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Horvat A, Vlašić I, Štefulj J, Oršolić N, Jazvinšćak Jembrek M. Flavonols as a Potential Pharmacological Intervention for Alleviating Cognitive Decline in Diabetes: Evidence from Preclinical Studies. Life (Basel) 2023; 13:2291. [PMID: 38137892 PMCID: PMC10744738 DOI: 10.3390/life13122291] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2023] [Revised: 11/15/2023] [Accepted: 11/24/2023] [Indexed: 12/24/2023] Open
Abstract
Diabetes mellitus is a complex metabolic disease associated with reduced synaptic plasticity, atrophy of the hippocampus, and cognitive decline. Cognitive impairment results from several pathological mechanisms, including increased levels of advanced glycation end products (AGEs) and their receptors, prolonged oxidative stress and impaired activity of endogenous mechanisms of antioxidant defense, neuroinflammation driven by the nuclear factor kappa-light-chain enhancer of activated B cells (NF-κB), decreased expression of brain-derived neurotrophic factor (BDNF), and disturbance of signaling pathways involved in neuronal survival and cognitive functioning. There is increasing evidence that dietary interventions can reduce the risk of various diabetic complications. In this context, flavonols, a highly abundant class of flavonoids in the human diet, are appreciated as a potential pharmacological intervention against cognitive decline in diabetes. In preclinical studies, flavonols have shown neuroprotective, antioxidative, anti-inflammatory, and memory-enhancing properties based on their ability to regulate glucose levels, attenuate oxidative stress and inflammation, promote the expression of neurotrophic factors, and regulate signaling pathways. The present review gives an overview of the molecular mechanisms involved in diabetes-induced cognitive dysfunctions and the results of preclinical studies showing that flavonols have the ability to alleviate cognitive impairment. Although the results from animal studies are promising, clinical and epidemiological studies are still needed to advance our knowledge on the potential of flavonols to improve cognitive decline in diabetic patients.
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Affiliation(s)
- Anđela Horvat
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
| | - Ignacija Vlašić
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
| | - Jasminka Štefulj
- Division of Molecular Biology, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
- Department of Psychology, Catholic University of Croatia, Ilica 242, 10000 Zagreb, Croatia
| | - Nada Oršolić
- Division of Animal Physiology, Faculty of Science, University of Zagreb, Rooseveltov trg 6, 10000 Zagreb, Croatia
| | - Maja Jazvinšćak Jembrek
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička 54, 10000 Zagreb, Croatia
- Department of Psychology, Catholic University of Croatia, Ilica 242, 10000 Zagreb, Croatia
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2
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Ma H, Khaled HG, Wang X, Mandelberg NJ, Cohen SM, He X, Tsien RW. Excitation-transcription coupling, neuronal gene expression and synaptic plasticity. Nat Rev Neurosci 2023; 24:672-692. [PMID: 37773070 DOI: 10.1038/s41583-023-00742-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/24/2023] [Indexed: 09/30/2023]
Abstract
Excitation-transcription coupling (E-TC) links synaptic and cellular activity to nuclear gene transcription. It is generally accepted that E-TC makes a crucial contribution to learning and memory through its role in underpinning long-lasting synaptic enhancement in late-phase long-term potentiation and has more recently been linked to late-phase long-term depression: both processes require de novo gene transcription, mRNA translation and protein synthesis. E-TC begins with the activation of glutamate-gated N-methyl-D-aspartate-type receptors and voltage-gated L-type Ca2+ channels at the membrane and culminates in the activation of transcription factors in the nucleus. These receptors and ion channels mediate E-TC through mechanisms that include long-range signalling from the synapse to the nucleus and local interactions within dendritic spines, among other possibilities. Growing experimental evidence links these E-TC mechanisms to late-phase long-term potentiation and learning and memory. These advances in our understanding of the molecular mechanisms of E-TC mean that future efforts can focus on understanding its mesoscale functions and how it regulates neuronal network activity and behaviour in physiological and pathological conditions.
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Affiliation(s)
- Huan Ma
- Department of Neurobiology, Affiliated Mental Health Center and Hangzhou Seventh People's Hospital, Zhejiang University School of Medicine, Hangzhou, China.
- Liangzhu Laboratory, MOE Frontier Science Center for Brain Science and Brain-Machine Integration, State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, Hangzhou, China.
- NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University, Hangzhou, China.
- Research Units for Emotion and Emotional Disorders, Chinese Academy of Medical Sciences, Beijing, China.
| | - Houda G Khaled
- NYU Neuroscience Institute and Department of Neuroscience and Physiology, NYU Langone Medical Center, New York, NY, USA
- Center for Neural Science, New York University, New York, NY, USA
| | - Xiaohan Wang
- NYU Neuroscience Institute and Department of Neuroscience and Physiology, NYU Langone Medical Center, New York, NY, USA
| | - Nataniel J Mandelberg
- NYU Neuroscience Institute and Department of Neuroscience and Physiology, NYU Langone Medical Center, New York, NY, USA
| | - Samuel M Cohen
- NYU Neuroscience Institute and Department of Neuroscience and Physiology, NYU Langone Medical Center, New York, NY, USA
| | - Xingzhi He
- Department of Neurobiology, Affiliated Mental Health Center and Hangzhou Seventh People's Hospital, Zhejiang University School of Medicine, Hangzhou, China
- Liangzhu Laboratory, MOE Frontier Science Center for Brain Science and Brain-Machine Integration, State Key Laboratory of Brain-Machine Intelligence, Zhejiang University, Hangzhou, China
- NHC and CAMS Key Laboratory of Medical Neurobiology, Zhejiang University, Hangzhou, China
- Research Units for Emotion and Emotional Disorders, Chinese Academy of Medical Sciences, Beijing, China
| | - Richard W Tsien
- NYU Neuroscience Institute and Department of Neuroscience and Physiology, NYU Langone Medical Center, New York, NY, USA.
- Center for Neural Science, New York University, New York, NY, USA.
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Ge X, Yao T, Zhang C, Wang Q, Wang X, Xu LC. Human microRNA-4433 (hsa-miR-4443) Targets 18 Genes to be a Risk Factor of Neurodegenerative Diseases. Curr Alzheimer Res 2022; 19:511-522. [PMID: 35929619 PMCID: PMC9906632 DOI: 10.2174/1567205019666220805120303] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 06/21/2022] [Accepted: 06/22/2022] [Indexed: 01/27/2023]
Abstract
BACKGROUND Neurodegenerative diseases, such as Alzheimer's disease patients (AD), Huntington's disease (HD) and Parkinson's disease (PD), are common causes of morbidity, mortality, and cognitive impairment in older adults. OBJECTIVE We aimed to understand the transcriptome characteristics of the cortex of neurodegenerative diseases and to provide an insight into the target genes of differently expressed microRNAs in the occurrence and development of neurodegenerative diseases. METHODS The Limma package of R software was used to analyze GSE33000, GSE157239, GSE64977 and GSE72962 datasets to identify the differentially expressed genes (DEGs) and microRNAs in the cortex of neurodegenerative diseases. Bioinformatics methods, such as GO enrichment analysis, KEGG enrichment analysis and gene interaction network analysis, were used to explore the biological functions of DEGs. Weighted gene co-expression network analysis (WGCNA) was used to cluster DEGs into modules. RNA22, miRDB, miRNet 2.0 and TargetScan7 databases were performed to predict the target genes of microRNAs. RESULTS Among 310 Alzheimer's disease (AD) patients, 157 Huntington's disease (HD) patients and 157 non-demented control (Con) individuals, 214 co-DEGs were identified. Those co-DEGs were filtered into 2 different interaction network complexes, representing immune-related genes and synapserelated genes. The WGCNA results identified five modules: yellow, blue, green, turquoise, and brown. Most of the co-DEGs were clustered into the turquoise module and blue module, which respectively regulated synapse-related function and immune-related function. In addition, human microRNA-4433 (hsa-miR-4443), which targets 18 co-DEGs, was the only 1 co-up-regulated microRNA identified in the cortex of neurodegenerative diseases. CONCLUSION 214 DEGs and 5 modules regulate the immune-related and synapse-related function of the cortex in neurodegenerative diseases. Hsa-miR-4443 targets 18 co-DEGs and may be a potential molecular mechanism in neurodegenerative diseases' occurrence and development.
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Affiliation(s)
- Xing Ge
- Department of Pathogen Biology and Immunology, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China;
| | - Tingting Yao
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China;
| | - Chaoran Zhang
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China;
| | - Qingqing Wang
- Department of Nephrology, Xuzhou Children’s Hospital, Xuzhou, Jiangsu 221000, China
| | - Xuxu Wang
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China;
| | - Li-Chun Xu
- School of Public Health, Xuzhou Medical University, Xuzhou, Jiangsu 221002, China; ,Address correspondence to this author at the School of Public Health, Xuzhou Medical University, Xuzhou, 209 Tong-Shan Road, Xuzhou, Jiangsu, 221002, China; Tel: +86-516-83262650; Fax: +86-516-83262650; E-mail:
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4
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Gupta S, Guleria RS. Involvement of Nuclear Factor-κB in Inflammation and Neuronal Plasticity Associated with Post-Traumatic Stress Disorder. Cells 2022; 11:cells11132034. [PMID: 35805118 PMCID: PMC9265339 DOI: 10.3390/cells11132034] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Revised: 06/17/2022] [Accepted: 06/18/2022] [Indexed: 11/29/2022] Open
Abstract
Post-traumatic stress disorder (PTSD) is a debilitating psychiatric condition which develops either due to stress or witnessing a traumatic situation. PTSD is characterized by acute and chronic stress response exhibit anxiety, fear, and an increased inflammatory etiology. Inflammation contributes a critical role in several parts of the brain that control fear and flashback cognatic function. It is known that impairment of the neurological circuit leads to the development of PTSD. Evidence has suggested that dysregulation of the sympathetic nervous system and hypothalamic-pituitary adrenal (HPA) axis and inflammatory responsiveness are pivotal and a greater risk in PTSD. NF-κB, a master regulator for inflammation, has been showed to modulate memory reconsolidation and synaptic plasticity; however, NF-κB’s association with PTSD remain elusive. In this review, we provide relevant findings regarding NF-κB activity in various components of brain and describe a potential mechanism linking PTSD using preclinical and clinical models. We envisage NF-κB signaling as a crucial mediator for inflammation, cognitive function, memory restoration and behavioral actions of stress and suggest that it could be used for therapeutic intervention in PTSD.
