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Wang Q, Gao S, Luo Y, Kang QY. Compound anisodine affects the proliferation and calcium overload of hypoxia-induced rat retinal progenitor cells and brain neural stem cells via the p-ERK1/2/HIF-1α/VEGF pathway. Exp Ther Med 2017; 14:600-608. [PMID: 28672973 PMCID: PMC5488403 DOI: 10.3892/etm.2017.4528] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2016] [Accepted: 01/06/2017] [Indexed: 12/26/2022] Open
Abstract
As a Traditional Chinese Medicine, compound anisodine (CA) has previously been shown to regulate the vegetative nervous system, improve microcirculation and scavenge reactive oxygen species, and has been commonly utilized as a neuroprotective agent to treat ischemic optic neuropathy and choroidoretinopathy. The present study aimed to investigate the neuroprotective effects of CA on the proliferation and calcium overload of hypoxia-induced rat retinal progenitor cells (RPCs) and brain neural stem cells (BNSCs) harvested from neonatal Sprague-Dawley rats. Cells were treated with CA at 0.126, 0.252, 0.505 or 1.010 g/l for four hours prior to or after hypoxia (<1% oxygen) for four h, followed by re-oxygenation for four hours; a normal control group and a CA-untreated hypoxia model group were also included. An MTT assay demonstrated that the cell viability was markedly improved following treatment with 0.126–1.010 g/l CA, compared with that in the hypoxia model group (P<0.05). Bromodeoxyuridine (BrdU) immunocytochemical staining and flow cytometry indicated that after culture in hypoxia for 4 h, the number of BrdU+ RPCs and BNSCs was significant decreased, as well as the cell population in S+G2 phase of the cell cycle, which was significantly attenuated by treatment with 1.010 g/l CA for 4 h prior to hypoxia (P<0.05). Furthermore, laser scanning confocal microscopy showed that the intracellular calcium concentration in hypoxia-cultured RPCs and BNSCs was markedly increased, which was attenuated by 0.126–1.010 g/l CA in a concentration-dependent manner (P<0.05). Furthermore, western blot analysis demonstrated that after hypoxia, the protein levels of hypoxia-inducible factor (HIF)-1α and vascular endothelial growth factor (VEGF) were upregulated in RPCs and BNSCs, whereas phosphorylated extracellular signal-regulated kinase (phospho-ERK 1/2Thr202/Tyr204) and Cyclin D1 were downregulated; of note, treatment with 1.010 g/l CA significantly attenuated these changes (P<0.05). The results of the present study suggested that CA may improve the proliferation and inhibit calcium overload in hypoxia-induced RPCs and BNSCs by altering the protein levels of Cyclin D1 as well as signaling through the p-ERK1/2/HIF-1α/VEGF pathway.
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Affiliation(s)
- Qun Wang
- Department of Ophthalmology, The First Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Shan Gao
- Department of Ophthalmology, The First Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yu Luo
- Environment and Genes Related to Diseases Key Laboratory of Education Ministry, College of Medicine, Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Qian-Yan Kang
- Department of Ophthalmology, The First Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
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Deng S, Hou G, Xue Z, Zhang L, Zhou Y, Liu C, Liu Y, Li Z. Vitamin E isomer δ-tocopherol enhances the efficiency of neural stem cell differentiation via L-type calcium channel. Neurosci Lett 2015; 585:166-70. [DOI: 10.1016/j.neulet.2014.11.031] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2014] [Revised: 11/14/2014] [Accepted: 11/19/2014] [Indexed: 01/03/2023]
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Liu S, Li Z, Fu J, Sun L, Xu F, Harada T, Lou Y, Chu M, Sun Q, Xu K, Zhang R, Jin L, Xiao H, Wu S. The effects of harvesting media on biological characteristics and repair potential of neural stem cells after traumatic brain injury. PLoS One 2014; 9:e107865. [PMID: 25247595 PMCID: PMC4172630 DOI: 10.1371/journal.pone.0107865] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2014] [Accepted: 08/18/2014] [Indexed: 11/18/2022] Open
Abstract
Various solutions are utilized widely for the isolation, harvesting, sorting, testing and transplantation of neural stem cells (NSCs), whereas the effects of harvesting media on the biological characteristics and repair potential of NSCs remain unclear. To examine some of these effects, NSCs were isolated from cortex of E14.5 mice and exposed to the conventional harvesting media [0.9% saline (Saline), phosphate-buffered saline (PBS) or artificial cerebrospinal fluid (ACSF)] or the proliferation culture medium (PCM) for different durations at 4°C. Treated NSCs were grafted by in situ injection into the lesion sites of traumatic brain injury (TBI) mice. In vitro, harvesting media-exposed NSCs displayed time-dependent reduction of viability and proliferation. S phase entry decreased in harvesting media-exposed cells, which was associated with upregulation of p53 protein and downregulation of cyclin E1 protein. Moreover, harvesting media exposure induced the necrosis and apoptosis of NSCs. The levels of Fas-L, cleaved caspase 3 and 8 were increased, which suggests that the death receptor signaling pathway is involved in the apoptosis of NSCs. In addition, exposure to Saline did not facilitate the neuronal differentiation of NSCs, suggesting that Saline exposure may be disadvantageous for neurogenesis. In vivo, NSC-mediated functional recovery in harvesting media-exposed NSC groups was notably attenuated in comparison with the PCM-exposed NSC group. In conclusion, harvesting media exposure modulates the biological characteristics and repair potential of NSCs after TBI. Our results suggest that insight of the effects of harvesting media exposure on NSCs is critical for developing strategies to assure the successful long-term engraftment of NSCs.
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Affiliation(s)
- Shengliang Liu
- Department of Anatomy, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Zhuying Li
- The First Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang Province, China
| | - Jin Fu
- The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Liang Sun
- Department of Anatomy, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Fengyan Xu
- Department of Anatomy, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang Province, China
| | | | - Yu Lou
- The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Ming Chu
- The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Qi Sun
- Department of Anatomy, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Kun Xu
- The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
| | - Rui Zhang
- The Second Affiliated Hospital of Heilongjiang University of Chinese Medicine, Harbin, Heilongjiang Province, China
| | - Lianhong Jin
- Department of Anatomy, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang Province, China
- * E-mail: (SW); (LJ); (HX)
| | - Hui Xiao
- The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, China
- * E-mail: (SW); (LJ); (HX)
| | - Shuliang Wu
- Department of Anatomy, School of Basic Medical Sciences, Harbin Medical University, Harbin, Heilongjiang Province, China
- * E-mail: (SW); (LJ); (HX)
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Albè E, Chang JH, Azar NF, Ivanov AR, Azar DT. Proteomic analysis of the hyaloid vascular system regression during ocular development. J Proteome Res 2008; 7:4904-13. [PMID: 18841878 DOI: 10.1021/pr800551m] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
We describe a proteomic approach to investigate the differential protein expression patterns and identify the physiologically relevant angiogenic and antiangiogenic factors involved in the hyaloid vascular system regression. Differentially expressed proteins were identified using two-dimensional gel electrophoresis followed by nanoflow chromatography coupled with tandem mass spectrometry. These proteins are expected to provide insight as to their function in the early maintenance and eventual regression of the hyaloid vascular system.
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Affiliation(s)
- Elena Albè
- Department of Ophthalmology and Visual Sciences, University of Illinois at Chicago, Chicago, Illinois 60612, USA
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