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Sun Z, Wen P, Yang D, Li J, Li Z, Zhao M, Wang D, Gou F, Wang J, Fan Q, Dai Y, Ji Y, Li X, Tu Y, Ma T, Wang X, Zhao D, Yang L. Idebenone improves mitochondrial respiratory activity and attenuates oxidative damage via the SIRT3-SOD2 pathway in a prion disease cell model. Life Sci 2025; 366-367:123481. [PMID: 39983818 DOI: 10.1016/j.lfs.2025.123481] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2024] [Revised: 01/26/2025] [Accepted: 02/16/2025] [Indexed: 02/23/2025]
Abstract
Prion diseases are neurodegenerative diseases that are transmitted between humans and animals, which cause spongiform brain degeneration and neuronal death. Prion diseases are difficult to treat. Mitochondrial damage and oxidative stress occurring early in disease progression. Reducing oxidative stress is a therapeutic strategy for disease. Idebenone (IDE) is an antioxidant that enhances electron transfer in the mitochondrial respiratory chain. To investigate IDE protection mechanisms in prion neuron models, we examined IDE effects on apoptosis, mitochondrial dysfunction, cellular respiratory chain damage, and oxidative stress in N2a cells treated with the prion toxic peptide PrP106-126. IDE effectively alleviated apoptosis and mitochondrial dysfunction, reduced mitochondrial reactive oxygen species (ROS), attenuated lipid peroxidation, improved glutathione percentages, increased important antioxidant enzyme (superoxide dismutase (SOD) and catalase) activities, and elevated mitochondrial DNA levels. IDE also modulated SOD2 deacetylation and oxidative damage by regulating SIRT3. Overall, IDE exerted significant antioxidant effects in our prion disease cell model and may have therapeutic applications for prion disease.
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Affiliation(s)
- Zhixin Sun
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Pei Wen
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Dongming Yang
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jie Li
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Zhiping Li
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Mengyang Zhao
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Dongdong Wang
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Fengting Gou
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Jingjing Wang
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Qing Fan
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yuexin Dai
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yilan Ji
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xueyuan Li
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Yingxin Tu
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Tianying Ma
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Xiaoyu Wang
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Deming Zhao
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China
| | - Lifeng Yang
- National Key Laboratory of Veterinary Public Health and Safety, Key Laboratory of Animal Epidemiology of the Ministry of Agriculture and Rural Affairs, National Animal Transmissible Spongiform Encephalopathy Laboratory, College of Veterinary Medicine, China Agricultural University, Beijing, China.
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Schmitt-Ulms G, Wang X, Watts J, Booth S, Wille H, Zhao W. A unified model for the origins of spongiform degeneration and other neuropathological features in prion diseases. ARXIV 2025:arXiv:2412.16678v2. [PMID: 39876936 PMCID: PMC11774453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 01/31/2025]
Abstract
Decades after their initial observation in prion-infected brain tissues, the identities of virus-like dense particles, varicose tubules, and oval bodies containing parallel bands and fibrils have remained elusive. Our recent work revealed that a phenotype of dilation of the endoplasmic reticulum (ER), most notable for the perinuclear space (PNS), contributes to spongiform degeneration. To assess the significance of this phenotype for the etiology of prion diseases, we explored whether it can be functionally linked to other neuropathological hallmarks observed in these diseases, as this would indicate it to be a central event. Having surveyed the neuropathological record and other distant literature niches, we propose a model in which pathogenic forms of the prion protein poison raft domains, including essential Na+, K+-ATPases (NKAs) embedded within them, thereby triggering an ER-centered cellular rescue program coordinated by the unfolded protein response (UPR). The execution of this program stalls general protein synthesis, causing the deterioration of synaptic spines. As the disease progresses, cells selectively increase sterol biosynthesis, along with ribosome and ER biogenesis. These adaptive rescue attempts cause morphological changes to the ER which manifest as ER dilation or ER hypertrophy in a manner that is influenced by Ca2+ influx into the cell. The nuclear-to-cytoplasmic transport of mRNAs and tRNAs interrupts in late stage disease, thereby depriving ribosomes of supplies and inducing them to aggregate into a paracrystalline form. In support of this model, we share previously reported data, whose features are consistent with the interpretation that 1) the phenotype of ER dilation is observed in major prion diseases, 2) varicose tubules and oval bodies represent ER hypertrophy, and 3) virus-like dense particles are paracrystalline aggregates of inactive ribosomes.
