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Yang L, Lin W, Yan X, Zhang Z. Comparative effects of lifelong moderate-intensity continuous training and high-intensity interval training on blood lipid levels and mental well-being in naturally ageing mice. Exp Gerontol 2024; 194:112519. [PMID: 38992822 DOI: 10.1016/j.exger.2024.112519] [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: 05/02/2024] [Revised: 06/29/2024] [Accepted: 07/08/2024] [Indexed: 07/13/2024]
Abstract
OBJECTIVE This study aimed to investigate the impact of lifelong exercise, including both moderate-intensity continuous training and high-intensity interval training, on blood lipid levels and mental behaviour in naturally ageing mice to identify effective exercise strategies for ageing-related health issues. METHODS Six-week-old male BALB/c mice were randomly assigned to one of four groups: young control (YC), natural ageing control (OC), lifelong moderate-intensity continuous exercise (EM), and lifelong high-intensity interval exercise (EH) groups. The EM group was trained at a speed corresponding to 70 % of the maximum running speed, while the EH group was trained at a running speed alternating between 50 % of the maximum running speed, 70 % of the maximum running speed, and 90 % of the maximum running speed. All exercise sessions were conducted three times per week, with each session lasting 50 min. Behavioural tests and blood sample collection were conducted at 72 weeks of age. RESULTS Ageing in mice led to changes in muscle and fat mass. Both the EM and EH groups showed greater muscle mass and lower fat mass than did the OC group. Ageing was associated with elevated anxiety (fewer open arm entries, time spent in the central region) and depression (lower sucrose preference) indicators. However, these changes were reversed in both exercise groups, with no differences between the two exercise groups. Blood lipid levels, including total cholesterol (TC), total triglycerides (TGs), low-density lipoprotein (LDL), and free fatty acid (FFA) levels, were greater in the OC group than in the YC group. Additionally, the OC group exhibited lower high-density lipoprotein (HDL) levels. However, both the EM and EH groups exhibited improved lipid profiles compared to those of the YC group. CONCLUSION Lifelong exercise, whether moderate-intensity continuous or high-intensity interval training, can preserve body health during ageing, prevent anxiety and depression, and maintain stable blood lipid levels. Both exercise types are equally effective, suggesting that exercise intensity may not be the critical factor underlying these beneficial adaptations.
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Affiliation(s)
- Ling Yang
- School of Physical Education, Shaoguan University, Shaoguan 512000, Guangdong, China; Institute for Health and Sport, Victoria University, Melbourne, VIC 8001, Australia
| | - Wentao Lin
- School of Physical Education and Health, Zhuhai College of Science and Technology, Zhuhai 519090, Guangdong, China
| | - Xu Yan
- Institute for Health and Sport, Victoria University, Melbourne, VIC 8001, Australia
| | - Zhishang Zhang
- Department of Physical Education, Guangdong Medical University, Dongguan 523808, Guangdong, China.
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Moreira-Pais A, Vitorino R, Sousa-Mendes C, Neuparth MJ, Nuccio A, Luparello C, Attanzio A, Novák P, Loginov D, Nogueira-Ferreira R, Leite-Moreira A, Oliveira PA, Ferreira R, Duarte JA. Mitochondrial remodeling underlying age-induced skeletal muscle wasting: let's talk about sex. Free Radic Biol Med 2024; 218:68-81. [PMID: 38574975 DOI: 10.1016/j.freeradbiomed.2024.04.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/31/2024] [Accepted: 04/01/2024] [Indexed: 04/06/2024]
Abstract
Sarcopenia is associated with reduced quality of life and premature mortality. The sex disparities in the processes underlying sarcopenia pathogenesis, which include mitochondrial dysfunction, are ill-understood and can be decisive for the optimization of sarcopenia-related interventions. To improve the knowledge regarding the sex differences in skeletal muscle aging, the gastrocnemius muscle of young and old female and male rats was analyzed with a focus on mitochondrial remodeling through the proteome profiling of mitochondria-enriched fractions. To the best of our knowledge, this is the first study analyzing sex differences in skeletal muscle mitochondrial proteome remodeling. Data demonstrated that age induced skeletal muscle atrophy and fibrosis in both sexes. In females, however, this adverse skeletal muscle remodeling was more accentuated than in males and might be attributed to an age-related reduction of 17beta-estradiol signaling through its estrogen receptor alpha located in mitochondria. The females-specific mitochondrial remodeling encompassed increased abundance of proteins involved in fatty acid oxidation, decreased abundance of the complexes subunits, and enhanced proneness to oxidative posttranslational modifications. This conceivable accretion of damaged mitochondria in old females might be ascribed to low levels of Parkin, a key mediator of mitophagy. Despite skeletal muscle atrophy and fibrosis, males maintained their testosterone levels throughout aging, as well as their androgen receptor content, and the age-induced mitochondrial remodeling was limited to increased abundance of pyruvate dehydrogenase E1 component subunit beta and electron transfer flavoprotein subunit beta. Herein, for the first time, it was demonstrated that age affects more severely the skeletal muscle mitochondrial proteome of females, reinforcing the necessity of sex-personalized approaches towards sarcopenia management, and the inevitability of the assessment of mitochondrion-related therapeutics.
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Affiliation(s)
- Alexandra Moreira-Pais
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto (FADEUP) and Laboratory for Integrative and Translational Research in Population Health (ITR), 4200-450, Porto, Portugal; LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal; Centre for Research and Technology of Agro Environmental and Biological Sciences (CITAB), Inov4Agro, University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801, Vila Real, Portugal.
| | - Rui Vitorino
- iBiMED - Institute of Biomedicine, Department of Medical Sciences, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - Cláudia Sousa-Mendes
- Cardiovascular R&D Center - UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine of the University of Porto, 4200-319, Porto, Portugal.
| | - Maria João Neuparth
- Research Center in Physical Activity, Health and Leisure (CIAFEL), Faculty of Sport, University of Porto (FADEUP) and Laboratory for Integrative and Translational Research in Population Health (ITR), 4200-450, Porto, Portugal; UCIBIO - Applied Molecular Biosciences Unit, Translational Toxicology Research Laboratory, University Institute of Health Sciences (1H-TOXRUN, IUCS-CESPU), 4585-116, Gandra, Portugal.
| | - Alessandro Nuccio
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal; Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128, Palermo, Italy.
| | - Claudio Luparello
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128, Palermo, Italy.
| | - Alessandro Attanzio
- Department of Biological, Chemical and Pharmaceutical Sciences and Technologies (STEBICEF), University of Palermo, 90128, Palermo, Italy.
| | - Petr Novák
- Laboratory of Structural Biology and Cell Signalling, Institute of Microbiology of the Czech Academy of Sciences, Prumyslova 595, CZ-252 50, Vestec, Czech Republic.
| | - Dmitry Loginov
- Laboratory of Structural Biology and Cell Signalling, Institute of Microbiology of the Czech Academy of Sciences, Prumyslova 595, CZ-252 50, Vestec, Czech Republic.
| | - Rita Nogueira-Ferreira
- Cardiovascular R&D Center - UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine of the University of Porto, 4200-319, Porto, Portugal.
| | - Adelino Leite-Moreira
- Cardiovascular R&D Center - UnIC@RISE, Department of Surgery and Physiology, Faculty of Medicine of the University of Porto, 4200-319, Porto, Portugal; Department of Cardiothoracic Surgery, Centro Hospitalar Universitário São João, 4200-319, Porto, Portugal.
| | - Paula A Oliveira
- Centre for Research and Technology of Agro Environmental and Biological Sciences (CITAB), Inov4Agro, University of Trás-os-Montes and Alto Douro (UTAD), Quinta de Prados, 5000-801, Vila Real, Portugal.
| | - Rita Ferreira
- LAQV-REQUIMTE, Department of Chemistry, University of Aveiro, 3810-193, Aveiro, Portugal.
| | - José A Duarte
- UCIBIO - Applied Molecular Biosciences Unit, Translational Toxicology Research Laboratory, University Institute of Health Sciences (1H-TOXRUN, IUCS-CESPU), 4585-116, Gandra, Portugal; Associate Laboratory i4HB - Institute for Health and Bioeconomy, University Institute of Health Sciences - CESPU, 4585-116, Gandra, Portugal.
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3
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Zhang S, Guo H, Wang H, Liu X, Wang M, Liu X, Fan Y, Tan K. A novel mitochondrial unfolded protein response-related risk signature to predict prognosis, immunotherapy and sorafenib sensitivity in hepatocellular carcinoma. Apoptosis 2024; 29:768-784. [PMID: 38493408 DOI: 10.1007/s10495-024-01945-6] [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] [Accepted: 02/07/2024] [Indexed: 03/18/2024]
Abstract
Hepatocellular carcinoma (HCC) is a common cause of cancer-associated death worldwide. The mitochondrial unfolded protein response (UPRmt) not only maintains mitochondrial integrity but also regulates cancer progression and drug resistance. However, no study has used the UPRmt to construct a prognostic signature for HCC. This work aimed to establish a novel signature for predicting patient prognosis, immune cell infiltration, immunotherapy, and chemotherapy response based on UPRmt-related genes (MRGs). Transcriptional profiles and clinical information were obtained from the TCGA and ICGC databases. Cox regression and LASSO regression analyses were applied to select prognostic genes and develop a risk model. The TIMER algorithm was used to investigate immunocytic infiltration in the high- and low-risk subgroups. Here, two distinct clusters were identified with different prognoses, immune cell infiltration statuses, drug sensitivities, and response to immunotherapy. A risk score consisting of seven MRGs (HSPD1, LONP1, SSBP1, MRPS5, YME1L1, HDAC1 and HDAC2) was developed to accurately and independently predict the prognosis of HCC patients. Additionally, the expression of core MRGs was confirmed by immunohistochemistry (IHC) staining, single-cell RNA sequencing, and spatial transcriptome analyses. Notably, the expression of prognostic MRGs was significantly correlated with sorafenib sensitivity in HCC and markedly downregulated in sorafenib-treated HepG2 and Huh7 cells. Furthermore, the knockdown of LONP1 decreased the proliferation, invasion, and migration of HepG2 cells, suggesting that upregulated LONP1 expression contributed to the malignant behaviors of HCC cells. To our knowledge, this is the first study to investigate the consensus clustering algorithm, prognostic potential, immune microenvironment infiltration and drug sensitivity based on the expression of MRGs in HCC. In summary, the UPRmt-related classification and prognostic signature could assist in determining the prognosis and personalized therapy of HCC patients from the perspectives of predictive, preventative and personalized medicine.
