1
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Feng X, Wang X, Guang S, Pang S, Tang H. Inhibition of the nucleolar RNA exosome facilitates adaptation to starvation. PLoS Biol 2025; 23:e3003190. [PMID: 40397874 DOI: 10.1371/journal.pbio.3003190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2024] [Accepted: 04/30/2025] [Indexed: 05/23/2025] Open
Abstract
In response to nutrient scarcity, cells must reallocate their limited energy for cellular maintenance at the expense of certain processes. How such a tradeoff is achieved remains largely unknown. RNA surveillance is crucial for the integrity of the transcriptome, whose defects are associated with several human diseases. Unexpectedly, we discover that the nucleolar RNA exosome, a key RNA surveillance machine, is inhibited by starvation. This is not merely the cessation of a temporarily non-essential process, but rather a key signal to allocate energy. By rewiring one-carbon metabolism, the inhibition of RNA exosome reduces translation, the most energy-consuming process. Energy is then conserved for fat synthesis to enhance cellular maintenance and starvation survival. Notably, while benefiting starvation fitness, RNA exosome inhibition impairs the life span of well-fed animals, indicating a tradeoff between short-term and long-term fitness. Our findings suggest that the nucleolar RNA surveillance can be temporarily sacrificed to facilitate starvation adaptation.
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Affiliation(s)
- Xi Feng
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Xiaoman Wang
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Shouhong Guang
- Department of Obstetrics and Gynecology, The First Affiliated Hospital of USTC, The USTC RNA Institute, Ministry of Education Key Laboratory for Membraneless Organelles & Cellular Dynamics, School of Life Sciences, Division of Life Sciences and Medicine, Biomedical Sciences and Health Laboratory of Anhui Province, University of Science and Technology of China, Hefei, China
| | - Shanshan Pang
- School of Life Sciences, Chongqing University, Chongqing, China
| | - Haiqing Tang
- School of Life Sciences, Chongqing University, Chongqing, China
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2
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Wei J, Zhang J, Ding N, Liu Y, Wu Y, Duan R. Anti-Aging Effects and Mechanisms of Cod Collagen Peptides (CCPs) in Caenorhabditis elegans. J Funct Biomater 2025; 16:150. [PMID: 40422815 DOI: 10.3390/jfb16050150] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2025] [Revised: 04/16/2025] [Accepted: 04/21/2025] [Indexed: 05/28/2025] Open
Abstract
Given the growing interest in natural compounds for promoting healthy aging, this study aimed to investigate the potential of cod collagen peptides (CCPs), a readily available marine resource, to extend lifespan and improve health. Lifespan assays were performed on C. elegans treated with different concentrations of CCPs. Furthermore, various stress resistance assays, including those evaluating oxidative and thermal stress, were conducted. To elucidate the underlying mechanisms, gene expression analysis of key aging-related genes was performed. The results demonstrated that treatment with 25 mg/mL of CCPs extended the lifespan of C. elegans by 13.2%, increased body length and width by 14.8% and 20.6%, respectively, and enhanced head-swing and body-bending frequencies by 66.9% and 80.4%. Lipofuscin content and apoptosis were reduced by 45.9% and 34.1%, respectively. C. elegans treated with 25 mg/mL of CCPs also showed improved stress resistance, a 90.7% increase in glutathione peroxidase (GPX) activity, and a 147.4% increase in glutathione (GSH) content. Transcriptomic analysis showed that CCPs enhanced anti-aging activity by activating the MAPK pathway and inhibiting the IIS pathway, which was associated with protein aggregation. It also reduced lipid synthesis and regulated lipid metabolism through the fat-6 pathway. The results indicated that CCPs could be employed as a valuable ingredient in the food and pharmaceutical fields.
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Affiliation(s)
- Jiale Wei
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
- School of Ocean Food and Biological Engineering, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
| | - Junjie Zhang
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
- School of Ocean Food and Biological Engineering, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
| | - Nan Ding
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
- School of Ocean Food and Biological Engineering, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
| | - Yu Liu
- School of Ocean Food and Biological Engineering, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
- Jiangsu Key Laboratory of Marine Biotechnology, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
| | - Yuzhen Wu
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
- School of Ocean Food and Biological Engineering, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
| | - Rui Duan
- Jiangsu Key Laboratory of Marine Bioresources and Environment, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
- Co-Innovation Center of Jiangsu Marine Bio-Industry Technology, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
- School of Marine Science and Fisheries, Jiangsu Ocean University, 59 Cangwu Road, Lianyungang 222005, China
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3
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Jia K, Shi P, Zhang L, Yan X, Xu J, Liao K. HSF1 Mediates Palmitic Acid-Disrupted Lipid Metabolism and Inflammatory Response by Maintaining Endoplasmic Reticulum Homeostasis in Fish. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2025; 73:5236-5247. [PMID: 39987503 DOI: 10.1021/acs.jafc.4c09302] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2025]
Abstract
Fish oil (FO) is being progressively replaced by palm oil (PO), which is rich in palmitic acid (PA). However, our understanding of the effects of PA on fish and the underlying molecular mechanisms remains limited. Heat shock transcription factor 1 (HSF1) is a critical transcription factor involved in stress response, but whether it responds to the effects of PA in fish remains unknown. In this study, in vitro and in vivo experiments were combined to investigate the molecular mechanisms by which HSF1 responds to PA. Our results indicated that PA induced fat accumulation, inflammation, and activation of protein processing in the endoplasmic reticulum (PPER) in the PaL cells. Moreover, the nuclear translocation of HSF1 was significantly increased by PA. After HSF1 was disrupted using small molecules (HSF1A and KRIBB11) or through HSF1A knockout, the PA-induced fat accumulation and expression levels of key genes related to PPER, lipid metabolism, and inflammation were significantly altered. Additionally, the analysis of CUT&Tag sequencing and dual-luciferase reporter showed that HSF1 protein can directly bind to the promoters of genes involved in PPER, lipid metabolism, and inflammatory response, thereby activating their transcriptional activity, especially HSC70, HSP90α, and HSP90β. Eicosapentaenoic acid (EPA) supplementation significantly improved the survival rate and growth performance of juvenile silver pomfret and reduced PA-induced adverse effects by inhibiting the activation of HSF1 in the liver. This study proves that HSF1 protein may respond to PA-induced lipid metabolism disorder and inflammatory response by maintaining endoplasmic reticulum stability in fish. Furthermore, EPA supplementation effectively counteracts PA-induced adverse effects.
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Affiliation(s)
- Kun Jia
- School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Peng Shi
- Animal Husbandry and Fisheries Research Center of Guangdong Haid Group Co., Ltd., Guangzhou 511400, China
| | - Lei Zhang
- School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Xiaojun Yan
- School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Jilin Xu
- School of Marine Sciences, Ningbo University, Ningbo 315211, China
| | - Kai Liao
- School of Marine Sciences, Ningbo University, Ningbo 315211, China
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4
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Zhou X, Li Z, Ren F, Deng H, Wen J, Xiang Q, Zhou Z, Yang X, Rao C. Endoplasmic reticulum stress and unfolded protein response in renal lipid metabolism. Exp Cell Res 2025; 446:114463. [PMID: 39971174 DOI: 10.1016/j.yexcr.2025.114463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2024] [Revised: 02/06/2025] [Accepted: 02/16/2025] [Indexed: 02/21/2025]
Abstract
The endoplasmic reticulum (ER) is a crucial cellular organelle involved in protein synthesis, folding, modification, and transport. Exposure to internal and external stressors can induce endoplasmic reticulum stress (ERS), leading to abnormal protein folding and ER malfunction. This stress can disrupt lipid synthesis, metabolism, and transport processes. Fatty acid oxidation is the primary energy source for the renal system. When energy intake exceeds the storage capacity of adipose tissue, lipids accumulate abnormally in non-adipose tissues, including kidneys, liver, and pancreas. Lipids accumulate in the kidneys of nearly all cell types, including thylakoid membranous, pedunculated, and proximal renal tubular epithelial cells. Intracellular free fatty acids can significantly disrupt renal lipid metabolism, contributing to ischemia-reperfusion acute kidney injury, diabetic nephropathy, renal fibrosis, and lupus nephritis. Consequently, this study delineated the primary signaling pathways and mechanisms of the ERS-induced unfolded protein response, explored the mechanistic link between ERS and lipid metabolism, and elucidated its role in renal lipid metabolism. This study aimed to offer new perspectives on managing and treating renal disorders.
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Affiliation(s)
- Xinyi Zhou
- School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; R&D Center for Efficiency, Safety and Application in Chinese Materia Medica with Medical and Edible Values, School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Ziyi Li
- School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; R&D Center for Efficiency, Safety and Application in Chinese Materia Medica with Medical and Edible Values, School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Fajian Ren
- School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; R&D Center for Efficiency, Safety and Application in Chinese Materia Medica with Medical and Edible Values, School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Hua Deng
- School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; R&D Center for Efficiency, Safety and Application in Chinese Materia Medica with Medical and Edible Values, School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Jiayu Wen
- School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; R&D Center for Efficiency, Safety and Application in Chinese Materia Medica with Medical and Edible Values, School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Qiwen Xiang
- School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; R&D Center for Efficiency, Safety and Application in Chinese Materia Medica with Medical and Edible Values, School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Zhihui Zhou
- School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; R&D Center for Efficiency, Safety and Application in Chinese Materia Medica with Medical and Edible Values, School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Xiyun Yang
- School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; R&D Center for Efficiency, Safety and Application in Chinese Materia Medica with Medical and Edible Values, School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China
| | - Chaolong Rao
- School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; R&D Center for Efficiency, Safety and Application in Chinese Materia Medica with Medical and Edible Values, School of Public Health, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China; State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu, Sichuan, 611137, China.
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5
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Coakley AJ, Hruby AJ, Wang J, Bong A, Nair T, Ramos CM, Alcala A, Hicks D, Averbukh M, Dutta N, Moaddeli D, Siebrand C, Rogers MDLR, Sahay A, Curran SP, Mullen PJ, Benayoun BA, Garcia G, Higuchi-Sanabria R. Distinct mechanisms of non-autonomous UPR ER mediated by GABAergic, glutamatergic, and octopaminergic neurons. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.27.595950. [PMID: 38854121 PMCID: PMC11160609 DOI: 10.1101/2024.05.27.595950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
The capacity to deal with stress declines during the aging process, and preservation of cellular stress responses is critical to healthy aging. The unfolded protein response of the endoplasmic reticulum (UPRER) is one such conserved mechanism, which is critical for the maintenance of several major functions of the ER during stress, including protein folding and lipid metabolism. Hyperactivation of the UPRER by overexpression of the major transcription factor, xbp-1s, solely in neurons drives lifespan extension as neurons send a neurotransmitter-based signal to other tissue to activate UPRER in a non-autonomous fashion. Previous work identified serotonergic, dopaminergic, and tyraminergic neurons in this signaling paradigm. To further expand our understanding of the neural circuitry that underlies the non-autonomous signaling of ER stress, we activated UPRER solely in glutamatergic, octopaminergic, and GABAergic neurons in C. elegans and paired whole-body transcriptomic analysis with functional assays. We found that UPRER-induced signals from glutamatergic neurons increased expression of canonical protein homeostasis pathways and octopaminergic neurons promoted pathogen response pathways; while minor, statistically significant changes were observed in lipid metabolism-related genes with GABAergic UPRER activation. These findings provide further evidence for the distinct role neuronal subtypes play in driving the diverse response to ER stress.
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Affiliation(s)
- Aeowynn J. Coakley
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Adam J. Hruby
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Jing Wang
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Andrew Bong
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Tripti Nair
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Carmen M. Ramos
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Athena Alcala
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Daniel Hicks
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Maxim Averbukh
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Naibedya Dutta
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Darius Moaddeli
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Cynthia Siebrand
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
- Current: Buck Institute for Research on Aging, Novato, CA, 94945, USA
| | - Mattias de los Rios Rogers
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, CA 90095, United States
| | - Arushi Sahay
- Department of Cell & Molecular Biology, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Sean P. Curran
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Peter J. Mullen
- Department of Molecular Microbiology and Immunology, Keck School of Medicine, University of Southern California, Los Angeles, CA 90089, United States
| | | | - Gilberto Garcia
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
| | - Ryo Higuchi-Sanabria
- Leonard Davis School of Gerontology, University of Southern California, Los Angeles, CA 90089, United States
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6
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Chen F, Wang B, Sun X, Wang Y, Wang R, Li K. Ergothioneine improves cognitive function by ameliorating mitochondrial damage and decreasing neuroinflammation in a D-galactose-induced aging model. Food Funct 2024; 15:11686-11696. [PMID: 39530768 DOI: 10.1039/d4fo02321h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2024]
Abstract
Ergothioneine (EGT) is a sulfur-containing amino acid with strong antioxidant activity. In this study, a D-galactose induced mouse aging model was used to investigate the anti-aging effects of EGT. EGT intervention could significantly improve the recognition memory of aging mice. Additionally, it improved the D-galactose induced decrease in the number of neurones, enhanced the levels of cAMP and BDNF in the brain, and increased the density and expression of PSD95 in aging mice. Meanwhile, EGT could attenuate oxidative stress by reducing the content of MDA and enhancing T-SOD activity via the Nrf2/HO-1 pathway. In addition, EGT could alleviate mitochondrial function by regulating the AMPK/SIRT1/PGC-1α pathway, which in turn attenuated D-galactose induced hippocampal neuronal injury and improved the learning and memory abilities in mice. This study provides a potential dietary strategy to improve age-induced memory impairment.
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Affiliation(s)
- Fangyang Chen
- College of Food Science and Technology, Key Laboratory of Environment Correlative Food Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Botao Wang
- Bloomage Biotechnology Co., Ltd, Jinan 250000, China.
| | - Xin Sun
- Bloomage Biotechnology Co., Ltd, Jinan 250000, China.
| | - Yage Wang
- College of Food Science and Technology, Key Laboratory of Environment Correlative Food Science, Huazhong Agricultural University, Wuhan 430070, China.
| | - Ruiyan Wang
- Bloomage Biotechnology Co., Ltd, Jinan 250000, China.
| | - Kaikai Li
- College of Food Science and Technology, Key Laboratory of Environment Correlative Food Science, Huazhong Agricultural University, Wuhan 430070, China.
