1
|
Liu M, Fan Y, Ni N, Yu T, Mao Z, Huang H, Zhang J, Tang Y, He H, Meng F, You Y, Zhou Q. TERT mediates the U-shape of glucocorticoids effects in modulation of hippocampal neural stem cells and associated brain function. CNS Neurosci Ther 2024; 30:e14577. [PMID: 38421107 PMCID: PMC10850922 DOI: 10.1111/cns.14577] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 10/17/2023] [Accepted: 12/07/2023] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND Glucocorticoids (GCs) are steroidal hormones produced by the adrenal cortex. A physiological-level GCs have a crucial function in maintaining many cognitive processes, like cognition, memory, and mood, however, both insufficient and excessive GCs impair these functions. Although this phenomenon could be explained by the U-shape of GC effects, the underlying mechanisms are still not clear. Therefore, understanding the underlying mechanisms of GCs may provide insight into the treatments for cognitive and mood-related disorders. METHODS Consecutive administration of corticosterone (CORT, 10 mg/kg, i.g.) proceeded for 28 days to mimic excessive GCs condition. Adrenalectomy (ADX) surgery was performed to ablate endogenous GCs in mice. Microinjection of 1 μL of Ad-mTERT-GFP virus into mouse hippocampus dentate gyrus (DG) and behavioral alterations in mice were observed 4 weeks later. RESULTS Different concentrations of GCs were shown to affect the cell growth and development of neural stem cells (NSCs) in a U-shaped manner. The physiological level of GCs (0.01 μM) promoted NSC proliferation in vitro, while the stress level of GCs (10 μM) inhibited it. The glucocorticoid synthesis blocker metyrapone (100 mg/kg, i.p.) and ADX surgery both decreased the quantity and morphological development of doublecortin (DCX)-positive immature cells in the DG. The physiological level of GCs activated mineralocorticoid receptor and then promoted the production of telomerase reverse transcriptase (TERT); in contrast, the stress level of GCs activated glucocorticoid receptor and then reduced the expression of TERT. Overexpression of TERT by AD-mTERT-GFP reversed both chronic stresses- and ADX-induced deficiency of TERT and the proliferation and development of NSCs, chronic stresses-associated depressive symptoms, and ADX-associated learning and memory impairment. CONCLUSION The bidirectional regulation of TERT by different GCs concentrations is a key mechanism mediating the U-shape of GC effects in modulation of hippocampal NSCs and associated brain function. Replenishment of TERT could be a common treatment strategy for GC dysfunction-associated diseases.
Collapse
Affiliation(s)
- Meng‐Ying Liu
- Department of Pharmacy, Nanjing Drum Tower HospitalAffiliated Hospital of Medical School, Nanjing UniversityNanjingChina
- State Key Laboratory of Reproductive Medicine, Department of Clinical Pharmacology, School of PharmacyNanjing Medical UniversityNanjingChina
| | - Yixin Fan
- State Key Laboratory of Reproductive Medicine, Department of Clinical Pharmacology, School of PharmacyNanjing Medical UniversityNanjingChina
- Department of Pharmacy, Sir Run Run HospitalNanjing Medical UniversityNanjingChina
| | - Ningjie Ni
- State Key Laboratory of Reproductive Medicine, Department of Clinical Pharmacology, School of PharmacyNanjing Medical UniversityNanjingChina
- Department of NeurosurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Tao Yu
- School of PharmacyNanjing Medical UniversityNanjingChina
| | - Zhiyuan Mao
- Key Laboratory for Aging & Disease, The State Key Laboratory of Reproductive Medicine, Department of Human Anatomy, Research Centre for Bone and Stem CellsNanjing Medical UniversityNanjingChina
| | - Hanyu Huang
- State Key Laboratory of Reproductive Medicine, Department of Clinical Pharmacology, School of PharmacyNanjing Medical UniversityNanjingChina
- Department of NeurosurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Jing Zhang
- Department of Clinical Pharmacology, School of PharmacyNanjing Medical UniversityNanjingChina
| | - Yulin Tang
- Department of Pharmacy, Sir Run Run HospitalNanjing Medical UniversityNanjingChina
| | - Hongliang He
- Department of Pharmacy, Sir Run Run HospitalNanjing Medical UniversityNanjingChina
| | - Fan Meng
- Department of Clinical Pharmacology, School of PharmacyNanjing Medical UniversityNanjingChina
| | - Yongping You
- Department of NeurosurgeryThe First Affiliated Hospital of Nanjing Medical UniversityNanjingChina
| | - Qi‐Gang Zhou
- State Key Laboratory of Reproductive Medicine, Department of Clinical Pharmacology, School of PharmacyNanjing Medical UniversityNanjingChina
- Department of Pharmacy, Sir Run Run HospitalNanjing Medical UniversityNanjingChina
- Department of Clinical Pharmacology, School of PharmacyNanjing Medical UniversityNanjingChina
| |
Collapse
|
2
|
Zhu LJ, Li F, Zhu DY. nNOS and Neurological, Neuropsychiatric Disorders: A 20-Year Story. Neurosci Bull 2023; 39:1439-1453. [PMID: 37074530 PMCID: PMC10113738 DOI: 10.1007/s12264-023-01060-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Accepted: 03/05/2023] [Indexed: 04/20/2023] Open
Abstract
In the central nervous system, nitric oxide (NO), a free gas with multitudinous bioactivities, is mainly produced from the oxidation of L-arginine by neuronal nitric oxide synthase (nNOS). In the past 20 years, the studies in our group and other laboratories have suggested a significant involvement of nNOS in a variety of neurological and neuropsychiatric disorders. In particular, the interactions between the PDZ domain of nNOS and its adaptor proteins, including post-synaptic density 95, the carboxy-terminal PDZ ligand of nNOS, and the serotonin transporter, significantly influence the subcellular localization and functions of nNOS in the brain. The nNOS-mediated protein-protein interactions provide new attractive targets and guide the discovery of therapeutic drugs for neurological and neuropsychiatric disorders. Here, we summarize the work on the roles of nNOS and its association with multiple adaptor proteins on neurological and neuropsychiatric disorders.
Collapse
Affiliation(s)
- Li-Juan Zhu
- Key Laboratory of Developmental Genes and Human Diseases, Ministry of Education, Department of Histology and Embryology, School of Medicine, Southeast University, Nanjing, 210009, China
| | - Fei Li
- Department of Medicinal Chemistry, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Dong-Ya Zhu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China.
| |
Collapse
|
3
|
Liu X, Liu H, Gu N, Pei J, Lin X, Zhao W. Preeclampsia promotes autism in offspring via maternal inflammation and fetal NFκB signaling. Life Sci Alliance 2023; 6:e202301957. [PMID: 37290815 PMCID: PMC10250690 DOI: 10.26508/lsa.202301957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 05/28/2023] [Accepted: 05/30/2023] [Indexed: 06/10/2023] Open
Abstract
Preeclampsia (PE) is a risk factor for autism spectrum disorder (ASD) in offspring. However, the exact mechanisms underlying the impact of PE on progeny ASD are not fully understood, which hinders the development of effective therapeutic approaches. This study shows the offspring born to a PE mouse model treated by Nω-nitro-L-arginine methyl ester (L-NAME) exhibit ASD-like phenotypes, including neurodevelopment deficiency and behavioral abnormalities. Transcriptomic analysis of the embryonic cortex and adult offspring hippocampus suggested the expression of ASD-related genes was dramatically changed. Furthermore, the level of inflammatory cytokines TNFα in maternal serum and nuclear factor kappa B (NFκB) signaling in the fetal cortex were elevated. Importantly, TNFα neutralization during pregnancy enabled to ameliorate ASD-like phenotypes and restore the NFκB activation level in the offspring exposed to PE. Furthermore, TNFα/NFκB signaling axis, but not L-NAME, caused deficits in neuroprogenitor cell proliferation and synaptic development. These experiments demonstrate that offspring exposed to PE phenocopies ASD signatures reported in humans and indicate therapeutic targeting of TNFα decreases the likelihood of bearing children with ASD phenotypes from PE mothers.
Collapse
Affiliation(s)
- Xueyuan Liu
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
- Environmental and Occupational Health Science Institute, Rutgers University, Piscataway, NJ, USA
| | - Haiyan Liu
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Nihao Gu
- International Peace Maternity & Child Health Hospital Affiliated to Shanghai Jiao Tong University School of Medicine and Shanghai Key Laboratory for Embryo-Feta Original Adult Disease, Shanghai Jiao Tong University, Shanghai, China
| | - Jiangnan Pei
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Xianhua Lin
- Obstetrics and Gynecology Hospital of Fudan University, Shanghai, China
| | - Wenlong Zhao
- Environmental and Occupational Health Science Institute, Rutgers University, Piscataway, NJ, USA
- International Peace Maternity & Child Health Hospital Affiliated to Shanghai Jiao Tong University School of Medicine and Shanghai Key Laboratory for Embryo-Feta Original Adult Disease, Shanghai Jiao Tong University, Shanghai, China
| |
Collapse
|
4
|
Jiao L, Xu T, Du X, Chen X, Jiao Q, Jiang H. The Inhibition Effects of Sodium Nitroprusside on the Survival of Differentiated Neural Stem Cells through the p38 Pathway. Brain Sci 2023; 13:brainsci13030438. [PMID: 36979248 PMCID: PMC10046126 DOI: 10.3390/brainsci13030438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 02/25/2023] [Accepted: 02/28/2023] [Indexed: 03/08/2023] Open
Abstract
Nitric oxide (NO) is a crucial factor in regulating neuronal development. However, certain effects of NO are complex under different physiological conditions. In this study, we used differentiated neural stem cells (NSCs), which contained neural progenitor cells, neurons, astrocytes, and oligodendrocytes, to observe the physiological effects of sodium nitroprusside (SNP) on the early developmental stage of the nervous system. After SNP treatment for 24 h, the results showed that SNP at 100 μM, 200 μM, 300 μM, and 400 μM concentrations resulted in reduced cell viability and increased cleaved caspase 3 levels, while no significant changes were found at 50 μM. There were no effects on neuronal differentiation in the SNP-treated groups. The phosphorylation of p38 was also significantly upregulated with SNP concentrations of 100 μM, 200 μM, 300 μM, and 400 μM, with no changes for 50 μM concentration in comparison with the control. We also observed that the levels of phosphorylation increased with the increasing concentration of SNP. To further explore the possible role of p38 in SNP-regulated survival of differentiated NSCs, SB202190, the antagonist of p38 mitogen-activated protein kinase, at a concentration of 10 mM, was pretreated for 30 min, and the ratio of phosphorylated p38 was found to be decreased after treatment with SNP. Survival and cell viability increased in the SB202190 and SNP co-treated group. Taken together, our results suggested that p38 is involved in the cell survival of NSCs, regulated by NO.
Collapse
Affiliation(s)
- Lingling Jiao
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, State Key Disciplines: Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, School of Basic Medicine, Qingdao University, Qingdao 266071, China
| | - Tongying Xu
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, State Key Disciplines: Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, School of Basic Medicine, Qingdao University, Qingdao 266071, China
| | - Xixun Du
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, State Key Disciplines: Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, School of Basic Medicine, Qingdao University, Qingdao 266071, China
| | - Xi Chen
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, State Key Disciplines: Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, School of Basic Medicine, Qingdao University, Qingdao 266071, China
| | - Qian Jiao
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, State Key Disciplines: Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, School of Basic Medicine, Qingdao University, Qingdao 266071, China
- Correspondence:
| | - Hong Jiang
- Department of Physiology, Shandong Provincial Key Laboratory of Pathogenesis and Prevention of Neurological Disorders, State Key Disciplines: Physiology, Shandong Provincial Collaborative Innovation Center for Neurodegenerative Disorders, School of Basic Medicine, Qingdao University, Qingdao 266071, China
- College of Health and Life Science, University of Health and Rehabilitation Sciences, Qingdao 266071, China
| |
Collapse
|
5
|
Regulation of pleiotropic physiological roles of nitric oxide signaling. Cell Signal 2023; 101:110496. [PMID: 36252791 DOI: 10.1016/j.cellsig.2022.110496] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 10/05/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022]
Abstract
Nitric Oxide (NO) is a highly diffusible, ubiquitous signaling molecule and a free radical that is naturally synthesized by our body. The pleiotropic effects of NO in biological systems are due to its reactivity with different molecules, such as molecular oxygen (O2), superoxide anion, DNA, lipids, and proteins. There are several contradictory findings in the literature pertaining to its role in oncology. NO is a Janus-faced molecule shown to have both tumor promoting and tumoricidal effects, which depend on its concentration, duration of exposure, and location. A high concentration is shown to have cytotoxic effects by triggering apoptosis, and at a low concentration, NO promotes angiogenesis, metastasis, and tumor progression. Upregulated NO synthesis has been implicated as a causal factor in several pathophysiological conditions including cancer. This dichotomous effect makes it highly challenging to discover its true potential in cancer biology. Understanding the mechanisms by which NO acts in different cancers helps to develop NO based therapeutic strategies for cancer treatment. This review addresses the physiological role of this molecule, with a focus on its bimodal action in various types of cancers.
