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Mihaylova V, Karalilova R, Batalov Z, Kazakova M, Batalov A, Sarafian V. Inflammation, mitochondrial and lysosomal dysfunction as key players in rheumatoid arthritis? Int Immunopharmacol 2024; 141:112919. [PMID: 39146785 DOI: 10.1016/j.intimp.2024.112919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2024] [Revised: 08/06/2024] [Accepted: 08/07/2024] [Indexed: 08/17/2024]
Abstract
Rheumatoid arthritis (RA) is an inflammatory joint disease characterized by persistent synovitis and inflammation. The exact mechanism of mitochondrial function in the presence of inflammation and dysregulation of autophagic processes in the pathogenesis of RA is still unclear. The aim of our study is to determine mitochondrial function, gene and protein levels of biomolecules related to inflammation (YKL-40) and autophagy (LAMPs) and to search a connection between them in the RA context. Twenty newly diagnosed RA patients and ten healthy individuals were included in the study. Disease severity was assessed by ultrasonography. Conventional clinico-laboratory parameters, immunological markers and protein levels of LAMPs and YKL-40 were examined in plasma. Gene expression analysis for the quantitative measurement of LAMPs and YKL-40 were conducted in white blood cells (WBC). A real-time metabolic analysis was performed to assess mitochondrial function and cell metabolism in peripheral blood mononuclear cells (PBMCs). Increase in spare respiratory capacity in PBMCs of RA patients was detected. Decreased LAMPs plasma protein levels and increased protein levels of YKL-40 in RA patients compared to healthy individuals were measured. No significant differences were found in gene expressions. Correlations between mitochondrial, ultrasonographic and protein levels of the biomarkers related with inflammation and autophagy were established. New data on mitochondrial dysfunction in RA patients and links to inflammation and mitophagy are reported. The relationship between dysregulation of mitophagy and joint diseases deserves to be thoroughly investigated as it would be a promising therapeutic approach.
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Affiliation(s)
- Valentina Mihaylova
- Department of Medical Biology, Medical University, Plovdiv, Bulgaria; Research Institute at Medical University, Plovdiv, Bulgaria.
| | - Rositsa Karalilova
- Department of Propaedeutics of Internal Diseases, Medical University, Plovdiv, Bulgaria; Clinic of Rheumatology, University Hospital "Kaspela", Plovdiv, Bulgaria
| | - Zguro Batalov
- Department of Propaedeutics of Internal Diseases, Medical University, Plovdiv, Bulgaria; Clinic of Rheumatology, University Hospital "Kaspela", Plovdiv, Bulgaria
| | - Maria Kazakova
- Department of Medical Biology, Medical University, Plovdiv, Bulgaria; Research Institute at Medical University, Plovdiv, Bulgaria
| | - Anastas Batalov
- Department of Propaedeutics of Internal Diseases, Medical University, Plovdiv, Bulgaria; Clinic of Rheumatology, University Hospital "Kaspela", Plovdiv, Bulgaria
| | - Victoria Sarafian
- Department of Medical Biology, Medical University, Plovdiv, Bulgaria; Research Institute at Medical University, Plovdiv, Bulgaria
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2
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Saldivia N, Heller G, Zelada D, Whitehair J, Venkat N, Konjeti A, Savitzky R, Samano S, Simchuk D, van Breemen R, Givogri MI, Bongarzone ER. Deficiency of galactosyl-ceramidase in adult oligodendrocytes worsens disease severity during chronic experimental allergic encephalomyelitis. Mol Ther 2024:S1525-0016(24)00425-8. [PMID: 38937968 DOI: 10.1016/j.ymthe.2024.06.035] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 04/24/2024] [Accepted: 06/24/2024] [Indexed: 06/29/2024] Open
Abstract
Galactosyl-ceramidase (GALC) is a ubiquitous lysosomal enzyme crucial for the correct myelination of the mammalian nervous system during early postnatal development. However, the physiological consequence of GALC deficiency in the adult brain remains unknown. In this study, we found that mice with conditional ablation of GALC activity in post-myelinating oligodendrocytes were lethally sensitized when challenged with chronic experimental allergic encephalomyelitis (EAE), in contrast with the non-lethal dysmyelination observed in Galc-ablated mice without the EAE challenge. Mechanistically, we found strong inflammatory demyelination without remyelination and an impaired fusion of lysosomes and autophagosomes with accumulation of myelin debris after a transcription factor EB-dependent increase in the lysosomal autophagosome flux. These results indicate that the physiological impact of GALC deficiency is highly influenced by the cell context (oligodendroglial vs. global expression), the presence of inflammation, and the developmental time when it happens (pre-myelination vs. post-myelination). We conclude that Galc expression in adult oligodendrocytes is crucial for the maintenance of adult central myelin and to decrease vulnerability to additional demyelinating insults.
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Affiliation(s)
- Natalia Saldivia
- Department of Anatomy and Cell Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
| | - Gregory Heller
- Department of Anatomy and Cell Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Diego Zelada
- Department of Anatomy and Cell Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Jason Whitehair
- Department of Anatomy and Cell Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Nikhil Venkat
- Department of Anatomy and Cell Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Ashna Konjeti
- Department of Anatomy and Cell Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Reina Savitzky
- Department of Anatomy and Cell Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Shayla Samano
- Department of Anatomy and Cell Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Daniel Simchuk
- Linus Pauling Institute, Oregon State University, Corvallis, OR 97331, USA
| | | | - Maria I Givogri
- Department of Anatomy and Cell Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA
| | - Ernesto R Bongarzone
- Department of Anatomy and Cell Biology, College of Medicine, University of Illinois at Chicago, Chicago, IL, USA.
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3
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Kulsange SE, Sharma M, Sonawane B, Jaiswal MR, Kulkarni MJ, Santhakumari B. SWATH-MS reveals that bisphenol A and its analogs regulate pathways leading to disruption in insulin signaling and fatty acid metabolism. Food Chem Toxicol 2024; 188:114667. [PMID: 38653447 DOI: 10.1016/j.fct.2024.114667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2024] [Revised: 03/24/2024] [Accepted: 04/14/2024] [Indexed: 04/25/2024]
Abstract
Bisphenol A (BPA) is an endocrine-disrupting chemical (EDC), associated with obesity and insulin resistance. The FDA prohibited the use of BPA-based polycarbonate resins in infant formula packaging; thus, its analogs, viz. Bisphenol S (BPS) and Bisphenol F (BPF) were considered alternatives in epoxy resins, plastics, and food cans. As these analogs might evoke a similar response, we investigated the role of Bisphenols (BPA, BPF, and BPS), on insulin signaling in CHO-HIRc-myc-GLUT4eGFP cells at environmentally relevant concentrations of 2 nM and 200 nM. Insulin signaling demonstrated that Bisphenols reduced phosphorylation of IR and AKT2, GLUT4 translocation, and glucose uptake. This was accompanied by increased oxidative stress. Furthermore, SWATH-MS-based proteomics of 3T3-L1 cells demonstrated that Bisphenol-treated cells regulate proteins in insulin resistance, adipogenesis, and fatty acid metabolism pathways differently. All three Bisphenols induced differentially expressed proteins enriched similar pathways, although their abundance differed for each Bisphenol. This might be due to their varying toxicity level, structural differences, and estrogen-mimetic activity. This study has important implications in addressing health concerns related to EDCs. Given that the analogs of BPA are considered alternatives to BPA, the findings of this study suggest they are equally potent in altering fatty acid metabolism and inducing insulin resistance.
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Affiliation(s)
- Shabda E Kulsange
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Monika Sharma
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Babasaheb Sonawane
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Meera R Jaiswal
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Mahesh J Kulkarni
- Biochemical Sciences Division, CSIR-National Chemical Laboratory, Pune 411008, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India.
| | - B Santhakumari
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India; Centre for Material Characterization, CSIR-National Chemical Laboratory, Pune 411008, India.
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4
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Lee D, Lee PCW, Hong JH. UBA6 Inhibition Accelerates Lysosomal TRPML1 Depletion and Exosomal Secretion in Lung Cancer Cells. Int J Mol Sci 2024; 25:2843. [PMID: 38474091 PMCID: PMC10932338 DOI: 10.3390/ijms25052843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 02/25/2024] [Accepted: 02/28/2024] [Indexed: 03/14/2024] Open
Abstract
Ubiquitin-like modifier-activating enzyme 6 (UBA6) is a member of the E1 enzyme family, which initiates the ubiquitin-proteasome system (UPS). The UPS plays critical roles not only in protein degradation but also in various cellular functions, including neuronal signaling, myocardial remodeling, immune cell differentiation, and cancer development. However, the specific role of UBA6 in cellular functions is not fully elucidated in comparison with the roles of the UPS. It has been known that the E1 enzyme is associated with the motility of cancer cells. In this study, we verified the physiological roles of UBA6 in lung cancer cells through gene-silencing siRNA targeting UBA6 (siUBA6). The siUBA6 treatment attenuated the migration of H1975 cells, along with a decrease in lysosomal Ca2+ release. While autophagosomal proteins remained unchanged, lysosomal proteins, including TRPML1 and TPC2, were decreased in siUBA6-transfected cells. Moreover, siUBA6 induced the production of multivesicular bodies (MVBs), accompanied by an increase in MVB markers in siUBA6-transfected H1975 cells. Additionally, the expression of the exosomal marker CD63 and extracellular vesicles was increased by siUBA6 treatment. Our findings suggest that knock-down of UBA6 induces lysosomal TRPML1 depletion and inhibits endosomal trafficking to lysosome, and subsequently, leads to the accumulation of MVBs and enhanced exosomal secretion in lung cancer cells.
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Affiliation(s)
- Dongun Lee
- Department of Health Sciences and Technology, Lee Gil Ya Cancer and Diabetes Institute, GAIHST, Gachon University, 155 Getbeolro, Yeonsu-gu, Incheon 21999, Republic of Korea;
| | - Peter Chang-Whan Lee
- Department of Biomedical Sciences, University of Ulsan College of Medicine, Asan Medical Center, Seoul 05505, Republic of Korea;
| | - Jeong Hee Hong
- Department of Health Sciences and Technology, Lee Gil Ya Cancer and Diabetes Institute, GAIHST, Gachon University, 155 Getbeolro, Yeonsu-gu, Incheon 21999, Republic of Korea;
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5
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Bai I, Keyser C, Zhang Z, Rosolia B, Hwang JY, Zukin RS, Yan J. Epigenetic regulation of autophagy in neuroinflammation and synaptic plasticity. Front Immunol 2024; 15:1322842. [PMID: 38455054 PMCID: PMC10918468 DOI: 10.3389/fimmu.2024.1322842] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/02/2024] [Indexed: 03/09/2024] Open
Abstract
Autophagy is a conserved cellular mechanism that enables the degradation and recycling of cellular organelles and proteins via the lysosomal pathway. In neurodevelopment and maintenance of neuronal homeostasis, autophagy is required to regulate presynaptic functions, synapse remodeling, and synaptic plasticity. Deficiency of autophagy has been shown to underlie the synaptic and behavioral deficits of many neurological diseases such as autism, psychiatric diseases, and neurodegenerative disorders. Recent evidence reveals that dysregulated autophagy plays an important role in the initiation and progression of neuroinflammation, a common pathological feature in many neurological disorders leading to defective synaptic morphology and plasticity. In this review, we will discuss the regulation of autophagy and its effects on synapses and neuroinflammation, with emphasis on how autophagy is regulated by epigenetic mechanisms under healthy and diseased conditions.
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Affiliation(s)
- Isaac Bai
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, OH, United States
| | - Cameron Keyser
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, OH, United States
| | - Ziyan Zhang
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, OH, United States
| | - Breandan Rosolia
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, OH, United States
| | - Jee-Yeon Hwang
- Department of Pharmacology and Neuroscience, Creighton University School of Medicine, Omaha, NE, United States
| | - R. Suzanne Zukin
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, New York, NY, United States
| | - Jingqi Yan
- Center for Gene Regulation in Health and Disease, Department of Biological, Geological, and Environmental Sciences, Cleveland State University, Cleveland, OH, United States
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6
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Handy J, Macintosh GC, Jenny A. Ups and downs of lysosomal pH: conflicting roles of LAMP proteins? Autophagy 2024; 20:437-440. [PMID: 37960894 PMCID: PMC10813643 DOI: 10.1080/15548627.2023.2274253] [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: 08/23/2023] [Accepted: 10/17/2023] [Indexed: 11/15/2023] Open
Abstract
The acidic pH of lysosomes is critical for catabolism in eukaryotic cells and is altered in neurodegenerative disease including Alzheimer and Parkinson. Recent reports using Drosophila and mammalian cell culture systems have identified novel and, at first sight, conflicting roles for the lysosomal associated membrane proteins (LAMPs) in the regulation of the endolysosomal system.Abbreviation: AD: Alzheimer disease; LAMP: lysosomal associated membrane protein; LTR: LysoTracker; PD: Parkinson disease; TMEM175: transmembrane protein 175; V-ATPase: vacuolar-type H+-translocating ATPase.
