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Jovasevic V, Wood EM, Cicvaric A, Zhang H, Petrovic Z, Carboncino A, Parker KK, Bassett TE, Moltesen M, Yamawaki N, Login H, Kalucka J, Sananbenesi F, Zhang X, Fischer A, Radulovic J. Formation of memory assemblies through the DNA-sensing TLR9 pathway. Nature 2024; 628:145-153. [PMID: 38538785 PMCID: PMC10990941 DOI: 10.1038/s41586-024-07220-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Accepted: 02/21/2024] [Indexed: 04/05/2024]
Abstract
As hippocampal neurons respond to diverse types of information1, a subset assembles into microcircuits representing a memory2. Those neurons typically undergo energy-intensive molecular adaptations, occasionally resulting in transient DNA damage3-5. Here we found discrete clusters of excitatory hippocampal CA1 neurons with persistent double-stranded DNA (dsDNA) breaks, nuclear envelope ruptures and perinuclear release of histone and dsDNA fragments hours after learning. Following these early events, some neurons acquired an inflammatory phenotype involving activation of TLR9 signalling and accumulation of centrosomal DNA damage repair complexes6. Neuron-specific knockdown of Tlr9 impaired memory while blunting contextual fear conditioning-induced changes of gene expression in specific clusters of excitatory CA1 neurons. Notably, TLR9 had an essential role in centrosome function, including DNA damage repair, ciliogenesis and build-up of perineuronal nets. We demonstrate a novel cascade of learning-induced molecular events in discrete neuronal clusters undergoing dsDNA damage and TLR9-mediated repair, resulting in their recruitment to memory circuits. With compromised TLR9 function, this fundamental memory mechanism becomes a gateway to genomic instability and cognitive impairments implicated in accelerated senescence, psychiatric disorders and neurodegenerative disorders. Maintaining the integrity of TLR9 inflammatory signalling thus emerges as a promising preventive strategy for neurocognitive deficits.
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Affiliation(s)
- Vladimir Jovasevic
- Department of Pharmacology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Elizabeth M Wood
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Ana Cicvaric
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Hui Zhang
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Zorica Petrovic
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Anna Carboncino
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Kendra K Parker
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Thomas E Bassett
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Maria Moltesen
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- PROMEMO, Aarhus University, Aarhus, Denmark
- DANDRITE, Aarhus University, Aarhus, Denmark
| | - Naoki Yamawaki
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- PROMEMO, Aarhus University, Aarhus, Denmark
- DANDRITE, Aarhus University, Aarhus, Denmark
| | - Hande Login
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- PROMEMO, Aarhus University, Aarhus, Denmark
- DANDRITE, Aarhus University, Aarhus, Denmark
| | - Joanna Kalucka
- Department of Biomedicine, Aarhus University, Aarhus, Denmark
- PROMEMO, Aarhus University, Aarhus, Denmark
- DANDRITE, Aarhus University, Aarhus, Denmark
| | - Farahnaz Sananbenesi
- Department for Psychiatry and Psychotherapy, German Center for Neurodegenerative Diseases, University Medical Center, Göttingen, Germany
- Cluster of Excellence MBExC, University of Göttingen, Göttingen, Germany
| | - Xusheng Zhang
- Computational Genomics Core, Albert Einstein College of Medicine, Bronx, NY, USA
| | - Andre Fischer
- Department for Psychiatry and Psychotherapy, German Center for Neurodegenerative Diseases, University Medical Center, Göttingen, Germany
- Cluster of Excellence MBExC, University of Göttingen, Göttingen, Germany
| | - Jelena Radulovic
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY, USA.
- Department of Biomedicine, Aarhus University, Aarhus, Denmark.
- PROMEMO, Aarhus University, Aarhus, Denmark.
- DANDRITE, Aarhus University, Aarhus, Denmark.
- Department of Psychiatry and Behavioral Sciences, Psychiatry Research Institute Montefiore Einstein (PRIME), Albert Einstein College of Medicine, Bronx, NY, USA.
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2
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Knox D, Parikh V. Basal forebrain cholinergic systems as circuits through which traumatic stress disrupts emotional memory regulation. Neurosci Biobehav Rev 2024; 159:105569. [PMID: 38309497 PMCID: PMC10948307 DOI: 10.1016/j.neubiorev.2024.105569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2023] [Revised: 01/25/2024] [Accepted: 01/29/2024] [Indexed: 02/05/2024]
Abstract
Contextual and spatial systems facilitate changes in emotional memory regulation brought on by traumatic stress. Cholinergic basal forebrain (chBF) neurons provide input to contextual/spatial systems and although chBF neurons are important for emotional memory, it is unknown how they contribute to the traumatic stress effects on emotional memory. Clusters of chBF neurons that project to the prefrontal cortex (PFC) modulate fear conditioned suppression and passive avoidance, while clusters of chBF neurons that project to the hippocampus (Hipp) and PFC (i.e. cholinergic medial septum and diagonal bands of Broca (chMS/DBB neurons) are critical for fear extinction. Interestingly, neither Hipp nor PFC projecting chMS/DBB neurons are critical for fear extinction. The retrosplenial cortex (RSC) is a contextual/spatial memory system that receives input from chMS/DBB neurons, but whether this chMS/DBB-RSC circuit facilitates traumatic stress effects on emotional memory remain unexplored. Traumatic stress leads to neuroinflammation and the buildup of reactive oxygen species. These two molecular processes may converge to disrupt chBF circuits enhancing the impact of traumatic stress on emotional memory.
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Affiliation(s)
- Dayan Knox
- Department of Psychological and Brain Sciences, Behavioral Neuroscience Program, University of Delaware, Newark, DE, USA.
| | - Vinay Parikh
- Department of Psychology, Neuroscience Program, Temple University, Philadelphia, PA, USA
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3
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Dmytriv TR, Tsiumpala SA, Semchyshyn HM, Storey KB, Lushchak VI. Mitochondrial dysfunction as a possible trigger of neuroinflammation at post-traumatic stress disorder (PTSD). Front Physiol 2023; 14:1222826. [PMID: 37942228 PMCID: PMC10628526 DOI: 10.3389/fphys.2023.1222826] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 10/09/2023] [Indexed: 11/10/2023] Open
Abstract
Post-traumatic stress disorder (PTSD) is a neuropsychiatric disorder that occurs in approximately 15% of people as a result of some traumatic events. The main symptoms are re-experiencing and avoidance of everything related to this event and hyperarousal. The main component of the pathophysiology of PTSD is an imbalance in the functioning of the hypothalamic-pituitary-adrenal axis (HPA) and development of neuroinflammation. In parallel with this, mitochondrial dysfunction is observed, as in many other diseases. In this review, we focus on the question how mitochondria may be involved in the development of neuroinflammation and its maintaining at PTSD. First, we describe the differences in the operation of the neuro-endocrine system during stress versus PTSD. We then show changes in the activity/expression of mitochondrial proteins in PTSD and how they can affect the levels of hormones involved in PTSD development, as well as how mitochondrial damage/pathogen-associated molecule patterns (DAMPs/PAMPs) trigger development of inflammation. In addition, we examine the possibility of treating PTSD-related inflammation using mitochondria as a target.
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Affiliation(s)
- Tetiana R. Dmytriv
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Sviatoslav A. Tsiumpala
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Halyna M. Semchyshyn
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Kenneth B. Storey
- Department of Biology, Institute of Biochemistry, Carleton University, Ottawa, ON, Canada
| | - Volodymyr I. Lushchak
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
- Research and Development University, Ivano-Frankivsk, Ukraine
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4
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Lushchak O, Orru M, Strilbytska O, Berezovskyi V, Cherkas A, Storey KB, Bayliak M. Metabolic and immune dysfunctions in post-traumatic stress disorder: what can we learn from animal models? EXCLI JOURNAL 2023; 22:928-945. [PMID: 38023568 PMCID: PMC10630527 DOI: 10.17179/excli2023-6391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Accepted: 08/29/2023] [Indexed: 12/01/2023]
Abstract
Highly stressful experiences such as terrorist attacks, domestic and sexual violence may lead to persistent pathological symptoms such as those seen in posttraumatic stress disorder (PTSD). There is growing evidence of multiple metabolic and immune disorders underlying the etiology and maintenance of PTSD. However, changes in the functioning of various systems and organs associated with PTSD are not well understood. Studies of reliable animal models is one of the effective scientific tools that can be used to gain insight into the role of metabolism and immunity in the comorbidity associated with PTSD. Since much progress has been made using animal models to understand mechanisms of PTSD, we summarized metabolic and immune dysfunction in mice and humans to compare certain outcomes associated with PTSD. The systemic effects of PTSD include chronic activation of the sympathetic nervous system (psycho-emotional stress), that leads to impairment of the function of the immune system, increased release of stress hormones, and metabolic changes. We discuss PTSD as a multisystem disease with its neurological, immunological, and metabolic components.
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Affiliation(s)
- Oleh Lushchak
- Precarpathian National University, Ivano-Frankivsk, Ukraine
- Research and Development University, Ivano-Frankivsk, Ukraine
| | - Marco Orru
- Precarpathian National University, Ivano-Frankivsk, Ukraine
| | | | | | - Andriy Cherkas
- Research and Development University, Ivano-Frankivsk, Ukraine
| | | | - Maria Bayliak
- Precarpathian National University, Ivano-Frankivsk, Ukraine
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5
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Loneliness in Posttraumatic Stress Disorder: A Neglected Factor in Accelerated Aging? JOURNAL OF AGEING AND LONGEVITY 2022; 2:326-339. [PMID: 36567873 PMCID: PMC9783482 DOI: 10.3390/jal2040027] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Prior research suggests that people with Posttraumatic Stress Disorder (PTSD) may experience a form of accelerated biological aging. In other populations, loneliness has been shown to elevate risk for many of the same components of accelerated biological aging, and other deleterious outcomes, as seen in people with PTSD. Although standard diagnostic criteria for PTSD include "feelings of detachment or estrangement from others", the relationship of such feelings to the concept of loneliness remains uncertain, in par potentially due to a failure to distinguish between loneliness versus objective social isolation. In order to catalyze wider research attention to loneliness in PTSD, and the potential contribution to accelerated biological aging, the present paper provides three components: (1) a conceptual overview of the relevant constructs and potential interrelationships, (2) a review of the limited extant empirical literature, and (3) suggested directions for future research. The existing empirical literature is too small to support many definitive conclusions, but there is evidence of an association between loneliness and symptoms of PTSD. The nature of this association may be complex, and the causal direction(s) uncertain. Guided by the conceptual overview and review of existing literature, we also highlight key areas for further research. The ultimate goal of this line of work is to elucidate mechanisms underlying any link between loneliness and accelerated aging in PTSD, and to develop, validate, and refine prevention and treatment efforts.
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6
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Adverse Childhood Events, Post-Traumatic Stress Disorder, Infectious Encephalopathies and Immune-Mediated Disease. Healthcare (Basel) 2022; 10:healthcare10061127. [PMID: 35742178 PMCID: PMC9222834 DOI: 10.3390/healthcare10061127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 06/14/2022] [Accepted: 06/15/2022] [Indexed: 11/16/2022] Open
Abstract
Adverse Childhood Events (ACE), Post-Traumatic Stress Disorder (PTSD), and infectious encephalopathies are associated with immune-mediated diseases. Data supporting this are reviewed, and an integrated hypothesis is provided. All three can be associated with intrusive symptoms and temporal lobe pathology. ACE and PTSD are accompanied by an impaired mental capacity to differentiate external danger vs. safety. Infectious encephalopathies are accompanied by a failure of adaptive immunity and an impaired immune capacity to differentiate internal danger vs. safety. All three conditions are associated with impairments to differentiate danger vs. safety and adapt effectively. There are reciprocal interactions between ACE, PTSD, and infectious encephalopathies with accompanying persistent immune activation. This is associated with immune dysregulation, chronic hyperarousal, activation of the stress response, and impairments of the fear recognition and response neural circuits, hypothalamic–pituitary–adrenal axis, amygdala, and hippocampus. The pathophysiological processes can result in a broad spectrum of chronic neuropsychiatric and somatic symptoms and diseases. Understanding the psychodynamic, neurological, neuroimmune, inflammatory and autoimmune components of this interactive process expands the effective treatment opportunities.
