The present invention provides a means for transferring a therapeutic
gene of interest into a
nervous system cell by a highly-efficient and simpler means. More specifically, the present invention provides a recombinant vector that uses an adeno-associated
virus (AAV), a method for manufacturing the recombinant vector, and a method for using the recombinant vector. More specifically, recombinant adeno-associated
virus virions, which are capable of passing through the brain-brain barrier, for transferring a therapeutic genes of interest into a
nervous system cell in a highly-efficient manner, a
drug composition containing the recombinant adeno-associated
virus virions, a method for manufacturing the recombinant adeno-associated virus virions, and a kit or the like are provided.