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Affiliation(s)
- Jonathan Handy
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, New York, NY, USA
| | - Gustavo C. Macintosh
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, USA
| | - Andreas Jenny
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, New York, NY, USA
- Department of Genetics, Albert Einstein College of Medicine, New York, NY, USA
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7
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Poole B, Oshins R, Huo Z, Aranyos A, West J, Duarte S, Clark VC, Beduschi T, Zarrinpar A, Brantly M, Khodayari N. Sirtuin3 promotes the degradation of hepatic Z alpha-1 antitrypsin through lipophagy. Hepatol Commun 2024; 8:e0370. [PMID: 38285890 PMCID: PMC10830086 DOI: 10.1097/hc9.0000000000000370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/13/2023] [Accepted: 12/01/2023] [Indexed: 01/31/2024] Open
Abstract
BACKGROUND Alpha-1 antitrypsin deficiency (AATD) is a genetic disease caused by misfolding and accumulation of mutant alpha-1 antitrypsin (ZAAT) in the endoplasmic reticulum of hepatocytes. Hepatic ZAAT aggregates acquire a toxic gain-of-function that impacts the endoplasmic reticulum which is theorized to cause liver disease in individuals with AATD who present asymptomatic until late-stage cirrhosis. Currently, there is no treatment for AATD-mediated liver disease except liver transplantation. In our study of mitochondrial RNA, we identified that Sirtuin3 (SIRT3) plays a role in the hepatic phenotype of AATD. METHODS Utilizing RNA and protein analysis in an in vitro AATD model, we investigated the role of SIRT3 in the pathophysiology of AATD-mediated liver disease while also characterizing our novel, transgenic AATD mouse model. RESULTS We show lower expression of SIRT3 in ZAAT-expressing hepatocytes. In contrast, the overexpression of SIRT3 increases hepatic ZAAT degradation. ZAAT degradation mediated by SIRT3 appeared independent of proteasomal degradation and regular autophagy pathways. We observed that ZAAT-expressing hepatocytes have aberrant accumulation of lipid droplets, with ZAAT polymers localizing on the lipid droplet surface in a direct interaction with Perilipin2, which coats intracellular lipid droplets. SIRT3 overexpression also induced the degradation of lipid droplets in ZAAT-expressing hepatocytes. We observed that SIRT3 overexpression induces lipophagy by enhancing the interaction of Perilipin2 with HSC70. ZAAT polymers then degrade as a consequence of the mobilization of lipids through this process. CONCLUSIONS In this context, SIRT3 activation may eliminate the hepatic toxic gain-of-function associated with the polymerization of ZAAT, providing a rationale for a potential novel therapeutic approach to the treatment of AATD-mediated liver disease.
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Affiliation(s)
- Brittney Poole
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, USA
| | - Regina Oshins
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, USA
| | - Zhiguang Huo
- Department of Biostatistics, College of Public Health, University of Florida, Gainesville, Florida, USA
| | - Alek Aranyos
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, USA
| | - Jesse West
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, USA
| | - Sergio Duarte
- Department of Surgery, Division of Transplantation and Hepatobiliary Surgery, University of Florida, Gainesville, Florida, USA
| | - Virginia C. Clark
- Department of Medicine, Division of Gastroenterology, Hepatology, and Nutrition, University of Florida, Gainesville, Florida, USA
| | - Thiago Beduschi
- Department of Surgery, Division of Transplantation and Hepatobiliary Surgery, University of Florida, Gainesville, Florida, USA
| | - Ali Zarrinpar
- Department of Surgery, Division of Transplantation and Hepatobiliary Surgery, University of Florida, Gainesville, Florida, USA
| | - Mark Brantly
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, USA
| | - Nazli Khodayari
- Department of Medicine, Division of Pulmonary, Critical Care and Sleep Medicine, University of Florida, Gainesville, Florida, USA
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8
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Lu H, Zhou J, Li X, Han X, Ma S, Feng C. MiR-526b-3p enhances sensitivity of head and neck squamous cell carcinoma cells to radiotherapy via suppressing exosomal LAMP3-mediated autophagy. Autoimmunity 2023; 56:2259125. [PMID: 37740656 DOI: 10.1080/08916934.2023.2259125] [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: 10/24/2022] [Accepted: 09/10/2023] [Indexed: 09/24/2023]
Abstract
Lysosomal associated membrane protein 3 (LAMP3) has been reported to be a tumour promoter in multiple cancer types by modulating tumour cell autophagy. However, the potential mechanism of LAMP3 in radio-resistance of head and neck squamous cell carcinoma (HNSCC) remains unknown. Therefore, our current study aims to detect the impacts of LAMP3 on the resistance of HNSCC cells to radiotherapy and meanwhile explore its functional mechanism. Through RT-Qpcr examination, LAMP3 expression was identified to be expressed at a significantly high level in irradiation-resistant HNSCC cell lines compared with irradiation-sensitive HNSCC cell lines. Functional assays including CCK-8, colony formation and Transwell assays demonstrated that LAMP3 enhanced the radio-resistance through inducing autophagy to promote HNSCC cell growth. Furthermore, irradiation-resistant HNSCC cells could transfer exosomal LAMP3 to elevate LAMP3 expression in irradiation-sensitive HNSCC cells. Mechanistically, microRNA (miRNA) miR-526b-3p could inhibit LAMP3 expression so as to strengthen sensitivity of HNSCC cells to radiotherapy. In a word, exosomal LAMP3 expression promoted radioresistance of HNSCC cells via inducing autophagy, while this effect could be suppressed by miR-526b-3p in a targeted manner.
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Affiliation(s)
- Huixiang Lu
- Heavy Ion Radiotherapy Department, Wuwei Cancer Hospital & Institute, Wuwei Academy of Medical Sciences, Wuwei, Gansu, China
| | - Junnian Zhou
- Head, Neck and Maxillofacial Surgery Department, Wuwei Cancer Hospital, Wuwei, Gansu, China
| | - Xiaojun Li
- Heavy Ion Radiotherapy Department, Wuwei Cancer Hospital & Institute, Wuwei Academy of Medical Sciences, Wuwei, Gansu, China
| | - Xiaoqin Han
- Head, Neck and Maxillofacial Surgery Department, Wuwei Cancer Hospital, Wuwei, Gansu, China
| | - Shuping Ma
- Heavy Ion Radiotherapy Department, Wuwei Cancer Hospital & Institute, Wuwei Academy of Medical Sciences, Wuwei, Gansu, China
| | - Chunlan Feng
- Heavy Ion Radiotherapy Department, Wuwei Cancer Hospital & Institute, Wuwei Academy of Medical Sciences, Wuwei, Gansu, China
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9
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Terasawa K, Seike T, Sakamoto K, Ohtake K, Terada T, Iwata T, Watabe T, Yokoyama S, Hara‐Yokoyama M. Site-specific photo-crosslinking/cleavage for protein-protein interface identification reveals oligomeric assembly of lysosomal-associated membrane protein type 2A in mammalian cells. Protein Sci 2023; 32:e4823. [PMID: 37906694 PMCID: PMC10659947 DOI: 10.1002/pro.4823] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 10/16/2023] [Accepted: 10/21/2023] [Indexed: 11/02/2023]
Abstract
Genetic code expansion enables site-specific photo-crosslinking by introducing photo-reactive non-canonical amino acids into proteins at defined positions during translation. This technology is widely used for analyzing protein-protein interactions and is applicable in mammalian cells. However, the identification of the crosslinked region still remains challenging. Here, we developed a new method to identify the crosslinked region by pre-installing a site-specific cleavage site, an α-hydroxy acid (Nε -allyloxycarbonyl-α-hydroxyl-l-lysine acid, AllocLys-OH), into the target protein. Alkaline treatment cleaves the crosslinked complex at the position of the α-hydroxy acid residue and thus helps to identify which side of the cleavage site, either closer to the N-terminus or C-terminus, the crosslinked site is located within the target protein. A series of AllocLys-OH introductions narrows down the crosslinked region. By applying this method, we identified the crosslinked regions in lysosomal-associated membrane protein type 2A (LAMP2A), a receptor of chaperone-mediated autophagy, in mammalian cells. The results suggested that at least two interfaces are involved in the homophilic interaction, which requires a trimeric or higher oligomeric assembly of adjacent LAMP2A molecules. Thus, the combination of site-specific crosslinking and site-specific cleavage promises to be useful for revealing binding interfaces and protein complex geometries.
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Affiliation(s)
- Kazue Terasawa
- Department of Biochemistry, Graduate School of Medical and Dental SciencesTokyo Medical and Dental University (TMDU)TokyoJapan
- LiberoThera Co., Ltd.Chuo‐kuJapan
| | - Tatsuro Seike
- Department of Periodontology, Graduate School of Medical and Dental SciencesTokyo Medical and Dental University (TMDU)TokyoJapan
| | - Kensaku Sakamoto
- Laboratory for Nonnatural Amino Acid TechnologyRIKEN Center for Biosystems Dynamics ResearchYokohamaJapan
- Department of Drug Target Protein ResearchShinshu University School of MedicineNaganoJapan
| | - Kazumasa Ohtake
- Laboratory for Nonnatural Amino Acid TechnologyRIKEN Center for Biosystems Dynamics ResearchYokohamaJapan
- Department of Electrical Engineering and BioscienceWaseda UniversityTokyoJapan
| | - Tohru Terada
- Department of Biotechnology, Graduate School of Agricultural and Life SciencesThe University of TokyoTokyoJapan
| | - Takanori Iwata
- Department of Periodontology, Graduate School of Medical and Dental SciencesTokyo Medical and Dental University (TMDU)TokyoJapan
| | - Tetsuro Watabe
- Department of Biochemistry, Graduate School of Medical and Dental SciencesTokyo Medical and Dental University (TMDU)TokyoJapan
| | - Shigeyuki Yokoyama
- Department of Drug Target Protein ResearchShinshu University School of MedicineNaganoJapan
- Laboratory for Protein Function and Structural BiologyRIKEN Cluster for Science, Technology and Innovation HubYokohamaJapan
- Department of Structural Biology and Biochemistry, Graduate School of Medical and Dental SciencesTokyo Medical and Dental University (TMDU)TokyoJapan
| | - Miki Hara‐Yokoyama
- Department of Biochemistry, Graduate School of Medical and Dental SciencesTokyo Medical and Dental University (TMDU)TokyoJapan
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10
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Jo DH, Lee SH, Jeon M, Cho CS, Kim DE, Kim H, Kim JH. Activation of Lysosomal Function Ameliorates Amyloid-β-Induced Tight Junction Disruption in the Retinal Pigment Epithelium. Mol Cells 2023; 46:675-687. [PMID: 37968982 PMCID: PMC10654459 DOI: 10.14348/molcells.2023.0056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2023] [Revised: 10/16/2023] [Accepted: 10/17/2023] [Indexed: 11/17/2023] Open
Abstract
Accumulation of pathogenic amyloid-β disrupts the tight junction of retinal pigment epithelium (RPE), one of its senescence-like structural alterations. In the clearance of amyloid-β, the autophagy-lysosome pathway plays the crucial role. In this context, mammalian target of rapamycin (mTOR) inhibits the process of autophagy and lysosomal degradation, acting as a potential therapeutic target for age-associated disorders. However, efficacy of targeting mTOR to treat age-related macular degeneration remains largely elusive. Here, we validated the therapeutic efficacy of the mTOR inhibitors, Torin and PP242, in clearing amyloid-β by inducing the autophagy-lysosome pathway in a mouse model with pathogenic amyloid-β with tight junction disruption of RPE, which is evident in dry age-related macular degeneration. High concentration of amyloid-β oligomers induced autophagy-lysosome pathway impairment accompanied by the accumulation of p62 and decreased lysosomal activity in RPE cells. However, Torin and PP242 treatment restored the lysosomal activity via activation of LAMP2 and facilitated the clearance of amyloid-β in vitro and in vivo. Furthermore, clearance of amyloid-β by Torin and PP242 ameliorated the tight junction disruption of RPE in vivo. Overall, our findings suggest mTOR inhibition as a new therapeutic strategy for the restoration of tight junctions in age-related macular degeneration.