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7
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Neuroinflammation in Post-Traumatic Stress Disorder. Biomedicines 2022; 10:biomedicines10050953. [PMID: 35625690 PMCID: PMC9138406 DOI: 10.3390/biomedicines10050953] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/15/2022] [Accepted: 04/18/2022] [Indexed: 12/07/2022] Open
Abstract
Post-traumatic stress disorder (PTSD) is a well-known mental illness, which is caused by various stressors, including memories of past physical assaults and psychological pressure. It is diagnosed as a mental and behavioral disorder, but increasing evidence is linking it to the immune system and inflammatory response. Studies on the relationship between inflammation and PTSD revealed that patients with PTSD had increased levels of inflammatory cytokine biomarkers, such as interleukin-1, interleukin-6, tumor necrosis factor-α, nuclear factor-κB, and C-reactive protein, compared with healthy controls. In addition, animal model experiments imitating PTSD patients suggested the role of inflammation in the pathogenesis and pathophysiology of PTSD. In this review, we summarize the definition of PTSD and its association with increased inflammation, its mechanisms, and future predictable diseases and treatment possibilities. We also discuss anti-inflammatory treatments to address inflammation in PTSD.
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8
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Long KLP, Chao LL, Kazama Y, An A, Hu KY, Peretz L, Muller DCY, Roan VD, Misra R, Toth CE, Breton JM, Casazza W, Mostafavi S, Huber BR, Woodward SH, Neylan TC, Kaufer D. Regional gray matter oligodendrocyte- and myelin-related measures are associated with differential susceptibility to stress-induced behavior in rats and humans. Transl Psychiatry 2021; 11:631. [PMID: 34903726 PMCID: PMC8668977 DOI: 10.1038/s41398-021-01745-5] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2021] [Revised: 10/30/2021] [Accepted: 11/23/2021] [Indexed: 12/23/2022] Open
Abstract
Individual reactions to traumatic stress vary dramatically, yet the biological basis of this variation remains poorly understood. Recent studies demonstrate the surprising plasticity of oligodendrocytes and myelin with stress and experience, providing a potential mechanism by which trauma induces aberrant structural and functional changes in the adult brain. In this study, we utilized a translational approach to test the hypothesis that gray matter oligodendrocytes contribute to traumatic-stress-induced behavioral variation in both rats and humans. We exposed adult, male rats to a single, severe stressor and used a multimodal approach to characterize avoidance, startle, and fear-learning behavior, as well as oligodendrocyte and myelin basic protein (MBP) content in multiple brain areas. We found that oligodendrocyte cell density and MBP were correlated with behavioral outcomes in a region-specific manner. Specifically, stress-induced avoidance positively correlated with hippocampal dentate gyrus oligodendrocytes and MBP. Viral overexpression of the oligodendrogenic factor Olig1 in the dentate gyrus was sufficient to induce an anxiety-like behavioral phenotype. In contrast, contextual fear learning positively correlated with MBP in the amygdala and spatial-processing regions of the hippocampus. In a group of trauma-exposed US veterans, T1-/T2-weighted magnetic resonance imaging estimates of hippocampal and amygdala myelin associated with symptom profiles in a region-specific manner that mirrored the findings in rats. These results demonstrate a species-independent relationship between region-specific, gray matter oligodendrocytes and differential behavioral phenotypes following traumatic stress exposure. This study suggests a novel mechanism for brain plasticity that underlies individual variance in sensitivity to traumatic stress.
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Affiliation(s)
- Kimberly L P Long
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
- Department of Psychiatry and Behavioral Sciences, University of California, SanFrancisco, San Francisco, CA, 94143, USA
| | - Linda L Chao
- Department of Radiology & Biomedical Imaging, University of California, San Francisco, San Francisco, CA, 94143, USA
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, San Francisco, CA, 94143, USA
| | - Yurika Kazama
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Anjile An
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
- Division of Biostatistics, Department of Population Health Sciences, Weill Cornell Medicine, New York, NY, 10065, USA
| | - Kelsey Y Hu
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Lior Peretz
- Department of Molecular, Cellular, and Developmental Biology, University of California, Los Angeles, Los Angeles, CA, 90095, USA
| | - Dyana C Y Muller
- Department of Computer Science, University of Arizona, Tucson, AZ, 85721, USA
| | - Vivian D Roan
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Rhea Misra
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Claire E Toth
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
| | - Jocelyn M Breton
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA
- Department of Psychiatry, Columbia University, New York, NY, 10027, USA
| | - William Casazza
- Department of Statistics and Department of Medical Genetics, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
| | - Sara Mostafavi
- Department of Statistics and Department of Medical Genetics, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada
- Canadian Institute for Advanced Research, Toronto, ON, M5G 1M1, Canada
| | - Bertrand R Huber
- Department of Neurology, Boston University, Boston, MA, 02215, USA
- National Center for PTSD, VA New England Health Care System, Boston, MA, 02130, USA
| | - Steven H Woodward
- National Center for PTSD, VA Palo Alto Health Care System, Palo Alto, CA, 94304, USA
| | - Thomas C Neylan
- Department of Psychiatry and Behavioral Sciences, University of California, San Francisco, San Francisco, CA, 94143, USA
- San Francisco VA Health Care System, San Francisco, CA, 94121, USA
| | - Daniela Kaufer
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, 94720, USA.
- Canadian Institute for Advanced Research, Toronto, ON, M5G 1M1, Canada.
- Department of Integrative Biology, University of California, Berkeley, Berkeley, CA, 94720, USA.
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9
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Kaufmann FN, Lago N, Alí-Ruiz D, Jansen K, Souza LDM, Silva RA, Lara DR, Ghisleni G, Peluffo H, Kaster MP. Sex-dependent role of CD300f immune receptor in generalized anxiety disorder. Brain Behav Immun Health 2021; 11:100191. [PMID: 34589728 PMCID: PMC8474181 DOI: 10.1016/j.bbih.2020.100191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2020] [Revised: 12/01/2020] [Accepted: 12/03/2020] [Indexed: 11/25/2022] Open
Abstract
Generalized Anxiety Disorder (GAD) presents a high prevalence in the population, leading to distress and disability. Immune system alterations have been associated with anxiety-related behaviors in rodents and GAD patients. CD300f immune receptors are highly expressed in microglia and participate not only in the modulation of immune responses but also in pruning and reshaping synapses. It was recently demonstrated that CD300f might be influential in the pathogenesis of depression in a sex-dependent manner. Here, we evaluated the role of CD300f immune receptor in anxiety, using CD300f knockout mice (CD300f-/-) and patients with GAD. We observed that male CD300f-/- mice had numerous behavioral changes associated with a low-anxiety phenotype, including increased open field central locomotion and rearing behaviors, more exploration in the open arms of the elevated plus-maze test, and decreased latency to eat in the novelty suppressed feeding test. In a cross-sectional population-based study, including 1111 subjects, we evaluated a common single-nucleotide polymorphism rs2034310 (C/T) in the cytoplasmatic tail of CD300f gene in individuals with GAD. Notably, we observed that the T allele of the rs2034310 polymorphism conferred protection against GAD in men, even after adjusting for confounding variables. Overall, our data demonstrate that CD300f immune receptors are involved in the modulation of pathological anxiety behaviors in a sex-dependent manner. The biological basis of these sex differences is still poorly understood, but it may provide significant clues regarding the neuropathophysiological mechanisms of GAD and can pave the way for future specific pharmacological interventions.
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Affiliation(s)
- Fernanda N Kaufmann
- Department of Psychiatry and Neuroscience, Faculty of Medicine and CERVO Brain Research Center, Université Laval, Quebec City, Canada
| | - Natalia Lago
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Daniela Alí-Ruiz
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay
| | - Karen Jansen
- Department of Life and Health Sciences, Catholic University of Pelotas, Rio Grande do Sul, Brazil
| | - Luciano D M Souza
- Department of Life and Health Sciences, Catholic University of Pelotas, Rio Grande do Sul, Brazil
| | - Ricardo A Silva
- Department of Life and Health Sciences, Catholic University of Pelotas, Rio Grande do Sul, Brazil
| | - Diogo R Lara
- Department of Cellular and Molecular Biology, Pontifical Catholic University of Rio Grande do Sul, Porto Alegre, Brazil
| | - Gabriele Ghisleni
- Department of Life and Health Sciences, Catholic University of Pelotas, Rio Grande do Sul, Brazil
| | - Hugo Peluffo
- Neuroinflammation and Gene Therapy Laboratory, Institut Pasteur de Montevideo, Montevideo, Uruguay.,Departamento de Histología y Embriología, Facultad de Medicina, Universidad de la República, Montevideo, Uruguay
| | - Manuella P Kaster
- Department of Biochemistry, Federal University of Santa Catarina, Florianópolis, Santa Catarina, Brazil
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Komleva YK, Lopatina OL, Gorina IV, Shuvaev AN, Chernykh A, Potapenko IV, Salmina AB. NLRP3 deficiency-induced hippocampal dysfunction and anxiety-like behavior in mice. Brain Res 2021; 1752:147220. [PMID: 33358726 DOI: 10.1016/j.brainres.2020.147220] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 11/17/2020] [Accepted: 11/25/2020] [Indexed: 01/09/2023]
Abstract
Neuroinflammation has been classified as a trigger of behavioral alterations and cognitive impairments in many neurological conditions, including Alzheimer's disease, major depression, anxiety and others. Regardless of the cause of neuroinflammation, key molecules, which sense neuropathological conditions, are intracellular multiprotein signaling inflammasomes. Increasing evidence shows that the inflammatory response, mediated by activated nucleotide-binding oligomerization domain-, leucine-rich repeat- and pyrin domain-containing 3 (NLRP3) inflammasomes, is associated with the onset and progression of a wide range of diseases of the CNS. However, whether the NLRP3 inflammasome in the CNS is involved in the learning, development of anxiety and adult neurogenesis remains elusive. Therefore, the present study was designed to assess NLRP3 inflammasome contribution in anxiety and reveal its potential involvement in the experimental acquisition of fear responses and hippocampal neurogenesis. Behavioral, immunohistochemical and electrophysiological alterations were measured to evaluate role of neuroinflammation in the limbic system of mice. In this study, we describe interrelated neurophysiological mechanisms, which culminate in absence of NLRP3 inflammasome in young 4 months mice. These include the following: anxious behavior and deterioration in learning and memory of fear conditioning; impairment of adult neurogenesis; reduction and altered morphology of astrocytes in the brain; hyperexcitability in basolateral amygdala (BLA); impaired activation in axons of pyramidal cells of CA1 hippocampal zone in NLRP3 KO mice particularly via the Schaffer collateral pathway; and impaired synaptic transduction in pyramidal cells mediated by an embarrassment of neurotransmitter release from presynaptic site in CA3 hippocampal zone. The present study has demonstrated the novel findings that basal level of NLRP3 inflammasome in the brain of young mice is required for conditioning-induced plasticity in the ventral hippocampus and the basolateral amygdala. The deletion of NLRP3 impair synaptic transduction and caused anxiety-like behavior and labored fear learning, suggesting that low grade inflammation, mediated by NLRP3 expression, play a key role in memory consolidation.
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Affiliation(s)
- Yulia K Komleva
- Depatment of Biochemistry, Medical, Pharmaceutical & Toxicological Chemistry, Krasnoyarsk State Medical University named after Prof. V.F. Voino-Yasenetsky, Krasnoyarsk, Russia; Research Institute of Molecular Medicine and Pathobiochemistry, Russia.
| | - Olga L Lopatina
- Depatment of Biochemistry, Medical, Pharmaceutical & Toxicological Chemistry, Krasnoyarsk State Medical University named after Prof. V.F. Voino-Yasenetsky, Krasnoyarsk, Russia; Research Institute of Molecular Medicine and Pathobiochemistry, Russia
| | - Iana V Gorina
- Depatment of Biochemistry, Medical, Pharmaceutical & Toxicological Chemistry, Krasnoyarsk State Medical University named after Prof. V.F. Voino-Yasenetsky, Krasnoyarsk, Russia
| | - Anton N Shuvaev
- Research Institute of Molecular Medicine and Pathobiochemistry, Russia
| | - Anatoly Chernykh
- Research Institute of Molecular Medicine and Pathobiochemistry, Russia
| | - Ilia V Potapenko
- Depatment of Biochemistry, Medical, Pharmaceutical & Toxicological Chemistry, Krasnoyarsk State Medical University named after Prof. V.F. Voino-Yasenetsky, Krasnoyarsk, Russia
| | - Alla B Salmina
- Depatment of Biochemistry, Medical, Pharmaceutical & Toxicological Chemistry, Krasnoyarsk State Medical University named after Prof. V.F. Voino-Yasenetsky, Krasnoyarsk, Russia; Research Institute of Molecular Medicine and Pathobiochemistry, Russia
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11
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Ingegnoli F, Buoli M, Antonucci F, Coletto LA, Esposito CM, Caporali R. The Link Between Autonomic Nervous System and Rheumatoid Arthritis: From Bench to Bedside. Front Med (Lausanne) 2020; 7:589079. [PMID: 33365319 PMCID: PMC7750536 DOI: 10.3389/fmed.2020.589079] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 10/30/2020] [Indexed: 12/25/2022] Open
Abstract
Neuronal stimulation is an emerging field of research focused on the management and treatment of various diseases through the reestablishment of physiological homeostasis. Electrical vagus nerve stimulation has recently been proposed as a revolutionary therapeutic option for rheumatoid arthritis (RA) in combination with or even as a replacement for conventional and biological drugs. In the past few years, disruption of the autonomic system has been linked to RA onset and activity. Novel research on the link between the autonomic nervous system and the immune system (immune-autonomics) has paved the way for the development of innovative RA management strategies. Clinical evidence supports this approach. Cardiovascular involvement, in terms of reduced baroreflex sensitivity and heart rate variability-derived indices, and mood disorders, common comorbidities in patients with RA, have been linked to autonomic nervous system dysfunction, which in turn is influenced by increased levels of circulating pro-inflammatory cytokines. This narrative review provides an overview of the autonomic nervous system and RA connection, discussing most of the common cardiac and mental health-related RA comorbidities and their potential relationships to systemic and joint inflammation.
