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Enhancement of T-2-weighted MR contrast using heparin for cell tracking in vivo

机译:使用肝素进行肝素对体内细胞跟踪的T-2加权MR对比度

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摘要

Superparamagnetic iron oxide (SPIO) nanoparticle has emerged as a novel probe for noninvasively cellular tracking using magnetic resonance imaging. Here we developed SPIO nanoparticles coated with biocompatible heparin, i.e., low-molecular-weight-heparin (LMWH) or unfractionated heparin (UFH). These heparin-SPIO nanoparticles showed good crystallizability and stability without self-aggregation for 50 days. Also, UFH-SPIO nanoparticle had lower relaxation time with higher relaxivity. Moreover, they were efficiently internalized into cells without cytotoxicity and had faster saturated magnetization. Furthermore, the implanted SPIO nanoparticles-labeled Ins-1 cells were strongly visualized in vivo MR imaging. Collectively, heparin-based SPIO nanoparticles could have a great potential for in vivo cellular tracking. (C) 2017 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.
机译:超顺磁性氧化铁(SPIO)纳米颗粒已成为一种利用磁共振成像进行无创细胞追踪的新型探针。在这里,我们开发了用生物相容性肝素,即低分子量肝素(LMWH)或普通肝素(UFH)包覆的SPIO纳米颗粒。这些肝素SPIO纳米粒显示出良好的结晶性和稳定性,在50天内没有自聚集。此外,UFH-SPIO纳米颗粒具有较低的弛豫时间和较高的弛豫率。此外,它们在没有细胞毒性的情况下被有效地内化到细胞中,并且具有更快的饱和磁化。此外,植入的SPIO纳米颗粒标记的Ins-1细胞在体内磁共振成像中被强烈可视化。总的来说,基于肝素的SPIO纳米颗粒在体内细胞追踪方面具有巨大潜力。(C) 2017年,韩国工业与工程化学学会。由爱思唯尔B.V.出版。版权所有。

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