The application discloses application of Neuritin in preparation of a
medicine for promoting healing of a
diabetic wound. The application proves for the first time through experiments that Neuritin expression in
wound edge tissue and surrounding sensory neurons is significantly up-regulated after
skin damage, and Neuritin expression is significantly down-regulated under a diabetic condition. By constructing a
nervous system conditional knock-out and a
sensory neuron specific knock-out Neuritin mouse, it is proved that
wound healing is significantly delayed after Neuritin is knocked out. By means of
spinal cord site injection of an AAV
virus to overexpress Neuritin in a DRG and
skin electroporation technology to locally overexpress Neuritin in the
skin, it is proved that overexpression of Neuritin can significantly promote
wound healing of type 1 and type 2 diabetic mice. The application provides a brand-new target and strategy for treatment of a diabetic
refractory wound, and has a good clinical transformation prospect.