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7
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Hetz C, Dillin A. Central role of the ER proteostasis network in healthy aging. Trends Cell Biol 2024:S0962-8924(24)00209-5. [PMID: 39547881 DOI: 10.1016/j.tcb.2024.10.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2024] [Revised: 10/15/2024] [Accepted: 10/16/2024] [Indexed: 11/17/2024]
Abstract
Aging trajectories vary among individuals, characterized by progressive functional decline, often leading to disease states. One of the central hallmarks of aging is the deterioration of proteostasis, where the function of the endoplasmic reticulum (ER) is dramatically affected. ER stress is monitored and adjusted by the unfolded protein response (UPR); a signaling pathway that mediates adaptive processes to restore proteostasis. Studies in multiple model organisms (yeast, worms, flies, and mice) in addition to human tissue indicates that adaptive UPR signaling contributes to healthy aging. Strategies to improve ER proteostasis using small molecules and gene therapy reduce the decline of organ function during normal aging in mammals. This article reviews recent advances in understanding the significance of the ER proteostasis network to normal aging and its relationship with other hallmarks of aging such as senescence.
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Affiliation(s)
- Claudio Hetz
- The Buck Institute for Research in Aging, Novato, CA 94945, USA; Center for Geroscience, Brain Health, and Metabolism (GERO), Santiago, Chile; Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences (ICBM), University of Chile, Santiago, Chile.
| | - Andrew Dillin
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA; Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA.
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8
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Białek W, Hryniewicz-Jankowska A, Czechowicz P, Sławski J, Collawn JF, Czogalla A, Bartoszewski R. The lipid side of unfolded protein response. Biochim Biophys Acta Mol Cell Biol Lipids 2024; 1869:159515. [PMID: 38844203 DOI: 10.1016/j.bbalip.2024.159515] [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: 02/28/2024] [Revised: 04/16/2024] [Accepted: 05/31/2024] [Indexed: 06/12/2024]
Abstract
Although our current knowledge of the molecular crosstalk between the ER stress, the unfolded protein response (UPR), and lipid homeostasis remains limited, there is increasing evidence that dysregulation of either protein or lipid homeostasis profoundly affects the other. Most research regarding UPR signaling in human diseases has focused on the causes and consequences of disrupted protein folding. The UPR itself consists of very complex pathways that function to not only maintain protein homeostasis, but just as importantly, modulate lipid biogenesis to allow the ER to adjust and promote cell survival. Lipid dysregulation is known to activate many aspects of the UPR, but the complexity of this crosstalk remains a major research barrier. ER lipid disequilibrium and lipotoxicity are known to be important contributors to numerous human pathologies, including insulin resistance, liver disease, cardiovascular diseases, neurodegenerative diseases, and cancer. Despite their medical significance and continuous research, however, the molecular mechanisms that modulate lipid synthesis during ER stress conditions, and their impact on cell fate decisions, remain poorly understood. Here we summarize the current view on crosstalk and connections between altered lipid metabolism, ER stress, and the UPR.
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Affiliation(s)
- Wojciech Białek
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | | | - Paulina Czechowicz
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Jakub Sławski
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - James F Collawn
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, USA
| | - Aleksander Czogalla
- Department of Cytobiochemistry, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland
| | - Rafał Bartoszewski
- Department of Biophysics, Faculty of Biotechnology, University of Wroclaw, Wroclaw, Poland.
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9
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Malik Y, Kulaberoglu Y, Anver S, Javidnia S, Borland G, Rivera R, Cranwell S, Medelbekova D, Svermova T, Thomson J, Broughton S, von der Haar T, Selman C, Tullet JMA, Alic N. Disruption of tRNA biogenesis enhances proteostatic resilience, improves later-life health, and promotes longevity. PLoS Biol 2024; 22:e3002853. [PMID: 39436952 PMCID: PMC11495624 DOI: 10.1371/journal.pbio.3002853] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 09/20/2024] [Indexed: 10/25/2024] Open
Abstract
tRNAs are evolutionarily ancient molecular decoders essential for protein translation. In eukaryotes, tRNAs and other short, noncoding RNAs are transcribed by RNA polymerase (Pol) III, an enzyme that promotes ageing in yeast, worms, and flies. Here, we show that a partial reduction in Pol III activity specifically disrupts tRNA levels. This effect is conserved across worms, flies, and mice, where computational models indicate that it impacts mRNA decoding. In all 3 species, reduced Pol III activity increases proteostatic resilience. In worms, it activates the unfolded protein response (UPR) and direct disruption of tRNA metabolism is sufficient to recapitulate this. In flies, decreasing Pol III's transcriptional initiation on tRNA genes by a loss-of-function in the TFIIIC transcription factor robustly extends lifespan, improves proteostatic resilience and recapitulates the broad-spectrum benefits to late-life health seen following partial Pol III inhibition. We provide evidence that a partial reduction in Pol III activity impacts translation, quantitatively or qualitatively, in both worms and flies, indicating a potential mode of action. Our work demonstrates a conserved and previously unappreciated role of tRNAs in animal ageing.
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Affiliation(s)
- Yasir Malik
- School of Biosciences, University of Kent, Canterbury, United Kingdom
| | - Yavuz Kulaberoglu
- Institute of Healthy Ageing, Research Department of Genetics Evolution and Environment, University College London, London, United Kingdom
| | - Shajahan Anver
- Institute of Healthy Ageing, Research Department of Genetics Evolution and Environment, University College London, London, United Kingdom
| | - Sara Javidnia
- Institute of Healthy Ageing, Research Department of Genetics Evolution and Environment, University College London, London, United Kingdom
| | - Gillian Borland
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Rene Rivera
- School of Biosciences, University of Kent, Canterbury, United Kingdom
| | - Stephen Cranwell
- Institute of Healthy Ageing, Research Department of Genetics Evolution and Environment, University College London, London, United Kingdom
| | - Danel Medelbekova
- Institute of Healthy Ageing, Research Department of Genetics Evolution and Environment, University College London, London, United Kingdom
| | - Tatiana Svermova
- Institute of Healthy Ageing, Research Department of Genetics Evolution and Environment, University College London, London, United Kingdom
| | - Jackie Thomson
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | - Susan Broughton
- Division of Biomedical and Life Sciences, Faculty of Health and Medicine, Lancaster University, Lancaster, United Kingdom
| | | | - Colin Selman
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, United Kingdom
| | | | - Nazif Alic
- Institute of Healthy Ageing, Research Department of Genetics Evolution and Environment, University College London, London, United Kingdom
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10
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Yang H, Ou-Yang K, He Y, Wang X, Wang L, Yang Q, Li D, Li L. Nitrite induces hepatic glucose and lipid metabolism disorders in zebrafish through mitochondrial dysfunction and ERs response. AQUATIC TOXICOLOGY (AMSTERDAM, NETHERLANDS) 2024; 273:107015. [PMID: 38996482 DOI: 10.1016/j.aquatox.2024.107015] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/08/2024] [Revised: 06/21/2024] [Accepted: 06/27/2024] [Indexed: 07/14/2024]
Abstract
Nitrite, a highly toxic environmental contaminant, induces various physiological toxicities in aquatic animals. Herein, we investigate the in vivo effects of nitrite exposure at concentrations of 0, 0.2, 2, and 20 mg/L on glucose and lipid metabolism in zebrafish. Our results showed that exposure to nitrite induced mitochondrial oxidative stress in zebrafish liver and ZFL cells, which were evidenced by increased levels of malondialdehyde (MDA) and reactive oxygen species (ROS) as well as decreased mitochondrial membrane potential (MMP) and adenosine triphosphate (ATP). Changes in these oxidative stress markers were accompanied by alterations in the expression levels of genes involved in HIF-1α pathway (hif1α and phd), which subsequently led to the upregulation of glycolysis and gluconeogenesis-related genes (gk, pklr, pdk1, pepck, g6pca, ppp1r3cb, pgm1, gys1 and gys2), resulting in disrupted glucose metabolism. Moreover, nitrite exposure activated ERs (Endoplasmic Reticulum stress) responses through upregulating of genes (atf6, ern1 and xbp1s), leading to increased expression of lipolysis genes (pparα, cpt1aa and atgl) and decreased expression of lipid synthesis genes (srebf1, srebf2, fasn, acaca, scd, hmgcra and hmgcs1). These results were also in consistent with the observed changes in glycogen, lactate and decreased total triglyceride (TG) and total cholesterol (TC) in the liver of zebrafish. Our in vitro results showed that co-treatment with Mito-TEMPO and nitrite attenuated nitrite-induced oxidative stress and improved mitochondrial function, which were indicated by the restorations of ROS, MMP, ATP production, and glucose-related gene expression recovered. Co-treatment of TUDCA and nitrite prevented nitrite-induced ERs response and which was proved by the levels of TG and TC ameliorated as well as the expression levels of lipid metabolism-related genes. In conclusion, our study suggested that nitrite exposure disrupted hepatic glucose and lipid metabolism through mitochondrial dysfunction and ERs responses. These findings contribute to the understanding of the potential hepatotoxicity for aquatic animals in the presence of ambient nitrite.
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Affiliation(s)
- Hui Yang
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Kang Ou-Yang
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Ya He
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Xinyu Wang
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Liangmou Wang
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China
| | - Qing Yang
- Institute of Hydroecology, Ministry of Water Resources & Chinese Academy of Sciences, Wuhan 430079, PR China
| | - Dapeng Li
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China; Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, PR China; Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan 430070, PR China; Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, PR China
| | - Li Li
- College of Fisheries, Huazhong Agricultural University, Wuhan 430070, PR China; Engineering Research Center of Green development for Conventional Aquatic Biological Industry in the Yangtze River Economic Belt, Ministry of Education, Wuhan 430070, PR China; Hubei Provincial Engineering Laboratory for Pond Aquaculture, Wuhan 430070, PR China; Freshwater Aquaculture Collaborative Innovation Center of Hubei Province, Wuhan 430070, PR China.
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11
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Waldherr SM, Han M, Saxton AD, Vadset TA, McMillan PJ, Wheeler JM, Liachko NF, Kraemer BC. Endoplasmic reticulum unfolded protein response transcriptional targets of XBP-1s mediate rescue from tauopathy. Commun Biol 2024; 7:903. [PMID: 39060347 PMCID: PMC11282107 DOI: 10.1038/s42003-024-06570-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2023] [Accepted: 07/08/2024] [Indexed: 07/28/2024] Open
Abstract
Pathological tau disrupts protein homeostasis (proteostasis) within neurons in Alzheimer's disease (AD) and related disorders. We previously showed constitutive activation of the endoplasmic reticulum unfolded protein response (UPRER) transcription factor XBP-1s rescues tauopathy-related proteostatic disruption in a tau transgenic Caenorhabditis elegans (C. elegans) model of human tauopathy. XBP-1s promotes clearance of pathological tau, and loss of function of the ATF-6 branch of the UPRER prevents XBP-1s rescue of tauopathy in C. elegans. We conducted transcriptomic analysis of tau transgenic and xbp-1s transgenic C. elegans and found 116 putative target genes significantly upregulated by constitutively active XBP-1s. Among these were five candidate XBP-1s target genes with human orthologs and a previously known association with ATF6 (csp-1, dnj-28, hsp-4, ckb-2, and lipl-3). We examined the functional involvement of these targets in XBP-1s-mediated tauopathy suppression and found loss of function in any one of these genes completely disrupts XBP-1s suppression of tauopathy. Further, we demonstrate upregulation of HSP-4, C. elegans BiP, partially rescues tauopathy independent of other changes in the transcriptional network. Understanding how the UPRER modulates pathological tau accumulation will inform neurodegenerative disease mechanisms and direct further study in mammalian systems with the long-term goal of identifying therapeutic targets in human tauopathies.
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Affiliation(s)
- Sarah M Waldherr
- Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, 98108, USA
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington, Seattle, WA, 98104, USA
| | - Marina Han
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington, Seattle, WA, 98104, USA
- Graduate Program in Neuroscience, University of Washington, Seattle, WA, 98195, USA
| | - Aleen D Saxton
- Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, 98108, USA
| | - Taylor A Vadset
- Graduate Program in Neuroscience, University of Washington, Seattle, WA, 98195, USA
| | - Pamela J McMillan
- Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, 98195, USA
| | - Jeanna M Wheeler
- Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, 98108, USA
| | - Nicole F Liachko
- Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, 98108, USA
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington, Seattle, WA, 98104, USA
- Graduate Program in Neuroscience, University of Washington, Seattle, WA, 98195, USA
| | - Brian C Kraemer
- Geriatrics Research Education and Clinical Center, Veterans Affairs Puget Sound Health Care System, Seattle, WA, 98108, USA.
- Division of Gerontology and Geriatric Medicine, Department of Medicine, University of Washington, Seattle, WA, 98104, USA.
- Graduate Program in Neuroscience, University of Washington, Seattle, WA, 98195, USA.
- Department of Psychiatry and Behavioral Sciences, University of Washington, Seattle, WA, 98195, USA.
- Department of Pathology, University of Washington, Seattle, WA, 98195, USA.
