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Zhu M, Tan J, Liu L, Tian J, Li L, Luo B, Zhou C, Lu L. Construction of biomimetic artificial intervertebral disc scaffold via 3D printing and electrospinning. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 128:112310. [PMID: 34474861 DOI: 10.1016/j.msec.2021.112310] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 07/07/2021] [Accepted: 07/08/2021] [Indexed: 12/16/2022]
Abstract
Intervertebral disc (IVD) degeneration is a clinically disease that seriously endangers people's health. Tissue engineering provides a promising method to repair and regenerate the damaged IVD physiological function. Successfully tissue-engineered IVD scaffold should mimic the native IVD histological and macro structures. Here, 3D printing and electrospinning were combined to construct an artificial IVD composite scaffold. Poly lactide (PLA) was used to print the IVD frame structure, the oriented porous poly(l-lactide)/octa-armed polyhedral oligomeric silsesquioxanes (PLLA/POSS-(PLLA)8) fiber bundles simulated the annulus fibrosus (AF), and the gellan gum/poly (ethylene glycol) diacrylate (GG/PEGDA) double network hydrogel loaded with bone marrow mesenchymal stem cells (BMSCs) simulated the nucleus pulposus (NP) structure. Morphological and mechanical tests showed that the structure and mechanical properties of the IVD scaffold were similar to that of the natural IVD. The compression modulus of the scaffold is about 10 MPa, which is comparable to natural IVD and provides good mechanical support for tissue repair and regeneration. At the same time, the porosity and mechanical properties of the scaffold can be regulated through the 3D model design. In the AF structure, the fiber bundles are oriented concentrically with each subsequent layer oriented 60° to the spinal column, and can withstand the tension generated during the deformation of the NP. In the NP structure, BMSCs were evenly distributed in the hydrogel and could maintain high cell viability. Animal experiment results demonstrated that the biomimetic artificial IVD scaffold could maintain the disc space and produce the new extracellular matrix. This engineered biomimetic IVD scaffold is a promising biomaterial for individualized IVD repair and regeneration.
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Affiliation(s)
- Meiling Zhu
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Jianwang Tan
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Lu Liu
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Jinhuan Tian
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Lihua Li
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Binghong Luo
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Changren Zhou
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China
| | - Lu Lu
- Department of Materials Science and Engineering, Jinan University, Guangzhou 510632, China.
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Hu Y, Zhang Y, Tian K, Xun C, Wang S, Lv D. Effects of nerve growth factor and basic fibroblast growth factor dual gene modification on rat bone marrow mesenchymal stem cell differentiation into neuron-like cells in vitro. Mol Med Rep 2015; 13:49-58. [PMID: 26572749 PMCID: PMC4686117 DOI: 10.3892/mmr.2015.4553] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2014] [Accepted: 08/26/2015] [Indexed: 12/26/2022] Open
Abstract
Recent studies regarding regenerative medicine have focused on bone marrow mesenchymal stem cells (BMSCs), which have the potential to undergo neural differentiation, and may be transfected with specific genes. BMSCs can differentiate into neuron-like cells in certain neurotropic circumstances in vitro. Basic fibroblast growth factor (bFGF) and nerve growth factor (NGF) are often used to induce neural differentiation in BMSCs in vitro. However, previous studies regarding their combined actions are insufficient. The present study is the first, to the best of our knowledge, to thoroughly assess the enhancement of neural differentiation of BMSCs following transfection with bFGF and NGF. Sprague-Dawley (SD) rat BMSCs were separated through whole bone marrow adherence, and were then passaged to the third generation. The cells were subsequently divided into five groups: The control group, which consisted of untransfected BMSCs; the plv-blank-transfected BMSCs group; the plv-bFGF-trans-fected BMSCs group; the plv-NGF-transfected BMSCs group; and the plv-NGF-bFGF co-transfected BMSCs group. Cell neural differentiation was characterized in terms of stem cell molecular expression, and the neuronal morphology and expression of neural-like molecules was detected in each of the groups. A total of 72 h post-transfection, the expression levels of neuron-specific enolase, glial fibrillary acidic protein, and nestin protein, were higher in the co-transfected group, as compared with the other groups, the expression levels of β-tubulin III were also increased in the co-transfected cells, thus suggesting the maturation of differentiated neuron-like cells. Furthermore, higher neuronal proliferation was observed in the co-transfected group, as compared with the other groups at passages 2, 4, 6 and 8. Western blotting demonstrated that the transfected groups exhibited a simultaneous increase in phosphorylation of the AKT and extracellular signal-regulated kinases (ERK) signaling pathway. These results suggested that manipulation of the ERK and AKT signaling pathway may be associated with the differentiation of transfected BMSCs.
