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Song Y, Wei J, Li R, Fu R, Han P, Wang H, Zhang G, Li S, Chen S, Liu Z, Zhao Y, Zhu C, Zhu J, Zhang S, Pei H, Cheng J, Wu J, Dong L, Song G, Shen X, Yao Q. Tyrosine kinase receptor B attenuates liver fibrosis by inhibiting TGF-β/SMAD signaling. Hepatology 2023; 78:1433-1447. [PMID: 36800849 PMCID: PMC10581422 DOI: 10.1097/hep.0000000000000319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/26/2022] [Revised: 01/11/2023] [Accepted: 01/12/2023] [Indexed: 02/22/2023]
Abstract
BACKGROUND AND AIMS Liver fibrosis is a leading indicator for increased mortality and long-term comorbidity in NASH. Activation of HSCs and excessive extracellular matrix production are the hallmarks of liver fibrogenesis. Tyrosine kinase receptor (TrkB) is a multifunctional receptor that participates in neurodegenerative disorders. However, paucity of literature is available about TrkB function in liver fibrosis. Herein, the regulatory network and therapeutic potential of TrkB were explored in the progression of hepatic fibrosis. METHODS AND RESULTS The protein level of TrkB was decreased in mouse models of CDAHFD feeding or carbon tetrachloride-induced hepatic fibrosis. TrkB suppressed TGF-β-stimulated proliferation and activation of HSCs in 3-dimensional liver spheroids and significantly repressed TGF-β/SMAD signaling pathway either in HSCs or in hepatocytes. The cytokine, TGF-β, boosted Nedd4 family interacting protein-1 (Ndfip1) expression, promoting the ubiquitination and degradation of TrkB through E3 ligase Nedd4-2. Moreover, carbon tetrachloride intoxication-induced hepatic fibrosis in mouse models was reduced by adeno-associated virus vector serotype 6 (AAV6)-mediated TrkB overexpression in HSCs. In addition, in murine models of CDAHFD feeding and Gubra-Amylin NASH (GAN), fibrogenesis was reduced by adeno-associated virus vector serotype 8 (AAV8)-mediated TrkB overexpression in hepatocytes. CONCLUSION TGF-β stimulated TrkB degradation through E3 ligase Nedd4-2 in HSCs. TrkB overexpression inhibited the activation of TGF-β/SMAD signaling and alleviated the hepatic fibrosis both in vitro and in vivo . These findings demonstrate that TrkB could be a significant suppressor of hepatic fibrosis and confer a potential therapeutic target in hepatic fibrosis.
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Affiliation(s)
- Yu Song
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Jiayi Wei
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Rong Li
- Department of Neurosurgery, Shanghai Changhai Hospital, Naval Medical University, Shanghai, China
| | - Ruifeng Fu
- Shanghai Key Lab of Cell Engineering, Translational Medicine Research Center, Naval Medical University, Shanghai, China
| | - Pei Han
- Otsuka Shanghai Research Institute, Shanghai, China
| | - Heming Wang
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Guangcong Zhang
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Shuyu Li
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Sinuo Chen
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Zhiyong Liu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Yicheng Zhao
- Key Laboratory of Organ Regeneration and Transplantation of the Ministry of Education, Center for Pathogen Biology and Infectious Diseases, The First Hospital of Jilin University, Changchun, China
- Joint Laboratory of Biomaterials and Translational Medicine, Puheng Technology, Suzhou, China
| | - Changfeng Zhu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Jimin Zhu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Shuncai Zhang
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Hao Pei
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, China
| | - Jiefei Cheng
- Otsuka Shanghai Research Institute, Shanghai, China
- Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Jian Wu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
- MOE/NHC/CAMS Key Laboratory of Medical Molecular Virology, Department of Medical Microbiology and Parasitology, School of Basic Medical Sciences, Fudan University, Shanghai, China
| | - Ling Dong
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Guangqi Song
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Joint Laboratory of Biomaterials and Translational Medicine, Puheng Technology, Suzhou, China
| | - Xizhong Shen
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
| | - Qunyan Yao
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Liver Diseases, Shanghai, China
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The Role of Neurotrophic Factors in Pathophysiology of Major Depressive Disorder. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1305:257-272. [PMID: 33834404 DOI: 10.1007/978-981-33-6044-0_14] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
According to the neurotrophic hypothesis of major depressive disorder (MDD), impairment in growth factor signaling might be associated with the pathology of this illness. Current evidence demonstrates that impaired neuroplasticity induced by alterations of neurotrophic growth factors and related signaling pathways may be underlying to the pathophysiology of MDD. Brain-derived neurotrophic factor (BDNF) is the most studied neurotrophic factor involved in the neurobiology of MDD. Nevertheless, developing evidence has implicated other neurotrophic factors, including neurotrophin-3 (NT-3), neurotrophin-4 (NT-4), nerve growth factor (NGF), vascular endothelial growth factor (VEGF), insulin-like growth factor (IGF), glial cell-derived neurotrophic factor (GDNF), and fibroblast growth factor (FGF) in the MDD pathophysiology. Here, we summarize the current literature on the involvement of neurotrophic factors and related signaling pathways in the pathophysiology of MDD.