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Rodriguez Ospina S, Blazier DM, Criado-Marrero M, Gould LA, Gebru NT, Beaulieu-Abdelahad D, Wang X, Remily-Wood E, Chaput D, Stevens S, Uversky VN, Bickford PC, Dickey CA, Blair LJ. Small Heat Shock Protein 22 Improves Cognition and Learning in the Tauopathic Brain. Int J Mol Sci 2022; 23:ijms23020851. [PMID: 35055033 PMCID: PMC8775832 DOI: 10.3390/ijms23020851] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 01/05/2022] [Accepted: 01/10/2022] [Indexed: 02/04/2023] Open
Abstract
The microtubule-associated protein tau pathologically accumulates and aggregates in Alzheimer's disease (AD) and other tauopathies, leading to cognitive dysfunction and neuronal loss. Molecular chaperones, like small heat-shock proteins (sHsps), can help deter the accumulation of misfolded proteins, such as tau. Here, we tested the hypothesis that the overexpression of wild-type Hsp22 (wtHsp22) and its phosphomimetic (S24,57D) Hsp22 mutant (mtHsp22) could slow tau accumulation and preserve memory in a murine model of tauopathy, rTg4510. Our results show that Hsp22 protected against deficits in synaptic plasticity and cognition in the tauopathic brain. However, we did not detect a significant change in tau phosphorylation or levels in these mice. This led us to hypothesize that the functional benefit was realized through the restoration of dysfunctional pathways in hippocampi of tau transgenic mice since no significant benefit was measured in non-transgenic mice expressing wtHsp22 or mtHsp22. To identify these pathways, we performed mass spectrometry of tissue lysates from the injection site. Overall, our data reveal that Hsp22 overexpression in neurons promotes synaptic plasticity by regulating canonical pathways and upstream regulators that have been characterized as potential AD markers and synaptogenesis regulators, like EIF4E and NFKBIA.
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Affiliation(s)
- Santiago Rodriguez Ospina
- USF Health Byrd Alzheimer’s Institute, University of South Florida, Tampa, FL 33613, USA; (S.R.O.); (D.M.B.); (M.C.-M.); (L.A.G.); (N.T.G.); (D.B.-A.); (X.W.); (V.N.U.)
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA;
| | - Danielle M. Blazier
- USF Health Byrd Alzheimer’s Institute, University of South Florida, Tampa, FL 33613, USA; (S.R.O.); (D.M.B.); (M.C.-M.); (L.A.G.); (N.T.G.); (D.B.-A.); (X.W.); (V.N.U.)
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA;
| | - Marangelie Criado-Marrero
- USF Health Byrd Alzheimer’s Institute, University of South Florida, Tampa, FL 33613, USA; (S.R.O.); (D.M.B.); (M.C.-M.); (L.A.G.); (N.T.G.); (D.B.-A.); (X.W.); (V.N.U.)
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA;
| | - Lauren A. Gould
- USF Health Byrd Alzheimer’s Institute, University of South Florida, Tampa, FL 33613, USA; (S.R.O.); (D.M.B.); (M.C.-M.); (L.A.G.); (N.T.G.); (D.B.-A.); (X.W.); (V.N.U.)
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA;
| | - Niat T. Gebru
- USF Health Byrd Alzheimer’s Institute, University of South Florida, Tampa, FL 33613, USA; (S.R.O.); (D.M.B.); (M.C.-M.); (L.A.G.); (N.T.G.); (D.B.-A.); (X.W.); (V.N.U.)
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA;
| | - David Beaulieu-Abdelahad
- USF Health Byrd Alzheimer’s Institute, University of South Florida, Tampa, FL 33613, USA; (S.R.O.); (D.M.B.); (M.C.-M.); (L.A.G.); (N.T.G.); (D.B.-A.); (X.W.); (V.N.U.)
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA;
| | - Xinming Wang
- USF Health Byrd Alzheimer’s Institute, University of South Florida, Tampa, FL 33613, USA; (S.R.O.); (D.M.B.); (M.C.-M.); (L.A.G.); (N.T.G.); (D.B.-A.); (X.W.); (V.N.U.)
- Department of Molecular Pharmacology and Physiology, University of South Florida, Tampa, FL 33612, USA;
| | - Elizabeth Remily-Wood
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA;
| | - Dale Chaput
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL 33620, USA; (D.C.); (S.S.Jr.)
| | - Stanley Stevens
- Department of Cell Biology, Microbiology and Molecular Biology, University of South Florida, Tampa, FL 33620, USA; (D.C.); (S.S.Jr.)
| | - Vladimir N. Uversky
- USF Health Byrd Alzheimer’s Institute, University of South Florida, Tampa, FL 33613, USA; (S.R.O.); (D.M.B.); (M.C.-M.); (L.A.G.); (N.T.G.); (D.B.-A.); (X.W.); (V.N.U.)
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA;
- Center for Molecular Mechanisms of Aging and Age-Related Diseases, Moscow Institute of Physics and Technology, Institutskiy Pereulok, 9, 141700 Dolgoprudny, Russia
| | - Paula C. Bickford
- Department of Molecular Pharmacology and Physiology, University of South Florida, Tampa, FL 33612, USA;
- Research Service, James A. Haley Veterans’ Hospital, Tampa, FL 33620, USA
- Department of Neurosurgery and Brain Repair, University of South Florida, Tampa, FL 33613, USA
| | - Chad A. Dickey
- USF Health Byrd Alzheimer’s Institute, University of South Florida, Tampa, FL 33613, USA; (S.R.O.); (D.M.B.); (M.C.-M.); (L.A.G.); (N.T.G.); (D.B.-A.); (X.W.); (V.N.U.)
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA;
| | - Laura J. Blair
- USF Health Byrd Alzheimer’s Institute, University of South Florida, Tampa, FL 33613, USA; (S.R.O.); (D.M.B.); (M.C.-M.); (L.A.G.); (N.T.G.); (D.B.-A.); (X.W.); (V.N.U.)
- Department of Molecular Medicine, University of South Florida, Tampa, FL 33612, USA;
- Research Service, James A. Haley Veterans’ Hospital, Tampa, FL 33620, USA
- Correspondence: ; Tel.: +1-813-369-0639
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Källstig E, McCabe BD, Schneider BL. The Links between ALS and NF-κB. Int J Mol Sci 2021; 22:3875. [PMID: 33918092 PMCID: PMC8070122 DOI: 10.3390/ijms22083875] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Revised: 04/06/2021] [Accepted: 04/06/2021] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disease wherein motor neuron degeneration leads to muscle weakness, progressive paralysis, and death within 3-5 years of diagnosis. Currently, the cause of ALS is unknown but, as with several neurodegenerative diseases, the potential role of neuroinflammation has become an increasingly popular hypothesis in ALS research. Indeed, upregulation of neuroinflammatory factors have been observed in both ALS patients and animal models. One such factor is the inflammatory inducer NF-κB. Besides its connection to inflammation, NF-κB activity can be linked to several genes associated to familial forms of ALS, and many of the environmental risk factors of the disease stimulate NF-κB activation. Collectively, this has led many to hypothesize that NF-κB proteins may play a role in ALS pathogenesis. In this review, we discuss the genetic and environmental connections between NF-κB and ALS, as well as how this pathway may affect different CNS cell types, and finally how this may lead to motor neuron degeneration.
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Affiliation(s)
| | | | - Bernard L. Schneider
- Brain Mind Institute, Ecole Polytechnique Fédérale de Lausanne (EPFL), Station 19, 1015 Lausanne, Switzerland; (E.K.); (B.D.M.)
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Alashmali S, Walchuk C, Cadonic C, Albensi BC, Aliani M, Suh M. The effect of choline availability from gestation to early development on brain and retina functions and phospholipid composition in a male mouse model. Nutr Neurosci 2021; 25:1594-1608. [PMID: 33641632 DOI: 10.1080/1028415x.2021.1885229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
OBJECTIVES Although choline is essential for brain development and neural function, the effect of choline on retina function is not well understood. This study examined the effects of choline on neural tissues of brain and retina, and membrane phospholipid (PL) composition during fetal development. METHODS Pregnant C57BL/6 mice were fed one of 4 choline modified diets: i) control (Cont, 2.5g/kg), ii) choline deficient (Def, 0g/kg), iii) supplemented with choline chloride (Cho, 10g/kg) and iv) supplemented with egg phosphatidylcholine (PC, 10g/kg). At postnatal day (PD) 21, pups were weaned onto their mothers' respective diets until PD 45. Spatial memory was measured using the Morris Water Maze; retina function by electroretinogram (ERG); and PL composition with nuclear magnetic resonance spectroscopy. RESULTS Cho and PC supplementation enhanced cued learning and spatial memory abilities, respectively (p Def > PC > Cho, with no statistically significant alterations in cone-driven responses. There were no differences in the composition of major PLs in the brain and retina. In the brain, subclasses of ether PL, alkyl acyl- phosphatidylethanolamine (PEaa) and phosphatidylcholine (PCaa) were significantly greater among the PC supplemented group in comparison to the Def group. DISCUSSION These results indicate that while choline supplementation during gestation to an early developmental period is beneficial for spatial memory, contributions to retina function are minor. Assessment with a larger sample size of retinas could warrant the essentiality of choline for retina development.
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Affiliation(s)
- Shoug Alashmali
- Department of Clinical Nutrition, Faculty of Applied Medical Sciences, King Abdul Aziz University, Jeddah, Saudi Arabia.,Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Canada.,Division of Neurodegenerative Disorders, Department of Food and Human Nutritional Sciences, St. Boniface Hospital Research Centre, Winnipeg, Canada
| | - Chelsey Walchuk
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Canada.,Division of Neurodegenerative Disorders, Department of Food and Human Nutritional Sciences, St. Boniface Hospital Research Centre, Winnipeg, Canada.,Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research, Winnipeg, Canada
| | - Chris Cadonic
- Department of Pharmacology & Therapeutics, University of Manitoba, Winnipeg, Canada.,Division of Neurodegenerative Disorders, Department of Food and Human Nutritional Sciences, St. Boniface Hospital Research Centre, Winnipeg, Canada
| | - Benedict C Albensi
- Department of Pharmacology & Therapeutics, University of Manitoba, Winnipeg, Canada.,Division of Neurodegenerative Disorders, Department of Food and Human Nutritional Sciences, St. Boniface Hospital Research Centre, Winnipeg, Canada
| | - Michel Aliani
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Canada.,Division of Neurodegenerative Disorders, Department of Food and Human Nutritional Sciences, St. Boniface Hospital Research Centre, Winnipeg, Canada.,Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research, Winnipeg, Canada
| | - Miyoung Suh
- Department of Food and Human Nutritional Sciences, University of Manitoba, Winnipeg, Canada.,Division of Neurodegenerative Disorders, Department of Food and Human Nutritional Sciences, St. Boniface Hospital Research Centre, Winnipeg, Canada.,Canadian Centre for Agri-Food Research in Health and Medicine, St. Boniface Hospital Research, Winnipeg, Canada
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8
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Yang X, Li F, Liu Y, Li D, Li J. Study on the Correlation Between NF-κB and Central Fatigue. J Mol Neurosci 2021; 71:1975-1986. [PMID: 33586033 PMCID: PMC8500872 DOI: 10.1007/s12031-021-01803-z] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Accepted: 01/26/2021] [Indexed: 12/25/2022]
Abstract
In recent years, the World Health Organization (WHO) has included fatigue as a major risk factor for human life and health. The incidence rate of fatigue is high. In Europe and America, nearly 1/3 of the population is suffering from fatigue. Due to the acceleration of modern people’s life rhythm and the increase of work pressure, more and more attention has been paid to central fatigue. The activation of NF-κB is related to central fatigue, which has been paid little attention by previous studies. At the same time, previous studies have mostly focused on the immune regulation function of NF-κB, while the NF-κB pathway plays an equally important role in regulating nerve function. NF-κB can participate in the occurrence and development of central fatigue by mediating immune inflammatory response, regulating central excitability and inhibitory transmitters, regulating synaptic plasticity and regulating central nervous system (CNS) functional genes. In addition to neuroprotective effects, NF-κB also has nerve damage effects, which is also closely related to the occurrence and development of central fatigue. In this review, we focus on the relationship between NF-κB pathway and central fatigue and further explore the biological mechanism of central fatigue. At the same time, the clinical application and potential of typical NF-κB inhibitors in the treatment of fatigue were analyzed to provide reference for the clinical treatment of central fatigue.