Collapse
|
6
|
Huang Y, Suguro R, Hu W, Zheng J, Liu Y, Guan M, Zhou N, Zhang X. Nitric oxide and thyroid carcinoma: A review. Front Endocrinol (Lausanne) 2022; 13:1050656. [PMID: 36699047 PMCID: PMC9870175 DOI: 10.3389/fendo.2022.1050656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 12/14/2022] [Indexed: 01/11/2023] Open
Abstract
Thyroid carcinoma is the most common endocrine cancer in the world, and its incidence has been steadily increasing in recent years. Despite its relatively good prognosis, therapies have not improved greatly in recent years. Therefore, exploring new therapies for thyroid carcinoma represents an unmet need. Nitric oxide (NO) is a short-term endogenous signaling molecule that plays a vital role in various physiological and pathological processes and is synthesized by nitric oxide synthase (NOS). Many studies have been conducted over the past decades to explain its correlation to cancer. NO exerts a wide range of effects on cancer, involving angiogenesis, apoptosis, cell cycle, invasion, and metastasis. It also serves a dual function by promoting and halting tumor development simultaneously. The relationship between NO and thyroid carcinoma has been intensively studied and discussed. This paper reviews the role and molecular mechanism of NO in thyroid carcinoma and discusses potentials of prevention and treatment of thyroid carcinoma.
Collapse
Affiliation(s)
- Yu Huang
- School of Pharmacy, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Rinkiko Suguro
- State Key Laboratory of Quality Research in Chinese Medicine, Macau, Macau SAR, China
| | - Wei Hu
- State Key Laboratory of Quality Research in Chinese Medicine, Macau, Macau SAR, China
| | - Jiayu Zheng
- School of Pharmacy, Macau University of Science and Technology, Macau, Macau SAR, China
| | - Yawen Liu
- Department of Epidemiology and Biostatistics, School of Public Health, Jilin University, Changchun, China
| | - Mingxin Guan
- College of Pharmacy, Dalian Medical University, Dalian, China
| | - Na Zhou
- School of Pharmacy, Macau University of Science and Technology, Macau, Macau SAR, China
- State Key Laboratory of Quality Research in Chinese Medicine, Macau, Macau SAR, China
- *Correspondence: Na Zhou, ; Xin Zhang,
| | - Xin Zhang
- School of Pharmacy, Macau University of Science and Technology, Macau, Macau SAR, China
- State Key Laboratory of Quality Research in Chinese Medicine, Macau, Macau SAR, China
- *Correspondence: Na Zhou, ; Xin Zhang,
| |
Collapse
|
7
|
Lee H, Kang SW, Jeong H, Kwon JT, Kim YO, Kim HJ. Alteration in Cngb1 Expression upon Maternal Immune Activation in a Mouse Model and Its Possible Association with Schizophrenia Susceptibility. CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE 2021; 19:618-627. [PMID: 34690117 PMCID: PMC8553526 DOI: 10.9758/cpn.2021.19.4.618] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 10/20/2020] [Accepted: 11/11/2020] [Indexed: 11/26/2022]
Abstract
Objective The cyclic nucleotide-gated channel (Cng) regulates synaptic efficacy in brain neurons by modulating Ca2+ levels in response to changes in cyclic nucleotide concentrations. This study investigated whether the expression of Cng channel, cyclic nucleotide-gated channel subunit beta 1 (Cngb1) exhibited any relationship with the pathophysiology of schizophrenia in an animal model and whether genetic polymorphisms of the human gene were associated with the progression of schizophrenia in a Korean population. Methods We investigated whether Cngb1 expression was related to psychiatric disorders in a mouse model of schizophrenia induced by maternal immune activation. A case-control study was conducted of 275 schizophrenia patients and 410 controls with single-nucleotide polymorphisms (SNPs) in the 5′-near region of CNGB1. Results Cngb1 expression was decreased in the prefrontal cortex in the mouse model. Furthermore, the genotype frequency of a SNP (rs3756314) of CNGB1 was associated with the risk of schizophrenia. Conclusion Our results suggest that CNGB1 might be associated with schizophrenia susceptibility and maternal immune activation. Consequently, it is hypothesized that CNGB1 may be involved in the pathophysiology of schizophrenia.
Collapse
Affiliation(s)
- Hwayoung Lee
- Department of Clinical Pharmacology, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Sung Wook Kang
- Cardiovascular Center of Excellence, Louisiana State University Health Science Center, New Orleans, LA, USA
| | - Hyeonjung Jeong
- Department of Clinical Pharmacology, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Jun-Tack Kwon
- Department of Clinical Pharmacology, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Young Ock Kim
- Department of Clinical Pharmacology, Soonchunhyang University College of Medicine, Cheonan, Korea
| | - Hak-Jae Kim
- Department of Clinical Pharmacology, Soonchunhyang University College of Medicine, Cheonan, Korea
| |
Collapse
|
8
|
Kourosh-Arami M, Hosseini N, Mohsenzadegan M, Komaki A, Joghataei MT. Neurophysiologic implications of neuronal nitric oxide synthase. Rev Neurosci 2021; 31:617-636. [PMID: 32739909 DOI: 10.1515/revneuro-2019-0111] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Accepted: 03/21/2020] [Indexed: 12/12/2022]
Abstract
The molecular and chemical properties of neuronal nitric oxide synthase (nNOS) have made it a key mediator in many physiological functions and signaling transduction. The NOS monomer is inactive, but the dimer form is active. There are three forms of NOS, which are neuronal (nNOS), inducible (iNOS), and endothelial (eNOS) nitric oxide synthase. nNOS regulates nitric oxide (NO) synthesis which is the mechanism used mostly by neurons to produce NO. nNOS expression and activation is regulated by some important signaling proteins, such as cyclic adenosine monophosphate (cAMP) response element-binding protein (CREB), calmodulin (CaM), heat shock protein 90 (HSP90)/HSP70. nNOS-derived NO has been implicated in modulating many physiological functions, such as synaptic plasticity, learning, memory, neurogenesis, etc. In this review, we have summarized recent studies that have characterized structural features, subcellular localization, and factors that regulate nNOS function. Finally, we have discussed the role of nNOS in the developing brain under a wide range of physiological conditions, especially long-term potentiation and depression.
Collapse
Affiliation(s)
- Masoumeh Kourosh-Arami
- Department of Neuroscience, School of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Nasrin Hosseini
- Neuroscience Research Center, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Monireh Mohsenzadegan
- Department of Laboratory Sciences, Allied Medical College, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| | - Alireza Komaki
- Department of Physiology, Medical College, Hamedan University of Medical Sciences, Hamedan, Islamic Republic of Iran
| | - Mohammad Taghi Joghataei
- Department of Neuroscience, School of Advanced Technologies in Medicine, Iran University of Medical Sciences, Tehran, Islamic Republic of Iran
| |
Collapse
|
9
|
Neuronal Nitric Oxide Synthase in Nucleus Accumbens Specifically Mediates Susceptibility to Social Defeat Stress through Cyclin-Dependent Kinase 5. J Neurosci 2021; 41:2523-2539. [PMID: 33500273 DOI: 10.1523/jneurosci.0422-20.2021] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2020] [Revised: 11/18/2020] [Accepted: 01/16/2021] [Indexed: 11/21/2022] Open
Abstract
Stress-induced depression is common worldwide. NAc, a "reward" center, is recently reported to be critical to confer the susceptibility to chronic social defeat stress (CSDS) and the depression-related outcome. However, the underlying molecular mechanisms have not been well characterized. In this study, we induced depression-like behaviors with CSDS and chronic mild stress in male mice to mimic social and environmental factors, respectively, and observed animal behaviors with social interaction test, tail suspension test, and sucrose preference test. To determine the role of neuronal nitric oxide synthase (nNOS) and its product nitric oxide (NO), we used brain region-specifically nNOS overexpression and stereotaxic injection of NO inhibitor or donor. Moreover, the downstream molecular cyclin-dependent kinase 5 (CDK5) was explored by conditional KO and gene mutation. We demonstrate that nNOS-implicated mechanisms in NAc shell (NAcSh), including increased cell number, increased protein expression levels, and increased specific enzyme activity, contribute the susceptibility to social defeat and the following depression-like behaviors. NAcSh nNOS does not directly respond to chronic mild stress but facilitates the depression-like behaviors. The increased NAcSh nNOS expression after CSDS leads to the social avoidance and depression-like behaviors in defeated mice, which is dependent on the nNOS enzyme activity and NO production. Moreover, we identify the downstream signal in NAcSh. S-nitrosylation of CDK5 by NO contributes to enhanced CDK5 activity, leading to depression-related behaviors in susceptible mice. Therefore, NAcSh nNOS mediates susceptibility to social defeat stress and the depression-like behaviors through CDK5.SIGNIFICANCE STATEMENT Stress-induced depression is common worldwide, and chronic exposure to social and psychological stressors is important cause of human depression. Our study conducted with chronic social defeat stress mice models demonstrates that nNOS in NAcSh is crucial to regulate the susceptibility to social defeat stress and the following depression-like behaviors, indicating NAcSh nNOS as the responding molecule to social factors of depression. Moreover, we discover the downstream mechanism of NAcSh nNOS in mediating the susceptibility is NO and S-nitrosylation of CDK5. Thus, NAcSh nNOS mediates susceptibility to social defeat stress through CDK5 is a potential mechanism for depression, which may interpret how the brain transduces social stress exposure into depression.
Collapse
|
10
|
Tewari D, Sah AN, Bawari S, Nabavi SF, Dehpour AR, Shirooie S, Braidy N, Fiebich BL, Vacca RA, Nabavi SM. Role of Nitric Oxide in Neurodegeneration: Function, Regulation, and Inhibition. Curr Neuropharmacol 2020; 19:114-126. [PMID: 32348225 PMCID: PMC8033982 DOI: 10.2174/1570159x18666200429001549] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Revised: 03/17/2020] [Accepted: 04/24/2020] [Indexed: 12/14/2022] Open
Abstract
Reactive nitrogen species (RNS) and reactive oxygen species (ROS), collectively known as reactive oxygen and nitrogen species (RONS), are the products of normal cellular metabolism and interact with several vital biomolecules including nucleic acid, proteins, and membrane lipids and alter their function in an irreversible manner which can lead to cell death. There is an imperative role for oxidative stress in the pathogenesis of cognitive impairments and the development and progression of neural injury. Elevated production of higher amounts of nitric oxide (NO) takes place in numerous pathological conditions, such as neurodegenerative diseases, inflammation, and ischemia, which occur concurrently with elevated nitrosative/oxidative stress. The enzyme nitric oxide synthase (NOS) is responsible for the generation of NO in different cells by conversion of L-arginine (Arg) to L-citrulline. Therefore, the NO signaling pathway represents a viable therapeutic target. Naturally occurring polyphenols targeting the NO signaling pathway can be of major importance in the field of neurodegeneration and related complications. Here, we comprehensively review the importance of NO and its production in the human body and afterwards highlight the importance of various natural products along with their mechanisms against various neurodegenerative diseases involving their effect on NO production.
Collapse
Affiliation(s)
- Devesh Tewari
- Department of Pharmacognosy, School of Pharmaceutical Sciences, Lovely Professional University, Phagwara, Punjab, 144411, India
| | - Archana N Sah
- Department of Pharmaceutical Sciences, Faculty of Technology, Bhimtal Campus, Kumaun University, Nainital, Uttarakhand 263136, India
| | - Sweta Bawari
- School of Pharmacy, Sharda University, Knowledge Park-III, Greater Noida, Uttar Pradesh, 201310, India
| | - Seyed F Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran 1435916471, Iran
| | - Ahmad R Dehpour
- Department of Pharmacology, Faculty of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Samira Shirooie
- Pharmaceutical Sciences Research Center, Health Institute, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Nady Braidy
- Centre for Healthy Brain Ageing, School of Psychiatry, University of New South Wales, Australia
| | - Bernd L Fiebich
- Neuroimmunology and Neurochemistry Research Group, Department of Psychiatry and Psychotherapy, Medical Center - University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Rosa A Vacca
- Institute of Biomembranes, Bioenergetics and Molecular Biotechnologies, National Council of Research, Bari, Italy
| | - Seyed M Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran 1435916471, Iran
| |
Collapse
|
11
|
Zhu LJ, Shi HJ, Chang L, Zhang CC, Si M, Li N, Zhu DY. nNOS-CAPON blockers produce anxiolytic effects by promoting synaptogenesis in chronic stress-induced animal models of anxiety. Br J Pharmacol 2020; 177:3674-3690. [PMID: 32343840 DOI: 10.1111/bph.15084] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2019] [Revised: 03/16/2020] [Accepted: 04/17/2020] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND AND PURPOSE Anxiety disorder is a common mental health disorder. However, there are few safe and fast-acting anxiolytic drugs available that can treat anxiety disorder. We previously demonstrated that the interaction of neuronal NOS (nNOS) with its carboxy-terminal PDZ ligand (CAPON) is involved in regulating anxiety-related behaviours. Here, we further investigated the anxiolytic effects of nNOS-CAPON disruptors in chronic stress-induced anxiety in animals. EXPERIMENTAL APPROACH Mice were intravenously treated with nNOS-CAPON disruptors, ZLc-002 or Tat-CAPON12C, at the last week of chronic mild stress (CMS) exposure. We also infused corticosterone (CORT) into the hippocampus of mice to model anxiety behaviours and also delivered ZLc-002 or Tat-CAPON12C on the last week of chronic CORT treatment via pre-implanted cannula. Anxiety-related behaviours were examined using elevated plus maze, open field, novelty-suppressed feeding and light-dark (LD) tests. The level of nNOS-CAPON interaction was determined by co-immunoprecipitation (CO-IP) and proximity ligation assay (PLA). The neural mechanisms underlying the behavioural effects of nNOS-CAPON uncoupling in anxiety animal models were assessed by western blot, immunofluorescence and Golgi-Cox staining. KEY RESULTS ZLc-002 and Tat-CAPON12C reversed CMS- or CORT-induced anxiety-related behaviours. ZLc-002 and Tat-CAPON12C increased synaptogenesis along with improved dendritic remodelling in CMS mice or CORT-treated cultured neurons. Meanwhile, blocking nNOS-CAPON interaction significantly activated the cAMP response element-binding protein (CREB)-brain-derived neurotrophic factor (BDNF) pathway, which is associated with synaptic plasticity. CONCLUSION AND IMPLICATIONS Collectively, these results provide evidence for the anxiolytic effects of nNOS-CAPON uncouplers and their underlying mechanisms in anxiety disorders.