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MESH Headings
- Humans
- Carcinoma, Hepatocellular/genetics
- Carcinoma, Hepatocellular/drug therapy
- Carcinoma, Hepatocellular/pathology
- Carcinoma, Hepatocellular/metabolism
- Carcinoma, Hepatocellular/immunology
- Carcinoma, Hepatocellular/diagnosis
- Liver Neoplasms/genetics
- Liver Neoplasms/drug therapy
- Liver Neoplasms/metabolism
- Liver Neoplasms/pathology
- Liver Neoplasms/immunology
- Liver Neoplasms/diagnosis
- Unfolded Protein Response/drug effects
- Prognosis
- Sorafenib/pharmacology
- Sorafenib/therapeutic use
- Immunotherapy
- Mitochondria/metabolism
- Mitochondria/drug effects
- Mitochondria/genetics
- Gene Expression Regulation, Neoplastic/drug effects
- Drug Resistance, Neoplasm/genetics
- Male
- Biomarkers, Tumor/genetics
- Biomarkers, Tumor/metabolism
- Antineoplastic Agents/therapeutic use
- Antineoplastic Agents/pharmacology
- Female
- Cell Line, Tumor
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Affiliation(s)
- Sidi Zhang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
| | - Hanyao Guo
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
| | - Hongyu Wang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
| | - Xiaopeng Liu
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
- Department of Neurosurgery, The Second Hospital of Hebei Medical University, Shijiazhuang, China
| | - Meixia Wang
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
| | - Xiaoyu Liu
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
| | - Yumei Fan
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
| | - Ke Tan
- Ministry of Education Key Laboratory of Molecular and Cellular Biology, Hebei Collaborative Innovation Center for Eco-Environment, Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China.
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Xie J, Xiao C, Pan Y, Xue S, Huang M. ER stress-induced transcriptional response reveals tolerance genes in yeast. Biotechnol J 2024; 19:e2400082. [PMID: 38896412 DOI: 10.1002/biot.202400082] [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: 02/12/2024] [Revised: 05/10/2024] [Accepted: 05/11/2024] [Indexed: 06/21/2024]
Abstract
Saccharomyces cerevisiae is important for protein secretion studies, yet the complexities of protein synthesis and secretion under endoplasmic reticulum (ER) stress conditions remain not fully understood. ER stress, triggered by alterations in the ER protein folding environment, poses substantial challenges to cells, especially during heterologous protein production. In this study, we used RNA-seq to analyze the transcriptional responses of yeast strains to ER stress induced by reagents such as tunicamycin (Tm) or dithiothreitol (DTT). Our gene expression analysis revealed several crucial genes, such as HMO1 and BIO5, that are involved in ER-stress tolerance. Through metabolic engineering, the best engineered strain R23 with HMO1 overexpression and BIO5 deletion, showed enhanced ER stress tolerance and improved protein folding efficiency, leading to a 2.14-fold increase in α-amylase production under Tm treatment and a 2.04-fold increase in cell density under DTT treatment. Our findings contribute to the understanding of cellular responses to ER stress and provide a basis for further investigations into the mechanisms of ER stress at the cellular level.
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Affiliation(s)
- Jingrong Xie
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Chufan Xiao
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Yuyang Pan
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Songlyu Xue
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
| | - Mingtao Huang
- School of Food Science and Engineering, South China University of Technology, Guangzhou, China
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5
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Davis GH, Zaya A, Pearce MMP. Impairment of the Glial Phagolysosomal System Drives Prion-Like Propagation in a Drosophila Model of Huntington's Disease. J Neurosci 2024; 44:e1256232024. [PMID: 38589228 PMCID: PMC11097281 DOI: 10.1523/jneurosci.1256-23.2024] [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: 07/06/2023] [Revised: 01/31/2024] [Accepted: 02/26/2024] [Indexed: 04/10/2024] Open
Abstract
Protein misfolding, aggregation, and spread through the brain are primary drivers of neurodegenerative disease pathogenesis. Phagocytic glia are responsible for regulating the load of pathological proteins in the brain, but emerging evidence suggests that glia may also act as vectors for aggregate spread. Accumulation of protein aggregates could compromise the ability of glia to eliminate toxic materials from the brain by disrupting efficient degradation in the phagolysosomal system. A better understanding of phagocytic glial cell deficiencies in the disease state could help to identify novel therapeutic targets for multiple neurological disorders. Here, we report that mutant huntingtin (mHTT) aggregates impair glial responsiveness to injury and capacity to degrade neuronal debris in male and female adult Drosophila expressing the gene that causes Huntington's disease (HD). mHTT aggregate formation in neurons impairs engulfment and clearance of injured axons and causes accumulation of phagolysosomes in glia. Neuronal mHTT expression induces upregulation of key innate immunity and phagocytic genes, some of which were found to regulate mHTT aggregate burden in the brain. A forward genetic screen revealed Rab10 as a novel component of Draper-dependent phagocytosis that regulates mHTT aggregate transmission from neurons to glia. These data suggest that glial phagocytic defects enable engulfed mHTT aggregates to evade lysosomal degradation and acquire prion-like characteristics. Together, our findings uncover new mechanisms that enhance our understanding of the beneficial and harmful effects of phagocytic glia in HD and other neurodegenerative diseases.
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Affiliation(s)
- Graham H Davis
- Department of Biological and Biomedical Sciences, Rowan University, Glassboro, New Jersey 08028
- Department of Biology, Saint Joseph's University, Philadelphia, Pennsylvania 19131
- Department of Biological Sciences, University of the Sciences, Philadelphia, Pennsylvania 19104
| | - Aprem Zaya
- Department of Biological Sciences, University of the Sciences, Philadelphia, Pennsylvania 19104
| | - Margaret M Panning Pearce
- Department of Biological and Biomedical Sciences, Rowan University, Glassboro, New Jersey 08028
- Department of Biology, Saint Joseph's University, Philadelphia, Pennsylvania 19131
- Department of Biological Sciences, University of the Sciences, Philadelphia, Pennsylvania 19104
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Windener F, Grewing L, Thomas C, Dorion MF, Otteken M, Kular L, Jagodic M, Antel J, Albrecht S, Kuhlmann T. Physiological aging and inflammation-induced cellular senescence may contribute to oligodendroglial dysfunction in MS. Acta Neuropathol 2024; 147:82. [PMID: 38722375 PMCID: PMC11082024 DOI: 10.1007/s00401-024-02733-x] [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: 02/13/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 05/12/2024]
Abstract
Aging affects all cell types in the CNS and plays an important role in CNS diseases. However, the underlying molecular mechanisms driving these age-associated changes and their contribution to diseases are only poorly understood. The white matter in the aging brain as well as in diseases, such as Multiple sclerosis is characterized by subtle abnormalities in myelin sheaths and paranodes, suggesting that oligodendrocytes, the myelin-maintaining cells of the CNS, lose the capacity to preserve a proper myelin structure and potentially function in age and certain diseases. Here, we made use of directly converted oligodendrocytes (dchiOL) from young, adult and old human donors to study age-associated changes. dchiOL from all three age groups differentiated in an comparable manner into O4 + immature oligodendrocytes, but the proportion of MBP + mature dchiOL decreased with increasing donor age. This was associated with an increased ROS production and upregulation of cellular senescence markers such as CDKN1A, CDKN2A in old dchiOL. Comparison of the transcriptomic profiles of dchiOL from adult and old donors revealed 1324 differentially regulated genes with limited overlap with transcriptomic profiles of the donors' fibroblasts or published data sets from directly converted human neurons or primary rodent oligodendroglial lineage cells. Methylome analyses of dchiOL and human white matter tissue samples demonstrate that chronological and epigenetic age correlate in CNS white matter as well as in dchiOL and resulted in the identification of an age-specific epigenetic signature. Furthermore, we observed an accelerated epigenetic aging of the myelinated, normal appearing white matter of multiple sclerosis (MS) patients compared to healthy individuals. Impaired differentiation and upregulation of cellular senescence markers could be induced in young dchiOL in vitro using supernatants from pro-inflammatory microglia. In summary, our data suggest that physiological aging as well as inflammation-induced cellular senescence contribute to oligodendroglial pathology in inflammatory demyelinating diseases such as MS.
