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Liang W, Liang B, Yan K, Zhang G, Zhuo J, Cai Y. Low-Intensity Pulsed Ultrasound: A Physical Stimulus with Immunomodulatory and Anti-inflammatory Potential. Ann Biomed Eng 2024; 52:1955-1981. [PMID: 38683473 DOI: 10.1007/s10439-024-03523-y] [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: 01/28/2024] [Accepted: 04/20/2024] [Indexed: 05/01/2024]
Abstract
Ultrasound has expanded into the therapeutic field as a medical imaging and diagnostic technique. Low-intensity pulsed ultrasound (LIPUS) is a kind of therapeutic ultrasound that plays a vital role in promoting fracture healing, wound repair, immunomodulation, and reducing inflammation. Its anti-inflammatory effects are manifested by decreased pro-inflammatory cytokines and chemokines, accelerated regression of immune cell invasion, and accelerated damage repair. Although the anti-inflammatory mechanism of LIPUS is not very clear, many in vitro and in vivo studies have shown that LIPUS may play its anti-inflammatory role by activating signaling pathways such as integrin/Focal adhesion kinase (FAK)/Phosphatidylinositol 3-kinase (PI3K)/Serine threonine kinase (Akt), Vascular endothelial growth factor (VEGF)/endothelial nitric oxide synthase (eNOS), or inhibiting signaling pathways such as Toll-like receptors (TLRs)/Nuclear factor kappa-B (NF-κB) and p38-Mitogen-activated protein kinase (MAPK). As a non-invasive physical therapy, the anti-inflammatory and immunomodulatory effects of LIPUS deserve further exploration.
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Affiliation(s)
- Wenxin Liang
- Center of Medicine Clinical Research, Department of Pharmacy, Medical Supplies Center of Chinese PLA General Hospital, 28 Fu Xing Road, Beijing, 100853, People's Republic of China
- College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | - Beibei Liang
- Center of Medicine Clinical Research, Department of Pharmacy, Medical Supplies Center of Chinese PLA General Hospital, 28 Fu Xing Road, Beijing, 100853, People's Republic of China
| | - Kaicheng Yan
- Center of Medicine Clinical Research, Department of Pharmacy, Medical Supplies Center of Chinese PLA General Hospital, 28 Fu Xing Road, Beijing, 100853, People's Republic of China
| | - Guanxuanzi Zhang
- Center of Medicine Clinical Research, Department of Pharmacy, Medical Supplies Center of Chinese PLA General Hospital, 28 Fu Xing Road, Beijing, 100853, People's Republic of China
| | - Jiaju Zhuo
- Center of Medicine Clinical Research, Department of Pharmacy, Medical Supplies Center of Chinese PLA General Hospital, 28 Fu Xing Road, Beijing, 100853, People's Republic of China
- College of Pharmacy, Chongqing Medical University, Chongqing, 400016, China
| | - Yun Cai
- Center of Medicine Clinical Research, Department of Pharmacy, Medical Supplies Center of Chinese PLA General Hospital, 28 Fu Xing Road, Beijing, 100853, People's Republic of China.
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2
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Zhang Y, Li C, Zhang M, Gao F, Zhao Y, Kong X. Selective autophagy receptor p62 promotes antibacterial and antiviral immunity in common carp (Cyprinus carpio). FISH & SHELLFISH IMMUNOLOGY 2024; 151:109719. [PMID: 38914181 DOI: 10.1016/j.fsi.2024.109719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 06/18/2024] [Accepted: 06/21/2024] [Indexed: 06/26/2024]
Abstract
Sequestosome 1 (SQSTM1/p62) is a selective autophagy adapter protein that participates in antiviral and bacterial immune responses and plays an important regulatory role in clearing the proteins to be degraded and maintaining intracellular protein homeostasis. In this study, two p62 genes were cloned from common carp (Cyprinus carpio), namely Ccp62-1 and Ccp62-2, and conducted bioinformatics analysis on them. The results showed that Ccp62s had the same structural domain (Phox and Bem1 domain, ZZ-type zinc finger domain, and ubiquitin-associated domain) as p62 from other species. Ccp62s were widely expressed in various tissues of fish, and highly expressed in immune organs such as gills, spleen, head kidney, etc. Subcellular localization study showed that they were mainly distributed in punctate aggregates in the cytoplasm. After stimulation with Aeromonas hydrophila and spring viraemia of carp virus (SVCV), the expression level of Ccp62s was generally up-regulated. Overexpression of Ccp62s in EPC cells could inhibit SVCV replication. Upon A. hydrophila challenge, the bacterial load in Ccp62s-overexpressing group was significantly reduced, the expression levels of pro-inflammatory cytokines and interferon factors were increased, and the survival rate of the fish was improved. These results indicated that Ccp62s were involved in the immune response of common carp to bacterial and viral infections.
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Affiliation(s)
- Yunli Zhang
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Henan Province, PR China
| | - Chen Li
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Henan Province, PR China.
| | - Mengxi Zhang
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Henan Province, PR China
| | - Feng Gao
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Henan Province, PR China
| | - Yanjing Zhao
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Henan Province, PR China
| | - Xianghui Kong
- Engineering Lab of Henan Province for Aquatic Animal Disease Control, College of Fisheries, Henan Normal University, Henan Province, PR China.
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3
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Zhao Q, Lai K. Role of immune inflammation regulated by macrophage in the pathogenesis of age-related macular degeneration. Exp Eye Res 2024; 239:109770. [PMID: 38145794 DOI: 10.1016/j.exer.2023.109770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Revised: 12/05/2023] [Accepted: 12/20/2023] [Indexed: 12/27/2023]
Abstract
Age-related macular degeneration (AMD) can lead to irreversible impairment of visual function, and the number of patients with AMD has been increasing globally. The immunoinflammatory theory is an important pathogenic mechanism of AMD, with macrophages serving as the primary inflammatory infiltrating cells in AMD lesions. Its powerful immunoinflammatory regulatory function has attracted considerable attention. Herein, we provide an overview of the involvement of macrophage-regulated immunoinflammation in different stages of AMD. Additionally, we summarize novel therapeutic approaches for AMD, focusing on targeting macrophages, such as macrophage/microglia modulators, reduction of macrophage aggregation in the subretinal space, modulation of macrophage effector function, macrophage phenotypic alterations, and novel biomimetic nanocomposites development based on macrophage-associated functional properties. We aimed to provide a basis and reference for the further exploration of AMD pathogenesis, developmental influences, and new therapeutic approaches.
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Affiliation(s)
- Qin Zhao
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, No.7 Jinsui Road, Guangzhou, 510060, China
| | - Kunbei Lai
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat-sen University, Guangdong Provincial Key Laboratory of Ophthalmology and Visual Science, Guangdong Provincial Clinical Research Center for Ocular Diseases, No.7 Jinsui Road, Guangzhou, 510060, China.
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4
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Vuletić A, Mirjačić Martinović K, Spasić J. Role of Histone Deacetylase 6 and Histone Deacetylase 6 Inhibition in Colorectal Cancer. Pharmaceutics 2023; 16:54. [PMID: 38258065 PMCID: PMC10818982 DOI: 10.3390/pharmaceutics16010054] [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: 11/28/2023] [Revised: 12/22/2023] [Accepted: 12/27/2023] [Indexed: 01/24/2024] Open
Abstract
Histone deacetylase 6 (HDAC6), by deacetylation of multiple substrates and association with interacting proteins, regulates many physiological processes that are involved in cancer development and invasiveness such as cell proliferation, apoptosis, motility, epithelial to mesenchymal transition, and angiogenesis. Due to its ability to remove misfolded proteins, induce autophagy, and regulate unfolded protein response, HDAC6 plays a protective role in responses to stress and enables tumor cell survival. The scope of this review is to discuss the roles of HDCA6 and its implications for the therapy of colorectal cancer (CRC). As HDAC6 is overexpressed in CRC, correlates with poor disease prognosis, and is not essential for normal mammalian development, it represents a good therapeutic target. Selective inhibition of HDAC6 impairs growth and progression without inducing major adverse events in experimental animals. In CRC, HDAC6 inhibitors have shown the potential to reduce tumor progression and enhance the therapeutic effect of other drugs. As HDAC6 is involved in the regulation of immune responses, HDAC6 inhibitors have shown the potential to improve antitumor immunity by increasing the immunogenicity of tumor cells, augmenting immune cell activity, and alleviating immunosuppression in the tumor microenvironment. Therefore, HDAC6 inhibitors may represent promising candidates to improve the effect of and overcome resistance to immunotherapy.
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Affiliation(s)
- Ana Vuletić
- Department of Experimental Oncology, Institute of Oncology and Radiology of Serbia, Pasterova 14, 11000 Belgrade, Serbia;
| | - Katarina Mirjačić Martinović
- Department of Experimental Oncology, Institute of Oncology and Radiology of Serbia, Pasterova 14, 11000 Belgrade, Serbia;
| | - Jelena Spasić
- Clinic for Medical Oncology, Institute of Oncology and Radiology of Serbia, Pasterova 14, 11000 Belgrade, Serbia;
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Trapannone R, Romanov J, Martens S. p62 and NBR1 functions are dispensable for aggrephagy in mouse ESCs and ESC-derived neurons. Life Sci Alliance 2023; 6:e202301936. [PMID: 37620146 PMCID: PMC10460970 DOI: 10.26508/lsa.202301936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 08/10/2023] [Accepted: 08/11/2023] [Indexed: 08/26/2023] Open
Abstract
Accumulation of protein aggregates is a hallmark of various neurodegenerative diseases. Selective autophagy mediates the delivery of specific cytoplasmic cargo material into lysosomes for degradation. In aggrephagy, which is the selective autophagy of protein aggregates, the cargo receptors p62 and NBR1 were shown to play important roles in cargo selection. They bind ubiquitinated cargo material via their ubiquitin-associated domains and tether it to autophagic membranes via their LC3-interacting regions. We used mouse embryonic stem cells (ESCs) in combination with genome editing to obtain further insights into the roles of p62 and NBR1 in aggrephagy. Unexpectedly, our data reveal that both ESCs and ESC-derived neurons do not show strong defects in the clearance of protein aggregates upon knockout of p62 or NBR1 and upon mutation of the p62 ubiquitin-associated domain and the LC3-interacting region motif. Taken together, our results show a robust aggregate clearance in ESCs and ESC-derived neurons. Thus, redundancy between the cargo receptors, other factors, and pathways, such as the ubiquitin-proteasome system, may compensate for the loss of function of p62 and NBR1.
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Affiliation(s)
- Riccardo Trapannone
- Max Perutz Labs, Vienna Biocenter Campus, Vienna, Austria
- Department of Biochemistry and Cell Biology, Center for Molecular Biology, University of Vienna, Vienna, Austria
| | - Julia Romanov
- Max Perutz Labs, Vienna Biocenter Campus, Vienna, Austria
- Department of Biochemistry and Cell Biology, Center for Molecular Biology, University of Vienna, Vienna, Austria
| | - Sascha Martens
- Max Perutz Labs, Vienna Biocenter Campus, Vienna, Austria
- Department of Biochemistry and Cell Biology, Center for Molecular Biology, University of Vienna, Vienna, Austria
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Rayego-Mateos S, Morgado-Pascual JL, García-Caballero C, Lazaro I, Sala-Vila A, Opazo-Rios L, Mas-Fontao S, Egido J, Ruiz-Ortega M, Moreno JA. Intravascular hemolysis triggers NAFLD characterized by a deregulation of lipid metabolism and lipophagy blockade. J Pathol 2023; 261:169-183. [PMID: 37555366 DOI: 10.1002/path.6161] [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: 11/05/2022] [Revised: 05/30/2023] [Accepted: 06/14/2023] [Indexed: 08/10/2023]
Abstract
Intravascular hemolysis is a common feature of different clinical entities, including sickle cell disease and malaria. Chronic hemolytic disorders are associated with hepatic damage; however, it is unknown whether heme disturbs lipid metabolism and promotes liver steatosis, thereby favoring the progression to nonalcoholic fatty liver disease (NAFLD). Using an experimental model of acute intravascular hemolysis, we report here the presence of liver injury in association with microvesicular lipid droplet deposition. Hemolysis promoted serum hyperlipidemia and altered intrahepatic triglyceride fatty acid composition, with increments in oleic, palmitoleic, and palmitic acids. These findings were related to augmented expression of transporters involved in fatty acid uptake (CD36 and MSR1) and deregulation of LDL transport, as demonstrated by decreased levels of LDL receptor and increased PCSK9 expression. Hemolysis also upregulated hepatic enzymes associated with cholesterol biosynthesis (SREBP2, HMGC1, LCAT, SOAT1) and transcription factors regulating lipid metabolism (SREBP1). Increased LC3II/LC3I ratio and p62/SQSTM1 protein levels were reported in mice with intravascular hemolysis and hepatocytes stimulated with heme, indicating a blockade of lipophagy. In cultured hepatocytes, cell pretreatment with the autophagy inductor rapamycin diminished heme-mediated toxicity and accumulation of lipid droplets. In conclusion, intravascular hemolysis enhances liver damage by exacerbating lipid accumulation and blocking the lipophagy pathway, thereby promoting NAFLD. These new findings have a high translational potential as a novel NAFLD-promoting mechanism in individuals suffering from severe hemolysis episodes. © 2023 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of The Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Sandra Rayego-Mateos
- Molecular and Cellular Biology in Renal and Vascular Pathology. IIS-Fundación Jiménez Díaz, Universidad Autónoma Madrid, Madrid, Spain
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, Cordoba, Spain
| | - José Luis Morgado-Pascual
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Cell Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain
| | - Cristina García-Caballero
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, Cordoba, Spain
| | - Iolanda Lazaro
- Cardiovascular Risk and Nutrition, Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Aleix Sala-Vila
- Cardiovascular Risk and Nutrition, Hospital del Mar Medical Research Institute (IMIM), Barcelona, Spain
| | - Lucas Opazo-Rios
- Health Science Faculty, Universidad de Las Américas, Concepción-Talcahuano, Chile
| | - Sebastian Mas-Fontao
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Biomedical Research Networking Center on Cardiovascular Diseases (CIBERCV), Madrid, Spain
- Instituto de Investigación Sanitaria (IIS)-Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | - Jesús Egido
- Spanish Biomedical Research Centre in Diabetes and Associated Metabolic Disorders (CIBERDEM), Madrid, Spain
- Instituto de Investigación Sanitaria (IIS)-Fundación Jiménez Díaz, Universidad Autónoma, Madrid, Spain
| | - Marta Ruiz-Ortega
- Molecular and Cellular Biology in Renal and Vascular Pathology. IIS-Fundación Jiménez Díaz, Universidad Autónoma Madrid, Madrid, Spain
| | - Juan Antonio Moreno
- Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Hospital Universitario Reina Sofía, Cordoba, Spain
- Department of Cell Biology, Physiology and Immunology, University of Cordoba, Cordoba, Spain
- Biomedical Research Networking Center on Cardiovascular Diseases (CIBERCV), Madrid, Spain
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7
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Abstract
Cells keep their proteome functional by the action of the proteostasis network, composed of the chaperones, the ubiquitin-proteasome system and autophagy. The decline of this network results in the accumulation of protein aggregates and is associated with aging and disease. In this Cell Science at a Glance and accompanying poster, we provide an overview of the molecular mechanisms of the removal of protein aggregates by a selective autophagy pathway, termed aggrephagy. We outline how aggrephagy is regulated by post-translational modifications and via auxiliary proteins. We further describe alternative aggrephagy pathways in physiology and their disruption in pathology. In particular, we discuss aggrephagy pathways in neurons and accumulation of protein aggregates in a wide range of diseases. Finally, we highlight strategies to reprogram aggrephagy to treat protein aggregation diseases.
