Extracellular vesicles produced in B cells deliver tumor suppressor miR-335 to breast cancer cells disrupting oncogenic programming in vitro and in vivo.

作者: Gonzalo Almanza , Jeffrey J. Rodvold , Brian Tsui , Kristen Jepsen , Hannah Carter

DOI: 10.1038/S41598-018-35968-2

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摘要: The successful implementation of miRNA (miR) therapies in humans will ultimately rely on the use vehicles with improved cellular delivery capability. Here we tested a new system that leverages extracellular vesicles (EVs) laden tumor suppressor (miR-335) produced B cells by plasmid DNA induction (iEVs). We demonstrate iEVs-335 efficiently and durably restored endogenous miR-335 pool human triple negative breast cancer cells, downregulated expression target gene SOX4 transcription factor, markedly inhibited growth vivo. Remarkably, mediated transcriptional effects persisted tumors after 60 days post orthotopic implantation. Genome-wide RNASeq analysis treated vitro showed regulation discrete number genes only, without broad transcriptome perturbations. This technology may be ideally suited for aimed to restore miRNAs disrupting oncogenic program established escape from control.

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