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Affiliation(s)
- Gerold Schmitt-Ulms
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Canada
| | - Xinzhu Wang
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Canada
| | - Joel Watts
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
- Department of Biochemistry, University of Toronto, Toronto, Canada
| | - Stephanie Booth
- Department of Medical Microbiology and Infectious Diseases, University of Manitoba, Winnipeg, Canada
| | - Holger Wille
- Department of Biochemistry, University of Alberta, Edmonton, Canada
- Centre for Prions and Protein Folding Diseases, University of Edmonton, Edmonton, Canada
| | - Wenda Zhao
- Tanz Centre for Research in Neurodegenerative Diseases, University of Toronto, Toronto, Canada
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, Canada
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Lavigna G, Grasso A, Pasini C, Grande V, Mignogna L, Restelli E, Masone A, Fracasso C, Lucchetti J, Gobbi M, Chiesa R. Trazodone, dibenzoylmethane and tauroursodeoxycholic acid do not prevent motor dysfunction and neurodegeneration in Marinesco-Sjögren syndrome mice. PLoS One 2025; 20:e0317404. [PMID: 39804912 PMCID: PMC11729928 DOI: 10.1371/journal.pone.0317404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2024] [Accepted: 12/27/2024] [Indexed: 01/30/2025] Open
Abstract
There is no cure for Marinesco-Sjögren syndrome (MSS), a genetic multisystem disease linked to loss-of-function mutations in the SIL1 gene, encoding a BiP co-chaperone. Previously, we showed that the PERK kinase inhibitor GSK2606414 delays cerebellar Purkinje cell (PC) degeneration and the onset of ataxia in the woozy mouse model of MSS. However, GSK2606414 is toxic to the pancreas and does not completely rescue the woozy phenotype. The present study tested trazodone and dibenzoylmethane (DBM), which partially inhibit PERK signaling with neuroprotective effects and no pancreatic toxicity. We also tested the chemical chaperone tauroursodeoxycholic acid (TUDCA), which protects MSS patients' cells from stress-induced apoptosis. Mice were chronically treated for five weeks, starting from a presymptomatic stage. Trazodone was given 40 mg/kg daily by intraperitoneal (ip) injection. DBM was given 0.5% in the diet ad libitum. TUDCA was given either 0.4% in the diet, or 500 mg/kg ip every three days. None of the treatments prevented motor dysfunction or PC degeneration in woozy mice, as assessed by beam walking, rotarod test, and calbindin immunohistochemistry. Only trazodone slightly boosted beam walking performance, but this effect was not related to inhibition of PERK signaling. Pharmacokinetic studies excluded that the lack of effect was due to altered drug metabolism in woozy mice. These results indicate that trazodone, DBM and TUDCA, at dosing regimens active in other neurodegenerative disease mouse models, have no disease-modifying effect in a preclinical model of MSS. This underscores the difficulty of translating neuroprotective strategies from other conditions to MSS, highlighting the need for more targeted therapeutic approaches.
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Affiliation(s)
- Giada Lavigna
- Department of Neuroscience, Laboratory of Prion Neurobiology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Anna Grasso
- Department of Neuroscience, Laboratory of Prion Neurobiology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Chiara Pasini
- Department of Neuroscience, Laboratory of Prion Neurobiology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Valentina Grande
- Department of Neuroscience, Laboratory of Prion Neurobiology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Laura Mignogna
- Department of Neuroscience, Laboratory of Prion Neurobiology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Elena Restelli
- Department of Neuroscience, Laboratory of Prion Neurobiology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Antonio Masone
- Department of Neuroscience, Laboratory of Prion Neurobiology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Claudia Fracasso
- Department of Molecular Biochemistry and Pharmacology, Laboratory of Pharmacodynamics and Pharmacokinetics, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Jacopo Lucchetti
- Department of Molecular Biochemistry and Pharmacology, Laboratory of Pharmacodynamics and Pharmacokinetics, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Marco Gobbi
- Department of Molecular Biochemistry and Pharmacology, Laboratory of Pharmacodynamics and Pharmacokinetics, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Roberto Chiesa
- Department of Neuroscience, Laboratory of Prion Neurobiology, Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
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Alvarez-Pardo R, Doron-Mandel E, Albert-Gascó H, Salinas CO, Jovanovic M, Alvarez-Castelao B. Cell-Type-Specific Protein Metabolic Labeling and Identification Using the Methionine Subrogate ANL in Cells Expressing a Mutant Methionyl-tRNA Synthetase. Methods Mol Biol 2025; 2899:111-126. [PMID: 40067620 DOI: 10.1007/978-1-0716-4386-0_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2025]
Abstract
The study of protein homeostasis in vivo is crucial for our understanding of the functions of cells and organisms. However, complex organisms, such as mammals, are built from heterogeneous tissues and cell-types. These cell-types are often specialized and react in different ways to the same physiological or pathological stimulus. Therefore, a major challenge in proteomics is the identification of proteomes and their behavior in a cell-type-specific manner. In this protocol, we describe a technique to label, enrich, and identify proteins from specific cell types. This technique is based on the expression of a mutant methionyl-tRNA synthetase (MetRS*) for incorporation of a bioorthogonal analog of methionine (ANL) into proteins. ANL can be subsequently bound to an alkyne by click-chemistry, which is used as a bait for protein purification followed by mass spectrometry identification.
