Neuroglia (Basel, Switzerland)最新文献

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The Role of Oligodendrocytes in Alzheimer’s Disease Pathogenesis and Therapy 少突胶质细胞在阿尔茨海默病发病机制和治疗中的作用
Neuroglia (Basel, Switzerland) Pub Date : 2025-12-11 DOI: 10.3390/neuroglia6040046
Shihui Guo, Xinyi Yu, Hongsheng Zhang
{"title":"The Role of Oligodendrocytes in Alzheimer’s Disease Pathogenesis and Therapy","authors":"Shihui Guo, Xinyi Yu, Hongsheng Zhang","doi":"10.3390/neuroglia6040046","DOIUrl":"https://doi.org/10.3390/neuroglia6040046","url":null,"abstract":"Oligodendrocytes (OLs) constitute the main glial population in the central nervous system and are indispensable for the stability and performance of neural networks. Although best known for generating and maintaining myelin to speed impulse conduction, their influence extends further. By modulating myelin in response to activity, supplying metabolic substrates, and engaging in neuroimmune communication, OLs help preserve the structural integrity and plasticity of neuronal circuits. Growing evidence now positions defective OLs as central players in Alzheimer’s disease (AD). Experimental work suggests that OL injury can act as an early trigger, fostering amyloid-β (Aβ) deposition and Tau hyperphosphorylation. Conversely, toxic Aβ aggregates and pathological Tau proteins damage OLs, causing myelin breakdown and progressive neurodegeneration that fuels a self-perpetuating cycle. Here, we synthesize current knowledge of OL physiology and its multifaceted contributions to AD pathogenesis, with particular attention to the bidirectional interplay between OL dysfunction and the disease’s core features—Aβ and tau. On this basis, we outline prospective therapeutic avenues to protect or restore oligodendrocyte function in AD.","PeriodicalId":74275,"journal":{"name":"Neuroglia (Basel, Switzerland)","volume":"6 4","pages":"46-46"},"PeriodicalIF":0.0,"publicationDate":"2025-12-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2571-6980/6/4/46/pdf?version=1765456271","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147896947","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Aging Effects on Metabolic Sensor and Glycogen Metabolism in Old Male versus Female Rat Primary Hypothalamic Astrocyte Cultures. 衰老对老龄雌雄大鼠下丘脑星形胶质细胞培养代谢传感器和糖原代谢的影响。
IF 2.2
Neuroglia (Basel, Switzerland) Pub Date : 2025-12-01 Epub Date: 2025-11-01 DOI: 10.3390/neuroglia6040041
Rami Shrestha, Madhu Babu Pasula, Karen P Briski
{"title":"Aging Effects on Metabolic Sensor and Glycogen Metabolism in Old Male versus Female Rat Primary Hypothalamic Astrocyte Cultures.","authors":"Rami Shrestha, Madhu Babu Pasula, Karen P Briski","doi":"10.3390/neuroglia6040041","DOIUrl":"10.3390/neuroglia6040041","url":null,"abstract":"<p><strong>Background/objectives: </strong>Compartmentalized glucose metabolism in the brain contributes to neuro-metabolic stability and shapes hypothalamic control of glucose homeostasis. Glucose transporter-2 (GLUT2) is a plasma membrane glucose sensor that exerts sex-specific control of hypothalamic astrocyte glucose and glycogen metabolism. Aging causes counterregulatory dysfunction.</p><p><strong>Methods: </strong>Current research used Western blot and HPLC-electrospray ionization-mass spectrometry to investigate whether aging affects GLUT2-dependent hypothalamic astrocyte metabolic sensor and glycogen enzyme protein expression and glycogen mass according to sex.</p><p><strong>Results: </strong>Data document GLUT2-dependent up-regulated glucokinase (GCK) protein in glucose-deprived old male and female astrocyte cultures, unlike GLUT2 inhibition of this protein in young astrocytes. Glucoprivation of old male and female astrocytes caused GLUT2-independent down-regulation of 5'-AMP-activated protein kinase (AMPK) protein, indicating loss of GLUT2 stimulation of this protein with age. This metabolic stress also caused GLUT2-dependent suppression of phospho-AMPK profiles in each sex, differing from GLUT2-mediated glucoprivic enhancement of activated AMPK in young male astrocytes and phospho-AMPK insensitivity to glucoprivation in young female cultures. GS and GP isoform proteins were refractory to glucoprivation of old male cultures, contrary to down-regulation of these proteins in young glucose-deprived male astrocytes. Aging elicited a shift from GLUT2 inhibition to stimulation of male astrocyte glycogen accumulation and caused gain of GLUT2 control of female astrocyte glycogen.