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Ghosh M, Ali A, Joshi S, Srivastava AS, Tapadia MG. SLC1A3 C3590T but not BDNF G196A is a predisposition factor for stress as well as depression, in an adolescent eastern Indian population. BMC MEDICAL GENETICS 2020; 21:53. [PMID: 32171272 PMCID: PMC7071583 DOI: 10.1186/s12881-020-0993-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Accepted: 03/04/2020] [Indexed: 01/19/2023]
Abstract
Background Adolescence is a distinctive stage of various changes and is noted as peak age for onset of many psychiatric disorders, especially linked to stress and depression. Several genetic variations are being increasingly known to be linked with stress and depression. The polymorphisms in two such genes, the BDNF and SLC1A3, have been reported to be linked with either depression/stress or with suicidal behaviour. These genes have not been validated in Indian population, and therefore there is a need to investigate these genes in Indian population. The present study was undertaken to test whether the known polymorphisms SLC1A3 C3590T, SLC1A3 C869G and BDNF G196A are associated or not with stress or depression in an eastern Indian population. Methods A case-control association study was performed with 108 cases having variable levels of stress and depression and 205 matched controls. Detection of stress and depression was done by using standard instruments as PSS and CES-D, respectively and demographic profile was obtained for each individual on the basis of personal data sheet. Genotyping for the selected polymorphisms was performed by PCR followed by restriction digestion. Results The SNP SLC1A3 C3590T was found to be associated with stress and depression (p = 0.0042, OR = 2.072). Therefore, the T allele increases the risk by more than two folds for stress and depression in the present population. The other allele of SLC1A3, G869C, as well as BDNF G196A were not associated with stress or depression in the population studied. Conclusion SLC1A3 C3590T is a predisposition factor for stress and depression in an eastern Indian population, whereas SLC1A3 G869C and BDNF G196A were not found to be a risk factor. Therefore, presence of T allele of SLC1A3 C3590T, may predict the development of stress and depression in an individual. This may also help in the understanding of pathophysiology of the disease. However, these findings warrant a wider study in Indian populations and would be of significance in understanding the predisposition of stress and depression in this population.
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Affiliation(s)
- Madhumita Ghosh
- Cytogenetics Laboratory, Department of Zoology, Banaras Hindu University, Varanasi, 221005, India
| | - Akhtar Ali
- Centre for Genetic Disorders, Faculty of Science, Banaras Hindu University, Varanasi, 221005, India
| | - Shobhna Joshi
- Department of Psychology, Faculty of Arts, Banaras Hindu University, Varanasi, 221005, India
| | - Adya Shankar Srivastava
- Department of Psychiatry, Institute of Medical Sciences, Banaras Hindu University, Varanasi, 221005, India
| | - Madhu G Tapadia
- Cytogenetics Laboratory, Department of Zoology, Banaras Hindu University, Varanasi, 221005, India.
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Levy MJF, Boulle F, Steinbusch HW, van den Hove DLA, Kenis G, Lanfumey L. Neurotrophic factors and neuroplasticity pathways in the pathophysiology and treatment of depression. Psychopharmacology (Berl) 2018; 235:2195-2220. [PMID: 29961124 PMCID: PMC6061771 DOI: 10.1007/s00213-018-4950-4] [Citation(s) in RCA: 163] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Accepted: 06/18/2018] [Indexed: 02/06/2023]
Abstract
Depression is a major health problem with a high prevalence and a heavy socioeconomic burden in western societies. It is associated with atrophy and impaired functioning of cortico-limbic regions involved in mood and emotion regulation. It has been suggested that alterations in neurotrophins underlie impaired neuroplasticity, which may be causally related to the development and course of depression. Accordingly, mounting evidence suggests that antidepressant treatment may exert its beneficial effects by enhancing trophic signaling on neuronal and synaptic plasticity. However, current antidepressants still show a delayed onset of action, as well as lack of efficacy. Hence, a deeper understanding of the molecular and cellular mechanisms involved in the pathophysiology of depression, as well as in the action of antidepressants, might provide further insight to drive the development of novel fast-acting and more effective therapies. Here, we summarize the current literature on the involvement of neurotrophic factors in the pathophysiology and treatment of depression. Further, we advocate that future development of antidepressants should be based on the neurotrophin theory.
