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Li W, Ji R, Lin Y, Cheng X, Tang Z, He H, Zhang L, Qin J, Tian M, Jin G, Zhang X. miR-6216 Regulates Neural Stem Cell Proliferation by Targeting RAB6B. Neurosci Res 2023:S0168-0102(23)00073-1. [PMID: 37059126 DOI: 10.1016/j.neures.2023.04.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2023] [Revised: 03/16/2023] [Accepted: 04/11/2023] [Indexed: 04/16/2023]
Abstract
Neural stem cells (NSCs) are a class of self-renewing, multipotent and undifferentiated progenitor cells that retain the capacity to both glial and neuronal lineages. MicroRNAs (miRNAs) are small non-coding RNAs that play an important role in stem cell fate determination and self-renewal. Our previous RNA-seq data indicated that the expression of miR-6216 was decreased in denervated hippocampal exosomes compared with normal. However, whether miR-6216 participates in regulating NSC function remains to be elucidated. In this study, we demonstrated that miR-6216 negatively regulates RAB6B expression. Forced overexpression of miR-6216 inhibited NSC proliferation, and overexpression of RAB6B promoted NSC proliferation. These findings suggest that miR-6216 played an important role in regulating NSC proliferation via targeting RAB6B, and improve the understanding of the miRNA-mRNA regulatory network that affects NSC proliferation.
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Affiliation(s)
- Wen Li
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China
| | - Ruijie Ji
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China
| | - Yujian Lin
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China
| | - Xiang Cheng
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China
| | - Zixin Tang
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China
| | - Hui He
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China
| | - Lei Zhang
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China
| | - Jianbing Qin
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China
| | - Meiling Tian
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China
| | - Guohua Jin
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China
| | - Xinhua Zhang
- Department of Human Anatomy, Institute of Neurobiology, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Co-Innovation Center of Neuroregeneration, Nantong University, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, No.19 Qixiu Road, No.3 Building of Qixiu Campus, Nantong 226001, Jiangsu, PR China.
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Li W, Shan B, Cheng X, He H, Qin J, Zhao H, Tian M, Zhang X, Jin G. circRNA Acbd6 promotes neural stem cell differentiation into cholinergic neurons via the miR-320-5p-Osbpl2 axis. J Biol Chem 2022; 298:101828. [PMID: 35305988 PMCID: PMC9018392 DOI: 10.1016/j.jbc.2022.101828] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2021] [Revised: 03/05/2022] [Accepted: 03/07/2022] [Indexed: 11/29/2022] Open
Abstract
Neural stem cells (NSCs) persist in the dentate gyrus of the hippocampus into adulthood and are essential for both neurogenesis and neural circuit integration. Exosomes have also been shown to play vital roles in regulating biological processes of receptor cells as a medium for cell-to-cell communication signaling molecules. The precise molecular mechanisms of exosome-mediated signaling, however, remain largely unknown. Here, we found that exosomes produced by denervated hippocampi following fimbria–fornix transection could promote the differentiation of hippocampal neural precursor cells into cholinergic neurons in coculture with NSCs. Furthermore, we found that 14 circular RNAs (circRNAs) were upregulated in hippocampal exosomes after fimbria–fornix transection using high-throughput RNA-Seq technology. We further characterized the function and mechanism by which the upregulated circRNA Acbd6 (acyl-CoA-binding domain–containing 6) promoted the differentiation of NSCs into cholinergic neurons using RT–quantitative PCR, Western blot, ELISA, flow cytometry, immunohistochemistry, and immunofluorescence assay. By luciferase reporter assay, we demonstrated that circAcbd6 functioned as an endogenous miR-320-5p sponge to inhibit miR-320-5p activity, resulting in increased oxysterol-binding protein–related protein 2 expression with subsequent facilitation of NSC differentiation. Taken together, our results suggest that circAcbd6 promotes differentiation of NSCs into cholinergic neurons via miR-320-5p/oxysterol-binding protein–related protein 2 axis, which contribute important insights to our understanding of how circRNAs regulate neurogenesis.
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Affiliation(s)
- Wen Li
- Department of Human Anatomy, Institute of Neurobiology, Medical School of Nantong University, Nantong, Jiangsu, China; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Nantong University, Nantong, Jiangsu, China
| | - Boquan Shan
- Department of Human Anatomy, Institute of Neurobiology, Medical School of Nantong University, Nantong, Jiangsu, China; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Nantong University, Nantong, Jiangsu, China
| | - Xiang Cheng
- Department of Human Anatomy, Institute of Neurobiology, Medical School of Nantong University, Nantong, Jiangsu, China; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Nantong University, Nantong, Jiangsu, China
| | - Hui He
- Department of Human Anatomy, Institute of Neurobiology, Medical School of Nantong University, Nantong, Jiangsu, China; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Nantong University, Nantong, Jiangsu, China
| | - Jianbing Qin
- Department of Human Anatomy, Institute of Neurobiology, Medical School of Nantong University, Nantong, Jiangsu, China; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Nantong University, Nantong, Jiangsu, China
| | - Heyan Zhao
- Department of Human Anatomy, Institute of Neurobiology, Medical School of Nantong University, Nantong, Jiangsu, China; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Nantong University, Nantong, Jiangsu, China
| | - Meiling Tian
- Department of Human Anatomy, Institute of Neurobiology, Medical School of Nantong University, Nantong, Jiangsu, China; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Nantong University, Nantong, Jiangsu, China
| | - Xinhua Zhang
- Department of Human Anatomy, Institute of Neurobiology, Medical School of Nantong University, Nantong, Jiangsu, China; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Nantong University, Nantong, Jiangsu, China.
| | - Guohua Jin
- Department of Human Anatomy, Institute of Neurobiology, Medical School of Nantong University, Nantong, Jiangsu, China; Co-Innovation Center of Neuroregeneration, Nantong University, Nantong, Jiangsu, China; Key Laboratory of Neuroregeneration of Jiangsu Province and Ministry of Education, Nantong University, Nantong, Jiangsu, China.