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Affiliation(s)
- Bernd Bauer
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Dr Bohr-Gasse 9/5, 1030 Vienna, Austria
- Vienna BioCenter PhD Program, Doctoral School of the University of Vienna and Medical University of Vienna, Campus-Vienna-Biocenter 1, 1030 Vienna, Austria
| | - Sascha Martens
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Dr Bohr-Gasse 9/5, 1030 Vienna, Austria
| | - Luca Ferrari
- Max Perutz Labs, University of Vienna, Vienna BioCenter, Dr Bohr-Gasse 9/5, 1030 Vienna, Austria
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8
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Zhu Y, Feng M, Wang B, Zheng Y, Jiang D, Zhao L, Mamun MAA, Kang H, Nie H, Zhang X, Guo N, Qin S, Wang N, Liu H, Gao Y. New insights into the non-enzymatic function of HDAC6. Biomed Pharmacother 2023; 161:114438. [PMID: 37002569 DOI: 10.1016/j.biopha.2023.114438] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Revised: 02/20/2023] [Accepted: 02/21/2023] [Indexed: 03/11/2023] Open
Abstract
Histone deacetylase 6 (HDAC6) is a class IIb histone deacetylase that contains two catalytic domains and a zinc-finger ubiquitin binding domain (ZnF-UBP) domain. The deacetylation function of HDAC6 has been extensively studied with common substrates such as α-tubulin, cortactin, and Hsp90. Apart from its deacetylase activity, HDAC6 ZnF-UBP binds to unanchored ubiquitin of specific sequences and serves as a carrier for transporting aggregated proteins. As a result, aggresomes are formed and protein degradation is facilitated by the autophagy-lysosome pathway. This HDAC6-dependent microtubule transport can be used by cells to assemble and activate inflammasomes, which play a critical role in immune regulation. Even viruses can benefit from the carrier of HDAC6 to assist in uncoating their surfaces during their infection cycle. However, HDAC6 is also capable of blocking virus invasion and replication in a non-enzymatic manner. Given these non-enzymatic functions, HDAC6 is closely associated with various diseases, including neurodegeneration, inflammasome-associated diseases, cancer, and viral infections. Small molecule inhibitors targeting the ubiquitin binding pocket of HDAC6 have been investigated. In this review, we focus on mechanisms in non-enzymatic functions of HDAC6 and discuss the rationality and prospects of therapeutic strategies by intervening the activation of HDAC6 ZnF-UBP in concrete diseases.
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Affiliation(s)
- Yuanzai Zhu
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Mengkai Feng
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Bo Wang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Department of Gastroenterology and Hepatology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou 450001, China
| | - Yichao Zheng
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Dandan Jiang
- Department of Pharmacy, People's Hospital of Henan Province, Zhengzhou University, Henan 450001, China
| | - Lijuan Zhao
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - M A A Mamun
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Huiqin Kang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Haiqian Nie
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Xiya Zhang
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Ningjie Guo
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Shangshang Qin
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China
| | - Ning Wang
- The School of Chinese Medicine, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Hongmin Liu
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China.
| | - Ya Gao
- State Key Laboratory of Esophageal Cancer Prevention & Treatment, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Key Laboratory of Henan Province for Drug Quality and Evaluation, Henan Province, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; Institute of Drug Discovery and Development, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China; School of Pharmaceutical Sciences, Zhengzhou University, 100 Kexue Avenue, Zhengzhou, Henan 450001, China.
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9
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Wu Y, Taisne C, Mahtal N, Forrester A, Lussignol M, Cintrat JC, Esclatine A, Gillet D, Barbier J. Autophagic Degradation Is Involved in Cell Protection against Ricin Toxin. Toxins (Basel) 2023; 15:toxins15050304. [PMID: 37235339 DOI: 10.3390/toxins15050304] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 04/19/2023] [Accepted: 04/20/2023] [Indexed: 05/28/2023] Open
Abstract
Autophagy is a complex and highly regulated degradative process, which acts as a survival pathway in response to cellular stress, starvation and pathogen infection. Ricin toxin is a plant toxin produced by the castor bean and classified as a category B biothreat agent. Ricin toxin inhibits cellular protein synthesis by catalytically inactivating ribosomes, leading to cell death. Currently, there is no licensed treatment for patients exposed to ricin. Ricin-induced apoptosis has been extensively studied; however, whether its intoxication via protein synthesis inhibition affects autophagy is not yet resolved. In this work, we demonstrated that ricin intoxication is accompanied by its own autophagic degradation in mammalian cells. Autophagy deficiency, by knocking down ATG5, attenuates ricin degradation, thus aggravating ricin-induced cytotoxicity. Additionally, the autophagy inducer SMER28 (Small Molecule Enhancer 28) partially protects cells against ricin cytotoxicity, an effect not observed in autophagy-deficient cells. These results demonstrate that autophagic degradation acts as a survival response of cells against ricin intoxication. This suggests that stimulation of autophagic degradation may be a strategy to counteract ricin intoxication.
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Affiliation(s)
- Yu Wu
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, Gif-sur-Yvette 91191, France
- Institute of Immunology, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China (USTC), Hefei 230001, China
| | - Clémence Taisne
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette 91198, France
| | - Nassim Mahtal
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, Gif-sur-Yvette 91191, France
| | - Alison Forrester
- Research Unit of Biochemistry and Cell Biology (URBC), Namur Research Institute for Life Sciences (NARILIS), University of Namur, 5000 Namur, Belgium
| | - Marion Lussignol
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette 91198, France
| | - Jean-Christophe Cintrat
- Université Paris-Saclay, CEA, INRAE, Médicaments et Technologies pour la Santé (DMTS), SCBM, Gif-sur-Yvette 91191, France
| | - Audrey Esclatine
- Université Paris-Saclay, CEA, CNRS, Institute for Integrative Biology of the Cell (I2BC), Gif-sur-Yvette 91198, France
| | - Daniel Gillet
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, Gif-sur-Yvette 91191, France
| | - Julien Barbier
- Université Paris-Saclay, CEA, INRAE, Département Médicaments et Technologies pour la Santé (DMTS), SIMoS, Gif-sur-Yvette 91191, France
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10
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Bifendate inhibits autophagy at multiple steps and attenuates oleic acid-induced lipid accumulation. Biochem Biophys Res Commun 2022; 631:115-123. [DOI: 10.1016/j.bbrc.2022.09.067] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 09/16/2022] [Indexed: 01/18/2023]
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11
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Wang Z, Huang J, Yang SP, Weaver DF. Anti-Inflammatory Anthranilate Analogue Enhances Autophagy through mTOR and Promotes ER-Turnover through TEX264 during Alzheimer-Associated Neuroinflammation. ACS Chem Neurosci 2022; 13:406-422. [PMID: 35061945 DOI: 10.1021/acschemneuro.1c00818] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Autophagy degrades impaired organelles and toxic proteins to maintain cellular homeostasis. Dysregulated autophagy is a pathogenic participant in Alzheimer's disease (AD) progression. In early-stage AD, autophagy is beneficially initiated by mild endoplasmic reticulum (ER) stress to alleviate cellular damage and inflammation. However, chronic overproduction of toxic Aβ oligomers eventually causes Ca2+ dysregulation in the ER, subsequently elevating ER-stress and impairing autophagy. Our previous work showed that a novel anthranilate analogue (SI-W052) inhibited lipopolysaccharide (LPS)-induced tumor necrosis factor (TNF)-α and interleukin (IL)-6 on microglia. To investigate its mechanism of action, herein, we postulate that SI-W052 exhibits anti-inflammatory activity through ER-stress-mediated autophagy. We initially demonstrate that autophagy inhibits inflammation, but it becomes impaired during acute inflammation. SI-W052 significantly induces the conversion ratio of LC3 II/I and inhibits LPS-upregulated p-mTOR, thereby restoring impaired autophagy to modulate inflammation. Our signaling study further indicates that SI-W052 inhibits the upregulation of ER-stress marker genes, including Atf4 and sXbp1/tXbp1, explaining compound activity against IL-6. This evidence encouraged us to evaluate ER-stress-triggered ER-phagy using TEX264. ER-phagy mediates ER-turnover by the degradation of ER fragments to maintain homeostasis. TEX264 is an important ER-phagy receptor involved in ATF4-mediated ER-phagy under ER-stress. In our study, elevated TEX264 degradation is identified during inflammation; SI-W052 enhances TEX264 expression, producing a positive effect in ER-turnover. Our knockdown experiment further verifies the important role of TEX264 in SI-W052 activity against IL-6 and ER-stress. In conclusion, this study demonstrates that an anthranilate analogue is a novel neuroinflammation agent functioning through ER-stress-mediated autophagy and ER-phagy mechanisms.
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Affiliation(s)
- Zhiyu Wang
- Krembil Research Institute, Toronto M5T 0S8, Canada
- Faculty of Pharmacy, University of Toronto, Toronto M5S 3M2, Canada
| | - Junbo Huang
- Krembil Research Institute, Toronto M5T 0S8, Canada
| | | | - Donald F. Weaver
- Krembil Research Institute, Toronto M5T 0S8, Canada
- Faculty of Pharmacy, University of Toronto, Toronto M5S 3M2, Canada
- Faculty of Medicine, University of Toronto, Toronto M5S 1A8, Canada
- Department of Chemistry, University of Toronto, Toront M5S 3H6, Canada
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12
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Upadhyay A. Natural compounds in the regulation of proteostatic pathways: An invincible artillery against stress, ageing, and diseases. Acta Pharm Sin B 2021; 11:2995-3014. [PMID: 34729300 PMCID: PMC8546668 DOI: 10.1016/j.apsb.2021.01.006] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2020] [Revised: 10/12/2020] [Accepted: 11/03/2020] [Indexed: 01/13/2023] Open
Abstract
Cells have different sets of molecules for performing an array of physiological functions. Nucleic acids have stored and carried the information throughout evolution, whereas proteins have been attributed to performing most of the cellular functions. To perform these functions, proteins need to have a unique conformation and a definite lifespan. These attributes are achieved by a highly coordinated protein quality control (PQC) system comprising chaperones to fold the proteins in a proper three-dimensional structure, ubiquitin-proteasome system for selective degradation of proteins, and autophagy for bulk clearance of cell debris. Many kinds of stresses and perturbations may lead to the weakening of these protective cellular machinery, leading to the unfolding and aggregation of cellular proteins and the occurrence of numerous pathological conditions. However, modulating the expression and functional efficiency of molecular chaperones, E3 ubiquitin ligases, and autophagic proteins may diminish cellular proteotoxic load and mitigate various pathological effects. Natural medicine and small molecule-based therapies have been well-documented for their effectiveness in modulating these pathways and reestablishing the lost proteostasis inside the cells to combat disease conditions. The present article summarizes various similar reports and highlights the importance of the molecules obtained from natural sources in disease therapeutics.
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Key Words
- 17-AAG, 17-allylamino-geldanamycin
- APC, anaphase-promoting complex
- Ageing
- Autophagy
- BAG, BCL2-associated athanogene
- CAP, chaperone-assisted proteasomal degradation
- CASA, chaperone-assisted selective autophagy
- CHIP, carboxy-terminus of HSC70 interacting protein
- CMA, chaperone-mediated autophagy
- Cancer
- Chaperones
- DUBs, deubiquitinases
- Drug discovery
- EGCG, epigallocatechin-3-gallate
- ESCRT, endosomal sorting complexes required for transport
- HECT, homologous to the E6-AP carboxyl terminus
- HSC70, heat shock cognate 70
- HSF1, heat shock factor 1
- HSP, heat shock protein
- KFERQ, lysine-phenylalanine-glutamate-arginine-glutamine
- LAMP2a, lysosome-associated membrane protein 2a
- LC3, light chain 3
- NBR1, next to BRCA1 gene 1
- Natural molecules
- Neurodegeneration
- PQC, protein quality control
- Proteinopathies
- Proteostasis
- RING, really interesting new gene
- UPS, ubiquitin–proteasome system
- Ub, ubiquitin
- Ubiquitin proteasome system
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Affiliation(s)
- Arun Upadhyay
- Department of Biochemistry, Central University of Rajasthan, Bandar Sindari, Kishangarh, Ajmer, Rajasthan 305817, India
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13
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Liu Y, Yao Y, Tao W, Liu F, Yang S, Zhao A, Song D, Li X. Coenzyme Q10 ameliorates BPA-induced apoptosis by regulating autophagy-related lysosomal pathways. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2021; 221:112450. [PMID: 34186417 DOI: 10.1016/j.ecoenv.2021.112450] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Revised: 06/16/2021] [Accepted: 06/21/2021] [Indexed: 06/13/2023]
Abstract
Bisphenol A (BPA) is a widely distributed environmental endocrine disruptor. The accumulation of BPA has been proved that produce various toxic effects both on human and animals. However, the strategies to reduce the damage of BPA on the body and related mechanisms remain to be studied. Coenzyme Q10 (CoQ10), as a powerful antioxidant, is ubiquitous in many eukaryotic cells, which can improve the integrity of lysosomal membrane, lysosomal degradation function and promote autophagy. Here, we examined the ability of CoQ10 to alleviate oxidative stress and apoptosis in BPA-induced damages in C2C12 cells, and how to alleviate it. Our results showed that BPA treatment significantly reduced cell viability, increased the number of cell apoptosis and ROS production, decreased mitochondrial membrane potential, and inhibited the gene expression of mitochondria biogenesis. Moreover, we demonstrated that exposure to BPA increased expression levels of autophagy protein (LC3-II, p62), inhibited autophagy flux, and disrupted the acidic pH environment of lysosomes. Importantly, CoQ10 supplementation effectively restored these abnormalities caused by BPA. CoQ10 significantly decreased the apoptotic incidence and ROS levels, improved mitochondrial membrane potential. Moreover, CoQ10 improved lysosome function and enhanced autophagy flux. Taken together, our results indicate that CoQ10 supplementation is a feasible and effective way to promote the level of autophagy by improving lysosomal function, thereby reducing the apoptosis caused by BPA accumulation. This study aims to provide evidence for the role of CoQ10 in repairing BPA-induced cell damage in clinical practice.