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12
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Cole-Skinner B, Andre NM, Blankenheim Z, Root KM, Jafri K, Simmons GE. Oleate alters the immune response in non-small cell lung adenocarcinoma through regulation of HMGB1 release. Front Cell Dev Biol 2024; 12:1348707. [PMID: 39100092 PMCID: PMC11294209 DOI: 10.3389/fcell.2024.1348707] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Accepted: 07/10/2024] [Indexed: 08/06/2024] Open
Abstract
Background: Cancer cell evasion of the immune response is critical to cancer development and metastases. Clinicians' ability to kickstart the immune system to target these rogue cells is an ever-growing area of research and medicine. This study delved into the relationship between lipid metabolism, High Mobility Group Box 1 protein (HMGB1)-a pro-inflammatory damage-associated molecular pattern protein-and immune regulation within non-small cell lung adenocarcinoma (NSCLC). Method: To address this question, we used a combination of proteomics, molecular biology, and bioinformatic techniques to investigate the relationship between fatty acids and immune signals within NSCLC. Results: We found that the expression of stearoyl CoA desaturase 1 (SCD1) was decreased in NSCLC tumors compared to normal tissues. This emphasized the critical role of lipid metabolism in tumor progression. Interestingly, monounsaturated fatty acid (MUFA) availability affected the expression of programmed death ligand-1 (PD-L1), a pivotal immune checkpoint target in lung cancer cells and immune cells, as well as HMGB1, suggesting a novel approach to modulating the immune response. This study uncovered a complex interplay between SCD1, PD-L1, and HMGB1, influencing the immunological sensitivity of tumors. Conclusion: Our work underscores the critical importance of understanding the intricate relationships between lipid metabolism and immune modulation to develop more effective NSCLC treatments and personalized therapies. As we continue to explore these connections, we hope to contribute significantly to the ever-evolving field of cancer research, improving patient outcomes and advancing precision medicine in NSCLC.
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Affiliation(s)
- Breanna Cole-Skinner
- Department of Molecular Microbiology and Immunology, University of Missouri, Columbia, United States
| | - Nicole M. Andre
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, United States
| | - Zachary Blankenheim
- Department of Biomedical Sciences, School of Medicine, University of Minnesota, Duluth, United States
| | - Kate M. Root
- Department of Biomedical Sciences, School of Medicine, University of Minnesota, Duluth, United States
| | - Kisa Jafri
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, United States
| | - Glenn E. Simmons
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca, United States
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13
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Jamerson LE, Bradshaw PC. The Roles of White Adipose Tissue and Liver NADPH in Dietary Restriction-Induced Longevity. Antioxidants (Basel) 2024; 13:820. [PMID: 39061889 PMCID: PMC11273496 DOI: 10.3390/antiox13070820] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 07/01/2024] [Accepted: 07/03/2024] [Indexed: 07/28/2024] Open
Abstract
Dietary restriction (DR) protocols frequently employ intermittent fasting. Following a period of fasting, meal consumption increases lipogenic gene expression, including that of NADPH-generating enzymes that fuel lipogenesis in white adipose tissue (WAT) through the induction of transcriptional regulators SREBP-1c and CHREBP. SREBP-1c knockout mice, unlike controls, did not show an extended lifespan on the DR diet. WAT cytoplasmic NADPH is generated by both malic enzyme 1 (ME1) and the pentose phosphate pathway (PPP), while liver cytoplasmic NADPH is primarily synthesized by folate cycle enzymes provided one-carbon units through serine catabolism. During the daily fasting period of the DR diet, fatty acids are released from WAT and are transported to peripheral tissues, where they are used for beta-oxidation and for phospholipid and lipid droplet synthesis, where monounsaturated fatty acids (MUFAs) may activate Nrf1 and inhibit ferroptosis to promote longevity. Decreased WAT NADPH from PPP gene knockout stimulated the browning of WAT and protected from a high-fat diet, while high levels of NADPH-generating enzymes in WAT and macrophages are linked to obesity. But oscillations in WAT [NADPH]/[NADP+] from feeding and fasting cycles may play an important role in maintaining metabolic plasticity to drive longevity. Studies measuring the WAT malate/pyruvate as a proxy for the cytoplasmic [NADPH]/[NADP+], as well as studies using fluorescent biosensors expressed in the WAT of animal models to monitor the changes in cytoplasmic [NADPH]/[NADP+], are needed during ad libitum and DR diets to determine the changes that are associated with longevity.
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Affiliation(s)
| | - Patrick C. Bradshaw
- Department of Biomedical Sciences, James H. Quillen College of Medicine, East Tennessee State University, Johnson City, TN 37614, USA
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14
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Wang L, Li P, Zheng F, Zhu Z, Bai F, Gao R. Collagen peptides from sturgeon swim bladder prolong the lifespan and healthspan in Caenorhabditis elegans. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2024; 104:5244-5251. [PMID: 38308527 DOI: 10.1002/jsfa.13348] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/26/2024] [Accepted: 01/30/2024] [Indexed: 02/04/2024]
Abstract
BACKGROUND Sturgeon is a popular aquaculture species in many countries. Its swim bladder is rich in collagen but has not yet been exploited scientifically. RESULTS Collagen peptides (CPs) prepared from sturgeon swim bladder by trypsinolysis had an average molecular weight of 528.5 Da and consisted of 407 peptides, 16.1% of the content of which was GFPGADGSAGPK. The CPs at 25 mg mL-1 extended the lifespan of Caenorhabditis elegans by 22.6%, which was significantly higher than the extension achieved by other hydrolysis methods and source materials. They also improved fitness-related traits (body size, motor capacity, oxidative stress, cell apoptosis, and epidermal barrier function), indicating prolonged healthspan. Transcriptome analysis showed that the effect was mediated by the mitogen-activated protein kinase pathway, which enhanced stress resistance, the insulin/IGF-1 pathway, which inhibited protein aggregation, and the NHR-80/FAT-6 pathway, which regulated lipid metabolism. CONCLUSION Collagen peptides from sturgeon swim bladder by trypsinolysis prolonged the lifespan and healthspan in C. elegans, and might be promising anti-aging agents. © 2024 Society of Chemical Industry.
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Affiliation(s)
- Lin Wang
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Peiyu Li
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
| | - Fuping Zheng
- Beijing Laboratory for Food Quality and Safety, Beijing Technology and Business University, Beijing, China
| | - Zhiling Zhu
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
- Zhenjiang Eslatide Biotechnology Co., Ltd., Zhenjiang, China
| | - Fan Bai
- Quzhou Xunlong Aquatic Products Sci-tech Development Co., Ltd., Quzhou, China
| | - Ruichang Gao
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang, China
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15
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Kettel P, Karagöz GE. Endoplasmic reticulum: Monitoring and maintaining protein and membrane homeostasis in the endoplasmic reticulum by the unfolded protein response. Int J Biochem Cell Biol 2024; 172:106598. [PMID: 38768891 DOI: 10.1016/j.biocel.2024.106598] [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: 03/18/2024] [Revised: 05/01/2024] [Accepted: 05/14/2024] [Indexed: 05/22/2024]
Abstract
The endoplasmic reticulum (ER) regulates essential cellular processes, including protein folding, lipid synthesis, and calcium homeostasis. The ER homeostasis is maintained by a conserved set of signaling cascades called the Unfolded Protein Response (UPR). How the UPR senses perturbations in ER homeostasis has been the subject of active research for decades. In metazoans, the UPR consists of three ER-membrane embedded sensors: IRE1, PERK and ATF6. These sensors detect the accumulation of misfolded proteins in the ER lumen and adjust protein folding capacity according to cellular needs. Early work revealed that the ER-resident chaperone BiP binds to all three UPR sensors in higher eukaryotes and BiP binding was suggested to regulate their activity. More recent data have shown that in higher eukaryotes the interaction of the UPR sensors with a complex network of chaperones and misfolded proteins modulates their activation and deactivation dynamics. Furthermore, emerging evidence suggests that the UPR monitors ER membrane integrity beyond protein folding defects. However, the mechanistic and structural basis of UPR activation by proteotoxic and lipid bilayer stress in higher eukaryotes remains only partially understood. Here, we review the current understanding of novel protein interaction networks and the contribution of the lipid membrane environment to UPR activation.
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Affiliation(s)
- Paulina Kettel
- Max Perutz Laboratories Vienna, Vienna BioCenter, Vienna, Austria; Vienna BioCenter PhD Program, Doctoral School of the University of Vienna and Medical University of Vienna, Vienna, Austria
| | - G Elif Karagöz
- Max Perutz Laboratories Vienna, Vienna BioCenter, Vienna, Austria; Medical University of Vienna, Vienna, Austria.
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16
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Li M, Shou H, Martínez Corrales G, Svermova T, Franco AV, Alic N. Xbp1 targets canonical UPR ER and non-canonical pathways in separate tissues to promote longevity. iScience 2024; 27:109962. [PMID: 38832022 PMCID: PMC11144730 DOI: 10.1016/j.isci.2024.109962] [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: 11/14/2023] [Revised: 01/19/2024] [Accepted: 05/09/2024] [Indexed: 06/05/2024] Open
Abstract
Transcription factors can reprogram gene expression to promote longevity. Here, we investigate the role of Drosophila Xbp1. Xbp1 is activated by splicing of its primary transcript, Xbp1u, to generate Xbp1s, a key activator of the endoplasmic reticulum unfolded protein response (UPRER). We show that Xbp1s induces the conical UPRER in the gut, promoting longevity from the resident stem cells. In contrast, in the fat body, Xbp1s does not appear to trigger UPRER but alters metabolic gene expression and is still able to extend lifespan. In the fat body, Xbp1s and dFOXO impinge on the same target genes, including the PGC-1α orthologue Srl, and dfoxo requires Xbp1 to extend lifespan. Interestingly, unspliceable version of the Xbp1 mRNA, Xbp1u can also extend lifespan, hinting at roles in longevity for the poorly characterized Xbp1u transcription factor. These findings reveal the diverse functions of Xbp1 in longevity in the fruit fly.
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Affiliation(s)
- Mengjia Li
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London WC1E 6BT, UK
| | - Haocheng Shou
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London WC1E 6BT, UK
| | - Guillermo Martínez Corrales
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London WC1E 6BT, UK
| | - Tatiana Svermova
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London WC1E 6BT, UK
| | - Alessandra Vieira Franco
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London WC1E 6BT, UK
| | - Nazif Alic
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London WC1E 6BT, UK
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17
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Metcalf MG, Monshietehadi S, Sahay A, Durieux J, Frakes AE, Velichkovska M, Mena C, Farinas A, Sanchez M, Dillin A. Cell non-autonomous control of autophagy and metabolism by glial cells. iScience 2024; 27:109354. [PMID: 38500817 PMCID: PMC10946330 DOI: 10.1016/j.isci.2024.109354] [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: 05/16/2022] [Revised: 11/01/2023] [Accepted: 02/23/2024] [Indexed: 03/20/2024] Open
Abstract
Glia are the protectors of the nervous system, providing neurons with support and protection from cytotoxic insults. We previously discovered that four astrocyte-like glia can regulate organismal proteostasis and longevity in C. elegans. Expression of the UPRER transcription factor, XBP-1s, in these glia increases stress resistance, and longevity, and activates the UPRER in intestinal cells via neuropeptides. Autophagy, a key regulator of metabolism and aging, has been described as a cell autonomous process. Surprisingly, we find that glial XBP-1s enhances proteostasis and longevity by cell non-autonomously reprogramming organismal lipid metabolism and activating autophagy. Glial XBP-1s regulates the activation of another transcription factor, HLH-30/TFEB, in the intestine. HLH-30 activates intestinal autophagy, increases intestinal lipid catabolism, and upregulates a robust transcriptional program. Our study reveals a novel role for glia in regulating peripheral lipid metabolism, autophagy, and organellar health through peripheral activation of HLH-30 and autophagy.
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Affiliation(s)
- Melissa G. Metcalf
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Samira Monshietehadi
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Arushi Sahay
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Jenni Durieux
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Ashley E. Frakes
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Martina Velichkovska
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Cesar Mena
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Amelia Farinas
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Melissa Sanchez
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
| | - Andrew Dillin
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA 94720, USA
- Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA 94720, USA
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18
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Shreya S, Alam MJ, Anupriya, Jaiswal S, Rani V, Jain BP. Lipotoxicity, ER Stress, and Cardiovascular Disease: Current Understanding and Future Directions. Cardiovasc Hematol Agents Med Chem 2024; 22:319-335. [PMID: 37859305 DOI: 10.2174/0118715257262366230928051902] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 08/18/2023] [Accepted: 08/24/2023] [Indexed: 10/21/2023]
Abstract
The endoplasmic reticulum (ER) is a sub-cellular organelle that is responsible for the correct folding of proteins, lipid biosynthesis, calcium storage, and various post-translational modifications. In the disturbance of ER functioning, unfolded or misfolded proteins accumulate inside the ER lumen and initiate downstream signaling called unfolded protein response (UPR). The UPR signaling pathway is involved in lipolysis, triacylglycerol synthesis, lipogenesis, the mevalonate pathway, and low-density lipoprotein receptor recycling. ER stress also affects lipid metabolism by changing the levels of enzymes that are involved in the synthesis or modifications of lipids and causing lipotoxicity. Lipid metabolism and cardiac diseases are in close association as the deregulation of lipid metabolism leads to the development of various cardiovascular diseases (CVDs). Several studies have suggested that lipotoxicity is one of the important factors for cardiovascular disorders. In this review, we will discuss how ER stress affects lipid metabolism and their interplay in the development of cardiovascular disorders. Further, the current therapeutics available to target ER stress and lipid metabolism in various CVDs will be summarized.
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Affiliation(s)
- Smriti Shreya
- Gene Expression and Signaling lab, Department of Zoology, Mahatma Gandhi Central University, Motihari, Bihar, India
| | - Md Jahangir Alam
- Translational Research Unit of Excellence, CSIR-Indian Institute of Chemical Biology, Kolkata, West Bengal, India
| | - Anupriya
- Gene Expression and Signaling lab, Department of Zoology, Mahatma Gandhi Central University, Motihari, Bihar, India
| | - Saumya Jaiswal
- Gene Expression and Signaling lab, Department of Zoology, Mahatma Gandhi Central University, Motihari, Bihar, India
| | - Vibha Rani
- Department of Biotechnology, Jaypee Institute of Information Technology, Noida, UP, India
| | - Buddhi Prakash Jain
- Gene Expression and Signaling lab, Department of Zoology, Mahatma Gandhi Central University, Motihari, Bihar, India
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19
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Oleson BJ, Bhattrai J, Zalubas SL, Kravchenko TR, Ji Y, Jiang EL, Lu CC, Madden CR, Coffman JG, Bazopoulou D, Jones JW, Jakob U. Early life changes in histone landscape protect against age-associated amyloid toxicities through HSF-1-dependent regulation of lipid metabolism. NATURE AGING 2024; 4:48-61. [PMID: 38057386 PMCID: PMC11481004 DOI: 10.1038/s43587-023-00537-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2023] [Accepted: 11/02/2023] [Indexed: 12/08/2023]
Abstract
Transient events during development can exert long-lasting effects on organismal lifespan. Here we demonstrate that exposure of Caenorhabditis elegans to reactive oxygen species during development protects against amyloid-induced proteotoxicity later in life. We show that this protection is initiated by the inactivation of the redox-sensitive H3K4me3-depositing COMPASS complex and conferred by a substantial increase in the heat-shock-independent activity of heat shock factor 1 (HSF-1), a longevity factor known to act predominantly during C. elegans development. We show that depletion of HSF-1 leads to marked rearrangements of the organismal lipid landscape and a significant decrease in mitochondrial β-oxidation and that both lipid and metabolic changes contribute to the protective effects of HSF-1 against amyloid toxicity. Together, these findings link developmental changes in the histone landscape, HSF-1 activity and lipid metabolism to protection against age-associated amyloid toxicities later in life.
