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Zheng Y, Peng L, Jiang G, Zhou J, Yang S, Bai L, Li X, He M. Activation of chaperone-mediated autophagy exerting neuroprotection effect on intracerebral hemorrhage-induced neuronal injury by targeting Lamp2a. Exp Neurol 2024; 382:114986. [PMID: 39368534 DOI: 10.1016/j.expneurol.2024.114986] [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: 07/09/2024] [Revised: 09/27/2024] [Accepted: 10/02/2024] [Indexed: 10/07/2024]
Abstract
Intracerebral hemorrhage (ICH) is a common and devastating type of stroke, marked by significant morbidity and a grim prognosis. The inflammation cascade triggered by astrocytes plays a critical role in secondary brain injury (SBI) following ICH, leading to detrimental effects such as cell death. However, effective intervention strategies are currently lacking. This study aims to investigate the role of the astrocyte cascade reaction following ICH and identify potential intervention targets. Utilizing the GSE216607 and GSE206971 databases for analysis, we established a mouse autologous blood model. Firstly, our research revealed a significant activation of the autophagy pathway following intracerebral hemorrhage (ICH), with a notable upregulation of Lamp2a, a key factor in chaperone-mediated autophagy (CMA), primarily localized in astrocytes. Additionally, the downregulation of Lamp2a resulted in a significant augmentation of A1 reactive astrocytes, concomitant with a reduction in myelin coverage area, heightened neuronal injury, exacerbated motor and sensory deficits, and diminished neurological scores after ICH in mice. Conversely, CA77.1, an activator of CMA, could reverse ICH-induced augmentation of A1 reactive astrocytes, myelin damage, neuronal death, and neurobehavioral disorders. In conclusion, the activation of astrocyte CMA following ICH can exert neuroprotective effects. Lamp2a represents a promising therapeutic target for post-ICH treatment.
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Affiliation(s)
- Yun Zheng
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Department of Geriatrics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Lu Peng
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Guannan Jiang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Jialei Zhou
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Siyuan Yang
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Lei Bai
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China
| | - Xiang Li
- Department of Neurosurgery & Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China; Institute of Stroke Research, Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China.
| | - Mingqing He
- Department of Geriatrics, The First Affiliated Hospital of Soochow University, 188 Shizi Street, Suzhou 215006, Jiangsu Province, China.
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Jafari M, Macho-González A, Diaz A, Lindenau K, Santiago-Fernández O, Zeng M, Massey AC, de Cabo R, Kaushik S, Cuervo AM. Calorie restriction and calorie-restriction mimetics activate chaperone-mediated autophagy. Proc Natl Acad Sci U S A 2024; 121:e2317945121. [PMID: 38889154 PMCID: PMC11214046 DOI: 10.1073/pnas.2317945121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2023] [Accepted: 05/20/2024] [Indexed: 06/20/2024] Open
Abstract
Chaperone-mediated autophagy (CMA) is part of the mammalian cellular proteostasis network that ensures protein quality control, maintenance of proteome homeostasis, and proteome changes required for the adaptation to stress. Loss of proteostasis is one of the hallmarks of aging. CMA decreases with age in multiple rodent tissues and human cell types. A decrease in lysosomal levels of the lysosome-associated membrane protein type 2A (LAMP2A), the CMA receptor, has been identified as a main reason for declined CMA in aging. Here, we report constitutive activation of CMA with calorie restriction (CR), an intervention that extends healthspan, in old rodent livers and in an in vitro model of CR with cultured fibroblasts. We found that CR-mediated upregulation of CMA is due to improved stability of LAMP2A at the lysosome membrane. We also explore the translational value of our observations using calorie-restriction mimetics (CRMs), pharmacologically active substances that reproduce the biochemical and functional effects of CR. We show that acute treatment of old mice with CRMs also robustly activates CMA in several tissues and that this activation is required for the higher resistance to lipid dietary challenges conferred by treatment with CRMs. We conclude that part of the beneficial effects associated with CR/CRMs could be a consequence of the constitutive activation of CMA mediated by these interventions.
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Affiliation(s)
- Maryam Jafari
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Adrián Macho-González
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Antonio Diaz
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Kristen Lindenau
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Olaya Santiago-Fernández
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Mei Zeng
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Ashish C. Massey
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Rafael de Cabo
- Translational Gerontology Branch, National Institute on Aging, Baltimore, MD21224
| | - Susmita Kaushik
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
| | - Ana Maria Cuervo
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, BronxNY10461
- Institute for Aging Research, Albert Einstein College of Medicine, Bronx, NY10461
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY10461
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3
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Jia Q, Li J, Guo X, Li Y, Wu Y, Peng Y, Fang Z, Zhang X. Neuroprotective effects of chaperone-mediated autophagy in neurodegenerative diseases. Neural Regen Res 2024; 19:1291-1298. [PMID: 37905878 PMCID: PMC11467915 DOI: 10.4103/1673-5374.385848] [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: 03/20/2023] [Revised: 05/30/2023] [Accepted: 07/17/2023] [Indexed: 11/02/2023] Open
Abstract
ABSTRACT Chaperone-mediated autophagy is one of three types of autophagy and is characterized by the selective degradation of proteins. Chaperone-mediated autophagy contributes to energy balance and helps maintain cellular homeostasis, while providing nutrients and support for cell survival. Chaperone-mediated autophagy activity can be detected in almost all cells, including neurons. Owing to the extreme sensitivity of neurons to their environmental changes, maintaining neuronal homeostasis is critical for neuronal growth and survival. Chaperone-mediated autophagy dysfunction is closely related to central nervous system diseases. It has been shown that neuronal damage and cell death are accompanied by chaperone-mediated autophagy dysfunction. Under certain conditions, regulation of chaperone-mediated autophagy activity attenuates neurotoxicity. In this paper, we review the changes in chaperone-mediated autophagy in neurodegenerative diseases, brain injury, glioma, and autoimmune diseases. We also summarize the most recent research progress on chaperone-mediated autophagy regulation and discuss the potential of chaperone-mediated autophagy as a therapeutic target for central nervous system diseases.
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Affiliation(s)
- Qi Jia
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi’an, Shaanxi Province, China
| | - Jin Li
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi’an, Shaanxi Province, China
- Department of Critical Care Medicine, Air Force Medical Center, Beijing, China
| | - Xiaofeng Guo
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi’an, Shaanxi Province, China
| | - Yi Li
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi’an, Shaanxi Province, China
| | - You Wu
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi’an, Shaanxi Province, China
| | - Yuliang Peng
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi’an, Shaanxi Province, China
| | - Zongping Fang
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi’an, Shaanxi Province, China
- Translational Research Institute of Brain and Brain-Like Intelligence, Shanghai Fourth People’s Hospital, School of Medicine, Tongji University, Shanghai, China
| | - Xijing Zhang
- Department of Anesthesiology and Perioperative Medicine and Department of Intensive Care Unit, Xijing Hospital, The Fourth Military Medical University, Xi’an, Shaanxi Province, China
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Burtscher J, Duderstadt Y, Gatterer H, Burtscher M, Vozdek R, Millet GP, Hicks AA, Ehrenreich H, Kopp M. Hypoxia Sensing and Responses in Parkinson's Disease. Int J Mol Sci 2024; 25:1759. [PMID: 38339038 PMCID: PMC10855464 DOI: 10.3390/ijms25031759] [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: 12/28/2023] [Revised: 01/26/2024] [Accepted: 01/28/2024] [Indexed: 02/12/2024] Open
Abstract
Parkinson's disease (PD) is associated with various deficits in sensing and responding to reductions in oxygen availability (hypoxia). Here we summarize the evidence pointing to a central role of hypoxia in PD, discuss the relation of hypoxia and oxygen dependence with pathological hallmarks of PD, including mitochondrial dysfunction, dopaminergic vulnerability, and alpha-synuclein-related pathology, and highlight the link with cellular and systemic oxygen sensing. We describe cases suggesting that hypoxia may trigger Parkinsonian symptoms but also emphasize that the endogenous systems that protect from hypoxia can be harnessed to protect from PD. Finally, we provide examples of preclinical and clinical research substantiating this potential.
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Affiliation(s)
- Johannes Burtscher
- Institute of Sport Sciences, University of Lausanne, 1015 Lausanne, Switzerland;
| | - Yves Duderstadt
- Division of Cardiology and Angiology, University Hospital Magdeburg, 39120 Magdeburg, Germany;
- Research Group Neuroprotection, German Center for Neurodegenerative Diseases (DZNE), 39120 Magdeburg, Germany
- Department of Sports Science, Otto-von-Guericke University, 39120 Magdeburg, Germany
| | - Hannes Gatterer
- Institute of Mountain Emergency Medicine, Eurac Research, 39100 Bolzano, Italy;
| | - Martin Burtscher
- Department of Sport Science, University of Innsbruck, 6020 Innsbruck, Austria; (M.B.); (M.K.)
| | - Roman Vozdek
- Institute for Biomedicine, Eurac Research, Via Alessandro Volta 21, 39100 Bolzano, Italy; (R.V.); (A.A.H.)
| | - Grégoire P. Millet
- Institute of Sport Sciences, University of Lausanne, 1015 Lausanne, Switzerland;
| | - Andrew A. Hicks
- Institute for Biomedicine, Eurac Research, Via Alessandro Volta 21, 39100 Bolzano, Italy; (R.V.); (A.A.H.)
| | - Hannelore Ehrenreich
- Clinical Neuroscience, Max Planck Institute for Multidisciplinary Sciences, 37075 Goettingen, Germany;
- Experimental Medicine, Central Institute of Mental Health, Medical Faculty Mannheim, Heidelberg University, 68159 Mannheim, Germany
| | - Martin Kopp
- Department of Sport Science, University of Innsbruck, 6020 Innsbruck, Austria; (M.B.); (M.K.)
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Janssen Daalen JM, Koopman WJH, Saris CGJ, Meinders MJ, Thijssen DHJ, Bloem BR. The Hypoxia Response Pathway: A Potential Intervention Target in Parkinson's Disease? Mov Disord 2024; 39:273-293. [PMID: 38140810 DOI: 10.1002/mds.29688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 11/20/2023] [Accepted: 11/28/2023] [Indexed: 12/24/2023] Open
Abstract
Parkinson's disease (PD) is a progressive neurodegenerative disorder for which only symptomatic treatments are available. Both preclinical and clinical studies suggest that moderate hypoxia induces evolutionarily conserved adaptive mechanisms that enhance neuronal viability and survival. Therefore, targeting the hypoxia response pathway might provide neuroprotection by ameliorating the deleterious effects of mitochondrial dysfunction and oxidative stress, which underlie neurodegeneration in PD. Here, we review experimental studies regarding the link between PD pathophysiology and neurophysiological adaptations to hypoxia. We highlight the mechanistic differences between the rescuing effects of chronic hypoxia in neurodegeneration and short-term moderate hypoxia to improve neuronal resilience, termed "hypoxic conditioning". Moreover, we interpret these preclinical observations regarding the pharmacological targeting of the hypoxia response pathway. Finally, we discuss controversies with respect to the differential effects of hypoxia response pathway activation across the PD spectrum, as well as intervention dosing in hypoxic conditioning and potential harmful effects of such interventions. We recommend that initial clinical studies in PD should focus on the safety, physiological responses, and mechanisms of hypoxic conditioning, as well as on repurposing of existing pharmacological compounds. © 2023 International Parkinson and Movement Disorder Society.
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Affiliation(s)
- Jules M Janssen Daalen
- Center of Expertise for Parkinson and Movement Disorders, Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Nijmegen, the Netherlands, Nijmegen, The Netherlands
- Department of Neurology, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behavior, Nijmegen, The Netherlands
- Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Werner J H Koopman
- Department of Pediatrics, Amalia Children's Hospital, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands
- Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
- Human and Animal Physiology, Wageningen University, Wageningen, The Netherlands
| | - Christiaan G J Saris
- Department of Neurology, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behavior, Nijmegen, The Netherlands
- Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Marjan J Meinders
- Center of Expertise for Parkinson and Movement Disorders, Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Nijmegen, the Netherlands, Nijmegen, The Netherlands
| | - Dick H J Thijssen
- Department of Physiology, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Bastiaan R Bloem
- Center of Expertise for Parkinson and Movement Disorders, Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Nijmegen, the Netherlands, Nijmegen, The Netherlands
- Department of Neurology, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behavior, Nijmegen, The Netherlands
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6
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Marzoog BA. Autophagy as an Anti-senescent in Aging Neurocytes. Curr Mol Med 2024; 24:182-190. [PMID: 36683318 DOI: 10.2174/1566524023666230120102718] [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: 07/31/2022] [Revised: 11/23/2022] [Accepted: 11/28/2022] [Indexed: 01/24/2023]
Abstract
Neuron homeostasis is crucial for the organism, and its maintenance is multifactorial, including autophagy. The turnover of aberrant intracellular components is a fundamental pathogenetic mechanism for cell aging. Autophagy is involved in the acceleration of the neurocyte aging process and the modification of cell longevity. Neurocyte aging is a process of loss of cell identity through cellular and subcellular changes that include molecular loss of epigenetics, transcriptomic, proteomic, and autophagy dysfunction. Autophagy dysfunction is the hallmark of neurocyte aging. Cell aging is the credential feature of neurodegenerative diseases. Pathophysiologically, aged neurocytes are characterized by dysregulated autophagy and subsequently neurocyte metabolic stress, resulting in accelerated neurocyte aging. In particular, chaperone- mediated autophagy perturbation results in upregulated expression of aging and apoptosis genes. Aged neurocytes are also characterized by the down-regulation of autophagy-related genes, such as ATG5-ATG12, LC3-II / LC3-I ratio, Beclin-1, and p62. Slowing aging through autophagy targeting is sufficient to improve prognosis in neurodegenerative diseases. Three primary anti-senescent molecules are involved in the aging process: mTOR, AMPK, and Sirtuins. Autophagy therapeutic effects can be applied to reverse and slow aging. This article discusses current advances in the role of autophagy in neurocyte homeostasis, aging, and potential therapeutic strategies to reduce aging and increase cell longevity.