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Affiliation(s)
- Francesca Ingegnoli
- Division of Clinical Rheumatology, Gaetano Pini Hospital, Milan, Italy.,Department of Clinical Sciences and Community Health, Research Center for Adult and Pediatric Rheumatic Diseases, Università degli Studi di Milano, Milan, Italy
| | - Massimiliano Buoli
- Department of Neurosciences and Mental Health, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Ca'Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Flavia Antonucci
- Department of Medical Biotechnology and Translational Medicine (BIOMETRA), Università degli Studi di Milano, Milan, Italy
| | - Lavinia Agra Coletto
- Division of Clinical Rheumatology, Gaetano Pini Hospital, Milan, Italy.,Department of Clinical Sciences and Community Health, Research Center for Adult and Pediatric Rheumatic Diseases, Università degli Studi di Milano, Milan, Italy
| | - Cecilia Maria Esposito
- Department of Neurosciences and Mental Health, Fondazione Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) Ca'Granda Ospedale Maggiore Policlinico, Milan, Italy.,Department of Pathophysiology and Transplantation, Università degli Studi di Milano, Milan, Italy
| | - Roberto Caporali
- Division of Clinical Rheumatology, Gaetano Pini Hospital, Milan, Italy.,Department of Clinical Sciences and Community Health, Research Center for Adult and Pediatric Rheumatic Diseases, Università degli Studi di Milano, Milan, Italy
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12
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Qiu ZK, Liu X, Chen Y, Wu RJ, Guan SF, Pan YY, Wang QB, Tang D, Zhu T, Chen JS. Translocator protein 18 kDa: a potential therapeutic biomarker for post traumatic stress disorder. Metab Brain Dis 2020; 35:695-707. [PMID: 32172519 DOI: 10.1007/s11011-020-00548-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/10/2019] [Accepted: 02/10/2020] [Indexed: 11/11/2022]
Abstract
Post traumatic stress disorder (PTSD) is widely regarded as a stress-related and trauma disorder. The symptoms of PTSD are characterized as a spectrum of vulnerabilities after the exposure to an extremely traumatic stressor. Considering as one of complex mental disorders, little progress has been made toward its diagnostic biomarkers, despite the involvement of PTSD has been studied. Many studies into the underlying neurobiology of PTSD implicated the dysfunction of neurosteroids biosynthesis and neuorinflammatory processes. Translocator protein 18 kDa (TSPO) has been considered as one of the promising therapeutic biomarkers for neurological stress disorders (like PTSD, depression, anxiety, et al) without the benzodiazepine-like side effects. This protein participates in the formation of neurosteroids and modulation of neuroinflammation. The review outlines current knowledge involving the role of TSPO in the neuropathology of PTSD and the anti-PTSD-like effects of TSPO ligands.
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Affiliation(s)
- Zhi-Kun Qiu
- Pharmaceutical Department of The First Affiliated Hospital of Guangdong Pharmaceutical University, Clinical Pharmacy Department of Guangdong Pharmaceutical University, Guangzhou, 510080, People's Republic of China
| | - Xu Liu
- Pharmacy Department of Medical Supplies Center of General Hospital of Chinese People's Armed Police Forces, Beijing, 100039, People's Republic of China
| | - Yong Chen
- Pharmaceutical Department of The First Affiliated Hospital of Guangdong Pharmaceutical University, Clinical Pharmacy Department of Guangdong Pharmaceutical University, Guangzhou, 510080, People's Republic of China
| | - Rong-Jia Wu
- Pharmaceutical Department of The First Affiliated Hospital of Guangdong Pharmaceutical University, Clinical Pharmacy Department of Guangdong Pharmaceutical University, Guangzhou, 510080, People's Republic of China
| | - Shi-Feng Guan
- Pharmaceutical Department of The First Affiliated Hospital of Guangdong Pharmaceutical University, Clinical Pharmacy Department of Guangdong Pharmaceutical University, Guangzhou, 510080, People's Republic of China
| | - Yun-Yun Pan
- Pharmaceutical Department of The First Affiliated Hospital of Guangdong Pharmaceutical University, Clinical Pharmacy Department of Guangdong Pharmaceutical University, Guangzhou, 510080, People's Republic of China
| | - Qian-Bo Wang
- Pharmaceutical Department of The First Affiliated Hospital of Guangdong Pharmaceutical University, Clinical Pharmacy Department of Guangdong Pharmaceutical University, Guangzhou, 510080, People's Republic of China
| | - Dan Tang
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Tao Zhu
- Guangdong Provincial Key Laboratory of Pharmacodynamic Constituents of TCM and New Drugs Research, College of Pharmacy, Jinan University, Guangzhou, 510632, People's Republic of China
| | - Ji-Sheng Chen
- Pharmaceutical Department of The First Affiliated Hospital of Guangdong Pharmaceutical University, Clinical Pharmacy Department of Guangdong Pharmaceutical University, Guangzhou, 510080, People's Republic of China.
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13
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Vaknine S, Soreq H. Central and peripheral anti-inflammatory effects of acetylcholinesterase inhibitors. Neuropharmacology 2020; 168:108020. [PMID: 32143069 DOI: 10.1016/j.neuropharm.2020.108020] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 02/09/2020] [Accepted: 02/25/2020] [Indexed: 12/31/2022]
Abstract
Acetylcholinesterase (AChE) inhibitors modulate acetylcholine hydrolysis and hence play a key role in determining the cholinergic tone and in implementing its impact on the cholinergic blockade of inflammatory processes. Such inhibitors may include rapidly acting small molecule AChE-blocking drugs and poisonous anti-AChE insecticides or war agent inhibitors which penetrate both body and brain. Notably, traumatized patients may be hyper-sensitized to anti-AChEs due to their impaired cholinergic tone, higher levels of circulation pro-inflammatory cytokines and exacerbated peripheral inflammatory responses. Those largely depend on the innate-immune system yet reach the brain via vagus pathways and/or disrupted blood-brain-barrier. Other regulators of the neuro-inflammatory cascade are AChE-targeted microRNAs (miRs) and synthetic chemically protected oligonucleotide blockers thereof, whose size prevents direct brain penetrance. Nevertheless, these larger molecules may exert parallel albeit slower inflammatory regulating effects on brain and body tissues. Additionally, oligonucleotide aptamers interacting with innate immune Toll-Like Receptors (TLRs) may control inflammation through diverse routes and in different rates. Such aptamers may compete with the action of both small molecule inhibitors and AChE-inhibiting miRs in peripheral tissues including muscle and intestine. However, rapid adaptation processes, visualized in neuromuscular junctions enable murine survival under otherwise lethal anti-cholinesterase exposure; and both miR inhibitors and TLR-modulating aptamers may exert body-brain signals protecting experimental mice from acute inflammation. The complex variety of AChE inhibiting molecules identifies diverse body-brain communication pathways which may rapidly induce long-lasting central reactions to peripheral stressful and inflammatory insults in both mice and men. This article is part of the special issue entitled 'Acetylcholinesterase Inhibitors: From Bench to Bedside to Battlefield'.
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Affiliation(s)
- Shani Vaknine
- The Edmond and Lily Safra Center of Brain Science, The Life Sciences Institute, The Hebrew University of Jerusalem, 9190401, Israel
| | - Hermona Soreq
- The Edmond and Lily Safra Center of Brain Science, The Life Sciences Institute, The Hebrew University of Jerusalem, 9190401, Israel.
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14
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Downs BW, Blum K, Bagchi D, Kushner S, Bagchi M, Galvin JM, Lewis M, Siwicki D, Brewer R, Boyett B, Baron D, Giordano J, Badgaiyan RD. Molecular neuro-biological and systemic health benefits of achieving dopamine homeostasis in the face of a catastrophic pandemic (COVID- 19): A mechanistic exploration. ACTA ACUST UNITED AC 2020; 7. [PMID: 32934824 DOI: 10.15761/jsin.1000228] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
In the face of the global pandemic of COVID 19, approaching 1.75 Million infected worldwide (4/12/2020) and associated mortality (over 108, 000 as of 4/12/2020) as well-as other catastrophic events including the opioid crisis, a focus on brain health seems prudent [1] (https://www.coronavirus.gov). This manuscript reports on the systemic benefits of restoring and achieving dopamine homeostasis to reverse and normalize thoughts and behaviors of Reward Deficiency Syndrome (RDS) dysfunctional conditions and their effects on behavioral physiology; function of reward genes; and focuses on digestive, immune, eye health, and the constellation of symptomatic behaviors. The role of nutrigenomic interventions on restoring normal brain functions and its benefits on these systems will be discussed. We demonstrate that modulation of dopamine homeostasis using nutrigenomic dopamine agonists, instead of pharmaceutical interventions, is achievable. The allied interlinking with diverse chronic diseases and disorders, roles of free radicals and incidence of anaerobic events have been extensively highlighted. In conjunction, the role of dopamine in aspects of sleep, rapid eye movement and waking are extensively discussed. The integral aspects of food indulgence, the influence of taste sensations, and gut-brain signaling are also discussed along with a special emphasis on ocular health. The detailed mechanistic insight of dopamine, immune competence and the allied aspects of autoimmune disorders are also highlighted. Finally, the integration of dopamine homeostasis utilizing a patented gene test and a research-validated nutrigenomic intervention are presented. Overall, a cutting-edge nutrigenomic intervention could prove to be a technological paradigm shift in our understanding of the extent to which achieving dopamine homeostasis will benefit overall health.
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Affiliation(s)
- B W Downs
- Department of Nutrigenomics Research, Victory Nutrition International, Inc., Lederach, PA, USA
| | - K Blum
- Department of Nutrigenomics Research, Victory Nutrition International, Inc., Lederach, PA, USA.,Western University, Health Sciences, Graduate School of Biomedical Sciences, Pomona, CA, USA.,Division of Neuroscience and Addiction Research, Pathway Healthcare, Birmingham, AL, USA.,Eotvos Loránd University, Institute of Psychology, Budapest, Hungary.,Department of Psychiatry, Wright State University Boonshoft School of Medicine and Dayton VA Medical Center, Dayton, OH, USA.,Division of Precision Nutrition, GARS IP., LLC, Hollywood Fl., USA, & Geneus Health, LLC., San Antonio, TX, USA
| | - D Bagchi
- Department of Nutrigenomics Research, Victory Nutrition International, Inc., Lederach, PA, USA.,Department of Pharmacological & Pharmaceutical Sciences, University of Houston College of Pharmacy, Houston, TX, USA
| | - S Kushner
- ALM Research & Development, Oldsmar, FL, USA
| | | | - J M Galvin
- Vitality Medical Wellness Institute, PLLC, Charlotte, NC, USA
| | - McG Lewis
- Departments of Anatomy & Psychiatry, Howard University, School of Medicine, Washington, D., USA
| | - D Siwicki
- Division of Precision Nutrition, GARS IP., LLC, Hollywood Fl., USA, & Geneus Health, LLC., San Antonio, TX, USA
| | - R Brewer
- Division of Precision Nutrition, GARS IP., LLC, Hollywood Fl., USA, & Geneus Health, LLC., San Antonio, TX, USA
| | - B Boyett
- Division of Neuroscience and Addiction Research, Pathway Healthcare, Birmingham, AL, USA
| | - D Baron
- Western University, Health Sciences, Graduate School of Biomedical Sciences, Pomona, CA, USA
| | - J Giordano
- National Institute of Holistic and Addiction Studies, Davie, FL, USA
| | - R D Badgaiyan
- Department of Psychiatry, ICHAN School of Medicine, Mount Sinai, New York, NYC. & Department of Psychiatry, South Texas Veteran Health Care System, Audie L. Murphy Memorial VA Hospital, San Antonio, TX, Long School of Medicine, University of Texas Medical Center, San Antonio, TX, USA
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15
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Waheed A, Dalton B, Wesemann U, Ibrahim MAA, Himmerich H. A Systematic Review of Interleukin-1β in Post-Traumatic Stress Disorder: Evidence from Human and Animal Studies. J Interferon Cytokine Res 2019; 38:1-11. [PMID: 29328883 DOI: 10.1089/jir.2017.0088] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Pro-inflammatory cytokines, such as interleukin (IL)-1β, have been implicated as underlying pathophysiological mechanisms and potential biomarkers of post-traumatic stress disorder (PTSD). This systematic review examines data regarding IL-1β production/concentration in human and animal studies of PTSD. In accordance with PRISMA guidelines, relevant articles from PubMed were reviewed from inception until July 10, 2017. Nineteen studies were eligible for inclusion. Animal studies demonstrated increased hippocampal IL-1β in rodent models of PTSD. Several immunomodulatory drugs were shown to reduce elevated IL-1β levels and anxiety-like behaviors in animals. Human cross-sectional studies showed contradictory results; serum and plasma IL-1β concentrations in PTSD patients were either elevated or did not differ from control groups. In vitro IL-1β production by stimulated cells demonstrated no difference between PTSD and control participants, although spontaneous in vitro production of IL-1β was increased in the PTSD group. The findings from 2 longitudinal studies were inconsistent. Given the conflicting findings, it is premature to consider IL-1β as a biomarker of PTSD. Anti-inflammatory agents may reduce IL-1β, and be a potential basis for future therapeutic agents in PTSD treatment. More longitudinal research is needed to better understand the role of IL-1β in the development and/or maintenance of PTSD.
