This invention discloses a neurofilament light chain
protein derivative,
biomaterial, and its applications. The neurofilament light chain
protein derivative is a
protein based on the neurofilament light chain protein or its homologous protein with the sequence shown in SEQ ID NO: 1, wherein one or more
amino acid residues in the Coil 2B region have pharmaceutically acceptable modifications or mutations. This invention designs and constructs a neurofilament light chain protein K316Q
mutant by
acetylation-mimicking
mutation of the neurofilament light chain protein, which exhibits significant effects in promoting nerve growth and regeneration. This
mutant can enhance the stability and function of neurofilament networks, promote the expansion of axonal growth cones, and directly target the intrinsic growth capacity of neurons, demonstrating excellent clinical translational potential.