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Affiliation(s)
- Basheer Abdullah Marzoog
- National Research Mordovia State University, Bolshevitskaya Street, 68, Saransk, 430005, Rep. Mordovia, Russia
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Wu J, Han Y, Xu H, Sun H, Wang R, Ren H, Wang G. Deficient chaperone-mediated autophagy facilitates LPS-induced microglial activation via regulation of the p300/NF-κB/NLRP3 pathway. SCIENCE ADVANCES 2023; 9:eadi8343. [PMID: 37801503 PMCID: PMC10558133 DOI: 10.1126/sciadv.adi8343] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/21/2023] [Accepted: 09/06/2023] [Indexed: 10/08/2023]
Abstract
Neuroinflammation is a pathological change that is involved in the progression of Parkinson's disease. Dysfunction of chaperone-mediated autophagy (CMA) has proinflammatory effects. However, the mechanism by which CMA mediates inflammation and whether CMA affects microglia and microglia-mediated neuronal damage remain to be elucidated. In the present study, we found that LAMP2A, a limiting protein for CMA, was decreased in lipopolysaccharide (LPS)-treated primary microglia. Activation of CMA by the activator CA significantly repressed LPS-induced microglial activation, whereas CMA dysfunction exacerbated microglial activation. We further identified that the protein p300 was a substrate of CMA. Degradation of p300 by CMA reduced p65 acetylation, thereby inhibiting the transcription of proinflammatory factors and the activation of the NLRP3 inflammasome. Furthermore, CA pretreatment inhibited microglia-mediated inflammation and, in turn, attenuated neuronal death in vitro and in vivo. Our findings suggest repressive effects of CMA on microglial activation through the p300-associated NF-κB signaling pathway, thus uncovering a mechanistic link between CMA and neuroinflammation.
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Affiliation(s)
- Jin Wu
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Yingying Han
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Hao Xu
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Hongyang Sun
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Rui Wang
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Haigang Ren
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
| | - Guanghui Wang
- Laboratory of Molecular Neuropathology, Department of Pharmacology, Jiangsu Key Laboratory of Neuropsychiatric Diseases and College of Pharmaceutical Sciences, Soochow University, Suzhou 215123, Jiangsu, China
- MOE Key Laboratory, Soochow University, Suzhou 215123, Jiangsu, China
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8
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Yao R, Shen J. Chaperone-mediated autophagy: Molecular mechanisms, biological functions, and diseases. MedComm (Beijing) 2023; 4:e347. [PMID: 37655052 PMCID: PMC10466100 DOI: 10.1002/mco2.347] [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: 12/15/2022] [Revised: 07/23/2023] [Accepted: 07/27/2023] [Indexed: 09/02/2023] Open
Abstract
Chaperone-mediated autophagy (CMA) is a lysosomal degradation pathway that eliminates substrate proteins through heat-shock cognate protein 70 recognition and lysosome-associated membrane protein type 2A-assisted translocation. It is distinct from macroautophagy and microautophagy. In recent years, the regulatory mechanisms of CMA have been gradually enriched, including the newly discovered NRF2 and p38-TFEB signaling, as positive and negative regulatory pathways of CMA, respectively. Normal CMA activity is involved in the regulation of metabolism, aging, immunity, cell cycle, and other physiological processes, while CMA dysfunction may be involved in the occurrence of neurodegenerative disorders, tumors, intestinal disorders, atherosclerosis, and so on, which provides potential targets for the treatment and prediction of related diseases. This article describes the general process of CMA and its role in physiological activities and summarizes the connection between CMA and macroautophagy. In addition, human diseases that concern the dysfunction or protective role of CMA are discussed. Our review deepens the understanding of the mechanisms and physiological functions of CMA and provides a summary of past CMA research and a vision of future directions.
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Affiliation(s)
- Ruchen Yao
- Division of Gastroenterology and HepatologyKey Laboratory of Gastroenterology and HepatologyMinistry of Health, Inflammatory Bowel Disease Research CenterShanghaiChina
- Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
- Shanghai Institute of Digestive DiseaseShanghaiChina
| | - Jun Shen
- Division of Gastroenterology and HepatologyKey Laboratory of Gastroenterology and HepatologyMinistry of Health, Inflammatory Bowel Disease Research CenterShanghaiChina
- Renji Hospital, School of MedicineShanghai Jiao Tong UniversityShanghaiChina
- Shanghai Institute of Digestive DiseaseShanghaiChina
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9
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Binder MJ, Pedley AM. The roles of molecular chaperones in regulating cell metabolism. FEBS Lett 2023; 597:1681-1701. [PMID: 37287189 PMCID: PMC10984649 DOI: 10.1002/1873-3468.14682] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 05/22/2023] [Accepted: 05/29/2023] [Indexed: 06/09/2023]
Abstract
Fluctuations in nutrient and biomass availability, often as a result of disease, impart metabolic challenges that must be overcome in order to sustain cell survival and promote proliferation. Cells adapt to these environmental changes and stresses by adjusting their metabolic networks through a series of regulatory mechanisms. Our understanding of these rewiring events has largely been focused on those genetic transformations that alter protein expression and the biochemical mechanisms that change protein behavior, such as post-translational modifications and metabolite-based allosteric modulators. Mounting evidence suggests that a class of proteome surveillance proteins called molecular chaperones also can influence metabolic processes. Here, we summarize several ways the Hsp90 and Hsp70 chaperone families act on human metabolic enzymes and their supramolecular assemblies to change enzymatic activities and metabolite flux. We further highlight how these chaperones can assist in the translocation and degradation of metabolic enzymes. Collectively, these studies provide a new view for how metabolic processes are regulated to meet cellular demand and inspire new avenues for therapeutic intervention.
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10
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Byun JK, Lee SH, Moon EJ, Park MH, Jang H, Weitzel DH, Kim HH, Basnet N, Kwon DY, Lee CT, Stephenson TN, Jeong JH, Patel BA, Park SJ, Chi JT, Dewhirst MW, Hong J, Lee YM. Manassantin A inhibits tumour growth under hypoxia through the activation of chaperone-mediated autophagy by modulating Hsp90 activity. Br J Cancer 2023; 128:1491-1502. [PMID: 36759727 PMCID: PMC10070431 DOI: 10.1038/s41416-023-02148-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Revised: 01/04/2023] [Accepted: 01/10/2023] [Indexed: 02/11/2023] Open
Abstract
BACKGROUND Chaperon-mediated autophagy (CMA) has taken on a new emphasis in cancer biology. However, the roles of CMA in hypoxic tumours are poorly understood. We investigated the anti-tumour effects of the natural product ManA through the activation of CMA in tumour progression under hypoxia. METHODS The effect of ManA on CMA activation was assessed in mouse xenograft models and cells. The gene expressions of HIF-1α, HSP90AA1, and transcription factor EB (TFEB) were analysed using The Cancer Genome Atlas (TCGA) datasets to assess the clinical relevance of CMA. RESULTS ManA activates photoswitchable CMA reporter activity and inhibits Hsp90 chaperone function by disrupting the Hsp90/F1F0-ATP synthase complex. Hsp90 inhibition enhances the interaction between CMA substrates and LAMP-2A and TFEB nuclear localisation, suggesting CMA activation by ManA. ManA-activated CMA retards tumour growth and displays cooperative anti-tumour activity with anti-PD-1 antibody. TCGA datasets show that a combined expression of HSP90AA1High/HIF1AHigh or TFEBLow/HIF1AHigh is strongly correlated with poor prognosis in patients with lung cancer. CONCLUSIONS ManA-induced CMA activation by modulating Hsp90 under hypoxia induces HIF-1α degradation and reduces tumour growth. Thus, inducing CMA activity by targeting Hsp90 may be a promising therapeutic strategy against hypoxic tumours.
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Affiliation(s)
- Jun-Kyu Byun
- College of Pharmacy, Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea
| | - Sun Hee Lee
- College of Pharmacy, Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea
- Vessel-Organ Interaction Research Center, VOICE (MRC), Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea
| | - Eui Jung Moon
- MRC Oxford Institute for Radiation Oncology, Department of Oncology, University of Oxford, Headington, OX3 7DQ, UK
| | - Myo-Hyeon Park
- College of Pharmacy, Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea
- Vessel-Organ Interaction Research Center, VOICE (MRC), Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea
| | - Hyeonha Jang
- College of Pharmacy, Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea
- Vessel-Organ Interaction Research Center, VOICE (MRC), Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea
| | - Douglas H Weitzel
- Department of Radiation Oncology, Duke University Medical Center, Durham, NC, 27710, USA
| | - Hyun-Hwi Kim
- College of Pharmacy and Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon, 21936, Republic of Korea
| | - Nikita Basnet
- College of Pharmacy, Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea
| | - Do-Yeon Kwon
- Department of Chemistry, Duke University, Durham, NC, 27708, USA
| | - Chen-Ting Lee
- Department of Radiation Oncology, Duke University Medical Center, Durham, NC, 27710, USA
| | | | - Ji-Hak Jeong
- College of Pharmacy, Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea
- Vessel-Organ Interaction Research Center, VOICE (MRC), Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea
| | - Bhargav A Patel
- Department of Chemistry and Biochemistry, University of Notre Dame, South Bend, IN, 46556, USA
| | - Sung Jean Park
- College of Pharmacy and Gachon Institute of Pharmaceutical Sciences, Gachon University, Incheon, 21936, Republic of Korea
| | - Jen-Tsan Chi
- Department of Molecular Genetics & Microbiology, Duke University Medical Center, Durham, NC, 27710, USA
- Center for Genomic and Computation Biology, Duke University Medical Center, Durham, NC, 27710, USA
| | - Mark W Dewhirst
- Department of Radiation Oncology, Duke University Medical Center, Durham, NC, 27710, USA
| | - Jiyong Hong
- Department of Chemistry, Duke University, Durham, NC, 27708, USA.
- Department of Pharmacology and Cancer Biology, Duke University School of Medicine, Durham, NC, 27710, USA.
| | - You Mie Lee
- College of Pharmacy, Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea.
- Vessel-Organ Interaction Research Center, VOICE (MRC), Kyungpook National University, 80 Daehak-ro, Buk-gu, 41566, Daegu, Republic of Korea.
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11
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Zhang Z, Zhang X, Wu X, Zhang Y, Lu J, Li D. Sirt1 attenuates astrocyte activation via modulating Dnajb1 and chaperone-mediated autophagy after closed head injury. Cereb Cortex 2022; 32:5191-5205. [PMID: 35106540 DOI: 10.1093/cercor/bhac007] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2021] [Revised: 01/04/2022] [Accepted: 01/04/2022] [Indexed: 12/27/2022] Open
Abstract
Our previous study indicates that Silent information regulator 1 (Sirt1) is involved in macroautophagy by upregulating light chain 3 (LC3) expression in astrocyte to exert a neuroprotective effect. Chaperon-mediated autophagy (CMA), another form of autophagy, is also upregulated after brain injury. However, little is known about the role of Sirt1 in regulation of the CMA. In the present study, an in vivo model of closed head injury (CHI) and an in vitro model of primary cortical astrocyte stimulated with interleukin-1β were employed to mimic the astrocyte activation induced by traumatic brain injury. Lentivirus carrying target complementary DNA (cDNA) or short hairpin RNA (shRNA) sequence was used to overexpress Sirt1 or knockdown DnaJ heat shock protein family member B1 (Dnajb1) (a molecular chaperone). We found that Sirt1 overexpression ameliorated neurological deficits, reduced tissue loss, and attenuated astrocyte activation after CHI, which was reversed by Dnajb1-shRNA administration. The upregulation of CMA activity induced by CHI in vivo and in vitro was inhibited after Dnajb1 knockdown. Sirt1 potently promoted CMA activity via upregulating Dnajb1 expression. Mechanically, Sirt1 could interact with Dnajb1 and modulate the deacetylation and ubiquitination of Dnajb1. These findings collectively suggest that Sirt1 plays a protective role against astrocyte activation, which may be associated with the regulation of the CMA activity via modulating the deacetylation and ubiquitination of Dnajb1 after CHI.
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Affiliation(s)
- Zhuo Zhang
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning Province, P.R. China
| | - Xu Zhang
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning Province, P.R. China
| | - Xin Wu
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning Province, P.R. China
| | - Yan Zhang
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning Province, P.R. China
| | - Jie Lu
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning Province, P.R. China
| | - Dan Li
- Department of Human Anatomy, College of Basic Medical Sciences, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang 110122, Liaoning Province, P.R. China
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12
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Zhang HY, Tian Y, Shi HY, Cai Y, Xu Y. The critical role of the endolysosomal system in cerebral ischemia. Neural Regen Res 2022; 18:983-990. [PMID: 36254978 PMCID: PMC9827782 DOI: 10.4103/1673-5374.355745] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
Abstract
Cerebral ischemia is a serious disease that triggers sequential pathological mechanisms, leading to significant morbidity and mortality. Although most studies to date have typically focused on the lysosome, a single organelle, current evidence supports that the function of lysosomes cannot be separated from that of the endolysosomal system as a whole. The associated membrane fusion functions of this system play a crucial role in the biodegradation of cerebral ischemia-related products. Here, we review the regulation of and the changes that occur in the endolysosomal system after cerebral ischemia, focusing on the latest research progress on membrane fusion function. Numerous proteins, including N-ethylmaleimide-sensitive factor and lysosomal potassium channel transmembrane protein 175, regulate the function of this system. However, these proteins are abnormally expressed after cerebral ischemic injury, which disrupts the normal fusion function of membranes within the endolysosomal system and that between autophagosomes and lysosomes. This results in impaired "maturation" of the endolysosomal system and the collapse of energy metabolism balance and protein homeostasis maintained by the autophagy-lysosomal pathway. Autophagy is the final step in the endolysosomal pathway and contributes to maintaining the dynamic balance of the system. The process of autophagosome-lysosome fusion is a necessary part of autophagy and plays a crucial role in maintaining energy homeostasis and clearing aging proteins. We believe that, in cerebral ischemic injury, the endolysosomal system should be considered as a whole rather than focusing on the lysosome. Understanding how this dynamic system is regulated will provide new ideas for the treatment of cerebral ischemia.
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Affiliation(s)
- Hui-Yi Zhang
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Ye Tian
- Department of Orthopedics, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Han-Yan Shi
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Ya Cai
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China
| | - Ying Xu
- Department of Anesthesiology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province, China,Correspondence to: Ying Xu, .
