1. Ultrasonic microbubbles promote mesenchymal stem cell homing to the fibrotic liver via upregulation of CXCR4 expression.
- Author
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Xu, Heming, Huang, Yize, Zhang, Fasu, Shi, Wei, Cheng, Yan, Yang, Kai, Tian, Pingping, Zhou, Fei, Wang, Yuan, Fang, Xueqing, Song, Youliang, Liu, Bo, and Liu, Liwei
- Subjects
CXCR4 receptors ,MICROBUBBLES ,MESENCHYMAL stem cells ,HEPATIC fibrosis ,ULTRASONICS - Abstract
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/cm
2 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. [ABSTRACT FROM AUTHOR]- Published
- 2024
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