Translational Neurodegeneration最新文献

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Inhibiting tau-induced elevated nSMase2 activity and ceramides is therapeutic in an Alzheimer's disease mouse model. 抑制tau诱导的nSMase2活性升高和神经酰胺在阿尔茨海默病小鼠模型中具有治疗作用。
IF 12.6 1区 医学
Translational Neurodegeneration Pub Date : 2023-12-04 DOI: 10.1186/s40035-023-00383-9
Carolyn Tallon, Benjamin J Bell, Medhinee M Malvankar, Pragney Deme, Carlos Nogueras-Ortiz, Erden Eren, Ajit G Thomas, Kristen R Hollinger, Arindom Pal, Maja Mustapic, Meixiang Huang, Kaleem Coleman, Tawnjerae R Joe, Rana Rais, Norman J Haughey, Dimitrios Kapogiannis, Barbara S Slusher
{"title":"Inhibiting tau-induced elevated nSMase2 activity and ceramides is therapeutic in an Alzheimer's disease mouse model.","authors":"Carolyn Tallon, Benjamin J Bell, Medhinee M Malvankar, Pragney Deme, Carlos Nogueras-Ortiz, Erden Eren, Ajit G Thomas, Kristen R Hollinger, Arindom Pal, Maja Mustapic, Meixiang Huang, Kaleem Coleman, Tawnjerae R Joe, Rana Rais, Norman J Haughey, Dimitrios Kapogiannis, Barbara S Slusher","doi":"10.1186/s40035-023-00383-9","DOIUrl":"10.1186/s40035-023-00383-9","url":null,"abstract":"<p><strong>Background: </strong>Cognitive decline in Alzheimer's disease (AD) is associated with hyperphosphorylated tau (pTau) propagation between neurons along synaptically connected networks, in part via extracellular vesicles (EVs). EV biogenesis is triggered by ceramide enrichment at the plasma membrane from neutral sphingomyelinase2 (nSMase2)-mediated cleavage of sphingomyelin. We report, for the first time, that human tau expression elevates brain ceramides and nSMase2 activity.</p><p><strong>Methods: </strong>To determine the therapeutic benefit of inhibiting this elevation, we evaluated PDDC, the first potent, selective, orally bioavailable, and brain-penetrable nSMase2 inhibitor in the transgenic PS19 AD mouse model. Additionally, we directly evaluated the effect of PDDC on tau propagation in a mouse model where an adeno-associated virus (AAV) encoding P301L/S320F double mutant human tau was stereotaxically-injected unilaterally into the hippocampus. The contralateral transfer of the double mutant human tau to the dentate gyrus was monitored. We examined ceramide levels, histopathological changes, and pTau content within EVs isolated from the mouse plasma.</p><p><strong>Results: </strong>Similar to human AD, the PS19 mice exhibited increased brain ceramide levels and nSMase2 activity; both were completely normalized by PDDC treatment. The PS19 mice also exhibited elevated tau immunostaining, thinning of hippocampal neuronal cell layers, increased mossy fiber synaptophysin immunostaining, and glial activation, all of which were pathologic features of human AD. PDDC treatment reduced these changes. The plasma of PDDC-treated PS19 mice had reduced levels of neuronal- and microglial-derived EVs, the former carrying lower pTau levels, compared to untreated mice. In the tau propagation model, PDDC normalized the tau-induced increase in brain ceramides and significantly reduced the amount of tau propagation to the contralateral side.</p><p><strong>Conclusions: </strong>PDDC is a first-in-class therapeutic candidate that normalizes elevated brain ceramides and nSMase2 activity, leading to the slowing of tau spread in AD mice.</p>","PeriodicalId":23269,"journal":{"name":"Translational Neurodegeneration","volume":"12 1","pages":"56"},"PeriodicalIF":12.6,"publicationDate":"2023-12-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10694940/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138483028","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Neuronal and synaptic adaptations underlying the benefits of deep brain stimulation for Parkinson's disease. 深层脑刺激治疗帕金森病的好处背后的神经元和突触适应。
IF 12.6 1区 医学
Translational Neurodegeneration Pub Date : 2023-11-30 DOI: 10.1186/s40035-023-00390-w
Wenying Xu, Jie Wang, Xin-Ni Li, Jingxue Liang, Lu Song, Yi Wu, Zhenguo Liu, Bomin Sun, Wei-Guang Li