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Affiliation(s)
- Bryndon J Oleson
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Janakraj Bhattrai
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Sarah L Zalubas
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Tessa R Kravchenko
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Yuanyuan Ji
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD, USA
| | - Emily L Jiang
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Christine C Lu
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Ciara R Madden
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Julia G Coffman
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Daphne Bazopoulou
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
- Department of Biology, University of Crete, Heraklion, Greece
| | - Jace W Jones
- Department of Pharmaceutical Sciences, University of Maryland School of Pharmacy, Baltimore, MD, USA
| | - Ursula Jakob
- Department of Molecular, Cellular, and Developmental Biology, University of Michigan, Ann Arbor, MI, USA.
- Department of Biological Chemistry, University of Michigan Medical School, Ann Arbor, MI, USA.
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20
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Boone M, Zappa F. Signaling plasticity in the integrated stress response. Front Cell Dev Biol 2023; 11:1271141. [PMID: 38143923 PMCID: PMC10740175 DOI: 10.3389/fcell.2023.1271141] [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: 08/01/2023] [Accepted: 11/29/2023] [Indexed: 12/26/2023] Open
Abstract
The Integrated Stress Response (ISR) is an essential homeostatic signaling network that controls the cell's biosynthetic capacity. Four ISR sensor kinases detect multiple stressors and relay this information to downstream effectors by phosphorylating a common node: the alpha subunit of the eukaryotic initiation factor eIF2. As a result, general protein synthesis is repressed while select transcripts are preferentially translated, thus remodeling the proteome and transcriptome. Mounting evidence supports a view of the ISR as a dynamic signaling network with multiple modulators and feedback regulatory features that vary across cell and tissue types. Here, we discuss updated views on ISR sensor kinase mechanisms, how the subcellular localization of ISR components impacts signaling, and highlight ISR signaling differences across cells and tissues. Finally, we consider crosstalk between the ISR and other signaling pathways as a determinant of cell health.
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21
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Cole-Skinner B, Andre NM, Blankenheim Z, Root K, Simmons GE. Unsaturated fatty acid alters the immune response in non-small cell lung adenocarcinoma through regulation of HMGB1 trafficking. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.11.08.566231. [PMID: 37986958 PMCID: PMC10659279 DOI: 10.1101/2023.11.08.566231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Cancer cell evasion of the immune response is critical to cancer development and metastases. The ability of clinicians to kickstart the immune system to target these rogue cells is an ever-growing area of research and medicine. In this study, we delved into the relationship between lipid metabolism, High Mobility Group Box 1 protein (HMGB1), and immune regulation within non-small cell lung adenocarcinoma (NSCLC), shedding light on novel therapeutic avenues and potential personalized approaches for patients. We found that the expression of stearoyl CoA desaturase 1 (SCD1) was decreased in NSCLC tumors compared to normal tissues. This emphasized the critical role of lipid metabolism in tumor progression. Interestingly, monounsaturated fatty acid (MUFA) availability impacted the expression of programmed death receptor ligand -1 (PD-L1), a pivotal immune checkpoint target in lung cancer cells and immune cells, suggesting a novel approach to modulating the immune response. This study uncovered a complex interplay between HMGB1, SCD1, and PD-L1, influencing the immunological sensitivity of tumors. Our work underscores the importance of understanding the intricate relationships between lipid metabolism and immune modulation to develop more effective NSCLC treatments and personalized therapies. As we continue to explore these connections, we hope to contribute to the ever-evolving field of cancer research, improving patient outcomes and advancing precision medicine in NSCLC.
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Affiliation(s)
- Breanna Cole-Skinner
- Department of Molecular Microbiology and Immunology, University of Missouri, Columbia
| | - Nicole M. Andre
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca
| | - Zachary Blankenheim
- Department of Biomedical Sciences, University of Minnesota School of Medicine, Duluth
| | - Kate Root
- Department of Biomedical Sciences, University of Minnesota School of Medicine, Duluth
| | - Glenn E. Simmons
- Department of Biomedical Sciences, College of Veterinary Medicine, Cornell University, Ithaca
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22
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Shioda T, Takahashi I, Ikenaka K, Fujita N, Kanki T, Oka T, Mochizuki H, Antebi A, Yoshimori T, Nakamura S. Neuronal MML-1/MXL-2 regulates systemic aging via glutamate transporter and cell nonautonomous autophagic and peroxidase activity. Proc Natl Acad Sci U S A 2023; 120:e2221553120. [PMID: 37722055 PMCID: PMC10523562 DOI: 10.1073/pnas.2221553120] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 08/04/2023] [Indexed: 09/20/2023] Open
Abstract
Accumulating evidence has demonstrated the presence of intertissue-communication regulating systemic aging, but the underlying molecular network has not been fully explored. We and others previously showed that two basic helix-loop-helix transcription factors, MML-1 and HLH-30, are required for lifespan extension in several longevity paradigms, including germlineless Caenorhabditis elegans. However, it is unknown what tissues these factors target to promote longevity. Here, using tissue-specific knockdown experiments, we found that MML-1 and its heterodimer partners MXL-2 and HLH-30 act primarily in neurons to extend longevity in germlineless animals. Interestingly, however, the downstream cascades of MML-1 in neurons were distinct from those of HLH-30. Neuronal RNA interference (RNAi)-based transcriptome analysis revealed that the glutamate transporter GLT-5 is a downstream target of MML-1 but not HLH-30. Furthermore, the MML-1-GTL-5 axis in neurons is critical to prevent an age-dependent collapse of proteostasis and increased oxidative stress through autophagy and peroxidase MLT-7, respectively, in long-lived animals. Collectively, our study revealed that systemic aging is regulated by a molecular network involving neuronal MML-1 function in both neural and peripheral tissues.
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Affiliation(s)
- Tatsuya Shioda
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Osaka565-0871, Japan
| | - Ittetsu Takahashi
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Osaka565-0871, Japan
| | - Kensuke Ikenaka
- Department of Neurology, Graduate School of Medicine, Osaka University, Osaka565-0871, Japan
| | - Naonobu Fujita
- Cell Biology Center, Institute of Innovative Research, Tokyo Institute of Technology, Yokohama226-8503, Japan
- Graduate School of Life Science and Technology, Tokyo Institute of Technology, Yokohama226-8503, Japan
| | - Tomotake Kanki
- Department of Cellular Physiology, Graduate School of Medical and Dental Sciences, Niigata University, Niigata951-8510, Japan
| | - Toshihiko Oka
- Department of Life Science, Rikkyo University, Tokyo171-8501, Japan
| | - Hideki Mochizuki
- Department of Neurology, Graduate School of Medicine, Osaka University, Osaka565-0871, Japan
| | - Adam Antebi
- Department of Molecular Genetics of Ageing, Max Planck Institute for Biology of Ageing, Cologne50931, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases, University of Cologne, Cologne50931, Germany
| | - Tamotsu Yoshimori
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Osaka565-0871, Japan
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka565-0871, Japan
- Integrated Frontier Research for Medical Science Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Osaka565-0871, Japan
| | - Shuhei Nakamura
- Laboratory of Intracellular Membrane Dynamics, Graduate School of Frontier Biosciences, Osaka University, Osaka565-0871, Japan
- Department of Genetics, Graduate School of Medicine, Osaka University, Osaka565-0871, Japan
- Institute for Advanced Co-Creation Studies, Osaka University, Osaka565-0871, Japan
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23
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Mingjie Y, Yair A, Tali G. The RIDD activity of C. elegans IRE1 modifies neuroendocrine signaling in anticipation of environment stress to ensure survival. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.10.552841. [PMID: 37609168 PMCID: PMC10441387 DOI: 10.1101/2023.08.10.552841] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
Xbp1 splicing and regulated IRE1-dependent RNA decay (RIDD) are two RNase activities of the ER stress sensor IRE1. While Xbp1 splicing has important roles in stress responses and animal physiology, the physiological role(s) of RIDD remain enigmatic. Genetic evidence in C. elegans connects XBP1-independent IRE1 activity to organismal stress adaptation, but whether this is via RIDD, and what are the targets is yet unknown. We show that cytosolic kinase/RNase domain of C. elegans IRE1 is indeed capable of RIDD in human cells, and that sensory neurons use RIDD to signal environmental stress, by degrading mRNA of TGFβ-like growth factor DAF-7. daf-7 was degraded in human cells by both human and worm IRE1 RNAse activity with same efficiency and specificity as Blos1, confirming daf-7 as RIDD substrate. Surprisingly, daf-7 degradation in vivo was triggered by concentrations of ER stressor tunicamycin too low for xbp-1 splicing. Decrease in DAF-7 normally signals food limitation and harsh environment, triggering adaptive changes to promote population survival. Because C. elegans is a bacteriovore, and tunicamycin, like other common ER stressors, is an antibiotic secreted by Streptomyces spp., we asked whether daf-7 degradation by RIDD could signal pending food deprivation. Indeed, pre-emptive tunicamycin exposure increased survival of C. elegans populations under food limiting/high temperature stress, and this protection was abrogated by overexpression of DAF-7. Thus, C. elegans uses stress-inducing metabolites in its environment as danger signals, and employs IRE1's RIDD activity to modulate the neuroendocrine signaling for survival of upcoming environmental challenge.
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Affiliation(s)
- Ying Mingjie
- Department of Biology, Drexel University, Philadelphia, PA
- Department of Pathology and Lab Medicine, The Children's Hospital of Philadelphia and the University of Pennsylvania, Philadelphia, PA, USA
| | - Argon Yair
- Department of Pathology and Lab Medicine, The Children's Hospital of Philadelphia and the University of Pennsylvania, Philadelphia, PA, USA
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24
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Garcia G, Zhang H, Moreno S, Tsui CK, Webster BM, Higuchi-Sanabria R, Dillin A. Lipid homeostasis is essential for a maximal ER stress response. eLife 2023; 12:e83884. [PMID: 37489956 PMCID: PMC10368420 DOI: 10.7554/elife.83884] [Citation(s) in RCA: 18] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2022] [Accepted: 05/08/2023] [Indexed: 07/26/2023] Open
Abstract
Changes in lipid metabolism are associated with aging and age-related diseases, including proteopathies. The endoplasmic reticulum (ER) is uniquely a major hub for protein and lipid synthesis, making its function essential for both protein and lipid homeostasis. However, it is less clear how lipid metabolism and protein quality may impact each other. Here, we identified let-767, a putative hydroxysteroid dehydrogenase in Caenorhabditis elegans, as an essential gene for both lipid and ER protein homeostasis. Knockdown of let-767 reduces lipid stores, alters ER morphology in a lipid-dependent manner, and blocks induction of the Unfolded Protein Response of the ER (UPRER). Interestingly, a global reduction in lipogenic pathways restores UPRER induction in animals with reduced let-767. Specifically, we find that supplementation of 3-oxoacyl, the predicted metabolite directly upstream of let-767, is sufficient to block induction of the UPRER. This study highlights a novel interaction through which changes in lipid metabolism can alter a cell's response to protein-induced stress.
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Affiliation(s)
- Gilberto Garcia
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, University of California, BerkeleyBerkeleyUnited States
- Leonard Davis School of Gerontology, University of Southern CaliforniaLos AngelesUnited States
| | - Hanlin Zhang
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, University of California, BerkeleyBerkeleyUnited States
| | - Sophia Moreno
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, University of California, BerkeleyBerkeleyUnited States
| | - C Kimberly Tsui
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, University of California, BerkeleyBerkeleyUnited States
| | - Brant Michael Webster
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, University of California, BerkeleyBerkeleyUnited States
| | - Ryo Higuchi-Sanabria
- Leonard Davis School of Gerontology, University of Southern CaliforniaLos AngelesUnited States
| | - Andrew Dillin
- Department of Molecular & Cellular Biology, Howard Hughes Medical Institute, University of California, BerkeleyBerkeleyUnited States
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25
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van Oosten-Hawle P. Exploiting inter-tissue stress signaling mechanisms to preserve organismal proteostasis during aging. Front Physiol 2023; 14:1228490. [PMID: 37469564 PMCID: PMC10352849 DOI: 10.3389/fphys.2023.1228490] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 06/26/2023] [Indexed: 07/21/2023] Open
Abstract
Aging results in a decline of cellular proteostasis capacity which culminates in the accumulation of phototoxic material, causing the onset of age-related maladies and ultimately cell death. Mechanisms that regulate proteostasis such as cellular stress response pathways sense disturbances in the proteome. They are activated to increase the expression of protein quality control components that counteract cellular damage. Utilizing invertebrate model organisms such as Caenorhabditis elegans, it has become increasingly evident that the regulation of proteostasis and the activation of cellular stress responses is not a cell autonomous process. In animals, stress responses are orchestrated by signals coming from other tissues, including the nervous system, the intestine and the germline that have a profound impact on determining the aging process. Genetic pathways discovered in C. elegans that facilitate cell nonautonomous regulation of stress responses are providing an exciting feeding ground for new interventions. In this review I will discuss cell nonautonomous proteostasis mechanisms and their impact on aging as well as ongoing research and clinical trials that can increase organismal proteostasis to lengthen health- and lifespan.