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Affiliation(s)
- Yuan Liu
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, Zhejiang A&F University, Hangzhou 311300, China
| | - Yaxin Yao
- Yikon Genomics Company, Ltd., Suzhou 215000, China
| | - Wenjing Tao
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, Zhejiang A&F University, Hangzhou 311300, China
| | - Feng Liu
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, Zhejiang A&F University, Hangzhou 311300, China
| | - Songbai Yang
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, Zhejiang A&F University, Hangzhou 311300, China
| | - Ayong Zhao
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, Zhejiang A&F University, Hangzhou 311300, China
| | - Dan Song
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, Zhejiang A&F University, Hangzhou 311300, China.
| | - Xiangchen Li
- Key Laboratory of Applied Technology on Green-Eco-Healthy Animal Husbandry of Zhejiang Province, Zhejiang Provincial Engineering Laboratory for Animal Health and Internet Technology, College of Animal Science and Technology, Zhejiang A&F University, Hangzhou 311300, China.
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14
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Dynamin-related protein 1 deficiency accelerates lipopolysaccharide-induced acute liver injury and inflammation in mice. Commun Biol 2021; 4:894. [PMID: 34290349 PMCID: PMC8295278 DOI: 10.1038/s42003-021-02413-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 06/30/2021] [Indexed: 12/21/2022] Open
Abstract
Mitochondrial fusion and fission, which are strongly related to normal mitochondrial function, are referred to as mitochondrial dynamics. Mitochondrial fusion defects in the liver cause a non-alcoholic steatohepatitis-like phenotype and liver cancer. However, whether mitochondrial fission defect directly impair liver function and stimulate liver disease progression, too, is unclear. Dynamin-related protein 1 (DRP1) is a key factor controlling mitochondrial fission. We hypothesized that DRP1 defects are a causal factor directly involved in liver disease development and stimulate liver disease progression. Drp1 defects directly promoted endoplasmic reticulum (ER) stress, hepatocyte death, and subsequently induced infiltration of inflammatory macrophages. Drp1 deletion increased the expression of numerous genes involved in the immune response and DNA damage in Drp1LiKO mouse primary hepatocytes. We administered lipopolysaccharide (LPS) to liver-specific Drp1-knockout (Drp1LiKO) mice and observed an increased inflammatory cytokine expression in the liver and serum caused by exaggerated ER stress and enhanced inflammasome activation. This study indicates that Drp1 defect-induced mitochondrial dynamics dysfunction directly regulates the fate and function of hepatocytes and enhances LPS-induced acute liver injury in vivo.
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15
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Priego AR, Parra EG, Mas S, Morgado-Pascual JL, Ruiz-Ortega M, Rayego-Mateos S. Bisphenol A Modulates Autophagy and Exacerbates Chronic Kidney Damage in Mice. Int J Mol Sci 2021; 22:7189. [PMID: 34281243 PMCID: PMC8268806 DOI: 10.3390/ijms22137189] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 02/07/2023] Open
Abstract
BACKGROUND Bisphenol A (BPA) is a ubiquitous environmental toxin that accumulates in chronic kidney disease (CKD). Our aim was to explore the effect of chronic exposition of BPA in healthy and injured kidney investigating potential mechanisms involved. METHODS In C57Bl/6 mice, administration of BPA (120 mg/kg/day, i.p for 5 days/week) was done for 2 and 5 weeks. To study BPA effect on CKD, a model of subtotal nephrectomy (SNX) combined with BPA administration for 5 weeks was employed. In vitro studies were done in human proximal tubular epithelial cells (HK-2 line). RESULTS Chronic BPA administration to healthy mice induces inflammatory infiltration in the kidney, tubular injury and renal fibrosis (assessed by increased collagen deposition). Moreover, in SNX mice BPA exposure exacerbates renal lesions, including overexpression of the tubular damage biomarker Hepatitis A virus cellular receptor 1 (Havcr-1/KIM-1). BPA upregulated several proinflammatory genes and increased the antioxidant response [Nuclear factor erythroid 2-related factor 2 (Nrf2), Heme Oxygenase-1 (Ho-1) and NAD(P)H dehydrogenase quinone 1 (Nqo-1)] both in healthy and SNX mice. The autophagy process was modulated by BPA, through elevated autophagy-related gene 5 (Atg5), autophagy-related gene 7 (Atg7), Microtubule-associated proteins 1A/1B light chain 3B (Map1lc3b/Lc3b) and Beclin-1 gene levels and blockaded the autophagosome maturation and flux (p62 levels). This autophagy deregulation was confirmed in vitro. CONCLUSIONS BPA deregulates autophagy flux and redox protective mechanisms, suggesting a potential mechanism of BPA deleterious effects in the kidney.
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Affiliation(s)
- Alberto Ruiz Priego
- Division of Nephrology and Hypertension, IIS-Fundación Jiménez Díaz-UAM/IRSIN, 28040 Madrid, Spain; (A.R.P.); (S.M.)
| | - Emilio González Parra
- Division of Nephrology and Hypertension, IIS-Fundación Jiménez Díaz-UAM/IRSIN, 28040 Madrid, Spain; (A.R.P.); (S.M.)
| | - Sebastián Mas
- Division of Nephrology and Hypertension, IIS-Fundación Jiménez Díaz-UAM/IRSIN, 28040 Madrid, Spain; (A.R.P.); (S.M.)
| | - José Luis Morgado-Pascual
- Cellular Biology, Physiology and Immunology Department, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), University of Cordoba, 14004 Cordoba, Spain;
| | - Marta Ruiz-Ortega
- Molecular and Cellular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz, Universidad Autónoma Madrid Faculty of Medicine, 28040 Madrid, Spain;
| | - Sandra Rayego-Mateos
- Molecular and Cellular Biology in Renal and Vascular Pathology, IIS-Fundación Jiménez Díaz, Universidad Autónoma Madrid Faculty of Medicine, 28040 Madrid, Spain;
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16
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Wen W, Li X, Yin M, Wang H, Qin L, Li H, Liu W, Zhao Z, Zhao Q, Chen H, Hu J, Qian P. Selective autophagy receptor SQSTM1/ p62 inhibits Seneca Valley virus replication by targeting viral VP1 and VP3. Autophagy 2021; 17:3763-3775. [PMID: 33719859 DOI: 10.1080/15548627.2021.1897223] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Macroautophagy/autophagy plays a critical role in antiviral immunity through targeting viruses and initiating host immune responses. The receptor protein, SQSTM1/p62 (sequestosome 1), plays a vital role in selective autophagy. It serves as a receptor targeting ubiquitinated proteins or pathogens to phagophores for degradation. In this study, we explored the reciprocal regulation between selective autophagy receptor SQSTM1 and Seneca Valley virus (SVV). SVV infection induced autophagy. Autophagy promoted SVV infection in pig cells but played opposite functions in human cells. Overexpression of SQSTM1 decreased viral protein production and reduced viral titers. Further study showed that SQSTM1 interacted with SVV VP1 and VP3 independent of its UBA domain. SQSTM1 targeted SVV VP1 and VP3 to phagophores for degradation to inhibit viral replication. To counteract this, SVV evolved strategies to circumvent the host autophagic machinery to promote viral replication. SVV 3Cpro targeted the receptor SQSTM1 for cleavage at glutamic acid 355, glutamine 392, and glutamine 395 and abolished its capacity to mediate selective autophagy. At the same time, the 3Cpro-mediated SQSTM1 cleavage products lost the ability to inhibit viral propagation. Collectively, our results provide evidence for selective autophagy in host against viruses and reveal potential viral strategies to evade autophagic machinery for successful pathogenesis. Abbreviations: Baf.A1: bafilomycin A1; Co-IP: co-immunoprecipitation; hpi: h post-infection; LIR: LC3-interacting region; MAP1LC3B/LC3B: microtubule-associated protein 1 light chain 3 beta; MOI: multiplicity of infection; PB1: N-terminal Phox/Bem1p; Rap.: rapamycin; Seneca Valley virus: SVV; SQSTM1/p62: sequestosome 1; SQSTM1-N355: residues 1 to 355 of SQSTM1; SQSTM1-C355: residues 355 to 478 of SQSTM1; SQSTM1-N392: residues 1 to 392 of SQSTM1; SQSTM1-C392: residues 392 to 478 of SQSTM1; SQSTM1-N388: residues 1 to 388 of SQSTM1; SQSTM1-N397: residues 1 to 397 of SQSTM1; UBA: ubiquitin association; Ubi: ubiquitin.
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Affiliation(s)
- Wei Wen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Xiangmin Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China.,Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People's Republic of China, Wuhan, Hubei, China
| | - Mengge Yin
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Haoyuan Wang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Liuxin Qin
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Hui Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Wenqiang Liu
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Zekai Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Qiongqiong Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China
| | - Huanchun Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China.,Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People's Republic of China, Wuhan, Hubei, China
| | - Junjie Hu
- Hubei Cancer Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Ping Qian
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei, China.,College of Veterinary Medicine, Huazhong Agricultural University, Wuhan, Hubei, China.,The Cooperative Innovation Center for Sustainable Pig Production, Wuhan, Hubei, China.,Key Laboratory of Development of Veterinary Diagnostic Products, Ministry of Agriculture of the People's Republic of China, Wuhan, Hubei, China
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17
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Chen TT, Zhou X, Xu YN, Li Y, Wu XY, Xiang Q, Fu LY, Hu XX, Tao L, Shen XC. Gastrodin ameliorates learning and memory impairment in rats with vascular dementia by promoting autophagy flux via inhibition of the Ca 2+/CaMKII signal pathway. Aging (Albany NY) 2021; 13:9542-9565. [PMID: 33714957 PMCID: PMC8064221 DOI: 10.18632/aging.202667] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2020] [Accepted: 11/30/2020] [Indexed: 12/12/2022]
Abstract
Vascular dementia (VD) is a common disease that occurs during human aging. Gastrodin (GAS) has potential benefits for the prevention and treatment of VD. In the present study, we investigated the effects of GAS on cognitive dysfunction in rats with VD induced by permanent middle cerebral artery occlusion (pMCAO) and explored the underlying mechanism. Immunohistochemical and western blot analyses revealed that GAS attenuated hippocampal levels of LC3 (microtubule-associated protein 1 light chain 3), p62, and phosphorylated CaMKII (Ca2+-calmodulin stimulated protein kinase II) in VD rats. Additionally, our results revealed that cobalt chloride blocked autophagic flux in HT22 cells, which was confirmed by increased levels of LC3 and p62 when combined with chloroquine. Notably, GAS ameliorated the impaired autophagic flux. Furthermore, we confirmed that GAS combined with KN93 (a CaMKII inhibitor) or CaMKII knockdown did not impact the reduced p62 levels when compared with GAS treatment alone. Furthermore, a co-immunoprecipitation assay demonstrated that endogenous p62 bound to CaMKII, as confirmed by mass spectrometric analysis after the immunoprecipitation of p62 from HT22 cells. These findings revealed that GAS attenuated autophagic flux dysfunction by inhibiting the Ca2+/CaMKII signaling pathway to ameliorate cognitive impairment in VD.
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Affiliation(s)
- Ting-Ting Chen
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,Guiyang Maternal and Child Health-Care Hospital, Guiyang 550000, P.R. China.,The Key Laboratory of Optimal Utilization of Natural Medicine Resources and The Union Key Laboratory of Guiyang City, Guizhou Medical University, School of Pharmaceutical Sciences, Guiyang 550025, P.R. China
| | - Xue Zhou
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Yi-Ni Xu
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Yue Li
- Guiyang Maternal and Child Health-Care Hospital, Guiyang 550000, P.R. China
| | - Xiao-Ying Wu
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,The Key Laboratory of Optimal Utilization of Natural Medicine Resources and The Union Key Laboratory of Guiyang City, Guizhou Medical University, School of Pharmaceutical Sciences, Guiyang 550025, P.R. China
| | - Quan Xiang
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,The Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Ling-Yun Fu
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,The Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Xiao-Xia Hu
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,The Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Ling Tao
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China
| | - Xiang-Chun Shen
- The High Efficacy Application of Natural Medicinal Resources Engineering Center of Guizhou Province and The High Educational Key Laboratory of Guizhou Province for Natural Medicinal Pharmacology and Druggability, School of Pharmaceutical Sciences, Guizhou Medical University, Guiyang 550025, P.R. China.,The Key Laboratory of Optimal Utilization of Natural Medicine Resources and The Union Key Laboratory of Guiyang City, Guizhou Medical University, School of Pharmaceutical Sciences, Guiyang 550025, P.R. China.,The Key Laboratory of Endemic and Ethnic Diseases of Ministry of Education, Guizhou Medical University, Guiyang 550025, P.R. China
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18
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Johnston HE, Samant RS. Alternative systems for misfolded protein clearance: life beyond the proteasome. FEBS J 2020; 288:4464-4487. [PMID: 33135311 DOI: 10.1111/febs.15617] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2020] [Revised: 10/15/2020] [Accepted: 10/30/2020] [Indexed: 12/18/2022]
Abstract
Protein misfolding is a major driver of ageing-associated frailty and disease pathology. Although all cells possess multiple, well-characterised protein quality control systems to mitigate the toxicity of misfolded proteins, how they are integrated to maintain protein homeostasis ('proteostasis') in health-and how their disintegration contributes to disease-is still an exciting and fast-paced area of research. Under physiological conditions, the predominant route for misfolded protein clearance involves ubiquitylation and proteasome-mediated degradation. When the capacity of this route is overwhelmed-as happens during conditions of acute environmental stress, or chronic ageing-related decline-alternative routes for protein quality control are activated. In this review, we summarise our current understanding of how proteasome-targeted misfolded proteins are retrafficked to alternative protein quality control routes such as juxta-nuclear sequestration and selective autophagy when the ubiquitin-proteasome system is compromised. We also discuss the molecular determinants of these alternative protein quality control systems, attempt to clarify distinctions between various cytoplasmic spatial quality control inclusion bodies (e.g., Q-bodies, p62 bodies, JUNQ, aggresomes, and aggresome-like induced structures 'ALIS'), and speculate on emerging concepts in the field that we hope will spur future research-with the potential to benefit the rational development of healthy ageing strategies.
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Affiliation(s)
| | - Rahul S Samant
- Signalling Programme, The Babraham Institute, Cambridge, UK
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19
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Carosi JM, Hein LK, van den Hurk M, Adams R, Milky B, Singh S, Bardy C, Denton D, Kumar S, Sargeant TJ. Retromer regulates the lysosomal clearance of MAPT/tau. Autophagy 2020; 17:2217-2237. [PMID: 32960680 DOI: 10.1080/15548627.2020.1821545] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The macroautophagy/autophagy-lysosome axis enables the clearance and degradation of cytoplasmic components including protein aggregates, damaged organelles and invading pathogens. Protein aggregation and lysosomal system dysfunction in the brain are common features of several late-onset neurological disorders including Alzheimer disease. Spatial overlap between depletion of the endosomal-sorting complex retromer and MAPT/tau aggregation in the brain have been previously reported. However, whether retromer dysfunction plays a direct role in mediating MAPT aggregation remains unclear. Here, we demonstrate that the autophagy-lysosome axis is the primary mode for the clearance of aggregated species of MAPT using both chemical and genetic approaches in cell models of amyloid MAPT aggregation. We show that depletion of the central retromer component VPS35 causes a block in the resolution of autophagy. We establish that this defect underlies marked accumulation of cytoplasmic MAPT aggregates upon VPS35 depletion, and that VPS35 overexpression has the opposite effect. This work illustrates how retromer complex integrity regulates the autophagy-lysosome axis to suppress MAPT aggregation and spread.