Collapse
Affiliation(s)
- Li-Juan Zhu
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Histology and Embryology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Hu-Jiang Shi
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Histology and Embryology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Lei Chang
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Cheng Cheng Zhang
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Histology and Embryology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Meng Si
- The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, Anhui, China
| | - Na Li
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Histology and Embryology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Dong-Ya Zhu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China
| |
Collapse
|
12
|
nNOS-expressing neurons in the vmPFC transform pPVT-derived chronic pain signals into anxiety behaviors. Nat Commun 2020; 11:2501. [PMID: 32427844 PMCID: PMC7237711 DOI: 10.1038/s41467-020-16198-5] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Accepted: 04/21/2020] [Indexed: 01/30/2023] Open
Abstract
Anxiety is common in patients suffering from chronic pain. Here, we report anxiety-like behaviors in mouse models of chronic pain and reveal that nNOS-expressing neurons in ventromedial prefrontal cortex (vmPFC) are essential for pain-induced anxiety but not algesia, using optogenetic and chemogenetic strategies. Additionally, we determined that excitatory projections from the posterior subregion of paraventricular thalamic nucleus (pPVT) provide a neuronal input that drives the activation of vmPFC nNOS-expressing neurons in our chronic pain models. Our results suggest that the pain signal becomes an anxiety signal after activation of vmPFC nNOS-expressing neurons, which causes subsequent release of nitric oxide (NO). Finally, we show that the downstream molecular mechanisms of NO likely involve enhanced glutamate transmission in vmPFC CaMKIIα-expressing neurons through S-nitrosylation-induced AMPAR trafficking. Overall, our data suggest that pPVT excitatory neurons drive chronic pain-induced anxiety through activation of vmPFC nNOS-expressing neurons, resulting in NO-mediated AMPAR trafficking in vmPFC pyramidal neurons. Chronic pain usually induces anxiety. Here, the authors report that vmPFC nNOS-expressing neurons are activated by excitatory inputs from pPVT during chronic pain and subsequently induce anxiety-like behaviors in mice through promoting AMPAR trafficking.
Collapse
|
13
|
Wang B, Huang C, Chen L, Xu D, Zheng G, Zhou Y, Wang X, Zhang X. The Emerging Roles of the Gaseous Signaling Molecules NO, H2S, and CO in the Regulation of Stem Cells. ACS Biomater Sci Eng 2019; 6:798-812. [PMID: 33464852 DOI: 10.1021/acsbiomaterials.9b01681] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Ben Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
- Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, Zhejiang 325027, China
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Chongan Huang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
- Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, Zhejiang 325027, China
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Lijie Chen
- Department of Surgical Oncology, Taizhou Hospital of Wenzhou Medical University, Taizhou, Zhejiang 317000, China
| | - Daoliang Xu
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
- Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, Zhejiang 325027, China
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Gang Zheng
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
- Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, Zhejiang 325027, China
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Yifei Zhou
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
- Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, Zhejiang 325027, China
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Xiangyang Wang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
- Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, Zhejiang 325027, China
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
| | - Xiaolei Zhang
- Department of Orthopaedics, The Second Affiliated Hospital and Yuying Children’s Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
- Key Laboratory of Orthopaedics of Zhejiang Province, Wenzhou, Zhejiang 325027, China
- The Second School of Medicine, Wenzhou Medical University, Wenzhou, Zhejiang 325027, China
- Chinese Orthopaedic Regenerative Medicine Society, Hangzhou, Zhejiang, China
| |
Collapse
|
14
|
Shen J, Wang D, Wang X, Gupta S, Ayloo B, Wu S, Prasad P, Xiong Q, Xia J, Ge S. Neurovascular Coupling in the Dentate Gyrus Regulates Adult Hippocampal Neurogenesis. Neuron 2019; 103:878-890.e3. [PMID: 31257104 DOI: 10.1016/j.neuron.2019.05.045] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 04/25/2019] [Accepted: 05/29/2019] [Indexed: 12/11/2022]
Abstract
Newborn dentate granule cells (DGCs) are continuously generated in the adult brain. The mechanism underlying how the adult brain governs hippocampal neurogenesis remains poorly understood. In this study, we investigated how coupling of pre-existing neurons to the cerebrovascular system regulates hippocampal neurogenesis. Using a new in vivo imaging method in freely moving mice, we found that hippocampus-engaged behaviors, such as exploration in a novel environment, rapidly increased microvascular blood-flow velocity in the dentate gyrus. Importantly, blocking this exploration-elevated blood flow dampened experience-induced hippocampal neurogenesis. By imaging the neurovascular niche in combination with chemogenetic manipulation, we revealed that pre-existing DGCs actively regulated microvascular blood flow. This neurovascular coupling was linked by parvalbumin-expressing interneurons, primarily through nitric-oxide signaling. Further, we showed that insulin growth factor 1 signaling participated in functional hyperemia-induced neurogenesis. Together, our findings revealed a neurovascular coupling network that regulates experience-induced neurogenesis in the adult brain.
Collapse
Affiliation(s)
- Jia Shen
- The Program of Genetics, SUNY at Stony Brook, Stony Brook, NY 11794, USA; Department of Neurobiology & Behavior, SUNY at Stony Brook, Stony Brook, NY 11794, USA
| | - Depeng Wang
- Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
| | - Xinxing Wang
- Department of Neurobiology & Behavior, SUNY at Stony Brook, Stony Brook, NY 11794, USA
| | - Shashank Gupta
- Department of Neurobiology & Behavior, SUNY at Stony Brook, Stony Brook, NY 11794, USA
| | - Bhargav Ayloo
- Department of Neurobiology & Behavior, SUNY at Stony Brook, Stony Brook, NY 11794, USA
| | - Song Wu
- Department of Applied Mathematics and Statistics, SUNY at Stony Brook, Stony Brook, NY 11794, USA
| | - Paras Prasad
- Institute for Lasers, Photonics and Biophotonics and the Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY 14260, USA
| | - Qiaojie Xiong
- Department of Neurobiology & Behavior, SUNY at Stony Brook, Stony Brook, NY 11794, USA.
| | - Jun Xia
- Department of Biomedical Engineering, University at Buffalo, State University of New York, Buffalo, NY 14260, USA.
| | - Shaoyu Ge
- Department of Neurobiology & Behavior, SUNY at Stony Brook, Stony Brook, NY 11794, USA.
| |
Collapse
|
15
|
Tang Y, Li MY, Zhang X, Jin X, Liu J, Wei PH. Delayed exposure to environmental enrichment improves functional outcome after stroke. J Pharmacol Sci 2019; 140:137-143. [PMID: 31255517 DOI: 10.1016/j.jphs.2019.05.002] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Revised: 04/22/2019] [Accepted: 04/25/2019] [Indexed: 01/08/2023] Open
Abstract
Stroke is one of the leading causes of long-term disabilities worldwide. Although exposure to an enriched environment (EE) initiated in the acute phase after stroke has neuroprotective effects and improves stroke outcome, it remains unclear whether EE has positive effects when started in a delayed time frame. Here we show that exposure to EE in the delayed phase notably ameliorates the ischemia-induced impairments in neurological functions and spatial learning and memory. In addition, delayed EE exposure after stroke significantly promotes the survival and neuronal fate choice of hippocampal newborn cells, increases synaptic density of hippocampal mature neurons, and enhances the migration of subventricular zone (SVZ)-derived cells towards the ischemic striatum. Histone deacetylase 2 (HDAC2), synapse-associated proteins and brain-derived neurotrophic factor (BDNF) may respectively mediate these roles of delayed EE. Our findings provide the suggestion that exposure to EE initiated in the delayed phase after stroke promotes plastic changes via affecting neurogenesis, synaptogenesis and neuronal migration, and thus improves stroke outcome. Because EE initiated earlier than 24 h is clinically feasible, our work could be introduced into clinical studies of stroke directly and may provide stroke survivors with a new strategy for their functional recovery.
Collapse
Affiliation(s)
- Ying Tang
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, Jiangsu, China.
| | - Ming-Yue Li
- Department of Pharmacology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Xin Zhang
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, Jiangsu, China
| | - Xing Jin
- Department of Pharmacy, The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou, Jiangsu, China
| | - Jing Liu
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, Jiangsu, China
| | - Ping-He Wei
- Jiangsu Key Laboratory of Chiral Pharmaceuticals Biosynthesis, College of Pharmacy and Chemistry & Chemical Engineering, Taizhou University, Taizhou, Jiangsu, China
| |
Collapse
|
16
|
Zhou QG, Zhu XH, Nemes AD, Zhu DY. Neuronal nitric oxide synthase and affective disorders. IBRO Rep 2018; 5:116-132. [PMID: 30591953 PMCID: PMC6303682 DOI: 10.1016/j.ibror.2018.11.004] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Revised: 11/07/2018] [Accepted: 11/13/2018] [Indexed: 01/08/2023] Open
Abstract
Affective disorders including major depressive disorder (MDD), bipolar disorder (BPD), and general anxiety affect more than 10% of population in the world. Notably, neuronal nitric oxide synthase (nNOS), a downstream signal molecule of N-methyl-D-aspartate receptors (NMDARs) activation, is abundant in many regions of the brain such as the prefrontal cortex (PFC), hippocampus, amygdala, dorsal raphe nucleus (DRN), locus coeruleus (LC), and hypothalamus, which are closely associated with the pathophysiology of affective disorders. Decreased levels of the neurotransmitters including 5-hydroxytryptamine or serotonin (5-HT), noradrenalin (NA), and dopamine (DA) as well as hyperactivity of the hypothalamic-pituitary-adrenal (HPA) axis are common pathological changes of MDD, BPD, and anxiety. Increasing data suggests that nNOS in the hippocampus play a crucial role in the etiology of MDD whereas nNOS-related dysregulation of the nitrergic system in the LC is closely associated with the pathogenesis of BPD. Moreover, hippocampal nNOS is implicated in the role of serotonin receptor 1 A (5-HTR1 A) in modulating anxiety behaviors. Augment of nNOS and its carboxy-terminal PDZ ligand (CAPON) complex mediate stress-induced anxiety and disrupting the nNOS-CAPON interaction by small molecular drug generates anxiolytic effect. To date, however, the function of nNOS in affective disorders is not well reviewed. Here, we summarize works about nNOS and its signal mechanisms implicated in the pathophysiology of affective disorders. On the basis of this review, it is suggested that future research should more fully focus on the role of nNOS in the pathomechanism and treatment of affective disorders.
Collapse
Affiliation(s)
- Qi-Gang Zhou
- Department of Clinical Pharmacology, Pharmacy College, Nanjing Medical University, Nanjing 211166, PR China
| | - Xian-Hui Zhu
- Department of Clinical Pharmacology, Pharmacy College, Nanjing Medical University, Nanjing 211166, PR China
| | - Ashley D Nemes
- Department of Neurosciences, Lerner Research Institute, Cleveland Clinic, Cleveland, USA
| | - Dong-Ya Zhu
- Department of Clinical Pharmacology, Pharmacy College, Nanjing Medical University, Nanjing 211166, PR China
| |
Collapse
|
17
|
PSD-95-nNOS Coupling Regulates Contextual Fear Extinction in the Dorsal CA3. Sci Rep 2018; 8:12775. [PMID: 30143658 PMCID: PMC6109109 DOI: 10.1038/s41598-018-30899-4] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2017] [Accepted: 04/17/2018] [Indexed: 12/16/2022] Open
Abstract
Fear extinction depends on N-methyl-D-aspartate glutamate receptors (NMDARs) and brain-derived neurotrophic factor (BDNF) activation in the limbic system. However, postsynaptic density-95 (PSD-95) and neuronal nitric oxide synthase (nNOS) coupling, the downstream signaling of NMDARs activation, obstructs the BDNF signaling transduction. Thus, we wondered distinct roles of NMDAR activation and PSD-95-nNOS coupling on fear extinction. To explore the mechanisms, we detected protein-protein interaction using coimmunoprecipitation and measured protein expression by western blot. Contextual fear extinction induced a shift from PSD-95-nNOS to PSD-95-TrkB association in the dorsal hippocampus and c-Fos expression in the dorsal CA3. Disrupting PSD-95-nNOS coupling in the dorsal CA3 up-regulated phosphorylation of extracellular signal-regulates kinase (ERK) and BDNF, enhanced the association of BDNF-TrkB signaling with PSD-95, and promoted contextual fear extinction. Conversely, blocking NMDARs in the dorsal CA3 down-regulated BDNF expression and hindered contextual fear extinction. NMDARs activation and PSD-95-nNOS coupling play different roles in modulating contextual fear extinction in the hippocampus. Because inhibitors of PSD-95-nNOS interaction produce antidepressant and anxiolytic effect without NMDAR-induced side effects, PSD-95-nNOS could be a valuable target for PTSD treatment.