{"title":"Neuronal and synaptic adaptations underlying the benefits of deep brain stimulation for Parkinson's disease.","authors":"Wenying Xu, Jie Wang, Xin-Ni Li, Jingxue Liang, Lu Song, Yi Wu, Zhenguo Liu, Bomin Sun, Wei-Guang Li","doi":"10.1186/s40035-023-00390-w","DOIUrl":"10.1186/s40035-023-00390-w","url":null,"abstract":"<p><p>Deep brain stimulation (DBS) is a well-established and effective treatment for patients with advanced Parkinson's disease (PD), yet its underlying mechanisms remain enigmatic. Optogenetics, primarily conducted in animal models, provides a unique approach that allows cell type- and projection-specific modulation that mirrors the frequency-dependent stimulus effects of DBS. Opto-DBS research in animal models plays a pivotal role in unraveling the neuronal and synaptic adaptations that contribute to the efficacy of DBS in PD treatment. DBS-induced neuronal responses rely on a complex interplay between the distributions of presynaptic inputs, frequency-dependent synaptic depression, and the intrinsic excitability of postsynaptic neurons. This orchestration leads to conversion of firing patterns, enabling both antidromic and orthodromic modulation of neural circuits. Understanding these mechanisms is vital for decoding position- and programming-dependent effects of DBS. Furthermore, patterned stimulation is emerging as a promising strategy yielding long-lasting therapeutic benefits. Research on the neuronal and synaptic adaptations to DBS may pave the way for the development of more enduring and precise modulation patterns. Advanced technologies, such as adaptive DBS or directional electrodes, can also be integrated for circuit-specific neuromodulation. These insights hold the potential to greatly improve the effectiveness of DBS and advance PD treatment to new levels.</p>","PeriodicalId":23269,"journal":{"name":"Translational Neurodegeneration","volume":"12 1","pages":"55"},"PeriodicalIF":12.6,"publicationDate":"2023-11-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10688037/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138462862","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
N6-methyladenosine-modified circRIMS2 mediates synaptic and memory impairments by activating GluN2B ubiquitination in Alzheimer's disease. n6 -甲基腺苷修饰的circRIMS2通过激活GluN2B泛素化介导阿尔茨海默病的突触和记忆损伤。
IF 12.6 1区 医学
Translational Neurodegeneration Pub Date : 2023-11-28 DOI: 10.1186/s40035-023-00386-6
Xiong Wang, Jiazhao Xie, Lu Tan, Yanjun Lu, Na Shen, Jiaoyuan Li, Hui Hu, Huijun Li, Xiaoguang Li, Liming Cheng
{"title":"N6-methyladenosine-modified circRIMS2 mediates synaptic and memory impairments by activating GluN2B ubiquitination in Alzheimer's disease.","authors":"Xiong Wang, Jiazhao Xie, Lu Tan, Yanjun Lu, Na Shen, Jiaoyuan Li, Hui Hu, Huijun Li, Xiaoguang Li, Liming Cheng","doi":"10.1186/s40035-023-00386-6","DOIUrl":"10.1186/s40035-023-00386-6","url":null,"abstract":"<p><strong>Background: </strong>Synaptic degeneration occurs in the early stage of Alzheimer's disease (AD) before devastating symptoms, strongly correlated with cognitive decline. Circular RNAs (circRNAs) are abundantly enriched in neural tissues, and aberrant expression of circRNAs precedes AD symptoms, significantly correlated with clinical dementia severity. However, the direct relationship between circRNA dysregulation and synaptic impairment in the early stage of AD remains poorly understood.</p><p><strong>Methods: </strong>Hippocampal whole-transcriptome sequencing was performed to identify dysregulated circRNAs and miRNAs in 4-month-old wild-type and APP/PS1 mice. RNA antisense purification and mass spectrometry were utilized to unveil interactions between circRIMS2 and methyltransferase 3, N6-adenosine-methyltransferase complex catalytic subunit (METTL3). The roles of circRIMS2/miR-3968 in synaptic targeting of UBE2K-mediated ubiquitination of GluN2B subunit of NMDA receptor were evaluated via numerous lentiviruses followed by morphological staining, co-immunoprecipitation and behavioral testing. Further, a membrane-permeable peptide was used to block the ubiquitination of K1082 on GluN2B in AD mice.</p><p><strong>Results: </strong>circRIMS2 was significantly upregulated in 4-month-old APP/PS1 mice, which was mediated by METTL3-dependent N6-methyladenosine (m6A) modification. Overexpression of circRIMS2 led to synaptic and memory impairments in 4-month-old C57BL/6 mice. MiR-3968/UBE2K was validated as the downstream of circRIMS2. Elevated UBE2K induced synaptic dysfunction of AD through ubiquitinating K1082 on GluN2B. Silencing METTL3 or blocking the ubiquitination of K1082 on GluN2B with a short membrane-permeable peptide remarkably rescued synaptic dysfunction in AD mice.