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Affiliation(s)
- Xingzhe Yang
- College of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Feng Li
- College of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China.
| | - Yan Liu
- College of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Danxi Li
- College of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Jie Li
- College of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
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Liu X, Wang K, Wei X, Xie T, Lv B, Zhou Q, Wang X. Interaction of NF-κB and Wnt/β-catenin Signaling Pathways in Alzheimer's Disease and Potential Active Drug Treatments. Neurochem Res 2021; 46:711-731. [PMID: 33523396 DOI: 10.1007/s11064-021-03227-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2020] [Revised: 11/24/2020] [Accepted: 01/02/2021] [Indexed: 12/25/2022]
Abstract
The most important neuropathological features of Alzheimer's disease (AD) are extracellular amyloid-β protein (Aβ) deposition, tau protein hyperphosphorylation and activation of neurometabolic reaction in the brain accompanied by neuronal and synaptic damage, and impaired learning and memory function. According to the amyloid cascade hypothesis, increased Aβ deposits in the brain to form the core of the senile plaques that initiate cascade reactions, affecting the synapses and stimulating activation of microglia, resulting in neuroinflammation. A growing number of studies has shown that NF-κB and Wnt/β-catenin pathways play important roles in neurodegenerative diseases, especially AD. In this review, we briefly introduce the connection between neuroinflammation-mediated synaptic dysfunction in AD and elaborated on the mechanism of these two signaling pathways in AD-related pathological changes, as well as their interaction. Based on our interest in natural compounds, we also briefly introduce and conduct preliminary screening of potential therapeutics for AD.
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Affiliation(s)
- Xiao Liu
- State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Kaiyue Wang
- State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Xing Wei
- State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Tian Xie
- State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Bin Lv
- State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China
| | - Qian Zhou
- Department of Anatomy, School of Medicine, University of Occupational and Environmental Health, 1-1 Iseigaoka, Yahatanishiku, Kitakyushu, 807-8555, Japan
| | - Xiaoying Wang
- State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China. .,College of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, 301617, China.
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10
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Michael H, Mpofana T, Ramlall S, Oosthuizen F. The Role of Brain Derived Neurotrophic Factor in HIV-Associated Neurocognitive Disorder: From the Bench-Top to the Bedside. Neuropsychiatr Dis Treat 2020; 16:355-367. [PMID: 32099373 PMCID: PMC6999762 DOI: 10.2147/ndt.s232836] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2019] [Accepted: 11/21/2019] [Indexed: 12/11/2022] Open
Abstract
Human immunodeficiency virus (HIV)-associated neurocognitive disorder (HAND) remains prevalent in the anti-retroviral (ART) era. While there is a complex interplay of many factors in the neuropathogenesis of HAND, decreased neurotrophic synthesis has been shown to contribute to synaptic degeneration which is a hallmark of HAND neuropathology. Brain derived neurotrophic factor (BDNF) is the most abundant and synaptic-promoting neurotrophic factor in the brain and plays a critical role in both learning and memory. Reduced BDNF levels can worsen neurocognitive impairment in HIV-positive individuals across several domains. In this paper, we review the evidence from pre-clinical and clinical studies showing the neuroprotective roles of BDNF against viral proteins, effect on co-morbid mental health disorders, altered human microbiome and ART in HAND management. Potential applications of BDNF modulation in pharmacotherapeutic, cognitive and behavioral interventions in HAND are also discussed. Finally, research gaps and future research direction are identified with the aim of helping researchers to direct efforts to make these BDNF driven interventions improve the quality of life of patients living with HAND.
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Affiliation(s)
- Henry Michael
- Discipline of Pharmaceutical Sciences, School of Health Science, University of KwaZulu-Natal, Durban, South Africa
| | - Thabisile Mpofana
- School of Laboratory Medicine and Medical Sciences, University of KwaZulu-Natal, Durban, South Africa
| | - Suvira Ramlall
- Department of Psychiatry, University of KwaZulu-Natal, Durban, South Africa
| | - Frasia Oosthuizen
- Discipline of Pharmaceutical Sciences, School of Health Science, University of KwaZulu-Natal, Durban, South Africa
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11
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Navabpour S, Kwapis JL, Jarome TJ. A neuroscientist's guide to transgenic mice and other genetic tools. Neurosci Biobehav Rev 2020; 108:732-748. [PMID: 31843544 PMCID: PMC8049509 DOI: 10.1016/j.neubiorev.2019.12.013] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 11/05/2019] [Accepted: 12/09/2019] [Indexed: 12/14/2022]
Abstract
The past decade has produced an explosion in the number and variety of genetic tools available to neuroscientists, resulting in an unprecedented ability to precisely manipulate the genome and epigenome in behaving animals. However, no single resource exists that describes all of the tools available to neuroscientists. Here, we review the genetic, transgenic, and viral techniques that are currently available to probe the complex relationship between genes and cognition. Topics covered include types of traditional transgenic mouse models (knockout, knock-in, reporter lines), inducible systems (Cre-loxP, Tet-On, Tet-Off) and cell- and circuit-specific systems (TetTag, TRAP, DIO-DREADD). Additionally, we provide details on virus-mediated and siRNA/shRNA approaches, as well as a comprehensive discussion of the myriad manipulations that can be made using the CRISPR-Cas9 system, including single base pair editing and spatially- and temporally-regulated gene-specific transcriptional control. Collectively, this review will serve as a guide to assist neuroscientists in identifying and choosing the appropriate genetic tools available to study the complex relationship between the brain and behavior.
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Affiliation(s)
- Shaghayegh Navabpour
- Fralin Biomedical Research Institute, Translational Biology, Medicine and Health, Roanoke, VA, USA
| | - Janine L Kwapis
- Department of Biology, Pennsylvania State University, College Park, PA, USA; Center for the Molecular Investigation of Neurological Disorders (CMIND), Pennsylvania State University, College Park, PA, USA.
| | - Timothy J Jarome
- Fralin Biomedical Research Institute, Translational Biology, Medicine and Health, Roanoke, VA, USA; Department of Animal and Poultry Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA; School of Neuroscience, Virginia Polytechnic Institute and State University, Blacksburg, VA, USA.
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12
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Dresselhaus EC, Meffert MK. Cellular Specificity of NF-κB Function in the Nervous System. Front Immunol 2019; 10:1043. [PMID: 31143184 PMCID: PMC6520659 DOI: 10.3389/fimmu.2019.01043] [Citation(s) in RCA: 190] [Impact Index Per Article: 38.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2018] [Accepted: 04/24/2019] [Indexed: 12/17/2022] Open
Abstract
Nuclear Factor Kappa B (NF-κB) is a ubiquitously expressed transcription factor with key functions in a wide array of biological systems. While the role of NF-κB in processes, such as host immunity and oncogenesis has been more clearly defined, an understanding of the basic functions of NF-κB in the nervous system has lagged behind. The vast cell-type heterogeneity within the central nervous system (CNS) and the interplay between cell-type specific roles of NF-κB contributes to the complexity of understanding NF-κB functions in the brain. In this review, we will focus on the emerging understanding of cell-autonomous regulation of NF-κB signaling as well as the non-cell-autonomous functional impacts of NF-κB activation in the mammalian nervous system. We will focus on recent work which is unlocking the pleiotropic roles of NF-κB in neurons and glial cells (including astrocytes and microglia). Normal physiology as well as disorders of the CNS in which NF-κB signaling has been implicated will be discussed with reference to the lens of cell-type specific responses.
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Affiliation(s)
- Erica C Dresselhaus
- Department of Biological Chemistry and Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, United States
| | - Mollie K Meffert
- Department of Biological Chemistry and Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD, United States
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13
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Kathpalia P, Nag TC, Chattopadhyay P, Sharma A, Bhat MA, Roy TS, Wadhwa S. In ovo Sound Stimulation Mediated Regulation of BDNF in the Auditory Cortex and Hippocampus of Neonatal Chicks. Neuroscience 2019; 408:293-307. [PMID: 31026564 DOI: 10.1016/j.neuroscience.2019.04.014] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Revised: 03/15/2019] [Accepted: 04/07/2019] [Indexed: 12/22/2022]
Abstract
Brain-derived neurotrophic factor (BDNF) is known to mediate activity-dependent changes in the developing auditory system. Its expression in the brainstem auditory nuclei, auditory cortex and hippocampus of neonatal chicks (Gallus gallus domesticus) in response to in ovo high intensity sound exposure at 110 dB (arrhythmic sound: recorded traffic noise, 30-3000 Hz with peak at 2700 Hz, rhythmic sound: sitar music, 100-4000 Hz) was examined to understand the previously reported altered volume and neuronal number in these regions. In the brainstem auditory nuclei, no mature BDNF, but proBDNF at the protein level was detected, and no change in its levels was observed after in ovo sound stimulation (music and noise). Increased ProBDNF protein levels were found in the auditory cortex in response to arrhythmic sound, along with decreased levels of one of the BDNF mRNA transcripts, in response to both rhythmic and arrhythmic sound stimulation. In the hippocampus, increased levels of mature BDNF were found in response to music. Expression microarray analysis was performed to understand changes in gene expression in the hippocampus in response to music and noise, followed by gene ontology analysis showing enrichment of probable signaling pathways. Differentially expressed genes like CAMK1 and STAT1 were found to be involved in downstream signaling on comparing music versus noise-exposed chicks. In conclusion, we report that BDNF is differentially regulated in the auditory cortex at the transcriptional and post-translational level, and in the hippocampus at the post-translational level in response to in ovo sound stimulation.
