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Nonviral polymeric nanoparticles for gene therapy in pediatric CNS malignancies.
Nanomedicine: Nanotechnology, Biology and Medicine ( IF 4.2 ) Pub Date : 2019-10-23 , DOI: 10.1016/j.nano.2019.102115
John Choi 1 , Yuan Rui 2 , Jayoung Kim 2 , Noah Gorelick 1 , David R Wilson 2 , Kristen Kozielski 2 , Antonella Mangraviti 1 , Eric Sankey 1 , Henry Brem 3 , Betty Tyler 1 , Jordan J Green 4 , Eric M Jackson 1
Affiliation  

Together, medulloblastoma (MB) and atypical teratoid/rhabdoid tumors (AT/RT) represent two of the most prevalent pediatric brain malignancies. Current treatment involves radiation, which has high risks of developmental sequelae for patients under the age of three. New safer and more effective treatment modalities are needed. Cancer gene therapy is a promising alternative, but there are challenges with using viruses in pediatric patients. We developed a library of poly(beta-amino ester) (PBAE) nanoparticles and evaluated their efficacy for plasmid delivery of a suicide gene therapy to pediatric brain cancer models-specifically herpes simplex virus type I thymidine kinase (HSVtk), which results in controlled apoptosis of transfected cells. In vivo, PBAE-HSVtk treated groups had a greater median overall survival in mice implanted with AT/RT (P = 0.0083 vs. control) and MB (P < 0.0001 vs. control). Our data provide proof of principle for using biodegradable PBAE nanoparticles as a safe and effective nanomedicine for treating pediatric CNS malignancies.

中文翻译:

用于儿童 C​​NS 恶性肿瘤基因治疗的非病毒聚合物纳米颗粒。

髓母细胞瘤 (MB) 和非典型畸胎样/横纹肌样肿瘤 (AT/RT) 共同代表了两种最常见的儿科脑恶性肿瘤。目前的治疗涉及放射治疗,这对于三岁以下的患者来说具有很高的发育后遗症风险。需要新的更安全、更有效的治疗方式。癌症基因治疗是一种很有前途的替代方案,但在儿科患者中使用病毒存在挑战。我们开发了一个聚(β-氨基酯)(PBAE)纳米粒子库,并评估了它们对儿童脑癌模型(特别是单纯疱疹病毒 I 型胸苷激酶(HSVtk)的自杀基因治疗的质粒递送效果),这导致受控转染细胞的凋亡。在体内,PBAE-HSVtk 治疗组在植入 AT/RT 的小鼠中具有更高的中位总生存期(P = 0. 0083 与对照)和 MB(P < 0.0001 与对照)。我们的数据为使用可生物降解的 PBAE 纳米粒子作为治疗儿科 CNS 恶性肿瘤的安全有效的纳米药物提供了原理证明。
更新日期:2019-10-23
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