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Zhao H, Jin T, Cheng X, Qin J, Zhang L, He H, Xue J, Jin G. GAS5 which is regulated by Lhx8 promotes the recovery of learning and memory in rats with cholinergic nerve injury. Life Sci 2020; 260:118388. [PMID: 32890602 DOI: 10.1016/j.lfs.2020.118388] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 08/03/2020] [Accepted: 08/30/2020] [Indexed: 01/24/2023]
Abstract
Damage to the cholinergic system in central nervous system injuries such as traumatic brain injury (TBI) and neurodegenerative diseases leads to impaired learning and cognition. Neural stem cells (NSCs) have self-renewal capacity and multi-directional differentiation potential and considered the best source of cells for cell replacement therapy. However, how to promote the differentiation of NSCs into neurons is a major challenge in current research. Lhx8 has a specific effect on the development of the cholinergic nervous system, but its exact function is unclear. In this study, we found that Lhx8 could regulate the expression of Growth arrest-specific (GAS)5 which has been implicated in cancer but was less studied in the nervous system. Additionally, results from PCR, fluorescence in situ hybridization, and immunocytochemical analyses showed that GAS5 is mainly expressed in the cytoplasm of hippocampal neural stems cells and promotes their differentiation into neurons; the Morris water maze test demonstrated that GAS5 overexpression restored learning and memory in rats with cholinergic injury. These findings indicate that GAS5, which is regulated by Lhx8, improve brain function following cholinergic nerve injury.
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Affiliation(s)
- Heyan Zhao
- Department of Human Anatomy, The Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Tianren Jin
- Department of Human Anatomy, The Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Xiang Cheng
- Department of Human Anatomy, The Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Jianbing Qin
- Department of Human Anatomy, The Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Lei Zhang
- Department of Human Anatomy, The Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Hui He
- Department of Human Anatomy, The Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Jianhua Xue
- Departments of Emergency Surgery, Affiliated Hospital of Nantong University, Nantong, Nantong, China
| | - Guohua Jin
- Department of Human Anatomy, The Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China.
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Zou L, Li H, Han X, Qin J, Song G. Runx1t1 promotes the neuronal differentiation in rat hippocampus. Stem Cell Res Ther 2020; 11:160. [PMID: 32321587 PMCID: PMC7178948 DOI: 10.1186/s13287-020-01667-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 03/20/2020] [Accepted: 03/31/2020] [Indexed: 12/17/2022] Open
Abstract
Background Runt-related transcription factor 1 translocated to 1 (Runx1t1) is one of the members of the myeloid translocation gene family. Our previous work showed that Runx1t1 induced the neuronal differentiation of radial glia cells in vitro. Methods To better uncover the role of Runx1t1 in hippocampal neurogenesis, in this study, we further explore its localization and function during the hippocampal neurogenesis. Results Our results showed that insufficient expression of Runx1t1 reduced the neuronal differentiation, and overexpression of Runx1t1 promoted the neuronal differentiation in vitro. We also found that Runx1t1 localized in neurons but not astrocytes both in vivo and in vitro. Furthermore, we found that Runx1t1 overexpression elevated the number of newborn neurons in the hippocampal dentate gyrus. Conclusions Taken together, our results further proved that Runx1t1 could be worked as a regulator in the process of hippocampal neurogenesis.
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Affiliation(s)
- Linqing Zou
- Department of Human Anatomy, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu, China.,Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA
| | - Haoming Li
- Department of Human Anatomy, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu, China.,Department of Neurochemistry, Inge Grundke-Iqbal Research Floor, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA
| | - Xiao Han
- Department of Human Anatomy, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu, China
| | - Jianbing Qin
- Department of Human Anatomy, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu, China
| | - Guoqi Song
- Department of Hematology, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China. .,Department of Medical Oncology, Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA, 19107, USA.