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Affiliation(s)
- Poorti Kathpalia
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - Tapas Chandra Nag
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India.
| | | | - Arundhati Sharma
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - Muzaffer Ahmed Bhat
- Department of Physiology, All India Institute of Medical Sciences, New Delhi, India
| | - Tara Sankar Roy
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India
| | - Shashi Wadhwa
- Department of Anatomy, All India Institute of Medical Sciences, New Delhi, India; Department of Anatomy, North Delhi Municipal Medical College, New Delhi, India
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14
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Strain differences in hippocampal synaptic dysfunction in the TgCRND8 mouse model of Alzheimer's disease: Implications for improving translational capacity. Mol Cell Neurosci 2019; 94:11-22. [DOI: 10.1016/j.mcn.2018.10.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 09/15/2018] [Accepted: 10/30/2018] [Indexed: 11/17/2022] Open
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15
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Inhibition of microRNA-124-3p as a novel therapeutic strategy for the treatment of Gulf War Illness: Evaluation in a rat model. Neurotoxicology 2018; 71:16-30. [PMID: 30503814 DOI: 10.1016/j.neuro.2018.11.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 11/01/2018] [Accepted: 11/20/2018] [Indexed: 12/27/2022]
Abstract
Gulf War Illness (GWI) is a chronic, multisymptom illness that continues to affect up to 30% of veterans deployed to the Persian Gulf during the 1990-1991 Gulf War. After nearly 30 years, useful treatments for GWI are lacking and underlying cellular and molecular mechanisms involved in its pathobiology remain poorly understood, although exposures to pyridostigmine bromide (PB) and pesticides are consistently identified to be among the strongest risk factors. Alleviation of the broad range of symptoms manifested in GWI, which involve the central nervous system, the neuroendocrine system, and the immune system likely requires therapies that are able to activate and inactivate a large set of orchestrated genes. Previous work in our laboratory using an established rat model of GWI identified persistent elevation of microRNA-124-3p (miR-124) levels in the hippocampus whose numerous gene targets are involved in cognition-associated pathways and neuroendocrine function. This study aimed to investigate the broad effects of miR-124 inhibition in the brain 9 months after completion of a 28-day exposure regimen of PB, DEET (N,N-diethyl-3-methylbenzamide), permethrin, and mild stress by profiling the hippocampal expression of genes known to play a critical role in synaptic plasticity, glucocorticoid signaling, and neurogenesis. We determined that intracerebroventricular infusion of a miR-124 antisense oligonucleotide (miR-124 inhibitor; 0.05-0.5 nmol/day/28 days), but not a negative control oligonucleotide, into the lateral ventricle of the brain caused increased protein expression of multiple validated miR-124 targets and increased expression of downstream target genes important for cognition and neuroendocrine signaling in the hippocampus. Off-target cardiotoxic effects were revealed in GWI rats receiving 0.1 nmol/day as indicated by the detection in plasma of 5 highly elevated protein cardiac injury markers and 6 upregulated cardiac-enriched miRNAs in plasma exosomes determined by next-generation sequencing. Results from this study suggest that in vivo inhibition of miR-124 function in the hippocampus is a promising, novel therapeutic approach to improve cognition and neuroendocrine dysfunction in GWI. Additional preclinical studies in animal models to assess feasibility and safety by developing a practical, noninvasive drug delivery system to the brain and exploring potential adverse toxicologic effects of miR-124 inhibition are warranted.
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16
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Zhu LJ, Ni HY, Chen R, Chang L, Shi HJ, Qiu D, Zhang Z, Wu DL, Jiang ZC, Xin HL, Zhou QG, Zhu DY. Hippocampal nuclear factor kappa B accounts for stress-induced anxiety behaviors via enhancing neuronal nitric oxide synthase (nNOS)-carboxy-terminal PDZ ligand of nNOS-Dexras1 coupling. J Neurochem 2018; 146:598-612. [PMID: 29858554 DOI: 10.1111/jnc.14478] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2017] [Revised: 04/26/2018] [Accepted: 05/29/2018] [Indexed: 02/03/2023]
Abstract
Anxiety disorders are associated with a high social burden worldwide. Recently, increasing evidence suggests that nuclear factor kappa B (NF-κB) has significant implications for psychiatric diseases, including anxiety and depressive disorders. However, the molecular mechanisms underlying the role of NF-κB in stress-induced anxiety behaviors are poorly understood. In this study, we show that chronic mild stress (CMS) and glucocorticoids dramatically increased the expression of NF-κB subunits p50 and p65, phosphorylation and acetylation of p65, and the level of nuclear p65 in vivo and in vitro, implicating activation of NF-κB signaling in chronic stress-induced pathological processes. Using the novelty-suppressed feeding (NSF) and elevated-plus maze (EPM) tests, we found that treatment with pyrrolidine dithiocarbamate (PDTC; intra-hippocampal infusion), an inhibitor of NF-κB, rescued the CMS- or glucocorticoid-induced anxiogenic behaviors in mice. Microinjection of PDTC into the hippocampus reversed CMS-induced up-regulation of neuronal nitric oxide synthase (nNOS), carboxy-terminal PDZ ligand of nNOS (CAPON), and dexamethasone-induced ras protein 1 (Dexras1) and dendritic spine loss of dentate gyrus (DG) granule cells. Moreover, over-expression of CAPON by infusing LV-CAPON-L-GFP into the hippocampus induced nNOS-Dexras1 interaction and anxiety-like behaviors, and inhibition of NF-κB by PDTC reduced the LV-CAPON-L-GFP-induced increases in nNOS-Dexras1 complex and anxiogenic-like effects in mice. These findings indicate that hippocampal NF-κB mediates anxiogenic behaviors, probably via regulating the association of nNOS-CAPON-Dexras1, and uncover a novel approach to the treatment of anxiety disorders.
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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.,Institute of Neuroscience, Soochow University, Suzhou, Jiangsu, China
| | - Huan-Yu Ni
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Rong Chen
- 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
| | - 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
| | - Dan Qiu
- Key Laboratory of Developmental Genes and Human Diseases, MOE, Department of Histology and Embryology, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Zhan Zhang
- Department of Hygiene Analysis and Detection, school of Public Health, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dan-Lian Wu
- Department of Pharmacy, The Affiliated Jiangyin Hospital, School of Medicine, Southeast University, Jiangyin, Jiangsu, China
| | - Zhao-Chun Jiang
- Department of Pharmacy, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Hong-Liang Xin
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Qi-Gang Zhou
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China
| | - Dong-Ya Zhu
- Department of Pharmacology, School of Pharmacy, Nanjing Medical University, Nanjing, Jiangsu, China
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17
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SIRT1 Mediates Apelin-13 in Ameliorating Chronic Normobaric Hypoxia-induced Anxiety-like Behavior by Suppressing NF-κB Pathway in Mice Hippocampus. Neuroscience 2018; 381:22-34. [DOI: 10.1016/j.neuroscience.2018.04.013] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2017] [Revised: 04/06/2018] [Accepted: 04/11/2018] [Indexed: 02/06/2023]
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18
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Snow WM, Cadonic C, Cortes-Perez C, Roy Chowdhury SK, Djordjevic J, Thomson E, Bernstein MJ, Suh M, Fernyhough P, Albensi BC. Chronic dietary creatine enhances hippocampal-dependent spatial memory, bioenergetics, and levels of plasticity-related proteins associated with NF-κB. ACTA ACUST UNITED AC 2018; 25:54-66. [PMID: 29339557 PMCID: PMC5772392 DOI: 10.1101/lm.046284.117] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2017] [Accepted: 11/03/2017] [Indexed: 12/23/2022]
Abstract
The brain has a high demand for energy, of which creatine (Cr) is an important regulator. Studies document neurocognitive benefits of oral Cr in mammals, yet little is known regarding their physiological basis. This study investigated the effects of Cr supplementation (3%, w/w) on hippocampal function in male C57BL/6 mice, including spatial learning and memory in the Morris water maze and oxygen consumption rates from isolated mitochondria in real time. Levels of transcription factors and related proteins (CREB, Egr1, and IκB to indicate NF-κB activity), proteins implicated in cognition (CaMKII, PSD-95, and Egr2), and mitochondrial proteins (electron transport chain Complex I, mitochondrial fission protein Drp1) were probed with Western blotting. Dietary Cr decreased escape latency/time to locate the platform (P < 0.05) and increased the time spent in the target quadrant (P < 0.01) in the Morris water maze. This was accompanied by increased coupled respiration (P < 0.05) in isolated hippocampal mitochondria. Protein levels of CaMKII, PSD-95, and Complex 1 were increased in Cr-fed mice, whereas IκB was decreased. These data demonstrate that dietary supplementation with Cr can improve learning, memory, and mitochondrial function and have important implications for the treatment of diseases affecting memory and energy homeostasis.
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Affiliation(s)
- Wanda M Snow
- Division of Neurodegenerative Disorders, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba R2H 2A6, Canada
| | - Chris Cadonic
- Division of Neurodegenerative Disorders, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba R2H 2A6, Canada
| | - Claudia Cortes-Perez
- Division of Neurodegenerative Disorders, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba R2H 2A6, Canada
| | - Subir K Roy Chowdhury
- Division of Neurodegenerative Disorders, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba R2H 2A6, Canada
| | - Jelena Djordjevic
- Division of Neurodegenerative Disorders, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba R2H 2A6, Canada
| | - Ella Thomson
- Division of Neurodegenerative Disorders, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba R2H 2A6, Canada
| | - Michael J Bernstein
- Department of Psychological and Social Sciences, Pennsylvania State University Abington, Abington, Pennsylvania 19001, USA
| | - Miyoung Suh
- Department of Human Nutritional Sciences, University of Manitoba, Winnipeg, Manitoba R3T 2N2, Canada
| | - Paul Fernyhough
- Division of Neurodegenerative Disorders, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba R2H 2A6, Canada.,Department of Pharmacology & Therapeutics, University of Manitoba, Winnipeg, Manitoba R3E 0T6, Canada
| | - Benedict C Albensi
- Division of Neurodegenerative Disorders, St. Boniface Hospital Albrechtsen Research Centre, Winnipeg, Manitoba R2H 2A6, Canada.,Department of Pharmacology & Therapeutics, University of Manitoba, Winnipeg, Manitoba R3E 0T6, Canada
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19
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Zhang K, Li YJ, Guo Y, Zheng KY, Yang Q, Yang L, Wang XS, Song Q, Chen T, Zhuo M, Zhao MG. Elevated progranulin contributes to synaptic and learning deficit due to loss of fragile X mental retardation protein. Brain 2017; 140:3215-3232. [DOI: 10.1093/brain/awx265] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 08/20/2017] [Indexed: 01/09/2023] Open
Affiliation(s)
- Kun Zhang
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, 710032l, China
| | - Yu-jiao Li
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, 710032l, China
| | - Yanyan Guo
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, 710032l, China
| | - Kai-yin Zheng
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, 710032l, China
| | - Qi Yang
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, 710032l, China
| | - Le Yang
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, 710032l, China
| | - Xin-shang Wang
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, 710032l, China
| | - Qian Song
- Center for Neuron and Disease, Frontier Institutes of Life Science and of Science and Technology, Xi’an Jiaotong University, Xi’an, 710032, China
| | - Tao Chen
- Center for Neuron and Disease, Frontier Institutes of Life Science and of Science and Technology, Xi’an Jiaotong University, Xi’an, 710032, China
- Department of Anatomy, Histology and Embryology and K.K. Leung Brain Research Center, Fourth Military Medical University, Xi’an, 710032, China
| | - Min Zhuo
- Center for Neuron and Disease, Frontier Institutes of Life Science and of Science and Technology, Xi’an Jiaotong University, Xi’an, 710032, China
| | - Ming-gao Zhao
- Department of Pharmacology, School of Pharmacy, Fourth Military Medical University, Xi’an, 710032l, China
- Center for Neuron and Disease, Frontier Institutes of Life Science and of Science and Technology, Xi’an Jiaotong University, Xi’an, 710032, China
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20
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Cell-penetrating interactomic inhibition of nuclear factor-kappa B in a mouse model of postoperative cognitive dysfunction. Sci Rep 2017; 7:13482. [PMID: 29044209 PMCID: PMC5647420 DOI: 10.1038/s41598-017-14027-2] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2017] [Accepted: 10/05/2017] [Indexed: 12/18/2022] Open
Abstract
Some patients experience impaired cognitive functioning after surgery, a phenomenon referred to as postoperative cognitive dysfunction (POCD). Signs of POCD are closely associated with the development of systemic or hippocampal inflammation. However, the precise pathophysiological mechanisms of prevention/treatment options for POCD still remain unclear. After injury, the transcriptional factor nuclear factor-kappa B (NF-κB) is thought to regulate or stimulate inflammation amplification. Therefore, we designed a cell-penetrating fusion protein called nt-p65-TMD, which inhibits NF-κB p65 activation by translocating into the nucleus. In the present study, we discovered that nt-p65-TMD exerted effects on surgery-induced cognitive impairment in mice. Specifically, nt-p65-TMD exhibited strong immunoregulatory properties that were able to reduce surgery-induced elevations in cerebrovascular integrity impairment, subsequent peripheral immune-cell recruitment, and inflammation amplification, which ultimately lead to cognitive decline. The nt-p65-TMD has the unique ability to regulate and reduce systemic inflammation and inflammation amplification, suggesting a new strategy for preventing development of cognitive decline that occurs in POCD.