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Affiliation(s)
- Rodrigo Alvarez-Pardo
- Department of Biochemistry and Molecular Biology, Veterinary School, Complutense University of Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, IdISSC, Madrid, Spain
| | - Ella Doron-Mandel
- Department of Biological Sciences, Columbia University, New York, NY, USA
| | | | - Cristina Olmedo Salinas
- Department of Biochemistry and Molecular Biology, Veterinary School, Complutense University of Madrid, Madrid, Spain
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, IdISSC, Madrid, Spain
| | - Marko Jovanovic
- Department of Biological Sciences, Columbia University, New York, NY, USA
| | - Beatriz Alvarez-Castelao
- Department of Biochemistry and Molecular Biology, Veterinary School, Complutense University of Madrid, Madrid, Spain.
- Instituto de Investigación Sanitaria del Hospital Clínico San Carlos, IdISSC, Madrid, Spain.
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Lockshin ER, Calakos N. The integrated stress response in brain diseases: A double-edged sword for proteostasis and synapses. Curr Opin Neurobiol 2024; 87:102886. [PMID: 38901329 PMCID: PMC11646490 DOI: 10.1016/j.conb.2024.102886] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2024] [Revised: 05/22/2024] [Accepted: 05/24/2024] [Indexed: 06/22/2024]
Abstract
The integrated stress response (ISR) is a highly conserved biochemical pathway that regulates protein synthesis. The ISR is activated in response to diverse stressors to restore cellular homeostasis. As such, the ISR is implicated in a wide range of diseases, including brain disorders. However, in the brain, the ISR also has potent influence on processes beyond proteostasis, namely synaptic plasticity, learning and memory. Thus, in the setting of brain diseases, ISR activity may have dual effects on proteostasis and synaptic function. In this review, we consider the ISR's contribution to brain disorders through the lens of its potential effects on synaptic plasticity. From these examples, we illustrate that at times ISR activity may be a "double-edged sword". We also highlight its potential as a therapeutic target to improve circuit function in brain diseases independent of its role in disease pathogenesis.
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Affiliation(s)
- Elana R Lockshin
- Department of Neurobiology, Duke University Medical Center, Durham, NC 27710, USA; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA
| | - Nicole Calakos
- Department of Neurobiology, Duke University Medical Center, Durham, NC 27710, USA; Aligning Science Across Parkinson's (ASAP) Collaborative Research Network, Chevy Chase, MD 20815, USA; Department of Neurology, Duke University Medical Center, Durham, NC 27710, USA; Department of Cell Biology, Duke University Medical Center, Durham, NC 27710, USA.