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Affiliation(s)
- Aysha Waheed
- 1 Department of Psychological Medicine, King's College London , London, United Kingdom .,2 Faculty of Life Sciences and Medicine, King's College London , London, United Kingdom
| | - Bethan Dalton
- 1 Department of Psychological Medicine, King's College London , London, United Kingdom
| | - Ulrich Wesemann
- 3 Department of Psychiatry, Psychotherapy and Psychotraumatology, Bundeswehr Hospital , Berlin, Germany
| | - Mohammad A A Ibrahim
- 4 Department of Immunological Medicine and Allergy, King's Health Partners, King's College Hospital , London, United Kingdom
| | - Hubertus Himmerich
- 1 Department of Psychological Medicine, King's College London , London, United Kingdom
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16
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Using Next-Generation Sequencing Transcriptomics To Determine Markers of Post-traumatic Symptoms: Preliminary Findings from a Post-deployment Cohort of Soldiers. G3-GENES GENOMES GENETICS 2019; 9:463-471. [PMID: 30622122 PMCID: PMC6385974 DOI: 10.1534/g3.118.200516] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Post-traumatic stress disorder is a concerning psychobehavioral disorder thought to emerge from the complex interaction between genetic and environmental factors. For soldiers exposed to combat, the risk of developing this disorder is twofold and diagnosis is often late, when much sequela has set in. To be able to identify and diagnose in advance those at “risk” of developing post-traumatic stress disorder, would greatly taper the gap between late sequelae and treatment. Therefore, this study sought to determine whether the transcriptome can be used to track the development of post-traumatic stress disorder in this unique and susceptible cohort of individuals. Gene expression levels in peripheral blood samples from 85 Canadian infantry soldiers (n = 58 participants negative for symptoms of post-traumatic stress disorder and n = 27 participants with symptoms of post-traumatic stress disorder) following return from deployment to Afghanistan were determined using RNA sequencing technology. Count-based gene expression quantification, normalization and differential analysis (with thorough correction for confounders) revealed genes associated to PTSD; LRP8 and GOLM1. These preliminary results provide a proof-of-principle for the diagnostic utility of blood-based gene expression profiles for tracking symptoms of post-traumatic stress disorder in soldiers returning from tour. It is also the first to report transcriptome-wide expression profiles alongside a post-traumatic symptom checklist.
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17
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Mellon SH, Gautam A, Hammamieh R, Jett M, Wolkowitz OM. Metabolism, Metabolomics, and Inflammation in Posttraumatic Stress Disorder. Biol Psychiatry 2018; 83:866-875. [PMID: 29628193 DOI: 10.1016/j.biopsych.2018.02.007] [Citation(s) in RCA: 97] [Impact Index Per Article: 16.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/06/2017] [Revised: 02/08/2018] [Accepted: 02/14/2018] [Indexed: 02/06/2023]
Abstract
Posttraumatic stress disorder (PTSD) is defined by classic psychological manifestations, although among the characteristics are significantly increased rates of serious somatic comorbidities, such as cardiovascular disease, immune dysfunction, and metabolic syndrome. In this review, we assess the evidence for disturbances that may contribute to somatic pathology in inflammation, metabolic syndrome, and circulating metabolites (implicating mitochondrial dysfunction) in individuals with PTSD and in animal models simulating features of PTSD. The clinical and preclinical data highlight probable interrelated features of PTSD pathophysiology, including a proinflammatory milieu, metabolomic changes (implicating mitochondrial and other processes), and metabolic dysregulation. These data suggest that PTSD may be a systemic illness, or that it at least has systemic manifestations, and the behavioral manifestations are those most easily discerned. Whether somatic pathology precedes the development of PTSD (and thus may be a risk factor) or follows the development of PTSD (as a result of either shared pathophysiologies or lifestyle adaptations), comorbid PTSD and somatic illness is a potent combination placing affected individuals at increased physical as well as mental health risk. We conclude with directions for future research and novel treatment approaches based on these abnormalities.
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Affiliation(s)
- Synthia H Mellon
- Department of Obstetrics, Gynecology and Reproductive Sciences, University of California-San Francisco, San Francisco, California
| | - Aarti Gautam
- Integrative Systems Biology, United States Army Medical Research and Material Command, United States Army Center for Environmental Health Research, Fort Detrick, Frederick, Maryland
| | - Rasha Hammamieh
- Integrative Systems Biology, United States Army Medical Research and Material Command, United States Army Center for Environmental Health Research, Fort Detrick, Frederick, Maryland
| | - Marti Jett
- Integrative Systems Biology, United States Army Medical Research and Material Command, United States Army Center for Environmental Health Research, Fort Detrick, Frederick, Maryland.
| | - Owen M Wolkowitz
- Department of Psychiatry, University of California-San Francisco, San Francisco, California
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18
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Abstract
BACKGROUND No study has previously analyzed aggressiveness, homicide, and Lyme disease (LD). MATERIALS AND METHODS Retrospective LD chart reviews analyzed aggressiveness, compared 50 homicidal with 50 non-homicidal patients, and analyzed homicides. RESULTS Most aggression with LD was impulsive, sometimes provoked by intrusive symptoms, sensory stimulation or frustration and was invariably bizarre and senseless. About 9.6% of LD patients were homicidal with the average diagnosis delay of 9 years. Postinfection findings associated with homicidality that separated from the non-homicidal group within the 95% confidence interval included suicidality, sudden abrupt mood swings, explosive anger, paranoia, anhedonia, hypervigilance, exaggerated startle, disinhibition, nightmares, depersonalization, intrusive aggressive images, dissociative episodes, derealization, intrusive sexual images, marital/family problems, legal problems, substance abuse, depression, panic disorder, memory impairments, neuropathy, cranial nerve symptoms, and decreased libido. Seven LD homicides included predatory aggression, poor impulse control, and psychosis. Some patients have selective hyperacusis to mouth sounds, which I propose may be the result of brain dysfunction causing a disinhibition of a primitive fear of oral predation. CONCLUSION LD and the immune, biochemical, neurotransmitter, and the neural circuit reactions to it can cause impairments associated with violence. Many LD patients have no aggressiveness tendencies or only mild degrees of low frustration tolerance and irritability and pose no danger; however, a lesser number experience explosive anger, a lesser number experience homicidal thoughts and impulses, and much lesser number commit homicides. Since such large numbers are affected by LD, this small percent can be highly significant. Much of the violence associated with LD can be avoided with better prevention, diagnosis, and treatment of LD.
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Affiliation(s)
- Robert C Bransfield
- Department of Psychiatry, Rutgers-Robert Wood Johnson Medical School, Piscataway, NJ, USA
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19
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Baek H, Shin HJ, Kim JJ, Shin N, Kim S, Yi MH, Zhang E, Hong J, Kang JW, Kim Y, Kim CS, Kim DW. Primary cilia modulate TLR4-mediated inflammatory responses in hippocampal neurons. J Neuroinflammation 2017; 14:189. [PMID: 28927423 PMCID: PMC5606072 DOI: 10.1186/s12974-017-0958-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2016] [Accepted: 09/03/2017] [Indexed: 12/15/2022] Open
Abstract
Background The primary cilium is an organelle that can act as a master regulator of cellular signaling. Despite the presence of primary cilia in hippocampal neurons, their function is not fully understood. Recent studies have demonstrated that the primary cilium influences interleukin (IL)-1β-induced NF-κB signaling, ultimately mediating the inflammatory response. We, therefore, investigated ciliary function and NF-κB signaling in lipopolysaccharide (LPS)-induced neuroinflammation in conjunction with ciliary length analysis. Methods Since TLR4/NF-κB signaling is a well-known inflammatory pathway, we measured ciliary length and inflammatory mediators in wild type (WT) and TLR4−/− mice injected with LPS. Next, to exclude the effects of microglial TLR4, we examined the ciliary length, ciliary components, inflammatory cytokine, and mediators in HT22 hippocampal neuronal cells. Results Primary ciliary length decreased in hippocampal pyramidal neurons after intracerebroventricular injection of LPS in WT mice, whereas it increased in TLR4−/− mice. LPS treatment decreased primary ciliary length, activated NF-κB signaling, and increased Cox2 and iNOS levels in HT22 hippocampal neurons. In contrast, silencing Kif3a, a key protein component of cilia, increased ARL13B ciliary protein levels and suppressed NF-κB signaling and expression of inflammatory mediators. Conclusions These data suggest that LPS-induced NF-κB signaling and inflammatory mediator expression are modulated by cilia and that the blockade of primary cilium formation by Kif3a siRNA regulates TLR4-induced NF-κB signaling. We propose that primary cilia are critical for regulating NF-κB signaling events in neuroinflammation and in the innate immune response. Electronic supplementary material The online version of this article (10.1186/s12974-017-0958-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Hyunjung Baek
- Department of Anatomy, Department of Medical Science, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.,Department of Pediatrics, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Hyo Jung Shin
- Department of Anatomy, Department of Medical Science, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Jwa-Jin Kim
- Department of Anatomy, Department of Medical Science, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.,LES Corporation Inc., Gung-Dong 465-16, Yuseong-Gu, Daejeon, 305-335, Republic of Korea
| | - Nara Shin
- Department of Anatomy, Department of Medical Science, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.,Department of Anesthesia and Pain Medicine, Chungnam National University Hospital, Daejeon, 35015, Republic of Korea
| | - Sena Kim
- Department of Anatomy, Department of Medical Science, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.,Department of Plastic Surgery, Chungnam National University Hospital, Daejeon, 35015, Republic of Korea
| | - Min-Hee Yi
- Department of Anatomy, Department of Medical Science, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.,Department of Neuroscience and Cell Biology, The University of Texas Medical Branch School of Medicine, 301 University Boulevard, Galveston, TX, 77555, USA
| | - Enji Zhang
- Department of Anatomy, Department of Medical Science, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.,Department of Anesthesia Medicine, Yanbian University Hospital, Yanbian, 133000, China
| | - Jinpyo Hong
- Department of Anatomy, Department of Medical Science, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Joon Won Kang
- Department of Pediatrics, Chungnam National University Hospital, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea
| | - Yonghyun Kim
- Department of Chemical and Biological Engineering, The University of Alabama, Tuscaloosa, AL, 35487, USA
| | - Cuk-Seong Kim
- Department of Physiology, Department of Medical Science, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.
| | - Dong Woon Kim
- Department of Anatomy, Department of Medical Science, Brain Research Institute, Chungnam National University School of Medicine, Daejeon, 35015, Republic of Korea.