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21
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Amelioration of apelin-13 in chronic normobaric hypoxia-induced anxiety-like behavior is associated with an inhibition of NF-κB in the hippocampus. Brain Res Bull 2017; 130:67-74. [DOI: 10.1016/j.brainresbull.2017.01.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2016] [Revised: 12/20/2016] [Accepted: 01/03/2017] [Indexed: 12/25/2022]
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22
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Shijo M, Honda H, Suzuki SO, Hamasaki H, Hokama M, Abolhassani N, Nakabeppu Y, Ninomiya T, Kitazono T, Iwaki T. Association of adipocyte enhancer-binding protein 1 with Alzheimer's disease pathology in human hippocampi. Brain Pathol 2017; 28:58-71. [PMID: 27997051 DOI: 10.1111/bpa.12475] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 12/05/2016] [Indexed: 12/16/2022] Open
Abstract
Adipocyte enhancer binding protein 1 (AEBP1) activates inflammatory responses via the NF-κB pathway in macrophages and regulates adipogenesis in preadipocytes. Up-regulation of AEBP1 in the hippocampi of patients with Alzheimer's disease (AD) has been revealed by microarray analyses of autopsied brains from the Japanese general population (the Hisayama study). In this study, we compared the expression patterns of AEBP1 in normal and AD brains, including in the hippocampus, using immunohistochemistry. The subjects were 24 AD cases and 52 non-AD cases. Brain specimens were immunostained with antibodies against AEBP1, tau protein, amyloid β protein, NF-κB, GFAP and Iba-1. In normal brains, AEBP1 immunoreactivity mainly localized to the perikarya of hippocampal pyramidal neurons, and its expression was elevated in the pyramidal neurons and some astrocytes in AD hippocampi. Although AEBP1 immunoreactivity was almost absent in neurons containing neurofibrillary tangles, AEBP1 was highly expressed in neurons with pretangles and in the tau-immunopositive, dystrophic neurites of senile plaques. Nuclear localization of NF-κB was also observed in certain AEBP1-positive neurons in AD cases. Comparison of AD and non-AD cases suggested a positive correlation between the expression level of AEBP1 and the degree of amyloid β pathology. These findings imply that AEBP1 protein has a role in the progression of AD pathology.
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Affiliation(s)
- Masahiro Shijo
- Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hiroyuki Honda
- Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Satoshi O Suzuki
- Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Hideomi Hamasaki
- Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Masaaki Hokama
- Department of Neurosurgery, Japan Community Healthcare Organization, Kyushu Hospital, Fukuoka, Japan
| | - Nona Abolhassani
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Yusaku Nakabeppu
- Division of Neurofunctional Genomics, Department of Immunobiology and Neuroscience, Medical Institute of Bioregulation, Kyushu University, Fukuoka, Japan
| | - Toshiharu Ninomiya
- Center for Cohort Studies, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Takanari Kitazono
- Department of Medicine and Clinical Science, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan.,Center for Cohort Studies, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Toru Iwaki
- Department of Neuropathology, Neurological Institute, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
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23
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Nakamura TY, Nakao S, Nakajo Y, Takahashi JC, Wakabayashi S, Yanamoto H. Possible Signaling Pathways Mediating Neuronal Calcium Sensor-1-Dependent Spatial Learning and Memory in Mice. PLoS One 2017; 12:e0170829. [PMID: 28122057 PMCID: PMC5266288 DOI: 10.1371/journal.pone.0170829] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Accepted: 01/11/2017] [Indexed: 01/10/2023] Open
Abstract
Intracellular Ca2+ signaling regulates diverse functions of the nervous system. Many of these neuronal functions, including learning and memory, are regulated by neuronal calcium sensor-1 (NCS-1). However, the pathways by which NCS-1 regulates these functions remain poorly understood. Consistent with the findings of previous reports, we revealed that NCS-1 deficient (Ncs1-/-) mice exhibit impaired spatial learning and memory function in the Morris water maze test, although there was little change in their exercise activity, as determined via treadmill-analysis. Expression of brain-derived neurotrophic factor (BDNF; a key regulator of memory function) and dopamine was significantly reduced in the Ncs1-/- mouse brain, without changes in the levels of glial cell-line derived neurotrophic factor or nerve growth factor. Although there were no gross structural abnormalities in the hippocampi of Ncs1-/- mice, electron microscopy analysis revealed that the density of large dense core vesicles in CA1 presynaptic neurons, which release BDNF and dopamine, was decreased. Phosphorylation of Ca2+/calmodulin-dependent protein kinase II-α (CaMKII-α, which is known to trigger long-term potentiation and increase BDNF levels, was significantly reduced in the Ncs1-/- mouse brain. Furthermore, high voltage electric potential stimulation, which increases the levels of BDNF and promotes spatial learning, significantly increased the levels of NCS-1 concomitant with phosphorylated CaMKII-α in the hippocampus; suggesting a close relationship between NCS-1 and CaMKII-α. Our findings indicate that NCS-1 may regulate spatial learning and memory function at least in part through activation of CaMKII-α signaling, which may directly or indirectly increase BDNF production.
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Affiliation(s)
- Tomoe Y. Nakamura
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
- * E-mail:
| | - Shu Nakao
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Yukako Nakajo
- Laboratory of Neurology and Neurosurgery, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Jun C. Takahashi
- Department of Neurosurgery, National Cerebral and Cardiovascular Center Hospital, Suita, Osaka, Japan
| | - Shigeo Wakabayashi
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Hiroji Yanamoto
- Laboratory of Neurology and Neurosurgery, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
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Acute stress enhances the expression of neuroprotection- and neurogenesis-associated genes in the hippocampus of a mouse restraint model. Oncotarget 2017; 7:8455-65. [PMID: 26863456 PMCID: PMC4890979 DOI: 10.18632/oncotarget.7225] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2015] [Accepted: 01/26/2016] [Indexed: 12/16/2022] Open
Abstract
Stress arises from an external demand placed on an organism that triggers physiological, cognitive and behavioural responses in order to cope with that request. It is thus an adaptive response useful for the survival of an organism. The objective of this study was to identify and characterize global changes in gene expression in the hippocampus in response to acute stress stimuli, by employing a mouse model of short-term restraint stress. In our experimental design mice were subjected to a one time exposure of restraint stress and the regulation of gene expression in the hippocampus was examined 3, 12 and 24 hours thereafter. Microarray analysis revealed that mice which had undergone acute restraint stress differed from non-stressed controls in global hippocampal transcriptional responses. An up-regulation of transcripts contributing directly or indirectly to neurogenesis and neuronal protection including, Ttr, Rab6, Gh, Prl, Ndufb9 and Ndufa6, was observed. Systems level analyses revealed a significant enrichment for neurogenesis, neuron morphogenesis- and cognitive functions-related biological process terms and pathways. This work further supports the hypothesis that acute stress mediates a positive action on the hippocampus favouring the formation and the preservation of neurons, which will be discussed in the context of current data from the literature.
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25
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Cvijetic S, Bortolotto V, Manfredi M, Ranzato E, Marengo E, Salem R, Canonico PL, Grilli M. Cell autonomous and noncell-autonomous role of NF-κB p50 in astrocyte-mediated fate specification of adult neural progenitor cells. Glia 2016; 65:169-181. [PMID: 27758000 DOI: 10.1002/glia.23085] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2016] [Revised: 09/19/2016] [Accepted: 09/29/2016] [Indexed: 12/22/2022]
Abstract
In previous work, we demonstrated that NF-κB p50 acts as crucial regulator of adult hippocampal neural progenitor cells (ahNPC). Indeed, NF-κB p50 knockout (KO) mice are characterized by remarkably reduced hippocampal neurogenesis. As a follow up to that work, herein we show that when cultured in vitro, ahNPC from wild type (WT) and p50KO mice are not significantly different in their neurogenic potential. This observation prompted us to investigate cell-autonomous and noncell-autonomous consequences of p50 absence on neuronal fate specification of ahNPC. In particular, we focused our attention on astrocytes, known to provide soluble proneurogenic signals, and investigated the influence of WT and p50KO astrocyte conditioned media (ACM) on WT and p50KO ahNPC differentiation. Interestingly, while WT ACM promoted both neuronal and astroglial differentiations, p50KO ACM only supported astroglial differentiation of WT ahNPC. By using a LC-MS/MS approach, we identified some proteins, which are significantly upregulated in p50KO compared with WT astrocytes. Among them, lipocalin-2 (LCN-2) was recognized as a novel astroglial-derived signal regulating neuronal fate specification of ahNPC. Interestingly, LCN-2 proneurogenic effect was greatly reduced in p50KO NPC, where LCN-2 receptor gene expression appeared downregulated. In addition to that, we demonstrated p50KO NPC unresponsiveness to both neuronal and astroglial fate specification signals from WT and p50KO ACM, and we identified a reduced expression of α2δ1, a thrombospondin-1 receptor, as another phenotypic change occurring in ahNPC in the absence of p50. Altogether, our data suggest that dysregulated NPC-astrocyte communication may contribute to a reduced hippocampal neurogenesis in p50KO mice in vivo. GLIA 2016 GLIA 2017;65:169-181.