</p><p><strong>Conclusions: </strong>In conclusion, our study demonstrated that m6A-modified circRIMS2 mediates the synaptic and memory impairments in AD by activating the UBE2K-dependent ubiquitination and degradation of GluN2B via sponging miR-3968, providing novel therapeutic strategies for AD.</p>","PeriodicalId":23269,"journal":{"name":"Translational Neurodegeneration","volume":"12 1","pages":"53"},"PeriodicalIF":12.6,"publicationDate":"2023-11-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10683276/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138446299","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A phase 1 open-label pilot study of low-dose interleukine-2 immunotherapy in patients with Alzheimer's disease. 低剂量白介素-2免疫治疗阿尔茨海默病患者的1期开放标签试点研究
IF 12.6 1区 医学
Translational Neurodegeneration Pub Date : 2023-11-16 DOI: 10.1186/s40035-023-00387-5
Alireza Faridar, Abdulmunaim M Eid, Aaron D Thome, Weihua Zhao, David R Beers, Maria B Pascual, Mohammad O Nakawah, Gustavo C Roman, Charles S Davis, Michael Grundman, Joseph C Masdeu, Stanley H Appel
{"title":"A phase 1 open-label pilot study of low-dose interleukine-2 immunotherapy in patients with Alzheimer's disease.","authors":"Alireza Faridar, Abdulmunaim M Eid, Aaron D Thome, Weihua Zhao, David R Beers, Maria B Pascual, Mohammad O Nakawah, Gustavo C Roman, Charles S Davis, Michael Grundman, Joseph C Masdeu, Stanley H Appel","doi":"10.1186/s40035-023-00387-5","DOIUrl":"10.1186/s40035-023-00387-5","url":null,"abstract":"<p><strong>Trial registration: </strong>ClinicalTrials.gov Identifier: NCT05821153, Registered April 20 2023, Retrospectively registered, https://classic.</p><p><strong>Clinicaltrials: </strong>gov/ct2/show/NCT05821153.</p>","PeriodicalId":23269,"journal":{"name":"Translational Neurodegeneration","volume":"12 1","pages":"54"},"PeriodicalIF":12.6,"publicationDate":"2023-11-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10652426/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134649851","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Oligodendrocyte progenitor cells in Alzheimer's disease: from physiology to pathology. 阿尔茨海默病少突胶质细胞祖细胞:从生理学到病理学。
IF 12.6 1区 医学
Translational Neurodegeneration Pub Date : 2023-11-14 DOI: 10.1186/s40035-023-00385-7
Peibin Zou, Chongyun Wu, Timon Cheng-Yi Liu, Rui Duan, Luodan Yang
{"title":"Oligodendrocyte progenitor cells in Alzheimer's disease: from physiology to pathology.","authors":"Peibin Zou, Chongyun Wu, Timon Cheng-Yi Liu, Rui Duan, Luodan Yang","doi":"10.1186/s40035-023-00385-7","DOIUrl":"10.1186/s40035-023-00385-7","url":null,"abstract":"<p><p>Oligodendrocyte progenitor cells (OPCs) play pivotal roles in myelin formation and phagocytosis, communicating with neighboring cells and contributing to the integrity of the blood-brain barrier (BBB). However, under the pathological circumstances of Alzheimer's disease (AD), the brain's microenvironment undergoes detrimental changes that significantly impact OPCs and their functions. Starting with OPC functions, we delve into the transformation of OPCs to myelin-producing oligodendrocytes, the intricate signaling interactions with other cells in the central nervous system (CNS), and the fascinating process of phagocytosis, which influences the function of OPCs and affects CNS homeostasis. Moreover, we discuss the essential role of OPCs in BBB formation and highlight the critical contribution of OPCs in forming CNS-protective barriers. In the context of AD, the deterioration of the local microenvironment in the brain is discussed, mainly focusing on neuroinflammation, oxidative stress, and the accumulation of toxic proteins. The detrimental changes disturb the delicate balance in the brain, impacting the regenerative capacity of OPCs and compromising myelin integrity. Under pathological conditions, OPCs experience significant alterations in migration and proliferation, leading to impaired differentiation and a reduced ability to produce mature oligodendrocytes. Moreover, myelin degeneration and formation become increasingly active in AD, contributing to progressive neurodegeneration. Finally, we summarize the current therapeutic approaches targeting OPCs in AD. Strategies to revitalize OPC senescence, modulate signaling pathways to enhance OPC differentiation, and explore other potential therapeutic avenues are promising in