Collapse
|
18
|
Lin YH, Liang HY, Xu K, Ni HY, Dong J, Xiao H, Chang L, Wu HY, Li F, Zhu DY, Luo CX. Dissociation of nNOS from PSD-95 promotes functional recovery after cerebral ischaemia in mice through reducing excessive tonic GABA release from reactive astrocytes. J Pathol 2017; 244:176-188. [DOI: 10.1002/path.4999] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Revised: 09/12/2017] [Accepted: 10/12/2017] [Indexed: 12/22/2022]
Affiliation(s)
- Yu-Hui Lin
- Department of Pharmacology, School of Pharmacy; Nanjing Medical University; Nanjing PR China
| | - Hai-Ying Liang
- Department of Pharmacology, School of Pharmacy; Nanjing Medical University; Nanjing PR China
| | - Ke Xu
- Department of Pharmacology, School of Pharmacy; Nanjing Medical University; Nanjing PR China
| | - Huan-Yu Ni
- Department of Pharmacology, School of Pharmacy; Nanjing Medical University; Nanjing PR China
| | - Jian Dong
- Department of Pharmacology, School of Pharmacy; Nanjing Medical University; Nanjing PR China
| | - Hui Xiao
- Department of Pharmacology, School of Pharmacy; Nanjing Medical University; Nanjing PR China
| | - Lei Chang
- Department of Pharmacology, School of Pharmacy; Nanjing Medical University; Nanjing PR China
- Laboratory of Cerebrovascular Disease; Nanjing Medical University; Nanjing PR China
| | - Hai-Yin Wu
- Department of Pharmacology, School of Pharmacy; Nanjing Medical University; Nanjing PR China
- Laboratory of Cerebrovascular Disease; Nanjing Medical University; Nanjing PR China
| | - Fei Li
- Department of Medicinal Chemistry, School of Pharmacy; Nanjing Medical University; Nanjing PR China
| | - Dong-Ya Zhu
- Department of Pharmacology, School of Pharmacy; Nanjing Medical University; Nanjing PR China
- Laboratory of Cerebrovascular Disease; Nanjing Medical University; Nanjing PR China
| | - Chun-Xia Luo
- Department of Pharmacology, School of Pharmacy; Nanjing Medical University; Nanjing PR China
- Laboratory of Cerebrovascular Disease; Nanjing Medical University; Nanjing PR China
| |
Collapse
|
19
|
Chavez GG, Taylor G, Garaliene J, Richardson GP, Korneev SA. The temporal expression profile of a Nos3-related natural antisense RNA in the brain suggests a possible role in neurogenesis. Nitric Oxide 2017; 71:27-31. [PMID: 29031735 PMCID: PMC5714617 DOI: 10.1016/j.niox.2017.10.002] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2017] [Revised: 09/22/2017] [Accepted: 10/11/2017] [Indexed: 12/15/2022]
Abstract
Experimental work over the past several years has revealed an unexpected abundance of long natural antisense transcripts (NATs) in eukaryotic species. In light of the proposed role of such RNA molecules in the regulation of gene expression in the brain, attention is now focused on specific examples of neuronal NATs. Of particular interest are NATs that are complementary to mRNAs encoding nitric oxide synthase (NOS), the enzyme responsible for production of the important gaseous neurotransmitter nitric oxide (NO). Here we study the temporal expression profile of murine Nos3as NAT in the brain. Notably, Nos3as NAT is known to act as a negative regulator of Nos3 gene expression. The results of our quantitative analysis reveal differential expression of Nos3as NAT during embryonic and post-embryonic stages of development of the brain. Also, they show that the low levels of Nos3as NAT coincides with active neurogenesis. In addition we report on an inverse correlation between the relative expression level of Nos3as NAT and the level of Nos3 protein. Thus our data raise the hypothesis that the Nos3as NAT regulates neurogenesis through suppression of Nos3 gene activity. This idea is further supported by experiments conducted on the olfactory bulbs and cultured neuroblastoma cells. Nos3as NAT and Nos3 mRNA are differentially expressed during mouse brain development and aging. Low levels of Nos3as NAT coincides with active neurogenesis. There is an inverse correlation between the expression level of Nos3as NAT and the level of Nos3 protein in the brain. Neuronal differentiation of cultured neuroblastoma cells is associated with up-regulation of Nos3as NAT. Nos3as NAT may be involved in controlling both embryonic and adult neurogenesis.
Collapse
Affiliation(s)
- Gabriela G Chavez
- Sussex Neuroscience, School of Life Science, University of Sussex, Brighton, BN1 9QG, UK
| | - Gabriella Taylor
- Sussex Neuroscience, School of Life Science, University of Sussex, Brighton, BN1 9QG, UK
| | - Jekaterina Garaliene
- Sussex Neuroscience, School of Life Science, University of Sussex, Brighton, BN1 9QG, UK
| | - Guy P Richardson
- Sussex Neuroscience, School of Life Science, University of Sussex, Brighton, BN1 9QG, UK
| | - Sergei A Korneev
- Sussex Neuroscience, School of Life Science, University of Sussex, Brighton, BN1 9QG, UK.
| |
Collapse
|
20
|
Zhou HH, Zhang L, Zhang HX, Zhang JP, Ge WH. Chimeric Peptide Tat-HA-NR2B9c Improves Regenerative Repair after Transient Global Ischemia. Front Neurol 2017; 8:509. [PMID: 29018405 PMCID: PMC5622973 DOI: 10.3389/fneur.2017.00509] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2017] [Accepted: 09/12/2017] [Indexed: 11/21/2022] Open
Abstract
Transient global ischemia (TGI) is a major public health problem, and it heightens the need of effective treatments. The present study was undertaken to investigate whether recombinant polypeptide Tat-HA-NR2B9c improves spatial learning and memory deficits in rats after TGI. Rats were subjected to 20-min ischemia induced by four-vessel occlusion (4-VO) method and daily injected with Tat-HA-NR2B9c (1.12 mg/kg) for 1 week. Tat-HA-NR2B9c increased CREB activity, upregulated B-cell lymphoma-2 (Bcl-2) expression after treated for 24 h. There was a significant increase in dendrite spine density in hippocampal CA1 region and BrdU-positive cells and BrdU/NeuN-positive cells in the dentate gyrus after Tat-HA-NR2B9c treatment, compared with ischemia group at postischemic day 28. Inhibition of the CREB activation by recombinant lentivirus, LV-CREB133-GFP, abolished the upregulation effects of Tat-HA-NR2B9c on Bcl-2 expression. Moreover, Tat-HA-NR2B9c improved the impaired spatial learning and memory ability in Morris water maze. These results suggest that Tat-HA-NR2B9c substantially ameliorated the TGI-induced loss of dendrite spine in hippocampal CA1, increased neurogenesis in dentate gyrus, and significantly improved cognitive abilities by the CREB pathway in rats after transient global cerebral ischemia. It may be served as a treatment for TGI.
Collapse
Affiliation(s)
- Hai-Hui Zhou
- Division of Clinical Pharmacy, Department of Pharmacy, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, China
| | - Li Zhang
- Pharmacy Department, The First Affiliated Hospital, Nanjing Medical University, Nanjing, China
| | - Hai-Xia Zhang
- Division of Clinical Pharmacy, Department of Pharmacy, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, China
| | - Jin-Ping Zhang
- Division of Clinical Pharmacy, Department of Pharmacy, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, China
| | - Wei-Hong Ge
- Division of Clinical Pharmacy, Department of Pharmacy, Drum Tower Hospital Affiliated to Medical School of Nanjing University, Nanjing, China
| |
Collapse
|
21
|
Opening a New Time Window for Treatment of Stroke by Targeting HDAC2. J Neurosci 2017; 37:6712-6728. [PMID: 28592694 DOI: 10.1523/jneurosci.0341-17.2017] [Citation(s) in RCA: 59] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Revised: 05/10/2017] [Accepted: 06/01/2017] [Indexed: 11/21/2022] Open
Abstract
Narrow therapeutic window limits treatments with thrombolysis and neuroprotection for most stroke patients. Widening therapeutic window remains a critical challenge. Understanding the key mechanisms underlying the pathophysiological events in the peri-infarct area where secondary injury coexists with neuroplasticity over days to weeks may offer an opportunity for expanding the therapeutic window. Here we show that ischemia-induced histone deacetylase 2 (HDAC2) upregulation from 5 to 7 d after stroke plays a crucial role. In this window phase, suppressing HDAC2 in the peri-infarct cortex of rodents by HDAC inhibitors, knockdown or knock-out of Hdac2 promoted recovery of motor function from stroke via epigenetically enhancing cells survival and neuroplasticity of surviving neurons as well as reducing neuroinflammation, whereas overexpressing HDAC2 worsened stroke-induced functional impairment of both WT and Hdac2 conditional knock-out mice. More importantly, inhibiting other isoforms of HDACs had no effect. Thus, the intervention by precisely targeting HDAC2 in this window phase is a novel strategy for the functional recovery of stroke survivors.SIGNIFICANCE STATEMENT Narrow time window phase impedes current therapies for stroke patients. Understanding the key mechanisms underlying secondary injury may open a new window for pharmacological interventions to promote recovery from stroke. Our study indicates that ischemia-induced histone deacetylase 2 upregulation from 5 to 7 d after stroke mediates the secondary functional loss by reducing survival and neuroplasticity of peri-infarct neurons as well as augmenting neuroinflammation. Thus, precisely targeting histone deacetylase 2 in the window phase provides a novel therapeutic strategy for stroke recovery.
Collapse
|
22
|
Wang DL, Qian XD, Lin YH, Tian BB, Liang HY, Chang L, Wu HY, Zhu DY, Luo CX. ZL006 promotes migration and differentiation of transplanted neural stem cells in male rats after stroke. J Neurosci Res 2017; 95:2409-2419. [PMID: 28512996 DOI: 10.1002/jnr.24068] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2016] [Revised: 03/29/2017] [Accepted: 03/31/2017] [Indexed: 01/17/2023]
Abstract
New strategies must be developed to resolve the problems of stroke treatment. In recent years, stem cell-based therapy after stroke has come into the public and academic lens. Previously we have shown that uncoupling neuronal nitric oxide synthase (nNOS) from the postsynaptic density protein-95 (PSD-95) by ZL006, a small molecular compound, can ameliorate ischemic damage and promote neuronal differentiation of endogenous neural stem cells (NSCs) in focal cerebral ischemic male rats. In this study, we transplanted exogenous NSCs into the ipsilateral hemisphere of male rats in combination with ZL006 treatment after ischemic stroke. We show that ZL006 treatment facilitates the migration of transplanted NSCs into the ischemia-injured area and promotes neuronal differentiation of these cells, which is not due to a direct effect of ZL006 on exogenous NSCs but is associated with increased phosphorylation of cAMP response element-binding protein (CREB) in neurons and favorable microenvironment. Moreover, improved functional outcome in the ZL006-treated group was also found. Taken together, our data indicate that ZL006, uncoupling nNOS-PSD-95 in neurons, positively regulates the fate of transplanted NSCs and benefits the functional outcome after stroke in male rats.
Collapse
Affiliation(s)
- Dong-Liang Wang
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Xiao-Dan Qian
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Yu-Hui Lin
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Bin-Bin Tian
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Hai-Ying Liang
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Lei Chang
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China.,Laboratory of Cerebrovascular Disease, Nanjing Medical University, Nanjing, China
| | - Hai-Yin Wu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China.,Laboratory of Cerebrovascular Disease, Nanjing Medical University, Nanjing, China
| | - Dong-Ya Zhu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China.,Laboratory of Cerebrovascular Disease, Nanjing Medical University, Nanjing, China.,Institution of Stem Cells and Neuroregeneration, Nanjing Medical University, Nanjing, China
| | - Chun-Xia Luo
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China.,Laboratory of Cerebrovascular Disease, Nanjing Medical University, Nanjing, China.,Institution of Stem Cells and Neuroregeneration, Nanjing Medical University, Nanjing, China
| |
Collapse
|
23
|
Ottoboni L, Merlini A, Martino G. Neural Stem Cell Plasticity: Advantages in Therapy for the Injured Central Nervous System. Front Cell Dev Biol 2017; 5:52. [PMID: 28553634 PMCID: PMC5427132 DOI: 10.3389/fcell.2017.00052] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2017] [Accepted: 04/25/2017] [Indexed: 12/14/2022] Open
Abstract
The physiological and pathological properties of the neural germinal stem cell niche have been well-studied in the past 30 years, mainly in animals and within given limits in humans, and knowledge is available for the cyto-architectonic structure, the cellular components, the timing of development and the energetic maintenance of the niche, as well as for the therapeutic potential and the cross talk between neural and immune cells. In recent years we have gained detailed understanding of the potentiality of neural stem cells (NSCs), although we are only beginning to understand their molecular, metabolic, and epigenetic profile in physiopathology and, further, more can be invested to measure quantitatively the activity of those cells, to model in vitro their therapeutic responses or to predict interactions in silico. Information in this direction has been put forward for other organs but is still limited in the complex and very less accessible context of the brain. A comprehensive understanding of the behavior of endogenous NSCs will help to tune or model them toward a desired response in order to treat complex neurodegenerative diseases. NSCs have the ability to modulate multiple cellular functions and exploiting their plasticity might make them into potent and versatile cellular drugs.