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Affiliation(s)
- Suzana Cvijetic
- Laboratory of Neuroplasticity, Università del Piemonte Orientale, Novara, Italy.,Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara, Italy
| | - Valeria Bortolotto
- Laboratory of Neuroplasticity, Università del Piemonte Orientale, Novara, Italy.,Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara, Italy
| | - Marcello Manfredi
- ISALIT srl-Dipartimento di Scienze ed Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy
| | - Elia Ranzato
- Dipartimento di Scienze ed Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy
| | - Emilio Marengo
- Dipartimento di Scienze ed Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy.,ISALIT srl-Dipartimento di Scienze ed Innovazione Tecnologica, Università del Piemonte Orientale, Alessandria, Italy
| | - Rita Salem
- Laboratory of Neuroplasticity, Università del Piemonte Orientale, Novara, Italy.,Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara, Italy
| | - Pier Luigi Canonico
- Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara, Italy
| | - Mariagrazia Grilli
- Laboratory of Neuroplasticity, Università del Piemonte Orientale, Novara, Italy.,Dipartimento di Scienze del Farmaco, Università del Piemonte Orientale, Novara, Italy
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Fan J, Fan X, Li Y, Guo J, Xia D, Ding L, Zheng Q, Wang W, Xue F, Chen R, Liu S, Hu L, Gong Y. Blunted inflammation mediated by NF-κB activation in hippocampus alleviates chronic normobaric hypoxia-induced anxiety-like behavior in rats. Brain Res Bull 2016; 122:54-61. [DOI: 10.1016/j.brainresbull.2016.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2016] [Revised: 02/25/2016] [Accepted: 03/09/2016] [Indexed: 01/09/2023]
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Kaltschmidt B, Kaltschmidt C. NF-KappaB in Long-Term Memory and Structural Plasticity in the Adult Mammalian Brain. Front Mol Neurosci 2015; 8:69. [PMID: 26635522 PMCID: PMC4656838 DOI: 10.3389/fnmol.2015.00069] [Citation(s) in RCA: 77] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2015] [Accepted: 10/30/2015] [Indexed: 11/13/2022] Open
Abstract
The transcription factor nuclear factor kappaB (NF-κB) is a well-known regulator of inflammation, stress, and immune responses as well as cell survival. In the nervous system, NF-κB is one of the crucial components in the molecular switch that converts short- to long-term memory-a process that requires de novo gene expression. Here, the researches published on NF-κB and downstream target genes in mammals will be reviewed, which are necessary for structural plasticity and long-term memory, both under normal and pathological conditions in the brain. Genetic evidence has revealed that NF-κB regulates neuroprotection, neuronal transmission, and long-term memory. In addition, after genetic ablation of all NF-κB subunits, a severe defect in hippocampal adult neurogenesis was observed during aging. Proliferation of neural precursors is increased; however, axon outgrowth, synaptogenesis, and tissue homeostasis of the dentate gyrus are hampered. In this process, the NF-κB target gene PKAcat and other downstream target genes such as Igf2 are critically involved. Therefore, NF-κB activity seems to be crucial in regulating structural plasticity and replenishment of granule cells within the hippocampus throughout the life. In addition to the function of NF-κB in neurons, we will discuss on a neuroinflammatory role of the transcription factor in glia. Finally, a model for NF-κB homeostasis on the molecular level is presented, in order to explain seemingly the contradictory, the friend or foe, role of NF-κB in the nervous system.
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Snow WM, Pahlavan PS, Djordjevic J, McAllister D, Platt EE, Alashmali S, Bernstein MJ, Suh M, Albensi BC. Morris Water Maze Training in Mice Elevates Hippocampal Levels of Transcription Factors Nuclear Factor (Erythroid-derived 2)-like 2 and Nuclear Factor Kappa B p65. Front Mol Neurosci 2015; 8:70. [PMID: 26635523 PMCID: PMC4649017 DOI: 10.3389/fnmol.2015.00070] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2015] [Accepted: 11/03/2015] [Indexed: 11/30/2022] Open
Abstract
Research has identified several transcription factors that regulate activity-dependent plasticity and memory, with cAMP-response element binding protein (CREB) being the most well-studied. In neurons, CREB activation is influenced by the transcription factor nuclear factor kappa B (NF-κB), considered central to immunity but more recently implicated in memory. The transcription factor early growth response-2 (Egr-2), an NF-κB gene target, is also associated with learning and memory. Nuclear factor (erythroid-derived 2)-like 2 (Nrf2), an antioxidant transcription factor linked to NF-κB in pathological conditions, has not been studied in normal memory. Given that numerous transcription factors implicated in activity-dependent plasticity demonstrate connections to NF-κB, this study simultaneously evaluated protein levels of NF-κB, CREB, Egr-2, Nrf2, and actin in hippocampi from young (1 month-old) weanling CD1 mice after training in the Morris water maze, a hippocampal-dependent spatial memory task. After a 6-day acquisition period, time to locate the hidden platform decreased in the Morris water maze. Mice spent more time in the target vs. non-target quadrants of the maze, suggestive of recall of the platform location. Western blot data revealed a decrease in NF-κB p50 protein after training relative to controls, whereas NF-κB p65, Nrf2 and actin increased. Nrf2 levels were correlated with platform crosses in nearly all tested animals. These data demonstrate that training in a spatial memory task results in alterations in and associations with particular transcription factors in the hippocampus, including upregulation of NF-κB p65 and Nrf2. Training-induced increases in actin protein levels caution against its use as a loading control in immunoblot studies examining activity-dependent plasticity, learning, and memory.
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Affiliation(s)
- Wanda M Snow
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research Winnipeg, MB, Canada ; Faculty of Health Sciences, Department of Pharmacology and Therapeutics, College of Medicine, University of Manitoba Winnipeg, MB, Canada
| | - Payam S Pahlavan
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research Winnipeg, MB, Canada ; Faculty of Health Sciences, Department of Pharmacology and Therapeutics, College of Medicine, University of Manitoba Winnipeg, MB, Canada
| | - Jelena Djordjevic
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research Winnipeg, MB, Canada ; Faculty of Health Sciences, Department of Pharmacology and Therapeutics, College of Medicine, University of Manitoba Winnipeg, MB, Canada
| | - Danielle McAllister
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research Winnipeg, MB, Canada
| | - Eric E Platt
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research Winnipeg, MB, Canada
| | - Shoug Alashmali
- Department of Human Nutritional Sciences, University of Manitoba Winnipeg, MB, Canada
| | - Michael J Bernstein
- Department of Psychological and Social Sciences, Pennsylvania State University Abington Abington, PA, USA
| | - Miyoung Suh
- Department of Human Nutritional Sciences, University of Manitoba Winnipeg, MB, Canada
| | - Benedict C Albensi
- Division of Neurodegenerative Disorders, St. Boniface Hospital Research Winnipeg, MB, Canada ; Faculty of Health Sciences, Department of Pharmacology and Therapeutics, College of Medicine, University of Manitoba Winnipeg, MB, Canada ; Faculty of Engineering, Department of Electrical and Computer Engineering, University of Manitoba Winnipeg, MB, Canada
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Jarome TJ, Butler AA, Nichols JN, Pacheco NL, Lubin FD. NF-κB mediates Gadd45β expression and DNA demethylation in the hippocampus during fear memory formation. Front Mol Neurosci 2015; 8:54. [PMID: 26441517 PMCID: PMC4584956 DOI: 10.3389/fnmol.2015.00054] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2015] [Accepted: 08/30/2015] [Indexed: 12/29/2022] Open
Abstract
Gadd45-mediated DNA demethylation mechanisms have been implicated in the process of memory formation. However, the transcriptional mechanisms involved in the regulation of Gadd45 gene expression during memory formation remain unexplored. NF-κB (nuclear factor kappa-light-chain-enhancer of activated B cells) controls transcription of genes in neurons and is a critical regulator of synaptic plasticity and memory formation. In silico analysis revealed several NF-κB (p65/RelA and cRel) consensus sequences within the Gadd45β gene promoter. Whether NF-κB activity regulates Gadd45 expression and associated DNA demethylation in neurons during memory formation is unknown. Here, we found that learning in a fear conditioning paradigm increased Gadd45β gene expression and brain-derivedneurotrophic factor (BDNF) DNA demethylation in area CA1 of the hippocampus, both of which were prevented with pharmacological inhibition of NF-κB activity. Further experiments found that conditional mutations in p65/RelA impaired fear memory formation but did not alter changes in Gadd45β expression. The learning-induced increases in Gadd45β mRNA levels, Gadd45β binding at the BDNF gene and BDNF DNA demethylation were blocked in area CA1 of the c-rel knockout mice. Additionally, local siRNA-mediated knockdown of c-rel in area CA1 prevented fear conditioning-induced increases in Gadd45β expression and BDNF DNA demethylation, suggesting that c-Rel containing NF-κB transcription factor complex is responsible for Gadd45β regulation during memory formation. Together, these results support a novel transcriptional role for NF-κB in regulation of Gadd45β expression and DNA demethylation in hippocampal neurons during fear memory.
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Affiliation(s)
- Timothy J Jarome
- Department of Neurobiology, University of Alabama at Birmingham Birmingham, AL, USA
| | - Anderson A Butler
- Department of Neurobiology, University of Alabama at Birmingham Birmingham, AL, USA
| | - Jessica N Nichols
- Department of Neurobiology, University of Alabama at Birmingham Birmingham, AL, USA
| | - Natasha L Pacheco
- Department of Neurobiology, University of Alabama at Birmingham Birmingham, AL, USA
| | - Farah D Lubin
- Department of Neurobiology, University of Alabama at Birmingham Birmingham, AL, USA
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de la Fuente V, Federman N, Zalcman G, Salles A, Freudenthal R, Romano A. NF-κB transcription factor role in consolidation and reconsolidation of persistent memories. Front Mol Neurosci 2015; 8:50. [PMID: 26441513 PMCID: PMC4563083 DOI: 10.3389/fnmol.2015.00050] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2015] [Accepted: 08/24/2015] [Indexed: 12/16/2022] Open
Abstract
Transcriptional regulation is an important molecular process required for long-term neural plasticity and long-term memory (LTM) formation. Thus, one main interest in molecular neuroscience in the last decades has been the identification of transcription factors that are involved in memory processes. Among them, the nuclear factor κB (NF-κB) family of transcription factors has gained interest due to a significant body of evidence that supports a key role of these proteins in synaptic plasticity and memory. In recent years, the interest was particularly reinforced because NF-κB was characterized as an important regulator of synaptogenesis. This function may be explained by its participation in synapse to nucleus communication, as well as a possible local role at the synapse. This review provides an overview of experimental work obtained in the last years, showing the essential role of this transcription factor in memory processes in different learning tasks in mammals. We focus the review on the consolidation and reconsolidation memory phases as well as on the regulation of immediate-early and late genes by epigenetic mechanisms that determine enduring forms of memories.
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Affiliation(s)
- Verónica de la Fuente
- Laboratorio de Neurobiología de la Memoria, Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA-CONICET), Universidad de Buenos Aires, Ciudad Universitaria Buenos Aires, Argentina
| | - Noel Federman
- Laboratorio de Neurobiología de la Memoria, Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA-CONICET), Universidad de Buenos Aires, Ciudad Universitaria Buenos Aires, Argentina
| | - Gisela Zalcman
- Laboratorio de Neurobiología de la Memoria, Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA-CONICET), Universidad de Buenos Aires, Ciudad Universitaria Buenos Aires, Argentina
| | - Angeles Salles
- Laboratorio de Neurobiología de la Memoria, Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA-CONICET), Universidad de Buenos Aires, Ciudad Universitaria Buenos Aires, Argentina
| | - Ramiro Freudenthal
- Laboratorio de Neurobiología de la Memoria, Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA-CONICET), Universidad de Buenos Aires, Ciudad Universitaria Buenos Aires, Argentina
| | - Arturo Romano
- Laboratorio de Neurobiología de la Memoria, Departamento de Fisiología, Biología Molecular y Celular, Facultad de Ciencias Exactas y Naturales, Instituto de Fisiología, Biología Molecular y Neurociencias (IFIBYNE, UBA-CONICET), Universidad de Buenos Aires, Ciudad Universitaria Buenos Aires, Argentina
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31
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Peixoto L, Risso D, Poplawski SG, Wimmer ME, Speed TP, Wood MA, Abel T. How data analysis affects power, reproducibility and biological insight of RNA-seq studies in complex datasets. Nucleic Acids Res 2015. [PMID: 26202970 PMCID: PMC4652761 DOI: 10.1093/nar/gkv736] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The sequencing of the full transcriptome (RNA-seq) has become the preferred choice for the measurement of genome-wide gene expression. Despite its widespread use, challenges remain in RNA-seq data analysis. One often-overlooked aspect is normalization. Despite the fact that a variety of factors or ‘batch effects’ can contribute unwanted variation to the data, commonly used RNA-seq normalization methods only correct for sequencing depth. The study of gene expression is particularly problematic when it is influenced simultaneously by a variety of biological factors in addition to the one of interest. Using examples from experimental neuroscience, we show that batch effects can dominate the signal of interest; and that the choice of normalization method affects the power and reproducibility of the results. While commonly used global normalization methods are not able to adequately normalize the data, more recently developed RNA-seq normalization can. We focus on one particular method, RUVSeq and show that it is able to increase power and biological insight of the results. Finally, we provide a tutorial outlining the implementation of RUVSeq normalization that is applicable to a broad range of studies as well as meta-analysis of publicly available data.