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26
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Papsdorf K, Miklas JW, Hosseini A, Cabruja M, Morrow CS, Savini M, Yu Y, Silva-García CG, Haseley NR, Murphy LM, Yao P, de Launoit E, Dixon SJ, Snyder MP, Wang MC, Mair WB, Brunet A. Lipid droplets and peroxisomes are co-regulated to drive lifespan extension in response to mono-unsaturated fatty acids. Nat Cell Biol 2023; 25:672-684. [PMID: 37127715 PMCID: PMC10185472 DOI: 10.1038/s41556-023-01136-6] [Citation(s) in RCA: 53] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/23/2023] [Indexed: 05/03/2023]
Abstract
Dietary mono-unsaturated fatty acids (MUFAs) are linked to longevity in several species. But the mechanisms by which MUFAs extend lifespan remain unclear. Here we show that an organelle network involving lipid droplets and peroxisomes is critical for MUFA-induced longevity in Caenorhabditis elegans. MUFAs upregulate the number of lipid droplets in fat storage tissues. Increased lipid droplet number is necessary for MUFA-induced longevity and predicts remaining lifespan. Lipidomics datasets reveal that MUFAs also modify the ratio of membrane lipids and ether lipids-a signature associated with decreased lipid oxidation. In agreement with this, MUFAs decrease lipid oxidation in middle-aged individuals. Intriguingly, MUFAs upregulate not only lipid droplet number but also peroxisome number. A targeted screen identifies genes involved in the co-regulation of lipid droplets and peroxisomes, and reveals that induction of both organelles is optimal for longevity. Our study uncovers an organelle network involved in lipid homeostasis and lifespan regulation, opening new avenues for interventions to delay aging.
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Affiliation(s)
| | - Jason W Miklas
- Department of Genetics, Stanford University, Stanford, CA, USA
| | - Amir Hosseini
- Department of Genetics, Stanford University, Stanford, CA, USA
| | - Matias Cabruja
- Department of Genetics, Stanford University, Stanford, CA, USA
| | - Christopher S Morrow
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Marzia Savini
- Department of Molecular and Human Genetics, Huffington Center on Aging, Baylor College of Medicine, Houston, TX, USA
| | - Yong Yu
- Department of Molecular and Human Genetics, Huffington Center on Aging, Baylor College of Medicine, Houston, TX, USA
- State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Faculty of Medicine and Life Sciences, Xiamen University, Xiamen, China
| | - Carlos G Silva-García
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | | | | | - Pallas Yao
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | | | - Scott J Dixon
- Department of Biology, Stanford University, Stanford, CA, USA
| | | | - Meng C Wang
- Department of Molecular and Human Genetics, Huffington Center on Aging, Baylor College of Medicine, Houston, TX, USA
- Janelia Research Campus, Howard Hughes Medical Institute, Ashburn, VA, USA
| | - William B Mair
- Department of Molecular Metabolism, Harvard T. H. Chan School of Public Health, Boston, MA, USA
| | - Anne Brunet
- Department of Genetics, Stanford University, Stanford, CA, USA.
- Glenn Laboratories for the Biology of Aging, Stanford University, Stanford, CA, USA.
- Wu Tsai Institute of Neurosciences, Stanford University, Stanford, CA, USA.
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27
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Chen W, Mehlkop O, Scharn A, Nolte H, Klemm P, Henschke S, Steuernagel L, Sotelo-Hitschfeld T, Kaya E, Wunderlich CM, Langer T, Kononenko NL, Giavalisco P, Brüning JC. Nutrient-sensing AgRP neurons relay control of liver autophagy during energy deprivation. Cell Metab 2023; 35:786-806.e13. [PMID: 37075752 PMCID: PMC10173804 DOI: 10.1016/j.cmet.2023.03.019] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/23/2023] [Revised: 03/01/2023] [Accepted: 03/27/2023] [Indexed: 04/21/2023]
Abstract
Autophagy represents a key regulator of aging and metabolism in sensing energy deprivation. We find that fasting in mice activates autophagy in the liver paralleled by activation of hypothalamic AgRP neurons. Optogenetic and chemogenetic activation of AgRP neurons induces autophagy, alters phosphorylation of autophagy regulators, and promotes ketogenesis. AgRP neuron-dependent induction of liver autophagy relies on NPY release in the paraventricular nucleus of the hypothalamus (PVH) via presynaptic inhibition of NPY1R-expressing neurons to activate PVHCRH neurons. Conversely, inhibiting AgRP neurons during energy deprivation abrogates induction of hepatic autophagy and rewiring of metabolism. AgRP neuron activation increases circulating corticosterone concentrations, and reduction of hepatic glucocorticoid receptor expression attenuates AgRP neuron-dependent activation of hepatic autophagy. Collectively, our study reveals a fundamental regulatory principle of liver autophagy in control of metabolic adaptation during nutrient deprivation.
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Affiliation(s)
- Weiyi Chen
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Oliver Mehlkop
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Alexandra Scharn
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Hendrik Nolte
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Strasse 9B, 50931 Cologne, Germany
| | - Paul Klemm
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Sinika Henschke
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Lukas Steuernagel
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Tamara Sotelo-Hitschfeld
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Ecem Kaya
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Claudia Maria Wunderlich
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany
| | - Thomas Langer
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Strasse 9B, 50931 Cologne, Germany
| | - Natalia L Kononenko
- Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany; Center for Physiology and Pathophysiology, Faculty of Medicine and University Hospital Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany
| | - Patrick Giavalisco
- Max Planck Institute for Biology of Ageing, Joseph-Stelzmann-Strasse 9B, 50931 Cologne, Germany
| | - Jens Claus Brüning
- Max Planck Institute for Metabolism Research, Department of Neuronal Control of Metabolism, Gleueler Str. 50, 50931 Cologne, Germany; Policlinic for Endocrinology, Diabetes, and Preventive Medicine (PEDP), University Hospital Cologne, Kerpener Str. 26, 50924 Cologne, Germany; Excellence Cluster on Cellular Stress Responses in Aging Associated Diseases (CECAD) and Center of Molecular Medicine Cologne (CMMC), University of Cologne, Joseph-Stelzmann-Str. 26, 50931 Cologne, Germany; National Center for Diabetes Research (DZD), Ingolstädter Landstrasse 1, 85764 Neuherberg, Germany.
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28
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Xiao Y, Liu F, Zhu X, Li S, Meng L, Jiang N, Yu C, Wang H, Qin Y, Hui J, Yu C, Liu Y. Dioscin integrates regulation of monosaturated fatty acid metabolism to extend the life span through XBP-1/SBP-1 dependent manner. iScience 2023; 26:106265. [PMID: 36936783 PMCID: PMC10014289 DOI: 10.1016/j.isci.2023.106265] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Revised: 12/20/2022] [Accepted: 02/17/2023] [Indexed: 03/11/2023] Open
Abstract
Delay aging, especially in healthy life extension, brought the most interest to the medical field. Searching for anti-aging drugs with relative safety profiles bring natural products in hotspot. In this study, we find that dioscin promotes the health span extension in wild-type Caenorhabditis elegans. Through the genetic screening in C. elegans, we further reveal that dioscin activates the transcription factor SBP-1/SREBP by the UPRER transcription factor XBP-1 to upregulate transcription of the Δ9 desaturase FAT-5 and FAT-7, resulting in increased monounsaturated fatty acid content which requires for healthy life span extension. Intriguingly, through tissue-specific knockdown, we find that dioscin modulates the health span by activating SBP-1 in the intestine. Unexpectedly, dietary supplementation of POA and OA rescues XBP-1, SBP-1 mutants-induced shortened life span phenotype. Considering the conservation of MUFAs metabolism, dioscin may promote health span in other species, including mammals. Our work suggests that dioscin might be a promising candidate for developing anti-aging agent.
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Affiliation(s)
- Yi Xiao
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- Institute of Life Sciences, Zunyi Medical University, Zunyi, Guizhou 563000, China
- Corresponding author
| | - Fang Liu
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- College of Basic Medicine, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Xinting Zhu
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- College of Basic Medicine, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Sanhua Li
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- Institute of Life Sciences, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Lingjie Meng
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- Institute of Life Sciences, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Nian Jiang
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- Institute of Life Sciences, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Changyan Yu
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- Institute of Life Sciences, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Haijuan Wang
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Ying Qin
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- Institute of Life Sciences, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Jing Hui
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- Institute of Life Sciences, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Chunbo Yu
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- College of Basic Medicine, Zunyi Medical University, Zunyi, Guizhou 563000, China
| | - Yun Liu
- Guizhou Provincial College-based Key Lab for Tumor Prevention and Treatment with Distinctive Medicines, Zunyi Medical University, Zunyi, Guizhou 563000, China
- Institute of Life Sciences, Zunyi Medical University, Zunyi, Guizhou 563000, China
- College of Basic Medicine, Zunyi Medical University, Zunyi, Guizhou 563000, China
- Corresponding author
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Wong SQ, Ryan CJ, Bonal DM, Mills J, Lapierre LR. Neuronal HLH-30/TFEB modulates peripheral mitochondrial fragmentation to improve thermoresistance in Caenorhabditis elegans. Aging Cell 2023; 22:e13741. [PMID: 36419219 PMCID: PMC10014052 DOI: 10.1111/acel.13741] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2022] [Revised: 09/29/2022] [Accepted: 10/31/2022] [Indexed: 11/25/2022] Open
Abstract
Transcription factor EB (TFEB) is a conserved master transcriptional activator of autophagy and lysosomal genes that modulates organismal lifespan regulation and stress resistance. As neurons can coordinate organism-wide processes, we investigated the role of neuronal TFEB in stress resistance and longevity. To this end, the Caenorhabditis elegans TFEB ortholog, hlh-30, was rescued panneuronally in hlh-30 loss of function mutants. While important in the long lifespan of daf-2 animals, neuronal HLH-30/TFEB was not sufficient to restore normal lifespan in short-lived hlh-30 mutants. However, neuronal HLH-30/TFEB rescue mediated robust improvements in the heat stress resistance of wildtype but not daf-2 animals. Notably, these mechanisms can be uncoupled, as neuronal HLH-30/TFEB requires DAF-16/FOXO to regulate longevity but not thermoresistance. Through further transcriptomics profiling and functional analysis, we discovered that neuronal HLH-30/TFEB modulates neurotransmission through the hitherto uncharacterized protein W06A11.1 by inducing peripheral mitochondrial fragmentation and organismal heat stress resistance in a non-cell autonomous manner. Taken together, this study uncovers a novel mechanism of heat stress protection mediated by neuronal HLH-30/TFEB.
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Affiliation(s)
- Shi Quan Wong
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRhode IslandUSA
| | - Catherine J. Ryan
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRhode IslandUSA
| | - Dennis M. Bonal
- Pathobiology Graduate Program, Division of Biology & MedicineBrown UniversityProvidenceRhode IslandUSA
| | - Joslyn Mills
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRhode IslandUSA
- Department of BiologyWheaton CollegeNortonMassachusettsUSA
| | - Louis R. Lapierre
- Department of Molecular Biology, Cell Biology and BiochemistryBrown UniversityProvidenceRhode IslandUSA
- Département de Chimie et BiochimieUniversité de MonctonMonctonNew BrunswickCanada
- New Brunswick Center for Precision MedicineMonctonNew BrunswickCanada
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A new AMPK isoform mediates glucose-restriction induced longevity non-cell autonomously by promoting membrane fluidity. Nat Commun 2023; 14:288. [PMID: 36653384 PMCID: PMC9849402 DOI: 10.1038/s41467-023-35952-z] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Accepted: 01/10/2023] [Indexed: 01/19/2023] Open
Abstract
Dietary restriction (DR) delays aging and the onset of age-associated diseases. However, it is yet to be determined whether and how restriction of specific nutrients promote longevity. Previous genome-wide screens isolated several Escherichia coli mutants that extended lifespan of Caenorhabditis elegans. Here, using 1H-NMR metabolite analyses and inter-species genetics, we demonstrate that E. coli mutants depleted of intracellular glucose extend C. elegans lifespans, serving as bona fide glucose-restricted (GR) diets. Unlike general DR, GR diets don't reduce the fecundity of animals, while still improving stress resistance and ameliorating neuro-degenerative pathologies of Aβ42. Interestingly, AAK-2a, a new AMPK isoform, is necessary and sufficient for GR-induced longevity. AAK-2a functions exclusively in neurons to modulate GR-mediated longevity via neuropeptide signaling. Last, we find that GR/AAK-2a prolongs longevity through PAQR-2/NHR-49/Δ9 desaturases by promoting membrane fluidity in peripheral tissues. Together, our studies identify the molecular mechanisms underlying prolonged longevity by glucose specific restriction in the context of whole animals.
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Castillo-Quan JI, Steinbaugh MJ, Fernández-Cárdenas LP, Pohl NK, Wu Z, Zhu F, Moroz N, Teixeira V, Bland MS, Lehrbach NJ, Moronetti L, Teufl M, Blackwell TK. An antisteatosis response regulated by oleic acid through lipid droplet-mediated ERAD enhancement. SCIENCE ADVANCES 2023; 9:eadc8917. [PMID: 36598980 PMCID: PMC9812393 DOI: 10.1126/sciadv.adc8917] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/06/2022] [Accepted: 11/23/2022] [Indexed: 05/19/2023]
Abstract
Although excessive lipid accumulation is a hallmark of obesity-related pathologies, some lipids are beneficial. Oleic acid (OA), the most abundant monounsaturated fatty acid (FA), promotes health and longevity. Here, we show that OA benefits Caenorhabditis elegans by activating the endoplasmic reticulum (ER)-resident transcription factor SKN-1A (Nrf1/NFE2L1) in a lipid homeostasis response. SKN-1A/Nrf1 is cleared from the ER by the ER-associated degradation (ERAD) machinery and stabilized when proteasome activity is low and canonically maintains proteasome homeostasis. Unexpectedly, OA increases nuclear SKN-1A levels independently of proteasome activity, through lipid droplet-dependent enhancement of ERAD. In turn, SKN-1A reduces steatosis by reshaping the lipid metabolism transcriptome and mediates longevity from OA provided through endogenous accumulation, reduced H3K4 trimethylation, or dietary supplementation. Our findings reveal an unexpected mechanism of FA signal transduction, as well as a lipid homeostasis pathway that provides strategies for opposing steatosis and aging, and may mediate some benefits of the OA-rich Mediterranean diet.
