Abstract:
:Neural progenitor cells (NPCs) transplanted into sites of spinal cord injury (SCI) extend large numbers of axons into the caudal host spinal cord. We determined the precise locations of neurons in the graft that extend axons into the caudal host spinal cord using AAV9-Cre-initiated retrograde tracing into floxed-TdTomato-expressing NPC grafts. 7,640 ± 630 grafted neurons extended axons to a single caudal host spinal cord site located 2 mm beyond the lesion, 5 weeks post injury. While caudally projecting axons arose from neurons located in all regions of the graft, the majority of caudally projecting graft neurons (53%) were located within the caudal one-third of the graft. Numerous host corticospinal axons formed monosynaptic projections onto caudally projecting graft neurons; however, we find that the majority of host axonal neuronal projections formed by neural progenitor cell interneuronal "relays" across sites of SCI are likely polysynaptic in nature.
journal_name
Stem Cell Reportsjournal_title
Stem cell reportsauthors
Lu P,Gomes-Leal W,Anil S,Dobkins G,Huie JR,Ferguson AR,Graham L,Tuszynski Mdoi
10.1016/j.stemcr.2019.05.011subject
Has Abstractpub_date
2019-07-09 00:00:00pages
105-114issue
1issn
2213-6711pii
S2213-6711(19)30178-Xjournal_volume
13pub_type
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journal_title:Stem cell reports
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journal_title:Stem cell reports
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journal_title:Stem cell reports
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journal_title:Stem cell reports
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journal_title:Stem cell reports
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journal_title:Stem cell reports
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journal_title:Stem cell reports
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journal_title:Stem cell reports
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