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Affiliation(s)
- Lucia Peixoto
- Department of Biology, University of Pennsylvania, Smilow Center for Translational Research, Room 10-170, Building 421, 3400 Civic Center Boulevard, Philadelphia, PA 19104-6168, USA
| | - Davide Risso
- Division of Biostatistics, School of Public Health, University of California, Berkeley, 344 Li Ka Shing Center, #3370, Berkeley, CA 94720-3370, USA
| | - Shane G Poplawski
- Department of Biology, University of Pennsylvania, Smilow Center for Translational Research, Room 10-170, Building 421, 3400 Civic Center Boulevard, Philadelphia, PA 19104-6168, USA
| | - Mathieu E Wimmer
- Department of Biology, University of Pennsylvania, Smilow Center for Translational Research, Room 10-170, Building 421, 3400 Civic Center Boulevard, Philadelphia, PA 19104-6168, USA
| | - Terence P Speed
- Department of Statistics, University of California, Berkeley, Department of Mathematics and Statistics, The University of Melbourne, Bioinformatics Division, The Walter and Eliza Hall Institute of Medical Research, Australia
| | - Marcelo A Wood
- University of California, Irvine, Department of Neurobiology and Behavior, USA
| | - Ted Abel
- Department of Biology, University of Pennsylvania, Smilow Center for Translational Research, Room 10-170, Building 421, 3400 Civic Center Boulevard, Philadelphia, PA 19104-6168, USA
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Abbasi A, Forsberg K, Bischof F. The role of the ubiquitin-editing enzyme A20 in diseases of the central nervous system and other pathological processes. Front Mol Neurosci 2015; 8:21. [PMID: 26124703 PMCID: PMC4466442 DOI: 10.3389/fnmol.2015.00021] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 05/24/2015] [Indexed: 11/28/2022] Open
Abstract
In recent years, the ubiquitin-editing enzyme A20 has been shown to control a large set of molecular pathways involved in the regulation of protective as well as self-directed immune responses. Here, we assess the current and putative roles of A20 in inflammatory, vascular and degenerative diseases of the central nervous system and explore future directions of research.
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Affiliation(s)
- Asghar Abbasi
- Department of Neuroimmunology, Hertie Institute for Clinical Brain Research and Center of Neurology, University Hospital Tübingen Tübingen, Germany
| | - Kirsi Forsberg
- Department of Neuroimmunology, Hertie Institute for Clinical Brain Research and Center of Neurology, University Hospital Tübingen Tübingen, Germany
| | - Felix Bischof
- Department of Neuroimmunology, Hertie Institute for Clinical Brain Research and Center of Neurology, University Hospital Tübingen Tübingen, Germany
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Peixoto LL, Wimmer ME, Poplawski SG, Tudor JC, Kenworthy CA, Liu S, Mizuno K, Garcia BA, Zhang NR, Giese K, Abel T. Memory acquisition and retrieval impact different epigenetic processes that regulate gene expression. BMC Genomics 2015; 16 Suppl 5:S5. [PMID: 26040834 PMCID: PMC4460846 DOI: 10.1186/1471-2164-16-s5-s5] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Background A fundamental question in neuroscience is how memories are stored and retrieved in the brain. Long-term memory formation requires transcription, translation and epigenetic processes that control gene expression. Thus, characterizing genome-wide the transcriptional changes that occur after memory acquisition and retrieval is of broad interest and importance. Genome-wide technologies are commonly used to interrogate transcriptional changes in discovery-based approaches. Their ability to increase scientific insight beyond traditional candidate gene approaches, however, is usually hindered by batch effects and other sources of unwanted variation, which are particularly hard to control in the study of brain and behavior. Results We examined genome-wide gene expression after contextual conditioning in the mouse hippocampus, a brain region essential for learning and memory, at all the time-points in which inhibiting transcription has been shown to impair memory formation. We show that most of the variance in gene expression is not due to conditioning and that by removing unwanted variance through additional normalization we are able provide novel biological insights. In particular, we show that genes downregulated by memory acquisition and retrieval impact different functions: chromatin assembly and RNA processing, respectively. Levels of histone 2A variant H2AB are reduced only following acquisition, a finding we confirmed using quantitative proteomics. On the other hand, splicing factor Rbfox1 and NMDA receptor-dependent microRNA miR-219 are only downregulated after retrieval, accompanied by an increase in protein levels of miR-219 target CAMKIIγ. Conclusions We provide a thorough characterization of coding and non-coding gene expression during long-term memory formation. We demonstrate that unwanted variance dominates the signal in transcriptional studies of learning and memory and introduce the removal of unwanted variance through normalization as a necessary step for the analysis of genome-wide transcriptional studies in the context of brain and behavior. We show for the first time that histone variants are downregulated after memory acquisition, and splicing factors and microRNAs after memory retrieval. Our results provide mechanistic insights into the molecular basis of cognition by highlighting the differential involvement of epigenetic mechanisms, such as histone variants and post-transcriptional RNA regulation, after acquisition and retrieval of memory.
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Hippocampal dynamics of synaptic NF-kappa B during inhibitory avoidance long-term memory consolidation in mice. Neuroscience 2015; 291:70-80. [DOI: 10.1016/j.neuroscience.2015.01.063] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 01/26/2015] [Accepted: 01/28/2015] [Indexed: 11/22/2022]
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35
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Hascup ER, Wang F, Kopchick JJ, Bartke A. Inflammatory and Glutamatergic Homeostasis Are Involved in Successful Aging. J Gerontol A Biol Sci Med Sci 2015; 71:281-9. [PMID: 25711529 DOI: 10.1093/gerona/glv010] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2014] [Accepted: 01/10/2015] [Indexed: 11/13/2022] Open
Abstract
Whole body studies using long-lived growth hormone receptor gene disrupted or knock out (GHR-KO) mice report global GH resistance, increased insulin sensitivity, reduced insulin-like growth factor 1 (IGF-1), and cognitive retention in old-age, however, little is known about the neurobiological status of these mice. The aim of this study was to determine if glutamatergic and inflammatory markers that are altered in aging and/or age-related diseases and disorders, are preserved in mice that experience increased healthspan. We examined messenger ribonucleic acid (mRNA) expression levels in the brain of 4- to 6-, 8- to 10-, and 20- to 22-month GHR-KO and normal aging control mice. In the hippocampus, glutamate transporter 1 (GLT-1) and anti-inflammatory nuclear factor kappa-light-chain-enhancer of activated B cells (NFκB)-p50 were elevated in 8- to 10-month GHR-KO mice compared with age-matched controls. In the hypothalamus, NFκB-p50, NFκB-p65, IGF-1 receptor (IGF-1R), glutamate/aspartate transporter (GLAST), and 2-amino-3-(5-methyl-3-oxo 2,3-dihydro-1,2 oxazol-4-yl) propanoic acid receptor subunit 1 (GluA1) were elevated in 8- to 10- and/or 20- to 22-month GHR-KO mice when comparing genotypes. Finally, interleukin 1-beta (IL-1β) mRNA was reduced in 4- to 6- and/or 8- to 10-month GHR-KO mice compared with normal littermates in all brain areas examined. These data support the importance of decreased brain inflammation in early adulthood and maintained homeostasis of the glutamatergic and inflammatory systems in extended longevity.
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Affiliation(s)
- Erin R Hascup
- Department of Neurology and the Center for Alzheimer's Disease and Related Disorders, Southern Illinois University School of Medicine, Springfield.
| | - Feiya Wang
- Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield
| | - John J Kopchick
- Edison Biotechnology Institute Department of Biomedical Sciences, Ohio University, Athens
| | - Andrzej Bartke
- Department of Internal Medicine, Southern Illinois University School of Medicine, Springfield
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Aloor R, Zhang C, Bandyopadhyay M, Dasgupta S. Impact of nuclear factor-κB on restoration of neuron growth and differentiation in hippocampus of degenerative brain. J Neurosci Res 2015; 93:1471-5. [PMID: 25586448 DOI: 10.1002/jnr.23547] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Accepted: 11/30/2014] [Indexed: 01/29/2023]
Abstract
The mode of action of nuclear factor-κB (NF-κB) has been extensively observed in different aspects of cell growth and proliferation. The transcription factor regulates various genes controlling inflammation and anti-inflammatory responses in different tissues. Thus, NF-κB signal gains a therapeutic prospect. The activation of NF-κB requires nuclear localization of its p65 subunit. Research also indicates an impact of phosphorylated p65 on the transcription of genes during cell growth and the immune response. Following the trends in investigations over decades, different observations suggest that NF-κB activation and phosphorylation of p65 regulate neuronal plasticity. Also, inhibition of NF-κB activation is a well-demonstrated way to attenuate inflammation. In addition to anti-inflammatory drugs, recent researches unwind a way to regulate regeneration and repair tissue damage. Thus, keeping a critical view on NF-κB signals, we propose the importance of natural or synthetic NF-κB activators for neurogenesis.
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Affiliation(s)
- Rohit Aloor
- Department of Microbiology, Immunology, Saint James School of Medicine, Anguilla, British West Indies
| | - Christine Zhang
- Department of Microbiology, Immunology, Saint James School of Medicine, Anguilla, British West Indies
| | | | - Subhajit Dasgupta
- Department of Microbiology, Immunology, Saint James School of Medicine, Anguilla, British West Indies.,Department of Biochemistry, Saint James School of Medicine, Anguilla, British West Indies
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Nafez S, Oikawa K, Odero GL, Sproule M, Ge N, Schapansky J, Abrenica B, Hatherell A, Cadonic C, Zhang S, Song X, Kauppinen T, Glazner GW, Grilli M, Czubryt MP, Eisenstat DD, Albensi BC. Early growth response 2 (Egr-2) expression is triggered by NF-κB activation. Mol Cell Neurosci 2014; 64:95-103. [PMID: 25553923 DOI: 10.1016/j.mcn.2014.12.008] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2013] [Revised: 11/18/2014] [Accepted: 12/27/2014] [Indexed: 01/31/2023] Open
Abstract
Transcription factors are known to play multiple roles in cellular function. Investigators report that factors such as early growth response (Egr) protein and nuclear factor kappa B (NF-κB) are activated in the brain during cancer, brain injury, inflammation, and/or memory. To explore NF-κB activity further, we investigated the transcriptomes of hippocampal slices following electrical stimulation of NF-κB p50 subunit knockout mice (p50-/-) versus their controls (p50+/+). We found that the early growth response gene Egr-2 was upregulated by NF-κB activation, but only in p50+/+ hippocampal slices. We then stimulated HeLa cells and primary cortical neurons with tumor necrosis factor alpha (TNFα) to activate NF-κB and increase the expression of Egr-2. The Egr-2 promoter sequence was analyzed for NF-κB binding sites and chromatin immunoprecipitation (ChIP) assays were performed to confirm promoter occupancy in vivo. We discovered that NF-κB specifically binds to an NF-κB consensus binding site within the proximal promoter region of Egr-2. Luciferase assay demonstrated that p50 was able to transactivate the Egr-2 promoter in vitro. Small interfering RNA (siRNA)-mediated p50 knockdown corroborated other Egr-2 expression studies. We show for the first time a novel link between NF-κB activation and Egr-2 expression with Egr-2 expression directly controlled by the transcriptional activity of NF-κB.