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Affiliation(s)
- Dong Hyun Jo
- Department of Anatomy and Cell Biology, Seoul National University College of Medicine, Seoul 03080, Korea
| | - Su Hyun Lee
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul 02841, Korea
| | - Minsol Jeon
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul 02841, Korea
- BK21 Graduate Program, Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Korea
| | - Chang Sik Cho
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Biomedical Research Institute, Seoul National University Hospital, Seoul 03080, Korea
| | - Da-Eun Kim
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul 02841, Korea
- BK21 Graduate Program, Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Korea
| | - Hyunkyung Kim
- Department of Biochemistry and Molecular Biology, Korea University College of Medicine, Seoul 02841, Korea
- BK21 Graduate Program, Department of Biomedical Sciences, Korea University College of Medicine, Seoul 02841, Korea
| | - Jeong Hun Kim
- Fight against Angiogenesis-Related Blindness (FARB) Laboratory, Biomedical Research Institute, Seoul National University Hospital, Seoul 03080, Korea
- Department of Biomedical Sciences & Ophthalmology, Seoul National University College of Medicine, Seoul 02841, Korea
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11
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Litwiniuk A, Juszczak GR, Stankiewicz AM, Urbańska K. The role of glial autophagy in Alzheimer's disease. Mol Psychiatry 2023; 28:4528-4539. [PMID: 37679471 DOI: 10.1038/s41380-023-02242-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 08/21/2023] [Accepted: 08/25/2023] [Indexed: 09/09/2023]
Abstract
Although Alzheimer's disease is the most pervasive neurodegenerative disorder, the mechanism underlying its development is still not precisely understood. Available data indicate that pathophysiology of this disease may involve impaired autophagy in glial cells. The dysfunction is manifested as reduced ability of astrocytes and microglia to clear abnormal protein aggregates. Consequently, excessive accumulation of amyloid beta plaques and neurofibrillary tangles activates microglia and astrocytes leading to decreased number of mature myelinated oligodendrocytes and death of neurons. These pathologic effects of autophagy dysfunction can be rescued by pharmacological activation of autophagy. Therefore, a deeper understanding of the molecular mechanisms involved in autophagy dysfunction in glial cells in Alzheimer's disease may lead to the development of new therapeutic strategies. However, such strategies need to take into consideration differences in regulation of autophagy in different types of neuroglia.
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Affiliation(s)
- Anna Litwiniuk
- Department of Neuroendocrinology, Centre of Postgraduate Medical Education, Warsaw, Mazovia, Poland
| | - Grzegorz Roman Juszczak
- Department of Animal Behavior and Welfare, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Jastrzębiec, Mazovia, Poland
| | - Adrian Mateusz Stankiewicz
- Department of Molecular Biology, Institute of Genetics and Animal Biotechnology, Polish Academy of Sciences, Jastrzębiec, Mazovia, Poland.
| | - Kaja Urbańska
- Department of Morphological Sciences, Faculty of Veterinary Medicine, Warsaw University of Life Sciences, Warsaw, Mazovia, Poland.
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12
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Sun D, Li H, Du Y, Chen Y, Yao L, Wang L. Metformin modulates mitochondrial autophagy in renal tubular epithelial injury induced by high glucose via the Keap1/Nrf2 pathway. Mol Cell Biochem 2023:10.1007/s11010-023-04843-8. [PMID: 37831352 DOI: 10.1007/s11010-023-04843-8] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Accepted: 08/24/2023] [Indexed: 10/14/2023]
Abstract
The current study aimed to explore the role and underpinning molecular mechanisms of metformin in renal cellular injury induced by high glucose levels. Male C57BL/KsJ (db/db) and (db/m +) mice were utilized in this study. The experimental group was administered 1 mg/mL of metformin through drinking water. Renal tissues were harvested for hematoxylin and eosin (HE) staining, superoxide dismutase (SOD) activity detection, biochemical indices analysis, Western blotting, and qRT-PCR. HK-2 cells were utilized for Nrf2 siRNA transfection and to establish a high level of glucose-induced cell models. Metformin was administered at a concentration of 1 mmol/L in the experimental group. Cellular viability was assessed using CCK-8, whereas acridine orange (AO) staining and LC3-mitotracker co-localization staining were employed to evaluate autophagy. The expression of Nrf2, P21, LC3, PTEN-induced putative kinase 1 (PINK1), translocase of outer mitochondrial membrane 20 (TOMM20), and Kelch-like ECH-associated protein 1 (Keap1) were determined through Western blotting and qRT-PCR. Metformin mitigated renal tissue inflammatory damage in diabetic mice, as indicated by upregulated expression of Nrf2, PINK1, LC3, and TOMM20, and downregulated expression of Keap1 and P21. High level of glucose treatment in HK-2 cells resulted in decreased autophagy, and reduced expression of Nrf2, PINK1, LC3, and TOMM20 alongside elevated the expression of Keap1 and P21. Notably, metformin treatment partially counteracted these effects. Nrf2 knockdown intensified these phenomena in the high level of glucose-induced model. Protein-protein interaction network analysis indicated that Nrf2 could regulate the majority autophagy-related proteins via Keap1. Metformin modulates mitochondrial autophagy in high glucose-induced renal tubular epithelial senescence via the Keap1/Nrf2 pathway.
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Affiliation(s)
- Da Sun
- Department of Nephrology, The First Hospital of China Medical University, No. 155 Nanjing Bei Street, Heping District, Shenyang, 110001, China
| | - Huimin Li
- Department of Nephrology, The Fourth Hospital of China Medical University, Shenyang, 110000, China
| | - Yinke Du
- Department of Nephrology, The First Hospital of China Medical University, No. 155 Nanjing Bei Street, Heping District, Shenyang, 110001, China
| | - Ying Chen
- Department of Nephrology, The First Hospital of China Medical University, No. 155 Nanjing Bei Street, Heping District, Shenyang, 110001, China
| | - Li Yao
- Department of Nephrology, The First Hospital of China Medical University, No. 155 Nanjing Bei Street, Heping District, Shenyang, 110001, China
| | - Lining Wang
- Department of Nephrology, The First Hospital of China Medical University, No. 155 Nanjing Bei Street, Heping District, Shenyang, 110001, China.
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13
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Zhu S, Deen MC, Zhu Y, Gilormini PA, Chen X, Davis OB, Chin MY, Henry AG, Vocadlo DJ. A Fixable Fluorescence-Quenched Substrate for Quantitation of Lysosomal Glucocerebrosidase Activity in Both Live and Fixed Cells. Angew Chem Int Ed Engl 2023; 62:e202309306. [PMID: 37582679 DOI: 10.1002/anie.202309306] [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: 06/30/2023] [Revised: 08/10/2023] [Accepted: 08/15/2023] [Indexed: 08/17/2023]
Abstract
Fluorogenic substrates are emerging tools that enable studying enzymatic processes within their native cellular environments. However, fluorogenic substrates that function within live cells are generally incompatible with cellular fixation, preventing their tandem application with fundamental cell biology methods such as immunocytochemistry. Here we report a simple approach to enable the chemical fixation of a dark-to-light substrate, LysoFix-GBA, which enables quantification of glucocerebrosidase (GCase) activity in both live and fixed cells. LysoFix-GBA enables measuring responses to both chemical and genetic perturbations to lysosomal GCase activity. Further, LysoFix-GBA permits simple multiplexed co-localization studies of GCase activity with subcellular protein markers. This tool will aid studying the role of GCase activity in Parkinson's Disease, creating new therapeutic approaches targeting the GCase pathway. This approach also lays the foundation for an approach to create fixable substrates for other lysosomal enzymes.
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Affiliation(s)
- Sha Zhu
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Matthew C Deen
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Yanping Zhu
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Pierre-André Gilormini
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Xi Chen
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
| | - Oliver B Davis
- Denali Therapeutics Inc., 161 Oyster Point Blvd., South San Francisco, CA, 94080, USA
| | - Marcus Y Chin
- Denali Therapeutics Inc., 161 Oyster Point Blvd., South San Francisco, CA, 94080, USA
| | - Anastasia G Henry
- Denali Therapeutics Inc., 161 Oyster Point Blvd., South San Francisco, CA, 94080, USA
| | - David J Vocadlo
- Department of Chemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, British Columbia, V5A 1S6, Canada
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14
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Gomez-Mariano G, Perez-Luz S, Ramos-Del Saz S, Matamala N, Hernandez-SanMiguel E, Fernandez-Prieto M, Gil-Martin S, Justo I, Marcacuzco A, Martinez-Delgado B. Acid Sphingomyelinase Deficiency Type B Patient-Derived Liver Organoids Reveals Altered Lysosomal Gene Expression and Lipid Homeostasis. Int J Mol Sci 2023; 24:12645. [PMID: 37628828 PMCID: PMC10454326 DOI: 10.3390/ijms241612645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/03/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
Acid sphingomyelinase deficiency (ASMD) or Niemann-Pick disease type A (NPA), type B (NPB) and type A/B (NPA/B), is a rare lysosomal storage disease characterized by progressive accumulation of sphingomyelin (SM) in the liver, lungs, bone marrow and, in severe cases, neurons. A disease model was established by generating liver organoids from a NPB patient carrying the p.Arg610del variant in the SMPD1 gene. Liver organoids were characterized by transcriptomic and lipidomic analysis. We observed altered lipid homeostasis in the patient-derived organoids showing the predictable increase in sphingomyelin (SM), together with cholesterol esters (CE) and triacylglycerides (TAG), and a reduction in phosphatidylcholine (PC) and cardiolipins (CL). Analysis of lysosomal gene expression pointed to 24 downregulated genes, including SMPD1, and 26 upregulated genes that reflect the lysosomal stress typical of the disease. Altered genes revealed reduced expression of enzymes that could be involved in the accumulation in the hepatocytes of sphyngoglycolipids and glycoproteins, as well as upregulated genes coding for different glycosidases and cathepsins. Lipidic and transcriptome changes support the use of hepatic organoids as ideal models for ASMD investigation.
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Affiliation(s)
- Gema Gomez-Mariano
- Molecular Genetics and Genetic Diagnostic Units, Institute of Rare Diseases Research (IIER), Spanish National Institute of Health Carlos III (ISCIII), 28220 Madrid, Spain; (S.P.-L.); (S.R.-D.S.); (N.M.); (E.H.-S.); (M.F.-P.); (S.G.-M.); (B.M.-D.)
| | - Sara Perez-Luz
- Molecular Genetics and Genetic Diagnostic Units, Institute of Rare Diseases Research (IIER), Spanish National Institute of Health Carlos III (ISCIII), 28220 Madrid, Spain; (S.P.-L.); (S.R.-D.S.); (N.M.); (E.H.-S.); (M.F.-P.); (S.G.-M.); (B.M.-D.)
| | - Sheila Ramos-Del Saz
- Molecular Genetics and Genetic Diagnostic Units, Institute of Rare Diseases Research (IIER), Spanish National Institute of Health Carlos III (ISCIII), 28220 Madrid, Spain; (S.P.-L.); (S.R.-D.S.); (N.M.); (E.H.-S.); (M.F.-P.); (S.G.-M.); (B.M.-D.)
| | - Nerea Matamala
- Molecular Genetics and Genetic Diagnostic Units, Institute of Rare Diseases Research (IIER), Spanish National Institute of Health Carlos III (ISCIII), 28220 Madrid, Spain; (S.P.-L.); (S.R.-D.S.); (N.M.); (E.H.-S.); (M.F.-P.); (S.G.-M.); (B.M.-D.)
| | - Esther Hernandez-SanMiguel
- Molecular Genetics and Genetic Diagnostic Units, Institute of Rare Diseases Research (IIER), Spanish National Institute of Health Carlos III (ISCIII), 28220 Madrid, Spain; (S.P.-L.); (S.R.-D.S.); (N.M.); (E.H.-S.); (M.F.-P.); (S.G.-M.); (B.M.-D.)
| | - Marta Fernandez-Prieto
- Molecular Genetics and Genetic Diagnostic Units, Institute of Rare Diseases Research (IIER), Spanish National Institute of Health Carlos III (ISCIII), 28220 Madrid, Spain; (S.P.-L.); (S.R.-D.S.); (N.M.); (E.H.-S.); (M.F.-P.); (S.G.-M.); (B.M.-D.)
| | - Sara Gil-Martin
- Molecular Genetics and Genetic Diagnostic Units, Institute of Rare Diseases Research (IIER), Spanish National Institute of Health Carlos III (ISCIII), 28220 Madrid, Spain; (S.P.-L.); (S.R.-D.S.); (N.M.); (E.H.-S.); (M.F.-P.); (S.G.-M.); (B.M.-D.)