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Affiliation(s)
- Julian M Carosi
- Lysosomal Health in Ageing, Hopwood Centre for Neurobiology, South Australian Health & Medical Research Institute, Adelaide, SA, Australia.,Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, SA, Australia.,School of Pharmacy & Medical Science, Division of Health Sciences, University of South Australia, Adelaide, SA, Australia
| | - Leanne K Hein
- Lysosomal Health in Ageing, Hopwood Centre for Neurobiology, South Australian Health & Medical Research Institute, Adelaide, SA, Australia
| | - Mark van den Hurk
- Laboratory for Human Neurophysiology and Genetics, Hopwood Centre for Neurobiology, South Australian Health & Medical Research Institute, Adelaide, SA, Australia
| | - Robert Adams
- Laboratory for Human Neurophysiology and Genetics, Hopwood Centre for Neurobiology, South Australian Health & Medical Research Institute, Adelaide, SA, Australia.,College of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia
| | - Bridget Milky
- Laboratory for Human Neurophysiology and Genetics, Hopwood Centre for Neurobiology, South Australian Health & Medical Research Institute, Adelaide, SA, Australia.,College of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia
| | - Sanjna Singh
- Lysosomal Health in Ageing, Hopwood Centre for Neurobiology, South Australian Health & Medical Research Institute, Adelaide, SA, Australia.,Adelaide Medical School, Faculty of Health and Medical Science, University of Adelaide, Adelaide, SA, Australia
| | - Cedric Bardy
- Laboratory for Human Neurophysiology and Genetics, Hopwood Centre for Neurobiology, South Australian Health & Medical Research Institute, Adelaide, SA, Australia.,College of Medicine and Public Health, Flinders University, Bedford Park, SA, Australia
| | - Donna Denton
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, SA, Australia
| | - Sharad Kumar
- Centre for Cancer Biology, University of South Australia and SA Pathology, Adelaide, SA, Australia
| | - Timothy J Sargeant
- Lysosomal Health in Ageing, Hopwood Centre for Neurobiology, South Australian Health & Medical Research Institute, Adelaide, SA, Australia
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20
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Watanabe Y, Taguchi K, Tanaka M. Ubiquitin, Autophagy and Neurodegenerative Diseases. Cells 2020; 9:cells9092022. [PMID: 32887381 PMCID: PMC7563958 DOI: 10.3390/cells9092022] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/28/2020] [Accepted: 09/02/2020] [Indexed: 12/11/2022] Open
Abstract
Ubiquitin signals play various roles in proteolytic and non-proteolytic functions. Ubiquitin signals are recognized as targets of the ubiquitin–proteasome system and the autophagy–lysosome pathway. In autophagy, ubiquitin signals are required for selective incorporation of cargoes, such as proteins, organelles, and microbial invaders, into autophagosomes. Autophagy receptors possessing an LC3-binding domain and a ubiquitin binding domain are involved in this process. Autophagy activity can decline as a result of genetic variation, aging, or lifestyle, resulting in the onset of various neurodegenerative diseases. This review summarizes the selective autophagy of neurodegenerative disease-associated protein aggregates via autophagy receptors and discusses its therapeutic application for neurodegenerative diseases.
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Affiliation(s)
- Yoshihisa Watanabe
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
- Correspondence: (Y.W.); (M.T.)
| | - Katsutoshi Taguchi
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan;
| | - Masaki Tanaka
- Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan;
- Correspondence: (Y.W.); (M.T.)
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21
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Friesen EL, Zhang YT, Earnshaw R, De Snoo ML, O'Hara DM, Agapova V, Chau H, Ngana S, Chen KS, Kalia LV, Kalia SK. BAG5 Promotes Alpha-Synuclein Oligomer Formation and Functionally Interacts With the Autophagy Adaptor Protein p62. Front Cell Dev Biol 2020; 8:716. [PMID: 32850835 PMCID: PMC7417480 DOI: 10.3389/fcell.2020.00716] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Accepted: 07/13/2020] [Indexed: 11/13/2022] Open
Abstract
Molecular chaperones are critical to maintaining intracellular proteostasis and have been shown to have a protective role against alpha-synuclein-mediated toxicity. Co-chaperone proteins regulate the activity of molecular chaperones and connect the chaperone network to protein degradation and cell death pathways. Bcl-2 associated athanogene 5 (BAG5) is a co-chaperone that modulates proteostasis by inhibiting the activity of Heat shock protein 70 (Hsp70) and several E3 ubiquitin ligases, resulting in enhanced neurodegeneration in models of Parkinson's disease (PD). Here we identify a novel interaction between BAG5 and p62/sequestosome-1 (SQSTM1), suggesting that BAG5 may bridge the chaperone network to autophagy-mediated protein degradation. We found that BAG5 enhanced the formation of pathogenic alpha-synuclein oligomers and regulated the levels and subcellular distribution of p62. These results extend the role of BAG5 in alpha-synuclein processing and intracellular proteostasis.
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Affiliation(s)
- Erik L Friesen
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada
| | - Yu Tong Zhang
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada
| | - Rebecca Earnshaw
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada
| | - Mitch L De Snoo
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada
| | - Darren M O'Hara
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada
| | - Victoria Agapova
- Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada
| | - Hien Chau
- Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada
| | - Sophie Ngana
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada
| | - Kevin S Chen
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada
| | - Lorraine V Kalia
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada.,Division of Neurology, Department of Medicine, University of Toronto, Toronto, ON, Canada
| | - Suneil K Kalia
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON, Canada.,Division of Genetics and Development, Krembil Research Institute, Toronto, ON, Canada.,Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, ON, Canada
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22
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Joshi V, Upadhyay A, Prajapati VK, Mishra A. How autophagy can restore proteostasis defects in multiple diseases? Med Res Rev 2020; 40:1385-1439. [PMID: 32043639 DOI: 10.1002/med.21662] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2019] [Revised: 01/03/2020] [Accepted: 01/28/2020] [Indexed: 12/12/2022]
Abstract
Cellular evolution develops several conserved mechanisms by which cells can tolerate various difficult conditions and overall maintain homeostasis. Autophagy is a well-developed and evolutionarily conserved mechanism of catabolism, which endorses the degradation of foreign and endogenous materials via autolysosome. To decrease the burden of the ubiquitin-proteasome system (UPS), autophagy also promotes the selective degradation of proteins in a tightly regulated way to improve the physiological balance of cellular proteostasis that may get perturbed due to the accumulation of misfolded proteins. However, the diverse as well as selective clearance of unwanted materials and regulations of several cellular mechanisms via autophagy is still a critical mystery. Also, the failure of autophagy causes an increase in the accumulation of harmful protein aggregates that may lead to neurodegeneration. Therefore, it is necessary to address this multifactorial threat for in-depth research and develop more effective therapeutic strategies against lethal autophagy alterations. In this paper, we discuss the most relevant and recent reports on autophagy modulations and their impact on neurodegeneration and other complex disorders. We have summarized various pharmacological findings linked with the induction and suppression of autophagy mechanism and their promising preclinical and clinical applications to provide therapeutic solutions against neurodegeneration. The conclusion, key questions, and future prospectives sections summarize fundamental challenges and their possible feasible solutions linked with autophagy mechanism to potentially design an impactful therapeutic niche to treat neurodegenerative diseases and imperfect aging.
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Affiliation(s)
- Vibhuti Joshi
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Karwar, India
| | - Arun Upadhyay
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Karwar, India
| | - Vijay K Prajapati
- Department of Biochemistry, School of Life Sciences, Central University of Rajasthan, Ajmer, India
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Karwar, India
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23
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Song D, Chen Y, Wang B, Li D, Xu C, Huang H, Huang S, Liu R. Bisphenol A inhibits autophagosome-lysosome fusion and lipid droplet degradation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2019; 183:109492. [PMID: 31421534 DOI: 10.1016/j.ecoenv.2019.109492] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Revised: 07/06/2019] [Accepted: 07/28/2019] [Indexed: 06/10/2023]
Abstract
Bisphenol A (BPA) is an artificial xenoestrogen widely used in consumer products containing polycarbonate plastics and epoxy resins. Exposure to BPA occurs through various channels, including ingestion of contaminated food and water. Autophagy is an important catabolic pathway that plays an important role in liver lipid metabolism. Evidence suggests that BPA exposure causes abnormal lipid droplet accumulation in liver, but the mechanism remains unknown. Here, we investigate the function of BPA in lipid metabolism and autophagy. BPA exposure increases lipid droplet and ROS accumulation which is accompanied by a defect in the fusion of the autophagosome to the lysosome. BPA exposure decreases the translocation of Stx17 to lysosome resulting in the autophagogome-lysosome fusion defect. There is no defect in the formation of the autophagosome indicated by increased LC3-II, p62 level, GFP/mRFP-LC3 ratios and decreased colocalization between LAMP2 with LC3. Mechanistically, BPA exposure reduces autophagy SNARE complex formation. Promoting autophagy by autophagy inducer (Torin2) partially reverses lipid droplet accumulation caused by BPA exposure. In summary, our results demonstrate BPA exposure inhibits autophagy resulting in decreased lipid droplet degradation and increased ROS levels. These results also provide a novel implication between autophagosome-lysosome fusion.
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Affiliation(s)
- Dan Song
- Nanjing Agricultural University, Nanjing, 210095, China
| | - Yu Chen
- Nanjing Agricultural University, Nanjing, 210095, China
| | - Binran Wang
- Department of Pathogen Biology, School of Basic Medicine, Huazhong University of Science and Technology, Wuhan, China
| | - Diana Li
- Department of Nutritional Sciences, University of Connecticut, Storrs, CT, United States
| | - Chao Xu
- Nanjing Agricultural University, Nanjing, 210095, China
| | - Hong Huang
- Nanjing Agricultural University, Nanjing, 210095, China
| | - Saifei Huang
- Nanjing Agricultural University, Nanjing, 210095, China
| | - Rong Liu
- Nanjing Agricultural University, Nanjing, 210095, China; National Center for International Research on Animal Gut Nutrition, Nanjing, 210095, China; Jiangsu Collaborative Innovation Center of Meat Production and Processing, Nanjing, 210095, China.
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24
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Lysosome restoration to activate podocyte autophagy: a new therapeutic strategy for diabetic kidney disease. Cell Death Dis 2019; 10:806. [PMID: 31649253 PMCID: PMC6813305 DOI: 10.1038/s41419-019-2002-6] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 09/04/2019] [Accepted: 09/23/2019] [Indexed: 01/13/2023]
Abstract
Autophagy, the intracellular lysosomal degradation process plays a pivotal role in podocyte homeostasis in diabetic kidney disease (DKD). Lysosomal function, autophagic activity, and their actions were investigated in vitro and in vivo. We found that LC3-II- and p62-positive vacuoles accumulated in podocytes of patients with DKD. Moreover, we found that advanced glycation end products (AGEs) could increase the protein expression of LC3-II and p62 in a dose- and time-dependent manner in cultured podocytes. However, the mRNA expression of LC3B, Beclin-1 or ATG7, as well as the protein level of Beclin-1 or ATG7 did not change significantly in the AGE-treated cells compared with that in control groups, suggesting that AGEs did not induce autophagy. In addition, AGEs led to an increase in the number of autophagosomes but not autolysosomes, accompanied with a failure in lysosomal turnover of LC3-II or p62, indicating that the degradation of autophagic vacuoles was blocked. Furthermore, we observed a dramatic decrease in the enzymatic activities, and the degradation of DQ-ovalbumin was significantly suppressed after podocytes were treated with AGEs. Plasma-irregular lysosomal-associated membrane protein 1 granules accompanied with the diffusion of cathepsin D expression and acridine orange redistribution were observed in AGE-treated podocytes, indicating that the lysosomal membrane permeability was triggered. Interestingly, we also found that AGEs-induced autophagic inhibition and podocyte injury were mimicked by the specific lysosomotropic agent, l-leucyl-l-leucine methyl ester. The exacerbated apoptosis and Rac-1-dependent actin-cytoskeletal disorganization were alleviated by an improvement in the lysosomal-dependent autophagic pathway by resveratrol plus vitamin E treatment in AGE-treated podocytes. However, the rescued effects were reversed by the addition of leupeptin, a lysosomal inhibitor. It suggests that restoring lysosomal function to activate autophagy may contribute to the development of new therapeutic strategies for DKD.
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25
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Zhang B, Chen H, Ouyang J, Xie Y, Chen L, Tan Q, Du X, Su N, Ni Z, Chen L. SQSTM1-dependent autophagic degradation of PKM2 inhibits the production of mature IL1B/IL-1β and contributes to LIPUS-mediated anti-inflammatory effect. Autophagy 2019; 16:1262-1278. [PMID: 31500508 DOI: 10.1080/15548627.2019.1664705] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
Synovitis is implicated in the pathology of osteoarthritis (OA) and significantly contributes to the development of OA. As a noninvasive physical therapy, low-intensity pulsed ultrasound (LIPUS) has been reported to possess anti-inflammatory effect in recent years. However, the role of LIPUS on synovitis of OA and the underlying mechanisms are little known. The present study showed that LIPUS ameliorated synovial inflammation in destabilization of the medial meniscus (DMM) mouse model and air pouch model, and alleviated pain gait patterns of DMM mouse. LIPUS dramatically inhibited the production of mature IL1B/IL-1β (interleukin 1 beta) in vitro and in vivo. In addition, LIPUS upregulated the macroautophagy/autophagy level as well as accelerated the formation of an SQSTM1 (sequestosome1)-PKM (pyruvate kinase, muscle) complex in the lipopolysaccharide (LPS)-adenosine triphosphate (ATP)-treated macrophages. Besides, LIPUS downregulated the level of PKM2 in LPS-ATP-treated macrophages, which could be reversed by SQSTM1 knockdown. In brief, the present study for the first time demonstrates that LIPUS inhibits the production of mature IL1B partially via SQSTM1-dependent autophagic degradation of PKM2 in LPS-ATP-treated macrophages, which may further ameliorate the synovial inflammation and gait patterns in animal models. Our data provide new clues for the treatments of synovitis and other inflammatory diseases using LIPUS. ABBREVIATIONS 3-MA: 3-methyladenene; ATG7: autophagy-related 7; ATP: adenosine triphosphate; BafA1: bafilomycin A1; BMDMs: bone marrow derived macrophages; CHX: cycloheximide; DMM: destabilization of the medial meniscus; ELISA: enzyme-linked immunosorbent assay; GFP: green fluorescent protein; IL1B/IL-1β: interleukin 1 beta; LIPUS: low-intensity pulsed ultrasound; LIR: LC3-interacting region; LPS: lipopolysaccharide; MAP1LC3B/LC3B: microtubule associated protein 1 light chain 3 beta; MDP: muramyl dipeptide; NFKB/NF-κB: nuclear factor kappa B; NLRP3: NLR family, pyrin domain containing 3; OA: osteoarthritis; PKM/PKM2: pyruvate kinase M1/2; PMA: phorbol-12-myristate-13-acetate; PYCARD/ASC; PYD and CARD domain containing; RFP: red fluorescent protein; siRNAs: small interfering RNAs; SQSTM1: sequestosome 1; TEM: transmission electron microscopy.