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Ribeiro FC, Cozachenco D, Argyrousi EK, Staniszewski A, Wiebe S, Calixtro JD, Soares‐Neto R, Al‐Chami A, Sayegh FE, Bermudez S, Arsenault E, Cossenza M, Lacaille J, Nader K, Sun H, De Felice FG, Lourenco MV, Arancio O, Aguilar‐Valles A, Sonenberg N, Ferreira ST. The ketamine metabolite (2R,6R)-hydroxynorketamine rescues hippocampal mRNA translation, synaptic plasticity and memory in mouse models of Alzheimer's disease. Alzheimers Dement 2024; 20:5398-5410. [PMID: 38934107 PMCID: PMC11350050 DOI: 10.1002/alz.14034] [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: 12/02/2023] [Revised: 04/16/2024] [Accepted: 05/06/2024] [Indexed: 06/28/2024]
Abstract
INTRODUCTION Impaired brain protein synthesis, synaptic plasticity, and memory are major hallmarks of Alzheimer's disease (AD). The ketamine metabolite (2R,6R)-hydroxynorketamine (HNK) has been shown to modulate protein synthesis, but its effects on memory in AD models remain elusive. METHODS We investigated the effects of HNK on hippocampal protein synthesis, long-term potentiation (LTP), and memory in AD mouse models. RESULTS HNK activated extracellular signal-regulated kinase 1/2 (ERK1/2), mechanistic target of rapamycin (mTOR), and p70S6 kinase 1 (S6K1)/ribosomal protein S6 signaling pathways. Treatment with HNK rescued hippocampal LTP and memory deficits in amyloid-β oligomers (AβO)-infused mice in an ERK1/2-dependent manner. Treatment with HNK further corrected aberrant transcription, LTP and memory in aged APP/PS1 mice. DISCUSSION Our findings demonstrate that HNK induces signaling and transcriptional responses that correct synaptic and memory deficits in AD mice. These results raise the prospect that HNK could serve as a therapeutic approach in AD. HIGHLIGHTS The ketamine metabolite HNK activates hippocampal ERK/mTOR/S6 signaling pathways. HNK corrects hippocampal synaptic and memory defects in two mouse models of AD. Rescue of synaptic and memory impairments by HNK depends on ERK signaling. HNK corrects aberrant transcriptional signatures in APP/PS1 mice.
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Affiliation(s)
- Felipe C. Ribeiro
- Institute of Medical Biochemistry Leopoldo de MeisFederal University of Rio de JaneiroRio de JaneiroRio de JaneiroBrazil
| | - Danielle Cozachenco
- Institute of Medical Biochemistry Leopoldo de MeisFederal University of Rio de JaneiroRio de JaneiroRio de JaneiroBrazil
| | - Elentina K. Argyrousi
- Taub Institute for Research on Alzheimer's Disease and the Aging BrainColumbia UniversityNew YorkNew YorkUSA
| | - Agnieszka Staniszewski
- Taub Institute for Research on Alzheimer's Disease and the Aging BrainColumbia UniversityNew YorkNew YorkUSA
| | - Shane Wiebe
- Department of BiochemistryMcGill UniversityMontrealQuebecCanada
| | - Joao D. Calixtro
- Institute of Medical Biochemistry Leopoldo de MeisFederal University of Rio de JaneiroRio de JaneiroRio de JaneiroBrazil
| | - Rubens Soares‐Neto
- Institute of Medical Biochemistry Leopoldo de MeisFederal University of Rio de JaneiroRio de JaneiroRio de JaneiroBrazil
| | - Aycheh Al‐Chami
- Department of NeuroscienceCarleton UniversityOttawaOntarioCanada
| | - Fatema El Sayegh
- Department of NeuroscienceCarleton UniversityOttawaOntarioCanada
| | - Sara Bermudez
- Department of BiochemistryMcGill UniversityMontrealQuebecCanada
| | - Emily Arsenault
- Department of NeuroscienceCarleton UniversityOttawaOntarioCanada
| | - Marcelo Cossenza
- Department of Physiology and Pharmacology, Fluminense Federal UniversityBiomedical InstituteNiteróiRio de JaneiroBrazil
| | - Jean‐Claude Lacaille
- Department of Neurosciences, Université de MontréalCentre for Interdisciplinary Research on Brain and Learning and Research Group on Neural Signaling and CircuitsMontrealQuebecCanada
| | - Karim Nader
- Department of PsychologyMcGill UniversityMontrealQuebecCanada
| | - Hongyu Sun
- Department of NeuroscienceCarleton UniversityOttawaOntarioCanada
| | - Fernanda G. De Felice
- Institute of Medical Biochemistry Leopoldo de MeisFederal University of Rio de JaneiroRio de JaneiroRio de JaneiroBrazil
- Department of Biomedical and Molecular Sciences, Centre for Neuroscience StudiesQueen's UniversityKingstonOntarioCanada
- Department of PsychiatryQueen's UniversityKingstonOntarioCanada
- D'Or Institute for Research and EducationRio de JaneiroRio de JaneiroBrazil
| | - Mychael V. Lourenco
- Institute of Medical Biochemistry Leopoldo de MeisFederal University of Rio de JaneiroRio de JaneiroRio de JaneiroBrazil
| | - Ottavio Arancio
- Taub Institute for Research on Alzheimer's Disease and the Aging BrainColumbia UniversityNew YorkNew YorkUSA
| | | | - Nahum Sonenberg
- Department of BiochemistryMcGill UniversityMontrealQuebecCanada
| | - Sergio T. Ferreira
- Institute of Medical Biochemistry Leopoldo de MeisFederal University of Rio de JaneiroRio de JaneiroRio de JaneiroBrazil