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Affiliation(s)
- Farina Windener
- Institute of Neuropathology, University Hospital Münster, 48149, Münster, Germany
| | - Laureen Grewing
- Institute of Neuropathology, University Hospital Münster, 48149, Münster, Germany
| | - Christian Thomas
- Institute of Neuropathology, University Hospital Münster, 48149, Münster, Germany
| | - Marie-France Dorion
- Neuroimmunology Unit, Montreal Neurological Institute and Department of Neurology and Neurosurgery, McGill University, Montreal, Canada
| | - Marie Otteken
- Institute of Neuropathology, University Hospital Münster, 48149, Münster, Germany
| | - Lara Kular
- Department of Clinical Neuroscience, Karolinska Institutet, Center for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Maja Jagodic
- Department of Clinical Neuroscience, Karolinska Institutet, Center for Molecular Medicine, Karolinska University Hospital, Stockholm, Sweden
| | - Jack Antel
- Neuroimmunology Unit, Montreal Neurological Institute and Department of Neurology and Neurosurgery, McGill University, Montreal, Canada
| | - Stefanie Albrecht
- Institute of Neuropathology, University Hospital Münster, 48149, Münster, Germany
| | - Tanja Kuhlmann
- Institute of Neuropathology, University Hospital Münster, 48149, Münster, Germany.
- Neuroimmunology Unit, Montreal Neurological Institute and Department of Neurology and Neurosurgery, McGill University, Montreal, Canada.
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7
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Griñán‐Ferré C, Jarné‐Ferrer J, Bellver‐Sanchís A, Codony S, Puigoriol‐Illamola D, Sanfeliu C, Oh Y, Lee S, Vázquez S, Pallàs M. Novel molecular mechanism driving neuroprotection after soluble epoxide hydrolase inhibition: Insights for Alzheimer's disease therapeutics. CNS Neurosci Ther 2024; 30:e14511. [PMID: 37905690 PMCID: PMC11017401 DOI: 10.1111/cns.14511] [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: 02/16/2023] [Revised: 09/21/2023] [Accepted: 10/09/2023] [Indexed: 11/02/2023] Open
Abstract
BACKGROUND Neuroinflammation is widely recognized as a significant hallmark of Alzheimer's disease (AD). To combat neuroinflammation, the inhibition of the soluble epoxide hydrolase (sEH) enzyme has been demonstrated crucial. Importantly, sEH inhibition could be related to other neuroprotective pathways described in AD. AIMS The aim of the study was to unveil new molecular pathways driving neuroprotection through sEH, we used an optimized, potent, and selective sEH inhibitor (sEHi, UB-SCG-51). MATERIALS AND METHODS UB-SCG-51 was tested in neuroblastoma cell line, SH-SY5Y, in primary mouse and human astrocytes cultures challenged with proinflammatory insults and in microglia cultures treated with amyloid oligomers, as well as in mice AD model (5XFAD). RESULTS UB-SCG-51 (10 and 30 μM) prevented neurotoxic reactive-astrocyte conversion in primary mouse astrocytes challenged with TNF-α, IL-1α, and C1q (T/I/C) combination for 24 h. Moreover, in microglial cultures, sEHi reduced inflammation and glial activity. In addition, UB-SCG-51 rescued 5XFAD cognitive impairment, reducing the number of Amyloid-β plaques and Tau hyperphosphorylation accompanied by a reduction in neuroinflammation and apoptotic markers. Notably, a transcriptional profile analysis revealed a new pathway modulated by sEHi treatment. Specifically, the eIF2α/CHOP pathway, which promoted the endoplasmic reticulum response, was increased in the 5XFAD-treated group. These findings were confirmed in human primary astrocytes by combining sEHi and eIF2α inhibitor (eIF2αi) treatment. Besides, combining both treatments resulted in increased in C3 gene expression after T/I/C compared with the group treated with sEHi alone in cultures. DISCUSSION Therefore, sEHi rescued cognitive impairment and neurodegeneration in AD mice model, based on the reduction of inflammation and eIF2α/CHOP signaling pathway. CONCLUSIONS In whole, our results support the concept that targeting neuroinflammation through sEH inhibition is a promising therapeutic strategy to fight against Alzheimer's disease with additive and/or synergistic activities targeting neuroinflammation and cell stress.
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Affiliation(s)
- Christian Griñán‐Ferré
- Department of Pharmacology and Therapeutic ChemistryInstitut de Neurociències‐Universitat de BarcelonaBarcelonaSpain
- Centro de Investigación en Red, Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos IIIMadridSpain
| | - Júlia Jarné‐Ferrer
- Department of Pharmacology and Therapeutic ChemistryInstitut de Neurociències‐Universitat de BarcelonaBarcelonaSpain
| | - Aina Bellver‐Sanchís
- Department of Pharmacology and Therapeutic ChemistryInstitut de Neurociències‐Universitat de BarcelonaBarcelonaSpain
| | - Sandra Codony
- Laboratory of Medicinal Chemistry (CSIC Associated Unit), Faculty of Pharmacy and Food Sciences, Institute of Biomedicine (IBUB)University of Barcelona (UB)BarcelonaSpain
| | - Dolors Puigoriol‐Illamola
- Department of Pharmacology and Therapeutic ChemistryInstitut de Neurociències‐Universitat de BarcelonaBarcelonaSpain
| | - Coral Sanfeliu
- Institut d'Investigacions Biomèdiques de Barcelona (IIBB), Consejo Superior de Investigaciones Científicas (CSIC)BarcelonaSpain
| | - Yumin Oh
- Neuraly Inc.MarylandGaithersburgUSA
| | | | - Santiago Vázquez
- Laboratory of Medicinal Chemistry (CSIC Associated Unit), Faculty of Pharmacy and Food Sciences, Institute of Biomedicine (IBUB)University of Barcelona (UB)BarcelonaSpain
| | - Mercè Pallàs
- Department of Pharmacology and Therapeutic ChemistryInstitut de Neurociències‐Universitat de BarcelonaBarcelonaSpain
- Centro de Investigación en Red, Enfermedades Neurodegenerativas (CIBERNED), Instituto de Salud Carlos IIIMadridSpain
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Ishii C, Nakano H, Higashiseto R, Ooki Y, Umemura M, Takahashi S, Takahashi Y. Nescient helix-loop-helix 1 (Nhlh1) is a novel activating transcription factor 5 (ATF5) target gene in olfactory and vomeronasal sensory neurons in mice. Cell Tissue Res 2024; 396:85-94. [PMID: 38388750 DOI: 10.1007/s00441-024-03871-0] [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: 09/13/2023] [Accepted: 01/23/2024] [Indexed: 02/24/2024]
Abstract
Activating transcription factor 5 (ATF5) is a transcription factor that belongs to the cAMP-response element-binding protein/ATF family and is essential for the differentiation and survival of sensory neurons in mouse olfactory organs. However, transcriptional target genes for ATF5 have yet to be identified. In the present study, chromatin immunoprecipitation-quantitative polymerase chain reaction (ChIP-qPCR) experiments were performed to verify ATF5 target genes in the main olfactory epithelium and vomeronasal organ in the postnatal pups. ChIP-qPCR was conducted using hemagglutinin (HA)-tagged ATF5 knock-in olfactory organs. The results obtained demonstrated that ATF5-HA fusion proteins bound to the CCAAT/enhancer-binding protein-ATF response element (CARE) site in the enhancer region of nescient helix-loop-helix 1 (Nhlh1), a transcription factor expressed in differentiating olfactory and vomeronasal sensory neurons. Nhlh1 mRNA expression was downregulated in ATF5-deficient (ATF5-/-) olfactory organs. The LIM/homeobox protein transcription factor Lhx2 co-localized with ATF5 in the nuclei of olfactory and vomeronasal sensory neurons and bound to the homeodomain site proximal to the CARE site in the Nhlh1 gene. The CARE region of the Nhlh1 gene was enriched by the active enhancer marker, acetyl-histone H3 (Lys27). The present study identified Nhlh1 as a novel target gene for ATF5 in murine olfactory organs. ATF5 may upregulate Nhlh1 expression in concert with Lhx2, thereby promoting the differentiation of olfactory and vomeronasal sensory neurons.
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Affiliation(s)
- Chiharu Ishii
- Laboratory of Environmental Molecular Physiology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1, Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Haruo Nakano
- Laboratory of Environmental Molecular Physiology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1, Horinouchi, Hachioji, Tokyo 192-0392, Japan.
| | - Riko Higashiseto
- Laboratory of Environmental Molecular Physiology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1, Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yusaku Ooki
- Laboratory of Environmental Molecular Physiology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1, Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Mariko Umemura
- Laboratory of Environmental Molecular Physiology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1, Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Shigeru Takahashi
- Laboratory of Environmental Molecular Physiology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1, Horinouchi, Hachioji, Tokyo 192-0392, Japan
| | - Yuji Takahashi
- Laboratory of Environmental Molecular Physiology, School of Life Sciences, Tokyo University of Pharmacy and Life Sciences, 1432-1, Horinouchi, Hachioji, Tokyo 192-0392, Japan
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9
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Wodrich APK, Harris BT, Giniger E. MANIPULATING MITOCHONDRIAL REACTIVE OXYGEN SPECIES ALTERS SURVIVAL IN UNEXPECTED WAYS IN A DROSOPHILA MODEL OF NEURODEGENERATION. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.03.25.586603. [PMID: 38585927 PMCID: PMC10996551 DOI: 10.1101/2024.03.25.586603] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/09/2024]
Abstract
Reactive oxygen species (ROS) are associated with aging and neurodegeneration, but the significance of this association remains obscure. Here, using a Drosophila model of age-related neurodegeneration, we probe this relationship in the pathologically relevant tissue, the brain, by quantifying three specific mitochondrial ROS and manipulating these redox species pharmacologically. Our goal is to ask whether pathology-associated changes in redox state are detrimental for survival, whether they may be beneficial responses, or whether they are simply covariates of pathology that do not alter viability. We find, surprisingly, that increasing mitochondrial H2O2 correlates with improved survival. We also find evidence that drugs that alter the mitochondrial glutathione redox potential modulate survival primarily through the compensatory effects they induce rather than through their direct effects on the final mitochondrial glutathione redox potential per se. We also find that the response to treatment with a redox-altering drug varies dramatically depending on the age at which the drug is administered, the duration of the treatment, and the genotype of the individual receiving the drug. These data have important implications for the design and interpretation of studies investigating the effect of redox state on health and disease as well as on efforts to modify the redox state to achieve therapeutic goals.
