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Facile preparation of hyaluronic acid-modified Fe3O4@Mn3O4 nanocomposites for targeted T-1/T-2 dual-mode MR imaging of cancer cells

机译:透明质酸改性Fe3O4靶向T-1 / T-2双模MR成像的透明质酸改性Fe3O4纳米复合材料的容易制剂

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摘要

We report a facile approach to synthesizing hyaluronic acid (HA)-modified Fe3O4@Mn3O4 nanocomposites (NCs) for targeted T-1/T-2 dual-mode magnetic resonance (MR) imaging of cancer cells. In this work, branched polyethyleneimine (PEI)-coated Fe3O4@Mn3O4 NCs (Fe3O4@Mn3O4-PEI NCs) were first synthesized via a one-pot hydrothermal route, followed by modification of HA on the particle surface via PEI amines. The formed Fe3O4@Mn3O4-PEI-HA NCs were well characterized via different techniques. Our results manifest that the formed Fe3O4@Mn3O4-PEI-HA NCs possess good water dispersibility, colloidal stability, cytocompatibility in the studied concentration range, and targeting specificity to CD44 receptor-overexpressing cancer cells. Due to the coexistence of Fe3O4 and Mn3O4 in the particles, the Fe3O4@Mn3O4-PEI-HA NCs display relatively high r(2) (143.26 mM (1) s (1)) and r(1) (2.15 mM (1) s (1)) relaxivities, and can be used as an efficient nanoprobe for targeted T-1/T-2 dual-mode MR imaging of cancer cells in vitro. The developed Fe3O4@Mn3O4-PEI-HA NCs may hold great promise to be used as a nanoplatform for theranostics of different biological systems.
机译:我们报告了一种用于合成透明质酸(HA)级化的Fe3O4 @ Mn3O4纳米复合材料(NCS)的透明质酸(HA)纳米复合材料(NCS),用于癌细胞的靶向T-1 / T-2双模磁共振(MR)成像。在这项工作中,首先通过单罐水热途径合成支化聚乙烯亚胺(PEI)涂覆的Fe3O4(Fe 3 O 4 NCS(Fe 3 O 4 NCS),然后通过PEI胺在颗粒表面上改变HA。通过不同的技术,所形成的Fe3O4 @ Mn3O 4-PEI-HA NCS精细地表征。我们的结果表明,所形成的Fe3O4 @ Mn3O4-PEI-HA NC具有良好的水分散性,胶体稳定性,在研究的浓度范围内具有细胞锁定性,以及针对CD44受体过表达癌细胞的特异性。由于Fe3O4和Mn3O4在颗粒中的共存,Fe3O4 @ Mn3O4-PEI-HA NCS显示相对高的R(2)(143.26mm(1)S(1))和R(1)(2.15mm(1) S(1))缓解性,并且可以用作体外癌细胞的靶向T-1 / T-2双模式MR成像的有效纳米孔。发达的Fe3O4 @ Mn3O4-PEI-HA NCS可能具有众多希望用作不同生物系统的治疗器的纳米片。

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  • 来源
    《RSC Advances》 |2016年第42期|共10页
  • 作者单位

    Donghua Univ Coll Chem Chem Engn &

    Biotechnol Shanghai 201620 Peoples R China;

    Donghua Univ Coll Chem Chem Engn &

    Biotechnol Shanghai 201620 Peoples R China;

    Donghua Univ Coll Chem Chem Engn &

    Biotechnol Shanghai 201620 Peoples R China;

    Donghua Univ Coll Chem Chem Engn &

    Biotechnol Shanghai 201620 Peoples R China;

    Donghua Univ Coll Chem Chem Engn &

    Biotechnol Shanghai 201620 Peoples R China;

    Donghua Univ Coll Chem Chem Engn &

    Biotechnol Shanghai 201620 Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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