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    • 4. 发明授权
    • Protein and nucleic acid delivery vehicles, components and mechanisms thereof
    • 蛋白质和核酸递送载体,其组分和机理
    • US08802418B2
    • 2014-08-12
    • US13082466
    • 2011-04-08
    • Venigalla B. Rao
    • Venigalla B. Rao
    • C12Q1/70C12N7/00
    • C12N15/86A61K31/7088A61K31/711A61K47/48776A61K47/6901A61K48/00C07K14/005C12N7/00C12N15/87C12N15/88C12N2795/10042C12N2795/10122C12N2795/10142C12N2795/10152
    • Complex viruses are assembled from simple protein subunits by sequential and irreversible assembly. During genome packaging in bacteriophages, a powerful molecular motor assembles at the special portal vertex of an empty prohead to initiate packaging. An aspect of the invention relates to the phage T4 packaging machine being highly promiscuous, translocating DNA into finished phage heads as well as into proheads. Single motors can force exogenous DNA into phage heads at the same rate as into proheads and phage heads undergo repeated initiations, packaging multiple DNA molecules into the same head. This shows that the phage DNA packaging machine has unusual conformational plasticity, powering DNA into an apparently passive capsid receptacle, including the highly stable virus shell, until it is full. These features allow for the design of a novel class of nanocapsid delivery vehicles.
    • 复杂病毒通过顺序和不可逆组装由简单蛋白质亚基组装。 在噬菌体的基因组包装过程中,一个强大的分子马达组装在一个空头颅的特殊门户顶点,开始包装。 本发明的一个方面涉及高度混杂的噬菌体T4包装机,将DNA转运到成品噬菌体头以及pro头中。 单个电机可以将外源DNA以与头孢子相同的速率强制进入噬菌体头,并且噬菌体头经历反复引发,将多个DNA分子包装在相同的头中。 这表明噬菌体DNA包装机具有不寻常的构象可塑性,将DNA提供到明显被动的衣壳容器中,包括高度稳定的病毒壳,直至其充满。 这些特征允许设计一种新型的纳米框输送车辆。