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20
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Kwon W, Kim HS, Jeong J, Sung Y, Choi M, Park S, Lee J, Jang S, Kim SH, Lee S, Kim MO, Ryoo ZY. Tet1 overexpression leads to anxiety-like behavior and enhanced fear memories via the activation of calcium-dependent cascade through Egr1 expression in mice. FASEB J 2017; 32:390-403. [PMID: 28899881 DOI: 10.1096/fj.201601340rr] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2016] [Accepted: 09/05/2017] [Indexed: 11/11/2022]
Abstract
Ten-eleven translocation methylcytosine dioxygenase 1 (Tet1) initiates DNA demethylation by converting 5-methylcytosine (5-mC) to 5-hydroxymethylcytosine (5-hmC) at CpG-rich regions of genes, which have key roles in adult neurogenesis and memory. In addition, the overexpression of Tet1 with 5-hmC alteration in patients with psychosis has also been reported, for instance in schizophrenia and bipolar disorders. The mechanism underlying Tet1 overexpression in the brain; however, is still elusive. In the present study, we found that Tet1-transgenic (Tet1-TG) mice displayed abnormal behaviors involving elevated anxiety and enhanced fear memories. We confirmed that Tet1 overexpression affected adult neurogenesis with oligodendrocyte differentiation in the hippocampal dentate gyrus of Tet1-TG mice. In addition, Tet1 overexpression induced the elevated expression of immediate early genes, such as Egr1, c-fos, Arc, and Bdnf, followed by the activation of intracellular calcium signals (i.e., CamKII, ERK, and CREB) in prefrontal and hippocampal neurons. The expression of GABA receptor subunits (Gabra2 and Gabra4) fluctuated in the prefrontal cortex and hippocampus. We evaluated the effects of Tet1 overexpression on intracellular calcium-dependent cascades by activating the Egr1 promoter in vitro Tet1 enhanced Egr1 expression, which may have led to alterations in Gabra2 and Gabra4 expression in neurons. Taken together, we suggest that the Tet1 overexpression in our Tet1-TG mice can be applied as an effective model for studying various stress-related diseases that show hyperactivation of intracellular calcium-dependent cascades in the brain.-Kwon, W., Kim, H.-S., Jeong, J., Sung, Y., Choi, M., Park, S., Lee, J., Jang, S., Kim, S. H., Lee, S., Kim, M. O., Ryoo, Z. Y. Tet1 overexpression leads to anxiety-like behavior and enhanced fear memories via the activation of calcium-dependent cascade through Egr1 expression in mice.
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Affiliation(s)
- Wookbong Kwon
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Hyeng-Soo Kim
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea.,Institute of Life Science and Biotechnology, Kyungpook National University, Daegu, South Korea; and
| | - Jain Jeong
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Yonghun Sung
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Minjee Choi
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Song Park
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Jinhee Lee
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Soyoung Jang
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Sung Hyun Kim
- Institute of Life Science and Biotechnology, Kyungpook National University, Daegu, South Korea; and
| | - Sanggyu Lee
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea
| | - Myoung Ok Kim
- The School of Animal Biotechnology (BT) Science, Kyungpook National University, Sangju, South Korea
| | - Zae Young Ryoo
- School of Life Science, BK21 Plus KNU Creative BioResearch Group, Kyungpook National University, Daegu, South Korea;
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21
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Bhakta A, Gavini K, Yang E, Lyman-Henley L, Parameshwaran K. Chronic traumatic stress impairs memory in mice: Potential roles of acetylcholine, neuroinflammation and corticotropin releasing factor expression in the hippocampus. Behav Brain Res 2017; 335:32-40. [DOI: 10.1016/j.bbr.2017.08.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Revised: 07/24/2017] [Accepted: 08/05/2017] [Indexed: 12/15/2022]
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22
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Haviv R, Oz E, Soreq H. The Stress-Responding miR-132-3p Shows Evolutionarily Conserved Pathway Interactions. Cell Mol Neurobiol 2017; 38:141-153. [PMID: 28667373 PMCID: PMC5775983 DOI: 10.1007/s10571-017-0515-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 06/22/2017] [Indexed: 02/06/2023]
Abstract
MicroRNAs (miRNAs) are small non-coding RNA chains that can each interact with the 3′-untranslated region of multiple target transcripts in various organisms, humans included. MiRNAs tune entire biological pathways, spanning stress reactions, by regulating the stability and/or translation of their targets. MiRNA genes are often subject to co-evolutionary changes together with their target transcripts, which may be reflected by differences between paralog mouse and primate miRNA/mRNA pairs. However, whether such evolution occurred in stress-related miRNAs remained largely unknown. Here, we report that the stress-induced evolutionarily conserved miR-132-3p, its target transcripts and its regulated pathways provide an intriguing example to exceptionally robust conservation. Mice and human miR-132-3p share six experimentally validated targets and 18 predicted targets with a common miRNA response element. Enrichment analysis and mining in-house and web-available experimental data identified co-regulation by miR-132 in mice and humans of stress-related, inflammatory, metabolic, and neuronal growth pathways. Our findings demonstrate pan-mammalian preservation of miR-132′s neuronal roles, and call for further exploring the corresponding stress-related implications.
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Affiliation(s)
- Rotem Haviv
- Department of Biological Chemistry, The Silberman Institute of Life Sciences and the Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401, Jerusalem, Israel
| | - Eden Oz
- Department of Biological Chemistry, The Silberman Institute of Life Sciences and the Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401, Jerusalem, Israel
| | - Hermona Soreq
- Department of Biological Chemistry, The Silberman Institute of Life Sciences and the Edmond and Lily Safra Center for Brain Sciences, The Hebrew University of Jerusalem, The Edmond J. Safra Campus, 9190401, Jerusalem, Israel.
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Simchovitz A, Heneka MT, Soreq H. Personalized genetics of the cholinergic blockade of neuroinflammation. J Neurochem 2017; 142 Suppl 2:178-187. [PMID: 28326544 PMCID: PMC5600134 DOI: 10.1111/jnc.13928] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2016] [Revised: 11/27/2016] [Accepted: 12/05/2016] [Indexed: 01/09/2023]
Abstract
Acetylcholine signaling is essential for cognitive functioning and blocks inflammation. To maintain homeostasis, cholinergic signaling is subjected to multi‐leveled and bidirectional regulation by both proteins and non‐coding microRNAs (‘CholinomiRs’). CholinomiRs coordinate the cognitive and inflammatory aspects of cholinergic signaling by targeting major cholinergic transcripts including the acetylcholine hydrolyzing enzyme acetylcholinesterase (AChE). Notably, AChE inhibitors are the only currently approved line of treatment for Alzheimer's disease patients. Since cholinergic signaling blocks neuroinflammation which is inherent to Alzheimer's disease, genomic changes modifying AChE's properties and its susceptibility to inhibitors and/or to CholinomiRs regulation may affect the levels and properties of inflammasome components such as NLRP3. This calls for genomic‐based medicine approaches based on genotyping of both coding and non‐coding single nucleotide polymorphisms (SNPs) in the genes involved in cholinergic signaling. An example is a SNP in a recognition element for the primate‐specific microRNA‐608 within the 3′ untranslated region of the AChE transcript. Carriers of the minor allele of that SNP present massively elevated brain AChE levels, increased trait anxiety and inflammation, accompanied by perturbed CholinomiR‐608 regulatory networks and elevated prefrontal activity under exposure to stressful insults. Several additional SNPs in the AChE and other cholinergic genes await further studies, and might likewise involve different CholinomiRs and pathways including those modulating the initiation and progression of neurodegenerative diseases. CholinomiRs regulation of the cholinergic system thus merits in‐depth interrogation and is likely to lead to personalized medicine approaches for achieving better homeostasis in health and disease. This is an article for the special issue XVth International Symposium on Cholinergic Mechanisms. ![]()
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Affiliation(s)
- Alon Simchovitz
- Department of Biological Chemistry, The Hebrew University of Jerusalem, Givat Ram, Jerusalem, Israel
| | | | - Hermona Soreq
- Department of Biological Chemistry, The Hebrew University of Jerusalem, Givat Ram, Jerusalem, Israel
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Ameliorating Active Ulcerative Colitis via an Orally Available Toll-Like Receptor-9 Modifier: A Prospective Open-Label, Multicenter Phase II Trial. Dig Dis Sci 2016; 61:3246-3254. [PMID: 27572942 DOI: 10.1007/s10620-016-4276-1] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2016] [Accepted: 08/10/2016] [Indexed: 12/27/2022]
Abstract
BACKGROUND Treatment of active ulcerative colitis is associated with incomplete efficacy, adverse events, and loss of response. Toll-like receptor-9 mediates innate and adaptive immune response toward intestinal microorganisms. The oral synthetic oligonucleotide toll-like receptor-9 modulator has demonstrated anti-inflammatory properties in colitis murine models and a satisfactory safety profile in humans. AIM To evaluate the efficacy and safety of BL-7040 (a Toll-like receptor-9 modulator) in patients with moderately active ulcerative colitis. METHODS Moderately active ulcerative colitis patients were included in this multicenter, open-label phase IIa trial. Concomitant mesalamine and steroids at a stable dose were allowed. Clinical outcome was evaluated using the Mayo score, histology, and mucosal cytokine levels. Side effects were registered. RESULTS Sixteen out of 22 patients completed a 5-week treatment course and 2-week follow-up. Six patients discontinued the study, three of them due to adverse events. Clinical remission was observed in two patients (12.5 %), and clinical response as well as mucosal healing were achieved in half (50 %) of the patients, while all others remained stable. Furthermore, mucosal neutrophil (p = 0.002) and mucosal interleukin-6 levels (p = 0.046) were significantly reduced in responders compared to non-responders. Toll-like receptor-9 was well tolerated with only one unrelated to study drug serious adverse event (hemoglobin decrease) and 29 mild-to-moderate adverse events. CONCLUSIONS Oral administration of the Toll-like receptor-9 agonist BL-7040 appeared efficacious, safe and well tolerated in patients with moderately active ulcerative colitis.
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Wang Z, Young MRI. PTSD, a Disorder with an Immunological Component. Front Immunol 2016; 7:219. [PMID: 27375619 PMCID: PMC4893499 DOI: 10.3389/fimmu.2016.00219] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Accepted: 05/23/2016] [Indexed: 12/27/2022] Open
Abstract
Post-traumatic stress disorder (PTSD) has been associated with an inflammatory state. However, few studies have addressed the mechanisms underlying this immune imbalance that favors inflammation or how this imbalance contributes to PTSD. Whether the immune imbalance influences responsiveness or unresponsiveness of patients to PTSD treatments is currently not known. This review brings forward an immune emphasis to a mental health disorder that is unprecedented in its prevalence among combat Veterans of the ongoing conflicts in Iraq and Afghanistan and which also afflicts civilians who have undergone extreme traumatic experiences, such as following natural disasters, serious accidents, or assaults. Included is an overview of the correlative associations in human subjects between PTSD and inflammation and studies in animal models of PTSD, demonstrating causal contributions of inflammation and immune dysregulation to PTSD-like behavior following stress exposure.
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Affiliation(s)
- Zhewu Wang
- Mental Health Service, Ralph H. Johnson VA Medical Center, Charleston, SC, USA; Department of Psychiatry, Medical University of South Carolina, Charleston, SC, USA
| | - M Rita I Young
- Research Service, Ralph H. Johnson VA Medical Center, Charleston, SC, USA; Department of Otolaryngology - Head and Neck Surgery, Medical University of South Carolina, Charleston, SC, USA
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Intensified vmPFC surveillance over PTSS under perturbed microRNA-608/AChE interaction. Transl Psychiatry 2016; 6:e801. [PMID: 27138800 PMCID: PMC5070052 DOI: 10.1038/tp.2016.70] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/09/2015] [Revised: 03/14/2016] [Accepted: 03/20/2016] [Indexed: 12/12/2022] Open
Abstract
Trauma causes variable risk of posttraumatic stress symptoms (PTSS) owing to yet-unknown genome-neuronal interactions. Here, we report co-intensified amygdala and ventromedial prefrontal cortex (vmPFC) emotional responses that may overcome PTSS in individuals with the single-nucleotide polymorphism (SNP) rs17228616 in the acetylcholinesterase (AChE) gene. We have recently shown that in individuals with the minor rs17228616 allele, this SNP interrupts AChE suppression by microRNA (miRNA)-608, leading to cortical elevation of brain AChE and reduced cortisol and the miRNA-608 target GABAergic modulator CDC42, all stress-associated. To examine whether this SNP has effects on PTSS and threat-related brain circuits, we exposed 76 healthy Israel Defense Forces soldiers who experienced chronic military stress to a functional magnetic resonance imaging task of emotional and neutral visual stimuli. Minor allele individuals predictably reacted to emotional stimuli by hyperactivated amygdala, a hallmark of PTSS and a predisposing factor of posttraumatic stress disorder (PTSD). Despite this, minor allele individuals showed no difference in PTSS levels. Mediation analyses indicated that the potentiated amygdala reactivity in minor allele soldiers promoted enhanced vmPFC recruitment that was associated with their limited PTSS. Furthermore, we found interrelated expression levels of several miRNA-608 targets including CD44, CDC42 and interleukin 6 in human amygdala samples (N=7). Our findings suggest that miRNA-608/AChE interaction is involved in the threat circuitry and PTSS and support a model where greater vmPFC regulatory activity compensates for amygdala hyperactivation in minor allele individuals to neutralize their PTSS susceptibility.