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Affiliation(s)
- Jorge Iván Castillo-Quan
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - Michael J. Steinbaugh
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - Laura Paulette Fernández-Cárdenas
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - Nancy K. Pohl
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - Ziyun Wu
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - Feimei Zhu
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - Natalie Moroz
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Biology Department, Emmanuel College, Boston, MA, USA
| | - Veronica Teixeira
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - Monet S. Bland
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - Nicolas J. Lehrbach
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Department of Molecular Biology, Massachusetts General Hospital, Boston, MA, USA
| | - Lorenza Moronetti
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - Magdalena Teufl
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
| | - T. Keith Blackwell
- Section on Islet Cell and Regenerative Biology, Research Division, Joslin Diabetes Center, Boston, MA, USA
- Department of Genetics, Harvard Medical School, Boston, MA, USA
- Harvard Stem Cell Institute, Harvard Medical School, Boston, MA, USA
- Corresponding author.
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Celik C, Lee SYT, Yap WS, Thibault G. Endoplasmic reticulum stress and lipids in health and diseases. Prog Lipid Res 2023; 89:101198. [PMID: 36379317 DOI: 10.1016/j.plipres.2022.101198] [Citation(s) in RCA: 95] [Impact Index Per Article: 47.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2022] [Revised: 11/03/2022] [Accepted: 11/09/2022] [Indexed: 11/14/2022]
Abstract
The endoplasmic reticulum (ER) is a complex and dynamic organelle that regulates many cellular pathways, including protein synthesis, protein quality control, and lipid synthesis. When one or multiple ER roles are dysregulated and saturated, the ER enters a stress state, which, in turn, activates the highly conserved unfolded protein response (UPR). By sensing the accumulation of unfolded proteins or lipid bilayer stress (LBS) at the ER, the UPR triggers pathways to restore ER homeostasis and eventually induces apoptosis if the stress remains unresolved. In recent years, it has emerged that the UPR works intimately with other cellular pathways to maintain lipid homeostasis at the ER, and so does at cellular levels. Lipid distribution, along with lipid anabolism and catabolism, are tightly regulated, in part, by the ER. Dysfunctional and overwhelmed lipid-related pathways, independently or in combination with ER stress, can have reciprocal effects on other cellular functions, contributing to the development of diseases. In this review, we summarize the current understanding of the UPR in response to proteotoxic stress and LBS and the breadth of the functions mitigated by the UPR in different tissues and in the context of diseases.
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Affiliation(s)
- Cenk Celik
- School of Biological Sciences, Nanyang Technological University, Singapore
| | | | - Wei Sheng Yap
- School of Biological Sciences, Nanyang Technological University, Singapore
| | - Guillaume Thibault
- School of Biological Sciences, Nanyang Technological University, Singapore; Mechanobiology Institute, National University of Singapore, Singapore; Institute of Molecular and Cell Biology, A*STAR, Singapore.
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Martínez Corrales G, Li M, Svermova T, Goncalves A, Voicu D, Dobson AJ, Southall TD, Alic N. Transcriptional memory of dFOXO activation in youth curtails later-life mortality through chromatin remodeling and Xbp1. NATURE AGING 2022; 2:1176-1190. [PMID: 37118537 PMCID: PMC7614430 DOI: 10.1038/s43587-022-00312-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 10/19/2022] [Indexed: 12/03/2022]
Abstract
A transient, homeostatic transcriptional response can result in transcriptional memory, programming subsequent transcriptional outputs. Transcriptional memory has great but unappreciated potential to alter animal aging as animals encounter a multitude of diverse stimuli throughout their lifespan. Here we show that activating an evolutionarily conserved, longevity-promoting transcription factor, dFOXO, solely in early adulthood of female fruit flies is sufficient to improve their subsequent health and survival in midlife and late life. This youth-restricted dFOXO activation causes persistent changes to chromatin landscape in the fat body and requires chromatin remodelers such as the SWI/SNF and ISWI complexes to program health and longevity. Chromatin remodeling is accompanied by a long-lasting transcriptional program that is distinct from that observed during acute dFOXO activation and includes induction of Xbp1. We show that this later-life induction of Xbp1 is sufficient to curtail later-life mortality. Our study demonstrates that transcriptional memory can profoundly alter how animals age.
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Affiliation(s)
- Guillermo Martínez Corrales
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London, UK
| | - Mengjia Li
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London, UK
| | - Tatiana Svermova
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London, UK
| | - Alex Goncalves
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London, UK
| | - Diana Voicu
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London, UK
| | - Adam J Dobson
- School of Molecular Biosciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, UK
| | - Tony D Southall
- Department of Life Sciences, Imperial College London, London, UK
| | - Nazif Alic
- Institute of Healthy Ageing and the Research Department of Genetics, Evolution, and Environment, University College London, London, UK.
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Dudkevich R, Koh JH, Beaudoin-Chabot C, Celik C, Lebenthal-Loinger I, Karako-Lampert S, Ahmad-Albukhari S, Thibault G, Henis-Korenblit S. Neuronal IRE-1 coordinates an organism-wide cold stress response by regulating fat metabolism. Cell Rep 2022; 41:111739. [PMID: 36450261 DOI: 10.1016/j.celrep.2022.111739] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 10/07/2022] [Accepted: 11/07/2022] [Indexed: 11/30/2022] Open
Abstract
Cold affects many aspects of biology, medicine, agriculture, and industry. Here, we identify a conserved endoplasmic reticulum (ER) stress response, distinct from the canonical unfolded protein response, that maintains lipid homeostasis during extreme cold. We establish that the ER stress sensor IRE-1 is critical for resistance to extreme cold and activated by cold temperature. Specifically, neuronal IRE-1 signals through JNK-1 and neuropeptide signaling to regulate lipid composition within the animal. This cold-response pathway can be bypassed by dietary supplementation with unsaturated fatty acids. Altogether, our findings define an ER-centric conserved organism-wide cold stress response, consisting of molecular neuronal sensors, effectors, and signaling moieties, which control adaptation to cold conditions in the organism. Better understanding of the molecular basis of this stress response is crucial for the optimal use of cold conditions on live organisms and manipulation of lipid saturation homeostasis, which is perturbed in human pathologies.
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Affiliation(s)
- Reut Dudkevich
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Jhee Hong Koh
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
| | | | - Cenk Celik
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
| | | | - Sarit Karako-Lampert
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel
| | - Syed Ahmad-Albukhari
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore
| | - Guillaume Thibault
- School of Biological Sciences, Nanyang Technological University, Singapore 637551, Singapore; Mechanobiology Institute, National University of Singapore, Singapore 117411, Singapore; Institute of Molecular and Cell Biology, A(∗)STAR, Singapore 138673, Singapore
| | - Sivan Henis-Korenblit
- The Mina & Everard Goodman Faculty of Life Sciences, Bar-Ilan University, Ramat-Gan, Israel.
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Cabral‐Miranda F, Tamburini G, Martinez G, Ardiles AO, Medinas DB, Gerakis Y, Hung MD, Vidal R, Fuentealba M, Miedema T, Duran‐Aniotz C, Diaz J, Ibaceta‐Gonzalez C, Sabusap CM, Bermedo‐Garcia F, Mujica P, Adamson S, Vitangcol K, Huerta H, Zhang X, Nakamura T, Sardi SP, Lipton SA, Kennedy BK, Henriquez JP, Cárdenas JC, Plate L, Palacios AG, Hetz C. Unfolded protein response IRE1/XBP1 signaling is required for healthy mammalian brain aging. EMBO J 2022; 41:e111952. [PMID: 36314651 PMCID: PMC9670206 DOI: 10.15252/embj.2022111952] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2022] [Revised: 09/09/2022] [Accepted: 09/16/2022] [Indexed: 11/18/2022] Open
Abstract
Aging is a major risk factor to develop neurodegenerative diseases and is associated with decreased buffering capacity of the proteostasis network. We investigated the significance of the unfolded protein response (UPR), a major signaling pathway activated to cope with endoplasmic reticulum (ER) stress, in the functional deterioration of the mammalian brain during aging. We report that genetic disruption of the ER stress sensor IRE1 accelerated age-related cognitive decline. In mouse models, overexpressing an active form of the UPR transcription factor XBP1 restored synaptic and cognitive function, in addition to reducing cell senescence. Proteomic profiling of hippocampal tissue showed that XBP1 expression significantly restore changes associated with aging, including factors involved in synaptic function and pathways linked to neurodegenerative diseases. The genes modified by XBP1 in the aged hippocampus where also altered. Collectively, our results demonstrate that strategies to manipulate the UPR in mammals may help sustain healthy brain aging.
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Affiliation(s)
- Felipe Cabral‐Miranda
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
- Instituto de Ciências BiomédicasUniversidade Federal do Rio de JaneiroRio de JaneiroBrazil
| | - Giovanni Tamburini
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
| | - Gabriela Martinez
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
| | - Alvaro O Ardiles
- Centro Interdisciplinario de Neurociencia de ValparaísoUniversidad de ValparaisoValparaisoChile
- Centro de Neurología Traslacional, Escuela de MedicinaUniversidad de ValparaísoValparaisoChile
| | - Danilo B Medinas
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
| | - Yannis Gerakis
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
| | - Mei‐Li Diaz Hung
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
| | - René Vidal
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Center for Integrative BiologyUniversidad MayorSantiagoChile
| | - Matias Fuentealba
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
| | - Tim Miedema
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
| | - Claudia Duran‐Aniotz
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
| | - Javier Diaz
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
| | | | - Carleen M Sabusap
- Departments of Chemistry and Biological SciencesVanderbilt UniversityNashvilleTNUSA
| | - Francisca Bermedo‐Garcia
- Department of Cell Biology, Center for Advanced Microscopy (CMA BioBio)Universidad de ConcepciónConcepciónChile
| | - Paula Mujica
- Centro de Neurología Traslacional, Escuela de MedicinaUniversidad de ValparaísoValparaisoChile
| | | | | | - Hernan Huerta
- Center for Integrative BiologyUniversidad MayorSantiagoChile
| | - Xu Zhang
- Department of Molecular Medicine and Neurodegeneration New Medicines CenterThe Scripps Research InstituteLa JollaCAUSA
| | - Tomohiro Nakamura
- Department of Molecular Medicine and Neurodegeneration New Medicines CenterThe Scripps Research InstituteLa JollaCAUSA
| | | | - Stuart A Lipton
- Department of Molecular Medicine and Neurodegeneration New Medicines CenterThe Scripps Research InstituteLa JollaCAUSA
- Department of Neurosciences, School of MedicineUniversity of California, San DiegoLa JollaCAUSA
| | - Brian K Kennedy
- Buck Institute for Research on AgingNovatoCAUSA
- Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore; Centre for Healthy Longevity, National University Health System; Departments of Biochemistry and Physiology, Yong Loo Lin School of Medicine, National University of SingaporeSingaporeSingapore
| | - Juan Pablo Henriquez
- Department of Cell Biology, Center for Advanced Microscopy (CMA BioBio)Universidad de ConcepciónConcepciónChile
| | - J Cesar Cárdenas
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Center for Integrative BiologyUniversidad MayorSantiagoChile
- Buck Institute for Research on AgingNovatoCAUSA
| | - Lars Plate
- Departments of Chemistry and Biological SciencesVanderbilt UniversityNashvilleTNUSA
| | - Adrian G Palacios
- Centro Interdisciplinario de Neurociencia de ValparaísoUniversidad de ValparaisoValparaisoChile
| | - Claudio Hetz
- Center for GeroscienceBrain Health and MetabolismSantiagoChile
- Biomedical Neuroscience Institute, Faculty of MedicineUniversity of ChileSantiagoChile
- Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, Faculty of MedicineUniversity of ChileSantiagoChile
- Buck Institute for Research on AgingNovatoCAUSA
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Zhou J, Weng J, Huang X, Sun S, Yang Q, Lin H, Yang J, Guo H, Chi J. Repair effect of the poly (D,L-lactic acid) nanoparticle containing tauroursodeoxycholic acid-eluting stents on endothelial injury after stent implantation. Front Cardiovasc Med 2022; 9:1025558. [PMID: 36426231 PMCID: PMC9678935 DOI: 10.3389/fcvm.2022.1025558] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Accepted: 10/24/2022] [Indexed: 11/10/2022] Open
Abstract
Background Chronic endoplasmic reticulum stress (ERS) plays a crucial role in cardiovascular diseases. Thus, it can be considered a therapeutic target for these diseases. In this study, poly (D,L-lactic acid) (PDLLA) nanoparticle-eluting stents loaded with tauroursodeoxycholic acid (TUDCA), an ER stress inhibitor, was fabricated to assess their ability to reduce endothelial cell apoptosis and promote re-endothelialization after stent implantation. Materials and methods PDLLA nanoparticles loaded with TUDCA were prepared via the emulsification-solvent evaporation method. The cumulative release rates of TUDCA were measured in vitro via high-performance liquid chromatography. The carotid arteries of rabbits were subsequently implanted with stents in vivo. The rabbits were then sacrificed after 4 weeks for scanning electron microscopy. Meanwhile, TUDCA concentration in the homogenate of the peripheral blood and distal vascular tissue after stent implantation was measured. The effect of TUDCA on ERS, apoptosis, and human umbilical vein endothelial cell (HUVEC) function was investigated in vitro by performing cell migration assay, wound healing assay, cell proliferation assays, endoplasmic reticulum (ER)-specific fluorescence staining, immunofluorescence, and western blotting. Results TUDCA nanoparticles were released slowly over 28 days. In addition, TUDCA-eluting stents enhanced re-endothelialization and accelerated the recovery of endotheliocytes in vivo. ERS and apoptosis significantly increased in H2O2-treated HUVECs in vitro. Meanwhile, TUDCA reduced apoptosis and improved function by inhibiting ERS in H2O2-treated HUVECs. Decreased rates of apoptosis and ERS were observed after silencing XBP-1s in H2O2-treated HUVECs. Conclusion TUDCA can inhibit apoptosis and promote re-endothelialization after stent implantation by inhibiting IRE/XBP1s-related ERS. These results indicate the potential therapeutic application of TUDCA as a drug-coated stent.
