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Exosomes for drug delivery - a novel application for the mesenchymal stem cell

机译:用于药物递送的外泌体-间充质干细胞的新应用

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Exosomes are the most extensively characterized class of secreted membrane vesicles that carry proteins and RNAs for intercellular communication. They are increasingly seen as possible alternatives to liposomes as drug delivery vehicles. Like liposomes, they could deliver their cargo across the plasma membrane and provide a barrier against premature transformation and elimination. In addition, these naturally-occurring secreted membrane vesicles are less toxic and better tolerated in the body as evidenced by their ubiquitous presence in biological fluids, and have an intrinsic homing ability. They are also amenable to in vivo and in vitro loading of therapeutic agents, and membrane modifications to enhance tissue-specific homing. Here we propose human mesenchymal stem cells as the ideal cell source of exosomes for drug delivery. Mesenchymal stem cell transplantation for various disease indications has been extensively tested and shown to be safe in numerous clinical trials. These cells are also prolific producers of immunologically inert exosomes. Immortalization of these cells does not compromise the quantity or quality of exosome production, thus enabling infinite and reproducible exosome production from a single cell clone
机译:外来体是分泌蛋白囊泡中最广泛表征的一类,其携带蛋白质和RNA用于细胞间通讯。它们越来越被视为脂质体作为药物递送载体的替代物。像脂质体一样,它们可以将其货物运送穿过质膜,并提供防止过早转化和清除的屏障。此外,这些天然分泌的膜囊泡在体内的毒性较低,在体内的耐受性更好,这是它们在生物液中普遍存在的证据,并且具有固有的归巢能力。它们还适合在体内和体外装载治疗剂,并进行膜修饰以增强组织特异性归巢。在这里,我们提出人间充质干细胞作为用于药物递送的外泌体的理想细胞来源。用于各种疾病适应症的间充质干细胞移植已被广泛测试,并在许多临床试验中显示出安全性。这些细胞也是免疫惰性外来体的多产者。这些细胞的永生化不会影响外泌体生产的数量或质量,因此可以从单个细胞克隆中无限量且可重复生产外泌体

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