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Affiliation(s)
- Solmaz Nafez
- St. Boniface Hospital Research; University of Manitoba, Dept. of Pharmacology & Therapeutics, Winnipeg MB, Canada
| | - Kensuke Oikawa
- St. Boniface Hospital Research; University of Manitoba, Dept. of Pharmacology & Therapeutics, Winnipeg MB, Canada
| | - Gary L Odero
- St. Boniface Hospital Research, Winnipeg MB, Canada
| | | | - Ning Ge
- St. Boniface Hospital Research, Winnipeg MB, Canada
| | - Jason Schapansky
- St. Boniface Hospital Research; University of Manitoba, Dept. of Pharmacology & Therapeutics, Winnipeg MB, Canada
| | | | | | - Chris Cadonic
- St. Boniface Hospital Research; University of Manitoba - Graduate Program in Biomedical Engineering, Winnipeg MB, Canada
| | - Shunzhen Zhang
- Manitoba Institute of Cell Biology, University of Manitoba, Winnipeg MB, Canada
| | - Xiaohua Song
- Dept. of Medical Genetics, University of Alberta, Edmonton AB, Canada
| | - Tiina Kauppinen
- University of Manitoba, Dept. of Pharmacology & Therapeutics, Winnipeg MB, Canada
| | - Gordon W Glazner
- St. Boniface Hospital Research; University of Manitoba, Dept. of Pharmacology & Therapeutics, Winnipeg MB, Canada
| | - Mariagrazia Grilli
- Dept. Pharmaceutical Sciences, University of Piemonte Orientale, Novara Italy
| | - Michael P Czubryt
- St. Boniface Hospital Research; University of Manitoba, Dept. of Physiology, Winnipeg MB, Canada
| | - David D Eisenstat
- Depts. of Pediatrics, Medical Genetics and Oncology, University of Alberta, Edmonton AB, Canada
| | - Benedict C Albensi
- St. Boniface Hospital Research; University of Manitoba - Graduate Program in Biomedical Engineering; University of Manitoba, Dept. of Pharmacology & Therapeutics, Winnipeg MB, Canada.
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38
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Huang H, Joseph LC, Gurin MI, Thorp EB, Morrow JP. Extracellular signal-regulated kinase activation during cardiac hypertrophy reduces sarcoplasmic/endoplasmic reticulum calcium ATPase 2 (SERCA2) transcription. J Mol Cell Cardiol 2014; 75:58-63. [PMID: 25008120 DOI: 10.1016/j.yjmcc.2014.06.018] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/02/2014] [Revised: 06/23/2014] [Accepted: 06/26/2014] [Indexed: 10/25/2022]
Abstract
Pathologic cardiac hypertrophy can lead to heart failure, but the mechanisms involved are poorly understood. SERCA2 is critical for normal cardiac calcium handling and function and SERCA2 mRNA and protein levels are reduced by cardiac hypertrophy. We hypothesized that extracellular signal-regulated kinase (ERK) 1/2 activation during hypertrophy reduced SERCA2 transcription. Using a neonatal rat ventricular myocyte model of hypertrophy, we found that pharmacologic inhibitors of ERK activation preserve SERCA2 mRNA levels during hypertrophy. ERK activation is sufficient to reduce SERCA2 mRNA. We determined that ERK represses SERCA2 transcription via nuclear factor-kappaB (NFkB), and activation of NFkB is sufficient to reduce SERCA2 mRNA in cardiomyocytes. This work establishes novel connections between ERK, NFkB, and SERCA2 repression during cardiac hypertrophy. This mechanism may have implications for the progression of hypertrophy to heart failure.
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Affiliation(s)
- Haiyan Huang
- Department of Medicine, Division of Cardiology, College of Physicians and Surgeons of Columbia University, 622 W 168th Street, New York, NY 10032, United States
| | - Leroy C Joseph
- Department of Medicine, Division of Cardiology, College of Physicians and Surgeons of Columbia University, 622 W 168th Street, New York, NY 10032, United States
| | - Michael I Gurin
- Department of Medicine, Division of Cardiology, College of Physicians and Surgeons of Columbia University, 622 W 168th Street, New York, NY 10032, United States
| | - Edward B Thorp
- Department of Pathology and Feinberg Cardiovascular Research Institute, Northwestern University, Feinberg School of Medicine, 300 E. Superior Street, Chicago, IL 60611, United States
| | - John P Morrow
- Department of Medicine, Division of Cardiology, College of Physicians and Surgeons of Columbia University, 622 W 168th Street, New York, NY 10032, United States.
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Salles A, Romano A, Freudenthal R. Synaptic NF-kappa B pathway in neuronal plasticity and memory. ACTA ACUST UNITED AC 2014; 108:256-62. [PMID: 24854662 DOI: 10.1016/j.jphysparis.2014.05.002] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2014] [Revised: 04/14/2014] [Accepted: 05/09/2014] [Indexed: 10/25/2022]
Abstract
Several transcription factors are present at the synapse, and among these are the Rel-NF-kappa B pathway components. NF-kappa B is a constitutive transcription factor, with a strong presence in the brain of which a considerable part is located in the neuropiles. This localization of the transcription factor, plus evidence pointing to different functions, is what gave place to two general hypotheses for synaptic NF-kappa B: (a) The transcription factor plays a role in the synapse to nucleus communication, and it is retrogradely transported from polarized localizations to regulate gene expression; (b) The transcription factor modulates the synaptic function locally. Evidence indicates that both mechanisms can operate simultaneously; here we will present different possibilities of these hypotheses that are supported by an increasing amount of data. We pay special attention to the local role of the transcription factor at the synapse, and based in the described evidence from different animal models, we propose several processes in which the transcription factor may change the synaptic strength.
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Affiliation(s)
- Angeles Salles
- Laboratorio de Neurobiología de la Memoria, FBMC, FCEyN, UBA, IFIBYNE, CONICET, 2°piso, pabellón II, Intendente Güiraldez 2160, Ciudad Universitaria, CP 1428, Ciudad Autónoma de Buenos Aires, Argentina.
| | - Arturo Romano
- Laboratorio de Neurobiología de la Memoria, FBMC, FCEyN, UBA, IFIBYNE, CONICET, 2°piso, pabellón II, Intendente Güiraldez 2160, Ciudad Universitaria, CP 1428, Ciudad Autónoma de Buenos Aires, Argentina.
| | - Ramiro Freudenthal
- Laboratorio de Neurobiología de la Memoria, FBMC, FCEyN, UBA, IFIBYNE, CONICET, 2°piso, pabellón II, Intendente Güiraldez 2160, Ciudad Universitaria, CP 1428, Ciudad Autónoma de Buenos Aires, Argentina.
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40
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NF-κB mediated regulation of adult hippocampal neurogenesis: relevance to mood disorders and antidepressant activity. BIOMED RESEARCH INTERNATIONAL 2014; 2014:612798. [PMID: 24678511 PMCID: PMC3942292 DOI: 10.1155/2014/612798] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Accepted: 12/28/2013] [Indexed: 12/18/2022]
Abstract
Adult hippocampal neurogenesis is a peculiar form of process of neuroplasticity that in recent years has gained great attention for its potential implication in cognition and in emotional behavior in physiological conditions. Moreover, a vast array of experimental studies suggested that adult hippocampal neurogenesis may be altered in various neuropsychiatric disorders, including major depression, where its disregulation may contribute to cognitive impairment and/or emotional aspects associated with those diseases. An intriguing area of interest is the potential influence of drugs on adult neurogenesis. In particular, several psychoactive drugs, including antidepressants, were shown to positively modulate adult hippocampal neurogenesis. Among molecules which could regulate adult hippocampal neurogenesis the NF-κB family of transcription factors has been receiving particular attention from our and other laboratories. Herein we review recent data supporting the involvement of NF-κB signaling pathways in the regulation of adult neurogenesis and in the effects of drugs that are endowed with proneurogenic and antidepressant activity. The potential implications of these findings on our current understanding of the process of adult neurogenesis in physiological and pathological conditions and on the search for novel antidepressants are also discussed.
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41
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Roles for NF-κB and gene targets of NF-κB in synaptic plasticity, memory, and navigation. Mol Neurobiol 2013; 49:757-70. [PMID: 24122352 DOI: 10.1007/s12035-013-8555-y] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2013] [Accepted: 09/19/2013] [Indexed: 01/04/2023]
Abstract
Although traditionally associated with immune function, the transcription factor nuclear factor kappa B (NF-κB) has garnered much attention in recent years as an important regulator of memory. Specifically, research has found that NF-κB, localized in both neurons and glia, is activated during the induction of long-term potentiation (LTP), a paradigm of synaptic plasticity and correlate of memory. Further, experimental manipulation of NF-κB activation or its blockade results in altered memory and spatial navigation abilities. Genetic knockout of specific NF-κB subunits in mice results in memory alterations. Collectively, such data suggest that NF-κB may be a requirement for memory, although the direction of the response (i.e., memory enhancement or deficit) is inconsistent. A limited number of gene targets of NF-κB have been recently identified in neurons, including neurotrophic factors, calcium-regulating proteins, other transcription factors, and molecules associated with neuronal outgrowth and remodeling. In turn, several key molecules are activators of NF-κB, including protein kinase C and [Ca(++)]i. Thus, NF-κB signaling is complex and under the regulation of numerous proteins involved in activity-dependent synaptic plasticity. The purpose of this review is to highlight the literature detailing a role for NF-κB in synaptic plasticity, memory, and spatial navigation. Secondly, this review will synthesize the research evaluating gene targets of NF-κB in synaptic plasticity and memory. Although there is ample evidence to suggest a critical role for NF-κB in memory, our understanding of its gene targets in neurons is limited and only beginning to be appreciated.
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Crampton SJ, O'Keeffe GW. NF-κB: emerging roles in hippocampal development and function. Int J Biochem Cell Biol 2013; 45:1821-4. [PMID: 23764620 DOI: 10.1016/j.biocel.2013.05.037] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2013] [Revised: 05/22/2013] [Accepted: 05/31/2013] [Indexed: 11/26/2022]
Abstract
The nuclear factor kappa-B family of transcription factors have been extensively studied in the immune system where they function to orchestrate the molecular response to immune challenge. However in recent years, members of this family have also been shown to play physiological roles in the development and function of the nervous system. The two best studied members of the nuclear factor kappa-B family are the p65 and the p50 proteins. In this review, we outline recent developments regarding the functions of these proteins in regulating hippocampal neurogenesis, neuronal growth and learning and memory and discuss the implications of their dysregulation during the development of the nervous system.
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Affiliation(s)
- Sean J Crampton
- Department of Anatomy and Neuroscience, Biosciences Institute, University College Cork, Cork, Ireland
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