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Affiliation(s)
- Bin Zhang
- Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Laboratory for the Prevention and Rehabilitation of Military Training Related Injuries, Daping Hospital, Army medical University (Third Military Medical University) , Chongqing, China
| | - Hangang Chen
- Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Laboratory for the Prevention and Rehabilitation of Military Training Related Injuries, Daping Hospital, Army medical University (Third Military Medical University) , Chongqing, China
| | - Junjie Ouyang
- Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Laboratory for the Prevention and Rehabilitation of Military Training Related Injuries, Daping Hospital, Army medical University (Third Military Medical University) , Chongqing, China
| | - Yangli Xie
- Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Laboratory for the Prevention and Rehabilitation of Military Training Related Injuries, Daping Hospital, Army medical University (Third Military Medical University) , Chongqing, China
| | - Liang Chen
- Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Laboratory for the Prevention and Rehabilitation of Military Training Related Injuries, Daping Hospital, Army medical University (Third Military Medical University) , Chongqing, China
| | - Qiaoyan Tan
- Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Laboratory for the Prevention and Rehabilitation of Military Training Related Injuries, Daping Hospital, Army medical University (Third Military Medical University) , Chongqing, China
| | - Xiaolan Du
- Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Laboratory for the Prevention and Rehabilitation of Military Training Related Injuries, Daping Hospital, Army medical University (Third Military Medical University) , Chongqing, China
| | - Nan Su
- Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Laboratory for the Prevention and Rehabilitation of Military Training Related Injuries, Daping Hospital, Army medical University (Third Military Medical University) , Chongqing, China
| | - Zhenhong Ni
- Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Laboratory for the Prevention and Rehabilitation of Military Training Related Injuries, Daping Hospital, Army medical University (Third Military Medical University) , Chongqing, China
| | - Lin Chen
- Center of Bone Metabolism and Repair, State Key Laboratory of Trauma, Burns and Combined Injury, Trauma Center, Research Institute of Surgery, Laboratory for the Prevention and Rehabilitation of Military Training Related Injuries, Daping Hospital, Army medical University (Third Military Medical University) , Chongqing, China
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26
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Jeong SJ, Zhang X, Rodriguez-Velez A, Evans TD, Razani B. p62/ SQSTM1 and Selective Autophagy in Cardiometabolic Diseases. Antioxid Redox Signal 2019; 31:458-471. [PMID: 30588824 PMCID: PMC6653798 DOI: 10.1089/ars.2018.7649] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Significance: p62/SQSTM1 is a multifunctional scaffolding protein involved in the regulation of various signaling pathways as well as autophagy. In particular, p62/SQSTM1 serves as an essential adaptor to identify and deliver specific organelles and protein aggregates to autophagosomes for degradation, a process known as selective autophagy. Critical Issues: With the emergence of autophagy as a critical process in cellular metabolism and the development of cardiometabolic diseases, it is increasingly important to understand p62's role in the integration of signaling and autophagic pathways. Recent Advances: This review first discusses the features that make p62/SQSTM1 an ideal chaperone in integrating signaling pathways with autophagy and details the current understanding of its diverse roles in selective autophagy processes. Distinct and overlapping roles of other chaperones with similar functions are then discussed in the context of p62/SQSTM1. Finally, the recent literature focusing on p62 and selective autophagy in metabolism and the spectrum of cardiometabolic diseases including atherosclerosis, fatty liver disease, and obesity is evaluated. Future Directions: A comprehensive understanding of the nuanced roles p62/SQSTM1 plays in mediating distinct autophagy pathways would provide new insights into the mechanisms of this critical degradative pathway. This will, in turn, facilitate our understanding of cardiovascular and cardiometabolic disease pathology and the development of novel autophagy-modulating therapeutic strategies.
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Affiliation(s)
- Se-Jin Jeong
- 1 Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Xiangyu Zhang
- 1 Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Astrid Rodriguez-Velez
- 1 Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Trent D Evans
- 1 Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri
| | - Babak Razani
- 1 Cardiovascular Division, Department of Medicine, Washington University School of Medicine, St. Louis, Missouri.,2 Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri.,3 John Cochran VA Medical Center, St. Louis, Missouri
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27
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Pellegrini D, Del Grosso A, Angella L, Giordano N, Dilillo M, Tonazzini I, Caleo M, Cecchini M, McDonnell LA. Quantitative Microproteomics Based Characterization of the Central and Peripheral Nervous System of a Mouse Model of Krabbe Disease. Mol Cell Proteomics 2019; 18:1227-1241. [PMID: 30926673 PMCID: PMC6553931 DOI: 10.1074/mcp.ra118.001267] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2018] [Revised: 03/15/2019] [Indexed: 11/06/2022] Open
Abstract
Krabbe disease is a rare, childhood lysosomal storage disorder caused by a deficiency of galactosylceramide beta-galactosidase (GALC). The major effect of GALC deficiency is the accumulation of psychosine in the nervous system and widespread degeneration of oligodendrocytes and Schwann cells, causing rapid demyelination. The molecular mechanisms of Krabbe disease are not yet fully elucidated and a definite cure is still missing. Here we report the first in-depth characterization of the proteome of the Twitcher mouse, a spontaneous mouse model of Krabbe disease, to investigate the proteome changes in the Central and Peripheral Nervous System. We applied a TMT-based workflow to compare the proteomes of the corpus callosum, motor cortex and sciatic nerves of littermate homozygous Twitcher and wild-type mice. More than 400 protein groups exhibited differences in expression and included proteins involved in pathways that can be linked to Krabbe disease, such as inflammatory and defense response, lysosomal proteins accumulation, demyelination, reduced nervous system development and cell adhesion. These findings provide new insights on the molecular mechanisms of Krabbe disease, representing a starting point for future functional experiments to study the molecular pathogenesis of Krabbe disease. Data are available via ProteomeXchange with identifier PXD010594.
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Affiliation(s)
- Davide Pellegrini
- From ‡NEST, Scuola Normale Superiore, Pisa 56127, Italy
- §Fondazione Pisana per la Scienza ONLUS, 56107 San Giuliano Terme, Pisa, Italy
| | - Ambra Del Grosso
- From ‡NEST, Scuola Normale Superiore, Pisa 56127, Italy
- ¶NEST, Istituto Nanoscienze-CNR, Pisa, Italy
| | | | | | - Marialaura Dilillo
- §Fondazione Pisana per la Scienza ONLUS, 56107 San Giuliano Terme, Pisa, Italy
| | | | | | - Marco Cecchini
- From ‡NEST, Scuola Normale Superiore, Pisa 56127, Italy
- ¶NEST, Istituto Nanoscienze-CNR, Pisa, Italy
| | - Liam A McDonnell
- §Fondazione Pisana per la Scienza ONLUS, 56107 San Giuliano Terme, Pisa, Italy;
- **Center for Proteomics and Metabolomics, Leiden University Medical Center, Leiden, The Netherlands
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28
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Kim WY, Nam SA, Choi A, Kim YM, Park SH, Kim HL, Kim H, Han KH, Yang CW, Lee MS, Kim YK, Kim J. Atg7-dependent canonical autophagy regulates the degradation of aquaporin 2 in prolonged hypokalemia. Sci Rep 2019; 9:3021. [PMID: 30816234 PMCID: PMC6395725 DOI: 10.1038/s41598-019-39702-4] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Accepted: 11/23/2018] [Indexed: 01/31/2023] Open
Abstract
Prolonged hypokalemia induces a decrease of urinary concentrating ability via down-regulation of aquaporin 2 (AQP2); however, the precise mechanisms remain unknown. To investigate the role of autophagy in the degradation of AQP2, we generated the principal cell-specific Atg7 deletion (Atg7Δpc) mice. In hypokalemic Atg7-floxed (Atg7f/f) mice, huge irregular shaped LC3-positive autophagic vacuoles accumulated mainly in inner medullary collecting duct (IMCD) cells. Total- and pS261-AQP2 were redistributed from apical and subapical domains into these vacuoles, which were not co-localized with RAB9. However, in the IMCD cells of hypokalemic Atg7Δpc mice, these canonical autophagic vacuoles were markedly reduced, whereas numerous small regular shaped LC3-negative/RAB9-positive non-canonical autophagic vacuoles were observed along with diffusely distributed total- and pS261-AQP2 in the cytoplasm. The immunoreactivity of pS256-AQP2 in the apical membrane of IMCD cells was markedly decreased, and no redistribution was observed in both hypokalemic Atg7f/f and Atg7Δpc mice. These findings suggest that AQP2 down regulation in hypokalemia was induced by reduced phosphorylation of AQP2, resulting in a reduction of apical plasma labeling of pS256-AQP2 and degradation of total- and pS261-AQP2 via an LC3/ATG7-dependent canonical autophagy pathway.
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Affiliation(s)
- Wan-Young Kim
- Department of Anatomy and Cell Death Disease Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sun Ah Nam
- Department of Anatomy and Cell Death Disease Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Arum Choi
- Department of Anatomy and Cell Death Disease Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Yu-Mi Kim
- Department of Anatomy and Cell Death Disease Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Sang Hee Park
- Institute of Clinical Medicine Research of Bucheon St. Mary's Hospital, Bucheon, Korea
| | - Hong Lim Kim
- Integrative Research Support Center, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Hyang Kim
- Division of Nephrology, Kangbuk Samsung Hospital, Sungkyunkwan University, School of Medicine, Seoul, Korea
| | - Ki-Hwan Han
- Department of Anatomy, Ewha Womans University School of Medicine, Seoul, Korea
| | - Chul Woo Yang
- Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea
| | - Myung-Shik Lee
- Severance Biomedical Science Institute, College of Medicine, Yonsei University, Seoul, Korea
| | - Yong Kyun Kim
- Department of Anatomy and Cell Death Disease Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea. .,Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.
| | - Jin Kim
- Department of Anatomy and Cell Death Disease Research Center, College of Medicine, The Catholic University of Korea, Seoul, Korea.
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Wu RN, Yu TY, Zhou JC, Li M, Gao HK, Zhao C, Dong RQ, Peng D, Hu ZW, Zhang XW, Wu YQ. Targeting HMGB1 ameliorates cardiac fibrosis through restoring TLR2-mediated autophagy suppression in myocardial fibroblasts. Int J Cardiol 2019; 267:156-162. [PMID: 29957254 DOI: 10.1016/j.ijcard.2018.04.103] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/29/2017] [Revised: 04/19/2018] [Accepted: 04/23/2018] [Indexed: 01/14/2023]
Abstract
BACKGROUND Extracellular high-mobility group box 1 (HMGB1) has been identified as playing a critical role in the pathogenesis of tissue fibrosis. However, the underlying mechanism of its involvement in cardiac fibrosis is still not well-defined. Here, we aim to investigate whether toll-like receptor 2 (TLR2) contributes to the extracellular HMGB1-mediated development and progression of cardiac fibrosis. METHODS A mouse model of cardiac fibrosis was induced by subcutaneous injection of isoproterenol (ISO). Glycyrrhizic acid (GA), an inhibitor of HMGB1 derived from natural products, was simultaneously administered by intraperitoneal injection. Echocardiography, H&E and Sirius red staining were used to evaluate cardiac function and fibrosis. The myocardial expression of autophagy-associated proteins was examined using immunoblotting. Cardiac fibroblasts were treated with different concentrations of HMGB1 to examine the expression levels of α-SMA, collagen I and autophagy markers. Interactions of HMGB1/TLR2 and α-SMA/p62 were examined by immunoprecipitation and immunofluorescence. RESULTS ISO-treated mice showed characteristic cardiac fibrosis, increased expression and co-localization of HMGB1 and TLR2, as well as impaired autophagic signals in myocardial tissues, which could be prevented by silencing TLR2. Exogenous administration of HMGB1 blocked the autophagic flux in fibroblasts, which caused extensive accumulation of collagen I and α-SMA. In addition, cardiac fibrosis was alleviated by GA treatment through abrogating the interaction between HMGB1 and TLR2. CONCLUSIONS Our study suggests that the interaction between TLR2 and HMGB1 contributes to the pathogenesis of cardiac fibrosis via suppressing fibroblast autophagy, and that inhibiting HMGB1 with GA provides therapeutic benefits for the treatment of fibroproliferative heart diseases.
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Affiliation(s)
- Ri-Na Wu
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China; Department of Cardiology, Baotou Central Hospital, Inner Mongolia, China
| | - Tian-Yu Yu
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Ji-Chao Zhou
- Molecular Immunology and Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Meng Li
- Department of Cardiology, Baotou Central Hospital, Inner Mongolia, China
| | - Hui-Kuan Gao
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Can Zhao
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Rui-Qing Dong
- Department of Cardiology, Hangzhou First People's Hospital, Nanjing Medical University, Zhejiang, China
| | - Dian Peng
- Molecular Immunology and Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Zhuo-Wei Hu
- Molecular Immunology and Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
| | - Xiao-Wei Zhang
- Molecular Immunology and Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China.
| | - Yong-Quan Wu
- Department of Cardiology, Beijing Friendship Hospital, Capital Medical University, Beijing, China.
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Kaliszczak M, van Hechanova E, Li Y, Alsadah H, Parzych K, Auner HW, Aboagye EO. The HDAC6 inhibitor C1A modulates autophagy substrates in diverse cancer cells and induces cell death. Br J Cancer 2018; 119:1278-1287. [PMID: 30318510 PMCID: PMC6251030 DOI: 10.1038/s41416-018-0232-5] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Revised: 07/18/2018] [Accepted: 07/25/2018] [Indexed: 01/07/2023] Open
Abstract
BACKGROUND Cytosolic deacetylase histone deacetylase 6 (HDAC6) is involved in the autophagy degradation pathway of malformed proteins, an important survival mechanism in cancer cells. We evaluated modulation of autophagy-related proteins and cell death by the HDAC6-selective inhibitor C1A. METHODS Autophagy substrates (light chain-3 (LC-3) and p62 proteins) and endoplasmic reticulum (ER) stress phenotype were determined. Caspase-3/7 activation and cellular proliferation assays were used to assess consequences of autophagy modulation. RESULTS C1A potently resolved autophagy substrates induced by 3-methyladenine and chloroquine. The mechanism of autophagy inhibition by HDAC6 genetic knockout or C1A treatment was consistent with abrogation of autophagosome-lysosome fusion, and decrease of Myc protein. C1A alone or combined with the proteasome inhibitor, bortezomib, enhanced cell death in malignant cells, demonstrating the complementary roles of the proteasome and autophagy pathways for clearing malformed proteins. Myc-positive neuroblastoma, KRAS-positive colorectal cancer and multiple myeloma cells showed marked cell growth inhibition in response to HDAC6 inhibitors. Finally, growth of neuroblastoma xenografts was arrested in vivo by single agent C1A, while combination with bortezomib slowed the growth of colorectal cancer xenografts. CONCLUSIONS C1A resolves autophagy substrates in malignant cells and induces cell death, warranting its use for in vivo pre-clinical autophagy research.