</p><p><strong>Conclusions: </strong>Outcomes document sex-specific, aging-related alterations in GLUT2 control of hypothalamic astrocyte glucose and ATP monitoring and glycogen mass and metabolism. Results warrant future initiatives to assess how these adjustments in hypothalamic astrocyte function may affect neural operations that are shaped by astrocyte-neuron metabolic partnership.</p>","PeriodicalId":74275,"journal":{"name":"Neuroglia (Basel, Switzerland)","volume":"6 4","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12732729/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145835423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Astrocyte FABP7 Modulates Seizure Activity-Dependent Protein Expression in Mouse Brain. 星形胶质细胞FABP7调节小鼠大脑癫痫活动依赖蛋白的表达。
IF 2.2
Neuroglia (Basel, Switzerland) Pub Date : 2025-09-01 Epub Date: 2025-09-03 DOI: 10.3390/neuroglia6030033
Adam P Berg, Shahroz H Tariq, Carlos C Flores, Micah Lefton, Yuji Owada, Christopher J Davis, Thomas N Ferraro, Jon M Jacobs, Marina A Gritsenko, Yool Lee, Wheaton L Schroeder, Jason R Gerstner
{"title":"Astrocyte FABP7 Modulates Seizure Activity-Dependent Protein Expression in Mouse Brain.","authors":"Adam P Berg, Shahroz H Tariq, Carlos C Flores, Micah Lefton, Yuji Owada, Christopher J Davis, Thomas N Ferraro, Jon M Jacobs, Marina A Gritsenko, Yool Lee, Wheaton L Schroeder, Jason R Gerstner","doi":"10.3390/neuroglia6030033","DOIUrl":"10.3390/neuroglia6030033","url":null,"abstract":"<p><strong>Background/objectives: </strong>Patients with epilepsy commonly experience patterns of seizures that change with sleep/wake behavior or diurnal rhythms. The cellular and molecular mechanisms that underlie these patterns in seizure activity are not well understood but may involve non-neuronal cells, such as astrocytes. Our previous studies show the critical importance of one specific astrocyte factor, the brain-type fatty acid binding protein Fabp7, in the regulation of time-of-day-dependent electroshock seizure threshold and neural activity-dependent gene expression in mice. Here, we examined whether Fabp7 influences differential seizure activity-dependent protein expression, by comparing <i>Fabp7</i> knockout (KO) to wild-type (WT) mice under control conditions and after reaching the maximal electroshock seizure threshold (MEST).</p><p><strong>Methods: </strong>We analyzed the proteome in cortical-hippocampal extracts from MEST and SHAM groups of WT and KO mice using mass spectrometry (MS), followed by Gene Ontology (GO) and pathway analyses. GO and pathway analyses of all groups revealed a diverse set of up- and downregulated differentially expressed proteins (DEPs).</p><p><strong>Results: </strong>We identified 65 significant DEPs in the comparison of KO SHAM versus WT SHAM; 33 proteins were upregulated and 32 were downregulated. We found downregulation in mitochondrial-associated proteins in WT MEST compared to WT SHAM controls, including Slc1a4, Slc25a27, Cox7a2, Cox8a, Micos10, and Atp5mk. Several upregulated DEPs in the KO SHAM versus WT SHAM comparison were associated with the 20S proteasomal subunit, suggesting proteasomal activity is elevated in the absence of Fabp7 expression. We also observed 92 DEPs significantly altered in the KO MEST versus WT MEST, with 49 proteins upregulated and 43 downregulated.</p><p><strong>Conclusions: </strong>Together, these data suggest that the astrocyte Fabp7 regulation of time-of-day-mediated neural excitability is modulated by multiple cellular mechanisms, which include proteasomal pathways, independent of its role in activity-dependent gene expression.</p>","PeriodicalId":74275,"journal":{"name":"Neuroglia (Basel, Switzerland)","volume":"6 3","pages":""},"PeriodicalIF":2.2,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12674186/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145679591","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Central and Peripheral Immunity Responses in Parkinson’s Disease: An Overview and Update 帕金森病的中枢和外周免疫反应:综述和最新进展
