Combination therapy with ultrasound and 2D nanomaterials promotes recovery after spinal cord injury via Piezo1 downregulation

Author:

Zhang Feng,He Xiaolie,Dong Kun,Yang Li,Ma Bei,Liu Yuchen,Liu Zhibo,Chen Bairu,Zhu Rongrong,Cheng Liming

Abstract

AbstractSpinal cord injury (SCI) causes severe neurological dysfunction and currently has no effective treatment. Due to the complex pathophysiological processes associated with SCI and the limited efficacy of single strategies, the need for combined strategies for effective SCI therapy is becoming increasingly apparent. In this study, we evaluated the combined effects of layered double hydroxide-coupled NT3 (MgFe-LDH/NT3) nanoparticles (NPs) and ultrasound (US) both in vitro and in vivo. Combined treatment promoted neural stem cell (NSC) differentiation into neurons and exerted anti-inflammatory effects in vitro. Furthermore, combined therapy promoted behavioural and electrophysiological performance at eight weeks in a completely transected murine thoracic SCI model. Additional RNA sequencing revealed that ultrasonic-induced Piezo1 downregulation is the core mechanism by which combined therapy promotes neurogenesis and inhibits inflammation, and the Piezo1/NF-κB pathways were identified. Hence, the findings of this study demonstrated that the combination of ultrasound and functional NPs may be a promising novel strategy for repairing SCI.

Funder

National Key Research and Development Program of China

National Natural Science Foundation of China

Basic Research Project of Shanghai Science and Technology Commission

China Postdoctoral Science Foundation

Shanghai Super Postdoctoral Incentive Program

Publisher

Springer Science and Business Media LLC

Subject

Pharmaceutical Science,Applied Microbiology and Biotechnology,Biomedical Engineering,Molecular Medicine,Medicine (miscellaneous),Bioengineering

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