Effects of diagnostic ultrasound-targeted microbubble destruction on the homing ability of bone marrow stromal cells to the kidney parenchyma.

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Bibliographic Details
Title:	Effects of diagnostic ultrasound-targeted microbubble destruction on the homing ability of bone marrow stromal cells to the kidney parenchyma.
Authors:	Wang, Gong¹ wanggong127@163.com, Zhang, Qian² xqsnzq@163.com, Zhuo, Zhongxiong¹ zzx64120@163.com, Wu, Shengzheng¹ wanggong127@hotmail.com, Liu, Zheng¹ wangg5@uw.edu, Xia, Hongmei¹ 550789302@qq.com, Tan, Kaibin¹ 546217589@qq.com, Zou, Linru¹ xqgaoyh@gmail.com, Gan, Ling¹ xqgaoyh@hotmail.com, Gao, Yunhua¹ xqgaoyh@outlook.com
Source:	European Radiology. Sep2016, Vol. 26 Issue 9, p3006-3016. 11p. 4 Color Photographs, 2 Black and White Photographs, 1 Chart, 1 Graph.
Subjects:	Mesenchymal stem cells, Kidney disease treatments, Fluorescent proteins, Diagnostic ultrasonic imaging, Microbubble diagnosis, Therapeutics, Kidney physiology, Connective tissue cells, Animal experimentation, Bone marrow transplantation, Enzyme-linked immunosorbent assay, Microscopy, Rats, Ultrasonic imaging, Western immunoblotting, Equipment & supplies, Physiology
Abstract:	Objectives: Bone marrow stromal cells (BMSC) transplantation proves successful in treating kidney disease and injury in many studies. However, their reparative capacity is limited by the poor homing ability in vivo, which is decided mainly by the local expression of chemoattractants. Our study explored the mechanical effects of ultrasound targeted microbubble destruction (UTMD) on BMSCs homing ability in treated kidney tissues.Methods: Rats were injected with red fluorescent protein (RFP)-labelled BMSCs and sonicated with microbubble-mediated ultrasound. Then, we tested kidney micro-environment changes induced and their influence on stem cell homing ability.Results: The results showed that the mechanical effects of UTMD would increase local and transient levels of chemoattractants (i.e. cytokines, integrins and growth factors) in targeted kidney tissues. Transmission electron microscopy showed that vascular endothelial cell was discontinuous in the UTMD group post-treatment, becoming smooth 72 h later. Confocal laser scanning microscopy and RT-PCR showed up to eight times more stem cells in the peritubular regions of experimental kidneys on days 1 and 3 post-treatment compared with the contralateral kidney.Conclusions: These results confirmed that renal micro-environment changes caused by appropriate UTMD may promote BMSC homing ability toward treated kidney tissues without renal toxicity and cell damage.Key Points: • This experiment showed a feasible strategy in promoting stem cell homing ability. • The treatment uses diagnostic ultrasound during enhancement with IV microbubbles. • A suitable micro-environment was important for targeted stem cell homing and retention. • The method is effective for stem cell homing to kidney diseases. • More work is required with larger animals before potential human trials. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

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