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Affiliation(s)
- Andrew P. K. Wodrich
- National Institutes of Health, National Institute of Neurological Disorders and Stroke, Bethesda, MD
- Georgetown University, Interdisciplinary Program in Neuroscience, Washington, DC
- University of Kentucky, College of Medicine, Lexington, KY
| | - Brent T. Harris
- Georgetown University, Interdisciplinary Program in Neuroscience, Washington, DC
- Georgetown University, Department of Pathology, Washington, DC
- Georgetown University, Department of Neurology, Washington, DC
| | - Edward Giniger
- National Institutes of Health, National Institute of Neurological Disorders and Stroke, Bethesda, MD
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10
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Davis GH, Zaya A, Pearce MMP. Impairment of the glial phagolysosomal system drives prion-like propagation in a Drosophila model of Huntington's disease. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.10.04.560952. [PMID: 38370619 PMCID: PMC10871239 DOI: 10.1101/2023.10.04.560952] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Protein misfolding, aggregation, and spread through the brain are primary drivers of neurodegenerative diseases pathogenesis. Phagocytic glia are responsible for regulating the load of pathogenic protein aggregates in the brain, but emerging evidence suggests that glia may also act as vectors for aggregate spread. Accumulation of protein aggregates could compromise the ability of glia to eliminate toxic materials from the brain by disrupting efficient degradation in the phagolysosomal system. A better understanding of phagocytic glial cell deficiencies in the disease state could help to identify novel therapeutic targets for multiple neurological disorders. Here, we report that mutant huntingtin (mHTT) aggregates impair glial responsiveness to injury and capacity to degrade neuronal debris in male and female adult Drosophila expressing the gene that causes Huntington's disease (HD). mHTT aggregate formation in neurons impairs engulfment and clearance of injured axons and causes accumulation of phagolysosomes in glia. Neuronal mHTT expression induces upregulation of key innate immunity and phagocytic genes, some of which were found to regulate mHTT aggregate burden in the brain. Finally, a forward genetic screen revealed Rab10 as a novel component of Draper-dependent phagocytosis that regulates mHTT aggregate transmission from neurons to glia. These data suggest that glial phagocytic defects enable engulfed mHTT aggregates to evade lysosomal degradation and acquire prion-like characteristics. Together, our findings reveal new mechanisms that enhance our understanding of the beneficial and potentially harmful effects of phagocytic glia in HD and potentially other neurodegenerative diseases.
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Affiliation(s)
- Graham H. Davis
- Rowan University, Department of Biological and Biomedical Sciences, Glassboro, NJ 08028
- Saint Joseph’s University, Department of Biology, Philadelphia, PA 19131
- University of the Sciences, Department of Biological Sciences, Philadelphia, PA 19104
| | - Aprem Zaya
- University of the Sciences, Department of Biological Sciences, Philadelphia, PA 19104
| | - Margaret M. Panning Pearce
- Rowan University, Department of Biological and Biomedical Sciences, Glassboro, NJ 08028
- Saint Joseph’s University, Department of Biology, Philadelphia, PA 19131
- University of the Sciences, Department of Biological Sciences, Philadelphia, PA 19104
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11
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Lee MB, Blue B, Muir M, Kaeberlein M. The million-molecule challenge: a moonshot project to rapidly advance longevity intervention discovery. GeroScience 2023; 45:3103-3113. [PMID: 37432607 PMCID: PMC10643437 DOI: 10.1007/s11357-023-00867-6] [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: 05/16/2023] [Accepted: 06/30/2023] [Indexed: 07/12/2023] Open
Abstract
Targeting aging is the future of twenty-first century preventative medicine. Small molecule interventions that promote healthy longevity are known, but few are well-developed and discovery of novel, robust interventions has stagnated. To accelerate longevity intervention discovery and development, high-throughput systems are needed that can perform unbiased drug screening and directly measure lifespan and healthspan metrics in whole animals. C. elegans is a powerful model system for this type of drug discovery. Combined with automated data capture and analysis technologies, truly high-throughput longevity drug discovery is possible. In this perspective, we propose the "million-molecule challenge", an effort to quantitatively assess 1,000,000 interventions for longevity within five years. The WormBot-AI, our best-in-class robotics and AI data analysis platform, provides a tool to achieve the million-molecule challenge for pennies per animal tested.
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Affiliation(s)
- Mitchell B Lee
- Ora Biomedical, Inc., 12101 Tukwila International Blvd Suite 210, Seattle, WA, 98168, USA.
| | - Benjamin Blue
- Ora Biomedical, Inc., 12101 Tukwila International Blvd Suite 210, Seattle, WA, 98168, USA
| | - Michael Muir
- Ora Biomedical, Inc., 12101 Tukwila International Blvd Suite 210, Seattle, WA, 98168, USA
| | - Matt Kaeberlein
- Ora Biomedical, Inc., 12101 Tukwila International Blvd Suite 210, Seattle, WA, 98168, USA
- Optispan Geroscience, Seattle, WA, USA
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12
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Zhang X, Xie F, Ma S, Ma C, Jiang X, Yi Y, Song Y, Liu M, Zhao P, Ma X. Mitochondria: one of the vital hubs for molecular hydrogen's biological functions. Front Cell Dev Biol 2023; 11:1283820. [PMID: 38020926 PMCID: PMC10662307 DOI: 10.3389/fcell.2023.1283820] [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: 08/27/2023] [Accepted: 10/23/2023] [Indexed: 12/01/2023] Open
Abstract
As a novel antioxidant, a growing body of studies has documented the diverse biological effects of molecular hydrogen (H2) in a wide range of organisms, spanning animals, plants, and microorganisms. Although several possible mechanisms have been proposed, they cannot fully explain the extensive biological effects of H2. Mitochondria, known for ATP production, also play crucial roles in diverse cellular functions, including Ca2+ signaling, regulation of reactive oxygen species (ROS) generation, apoptosis, proliferation, and lipid transport, while their dysfunction is implicated in a broad spectrum of diseases, including cardiovascular disorders, neurodegenerative conditions, metabolic disorders, and cancer. This review aims to 1) summarize the experimental evidence on the impact of H2 on mitochondrial function; 2) provide an overview of the mitochondrial pathways underlying the biological effects of H2, and 3) discuss H2 metabolism in eukaryotic organisms and its relationship with mitochondria. Moreover, based on previous findings, this review proposes that H2 may regulate mitochondrial quality control through diverse pathways in response to varying degrees of mitochondrial damage. By combining the existing research evidence with an evolutionary perspective, this review emphasizes the potential hydrogenase activity in mitochondria of higher plants and animals. Finally, this review also addresses potential issues in the current mechanistic study and offers insights into future research directions, aiming to provide a reference for future studies on the mechanisms underlying the action of H2.
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Affiliation(s)
- Xiaoyue Zhang
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Fei Xie
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Shiwen Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Chen Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Xue Jiang
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Yang Yi
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Yifei Song
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Mengyu Liu
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Pengxiang Zhao
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
| | - Xuemei Ma
- Faculty of Environment and Life, Beijing University of Technology, Beijing, China
- Beijing Molecular Hydrogen Research Center, Beijing, China
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13
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Reed AL, Mitchell W, Alexandrescu AT, Alder NN. Interactions of amyloidogenic proteins with mitochondrial protein import machinery in aging-related neurodegenerative diseases. Front Physiol 2023; 14:1263420. [PMID: 38028797 PMCID: PMC10652799 DOI: 10.3389/fphys.2023.1263420] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 10/02/2023] [Indexed: 12/01/2023] Open
Abstract
Most mitochondrial proteins are targeted to the organelle by N-terminal mitochondrial targeting sequences (MTSs, or "presequences") that are recognized by the import machinery and subsequently cleaved to yield the mature protein. MTSs do not have conserved amino acid compositions, but share common physicochemical properties, including the ability to form amphipathic α-helical structures enriched with basic and hydrophobic residues on alternating faces. The lack of strict sequence conservation implies that some polypeptides can be mistargeted to mitochondria, especially under cellular stress. The pathogenic accumulation of proteins within mitochondria is implicated in many aging-related neurodegenerative diseases, including Alzheimer's, Parkinson's, and Huntington's diseases. Mechanistically, these diseases may originate in part from mitochondrial interactions with amyloid-β precursor protein (APP) or its cleavage product amyloid-β (Aβ), α-synuclein (α-syn), and mutant forms of huntingtin (mHtt), respectively, that are mediated in part through their associations with the mitochondrial protein import machinery. Emerging evidence suggests that these amyloidogenic proteins may present cryptic targeting signals that act as MTS mimetics and can be recognized by mitochondrial import receptors and transported into different mitochondrial compartments. Accumulation of these mistargeted proteins could overwhelm the import machinery and its associated quality control mechanisms, thereby contributing to neurological disease progression. Alternatively, the uptake of amyloidogenic proteins into mitochondria may be part of a protein quality control mechanism for clearance of cytotoxic proteins. Here we review the pathomechanisms of these diseases as they relate to mitochondrial protein import and effects on mitochondrial function, what features of APP/Aβ, α-syn and mHtt make them suitable substrates for the import machinery, and how this information can be leveraged for the development of therapeutic interventions.