- D'Or Institute for Research and EducationRio de JaneiroRio de JaneiroBrazil
- Institute of Biophysics Carlos Chagas FilhoFederal University of Rio de JaneiroRio de JaneiroRio de JaneiroBrazil
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Nair KA, Liu B. Navigating the landscape of the unfolded protein response in CD8 + T cells. Front Immunol 2024; 15:1427859. [PMID: 39026685 PMCID: PMC11254671 DOI: 10.3389/fimmu.2024.1427859] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Accepted: 06/24/2024] [Indexed: 07/20/2024] Open
Abstract
Endoplasmic reticulum stress occurs due to large amounts of misfolded proteins, hypoxia, nutrient deprivation, and more. The unfolded protein is a complex intracellular signaling network designed to operate under this stress. Composed of three individual arms, inositol-requiring enzyme 1, protein kinase RNA-like ER kinase, and activating transcription factor-6, the unfolded protein response looks to resolve stress and return to proteostasis. The CD8+ T cell is a critical cell type for the adaptive immune system. The unfolded protein response has been shown to have a wide-ranging spectrum of effects on CD8+ T cells. CD8+ T cells undergo cellular stress during activation and due to environmental insults. However, the magnitude of the effects this response has on CD8+ T cells is still understudied. Thus, studying these pathways is important to unraveling the inner machinations of these powerful cells. In this review, we will highlight the recent literature in this field, summarize the three pathways of the unfolded protein response, and discuss their roles in CD8+ T cell biology and functionality.
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Affiliation(s)
- Keith Alan Nair
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, United States
- The Pelotonia Institute for Immuno-Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH, United States
| | - Bei Liu
- Division of Hematology, Department of Internal Medicine, The Ohio State University Comprehensive Cancer Center, Columbus, OH, United States
- The Pelotonia Institute for Immuno-Oncology, The Ohio State University Comprehensive Cancer Center, Columbus, OH, United States
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8
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Bizingre C, Bianchi C, Baudry A, Alleaume-Butaux A, Schneider B, Pietri M. Post-translational modifications in prion diseases. Front Mol Neurosci 2024; 17:1405415. [PMID: 39011540 PMCID: PMC11247024 DOI: 10.3389/fnmol.2024.1405415] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2024] [Accepted: 06/14/2024] [Indexed: 07/17/2024] Open
Abstract
More than 650 reversible and irreversible post-translational modifications (PTMs) of proteins have been listed so far. Canonical PTMs of proteins consist of the covalent addition of functional or chemical groups on target backbone amino-acids or the cleavage of the protein itself, giving rise to modified proteins with specific properties in terms of stability, solubility, cell distribution, activity, or interactions with other biomolecules. PTMs of protein contribute to cell homeostatic processes, enabling basal cell functions, allowing the cell to respond and adapt to variations of its environment, and globally maintaining the constancy of the milieu interieur (the body's inner environment) to sustain human health. Abnormal protein PTMs are, however, associated with several disease states, such as cancers, metabolic disorders, or neurodegenerative diseases. Abnormal PTMs alter the functional properties of the protein or even cause a loss of protein function. One example of dramatic PTMs concerns the cellular prion protein (PrPC), a GPI-anchored signaling molecule at the plasma membrane, whose irreversible post-translational conformational conversion (PTCC) into pathogenic prions (PrPSc) provokes neurodegeneration. PrPC PTCC into PrPSc is an additional type of PTM that affects the tridimensional structure and physiological function of PrPC and generates a protein conformer with neurotoxic properties. PrPC PTCC into PrPSc in neurons is the first step of a deleterious sequence of events at the root of a group of neurodegenerative disorders affecting both humans (Creutzfeldt-Jakob diseases for the most representative diseases) and animals (scrapie in sheep, bovine spongiform encephalopathy in cow, and chronic wasting disease in elk and deer). There are currently no therapies to block PrPC PTCC into PrPSc and stop neurodegeneration in prion diseases. Here, we review known PrPC PTMs that influence PrPC conversion into PrPSc. We summarized how PrPC PTCC into PrPSc impacts the PrPC interactome at the plasma membrane and the downstream intracellular controlled protein effectors, whose abnormal activation or trafficking caused by altered PTMs promotes neurodegeneration. We discussed these effectors as candidate drug targets for prion diseases and possibly other neurodegenerative diseases.
