Polycarbonate-based ultra-pH sensitive nanoparticles improve therapeutic window.

Polycarbonate-based ultra-pH sensitive nanoparticles improve therapeutic window.
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基于聚碳酸酯的超pH敏感纳米颗粒改善了治疗窗口。

DOI:
10.1038/s41467-020-19651-7
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发表时间:
2020-11-17
影响因子:
16.6
通讯作者:
Gao J
Gao J
中科院分区:
综合性期刊1区
文献类型:
--
作者:
Wang X;Wilhelm J;Li W;Li S;Wang Z;Huang G;Wang J;Tang H;Khorsandi S;Sun Z;Evers B;Gao J

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具有协同响应的刺激敏感纳米材料能够将微妙和渐进的生物变化转化为强大的输出,以提高诊断或治疗结果的精度。在这项研究中,我们报告了一系列可降解超pH敏感(dUPS)聚合物的设计、合成和表征,这些聚合物可将微小的酸性pH变化放大至有效的治疗输出。水解活性聚碳酸酯主链用于构建具有pH依赖性降解动力学的聚合物。一种dUPS聚合物PSC7A可以实现干扰素基因的刺激物的活化和在内体pH活化后的抗原递送,导致T细胞介导的抗肿瘤免疫。虽然不可降解的UPS聚合物诱导在注射部位持续数月的肉芽肿性炎症,但可降解的PSC 7A引发短暂的急性炎症反应,随后是聚合物降解和完全的组织愈合。dUPS聚合物的改善的治疗窗口打开了pH靶向药物和蛋白质治疗的机会。刺激响应纳米材料提供了利用纳米尺度协同性来提高诊断或治疗结果的精确度的机会。在这里,作者报告了一系列可降解的超pH敏感聚合物的设计、合成和表征,这些聚合物将微小的酸性pH变化放大为有效的治疗输出。
Stimuli-sensitive nanomaterials with cooperative response are capable of converting subtle and gradual biological variations into robust outputs to improve the precision of diagnostic or therapeutic outcomes. In this study, we report the design, synthesis and characterization of a series of degradable ultra-pH sensitive (dUPS) polymers that amplify small acidic pH changes to efficacious therapeutic outputs. A hydrolytically active polycarbonate backbone is used to construct the polymer with pH-dependent degradation kinetics. One dUPS polymer, PSC7A, can achieve activation of the stimulator of interferon genes and antigen delivery upon endosomal pH activation, leading to T cell-mediated antitumor immunity. While a non-degradable UPS polymer induces granulomatous inflammation that persists over months at the injection site, degradable PSC7A primes a transient acute inflammatory response followed by polymer degradation and complete tissue healing. The improved therapeutic window of the dUPS polymers opens up opportunities in pH-targeted drug and protein therapy. Stimuli-responsive nanomaterials offer the opportunity to exploit nanoscale cooperativity to improve the precision of diagnostic or therapeutic outcomes. Here, the authors report the design, synthesis and characterization of a series of degradable ultra-pH sensitive polymers that amplify small acidic pH changes to efficacious therapeutic outputs.
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