Collapse
Affiliation(s)
- Linda Ottoboni
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
| | - Arianna Merlini
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
| | - Gianvito Martino
- Neuroimmunology Unit, Division of Neuroscience, Institute of Experimental Neurology, San Raffaele Scientific InstituteMilan, Italy
| |
Collapse
|
24
|
Roles of Nitric Oxide Synthase Isoforms in Neurogenesis. Mol Neurobiol 2017; 55:2645-2652. [PMID: 28421538 DOI: 10.1007/s12035-017-0513-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2017] [Accepted: 04/04/2017] [Indexed: 10/19/2022]
Abstract
Nitric oxide (NO), a free radical gas, acts as a neurotransmitter or neuromodulator in the central nervous system (CNS). It has been widely explored as a mediator of neuroinflammation, neuronal damages, and neurodegeneration at its pathological levels. Recently, increasing evidence suggests that NO plays key roles in mediating adult neurogenesis, the process of neural stem cells (NSCs) to generate newborn neurons for replacing damaged neurons or maintaining the function of the brain. NO synthase (NOS) is a major enzyme catalyzing the generation of NO in the brain. Recent studies indicate that three homologous NOS isoforms are involved in the proliferation of NSCs and neurogenesis. Therefore, the impact of NOS isoforms on NSC functions needs to be elucidated. Here, we summarize the studies on the role of NO and NOS with different isoforms in NSC proliferation and neurogenesis with the focus on introducing action mechanisms involved in the regulation of NSC function. This growing research area provides the new insight into controlling NSC function via regulating NO microenvironment in the brain. It also provides the evidence on targeting NOS for the treatment of brain diseases.
Collapse
|
25
|
Jin X, Yu ZF, Chen F, Lu GX, Ding XY, Xie LJ, Sun JT. Neuronal Nitric Oxide Synthase in Neural Stem Cells Induces Neuronal Fate Commitment via the Inhibition of Histone Deacetylase 2. Front Cell Neurosci 2017; 11:66. [PMID: 28326018 PMCID: PMC5339248 DOI: 10.3389/fncel.2017.00066] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2017] [Accepted: 02/24/2017] [Indexed: 11/13/2022] Open
Abstract
Active adult neurogenesis produces new functional neurons, which replace the lost ones and contribute to brain repair. Promoting neurogenesis may offer a therapeutic strategy for human diseases associated with neurodegeneration. Here, we report that endogenous neuronal nitric oxide synthase (nNOS) for neural stem cells (NSCs) or progenitors positively regulates neurogenesis. nNOS repression exhibits significantly decreased neuronal differentiation and nNOS upregulation promotes neurons production from NSCs. Using a quantitative approach, we show that instructive effect, that is instruction of NSCs to adopt a neuronal fate, contributes to the favorable effect of endogenous nNOS on neurogenesis. Furthermore, nNOS-mediated instruction of neuronal fate commitment is predominantly due to the reduction of histone deacetylase 2 (HDAC2) expression and enzymatic activity. Further investigation will be needed to test whether HDAC2 can serve as a new target for therapeutic intervention of neurodegenerative disorders.
Collapse
Affiliation(s)
- Xing Jin
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Zhang-Feng Yu
- Department of Critical Care Medicine, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Fang Chen
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Guang-Xian Lu
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Xin-Yuan Ding
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Lin-Jun Xie
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| | - Jian-Tong Sun
- Department of Pharmacy, the Affiliated Suzhou Municipal Hospital, Nanjing Medical University, Suzhou, China
| |
Collapse
|
26
|
Macedo-Lima M, Freire MAM, de Carvalho Pimentel H, Rodrigues Ferreira Lins LC, Amador de Lucena Medeiros KA, Viola GG, dos Santos JR, Marchioro M. Characterization of NADPH Diaphorase- and Doublecortin-Positive Neurons in the Lizard Hippocampal Formation. BRAIN, BEHAVIOR AND EVOLUTION 2017; 88:222-234. [DOI: 10.1159/000453105] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Accepted: 11/06/2016] [Indexed: 11/19/2022]
Abstract
The lizard cortex has remarkable similarities with the mammalian hippocampus. Both regions process memories, have similar cytoarchitectural properties, and are important neurogenic foci in adults. Lizards show striking levels of widespread neurogenesis in adulthood and can regenerate entire cortical areas after injury. Nitric oxide (NO) is an important regulatory factor of mammalian neurogenesis and hippocampal function. However, little is known about its role in nonmammalian neurogenesis. Here, we analyzed the distribution, morphology, and dendritic complexity (Neurolucida reconstructions) of NO-producing neurons through NADPH diaphorase (NADPHd) activity, and how they compare with the distribution of doublecortin-positive (DCX+) neurons in the hippocampal formation of the neotropical lizard Tropidurus hispidus. NADPHd-positive (NADPHd+) neurons in the dorsomedial cortex (DMC; putatively homologous to mammalian CA3) were more numerous and complex than the ones in the medial cortex (MC; putatively homologous to the dentate gyrus). We found that NADPHd+ DMC neurons send long projections into the MC. Interestingly, in the MC, NADPHd+ neurons existed in 2 patterns: small somata with low intensity of staining in the outer layer and large somata with high intensity of staining in the deep layer, a pattern similar to the mammalian cortex. Additionally, NADPHd+ neurons were absent in the granular cell layer of the MC. In contrast, DCX+ neurons were scarce in the DMC but highly numerous in the MC, particularly in the granular cell layer. We hypothesize that NO-producing neurons in the DMC provide important input to proliferating/migrating neurons in the highly neurogenic MC.
Collapse
|
27
|
Gu J, Bao Y, Chen J, Huang C, Zhang X, Jiang R, Liu Q, Liu Y, Xu X, Shi W. The Expression of NP847 and Sox2 after TBI and Its Influence on NSCs. Front Cell Neurosci 2016; 10:282. [PMID: 28066182 PMCID: PMC5177638 DOI: 10.3389/fncel.2016.00282] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Accepted: 11/25/2016] [Indexed: 12/31/2022] Open
Abstract
The proliferation and differentiation of neural stem cells (NSCs) is important for neural regeneration after cerebral injury. Here, for the first time, we show that phosphorylated (p)-ser847-nNOS (NP847), rather than nNOS, may play a major role in NSC proliferation after traumatic brain injury (TBI). Western blot results demonstrated that the expression of NP847 and Sox2 in the hippocampus is up-regulated after TBI, and they both peak 3 days after brain injury. In addition, an immunofluorescence experiment indicated that NP847 and Sox2 partly co-localize in the nuclei of NSCs after TBI. Further immunoprecipitation experiments found that NP847 and Sox2 can directly interact with each other in NSCs. Moreover, in an OGD model of NSCs, NP847 expression is decreased, which is followed by the down-regulation of Sox2. Interestingly, in this study, we did not observe changes in the expression of nNOS in the OGD model. Further research data suggest that the NP847-Sox2 complex may play a major role in NSCs through the Shh/Gli signaling pathway in a CaMKII-dependent manner after brain injury.
Collapse
Affiliation(s)
- Jun Gu
- Department of Neurosurgery, Affiliated Hospital of Nantong UniversityNantong, China; Department of Neurosurgery, Yancheng Third People's HospitalYancheng, China
| | - Yifeng Bao
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University Nantong, China
| | - Jian Chen
- Department of Neurosurgery, Affiliated Hospital of Nantong University Nantong, China
| | - Chuanjun Huang
- Department of Neurosurgery, The First People's Hospital of Wujiang Soochow, China
| | - Xinghua Zhang
- Department of Anatomy and Neurobiology, Nantong University Nantong, China
| | - Rui Jiang
- Department of Neurosurgery, Affiliated Hospital of Nantong University Nantong, China
| | - Qianqian Liu
- Department of Neurosurgery, Affiliated Hospital of Nantong University Nantong, China
| | - Yonghua Liu
- Jiangsu Province Key Laboratory for Inflammation and Molecular Drug Target, Nantong University Nantong, China
| | - Xide Xu
- Department of Neurosurgery, Affiliated Hospital of Nantong University Nantong, China
| | - Wei Shi
- Department of Neurosurgery, Affiliated Hospital of Nantong University Nantong, China
| |
Collapse
|
28
|
Extremely low-frequency electromagnetic fields enhance the proliferation and differentiation of neural progenitor cells cultured from ischemic brains. Neuroreport 2016; 26:896-902. [PMID: 26339991 DOI: 10.1097/wnr.0000000000000450] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
In the mammalian brain, neurogenesis persists throughout the embryonic period and adulthood in the subventricular zone of the lateral ventricle and the granular zone (dentate gyrus) of the hippocampus. Newborn neural progenitor cells (NPCs) in the two regions play a critical role in structural and functional plasticity and neural regeneration after brain injury. Previous studies have reported that extremely low-frequency electromagnetic fields (ELF-EMF) could promote osteogenesis, angiogenesis, and cardiac stem cells' differentiation, which indicates that ELF-EMF might be an effective tool for regenerative therapy. The present studies were carried out to examine the effects of ELF-EMF on hippocampal NPCs cultured from embryonic and adult ischemic brains. We found that exposure to ELF-EMF (50 Hz, 0.4 mT) significantly enhanced the proliferation capability both in embryonic NPCs and in ischemic NPCs. Neuronal differentiation was also enhanced after 7 days of cumulative ELF-EMF exposure, whereas glial differentiation was not influenced markedly. The expression of phosphorylated Akt increased during the proliferation process when ischemic NPCs were exposed to ELF-EMF. However, blockage of the Akt pathway abolished the ELF-EMF-induced proliferation of ischemic NPCs. These data show that ELF-EMF promotes neurogenesis of ischemic NPCs and suggest that this effect may occur through the Akt pathway.Video abstract, Supplemental Digital Content 1, http://links.lww.com/WNR/A347.
Collapse
|
29
|
Zhang F, Qian X, Qin C, Lin Y, Wu H, Chang L, Luo C, Zhu D. Phosphofructokinase-1 Negatively Regulates Neurogenesis from Neural Stem Cells. Neurosci Bull 2016; 32:205-16. [PMID: 27146165 DOI: 10.1007/s12264-016-0032-y] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2015] [Accepted: 03/13/2016] [Indexed: 12/31/2022] Open
Abstract
Phosphofructokinase-1 (PFK-1), a major regulatory glycolytic enzyme, has been implicated in the functions of astrocytes and neurons. Here, we report that PFK-1 negatively regulates neurogenesis from neural stem cells (NSCs) by targeting pro-neural transcriptional factors. Using in vitro assays, we found that PFK-1 knockdown enhanced, and PFK-1 overexpression inhibited the neuronal differentiation of NSCs, which was consistent with the findings from NSCs subjected to 5 h of hypoxia. Meanwhile, the neurogenesis induced by PFK-1 knockdown was attributed to the increased proliferation of neural progenitors and the commitment of NSCs to the neuronal lineage. Similarly, in vivo knockdown of PFK-1 also increased neurogenesis in the dentate gyrus of the hippocampus. Finally, we demonstrated that the neurogenesis mediated by PFK-1 was likely achieved by targeting mammalian achaete-scute homologue-1 (Mash 1), neuronal differentiation factor (NeuroD), and sex-determining region Y (SRY)-related HMG box 2 (Sox2). All together, our results reveal PFK-1 as an important regulator of neurogenesis.
Collapse
Affiliation(s)
- Fengyun Zhang
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Xiaodan Qian
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Cheng Qin
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Yuhui Lin
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Haiyin Wu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Lei Chang
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China
| | - Chunxia Luo
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China.,Institute of Stem Cells and Neuroregeneration, Nanjing Medical University, Nanjing, 211166, China.,Laboratory of Cerebrovascular Disease, Nanjing Medical University, Nanjing, 211166, China
| | - Dongya Zhu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, 211166, China. .,Institute of Stem Cells and Neuroregeneration, Nanjing Medical University, Nanjing, 211166, China. .,Laboratory of Cerebrovascular Disease, Nanjing Medical University, Nanjing, 211166, China. .,Key Laboratory of Human Functional Genomics of Jiangsu Province, Nanjing, 211166, China.
| |
Collapse
|
30
|
Han Z, Gao LY, Lin YH, Chang L, Wu HY, Luo CX, Zhu DY. Neuroprotection of taurine against reactive oxygen species is associated with inhibiting NADPH oxidases. Eur J Pharmacol 2016; 777:129-35. [PMID: 26945820 DOI: 10.1016/j.ejphar.2016.03.006] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Revised: 02/19/2016] [Accepted: 03/01/2016] [Indexed: 10/22/2022]
Abstract
It is well established that taurine shows potent protection against glutamate-induced injury to neurons in stroke. The neuroprotection may result from multiple mechanisms. Increasing evidences suggest that NADPH oxidases (Nox), the primary source of superoxide induced by N-methyl-d-aspartate (NMDA) receptor activation, are involved in the process of oxidative stress. We found that 100μM NMDA induced oxidative stress by increasing the reactive oxygen species level, which contributed to the cell death, in vitro. Neuron cultures pretreated with 25mM taurine showed lower percentage of death cells and declined reactive oxygen species level. Moreover, taurine attenuated Nox2/Nox4 protein expression and enzyme activity and declined intracellular calcium intensity during NMDA-induced neuron injury. Additionally, taurine also showed neuroprotection against H2O2-induced injury, accompanying with Nox inhibition. So, we suppose that protection of taurine against reactive oxygen species during NMDA-induced neuron injury is associated with Nox inhibition, probably in a calcium-dependent manner.