Neuroglia (Basel, Switzerland) Pub Date : 2025-04-04 DOI: 10.3390/neuroglia6020017
Ghaidaa Ebrahim, Hunter Hutchinson, Melanie L. Gonzalez, Abeer Dagra
{"title":"Central and Peripheral Immunity Responses in Parkinson’s Disease: An Overview and Update","authors":"Ghaidaa Ebrahim, Hunter Hutchinson, Melanie L. Gonzalez, Abeer Dagra","doi":"10.3390/neuroglia6020017","DOIUrl":"https://doi.org/10.3390/neuroglia6020017","url":null,"abstract":"Parkinson’s disease (PD) is a progressive neurodegenerative disorder characterized by motor and non-motor symptoms, with increasing evidence supporting the role of immune dysregulation in its pathophysiology. Neuroinflammation, mediated by microglial activation, pro-inflammatory cytokine production, and blood–brain barrier dysfunction, plays a crucial role in dopaminergic neuronal degeneration. Furthermore, peripheral immune changes, including T cell infiltration, gut microbiota dysbiosis, and systemic inflammation, contribute to disease progression. The bidirectional interaction between the central and peripheral immune systems suggests that immune-based interventions may hold therapeutic potential. While dopaminergic treatments remain the standard of care, immunomodulatory therapies, monoclonal antibodies targeting α-synuclein, and deep brain stimulation (DBS) have demonstrated immunological effects, though clinical efficacy remains uncertain. Advances in immune phenotyping offer new avenues for personalized treatment approaches, optimizing therapeutic responses by stratifying patients based on inflammatory biomarkers. This review highlights the complexities of immune involvement in PD and discusses emerging strategies targeting immune pathways to develop disease-modifying treatments.","PeriodicalId":74275,"journal":{"name":"Neuroglia (Basel, Switzerland)","volume":"6 2","pages":"17-17"},"PeriodicalIF":0.0,"publicationDate":"2025-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.mdpi.com/2571-6980/6/2/17/pdf?version=1743757116","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147883448","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 4
Sex and Region-Specific Differences in Microglial Morphology and Function Across Development. 发育过程中小胶质细胞形态和功能的性别和区域特异性差异。
Neuroglia (Basel, Switzerland) Pub Date : 2025-03-01 Epub Date: 2025-01-04 DOI: 10.3390/neuroglia6010002
Indra R Bishnoi, Evan A Bordt
{"title":"Sex and Region-Specific Differences in Microglial Morphology and Function Across Development.","authors":"Indra R Bishnoi, Evan A Bordt","doi":"10.3390/neuroglia6010002","DOIUrl":"10.3390/neuroglia6010002","url":null,"abstract":"<p><p>Microglia are exceptionally dynamic resident innate immune cells within the central nervous system, existing on a continuum of morphologies and functions throughout their lifespan. They play vital roles in response to injuries and infections, clearing cellular debris, and maintaining neural homeostasis throughout development. Emerging research suggests that microglia are strongly influenced by biological factors, including sex, developmental stage, and their local environment. This review synthesizes findings on sex differences in microglial morphology and function in key brain regions, including the frontal cortex, hippocampus, amygdala, hypothalamus, basal ganglia, and cerebellum, across the lifespan. Where available, we examine how gonadal hormones influence these microglial characteristics. Additionally, we highlight the limitations of relying solely on morphology to infer function and underscore the need for comprehensive, multimodal approaches to guide future research. Ultimately, this review aims to advance the dialogue on these spatiotemporally heterogeneous cells and their implications for sex differences in brain function and vulnerability to neurological and psychiatric disorders.</p>","PeriodicalId":74275,"journal":{"name":"Neuroglia (Basel, Switzerland)","volume":"6 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11967618/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143782056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Dynamic Neuro-Glial-Vascular Responses in a Mouse Model of Vascular Cognitive Impairment. 血管性认知障碍小鼠模型的动态神经胶质血管反应。