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5
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Cheng X, Li H, Zhao H, Li W, Qin J, Jin G. Function and mechanism of long non-coding RNA Gm21284 in the development of hippocampal cholinergic neurons. Cell Biosci 2019; 9:72. [PMID: 31485323 PMCID: PMC6716883 DOI: 10.1186/s13578-019-0336-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Accepted: 08/21/2019] [Indexed: 11/10/2022] Open
Abstract
Background Increasing evidence has revealed that long non-coding RNAs (lncRNAs) play a pivotal role in the development of nervous system. Our previous studies have demonstrated that enhanced cholinergic neurogenesis occurs in the subgranular zone (SGZ) of the hippocampal dentate gyrus (DG) after cholinergic denervation, which is closely associated with the core transcription factor Lhx8. This study aimed to identify novel lncRNAs in a denervated hippocampal niche, which may affect cholinergic neurogenesis, and to explore the molecular mechanisms underlying cholinergic neurogenesis. Methods The gene expression profiles of the denervated hippocampus were examined by microarray analysis, and targeted lncRNAs were filtered using bioinformatics analysis. The lncRNA Gm21284 was predicted to be associated with Lhx8. RT-PCR and FISH were used to observe the expression and localization of Gm21284 in vitro and in vivo. The interaction between Gm21284 and Lhx8 and miR-30e-3P was verified using the luciferase reporter gene assay. Cell proliferation and differentiation was observed to reveal the effects of Gm21284 in cholinergic neurogenesis. Results Microarray analysis demonstrated 482 up-regulated and 135 down-regulated mRNAs, 125 up-regulated and 55 down-regulated lncRNAs, and 10 up-regulated and 3 down-regulated miRNAs in the denervated hippocampal niche. Overall, 32 lncRNAs were differentially expressed in the denervated hippocampal niche, which could interact with miR-30e-3p, miR-431, and miR-147. Among these 32 lncRNAs, Gm21284 and Adarb1 were identified after interleaving with lncRNAs in a co-expression network and WGCNA. Gm21284 was mainly located in the hippocampal DG. Furthermore, Gm21284-positive cells were considerably increased in the denervated hippocampus than in the normal side. EdU proliferation assay revealed that the proliferation of neural stem cells was repressed after the overexpression of Gm21284. Compared with the control group, the proportion of ChAT-positive cells increased at 7 days of differentiation of NSCs overexpressing Gm21284. Conclusion Thus, Gm21284 functions as a competing endogenous RNA, which inhibits the proliferation of hippocampal NSCs and promotes their differentiation toward cholinergic neurons by inhibiting miR-30e-3P competitively.
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Affiliation(s)
- Xiang Cheng
- 1Department of Human Anatomy, Medical School of Nantong University, Nantong, China
| | - Haoming Li
- 1Department of Human Anatomy, Medical School of Nantong University, Nantong, China
| | - Heyan Zhao
- 1Department of Human Anatomy, Medical School of Nantong University, Nantong, China
| | - Wen Li
- 1Department of Human Anatomy, Medical School of Nantong University, Nantong, China
| | - Jianbing Qin
- 1Department of Human Anatomy, Medical School of Nantong University, Nantong, China
| | - Guohua Jin
- 1Department of Human Anatomy, Medical School of Nantong University, Nantong, China.,2Medical School of Nantong University, Building 3, No. 19 Qixiu Road, Congchuan District, Room 325, Nantong, 226001 China
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Večeřa J, Bártová E, Krejčí J, Legartová S, Komůrková D, Rudá-Kučerová J, Štark T, Dražanová E, Kašpárek T, Šulcová A, Dekker FJ, Szymanski W, Seiser C, Weitzer G, Mechoulam R, Micale V, Kozubek S. HDAC1 and HDAC3 underlie dynamic H3K9 acetylation during embryonic neurogenesis and in schizophrenia-like animals. J Cell Physiol 2018; 233:530-548. [PMID: 28300292 PMCID: PMC7615847 DOI: 10.1002/jcp.25914] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 03/14/2017] [Indexed: 12/21/2022]
Abstract
Although histone acetylation is one of the most widely studied epigenetic modifications, there is still a lack of information regarding how the acetylome is regulated during brain development and pathophysiological processes. We demonstrate that the embryonic brain (E15) is characterized by an increase in H3K9 acetylation as well as decreases in the levels of HDAC1 and HDAC3. Moreover, experimental induction of H3K9 hyperacetylation led to the overexpression of NCAM in the embryonic cortex and depletion of Sox2 in the subventricular ependyma, which mimicked the differentiation processes. Inducing differentiation in HDAC1-deficient mouse ESCs resulted in early H3K9 deacetylation, Sox2 downregulation, and enhanced astrogliogenesis, whereas neuro-differentiation was almost suppressed. Neuro-differentiation of (wt) ESCs was characterized by H3K9 hyperacetylation that was associated with HDAC1 and HDAC3 depletion. Conversely, the hippocampi of schizophrenia-like animals showed H3K9 deacetylation that was regulated by an increase in both HDAC1 and HDAC3. The hippocampi of schizophrenia-like brains that were treated with the cannabinoid receptor-1 inverse antagonist AM251 expressed H3K9ac at the level observed in normal brains. Together, the results indicate that co-regulation of H3K9ac by HDAC1 and HDAC3 is important to both embryonic brain development and neuro-differentiation as well as the pathophysiology of a schizophrenia-like phenotype.
