Ontology highlight
ABSTRACT: Aims
Olig2 is one of the most critical factors during CNS development, which belongs to b-HLH transcription factor family. Previous reports have shown that Olig2 regulates the remyelination processes in CNS demyelination diseases models. However, the role of Olig2 in contusion spinal cord injury (SCI) and the possible therapeutic effects remain obscure. This study aims to investigate the effects of overexpression Olig2 by lentivirus on adult spinal cord injury rats.Methods
Lenti-Olig2 expression and control Lenti-eGFP vectors were prepared, and virus in a total of 5 ?L (108 TU/mL) was locally injected into the injured spinal cord 1.5 mm rostral and caudal near the epicenter. Immunostaining, Western blot, electron microscopy, and CatWalk analyzes were employed to investigate the effects of Olig2 on spinal cord tissue repair and functional recovery.Results
Injection of Lenti-Olig2 significantly increased the number of oligodendrocytes lineage cells and enhanced myelination after SCI. More importantly, the introduction of Olig2 greatly improved hindlimb locomotor performances. Other oligodendrocyte-related transcription factors, which were downregulated or upregulated after injury, were reversed by Olig2 induction.Conclusions
Our findings provided the evidence that overexpression Olig2 promotes myelination and locomotor recovery of contusion SCI, which gives us more understanding of Olig2 on spinal cord injury treatment.
SUBMITTER: Tan BT
PROVIDER: S-EPMC6492694 | biostudies-literature | 2017 Jun
REPOSITORIES: biostudies-literature
Tan Bo-Tao BT Jiang Long L Liu Li L Yin Ying Y Luo Ze-Ru-Xin ZR Long Zai-Yun ZY Li Sen S Yu Le-Hua LH Wu Ya-Min YM Liu Yuan Y
CNS neuroscience & therapeutics 20170427 6
<h4>Aims</h4>Olig2 is one of the most critical factors during CNS development, which belongs to b-HLH transcription factor family. Previous reports have shown that Olig2 regulates the remyelination processes in CNS demyelination diseases models. However, the role of Olig2 in contusion spinal cord injury (SCI) and the possible therapeutic effects remain obscure. This study aims to investigate the effects of overexpression Olig2 by lentivirus on adult spinal cord injury rats.<h4>Methods</h4>Lenti- ...[more]