alleviating the impact of AD on OPCs and CNS function. In conclusion, this review highlights the indispensable role of OPCs in CNS function and their involvement in the pathogenesis of AD. The intricate interplay between OPCs and the AD brain microenvironment underscores the complexity of neurodegenerative diseases. Insights from studying OPCs under pathological conditions provide a foundation for innovative therapeutic strategies targeting OPCs and fostering neurodegeneration. Future research will advance our understanding and management of neurodegenerative diseases, ultimately offering hope for effective treatments and improved quality of life for those affected by AD and related disorders.</p>","PeriodicalId":23269,"journal":{"name":"Translational Neurodegeneration","volume":"12 1","pages":"52"},"PeriodicalIF":12.6,"publicationDate":"2023-11-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10644503/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"107592281","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A novel transgenic mouse line with hippocampus-dominant and inducible expression of truncated human tau. 一种新的转基因小鼠系,具有截短的人tau的海马显性和诱导表达。
IF 12.6 1区 医学
Translational Neurodegeneration Pub Date : 2023-11-10 DOI: 10.1186/s40035-023-00379-5
Yang Gao, Yuying Wang, Huiyang Lei, Zhendong Xu, Shihong Li, Haitao Yu, Jiazhao Xie, Zhentao Zhang, Gongping Liu, Yao Zhang, Jie Zheng, Jian-Zhi Wang
{"title":"A novel transgenic mouse line with hippocampus-dominant and inducible expression of truncated human tau.","authors":"Yang Gao, Yuying Wang, Huiyang Lei, Zhendong Xu, Shihong Li, Haitao Yu, Jiazhao Xie, Zhentao Zhang, Gongping Liu, Yao Zhang, Jie Zheng, Jian-Zhi Wang","doi":"10.1186/s40035-023-00379-5","DOIUrl":"10.1186/s40035-023-00379-5","url":null,"abstract":"<p><strong>Background: </strong>Intraneuronal accumulation of hyperphosphorylated tau is a defining hallmark of Alzheimer's disease (AD). However, mouse models imitating AD-exclusive neuronal tau pathologies are lacking.</p><p><strong>Methods: </strong>We generated a new tet-on transgenic mouse model expressing truncated human tau N1-368 (termed hTau368), a tau fragment increased in the brains of AD patients and aged mouse brains. Doxycycline (dox) was administered in drinking water to induce hTau368 expression. Immunostaining and Western blotting were performed to measure the tau level. RNA sequencing was performed to evaluate gene expression, and several behavioral tests were conducted to evaluate mouse cognitive functions, emotion and locomotion.</p><p><strong>Results: </strong>Dox treatment for 1-2 months at a young age induced overt and reversible human tau accumulation in the brains of hTau368 transgenic mice, predominantly in the hippocampus. Meanwhile, the transgenic mice exhibited AD-like high level of tau phosphorylation, glial activation, loss of mature neurons, impaired hippocampal neurogenesis, synaptic degeneration and cognitive deficits.</p><p><strong>Conclusions: </strong>This study developed a well-characterized and easy-to-use tool for the investigations and drug development for AD and other tauopathies.</p>","PeriodicalId":23269,"journal":{"name":"Translational Neurodegeneration","volume":"12 1","pages":"51"},"PeriodicalIF":12.6,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10637005/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72210935","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Intranasal administration of induced pluripotent stem cell-derived cortical neural stem cell-secretome as a treatment option for Alzheimer's disease. 鼻内给药诱导多能干细胞衍生的皮层神经干细胞分泌组作为阿尔茨海默病的治疗选择。
IF 12.6 1区 医学
Translational Neurodegeneration Pub Date : 2023-11-09 DOI: 10.1186/s40035-023-00384-8
Hyunkyung Mo, Juryun Kim, Jennifer Yejean Kim, Jang Woon Kim, Heeju Han, Si Hwa Choi, Yeri Alice Rim, Ji Hyeon Ju