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MESH Headings
- Acetylation
- Animals
- Antipsychotic Agents/pharmacology
- Brain/drug effects
- Brain/embryology
- Brain/enzymology
- Brain/pathology
- Cannabinoid Receptor Antagonists/pharmacology
- Disease Models, Animal
- Epigenesis, Genetic
- Gene Expression Regulation, Developmental
- Gestational Age
- Histone Deacetylase 1/antagonists & inhibitors
- Histone Deacetylase 1/genetics
- Histone Deacetylase 1/metabolism
- Histone Deacetylase Inhibitors/pharmacology
- Histone Deacetylases/genetics
- Histone Deacetylases/metabolism
- Histones/metabolism
- Methylazoxymethanol Acetate
- Mice, Inbred C57BL
- Neural Cell Adhesion Molecules/genetics
- Neural Cell Adhesion Molecules/metabolism
- Neurogenesis/drug effects
- Neurons/drug effects
- Neurons/enzymology
- Neurons/pathology
- Protein Processing, Post-Translational
- Rats, Sprague-Dawley
- Receptor, Cannabinoid, CB1/antagonists & inhibitors
- Receptor, Cannabinoid, CB1/metabolism
- SOXB1 Transcription Factors/genetics
- SOXB1 Transcription Factors/metabolism
- Schizophrenia/chemically induced
- Schizophrenia/drug therapy
- Schizophrenia/enzymology
- Schizophrenia/genetics
- Signal Transduction
- Time Factors
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Affiliation(s)
- Josef Večeřa
- Faculty of Science, Department of Experimental Biology, Masaryk University, Brno, Czech Republic
| | - Eva Bártová
- Institute of Biophysics of the Czech Academy of Sciences, v.v.i., Brno, Czech Republic
| | - Jana Krejčí
- Institute of Biophysics of the Czech Academy of Sciences, v.v.i., Brno, Czech Republic
| | - Soňa Legartová
- Institute of Biophysics of the Czech Academy of Sciences, v.v.i., Brno, Czech Republic
| | - Denisa Komůrková
- Institute of Biophysics of the Czech Academy of Sciences, v.v.i., Brno, Czech Republic
| | - Jana Rudá-Kučerová
- Faculty of Medicine, Department of Pharmacology, Masaryk University, Brno, Czech Republic
| | - Tibor Štark
- Faculty of Medicine, Department of Pharmacology, Masaryk University, Brno, Czech Republic
| | - Eva Dražanová
- Faculty of Medicine, Department of Pharmacology, Masaryk University, Brno, Czech Republic
- Institute of Scientific Instruments of the Czech Academy of Sciences, v.v.i., Brno, Czech Republic
| | - Tomáš Kašpárek
- Behavioral and Social Neuroscience Group, CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Alexandra Šulcová
- Behavioral and Social Neuroscience Group, CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
| | - Frank J. Dekker
- Chemical and Pharmaceutical Biology, University of Groningen, Groningen, The Netherlands
| | - Wiktor Szymanski
- Department of Radiology, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Christian Seiser
- Max F. Perutz Laboratories, Vienna Biocenter (VBC), Vienna, Austria
| | - Georg Weitzer
- Max F. Perutz Laboratories, Vienna Biocenter (VBC), Vienna, Austria
| | - Raphael Mechoulam
- Faculty of Medicine, Institute for Drug Research, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Vincenzo Micale
- Behavioral and Social Neuroscience Group, CEITEC—Central European Institute of Technology, Masaryk University, Brno, Czech Republic
- Department of Biomedical and Biotechnological Sciences, Section of Pharmacology, School of Medicine, University of Catania, Catania, Italy
| | - Stanislav Kozubek
- Faculty of Science, Department of Experimental Biology, Masaryk University, Brno, Czech Republic
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Deng B, Cheng X, Li H, Qin J, Tian M, Jin G. Microarray expression profiling in the denervated hippocampus identifies long noncoding RNAs functionally involved in neurogenesis. BMC Mol Biol 2017; 18:15. [PMID: 28587591 PMCID: PMC5461768 DOI: 10.1186/s12867-017-0091-2] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Accepted: 05/05/2017] [Indexed: 02/03/2023] Open
Abstract
BACKGROUND The denervated hippocampus provides a proper microenvironment for the survival and neuronal differentiation of neural progenitors. While thousands of lncRNAs were identified, only a few lncRNAs that regulate neurogenesis in the hippocampus are reported. The present study aimed to perform microarray expression profiling to identify long noncoding RNAs (lncRNAs) that might participate in the hippocampal neurogenesis, and investigate the potential roles of identified lncRNAs in the hippocampal neurogenesis. RESULTS In this study, the profiling suggested that 74 activated and 29 repressed (|log fold-change|>1.5) lncRNAs were differentially expressed between the denervated and the normal hippocampi. Furthermore, differentially expressed lncRNAs associated with neurogenesis were found. According to the tissue-specific expression profiles, and a novel lncRNA (lncRNA2393) was identified as a neural regulator in the hippocampus in this study. The expression of lncRNA2393 was activated in the denervated hippocampus. FISH showed lncRNA2393 specially existed in the subgranular zone of the dentate gyrus in the hippocampus and in the cytoplasm of neural stem cells (NSCs). The knockdown of lncRNA2393 depletes the EdU-positive NSCs. Besides, the increased expression of lncRNA2393 was found to be triggered by the change in the microenvironment. CONCLUSION We concluded that expression changes of lncRNAs exists in the microenvironment of denervated hippocampus, of which promotes hippocampal neurogenesis. The identified lncRNA lncRNA2393 expressed in neural stem cells, located in the subgranular zone of the dentate gyrus, which can promote NSCs proliferation in vitro. Therefore, the question is exactly which part of the denervated hippocampus induced the expression of lncRNA2393. Further studies should aim to explore the exact molecular mechanism behind the expression of lncRNA2393 in the hippocampus, to lay the foundation for the clinical application of NSCs in treating diseases of the central nervous system.
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Affiliation(s)
- Bingying Deng
- Department of Anatomy and Neurobiology, The Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Xiang Cheng
- Department of Anatomy and Neurobiology, The Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Haoming Li
- Department of Anatomy and Neurobiology, The Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Jianbing Qin
- Department of Anatomy and Neurobiology, The Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Meiling Tian
- Department of Anatomy and Neurobiology, The Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China
| | - Guohua Jin
- Department of Anatomy and Neurobiology, The Jiangsu Key Laboratory of Neuroregeneration, Co-innovation Center of Neuroregeneration, Nantong University, Nantong, 226001, Jiangsu, People's Republic of China. .,Medical School of Nantong University, Building 3, No. 19 Qixiu Road, Congchuan District, Room 325, Nantong, 226001, China.
