Ferumoxytol: a new, clinically applicable label for stem-cell tracking in arthritic joints with MRI.

Ferumoxytol: a new, clinically applicable label for stem-cell tracking in arthritic joints with MRI.
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Ferumoxytol:通过磁共振成像追踪关节炎关节干细胞的新临床应用标签。

DOI:
10.2217/nnm.12.198
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发表时间:
2013-12
期刊:
Nanomedicine (London, England)
影响因子:
--
通讯作者:
Daldrup-Link HE
Daldrup-Link HE
中科院分区:
其他
文献类型:
--
作者:
Khurana A;Nejadnik H;Chapelin F;Lenkov O;Gawande R;Lee S;Gupta SN;Aflakian N;Derugin N;Messing S;Lin G;Lue TF;Pisani L;Daldrup-Link HE

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使用美国FDA批准的铁补充剂ferumoxytol,开发一种临床适用的MRI技术,用于跟踪基质相关干细胞植入物中的干细胞。体外优化脂肪干细胞(ADSCs)的Ferumoxytol标记。共11只双侧股骨骨软骨缺损的大鼠植入了ferumoxytol或ferumoxides标记或未标记的ADSC,并在基质相关干细胞植入后4周进行MRI。用t检验比较不同基质相关干细胞植入物的信噪比,并与组织病理学相关。500 μg铁/ml ferumoxytol和10 μg/ml硫酸鱼精蛋白的孵育浓度导致显著的细胞铁摄取、T2信号效应和未受损的ADSC活力。在体内,与未标记的对照相比,ferumoxytol和ferumoxides标记的ADSC表现出显著较低的信噪比值(p < 0.01)。组织学证实了标记的ADSC的植入,随着时间的推移,铁标记物缓慢稀释。Ferumoxytol可用于在MRI下体内追踪干细胞。
To develop a clinically applicable MRI technique for tracking stem cells in matrix-associated stem-cell implants, using the US FDA-approved iron supplement ferumoxytol. Ferumoxytol-labeling of adipose-derived stem cells (ADSCs) was optimized in vitro. A total of 11 rats with osteochondral defects of both femurs were implanted with ferumoxytol- or ferumoxides-labeled or unlabeled ADSCs, and underwent MRI up to 4 weeks post matrix-associated stem-cell implant. The signal-to-noise ratio of different matrix-associated stem-cell implant was compared with t-tests and correlated with histopathology. An incubation concentration of 500 µg iron/ml ferumoxytol and 10 µg/ml protamine sulfate led to significant cellular iron uptake, T2 signal effects and unimpaired ADSC viability. In vivo, ferumoxytol-and ferumoxides-labeled ADSCs demonstrated significantly lower signal-to-noise ratio values compared with unlabeled controls (p < 0.01). Histopathology confirmed engraftment of labeled ADSCs, with slow dilution of the iron label over time. Ferumoxytol can be used for in vivo tracking of stem cells with MRI.
DOI: 10.1007/s11307-010-0322-0
发表时间: 2011-02-01
影响因子: 3.1
作者:
Boddington, Sophie E.;Sutton, Elizabeth J.;Daldrup-Link, Heike E.
通讯作者: Daldrup-Link, Heike E.
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发表时间: 2003-09-01
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影响因子: 19.7
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发表时间: 2009-02-01
影响因子: --
作者:
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DOI: 10.2214/ajr.09.3107
发表时间: 2009-08
期刊: AJR. American journal of roentgenology
影响因子: --
作者:
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通讯作者: Bulte JW