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Affiliation(s)
- Maciej Kaliszczak
- Department of Surgery and Cancer, Cancer Imaging Centre, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
- Pre-clinical Imaging and Pharmacology, Biogen, 125 Broadway Street, Cambridge, MA, 02142, USA
| | - Erich van Hechanova
- Department of Surgery and Cancer, Cancer Imaging Centre, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
- Developmental Biology of Birth Defects Section, UCL Great Ormond Street Institute of Child Health, University College London, 30 Guilford Street, London, WC1N 1EH, UK
| | - Yunqing Li
- Department of Surgery and Cancer, Cancer Imaging Centre, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - Hibah Alsadah
- Cancer Cell Protein Metabolism Group, Department of Medicine, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - Katarzyna Parzych
- Cancer Cell Protein Metabolism Group, Department of Medicine, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - Holger W Auner
- Cancer Cell Protein Metabolism Group, Department of Medicine, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK
| | - Eric O Aboagye
- Department of Surgery and Cancer, Cancer Imaging Centre, Imperial College London, Hammersmith Hospital, Du Cane Road, London, W12 0NN, UK.
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31
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Xu Y, Zhang S, Zheng H. The cargo receptor SQSTM1 ameliorates neurofibrillary tangle pathology and spreading through selective targeting of pathological MAPT (microtubule associated protein tau). Autophagy 2018; 15:583-598. [PMID: 30290707 PMCID: PMC6526869 DOI: 10.1080/15548627.2018.1532258] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Accumulating evidence suggests that misfolded MAPT (microtubule associated protein tau), the main component of neurofibrillary tangles in tauopathies, is subject to degradation by the autophagy-lysosomal pathway. Selective autophagy is a subtype of macroautophagy that requires cargo receptors, such as OPTN (optineurin) or SQSTM1, to recognize specific targets for their sequestration within the autophagosome and their eventual degradation by the lysosome, although their roles in targeting distinct MAPT species have not been fully investigated. Using cargo receptor knockout cell lines and a seeding-based cellular assay in which neurofibrillary tangle pathology can be modeled in vitro, we reveal that while OPTN primarily targets soluble MAPT expressed in physiological conditions, SQSTM1 predominantly degrades insoluble but not soluble mutant MAPT. Endogenous SQSTM1 colocalizes with misfolded and aggregated MAPT species in vitro and in vivo, and both this colocalization and its function in MAPT clearance require both the LC3-interacting region (LIR) motif and also the PB1 self-polymerization domain of SQSTM1. Further, pathogenic MAPT accumulation reduces basal macroautophagy/autophagy in vitro and is associated with a compensatory upregulation of the lysosomal pathway in vivo. Finally, increased expression of SQSTM1 in MAPT transgenic mouse brains ameliorates MAPT pathology and prion-like spreading. Our results uncover distinct properties of selective autophagy receptors in targeting different MAPT species, implicate compromised autophagy as a potential underlying factor in mutant MAPT deposition, and demonstrate a potent and specific role of SQSTM1 in targeted clearance of pathogenic MAPT, through which it blocks neurofibrillary tangle accumulation and pathological spreading. Abbreviations: AAV: adeno-associated virus; AD: Alzheimer disease; ALP: autophagy-lysosomal pathway; ALS: amyotrophic lateral sclerosis; CALCOCO2/NDP52: calcium binding and coiled-coil domain 2; FTD: frontotemporal dementias; HD: Huntington disease; HTT: huntingtin; LIR: LC3-interacting region; NBR1: autophagy cargo receptor; NFE2L2/Nrf2: nuclear factor, erythroid derived 2, like 2; NFTs: neurofibrillary tangles; MAPT: microtubule associated protein tau; OPTN: optineurin; p-MAPT: hyperphosphorylated MAPT; PFA: paraformaldehyde; TARDBP/TDP-43: TAR DNA binding protein; TAX1BP1 Tax1: binding protein 1; ThioS: thioflavin-S; UBA: ubiquitin-associated.
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Affiliation(s)
- Yin Xu
- Huffington Center on Aging, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Sheng Zhang
- The Brown Foundation Institute of Molecular Medicine, Department of Neurobiology and Anatomy, McGovern Medical School, University of Texas Health Science Center at Houston, Houston, TX, USA
| | - Hui Zheng
- Huffington Center on Aging, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA,CONTACT Hui Zheng Huffington Center on Aging, Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
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32
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Kowalski E, Geng S, Rathes A, Lu R, Li L. Toll-interacting protein differentially modulates HIF1α and STAT5-mediated genes in fibroblasts. J Biol Chem 2018; 293:12239-12247. [PMID: 29921584 DOI: 10.1074/jbc.ra118.003382] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 06/11/2018] [Indexed: 11/06/2022] Open
Abstract
Toll-interacting protein (Tollip) deficiency has been implicated in complex inflammatory and infectious diseases whose mechanisms are poorly understood. Comparing the gene expression profiles of WT and Tollip-deficient murine embryonic fibroblasts, we observed here that Tollip deficiency selectively reduces the expression of the inflammatory cytokines interleukin 6 (IL-6), IL-12, and tumor necrosis factor α (TNFα) but potentiates the expression of fatty acid-binding protein 4 (FABP4) in these cells. We also observed that expression of hypoxia-inducible factor 1-α (HIF1α) is reduced, whereas that of signal transducer and activator of transcription 5 (STAT5) is elevated, in Tollip-deficient cells, correlating with the decreased expression of inflammatory cytokines and increased expression of FABP4 in these cells. We further found that the coupling of ubiquitin to ER degradation (CUE) domain of Tollip is required for stimulating HIF1α activity, because Tollip CUE-domain mutant cells exhibited reduced levels of HIF1α and selected cytokines. Tollip is known to mediate autophagy and lysosome fusion, and herein we observed that Tollip's autophagy function is required for modulating STAT5 and FABP4 expression. Bafilomycin A, an inhibitor of lysosome fusion, enhanced STAT5 and FABP4 expression in WT fibroblasts, whereas torin 2, an activator of autophagy, reduced STAT5 and FABP4 expression in Tollip-deficient fibroblasts. Taken together, our study reveals that Tollip differentially modulates HIF1α and STAT5 expression in fibroblasts, potentially explaining the complex and context-dependent contribution of Tollip to disease development.
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Affiliation(s)
- Elizabeth Kowalski
- Department of Biological Sciences and Biochemistry, Virginia Tech, Blacksburg, Virginia 24061
| | - Shuo Geng
- Department of Biological Sciences and Biochemistry, Virginia Tech, Blacksburg, Virginia 24061
| | - Allison Rathes
- Department of Biological Sciences and Biochemistry, Virginia Tech, Blacksburg, Virginia 24061
| | - Ran Lu
- Department of Biological Sciences and Biochemistry, Virginia Tech, Blacksburg, Virginia 24061
| | - Liwu Li
- Department of Biological Sciences and Biochemistry, Virginia Tech, Blacksburg, Virginia 24061.
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33
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Kalathil D, Prasad M, Chelladurai M, John S, Nair AS. Thiostrepton degrades mutant p53 by eliciting an autophagic response in SW480 cells. J Cell Physiol 2018; 233:6938-6950. [PMID: 29665004 DOI: 10.1002/jcp.26601] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2017] [Accepted: 03/14/2018] [Indexed: 12/18/2022]
Abstract
Mutations in p53 gene are one of the hallmarks of tumor development. Specific targeting of mutant p53 protein has a promising role in cancer therapeutics. Our preliminary observation showed destabilization of mutant p53 protein in SW480, MiaPaCa and MDAMB231 cell lines upon thiostrepton treatment. In order to elucidate the mechanism of thiostrepton triggered mutant p53 degradation, we explored the impact of proteasome inhibition on activation of autophagy. Combined treatment of thiostrepton and cycloheximide/chloroquine prevented the degradation of mutant p53 protein, reinforcing autophagy as the means of mutant p53 destabilization. Our initial studies suggested that mutant p53 degradation post THSP treatment was carried out by BAG3 mediated autophagy, based on the evidence of BAG1 to BAG3 switching. Subsequent interactome analysis performed post thiostrepton treatment revealed an association of p53 with autophagosome complex associated proteins such as BAG3, p62 and HSC70. Reaccumulation of p53 was seen in BAG3 silenced cells treated with thiostrepton, thereby confirming the role of BAG3 in destabilization of this molecule. Further, localization of p53 into the lysosome upon THSP treatment substantiated our findings that mutant p53 was degraded by an autopahgic process.
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Affiliation(s)
- Dhanya Kalathil
- Cancer Research Program-4, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Manu Prasad
- Cancer Research Program-4, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Maharrish Chelladurai
- Cancer Research Program-4, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Samu John
- Cancer Research Program-4, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
| | - Asha S Nair
- Cancer Research Program-4, Rajiv Gandhi Centre for Biotechnology, Thiruvananthapuram, India
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34
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Mishra SK, Gao YG, Deng Y, Chalfant CE, Hinchcliffe EH, Brown RE. CPTP: A sphingolipid transfer protein that regulates autophagy and inflammasome activation. Autophagy 2018; 14:862-879. [PMID: 29164996 PMCID: PMC6070007 DOI: 10.1080/15548627.2017.1393129] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 10/06/2017] [Accepted: 10/12/2017] [Indexed: 02/01/2023] Open
Abstract
The macroautophagy/autophagy and inflammasome pathways are linked through their roles in innate immunity and chronic inflammatory disease. Ceramide-1-phosphate (C1P) is a bioactive sphingolipid that regulates pro-inflammatory eicosanoid production. Whether C1P also regulates autophagy and inflammasome assembly/activation is not known. Here we show that CPTP (a protein that traffics C1P from its site of phosphorylation in the trans-Golgi to target membranes) regulates both autophagy and inflammasome activation. In human epithelial cells, knockdown of CPTP (but not GLTP [glycolipid transfer protein]) or expression of C1P binding-site point mutants, stimulated an 8- to 10-fold increase in autophagosomes and altered endogenous LC3-II and SQSTM1/p62 protein expression levels. CPTP depletion-induced autophagy elevated early markers of autophagosome formation (Golgi-derived ATG9A-vesicles, WIPI1), required key phagophore assembly and elongation factors (ATG5, ATG7, ULK1), and suppressed MTOR phosphorylation and that of its downstream target, RPS6KB1/p70S6K. Wild-type CPTP overexpression exerted a protective effect against starvation-induced autophagy. In THP-1 macrophage-like surveillance cells, CPTP knockdown induced not only autophagy but also elevated CASP1/caspase-1 levels, and strongly increased IL1B/interleukin-1β and IL18 release via a NLRP3 (but not NLRC4) inflammasome-based mechanism, while only moderately increasing inflammatory (pyroptotic) cell death. Inflammasome assembly and activation stimulated by CPTP depletion were autophagy dependent. Elevation of intracellular C1P by exogenous C1P treatment (instead of CPTP inhibition) also induced autophagy and IL1B release. Our findings identify human CPTP as an endogenous regulator of early-stage autophagosome assembly and inflammasome-driven, pro-inflammatory cytokine generation and release.
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Affiliation(s)
| | - Yong-Guang Gao
- Hormel Institute, University of Minnesota, Austin, MN USA
| | - Yibin Deng
- Hormel Institute, University of Minnesota, Austin, MN USA
| | - Charles E. Chalfant
- Department of Biochemistry & Molecular Biology, VCU Massey Cancer Center, VCU Institute of Molecular Medicine, VCU Johnson Center for Critical Care and Pulmonary Research, Virginia Commonwealth University, Richmond, VA USA
- Hunter Holmes McGuire Veterans Administration Medical Center, Richmond, VA USA
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Abstract
Autophagy protects colorectal cancer cells against therapeutic intervention. Autophagy is a continuous process, and autophagic flux requires both autophagosome synthesis and their subsequent degradation at lysosomes. Hence, cells with elevated autophagic flux display both rapid autophagosome generation and degradation. Here, we describe an immunoblot protocol coupled to pharmaceutical inhibition of autophagosome clearance to monitor autophagic flux levels between colorectal cancer cell lines.
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36
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Falcon B, Noad J, McMahon H, Randow F, Goedert M. Galectin-8-mediated selective autophagy protects against seeded tau aggregation. J Biol Chem 2017; 293:2438-2451. [PMID: 29282296 PMCID: PMC5818177 DOI: 10.1074/jbc.m117.809293] [Citation(s) in RCA: 79] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2017] [Revised: 12/23/2017] [Indexed: 01/19/2023] Open
Abstract
Assembled tau can transfer between cells and seed the aggregation of soluble tau. This process is thought to underlie the amplification and propagation of tau inclusions throughout the brain in neurodegenerative diseases, including Alzheimer's disease. An understanding of the mechanisms involved may provide strategies for limiting assembled tau propagation. Here, we sought to determine how assembled tau seeds gain access to the cytosol and whether this access triggers cellular defenses. We show that tau assemblies enter cells through clathrin-independent endocytosis and escape from damaged endomembranes into the cytosol, where they seed the aggregation of soluble tau. We also found that the danger receptor galectin-8 detects damaged endomembranes and activates autophagy through recruitment of the cargo receptor nuclear dot protein 52 (NDP52). Inhibition of galectin-8– and NDP52-dependent autophagy increased seeded tau aggregation, indicating that autophagy triggered by damaged endomembranes during the entry of assembled tau seeds protects against tau aggregation, in a manner similar to cellular defenses against cytosol-dwelling microorganisms. A second autophagy cargo receptor, p62, then targeted seeded tau aggregates. Our results reveal that by monitoring endomembrane integrity, cells reduce entry of tau seeds into the cytosol and thereby prevent seeded aggregation. The mechanisms described here may help inform the development of therapies aimed at inhibiting the propagation of protein assemblies in neurodegenerative diseases.
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Affiliation(s)
- Benjamin Falcon
- From the MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
| | - Jessica Noad
- From the MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
| | - Harvey McMahon
- From the MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom
| | - Felix Randow
- From the MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom.,Department of Medicine, University of Cambridge, Cambridge CB2 0QQ, United Kingdom, and
| | - Michel Goedert
- From the MRC Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, United Kingdom, .,Department of Clinical Neurosciences, University of Cambridge, Cambridge CB2 0QQ, United Kingdom
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37
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Jiang X, Bao Y, Liu H, Kou X, Zhang Z, Sun F, Qian Z, Lin Z, Li X, Liu X, Jiang L, Yang Y. VPS34 stimulation of p62 phosphorylation for cancer progression. Oncogene 2017; 36:6850-6862. [PMID: 28846113 PMCID: PMC5735303 DOI: 10.1038/onc.2017.295] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2017] [Revised: 07/14/2017] [Accepted: 07/15/2017] [Indexed: 12/11/2022]
Abstract
Vps34, a class III PtdIns3 lipid kinase involved in the control of both autophagic and endocytic systems, has been studied extensively in numerous fundamental cellular processes. Accumulating evidence indicates that Vps34 may also contribute to the development and progression of human cancers. However, the mechanism of Vps34 in tumorigenesis remains elusive. Here, we report an unanticipated role of Vps34 in the activation of p62 for cancer development. We identified that Vps34 is a transcriptional activator of p62 through competition of Nrf2 (nuclear factor erythroid 2-related factor 2) for Keap1 binding. Vps34 augments the association of PKC-δ with p62 for its phosphorylation at Serine 349, which leads to positive feedback on the Nrf2-dependent transcription of oncogenes. Additionally, we found that the expression of Vps34 is correlated with the tumorigenic activity of human breast cancer cells. Normally inactive in breast cancer, caspase 8 can cleave Vps34 at residue D285, which directly abolished its lipid kinase activity and dramatically altered cell invasion potential, colony formation, as well as tumorigenesis in orthotopic engraftments in mice. The cleavage at D285 blocks expression of LC3-II, Nrf2 and subsequently, p62, in addition to blocking tumor growth, indicating that the intact structure of Vps34 is essential for its activity. Moreover, either knockout of PKC-δ or knockdown of p62 by small interfering RNA in MCF-7 cells abrogates Vps34-dependent tumor growth. Data presented here suggested that Vps34 stimulates tumor development mainly through PKC-δ- activation of p62.