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Park SE, Lee J, Chang EH, Kim JH, Sung JH, Na DL, Chang JW. Activin A secreted by human mesenchymal stem cells induces neuronal development and neurite outgrowth in an in vitro model of Alzheimer’s disease: neurogenesis induced by MSCs via activin A. Arch Pharm Res 2016; 39:1171-9. [DOI: 10.1007/s12272-016-0799-4] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 07/19/2016] [Indexed: 01/17/2023]
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Zhang L, Han X, Cheng X, Tan XF, Zhao HY, Zhang XH. Denervated hippocampus provides a favorable microenvironment for neuronal differentiation of endogenous neural stem cells. Neural Regen Res 2016; 11:597-603. [PMID: 27212920 PMCID: PMC4870916 DOI: 10.4103/1673-5374.180744] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
Abstract
Fimbria-fornix transection induces both exogenous and endogenous neural stem cells to differentiate into neurons in the hippocampus. This indicates that the denervated hippocampus provides an environment for neuronal differentiation of neural stem cells. However, the pathways and mechanisms in this process are still unclear. Seven days after fimbria fornix transection, our reverse transcription polymerase chain reaction, western blot assay, and enzyme linked immunosorbent assay results show a significant increase in ciliary neurotrophic factor mRNA and protein expression in the denervated hippocampus. Moreover, neural stem cells derived from hippocampi of fetal (embryonic day 17) Sprague-Dawley rats were treated with ciliary neurotrophic factor for 7 days, with an increased number of microtubule associated protein-2-positive cells and decreased number of glial fibrillary acidic protein-positive cells detected. Our results show that ciliary neurotrophic factor expression is up-regulated in the denervated hippocampus, which may promote neuronal differentiation of neural stem cells in the denervated hippocampus.
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Affiliation(s)
- Lei Zhang
- Department of Human Anatomy, Institute of Neurobiology, Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Xiao Han
- Department of Human Anatomy, Institute of Neurobiology, Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Xiang Cheng
- Department of Human Anatomy, Institute of Neurobiology, Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Xue-Feng Tan
- Department of Human Anatomy, Institute of Neurobiology, Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - He-Yan Zhao
- Department of Human Anatomy, Institute of Neurobiology, Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
| | - Xin-Hua Zhang
- Department of Human Anatomy, Institute of Neurobiology, Jiangsu Key Laboratory of Neuroregeneration, Medical School, Nantong University, Nantong, Jiangsu Province, China
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Proliferation and Glia-Directed Differentiation of Neural Stem Cells in the Subventricular Zone of the Lateral Ventricle and the Migratory Pathway to the Lesions after Cortical Devascularization of Adult Rats. BIOMED RESEARCH INTERNATIONAL 2016; 2016:3625959. [PMID: 27294116 PMCID: PMC4879261 DOI: 10.1155/2016/3625959] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/30/2015] [Revised: 04/02/2016] [Accepted: 04/14/2016] [Indexed: 12/25/2022]
Abstract
We investigated the effects of cortical devascularization on the proliferation, differentiation, and migration of neural stem cells (NSCs) in the subventricular zone (SVZ) of the lateral ventricle of adult rats. 60 adult male Wistar rats were randomly divided into control group and devascularized group. At 15 and 30 days after cerebral cortices were devascularized, rats were euthanized and immunohistochemical analysis was performed. The number of PCNA-, Vimentin-, and GFAP-positive cells in the bilateral SVZ of the lateral wall and the superior wall of the lateral ventricles of 15- and 30-day devascularized groups increased significantly compared with the control group (P < 0.05 and P < 0.01). The area density of PCNA-, Vimentin-, and GFAP-positive cells in cortical lesions of 15- and 30-day devascularized groups increased significantly compared with the control group (P < 0.05 and P < 0.01). PCNA-, GFAP-, and Vimentin-positive cells in the SVZ migrated through the rostral migratory stream (RMS), and PCNA-, GFAP-, and Vimentin-positive cells from both the ipsilateral and contralateral dorsolateral SVZ (dl-SVZ) migrated into the corpus callosum (CC) and accumulated, forming a migratory pathway within the CC to the lesioned site. Our study suggested that cortical devascularization induced proliferation, glia-directed differentiation, and migration of NSCs from the SVZ through the RMS or directly to the corpus callosum and finally migrating radially to cortical lesions. This may play a significant role in neural repair.
