Panseri Silvia, Montesi Monica, Iafisco Michele, Adamiano Alessio, Ghetti Martina, Cenacchi Giovanna, Tampieri Anna
J Biomed Nanotechnol. 2016 May;12(5):909-21. doi: 10.1166/jbn.2016.2248.
Superparamagnetic nanoparticles offer several opportunities in nanomedicine and magnetic cell targeting. They are considered to be an extremely promising approach for the translation of cell-based therapies from the laboratory to clinical studies. In fact, after injection, the magnetic labeled cells could be driven by a static magnetic field and localized to the target site where they can perform their specific role. In this study, innovative iron-doped hydroxyapatite nanoparticles (FeHA NPs) were tested with mesenchymal stem cells (MSCs) as tools for cell therapy. Results showed that FeHA NPs could represent higher cell viability in'respect to commercial superparamagnetic iron oxide nanoparticles (SPION) at four different concentrations ranging from 10 μg/ml up to 200 μg/ml and would also upregulate an early marker involved in commitment and differentiation of MSCs. Moreover, FeHA NPs were uptaken without negatively affecting the cell behavior and their ultrastructure. Thus obtained magnetic cells were easily guided by application of a static magnetic field. This work demonstrates the promising opportunities of FeHA NPs in MSCs labeling due to the unique features of fast degradation and very low iron content of FeHA NPs compared to SPIONs. Likewise, due to the intrinsic properties of FeHA NPs, this approach could be simply transferred to different cell types as an effective magnetic carrier of drugs, growth factors, miRNA, etc., offering favorable prospects in nanomedicine.
超顺磁性纳米颗粒在纳米医学和磁性细胞靶向方面提供了多种机遇。它们被认为是将基于细胞的疗法从实验室转化为临床研究的一种极具前景的方法。事实上,注射后,磁性标记的细胞可由静磁场驱动并定位到靶位点,在那里它们可以发挥其特定作用。在本研究中,创新的铁掺杂羟基磷灰石纳米颗粒(FeHA NPs)与间充质干细胞(MSCs)一起作为细胞治疗工具进行了测试。结果表明,在10μg/ml至200μg/ml的四种不同浓度下,与商业超顺磁性氧化铁纳米颗粒(SPION)相比,FeHA NPs能表现出更高的细胞活力,并且还会上调参与MSCs定向分化的一个早期标志物。此外,FeHA NPs被摄取后不会对细胞行为及其超微结构产生负面影响。如此获得的磁性细胞在施加静磁场时很容易被引导。这项工作证明了FeHA NPs在MSCs标记方面具有广阔的机遇,因为与SPIONs相比,FeHA NPs具有快速降解和极低铁含量的独特特性。同样,由于FeHA NPs的固有特性,这种方法可以简单地应用于不同的细胞类型,作为药物、生长因子、miRNA等的有效磁性载体,在纳米医学中具有良好的前景。
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