Department of Hematology, Transfusion, and Transplantation, First I. P. Pavlov State Medical University of St. Petersburg, Lev Tolstoy str., 6/8, 197022, Saint Petersburg, Russian Federation.
RASA Center in Tomsk, Tomsk Polytechnic University, pros. Lenina, 30, 634050, Tomsk, Russian Federation.
Adv Healthc Mater. 2016 Dec;5(24):3182-3190. doi: 10.1002/adhm.201600843. Epub 2016 Nov 18.
Mesenchymal stem cells (MSCs) are widely used in cell therapy due to their convenience, multiline differentiation potential, reproducible protocols, and biological properties. The potential of MSCs to impregnate magnetic microcapsules and their possible influence on cell function and ability to response to magnetic field have been explored. Interestingly, the cells suspended in media show much higher ability in internalization of microcapsules, then MSCs adhere into the surface. There is no significant effect of microcapsules on cell toxicity compared with other cell line-capsule internalization reported in literature. Due to internalization of magnetic capsules by the cells, such cell engineering platform is responsive to external magnetic field, which allows to manipulate MSC migration. Magnetically sorted MSCs are capable to differentiation as confirmed by their conversion to adipogenic and osteogenic cells using standard protocols. There is a minor effect of capsule internalization on cell adhesion, though MSCs are still able to form spheroid made by dozen of thousand MSCs. This work demonstrates the potential of use of microcapsule impregnated MSCs to carry internalized micron-sized vesicles and being navigated with external magnetic signaling.
间充质干细胞(MSCs)因其方便、多向分化潜能、可重复的方案和生物学特性而广泛用于细胞治疗。已经探索了 MSCs 浸渍磁性微胶囊的潜力及其对细胞功能和对磁场反应能力的可能影响。有趣的是,悬浮在培养基中的细胞显示出更高的内化微胶囊的能力,然后 MSCs 附着在表面上。与文献中报道的其他细胞系-胶囊内化相比,微胶囊对细胞毒性没有显著影响。由于细胞内化了磁性胶囊,因此这种细胞工程平台对外磁场有响应,这允许操纵 MSC 迁移。通过标准方案将磁分选的 MSC 转化为成脂细胞和成骨细胞,证实其具有分化能力。尽管 MSCs 仍然能够形成由数千个 MSCs 组成的球体,但胶囊内化对细胞黏附的影响很小。这项工作表明,使用浸渍有微胶囊的 MSC 来携带内化的微米级囊泡并通过外部磁信号进行导航具有潜在应用价值。
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