- CIBER de Enfermedades Raras, CIBERER U758, 28029 Madrid, Spain
| | - Iago Justo
- General and Digestive Surgery Department, Hospital 12 de Octubre, 28041 Madrid, Spain; (I.J.); (A.M.)
| | - Alberto Marcacuzco
- General and Digestive Surgery Department, Hospital 12 de Octubre, 28041 Madrid, Spain; (I.J.); (A.M.)
| | - Beatriz Martinez-Delgado
- Molecular Genetics and Genetic Diagnostic Units, Institute of Rare Diseases Research (IIER), Spanish National Institute of Health Carlos III (ISCIII), 28220 Madrid, Spain; (S.P.-L.); (S.R.-D.S.); (N.M.); (E.H.-S.); (M.F.-P.); (S.G.-M.); (B.M.-D.)
- CIBER de Enfermedades Raras, CIBERER U758, 28029 Madrid, Spain
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15
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Javed R, Jain A, Duque T, Hendrix E, Paddar MA, Khan S, Claude‐Taupin A, Jia J, Allers L, Wang F, Mudd M, Timmins G, Lidke K, Rusten TE, Akepati PR, He Y, Reggiori F, Eskelinen E, Deretic V. Mammalian ATG8 proteins maintain autophagosomal membrane integrity through ESCRTs. EMBO J 2023; 42:e112845. [PMID: 37272163 PMCID: PMC10350836 DOI: 10.15252/embj.2022112845] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Revised: 04/28/2023] [Accepted: 05/08/2023] [Indexed: 06/06/2023] Open
Abstract
The canonical autophagy pathway in mammalian cells sequesters diverse cytoplasmic cargo within the double membrane autophagosomes that eventually convert into degradative compartments via fusion with endolysosomal intermediates. Here, we report that autophagosomal membranes show permeability in cells lacking principal ATG8 proteins (mATG8s) and are unable to mature into autolysosomes. Using a combination of methods including a novel in vitro assay to measure membrane sealing, we uncovered a previously unappreciated function of mATG8s to maintain autophagosomal membranes in a sealed state. The mATG8 proteins GABARAP and LC3A bind to key ESCRT-I components contributing, along with other ESCRTs, to the integrity and imperviousness of autophagic membranes. Autophagic organelles in cells lacking mATG8s are permeant, are arrested as amphisomes, and do not progress to functional autolysosomes. Thus, autophagosomal organelles need to be maintained in a sealed state in order to become lytic autolysosomes.
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Affiliation(s)
- Ruheena Javed
- Department of Molecular Genetics and MicrobiologyUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
- Autophagy, Inflammation and Metabolism Center of Biomedical Research ExcellenceUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
| | - Ashish Jain
- Faculty of MedicineUniversity of OsloOsloNorway
| | - Thabata Duque
- Department of Molecular Genetics and MicrobiologyUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
- Autophagy, Inflammation and Metabolism Center of Biomedical Research ExcellenceUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
| | - Emily Hendrix
- Department of Chemistry & Chemical BiologyThe University of New MexicoAlbuquerqueNMUSA
| | - Masroor Ahmad Paddar
- Department of Molecular Genetics and MicrobiologyUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
- Autophagy, Inflammation and Metabolism Center of Biomedical Research ExcellenceUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
| | - Sajjad Khan
- Department of Physics and AstronomyThe University of New MexicoAlbuquerqueNMUSA
| | - Aurore Claude‐Taupin
- Autophagy, Inflammation and Metabolism Center of Biomedical Research ExcellenceUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
| | - Jingyue Jia
- Department of Molecular Genetics and MicrobiologyUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
- Autophagy, Inflammation and Metabolism Center of Biomedical Research ExcellenceUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
| | - Lee Allers
- Department of Molecular Genetics and MicrobiologyUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
- Autophagy, Inflammation and Metabolism Center of Biomedical Research ExcellenceUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
| | - Fulong Wang
- Department of Molecular Genetics and MicrobiologyUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
- Autophagy, Inflammation and Metabolism Center of Biomedical Research ExcellenceUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
| | - Michal Mudd
- Department of Molecular Genetics and MicrobiologyUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
- Autophagy, Inflammation and Metabolism Center of Biomedical Research ExcellenceUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
| | - Graham Timmins
- Autophagy, Inflammation and Metabolism Center of Biomedical Research ExcellenceUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
| | - Keith Lidke
- Department of Physics and AstronomyThe University of New MexicoAlbuquerqueNMUSA
| | | | - Prithvi Reddy Akepati
- Division of Gastroenterology and Hepatology, Department of Internal MedicineUniversity of New MexicoAlbuquerqueNMUSA
| | - Yi He
- Department of Chemistry & Chemical BiologyThe University of New MexicoAlbuquerqueNMUSA
| | - Fulvio Reggiori
- Department of BiomedicineAarhus UniversityAarhusDenmark
- Aarhus Institute for Advanced Studies (AIAS)Aarhus UniversityAarhusDenmark
| | | | - Vojo Deretic
- Department of Molecular Genetics and MicrobiologyUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
- Autophagy, Inflammation and Metabolism Center of Biomedical Research ExcellenceUniversity of New Mexico Health Sciences CenterAlbuquerqueNMUSA
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16
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Zhou Y, Huang X, Yu H, Shi H, Chen M, Song J, Tang W, Teng F, Li C, Yi L, Zhu X, Wang N, Wei Y, Wuniqiemu T, Dong J. TMT-based quantitative proteomics revealed protective efficacy of Icariside II against airway inflammation and remodeling via inhibiting LAMP2, CTSD and CTSS expression in OVA-induced chronic asthma mice. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2023; 118:154941. [PMID: 37451150 DOI: 10.1016/j.phymed.2023.154941] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/11/2023] [Accepted: 06/20/2023] [Indexed: 07/18/2023]
Abstract
BACKGROUND Asthma is a chronic inflammatory disorder in airways with typical pathologic features of airflow limitation, airway inflammation and remodeling. Icariside II (IS), derived from herbal medicine Herba Epimedii, exerts an anti-inflammatory property. However, underlying mechanisms with specifically targeted molecular expression by IS in asthma have not been fully understood, and whether IS could inhibit remodeling and EMT still remains unclear. PURPOSE The study aimed to clarify therapeutic efficacy of IS for attenuating airway inflammation and remodeling in asthma, and illustrate IS-regulated specific pathway and target proteins through TMT-based quantitative proteomics. STUDY DESIGN AND METHODS Murine model of chronic asthma was constructed with ovalbumin (OVA) sensitization and then challenge for 8 weeks. Pulmonary function, leukocyte count in bronchoalveolar lavage fluid (BALF), lung histopathology, inflammatory and fibrotic cytokines, and markers of epithelial-mesenchymal transition (EMT) were evaluated. TMT-based quantitative proteomics were performed on lung tissues to explore IS-regulated proteins. RESULTS IS contributed to alleviative airway hyperresponsiveness (AHR) evidenced by declined RL and increased Cdyn. After IS treatment, we observed a remarked down-regulation of leukocyte count, inflammatory cytokines in BALF, and peribronchial inflammation infiltration. Goblet cell hyperplasia, mucus secretion and peribronchial collagen deposition were attenuated, with the level of TGF-β and MMP-9 in BALF declined. Furthermore, IS induced a rise of Occludin and E-cadherin and a decline of N-cadherin and α-SMA in lung tissues. These results proved the protective property of IS against airway inflammation, remodeling and EMT. To further investigate underlying mechanisms of IS in asthma treatment, TMT-based quantitative proteomics were performed and 102 overlapped DEPs regulated by IS were identified. KEGG enrichment exhibited these DEPs were enriched in lysosome, phagosome and autophagy, in which LAMP2, CTSD and CTSS were common DEPs. WB, q-PCR and IHC results proofed expressional alteration of these proteins. Besides, IS could decrease Beclin-1 and LC3B expression with increasing p62 expression thus inhibiting autophagy. CONCLUSIONS The study demonstrated IS could ameliorate AHR, airway inflammation, remodeling and EMT in OVA-induced chronic asthma mice. Our research was the first to reveal that inhibition of LAMP2, CTSD and CTSS expression in autophagy contributed to the therapeutic efficacy of IS to asthma.
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Affiliation(s)
- Yaolong Zhou
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China
| | - Xi Huang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Hang Yu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Hanlin Shi
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Mengmeng Chen
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Jingrong Song
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Weifeng Tang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Fangzhou Teng
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Congcong Li
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - La Yi
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Xueyi Zhu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Na Wang
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Ying Wei
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China
| | - Tulake Wuniqiemu
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China.
| | - Jingcheng Dong
- Department of Integrative Medicine, Huashan Hospital, Fudan University, 12 Middle Urumqi Road, Shanghai 200040, China; Institutes of Integrative Medicine, Fudan University, Shanghai, China.
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17
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Du T, Song Y, Ray A, Wan X, Yao Y, Samur MK, Shen C, Penailillo J, Sewastianik T, Tai YT, Fulciniti M, Munshi NC, Wu H, Carrasco RD, Chauhan D, Anderson KC. Ubiquitin receptor PSMD4/Rpn10 is a novel therapeutic target in multiple myeloma. Blood 2023; 141:2599-2614. [PMID: 36630605 PMCID: PMC10273170 DOI: 10.1182/blood.2022017897] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 12/12/2022] [Accepted: 12/29/2022] [Indexed: 01/13/2023] Open
Abstract
PSMD4/Rpn10 is a subunit of the 19S proteasome unit that is involved with feeding target proteins into the catalytic machinery of the 26S proteasome. Because proteasome inhibition is a common therapeutic strategy in multiple myeloma (MM), we investigated Rpn10 and found that it is highly expressed in MM cells compared with normal plasma cells. Rpn10 levels inversely correlated with overall survival in patients with MM. Inducible knockout or knockdown of Rpn10 decreased MM cell viability both in vitro and in vivo by triggering the accumulation of polyubiquitinated proteins, cell cycle arrest, and apoptosis associated with the activation of caspases and unfolded protein response-related pathways. Proteomic analysis revealed that inhibiting Rpn10 increased autophagy, antigen presentation, and the activation of CD4+ T and natural killer cells. We developed an in vitro AlphaScreen binding assay for high-throughput screening and identified a novel Rpn10 inhibitor, SB699551 (SB). Treating MM cell lines, leukemic cell lines, and primary cells from patients with MM with SB decreased cell viability without affecting the viability of normal peripheral blood mononuclear cells. SB inhibited the proliferation of MM cells even in the presence of the tumor-promoting bone marrow milieu and overcame proteasome inhibitor (PI) resistance without blocking the 20S proteasome catalytic function or the 19S deubiquitinating activity. Rpn10 blockade by SB triggered MM cell death via similar pathways as the genetic strategy. In MM xenograft models, SB was well tolerated, inhibited tumor growth, and prolonged survival. Our data suggest that inhibiting Rpn10 will enhance cytotoxicity and overcome PI resistance in MM, providing the basis for further optimization studies of Rpn10 inhibitors for clinical application.
