Host-to-graft propagation of inoculated α-synuclein into transplanted human induced pluripotent stem cell-derived midbrain dopaminergic neurons.

"Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper."

"We are thankful to the National BioResource Project - Rat (http://www.anim.med.kyoto-u.ac.jp/NBR/) for providing X-SCID rat strain F344-Il2rgem1Iexas. The study was supported by grants-in-aid from the Japan Society for the Promotion of Science (JSPS) KAKEN (grant number 22K07382 to KN, 20H03569 to KT), the Private University Research Branding Project for Ministry of Education, Culture, Sports, Science and Technology, the Kyoto Pharmaceutical University Fund for the Promotion of Scientific Research (KN), the Kyoto Pharmaceutical University Fund for the Collaborative Research (KT), the SDGs studies of Doshisha University (KN), and the Smoking Research Foundation (KT)."