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Affiliation(s)
- Yang Hu
- Department of Orthopedics, The First Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Yan Zhang
- Institute of Cancer Stem Cells, Cancer Center, Dalian Medical University, Dalian, Liaoning 116044, P.R. China
| | - Kang Tian
- Department of Orthopedics, The First Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Chong Xun
- Department of Orthopedics, The First Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Shouyu Wang
- Department of Orthopedics, The First Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116011, P.R. China
| | - Decheng Lv
- Department of Orthopedics, The First Hospital Affiliated to Dalian Medical University, Dalian, Liaoning 116011, P.R. China
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Zhao F, Qu Y, Liu H, Du B, Mu D. Umbilical cord blood mesenchymal stem cells co-modified by TERT and BDNF: a novel neuroprotective therapy for neonatal hypoxic-ischemic brain damage. Int J Dev Neurosci 2014; 38:147-54. [PMID: 24999119 DOI: 10.1016/j.ijdevneu.2014.06.014] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2014] [Revised: 06/18/2014] [Accepted: 06/25/2014] [Indexed: 01/01/2023] Open
Abstract
Hypoxic-ischemic brain damage (HIBD), a leading cause of perinatal disability and death, has limited therapeutic options. Stem cell therapy has been demonstrated as a potential novel therapy for neurological disorders. Compared with other types of stem cells, umbilical cord blood mesenchymal stem cells (UCB-MSCs) have several unique characteristics, such as a higher rate of cell proliferation and clonality. However, the limited life span of UCB-MSCs hinders their clinical application. Therefore, efforts are urgently needed to circumvent this disadvantage. Telomerase reverse transcriptase (TERT), which promotes cell proliferation and survival, plays a protective role in hypoxic-ischemic (HI) brain injury. Thus, it is reasonable to propose that UCB-MSCs modified by exogenous TERT expression might have a longer lifespan and increased viability. Moreover, brain-derived neurotrophic factor (BDNF), a neurotrophin that regulates development, regeneration, survival and maintenance of neurons, facilitates post-injury recovery when administered by infusion or virus-mediated delivery. Therefore, TERT- and BDNF-modified UCB-MSCs may have a longer lifespan and also maintain neural differentiation, thus promoting the recovery of neurological function following hypoxic-ischemic brain damage (HIBD) and thereby representing a new effective strategy for HIBD in neonates.
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Affiliation(s)
- Fengyan Zhao
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China; Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu 610041, China
| | - Yi Qu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China; Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu 610041, China
| | - Haiting Liu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China; Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu 610041, China
| | - Baowen Du
- Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China
| | - Dezhi Mu
- Department of Pediatrics, West China Second University Hospital, Sichuan University, Chengdu 610041, China; Key Laboratory of Obstetric & Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, Sichuan University, Chengdu 610041, China; Department of Pediatrics and Neurology, University of California, San Francisco, CA 94143, USA.
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Wang F, Chang G, Geng X. NGF and TERT co-transfected BMSCs improve the restoration of cognitive impairment in vascular dementia rats. PLoS One 2014; 9:e98774. [PMID: 24887495 PMCID: PMC4041744 DOI: 10.1371/journal.pone.0098774] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Accepted: 05/06/2014] [Indexed: 11/25/2022] Open
Abstract
Vascular dementia (VaD) is a mental disorder caused by brain damage due to cerebrovascular disease, and incidence of VaD is rising. To date, there is no known effective cure for VaD, so effort in developing an effective treatment for VaD is of great importance. The differentiation plasticity of BMSCs, in conjunction with its weak immunogenicity, makes manipulated BMSCs an attractive strategy for disease treatment. However, BMSCs often display disabled differentiation, premature aging, and unstable proliferation, reducing their neuroprotective function. These problems may be caused by the lack of telomerase activity in BMSCs. Our results show that NGF-TERT co-transfected BMSCs have a better therapeutic effect than BMSCs lacking NGF and TERT expression, demonstrated by significant improvements in learning and memory in VaD rats. The underlying mechanism might be increased expression of NGF, TrkA and SYN in the hippocampal CA1 area, which has potential implication in advancing therapeutics for VaD.