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Shenhar-Tsarfaty S, Toker S, Shapira I, Rogowski O, Berliner S, Ritov Y, Soreq H. Weakened Cholinergic Blockade of Inflammation Associates with Diabetes-Related Depression. Mol Med 2016; 22:156-161. [PMID: 27257683 DOI: 10.2119/molmed.2016.00067] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2016] [Accepted: 03/28/2016] [Indexed: 12/25/2022] Open
Abstract
Emerging evidence demonstrates association of depression with both immune malfunctioning and worsened course of diverse aging-related diseases, but there is no explanation for the pathway(s) controlling this dual association. Here, we report that in post-reproductive and evolutionarily -blind" years, depression may weaken pathogen-host defense, compatible with the antagonistic pleiotropy hypothesis. In 15,532 healthy volunteers, depression scores associated with both inflammatory parameters and with increased circulation cholinesterase activities, implicating debilitated cholinergic blockade of inflammation as an underlying mechanism; furthermore, depression, inflammation and cholinesterase activities all increased with aging. In the entire cohort, combined increases in inflammation and the diabetic biomarker hemoglobin A1c associated with elevated depression. Moreover, metabolic syndrome patients with higher risk of diabetes showed increased cholinesterase levels and pulse values, and diabetic patients presented simultaneous increases in depression, inflammation and circulation cholinesterase activities, suggesting that cholinergic impairment precedes depression. Our findings indicate that dysfunctioning cholinergic regulation weakens the otherwise protective link between depression and pathogen-host defense, with global implications for aging-related diseases.
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Affiliation(s)
- Shani Shenhar-Tsarfaty
- The Edmond and Lily Safra Center for Brain Sciences and The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Israel
| | - Sharon Toker
- Faculty of Management, Tel Aviv University, Israel
| | - Itzhak Shapira
- Department of Internal Medicine, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel
| | - Ori Rogowski
- Faculty of Management, Tel Aviv University, Israel
| | | | - Yaacov Ritov
- Department of Statistics and the Center for Rationality, The Hebrew University of Jerusalem
| | - Hermona Soreq
- The Edmond and Lily Safra Center for Brain Sciences and The Alexander Silberman Institute of Life Sciences, The Hebrew University of Jerusalem, Israel
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Natural Nuclear Factor Kappa Beta Inhibitors: Safe Therapeutic Options for Inflammatory Bowel Disease. Inflamm Bowel Dis 2016; 22:719-23. [PMID: 26717321 DOI: 10.1097/mib.0000000000000655] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Inflammatory bowel disease (IBD) is a chronic and debilitating condition classified as ulcerative colitis and Crohn's disease. IBD usually happens as result of immune dysfunction in the intestinal mucosa resulting in epithelial barrier dysfunction, which leads to exposure of the mucosal immune system to luminal antigenic material. This results in activation of inflammation, which is our bodies natural defense system; however, chronic inflammation leads to barrier dysfunction, which triggers a cycle of inflammation and further barrier dysfunction. This barrier breakdown results in the uncontrolled progression of IBD throughout the intestine. Despite the therapeutic advances made over the last decade, the current first line of treatment of IBD is limited to immunosuppressive and anti-inflammatory drugs, which need to be taken regularly and have significant side effects to the patients. Prolonged inflammation may increase the risk of intestinal malignancy. The role of nuclear factor kappa beta (NF-κβ) has been established in the regulation of innate immunity and inflammation. NF-κβ has also shown to be involved in critical events linking inflammation and cancer development. Recent investigations suggest that the NF-κβ signaling cascade may be the central mediator of gastrointestinal inflammation in IBD and malignancies including esophageal, gastric, and colorectal cancers. In this review, the therapeutic potential of natural NF-κβ inhibitors as safe therapeutic options for the treatment of IBD will be discussed.
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Guardado P, Olivera A, Rusch HL, Roy M, Martin C, Lejbman N, Lee H, Gill JM. Altered gene expression of the innate immune, neuroendocrine, and nuclear factor-kappa B (NF-κB) systems is associated with posttraumatic stress disorder in military personnel. J Anxiety Disord 2016; 38:9-20. [PMID: 26751122 DOI: 10.1016/j.janxdis.2015.12.004] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/12/2015] [Revised: 10/08/2015] [Accepted: 12/08/2015] [Indexed: 12/21/2022]
Abstract
Whole transcriptome analysis provides an unbiased examination of biological activity, and likely, unique insight into the mechanisms underlying posttraumatic stress disorder (PTSD) and comorbid depression and traumatic brain injury. This study compared gene-expression profiles in military personnel with PTSD (n=28) and matched controls without PTSD (n=27) using HG-U133 Plus 2.0 microarrays (Affymetrix), which contain 54,675 probe sets representing more than 38,500 genes. Analysis of expression profiles revealed 203 differentially expressed genes in PTSD, of which 72% were upregulated. Using Partek Genomics Suite 6.6, differentially expressed transcription clusters were filtered based on a selection criterion of ≥1.5 relative fold change at a false discovery rate of ≤5%. Ingenuity Pathway Analysis (Qiagen) of the differentially expressed genes indicated a dysregulation of genes associated with the innate immune, neuroendocrine, and NF-κB systems. These findings provide novel insights that may lead to new pharmaceutical agents for PTSD treatments and help mitigate mental and physical comorbidity risk.
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Affiliation(s)
- Pedro Guardado
- National Institute of Nursing Research, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Anlys Olivera
- National Institute of Nursing Research, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Heather L Rusch
- National Institute of Nursing Research, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA; Henry M Jackson Foundation for The Advancement of Military Medicine, 6720A Rockledge Drive #100, Bethesda, MD 20817, USA
| | - Michael Roy
- Uniformed Service University of the Health Science, 4301 Jones Bridge Road, Bethesda, MD 20814, USA
| | - Christiana Martin
- National Institute of Nursing Research, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Natasha Lejbman
- National Institute of Nursing Research, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA
| | - Hwyunhwa Lee
- University of Nevada, Las Vegas, School of Nursing, 4505 South Maryland Parkway, Las Vegas, NV 89154, USA
| | - Jessica M Gill
- National Institute of Nursing Research, National Institutes of Health, 9000 Rockville Pike, Bethesda, MD 20892, USA.
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Sergeeva M, Rech J, Schett G, Hess A. Response to peripheral immune stimulation within the brain: magnetic resonance imaging perspective of treatment success. Arthritis Res Ther 2015; 17:268. [PMID: 26477946 PMCID: PMC4610054 DOI: 10.1186/s13075-015-0783-2] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Chronic peripheral inflammation in diseases such as rheumatoid arthritis leads to alterations in central pain processing and consequently to mood disorders resulting from sensitization within the central nervous system and enhanced vulnerability of the medial pain pathway. Proinflammatory cytokines such as tumor necrosis factor (TNF) alpha play an important role herein, and therapies targeting their signaling (i.e., anti-TNF therapies) have been proven to achieve good results. However, the phenomenon of rapid improvement in the patients’ subjective feeling after the start of TNFα neutralization remained confusing, because it was observed long before any detectable signs of inflammation decline. Functional magnetic resonance imaging (fMRI), enabling visualization of brain activity upon peripheral immune stimulation with anti-TNF, has helped to clarify this discrepancy. Moreover, fMRI appeared to work as a reliable tool for predicting prospective success of anti-TNF therapy, which is valuable considering the side effects of the drugs and the high therapy costs. This review, which is mainly guided by neuroimaging studies of the brain, summarizes the state-of-the-art knowledge about communication between the immune system and the brain and its impact on subjective well-being, addresses in more detail the outcome of the abovementioned anti-TNF fMRI studies (rapid response to TNFα blockade within the brain pain matrix and differences in brain activation patterns between prospective therapy responders and nonresponders), and discusses possible mechanisms for the latter phenomena and the predictive power of fMRI.
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Affiliation(s)
- Marina Sergeeva
- Institut for Experimental Pharmacology, Friedrich Alexander University Erlangen-Nürnberg, Fahrstrasse 17, 91054, Erlangen, Germany.
| | - Jürgen Rech
- Department of Internal Medicine III, Friedrich Alexander University Erlangen-Nürnberg, Ulmenweg 18, 91054, Erlangen, Germany.
| | - Georg Schett
- Department of Internal Medicine III, Friedrich Alexander University Erlangen-Nürnberg, Ulmenweg 18, 91054, Erlangen, Germany.
| | - Andreas Hess
- Institut for Experimental Pharmacology, Friedrich Alexander University Erlangen-Nürnberg, Fahrstrasse 17, 91054, Erlangen, Germany.
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Checks and balances on cholinergic signaling in brain and body function. Trends Neurosci 2015; 38:448-58. [DOI: 10.1016/j.tins.2015.05.007] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2014] [Revised: 05/19/2015] [Accepted: 05/25/2015] [Indexed: 02/07/2023]
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Lohr JB, Palmer BW, Eidt CA, Aailaboyina S, Mausbach BT, Wolkowitz OM, Thorp SR, Jeste DV. Is Post-Traumatic Stress Disorder Associated with Premature Senescence? A Review of the Literature. Am J Geriatr Psychiatry 2015; 23:709-25. [PMID: 25959921 PMCID: PMC4568841 DOI: 10.1016/j.jagp.2015.04.001] [Citation(s) in RCA: 151] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/12/2015] [Revised: 03/23/2015] [Accepted: 04/01/2015] [Indexed: 01/27/2023]
Abstract
OBJECTIVE Post-traumatic stress disorder (PTSD) has major public health significance. Evidence that PTSD may be associated with premature senescence (early or accelerated aging) would have major implications for quality of life and healthcare policy. We conducted a comprehensive review of published empirical studies relevant to early aging in PTSD. METHOD Our search included the PubMed, PsycINFO, and PILOTS databases for empirical reports published since the year 2000 relevant to early senescence and PTSD, including: 1) biomarkers of senescence (leukocyte telomere length [LTL] and pro-inflammatory markers), 2) prevalence of senescence-associated medical conditions, and 3) mortality rates. RESULTS All six studies examining LTL indicated reduced LTL in PTSD (pooled Cohen's d = 0.76). We also found consistent evidence of increased pro-inflammatory markers in PTSD (mean Cohen's ds), including C-reactive protein = 0.18, Interleukin-1 beta = 0.44, Interleukin-6 = 0.78, and tumor necrosis factor alpha = 0.81. The majority of reviewed studies also indicated increased medical comorbidity among several targeted conditions known to be associated with normal aging, including cardiovascular disease, type 2 diabetes mellitus, gastrointestinal ulcer disease, and dementia. We also found seven of 10 studies indicated PTSD to be associated with earlier mortality (average hazard ratio: 1.29). CONCLUSION In short, evidence from multiple lines of investigation suggests that PTSD may be associated with a phenotype of accelerated senescence. Further research is critical to understand the nature of this association. There may be a need to re-conceptualize PTSD beyond the boundaries of mental illness, and instead as a full systemic disorder.
