Human Vault Nanoparticle Targeted Delivery of Antiretroviral Drugs to Inhibit Human Immunodeficiency Virus Type 1 Infection
作者:Jennifer A. Fulcher、Kyle Tamshen、Alexander L. Wollenberg、Valerie A. Kickhoefer、Jan Mrazek、Julie Elliott、F. Javier Ibarrondo、Peter A. Anton、Leonard H. Rome、Heather D. Maynard、Timothy Deming、Otto O. Yang
DOI:10.1021/acs.bioconjchem.9b00451
日期:2019.8.21
“Vaults” are ubiquitously expressed endogenous ribonucleoprotein nanoparticles with potential utility for targeted drug delivery. Here, we show that recombinant human vault nanoparticles are readily engulfed by certain key human peripheral blood mononuclear cells (PBMC), predominately dendritic cells, monocytes/macrophages, and activated T cells. As these cell types are the primary targets for human immunodeficiency virus type 1 (HIV-1) infection, we examined the utility of recombinant human vaults for targeted delivery of antiretroviral drugs. We chemically modified three different antiretroviral drugs, zidovudine, tenofovir, and elvitegravir, for direct conjugation to vaults. Tested in infection assays, drug-conjugated vaults inhibited HIV-1 infection of PBMC with equivalent activity to free drugs, indicating vault delivery and drug release in the cytoplasm of HIV-1-susceptible cells. The ability to deliver functional drugs via vault nanoparticle conjugates suggests their potential utility for targeted drug delivery against HIV-1.
“保险库”是一种普遍表达的内源性核糖核蛋白纳米粒子,具有用于靶向药物递送的潜力。在这里,我们展示了重组人保险库纳米粒子可以被某些关键的人外周血单个核细胞(PBMC)轻松吞噬,主要是树突状细胞、单核细胞/巨噬细胞和激活的T细胞。由于这些细胞类型是人体免疫缺陷病毒1型(HIV-1)感染的主要目标,我们研究了重组人保险库用于靶向递送抗逆转录病毒药物的实用性。我们对三种不同的抗逆转录病毒药物——齐多夫定、替诺福韦和埃尔维特格拉韦进行了化学修饰,以便直接与保险库结合。在感染试验中,药物结合的保险库抑制了HIV-1对PBMC的感染,其活性与自由药物相当,表明保险库递送和药物在HIV-1易感细胞的细胞质中释放。通过保险库纳米粒子结合物递送功能性药物的能力表明,它们在靶向递送药物对抗HIV-1方面具有潜在的实用性。