新的DNA纳米器件,用于针对性地操纵膜蛋白域.
在活细胞中改变脂质排序 (Lo) 和脂质失调 (Ld) 域的功能后果.

主要方法:

将胆固醇或托科菲尔与DNA四面体结合,以创建针对Lo和Ld域的纳米设备.
通过脚介导的链位移将蛋白质识别配体 (体,抗体) 纳入蛋白质转位.
使用PTK7和CD45作为模型蛋白来证明纳米设备在调节细胞迁移和T细胞激活中的有效性.

主要成果:

证明PTK7在Lo域中的积累促进了瘤细胞的迁移,而Ld域中的封存则抑制了它.
通过操纵CD45转位来调节T细胞激活的DNA纳米设备的模块化性.
在活细胞上的不同膜域内建立了蛋白质定位的动态控制方法.

结论:

开发出能够精确操纵膜蛋白位的多功能DNA纳米设备.
提供了PTK7和CD45局部化在细胞迁移和T细胞激活中的作用.
开辟了研究膜结构,分子相互作用和细胞信号通路的新途径.

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