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Affiliation(s)
- Marion J F Levy
- Centre de Psychiatrie et Neurosciences (Inserm U894), Université Paris Descartes, 102-108 rue de la santé, 75014, Paris, France
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Fabien Boulle
- Centre de Psychiatrie et Neurosciences (Inserm U894), Université Paris Descartes, 102-108 rue de la santé, 75014, Paris, France
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Harry W Steinbusch
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Daniël L A van den Hove
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands
- Department of Psychiatry, Psychosomatics and Psychotherapy, University of Wuerzburg, Wuerzburg, Germany
| | - Gunter Kenis
- Department of Psychiatry and Neuropsychology, Maastricht University, Maastricht, The Netherlands
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands
| | - Laurence Lanfumey
- Centre de Psychiatrie et Neurosciences (Inserm U894), Université Paris Descartes, 102-108 rue de la santé, 75014, Paris, France.
- EURON-European Graduate School of Neuroscience, Maastricht, The Netherlands.
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Tsai SJ. Critical Issues in BDNF Val66Met Genetic Studies of Neuropsychiatric Disorders. Front Mol Neurosci 2018; 11:156. [PMID: 29867348 PMCID: PMC5962780 DOI: 10.3389/fnmol.2018.00156] [Citation(s) in RCA: 83] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 04/24/2018] [Indexed: 12/20/2022] Open
Abstract
Neurotrophins have been implicated in the pathophysiology of many neuropsychiatric diseases. Brain-derived neurotrophic factor (BDNF) is the most abundant and widely distributed neurotrophin in the brain. Its Val66Met polymorphism (refSNP Cluster Report: rs6265) is a common and functional single-nucleotide polymorphism (SNP) affecting the activity-dependent release of BDNF. BDNF Val66Met transgenic mice have been generated, which may provide further insight into the functional impact of this polymorphism in the brain. Considering the important role of BDNF in brain function, more than 1,100 genetic studies have investigated this polymorphism in the past 15 years. Although these studies have reported some encouraging positive findings initially, most of the findings cannot be replicated in following studies. These inconsistencies in BDNF Val66Met genetic studies may be attributed to many factors such as age, sex, environmental factors, ethnicity, genetic model used for analysis, and gene–gene interaction, which are discussed in this review. We also discuss the results of recent studies that have reported the novel functions of this polymorphism. Because many BDNF polymorphisms and non-genetic factors have been implicated in the complex traits of neuropsychiatric diseases, the conventional genetic association-based method is limited to address these complex interactions. Future studies should apply data mining and machine learning techniques to determine the genetic role of BDNF in neuropsychiatric diseases.
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Affiliation(s)
- Shih-Jen Tsai
- Department of Psychiatry, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Medicine, National Yang-Ming University, Taipei, Taiwan.,Institute of Brain Science, National Yang-Ming University, Taipei, Taiwan
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Grubač Ž, Jovanović Đ, Puškaš N, Hrnčić D. Sleep disturbances and depression: Directions and mechanisms of interaction. MEDICINSKI PODMLADAK 2018. [DOI: 10.5937/mp69-18434] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
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Géral C, Angelova A, Lesieur S. From molecular to nanotechnology strategies for delivery of neurotrophins: emphasis on brain-derived neurotrophic factor (BDNF). Pharmaceutics 2013; 5:127-67. [PMID: 24300402 PMCID: PMC3834942 DOI: 10.3390/pharmaceutics5010127] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 01/30/2013] [Accepted: 02/05/2013] [Indexed: 01/01/2023] Open
Abstract
Neurodegenerative diseases represent a major public health problem, but beneficial clinical treatment with neurotrophic factors has not been established yet. The therapeutic use of neurotrophins has been restrained by their instability and rapid degradation in biological medium. A variety of strategies has been proposed for the administration of these leading therapeutic candidates, which are essential for the development, survival and function of human neurons. In this review, we describe the existing approaches for delivery of brain-derived neurotrophic factor (BDNF), which is the most abundant neurotrophin in the mammalian central nervous system (CNS). Biomimetic peptides of BDNF have emerged as a promising therapy against neurodegenerative disorders. Polymer-based carriers have provided sustained neurotrophin delivery, whereas lipid-based particles have contributed also to potentiation of the BDNF action. Nanotechnology offers new possibilities for the design of vehicles for neuroprotection and neuroregeneration. Recent developments in nanoscale carriers for encapsulation and transport of BDNF are highlighted.