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13
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Fu HY, Cui Y, Li Q, Wang D, Li H, Yang L, Wang DJ, Zhou JW. LAMP-2A ablation in hippocampal CA1 astrocytes confers cerebroprotection and ameliorates neuronal injury after global brain ischemia. Brain Pathol 2022; 33:e13114. [PMID: 36059143 PMCID: PMC10041161 DOI: 10.1111/bpa.13114] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2022] [Accepted: 08/10/2022] [Indexed: 11/30/2022] Open
Abstract
Reactive astrogliosis and neuronal death are major features of brain tissue damage after transient global cerebral ischemia/reperfusion (I/R). The CA1 subfield in the hippocampus is particularly susceptible to cell death after I/R. Recently, attention has focused on the relationship between the autophagy-lysosomal pathway and cerebral ischemia. Lysosomal-associated membrane protein type-2A (LAMP-2A) is a key protein in chaperone-mediated autophagy (CMA). However, LAMP-2A expression in astrocytes of the hippocampus and its influence on brain injury following I/R remain unknown. Here, we show that LAMP-2A is elevated in astrocytes of the CA1 hippocampal subfield after I/R and in primary cultured astrocytes after transient oxygen-glucose deprivation (OGD). Conditional LAMP-2A knockdown in CA1 astrocytes inhibited astrocyte activation and prevented neuronal death by inhibiting the mitochondrial pathway of apoptosis after I/R, suggesting that elevated astrocytic LAMP-2A contributes to regional ischemic vulnerability. Furthermore, astrocytic LAMP-2A ablation ameliorated the spatial learning and memory deficits caused by I/R. Conditional astrocytic LAMP-2A knockdown also prevented the loss of hippocampal synapses and dendritic spines, improved the synaptic ultrastructure, and inhibited the reduced expression of synaptic proteins after ischemia. Thus, our findings demonstrate that astrocytic LAMP-2A expression increases upon I/R and that LAMP-2A ablation specifically in hippocampal astrocytes contributes to cerebroprotection, suggesting a novel neuroprotective strategy for patients with global ischemia.
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Affiliation(s)
- Han-Yu Fu
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou, China
| | - Yang Cui
- Schools of Life Science, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Qiao Li
- Schools of Life Science, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Ding Wang
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou, China
| | - Hui Li
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou, China
| | - Long Yang
- Department of Neurology, Affiliated Hospital of Xuzhou Medical University, Xuzhou, China
| | - De-Juan Wang
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou, China
| | - Jing-Wei Zhou
- Jiangsu Key Laboratory of Brain Disease Bioinformation, Research Center for Biochemistry and Molecular Biology, Xuzhou Medical University, Xuzhou, China.,Schools of Life Science, Xuzhou Medical University, Xuzhou, Jiangsu, China
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14
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Modulating Chaperone-Mediated Autophagy and Its Clinical Applications in Cancer. Cells 2022; 11:cells11162562. [PMID: 36010638 PMCID: PMC9406970 DOI: 10.3390/cells11162562] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 08/14/2022] [Accepted: 08/15/2022] [Indexed: 11/25/2022] Open
Abstract
Autophagy is a central mechanism for maintaining cellular homeostasis in health and disease as it provides the critical energy through the breakdown and recycling of cellular components and molecules within lysosomes. One of the three types of autophagy is chaperone-mediated autophagy (CMA), a degradation pathway selective for soluble cytosolic proteins that contain a targeting motif related to KFERQ in their amino acid sequence. This motif marks them as CMA substrate and is, in the initial step of CMA, recognised by the heat shock protein 70 (Hsc70). The protein complex is then targeted to the lysosomal membrane where the interaction with the splice variant A of the lysosomal-associated membrane protein-2 (LAMP-2A) results in its unfolding and translocation into the lysosome for degradation. Altered levels of CMA have been reported in a wide range of pathologies including many cancer types that upregulate CMA as part of the pro-tumorigenic phenotype, while in aging a decline is observed and associated with a decrease of LAMP-2 expression. The potential of altering CMA to modify a physiological or pathological process has been firmly established through genetic manipulation in animals and chemical interference with this pathway. However, its use for therapeutic purposes has remained limited. Compounds used to target and modify CMA have been applied successfully to gain a better understanding of its cellular mechanisms, but they are mostly not specific, also influence other autophagic pathways and are associated with high levels of toxicity. Here, we will focus on the molecular mechanisms involved in CMA regulation as well as on potential ways to intersect them, describe modulators successfully used, their mechanism of action and therapeutic potential. Furthermore, we will discuss the potential benefits and drawbacks of CMA modulation in diseases such as cancer.
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15
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Gómez-Virgilio L, Silva-Lucero MDC, Flores-Morelos DS, Gallardo-Nieto J, Lopez-Toledo G, Abarca-Fernandez AM, Zacapala-Gómez AE, Luna-Muñoz J, Montiel-Sosa F, Soto-Rojas LO, Pacheco-Herrero M, Cardenas-Aguayo MDC. Autophagy: A Key Regulator of Homeostasis and Disease: An Overview of Molecular Mechanisms and Modulators. Cells 2022; 11:cells11152262. [PMID: 35892559 PMCID: PMC9329718 DOI: 10.3390/cells11152262] [Citation(s) in RCA: 42] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 07/07/2022] [Accepted: 07/11/2022] [Indexed: 01/18/2023] Open
Abstract
Autophagy is a highly conserved lysosomal degradation pathway active at basal levels in all cells. However, under stress conditions, such as a lack of nutrients or trophic factors, it works as a survival mechanism that allows the generation of metabolic precursors for the proper functioning of the cells until the nutrients are available. Neurons, as post-mitotic cells, depend largely on autophagy to maintain cell homeostasis to get rid of damaged and/or old organelles and misfolded or aggregated proteins. Therefore, the dysfunction of this process contributes to the pathologies of many human diseases. Furthermore, autophagy is highly active during differentiation and development. In this review, we describe the current knowledge of the different pathways, molecular mechanisms, factors that induce it, and the regulation of mammalian autophagy. We also discuss its relevant role in development and disease. Finally, here we summarize several investigations demonstrating that autophagic abnormalities have been considered the underlying reasons for many human diseases, including liver disease, cardiovascular, cerebrovascular diseases, neurodegenerative diseases, neoplastic diseases, cancers, and, more recently, infectious diseases, such as SARS-CoV-2 caused COVID-19 disease.
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Affiliation(s)
- Laura Gómez-Virgilio
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
| | - Maria-del-Carmen Silva-Lucero
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
| | - Diego-Salvador Flores-Morelos
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico-Biológicas, Universidad Autónoma de Guerrero, Chilpancingo de los Bravo 39070, Guerrero, Mexico;
| | - Jazmin Gallardo-Nieto
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
- Biotechnology Engeniering, Universidad Politécnica de Quintana Roo, Cancún 77500, Quintana Roo, Mexico
| | - Gustavo Lopez-Toledo
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
| | - Arminda-Mercedes Abarca-Fernandez
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
- Biotechnology Engeniering, Universidad Politécnica de Quintana Roo, Cancún 77500, Quintana Roo, Mexico
| | - Ana-Elvira Zacapala-Gómez
- Laboratorio de Biomedicina Molecular, Facultad de Ciencias Químico-Biológicas, Universidad Autónoma de Guerrero, Chilpancingo de los Bravo 39070, Guerrero, Mexico;
| | - José Luna-Muñoz
- National Dementia BioBank, Ciencias Biológicas, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlan Izcalli 53150, Estado de México, Mexico; (J.L.-M.); (F.M.-S.)
- Banco Nacional de Cerebros-UNPHU, Universidad Nacional Pedro Henríquez Ureña, Santo Domingo 11805, Dominican Republic
| | - Francisco Montiel-Sosa
- National Dementia BioBank, Ciencias Biológicas, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de México, Cuautitlan Izcalli 53150, Estado de México, Mexico; (J.L.-M.); (F.M.-S.)
| | - Luis O. Soto-Rojas
- Laboratorio de Patogénesis Molecular, Laboratorio 4, Edificio A4, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla 54090, Estado de México, Mexico;
- Red MEDICI, Carrera Médico Cirujano, Facultad de Estudios Superiores Iztacala, Universidad Nacional Autónoma de México, Tlalnepantla 54090, Estado de México, Mexico
| | - Mar Pacheco-Herrero
- Neuroscience Research Laboratory, Faculty of Health Sciences, Pontificia Universidad Católica Madre y Maestra, Santiago de los Caballeros 51000, Dominican Republic;
| | - Maria-del-Carmen Cardenas-Aguayo
- Laboratory of Cellular Reprogramming, Departamento de Fisiología, Facultad de Medicina, Universidad Nacional Autonoma de Mexico, Mexico City 04510, Mexico; (L.G.-V.); (M.-d.-C.S.-L.); (D.-S.F.-M.); (J.G.-N.); (G.L.-T.); (A.-M.A.-F.)
- Correspondence: ; Tel.: +52-55-2907-0937
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16
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Churilova A, Zachepilo T, Baranova K, Rybnikova E. Differences in the Autophagy Response to Hypoxia in the Hippocampus and Neocortex of Rats. Int J Mol Sci 2022; 23:ijms23148002. [PMID: 35887346 PMCID: PMC9320385 DOI: 10.3390/ijms23148002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 02/01/2023] Open
Abstract
Autophagy is a regulated mechanism of degradation of misfolded proteins and organelles in the cell. Neurons are highly differentiated cells with extended projections, and therefore, their functioning largely depends on the mechanisms of autophagy. For the first time in an animal model using immunohistochemistry, dot analysis, and qRT-PCR, the autophagy (macroautophagy) activity in neurons of two brain regions (hippocampus and neocortex) under normoxia and after exposure to hypoxia was studied. It was found that under normoxia, the autophagic activity was higher in the hippocampal neurons than in the neocortex of rats. In the hippocampus, the exposure of rats to hypoxia resulted in a decrease in the content of autophagy markers LC3 and p62, which was followed by activation of the autophagy-related gene expression. In the neocortex, no changes in these marker proteins were observed after the exposure to hypoxia. These data indicate that the neurons in the hippocampus and neocortex differ in the autophagy response to hypoxia, which may reflect the physiological and functional differences of the pyramidal cells of these brain regions and may to some extent account for the extreme vulnerability of the CA1 hippocampal neurons and relatively high resistance of the neocortical neurons to hypoxia.
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Affiliation(s)
- Anna Churilova
- Laboratory of Regulation of Brain Neuron Functions, Pavlov Institute of Physiology RAS, 199034 Saint-Petersburg, Russia; (A.C.); (K.B.)
| | - Tatiana Zachepilo
- Laboratory of Genetics of Higher Nervous Activity, Pavlov Institute of Physiology RAS, 199034 Saint-Petersburg, Russia;
| | - Ksenia Baranova
- Laboratory of Regulation of Brain Neuron Functions, Pavlov Institute of Physiology RAS, 199034 Saint-Petersburg, Russia; (A.C.); (K.B.)
| | - Elena Rybnikova
- Laboratory of Regulation of Brain Neuron Functions, Pavlov Institute of Physiology RAS, 199034 Saint-Petersburg, Russia; (A.C.); (K.B.)
- Correspondence: ; Tel.: +7-911-954-1596
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17
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Chaperone-Mediated Autophagy in Neurodegenerative Diseases: Molecular Mechanisms and Pharmacological Opportunities. Cells 2022; 11:cells11142250. [PMID: 35883693 PMCID: PMC9323300 DOI: 10.3390/cells11142250] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2022] [Revised: 07/12/2022] [Accepted: 07/15/2022] [Indexed: 11/23/2022] Open
Abstract
Chaperone-mediated autophagy (CMA) is a protein degradation mechanism through lysosomes. By targeting the KFERQ motif of the substrate, CMA is responsible for the degradation of about 30% of cytosolic proteins, including a series of proteins associated with neurodegenerative diseases (NDs). The fact that decreased activity of CMA is observed in NDs, and ND-associated mutant proteins, including alpha-synuclein and Tau, directly impair CMA activity reveals a possible vicious cycle of CMA impairment and pathogenic protein accumulation in ND development. Given the intrinsic connection between CMA dysfunction and ND, enhancement of CMA has been regarded as a strategy to counteract ND. Indeed, genetic and pharmacological approaches to modulate CMA have been shown to promote the degradation of ND-associated proteins and alleviate ND phenotypes in multiple ND models. This review summarizes the current knowledge on the mechanism of CMA with a focus on its relationship with NDs and discusses the therapeutic potential of CMA modulation for ND.
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18
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Madrigal-Matute J, de Bruijn J, van Kuijk K, Riascos-Bernal DF, Diaz A, Tasset I, Martín-Segura A, Gijbels MJJ, Sander B, Kaushik S, Biessen EAL, Tiano S, Bourdenx M, Krause GJ, McCracken I, Baker AH, Jin H, Sibinga NES, Bravo-Cordero JJ, Macian F, Singh R, Rensen PCN, Berbée JFP, Pasterkamp G, Sluimer JC, Cuervo AM. Protective role of chaperone-mediated autophagy against atherosclerosis. Proc Natl Acad Sci U S A 2022; 119:e2121133119. [PMID: 35363568 PMCID: PMC9168839 DOI: 10.1073/pnas.2121133119] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Accepted: 02/14/2022] [Indexed: 12/11/2022] Open
Abstract
Chaperone-mediated autophagy (CMA) contributes to regulation of energy homeostasis by timely degradation of enzymes involved in glucose and lipid metabolism. Here, we report reduced CMA activity in vascular smooth muscle cells and macrophages in murine and human arteries in response to atherosclerotic challenges. We show that in vivo genetic blockage of CMA worsens atherosclerotic pathology through both systemic and cell-autonomous changes in vascular smooth muscle cells and macrophages, the two main cell types involved in atherogenesis. CMA deficiency promotes dedifferentiation of vascular smooth muscle cells and a proinflammatory state in macrophages. Conversely, a genetic mouse model with up-regulated CMA shows lower vulnerability to proatherosclerotic challenges. We propose that CMA could be an attractive therapeutic target against cardiovascular diseases.