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Affiliation(s)
- Jiedong Zhou
- Department of Cardiology, Shaoxing People’s Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Jingfan Weng
- Zhejiang Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, China
| | - Xingxiao Huang
- Department of Cardiology, Shaoxing People’s Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Shimin Sun
- Department of Cardiology, Shaoxing People’s Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Qi Yang
- Department of Cardiology, Shaoxing People’s Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Hui Lin
- Department of Cardiology, Shaoxing People’s Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Jinjin Yang
- Department of Cardiology, Shaoxing People’s Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
| | - Hangyuan Guo
- Shaoxing University School of Medicine, Shaoxing, China
| | - Jufang Chi
- Department of Cardiology, Shaoxing People’s Hospital (Shaoxing Hospital, Zhejiang University School of Medicine), Shaoxing, China
- *Correspondence: Jufang Chi,
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De-Souza EA, Cummins N, Taylor RC. IRE-1 endoribonuclease activity declines early in C. elegans adulthood and is not rescued by reduced reproduction. FRONTIERS IN AGING 2022; 3:1044556. [PMID: 36389122 PMCID: PMC9649906 DOI: 10.3389/fragi.2022.1044556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/14/2022] [Accepted: 10/11/2022] [Indexed: 11/06/2022]
Abstract
The proteome of a cell helps to define its functional specialization. Most proteins must be translated and properly folded to ensure their biological function, but with aging, animals lose their ability to maintain a correctly folded proteome. This leads to the accumulation of protein aggregates, decreased stress resistance, and the onset of age-related disorders. The unfolded protein response of the endoplasmic reticulum (UPRER) is a central protein quality control mechanism, the function of which is known to decline with age. Here, we show that age-related UPRER decline in Caenorhabditis elegans occurs at the onset of the reproductive period and is caused by a failure in IRE-1 endoribonuclease activities, affecting both the splicing of xbp-1 mRNA and regulated Ire1 dependent decay (RIDD) activity. Animals with a defect in germline development, previously shown to rescue the transcriptional activity of other stress responses during aging, do not show restored UPRER activation with age. This underlines the mechanistic difference between age-associated loss of UPRER activation and that of other stress responses in this system, and uncouples reproductive status from the activity of somatic maintenance pathways. These observations may aid in the development of strategies that aim to overcome the proteostasis decline observed with aging.
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Affiliation(s)
| | | | - Rebecca C. Taylor
- Neurobiology Division, MRC Laboratory of Molecular Biology, Cambridge, United Kingdom
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38
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Beaudoin-Chabot C, Wang L, Celik C, Abdul Khalid ATF, Thalappilly S, Xu S, Koh JH, Lim VWX, Low AD, Thibault G. The unfolded protein response reverses the effects of glucose on lifespan in chemically-sterilized C. elegans. Nat Commun 2022; 13:5889. [PMID: 36261415 PMCID: PMC9582010 DOI: 10.1038/s41467-022-33630-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Accepted: 09/27/2022] [Indexed: 12/02/2022] Open
Abstract
Metabolic diseases often share common traits, including accumulation of unfolded proteins in the endoplasmic reticulum (ER). Upon ER stress, the unfolded protein response (UPR) is activated to limit cellular damage which weakens with age. Here, we show that Caenorhabditis elegans fed a bacterial diet supplemented high glucose at day 5 of adulthood (HGD-5) extends their lifespan, whereas exposed at day 1 (HGD-1) experience shortened longevity. We observed a metabolic shift only in HGD-1, while glucose and infertility synergistically prolonged the lifespan of HGD-5, independently of DAF-16. Notably, we identified that UPR stress sensors ATF-6 and PEK-1 contributed to the longevity of HGD-5 worms, while ire-1 ablation drastically increased HGD-1 lifespan. Together, we postulate that HGD activates the otherwise quiescent UPR in aged worms to overcome ageing-related stress and restore ER homeostasis. In contrast, young animals subjected to HGD provokes unresolved ER stress, conversely leading to a detrimental stress response.
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Affiliation(s)
| | - Lei Wang
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
- Department Physiology and Biophysics, University of Miami Miller School of Medicine, Miami, FL, 33136, USA
| | - Cenk Celik
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | | | - Subhash Thalappilly
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Shiyi Xu
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Jhee Hong Koh
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Venus Wen Xuan Lim
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Ann Don Low
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore
| | - Guillaume Thibault
- School of Biological Sciences, Nanyang Technological University, Singapore, 637551, Singapore.
- Mechanobiology Institute, National University of Singapore, Singapore, 117411, Singapore.
- Institute of Molecular and Cell Biology, A*STAR, Singapore, 138673, Singapore.
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39
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Segref A, Vakkayil KL, Padvitski T, Li Q, Kroef V, Lormann J, Körner L, Finger F, Hoppe T. Thermosensation in Caenorhabditis elegans is linked to ubiquitin-dependent protein turnover via insulin and calcineurin signalling. Nat Commun 2022; 13:5874. [PMID: 36198694 PMCID: PMC9534930 DOI: 10.1038/s41467-022-33467-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2021] [Accepted: 09/16/2022] [Indexed: 11/21/2022] Open
Abstract
Organismal physiology and survival are influenced by environmental conditions and linked to protein quality control. Proteome integrity is achieved by maintaining an intricate balance between protein folding and degradation. In Caenorhabditis elegans, acute heat stress determines cell non-autonomous regulation of chaperone levels. However, how the perception of environmental changes, including physiological temperature, affects protein degradation remains largely unexplored. Here, we show that loss-of-function of dyf-1 in Caenorhabditis elegans associated with dysfunctional sensory neurons leads to defects in both temperature perception and thermal adaptation of the ubiquitin/proteasome system centered on thermosensory AFD neurons. Impaired perception of moderate temperature changes worsens ubiquitin-dependent proteolysis in intestinal cells. Brain-gut communication regulating protein turnover is mediated by upregulation of the insulin-like peptide INS-5 and inhibition of the calcineurin-regulated forkhead-box transcription factor DAF-16/FOXO. Our data indicate that perception of ambient temperature and its neuronal integration is important for the control of proteome integrity in complex organisms.
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Affiliation(s)
- Alexandra Segref
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany.
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany.
| | - Kavya L Vakkayil
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
| | - Tsimafei Padvitski
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
| | - Qiaochu Li
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
| | - Virginia Kroef
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
- Max Planck Institute for Biology of Ageing, 50931, Cologne, Germany
| | - Jakob Lormann
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
| | - Lioba Körner
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
| | - Fabian Finger
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, 2200, Copenhagen, Denmark
| | - Thorsten Hoppe
- Institute for Genetics, University of Cologne, 50674, Cologne, Germany.
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931, Cologne, Germany.
- Center for Molecular Medicine Cologne (CMMC), Faculty of Medicine and University Hospital of Cologne, 50931, Cologne, Germany.
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40
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Lipid metabolism and ageing in Caenorhabditis elegans: a complex interplay. Biogerontology 2022; 23:541-557. [PMID: 36048312 DOI: 10.1007/s10522-022-09989-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Accepted: 08/25/2022] [Indexed: 11/02/2022]
Abstract
Life expectancy in Western countries is increasing, with concomitant rise in ageing-related pathologies, including Parkinson's and Alzheimer's disease, as well as other neurodegenerative diseases. Consequently, the medical, psychological and economic burden to society is increasing. Thus, understanding the cellular and molecular mechanisms underlying the association of ageing with elevated vulnerability to disease is crucial towards promoting quality of life in old age. Caenorhabditis elegans has emerged as a versatile model to study ageing, due to its simplicity, fast life cycle, and the availability of a wide range of biological tools to target specific genes and cells. Indeed, recent studies in C. elegans have revealed that lipid metabolism plays a key role in controlling longevity by impinging on a plethora of molecular pathways and cell types. Here, we summarise findings relevant to the interplay between lipid metabolism and ageing in C. elegans, and discuss the implications for the pathogenesis of age-related disorders in humans.
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41
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Shang L, Aughey E, Kim H, Heden TD, Wang L, Najt CP, Esch N, Brunko S, Abrahante JE, Macchietto M, Mashek MT, Fairbanks T, Promislow DEL, Neufeld TP, Mashek DG. Systemic lipolysis promotes physiological fitness in Drosophila melanogaster. Aging (Albany NY) 2022; 14:6481-6506. [PMID: 36044277 PMCID: PMC9467406 DOI: 10.18632/aging.204251] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 08/15/2022] [Indexed: 11/25/2022]
Abstract
Since interventions such as caloric restriction or fasting robustly promote lipid catabolism and improve aging-related phenotypical markers, we investigated the direct effect of increased lipid catabolism via overexpression of bmm (brummer, FBgn0036449), the major triglyceride hydrolase in Drosophila, on lifespan and physiological fitness. Comprehensive characterization was carried out using RNA-seq, lipidomics and metabolomics analysis. Global overexpression of bmm strongly promoted numerous markers of physiological fitness, including increased female fecundity, fertility maintenance, preserved locomotion activity, increased mitochondrial biogenesis and oxidative metabolism. Increased bmm robustly upregulated the heat shock protein 70 (Hsp70) family of proteins, which equipped the flies with higher resistance to heat, cold, and ER stress via improved proteostasis. Despite improved physiological fitness, bmm overexpression did not extend lifespan. Taken together, these data show that bmm overexpression has broad beneficial effects on physiological fitness, but these effects did not impact lifespan.
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Affiliation(s)
- Linshan Shang
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Elizabeth Aughey
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Huiseon Kim
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Timothy D. Heden
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Lu Wang
- Department of Environmental and Occupational Health Sciences, University of Washington, Seattle, WA 98105, USA
| | - Charles P. Najt
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Nicholas Esch
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Sophia Brunko
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Juan E. Abrahante
- University of Minnesota Informatics Institute, Minneapolis, MN 55455, USA
| | - Marissa Macchietto
- Minnesota Supercomputing Institute, University of Minnesota, Minneapolis, MN 55455, USA
| | - Mara T. Mashek
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
| | - Todd Fairbanks
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Daniel E. L. Promislow
- Department of Biology, University of Washington, Seattle, WA 98195, USA
- Department of Lab Medicine and Pathology, University of Washington School of Medicine, Seattle, WA 98195, USA
| | - Thomas P. Neufeld
- Department of Genetics, Cell Biology, and Development, University of Minnesota, Minneapolis, MN 55455, USA
| | - Douglas G. Mashek
- Department of Biochemistry, Molecular Biology and Biophysics, University of Minnesota, Minneapolis, MN 55455, USA
- Department of Medicine, Division of Diabetes, Endocrinology and Metabolism, University of Minnesota, Minneapolis, MN 55455, USA
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42
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Ferreira JV, da Rosa Soares A, Pereira P. Cell Non-autonomous Proteostasis Regulation in Aging and Disease. Front Neurosci 2022; 16:878296. [PMID: 35757551 PMCID: PMC9220288 DOI: 10.3389/fnins.2022.878296] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2022] [Accepted: 05/18/2022] [Indexed: 11/13/2022] Open
Abstract
Aging is a risk factor for a number of diseases, being the more notorious ones perhaps neurodegenerative diseases such as Alzheimer's and Parkinson's. These and other age-related pathologies are often associated with accumulation of proteotoxic material inside cells, as well as with the accumulation of protein deposits extracellularly. It is widely accepted that this accumulation of toxic proteins trails a progressive decline in the mechanisms that regulate protein homeostasis, or proteostasis, during aging. However, despite significant efforts, the progress in terms of novel or improved therapies targeting accumulation of proteotoxic material has been rather limited. For example, clinical trials for new drugs aimed at treating Alzheimer's disease, by preventing accumulation of toxic proteins, have notoriously failed. On the other hand, it is becoming increasingly apparent that regulation of proteostasis is not a cell autonomous process. In fact, cells rely on complex transcellular networks to maintain tissue and organ homeostasis involving endocrine and paracrine signaling pathways. In this review we will discuss the impact of cell non-autonomous proteostasis mechanisms and their impact in aging and disease. We will focus on how transcellular proteostasis networks can shed new light into stablished paradigms about the aging of organisms.
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Affiliation(s)
- Joao Vasco Ferreira
- Proteostasis and Intercellular Communication Lab, Chronic Diseases Research Centre (CEDOC), NOVA Medical School, Faculdade de Ciencias Medicas, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Ana da Rosa Soares
- Proteostasis and Intercellular Communication Lab, Chronic Diseases Research Centre (CEDOC), NOVA Medical School, Faculdade de Ciencias Medicas, Universidade NOVA de Lisboa, Lisbon, Portugal
| | - Paulo Pereira
- Proteostasis and Intercellular Communication Lab, Chronic Diseases Research Centre (CEDOC), NOVA Medical School, Faculdade de Ciencias Medicas, Universidade NOVA de Lisboa, Lisbon, Portugal
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43
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Kaulich E, Carroll T, Ackley BD, Tang YQ, Hardege I, Nehrke K, Schafer WR, Walker DS. Distinct roles for two Caenorhabditis elegans acid-sensing ion channels in an ultradian clock. eLife 2022; 11:e75837. [PMID: 35666106 PMCID: PMC9374441 DOI: 10.7554/elife.75837] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Accepted: 06/01/2022] [Indexed: 11/13/2022] Open
Abstract
Biological clocks are fundamental to an organism's health, controlling periodicity of behaviour and metabolism. Here, we identify two acid-sensing ion channels, with very different proton sensing properties, and describe their role in an ultradian clock, the defecation motor program (DMP) of the nematode Caenorhabditis elegans. An ACD-5-containing channel, on the apical membrane of the intestinal epithelium, is essential for maintenance of luminal acidity, and thus the rhythmic oscillations in lumen pH. In contrast, the second channel, composed of FLR-1, ACD-3 and/or DEL-5, located on the basolateral membrane, controls the intracellular Ca2+ wave and forms a core component of the master oscillator that controls the timing and rhythmicity of the DMP. flr-1 and acd-3/del-5 mutants show severe developmental and metabolic defects. We thus directly link the proton-sensing properties of these channels to their physiological roles in pH regulation and Ca2+ signalling, the generation of an ultradian oscillator, and its metabolic consequences.
