Highly Efficient Method for Intracellular Delivery of Proteins Mediated by Cholera Toxin-Induced Protein Internalization.

Highly Efficient Method for Intracellular Delivery of Proteins Mediated by Cholera Toxin-Induced Protein Internalization.
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霍乱毒素诱导的蛋白质内化介导的蛋白质细胞内递送的高效方法。

DOI:
10.1021/acs.molpharmaceut.1c00479
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发表时间:
2021-10
影响因子:
4.9
通讯作者:
Yuan Fu
Yuan Fu
中科院分区:
医学2区
文献类型:
--
作者:
Xiaofan Jia;Yan Zhang;Ting Wang;Yuan Fu

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将功能蛋白质递送到细胞中可以帮助我们了解特定蛋白质如何影响细胞行为以及治疗由蛋白质缺陷或功能丧失突变引起的疾病。然而,蛋白质不能通过扩散进入细胞。在这项工作中,开发了一种新的细胞生物学工具,用于将重组蛋白递送到哺乳动物细胞中。我们劫持了霍乱毒素使用的细胞内转运途径,并利用了最近开发的分裂内含肽,它与变性条件相容,并显示出特殊的剪接活性,将感兴趣的蛋白质递送到哺乳动物细胞中。在这里,我们使用绿色荧光蛋白和荧光素作为概念验证。结果表明,霍乱毒素B亚基单独可以通过共价结合或非共价相互作用将其他重组蛋白递送到细胞中。我们的方法比达特细胞穿透肽提供了超过10倍的递送效率,并且对富含神经节苷脂的细胞具有选择性。这项研究为受体介导的细胞内靶向工具包增加了一个有用的工具,并为选择性地将治疗性蛋白质递送到富含神经节苷脂的细胞中开辟了可能性。
Delivery of functional proteins into cells may help us understand how specific protein influences cell behavior as well as treat diseases caused by protein deficiency or loss-of-function mutations. However, protein cannot enter cells by diffusion. In this work, a novel cell biology tool for delivering recombinant proteins into mammalian cells was developed. We hijacked the intracellular transport routes used by the cholera toxin and took advantage of recent development on split intein that is compatible with denatured conditions and shows an exceptional splicing activity to deliver a protein of interest into mammalian cells. Here, we used green fluorescent protein and apoptin as proofs-of-concept. The results demonstrate that the cholera toxin B subunit alone could deliver other recombinant proteins into cells through either covalent conjugation or noncovalent interaction. Our method offers more than 10-fold better delivery efficiency than the tat cell-penetrating peptide and is selective for ganglioside-rich cells. This study adds a useful tool to the receptor-mediated intracellular targeting toolkit and opens possibility for the selective delivery of therapeutic proteins into ganglioside-rich cells.
使用霍乱毒素-B修饰的原蛋白的一种新型方法,将靶向运动神经元的靶向递送。
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