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Affiliation(s)
- Ting Du
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
| | - Yan Song
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
| | - Arghya Ray
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
| | - Xueping Wan
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
| | - Yao Yao
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
| | - Mehmet K. Samur
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
- Department of Biostatistics and Computational Biology, Harvard T.H. Chan School of Public Health, Harvard Medical School, Harvard University, Boston, MA
| | - Chen Shen
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Harvard University, Boston, MA
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
| | - Johany Penailillo
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
| | - Tomasz Sewastianik
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
- Department of Experimental Hematology, Institute of Hematology and Transfusion Medicine, Warsaw, Poland
| | - Yu-Tzu Tai
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
| | - Mariateresa Fulciniti
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
| | - Nikhil C. Munshi
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
- VA Boston Healthcare System, Boston, MA
| | - Hao Wu
- Department of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Harvard University, Boston, MA
- Program in Cellular and Molecular Medicine, Boston Children’s Hospital, Boston, MA
| | - Ruben D. Carrasco
- Department of Oncologic Pathology, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
- Department of Pathology, Brigham and Women’s Hospital, Harvard Medical School, Harvard University, Boston, MA
| | - Dharminder Chauhan
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
| | - Kenneth C. Anderson
- Department of Medical Oncology, LeBow Institute for Myeloma Therapeutics and Jerome Lipper Myeloma Center, Dana-Farber Cancer Institute, Harvard Medical School, Harvard University, Boston, MA
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18
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Conte F, Sam JE, Lefeber DJ, Passier R. Metabolic Cardiomyopathies and Cardiac Defects in Inherited Disorders of Carbohydrate Metabolism: A Systematic Review. Int J Mol Sci 2023; 24:ijms24108632. [PMID: 37239976 DOI: 10.3390/ijms24108632] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/25/2023] [Accepted: 05/02/2023] [Indexed: 05/28/2023] Open
Abstract
Heart failure (HF) is a progressive chronic disease that remains a primary cause of death worldwide, affecting over 64 million patients. HF can be caused by cardiomyopathies and congenital cardiac defects with monogenic etiology. The number of genes and monogenic disorders linked to development of cardiac defects is constantly growing and includes inherited metabolic disorders (IMDs). Several IMDs affecting various metabolic pathways have been reported presenting cardiomyopathies and cardiac defects. Considering the pivotal role of sugar metabolism in cardiac tissue, including energy production, nucleic acid synthesis and glycosylation, it is not surprising that an increasing number of IMDs linked to carbohydrate metabolism are described with cardiac manifestations. In this systematic review, we offer a comprehensive overview of IMDs linked to carbohydrate metabolism presenting that present with cardiomyopathies, arrhythmogenic disorders and/or structural cardiac defects. We identified 58 IMDs presenting with cardiac complications: 3 defects of sugar/sugar-linked transporters (GLUT3, GLUT10, THTR1); 2 disorders of the pentose phosphate pathway (G6PDH, TALDO); 9 diseases of glycogen metabolism (GAA, GBE1, GDE, GYG1, GYS1, LAMP2, RBCK1, PRKAG2, G6PT1); 29 congenital disorders of glycosylation (ALG3, ALG6, ALG9, ALG12, ATP6V1A, ATP6V1E1, B3GALTL, B3GAT3, COG1, COG7, DOLK, DPM3, FKRP, FKTN, GMPPB, MPDU1, NPL, PGM1, PIGA, PIGL, PIGN, PIGO, PIGT, PIGV, PMM2, POMT1, POMT2, SRD5A3, XYLT2); 15 carbohydrate-linked lysosomal storage diseases (CTSA, GBA1, GLA, GLB1, HEXB, IDUA, IDS, SGSH, NAGLU, HGSNAT, GNS, GALNS, ARSB, GUSB, ARSK). With this systematic review we aim to raise awareness about the cardiac presentations in carbohydrate-linked IMDs and draw attention to carbohydrate-linked pathogenic mechanisms that may underlie cardiac complications.
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Affiliation(s)
- Federica Conte
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
- Department of Applied Stem Cell Technologies, TechMed Centre, University of Twente, 7522 NH Enschede, The Netherlands
| | - Juda-El Sam
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Dirk J Lefeber
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
- Translational Metabolic Laboratory, Department of Laboratory Medicine, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands
| | - Robert Passier
- Department of Applied Stem Cell Technologies, TechMed Centre, University of Twente, 7522 NH Enschede, The Netherlands
- Department of Anatomy and Embryology, Leiden University Medical Center, 2333 ZA Leiden, The Netherlands
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19
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Zha D, Rayamajhi S, Sipes J, Russo A, Pathak HB, Li K, Sardiu ME, Bantis LE, Mitra A, Puri RV, Trinidad CV, Cain BP, Isenberg BC, Coppeta J, MacLaughlan S, Godwin AK, Burdette JE. Proteomic Profiling of Fallopian Tube-Derived Extracellular Vesicles Using a Microfluidic Tissue-on-Chip System. Bioengineering (Basel) 2023; 10:423. [PMID: 37106610 PMCID: PMC10135590 DOI: 10.3390/bioengineering10040423] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 03/17/2023] [Accepted: 03/23/2023] [Indexed: 03/30/2023] Open
Abstract
The human fallopian tube epithelium (hFTE) is the site of fertilization, early embryo development, and the origin of most high-grade serous ovarian cancers (HGSOCs). Little is known about the content and functions of hFTE-derived small extracellular vesicles (sEVs) due to the limitations of biomaterials and proper culture methods. We have established a microfluidic platform to culture hFTE for EV collection with adequate yield for mass spectrometry-based proteomic profiling, and reported 295 common hFTE sEV proteins for the first time. These proteins are associated with exocytosis, neutrophil degranulation, and wound healing, and some are crucial for fertilization processes. In addition, by correlating sEV protein profiles with hFTE tissue transcripts characterized using GeoMx® Cancer Transcriptome Atlas, spatial transcriptomics analysis revealed cell-type-specific transcripts of hFTE that encode sEVs proteins, among which, FLNA, TUBB, JUP, and FLNC were differentially expressed in secretory cells, the precursor cells for HGSOC. Our study provides insights into the establishment of the baseline proteomic profile of sEVs derived from hFTE tissue, and its correlation with hFTE lineage-specific transcripts, which can be used to evaluate whether the fallopian tube shifts its sEV cargo during ovarian cancer carcinogenesis and the role of sEV proteins in fallopian tube reproductive functions.
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Affiliation(s)
- Didi Zha
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Sagar Rayamajhi
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Jared Sipes
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Angela Russo
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Harsh B. Pathak
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Kailiang Li
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Mihaela E. Sardiu
- Department of Biostatistics and Data Science, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Kansas Institute for Precision Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Leonidas E. Bantis
- Department of Biostatistics and Data Science, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Amrita Mitra
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Rajni V. Puri
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Camille V. Trinidad
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Brian P. Cain
- Charles Stark Draper Laboratory, Cambridge, MA 02139, USA
| | | | | | - Shannon MacLaughlan
- Department of Obstetrics and Gynecology, College of Medicine, University of Illinois at Chicago, Chicago, IL 60607, USA
| | - Andrew K. Godwin
- Department of Pathology and Laboratory Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
- Kansas Institute for Precision Medicine, University of Kansas Medical Center, Kansas City, KS 66160, USA
| | - Joanna E. Burdette
- Department of Pharmaceutical Sciences, College of Pharmacy, University of Illinois at Chicago, Chicago, IL 60607, USA
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20
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Nguyen NM, Meyer D, Meyer L, Chand S, Jagadesan S, Miravite M, Guda C, Yelamanchili SV, Pendyala G. Identification of YWHAH as a Novel Brain-Derived Extracellular Vesicle Marker Post Long-Term Midazolam Exposure during Early Development. Cells 2023; 12:966. [PMID: 36980307 PMCID: PMC10047367 DOI: 10.3390/cells12060966] [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: 01/06/2023] [Revised: 02/10/2023] [Accepted: 03/15/2023] [Indexed: 03/30/2023] Open
Abstract
Recently, the long-term use of sedative agents in the neonatal intensive care unit (NICU) has raised concerns about neurodevelopmental outcomes in exposed neonates. Midazolam (MDZ), a common neonatal sedative in the NICU, has been suggested to increase learning disturbances and cognitive impairment in children. However, molecular mechanisms contributing to such outcomes with long-term MDZ use during the early stages of life remain unclear. In this study, we for the first time elucidate the role of brain-derived extracellular vesicles (BDEVs), including mining the BDEV proteome post long-term MDZ exposure during early development. Employing our previously established rodent model system that mimics the exposure of MDZ in the NICU using an increasing dosage regimen, we isolated BDEVs from postnatal 21-days-old control and MDZ groups using a differential sucrose density gradient. BDEVs from the control and MDZ groups were then characterized using a ZetaView nanoparticle tracking analyzer and transmission electron microscopy analysis. Next, using RT-qPCR, we examined the expression of key ESCRT-related genes involved in EV biogenesis. Lastly, using quantitative mass spectrometry-based proteomics, we mined the BDEV protein cargo that revealed key differentially expressed proteins and associated molecular pathways to be altered post long-term MDZ exposure. Our study characterized the proteome in BDEV cargo from long-term MDZ exposure at early development. Importantly, we identified and validated the expression of YWHAH as a potential target for further characterization of its downstream mechanism and a potential biomarker for the early onset of neurodevelopment and neurodegenerative diseases. Overall, the present study demonstrated long-term exposure to MDZ at early development stages could influence BDEV protein cargo, which potentially impact neural functions and behavior at later stages of development.
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Affiliation(s)
- Nghi M. Nguyen
- Department of Anesthesiology, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
- Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
| | - Daniel Meyer
- Department of Anesthesiology, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
| | - Luke Meyer
- Department of Anesthesiology, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
| | - Subhash Chand
- Department of Anesthesiology, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
| | - Sankarasubramanian Jagadesan
- Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
| | - Maireen Miravite
- Department of Anesthesiology, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
| | - Chittibabu Guda
- Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
| | - Sowmya V. Yelamanchili
- Department of Anesthesiology, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
- Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
| | - Gurudutt Pendyala
- Department of Anesthesiology, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
- Department of Genetics, Cell Biology, and Anatomy, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
- Child Health Research Institute, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
- National Strategic Research Institute, University of Nebraska Medical Center (UNMC), Omaha, NE 68198, USA
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21
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Rodrigues PM, Sousa LG, Perrod C, Maceiras AR, Ferreirinha P, Pombinho R, Romera-Cárdenas G, Gomez-Lazaro M, Senkara M, Pistolic J, Cabanes D, Klein L, Saftig P, Alves NL. LAMP2 regulates autophagy in the thymic epithelium and thymic stroma-dependent CD4 T cell development. Autophagy 2023; 19:426-439. [PMID: 35535798 PMCID: PMC9851248 DOI: 10.1080/15548627.2022.2074105] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Within the thymus, thymic epithelial cells (TECs) provide dedicated thymic stroma microenvironments for T cell development. Because TEC functionality is sensitive to aging and cytoablative therapies, unraveling the molecular elements that coordinate their thymopoietic role has fundamental and clinical implications. Particularly, the selection of CD4 T cells depends on interactions between TCRs expressed on T cell precursors and self-peptides:MHC II complexes presented by cortical TECs (cTECs). Although the macroautophagy/autophagy-lysosomal protein degradation pathway is implicated in CD4 T cell selection, the molecular mechanism that controls the generation of selecting MHC II ligands remains elusive. LAMP2 (lysosomal-associated membrane protein 2) is a well-recognized mediator of autolysosome (AL) maturation. We showed that LAMP2 is highly expressed in cTECs. Notably, genetic inactivation of Lamp2 in thymic stromal cells specifically impaired the development of CD4 T cells that completed positive selection, without misdirecting MHC II-restricted cells into the CD8 lineage. Mechanistically, defects in autophagy in lamp2-deficient cTECs were linked to alterations in MHC II processing, which was associated with a marked reduction in CD4 TCR repertoire diversity selected within the lamp2-deficient thymic stroma. Together, our findings suggest that LAMP2 interconnects the autophagy-lysosomal axis and the processing of selecting self-peptides:MHC II complexes in cTECs, underling its implications for the generation of a broad CD4 TCR repertoire.Abbreviations: AIRE: autoimmune regulator (autoimmune polyendocrinopathy candidiasis ectodermal dystrophy); AL: autolysosome; AP: autophagosome; Baf-A1: bafilomycin A1; B2M: beta-2 microglobulin; CTSL: cathepsin L; CD74/Ii: CD74 antigen (invariant polypeptide of major histocompatibility complex, class II antigen-associated); CFSE: carboxyfluorescein succinimidyl ester; CFU: colony-forming unit; CLIP: class II-associated invariant chain peptides; cTECs: cortical TECs dKO: double knockout; DN: double negative; DP: double positive; ENPEP/LY51: glutamyl aminopeptidase; FOXP3: forkhead box; P3 IFNG/IFNγ: interferon gamma; IKZF2/HELIOS: IKAROS family zinc finger 2; IL2RA/CD25: interleukin 2 receptor, alpha chain; KO: knockout; LAMP2: lysosomal-associated membrane protein 2; LIP: lymphopenia-induced proliferation; Lm: Listeria monocytogenes; MAP1LC3/LC3: microtubule-associated protein 1 light chain 3; MHC: major histocompatibility complex; mTECs: medullary TECs; PRSS16/TSSP: protease, serine 16 (thymus); SELL/CD62L: selectin, lymphocyte; SP: single positive; TCR: T cell receptor; TCRB: T cell receptor beta chain; TECs: thymic epithelial cells; UEA-1: Ulex europaeus agglutinin-1; WT: wild-type.