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Affiliation(s)
- Julio Madrigal-Matute
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Jenny de Bruijn
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
| | - Kim van Kuijk
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
- Institute of Experimental Medicine and Systems Biology, Faculty of Medicine, RWTH Aachen University, 52074 Aachen, Germany
| | | | - Antonio Diaz
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Inmaculada Tasset
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Adrián Martín-Segura
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Marion J. J. Gijbels
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
- School for Oncology and Developmental Biology (GROW), Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
- Department of Medical Biochemistry, Experimental Vascular Biology, Amsterdam University Medical Centers, University of Amsterdam, 1081 HV Amsterdam, The Netherlands
| | - Bianca Sander
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
| | - Susmita Kaushik
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Erik A. L. Biessen
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
- Institute for Molecular Cardiovascular Research, RWTH Aachen University, 52074 Aachen, Germany
| | - Simoni Tiano
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Mathieu Bourdenx
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Gregory J. Krause
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Ian McCracken
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Andrew H. Baker
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Han Jin
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
| | - Nicholas E. S. Sibinga
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Jose Javier Bravo-Cordero
- Division of Hematology and Medical Oncology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York, NY 10029
| | - Fernando Macian
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
- Department of Pathology, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Rajat Singh
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461
| | - Patrick C. N. Rensen
- Section of Endocrinology, Department of Internal Medicine, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Jimmy F. P. Berbée
- Section of Endocrinology, Department of Internal Medicine, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
- Einthoven Laboratory for Experimental Vascular Medicine, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
| | - Gerard Pasterkamp
- Experimental Cardiology Laboratory, Department of Cardiology, University Medical Center Utrecht, 3584 CX Utrecht, The Netherlands
| | - Judith C. Sluimer
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, 6229 HX Maastricht, The Netherlands
- Centre for Cardiovascular Science, University of Edinburgh, Edinburgh EH16 4TJ, United Kingdom
| | - Ana Maria Cuervo
- Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461
- Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461
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19
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Chaperone-Mediated Autophagy in Neurodegenerative Diseases and Acute Neurological Insults in the Central Nervous System. Cells 2022; 11:cells11071205. [PMID: 35406769 PMCID: PMC8997510 DOI: 10.3390/cells11071205] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/27/2022] [Accepted: 03/30/2022] [Indexed: 12/12/2022] Open
Abstract
Autophagy is an important function that mediates the degradation of intracellular proteins and organelles. Chaperone-mediated autophagy (CMA) degrades selected proteins and has a crucial role in cellular proteostasis under various physiological and pathological conditions. CMA dysfunction leads to the accumulation of toxic protein aggregates in the central nervous system (CNS) and is involved in the pathogenic process of neurodegenerative diseases, including Parkinson’s disease and Alzheimer’s disease. Previous studies have suggested that the activation of CMA to degrade aberrant proteins can provide a neuroprotective effect in the CNS. Recent studies have shown that CMA activity is upregulated in damaged neural tissue following acute neurological insults, such as cerebral infarction, traumatic brain injury, and spinal cord injury. It has been also suggested that various protein degradation mechanisms are important for removing toxic aberrant proteins associated with secondary damage after acute neurological insults in the CNS. Therefore, enhancing the CMA pathway may induce neuroprotective effects not only in neurogenerative diseases but also in acute neurological insults. We herein review current knowledge concerning the biological mechanisms involved in CMA and highlight the role of CMA in neurodegenerative diseases and acute neurological insults. We also discuss the possibility of developing CMA-targeted therapeutic strategies for effective treatments.
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20
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Liao PC, Yang EJ, Borgman T, Boldogh IR, Sing CN, Swayne TC, Pon LA. Touch and Go: Membrane Contact Sites Between Lipid Droplets and Other Organelles. Front Cell Dev Biol 2022; 10:852021. [PMID: 35281095 PMCID: PMC8908909 DOI: 10.3389/fcell.2022.852021] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2022] [Accepted: 02/03/2022] [Indexed: 12/26/2022] Open
Abstract
Lipid droplets (LDs) have emerged not just as storage sites for lipids but as central regulators of metabolism and organelle quality control. These critical functions are achieved, in part, at membrane contact sites (MCS) between LDs and other organelles. MCS are sites of transfer of cellular constituents to or from LDs for energy mobilization in response to nutrient limitations, as well as LD biogenesis, expansion and autophagy. Here, we describe recent findings on the mechanisms underlying the formation and function of MCS between LDs and mitochondria, ER and lysosomes/vacuoles and the role of the cytoskeleton in promoting LD MCS through its function in LD movement and distribution in response to environmental cues.
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Affiliation(s)
- Pin-Chao Liao
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY, United States
- Institute of Molecular Medicine, National Tsing Hua University, Hsinchu, Taiwan
| | - Emily J. Yang
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY, United States
| | - Taylor Borgman
- Institute of Human Nutrition, Columbia University Irving Medical Center, New York, NY, United States
| | - Istvan R. Boldogh
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY, United States
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, United States
| | - Cierra N. Sing
- Institute of Human Nutrition, Columbia University Irving Medical Center, New York, NY, United States
| | - Theresa C. Swayne
- Herbert Irving Comprehensive Cancer Center, Columbia University Irving Medical Center, New York, NY, United States
| | - Liza A. Pon
- Department of Pathology and Cell Biology, Columbia University Irving Medical Center, New York, NY, United States
- Institute of Human Nutrition, Columbia University Irving Medical Center, New York, NY, United States
- *Correspondence: Liza A. Pon,
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21
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Liu Y, Xue C, Lu H, Zhou Y, Guan R, Wang J, Zhang Q, Ke T, Aschner M, Zhang W, Luo W. Hypoxia causes mitochondrial dysfunction and brain memory disorder in a manner mediated by the reduction of Cirbp. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 806:151228. [PMID: 34715218 DOI: 10.1016/j.scitotenv.2021.151228] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/14/2021] [Revised: 10/03/2021] [Accepted: 10/22/2021] [Indexed: 06/13/2023]
Abstract
Environmental hypoxic hazard has increasingly become a global public health issue, with impelling evidences supporting the relation between hypoxia and cognitive disorders. As a potent stressor, hypoxia causes mitochondrial dysfunction with insufficient energy production, thus the formation of brain memory disorder. Yet, the underlying molecular mechanism/s against hypoxia induced injury have yet to be identified. Here, we report that cold inducible RNA binding protein (Cirbp) attenuates hypoxia induced insufficient energy production and oxidative stress. Further analyses show that Cirbp sustains protein levels of respiratory chain complexes II (SDHB) and IV (MT-CO1), and directly binds the 3'UTR of Atp5g3 to control mitochondrial homeostasis and ATP biogenesis upon hypoxic stress. Altogether, our data establish Cirbp as a critical protective factor against hypoxic health hazard and provide novel insights into its latent regulation network.
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Affiliation(s)
- Ying Liu
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Chong Xue
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Huanyu Lu
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Yang Zhou
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Ruili Guan
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Jiye Wang
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Qian Zhang
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China
| | - Tao Ke
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, United States of America
| | - Michael Aschner
- Department of Molecular Pharmacology, Albert Einstein College of Medicine, New York, United States of America
| | - Wenbin Zhang
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China.
| | - Wenjing Luo
- Department of Occupational and Environmental Health, Fourth Military Medical University, Ministry of Education Key Lab of Hazard Assessment and Control in Special Operational Environment, Shaanxi Key Laboratory of Free Radical Biology and Medicine, Xi'an 710032, China.
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22
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Gómez-Sintes R, Arias E. Chaperone-mediated autophagy and disease: Implications for cancer and neurodegeneration. Mol Aspects Med 2021; 82:101025. [PMID: 34629183 DOI: 10.1016/j.mam.2021.101025] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Revised: 09/10/2021] [Accepted: 09/12/2021] [Indexed: 02/07/2023]
Abstract
Chaperone-mediated autophagy (CMA) is a proteolytic process whereby selected intracellular proteins are degraded inside lysosomes. Owing to its selectivity, CMA participates in the modulation of specific regulatory proteins, thereby playing an important role in multiple cellular processes. Studies conducted over the last two decades have enabled the molecular characterization of this autophagic pathway and the design of specific experimental models, and have underscored the importance of CMA in a range of physiological processes beyond mere protein quality control. Those findings also indicate that decreases in CMA function with increasing age may contribute to the pathogenesis of age-associated diseases, including neurodegeneration and cancer. In the context of neurological diseases, CMA impairment is thought to contribute to the accumulation of misfolded/aggregated proteins, a process central to the pathogenesis of neurodegenerative diseases. CMA therefore constitutes a potential therapeutic target, as its induction accelerates the clearance of pathogenic proteins, promoting cell survival. More recent evidence has highlighted the important and complex role of CMA in cancer biology. While CMA induction may limit tumor development, experimental evidence also indicates that inhibition of this pathway can attenuate the growth of established tumors and improve the response to cancer therapeutics. Here, we describe and discuss the evidence supporting a role of impaired CMA function in neurodegeneration and cancer, as well as future research directions to evaluate the potential of this pathway as a target for the prevention and treatment of these diseases.
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Affiliation(s)
- Raquel Gómez-Sintes
- Department of Cellular and Molecular Biology, Centro de Investigaciones Biológicas Margarita Salas CIB-CSIC, 28040, Madrid, Spain; Department of Developmental and Molecular Biology & Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
| | - Esperanza Arias
- Department of Medicine, Marion Bessin Liver Research Center & Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, 10461, USA.
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23
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Correia SC, Moreira PI. Oxygen Sensing and Signaling in Alzheimer's Disease: A Breathtaking Story! Cell Mol Neurobiol 2021; 42:3-21. [PMID: 34510330 DOI: 10.1007/s10571-021-01148-6] [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: 05/07/2021] [Accepted: 09/07/2021] [Indexed: 10/20/2022]
Abstract
Oxygen sensing and homeostasis is indispensable for the maintenance of brain structural and functional integrity. Under low-oxygen tension, the non-diseased brain has the ability to cope with hypoxia by triggering a homeostatic response governed by the highly conserved hypoxia-inducible family (HIF) of transcription factors. With the advent of advanced neuroimaging tools, it is now recognized that cerebral hypoperfusion, and consequently hypoxia, is a consistent feature along the Alzheimer's disease (AD) continuum. Of note, the reduction in cerebral blood flow and tissue oxygenation detected during the prodromal phases of AD, drastically aggravates as disease progresses. Within this scenario a fundamental question arises: How HIF-driven homeostatic brain response to hypoxia "behaves" during the AD continuum? In this sense, the present review is aimed to critically discuss and summarize the current knowledge regarding the involvement of hypoxia and HIF signaling in the onset and progression of AD pathology. Importantly, the promises and challenges of non-pharmacological and pharmacological strategies aimed to target hypoxia will be discussed as a new "hope" to prevent and/or postpone the neurodegenerative events that occur in the AD brain.
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Affiliation(s)
- Sónia C Correia
- CNC - Center for Neuroscience and Cell Biology, Faculty of Medicine, University of Coimbra, Rua Larga, Polo I, 1st Floor, 3004-504, Coimbra, Portugal. .,CIBB - Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal. .,Institute for Interdisciplinary Research, University of Coimbra, Coimbra, Portugal.
| | - Paula I Moreira
- CNC - Center for Neuroscience and Cell Biology, Faculty of Medicine, University of Coimbra, Rua Larga, Polo I, 1st Floor, 3004-504, Coimbra, Portugal.,CIBB - Center for Innovative Biomedicine and Biotechnology, University of Coimbra, Coimbra, Portugal.,Laboratory of Physiology, Faculty of Medicine, University of Coimbra, 3000-548, Coimbra, Portugal
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24
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Lestón Pinilla L, Ugun-Klusek A, Rutella S, De Girolamo LA. Hypoxia Signaling in Parkinson's Disease: There Is Use in Asking "What HIF?". BIOLOGY 2021; 10:723. [PMID: 34439955 PMCID: PMC8389254 DOI: 10.3390/biology10080723] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/23/2021] [Accepted: 07/27/2021] [Indexed: 12/23/2022]
Abstract
Hypoxia is a condition characterized by insufficient tissue oxygenation, which results in impaired oxidative energy production. A reduction in cellular oxygen levels induces the stabilization of hypoxia inducible factor α (HIF-1α), master regulator of the molecular response to hypoxia, involved in maintaining cellular homeostasis and driving hypoxic adaptation through the control of gene expression. Due to its high energy requirement, the brain is particularly vulnerable to oxygen shortage. Thus, hypoxic injury can cause significant metabolic changes in neural cell populations, which are associated with neurodegeneration. Recent evidence suggests that regulating HIF-1α may ameliorate the cellular damage in neurodegenerative diseases. Indeed, the hypoxia/HIF-1α signaling pathway has been associated to several processes linked to Parkinson's disease (PD) including gene mutations, risk factors and molecular pathways such as mitochondrial dysfunction, oxidative stress and protein degradation impairment. This review will explore the impact of hypoxia and HIF-1α signaling on these specific molecular pathways that influence PD development and will evaluate different novel neuroprotective strategies involving HIF-1α stabilization.
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Affiliation(s)
- Laura Lestón Pinilla
- Interdisciplinary Biomedical Research Centre, Centre for Health, Ageing and Understanding Disease, School of Science & Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK;
| | - Aslihan Ugun-Klusek
- Interdisciplinary Biomedical Research Centre, Centre for Health, Ageing and Understanding Disease, School of Science & Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK;
| | - Sergio Rutella
- John van Geest Cancer Research Centre, Centre for Health, Ageing and Understanding Disease, School of Science & Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK;
| | - Luigi A. De Girolamo
- Interdisciplinary Biomedical Research Centre, Centre for Health, Ageing and Understanding Disease, School of Science & Technology, Nottingham Trent University, Clifton Lane, Nottingham NG11 8NS, UK;
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25
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Wang Y, Zhang B, Wang J, Wu H, Xu S, Zhang J, Wang L. Discovery of LAMP-2A as potential biomarkers for glioblastoma development by modulating apoptosis through N-CoR degradation. Cell Commun Signal 2021; 19:40. [PMID: 33761934 PMCID: PMC7992845 DOI: 10.1186/s12964-021-00729-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 02/22/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Lysosome-associated membrane protein type 2A (LAMP-2A) is the key component of chaperone-mediated autophagy (CMA), a cargo-selective lysosomal degradation pathway. Aberrant LAMP-2A expression and CMA activation have been demonstrated in various human malignancies. The study focusing on the intrinsic role of LAMP-2A and CMA in glioblastoma (GBM), and downstream mechanism could provide valuable insight into the pathogenesis and novel therapeutic modality of GBM. METHODS The levels of LAMP-2A, nuclear receptor co-repressor (N-CoR), unfolded protein response (UPR) and apoptosis were examined in clinical samples. LAMP-2A siRNA and shRNA were constructed to manipulate CMA activation. The role of CMA and downstream mechanism through degradation of N-CoR and arresting UPR mediated apoptosis were explored in GBM cells and nude mouse xenograft model. RESULTS Elevated LAMP-2A and associated decreased N-CoR expression were observed in GBM as compared with peritumoral region and low-grade glioma. Inhibited UPR and apoptosis were observed in GBM with high LAMP-2A expression. In vitro study demonstrated co-localization and interaction between LAMP-2A and N-CoR. LAMP-2A silencing up-regulated N-CoR and aroused UPR pathway, leading to apoptosis, while N-CoR silencing led to an opposite result. In vivo study further confirmed that LAMP-2A inhibition arrested tumor growth by promoting apoptosis. CONCLUSIONS Our results demonstrated the central role of CMA in mediating N-CoR degradation and protecting GBM cells against UPR and apoptosis, and provided evidence of LAMP-2A as potential biomarker. Further research focusing on CMA with other tumorigenic process is needed and selective modulators of LAMP-2A remain to be investigated to provide a novel therapeutic strategy for GBM. Video Abstract.