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Affiliation(s)
- Claire Géral
- CNRS UMR8612 Institut Galien Paris-Sud, 5 rue J.-B. Clément, F-92296 Châtenay-Malabry, France; E-Mails: (C.G.); (S.L.)
- Univ Paris Sud 11, 5 rue J.-B. Clément, F-92296 Châtenay-Malabry, France
| | - Angelina Angelova
- CNRS UMR8612 Institut Galien Paris-Sud, 5 rue J.-B. Clément, F-92296 Châtenay-Malabry, France; E-Mails: (C.G.); (S.L.)
- Univ Paris Sud 11, 5 rue J.-B. Clément, F-92296 Châtenay-Malabry, France
| | - Sylviane Lesieur
- CNRS UMR8612 Institut Galien Paris-Sud, 5 rue J.-B. Clément, F-92296 Châtenay-Malabry, France; E-Mails: (C.G.); (S.L.)
- Univ Paris Sud 11, 5 rue J.-B. Clément, F-92296 Châtenay-Malabry, France
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Cardenas-Aguayo MDC, Kazim SF, Grundke-Iqbal I, Iqbal K. Neurogenic and neurotrophic effects of BDNF peptides in mouse hippocampal primary neuronal cell cultures. PLoS One 2013; 8:e53596. [PMID: 23320097 PMCID: PMC3539976 DOI: 10.1371/journal.pone.0053596] [Citation(s) in RCA: 47] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2012] [Accepted: 11/30/2012] [Indexed: 12/11/2022] Open
Abstract
The level of brain-derived neurotrophic factor (BDNF), a member of the neurotrophin family, is down regulated in Alzheimer’s disease (AD), Parkinson’s disease (PD), depression, stress, and anxiety; conversely the level of this neurotrophin is increased in autism spectrum disorders. Thus, modulating the level of BDNF can be a potential therapeutic approach for nervous system pathologies. In the present study, we designed five different tetra peptides (peptides B-1 to B-5) corresponding to different active regions of BDNF. These tetra peptides were found to be non-toxic, and they induced the expression of neuronal markers in mouse embryonic day 18 (E18) primary hippocampal neuronal cultures. Additionally, peptide B-5 induced the expression of BDNF and its receptor, TrkB, suggesting a positive feedback mechanism. The BDNF peptides induced only a moderate activation (phosphorylation at Tyr 706) of the TrkB receptor, which could be blocked by the Trk’s inhibitor, K252a. Peptide B-3, when combined with BDNF, potentiated the survival effect of this neurotrophin on H2O2-treated E18 hippocampal cells. Peptides B-3 and B-5 were found to work as partial agonists and as partial antagonists competing with BDNF to activate the TrkB receptor in a dose-dependent manner. Taken together, these results suggest that the described BDNF tetra peptides are neurotrophic, can modulate BDNF signaling in a partial agonist/antagonist way, and offer a novel therapeutic approach to neural pathologies where BDNF levels are dysregulated.
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Affiliation(s)
- Maria del Carmen Cardenas-Aguayo
- Department of Neurochemistry, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, New York, United States of America
| | - Syed Faraz Kazim
- Department of Neurochemistry, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, New York, United States of America
- Neural and Behavioral Science Graduate Program, State University of New York Downstate Medical Center, Brooklyn, New York, United States of America
| | - Inge Grundke-Iqbal
- Department of Neurochemistry, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, New York, United States of America
| | - Khalid Iqbal
- Department of Neurochemistry, New York State Institute for Basic Research in Developmental Disabilities, Staten Island, New York, United States of America
- * E-mail:
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Huang YZ, Hernandez FJ, Gu B, Stockdale KR, Nanapaneni K, Scheetz TE, Behlke MA, Peek AS, Bair T, Giangrande PH, McNamara JO. RNA aptamer-based functional ligands of the neurotrophin receptor, TrkB. Mol Pharmacol 2012; 82:623-35. [PMID: 22752556 DOI: 10.1124/mol.112.078220] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Many cell surface signaling receptors, such as the neurotrophin receptor, TrkB, have emerged as potential therapeutic targets for diverse diseases. Reduced activation of TrkB in particular is thought to contribute to neurodegenerative diseases. Unfortunately, development of therapeutic reagents that selectively activate particular cell surface receptors such as TrkB has proven challenging. Like many cell surface signaling receptors, TrkB is internalized upon activation; in this proof-of-concept study, we exploited this fact to isolate a pool of nuclease-stabilized RNA aptamers enriched for TrkB agonists. One of the selected aptamers, C4-3, was characterized with recombinant protein-binding assays, cell-based signaling and functional assays, and, in vivo in a seizure model in mice. C4-3 binds the extracellular domain of TrkB with high affinity (K(D) ∼2 nM) and exhibits potent TrkB partial agonistic activity and neuroprotective effects in cultured cortical neurons. In mice, C4-3 activates TrkB upon infusion into the hippocampus; systemic administration of C4-3 potentiates kainic acid-induced seizure development. We conclude that C4-3 is a potentially useful therapeutic agent for neurodegenerative diseases in which reduced TrkB activation has been implicated. We anticipate that the cell-based aptamer selection approach used here will be broadly applicable to the identification of aptamer-based agonists for a variety of cell-surface signaling receptors.