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Affiliation(s)
- Ashley L. Reed
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, United States
| | - Wayne Mitchell
- Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Boston, MA, United States
| | - Andrei T. Alexandrescu
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, United States
| | - Nathan N. Alder
- Department of Molecular and Cell Biology, University of Connecticut, Storrs, CT, United States
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14
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Holmannova D, Borsky P, Parova H, Stverakova T, Vosmik M, Hruska L, Fiala Z, Borska L. Non-Genomic Hallmarks of Aging-The Review. Int J Mol Sci 2023; 24:15468. [PMID: 37895144 PMCID: PMC10607657 DOI: 10.3390/ijms242015468] [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: 10/08/2023] [Revised: 10/19/2023] [Accepted: 10/21/2023] [Indexed: 10/29/2023] Open
Abstract
Aging is a natural, gradual, and inevitable process associated with a series of changes at the molecular, cellular, and tissue levels that can lead to an increased risk of many diseases, including cancer. The most significant changes at the genomic level (DNA damage, telomere shortening, epigenetic changes) and non-genomic changes are referred to as hallmarks of aging. The hallmarks of aging and cancer are intertwined. Many studies have focused on genomic hallmarks, but non-genomic hallmarks are also important and may additionally cause genomic damage and increase the expression of genomic hallmarks. Understanding the non-genomic hallmarks of aging and cancer, and how they are intertwined, may lead to the development of approaches that could influence these hallmarks and thus function not only to slow aging but also to prevent cancer. In this review, we focus on non-genomic changes. We discuss cell senescence, disruption of proteostasis, deregualation of nutrient sensing, dysregulation of immune system function, intercellular communication, mitochondrial dysfunction, stem cell exhaustion and dysbiosis.
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Affiliation(s)
- Drahomira Holmannova
- Institute of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, 500 03 Hradec Kralove, Czech Republic; (D.H.); (Z.F.); (L.B.)
| | - Pavel Borsky
- Institute of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, 500 03 Hradec Kralove, Czech Republic; (D.H.); (Z.F.); (L.B.)
| | - Helena Parova
- Department of Clinical Biochemistry and Diagnostics, University Hospital, Faculty of Medicine in Hradec Kralove, Charles University, 500 03 Hradec Kralove, Czech Republic; (H.P.); (T.S.)
| | - Tereza Stverakova
- Department of Clinical Biochemistry and Diagnostics, University Hospital, Faculty of Medicine in Hradec Kralove, Charles University, 500 03 Hradec Kralove, Czech Republic; (H.P.); (T.S.)
| | - Milan Vosmik
- Department of Oncology and Radiotherapy, University Hospital, Faculty of Medicine in Hradec Kralove, Charles University, 500 03 Hradec Kralove, Czech Republic; (M.V.); (L.H.)
| | - Libor Hruska
- Department of Oncology and Radiotherapy, University Hospital, Faculty of Medicine in Hradec Kralove, Charles University, 500 03 Hradec Kralove, Czech Republic; (M.V.); (L.H.)
| | - Zdenek Fiala
- Institute of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, 500 03 Hradec Kralove, Czech Republic; (D.H.); (Z.F.); (L.B.)
| | - Lenka Borska
- Institute of Preventive Medicine, Faculty of Medicine in Hradec Kralove, Charles University, 500 03 Hradec Kralove, Czech Republic; (D.H.); (Z.F.); (L.B.)
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15
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Wang W, Hawkridge AM, Ma Y, Zhang B, Mangrum JB, Hassan ZH, He T, Blat S, Guo C, Zhou H, Liu J, Wang XY, Fang X. Ubiquitin-like protein 5 is a novel player in the UPR-PERK arm and ER stress-induced cell death. J Biol Chem 2023; 299:104915. [PMID: 37315790 PMCID: PMC10339194 DOI: 10.1016/j.jbc.2023.104915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2022] [Revised: 05/24/2023] [Accepted: 05/25/2023] [Indexed: 06/16/2023] Open
Abstract
Biological functions of the highly conserved ubiquitin-like protein 5 (UBL5) are not well understood. In Caenorhabditis elegans, UBL5 is induced under mitochondrial stress to mount the mitochondrial unfolded protein response (UPR). However, the role of UBL5 in the more prevalent endoplasmic reticulum (ER) stress-UPR in the mammalian system is unknown. In the present work, we demonstrated that UBL5 was an ER stress-responsive protein, undergoing rapid depletion in mammalian cells and livers of mice. The ER stress-induced UBL5 depletion was mediated by proteasome-dependent yet ubiquitin-independent proteolysis. Activation of the protein kinase R-like ER kinase arm of the UPR was essential and sufficient for inducing UBL5 degradation. RNA-Seq analysis of UBL5-regulated transcriptome revealed that multiple death pathways were activated in UBL5-silenced cells. In agreement with this, UBL5 knockdown induced severe apoptosis in culture and suppressed tumorigenicity of cancer cells in vivo. Furthermore, overexpression of UBL5 protected specifically against ER stress-induced apoptosis. These results identify UBL5 as a physiologically relevant survival regulator that is proteolytically depleted by the UPR-protein kinase R-like ER kinase pathway, linking ER stress to cell death.
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Affiliation(s)
- Wei Wang
- Department of Biochemistry & Molecular Biology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Adam M Hawkridge
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Yibao Ma
- Department of Biochemistry & Molecular Biology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Bei Zhang
- Department of Biostatistics, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
| | - John B Mangrum
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Zaneera H Hassan
- Department of Pharmaceutics, School of Pharmacy, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Tianhai He
- Department of Biochemistry & Molecular Biology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Sofiya Blat
- Department of Biochemistry & Molecular Biology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Chunqing Guo
- Department of Human & Molecular Genetics, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Huiping Zhou
- Department of Microbiology & Immunology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA; Hunter Holmes McGuire VA Medical Center, Richmond, Virginia, USA
| | - Jinze Liu
- Department of Biostatistics, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Xiang-Yang Wang
- Department of Human & Molecular Genetics, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA; Hunter Holmes McGuire VA Medical Center, Richmond, Virginia, USA
| | - Xianjun Fang
- Department of Biochemistry & Molecular Biology, School of Medicine, Virginia Commonwealth University, Richmond, Virginia, USA.
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16
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Soo SK, Rudich ZD, Ko B, Moldakozhayev A, AlOkda A, Van Raamsdonk JM. Biological resilience and aging: Activation of stress response pathways contributes to lifespan extension. Ageing Res Rev 2023; 88:101941. [PMID: 37127095 DOI: 10.1016/j.arr.2023.101941] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 04/06/2023] [Accepted: 04/28/2023] [Indexed: 05/03/2023]
Abstract
While aging was traditionally viewed as a stochastic process of damage accumulation, it is now clear that aging is strongly influenced by genetics. The identification and characterization of long-lived genetic mutants in model organisms has provided insights into the genetic pathways and molecular mechanisms involved in extending longevity. Long-lived genetic mutants exhibit activation of multiple stress response pathways leading to enhanced resistance to exogenous stressors. As a result, lifespan exhibits a significant, positive correlation with resistance to stress. Disruption of stress response pathways inhibits lifespan extension in multiple long-lived mutants representing different pathways of lifespan extension and can also reduce the lifespan of wild-type animals. Combined, this suggests that activation of stress response pathways is a key mechanism by which long-lived mutants achieve their extended longevity and that many of these pathways are also required for normal lifespan. These results highlight an important role for stress response pathways in determining the lifespan of an organism.
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Affiliation(s)
- Sonja K Soo
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada; Metabolic Disorders and Complications Program, and Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Zenith D Rudich
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada; Metabolic Disorders and Complications Program, and Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Bokang Ko
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada; Metabolic Disorders and Complications Program, and Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Alibek Moldakozhayev
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada; Metabolic Disorders and Complications Program, and Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; Division of Genetics, Department of Medicine, Brigham and Women's Hospital, Harvard Medical School, Boston, MA 02115, United States
| | - Abdelrahman AlOkda
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada; Metabolic Disorders and Complications Program, and Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Jeremy M Van Raamsdonk
- Department of Neurology and Neurosurgery, McGill University, Montreal, Quebec, Canada; Metabolic Disorders and Complications Program, and Brain Repair and Integrative Neuroscience Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; Division of Experimental Medicine, Department of Medicine, McGill University, Montreal, Quebec, Canada.