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Affiliation(s)
- Pedro M. Rodrigues
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal,Instituto de Biologia Molecular e Celular, Porto, Portugal
| | - Laura G. Sousa
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal,Instituto de Biologia Molecular e Celular, Porto, Portugal,Doctoral Program in Molecular and Cell Biology, Instituto de Ciências Biomédicas Abel Salazar, Universidade do Porto, Porto, Portugal
| | - Chiara Perrod
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal,Instituto de Biologia Molecular e Celular, Porto, Portugal
| | - Ana R. Maceiras
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal
| | - Pedro Ferreirinha
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal,Instituto de Biologia Molecular e Celular, Porto, Portugal
| | - Rita Pombinho
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal,Instituto de Biologia Molecular e Celular, Porto, Portugal
| | - Gema Romera-Cárdenas
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal,Instituto de Biologia Molecular e Celular, Porto, Portugal
| | - María Gomez-Lazaro
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal,Instituto de Engenharia Biomédica, Porto, Portugal
| | - Meryem Senkara
- Biochemisches Institut, Christian Albrechts-Universität Kiel, Kiel, Germany
| | - Jelena Pistolic
- Genomics Core Facility, European Molecular Biology Laboratory, Heidelberg, Germany
| | - Didier Cabanes
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal,Instituto de Biologia Molecular e Celular, Porto, Portugal
| | - Ludger Klein
- Faculty of Medicine, LMU Munich, Planegg-Martinsried, Institute for Immunology, Biomedical Center Munich, Munich, Germany
| | - Paul Saftig
- Biochemisches Institut, Christian Albrechts-Universität Kiel, Kiel, Germany
| | - Nuno L. Alves
- Instituto de Investigação e Inovação em Saúde, Universidade do Porto, Porto, Portugal,Instituto de Biologia Molecular e Celular, Porto, Portugal,CONTACT Nuno L. Alves Instituto de Investigação e Inovação em Saúde (i3S), Rua Alfredo Allen, 208, Porto4200-135, Portugal
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22
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Amaral O, Martins M, Oliveira AR, Duarte AJ, Mondragão-Rodrigues I, Macedo MF. The Biology of Lysosomes: From Order to Disorder. Biomedicines 2023; 11:biomedicines11010213. [PMID: 36672721 PMCID: PMC9856021 DOI: 10.3390/biomedicines11010213] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2022] [Revised: 12/30/2022] [Accepted: 01/11/2023] [Indexed: 01/19/2023] Open
Abstract
Since its discovery in 1955, the understanding of the lysosome has continuously increased. Once considered a mere waste removal system, the lysosome is now recognised as a highly crucial cellular component for signalling and energy metabolism. This notable evolution raises the need for a summarized review of the lysosome's biology. As such, throughout this article, we will be compiling the current knowledge regarding the lysosome's biogenesis and functions. The comprehension of this organelle's inner mechanisms is crucial to perceive how its impairment can give rise to lysosomal disease (LD). In this review, we highlight some examples of LD fine-tuned mechanisms that are already established, as well as others, which are still under investigation. Even though the understanding of the lysosome and its pathologies has expanded through the years, some of its intrinsic molecular aspects remain unknown. In order to illustrate the complexity of the lysosomal diseases we provide a few examples that have challenged the established single gene-single genetic disorder model. As such, we believe there is a strong need for further investigation of the exact abnormalities in the pathological pathways in lysosomal disease.
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Affiliation(s)
- Olga Amaral
- Departamento de Genética Humana, Unidade de Investigação e Desenvolvimento, Instituto Nacional de Saúde Ricardo Jorge (INSA), 4000-055 Porto, Portugal
- Centro de Estudos de Ciência Animal (CECA, ICETA), Universidade do Porto, 4485-661 Porto, Portugal
- Laboratório Associado para Ciência Animal e Veterinária (AL4AnimalS), 1300-477 Lisboa, Portugal
| | - Mariana Martins
- Departamento de Ciências Médicas, Universidade de Aveiro, Campus Universitário de Santiago, Agra do Crasto, Edifício 30, 3810-193 Aveiro, Portugal
| | - Ana Rita Oliveira
- Departamento de Ciências Médicas, Universidade de Aveiro, Campus Universitário de Santiago, Agra do Crasto, Edifício 30, 3810-193 Aveiro, Portugal
| | - Ana Joana Duarte
- Departamento de Genética Humana, Unidade de Investigação e Desenvolvimento, Instituto Nacional de Saúde Ricardo Jorge (INSA), 4000-055 Porto, Portugal
- Centro de Estudos de Ciência Animal (CECA, ICETA), Universidade do Porto, 4485-661 Porto, Portugal
- Laboratório Associado para Ciência Animal e Veterinária (AL4AnimalS), 1300-477 Lisboa, Portugal
- Instituto de Ciências Biomédicas Abel Salazar (ICBAS), Universidade do Porto, 4050-313 Porto, Portugal
| | - Inês Mondragão-Rodrigues
- Departamento de Ciências Médicas, Universidade de Aveiro, Campus Universitário de Santiago, Agra do Crasto, Edifício 30, 3810-193 Aveiro, Portugal
- CAGE, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
| | - M. Fátima Macedo
- Departamento de Ciências Médicas, Universidade de Aveiro, Campus Universitário de Santiago, Agra do Crasto, Edifício 30, 3810-193 Aveiro, Portugal
- CAGE, Instituto de Investigação e Inovação em Saúde (i3S), Universidade do Porto, Rua Alfredo Allen, 208, 4200-135 Porto, Portugal
- Correspondence:
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23
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Barndt RJ, Liu Q, Tang Y, Haugh MP, Cui J, Chan SY, Wu H. Metabolic Maturation Exaggerates Abnormal Calcium Handling in a Lamp2 Knockout Human Pluripotent Stem Cell-Derived Cardiomyocyte Model of Danon Disease. Biomolecules 2022; 13:69. [PMID: 36671453 PMCID: PMC9855424 DOI: 10.3390/biom13010069] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2022] [Revised: 12/27/2022] [Accepted: 12/27/2022] [Indexed: 01/01/2023] Open
Abstract
Danon disease (DD) is caused by mutations of the gene encoding lysosomal-associated membrane protein type 2 (LAMP2), which lead to impaired autophagy, glycogen accumulation, and cardiac hypertrophy. However, it is not well understood why a large portion of DD patients develop arrhythmia and sudden cardiac death. In the current study, we generated LAMP2 knockout (KO) human iPSC-derived cardiomyocytes (CM), which mimic the LAMP2 dysfunction in DD heart. Morphologic analysis demonstrated the sarcomere disarrangement in LAMP2 KO CMs. In functional studies, LAMP2 KO CMs showed near-normal calcium handling at base level. However, treatment of pro-maturation medium (MM) exaggerated the disease phenotype in the KO cells as they exhibited impaired calcium recycling and increased irregular beating events, which recapitulates the pro-arrhythmia phenotypes of DD patients. Further mechanistic study confirmed that MM treatment significantly enhanced the autophagic stress in the LAMP2 KO CMs, which was accompanied by an increase of both cellular and mitochondrial reactive oxygen species (ROS) levels. Excess ROS accumulation in LAMP2 KO CMs resulted in the over-activation of calcium/calmodulin dependent protein kinase IIδ (CaMKIIδ) and arrhythmogenesis, which was partially rescued by the treatment of ROS scavenger. In summary, our study has revealed ROS induced CaMKIIδ overactivation as a key mechanism that promotes cardiac arrhythmia in DD patients.
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Affiliation(s)
- Robert J. Barndt
- Pittsburgh Heart, Lung, and Blood Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Qing Liu
- Department of Biological Sciences, Clemson University, Clemson, SC 29634, USA
- Center for Human Genetics, Clemson University, Greenwood, SC 29646, USA
| | - Ying Tang
- Pittsburgh Heart, Lung, and Blood Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Michael P. Haugh
- Department of Bioengineering, University of Pittsburgh Swanson School of Engineering, Pittsburgh, PA 15213, USA
| | - Jeffery Cui
- Department of Biological Sciences, University of Pittsburgh, Pittsburgh, PA 15260, USA
| | - Stephen Y. Chan
- Pittsburgh Heart, Lung, and Blood Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
| | - Haodi Wu
- Pittsburgh Heart, Lung, and Blood Vascular Medicine Institute, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
- Department of Bioengineering, University of Pittsburgh Swanson School of Engineering, Pittsburgh, PA 15213, USA
- Division of Cardiology, Department of Medicine, University of Pittsburgh School of Medicine, Pittsburgh, PA 15261, USA
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24
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Sher AA, Lao YT, Coombs KM. HLA-A, HSPA5, IGFBP5 and PSMA2 Are Restriction Factors for Zika Virus Growth in Astrocytic Cells. Viruses 2022; 15:97. [PMID: 36680137 PMCID: PMC9863221 DOI: 10.3390/v15010097] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Revised: 12/27/2022] [Accepted: 12/28/2022] [Indexed: 12/31/2022] Open
Abstract
(1) Background: Zika virus (ZIKV), an arbo-flavivirus, is transmitted via Aeges aegyptii mosquitoes Following its major outbreaks in 2013, 2014 and 2016, WHO declared it a Public Health Emergency of International Concern. Symptoms of ZIKV infection include acute fever, conjunctivitis, headache, muscle & joint pain and malaise. Cases of its transmission also have been reported via perinatal, sexual and transfusion transmission. ZIKV pathologies include meningo-encephalitis and myelitis in the central nervous system (CNS) and Guillain-Barré syndrome and acute transient polyneuritis in the peripheral nervous system (PNS). Drugs like azithromycin have been tested as inhibitors of ZIKV infection but no vaccines or treatments are currently available. Astrocytes are the most abundant cells in the CNS and among the first cells in CNS infected by ZIKV; (2) Methods: We previously used SOMAScan proteomics to study ZIKV-infected astrocytic cells. Here, we use mass spectrometric analyses to further explain dysregulations in the cellular expression profile of glioblastoma astrocytoma U251 cells. We also knocked down (KD) some of the U251 cellular proteins using siRNAs and observed the impact on ZIKV replication and infectivity; (3) Results & Conclusions: The top ZIKV dysregulated cellular networks were antimicrobial response, cell death, and energy production while top dysregulated functions were antigen presentation, viral replication and cytopathic impact. Th1 and interferon signaling pathways were among the top dysregulated canonical pathways. siRNA-mediated KD of HLA-A, IGFBP5, PSMA2 and HSPA5 increased ZIKV titers and protein synthesis, indicating they are ZIKV restriction factors. ZIKV infection also restored HLA-A expression in HLA-A KD cells by 48 h post-infection, suggesting interactions between this gene product and ZIKV.
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Affiliation(s)
- Affan A. Sher
- Department of Medical Microbiology & Infectious Diseases, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
| | - Ying Tenny Lao
- Manitoba Centre for Proteomics & Systems Biology, University of Manitoba, Winnipeg, MB R3E 3P4, Canada
| | - Kevin M. Coombs
- Department of Medical Microbiology & Infectious Diseases, University of Manitoba, Winnipeg, MB R3E 0J9, Canada
- Manitoba Centre for Proteomics & Systems Biology, University of Manitoba, Winnipeg, MB R3E 3P4, Canada
- Children’s Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada
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25
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Pereira-Veiga T, Bravo S, Gómez-Tato A, Yáñez-Gómez C, Abuín C, Varela V, Cueva J, Palacios P, Dávila-Ibáñez AB, Piñeiro R, Vilar A, Chantada-Vázquez MDP, López-López R, Costa C. Red Blood Cells Protein Profile Is Modified in Breast Cancer Patients. Mol Cell Proteomics 2022; 21:100435. [PMID: 36519745 PMCID: PMC9713370 DOI: 10.1016/j.mcpro.2022.100435] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 10/14/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022] Open
Abstract
Metastasis is the primary cause of death for most breast cancer (BC) patients who succumb to the disease. During the hematogenous dissemination, circulating tumor cells interact with different blood components. Thus, there are microenvironmental and systemic processes contributing to cancer regulation. We have recently published that red blood cells (RBCs) that accompany circulating tumor cells have prognostic value in metastatic BC patients. RBC alterations are related to several diseases. Although the principal known role is gas transport, it has been recently assigned additional functions as regulatory cells on circulation. Hence, to explore their potential contribution to tumor progression, we characterized the proteomic composition of RBCs from 53 BC patients from stages I to III and IV, compared with 33 cancer-free controls. In this work, we observed that RBCs from BC patients showed a different proteomic profile compared to cancer-free controls and between different tumor stages. The differential proteins were mainly related to extracellular components, proteasome, and metabolism. Embryonic hemoglobins, not expected in adults' RBCs, were detected in BC patients. Besides, lysosome-associated membrane glycoprotein 2 emerge as a new RBCs marker with diagnostic and prognostic potential for metastatic BC patients. Seemingly, RBCs are acquiring modifications in their proteomic composition that probably represents the systemic cancer disease, conditioned by the tumor microenvironment.
