Weihong Ge
Xiao Hu
Chen Li
Chia-Ming Lee
Liqiang Zhou
Zhourui Wu
Juehua Yu
Sheng Lin
Jing Yu
Wei Xu
Lei Chen
Chong Zhang
Kun Jiang
Xingfei Zhu
Haotian Li
Xinpei Gao
Yanan Geng
Bo Jing
Zhen Wang
Changhong Zheng
Rongrong Zhu
Qiao Yan
Quan Lin
Keqiang Ye
Yi E. Sun
Liming Cheng
1 Division of Spine Surgery, Department of Orthopedics, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China;
2 Institute of Spine and Spine Cord Injury of Tongji University, Shanghai 200065, China;
3 Stem Cell Translational Research Center, Tongji Hospital, Tongji University School of Medicine, Shanghai 200065, China;
4 Department of Psychiatry and Biobehavioral Sciences, David Geffen School of Medicine, University of California Los Angeles, Los Angeles, CA 90095, USA;
5 Department of Pathology and Laboratory Medicine, Center for neurodegeneration disease, Emory University School of Medicine, Atlanta, GA 30322, USA
Funds: and the National Natural Science Foundation of China (Grant Nos. 81330030, 31620103904 and 81650110524), as well as grants from the National Institutes of Health (NIH5R21NS095184-02) and the "RNAseq on Single Cell and beyond Core" in the Developmental Disabilities Research Center (NIH5U54HD087101-02) at University of California Los Angeles. We also thank Dr. Ellen Carpenter for her critical reading of the manuscript.
This work was supported by the National Key Basic Research Program from MOST, China (Nos. 2016YFA0100801 and 2014CB964602)
Received Date: 2018-04-22
Rev Recd Date:2018-05-26
Abstract
Abstract
The mammalian central nervous system (CNS) is considered an immune privileged system as it is separated from the periphery by the blood brain barrier (BBB). Yet, immune functions have been postulated to heavily influence the functional state of the CNS, especially after injury or during neurodegeneration. There is controversy regarding whether adaptive immune responses are beneficial or detrimental to CNS injury repair. In this study, we utilized immunocompromised SCID mice and subjected them to spinal cord injury (SCI). We analyzed motor function, electrophysiology, histochemistry, and performed unbiased RNA-sequencing. SCID mice displayed improved CNS functional recovery compared to WT mice after SCI. Weighted gene-coexpression network analysis (WGCNA) of spinal cord transcriptomes revealed that SCID mice had reduced expression of immune function-related genes and heightened expression of neural transmission-related genes after SCI, which was confirmed by immunohistochemical analysis and was consistent with better functional recovery. Transcriptomic analyses also indicated heightened expression of neurotransmission-related genes before injury in SCID mice, suggesting that a steady state of immune-deficiency potentially led to CNS hyper-connectivity. Consequently, SCID mice without injury demonstrated worse performance in Morris water maze test. Taken together, not only reduced inflammation after injury but also dampened steady-state immune function without injury heightened the neurotransmission program, resulting in better or worse behavioral outcomes respectively. This study revealed the intricate relationship between immune and nervous systems, raising the possibility for therapeutic manipulation of neural function via immune modulation.Keywords: spinal cord injury repair,
immune deficiency,
transcriptomic analysis,
neurotransmision
PDF全文下载地址:
http://www.protein-cell.org/article/exportPdf?id=2d9a3035-8c8f-4a03-8048-e74ad79ee966&language=en