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Lu D, Xu A, Mai H, Zhao J, Zhang C, Qi R, Wang H, Lu D, Zhu L. The synergistic effects of heat shock protein 70 and ginsenoside Rg1 against tert-butyl hydroperoxide damage model in vitro. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2015; 2015:437127. [PMID: 25685255 PMCID: PMC4312651 DOI: 10.1155/2015/437127] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2014] [Accepted: 12/13/2014] [Indexed: 02/08/2023]
Abstract
Neural stem cells (NSCs) transplanted is one of the hottest research to treat Alzheimer's disease (AD), but cholinergic neurons from stem cells were also susceptible to cell death which Heat shock protein 70 (HSP70) was affirmed to reverse. Related to cognitive impairment, cholinergic nervous cells should be investigated and ginsenoside Rg1 (G-Rg1) was considered to increase them. We chose tert-butyl hydroperoxide (t-BHP) damage model to study in vitro. Functional properties of our recombination plasmid pEGFP-C2-HSP70 were affirmed by SH-SY5Y cells. To opposite the transitory appearance of HSP70, NSCs used as the vectors of HSP70 gene overexpressed HSP70 for at least 7 days in vitro. After transfection for 3 days, G-Rg1 pretreatment for 4 hours, and coculture for 3 days, the expression of acetylcholinesterase (ChAT), synaptophysin, and the ratio of NeuN and GFAP were assessed by western blot; Morphological properties were detected by 3D reconstruction and immunofluorescence. ChAT was markedly improved in the groups contained G-Rg1. In coculture system, the ratio of neurons/astrocytes and the filaments of neurons were increased; apoptosis cells were decreased, compared to monotherapy (P < 0.05). In conclusion, we demonstrated that, as a safe cotreatment affirmed in vitro, overexpression of HSP70 in NSCs plus G-Rg1 promoted nervous cells regeneration from chronic oxidative damage.
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Affiliation(s)
- Dan Lu
- 1Department of Pathophysiology, Institute of Brain Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
- 2Department of Internal Neurology, Guangzhou Overseas Chinese Hospital, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Anding Xu
- 2Department of Internal Neurology, Guangzhou Overseas Chinese Hospital, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Hongcheng Mai
- 2Department of Internal Neurology, Guangzhou Overseas Chinese Hospital, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510632, China
| | - Jiayi Zhao
- 1Department of Pathophysiology, Institute of Brain Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Chanjuan Zhang
- 1Department of Pathophysiology, Institute of Brain Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Renbin Qi
- 1Department of Pathophysiology, Institute of Brain Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Huadong Wang
- 1Department of Pathophysiology, Institute of Brain Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
| | - Daxiang Lu
- 1Department of Pathophysiology, Institute of Brain Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
- *Daxiang Lu: and
| | - Lihong Zhu
- 1Department of Pathophysiology, Institute of Brain Research, Key Laboratory of State Administration of Traditional Chinese Medicine of the People's Republic of China, School of Medicine, Jinan University, Guangzhou, Guangdong 510632, China
- *Lihong Zhu:
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Zhang X, Zhang L, Cheng X, Guo Y, Sun X, Chen G, Li H, Li P, Lu X, Tian M, Qin J, Zhou H, Jin G. IGF-1 promotes Brn-4 expression and neuronal differentiation of neural stem cells via the PI3K/Akt pathway. PLoS One 2014; 9:e113801. [PMID: 25474202 PMCID: PMC4256305 DOI: 10.1371/journal.pone.0113801] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2014] [Accepted: 10/30/2014] [Indexed: 12/16/2022] Open
Abstract
Our previous studies indicated that transcription factor Brn-4 is upregulated in the surgically denervated hippocampus in vivo, promoting neuronal differentiation of hippocampal neural stem cells (NSCs) in vitro. The molecules mediating Brn-4 upregulation in the denervated hippocampus remain unknown. In this study we examined the levels of insulin-like growth factor-1 (IGF-1) in hippocampus following denervation. Surgical denervation led to a significant increase in IGF-1 expression in vivo. We also report that IGF-1 treatment on NSCs in vitro led to a marked acceleration of Brn-4 expression and cell differentiation down neuronal pathways. The promotion effects were blocked by PI3K-specific inhibitor (LY294002), but not MAPK inhibitor (PD98059); levels of phospho-Akt were increased by IGF-1 treatment. In addition, inhibition of IGF-1 receptor (AG1024) and mTOR (rapamycin) both attenuated the increased expression of Brn-4 induced by IGF-1. Together, the results demonstrated that upregulation of IGF-1 induced by hippocampal denervation injury leads to activation of the PI3K/Akt signaling pathway, which in turn gives rise to upregulation of the Brn-4 and subsequent stem cell differentiation down neuronal pathways.
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Affiliation(s)
- Xinhua Zhang
- Department of Anatomy, Nantong University, Nantong, Jiangsu, China
| | - Lei Zhang
- Department of Anatomy, Nantong University, Nantong, Jiangsu, China
| | - Xiang Cheng
- Department of Anatomy, Nantong University, Nantong, Jiangsu, China
| | - Yuxiu Guo
- Department of Pediatrics, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Xiaohui Sun
- Vasculocardiology Department, Nantong Rehibilitation Hosptital Agings, Nantong, Jiangsu, China
| | - Geng Chen
- Department of Anatomy, Nantong University, Nantong, Jiangsu, China
| | - Haoming Li
- Department of Anatomy, Nantong University, Nantong, Jiangsu, China
| | - Pengcheng Li
- Department of Pediatrics, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Xiaohui Lu
- Department of Stomatology, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
| | - Meiling Tian
- Department of Anatomy, Nantong University, Nantong, Jiangsu, China
| | - Jianbing Qin
- Department of Anatomy, Nantong University, Nantong, Jiangsu, China
| | - Hui Zhou
- Department of Pediatrics, Affiliated Hospital of Nantong University, Nantong, Jiangsu, China
- * E-mail: (GJ); (HZ)
| | - Guohua Jin
- Department of Anatomy, Nantong University, Nantong, Jiangsu, China
- * E-mail: (GJ); (HZ)
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Linqing Z, Guohua J, Haoming L, Xuelei T, Jianbing Q, Meiling T. Runx1t1 regulates the neuronal differentiation of radial glial cells from the rat hippocampus. Stem Cells Transl Med 2014; 4:110-6. [PMID: 25473084 DOI: 10.5966/sctm.2014-0158] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
The brain has the highest Runx1t1 level relative to the levels in other organs. Runx1t1 might have a regulatory function as a transcriptional corepressor in the differentiation/development of the nervous system. Neurogenesis requires factors that regulate the proliferation of progenitors and activate the neuronal differentiation process. However, the precise role of Runx1t1 in hippocampal neurogenesis is unclear. We knocked down Runx1t1 in hippocampal radial glial cells (RGCs) with Runx1t1-RNA interference using lentiviral vectors. We also used LV-Runx1t1 to induce Runx1t1 overexpression in vitro. We have provided experimental evidence that decreased Runx1t1 expression reduced the neuronal differentiation of RGCs, and increased Runx1t1 expression caused a greater number of RGCs to differentiate into neurons. We have concluded that Runx1t1 could be involved in the process through which RGCs differentiate into neurons.