Neuroglia (Basel, Switzerland) Pub Date : 2024-12-01 Epub Date: 2024-12-19 DOI: 10.3390/neuroglia5040032
Ki Jung Kim, Rachel E Patterson, Juan Ramiro Diaz, Philip O'Herron, Weston Bush, Ferdinand Althammer, Javier E Stern, Michael W Brands, Zsolt Bagi, Jessica A Filosa
{"title":"Dynamic Neuro-Glial-Vascular Responses in a Mouse Model of Vascular Cognitive Impairment.","authors":"Ki Jung Kim, Rachel E Patterson, Juan Ramiro Diaz, Philip O'Herron, Weston Bush, Ferdinand Althammer, Javier E Stern, Michael W Brands, Zsolt Bagi, Jessica A Filosa","doi":"10.3390/neuroglia5040032","DOIUrl":"10.3390/neuroglia5040032","url":null,"abstract":"<p><strong>Background: </strong>Chronic hypoperfusion is a risk factor for neurodegenerative diseases. However, the sequence of events driving ischemia-induced functional changes in a cell-specific manner is unclear.</p><p><strong>Methods: </strong>To address this gap in knowledge, we used the bilateral common carotid artery stenosis (BCAS) mouse model, and evaluated progressive functional changes to neurons, arterioles, astrocytes, and microglial cells at 14 and 28 days post-BCAS surgery. To assess the neuro-glio-vascular response to an acute ischemic insult, brain slices were superfused with low O<sub>2</sub> conditions. Using whole-cell patch-clamp electrophysiology, we measured basic membrane properties (e.g., resting membrane potential, capacitance, input resistance) in cortical pyramidal neurons. The activity of astrocytes was evaluated by monitoring Ca<sup>2+</sup> from <i>Aldh1l1-CreERT2</i>; <i>R26-lsl-GCaMP6f</i> mice. Vascular reactivity to low O<sub>2</sub> from the BCAS mice was also assessed ex vivo.</p><p><strong>Results: </strong>Our data showed no changes to the basic membrane properties of cortical pyramidal neurons. On the other hand, astrocyte activity was characterized by a progressive increase in the resting Ca<sup>2+</sup>. Notably, at 14 and 28 days post-BCAS, there was an increased expression of anti-inflammatory-related markers (IL-10, S100A10, TRPA1, and Nrf2). These data suggest that, in young mice, BCAS-induced increases in resting Ca<sup>2+</sup> were associated with the expression of neuroprotective signals. Contrary to observations in glial cells, vascular function was impaired post-BCAS surgery, as shown by a blunted vasodilatory response to low O<sub>2</sub> and the vasodilatory signal, adenosine.</p><p><strong>Conclusions: </strong>Together, these data suggest that, in young mice, BCAS leads to vascular dysfunction (e.g., impaired vasodilation in parenchymal arterioles), and in the absence of neuronal dysfunction, mild ischemia is associated with the activation of glial-derived neuroprotective signals.</p>","PeriodicalId":74275,"journal":{"name":"Neuroglia (Basel, Switzerland)","volume":"5 4","pages":"505-521"},"PeriodicalIF":0.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12393155/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144981668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Ethanol Exacerbates the Alzheimer's Disease Pathology in the 5xFAD Mouse Model. 乙醇在5xFAD小鼠模型中加重阿尔茨海默病病理
Neuroglia (Basel, Switzerland) Pub Date : 2024-09-01 Epub Date: 2024-08-02 DOI: 10.3390/neuroglia5030020
Hassan E Mohammed, James C Nelson, S Alex Marshall