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Affiliation(s)
- X Jiang
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Y Bao
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - H Liu
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - X Kou
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Z Zhang
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - F Sun
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Z Qian
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
| | - Z Lin
- Chemical Biology, Roche Pharmaceutical Research and Early Development, Roche Innovation Center Shanghai, Shanghai, China
| | - X Li
- Department of Gastroenterology, Shanghai Eight People Hospital, Shanghai, China
| | - X Liu
- Department of Pathology, Georgetown University Medical Center, Washington, DC, USA
| | - L Jiang
- Department of Biological Sciences, Oakland University, Rochester, MI, USA
| | - Y Yang
- Department of Pharmacology and Biochemistry, School of Pharmacy, Fudan University, Shanghai, China
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38
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Li C, Siragy HM. Autophagy upregulates (pro)renin receptor expression via reduction of P62/SQSTM1 and activation of ERK1/2 signaling pathway in podocytes. Am J Physiol Regul Integr Comp Physiol 2017; 313:R58-R64. [PMID: 28450279 DOI: 10.1152/ajpregu.00088.2017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Revised: 04/20/2017] [Accepted: 04/21/2017] [Indexed: 12/19/2022]
Abstract
Autophagy plays a major role in podocytes health and disease. P62, also known as sequestosome-1 (SQSTM1), is a marker for autophagic activity and is required for the formation and degradation of ubiquitnated protein by autophagy. Knockout of p62 enhanced extracellular signal-regulated kinases (ERK1/2) activity. (pro)renin receptor (PRR) is expressed in podocytes where it contributes to the homeostasis of these cells. The influence of autophagy on PRR expression is unknown. We hypothesized that in podocytes, upregulation of autophagic activity increases PRR expression via reduction of p62 and stimulation of ERK1/2 signaling pathway. Cultured mouse podocytes were treated with the autophagy activators, rapamycin or Earle's balanced salt solution (EBSS), for 48 h. Both rapamycin and EBSS significantly decreased p62 protein levels, increased ERK1/2 activation by phosphorylating pTpY185/187, and increased mRNA and protein expressions of PRR. Utilizing confocal microscopy demonstrated that rapamycin and EBSS significantly decreased p62/SQSTM1 and increased PRR protein expressions. Similarly, by enhancing autophagic activity by transfection with autophagy-related 5 (ATG5) cDNA or ATG7 cDNA, results similar to those observed with rapamycin and EBSS treatments were produced. Inhibition of autophagic flux with bafilomycin A1 reversed the effects of rapamycin. ERK1/2 inhibitor U0126 significantly attenuated mRNA and protein expressions of PRR in podocytes treated with rapamycin. In conclusion, upregulation of autophagy enhanced PRR expression through reduction of p62 and stimulation of ERK1/2 activity signaling pathway.
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Affiliation(s)
- Caixia Li
- Division of Endocrinology and Metabolism, University of Virginia Health System, Charlottesville, Virginia
| | - Helmy M Siragy
- Division of Endocrinology and Metabolism, University of Virginia Health System, Charlottesville, Virginia
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39
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Watanabe Y, Tsujimura A, Taguchi K, Tanaka M. HSF1 stress response pathway regulates autophagy receptor SQSTM1/p62-associated proteostasis. Autophagy 2016; 13:133-148. [PMID: 27846364 PMCID: PMC5240838 DOI: 10.1080/15548627.2016.1248018] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Proteostasis is important for protecting cells from harmful proteins and is mainly controlled by the HSF1 (heat shock transcription factor 1) stress response pathway. This pathway facilitates protein refolding by molecular chaperones; however, it is unclear whether it functions in autophagy or inclusion formation. The autophagy receptor SQSTM1/p62 is involved in selective autophagic clearance and inclusion formation by harmful proteins, and its phosphorylation at S349, S403, and S407 is required for binding to substrates. Here, we demonstrate that casein kinase 1 phosphorylates the SQSTM1 S349 residue when harmful proteins accumulate. Investigation of upstream factors showed that both SQSTM1 S349 and SQSTM1 S403 residues were phosphorylated in an HSF1 dependent manner. Inhibition of SQSTM1 phosphorylation suppressed inclusion formation by ubiquitinated proteins and prevented colocalization of SQSTM1 with aggregation-prone proteins. Moreover, HSF1 inhibition impaired aggregate-induced autophagosome formation and elimination of protein aggregates. Our findings indicate that HSF1 triggers SQSTM1-mediated proteostasis.
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Affiliation(s)
- Yoshihisa Watanabe
- a Department of Basic Geriatrics , Graduate School of Medical Science, Kyoto Prefectural University of Medicine , Kyoto , Japan
| | - Atsushi Tsujimura
- a Department of Basic Geriatrics , Graduate School of Medical Science, Kyoto Prefectural University of Medicine , Kyoto , Japan
| | - Katsutoshi Taguchi
- b Department of Anatomy and Neurobiology , Graduate School of Medical Science, Kyoto Prefectural University of Medicine , Kyoto , Japan
| | - Masaki Tanaka
- b Department of Anatomy and Neurobiology , Graduate School of Medical Science, Kyoto Prefectural University of Medicine , Kyoto , Japan
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40
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Cohen-Kaplan V, Livneh I, Avni N, Cohen-Rosenzweig C, Ciechanover A. The ubiquitin-proteasome system and autophagy: Coordinated and independent activities. Int J Biochem Cell Biol 2016; 79:403-418. [DOI: 10.1016/j.biocel.2016.07.019] [Citation(s) in RCA: 113] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2016] [Revised: 07/13/2016] [Accepted: 07/18/2016] [Indexed: 01/10/2023]
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41
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Wang DW, Peng ZJ, Ren GF, Wang GX. The different roles of selective autophagic protein degradation in mammalian cells. Oncotarget 2016; 6:37098-116. [PMID: 26415220 PMCID: PMC4741918 DOI: 10.18632/oncotarget.5776] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Accepted: 08/31/2015] [Indexed: 01/01/2023] Open
Abstract
Autophagy is an intracellular pathway for bulk protein degradation and the removal of damaged organelles by lysosomes. Autophagy was previously thought to be unselective; however, studies have increasingly confirmed that autophagy-mediated protein degradation is highly regulated. Abnormal autophagic protein degradation has been associated with multiple human diseases such as cancer, neurological disability and cardiovascular disease; therefore, further elucidation of protein degradation by autophagy may be beneficial for protein-based clinical therapies. Macroautophagy and chaperone-mediated autophagy (CMA) can both participate in selective protein degradation in mammalian cells, but the process is quite different in each case. Here, we summarize the various types of macroautophagy and CMA involved in determining protein degradation. For this summary, we divide the autophagic protein degradation pathways into four categories: the post-translational modification dependent and independent CMA pathways and the ubiquitin dependent and independent macroautophagy pathways, and describe how some non-canonical pathways and modifications such as phosphorylation, acetylation and arginylation can influence protein degradation by the autophagy lysosome system (ALS). Finally, we comment on why autophagy can serve as either diagnostics or therapeutic targets in different human diseases.
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Affiliation(s)
- Da-wei Wang
- Department of Biochemistry and Molecular Biology, School of Medicine, Shandong University, Jinan, Shandong, China
| | - Zhen-ju Peng
- Medical Institute of Paediatrics, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
| | - Guang-fang Ren
- Medical Institute of Paediatrics, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
| | - Guang-xin Wang
- Medical Institute of Paediatrics, Qilu Children's Hospital of Shandong University, Jinan, Shandong, China
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42
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Tahrir FG, Knezevic T, Gupta MK, Gordon J, Cheung JY, Feldman AM, Khalili K. Evidence for the Role of BAG3 in Mitochondrial Quality Control in Cardiomyocytes. J Cell Physiol 2016; 232:797-805. [PMID: 27381181 DOI: 10.1002/jcp.25476] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2016] [Accepted: 07/05/2016] [Indexed: 12/18/2022]
Abstract
Mitochondrial abnormalities impact the development of myofibrillar myopathies. Therefore, understanding the mechanisms underlying the removal of dysfunctional mitochondria from cells is of great importance toward understanding the molecular events involved in the genesis of cardiomyopathy. Earlier studies have ascribed a role for BAG3 in the development of cardiomyopathy in experimental animals leading to the identification of BAG3 mutations in patients with heart failure which may play a part in the onset of disease development and progression. BAG3 is co-chaperone of heat shock protein 70 (HSP70), which has been shown to modulate apoptosis and autophagy, in several cell models. In this study, we explore the potential role of BAG3 in mitochondrial quality control. We demonstrate that siRNA mediated suppression of BAG3 production in neonatal rat ventricular cardiomyocytes (NRVCs) significantly elevates the level of Parkin, a key component of mitophagy. We found that both BAG3 and Parkin are recruited to depolarized mitochondria and promote mitophagy. Suppression of BAG3 in NRVCs significantly reduces autophagy flux and eliminates clearance of Tom20, an essential import receptor for mitochondria proteins, after induction of mitophagy. These observations suggest that BAG3 is critical for the maintenance of mitochondrial homeostasis under stress conditions, and disruptions in BAG3 expression impact cardiomyocyte function. J. Cell. Physiol. 232: 797-805, 2017. © 2016 Wiley Periodicals, Inc.
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Affiliation(s)
- Farzaneh G Tahrir
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Tijana Knezevic
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Manish K Gupta
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Jennifer Gordon
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Joseph Y Cheung
- Center for Translational Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania.,Department of Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Arthur M Feldman
- Department of Medicine, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania.,Cardiovascular Research Center, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
| | - Kamel Khalili
- Department of Neuroscience, Center for Neurovirology, Lewis Katz School of Medicine at Temple University, Philadelphia, Pennsylvania
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43
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Agarwal S, Yadav A, Tiwari SK, Seth B, Chauhan LKS, Khare P, Ray RS, Chaturvedi RK. Dynamin-related Protein 1 Inhibition Mitigates Bisphenol A-mediated Alterations in Mitochondrial Dynamics and Neural Stem Cell Proliferation and Differentiation. J Biol Chem 2016; 291:15923-39. [PMID: 27252377 DOI: 10.1074/jbc.m115.709493] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2015] [Indexed: 11/06/2022] Open
Abstract
The regulatory dynamics of mitochondria comprises well orchestrated distribution and mitochondrial turnover to maintain the mitochondrial circuitry and homeostasis inside the cells. Several pieces of evidence suggested impaired mitochondrial dynamics and its association with the pathogenesis of neurodegenerative disorders. We found that chronic exposure of synthetic xenoestrogen bisphenol A (BPA), a component of consumer plastic products, impaired autophagy-mediated mitochondrial turnover, leading to increased oxidative stress, mitochondrial fragmentation, and apoptosis in hippocampal neural stem cells (NSCs). It also inhibited hippocampal derived NSC proliferation and differentiation, as evident by the decreased number of BrdU- and β-III tubulin-positive cells. All these effects were reversed by the inhibition of oxidative stress using N-acetyl cysteine. BPA up-regulated the levels of Drp-1 (dynamin-related protein 1) and enhanced its mitochondrial translocation, with no effect on Fis-1, Mfn-1, Mfn-2, and Opa-1 in vitro and in the hippocampus. Moreover, transmission electron microscopy studies suggested increased mitochondrial fission and accumulation of fragmented mitochondria and decreased elongated mitochondria in the hippocampus of the rat brain. Impaired mitochondrial dynamics by BPA resulted in increased reactive oxygen species and malondialdehyde levels, disruption of mitochondrial membrane potential, and ATP decline. Pharmacological (Mdivi-1) and genetic (Drp-1siRNA) inhibition of Drp-1 reversed BPA-induced mitochondrial dysfunctions, fragmentation, and apoptosis. Interestingly, BPA-mediated inhibitory effects on NSC proliferation and neuronal differentiations were also mitigated by Drp-1 inhibition. On the other hand, Drp-1 inhibition blocked BPA-mediated Drp-1 translocation, leading to decreased apoptosis of NSC. Overall, our studies implicate Drp-1 as a potential therapeutic target against BPA-mediated impaired mitochondrial dynamics and neurodegeneration in the hippocampus.
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Affiliation(s)
- Swati Agarwal
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and the Academy of Scientific and Innovative Research and
| | - Anuradha Yadav
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and the Academy of Scientific and Innovative Research and
| | - Shashi Kant Tiwari
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and the Academy of Scientific and Innovative Research and
| | - Brashket Seth
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and the Academy of Scientific and Innovative Research and
| | - Lalit Kumar Singh Chauhan
- the Central Instrumentation Facility, Council of Scientific and Industrial Research-Indian Institute of Toxicology Research (CSIR-IITR), Vishvigyan Bhawan, 31, Mahatma Gandhi Marg, Lucknow 226001, Uttar Pradesh, India
| | - Puneet Khare
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and
| | - Ratan Singh Ray
- the Photobiology Laboratory, Systems Toxicology and Health Risk Assessment Group
| | - Rajnish Kumar Chaturvedi
- From the Developmental Toxicology Laboratory, Systems Toxicology and Health Risk Assessment Group and the Academy of Scientific and Innovative Research and
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44
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Aoki M, Watanabe Y, Yoshimoto K, Tsujimura A, Yamamoto T, Kanamura N, Tanaka M. Involvement of serotonin 2C receptor RNA editing in accumbal neuropeptide Y expression and behavioural despair. Eur J Neurosci 2016; 43:1219-28. [PMID: 26950265 DOI: 10.1111/ejn.13233] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2016] [Revised: 03/04/2016] [Accepted: 03/04/2016] [Indexed: 11/30/2022]
Abstract
Serotonin 2C receptors (5-HT2 C Rs) are widely expressed in the central nervous system, and are associated with various neurological disorders. 5-HT2 C R mRNA undergoes adenosine-to-inosine RNA editing at five sites within its coding sequence, resulting in expression of 24 different isoforms. Several edited isoforms show reduced activity, suggesting that RNA editing modulates serotonergic systems in the brain with causative relevance to neuropsychiatric disorders. Transgenic mice solely expressing the non-edited 5-HT2 C R INI-isoform (INI) or the fully edited VGV-isoform exhibit various phenotypes including metabolic abnormalities, aggressive behaviour, anxiety-like behaviour, and depression-like behaviour. Here, we examined the behavioural phenotype and molecular changes of INI mice on a C57BL/6J background. INI mice showed an enhanced behavioural despair in the forced swimming test, elevated sensitivity to the tricyclic antidepressant desipramine, and significantly decreased serotonin in the nucleus accumbens (NAc), amygdala, and striatum. They also showed reduced expression of neuropeptide Y (NPY) mRNA in the NAc. In addition, by stereotactic injection of adeno-associated virus encoding NPY into the NAc, we demonstrated that accumbal NPY overexpression relieved behavioural despair. Our results suggest that accumbal NPY expression may be regulated by 5-HT2 C R RNA editing, and its impairment may be linked to mood disorders.