Collapse
Affiliation(s)
- Zhou Han
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 210029, People's Republic of China
| | - Li-Yan Gao
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 210029, People's Republic of China
| | - Yu-Hui Lin
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 210029, People's Republic of China
| | - Lei Chang
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 210029, People's Republic of China; Laboratory of Cerebrovascular Disease, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing 210029, People's Republic of China
| | - Hai-Yin Wu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 210029, People's Republic of China; Laboratory of Cerebrovascular Disease, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing 210029, People's Republic of China
| | - Chun-Xia Luo
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 210029, People's Republic of China; Laboratory of Cerebrovascular Disease, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing 210029, People's Republic of China
| | - Dong-Ya Zhu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing 210029, People's Republic of China; Laboratory of Cerebrovascular Disease, Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing 210029, People's Republic of China; The key laboratory of human functional genomics of Jiangsu Province, Nanjing 210029, People's Republic of China.
| |
Collapse
|
31
|
Wang W, Lee Y, Lee CH. Effects of nitric oxide on stem cell therapy. Biotechnol Adv 2015; 33:1685-96. [PMID: 26394194 DOI: 10.1016/j.biotechadv.2015.09.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2015] [Revised: 09/14/2015] [Accepted: 09/18/2015] [Indexed: 12/27/2022]
Abstract
The use of stem cells as a research tool and a therapeutic vehicle has demonstrated their great potential in the treatment of various diseases. With unveiling of nitric oxide synthase (NOS) universally present at various levels in nearly all types of body tissues, the potential therapeutic implication of nitric oxide (NO) has been magnified, and thus scientists have explored new treatment strategies involved with stem cells and NO against various diseases. As the functionality of NO encompasses cardiovascular, neuronal and immune systems, NO is involved in stem cell differentiation, epigenetic regulation and immune suppression. Stem cells trigger cellular responses to external signals on the basis of both NO specific pathways and concerted action with endogenous compounds including stem cell regulators. As potency and interaction of NO with stem cells generally depend on the concentrations of NO and the presence of the cofactors at the active site, the suitable carriers for NO delivery is integral for exerting maximal efficacy of stem cells. The innovative utilization of NO functionality and involved mechanisms would invariably alter the paradigm of therapeutic application of stem cells. Future prospects in NO-involved stem cell research which promises to enhance drug discovery efforts by opening new era to improve drug efficacy, reduce drug toxicity and understand disease mechanisms and pathways, were also addressed.
Collapse
Affiliation(s)
- Wuchen Wang
- School of Pharmacy University of Missouri, Kansas City, USA
| | - Yugyung Lee
- School of Computing and Engineering, University of Missouri, Kansas City, USA
| | - Chi H Lee
- School of Pharmacy University of Missouri, Kansas City, USA.
| |
Collapse
|
32
|
Acevedo LM, Lindquist JN, Walsh BM, Sia P, Cimadamore F, Chen C, Denzel M, Pernia CD, Ranscht B, Terskikh A, Snyder EY, Cheresh DA. hESC Differentiation toward an Autonomic Neuronal Cell Fate Depends on Distinct Cues from the Co-Patterning Vasculature. Stem Cell Reports 2015; 4:1075-88. [PMID: 26004631 PMCID: PMC4471822 DOI: 10.1016/j.stemcr.2015.04.013] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2014] [Revised: 04/22/2015] [Accepted: 04/25/2015] [Indexed: 11/23/2022] Open
Abstract
To gain insight into the cellular and molecular cues that promote neurovascular co-patterning at the earliest stages of human embryogenesis, we developed a human embryonic stem cell model to mimic the developing epiblast. Contact of ectoderm-derived neural cells with mesoderm-derived vasculature is initiated via the neural crest (NC), not the neural tube (NT). Neurovascular co-patterning then ensues with specification of NC toward an autonomic fate requiring vascular endothelial cell (EC)-secreted nitric oxide (NO) and direct contact with vascular smooth muscle cells (VSMCs) via T-cadherin-mediated homotypic interactions. Once a neurovascular template has been established, NT-derived central neurons then align themselves with the vasculature. Our findings reveal that, in early human development, the autonomic nervous system forms in response to distinct molecular cues from VSMCs and ECs, providing a model for how other developing lineages might coordinate their co-patterning. Neural crest (NC) cells drive neurovascular co-patterning, as modeled by hESC Autonomic differentiation of NC cells depends on contact with perivascular cells This requires endothelial-derived NO and T-cadherin-mediated interaction with VSMCs
Collapse
Affiliation(s)
- Lisette M Acevedo
- Moores Cancer Center, University of California, San Diego, La Jolla, CA, 92093, USA; Sanford Burnham Medical Research Institute, La Jolla, CA 92037, USA; Department of Pathology, University of California, San Diego, La Jolla, CA 92093, USA
| | - Jeffrey N Lindquist
- Moores Cancer Center, University of California, San Diego, La Jolla, CA, 92093, USA; Sanford Burnham Medical Research Institute, La Jolla, CA 92037, USA
| | - Breda M Walsh
- Moores Cancer Center, University of California, San Diego, La Jolla, CA, 92093, USA
| | - Peik Sia
- Moores Cancer Center, University of California, San Diego, La Jolla, CA, 92093, USA
| | | | - Connie Chen
- Sanford Burnham Medical Research Institute, La Jolla, CA 92037, USA
| | - Martin Denzel
- Sanford Burnham Medical Research Institute, La Jolla, CA 92037, USA
| | - Cameron D Pernia
- Sanford Burnham Medical Research Institute, La Jolla, CA 92037, USA; Sanford Consortium for Regenerative Medicine, La Jolla, CA 92037, USA
| | - Barbara Ranscht
- Sanford Burnham Medical Research Institute, La Jolla, CA 92037, USA
| | - Alexey Terskikh
- Sanford Burnham Medical Research Institute, La Jolla, CA 92037, USA
| | - Evan Y Snyder
- Sanford Burnham Medical Research Institute, La Jolla, CA 92037, USA; Sanford Consortium for Regenerative Medicine, La Jolla, CA 92037, USA; Department of Pediatrics, University of California, San Diego, La Jolla, CA 92093, USA.
| | - David A Cheresh
- Moores Cancer Center, University of California, San Diego, La Jolla, CA, 92093, USA; Sanford Consortium for Regenerative Medicine, La Jolla, CA 92037, USA; Department of Pathology, University of California, San Diego, La Jolla, CA 92093, USA.
| |
Collapse
|
33
|
Zhou HH, Tang Y, Zhang XY, Luo CX, Gao LY, Wu HY, Chang L, Zhu DY. Delayed Administration of Tat-HA-NR2B9c Promotes Recovery After Stroke in Rats. Stroke 2015; 46:1352-8. [PMID: 25851770 DOI: 10.1161/strokeaha.115.008886] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Accepted: 03/16/2015] [Indexed: 12/24/2022]
Abstract
BACKGROUND AND PURPOSE Previous studies reported that Tat-NR2B9c, a peptide disrupting the N-methyl-d-aspartate receptor-postsynaptic density protein-95 interaction, reduced ischemic damage in the acute phase after stroke. However, its effect in the subacute phase is unknown. The aim of this study is to determine whether disrupting the N-methyl-d-aspartate receptor-postsynaptic density protein-95 interaction in the subacute phase promotes recovery after stroke. METHODS Studies were performed on Sprague-Dawley rats or nNOS(-/-) mice, and experimental ischemic stroke was induced by middle cerebral artery occlusion. Animals were treated with drugs starting at day 4 after ischemia. Sensorimotor functions and spatial learning and memory ability were assessed after drug treatment. Then, rats were euthanized for morphological observation and biochemical tests. RESULTS Disrupting the N-methyl-d-aspartate receptor-postsynaptic density protein-95 interaction with Tat-HA-NR2B9c significantly ameliorated the ischemia-induced impairments of spatial memory and sensorimotor functions in rats during subacute stage but did not improve stroke outcome in nNOS(-/-) mice. Consistent with the functional recovery, Tat-HA-NR2B9c substantially increased neurogenesis in the dentate gyrus and dendritic spine density of mature neurons in the motor cortex of rats, meanwhile, reversed the ischemia-induced formation of S-nitrosylation-cyclin-dependent kinase 5 and increased cyclin-dependent kinase 5 activity in ipsilateral hippocampus. However, directly blocking N-methyl-d-aspartate receptors with MK-801 or Ro 25-6981 did not show the beneficial effects above. CONCLUSIONS Dissociating N-methyl-d-aspartate receptor-postsynaptic density protein-95 coupling by Tat-HA-NR2B9c in the subacute phase after stroke promotes functional recovery, probably because of that it increases neurogenesis and dendritic spine density of mature neurons via regulating cyclin-dependent kinase 5 in the ischemic brain.
Collapse
Affiliation(s)
- Hai-Hui Zhou
- From the Department of Pharmacology, School of Pharmacy (H.-H.Z., Y.T., X.-Y.Z., C.-X.L., L.-Y.G., H.-Y.W., L.C., D.-Y.Z.), Institution of Stem Cells and Neuroregeneration (C.-X.L., H.-Y.W., D.-Y.Z.), Nanjing Medical University, Nanjing, China
| | - Ying Tang
- From the Department of Pharmacology, School of Pharmacy (H.-H.Z., Y.T., X.-Y.Z., C.-X.L., L.-Y.G., H.-Y.W., L.C., D.-Y.Z.), Institution of Stem Cells and Neuroregeneration (C.-X.L., H.-Y.W., D.-Y.Z.), Nanjing Medical University, Nanjing, China
| | - Xin-Yong Zhang
- From the Department of Pharmacology, School of Pharmacy (H.-H.Z., Y.T., X.-Y.Z., C.-X.L., L.-Y.G., H.-Y.W., L.C., D.-Y.Z.), Institution of Stem Cells and Neuroregeneration (C.-X.L., H.-Y.W., D.-Y.Z.), Nanjing Medical University, Nanjing, China
| | - Chun-Xia Luo
- From the Department of Pharmacology, School of Pharmacy (H.-H.Z., Y.T., X.-Y.Z., C.-X.L., L.-Y.G., H.-Y.W., L.C., D.-Y.Z.), Institution of Stem Cells and Neuroregeneration (C.-X.L., H.-Y.W., D.-Y.Z.), Nanjing Medical University, Nanjing, China
| | - Li-Yan Gao
- From the Department of Pharmacology, School of Pharmacy (H.-H.Z., Y.T., X.-Y.Z., C.-X.L., L.-Y.G., H.-Y.W., L.C., D.-Y.Z.), Institution of Stem Cells and Neuroregeneration (C.-X.L., H.-Y.W., D.-Y.Z.), Nanjing Medical University, Nanjing, China
| | - Hai-Yin Wu
- From the Department of Pharmacology, School of Pharmacy (H.-H.Z., Y.T., X.-Y.Z., C.-X.L., L.-Y.G., H.-Y.W., L.C., D.-Y.Z.), Institution of Stem Cells and Neuroregeneration (C.-X.L., H.-Y.W., D.-Y.Z.), Nanjing Medical University, Nanjing, China
| | - Lei Chang
- From the Department of Pharmacology, School of Pharmacy (H.-H.Z., Y.T., X.-Y.Z., C.-X.L., L.-Y.G., H.-Y.W., L.C., D.-Y.Z.), Institution of Stem Cells and Neuroregeneration (C.-X.L., H.-Y.W., D.-Y.Z.), Nanjing Medical University, Nanjing, China
| | - Dong-Ya Zhu
- From the Department of Pharmacology, School of Pharmacy (H.-H.Z., Y.T., X.-Y.Z., C.-X.L., L.-Y.G., H.-Y.W., L.C., D.-Y.Z.), Institution of Stem Cells and Neuroregeneration (C.-X.L., H.-Y.W., D.-Y.Z.), Nanjing Medical University, Nanjing, China.
| |
Collapse
|
34
|
Geloso MC, Corvino V, Di Maria V, Marchese E, Michetti F. Cellular targets for neuropeptide Y-mediated control of adult neurogenesis. Front Cell Neurosci 2015; 9:85. [PMID: 25852477 PMCID: PMC4360818 DOI: 10.3389/fncel.2015.00085] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2015] [Accepted: 02/23/2015] [Indexed: 12/14/2022] Open
Abstract
Neuropeptides are emerging as key regulators of stem cell niche activities in health and disease, both inside and outside the central nervous system (CNS). Among them, neuropeptide Y (NPY), one of the most abundant neuropeptides both in the nervous system and in non-neural districts, has become the focus of much attention for its involvement in a wide range of physiological and pathological conditions, including the modulation of different stem cell activities. In particular, a pro-neurogenic role of NPY has been evidenced in the neurogenic niche, where a direct effect on neural progenitors has been demonstrated, while different cellular types, including astrocytes, microglia and endothelial cells, also appear to be responsive to the peptide. The marked modulation of the NPY system during several pathological conditions that affect neurogenesis, including stress, seizures and neurodegeneration, further highlights the relevance of this peptide in the regulation of adult neurogenesis. In view of the considerable interest in understanding the mechanisms controlling neural cell fate, this review aims to summarize and discuss current data on NPY signaling in the different cellular components of the neurogenic niche in order to elucidate the complexity of the mechanisms underlying the modulatory properties of this peptide.