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Affiliation(s)
- Yongjie Wang
- Department of Neurosurgery, 2Nd Affiliated Hospital, School of Medicine, Zhejiang University, 88# Jiefang Road, Hangzhou, 310009 Zhejiang China
| | - Buyi Zhang
- Department of Pathology, 2Nd Affiliated Hospital, School of Medicine, Zhejiang University, 88# Jiefang Road, Hangzhou, 310009 Zhejiang China
| | - Jianli Wang
- Department of Neurosurgery, 2Nd Affiliated Hospital, School of Medicine, Zhejiang University, 88# Jiefang Road, Hangzhou, 310009 Zhejiang China
| | - Haijian Wu
- Department of Neurosurgery, 2Nd Affiliated Hospital, School of Medicine, Zhejiang University, 88# Jiefang Road, Hangzhou, 310009 Zhejiang China
| | - Shenbin Xu
- Department of Neurosurgery, 2Nd Affiliated Hospital, School of Medicine, Zhejiang University, 88# Jiefang Road, Hangzhou, 310009 Zhejiang China
| | - Jianmin Zhang
- Department of Neurosurgery, 2Nd Affiliated Hospital, School of Medicine, Zhejiang University, 88# Jiefang Road, Hangzhou, 310009 Zhejiang China
| | - Lin Wang
- Department of Neurosurgery, 2Nd Affiliated Hospital, School of Medicine, Zhejiang University, 88# Jiefang Road, Hangzhou, 310009 Zhejiang China
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26
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Auzmendi-Iriarte J, Matheu A. Impact of Chaperone-Mediated Autophagy in Brain Aging: Neurodegenerative Diseases and Glioblastoma. Front Aging Neurosci 2021; 12:630743. [PMID: 33633561 PMCID: PMC7901968 DOI: 10.3389/fnagi.2020.630743] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Accepted: 12/21/2020] [Indexed: 12/11/2022] Open
Abstract
Brain aging is characterized by a time-dependent decline of tissue integrity and function, and it is a major risk for neurodegenerative diseases and brain cancer. Chaperone-mediated autophagy (CMA) is a selective form of autophagy specialized in protein degradation, which is based on the individual translocation of a cargo protein through the lysosomal membrane. Regulation of processes such as proteostasis, cellular energetics, or immune system activity has been associated with CMA, indicating its pivotal role in tissue homeostasis. Since first studies associating Parkinson’s disease (PD) to CMA dysfunction, increasing evidence points out that CMA is altered in both physiological and pathological brain aging. In this review article, we summarize the current knowledge regarding the impact of CMA during aging in brain physiopathology, highlighting the role of CMA in neurodegenerative diseases and glioblastoma, the most common and aggressive brain tumor in adults.
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Affiliation(s)
| | - Ander Matheu
- Cellular Oncology Group, Biodonostia Health Research Institute, San Sebastian, Spain.,CIBER de Fragilidad y Envejecimiento Saludable (CIBERfes), Madrid, Spain.,IKERBASQUE, Basque Foundation, Bilbao, Spain
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27
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Kouroumalis E, Voumvouraki A, Augoustaki A, Samonakis DN. Autophagy in liver diseases. World J Hepatol 2021; 13:6-65. [PMID: 33584986 PMCID: PMC7856864 DOI: 10.4254/wjh.v13.i1.6] [Citation(s) in RCA: 34] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2020] [Revised: 12/10/2020] [Accepted: 12/26/2020] [Indexed: 02/06/2023] Open
Abstract
Autophagy is the liver cell energy recycling system regulating a variety of homeostatic mechanisms. Damaged organelles, lipids and proteins are degraded in the lysosomes and their elements are re-used by the cell. Investigations on autophagy have led to the award of two Nobel Prizes and a health of important reports. In this review we describe the fundamental functions of autophagy in the liver including new data on the regulation of autophagy. Moreover we emphasize the fact that autophagy acts like a two edge sword in many occasions with the most prominent paradigm being its involvement in the initiation and progress of hepatocellular carcinoma. We also focused to the implication of autophagy and its specialized forms of lipophagy and mitophagy in the pathogenesis of various liver diseases. We analyzed autophagy not only in well studied diseases, like alcoholic and nonalcoholic fatty liver and liver fibrosis but also in viral hepatitis, biliary diseases, autoimmune hepatitis and rare diseases including inherited metabolic diseases and also acetaminophene hepatotoxicity. We also stressed the different consequences that activation or impairment of autophagy may have in hepatocytes as opposed to Kupffer cells, sinusoidal endothelial cells or hepatic stellate cells. Finally, we analyzed the limited clinical data compared to the extensive experimental evidence and the possible future therapeutic interventions based on autophagy manipulation.
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Affiliation(s)
- Elias Kouroumalis
- Liver Research Laboratory, University of Crete Medical School, Heraklion 71110, Greece
| | - Argryro Voumvouraki
- 1 Department of Internal Medicine, AHEPA University Hospital, Thessaloniki 54636, Greece
| | - Aikaterini Augoustaki
- Department of Gastroenterology and Hepatology, University Hospital of Crete, Heraklion 71110, Greece
| | - Dimitrios N Samonakis
- Department of Gastroenterology and Hepatology, University Hospital of Crete, Heraklion 71110, Greece.
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28
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Liao Z, Wang B, Liu W, Xu Q, Hou L, Song J, Guo Q, Li N. Dysfunction of chaperone-mediated autophagy in human diseases. Mol Cell Biochem 2021; 476:1439-1454. [PMID: 33389491 DOI: 10.1007/s11010-020-04006-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2020] [Accepted: 11/24/2020] [Indexed: 12/19/2022]
Abstract
Chaperone-mediated autophagy (CMA), one of the degradation pathways of proteins, is highly selective to substrates that have KFERQ-like motif. In this process, the substrate proteins are first recognized by the chaperone protein, heat shock cognate protein 70 (Hsc70), then delivered to lysosomal membrane surface where the single-span lysosomal receptor, lysosome-associated membrane protein type 2A (LAMP2A) can bind to the substrate proteins to form a 700 kDa protein complex that allows them to translocate into the lysosome lumen to be degraded by the hydrolytic enzymes. This degradation pathway mediated by CMA plays an important role in regulating glucose and lipid metabolism, transcription, DNA reparation, cell cycle, cellular response to stress and consequently, regulating many aging-associated human diseases, such as neurodegeneration, cancer and metabolic disorders. In this review, we provide an overview of current research on the functional roles of CMA primarily from a perspective of understanding and treating human diseases and also discuss its potential applications for diseases.
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Affiliation(s)
- Zhaozhong Liao
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Bin Wang
- College of Electronic Information, Micro-Nano Technology College, Qingdao University, Qingdao, China
| | - Wenjing Liu
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Qian Xu
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Lin Hou
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, China
| | - Jinlian Song
- Department of Laboratory, The Affiliated Women and Children's Hospital of Qingdao University, Qingdao University, Qingdao, China
| | - Qingming Guo
- Biotherapy Center, Clinical Laboratory, Qingdao Central Hospital, The Second Affiliated Hospital of Qingdao University, Qingdao, China
| | - Ning Li
- Department of Biochemistry and Molecular Biology, School of Basic Medicine, Qingdao University, Qingdao, China.
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29
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Xiong C, Du Z, Zhu Y, Xue M, Jiang Y, Zhong Y, Jiang L, Chen H, Shi M. Mycophenolate mofetil preconditioning protects mouse liver against ischemia/reperfusion injury in wild type and toll-like receptor 4 knockout mice. Transpl Immunol 2020; 65:101357. [PMID: 33279598 DOI: 10.1016/j.trim.2020.101357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Revised: 11/28/2020] [Accepted: 11/28/2020] [Indexed: 11/18/2022]
Abstract
BACKGROUND Mycophenolate mofetil (MMF), an immunosuppressive drug, exerts anti-inflammatory effects on organs during ischemia/reperfusion (I/R) injury. However, the exact function of MMF in hepatic I/R injury remains largely unknown. The purpose of this study was to explore the role and potential mechanism of MMF protection in hepatic I/R injury. METHODS Male wild type (WT) and TLR4 knockout (KO) mice were injected intraperitoneally with MMF or normal saline. Animals underwent 90 min of partial hepatic ischemia, followed by 1, 6, or 24 h of reperfusion. Hepatic histology, serum amiotransferase, inflammatory cytokines, hepatocyte apoptosis, and hepatocyte autophagy were examined to assess liver injury. RESULTS Treatment with MMF significantly decreased hepatic I/R injury as indicated by a reduction in serum aminotransferase levels, Suzuki scores, and the overall degree of necrosis. MMF treatment inhibited TLR4 activation dramatically. MMF administration also significantly inhibited the activation of the NF-κB pathway and the expression of pro-inflammatory cytokines. In TLR4 KO mice, MMF still exerted protection from hepatic I/R injury. MMF treatment inhibited hepatocyte apoptosis, as indicated by reduced TUNEL staining, and reduced the accumulation of cleaved caspase-3. In addition, MMF may induce autophagy and increase autophagic flux before and after hepatic reperfusion by augmenting the expression of LC3-II, P62, and Beclin-1. The induction of autophagy by MMF treatment may be related to TLR4 activation. CONCLUSIONS Our results indicate that MMF treatment ameliorates hepatic I/R injury. The mechanism of action likely involves the ability of MMF to decrease apoptosis and the inflammatory response while inducing autophagy.
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Affiliation(s)
- Cheng Xiong
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Zhendong Du
- Department of Laboratory Medicine, Renji Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Youwei Zhu
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Meilin Xue
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Yongsheng Jiang
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yiming Zhong
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China
| | - Lingxi Jiang
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Hao Chen
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China.
| | - Minmin Shi
- Department of General Surgery, Pancreatic disease center, Ruijin Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China; Research Institute of Pancreatic Disease, Shanghai Jiaotong University School of Medicine, Shanghai, China; State Key Laboratory of Oncogenes and Related Genes, China; Institute of Translational Medicine, Shanghai Jiaotong University School of Medicine, Shanghai, China.
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30
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Kaludercic N, Maiuri MC, Kaushik S, Fernández ÁF, de Bruijn J, Castoldi F, Chen Y, Ito J, Mukai R, Murakawa T, Nah J, Pietrocola F, Saito T, Sebti S, Semenzato M, Tsansizi L, Sciarretta S, Madrigal-Matute J. Comprehensive autophagy evaluation in cardiac disease models. Cardiovasc Res 2020; 116:483-504. [PMID: 31504266 PMCID: PMC7064050 DOI: 10.1093/cvr/cvz233] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 08/01/2019] [Accepted: 08/22/2019] [Indexed: 12/24/2022] Open
Abstract
Autophagy is a highly conserved recycling mechanism essential for maintaining cellular homeostasis. The pathophysiological role of autophagy has been explored since its discovery 50 years ago, but interest in autophagy has grown exponentially over the last years. Many researchers around the globe have found that autophagy is a critical pathway involved in the pathogenesis of cardiac diseases. Several groups have created novel and powerful tools for gaining deeper insights into the role of autophagy in the aetiology and development of pathologies affecting the heart. Here, we discuss how established and emerging methods to study autophagy can be used to unravel the precise function of this central recycling mechanism in the cardiac system.
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Affiliation(s)
- Nina Kaludercic
- Neuroscience Institute, Department of Biomedical Sciences, National Research Council of Italy (CNR), 35131, Padova, Italy
| | - Maria Chiara Maiuri
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université Paris Descartes, Université Paris Diderot, 75006, Paris, France
| | - Susmita Kaushik
- Department of Developmental and Molecular Biology, Institute for Aging Studies, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY, 10461, USA
| | - Álvaro F Fernández
- Center for Autophagy Research, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Jenny de Bruijn
- Department of Pathology, Cardiovascular Research Institute (CARIM), Maastricht University, P. Debyelaan 25, 6229 HX, Maastricht, The Netherlands; Institute of Molecular Cardiovascular Research (IMCAR), RWTH Aachen, University, Pauwelsstrase 30, 52074, Aachen, Germany
| | - Francesca Castoldi
- Centre de Recherche des Cordeliers, INSERM, Sorbonne Université, Université Paris Descartes, Université Paris Diderot, 75006, Paris, France
| | - Yun Chen
- Departments of Medicine (Cardiology) and Cell Biology, Wilf Family Cardiovascular Research Institute, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY, 10461, USA
| | - Jumpei Ito
- The School of Cardiovascular Medicine and Sciences, King's College London British Heart Foundation Centre of Excellence, London SE5 9NU, UK
| | - Risa Mukai
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers New Jersey Medical School, 185 South Orange Avenue, Newark, NY, USA
| | - Tomokazu Murakawa
- The School of Cardiovascular Medicine and Sciences, King's College London British Heart Foundation Centre of Excellence, London SE5 9NU, UK
| | - Jihoon Nah
- Department of Cell Biology and Molecular Medicine, Cardiovascular Research Institute, Rutgers New Jersey Medical School, 185 South Orange Avenue, Newark, NY, USA
| | - Federico Pietrocola
- Cellular Plasticity and Disease Laboratory. Institute for Research in Biomedicine (IRB Barcelona), Barcelona; Institute of Science and Technology (BIST), Barcelona, Spain
| | - Toshiro Saito
- Department of Surgery and Clinical Science, Graduate School of Medicine, Yamaguchi University, 1-1-1 Minami-Kogushi, Ube, Yamaguchi 755-8505, Japan
| | - Salwa Sebti
- Center for Autophagy Research, Department of Internal Medicine, University of Texas Southwestern Medical Center, Dallas, TX, 75390, USA
| | - Martina Semenzato
- Department of Biology, University of Padua, Via U Bassi 58B, 35121, Padua, Italy.,Venetian Institute of Molecular Medicine, Via Orus 2, 35129, Padua, Italy
| | - Lorenza Tsansizi
- Department of Biology, University of Padua, Via U Bassi 58B, 35121, Padua, Italy.,Venetian Institute of Molecular Medicine, Via Orus 2, 35129, Padua, Italy
| | - Sebastiano Sciarretta
- Department of Medico-Surgical Sciences and Biotechnologies, Sapienza University of Rome, 04100, Latina, LT, Italy.,Department of AngioCardioNeurology, IRCCS Neuromed, 86077, Pozzilli, IS, Italy
| | - Julio Madrigal-Matute
- Department of Developmental and Molecular Biology, Institute for Aging Studies, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY, 10461, USA
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31
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Andrade-Tomaz M, de Souza I, Ribeiro Reily Rocha C, Rodrigues Gomes L. The Role of Chaperone-Mediated Autophagy in Cell Cycle Control and Its Implications in Cancer. Cells 2020; 9:cells9092140. [PMID: 32971884 PMCID: PMC7565978 DOI: 10.3390/cells9092140] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 09/19/2020] [Accepted: 09/19/2020] [Indexed: 12/11/2022] Open
Abstract
The cell cycle involves a network of proteins that modulate the sequence and timing of proliferation events. Unregulated proliferation is the most fundamental hallmark of cancer; thus, changes in cell cycle control are at the heart of malignant transformation processes. Several cellular processes can interfere with the cell cycle, including autophagy, the catabolic pathway involved in degradation of intracellular constituents in lysosomes. According to the mechanism used to deliver cargo to the lysosome, autophagy can be classified as macroautophagy (MA), microautophagy (MI), or chaperone-mediated autophagy (CMA). Distinct from other autophagy types, CMA substrates are selectively recognized by a cytosolic chaperone, one-by-one, and then addressed for degradation in lysosomes. The function of MA in cell cycle control, and its influence in cancer progression, are already well-established. However, regulation of the cell cycle by CMA, in the context of tumorigenesis, has not been fully addressed. This review aims to present and debate the molecular mechanisms by which CMA can interfere in the cell cycle, in the context of cancer. Thus, cell cycle modulators, such as MYC, hypoxia-inducible factor-1 subunit alpha (HIF-1α), and checkpoint kinase 1 (CHK1), regulated by CMA activity will be discussed. Finally, the review will focus on how CMA dysfunction may impact the cell cycle, and as consequence promote tumorigenesis.