{"title":"Intranasal administration of induced pluripotent stem cell-derived cortical neural stem cell-secretome as a treatment option for Alzheimer's disease.","authors":"Hyunkyung Mo, Juryun Kim, Jennifer Yejean Kim, Jang Woon Kim, Heeju Han, Si Hwa Choi, Yeri Alice Rim, Ji Hyeon Ju","doi":"10.1186/s40035-023-00384-8","DOIUrl":"10.1186/s40035-023-00384-8","url":null,"abstract":"<p><strong>Background: </strong>Alzheimer's disease (AD) is the most common neurodegenerative disorder in the elderly, resulting in gradual destruction of cognitive abilities. Research on the development of various AD treatments is underway; however, no definitive treatment has been developed yet. Herein, we present induced pluripotent stem cell (iPSC)-derived cortical neural stem cell secretome (CNSC-SE) as a new treatment candidate for AD and explore its efficacy.</p><p><strong>Methods: </strong>We first assessed the effects of CNSC-SE treatment on neural maturation and electromagnetic signal during cortical nerve cell differentiation. Then to confirm the efficacy in vivo, CNSC-SE was administered to the 5×FAD mouse model through the nasal cavity (5 μg/g, once a week, 4 weeks). The cell-mediated effects on nerve recovery, amyloid beta (Aβ) plaque aggregation, microglial and astrocyte detection in the brain, and neuroinflammatory responses were investigated. Metabolomics analysis of iPSC-derived CNSC-SE revealed that it contained components that could exert neuro-protective effects or amplify cognitive restorative effects.</p><p><strong>Results: </strong>Human iPSC-derived CNSC-SE increased neuronal proliferation and dendritic structure formation in vitro. Furthermore, CNSC-SE-treated iPSC-derived cortical neurons acquired electrical network activity and action potential bursts. The 5×FAD mice treated with CNSC-SE showed memory restoration and reduced Aβ plaque accumulation.</p><p><strong>Conclusions: </strong>Our findings suggest that the iPSC-derived CNSC-SE may serve as a potential, non-invasive therapeutic option for AD in reducing amyloid infiltration and restoring memory.</p>","PeriodicalId":23269,"journal":{"name":"Translational Neurodegeneration","volume":"12 1","pages":"50"},"PeriodicalIF":12.6,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10634159/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72015542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
NLRP3 inflammasome in cognitive impairment and pharmacological properties of its inhibitors. 认知障碍中的NLRP3炎症小体及其抑制剂的药理学特性。
IF 12.6 1区 医学
Translational Neurodegeneration Pub Date : 2023-11-02 DOI: 10.1186/s40035-023-00381-x
Yi Xu, Yanling Yang, Xi Chen, Danling Jiang, Fei Zhang, Yao Guo, Bin Hu, Guohai Xu, Shengliang Peng, Lidong Wu, Jialing Hu
{"title":"NLRP3 inflammasome in cognitive impairment and pharmacological properties of its inhibitors.","authors":"Yi Xu, Yanling Yang, Xi Chen, Danling Jiang, Fei Zhang, Yao Guo, Bin Hu, Guohai Xu, Shengliang Peng, Lidong Wu, Jialing Hu","doi":"10.1186/s40035-023-00381-x","DOIUrl":"10.1186/s40035-023-00381-x","url":null,"abstract":"<p><p>Cognitive impairment is a multifactorial and multi-step pathological process that places a heavy burden on patients and the society. Neuroinflammation is one of the main factors leading to cognitive impairment. The inflammasomes are multi-protein complexes that respond to various microorganisms and endogenous danger signals, helping to initiate innate protective responses in inflammatory diseases. NLRP3 inflammasomes produce proinflammatory cytokines (interleukin IL-1β and IL-18) by activating caspase-1. In this review, we comprehensively describe the structure and functions of the NLRP3 inflammasome. We also explore the intrinsic relationship between the NLRP3 inflammasome and cognitive impairment, which involves immune cell activation, cell apoptosis, oxidative stress, mitochondrial autophagy, and neuroinflammation. Finally, we describe NLRP3 inflammasome antagonists as targeted therapies to improve cognitive impairment.</p>","PeriodicalId":23269,"journal":{"name":"Translational Neurodegeneration","volume":"12 1","pages":"49"},"PeriodicalIF":12.6,"publicationDate":"2023-11-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10621314/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71427161","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Metabolic regulation of microglial phagocytosis: Implications for Alzheimer's disease therapeutics. 小胶质细胞吞噬作用的代谢调节:对阿尔茨海默病治疗的启示。
IF 12.6 1区 医学
Translational Neurodegeneration Pub Date : 2023-10-31 DOI: 10.1186/s40035-023-00382-w
Izabela Lepiarz-Raba, Ismail Gbadamosi, Roberta Florea, Rosa Chiara Paolicelli, Ali Jawaid