Collapse
Affiliation(s)
- Maria Concetta Geloso
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore Rome, Italy
| | - Valentina Corvino
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore Rome, Italy
| | - Valentina Di Maria
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore Rome, Italy
| | - Elisa Marchese
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore Rome, Italy
| | - Fabrizio Michetti
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore Rome, Italy
| |
Collapse
|
35
|
Prozorovski T, Schneider R, Berndt C, Hartung HP, Aktas O. Redox-regulated fate of neural stem progenitor cells. Biochim Biophys Acta Gen Subj 2015; 1850:1543-54. [PMID: 25662818 DOI: 10.1016/j.bbagen.2015.01.022] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2015] [Accepted: 01/29/2015] [Indexed: 12/31/2022]
Abstract
BACKGROUND Accumulated data indicate that self-renewal, multipotency, and differentiation of neural stem cells are under an intrinsic control mediated by alterations in the redox homeostasis. These dynamic redox changes not only reflect and support the ongoing metabolic and energetic processes, but also serve to coordinate redox-signaling cascades. Controlling particular redox couples seems to have a relevant impact on cell fate decision during development, adult neurogenesis and regeneration. SCOPE OF REVIEW Our own research provided initial evidence for the importance of NAD+-dependent enzymes in neural stem cell fate decision. In this review, we summarize recent knowledge on the active role of reactive oxygen species, redox couples and redox-signaling mechanisms on plasticity and function of neural stem and progenitor cells focusing on NAD(P)+/NAD(P)H-mediated processes. MAJOR CONCLUSIONS The compartmentalized subcellular sources and availability of oxidizing/reducing molecules in particular microenvironment define the specificity of redox regulation in modulating the delicate balance between stemness and differentiation of neural progenitors. The generalization of "reactive oxygen species" as well as the ambiguity of their origin might explain the diametrically-opposed findings in the field of redox-dependent cell fate reflected by the literature. GENERAL SIGNIFICANCE Increasing knowledge of temporary and spatially defined redox regulation is of high relevance for the development of novel approaches in the field of cell-based regeneration of nervous tissue in various pathological states. This article is part of a special issue entitled Redox regulation of differentiation and de-differentiation.
Collapse
Affiliation(s)
- Tim Prozorovski
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany.
| | - Reiner Schneider
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Carsten Berndt
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Hans-Peter Hartung
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| | - Orhan Aktas
- Department of Neurology, Medical Faculty, Heinrich-Heine-University, Düsseldorf, Germany
| |
Collapse
|
36
|
McCarthy CA, Facey LJ, Widdop RE. The protective arms of the renin-angiontensin system in stroke. Curr Hypertens Rep 2015; 16:440. [PMID: 24816974 DOI: 10.1007/s11906-014-0440-1] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
It is quite well established that activation of the so-called protective arms of the renin-angiotensin system (RAS), involving both AT2 and Mas receptors, provides a counter-regulatory role to AT1 receptor overactivity that may drive pathological changes in the cardiovascular system. In this brief review, we will focus on recent evidence that identifies at least three different pathways that may be effective in the setting of stroke and may be complementary with AT1 receptor blockade. Such mechanisms include AT2 receptor stimulation, Mas receptor stimulation and insulin-regulated aminopeptidase blockade. This report highlights recent data demonstrating striking neuroprotective effects in preclinical models of stroke targeting each of these pathways, which may pave the way for translational opportunities in this field.
Collapse
Affiliation(s)
- Claudia A McCarthy
- Department of Pharmacology, Monash University, Clayton, Victoria, 3800, Australia
| | | | | |
Collapse
|
37
|
Abstract
Stroke is a major public health concern. The lack of effective therapies heightens the need for new therapeutic targets. Mammalian brain has the ability to rewire itself to restore lost functionalities. Promoting regenerative repair, including neurogenesis and dendritic remodeling, may offer a new therapeutic strategy for the treatment of stroke. Here, we report that interaction of neuronal nitric oxide synthase (nNOS) with the protein postsynaptic density-95 (PSD-95) negatively controls regenerative repair after stroke in rats. Dissociating nNOS-PSD-95 coupling in neurons promotes neuronal differentiation of neural stem cells (NSCs), facilitates the migration of newborn cells into the injured area, and enhances neurite growth of newborn neurons and dendritic spine formation of mature neurons in the ischemic brain of rats. More importantly, blocking nNOS-PSD-95 binding during the recovery stage improves stroke outcome via the promotion of regenerative repair in rats. Histone deacetylase 2 in NSCs may mediate the role of nNOS-PSD-95 association. Thus, nNOS-PSD-95 can serve as a target for regenerative repair after stroke.
Collapse
|
38
|
The synergetic effect of edaravone and borneol in the rat model of ischemic stroke. Eur J Pharmacol 2014; 740:522-31. [PMID: 24975100 DOI: 10.1016/j.ejphar.2014.06.035] [Citation(s) in RCA: 71] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2014] [Revised: 06/19/2014] [Accepted: 06/19/2014] [Indexed: 12/31/2022]
Abstract
Free radical production contributes to the early ischemic response and the neuroinflammatory response to injury initiates the second wave of cell death following ischemic stroke. Edaravone is a free radical scavenger, and borneol has shown anti-inflammatory effect. We investigated the synergistic effect of these two drugs in the rat model of transient cerebral ischemia. Edaravone scavenged OH, NO and ONOO─ concentration-dependently, and borneol inhibited ischemia/reperfusion-induced tumor necrosis factor-α (TNF-α), inducible nitric oxide synthase (iNOS), interleukin-1β (IL-1β) and cyclooxygenase-2 (COX-2) expressions. In the rat model of transient cerebral ischemia and reperfusion, the combination of edaravone and borneol significantly ameliorated ischemic damage with an optimal proportion of 4:1. Emax (% inhibition) of edaravone, borneol and two drugs in combination was 55.7%, 65.8% and 74.3% respectively. ED50 of edaravone and borneol was 7.17 and 0.36 mg/kg respectively. When two drugs in combination, ED50 was 0.484 mg/kg, in which edaravone was 0.387 mg/kg (ineffective dose) and borneol was 0.097 mg/kg (ineffective dose). Combination index (CI)<1 among effects observed in experiments, suggesting a significant synergistic effect. Reduced levels of pro-inflammatory mediators and free radicals were probably associated with the synergistic effect of edaravone and borneol. The combination exhibited a therapeutic time window of 6h in ischemia/reperfusion model, and significantly ameliorated damages in permanent ischemia model. Moreover, two drugs in combination promoted long-term effect, including improved elemental vital signs, sensorimotor functions and spatial cognition. Our results suggest that the combination of edaravone and borneol have a synergistic effect for treating ischemic stroke.
Collapse
|
39
|
Effect of the N-methyl-D-aspartate NR2B subunit antagonist ifenprodil on precursor cell proliferation in the hippocampus. J Neurosci Res 2014; 92:679-91. [DOI: 10.1002/jnr.23347] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2013] [Revised: 11/12/2013] [Accepted: 11/14/2013] [Indexed: 12/27/2022]
|
40
|
Abstract
Since it was first identified to play an important role in relaxation of blood vessels, nitric oxide has been demonstrated to regulate many biological processes, especially in the central nervous system. Of the three types of enzymes that produce nitric oxide in humans and rodents, neuronal type is found almost exclusively in the nervous system. This gaseous molecule is a nonclassical neurotransmitter, which maintains the activities of neural cells and regulates the normal functions of brain. It appears to play a role in promoting the transfer of nerve signals from one neuron to another, maintaining the synaptic strength. Meanwhile, nitric oxide is a unique regulator on neurogenesis and synaptogenesis, producing the positive or negative effects upon different signal pathways or cellular origins and locations. Based on its significant roles in neural plasticity, nitric oxide is involved in a number of central nervous diseases, such as ischemia, depression, anxiety, and Alzheimer's disease. Clarifying the profiles of nitric oxide in the brain tissues and its participation in pathophysiological processes opens a new avenue for development of new therapeutic strategies. Thus, this chapter specifies the effects of nitric oxide in the hippocampus, a key structure implicated in the modulation of mood and memories, exhibiting the trend of future research on nitric oxide.
Collapse
Affiliation(s)
- Yao Hu
- Institute for Stem Cells and Neural Regeneration, School of Pharmacy, Nanjing Medical University, Nanjing, China
| | - Dong-Ya Zhu
- Institute for Stem Cells and Neural Regeneration, School of Pharmacy, Nanjing Medical University, Nanjing, China; Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, China.
| |
Collapse
|
41
|
Abstract
The ubiquitous gaseous signaling molecule nitric oxide participates in the regulation of a variety of physiological and pathological processes, including adult neurogenesis. Adult neurogenesis, or the generation of new neurons in the adult brain, is a restricted event confined to areas with neurogenic capability. Although nitric oxide has been shown to mediate conflicting effects on adult neurogenesis, which may be partly explained by its unique characteristics, more studies are required in order to fully comprehend and appreciate the mechanisms involved. Neuropeptide Y, a neurotransmitter shown to be an important regulator of adult hippocampal neurogenesis, acts through intracellular nitric oxide to induce an increase in neural progenitor cell proliferation.
Collapse
|
42
|
Yang L, Chao J, Kook YH, Gao Y, Yao H, Buch SJ. Involvement of miR-9/MCPIP1 axis in PDGF-BB-mediated neurogenesis in neuronal progenitor cells. Cell Death Dis 2013; 4:e960. [PMID: 24336080 PMCID: PMC3877557 DOI: 10.1038/cddis.2013.486] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2013] [Revised: 11/04/2013] [Accepted: 11/05/2013] [Indexed: 12/27/2022]
Abstract
Highly conserved microRNA-9 (miR-9) has a critical role in various cellular processes including neurogenesis. However, its regulation by neurotropins that are known to mediate neurogenesis remains poorly defined. In this study, we identify platelet-derived growth factor-BB (PDGF-BB)-mediated upregulation of miR-9, which in turn downregulates its target gene monocyte chemotactic protein-induced protein 1 (MCPIP1), as a key player in modulating proliferation, neuronal differentiation as well as migration of neuronal progenitor cells (NPCs). Results indicate that miR-9-mediated NPC proliferation and neuronal differentiation involves signaling via the nuclear factor-kappa B (NF-κB) and cAMP response element-binding protein (CREB) pathways, and that NPC migration involves CREB but not the NF-κB signaling. These findings thus suggest that miR-9-mediated downregulation of MCPIP1 acts as a molecular switch regulation of neurogenesis.
Collapse
Affiliation(s)
- L Yang
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | - J Chao
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | - Y H Kook
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | - Y Gao
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | - H Yao
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| | - S J Buch
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198-5880, USA
| |
Collapse
|
43
|
Anderson G, Maes M. Neurodegeneration in Parkinson's disease: interactions of oxidative stress, tryptophan catabolites and depression with mitochondria and sirtuins. Mol Neurobiol 2013; 49:771-83. [PMID: 24085563 DOI: 10.1007/s12035-013-8554-z] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2013] [Accepted: 09/19/2013] [Indexed: 11/29/2022]
Abstract
The biological underpinnings to the etiology and course of neurodegeneration in Parkinson's disease are an area of extensive research that has yet to produce an early biological marker or disease-slowing or preventative treatment. Recent conceptualizations of Parkinson's disease have integrated immuno-inflammation and oxidative and nitrosative stress occurring in depression, somatization and peripheral inflammation into the course of Parkinson's disease. We review the data showing the importance of immuno-inflammatory processes and oxidative and nitrosative stress in such classically conceived 'comorbidities', suggesting that lifetime, prodromal and concurrent depression and somatization may be intricately involved in the etiology and course of Parkinson's disease, rather than psychiatric comorbidities. This produces a longer term developmental perspective of Parkinson's disease, which incorporates tryptophan catabolites (TRYCATs), lipid peroxidation, sirtuins, cyclic adenosine monophosphate, aryl hydrocarbon receptor, and circadian genes. This integrates wider bodies of data pertaining to neuronal loss in Parkinson's disease, emphasizing how these interact with susceptibility genes to drive changes in mitochondria, blood-brain barrier permeability and intercellular signalling. We review this data here in the context of neurodegeneration in Parkinson's disease and to the future directions indicated for slowing disease progression.
Collapse
|
44
|
Podda MV, Piacentini R, Barbati SA, Mastrodonato A, Puzzo D, D’Ascenzo M, Leone L, Grassi C. Role of cyclic nucleotide-gated channels in the modulation of mouse hippocampal neurogenesis. PLoS One 2013; 8:e73246. [PMID: 23991183 PMCID: PMC3750014 DOI: 10.1371/journal.pone.0073246] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Accepted: 07/18/2013] [Indexed: 12/25/2022] Open
Abstract
Neural stem cells generate neurons in the hippocampal dentate gyrus in mammals, including humans, throughout adulthood. Adult hippocampal neurogenesis has been the focus of many studies due to its relevance in processes such as learning and memory and its documented impairment in some neurodegenerative diseases. However, we are still far from having a complete picture of the mechanism regulating this process. Our study focused on the possible role of cyclic nucleotide-gated (CNG) channels. These voltage-independent channels activated by cyclic nucleotides, first described in retinal and olfactory receptors, have been receiving increasing attention for their involvement in several brain functions. Here we show that the rod-type, CNGA1, and olfactory-type, CNGA2, subunits are expressed in hippocampal neural stem cells in culture and in situ in the hippocampal neurogenic niche of adult mice. Pharmacological blockade of CNG channels did not affect cultured neural stem cell proliferation but reduced their differentiation towards the neuronal phenotype. The membrane permeant cGMP analogue, 8-Br-cGMP, enhanced neural stem cell differentiation to neurons and this effect was prevented by CNG channel blockade. In addition, patch-clamp recording from neuron-like differentiating neural stem cells revealed cGMP-activated currents attributable to ion flow through CNG channels. The current work provides novel insights into the role of CNG channels in promoting hippocampal neurogenesis, which may prove to be relevant for stem cell-based treatment of cognitive impairment and brain damage.