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Affiliation(s)
- Marina Andrade-Tomaz
- Departamento de Oncologia Clínica e Experimental, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04037-003, SP, Brazil; (M.A.-T.); (I.d.S.); (C.R.R.R.)
| | - Izadora de Souza
- Departamento de Oncologia Clínica e Experimental, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04037-003, SP, Brazil; (M.A.-T.); (I.d.S.); (C.R.R.R.)
| | - Clarissa Ribeiro Reily Rocha
- Departamento de Oncologia Clínica e Experimental, Escola Paulista de Medicina, Universidade Federal de São Paulo, São Paulo 04037-003, SP, Brazil; (M.A.-T.); (I.d.S.); (C.R.R.R.)
| | - Luciana Rodrigues Gomes
- Laboratório de Ciclo Celular, Center of Toxins, Immune Response and Cell Signaling (CeTICS), Instituto Butantan, São Paulo 05503-001, SP, Brazil
- Correspondence: ; Tel.: +55-11-2627-3755
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32
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Portovedo M, Reginato A, Miyamoto JÉ, Simino LA, Hakim MP, Campana M, Leal RF, Ignácio-Souza LM, Torsoni MA, Magnan C, Le Stunff H, Torsoni AS, Milanski M. Lipid excess affects chaperone-mediated autophagy in hypothalamus. Biochimie 2020; 176:110-116. [PMID: 32623049 DOI: 10.1016/j.biochi.2020.06.008] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2020] [Revised: 06/16/2020] [Accepted: 06/18/2020] [Indexed: 01/15/2023]
Abstract
Obesity is a major health problem worldwide. Overweight and obesity directly affect health-related quality of life and also have an important economic impact on healthcare systems. In experimental models, obesity leads to hypothalamic inflammation and loss of metabolic homeostasis. It is known that macroautophagy is decreased in the hypothalamus of obese mice but the role of chaperone-mediated autophagy is still unknown. In this study, we aimed to investigate the role of hypothalamic chaperone-mediated autophagy in response to high-fat diet and also the direct effect of palmitate on hypothalamic neurons. Mice received chow or high-fat diet for 3 days or 1 week. At the end of the experimental protocol, chaperone-mediated autophagy in hypothalamus was investigated, as well as cytokines expression. In other set of experiments, neuronal cell lines were treated with palmitic acid, a saturated fatty acid. We show that chaperone-mediated autophagy is differently regulated in response to high-fat diet intake for 3 days or 1 week. Also, when hypothalamic neurons are directly exposed to palmitate there is activation of chaperone-mediated autophagy. High-fat diet causes hypothalamic inflammation concomitantly to changes in the content of chaperone-mediated autophagy machinery. It remains to be studied the direct role of inflammation and lipids itself on the activation of chaperone-mediated autophagy in the hypothalamus in vivo and also the neuronal implications of chaperone-mediated autophagy inhibition in response to obesity.
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Affiliation(s)
- M Portovedo
- Laboratory of Metabolic Disorders, Faculty of Applied Sciences, UNICAMP, Limeira, 13484-350, Brazil
| | - A Reginato
- Laboratory of Metabolic Disorders, Faculty of Applied Sciences, UNICAMP, Limeira, 13484-350, Brazil
| | - J É Miyamoto
- Laboratory of Metabolic Disorders, Faculty of Applied Sciences, UNICAMP, Limeira, 13484-350, Brazil
| | - L A Simino
- Laboratory of Metabolic Disorders, Faculty of Applied Sciences, UNICAMP, Limeira, 13484-350, Brazil
| | - M P Hakim
- Laboratory of Metabolic Disorders, Faculty of Applied Sciences, UNICAMP, Limeira, 13484-350, Brazil
| | - M Campana
- Université de Paris, BFA, UMR 8251, CNRS, F-75013, Paris, France
| | - R F Leal
- IBD Research Laboratory, Colorectal Surgery Unit, Department of Surgery, School of Medical Sciences, UNICAMP, Campinas, 13083-878, Brazil
| | - L M Ignácio-Souza
- Laboratory of Metabolic Disorders, Faculty of Applied Sciences, UNICAMP, Limeira, 13484-350, Brazil
| | - M A Torsoni
- Laboratory of Metabolic Disorders, Faculty of Applied Sciences, UNICAMP, Limeira, 13484-350, Brazil
| | - C Magnan
- Université de Paris, BFA, UMR 8251, CNRS, F-75013, Paris, France
| | - H Le Stunff
- Université de Paris, BFA, UMR 8251, CNRS, F-75013, Paris, France
| | - A S Torsoni
- Laboratory of Metabolic Disorders, Faculty of Applied Sciences, UNICAMP, Limeira, 13484-350, Brazil
| | - M Milanski
- Laboratory of Metabolic Disorders, Faculty of Applied Sciences, UNICAMP, Limeira, 13484-350, Brazil.
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33
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Handa K, Kanno H, Matsuda M, Sugaya T, Murakami T, Prudnikova M, Ozawa H, Itoi E. Chaperone-Mediated Autophagy after Spinal Cord Injury. J Neurotrauma 2020; 37:1687-1695. [PMID: 32233738 DOI: 10.1089/neu.2019.6820] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Autophagy is the degradation process of dysfunctional intracellular components and has a crucial function in various human diseases. There are three different types of autophagy: macroautophagy, microautophagy, and chaperone-mediated autophagy (CMA). CMA is a major route for the elimination of cellular aberrant proteins and can provide a cytoprotective effect. The present study investigated the expression of lysosome-associated membrane protein type 2A (LAMP2A), which is the hallmark of CMA activity, in damaged neural tissue after spinal cord injury (SCI) in mice. The number of LAMP2A-expressing cells was significantly increased at the lesion following SCI. The increased number of LAMP2A-positive cells was observed from 24 h and peaked at 3 days after injury. A western blot analysis confirmed that the level of LAMP2A protein was significantly increased in the injured spinal cord compared with the uninjured cord. On double staining for LAMP2A and different neural cell type markers, the increased expression of LAMP2A was observed in neurons, astrocytes, oligodendrocytes, and microglia/macrophages following injury. An electron microscopic analysis showed that secondary lysosomes were increased in damaged neurons at the lesion site. Immunoelectron microscopy revealed that the gold particles with anti-LAMP2A antibody were frequently localized at the secondary lysosomes in the injured site. These findings indicated that CMA was clearly activated in damaged neural tissue after SCI. The activation of CMA may contribute to the elimination of intracellular aberrant proteins and exert a neuroprotective effect following SCI.
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Affiliation(s)
- Kyoichi Handa
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Haruo Kanno
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Michiharu Matsuda
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takehiro Sugaya
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Taishi Murakami
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Maria Prudnikova
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hiroshi Ozawa
- Department of Orthopedic Surgery, Tohoku Medical and Pharmaceutical University, Faculty of Medicine, Sendai, Japan
| | - Eiji Itoi
- Department of Orthopedic Surgery, Tohoku University Graduate School of Medicine, Sendai, Japan
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34
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Ke PY. Mitophagy in the Pathogenesis of Liver Diseases. Cells 2020; 9:cells9040831. [PMID: 32235615 PMCID: PMC7226805 DOI: 10.3390/cells9040831] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 03/25/2020] [Accepted: 03/27/2020] [Indexed: 02/07/2023] Open
Abstract
Autophagy is a catabolic process involving vacuolar sequestration of intracellular components and their targeting to lysosomes for degradation, thus supporting nutrient recycling and energy regeneration. Accumulating evidence indicates that in addition to being a bulk, nonselective degradation mechanism, autophagy may selectively eliminate damaged mitochondria to promote mitochondrial turnover, a process termed “mitophagy”. Mitophagy sequesters dysfunctional mitochondria via ubiquitination and cargo receptor recognition and has emerged as an important event in the regulation of liver physiology. Recent studies have shown that mitophagy may participate in the pathogenesis of various liver diseases, such as liver injury, liver steatosis/fatty liver disease, hepatocellular carcinoma, viral hepatitis, and hepatic fibrosis. This review summarizes the current knowledge on the molecular regulations and functions of mitophagy in liver physiology and the roles of mitophagy in the development of liver-related diseases. Furthermore, the therapeutic implications of targeting hepatic mitophagy to design a new strategy to cure liver diseases are discussed.
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Affiliation(s)
- Po-Yuan Ke
- Department of Biochemistry & Molecular Biology and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan; ; Tel.: +886-3-211-8800 (ext. 5115); Fax: +886-3-211-8700
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
- Division of Allergy, Immunology, and Rheumatology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan
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35
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Ameri P, Schiattarella GG, Crotti L, Torchio M, Bertero E, Rodolico D, Forte M, Di Mauro V, Paolillo R, Chimenti C, Torella D, Catalucci D, Sciarretta S, Basso C, Indolfi C, Perrino C. Novel Basic Science Insights to Improve the Management of Heart Failure: Review of the Working Group on Cellular and Molecular Biology of the Heart of the Italian Society of Cardiology. Int J Mol Sci 2020; 21:E1192. [PMID: 32054029 PMCID: PMC7072832 DOI: 10.3390/ijms21041192] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 02/04/2020] [Accepted: 02/07/2020] [Indexed: 12/12/2022] Open
Abstract
Despite important advances in diagnosis and treatment, heart failure (HF) remains a syndrome with substantial morbidity and dismal prognosis. Although implementation and optimization of existing technologies and drugs may lead to better management of HF, new or alternative strategies are desirable. In this regard, basic science is expected to give fundamental inputs, by expanding the knowledge of the pathways underlying HF development and progression, identifying approaches that may improve HF detection and prognostic stratification, and finding novel treatments. Here, we discuss recent basic science insights that encompass major areas of translational research in HF and have high potential clinical impact.
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Affiliation(s)
- Pietro Ameri
- IRCCS Ospedale Policlinico San Martino—IRCCS Italian Cardiovascular Network & Department of Internal Medicine, University of Genova, 16132 Genova, Italy;
| | | | - Lia Crotti
- Istituto Auxologico Italiano, IRCCS, Department of Cardiovascular, Neural and Metabolic Sciences, San Luca Hospital, 20149 Milan, Italy;
- Department of Medicine and Surgery, University of Milano-Bicocca, 20126 Milan, Italy
| | - Margherita Torchio
- Istituto Auxologico Italiano, IRCCS, Istituto Auxologico Italiano, Center for Cardiac Arrhythmias of Genetic Origin, and Laboratory of Cardiovascular Genetics, 20095 Milan, Italy;
| | - Edoardo Bertero
- Comprehensive Heart Failure Center (CHFC), University Clinic Würzburg, 97078 Würzburg, Germany;
| | - Daniele Rodolico
- Agostino Gemelli Medical School, Catholic University of the Sacred Heart, 00168 Rome, Italy;
| | - Maurizio Forte
- Department of AngioCardioNeurology, IRCCS Neuromed, 86077 Pozzili, Italy; (M.F.); (S.S.)
| | - Vittoria Di Mauro
- National Research Council (CNR) Institute of Genetics & Biomedical Research, Milan Unit, 20138 Milan, Italy; (V.D.M.); (D.C.)
- Humanitas Clinical and Research Hospital, 20090 Rozzano (MI), Italy
| | - Roberta Paolillo
- Department of Advanced Biomedical Sciences, Federico II University, 80131 Naples, Italy;
| | - Cristina Chimenti
- Department of Cardiovascular, Respiratory, Nephrologic, and Geriatric Sciences, Sapienza University of Rome, 00100 Rome, Italy;
| | - Daniele Torella
- Molecular and Cellular Cardiology Laboratory, Department of Experimental and Clinical Medicine, Magna Graecia University, 88100 Catanzaro, Italy;
| | - Daniele Catalucci
- National Research Council (CNR) Institute of Genetics & Biomedical Research, Milan Unit, 20138 Milan, Italy; (V.D.M.); (D.C.)
- Humanitas Clinical and Research Hospital, 20090 Rozzano (MI), Italy
| | - Sebastiano Sciarretta
- Department of AngioCardioNeurology, IRCCS Neuromed, 86077 Pozzili, Italy; (M.F.); (S.S.)
