title: Combined Bone Mesenchymal Stem Cell and Olfactory Ensheathing Cell Transplantation Promotes Neural Repair Associated With CNTF Expression in Traumatic Brain-Injured Rats.
abstract: This study examined the role of bone mesenchymal stem cell (BMSC) and olfactory ensheathing cell (OEC) cografting on neural function and underlying molecular mechanisms in acute stage of traumatic brain injury (TBI) rats. Eighty Sprague-Dawley (SD) female rats were randomly divided into five groups (n = 16 per category): sham operated group (Sham), weight-drop-induced TBI group (TBI), BMSC transplantation group (BMSC), OEC transplantation group (OEC), and cotransplantation group (CO). Eight rats were randomly selected from each group for behavioral and morphological assessment. Another category (n = 8 rats) was employed in the genetic expression detection. BMSCs were isolated from GFP mice and identified by CD44 antibody. OECs were isolated from the SD rats, identified by P75 antibody and labeled by Hoechst 33342. They were then transplanted into the surrounding tissue of the epicenter of TBI rats. The result of neurological severity scores revealed that BMSC or OEC transplantation alone and BMSC and OEC cografting significantly ameliorated the neurological deficits of TBI rats. Quantitative immunohistochemical analysis showed that graft-recipient animals possessed dramatically more neurons and regenerated axons and smaller amounts of astrocytes than controls 14 days posttransplantation (p < 0.05). However, the expressional level of ciliary neurotrophic factor significantly decreased in the cografting group as determined by RT-PCR (p < 0.05), and the Janus kinase/signal transducer and activator of transcription pathway was significantly activated at 7 days after cell transplantation (p < 0.05). This study is the first to report the role of cotransplantation of BMSCs and OECs in the therapy of TBI and explore its potential molecular mechanisms, therefore providing the important morphological and molecular biological evidence for the clinical application of BMSC and/or OEC transplantation in TBI.
authors.affiliation: Shenzhen Children's Hospital, Shenzhen, Guangdong, China.
authors.forename: Xue-Mei
authors.initials: XM
authors.lastname: Fu
authors.forename: Su-Juan
authors.initials: SJ
authors.lastname: Liu
authors.forename: Qi-Qin
authors.initials: QQ
authors.lastname: Dan
authors.forename: Yan-Ping
authors.initials: YP
authors.lastname: Wang
authors.forename: Na
authors.initials: N
authors.lastname: Lin
authors.forename: Long-Yun
authors.initials: LY
authors.lastname: Lv
authors.forename: Yu
authors.initials: Y
authors.lastname: Zou
authors.forename: Su
authors.initials: S
authors.lastname: Liu
authors.forename: Xue
authors.initials: X
authors.lastname: Zhou
authors.forename: Ting-Hua
authors.initials: TH
authors.lastname: Wang
mesh_terms: D000818:Animals; D001854:Bone Marrow Cells / Q000166:cytology; D001930:Brain Injuries / Q000473:pathology / Q000628:therapy*; D002454:Cell Differentiation; D002465:Cell Movement; D002470:Cell Survival; D020934:Ciliary Neurotrophic Factor / Q000235:genetics / Q000378:metabolism*; D005260:Female; D007150:Immunohistochemistry; D053612:Janus Kinases / Q000378:metabolism; D008297:Male; D045164:Mesenchymal Stem Cell Transplantation; D059630:Mesenchymal Stem Cells / Q000166:cytology / Q000378:metabolism*; D051379:Mice; D008810:Mice, Inbred C57BL; D008822:Mice, Transgenic; D009474:Neurons / Q000166:cytology; D009830:Olfactory Bulb / Q000166:cytology / Q000637:transplantation*; D051381:Rats; D017207:Rats, Sprague-Dawley; D050796:STAT3 Transcription Factor / Q000378:metabolism
chemical_list: D020934:Ciliary Neurotrophic Factor; D050796:STAT3 Transcription Factor; D053612:Janus Kinases