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Affiliation(s)
- Zou Linqing
- Department of Human Anatomy, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu, People's Republic of China; Department of Human Anatomy and Histoembryology, Medical College of Soochow University, Suzhou, People's Republic of China
| | - Jin Guohua
- Department of Human Anatomy, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu, People's Republic of China; Department of Human Anatomy and Histoembryology, Medical College of Soochow University, Suzhou, People's Republic of China
| | - Li Haoming
- Department of Human Anatomy, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu, People's Republic of China; Department of Human Anatomy and Histoembryology, Medical College of Soochow University, Suzhou, People's Republic of China
| | - Tao Xuelei
- Department of Human Anatomy, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu, People's Republic of China; Department of Human Anatomy and Histoembryology, Medical College of Soochow University, Suzhou, People's Republic of China
| | - Qin Jianbing
- Department of Human Anatomy, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu, People's Republic of China; Department of Human Anatomy and Histoembryology, Medical College of Soochow University, Suzhou, People's Republic of China
| | - Tian Meiling
- Department of Human Anatomy, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong, Jiangsu, People's Republic of China; Department of Human Anatomy and Histoembryology, Medical College of Soochow University, Suzhou, People's Republic of China
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Koutseff A, Mittelhaeuser C, Essabri K, Auwerx J, Meziane H. Impact of the apolipoprotein E polymorphism, age and sex on neurogenesis in mice: Pathophysiological relevance for Alzheimer's disease? Brain Res 2014; 1542:32-40. [DOI: 10.1016/j.brainres.2013.10.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2012] [Revised: 09/26/2013] [Accepted: 10/03/2013] [Indexed: 01/18/2023]
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15
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Zou L, Li H, Jin G, Tian M, Qin J, Zhao H. Fimbria-fornix (FF)-transected hippocampal extracts induce the activation of astrocytes in vitro. In Vitro Cell Dev Biol Anim 2013; 50:174-82. [PMID: 24203634 DOI: 10.1007/s11626-013-9709-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Accepted: 10/17/2013] [Indexed: 10/26/2022]
Abstract
Hippocampus is one of the neurogenesis areas in adult mammals, but the function of astrocytes in this area is still less known. In our previous study, the fimbria-fornix (FF)-transected hippocampal extracts promoted the proliferation and neuronal differentiation of radial glial cells in vitro. To explore the effects of hippocampal extracts on gliogenesis, the hippocampal astrocytes were treated by normal or ff-transected hippocampal extracts in vitro. The cells were immunostained by brain lipid-binding protein (BLBP), nestin, and SOX2 to assess their state of activation. The effects of astrocyte-conditioned medium on the neuronal differentiation of hippocampal neural stem cells (NSCs) were also investigated. After treatment of FF-transected hippocampal extracts, the number of BLBP, nestin, and Sox-positive cells were obviously more than the cells which treated by normal hippocampal extracts, these cells maintained a state of activation and the activated astrocyte-conditioned medium also promoted the differentiation of NSCs into more neurons. These findings suggest that the astrocytes can be activated by FF-transected hippocampal extracts and these activated cells also can promote the neuronal differentiation of hippocampal NSCs in vitro.
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Affiliation(s)
- Linqing Zou
- Department of Human Anatomy and Histoembryology, Medical College of Soochow University, Suzhou, 215123, China
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16
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Chen BH, Yan BC, Park JH, Ahn JH, Lee DH, Kim IH, Cho JH, Lee JC, Kim SK, Lee B, Cho JH, Won MH, Lee YL. Aripiprazole, an atypical antipsychotic drug, improves maturation and complexity of neuroblast dendrites in the mouse dentate gyrus via increasing superoxide dismutases. Neurochem Res 2013; 38:1980-8. [PMID: 23836293 DOI: 10.1007/s11064-013-1104-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2013] [Revised: 06/27/2013] [Accepted: 06/28/2013] [Indexed: 01/02/2023]
Abstract
Apripiprazole (APZ) is well known as an atypical antipsychotic and antidepressant. In the present study, we investigated effects of APZ on cell proliferation and neuronal differentiation in the dentate gyrus (DG) of the adolescent mouse using BruU, Ki-67 and doublecortin (DCX) immunohistochemistry. BruU, Ki-67 and DCX-positive (+) cells were easily detected in the subgranular zone of the DG in the vehicle- and APZ-treated group. We found that in the 8 mg/kg APZ-treated group numbers of Ki-67(+), DCX(+) and BrdU(+)/DCX(+) cells were significantly increased compared with those in the vehicle-treated group. We also found that maturation and complexity of DCX(+) dendrites in the 8 mg/kg APZ-treated group was well improved compared with those in the vehicle-treated group. In addition, markedly decreased lipid peroxidation and increased superoxide dismutase 2 (SOD2) level were observed in the DG of the 8 mg/kg APZ-treated group. Our present findings indicate that APZ can enhance cell proliferation and neuroblast differentiation, particularly maturation and complexity of neuroblast dendrites, in the DG via decreasing lipid peroxidation and increasing SOD2 level.