- Department of Medical and Surgical Sciences and Biotechnologies, Sapienza University of Rome, 04100 Latina, Italy
| | - Cristina Basso
- Cardiovascular Pathology, Department of Cardiac, Thoracic, Vascular Sciences and Public Health, University of Padua, 35121 Padua, Italy;
| | - Ciro Indolfi
- Division of Cardiology, Department of Medical and Surgical Sciences & Center of Cardiovascular Research, Magna Graecia University, 88100 Catanzaro, Italy;
- URT-CNR, Magna Graecia University, 88100 Catanzaro, Italy
| | - Cinzia Perrino
- Department of Advanced Biomedical Sciences, Federico II University, 80131 Naples, Italy;
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36
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Obayashi H, Nagano Y, Takahashi T, Seki T, Tanaka S, Sakai N, Matsumoto M, Maruyama H. Histone deacetylase 10 knockout activates chaperone-mediated autophagy and accelerates the decomposition of its substrate. Biochem Biophys Res Commun 2019; 523:246-252. [PMID: 31862140 DOI: 10.1016/j.bbrc.2019.12.048] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Accepted: 12/10/2019] [Indexed: 01/10/2023]
Abstract
Histone deacetylase (HDAC) 10 is a member of class IIb HDACs, but its deacetylation targets and functions are poorly characterized. Recent investigation has proposed that HDAC10 deacetylates heat shock cognate protein 70 kDa (HSC70) after interaction. HSC70 plays an important role in chaperone-mediated autophagy (CMA), binding CMA substrates and transporting them to lysosomes. However, it has not been clarified whether HDAC10 is involved in CMA. In this study, we established the HDAC10 knockout HeLa cell line and evaluated its CMA activity to determine whether HDAC10 participates in regulating CMA. In HDAC10 knockout cells, lysosome-associated protein type 2A (LAMP2A) protein level increased and LAMP2A-positive lysosomes accumulated around the nucleus. Moreover, GAPDH, which is a well-known CMA substrate, was delivered to LAMP2A-positive lysosomes and degraded in HDAC10 knockout cells more efficiently than in wild type HeLa cells. These results suggest that CMA is activated in HDAC10 knockout cells. Meanwhile, turnover assay using LC3 and p62, which are macroautophagy markers, indicated that autophagic flux was fully functioning in HDAC10 knockout cells as well as in wild type HeLa cells. In conclusion, HDAC10 participated in regulating CMA, and HDAC10 knockout activated CMA and accelerated degradation of a CMA substrate.
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Affiliation(s)
- Hitomi Obayashi
- Department of Clinical Neuroscience and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan
| | - Yoshito Nagano
- Department of Clinical Neuroscience and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan; Mitsubishi Tanabe Pharma, Osaka, 541-8505, Japan.
| | - Tetsuya Takahashi
- Department of Clinical Neuroscience and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan
| | - Takahiro Seki
- Department of Chemico-Pharmacological Sciences, Graduate School of Pharmaceutical Sciences, Kumamoto University, Kumamoto, 862-0973, Japan
| | - Shigeru Tanaka
- Department of Molecular and Pharmacological Neuroscience, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan
| | - Norio Sakai
- Department of Molecular and Pharmacological Neuroscience, Graduate School of Biomedical & Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan
| | | | - Hirofumi Maruyama
- Department of Clinical Neuroscience and Therapeutics, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, 734-8551, Japan
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37
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Pei X, Li Y, Zhu L, Zhou Z. Astrocyte-derived exosomes suppress autophagy and ameliorate neuronal damage in experimental ischemic stroke. Exp Cell Res 2019; 382:111474. [DOI: 10.1016/j.yexcr.2019.06.019] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2019] [Revised: 05/23/2019] [Accepted: 06/17/2019] [Indexed: 12/19/2022]
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38
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Dukay B, Csoboz B, Tóth ME. Heat-Shock Proteins in Neuroinflammation. Front Pharmacol 2019; 10:920. [PMID: 31507418 PMCID: PMC6718606 DOI: 10.3389/fphar.2019.00920] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 07/22/2019] [Indexed: 01/01/2023] Open
Abstract
The heat-shock response, one of the main pro-survival mechanisms of a living organism, has evolved as the biochemical response of cells to cope with heat stress. The most well-characterized aspect of the heat-shock response is the accumulation of a conserved set of proteins termed heat-shock proteins (HSPs). HSPs are key players in protein homeostasis acting as chaperones by aiding the folding and assembly of nascent proteins and protecting against protein aggregation. HSPs have been associated with neurological diseases in the context of their chaperone activity, as they were found to suppress the aggregation of misfolded toxic proteins. In recent times, HSPs have proven to have functions apart from the classical molecular chaperoning in that they play a role in a wider scale of neurological disorders by modulating neuronal survival, inflammation, and disease-specific signaling processes. HSPs are gaining importance based on their ability to fine-tune inflammation and act as immune modulators in various bodily fluids. However, their effect on neuroinflammation processes is not yet fully understood. In this review, we summarize the role of neuroinflammation in acute and chronic pathological conditions affecting the brain. Moreover, we seek to explore the existing literature on HSP-mediated inflammatory function within the central nervous system and compare the function of these proteins when they are localized intracellularly compared to being present in the extracellular milieu.
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Affiliation(s)
- Brigitta Dukay
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary.,Doctoral School in Biology, Faculty of Science and Informatics, University of Szeged, Szeged, Hungary
| | - Bálint Csoboz
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Melinda E Tóth
- Institute of Biochemistry, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
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39
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Abstract
Chaperone-mediated autophagy (CMA) was the first studied process that indicated that degradation of intracellular components by the lysosome can be selective - a concept that is now well accepted for other forms of autophagy. Lysosomes can degrade cellular cytosol in a nonspecific manner but can also discriminate what to target for degradation with the involvement of a degradation tag, a chaperone and a sophisticated mechanism to make the selected proteins cross the lysosomal membrane through a dedicated translocation complex. Recent studies modulating CMA activity in vivo using transgenic mouse models have demonstrated that selectivity confers on CMA the ability to participate in the regulation of multiple cellular functions. Timely degradation of specific cellular proteins by CMA modulates, for example, glucose and lipid metabolism, DNA repair, cellular reprograming and the cellular response to stress. These findings expand the physiological relevance of CMA beyond its originally identified role in protein quality control and reveal that CMA failure with age may aggravate diseases, such as ageing-associated neurodegeneration and cancer.
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Affiliation(s)
- Susmita Kaushik
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA. .,Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA.
| | - Ana Maria Cuervo
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY, USA. .,Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY, USA.
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40
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Bar-Yosef T, Damri O, Agam G. Dual Role of Autophagy in Diseases of the Central Nervous System. Front Cell Neurosci 2019; 13:196. [PMID: 31191249 PMCID: PMC6548059 DOI: 10.3389/fncel.2019.00196] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 04/18/2019] [Indexed: 12/14/2022] Open
Abstract
Autophagy is a vital lysosomal degradation and recycling pathway in the eukaryotic cell, responsible for maintaining an intricate balance between cell survival and cell death, necessary for neuronal survival and function. This dual role played by autophagy raises the question whether this process is a protective or a destructive pathway, the contributor of neuronal cell death or a failed attempt to repair aberrant processes? Deregulated autophagy at different steps of the pathway, whether excessive or downregulated, has been proposed to be associated with neurodegenerative disorders such as Alzheimer's-, Huntington's-, and Parkinson's-disease, known for their intracellular accumulation of protein aggregates. Recent observations of impaired autophagy also appeared in psychiatric disorders such as schizophrenia and bipolar disorder suggesting an additional contribution to the pathophysiology of mental illness. Here we review the current understanding of autophagy's role in various neuropsychiatric disorders and, hitherto, the prevailing new potential autophagy-related therapeutic strategies for their treatment.
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Affiliation(s)
- Tamara Bar-Yosef
- Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev and Mental Health Center, Beersheba, Israel
| | - Odeya Damri
- Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev and Mental Health Center, Beersheba, Israel
| | - Galila Agam
- Department of Clinical Biochemistry and Pharmacology and Psychiatry Research Unit, Faculty of Health Sciences, Ben-Gurion University of the Negev and Mental Health Center, Beersheba, Israel
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Ke PY. Diverse Functions of Autophagy in Liver Physiology and Liver Diseases. Int J Mol Sci 2019; 20:E300. [PMID: 30642133 PMCID: PMC6358975 DOI: 10.3390/ijms20020300] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 01/05/2019] [Accepted: 01/08/2019] [Indexed: 01/09/2023] Open
Abstract
Autophagy is a catabolic process by which eukaryotic cells eliminate cytosolic materials through vacuole-mediated sequestration and subsequent delivery to lysosomes for degradation, thus maintaining cellular homeostasis and the integrity of organelles. Autophagy has emerged as playing a critical role in the regulation of liver physiology and the balancing of liver metabolism. Conversely, numerous recent studies have indicated that autophagy may disease-dependently participate in the pathogenesis of liver diseases, such as liver hepatitis, steatosis, fibrosis, cirrhosis, and hepatocellular carcinoma. This review summarizes the current knowledge on the functions of autophagy in hepatic metabolism and the contribution of autophagy to the pathophysiology of liver-related diseases. Moreover, the impacts of autophagy modulation on the amelioration of the development and progression of liver diseases are also discussed.
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Affiliation(s)
- Po-Yuan Ke
- Department of Biochemistry & Molecular Biology and Graduate Institute of Biomedical Sciences, College of Medicine, Chang Gung University, Taoyuan 33302, Taiwan.
- Liver Research Center, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan.
- Division of Allergy, Immunology, and Rheumatology, Chang Gung Memorial Hospital, Taoyuan 33305, Taiwan.
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Nalivaeva NN, Turner AJ, Zhuravin IA. Role of Prenatal Hypoxia in Brain Development, Cognitive Functions, and Neurodegeneration. Front Neurosci 2018; 12:825. [PMID: 30510498 PMCID: PMC6254649 DOI: 10.3389/fnins.2018.00825] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 10/22/2018] [Indexed: 12/15/2022] Open
Abstract
This review focuses on the role of prenatal hypoxia in the development of brain functions in the postnatal period and subsequent increased risk of neurodegenerative disorders in later life. Accumulating evidence suggests that prenatal hypoxia in critical periods of brain formation results in significant changes in development of cognitive functions at various stages of postnatal life which correlate with morphological changes in brain structures involved in learning and memory. Prenatal hypoxia also leads to a decrease in brain adaptive potential and plasticity due to the disturbance in the process of formation of new contacts between cells and propagation of neuronal stimuli, especially in the cortex and hippocampus. On the other hand, prenatal hypoxia has a significant impact on expression and processing of a variety of genes involved in normal brain function and their epigenetic regulation. This results in changes in the patterns of mRNA and protein expression and their post-translational modifications, including protein misfolding and clearance. Among proteins affected by prenatal hypoxia are a key enzyme of the cholinergic system-acetylcholinesterase, and the amyloid precursor protein (APP), both of which have important roles in brain function. Disruption of their expression and metabolism caused by prenatal hypoxia can also result, apart from early cognitive dysfunctions, in development of neurodegeneration in later life. Another group of enzymes affected by prenatal hypoxia are peptidases involved in catabolism of neuropeptides, including amyloid-β peptide (Aβ). The decrease in the activity of neprilysin and other amyloid-degrading enzymes observed after prenatal hypoxia could result over the years in an Aβ clearance deficit and accumulation of its toxic species which cause neuronal cell death and development of neurodegeneration. Applying various approaches to restore expression of neuronal genes disrupted by prenatal hypoxia during postnatal development opens an avenue for therapeutic compensation of cognitive dysfunctions and prevention of Aβ accumulation in the aging brain and the model of prenatal hypoxia in rodents can be used as a reliable tool for assessment of their efficacy.
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Affiliation(s)
- Natalia N. Nalivaeva
- I. M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
- Faculty of Biological Sciences, School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom
| | - Anthony J. Turner
- Faculty of Biological Sciences, School of Biomedical Sciences, University of Leeds, Leeds, United Kingdom
| | - Igor A. Zhuravin
- I. M. Sechenov Institute of Evolutionary Physiology and Biochemistry, Russian Academy of Sciences, St. Petersburg, Russia
- Research Centre, Saint-Petersburg State Pediatric Medical University, St. Petersburg, Russia
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43
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Nitric oxide mediated redox regulation of protein homeostasis. Cell Signal 2018; 53:348-356. [PMID: 30408515 DOI: 10.1016/j.cellsig.2018.10.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 10/27/2018] [Accepted: 10/29/2018] [Indexed: 12/12/2022]
Abstract
Nitric oxide is a versatile diffusible signaling molecule, whose biosynthesis by three NO synthases (NOS) is tightly regulated at transcriptional and posttranslational levels, availability of co-factors, and calcium binding. Above normal levels of NO have beneficial protective effects for example in the cardiovascular system, but also contribute to the pathophysiology in the context of inflammatory diseases, and to aging and neurodegeneration in the nervous system. The effect specificity relies on the functional and spatial specificity of the NOS isoenzymes, and on the duality of two major signaling mechanisms (i) activation of soluble guanylycylase (sGC)-dependent cGMP production and (ii) direct S-nitrosylation of redox sensitive cysteines of susceptible proteins. The present review summarizes the functional implications of S-nitrosylation in the context of proteostasis, and focuses on two NO target proteins, heat shock cognate of 70 kDa (Hsc70/HSPA8) and the ubiquitin 2 ligase (UBE2D), because both are modified on functionally critical cysteines and are key regulators of chaperone mediated and assisted autophagy and proteasomal protein degradation. SNO modifications of these candidates are associated with protein accumulations and adoption of a senescent phenotype of neuronal cells suggesting that S-nitrosylations of protein homeostatic machineries contribute to aging phenomena.
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Nitric oxide contributes to protein homeostasis by S-nitrosylations of the chaperone HSPA8 and the ubiquitin ligase UBE2D. Redox Biol 2018; 20:217-235. [PMID: 30368041 PMCID: PMC6202877 DOI: 10.1016/j.redox.2018.10.002] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2018] [Revised: 09/25/2018] [Accepted: 10/02/2018] [Indexed: 02/06/2023] Open
Abstract
Upregulations of neuronal nitric oxide synthase (nNOS) in the rodent brain have been associated with neuronal aging. To address underlying mechanisms we generated SH-SY5Y neuronal cells constitutively expressing nNOS at a level similar to mouse brain (nNOS+ versus MOCK). Initial experiments revealed S-nitrosylations (SNO) of key players of protein homeostasis: heat shock cognate HSC70/HSPA8 within its nucleotide-binding site, and UBE2D ubiquitin conjugating enzymes at the catalytic site cysteine. HSPA8 is involved in protein folding, organelle import/export and chaperone-mediated LAMP2a-dependent autophagy (CMA). A set of deep redox and full proteome analyses, plus analysis of autophagy, CMA and ubiquitination with rapamycin and starvation as stimuli confirmed the initial observations and revealed a substantial increase of SNO modifications in nNOS+ cells, in particular targeting protein networks involved in protein catabolism, ubiquitination, carbohydrate metabolism and cell cycle control. Importantly, NO-independent reversible oxidations similarly occurred in both cell lines. Functionally, nNOS caused an accumulation of proteins, including CMA substrates and loss of LAMP2a. UBE2D activity and proteasome activity were impaired, resulting in dysregulations of cell cycle checkpoint proteins. The observed changes of protein degradation pathways caused an expansion of the cytoplasm, large lysosomes, slowing of the cell cycle and suppression of proliferation suggesting a switch of the phenotype towards aging, supported by downregulations of neuronal progenitor markers but increase of senescence-associated proteins. Hence, upregulation of nNOS in neuronal cells imposes aging by SNOing of key players of ubiquitination, chaperones and of substrate proteins leading to interference with crucial steps of protein homeostasis.