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Affiliation(s)
- James B. Lohr
- VA Center of Excellence for Stress and Mental Health,University of California, San Diego – Department of Psychiatry and the Sam and Rose Stein Institute for Research on Aging
| | - Barton W. Palmer
- VA Center of Excellence for Stress and Mental Health,University of California, San Diego – Department of Psychiatry and the Sam and Rose Stein Institute for Research on Aging
| | - Carolyn A. Eidt
- VA Center of Excellence for Stress and Mental Health,University of California, San Diego – Department of Psychiatry and the Sam and Rose Stein Institute for Research on Aging
| | - Smitha Aailaboyina
- VA Center of Excellence for Stress and Mental Health,University of California, San Diego – Department of Psychiatry and the Sam and Rose Stein Institute for Research on Aging
| | - Brent T. Mausbach
- University of California, San Diego – Department of Psychiatry and the Sam and Rose Stein Institute for Research on Aging
| | | | - Steven R. Thorp
- VA Center of Excellence for Stress and Mental Health,University of California, San Diego – Department of Psychiatry and the Sam and Rose Stein Institute for Research on Aging
| | - Dilip V. Jeste
- University of California, San Diego – Department of Psychiatry and the Sam and Rose Stein Institute for Research on Aging
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Nadorp B, Soreq H. Gut feeling: MicroRNA discriminators of the intestinal TLR9-cholinergic links. Int Immunopharmacol 2015; 29:8-14. [PMID: 26003847 PMCID: PMC4646847 DOI: 10.1016/j.intimp.2015.04.058] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2015] [Revised: 04/14/2015] [Accepted: 04/15/2015] [Indexed: 12/25/2022]
Abstract
The intestinal tissue notably responds to stressful, cholinergic and innate immune signals by microRNA (miRNA) changes, but whether and how those miRNA regulators modify the intestinal cholinergic and innate immune pathways remained unexplored. Here, we report changes in several miRNA regulators of cholinesterases (ChEs) and correspondingly modified ChE activities in intestine, splenocytes and the circulation of mice exposed to both stress and canonical or alternative Toll-Like Receptor 9 (TLR9) oligonucleotide (ODN) aptamer activators or blockers. Stressful intraperitoneal injection of saline, the anti-inflammatory TLR9 agonist mEN101 aptamer or the inflammation-activating TLR9 aptamer ODN 1826 all increased the expression of the acetylcholinesterase (AChE)-targeting miR-132. In comparison, mEN101 but neither ODN 1826 nor saline injections elevated intestinal miR-129-5p, miR-186 and miR-200c, all predicted to target both AChE and the homologous enzyme butyrylcholinesterase (BChE). In cultured immune cells, BL-7040, the human counterpart of mEN101, reduced AChE activity reflecting inflammatory reactions in a manner preventable by the TLR9 blocking ODN 2088. Furthermore, the anti-inflammatory BL-7040 TLR9 aptamer caused reduction in nitric oxide and AChE activity in both murine splenocytes and human mononuclear cells at molar concentrations four orders of magnitude lower than ODN 1826. Our findings demonstrate differential reaction of cholinesterase-targeting miRNAs to distinct TLR9 challenges, indicating upstream miRNA co-regulation of the intestinal alternative NFκB pathway and cholinergic signaling. TLR9 aptamers may hence potentiate miRNA regulation that enhances cholinergic signaling and the resolution of inflammation, which opens new venues for manipulating bowel diseases.
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Affiliation(s)
- Bettina Nadorp
- Department of Biological Chemistry, The Hebrew University of Jerusalem, Israel; Institute of Life Sciences, The Hebrew University of Jerusalem, Israel; Edmond and Lily Safra Center of Brain Science, The Hebrew University of Jerusalem, Israel; Grass Center for Bioengineering, The Hebrew University of Jerusalem, Israel
| | - Hermona Soreq
- Department of Biological Chemistry, The Hebrew University of Jerusalem, Israel; Institute of Life Sciences, The Hebrew University of Jerusalem, Israel; Edmond and Lily Safra Center of Brain Science, The Hebrew University of Jerusalem, Israel.
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Minter MR, Main BS, Brody KM, Zhang M, Taylor JM, Crack PJ. Soluble amyloid triggers a myeloid differentiation factor 88 and interferon regulatory factor 7 dependent neuronal type-1 interferon response in vitro. J Neuroinflammation 2015; 12:71. [PMID: 25879763 PMCID: PMC4407532 DOI: 10.1186/s12974-015-0263-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2014] [Accepted: 02/09/2015] [Indexed: 01/10/2023] Open
Abstract
BACKGROUND Neuro-inflammation has long been implicated as a contributor to the progression of Alzheimer's disease in both humans and animal models. Type-1 interferons (IFNs) are pleiotropic cytokines critical in mediating the innate immune pro-inflammatory response. The production of type-1 IFNs following pathogen detection is, in part, through the activation of the toll-like receptors (TLRs) and subsequent signalling through myeloid differentiation factor-88 (Myd88) and interferon regulatory factors (IRFs). We have previously identified that neuronal type-1 IFN signalling, through the type-1 interferon alpha receptor-1 (IFNAR1), is detrimental in models of AD. Using an in vitro approach, this study investigated the TLR network as a potential production pathway for neuronal type-1 IFNs in response to Aβ. METHODS Wildtype and Myd88(-/-) primary cultured cortical and hippocampal neurons were treated with 2.5 μM Aβ1-42 for 24 to 72 h or 1 to 10 μM Aβ1-42 for 72 h. Human BE(2)M17 neuroblastoma cells stably expressing an IRF7 small hairpin RNA (shRNA) or negative control shRNA construct were subjected to 7.5 μM Aβ1-42/Aβ42-1 for 24 to 96 h, 2.5 to 15 μM Aβ1-42 for 96 h or 100 ng/ml LPS for 0.5 to 24 h. Q-PCR was used to analyse IFNα, IFNβ, IL-1β, IL-6 and TNFα mRNA transcript levels. Phosphorylation of STAT-3 was detected by Western blot analysis, and cell viability was assessed by MTS assay. RESULTS Reduced IFNα, IFNβ, IL-1β, IL-6 and TNFα expression was detected in Aβ1-42-treated Myd88(-/-) neurons compared to wildtype cells. This correlated with reduced phosphorylation of STAT-3, a downstream type-1 IFN signalling mediator. Significantly, Myd88(-/-) neuronal cultures were protected against Aβ1-42-induced neurotoxicity compared to wildtype as determined by MTS assay. Knockdown of IRF7 in M17 cells was sufficient in blocking IFNα, IFNβ and p-STAT-3 induction to both Aβ1-42 and the TLR4 agonist LPS. M17 IRF7 KD cells were also protected against Aβ1-42-induced cytotoxicity. CONCLUSIONS This study confirms that the neuronal type-1 IFN response to soluble amyloid is mediated primarily through TLRs. This production is dependent upon Myd88 and IRF7 signalling. This study suggests that targeting this pathway to modulate neuronal type-1 IFN levels may be beneficial in controlling Aβ-induced neurotoxicity.
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Affiliation(s)
- Myles Robert Minter
- Department of Pharmacology and Therapeutics, University of Melbourne, 8th floor, Medical building, Grattan St, Parkville, Melbourne, 3010, VIC, Australia.
| | - Bevan Scott Main
- Department of Pharmacology and Therapeutics, University of Melbourne, 8th floor, Medical building, Grattan St, Parkville, Melbourne, 3010, VIC, Australia.
| | - Kate Maree Brody
- Department of Pharmacology and Therapeutics, University of Melbourne, 8th floor, Medical building, Grattan St, Parkville, Melbourne, 3010, VIC, Australia.
| | - Moses Zhang
- Department of Pharmacology and Therapeutics, University of Melbourne, 8th floor, Medical building, Grattan St, Parkville, Melbourne, 3010, VIC, Australia.
| | - Juliet Marie Taylor
- Department of Pharmacology and Therapeutics, University of Melbourne, 8th floor, Medical building, Grattan St, Parkville, Melbourne, 3010, VIC, Australia.
| | - Peter John Crack
- Department of Pharmacology and Therapeutics, University of Melbourne, 8th floor, Medical building, Grattan St, Parkville, Melbourne, 3010, VIC, Australia.
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Clark SM, Sand J, Francis TC, Nagaraju A, Michael KC, Keegan AD, Kusnecov A, Gould TD, Tonelli LH. Immune status influences fear and anxiety responses in mice after acute stress exposure. Brain Behav Immun 2014; 38:192-201. [PMID: 24524915 PMCID: PMC3989422 DOI: 10.1016/j.bbi.2014.02.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2013] [Revised: 01/27/2014] [Accepted: 02/01/2014] [Indexed: 12/15/2022] Open
Abstract
Significant evidence suggests that exposure to traumatic and/or acute stress in both mice and humans results in compromised immune function that in turn may affect associated brain processes. Additionally, recent studies in mouse models of immune deficiency have suggested that adaptive immunity may play a role during traumatic stress exposure and that impairments in lymphocyte function may contribute to increased susceptibility to various psychogenic stressors. However, rodent studies on the relationship between maladaptive stress responses and lymphocyte deficiency have been complicated by the fact that genetic manipulations in these models may also result in changes in CNS function due to the expression of targeted genes in tissues other than lymphocytes, including the brain. To address these issues we utilized mice with a deletion of recombination-activating gene 2 (Rag2), which has no confirmed expression in the CNS; thus, its loss should result in the absence of mature lymphocytes without altering CNS function directly. Stress responsiveness of immune deficient Rag2(-/-) mice on a BALB/c background was evaluated in three different paradigms: predator odor exposure (POE), fear conditioning (FC) and learned helplessness (LH). These models are often used to study different aspects of stress responsiveness after the exposure to an acute stressor. In addition, immunoblot analysis was used to assess hippocampal BDNF expression under both stressed and non-stressed conditions. Subsequent to POE, Rag2(-/-) mice exhibited a reduced acoustic startle response compared to BALB/c mice; no significant differences in behavior were observed in either FC or LH. Furthermore, analysis of hippocampal BDNF indicated that Rag2(-/-) mice have elevated levels of the mature form of BDNF compared to BALB/c mice. Results from our studies suggest that the absence of mature lymphocytes is associated with increased resilience to stress exposure in the POE and does not affect behavioral responses in the FC and LH paradigms. These findings indicate that lymphocytes play a specific role in stress responsiveness dependent upon the type, nature and intensity of the stressor.
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Affiliation(s)
- Sarah M Clark
- Laboratory of Behavioral Neuroimmunology, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, United States; Research and Development Service, Department of Veterans Affairs, VA Maryland Health Care System, Baltimore, MD, United States
| | - Joseph Sand
- Laboratory of Behavioral Neuroimmunology, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, United States
| | - T Chase Francis
- Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Anitha Nagaraju
- Laboratory of Behavioral Neuroimmunology, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Kerry C Michael
- Laboratory of Behavioral Neuroimmunology, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, United States
| | - Achsah D Keegan
- Center for Vascular and Inflammatory Diseases, Department of Microbiology and Immunology, University of Maryland School of Medicine, Baltimore, MD, United States; Research and Development Service, Department of Veterans Affairs, VA Maryland Health Care System, Baltimore, MD, United States
| | | | - Todd D Gould
- Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, United States; Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, United States; Department of Pharmacology, University of Maryland School of Medicine, Baltimore, MD, United States; Department of Anatomy and Neurobiology, University of Maryland School of Medicine, Baltimore, MD, United States; Research and Development Service, Department of Veterans Affairs, VA Maryland Health Care System, Baltimore, MD, United States
| | - Leonardo H Tonelli
- Laboratory of Behavioral Neuroimmunology, Department of Psychiatry, University of Maryland School of Medicine, Baltimore, MD, United States; Program in Neuroscience, University of Maryland School of Medicine, Baltimore, MD, United States; Research and Development Service, Department of Veterans Affairs, VA Maryland Health Care System, Baltimore, MD, United States.
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Lv Y, Hu S, Lu J, Dong N, Liu Q, Du M, Zhang H. Upregulating nonneuronal cholinergic activity decreases TNF release from lipopolysaccharide-stimulated RAW264.7 cells. Mediators Inflamm 2014; 2014:873728. [PMID: 24733966 PMCID: PMC3964895 DOI: 10.1155/2014/873728] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Revised: 01/03/2014] [Accepted: 01/16/2014] [Indexed: 11/18/2022] Open
Abstract
Nonneuronal cholinergic system plays a primary role in maintaining homeostasis. It has been proved that endogenous neuronal acetylcholine (ACh) could play an anti-inflammatory role, and exogenous cholinergic agonists could weaken macrophages inflammatory response to lipopolysaccharide (LPS) stimulation through activation of α7 subunit-containing nicotinic acetylcholine receptor (α7nAChR). We assumed that nonneuronal cholinergic system existing in macrophages could modulate inflammation through autocrine ACh and expressed α7nAChR on the cells. Therefore, we explored whether LPS continuous stimulation could upregulate the nonneuronal cholinergic activity in macrophages and whether increasing autocrine ACh could decrease TNF release from the macrophages. The results showed that, in RAW264.7 cells incubated with LPS for 20 hours, the secretion of ACh was significantly decreased at 4 h and then gradually increased, accompanied with the enhancement of α7nAChR expression level. The release of TNF was greatly increased from RAW264.7 cells at 4 h and 8 h exposure to LPS; however, it was suppressed at 20 h. Upregulating choline acetyltransferase (ChAT) expression through ChAT gene transfection could enhance ACh secretion and reduce TNF release from the infected RAW264. 7cells. The results indicated that LPS stimulation could modulate the activity of nonneuronal cholinergic system of RAW264.7 cells. Enhancing autocrine ACh production could attenuate TNF release from RAW264.7 cells.