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Affiliation(s)
- Yang Zhong Huang
- Department of Neurobiology, Duke University Medical Center, Duke University, Durham, North Carolina, USA
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Park SW, Phuong VT, Lee CH, Lee JG, Seo MK, Cho HY, Fang ZH, Lee BJ, Kim YH. Effects of antipsychotic drugs on BDNF, GSK-3β, and β-catenin expression in rats subjected to immobilization stress. Neurosci Res 2011; 71:335-40. [DOI: 10.1016/j.neures.2011.08.010] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2011] [Revised: 08/09/2011] [Accepted: 08/12/2011] [Indexed: 10/17/2022]
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Park SW, Seo MK, Cho HY, Goo Lee J, Ju Lee B, Seol W, Kim YH. Differential effects of amisulpride and haloperidol on dopamine D2 receptor-mediated signaling in SH-SY5Y cells. Neuropharmacology 2011; 61:761-9. [DOI: 10.1016/j.neuropharm.2011.05.022] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2010] [Revised: 05/12/2011] [Accepted: 05/17/2011] [Indexed: 10/18/2022]
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Abstract
Autism spectrum disorders (ASDs) are pervasive developmental disorders that frequently involve a triad of deficits in social skills, communication and language. For the underlying neurobiology of these symptoms, disturbances in neuronal development and synaptic plasticity have been discussed. The physiological development, regulation and survival of specific neuronal populations shaping neuronal plasticity require the so-called 'neurotrophic factors' (NTFs). These regulate cellular proliferation, migration, differentiation and integrity, which are also affected in ASD. Therefore, NTFs have gained increasing attention in ASD research. This review provides an overview and explores the key role of NTFs in the aetiology of ASD. We have also included evidence derived from neurochemical investigations, gene association studies and animal models. By focussing on the role of NTFs in ASD, we intend to further elucidate the puzzling aetiology of these conditions.
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Affiliation(s)
- T Nickl-Jockschat
- Department of Psychiatry and Psychotherapy, RWTH Aachen University, Aachen, Germany
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Jun SB, Hynd MR, Dowell-Mesfin NM, Al-Kofahi Y, Roysam B, Shain W, Kim SJ. Modulation of cultured neural networks using neurotrophin release from hydrogel-coated microelectrode arrays. J Neural Eng 2008; 5:203-13. [PMID: 18477815 DOI: 10.1088/1741-2560/5/2/011] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Polyacrylamide and poly(ethylene glycol) diacrylate hydrogels were synthesized and characterized for use as drug release and substrates for neuron cell culture. Protein release kinetics was determined by incorporating bovine serum albumin (BSA) into hydrogels during polymerization. To determine if hydrogel incorporation and release affect bioactivity, alkaline phosphatase was incorporated into hydrogels and a released enzyme activity determined using the fluorescence-based ELF-97 assay. Hydrogels were then used to deliver a brain-derived neurotrophic factor (BDNF) from hydrogels polymerized over planar microelectrode arrays (MEAs). Primary hippocampal neurons were cultured on both control and neurotrophin-containing hydrogel-coated MEAs. The effect of released BDNF on neurite length and process arborization was investigated using automated image analysis. An increased spontaneous activity as a response to the released BDNF was recorded from the neurons cultured on the top of hydrogel layers. These results demonstrate that proteins of biological interest can be incorporated into hydrogels to modulate development and function of cultured neural networks. These results also set the stage for development of hydrogel-coated neural prosthetic devices for local delivery of various biologically active molecules.
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Affiliation(s)
- Sang Beom Jun
- Nano-Bioelectronics and Systems Research Center, Seoul, Korea
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Tsai SJ. Attention-deficit hyperactivity disorder may be associated with decreased central brain-derived neurotrophic factor activity: Clinical and therapeutic implications. Med Hypotheses 2007; 68:896-9. [PMID: 16919891 DOI: 10.1016/j.mehy.2006.06.025] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2006] [Accepted: 06/19/2006] [Indexed: 11/16/2022]
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