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Huang X, Ding J, Li Y, Liu W, Ji J, Wang H, Wang X. Exosomes derived from PEDF modified adipose-derived mesenchymal stem cells ameliorate cerebral ischemia-reperfusion injury by regulation of autophagy and apoptosis. Exp Cell Res 2018; 371:269-277. [PMID: 30142325 DOI: 10.1016/j.yexcr.2018.08.021] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/15/2018] [Accepted: 08/18/2018] [Indexed: 01/02/2023]
Abstract
Increasing evidence suggest that exosomes from mesenchymal stem cells have therapeutic effects in cerebral ischemia-reperfusion (I/R) injury, but the underlying mechanisms are unclear. Pigment epithelium-derived factor (PEDF) is a multifunctional protein that exhibits anti-inflammatory, antioxidative, and neuroprotective properties. We investigated the involvement of PEDF in I/R, using adipose-derived mesenchymal stem cells (ADSCs) isolated from rat. PEDF-overexpressing ADSCs were constructed and exosomes from ADSCs were isolated. SY-5Y cells were employed to identify the protective effects of exosomes in oxygen-glucose deprivation (OGD) experiments. Exosome treatment suppressed OGD-induced apoptosis by inhibiting the two-step caspase dependent (caspase-9 and caspase-3) apoptotic pathway. Increasing the PEDF content of exosomes further promoted the protective effect against OGD-induced apoptosis by activating autophagy, while blocking autophagy reduced the effect of PEDF-containing exosomes. We constructed a middle cerebral artery occlusion-reperfusion (MCAO) model using male Sprague-Dawley rats to identify the role of PEDF in exosome-mediated neuroprotection. These in vivo experiments further confirmed that exosomes from PEDF-modified ADSCs ameliorated cerebral I/R injury by activating autophagy and suppressing neuronal apoptosis. These findings suggest that PEDF plays a role in exosome-mediated prevention of cerebral I/R injury by modulating apoptotic factors and promoting autophagy.
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Affiliation(s)
- Xiao Huang
- Department of Psychological Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China; Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
| | - Jing Ding
- Department of Neurology, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
| | - Yufei Li
- Department of Plastic Surgery, The NO. 455 Hospital of PLA, 338 West Huaihai Rd, Shanghai 200052, China.
| | - Wenjuan Liu
- Department of Psychological Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
| | - Jianlin Ji
- Department of Psychological Medicine, Zhongshan Hospital, Fudan University, Shanghai 200032, China.
| | - Hao Wang
- Teaching Center of Experimental Medicine, Shanghai Medical College, Fudan University, 138 Yixueyuan Rd, Shanghai 200032, China.
| | - Xin Wang
- The State Key Laboratory of Medical Neurobiology, the Institutes of Brain Science and the Collaborative Innovation Center for Brain Science, Fudan University and Department of Neurology, Zhongshan Hospital, Fudan University, 180 Fenglin Road, Shanghai 200032, China.
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Issa AR, Sun J, Petitgas C, Mesquita A, Dulac A, Robin M, Mollereau B, Jenny A, Chérif-Zahar B, Birman S. The lysosomal membrane protein LAMP2A promotes autophagic flux and prevents SNCA-induced Parkinson disease-like symptoms in the Drosophila brain. Autophagy 2018; 14:1898-1910. [PMID: 29989488 PMCID: PMC6152503 DOI: 10.1080/15548627.2018.1491489] [Citation(s) in RCA: 85] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2016] [Revised: 06/05/2018] [Accepted: 06/13/2018] [Indexed: 02/03/2023] Open
Abstract
The autophagy-lysosome pathway plays a fundamental role in the clearance of aggregated proteins and protection against cellular stress and neurodegenerative conditions. Alterations in autophagy processes, including macroautophagy and chaperone-mediated autophagy (CMA), have been described in Parkinson disease (PD). CMA is a selective autophagic process that depends on LAMP2A (lysosomal-associated membrane protein 2A), a mammal and bird-specific membrane glycoprotein that translocates cytosolic proteins containing a KFERQ-like peptide motif across the lysosomal membrane. Drosophila reportedly lack CMA and use endosomal microautophagy (eMI) as an alternative selective autophagic process. Here we report that neuronal expression of human LAMP2A protected Drosophila against starvation and oxidative stress, and delayed locomotor decline in aging flies without extending their lifespan. LAMP2A also prevented the progressive locomotor and oxidative defects induced by neuronal expression of PD-associated human SNCA (synuclein alpha) with alanine-to-proline mutation at position 30 (SNCAA30P). Using KFERQ-tagged fluorescent biosensors, we observed that LAMP2A expression stimulated selective autophagy in the adult brain and not in the larval fat body, but did not increase this process under starvation conditions. Noteworthy, we found that neurally expressed LAMP2A markedly upregulated levels of Drosophila Atg5, a key macroautophagy initiation protein, and that it increased the density of Atg8a/LC3-positive puncta, which reflects the formation of autophagosomes. Furthermore, LAMP2A efficiently prevented accumulation of the autophagy defect marker Ref(2)P/p62 in the adult brain under acute oxidative stress. These results indicate that LAMP2A can potentiate autophagic flux in the Drosophila brain, leading to enhanced stress resistance and neuroprotection. ABBREVIATIONS Act5C: actin 5C; a.E.: after eclosion; Atg5: autophagy-related 5; Atg8a/LC3: autophagy-related 8a; CMA: chaperone-mediated autophagy; DHE: dihydroethidium; elav: embryonic lethal abnormal vision; eMI: endosomal microautophagy; ESCRT: endosomal sorting complexes required for transport; GABARAP: GABA typeA receptor-associated protein; Hsc70-4: heat shock protein cognate 4; HSPA8/Hsc70: heat shock protein family A (Hsp70) member 8; LAMP2: lysosomal associated membrane protein 2; MDA: malondialdehyde; PA-mCherry: photoactivable mCherry; PBS: phosphate-buffered saline; PCR: polymerase chain reaction; PD: Parkinson disease; Ref(2)P/p62: refractory to sigma P; ROS: reactive oxygen species; RpL32/rp49: ribosomal protein L32; RT-PCR: reverse transcription polymerase chain reaction; SING: startle-induced negative geotaxis; SNCA/α-synuclein: synuclein alpha; SQSTM1/p62: sequestosome 1; TBS: Tris-buffered saline; UAS: upstream activating sequence.
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Affiliation(s)
- Abdul-Raouf Issa
- Genes Circuits Rhythms and Neuropathology, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, Paris, France
| | - Jun Sun
- Genes Circuits Rhythms and Neuropathology, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, Paris, France
| | - Céline Petitgas
- Genes Circuits Rhythms and Neuropathology, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, Paris, France
| | - Ana Mesquita
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Amina Dulac
- Genes Circuits Rhythms and Neuropathology, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, Paris, France
| | - Marion Robin
- ENSL, UCBL, CNRS, LBMC, UMS 3444 Biosciences Lyon Gerland, Université de Lyon, Lyon, France
| | - Bertrand Mollereau
- ENSL, UCBL, CNRS, LBMC, UMS 3444 Biosciences Lyon Gerland, Université de Lyon, Lyon, France
| | - Andreas Jenny
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Baya Chérif-Zahar
- Genes Circuits Rhythms and Neuropathology, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, Paris, France
| | - Serge Birman
- Genes Circuits Rhythms and Neuropathology, Brain Plasticity Unit, CNRS, ESPCI Paris, PSL Research University, Paris, France
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Abstract
Preferential degeneration of dopamine neurons (DAn) in the midbrain represents the principal hallmark of Parkinson's disease (PD). It has been hypothesized that major contributors to DAn vulnerability lie in their unique cellular physiology and architecture, which make them particularly susceptible to stress factors. Here, we report a concise overview of some of the cell mechanisms that may exacerbate DAn sensitivity and loss in PD. In particular, we highlight how defective protein sorting and clearance, endoplasmic reticulum stress, calcium dyshomeostasis and intracellular trafficking converge to contribute synergistically to neuronal dysfunction in PD pathogenesis.
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Affiliation(s)
- Marta Cherubini
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, Le Gros Clark Building, University of Oxford, South Parks Road, Oxford, OX1 3QX, UK
| | - Richard Wade-Martins
- Oxford Parkinson's Disease Centre, Department of Physiology, Anatomy and Genetics, Le Gros Clark Building, University of Oxford, South Parks Road, Oxford, OX1 3QX, UK.
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Tripathi MK, Rajput C, Mishra S, Rasheed MSU, Singh MP. Malfunctioning of Chaperone-Mediated Autophagy in Parkinson's Disease: Feats, Constraints, and Flaws of Modulators. Neurotox Res 2018; 35:260-270. [PMID: 29949106 DOI: 10.1007/s12640-018-9917-z] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Revised: 05/22/2018] [Accepted: 05/25/2018] [Indexed: 12/29/2022]
Abstract
Homeostatic regulation of class II programmed cell death/autophagy for the degradation and elimination of substandard organelles and defective proteins is decisive for the survival of dopaminergic neurons. Chaperone-mediated autophagy (CMA), one of the most highly dedicated self-sacrificing events, is accountable for the partial elimination of redundant soluble cytoplasmic proteins in Parkinson's disease (PD). CMA is characterized by the selective delivery of superfluous protein containing lysine-phenylalanine-glutamate-arginine-glutamine (KFERQ)/KFERQ-like motif to the lysosome through molecular chaperones, such as heat shock cognate-70 (Hsc-70). KFERQ/KFERQ-like motif present in the poor quality cytoplasmic substrate protein and Hsc-70 complex is recognized by a janitor protein, which is referred to as the lysosome-associated membrane protein-2A (LAMP-2A). This protein is known to facilitate an entry of substrate-chaperone complex in the lumen for hydrolytic cleavage of substrate and elimination of end-products. Impaired CMA is repeatedly blamed for an accumulation of surplus soluble proteins. However, it is still an enigma if CMA is a bonus or curse for PD. Case-control studies and cellular and animal models have deciphered the contribution of impaired CMA in PD. Current article updates the role of CMA in toxicant models and recapitulates the evidences that have highlighted a link between impaired CMA and PD. Although PD is an irreversible happening and CMA is a dual edging phenomenon, it is anticipated that fine-tuning of the latter encounters the former to a certain extent. Besides, the truth, embellishment, and propaganda regarding the issue are also emphasized in the final segment of the article.
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Affiliation(s)
- Manish Kumar Tripathi
- Toxicogenomics and Predictive Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Campus, Lucknow, 226 001, Uttar Pradesh, India
| | - Charul Rajput
- Toxicogenomics and Predictive Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Campus, Lucknow, 226 001, Uttar Pradesh, India
| | - Saumya Mishra
- Toxicogenomics and Predictive Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Campus, Lucknow, 226 001, Uttar Pradesh, India
| | - Mohd Sami Ur Rasheed
- Toxicogenomics and Predictive Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India.,Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Campus, Lucknow, 226 001, Uttar Pradesh, India
| | - Mahendra Pratap Singh
- Toxicogenomics and Predictive Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow, 226 001, Uttar Pradesh, India. .,Academy of Scientific and Innovative Research (AcSIR), CSIR-IITR Campus, Lucknow, 226 001, Uttar Pradesh, India.
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Liu L, An D, Xu J, Shao B, Li X, Shi J. Ac2-26 Induces IKKβ Degradation Through Chaperone-Mediated Autophagy Via HSPB1 in NCM-Treated Microglia. Front Mol Neurosci 2018; 11:76. [PMID: 29662435 PMCID: PMC5890123 DOI: 10.3389/fnmol.2018.00076] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2017] [Accepted: 02/26/2018] [Indexed: 11/24/2022] Open
Abstract
Annexin A1 (ANXA1) is an endogenous protein with potent anti-inflammatory properties in the brain. Although ANXA1 has been predominantly studied for its binding to formyl peptide receptors (FPRs) on plasma membranes, little is known regarding whether this protein has an anti-inflammatory effect in the cytosol. Here, we investigated the mechanism by which the ANXA1 peptide Ac2-26 decreases high TNF-α production and IKKβ activity, which was caused by oxygen glucose deprivation/reperfusion (OGD/R)-induced neuronal conditioned medium (NCM) in microglia. We found that exogenous Ac2-26 crosses into the cytoplasm of microglia and inhibits both gene expression and protein secretion of TNF-α. Ac2-26 also causes a decrease in IKKβ protein but not IKKβ mRNA, and this effect is inverted by lysosome inhibitor NH4CL. Furthermore, we demonstrate that Ac2-26 induces IKKβ accumulation in lysosomes and that lysosomal-associated membrane protein 2A (LAMP-2A), not LC-3, is enhanced in microglia exposed to Ac2-26. We hypothesize that Ac2-26 mediates IKKβ degradation in lysosomes through chaperone-mediated autophagy (CMA). Interestingly, ANXA1 in the cytoplasm does not interact with IKKβ but with HSPB1, and Ac2-26 promotes HSPB1 binding to IKKβ. Furthermore, both ANXA1 and HSPB1 can interact with Hsc70 and LAMP-2A, but IKKβ only associates with LAMP-2A. Downregulation of HSPB1 or LAMP-2A reverses the degradation of IKKβ induced by Ac2-26. Taken together, these findings define an essential role of exogenous Ac2-26 in microglia and demonstrate that Ac2-26 is associated with HSPB1 and promotes HSPB1 binding to IKKβ, which is degraded by CMA, thereby reducing TNF-α expression.
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Affiliation(s)
- Lu Liu
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Ministry of Education, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Dandan An
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Ministry of Education, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Junying Xu
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Ministry of Education, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Bin Shao
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Ministry of Education, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Xing Li
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Ministry of Education, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
| | - Jing Shi
- Department of Neurobiology and Key Laboratory of Neurological Diseases of Ministry of Education, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China.,Institute for Brain Research, Collaborative Innovation Center for Brain Science, Huazhong University of Science and Technology, Wuhan, China
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50
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Ntsapi C, Lumkwana D, Swart C, du Toit A, Loos B. New Insights Into Autophagy Dysfunction Related to Amyloid Beta Toxicity and Neuropathology in Alzheimer's Disease. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2018; 336:321-361. [DOI: 10.1016/bs.ircmb.2017.07.002] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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