Abstract
Treatment of large gaps in peripheral nerves is a major clinical challenge. Artificial nerve guidance conduits (NGCs) have provided new opportunities for guiding nerve regeneration. In this study, multifunctional black phosphorus (BP) hydrogel NGCs loaded with neuregulin 1 (Nrg1) were fabricated to support peripheral-nerve regeneration: they exhibited good flexibility and nerve regeneration-related cell induction, promoted Schwann-cell proliferation and accelerated neuron-branch elongation. Nrg1 induced the proliferation and migration of Schwann cells, which had beneficial roles in promoting nerve regeneration. In vivo immunofluorescence studies revealed BP hydrogel NGCs loaded with Nrg1 promoted sciatic-nerve regeneration and axon remyelination. Our method has great potential for promoting treatment of peripheral-nerve injuries.
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