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17
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Reid K, Daniels EG, Vasam G, Kamble R, Janssens GE, Hu IM, Green AE, Houtkooper RH, Menzies KJ. Reducing mitochondrial ribosomal gene expression does not alter metabolic health or lifespan in mice. Sci Rep 2023; 13:8391. [PMID: 37225705 PMCID: PMC10209074 DOI: 10.1038/s41598-023-35196-3] [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: 11/14/2022] [Accepted: 05/14/2023] [Indexed: 05/26/2023] Open
Abstract
Maintaining mitochondrial function is critical to an improved healthspan and lifespan. Introducing mild stress by inhibiting mitochondrial translation invokes the mitochondrial unfolded protein response (UPRmt) and increases lifespan in several animal models. Notably, lower mitochondrial ribosomal protein (MRP) expression also correlates with increased lifespan in a reference population of mice. In this study, we tested whether partially reducing the gene expression of a critical MRP, Mrpl54, reduced mitochondrial DNA-encoded protein content, induced the UPRmt, and affected lifespan or metabolic health using germline heterozygous Mrpl54 mice. Despite reduced Mrpl54 expression in multiple organs and a reduction in mitochondrial-encoded protein expression in myoblasts, we identified few significant differences between male or female Mrpl54+/- and wild type mice in initial body composition, respiratory parameters, energy intake and expenditure, or ambulatory motion. We also observed no differences in glucose or insulin tolerance, treadmill endurance, cold tolerance, heart rate, or blood pressure. There were no differences in median life expectancy or maximum lifespan. Overall, we demonstrate that genetic manipulation of Mrpl54 expression reduces mitochondrial-encoded protein content but is not sufficient to improve healthspan in otherwise healthy and unstressed mice.
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Affiliation(s)
- Kim Reid
- Department of Biology and Ottawa Institute of Systems Biology, University of Ottawa, 30 Marie Curie Private, Ottawa, ON, Canada
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, Ottawa Institute of Systems Biology and the Éric Poulin Centre for Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada
| | - Eileen G Daniels
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism Institute, Amsterdam, The Netherlands
| | - Goutham Vasam
- Interdisciplinary School of Health Sciences, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
| | - Rashmi Kamble
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Georges E Janssens
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism Institute, Amsterdam, The Netherlands
| | - Iman M Hu
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
- Amsterdam Gastroenterology Endocrinology and Metabolism Institute, Amsterdam, The Netherlands
| | - Alexander E Green
- Interdisciplinary School of Health Sciences, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, Ottawa Institute of Systems Biology and the Éric Poulin Centre for Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada
| | - Riekelt H Houtkooper
- Laboratory Genetic Metabolic Diseases, Amsterdam UMC Location University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
- Amsterdam Gastroenterology Endocrinology and Metabolism Institute, Amsterdam, The Netherlands.
- Amsterdam Cardiovascular Sciences Institute, Amsterdam, The Netherlands.
| | - Keir J Menzies
- Interdisciplinary School of Health Sciences, University of Ottawa, 451 Smyth Road, Ottawa, ON, K1H 8M5, Canada.
- Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, Ottawa Institute of Systems Biology and the Éric Poulin Centre for Neuromuscular Disease, University of Ottawa, Ottawa, ON, Canada.
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18
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Fan Q, Takarada-Iemata M, Okitani N, Tamatani T, Ishii H, Hattori T, Kiryu-Seo S, Kiyama H, Hori O. Brain injury triggers cell-type-specific and time-dependent endoplasmic reticulum stress responses. Glia 2023; 71:667-681. [PMID: 36412235 DOI: 10.1002/glia.24303] [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: 04/01/2022] [Revised: 10/29/2022] [Accepted: 11/03/2022] [Indexed: 11/23/2022]
Abstract
The unfolded protein response (UPR) is a signal transduction network that responds to endoplasmic reticulum (ER) stress by coordinating protein homeostasis to maintain cell viability. The UPR can also trigger cell death when adaptive responses fail to improve protein homeostasis. Despite accumulating evidence suggesting that the UPR plays a role in neurodegenerative diseases and brain insults, our understanding of how ER stress is induced under neuropathological conditions is limited. Here, we investigated the cell- and time-specific patterns of the ER stress response after brain injury using ER stress-activated indicator (ERAI) mice, which enable monitoring of the UPR in vivo via increased fluorescence of a spliced XBP-1 protein fused with the green fluorescent protein (GFP) variant Venus. Following cortical stab injury of ERAI mice, the GFP signal and number of GFP+ cells increased in the ipsilateral cortex throughout the observation period (6 h to 7 days post-injury), confirming the induction of the UPR. GFP signals were observed in injured neurons early (from 6 h) after brain injury. However, non-neuronal cells, mainly endothelial cells followed by astrocytes, accounted for the majority of GFP+ cells after brain injury. Similar results were obtained in a mouse model of focal cerebral ischemia. These findings suggest that activation of the UPR in both neuronal and non-neuronal cells, especially endothelial cells and astrocytes, may play an important role in and could be a potential therapeutic target for acute brain injuries.
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Affiliation(s)
- Qiyan Fan
- Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Mika Takarada-Iemata
- Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Nahoko Okitani
- Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Takashi Tamatani
- Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Hiroshi Ishii
- Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Tsuyoshi Hattori
- Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Sumiko Kiryu-Seo
- Department of Functional Anatomy and Neuroscience, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Hiroshi Kiyama
- Department of Functional Anatomy and Neuroscience, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Osamu Hori
- Department of Neuroanatomy, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
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19
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Soni KK, Hwang J, Ramalingam M, Kim C, Kim BC, Jeong HS, Jang S. Endoplasmic Reticulum Stress Causing Apoptosis in a Mouse Model of an Ischemic Spinal Cord Injury. Int J Mol Sci 2023; 24:ijms24021307. [PMID: 36674822 PMCID: PMC9862494 DOI: 10.3390/ijms24021307] [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: 12/12/2022] [Revised: 01/05/2023] [Accepted: 01/06/2023] [Indexed: 01/11/2023] Open
Abstract
A spinal cord injury (SCI) is the devastating trauma associated with functional deterioration due to apoptosis. Most laboratory SCI models are generated by a direct impact on an animal's spinal cord; however, our model does not involve the direct impact on the spinal cord. Instead, we use a clamp compression to create an ischemia in the descending aortas of mice. Following the success of inducing an ischemic SCI (ISCI), we hypothesized that this model may show apoptosis via an endoplasmic reticulum (ER) stress pathway. This apoptosis by the ER stress pathway is enhanced by the inducible nitric oxide synthase (iNOS). The ER is used for the protein folding in the cell. When the protein folding capacity is overloaded, the condition is termed the ER stress and is characterized by the accumulation of misfolded proteins inside the ER lumen. The unfolded protein response (UPR) signaling pathways that deal with the ER stress response then become activated. This UPR activates the three signal pathways that are regulated by the inositol-requiring enzyme 1α (IRE1α), the activating transcription factor 6 (ATF6), and the protein kinase RNA-like ER kinase (PERK). IRE1α and PERK are associated with the expression of the apoptotic proteins. Apoptosis caused by an ISCI is assessed using the terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) test. An ISCI also reduces synaptophysin and the neuronal nuclear protein (NeuN) in the spinal cord. In conclusion, an ISCI increases the ER stress proteins, resulting in apoptosis in neuronal cells in the spinal cord.
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Affiliation(s)
- Kiran Kumar Soni
- Department of Physiology, Chonnam National University Medical School, Hwasun 58128, Republic of Korea
| | - Jinsu Hwang
- Department of Physiology, Chonnam National University Medical School, Hwasun 58128, Republic of Korea
| | - Mahesh Ramalingam
- Department of Physiology, Chonnam National University Medical School, Hwasun 58128, Republic of Korea
| | - Choonghyo Kim
- Department of Neurosurgery, Kangwon National University School of Medicine, Chuncheon 24341, Republic of Korea
| | - Byeong C. Kim
- Department of Neurology, Chonnam National University Hospital, Chonnam National University Medical School, Gwangju 61469, Republic of Korea
| | - Han-Seong Jeong
- Department of Physiology, Chonnam National University Medical School, Hwasun 58128, Republic of Korea
- Correspondence: (H.-S.J.); (S.J.)
| | - Sujeong Jang
- Department of Physiology, Chonnam National University Medical School, Hwasun 58128, Republic of Korea
- Correspondence: (H.-S.J.); (S.J.)
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20
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Neupane S, De Cecco E, Aguzzi A. The Hidden Cell-to-Cell Trail of α-Synuclein Aggregates. J Mol Biol 2022:167930. [PMID: 36566800 DOI: 10.1016/j.jmb.2022.167930] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2022] [Revised: 12/10/2022] [Accepted: 12/16/2022] [Indexed: 12/24/2022]
Abstract
The progressive accumulation of insoluble aggregates of the presynaptic protein alpha-synuclein (α-Syn) is a hallmark of neurodegenerative disorders including Parkinson's disease (PD), Multiple System Atrophy, and Dementia with Lewy Bodies, commonly referred to as synucleinopathies. Despite considerable progress on the structural biology of these aggregates, the molecular mechanisms mediating their cell-to-cell transmission, propagation, and neurotoxicity remain only partially understood. Numerous studies have highlighted the stereotypical spatiotemporal spreading of pathological α-Syn aggregates across different tissues and anatomically connected brain regions over time. Experimental evidence from various cellular and animal models indicate that α-Syn transfer occurs in two defined steps: the release of pathogenic α-Syn species from infected cells, and their uptake via passive or active endocytic pathways. Once α-Syn aggregates have been internalized, little is known about what drives their toxicity or how they interact with the endogenous protein to promote its misfolding and subsequent aggregation. Similarly, unknown genetic factors modulate different cellular responses to the aggregation and accumulation of pathogenic α-Syn species. Here we discuss the current understanding of the molecular phenomena associated with the intercellular spreading of pathogenic α-Syn seeds and summarize the evidence supporting the transmission hypothesis. Understanding the molecular mechanisms involved in α-Syn aggregates transmission is essential to develop novel targeted therapeutics against PD and related synucleinopathies.