{"title":"Metabolic regulation of microglial phagocytosis: Implications for Alzheimer's disease therapeutics.","authors":"Izabela Lepiarz-Raba, Ismail Gbadamosi, Roberta Florea, Rosa Chiara Paolicelli, Ali Jawaid","doi":"10.1186/s40035-023-00382-w","DOIUrl":"10.1186/s40035-023-00382-w","url":null,"abstract":"<p><p>Microglia, the resident immune cells of the brain, are increasingly implicated in the regulation of brain health and disease. Microglia perform multiple functions in the central nervous system, including surveillance, phagocytosis and release of a variety of soluble factors. Importantly, a majority of their functions are closely related to changes in their metabolism. This natural inter-dependency between core microglial properties and metabolism offers a unique opportunity to modulate microglial activities via nutritional or metabolic interventions. In this review, we examine the existing scientific literature to synthesize the hypothesis that microglial phagocytosis of amyloid beta (Aβ) aggregates in Alzheimer's disease (AD) can be selectively enhanced via metabolic interventions. We first review the basics of microglial metabolism and the effects of common metabolites, such as glucose, lipids, ketone bodies, glutamine, pyruvate and lactate, on microglial inflammatory and phagocytic properties. Next, we examine the evidence for dysregulation of microglial metabolism in AD. This is followed by a review of in vivo studies on metabolic manipulation of microglial functions to ascertain their therapeutic potential in AD. Finally, we discuss the effects of metabolic factors on microglial phagocytosis of healthy synapses, a pathological process that also contributes to the progression of AD. We conclude by enlisting the current challenges that need to be addressed before strategies to harness microglial phagocytosis to clear pathological protein deposits in AD and other neurodegenerative disorders can be widely adopted.</p>","PeriodicalId":23269,"journal":{"name":"Translational Neurodegeneration","volume":"12 1","pages":"48"},"PeriodicalIF":12.6,"publicationDate":"2023-10-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10617244/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"71427160","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Janus kinase inhibitors are potential therapeutics for amyotrophic lateral sclerosis. Janus激酶抑制剂是肌萎缩侧索硬化症的潜在治疗方法。
IF 10.8 1区 医学
Translational Neurodegeneration Pub Date : 2023-10-12 DOI: 10.1186/s40035-023-00380-y
Peter J Richardson, Daniel P Smith, Alex de Giorgio, Xenia Snetkov, Joshua Almond-Thynne, Sara Cronin, Richard J Mead, Christopher J McDermott, Pamela J Shaw
{"title":"Janus kinase inhibitors are potential therapeutics for amyotrophic lateral sclerosis.","authors":"Peter J Richardson, Daniel P Smith, Alex de Giorgio, Xenia Snetkov, Joshua Almond-Thynne, Sara Cronin, Richard J Mead, Christopher J McDermott, Pamela J Shaw","doi":"10.1186/s40035-023-00380-y","DOIUrl":"10.1186/s40035-023-00380-y","url":null,"abstract":"<p><p>Amyotrophic lateral sclerosis (ALS) is a poorly treated multifactorial neurodegenerative disease associated with multiple cell types and subcellular organelles. As with other multifactorial diseases, it is likely that drugs will need to target multiple disease processes and cell types to be effective. We review here the role of Janus kinase (JAK)/Signal transducer and activator of transcription (STAT) signalling in ALS, confirm the association of this signalling with fundamental ALS disease processes using the BenevolentAI Knowledge Graph, and demonstrate that inhibitors of this pathway could reduce the ALS pathophysiology in neurons, glia, muscle fibres, and blood cells. Specifically, we suggest that inhibition of the JAK enzymes by approved inhibitors known as Jakinibs could reduce STAT3 activation and modify the progress of this disease. Analysis of the Jakinibs highlights baricitinib as a suitable candidate due to its ability to penetrate the central nervous system and exert beneficial effects on the immune system. Therefore, we recommend that this drug be tested in appropriately designed clinical trials for ALS.</p>","PeriodicalId":23269,"journal":{"name":"Translational Neurodegeneration","volume":"12 1","pages":"47"},"PeriodicalIF":10.8,"publicationDate":"2023-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10568794/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41213960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":1,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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