Collapse
Affiliation(s)
- Maria Vittoria Podda
- Institute of Human Physiology, Medical School, Università Cattolica, Rome, Italy
| | - Roberto Piacentini
- Institute of Human Physiology, Medical School, Università Cattolica, Rome, Italy
| | | | - Alessia Mastrodonato
- Institute of Human Physiology, Medical School, Università Cattolica, Rome, Italy
| | - Daniela Puzzo
- Section of Physiology, Department of Bio-Medical Sciences, University of Catania, Catania, Italy
| | - Marcello D’Ascenzo
- Institute of Human Physiology, Medical School, Università Cattolica, Rome, Italy
| | - Lucia Leone
- Institute of Human Physiology, Medical School, Università Cattolica, Rome, Italy
| | - Claudio Grassi
- Institute of Human Physiology, Medical School, Università Cattolica, Rome, Italy
| |
Collapse
|
45
|
Dooley D, Vidal P, Hendrix S. Immunopharmacological intervention for successful neural stem cell therapy: New perspectives in CNS neurogenesis and repair. Pharmacol Ther 2013; 141:21-31. [PMID: 23954656 DOI: 10.1016/j.pharmthera.2013.08.001] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2013] [Accepted: 07/26/2013] [Indexed: 12/11/2022]
Abstract
The pharmacological support and stimulation of endogenous and transplanted neural stem cells (NSCs) is a major challenge in brain repair. Trauma to the central nervous system (CNS) results in a distinct inflammatory response caused by local and infiltrating immune cells. This makes NSC-supported regeneration difficult due to the presence of inhibitory immune factors which are upregulated around the lesion site. The continual and dual role of the neuroinflammatory response leaves it difficult to decipher upon a single modulatory strategy. Therefore, understanding the influence of cytokines upon regulation of NSC self-renewal, proliferation and differentiation is crucial when designing therapies for CNS repair. There is a plethora of partially conflicting data in vitro and in vivo on the role of cytokines in modulating the stem cell niche and the milieu around NSC transplants. This is mainly due to the pleiotropic role of many factors. In order for cell-based therapy to thrive, treatment must be phase-specific to the injury and also be personalized for each patient, i.e. taking age, sex, neuroimmune and endocrine status as well as other key parameters into consideration. In this review, we will summarize the most relevant information concerning interleukin (IL)-1, IL-4, IL-10, IL-15, IFN-γ, the neuropoietic cytokine family and TNF-α in order to extract promising therapeutic approaches for further research. We will focus on the consequences of neuroinflammation on endogenous brain stem cells and the transplantation environment, the effects of the above cytokines on NSCs, as well as immunopharmacological manipulation of the microenvironment for potential therapeutic use.
Collapse
Affiliation(s)
- Dearbhaile Dooley
- Dep. of Morphology & Biomedical Research Institute, Hasselt University, Belgium
| | - Pia Vidal
- Dep. of Morphology & Biomedical Research Institute, Hasselt University, Belgium
| | - Sven Hendrix
- Dep. of Morphology & Biomedical Research Institute, Hasselt University, Belgium.
| |
Collapse
|
46
|
Chao J, Yang L, Buch S, Gao L. Angiotensin II increased neuronal stem cell proliferation: role of AT2R. PLoS One 2013; 8:e63488. [PMID: 23691054 PMCID: PMC3655161 DOI: 10.1371/journal.pone.0063488] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2012] [Accepted: 04/03/2013] [Indexed: 01/09/2023] Open
Abstract
Angiotensin II (Ang II), known a potent vasoactive substance in the renin-angiotensin system in the brain, plays a critical role in systemic blood pressure control. However, increasing evidence indicated that the physiological role of Ang II go beyond its vasoactive effect. In the present study, we demonstrated that Ang II type-1 receptor (AT1R) and type-2 receptor (AT2R) were expressed in primary rat hippocampal neuronal stem cells (NSCs). Treatment of rat hippocampal NSCs with Ang II increased cell proliferation. Pretreatment of NSCs with specific AT2R, but not AT1R, antagonist significantly suppressed Ang II-induced cell proliferation. Furthermore, Ang II stimulated ERK and Akt phosphorylation in NSCs. Pretreatment of MEK inhibitor, but not PI3K inhibitor, inhibited Ang II-induced ERK phosphorylation as well as cell proliferation. In addition, stimulation of NSCs with Ang II decreased expression of KV 1.2/KV 3.1 channels and blocked K+ currents which lie downstream of ERK activation. Taken together, these findings underpin the role of AT2R as a novel target that regulates cell proliferation mediated by Ang II with implications for therapeutic intervention for regulation of neurogenesis.
Collapse
Affiliation(s)
- Jie Chao
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Lu Yang
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Shilpa Buch
- Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
| | - Lie Gao
- Department of Cellular and Integrative Physiology, University of Nebraska Medical Center, Omaha, Nebraska, United States of America
- * E-mail:
| |
Collapse
|
47
|
Zhang RL, Zhang ZG, Chopp M. Targeting nitric oxide in the subacute restorative treatment of ischemic stroke. Expert Opin Investig Drugs 2013; 22:843-51. [PMID: 23597052 DOI: 10.1517/13543784.2013.793672] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
INTRODUCTION Stroke remains the leading cause of adult disability. Thus, it is imperative to develop restorative therapies for ischemic stroke designed specifically to treat the intact brain tissue to stimulate functional benefit. Therapies targeting amplification of brain repair processes with nitric oxide (NO) donors and phosphodiesterase type 5 (PDE5) inhibitors in preclinical studies are emerging and showing improvement of functional recovery after stroke. AREAS COVERED This review will mainly cover the effect of NO donors, which produce NO, and PDE5 inhibitors, which elevate cyclic guanosine 3',5'-monophosphate (cGMP), on neural restorative events in ischemic brain and highlight mechanisms underlying their restorative therapeutic activity. EXPERT OPINION During stroke recovery, interwoven restorative events occur in ischemic brain, which include angiogenesis, neurogenesis, oligodendrogenesis, astrogliosis and neurite outgrowth. Emerging preclinical data indicate that restorative therapies targeting multiple parenchymal cells including neural stem cells, cerebral endothelial cells, astrocytes, oligodendrocytes, neurons would be more effective than agents with a single cell target. Preclinical data suggest that elevated cGMP levels induced by NO donors and PDE5 inhibitors act on cerebral endothelial cells, neural stem cells and oligodendrocyte progenitor cells to enhance stroke-induced angiogenesis, neurogenesis and oligodendrogenesis, respectively. These interacting remodeling events collectively improve neurological function after stroke.
Collapse
Affiliation(s)
- Rui Lan Zhang
- Henry Ford Hospital, Department of Neurology, 2799 West Grand Boulevard, Detroit, MI 48202, USA
| | | | | |
Collapse
|
48
|
Chen C, Wang Y, Goh SSL, Yang J, Lam DH, Choudhury Y, Tay FC, Du S, Tan WK, Purwanti YI, Fan W, Wang S. Inhibition of neuronal nitric oxide synthase activity promotes migration of human-induced pluripotent stem cell-derived neural stem cells toward cancer cells. J Neurochem 2013; 126:318-30. [PMID: 23406356 DOI: 10.1111/jnc.12199] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2012] [Revised: 01/25/2013] [Accepted: 02/12/2013] [Indexed: 01/09/2023]
Abstract
The breakthrough in derivation of human-induced pluripotent stem cells (hiPSCs) provides an approach that may help overcome ethical and allergenic challenges posed in numerous medical applications involving human cells, including neural stem/progenitor cells (NSCs). Considering the great potential of NSCs in targeted cancer gene therapy, we investigated in this study the tumor tropism of hiPSC-derived NSCs and attempted to enhance the tropism by manipulation of biological activities of proteins that are involved in regulating the migration of NSCs toward cancer cells. We first demonstrated that hiPSC-NSCs displayed tropism for both glioblastoma cells and breast cancer cells in vitro and in vivo. We then compared gene expression profiles between migratory and non-migratory hiPSC-NSCs toward these cancer cells and observed that the gene encoding neuronal nitric oxide synthase (nNOS) was down-regulated in migratory hiPSC-NSCs. Using nNOS inhibitors and nNOS siRNAs, we demonstrated that this protein is a relevant regulator in controlling migration of hiPSC-NSCs toward cancer cells, and that inhibition of its activity or down-regulation of its expression can sensitize poorly migratory NSCs and be used to improve their tumor tropism. These findings suggest a novel application of nNOS inhibitors in neural stem cell-mediated cancer therapy.
Collapse
Affiliation(s)
- Can Chen
- Department of Biological Sciences, National University of Singapore, Singapore, Singapore
| | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
49
|
Cheung A, Newland PL, Zaben M, Attard GS, Gray WP. Intracellular nitric oxide mediates neuroproliferative effect of neuropeptide y on postnatal hippocampal precursor cells. J Biol Chem 2012; 287:20187-96. [PMID: 22474320 PMCID: PMC3370201 DOI: 10.1074/jbc.m112.346783] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2012] [Revised: 03/23/2012] [Indexed: 01/25/2023] Open
Abstract
Neuropeptide Y (NPY) is widely expressed in the central and peripheral nervous systems and is proliferative for a range of cells types in vitro. NPY plays a key role in regulating adult hippocampal neurogenesis in vivo under both basal and pathological conditions, although the underlying mechanisms are largely unknown. We have investigated the role of nitric oxide (NO) on the neurogenic effects of NPY. Using postnatal rat hippocampal cultures, we show that the proliferative effect of NPY on nestin(+) precursor cells is NO-dependent. As well as the involvement of neuronal nitric-oxide synthase, the proliferative effect is mediated via an NO/cyclic guanosine monophosphate (cGMP)/cGMP-dependent protein kinase (PKG) and extracellular signal-regulated kinase (ERK) 1/2 signaling pathway. We show that NPY-mediated intracellular NO signaling results in an increase in neuroproliferation. By contrast, extracellular NO had an opposite, inhibitory effect on proliferation. The importance of the NO-cGMP-PKG signaling pathway in ERK1/2 activation was confirmed using Western blotting. This work unites two significant modulators of hippocampal neurogenesis within a common signaling framework and provides a mechanism for the independent extra- and intracellular regulation of postnatal neural precursors by NO.
Collapse
Affiliation(s)
- Angela Cheung
- From the Division of Clinical Neurosciences
- Centre for Biological Sciences, and
| | | | | | - George S. Attard
- School of Chemistry, University of Southampton, Southampton SO17 1BJ and
| | - William P. Gray
- From the Division of Clinical Neurosciences
- the Institute of Psychological Medicine and Clinical Neurosciences, Cardiff University, Cardiff CF14 4XN, Wales, United Kingdom
| |
Collapse
|
50
|
Liu M, Hu Y, Zhu L, Chen C, Zhang Y, Sun W, Zhou Q. Overexpression of the mTERT gene by adenoviral vectors promotes the proliferation of neuronal stem cells in vitro and stimulates neurogenesis in the hippocampus of mice. J Biomed Res 2012; 26:381-8. [PMID: 23554775 PMCID: PMC3613735 DOI: 10.7555/jbr.26.20110078] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2011] [Revised: 10/31/2011] [Accepted: 12/18/2011] [Indexed: 11/03/2022] Open
Abstract
We sought to construct the adenoviral vector carrying the gene encoding mouse telomerase reverse transcriptase (mTERT), as well as detect its expression and effect on the proliferation of neuronal stem cells. mTERT was amplified by RT-PCR and then the eukaryotic expression vector of pDC-EGFP-TERT was constructed. After DNA sequence analysis, we detected that there were 293 cells transfected with pDC-EGFP-TERT and helper adenovirus plasmid pBHG lox ΔE1, and three Cre using Lipofectamine 2000 mediation, named Ad-mTERT-GFP, to package adenoviral particles. The Ad-mTERT-GFP was used to infect neuronal stem cells and then the expression and activity of mTERT were detected. In addition, Bromodeoxyuridine labeling test identified the impact of mTERT overexpression on proliferation of neuronal stem cells. The recombinant adenoviral vector confirmed that mTERT was successfully constructed. Overexpression of mTERT stimulated the proliferation of neuronal stem cells both in vitro and in vivo. mTERT overexpression via adenoviral vector carrying mTERT cDNA upregulated the ability of proliferation in neuronal stem cells.
Collapse
Affiliation(s)
- Mengying Liu
- Department of Pharmacology, Pharmacy College, Nanjing Medical University, Nanjing, Jiangsu 210029, China
| | | | | | | | | | | | | |
Collapse
|