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Affiliation(s)
- Chloé Bizingre
- INSERM UMR-S 1124, Paris, France
- Université Paris Cité, UMR-S 1124, Paris, France
| | - Clara Bianchi
- INSERM UMR-S 1124, Paris, France
- Université Paris Cité, UMR-S 1124, Paris, France
| | - Anne Baudry
- INSERM UMR-S 1124, Paris, France
- Université Paris Cité, UMR-S 1124, Paris, France
| | | | - Benoit Schneider
- INSERM UMR-S 1124, Paris, France
- Université Paris Cité, UMR-S 1124, Paris, France
- Ecole polytechnique, Institut Polytechnique de Paris, CNRS UMR7654, Palaiseau, France
| | - Mathéa Pietri
- INSERM UMR-S 1124, Paris, France
- Université Paris Cité, UMR-S 1124, Paris, France
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9
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Yang J, Huang J, Pan Z, Wang X. Therapeutic potential of trazodone in trigeminal neuralgia based on inflammation and oxidative stress: an in vitro experimental study. J Oral Facial Pain Headache 2024; 38:119-125. [PMID: 39801102 PMCID: PMC11810673 DOI: 10.22514/jofph.2024.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2024] [Accepted: 05/20/2024] [Indexed: 02/16/2025]
Abstract
Trigeminal neuralgia (TN) is a debilitating condition affecting the patients' life quality. New therapeutic approaches and novel drugs are required to treat TN. Trazodone being a serotonin antagonist and reuptake inhibitor (SARI) provides neuroprotection, however its role and underlying mechanism in TN in vitro or in vivo are not clear. This study was aimed to investigate the trazodone impact on glial BV-2 cells regarding TN. It was found that trazodone inhibited the BV-2 cells growth and suppressed the inflammation and oxidative stress in Lipopolysaccharide (LPS)-treated BV-2 cells. Trazodone treatment specifically decreased the levels of Tumor Necrosis Factor-alpha (TNF-α), Interleukin-6 (IL-6), Interleukin-1 beta (IL-1β) (p < 0.05), and Reactive Oxygen Species (ROS) (p < 0.01). Moreover, trazodone suppressed the Mitogen-Activated Protein Kinase (MAPK) pathway in LPS-treated BV-2 cells. These outcomes demonstrate that trazodone suppressed glial cell hyperproliferation, inflammation, and oxidative stress through MAPK pathway activation.
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Affiliation(s)
- Jun Yang
- Department of Geriatrics, The First
Affiliated Hospital of Zhejiang Chinese
Medical University (Zhejiang Provincial
Hospital of Chinese Medicine), 310003
Hangzhou, Zhejiang, China
| | - Junling Huang
- Department of Geriatrics, Tongji
Hospital, School of Medicine Tongji
University, 200065 Shanghai, China
| | - Zhimin Pan
- Department of Geriatrics, The First
Affiliated Hospital of Zhejiang Chinese
Medical University (Zhejiang Provincial
Hospital of Chinese Medicine), 310003
Hangzhou, Zhejiang, China
| | - Xiao Wang
- Department of Geriatrics, The First
Affiliated Hospital of Zhejiang Chinese
Medical University (Zhejiang Provincial
Hospital of Chinese Medicine), 310003
Hangzhou, Zhejiang, China
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Mallucci G. Dementia therapy: time for an energy boost. Brain 2024; 147:1593-1594. [PMID: 38669206 DOI: 10.1093/brain/awae120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/28/2024] Open
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