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Li C, Jiao G, Wu W, Wang H, Ren S, Zhang L, Zhou H, Liu H, Chen Y. Exosomes from Bone Marrow Mesenchymal Stem Cells Inhibit Neuronal Apoptosis and Promote Motor Function Recovery via the Wnt/β-catenin Signaling Pathway. Cell Transplant 2019; 28:1373-1383. [PMID: 31423807 PMCID: PMC6802144 DOI: 10.1177/0963689719870999] [Citation(s) in RCA: 68] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Severe spinal cord injury (SCI) is caused by external mechanical injury, resulting in
unrecoverable neurological injury. Recent studies have shown that exosomes derived from
bone marrow mesenchymal stem cells (BMSCs-Exos) might be valuable paracrine molecules in
the treatment of SCI. In this study, we designed SCI models in vivo and in vitro and then
investigated the possible mechanism of successful repair by BMSCs-Exos. In vivo, we
established one Sham group and two SCI model groups. The Basso, Beattie, Bresnahan (BBB)
scores showed that BMSCs-Exos could effectively promote the recovery of spinal cord
function. The results of the Nissl staining, immunohistochemistry, and TUNEL/NeuN/DAPI
double staining showed that BMSCs-Exos inhibited neuronal apoptosis. Western blot analysis
showed that the protein expression level of Bcl-2 was significantly increased in the
BMSCs-Exos group compared with the PBS group, while the protein expression levels of Bax,
cleaved caspase-3, and cleaved caspase-9 were significantly decreased. The results of
western bolt and qRT-PCR demonstrated that BMSCs-Exos could activate the Wnt/β-catenin
signaling pathway effectively. In vitro, we found that inhibition of the Wnt/β-catenin
signaling pathway could promote neuronal apoptosis following lipopolysaccharide (LPS)
induction. These results demonstrated that BMSCs-Exos may be a promising therapeutic for
SCI by activating the Wnt/β-catenin signaling pathway.
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Affiliation(s)
- Ci Li
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Shandong University Spine and Spine Cord Disease Research Center, Jinan, Shandong, China
| | - Guangjun Jiao
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Shandong University Spine and Spine Cord Disease Research Center, Jinan, Shandong, China
| | - Wenliang Wu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Shandong University Spine and Spine Cord Disease Research Center, Jinan, Shandong, China
| | - Hongliang Wang
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Shandong University Spine and Spine Cord Disease Research Center, Jinan, Shandong, China
| | - Shanwu Ren
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Shandong University Spine and Spine Cord Disease Research Center, Jinan, Shandong, China
| | - Lu Zhang
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Shandong University Spine and Spine Cord Disease Research Center, Jinan, Shandong, China
| | - Hongming Zhou
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Shandong University Spine and Spine Cord Disease Research Center, Jinan, Shandong, China
| | - Haichun Liu
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Shandong University Spine and Spine Cord Disease Research Center, Jinan, Shandong, China
| | - Yunzhen Chen
- Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, Shandong, China.,Department of Shandong University Spine and Spine Cord Disease Research Center, Jinan, Shandong, China
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Him A, Altuntaş S, Öztürk G, Erdoğan E, Cengiz N. Isolation and culture of adult mouse vestibular nucleus neurons. Turk J Med Sci 2017; 47:1903-1911. [PMID: 29306256 DOI: 10.3906/sag-1706-158] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Background/aim: Isolated cell cultures are widely used to study neuronal properties due to their advantages. Although embryonic animals are preferred for culturing, their morphological or electrophysiological properties may not reflect adult neurons, which may be important in neurodegenerative diseases. This paper aims to develop a method for preparing isolated cell cultures of medial vestibular nucleus (MVN) from adult mice and describe its morphological and electrophysiological properties.Materials and methods: Vestibular nucleus neurons were mechanically and enzymatically isolated and cultured using a defined medium with known growth factors. Cell survival was measured with propidium iodide, and electrophysiological properties were investigated with current-clamp recording.Results: Vestibular neurons grew neurites in cultures, gaining adult-like morphological properties, and stayed viable for 3 days in culture. Adding bovine calf serum, nerve growth factor, or insulin-like growth factor into the culture medium enhanced neuronal viability. Current-clamp recording of the cultured neurons revealed tonic and phasic-type neurons with similar input resistance, resting membrane potential, action potential amplitude, and duration. Conclusion: Vestibular neurons from adult mice can be cultured, and regenerate axons in a medium containing appropriate growth factors. Culturing adult vestibular neurons provides a new method to study age-related pathologies of the vestibular system.
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Geuna S, Raimondo S, Fregnan F, Haastert-Talini K, Grothe C. In vitromodels for peripheral nerve regeneration. Eur J Neurosci 2015; 43:287-96. [DOI: 10.1111/ejn.13054] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Revised: 08/03/2015] [Accepted: 08/20/2015] [Indexed: 01/10/2023]
Affiliation(s)
- S. Geuna
- Department of Clinical and Biological Sciences, and Cavalieri Ottolenghi Neuroscience Institute; University of Turin; Ospedale San Luigi, Regione Gonzole 10 10043 Orbassano Turin Italy
| | - S. Raimondo
- Department of Clinical and Biological Sciences, and Cavalieri Ottolenghi Neuroscience Institute; University of Turin; Ospedale San Luigi, Regione Gonzole 10 10043 Orbassano Turin Italy
| | - F. Fregnan
- Department of Clinical and Biological Sciences, and Cavalieri Ottolenghi Neuroscience Institute; University of Turin; Ospedale San Luigi, Regione Gonzole 10 10043 Orbassano Turin Italy
| | - K. Haastert-Talini
- Institute of Neuroanatomy; Hannover Medical School and Center for Systems Neuroscience (ZSN); Hannover Germany
| | - C. Grothe
- Institute of Neuroanatomy; Hannover Medical School and Center for Systems Neuroscience (ZSN); Hannover Germany
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