Imaging Doxorubicin Free Radical in Mice with Overhauser Enhanced MRI and its Tumor Suppression Effect in Mice

Imaging Doxorubicin Free Radical in Mice with Overhauser Enhanced MRI and its Tumor Suppression Effect in Mice
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Overhauser增强MRI对小鼠阿霉素自由基的成像及其对小鼠的抑瘤作用

DOI:
10.1007/s00723-018-1004-3
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发表时间:
2018
影响因子:
1
通讯作者:
Ichikawa K
Ichikawa K
中科院分区:
物理与天体物理4区
文献类型:
--
作者:
Kato N;Sato S;Yamada K;Ichikawa K

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在用抗癌药物治疗时,重要的是以适当的浓度将抗癌剂递送至肿瘤的靶部位。然而,直接测量药剂的分布量是困难的,并且利用其肿瘤抑制效果来评价抗癌药物的效果。在这项研究中,我们报告了一种使用 Overhauser 增强磁共振成像 (OMRI) 可视化荷瘤小鼠模型中抗癌药物分布的方法。该药物阿霉素是一种蒽环类抗癌药物,可以在其醌位点形成自由基,并且可以使用 OMRI 进行可视化。直接注射到肿瘤后,阿霉素自由基在荷瘤小鼠中成功成像,证明了 OMRI 在自由基化合物药效学研究中的实际用途。抗肿瘤药物的成像可能可作为癌症局部化疗的图像引导治疗的指导工具。
In the treatment with anticancer drugs, it is important to deliver an anticancer agent to target site of the tumor at an appropriate concentration. However, it is difficult to directly measure the distribution amount of the agent and effect of anticancer drug is evaluated using its tumor suppression effect. In this study, we report an approach to visualizing an anticancer agent distribution in tumor-bearing mouse model using Overhauser enhanced magnetic resonance imaging (OMRI). The agent, doxorubicin, is one of anthracycline anticancer drugs and can form a free radical at its quinone sites and could be visualized using OMRI. After direct injection into a tumor, doxorubicin free radical was successfully imaged in tumor-bearing mouse, demonstrating practical usefulness of OMRI in the study of pharmacodynamics of free radical compounds. Imaging of antitumor agent would be potentially useful as a guidance tool for image-guided-therapy of cancer local chemotherapy.
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