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Affiliation(s)
- Eva Kaulich
- Neurobiology Division, MRC Laboratory of Molecular BiologyCambridgeUnited Kingdom
| | - Trae Carroll
- Department of Pathology and Lab Medicine, University of Rochester Medical CenterRochesterUnited States
| | - Brian D Ackley
- Department of Molecular Biosciences, University of KansasLawrenceUnited States
| | - Yi-Quan Tang
- Neurobiology Division, MRC Laboratory of Molecular BiologyCambridgeUnited Kingdom
- State Key Laboratory of Medical Neurobiology and MOE Frontiers Center for Brain Science, Institutes of Brain Science, Fudan UniversityShanghaiChina
| | - Iris Hardege
- Neurobiology Division, MRC Laboratory of Molecular BiologyCambridgeUnited Kingdom
| | - Keith Nehrke
- Department of Medicine, Nephrology Division, University of Rochester Medical CenterRochesterUnited States
| | - William R Schafer
- Neurobiology Division, MRC Laboratory of Molecular BiologyCambridgeUnited Kingdom
- Department of Biology, KU LeuvenLeuvenBelgium
| | - Denise S Walker
- Neurobiology Division, MRC Laboratory of Molecular BiologyCambridgeUnited Kingdom
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44
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Hodge F, Bajuszova V, van Oosten-Hawle P. The Intestine as a Lifespan- and Proteostasis-Promoting Signaling Tissue. FRONTIERS IN AGING 2022; 3:897741. [PMID: 35821863 PMCID: PMC9261303 DOI: 10.3389/fragi.2022.897741] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 05/09/2022] [Indexed: 11/13/2022]
Abstract
In multicellular organisms such as Caenorhabditis elegans, cellular stress stimuli and responses are communicated between tissues to promote organismal health- and lifespan. The nervous system is the predominant regulator of cell nonautonomous proteostasis that orchestrates systemic stress responses to integrate both internal and external stimuli. This review highlights the role of the intestine in mediating cell nonautonomous stress responses and explores recent findings that suggest a central role for the intestine to regulate organismal proteostasis. As a tissue that receives and further transduces signals from the nervous system in response to dietary restriction, heat- and oxidative stress, and hypoxia, we explore evidence suggesting the intestine is a key regulatory organ itself. From the perspective of naturally occurring stressors such as dietary restriction and pathogen infection we highlight how the intestine can function as a key regulator of organismal proteostasis by integrating insulin/IGF-like signaling, miRNA-, neuropeptide- and metabolic signaling to alter distal tissue functions in promoting survival, health- and lifespan.
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Affiliation(s)
| | | | - Patricija van Oosten-Hawle
- Astbury Centre for Structural Molecular Biology, Faculty of Biological Sciences, School of Molecular and Cellular Biology, University of Leeds, Leeds, United Kingdom
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45
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Duan H, Pan J, Guo M, Li J, Yu L, Fan L. Dietary strategies with anti-aging potential: dietary patterns and supplements. Food Res Int 2022; 158:111501. [DOI: 10.1016/j.foodres.2022.111501] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Revised: 06/05/2022] [Accepted: 06/09/2022] [Indexed: 11/04/2022]
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46
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Piazzesi A, Wang Y, Jackson J, Wischhof L, Zeisler-Diehl V, Scifo E, Oganezova I, Hoffmann T, Gómez Martín P, Bertan F, Wrobel CJJ, Schroeder FC, Ehninger D, Händler K, Schultze JL, Schreiber L, van Echten-Deckert G, Nicotera P, Bano D. CEST-2.2 overexpression alters lipid metabolism and extends longevity of mitochondrial mutants. EMBO Rep 2022; 23:e52606. [PMID: 35297148 PMCID: PMC9066074 DOI: 10.15252/embr.202152606] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/14/2022] [Accepted: 02/22/2022] [Indexed: 12/17/2022] Open
Abstract
Mitochondrial dysfunction can either extend or decrease Caenorhabditis elegans lifespan, depending on whether transcriptionally regulated responses can elicit durable stress adaptation to otherwise detrimental lesions. Here, we test the hypothesis that enhanced metabolic flexibility is sufficient to circumvent bioenergetic abnormalities associated with the phenotypic threshold effect, thereby transforming short‐lived mitochondrial mutants into long‐lived ones. We find that CEST‐2.2, a carboxylesterase mainly localizes in the intestine, may stimulate the survival of mitochondrial deficient animals. We report that genetic manipulation of cest‐2.2 expression has a minor lifespan impact on wild‐type nematodes, whereas its overexpression markedly extends the lifespan of complex I‐deficient gas‐1(fc21) mutants. We profile the transcriptome and lipidome of cest‐2.2 overexpressing animals and show that CEST‐2.2 stimulates lipid metabolism and fatty acid beta‐oxidation, thereby enhancing mitochondrial respiratory capacity through complex II and LET‐721/ETFDH, despite the inherited genetic lesion of complex I. Together, our findings unveil a metabolic pathway that, through the tissue‐specific mobilization of lipid deposits, may influence the longevity of mitochondrial mutant C. elegans.
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Affiliation(s)
- Antonia Piazzesi
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Yiru Wang
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Joshua Jackson
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Lena Wischhof
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | | | - Enzo Scifo
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Ina Oganezova
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Thorben Hoffmann
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | | | - Fabio Bertan
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Chester J J Wrobel
- Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | - Frank C Schroeder
- Boyce Thompson Institute and Department of Chemistry and Chemical Biology, Cornell University, Ithaca, NY, USA
| | - Dan Ehninger
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
| | - Kristian Händler
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.,PRECISE Platform for Single Cell Genomics and Epigenomics, German Center for Neurodegenerative Diseases (DZNE), University of Bonn, Bonn, Germany
| | - Joachim L Schultze
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany.,PRECISE Platform for Single Cell Genomics and Epigenomics, German Center for Neurodegenerative Diseases (DZNE), University of Bonn, Bonn, Germany.,Department for Genomics and Immunoregulation, LIMES Institute, University of Bonn, Bonn, Germany
| | - Lukas Schreiber
- Institute of Cellular and Molecular Botany (IZMB), University of Bonn, Bonn, Germany
| | | | | | - Daniele Bano
- German Center for Neurodegenerative Diseases (DZNE), Bonn, Germany
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47
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Dutta N, Garcia G, Higuchi-Sanabria R. Hijacking Cellular Stress Responses to Promote Lifespan. FRONTIERS IN AGING 2022; 3:860404. [PMID: 35821861 PMCID: PMC9261414 DOI: 10.3389/fragi.2022.860404] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/22/2022] [Accepted: 02/23/2022] [Indexed: 01/21/2023]
Abstract
Organisms are constantly exposed to stress both from the external environment and internally within the cell. To maintain cellular homeostasis under different environmental and physiological conditions, cell have adapted various stress response signaling pathways, such as the heat shock response (HSR), unfolded protein responses of the mitochondria (UPRMT), and the unfolded protein response of the endoplasmic reticulum (UPRER). As cells grow older, all cellular stress responses have been shown to deteriorate, which is a major cause for the physiological consequences of aging and the development of numerous age-associated diseases. In contrast, elevated stress responses are often associated with lifespan extension and amelioration of degenerative diseases in different model organisms, including C. elegans. Activating cellular stress response pathways could be considered as an effective intervention to alleviate the burden of aging by restoring function of essential damage-clearing machinery, including the ubiquitin-proteosome system, chaperones, and autophagy. Here, we provide an overview of newly emerging concepts of these stress response pathways in healthy aging and longevity with a focus on the model organism, C. elegans.
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48
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Zhang WH, Koyuncu S, Vilchez D. Insights Into the Links Between Proteostasis and Aging From C. elegans. FRONTIERS IN AGING 2022; 3:854157. [PMID: 35821832 PMCID: PMC9261386 DOI: 10.3389/fragi.2022.854157] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/22/2022] [Indexed: 04/20/2023]
Abstract
Protein homeostasis (proteostasis) is maintained by a tightly regulated and interconnected network of biological pathways, preventing the accumulation and aggregation of damaged or misfolded proteins. Thus, the proteostasis network is essential to ensure organism longevity and health, while proteostasis failure contributes to the development of aging and age-related diseases that involve protein aggregation. The model organism Caenorhabditis elegans has proved invaluable for the study of proteostasis in the context of aging, longevity and disease, with a number of pivotal discoveries attributable to the use of this organism. In this review, we discuss prominent findings from C. elegans across the many key aspects of the proteostasis network, within the context of aging and disease. These studies collectively highlight numerous promising therapeutic targets, which may 1 day facilitate the development of interventions to delay aging and prevent age-associated diseases.
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Affiliation(s)
- William Hongyu Zhang
- Cologne Excellence Cluster for Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Seda Koyuncu
- Cologne Excellence Cluster for Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - David Vilchez
- Cologne Excellence Cluster for Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
- Faculty of Medicine, University Hospital Cologne, Cologne, Germany
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49
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Liu YJ, Gao AW, Smith RL, Janssens GE, Panneman DM, Jongejan A, van Weeghel M, Vaz FM, Silvestrini MJ, Lapierre LR, MacInnes AW, Houtkooper RH. Reduced ech-6 expression attenuates fat-induced lifespan shortening in C. elegans. Sci Rep 2022; 12:3350. [PMID: 35233004 PMCID: PMC8888598 DOI: 10.1038/s41598-022-07397-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2021] [Accepted: 02/17/2022] [Indexed: 11/30/2022] Open
Abstract
Deregulated energy homeostasis represents a hallmark of aging and results from complex gene-by-environment interactions. Here, we discovered that reducing the expression of the gene ech-6 encoding enoyl-CoA hydratase remitted fat diet-induced deleterious effects on lifespan in Caenorhabditis elegans, while a basal expression of ech-6 was important for survival under normal dietary conditions. Lipidomics revealed that supplementation of fat in ech-6-silenced worms had marginal effects on lipid profiles, suggesting an alternative fat utilization for energy production. Transcriptomics further suggest a causal relation between the lysosomal pathway, energy production, and the longevity effect conferred by the interaction between ech-6 and fat diets. Indeed, enhancing energy production from endogenous fat by overexpressing lysosomal lipase lipl-4 recapitulated the lifespan effects of fat diets on ech-6-silenced worms. Collectively, these results suggest that the gene ech-6 is potential modulator of metabolic flexibility and may be a target for promoting metabolic health and longevity.
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Affiliation(s)
- Yasmine J Liu
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Arwen W Gao
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Laboratory of Integrative Systems Physiology, Institute of Bioengineering, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Reuben L Smith
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Georges E Janssens
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Daan M Panneman
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Radboud Center for Mitochondrial Medicine, Department of Pediatrics, Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Aldo Jongejan
- Bioinformatics Laboratory, Department of Epidemiology and Data Science, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, AZ, Amsterdam, The Netherlands
| | - Michel van Weeghel
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Core Facility Metabolomics, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Frédéric M Vaz
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.,Core Facility Metabolomics, Amsterdam University Medical Centers, University of Amsterdam, Amsterdam, The Netherlands
| | - Melissa J Silvestrini
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI, 02912, USA
| | - Louis R Lapierre
- Department of Molecular Biology, Cell Biology and Biochemistry, Brown University, Providence, RI, 02912, USA
| | - Alyson W MacInnes
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands
| | - Riekelt H Houtkooper
- Laboratory Genetic Metabolic Diseases, Amsterdam Gastroenterology, Endocrinology, and Metabolism, Amsterdam Cardiovascular Sciences, Amsterdam UMC, University of Amsterdam, Meibergdreef 9, 1105 AZ, Amsterdam, The Netherlands.
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Wodrich APK, Scott AW, Shukla AK, Harris BT, Giniger E. The Unfolded Protein Responses in Health, Aging, and Neurodegeneration: Recent Advances and Future Considerations. Front Mol Neurosci 2022; 15:831116. [PMID: 35283733 PMCID: PMC8914544 DOI: 10.3389/fnmol.2022.831116] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Accepted: 01/26/2022] [Indexed: 12/11/2022] Open
Abstract
Aging and age-related neurodegeneration are both associated with the accumulation of unfolded and abnormally folded proteins, highlighting the importance of protein homeostasis (termed proteostasis) in maintaining organismal health. To this end, two cellular compartments with essential protein folding functions, the endoplasmic reticulum (ER) and the mitochondria, are equipped with unique protein stress responses, known as the ER unfolded protein response (UPR ER ) and the mitochondrial UPR (UPR mt ), respectively. These organellar UPRs play roles in shaping the cellular responses to proteostatic stress that occurs in aging and age-related neurodegeneration. The loss of adaptive UPR ER and UPR mt signaling potency with age contributes to a feed-forward cycle of increasing protein stress and cellular dysfunction. Likewise, UPR ER and UPR mt signaling is often altered in age-related neurodegenerative diseases; however, whether these changes counteract or contribute to the disease pathology appears to be context dependent. Intriguingly, altering organellar UPR signaling in animal models can reduce the pathological consequences of aging and neurodegeneration which has prompted clinical investigations of UPR signaling modulators as therapeutics. Here, we review the physiology of both the UPR ER and the UPR mt , discuss how UPR ER and UPR mt signaling changes in the context of aging and neurodegeneration, and highlight therapeutic strategies targeting the UPR ER and UPR mt that may improve human health.
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Affiliation(s)
- Andrew P. K. Wodrich
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
- Interdisciplinary Program in Neuroscience, Georgetown University, Washington, DC, United States
- College of Medicine, University of Kentucky, Lexington, KY, United States
| | - Andrew W. Scott
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
| | - Arvind Kumar Shukla
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
| | - Brent T. Harris
- Department of Pathology, Georgetown University, Washington, DC, United States
- Department of Neurology, Georgetown University, Washington, DC, United States
| | - Edward Giniger
- National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, United States
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