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Affiliation(s)
- Fei Wang
- Department of Neurology, General Hospital, Tianjin Medical University, Tianjin, China,
| | - Guangming Chang
- Department of clinical laboratory, General Hospital, Tianjin Medical University, Tianjin, China
| | - Xin Geng
- Department of Biochemistry and Molecular Biology, Tianjin Medical University, Tianjin, China
- Tianjin Key Laboratory of Cellular and Molecular Immunology, Tianjin, China
- Key Laboratory of Educational Ministry of China, Tianjin, China
- * E-mail:
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Yuan J, Huang G, Xiao Z, Lin L, Han T. Overexpression of β-NGF promotes differentiation of bone marrow mesenchymal stem cells into neurons through regulation of AKT and MAPK pathway. Mol Cell Biochem 2013; 383:201-11. [PMID: 23934089 DOI: 10.1007/s11010-013-1768-6] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2013] [Accepted: 08/02/2013] [Indexed: 02/03/2023]
Abstract
Bone marrow stromal stem cells (BMSCs) are fibroblastic in shape and capable of self-renewal and have the potential for multi-directional differentiation. Nerve growth factor (NGF), a homodimeric polypeptide, plays an important role in the nervous system by supporting the survival and growth of neural cells, regulating cell growth, promoting differentiation into neuron, and neuron migration. Adenoviral vectors are DNA viruses that contain 36 kb of double-stranded DNA allowing for transmission of the genes to the host nucleus but not inserting them into the host chromosome. The present study aimed to investigate the induction efficiency and differentiation of neural cells from BMSCs by β-NGF gene transfection with recombinant adenoviral vector (Ad-β-NGF) in vitro. The results of immunochemical assay confirmed the induced cells as neuron cells. Moreover, flow cytometric analysis, Annexin-V-FITC/PI, and BrdU assay revealed that chemical inducer β-mercaptoethanol (β-met) triggered apoptosis of BMSCs, as evidenced by inhibition of DNA fragmentation, nuclear condensation, translocation of phospholipid phosphatidylserine, and activation of caspase-3. Furthermore, the results of western blotting showed that β-met suppressed AKT signaling pathway and regulated the MAPKs during differentiation of BMSCs. In contrast, Ad-β-NGF effectively induced the differentiation of BMSCs without causing any cytopathic phenomenon and apoptotic cell death. Moreover, Ad-β-NGF recovered the expression level of phosphorylated AKT and MAPKs in cells exposed to chemical reagents. Taken together, these results suggest that β-NGF gene transfection promotes the differentiation of BMSCs into neurons through regulation of AKT and MAPKs signaling pathways.
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Affiliation(s)
- Jun Yuan
- Department of Neurovascular Surgery, First Hospital Affiliated to Shantou University, 57# Changping Road, Jinping District, Shantou, 515041, China
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Wang Z, Yao W, Deng Q, Zhang X, Zhang J. Protective effects of BDNF overexpression bone marrow stromal cell transplantation in rat models of traumatic brain injury. J Mol Neurosci 2012; 49:409-16. [PMID: 23143881 DOI: 10.1007/s12031-012-9908-0] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2012] [Accepted: 10/16/2012] [Indexed: 10/27/2022]
Abstract
Bone marrow stromal cells (MSCs) were used as cell therapy for various diseases in recent years. Some reports showed that transplanted MSCs promote functional recovery in animal models of brain trauma. But other studies indicate that tissue replacement by this method may not be the main source of therapeutic benefit. Neurotrophic factors such as brain-derived neurotrophic factor (BDNF) therapeutic potential may contribute to the recovery of function after trauma. Our previous study showed that BDNF-MSCs could promote the survival of neurons in neuronal injured models in vitro. The present study was undertaken to explore the therapeutic effects of MSCs transfected with BDNF in vivo. After intraventricular injection of MSCs-BDNF, BDNF levels were increased significantly in cerebrospinal fluid by ELISA. Further studies showed that treatment of traumatic brain injury with MSCs-BDNF could attenuate neuronal injury as measurement of biological behavior assessment. These studies demonstrate that by increasing the brain concentration of BDNF, intraventricularly transplanted MSCs-BDNF might play an important role in the treatment of traumatic brain injury and might be an optional therapeutic strategy.
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Affiliation(s)
- Zhitao Wang
- Department of Neurosurgery, Tianjin Medical University General Hospital, Tianjin, 300052, People's Republic of China
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Zurita M, Otero L, Aguayo C, Bonilla C, Ferreira E, Parajón A, Vaquero J. Cell therapy for spinal cord repair: optimization of biologic scaffolds for survival and neural differentiation of human bone marrow stromal cells. Cytotherapy 2011; 12:522-37. [PMID: 20465485 DOI: 10.3109/14653241003615164] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
BACKGROUND AIMS The suppression of cell apoptosis using a biodegradable scaffold to replace the missing or altered extracellular matrix (ECM) could increase the survival of transplanted cells and thus increase the effectiveness of cell therapy. METHODS We studied the best conditions for the proliferation and differentiation of human bone marrow stromal cells (hBMSC) when cultured on different biologic scaffolds derived from fibrin and blood plasma, and analyzed the best concentrations of fibrinogen, thrombin and calcium chloride for favoring cell survival. The induction of neural differentiation of hBMSC was done by adding to these scaffolds different growth factors, such as nerve growth factor (NGF), brain-derived-neurotrophic factor (BDNF) and retinoic acid (RA), at concentrations of 100 ng/mL (NGF and BDNF) and 1 micro/mL (RA), over 7 days. RESULTS Although both types of scaffold allowed survival and neural differentiation of hBMSC, the results showed a clear superiority of platelet-rich plasma (PRP) scaffolds, mainly after BDNF administration, allowing most of the hBMSC to survive and differentiate into a neural phenotype. CONCLUSIONS Given that clinical trials for spinal cord injury using hBMSC are starting, these findings may have important clinical applications.
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Affiliation(s)
- Mercedes Zurita
- Neuroscience Research Unit of Surgical Research Service, Hospital Puerta de Hierro-Majadahonda, Madrid, Spain
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