期刊
SCIENCE ADVANCES
卷 4, 期 11, 页码 -出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/sciadv.aau6762
关键词
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资金
- State of Delaware CAT [15A01570]
- NIH [1 S10 OD016361]
- Delaware INBRE program
- National Institute of General Medical Sciences (NIGMS) from the NIH [P20 GM103446]
- state of Delaware
Hematopoietic stem and progenitor cells (HSPCs) are important target cells for gene therapy applications. Current genetic modifications of HSPCs rely on viral vectors in vivo or electroporation ex vivo. Here, we developed a non-viral system based on megakaryocytic microparticles (MPs) for targeted delivery of plasmid DNA (pDNA) and small RNAs to HSPCs. We have previously shown that megakaryocytic MPs, the most abundant MPs in blood circulation, target specifically and deliver cargo to HSPCs both in vitro and in vivo. With an optimized electroporation protocol, an average of 4200 plasmid copies per MP were loaded into MP, thus enabling effective delivery of green fluorescent protein (GFP)-encoding pDNA to HSPCs and HSPC nuclei, with up to 81% nuclei containing pDNA. Effective functional small interfering RNA (siRNA) and microRNA (miRNA) delivery were also demonstrated. As patient-specific or generic megakaryocytic MPs can be readily generated and stored frozen, our data suggest that this system has great potential for therapeutic applications targeting HSPCs.
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