机构：[1]Chongqing Key laboratory of Ultrasound Molecular Imaging, Second Affiliated Hospital of ChongqingMedical University, Chongqing, China[2]Ultrasound Medical Center, Sichuan Cancer Hospital Institute,Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China,Chengdu, China四川省人民医院四川省肿瘤医院[3]North Sichuan Medical College, Nanchong, China[4]Department of Pharmacology, WestChina School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan Province, China[5]Department of Anesthesiology, Sichuan Cancer Hospital & Institute, Sichuan Cancer Center, University ofElectronic Science and Technology of China, Chengdu, Sichuan Province, China四川省肿瘤医院
Reliable cell tracking is essential to understand the fate of stem cells following implantation, and thus promote the clinical application of stem cell therapy. Dual or multiple modal imaging modalities mediated by different types of multifunctional contrast agent are generally needed for efficient cell tracking. Here, we created a new contrast agent PLGA/iron oxide microparticles (PLGA/IO MPs) and characterized the morphology, structure and function of enhancing both photoacoustic (PA) and magnetic resonance imaging (MRI). Both PA and MRI signal increased with increased Fe concentration of PLGA/IO MPs. Fluorescent staining, Prussian blue staining and transmission electron microscope (TEM) certified that PLGA/IO MPs were successfully encapsulated in the labeled TSCs. The established PLGA/IO MPs demonstrated superior ability of dual-modal PA/MRI tracking of TSCs without cytotoxicity at relatively lower Fe concentrations (50, 100 and 200 mu g/mL). The optimal Fe concentration of PLGA/IO MPs was determined to be 100 mu g/mL, thus laying a foundation for the further study of dual-modal PA/MRI tracking of TSCs in vivo and promoting the repair of injured tendon.
基金：
National Natural Science Foundation of ChinaNational Natural Science Foundation of China [81571700]
第一作者机构：[1]Chongqing Key laboratory of Ultrasound Molecular Imaging, Second Affiliated Hospital of ChongqingMedical University, Chongqing, China[2]Ultrasound Medical Center, Sichuan Cancer Hospital Institute,Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China,Chengdu, China
通讯作者：
推荐引用方式(GB/T 7714)：
Lu Man,Cheng Xueqing,Jiang Jingzhen,et al.Dual-modal photoacoustic and magnetic resonance tracking of tendon stem cells with PLGA/iron oxide microparticles in vitro[J].PLOS ONE.2018,13(4):doi:10.1371/journal.pone.0193362.
APA：
Lu, Man,Cheng, Xueqing,Jiang, Jingzhen,Lie, TingTing,Zhang, Zhenqi...&Wang, Zhigang.(2018).Dual-modal photoacoustic and magnetic resonance tracking of tendon stem cells with PLGA/iron oxide microparticles in vitro.PLOS ONE,13,(4)
MLA：
Lu, Man,et al."Dual-modal photoacoustic and magnetic resonance tracking of tendon stem cells with PLGA/iron oxide microparticles in vitro".PLOS ONE 13..4(2018)