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Affiliation(s)
- Miku Aoki
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Yoshihisa Watanabe
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Kanji Yoshimoto
- Department of Food Science and Biotechnology, Hiroshima Institute of Technology, Hiroshima, Japan
| | - Atsushi Tsujimura
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Toshiro Yamamoto
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Narisato Kanamura
- Department of Dental Medicine, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Masaki Tanaka
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kyoto, Japan.,Department of Anatomy and Neurobiology, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamikyo-ku, Kyoto, 602-8566, Japan
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45
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Gautam M, Jara JH, Sekerkova G, Yasvoina MV, Martina M, Özdinler PH. Absence of alsin function leads to corticospinal motor neuron vulnerability via novel disease mechanisms. Hum Mol Genet 2016; 25:1074-87. [PMID: 26755825 PMCID: PMC4764190 DOI: 10.1093/hmg/ddv631] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2015] [Accepted: 12/29/2015] [Indexed: 12/11/2022] Open
Abstract
Mutations in the ALS2 gene result in early-onset amyotrophic lateral sclerosis, infantile-onset ascending hereditary spastic paraplegia and juvenile primary lateral sclerosis, suggesting prominent upper motor neuron involvement. However, the importance of alsin function for corticospinal motor neuron (CSMN) health and stability remains unknown. To date, four separate alsin knockout (AlsinKO) mouse models have been generated, and despite hopes of mimicking human pathology, none displayed profound motor function defects. This, however, does not rule out the possibility of neuronal defects within CSMN, which is not easy to detect in these mice. Detailed cellular analysis of CSMN has been hampered due to their limited numbers and the complex and heterogeneous structure of the cerebral cortex. In an effort to visualize CSMN in vivo and to investigate precise aspects of neuronal abnormalities in the absence of alsin function, we generated AlsinKO-UeGFP mice, by crossing AlsinKO and UCHL1-eGFP mice, a CSMN reporter line. We find that CSMN display vacuolated apical dendrites with increased autophagy, shrinkage of soma size and axonal pathology even in the pons region. Immunocytochemistry coupled with electron microscopy reveal that alsin is important for maintaining cellular cytoarchitecture and integrity of cellular organelles. In its absence, CSMN displays selective defects both in mitochondria and Golgi apparatus. UCHL1-eGFP mice help understand the underlying cellular factors that lead to CSMN vulnerability in diseases, and our findings reveal unique importance of alsin function for CSMN health and stability.
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Affiliation(s)
| | | | - Gabriella Sekerkova
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | | | - Marco Martina
- Department of Physiology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - P Hande Özdinler
- Department of Neurology and, Robert H. Lurie Comprehensive Cancer Center and Cognitive Neurology and Alzheimer's Disease Center, Northwestern University, Chicago, IL 60611, USA
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46
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Watson GW, Wickramasekara S, Fang Y, Maier CS, Williams DE, Dashwood RH, Perez VI, Ho E. HDAC6 activity is not required for basal autophagic flux in metastatic prostate cancer cells. Exp Biol Med (Maywood) 2015; 241:1177-85. [PMID: 26643866 DOI: 10.1177/1535370215618518] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2015] [Accepted: 10/28/2015] [Indexed: 12/31/2022] Open
Abstract
Histone deacetylase 6 is a multifunctional lysine deacetylase that is recently emerging as a central facilitator of response to stress and may play an important role in cancer cell proliferation. The histone deacetylase 6-inhibitor tubacin has been shown to slow the growth of metastatic prostate cancer cells and sensitize cancer cells to chemotherapeutic agents. However, the proteins histone deacetylase 6 interacts with, and thus its role in cancer cells, remains poorly characterized. Histone deacetylase 6 deacetylase activity has recently been shown to be required for efficient basal autophagic flux. Autophagy is often dysregulated in cancer cells and may confer stress resistance and allow for cell maintenance and a high proliferation rate. Tubacin may therefore slow cancer cell proliferation by decreasing autophagic flux. We characterized the histone deacetylase 6-interacting proteins in LNCaP metastatic prostate cancer cells and found that histone deacetylase 6 interacts with proteins involved in several cellular processes, including autophagy. Based on our interaction screen, we assessed the impact of the histone deacetylase 6-inhibitor tubacin on autophagic flux in two metastatic prostate cancer cell lines and found that tubacin does not influence autophagic flux. Histone deacetylase 6 therefore influences cell proliferation through an autophagy-independent mechanism.
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Affiliation(s)
- Gregory W Watson
- Molecular and Cellular Biology Program, Oregon State University, Corvallis, OR 97331, USA Biological and Population Health Sciences, Oregon State University, Corvallis, OR 97331, USA
| | | | - Yufeng Fang
- Genetics, Bioinformatics & Computational Biology, Virginia Tech, Blacksburg, VA 24061, USA
| | - Claudia S Maier
- Department of Chemistry, Oregon State University, Corvallis, OR 97331, USA
| | - David E Williams
- Environmental and Molecular Toxicology, Oregon State University, Corvallis, OR 97331, USA Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
| | - Roderick H Dashwood
- Center for Epigenetics and Disease Prevention, Institute of Biosciences and Technology, Texas A&M Science Center, Houston, TX 77030, USA Department of Nutrition & Food Science, Texas A&M University, College Station, TX 77030, USA Department of Clinical Cancer Prevention, MD Anderson Cancer Center, Houston, TX 77030, USA Department of Molecular & Cellular Medicine, Texas A&M University College of Medicine, College Station, TX 77030, USA
| | - Viviana I Perez
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA Department of Biochemistry and Biophysics, Oregon State University, Corvallis, OR 97331, USA
| | - Emily Ho
- Biological and Population Health Sciences, Oregon State University, Corvallis, OR 97331, USA Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
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47
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Navarro-Yepes J, Anandhan A, Bradley E, Bohovych I, Yarabe B, de Jong A, Ovaa H, Zhou Y, Khalimonchuk O, Quintanilla-Vega B, Franco R. Inhibition of Protein Ubiquitination by Paraquat and 1-Methyl-4-Phenylpyridinium Impairs Ubiquitin-Dependent Protein Degradation Pathways. Mol Neurobiol 2015; 53:5229-51. [PMID: 26409479 DOI: 10.1007/s12035-015-9414-9] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Accepted: 09/01/2015] [Indexed: 12/21/2022]
Abstract
Intracytoplasmic inclusions of protein aggregates in dopaminergic cells (Lewy bodies) are the pathological hallmark of Parkinson's disease (PD). Ubiquitin (Ub), alpha (α)-synuclein, p62/sequestosome 1, and oxidized proteins are the major components of Lewy bodies. However, the mechanisms involved in the impairment of misfolded/oxidized protein degradation pathways in PD are still unclear. PD is linked to mitochondrial dysfunction and environmental pesticide exposure. In this work, we evaluated the effects of the pesticide paraquat (PQ) and the mitochondrial toxin 1-methyl-4-phenylpyridinium (MPP(+)) on Ub-dependent protein degradation pathways. No increase in the accumulation of Ub-bound proteins or aggregates was observed in dopaminergic cells (SK-N-SH) treated with PQ or MPP(+), or in mice chronically exposed to PQ. PQ decreased Ub protein content, but not its mRNA transcription. Protein synthesis inhibition with cycloheximide depleted Ub levels and potentiated PQ-induced cell death. The inhibition of proteasomal activity by PQ was found to be a late event in cell death progression and had neither effect on the toxicity of either MPP(+) or PQ, nor on the accumulation of oxidized sulfenylated, sulfonylated (DJ-1/PARK7 and peroxiredoxins), and carbonylated proteins induced by PQ. PQ- and MPP(+)-induced Ub protein depletion prompted the dimerization/inactivation of the Ub-binding protein p62 that regulates the clearance of ubiquitinated proteins by autophagy. We confirmed that PQ and MPP(+) impaired autophagy flux and that the blockage of autophagy by the overexpression of a dominant-negative form of the autophagy protein 5 (dnAtg5) stimulated their toxicity, but there was no additional effect upon inhibition of the proteasome. PQ induced an increase in the accumulation of α-synuclein in dopaminergic cells and membrane-associated foci in yeast cells. Our results demonstrate that the inhibition of protein ubiquitination by PQ and MPP(+) is involved in the dysfunction of Ub-dependent protein degradation pathways.
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Affiliation(s)
- Juliana Navarro-Yepes
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA.,School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, 114 VBS 0905, Lincoln, NE, 68583, USA.,Department of Toxicology, CINVESTAV-IPN, IPN No. 2508, Colonia Zacatenco, Mexico City, D.F., 07360, Mexico
| | - Annadurai Anandhan
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA.,School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, 114 VBS 0905, Lincoln, NE, 68583, USA
| | - Erin Bradley
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Iryna Bohovych
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA.,Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Bo Yarabe
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Annemieke de Jong
- Division of Cell Biology II, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - Huib Ovaa
- Division of Cell Biology II, The Netherlands Cancer Institute, Amsterdam, The Netherlands
| | - You Zhou
- Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Oleh Khalimonchuk
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA.,Department of Biochemistry, University of Nebraska-Lincoln, Lincoln, NE, USA
| | - Betzabet Quintanilla-Vega
- Department of Toxicology, CINVESTAV-IPN, IPN No. 2508, Colonia Zacatenco, Mexico City, D.F., 07360, Mexico.
| | - Rodrigo Franco
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE, USA. .,School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, 114 VBS 0905, Lincoln, NE, 68583, USA.
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48
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Watanabe Y, Tsujimura A, Aoki M, Taguchi K, Tanaka M. Development of the 5-HT2CR-Tango System Combined with an EGFP Reporter Gene. J Mol Neurosci 2015; 58:162-9. [PMID: 26374432 DOI: 10.1007/s12031-015-0650-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Accepted: 09/02/2015] [Indexed: 02/02/2023]
Abstract
The serotonin 2C receptor (5-HT2CR) is a G-protein-coupled receptor implicated in emotion, feeding, reward, and cognition. 5-HT2CRs are pharmacological targets for mental disorders and metabolic and reward system abnormalities, as alterations in 5-HT2CR expression, RNA editing, and SNPs are involved in these disturbances. To date, 5-HT2CR activity has mainly been measured by quantifying inositol phosphate production and intracellular Ca(2+) release, but these assays are not suitable for in vivo analysis. Here, we developed a 5-HT2CR-Tango assay system, a novel analysis tool of 5-HT2CR activity based on the G-protein-coupled receptor (GPCR)-arrestin interaction. With desensitization of activated 5-HT2CR by arrestin, this system converts the 5-HT2CR-arrestin interaction into EGFP reporter gene signal via the LexA transcriptional activation system. For validation of our system, we measured activity of two 5-HT2CR RNA-editing isoforms (INI and VGV) in HEK293 cells transfected with EGFP reporter gene. The INI isoform displayed both higher basal- and 5-HT-stimulated activities than the VGV isoform. Moreover, an inhibitory effect of 5-HT2CR antagonist SB242084 was also detected by 5-HT2CR-Tango system. This novel tool is useful for in vitro high-throughput targeted 5-HT2CR drug screening and can be applied to future in vivo brain function studies associated with 5-HT2CRs in transgenic animal models.
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Affiliation(s)
- Yoshihisa Watanabe
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamikyo-ku, Kyoto, 602-8566, Japan
| | - Atsushi Tsujimura
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamikyo-ku, Kyoto, 602-8566, Japan
| | - Miku Aoki
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamikyo-ku, Kyoto, 602-8566, Japan
- Department of Dental Medicine, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Katsutoshi Taguchi
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamikyo-ku, Kyoto, 602-8566, Japan
| | - Masaki Tanaka
- Department of Basic Geriatrics, Graduate School of Medical Science, Kyoto Prefectural University of Medicine, Kawaramachi-Hirokoji, Kamikyo-ku, Kyoto, 602-8566, Japan.
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49
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Abstract
Macroautophagy (hereafter referred to as autophagy) is a process used by the cell to deliver cytoplasmic components to the lysosome for degradation. Autophagy is most often associated with cell survival, as it provides cells with molecular building blocks during periods of nutrient deprivation and also aids in the elimination of damaged organelles and protein aggregates. However, autophagy has also been implicated in cell death. Here, we review what is known about autophagy, its regulation, its role both in cell life and cell death, and what is known about autophagic cell death in vivo.
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Hua F, Li K, Yu JJ, Lv XX, Yan J, Zhang XW, Sun W, Lin H, Shang S, Wang F, Cui B, Mu R, Huang B, Jiang JD, Hu ZW. TRB3 links insulin/IGF to tumour promotion by interacting with p62 and impeding autophagic/proteasomal degradations. Nat Commun 2015; 6:7951. [PMID: 26268733 PMCID: PMC4557121 DOI: 10.1038/ncomms8951] [Citation(s) in RCA: 114] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2015] [Accepted: 06/29/2015] [Indexed: 12/19/2022] Open
Abstract
High insulin/IGF is a biologic link between diabetes and cancers, but the underlying molecular mechanism remains unclear. Here we report a previously unrecognized tumour-promoting mechanism for stress protein TRB3, which mediates a reciprocal antagonism between autophagic and proteasomal degradation systems and connects insulin/IGF to malignant promotion. We find that several human cancers express higher TRB3 and phosphorylated insulin receptor substrate 1, which correlates negatively with patient's prognosis. TRB3 depletion protects against tumour-promoting actions of insulin/IGF and attenuates tumour initiation, growth and metastasis in mice. TRB3 interacts with autophagic receptor p62 and hinders p62 binding to LC3 and ubiquitinated substrates, which causes p62 deposition and suppresses autophagic/proteasomal degradation. Several tumour-promoting factors accumulate in cancer cells to support tumour metabolism, proliferation, invasion and metastasis. Interrupting TRB3/p62 interaction produces potent antitumour efficacies against tumour growth and metastasis. Our study opens possibility of targeting this interaction as a potential novel strategy against cancers with diabetes.
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Affiliation(s)
- Fang Hua
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Ke Li
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China.,Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Jiao-Jiao Yu
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Xiao-Xi Lv
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Jun Yan
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Xiao-Wei Zhang
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Wei Sun
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Heng Lin
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Shuang Shang
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Feng Wang
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Bing Cui
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Rong Mu
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
| | - Bo Huang
- Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Jian-Dong Jiang
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China.,Institute of Medicinal Biotechnology, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100005, China
| | - Zhuo-Wei Hu
- Immunology and Cancer Pharmacology Group, State Key Laboratory of Bioactive Substance and Function of Natural Medicines, Institute of Materia Medica, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing 100050, China
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