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Affiliation(s)
- Yi Lv
- Laboratory of Shock and Multiple Organ Dysfunction, Burns Institute, First Hospital Affiliated to the People's Liberation Army General Hospital, 51 Fu Cheng Road, Beijing 100048, China
| | - Sen Hu
- Laboratory of Shock and Multiple Organ Dysfunction, Burns Institute, First Hospital Affiliated to the People's Liberation Army General Hospital, 51 Fu Cheng Road, Beijing 100048, China
| | - Jiangyang Lu
- Department of Pathology, First Hospital Affiliated to the People's Liberation Army General Hospital, 51 Fu Cheng Road, Beijing 100048, China
| | - Ning Dong
- Laboratory of Shock and Multiple Organ Dysfunction, Burns Institute, First Hospital Affiliated to the People's Liberation Army General Hospital, 51 Fu Cheng Road, Beijing 100048, China
| | - Qian Liu
- Department of Pathology, First Hospital Affiliated to the People's Liberation Army General Hospital, 51 Fu Cheng Road, Beijing 100048, China
| | - Minghua Du
- Laboratory of Shock and Multiple Organ Dysfunction, Burns Institute, First Hospital Affiliated to the People's Liberation Army General Hospital, 51 Fu Cheng Road, Beijing 100048, China
| | - Huiping Zhang
- Laboratory of Shock and Multiple Organ Dysfunction, Burns Institute, First Hospital Affiliated to the People's Liberation Army General Hospital, 51 Fu Cheng Road, Beijing 100048, China
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Nadorp B, Soreq H. Predicted overlapping microRNA regulators of acetylcholine packaging and degradation in neuroinflammation-related disorders. Front Mol Neurosci 2014; 7:9. [PMID: 24574962 PMCID: PMC3918661 DOI: 10.3389/fnmol.2014.00009] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2013] [Accepted: 01/21/2014] [Indexed: 01/13/2023] Open
Abstract
MicroRNAs (miRNAs) can notably control many targets each and regulate entire cellular pathways, but whether miRNAs can regulate complete neurotransmission processes is largely unknown. Here, we report that miRNAs with complementary sequence motifs to the key genes involved in acetylcholine (ACh) synthesis and/or packaging show massive overlap with those regulating ACh degradation. To address this topic, we first searched for miRNAs that could target the 3′-untranslated regions of the choline acetyltransferase (ChAT) gene that controls ACh synthesis; the vesicular ACh transporter (VAChT), encoded from an intron in the ChAT gene and the ACh hydrolyzing genes acetyl- and/or butyrylcholinesterase (AChE, BChE). Intriguingly, we found that many of the miRNAs targeting these genes are primate-specific, and that changes in their levels associate with inflammation, anxiety, brain damage, cardiac, neurodegenerative, or pain-related syndromes. To validate the in vivo relevance of this dual interaction, we selected the evolutionarily conserved miR-186, which targets both the stress-inducible soluble “readthrough” variant AChE-R and the major peripheral cholinesterase BChE. We exposed mice to predator scent stress and searched for potential associations between consequent changes in their miR-186, AChE-R, and BChE levels. Both intestinal miR-186 as well as BChE and AChE-R activities were conspicuously elevated 1 week post-exposure, highlighting the previously unknown involvement of miR-186 and BChE in psychological stress responses. Overlapping miRNA regulation emerges from our findings as a recently evolved surveillance mechanism over cholinergic neurotransmission in health and disease; and the corresponding miRNA details and disease relevance may serve as a useful resource for studying the molecular mechanisms underlying this surveillance.
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Affiliation(s)
- Bettina Nadorp
- Department of Biological Chemistry and the Center for Bioengineering, The Edmond and Lily Safra Center for Brain Science, The Hebrew University of Jerusalem Jerusalem, Israel
| | - Hermona Soreq
- Department of Biological Chemistry and the Center for Bioengineering, The Edmond and Lily Safra Center for Brain Science, The Hebrew University of Jerusalem Jerusalem, Israel
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Presymptomatic treatment with acetylcholinesterase antisense oligonucleotides prolongs survival in ALS (G93A-SOD1) mice. BIOMED RESEARCH INTERNATIONAL 2013; 2013:845345. [PMID: 24455732 PMCID: PMC3881454 DOI: 10.1155/2013/845345] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 10/10/2013] [Indexed: 01/16/2023]
Abstract
Objective. Previous research suggests that acetylcholinesterase (AChE) may be involved in ALS pathogenesis. AChE enzyme inhibitors can upregulate AChE transcription which in certain contexts can have deleterious (noncatalytic) effects, making them theoretically harmful in ALS, whilst AChE antisense-oligonucleotides (mEN101), which downregulate AChE may be beneficial. Our aim was to investigate whether downregulation of AChE using mEN101 is beneficial in an ALS mouse model. Methods. ALS (G93A-SOD1) mice received saline, mEN101, inverse-EN101, or neostigmine. Treatments were administered from 5 weeks. Disease-onset and survival were recorded. Additional mice were sacrificed for pathological analysis at 15 weeks of age. In a follow-up experiment treatment was started at the symptomatic stage at a higher dose. Results. mEN101 given at the presymptomatic (but not symptomatic) stage prolonged survival and attenuated motor-neuron loss in ALS mice. In contrast, neostigmine exacerbated the clinical parameters. Conclusions. These results suggest that AChE may be involved in ALS pathogenesis. The accelerated disease course with neostigmine suggests that any beneficial effects of mEN101 occur through a non-catalytic rather than cholinergic mechanism.
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AChE and RACK1 promote the anti-inflammatory properties of fluoxetine. J Mol Neurosci 2013; 53:306-15. [PMID: 24258317 DOI: 10.1007/s12031-013-0174-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2013] [Accepted: 11/05/2013] [Indexed: 10/26/2022]
Abstract
Selective serotonin reuptake inhibitors (SSRIs) show anti-inflammatory effects, suggesting a possible interaction with both Toll-like-receptor 4 (TLR4) responses and cholinergic signaling through as yet unclear molecular mechanism(s). Our results of structural modeling support the concept that the antidepressant fluoxetine physically interacts with the TLR4-myeloid differentiation factor-2 complex at the same site as bacterial lipopolysaccharide (LPS). We also demonstrate reduced LPS-induced pro-inflammatory interleukin-6 and tumor necrosis factor alpha in human peripheral blood mononuclear cells preincubated with fluoxetine. Furthermore, we show that fluoxetine intercepts the LPS-induced decreases in intracellular acetylcholinesterase (AChE-S) and that AChE-S interacts with the nuclear factor kappa B (NFκB)-activating intracellular receptor for activated C kinase 1 (RACK1). This interaction may prevent NFκB activation by residual RACK1 and its interacting protein kinase PKCβII. Our findings attribute the anti-inflammatory properties of SSRI to surface membrane interference with leukocyte TLR4 activation accompanied by intracellular limitation of pathogen-inducible changes in AChE-S, RACK1, and PKCβII.
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Ferreira AC, Pinto V, Dá Mesquita S, Novais A, Sousa JC, Correia-Neves M, Sousa N, Palha JA, Marques F. Lipocalin-2 is involved in emotional behaviors and cognitive function. Front Cell Neurosci 2013; 7:122. [PMID: 23908604 PMCID: PMC3725407 DOI: 10.3389/fncel.2013.00122] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2013] [Accepted: 07/11/2013] [Indexed: 11/13/2022] Open
Abstract
Lipocalin-2 (LCN2), an iron-related protein well described to participate in the innate immune response, has been shown to modulate spine morphology and to regulate neuronal excitability. In accordance, LCN2-null mice are reported to have stress-induced anxiety. Here we show that, under standard housing conditions, LCN2-null mice display anxious and depressive-like behaviors, as well as cognitive impairment in spatial learning tasks. These behavioral alterations were associated with a hyperactivation of the hypothalamic-pituitary-adrenal axis and with an altered brain cytoarchitecture in the hippocampus. More specifically, we found that the granular and pyramidal neurons of the ventral hippocampus, a region described to be associated with emotion, were hypertrophic, while neurons from the dorsal hippocampus, a region implicated in memory and cognition, were atrophic. In addition, LCN2-null mice presented synaptic impairment in hippocampal long-term potentiation. Whether the LCN2 effects are mediated through modulation of the level of corticosteroids or through a novel mechanism, the present observations bring further into light this immune-related protein as a player in the fine-tuning of behavior and of synaptic activity.
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Affiliation(s)
- Ana C Ferreira
- Life and Health Sciences Research Institute (ICVS), School of Health Sciences, University of Minho Braga, Portugal ; ICVS/3B's - PT Government Associate Laboratory Braga/Guimarães, Portugal
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Shastri A, Bonifati DM, Kishore U. Innate immunity and neuroinflammation. Mediators Inflamm 2013; 2013:342931. [PMID: 23843682 PMCID: PMC3697414 DOI: 10.1155/2013/342931] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2013] [Accepted: 05/15/2013] [Indexed: 01/07/2023] Open
Abstract
Inflammation of central nervous system (CNS) is usually associated with trauma and infection. Neuroinflammation occurs in close relation to trauma, infection, and neurodegenerative diseases. Low-level neuroinflammation is considered to have beneficial effects whereas chronic neuroinflammation can be harmful. Innate immune system consisting of pattern-recognition receptors, macrophages, and complement system plays a key role in CNS homeostasis following injury and infection. Here, we discuss how innate immune components can also contribute to neuroinflammation and neurodegeneration.
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Affiliation(s)
- Abhishek Shastri
- Centre for Infection, Immunity and Disease Mechanisms, Heinz Wolff Building, Brunel University, London UB8 3PH, UK
| | - Domenico Marco Bonifati
- Unit of Neurology, Department of Neurological Disorders, Santa Chiara Hospital, Largo Medaglie d'oro 1, 38100 Trento, Italy
| | - Uday Kishore
- Centre for Infection, Immunity and Disease Mechanisms, Heinz Wolff Building, Brunel University, London UB8 3PH, UK
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Stress-induced epigenetic transcriptional memory of acetylcholinesterase by HDAC4. Proc Natl Acad Sci U S A 2012; 109:E3687-95. [PMID: 23236169 DOI: 10.1073/pnas.1209990110] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Stress induces long-lasting changes in neuronal gene expression and cholinergic neurotransmission, but the underlying mechanism(s) are incompletely understood. Here, we report that chromatin structure and histone modifications are causally involved in this transcriptional memory. Specifically, the AChE gene encoding the acetylcholine-hydrolyzing enzyme acetylcholinesterase is known to undergo long-lasting transcriptional and alternative splicing changes after stress. In mice subjected to stress, we identified two alternative 5' exons that were down-regulated after stress in the hippocampus, accompanied by reduced acetylation and elevated trimethylation of H3K9 at the corresponding promoter. These effects were reversed completely by daily administration of the histone deacetylase (HDAC) inhibitor sodium butyrate for 1 wk after stress. H3K9 hypoacetylation was associated with a selective, sodium butyrate-reversible promoter accumulation of HDAC4. Hippocampal suppression of HDAC4 in vivo completely abolished the long-lasting AChE-related and behavioral stress effects. Our findings demonstrate long-lasting stress-inducible changes in AChE's promoter choices, identify the chromatin changes that support this long-term transcriptional memory, and reveal HDAC4 as a mediator of these effects in the hippocampus.
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Gilboa-Geffen A, Hartmann G, Soreq H. Stressing hematopoiesis and immunity: an acetylcholinesterase window into nervous and immune system interactions. Front Mol Neurosci 2012; 5:30. [PMID: 22448158 PMCID: PMC3305920 DOI: 10.3389/fnmol.2012.00030] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2011] [Accepted: 02/22/2012] [Indexed: 01/08/2023] Open
Abstract
Hematopoietic stem cells (HSCs) differentiate and generate all blood cell lineages while maintaining self-renewal ability throughout life. Systemic responses to stressful insults, either psychological or physical exert both stimulating and down-regulating effects on these dynamic members of the immune system. Stress-facilitated division and re-oriented differentiation of progenitor cells modifies hematopoietic cell type composition, while enhancing cytokine production and promoting inflammation. Inversely, stress-induced increases in the neurotransmitter acetylcholine (ACh) act to mitigate inflammatory response and regain homeostasis. This signaling process is terminated when ACh is hydrolyzed by acetylcholinesterase (AChE). Alternative splicing, which is stress-modified, changes the composition of AChE variants, modifying their terminal sequences, susceptibility for microRNA suppression, and sub-cellular localizations. Intriguingly, the effects of stress and AChE variants on hematopoietic development and inflammation in health and disease are both subject to small molecule as well as oligonucleotide-mediated manipulations in vitro and in vivo. The therapeutic agents can thus be targeted to the enzyme protein, its encoding mRNA transcripts, or the regulator microRNA-132, opening new venues for therapeutic interference with multiple nervous and immune system diseases.
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Affiliation(s)
- Adi Gilboa-Geffen
- The Edmond and Lily Safra Center for Brain Sciences and the Institute of Life Sciences, The Hebrew University of Jerusalem Jerusalem, Israel
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