{"title":"Ethanol Exacerbates the Alzheimer's Disease Pathology in the 5xFAD Mouse Model.","authors":"Hassan E Mohammed, James C Nelson, S Alex Marshall","doi":"10.3390/neuroglia5030020","DOIUrl":"10.3390/neuroglia5030020","url":null,"abstract":"<p><p>Alzheimer's disease (AD) is the most common form of dementia with characteristic biological markers. Clinically, AD presents as declines in memory, reasoning, and decision making, but the loss of memory is particularly associated with hippocampal damage. Likewise, excessive ethanol consumption has been found to disrupt hippocampal function and integrity. To assess the potential shared consequences of AD pathology and ethanol, 5xFAD mice were administered 5 g/kg ethanol daily for 10 days. Immunohistochemical analysis revealed ethanol and AD converged to lead to microglial and astrocytic senescence as well as increased Aß-plaque formation in the hippocampus. Despite the exacerbation of these potential mechanisms of neurodegeneration, there were no additive effects of ethanol exposure and AD-related genotype on Fluoro-Jade C (FJC)+ cells or cognitive deficits in the novel object recognition task. Overall, these results are the first to characterize the effects of ethanol exposure on early adulthood in the 5xFAD mouse model. Together these findings support the idea that alcohol can influence AD pathology; however, the mechanisms involved in AD progression (e.g., glial activation and Aß-plaque) may be impacted prior to evidence of pathology (e.g., cognitive decline or neuronal loss).</p>","PeriodicalId":74275,"journal":{"name":"Neuroglia (Basel, Switzerland)","volume":"5 3","pages":"289-305"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12140071/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144236136","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Comparison of the Transduction Capacity of AAV5 and AAV PHP.eB Serotypes in Hippocampus Astroglia AAV5与aavphp转导能力的比较。海马星形胶质细胞eB血清型
Neuroglia (Basel, Switzerland) Pub Date : 2023-11-01 DOI: 10.3390/neuroglia4040019
Anastasia Borodinova, Victor Ierusalimsky, Pavel Balaban
{"title":"Comparison of the Transduction Capacity of AAV5 and AAV PHP.eB Serotypes in Hippocampus Astroglia","authors":"Anastasia Borodinova, Victor Ierusalimsky, Pavel Balaban","doi":"10.3390/neuroglia4040019","DOIUrl":"https://doi.org/10.3390/neuroglia4040019","url":null,"abstract":"In the present study, we compared the astrocyte-transducing potential of the relatively novel engineered AAV PHP.eB serotype and the well-examined conventional AAV5 serotype. We generated the AAV-based genetic constructs with membrane-bound fluorescent markers under the control of the astroglial promoter GfaABC1D to target astrocytes in vivo, either via local injection into the hippocampus (AAV5, AAV PHP.eB) or via systemic injection in the retro-orbital venous sinus (AAV PHP.eB). We collected new data on the transduction properties of locally injected PHP.eB and AAV5 viruses. A morphological examination and immunostainings of mouse brain slices revealed a dose-dependent shift of cellular tropism for locally injected PHP.eB from astroglial to astroglial-neuronal as the concentration increased. When the high doses of PHP.eB viruses were administered systemically, we observed strong astrocyte transduction throughout the brain, as confirmed by the morphological examination and GFAP immunostaining. AAV5 exhibited consistent astrocytic expression in all tested concentrations. The obtained results suggest that AAV5 is more suitable for astrocyte targeting in routine stereotaxic viral injection experiments. The widely used engineered PHP.eB capsid was originally designed for the transduction of both neurons and glia. Dual cellular tropism of PHP.eB viruses, observed using different doses and different delivery protocols (local vs. systemic), suggests that the usage of AAV5 is more reliable for astrocyte labeling and that intrahippocampal injection is more suitable than systemic injection for the preferential labeling of hippocampal astroglia.","PeriodicalId":74275,"journal":{"name":"Neuroglia (Basel, Switzerland)","volume":"7 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135271639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The Signaling of Neuregulin-Epidermal Growth Factor Receptors and Its Impact on the Nervous System 神经调节-表皮生长因子受体的信号传导及其对神经系统的影响
Neuroglia (Basel, Switzerland) Pub Date : 2023-10-13 DOI: 10.3390/neuroglia4040018
Marzia Tagliaferro, Donatella Ponti
