Neurodegenerative diseases are considered to be incurable at this moment. Unfortunately, no one can satisfy this unmet medical need now. To provide an ultimate solution to the diseases, “Autologous Neural Stem Cell (ANSc) Harvest Technology” can harvest adult neural stem cells from a living brain without causing any damage to the patients and replace the degenerating and damaged neural cells for recovery. Our tailor-made magnetic nanoparticles are used for extracting active adult neural stem cells by recognizing the markers expressed on the cells. The risks of immune rejection, tumor formation, and genetic instability can be minimized as the cells are originated from the patients themselves.