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首页> 外文期刊>Biomaterials Science >Genetic recombination of poly(l-lysine) functionalized apoferritin nanocages that resemble viral capsid nanometer-sized platforms for gene therapy
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Genetic recombination of poly(l-lysine) functionalized apoferritin nanocages that resemble viral capsid nanometer-sized platforms for gene therapy

机译:聚(L-赖氨酸)官能化矿蛋白纳米蛋白纳米病的遗传重组,其类似于基因治疗病毒衣壳纳米尺寸平台

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摘要

Currently, bioengineered apoferritin nanocages with flexible protein shells and functionalized modifications have become an attractive approach for efficient anti-tumor therapy. Here, we modified the N-terminus of H-chain subunits in apoferritin with different amounts of lysine via genetic recombination to obtain a poly(l-lysine) modified H-chain apoferritin (nL-HFn) nanocage for siRNA delivery and gene therapy. To achieve excellent cellular affinity and uptake, the nanocarriers were internalized through transferrin receptor-mediated endocytosis, then escaped from the endosome for cytoplasmic transport. Compared with natural apoferritin, the siRNA-loaded genetic recombination NPs modified with lysine exhibit stronger RNA-interference and antitumor efficiency both in vitro and in 4T1 tumor model mice. Therefore, bioengineered apoferritin nanocages modified with lysine might be a promising platform for nucleic acid drug delivery.
机译:目前,具有柔性蛋白质壳和官能化修饰的生物工程化植物纳米蛋白已成为有效的抗肿瘤治疗的有吸引力的方法。 在这里,通过遗传重组将H形酮蛋白的H-链亚基的N-末端改性用不同量的赖氨酸,得到用于siRNA递送和基因治疗的聚(L-赖氨酸)修饰的H型链甲醛(NL-HFN)纳米证。 为了实现优异的细胞亲和力和摄取,通过转铁蛋白受体介导的内吞作用内化纳米载体,然后从内体逸出以进行细胞质转运。 与天然Apoferrin相比,用赖氨酸改性的siRNA加载的遗传重组NPS在体外和4T1肿瘤模型小鼠中表现出较强的RNA干扰和抗肿瘤效率。 因此,用赖氨酸改性的生物工程化植物纳米蛋白纳米物可能是核酸药物递送的有希望的平台。

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