{"title":"The Signaling of Neuregulin-Epidermal Growth Factor Receptors and Its Impact on the Nervous System","authors":"Marzia Tagliaferro, Donatella Ponti","doi":"10.3390/neuroglia4040018","DOIUrl":"https://doi.org/10.3390/neuroglia4040018","url":null,"abstract":"The activation of members of the Epidermal Growth Factor Receptor (EGFR) family (including ErbB) triggers pathways that have significant effects on cellular processes and have profound consequences both in physiological and pathological conditions. Within the nervous system, the neuregulin (NRG)/ErbB3 signaling plays a crucial role in promoting the formation and maturation of excitatory synapses. Noteworthy is ErbB3, which is actively involved in the process of cerebellar lamination and myelination. All members of the ErbB-family, in particular ErbB3, have been observed within the nuclei of various cell types, including both full-length receptors and alternative variants. One of these variants was detected in Schwann cells and in glioblastoma primary cells where it showed a neuregulin-dependent expression. It binds to promoters’ chromatin associated with genes, like ezrin, involved in the formation of Ranvier’s node. Its nucleolar localization suggests that it may play a role in ribosome biogenesis and in cell proliferation. The regulation of ErbB3 expression is a complex and dynamic process that can be influenced by different factors, including miRNAs. This mechanism appears to play a significant role in glioblastoma and is often associated with a poor prognosis. Altogether, the targeting of ErbB3 has emerged as an active area of research in glioblastoma treatment. These findings highlight the underappreciated role of ErbB3 as a significant receptor that can potentially play a pivotal role in diverse pathologies, implying the existence of a shared and intricate mechanism that warrants further investigation.","PeriodicalId":74275,"journal":{"name":"Neuroglia (Basel, Switzerland)","volume":"257 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135918831","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
GABAA-ρ Receptors in the CNS: Their Functional, Pharmacological, and Structural Properties in Neurons and Astroglia 中枢神经系统中的GABAA-ρ受体:它们在神经元和星形胶质细胞中的功能、药理和结构特性
Neuroglia (Basel, Switzerland) Pub Date : 2023-10-08 DOI: 10.3390/neuroglia4040017
Abraham Rosas-Arellano, Argel Estrada-Mondragón, Ataúlfo Martínez-Torres, Daniel Reyes-Haro
{"title":"GABAA-ρ Receptors in the CNS: Their Functional, Pharmacological, and Structural Properties in Neurons and Astroglia","authors":"Abraham Rosas-Arellano, Argel Estrada-Mondragón, Ataúlfo Martínez-Torres, Daniel Reyes-Haro","doi":"10.3390/neuroglia4040017","DOIUrl":"https://doi.org/10.3390/neuroglia4040017","url":null,"abstract":"Gamma-aminobutyric acid (GABA) is known as the main inhibitory transmitter in the central nervous system (CNS), where it hyperpolarizes mature neurons through activation of GABAA receptors, pentameric complexes assembled by combination of subunits (α1–6, β1–3, γ1–3, δ, ε, θ, π and ρ1–3). GABAA-ρ subunits were originally described in the retina where they generate non-desensitizing Cl- currents that are insensitive to bicuculline and baclofen. However, now is known that they are widely expressed throughout the brain including glial cells. For example, whole-cell patch-clamp recordings demonstrated the functional expression of GABAA-ρ receptors in primary cultures of cerebellar astrocytes, as well as in cerebellar ependymal cells and striatal astrocytes. In these cells GABA-currents were partially blocked by TPMPA and insensitive to barbiturates. These receptors are proposed to be involved in extrasynaptic communication and dysfunction of the signaling is accompanied by reduced expression of GABAA-ρ receptors in Huntington’s disease and autism spectrum disorders (ASD). Thus, the aim of this review is to present an overview about GABAA-ρ receptors including their structure and function, as well as their importance in the excitatory/inhibitory (E/I) balance in neurodevelopment and in disease.","PeriodicalId":74275,"journal":{"name":"Neuroglia (Basel, Switzerland)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135251454","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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