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Affiliation(s)
- Bai Hui Chen
- Department of Physiology, Institute of Neurodegeneration and Neuroregeneration, College of Medicine, Hallym University, Chuncheon, 200-702, South Korea
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17
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In vitro differentiation of human umbilical cord mesenchymal stem cells (hUCMSCs), derived from Wharton's jelly, into choline acetyltransferase (ChAT)‐positive cells. Int J Dev Neurosci 2012; 30:471-7. [DOI: 10.1016/j.ijdevneu.2012.05.006] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2012] [Revised: 05/25/2012] [Accepted: 05/25/2012] [Indexed: 12/11/2022] Open
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18
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Dong C, Zhao H, Chen W, Wang L, Zhang L, Zhang X, Shi J, Li H, Jin G. The dynamic expression of Mash1 in the hippocampal subgranular zone after fimbria-fornix transection. Neurosci Lett 2012; 520:26-31. [DOI: 10.1016/j.neulet.2012.05.016] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2012] [Revised: 05/02/2012] [Accepted: 05/03/2012] [Indexed: 02/04/2023]
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19
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Yan BC, Yoo KY, Park JH, Lee CH, Choi JH, Won MH. The high dosage of earthworm (Eisenia andrei) extract decreases cell proliferation and neuroblast differentiation in the mouse hippocampal dentate gyrus. Anat Cell Biol 2011; 44:218-25. [PMID: 22025974 PMCID: PMC3195826 DOI: 10.5115/acb.2011.44.3.218] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 07/23/2011] [Accepted: 07/29/2011] [Indexed: 11/30/2022] Open
Abstract
Earthworm extract has shown anticancer characteristics. In the present study, we examined the effect of chronic treatment with a high dose of earthworm (Eisenia andrei) extract (EE) on cell proliferation and neuroblast differentiation in the hippocampal dentate gyrus (DG) of 3-week-old mice using 5-bromo-2'-deoxyuridine (BrdU) and Ki-67 immunohistochemistry for cell proliferation and doublecortin (DCX) immunohistochemistry for neuroblast differentiation, respectively. BrdU-, Ki-67-, and DCX-immunoreactive cells were easily detected in the subgranular zone of the DG in vehicle (saline)-treated mice. However, BrdU-, Ki-67-, and DCX-immunoreactive cells in the 500 mg/kg EE-treated mice decreased distinctively compared to those in the vehicle-treated mice. In addition, brain-derived neurotrophic factor (BDNF) immunoreactivity and its protein level decreased markedly in the DG of the EE-treated group compared to those in the vehicle-treated group. These results indicate that chronic treatment with high dose EE decreased cell proliferation and neuroblast differentiation, and that BDNF immunoreactivity decreased in the DG of EE-treated mice.
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Affiliation(s)
- Bing Chun Yan
- Department of Neurobiology, Kangwon National University School of Medicine, Chuncheon, Korea
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Zhang X, Jin G, Li W, Zou L, Shi J, Qin J, Tian M, Li H. Ectopic neurogenesis in the forebrain cholinergic system-related areas of a rat dementia model. Stem Cells Dev 2011; 20:1627-38. [PMID: 21142974 DOI: 10.1089/scd.2010.0285] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Lesions to the fimbria fornix (FiFx) plus cingulate bundle (CB), the principal routes of communication of forebrain cholinergic regions, produce lasting impairment of spatial learning and memory in mice. We report that extensive neurogenesis takes place in the FiFx, CB, and basalis magnocellularis following FiFx plus CB transection. Immunofluorescence revealed that nestin-expressing cells were present in all 3 areas following lesion; the majority of nestin-positive cells were also positive for 5-bromo-2-deoxy-uridine, a marker of DNA synthesis. Nestin-positive proliferative cells were almost entirely absent from unlesioned tissue. Neurospheres cultured in vitro from lesioned FiFx displayed the characteristics of neural stem cells--proliferation, expression of embryonic markers, and multipotential differentiation into neurons, astrocytes, and oligodendrocytes. At early stages after transection, a small number of immature and migrating doublecortin-immunopositive neurons were detected in lesioned FiFx, where neuronal cell bodies are normally absent. At later stages, postlesion immature neurons developed into β-tubulin III-positive mature neurons. Lentivirus labeling assay implied that the injury-induced neurogenesis in FiFx may be from local neurogenic astrocytes but not from dentate gyrus. These results demonstrate that insult to cholinergic tracts can stimulate neural stem cell proliferation and neuronal regeneration not only in innervated regions but also in the projection pathways themselves. Ectopic neurogenesis in cholinergic system-related areas provides an additional mechanism for repair of cholinergic innervation following damage.
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Affiliation(s)
- Xinhua Zhang
- Department of Anatomy and Neurobiology, Jiangsu Key Laboratory of Neuroregeneration, Nantong University, Nantong City, Jiangsu, China
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