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Affiliation(s)
- Thais Pereira-Veiga
- Roche-Chus Joint Unit, Translational Medical Oncology Group, Oncomet, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Susana Bravo
- Proteomic Unit, Instituto de Investigaciones Sanitarias-IDIS, Complejo Hospitalario Universitario de Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - Antonio Gómez-Tato
- CITMAga, University of Santiago de Compostela (Campus Vida), Santiago de Compostela, Spain
| | - Celso Yáñez-Gómez
- Roche-Chus Joint Unit, Translational Medical Oncology Group, Oncomet, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Carmen Abuín
- Roche-Chus Joint Unit, Translational Medical Oncology Group, Oncomet, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain
| | - Vanesa Varela
- Department of Oncology, University Hospital of Santiago de Compostela (SERGAS), Santiago de Compostela, Spain
| | - Juan Cueva
- Department of Oncology, University Hospital of Santiago de Compostela (SERGAS), Santiago de Compostela, Spain
| | - Patricia Palacios
- Department of Oncology, University Hospital of Santiago de Compostela (SERGAS), Santiago de Compostela, Spain
| | - Ana B Dávila-Ibáñez
- Roche-Chus Joint Unit, Translational Medical Oncology Group, Oncomet, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain; CIBERONC, Centro de Investigación Biomédica en Red Cáncer, Madrid, Spain
| | - Roberto Piñeiro
- Roche-Chus Joint Unit, Translational Medical Oncology Group, Oncomet, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain; CIBERONC, Centro de Investigación Biomédica en Red Cáncer, Madrid, Spain
| | - Ana Vilar
- Department of Gynecology, University Hospital of Santiago de Compostela (SERGAS), Santiago de Compostela, Spain
| | - María Del Pilar Chantada-Vázquez
- Proteomic Unit, Instituto de Investigaciones Sanitarias-IDIS, Complejo Hospitalario Universitario de Santiago de Compostela (CHUS), Santiago de Compostela, Spain
| | - Rafael López-López
- Roche-Chus Joint Unit, Translational Medical Oncology Group, Oncomet, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain; Department of Oncology, University Hospital of Santiago de Compostela (SERGAS), Santiago de Compostela, Spain; CIBERONC, Centro de Investigación Biomédica en Red Cáncer, Madrid, Spain.
| | - Clotilde Costa
- Roche-Chus Joint Unit, Translational Medical Oncology Group, Oncomet, Health Research Institute of Santiago de Compostela (IDIS), Santiago de Compostela, Spain; CIBERONC, Centro de Investigación Biomédica en Red Cáncer, Madrid, Spain.
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26
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González-Rodríguez P, Delorme-Axford E, Bernard A, Keane L, Stratoulias V, Grabert K, Engskog-Vlachos P, Füllgrabe J, Klionsky DJ, Joseph B. SETD2 transcriptional control of ATG14L/S isoforms regulates autophagosome-lysosome fusion. Cell Death Dis 2022; 13:953. [PMID: 36371383 PMCID: PMC9653477 DOI: 10.1038/s41419-022-05381-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2022] [Revised: 10/19/2022] [Accepted: 10/26/2022] [Indexed: 11/13/2022]
Abstract
Macroautophagy/autophagy is an evolutionarily conserved and tightly regulated catabolic process involved in the maintenance of cellular homeostasis whose dysregulation is implicated in several pathological processes. Autophagy begins with the formation of phagophores that engulf cytoplasmic cargo and mature into double-membrane autophagosomes; the latter fuse with lysosomes/vacuoles for cargo degradation and recycling. Here, we report that yeast Set2, a histone lysine methyltransferase, and its mammalian homolog, SETD2, both act as positive transcriptional regulators of autophagy. However, whereas Set2 regulates the expression of several autophagy-related (Atg) genes upon nitrogen starvation, SETD2 effects in mammals were found to be more restricted. In fact, SETD2 appears to primarily regulate the differential expression of protein isoforms encoded by the ATG14 gene. SETD2 promotes the expression of a long ATG14 isoform, ATG14L, that contains an N-terminal cysteine repeats domain, essential for the efficient fusion of the autophagosome with the lysosome, that is absent in the short ATG14 isoform, ATG14S. Accordingly, SETD2 loss of function decreases autophagic flux, as well as the turnover of aggregation-prone proteins such as mutant HTT (huntingtin) leading to increased cellular toxicity. Hence, our findings bring evidence to the emerging concept that the production of autophagy-related protein isoforms can differentially affect core autophagy machinery bringing an additional level of complexity to the regulation of this biological process in more complex organisms.
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Affiliation(s)
- Patricia González-Rodríguez
- Institute of Environmental Medicine, Toxicology Unit, Karolinska Institutet, 17177, Stockholm, Sweden
- Department of Oncology Pathology, Cancer Centrum Karolinska, Karolinska Institutet, 171 76, Stockholm, Sweden
- Division of Biochemistry, Department of Molecular Medicine, Institute of Basic Medical Sciences, University of Oslo, Oslo, Norway
| | - Elizabeth Delorme-Axford
- Life Sciences Institute, and the Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
- Department of Biological Sciences, Oakland University, Rochester, MI, USA
| | - Amélie Bernard
- Life Sciences Institute, and the Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
- University of Bordeaux, CNRS, Laboratoire de Biogenèse Membranaire, UMR 5200, F-33140, Villenave d'Ornon, France
| | - Lily Keane
- Institute of Environmental Medicine, Toxicology Unit, Karolinska Institutet, 17177, Stockholm, Sweden
| | - Vassilis Stratoulias
- Institute of Environmental Medicine, Toxicology Unit, Karolinska Institutet, 17177, Stockholm, Sweden
- Department of Oncology Pathology, Cancer Centrum Karolinska, Karolinska Institutet, 171 76, Stockholm, Sweden
- Neuroscience Center, HiLIFE, University of Helsinki, Helsinki, Finland
| | - Kathleen Grabert
- Institute of Environmental Medicine, Toxicology Unit, Karolinska Institutet, 17177, Stockholm, Sweden
| | - Pinelopi Engskog-Vlachos
- Institute of Environmental Medicine, Toxicology Unit, Karolinska Institutet, 17177, Stockholm, Sweden
| | - Jens Füllgrabe
- Department of Oncology Pathology, Cancer Centrum Karolinska, Karolinska Institutet, 171 76, Stockholm, Sweden
| | - Daniel J Klionsky
- Life Sciences Institute, and the Department of Molecular, Cellular and Developmental Biology, University of Michigan, Ann Arbor, MI, USA
| | - Bertrand Joseph
- Institute of Environmental Medicine, Toxicology Unit, Karolinska Institutet, 17177, Stockholm, Sweden.
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27
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Chaudhry N, Sica M, Surabhi S, Hernandez DS, Mesquita A, Selimovic A, Riaz A, Lescat L, Bai H, MacIntosh GC, Jenny A. Lamp1 mediates lipid transport, but is dispensable for autophagy in Drosophila. Autophagy 2022; 18:2443-2458. [PMID: 35266854 PMCID: PMC9542896 DOI: 10.1080/15548627.2022.2038999] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 01/31/2022] [Accepted: 02/03/2022] [Indexed: 01/03/2023] Open
Abstract
The endolysosomal system not only is an integral part of the cellular catabolic machinery that processes and recycles nutrients for synthesis of biomaterials, but also acts as signaling hub to sense and coordinate the energy state of cells with growth and differentiation. Lysosomal dysfunction adversely influences vesicular transport-dependent macromolecular degradation and thus causes serious problems for human health. In mammalian cells, loss of the lysosome associated membrane proteins LAMP1 and LAMP2 strongly affects autophagy and cholesterol trafficking. Here we show that the previously uncharacterized Drosophila Lamp1 is a bona fide ortholog of vertebrate LAMP1 and LAMP2. Surprisingly and in contrast to lamp1 lamp2 double-mutant mice, Drosophila Lamp1 is not required for viability or autophagy, suggesting that fly and vertebrate LAMP proteins acquired distinct functions, or that autophagy defects in lamp1 lamp2 mutants may have indirect causes. However, Lamp1 deficiency results in an increase in the number of acidic organelles in flies. Furthermore, we find that Lamp1 mutant larvae have defects in lipid metabolism as they show elevated levels of sterols and diacylglycerols (DAGs). Because DAGs are the main lipid species used for transport through the hemolymph (blood) in insects, our results indicate broader functions of Lamp1 in lipid transport. Our findings make Drosophila an ideal model to study the role of LAMP proteins in lipid assimilation without the confounding effects of their storage and without interfering with autophagic processes.Abbreviations: aa: amino acid; AL: autolysosome; AP: autophagosome; APGL: autophagolysosome; AV: autophagic vacuole (i.e. AP and APGL/AL); AVi: early/initial autophagic vacuoles; AVd: late/degradative autophagic vacuoles; Atg: autophagy-related; CMA: chaperone-mediated autophagy; Cnx99A: Calnexin 99A; DAG: diacylglycerol; eMI: endosomal microautophagy; ESCRT: endosomal sorting complexes required for transport; FB: fat body; HDL: high-density lipoprotein; Hrs: Hepatocyte growth factor regulated tyrosine kinase substrate; LAMP: lysosomal associated membrane protein; LD: lipid droplet; LDL: low-density lipoprotein; Lpp: lipophorin; LTP: Lipid transfer particle; LTR: LysoTracker Red; MA: macroautophagy; MCC: Manders colocalization coefficient; MEF: mouse embryonic fibroblast MTORC: mechanistic target of rapamycin kinase complex; PV: parasitophorous vacuole; SNARE: soluble N-ethylmaleimide sensitive factor attachment protein receptor; Snap: Synaptosomal-associated protein; st: starved; TAG: triacylglycerol; TEM: transmission electron microscopy; TFEB/Mitf: transcription factor EB; TM: transmembrane domain; tub: tubulin; UTR: untranslated region.
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Affiliation(s)
- Norin Chaudhry
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, USA
| | - Margaux Sica
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, USA
| | - Satya Surabhi
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, USA
| | | | - Ana Mesquita
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, USA
| | - Adem Selimovic
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, USA
| | - Ayesha Riaz
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, USA
| | - Laury Lescat
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, USA
| | - Hua Bai
- Department of Genetics, Development and Cell Biology, Iowa State University, Ames, IA, USA
| | - Gustavo C. MacIntosh
- Roy J. Carver Department of Biochemistry, Biophysics and Molecular Biology, Iowa State University, Ames, IA, USA
| | - Andreas Jenny
- Department of Developmental and Molecular Biology, Albert Einstein College of Medicine, USA
- Department of Genetics, Albert Einstein College of MedicineNew York, NY, USA
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28
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Germline FOXJ2 overexpression causes male infertility via aberrant autophagy activation by LAMP2A upregulation. Cell Death Dis 2022; 13:665. [PMID: 35908066 PMCID: PMC9338950 DOI: 10.1038/s41419-022-05116-w] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2021] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 01/21/2023]
Abstract
Spermatogenesis is a complex biological process that produces haploid spermatozoa and requires precise regulation by many tissue-specific factors. In this study, we explored the role and mechanism of Fork head box J2 (FOXJ2, which is highly expressed in spermatocytes) in the regulation of spermatogenesis using a germline-specific conditional Foxj2 knock-in mouse model (Stra8-Cre; Foxj2 tg/tg mouse). Foxj2 overexpression in mouse testes led to spermatogenesis failure, which started at the initiation of meiosis, and resulted in male infertility. Lysosomes and autophagy-related genes were upregulated in Stra8-cre; Foxj2 tg/tg mouse testes and the number of autolysosomes in the spermatocytes in Stra8-cre; Foxj2 tg/tg mice was increased. Chromatin immunoprecipitation-PCR and Dual-luciferase reporter assays showed that Lamp2 (encoding lysosome-associated membrane protein-2) was a target of FOXJ2. Foxj2 overexpression increased the expression levels of Lamp2a and Hsc70 (70-kDa cytoplasmic heat shock protein) in the Stra8-cre; Foxj2 tg/tg mouse testes. Our results suggested that Foxj2 overexpression in the germ cells of mouse testes affects chaperone-mediated autophagy by upregulating LAMP2A, leading to spermatogenesis failure at the initiation of meiosis, thus resulting in male infertility. Our findings provide a new insight into the function of FOXJ2 in spermatogenesis and the significance of autophagy regulation in spermatogenesis.
