Real-time video imaging of protease expression in vivo.

Real-time video imaging of protease expression in vivo.
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体内蛋白酶表达的实时视频成像

DOI:
10.7150/thno/v01p0018
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发表时间:
2011
期刊:
影响因子:
12.4
通讯作者:
Chen X
Chen X
中科院分区:
医学1区
文献类型:
--
作者:
Zhu L;Xie J;Swierczewska M;Zhang F;Quan Q;Ma Y;Fang X;Kim K;Lee S;Chen X

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我们展示了第一个真正的实时活体视频成像胞外蛋白水解酶表达使用超快的作用和延长使用可激活的探针。在小动物模型中,这种简单的一步技术能够在注射后30分钟内增强目标蛋白酶裂解的荧光信号,并能够保持长达24小时的强荧光信号。使用这种方法,我们对基质金属蛋白酶(MMPs)在荷瘤小鼠模型中的表达和抑制进行了视频成像。目前的平台可以普遍适用于任何具有已知多肽底物的靶标蛋白水解酶,并适用于高吞吐量的广泛实时成像应用,如体内药物筛选、药物疗效检查以及动物模型中疾病发生和发展的监测。
We demonstrate the first true real-time in vivo video imaging of extracellular protease expression using an ultrafast-acting and extended-use activatable probe. This simple, one-step technique is capable of boosting fluorescent signals upon target protease cleavage as early as 30 minutes from injection in a small animal model and is able to sustain the strong fluorescent signal up to 24 hours. Using this method, we video imaged the expression and inhibition of matrix metalloproteinases (MMPs) in a tumor-bearing mouse model. The current platform can be universally applied to any target protease of interest with a known peptide substrate and is adaptable to a wide range of real-time imaging applications with high throughputs such as for in vivo drug screening, examinations of the therapeutic efficacy of drugs, and monitoring of disease onset and development in animal models.
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发表时间: 2001-06-01
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