Comprehensive Monosynaptic Rabies Virus Mapping of Host Connectivity with Neural Progenitor Grafts after Spinal Cord Injury

Andrew F. Adler, Corinne Lee-Kubli, Hiromi Kumamaru, Ken Kadoya, Mark H. Tuszynski

Research output: Contribution to journalArticle

19 Citations (Scopus)


Neural progenitor cells grafted to sites of spinal cord injury have supported electrophysiological and functional recovery in several studies. Mechanisms associated with graft-related improvements in outcome appear dependent on functional synaptic integration of graft and host systems, although the extent and diversity of synaptic integration of grafts with hosts are unknown. Using transgenic mouse spinal neural progenitor cell grafts expressing the TVA and G-protein components of the modified rabies virus system, we initiated monosynaptic tracing strictly from graft neurons placed in sites of cervical spinal cord injury. We find that graft neurons receive synaptic inputs from virtually every known host system that normally innervates the spinal cord, including numerous cortical, brainstem, spinal cord, and dorsal root ganglia inputs. Thus, implanted neural progenitor cells receive an extensive range of host neural inputs to the injury site, potentially enabling functional restoration across multiple systems.

Original languageEnglish
Pages (from-to)1525-1533
Number of pages9
JournalStem Cell Reports
Issue number6
Publication statusPublished - Jun 6 2017
Externally publishedYes


All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Genetics
  • Developmental Biology
  • Cell Biology

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