目的:周围神经损伤是一种世界范围内的疑难病,治疗的首要策略是通过轴突的再生来桥接神经病损。物理因素对轴突再生的促进作用逐渐被关注,精确控制的机械力对轴突生长具有重要作用。但如何在体内对轴突施加一个远程、无创、精确、可控的机械力是一个挑战。生物纳米技术的兴起为这个设想提供了可能。通过将磁性纳米粒子（MNPs）整合到神经细胞内,将其作为磁性操纵的执行器,利用外部磁场来影响细胞行为,从而实现对神经再生的指导与操控。“,”Peripheral nerve injuries, the worldwide difficult and complicated diseases, cause serious dysfunction but without ideal strategies to assist the successful treatment and recovery. The primary strategy to repair the peripheral nerve injuries is to bridge the lesions by promoting axon regeneration. The importance of mechanical factors in the nervous system has been appreciated only recently. It has been demonstrated that the application of external mechanical force is able to direct axonal outgrowth and to stimulate axonal elongation. For this purpose, to direct axonal growth cones n in vivo with accurate force appears to be a challenge that must be resolved. Bionanotechnology is promising a new tool that offers the possibility to influence the process of axonal regeneration. The magnetic force generated by the interaction between Magnetic nanoparticles (MNPs) and magnetic fields provides remote, non-invasive, accurate, and controllable lead and control of neuronal axon regeneration.n