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Affiliation(s)
- Sandesh Neupane
- Institute of Neuropathology, University Hospital of Zurich, University of Zurich, Schmelzbergstrasse 12, 8091 Zurich, Switzerland. https://twitter.com/neuron_sandesh
| | - Elena De Cecco
- Institute of Neuropathology, University Hospital of Zurich, University of Zurich, Schmelzbergstrasse 12, 8091 Zurich, Switzerland.
| | - Adriano Aguzzi
- Institute of Neuropathology, University Hospital of Zurich, University of Zurich, Schmelzbergstrasse 12, 8091 Zurich, Switzerland.
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21
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Mizumoto T, Yoshizawa T, Sato Y, Ito T, Tsuyama T, Satoh A, Araki S, Tsujita K, Tamura M, Oike Y, Yamagata K. SIRT7 Deficiency Protects against Aging-Associated Glucose Intolerance and Extends Lifespan in Male Mice. Cells 2022; 11:cells11223609. [PMID: 36429037 PMCID: PMC9688483 DOI: 10.3390/cells11223609] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2022] [Revised: 11/02/2022] [Accepted: 11/11/2022] [Indexed: 11/18/2022] Open
Abstract
Sirtuins (SIRT1-7 in mammals) are evolutionarily conserved nicotinamide adenine dinucleotide-dependent lysine deacetylases/deacylases that regulate fundamental biological processes including aging. In this study, we reveal that male Sirt7 knockout (KO) mice exhibited an extension of mean and maximum lifespan and a delay in the age-associated mortality rate. In addition, aged male Sirt7 KO mice displayed better glucose tolerance with improved insulin sensitivity compared with wild-type (WT) mice. Fibroblast growth factor 21 (FGF21) enhances insulin sensitivity and extends lifespan when it is overexpressed. Serum levels of FGF21 were markedly decreased with aging in WT mice. In contrast, this decrease was suppressed in Sirt7 KO mice, and the serum FGF21 levels of aged male Sirt7 KO mice were higher than those of WT mice. Activating transcription factor 4 (ATF4) stimulates Fgf21 transcription, and the hepatic levels of Atf4 mRNA were increased in aged male Sirt7 KO mice compared with WT mice. Our findings indicate that the loss of SIRT7 extends lifespan and improves glucose metabolism in male mice. High serum FGF21 levels might be involved in the beneficial effect of SIRT7 deficiency.
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Affiliation(s)
- Tomoya Mizumoto
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Tatsuya Yoshizawa
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Yoshifumi Sato
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Takaaki Ito
- Department of Medical Technology, Faculty of Health Science, Kumamoto Health Science University, Kumamoto 861-5598, Japan
| | - Tomonori Tsuyama
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
- Center for Metabolic Regulation of Healthy Aging, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Akiko Satoh
- Department of Integrative Physiology, National Center for Geriatrics and Gerontology, Obu 474-8511, Japan
- Department of Integrative Physiology, Institute of Development, Aging, and Cancer, Tohoku University, Sendai 980-8575, Japan
| | - Satoshi Araki
- Department of Cardiovascular Medicine, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Kenichi Tsujita
- Center for Metabolic Regulation of Healthy Aging, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
- Department of Cardiovascular Medicine, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Masaru Tamura
- Technology and Development Team for Mouse Phenotype Analysis, RIKEN BioResource Research Center, Tsukuba-shi 305-0074, Japan
| | - Yuichi Oike
- Center for Metabolic Regulation of Healthy Aging, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
- Department of Molecular Genetics, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
| | - Kazuya Yamagata
- Department of Medical Biochemistry, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
- Center for Metabolic Regulation of Healthy Aging, Faculty of Life Sciences, Kumamoto University, Kumamoto 860-8556, Japan
- Correspondence: ; Tel.: +81-96-373-5068; Fax: +81-96-364-6940
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22
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Endoplasmic Reticulum Stress in Chronic Obstructive Pulmonary Disease: Mechanisms and Future Perspectives. Biomolecules 2022; 12:biom12111637. [DOI: 10.3390/biom12111637] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2022] [Revised: 10/31/2022] [Accepted: 11/01/2022] [Indexed: 11/06/2022] Open
Abstract
The endoplasmic reticulum (ER) is an integral organelle for maintaining protein homeostasis. Multiple factors can disrupt protein folding in the lumen of the ER, triggering ER stress and activating the unfolded protein response (UPR), which interrelates with various damage mechanisms, such as inflammation, apoptosis, and autophagy. Numerous studies have linked ER stress and UPR to the progression of chronic obstructive pulmonary disease (COPD). This review focuses on the mechanisms of other cellular processes triggered by UPR and summarizes drug intervention strategies targeting the UPR pathway in COPD to explore new therapeutic approaches and preventive measures for COPD.
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23
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Roberto Pinto A, Américo MF, Terenzi H, Silveira DB. Inhibiting IRE-1 RNase signaling decreases HIV-1 Tat-induced inflammatory M1 state in microglial cells. Biochim Biophys Acta Gen Subj 2022; 1866:130219. [PMID: 35926731 DOI: 10.1016/j.bbagen.2022.130219] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 07/06/2022] [Accepted: 07/27/2022] [Indexed: 11/16/2022]
Abstract
HIV-1 transactivator (Tat) protein plays a critical role in neurological disorders resulting from viral infection, commonly known as HIV-1-associated neurocognitive disorders (HAND). Previous studies have shown that circulant Tat induces M1 microglial activation, one of the hallmark features of HAND, and this is coupled with ER stress and subsequent Unfolded Protein Response (UPR) triggering. Here, we demonstrate that bystander stimuli of Tat in microglial cells result in the simultaneous overexpression of IRE1-related markers and production of M1-typed proinflammatory mediators. We also show that blocking IRE1/XBP-1 signaling using 4μ8C diminishes such inflammatory response. These findings reinforce a role for the IRE1/XBP-1 pathway in HIV-1 Tat neuropathology and suggest that targeting IRE1 RNase activity using 4μ8C or analogue compounds may provide a therapeutic intervention to mitigate against neuroinflammation in HAND.
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Affiliation(s)
- Aguinaldo Roberto Pinto
- Laboratório de Imunologia Aplicada, Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, 88040-970 Florianópolis, SC, Brazil
| | - Monique Ferrary Américo
- Laboratório de Imunologia Aplicada, Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, 88040-970 Florianópolis, SC, Brazil
| | - Hernán Terenzi
- Laboratório de Biologia Estrutural, Departamento de Bioquímica, Universidade Federal de Santa Catarina, 88040-900 Florianópolis, SC, Brazil
| | - Douglas Bardini Silveira
- Laboratório de Imunologia Aplicada, Departamento de Microbiologia, Imunologia e Parasitologia, Universidade Federal de Santa Catarina, 88040-970 Florianópolis, SC, Brazil.
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24
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Zhou Z, Fan Y, Zong R, Tan K. The mitochondrial unfolded protein response: A multitasking giant in the fight against human diseases. Ageing Res Rev 2022; 81:101702. [PMID: 35908669 DOI: 10.1016/j.arr.2022.101702] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2022] [Revised: 07/15/2022] [Accepted: 07/26/2022] [Indexed: 02/06/2023]
Abstract
Mitochondria, which serve as the energy factories of cells, are involved in cell differentiation, calcium homeostasis, amino acid and fatty acid metabolism and apoptosis. In response to environmental stresses, mitochondrial homeostasis is regulated at both the organelle and molecular levels to effectively maintain the number and function of mitochondria. The mitochondrial unfolded protein response (UPRmt) is an adaptive intracellular stress mechanism that responds to stress signals by promoting the transcription of genes encoding mitochondrial chaperones and proteases. The mechanism of the UPRmt in Caenorhabditis elegans (C. elegans) has been clarified over time, and the main regulatory factors include ATFS-1, UBL-5 and DVE-1. In mammals, the activation of the UPRmt involves eIF2α phosphorylation and the uORF-regulated expression of CHOP, ATF4 and ATF5. Several additional factors, such as SIRT3 and HSF1, are also involved in regulating the UPRmt. A deep and comprehensive exploration of the UPRmt can provide new directions and strategies for the treatment of human diseases, including aging, neurodegenerative diseases, cardiovascular diseases and diabetes. In this review, we mainly discuss the function of UPRmt, describe the regulatory mechanisms of UPRmt in C. elegans and mammals, and summarize the relationship between UPRmt and various human diseases.
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Affiliation(s)
- Zixin Zhou
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China; State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, University of Chinese Academy of Sciences, Beijing, China
| | - Yumei Fan
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Ruikai Zong
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China
| | - Ke Tan
- Key Laboratory of Molecular and Cellular Biology of Ministry of Education, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei 050024, China.
