Heming Xu, Yize Huang, Fasu Zhang, Wei Shi, Yan Cheng, Kai Yang, Pingping Tian, Fei Zhou, Yuan Wang, Xueqing Fang, Youliang Song, Bo Liu, Liwei Liu
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Ultrasonic microbubbles promote mesenchymal stem cell homing to the fibrotic liver via upregulation of CXCR4 expression.
Objective: To investigate the mechanism of ultrasound microbubbles (UTMB) promoting stem cells homing to fibrotic liver.
Methods: Bone marrow derived mesenchymal stem cells (BMSCs) were divided into 5 groups with or without ultrasound microbubbles and continuously irradiated with ultrasound conditions of frequency 1 MHZ and output power 0.6 W/cm2 for different times, and then injected into a mouse model of liver fibrosis through the tail vein with or without ultrasound microbubbles, with sound intensity. The effect of ultrasound microbubbles on MSC expression of CXC chemokine receptor 4 (CXCR4) and homing fibrotic liver was evaluated by flow cytometry (FCM), western blot (WB) and immunohistochemistry (IHC) analysis.
Results: The level of CXCR4 expression was significantly higher in the ultrasound microbubble group than in the non-intervention group (P < 0.05), and the number of MSC and the rate of CXCR4 receptor positivity in the ultrasound microbubble-treated liver tissues were significantly higher than in the non-intervention group (P < 0.01).
Conclusion: Ultrasonic microbubbles can promote the expression of CXCR4 on the surface of MSCs, thus improving the homing rate of MSCs in fibrotic liver.
期刊介绍：
Cell Division is an open access, peer-reviewed journal that encompasses all the molecular aspects of cell cycle control and cancer, cell growth, proliferation, survival, differentiation, signalling, gene transcription, protein synthesis, genome integrity, chromosome stability, centrosome duplication, DNA damage and DNA repair.
Cell Division provides an online forum for the cell-cycle community that aims to publish articles on all exciting aspects of cell-cycle research and to bridge the gap between models of cell cycle regulation, development, and cancer biology. This forum is driven by specialized and timely research articles, reviews and commentaries focused on this fast moving field, providing an invaluable tool for cell-cycle biologists.
Cell Division publishes articles in areas which includes, but not limited to:
DNA replication, cell fate decisions, cell cycle & development
Cell proliferation, mitosis, spindle assembly checkpoint, ubiquitin mediated degradation
DNA damage & repair
Apoptosis & cell death
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