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Division of Cardiovascular Medicine, Stanford University
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Yamada, M., Yang, P. In vitro Labeling of Human Embryonic Stem Cells for Magnetic Resonance Imaging. J. Vis. Exp. (18), e827, doi:10.3791/827 (2008).
人类胚胎干细胞(胚胎干细胞)已经证明能够恢复受伤的心肌。磁共振成像(MRI)已成为主要的成像方法之一来评估受伤的心肌恢复。此外,前体内标签剂,如氧化铁纳米粒子,已被用于跟踪和本地化移植的干细胞。但是,这种方法不监视一个基本的细胞生物学特性,细胞移植的可行性。它已经知道,氯化锰(MnCl 2)进入细胞,通过电压门控钙( 钙离子)当细胞生物活性的渠道,并积累细胞内产生T 1缩短的效果。因此,我们建议,锰制导MRI可有用的监视后的人类胚胎干细胞移植到心肌细胞的活力。
在这段视频中,我们将展示如何与MnCl 2和如何使用MRI体外,这些细胞可以清楚地看到标签的人类胚胎干细胞。与此同时,生物活性的Ca 2 +渠道将调制利用双方的Ca 2 +通道激动剂和拮抗剂,以评估随之而来的信号变化。
人类胚胎干细胞的锰标签
铁人类胚胎干细胞的标记
执行蜂窝磁共振成像
MRI结果分析
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这些结果表明,锰输入通过电压门控性钙通道,锰可作为MRI造影剂的使用,还可以显示细胞活力。因此,我们建议,锰制导MRI可有用的监视后,人类胚胎干细胞移植到心肌细胞活力。
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| Name | Type | Company | Catalog Number | Comments |
| Manganese chloride tetrahydrate | Reagent | Sigma-Aldrich | M8054 | |
| (S)-(-)-Bay K8644 | Reagent | Sigma-Aldrich | B133 | |
| (+)-Verapamil hydrochloride, minimum 99.0% titration | Reagent | Sigma-Aldrich | V4629 | |
| Sodium Chloride 0.85-0.90% W/V | Reagent | VWR international | VW 3257-1 | |
| Feridex I.V. | Reagent | Berlex Laboratories | NDC 59338-7035-5 | ferumoxides injectable solution 11.2mg iron/mL |
| Protamine sulfate | Reagent | American Pharmaceutical Partners | NDC 63323-229-05 | 50 mg (10 mg/mL) |
| Knockout SR (Serum replacement for ES cells) | Reagent | GIBCO, by Life Technologies | 10828 | |
| DMEM/F12 (1:1) | Reagent | GIBCO, by Life Technologies | 11330 | |
| 2- mercaptoethanol 98+% | Reagent | Sigma-Aldrich | M 3148 | |
| L-Glutamine 200mM 100x | Reagent | GIBCO, by Life Technologies | 25030 | |
| Penicillin-Streptomyocin 10,000 units/ml | Reagent | GIBCO, by Life Technologies | 15140-122 | |
| MEM Non-Essential Amino Acids 100x solution | Reagent | GIBCO, by Life Technologies | 11140 | |
| Signa HDx 3T MRI | Tool | GE Healthcare | ||
| clinical Knee coil | Tool | GE Healthcare | ||
| DPBS | Reagent | GIBCO, by Life Technologies | 14190 |
1. Bruvold, M., Nordhoy, W., Anthonsen, H. W., Brurok, H. & Jynge, P. Manganese-calcium interactions with contrast media for cardiac magnetic resonance imaging: a study of manganese chloride supplemented with calcium gluconate in isolated Guinea pig hearts. Invest Radiol 40, 117-25 (2005).
2. Aoki, I. et al. Cell labeling for magnetic resonance imaging with the T1 agent manganese chloride. NMR Biomed 19, 50-9 (2006).
3. Arbab, A. S. et al. Efficient magnetic cell labeling with protamine sulfate complexed to ferumoxides for cellular MRI. Blood 104, 1217-23 (2004).
4. Arbab, A. S. & Frank, J. A. Cellular MRI and its role in stem cell therapy. Regen Med 3, 199-215 (2008).
I like this kind of publication very much. It showed me the experiment in details and most important, the author offered me many tips. I learned a lot. Thanks for your beautiful work!
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ReplyPosted by: Haitao ZhangOctober 21, 2008, 10:26 PM