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25
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Wolska-Washer A, Smolewski P. Targeting Protein Degradation Pathways in Tumors: Focusing on their Role in Hematological Malignancies. Cancers (Basel) 2022; 14:3778. [PMID: 35954440 PMCID: PMC9367439 DOI: 10.3390/cancers14153778] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Revised: 07/12/2022] [Accepted: 07/26/2022] [Indexed: 02/01/2023] Open
Abstract
Cells must maintain their proteome homeostasis by balancing protein synthesis and degradation. This is facilitated by evolutionarily-conserved processes, including the unfolded protein response and the proteasome-based system of protein clearance, autophagy, and chaperone-mediated autophagy. In some hematological malignancies, including acute myeloid leukemia, misfolding or aggregation of the wild-type p53 tumor-suppressor renders cells unable to undergo apoptosis, even with an intact p53 DNA sequence. Moreover, blocking the proteasome pathway triggers lymphoma cell apoptosis. Extensive studies have led to the development of proteasome inhibitors, which have advanced into drugs (such as bortezomib) used in the treatment of certain hematological tumors, including multiple myeloma. New therapeutic options have been studied making use of the so-called proteolysis-targeting chimeras (PROTACs), that bind desired proteins with a linker that connects them to an E3 ubiquitin ligase, resulting in proteasomal-targeted degradation. This review examines the mechanisms of protein degradation in the cells of the hematopoietic system, explains the role of dysfunctional protein degradation in the pathogenesis of hematological malignancies, and discusses the current and future advances of therapies targeting these pathways, based on an extensive search of the articles and conference proceedings from 2005 to April 2022.
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Affiliation(s)
| | - Piotr Smolewski
- Department of Experimental Hematology, Medical University of Lodz, 93-510 Lodz, Poland;
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26
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Martínez-Rubio D, Rodríguez-Prieto Á, Sancho P, Navarro-González C, Gorría-Redondo N, Miquel-Leal J, Marco-Marín C, Jenkins A, Soriano-Navarro M, Hernández A, Pérez-Dueñas B, Fazzari P, AƗguilera-Albesa S, Espinós C. Protein misfolding and clearance in the pathogenesis of a new infantile onset ataxia caused by mutations in PRDX3. Hum Mol Genet 2022; 31:3897-3913. [PMID: 35766882 DOI: 10.1093/hmg/ddac146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2022] [Revised: 06/09/2022] [Accepted: 06/27/2022] [Indexed: 11/13/2022] Open
Abstract
Peroxiredoxin 3 (PRDX3) encodes a mitochondrial antioxidant protein which is essential for the control of reactive oxidative species (ROS) homeostasis. So far, PRDX3 mutations are involved in mild-to-moderate progressive juvenile onset cerebellar ataxia. We aimed to unravel the molecular bases underlying the disease in an infant suffering from cerebellar ataxia that started at 19 months old and presented severe cerebellar atrophy and peripheral neuropathy early in the course of disease. By whole exome sequencing, we identified a novel homozygous mutation, PRDX3 p.D163E, which impaired the mitochondrial ROS defense system. In mouse primary cortical neurons, the exogenous expression of PRDX3 p.D163E was reduced and triggered alterations in neurite morphology and in mitochondria. Mitochondrial computational parameters showed that p.D163E led to serious mitochondrial alterations. In transfected HeLa cells expressing the mutation, mitochondria accumulation was detected by correlative light electron microscopy (CLEM). Mitochondrial morphology showed severe changes, including extremely damaged outer and inner membranes with a notable cristae disorganization. Moreover, spherical structures compatible with lipid droplets were identified, which can be associated with a generalized response to stress and can be involved in the removal of unfolded proteins. In the patient's fibroblasts, PRDX3 expression was nearly absent. The biochemical analysis suggested that the mutation p.D163E would result in an unstable structure tending to form aggregates that trigger unfolded protein responses via mitochondria and endoplasmic reticulum. Altogether, our findings broaden the clinical spectrum of the recently described PRDX3-associated neurodegeneration and provide new insight into the pathological mechanisms underlying this new form of cerebellar ataxia.
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Affiliation(s)
- Dolores Martínez-Rubio
- Rare Neurodegenerative Diseases Laboratory, Centro de Investigación Príncipe Felipe (CIPF), 46012 Valencia, Spain.,Joint Unit CIPF-IIS La Fe Rare Diseases, 46012 Valencia, Spain
| | - Ángela Rodríguez-Prieto
- Cortical Circuits in Health and Disease Laboratory, Centro de Investigación Príncipe Felipe (CIPF), 46012 Valencia, Spain
| | - Paula Sancho
- Rare Neurodegenerative Diseases Laboratory, Centro de Investigación Príncipe Felipe (CIPF), 46012 Valencia, Spain
| | - Carmen Navarro-González
- Cortical Circuits in Health and Disease Laboratory, Centro de Investigación Príncipe Felipe (CIPF), 46012 Valencia, Spain
| | - Nerea Gorría-Redondo
- Pediatric Neurology Unit, Department of Pediatrics, Complejo Hospitalario de Navarra, Navarrabiomed, 31008 Pamplona, Spain
| | - Javier Miquel-Leal
- Cortical Circuits in Health and Disease Laboratory, Centro de Investigación Príncipe Felipe (CIPF), 46012 Valencia, Spain
| | - Clara Marco-Marín
- Structural Enzymopathology Unit, Instituto de Biomedicina de Valencia (IBV), Consejo Superior de Investigaciones Científicas (CSIC), CIBER de Enfermedades Raras (CIBERER-ISCIII), 46010 Valencia, Spain
| | - Alison Jenkins
- Rare Neurodegenerative Diseases Laboratory, Centro de Investigación Príncipe Felipe (CIPF), 46012 Valencia, Spain
| | - Mario Soriano-Navarro
- Electron Microscopy Core Facility, Centro de Investigación Príncipe Felipe (CIPF), 46012 Valencia, Spain
| | - Alberto Hernández
- Service of Advanced Light Microscopy, Centro de Investigación Príncipe Felipe (CIPF), 46012 Valencia, Spain
| | - Belén Pérez-Dueñas
- Department of Pediatric Neurology, Hospital Universitari Vall d'Hebron, Vall d'Hebron Institut de Recerca, 08035 Barcelona, Spain
| | - Pietro Fazzari
- Cortical Circuits in Health and Disease Laboratory, Centro de Investigación Príncipe Felipe (CIPF), 46012 Valencia, Spain
| | - Sergio AƗguilera-Albesa
- Pediatric Neurology Unit, Department of Pediatrics, Complejo Hospitalario de Navarra, Navarrabiomed, 31008 Pamplona, Spain
| | - Carmen Espinós
- Rare Neurodegenerative Diseases Laboratory, Centro de Investigación Príncipe Felipe (CIPF), 46012 Valencia, Spain.,Joint Unit CIPF-IIS La Fe Rare Diseases, 46012 Valencia, Spain.,Biotechnology Department, Faculty of Veterinary and Experimental Sciences, Universidad Católica de Valencia, 46001 Valencia, Spain
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27
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Guo S, Wehbe A, Syed S, Wills M, Guan L, Lv S, Li F, Geng X, Ding Y. Cerebral Glucose Metabolism and Potential Effects on Endoplasmic Reticulum Stress in Stroke. Aging Dis 2022; 14:450-467. [PMID: 37008060 PMCID: PMC10017147 DOI: 10.14336/ad.2022.0905] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2022] [Accepted: 09/05/2022] [Indexed: 11/18/2022] Open
Abstract
Ischemic stroke is an extremely common pathology with strikingly high morbidity and mortality rates. The endoplasmic reticulum (ER) is the primary organelle responsible for conducting protein synthesis and trafficking as well as preserving intracellular Ca2+ homeostasis. Mounting evidence shows that ER stress contributes to stroke pathophysiology. Moreover, insufficient circulation to the brain after stroke causes suppression of ATP production. Glucose metabolism disorder is an important pathological process after stroke. Here, we discuss the relationship between ER stress and stroke and treatment and intervention of ER stress after stroke. We also discuss the role of glucose metabolism, particularly glycolysis and gluconeogenesis, post-stroke. Based on recent studies, we speculate about the potential relationship and crosstalk between glucose metabolism and ER stress. In conclusion, we describe ER stress, glycolysis, and gluconeogenesis in the context of stroke and explore how the interplay between ER stress and glucose metabolism contributes to the pathophysiology of stroke.
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Affiliation(s)
- Sichao Guo
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China
- Department of Neurosurgery, Wayne State University School of Medicine, USA
| | - Alexandra Wehbe
- Department of Neurosurgery, Wayne State University School of Medicine, USA
- Harvard T.H. Chan School of Public Health, USA
| | - Shabber Syed
- Department of Neurosurgery, Wayne State University School of Medicine, USA
| | - Melissa Wills
- Department of Neurosurgery, Wayne State University School of Medicine, USA
| | - Longfei Guan
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China
- Department of Neurosurgery, Wayne State University School of Medicine, USA
| | - Shuyu Lv
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, China
| | - Fengwu Li
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China
| | - Xiaokun Geng
- China-America Institute of Neuroscience, Beijing Luhe Hospital, Capital Medical University, China
- Department of Neurosurgery, Wayne State University School of Medicine, USA
- Department of Neurology, Beijing Luhe Hospital, Capital Medical University, China
- Correspondence should be addressed to: Dr. Xiaokun Geng, Beijing Luhe Hospital, Capital Medical University, Beijing, China. E-mail: ; Dr. Yuchuan Ding, Wayne State University School of Medicine, Detroit, MI 48201, USA. E-mail:
| | - Yuchuan Ding
- Department of Neurosurgery, Wayne State University School of Medicine, USA
- Correspondence should be addressed to: Dr. Xiaokun Geng, Beijing Luhe Hospital, Capital Medical University, Beijing, China. E-mail: ; Dr. Yuchuan Ding, Wayne State University School of Medicine, Detroit, MI 48201, USA. E-mail:
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