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29
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Han JH, Kim YK, Kim H, Lee J, Oh MJ, Kim SB, Kim M, Kim KH, Yoon HJ, Lee MS, Minna JD, White MA, Kim HS. Snail acetylation by autophagy-derived acetyl-coenzyme A promotes invasion and metastasis of KRAS-LKB1 co-mutated lung cancer cells. CANCER COMMUNICATIONS (LONDON, ENGLAND) 2022; 42:716-749. [PMID: 35838183 PMCID: PMC9395322 DOI: 10.1002/cac2.12332] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/21/2022] [Accepted: 06/26/2022] [Indexed: 11/29/2022]
Abstract
Background Autophagy is elevated in metastatic tumors and is often associated with active epithelial‐to‐mesenchymal transition (EMT). However, the extent to which EMT is dependent on autophagy is largely unknown. This study aimed to identify the mechanisms by which autophagy facilitates EMT. Methods We employed a liquid chromatography‐based metabolomic approach with kirsten rat sarcoma viral oncogene (KRAS) and liver kinase B1 (LKB1) gene co‐mutated (KL) cells that represent an autophagy/EMT‐coactivated invasive lung cancer subtype for the identification of metabolites linked to autophagy‐driven EMT activation. Molecular mechanisms of autophagy‐driven EMT activation were further investigated by quantitative real‐time polymerase chain reaction (qRT‐PCR), Western blotting analysis, immunoprecipitation, immunofluorescence staining, and metabolite assays. The effects of chemical and genetic perturbations on autophagic flux were assessed by two orthogonal approaches: microtubule‐associated protein 1A/1B‐light chain 3 (LC3) turnover analysis by Western blotting and monomeric red fluorescent protein‐green fluorescent protein (mRFP‐GFP)‐LC3 tandem fluorescent protein quenching assay. Transcription factor EB (TFEB) activity was measured by coordinated lysosomal expression and regulation (CLEAR) motif‐driven luciferase reporter assay. Experimental metastasis (tail vein injection) mouse models were used to evaluate the impact of calcium/calmodulin‐dependent protein kinase kinase 2 (CAMKK2) or ATP citrate lyase (ACLY) inhibitors on lung metastasis using IVIS luciferase imaging system. Results We found that autophagy in KL cancer cells increased acetyl‐coenzyme A (acetyl‐CoA), which facilitated the acetylation and stabilization of the EMT‐inducing transcription factor Snail. The autophagy/acetyl‐CoA/acetyl‐Snail axis was further validated in tumor tissues and in autophagy‐activated pancreatic cancer cells. TFEB acetylation in KL cancer cells sustained pro‐metastatic autophagy in a mammalian target of rapamycin complex 1 (mTORC1)‐independent manner. Pharmacological inhibition of this axis via CAMKK2 inhibitors or ACLY inhibitors consistently reduced the metastatic capacity of KL cancer cells in vivo. Conclusions This study demonstrates that autophagy‐derived acetyl‐CoA promotes Snail acetylation and thereby facilitates invasion and metastasis of KRAS‐LKB1 co‐mutated lung cancer cells and that inhibition of the autophagy/acetyl‐CoA/acetyl‐Snail axis using CAMKK2 or ACLY inhibitors could be a potential therapeutic strategy to suppress metastasis of KL lung cancer.
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Affiliation(s)
- Jang Hee Han
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea.,Department of Medical Science, Yonsei University Graduate School, Seoul, 03722, Korea.,Department of Urology, Seoul National University Hospital, Seoul, 03722, Korea
| | - Yong Keon Kim
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Hakhyun Kim
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Jooyoung Lee
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea.,Checkmate Therapeutics Inc., Seoul, 07207, Korea
| | - Myung Joon Oh
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Sang Bum Kim
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Minjee Kim
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Kook Hwan Kim
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Hyun Ju Yoon
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - Myung-Shik Lee
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea
| | - John D Minna
- Hamon Center for Therapeutic Oncology Research, University of Texas Southwestern Medical Center, Dallas, Texas, 75390, USA
| | - Michael A White
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas, 75390, USA
| | - Hyun Seok Kim
- Severance Biomedical Science Institute, Yonsei University College of Medicine, Seoul, 03722, Korea.,Checkmate Therapeutics Inc., Seoul, 07207, Korea.,Graduate School of Medical Science, Brain Korea 21 Project, Yonsei University College of Medicine, Seoul, 03722, Korea
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30
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Endothelial Autophagy in Coronary Microvascular Dysfunction and Cardiovascular Disease. Cells 2022; 11:cells11132081. [PMID: 35805165 PMCID: PMC9265562 DOI: 10.3390/cells11132081] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2022] [Revised: 06/22/2022] [Accepted: 06/28/2022] [Indexed: 02/06/2023] Open
Abstract
Coronary microvascular dysfunction (CMD) refers to a subset of structural and/or functional disorders of coronary microcirculation that lead to impaired coronary blood flow and eventually myocardial ischemia. Amid the growing knowledge of the pathophysiological mechanisms and the development of advanced tools for assessment, CMD has emerged as a prevalent cause of a broad spectrum of cardiovascular diseases (CVDs), including obstructive and nonobstructive coronary artery disease, diabetic cardiomyopathy, and heart failure with preserved ejection fraction. Of note, the endothelium exerts vital functions in regulating coronary microvascular and cardiac function. Importantly, insufficient or uncontrolled activation of endothelial autophagy facilitates the pathogenesis of CMD in diverse CVDs. Here, we review the progress in understanding the pathophysiological mechanisms of autophagy in coronary endothelial cells and discuss their potential role in CMD and CVDs.
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31
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Saurav S, Manna SK. Profilin upregulation induces autophagy through stabilization of AMP-activated protein kinase. FEBS Lett 2022; 596:1765-1777. [PMID: 35532157 DOI: 10.1002/1873-3468.14372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 04/27/2022] [Accepted: 05/02/2022] [Indexed: 11/10/2022]
Abstract
Profilin regulates actin polymerization, and its balanced expression is required for cellular growth and development. Most tumors have compromised profilin expression, and its overexpression in MDA MB-231 breast cancer cells has been reported to activate AMP-activated protein kinase α (AMPKα), an energy-sensing molecule that affects various cellular processes including autophagy. The present study aims to explore the role of profilin in inducing autophagy. We employed all-trans retinoic acid (ATRA) as an inducer of profilin expression and showed that profilin induces autophagy through mTOR inhibition, autophagy-activating kinase ULK1 upregulation, and AMPK stabilization as well as its activation. Furthermore, evidence from our study indicates physical interaction between profilin and AMPK, which results in AMPK stabilization and induction of prolonged autophagy, thereby leading to apoptosis. This study uncovers a novel mechanism that induces autophagy in triple-negative breast cancer cells.
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Affiliation(s)
- Shashank Saurav
- Laboratory of Immunology, Centre for DNA Fingerprinting & Diagnostics, Uppal, Hyderabad, 500 039, Telangana, India.,Graduate Studies, Manipal Academy of Higher Education, Manipal, 576104, Karnataka, India
| | - Sunil Kumar Manna
- Laboratory of Immunology, Centre for DNA Fingerprinting & Diagnostics, Uppal, Hyderabad, 500 039, Telangana, India
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32
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Kubekina MV, Kalinina AA, Korshunova DS, Bruter AV, Silaeva YY. Models of mitochondrial dysfunction with inducible expression of Polg pathogenic mutant variant. BULLETIN OF RUSSIAN STATE MEDICAL UNIVERSITY 2022. [DOI: 10.24075/brsmu.2022.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Mitochondrial dysfunctions, which underlie many systemic diseases in animals and humans, may arise from accumulation of mutations in the mitochondrial genome. PolG-alpha enzyme encoded by Polg gene is crucial for replication and repair of the mitochondrial genome. The aim of this study was to assess the possible role of Polg mutations in mitochondrial dysfunctions using in vitro and in vivo animal models. The experiments involved transgenic mice with inducible expression of Polg mutant variant; the methods included cell culture, real time PCR assay, fluorescence flow cytometry, and skeletal muscle functional tests. The results indicate that mouse embryonic fibroblasts (MEFs) expressing Polg pathogenic mutant variant have decreased mitochondrial membrane potential and increased expression of mitophagy markers compared with control cultures. Transgenic animals with systemic expression of the pathogenic variant develop mitochondrial dysfunction which significantly affects muscular performance. In addition, systemic expression of mutated Polg in transgenic animals significantly inhibits expression of TCR subunit α and CD3 coreceptor complex subunits δ and ε in total splenocyte populations and significantly affects cellularity of the thymus without altering its CD4/CD8 subpopulation ratio. Thus, inducible expression of mutated Polg in transgenic animals provides a relevant model for studying mitochondrial dysfunction and its treatment in vitro and in vivo.
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Affiliation(s)
| | - AA Kalinina
- Blokhin Russian Cancer Research Center, Moscow, Russia
| | | | - AV Bruter
- Institute of Gene Biology, Moscow, Russia
| | - YY Silaeva
- Institute of Gene Biology, Moscow, Russia
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33
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The Association of Serum Anti-Lysosomal-Associated Membrane Protein-2 Antibody with Vasculitis Combined with Hypertension. Int J Hypertens 2022; 2022:9656560. [PMID: 35356030 PMCID: PMC8960034 DOI: 10.1155/2022/9656560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2021] [Accepted: 02/24/2022] [Indexed: 11/18/2022] Open
Abstract
The aim of this study was to explore the association of serum anti-lysosomal-associated membrane protein-2 (anti-LAMP-2) antibody with vasculitis combined with hypertension (VAS-HTN). A total of 51 VAS-HTN patients, 46 essential hypertension (EH) patients, and 46 healthy controls (HC) were included in the study. Serum anti-LAMP-2 antibody levels are increased in VAS-HTN patients as compared with EH and HC (all
). Serum anti-LAMP-2 antibody levels were significantly higher in active stage patients than those in non-active stage patients and HC (all
). The correlation analysis showed a significant positive correlation between serum anti-LAMP-2 antibody levels and the Birmingham Vasculitis Activity Score (BVAS) and hypersensitive C-reactive protein (Hs-CRP) (all
). Among the subsets of VAS-HTN, the levels of serum anti-LAMP-2 antibody were remarkably higher in all VAS-HTN subsets compared with HC (all
). More interestingly, the levels of serum anti-LAMP-2 antibody were remarkably increased in polyarteritis nodosa (PAN) patients compared with ANCA-associated vasculitis and Takayasu arteritis patients (all
). In addition, there was a significant positive correlation between serum anti-LAMP-2 antibody levels and BAVS and Hs-CRP in PAN patients (all
). Multivariate logistic regression analysis showed that the anti-LAMP-2 antibody was independently associated with VAS-HTN. The levels of serum anti-LAMP-2 antibody were remarkably increased in VAS-HTN patients compared to EH and HC and might reflect the disease activity. The anti-LAMP-2 antibody may be a potential biomarker for diagnosis and estimating the disease activity in VAS-HTN.
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34
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Chacko A, Delbaz A, Choudhury IN, Eindorf T, Shah M, Godfrey C, Sullivan MJ, St John JA, Ulett GC, Ekberg JAK. Streptococcus agalactiae Infects Glial Cells and Invades the Central Nervous System via the Olfactory and Trigeminal Nerves. Front Cell Infect Microbiol 2022; 12:793416. [PMID: 35281448 PMCID: PMC8907725 DOI: 10.3389/fcimb.2022.793416] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Accepted: 02/07/2022] [Indexed: 11/13/2022] Open
Abstract
Streptococcus agalactiae causes neonatal meningitis and can also infect the adult central nervous system (CNS). S. agalactiae can cross the blood-brain barrier but may also reach the CNS via other paths. Several species of bacteria can directly invade the CNS via the olfactory and trigeminal nerves, which extend between the nasal cavity and brain and injury to the nasal epithelium can increase the risk/severity of infection. Preterm birth is associated with increased risk of S. agalactiae infection and with nasogastric tube feeding. The tubes, also used in adults, can cause nasal injuries and may be contaminated with bacteria, including S. agalactiae. We here investigated whether S. agalactiae could invade the CNS after intranasal inoculation in mice. S. agalactiae rapidly infected the olfactory nerve and brain. Methimazole-mediated model of nasal epithelial injury led to increased bacterial load in these tissues, as well as trigeminal nerve infection. S. agalactiae infected and survived intracellularly in cultured olfactory/trigeminal nerve- and brain-derived glia, resulting in cytokine production, with some differences between glial types. Furthermore, a non-capsulated S. agalactiae was used to understand the role of capsule on glial cells interaction. Interestingly, we found that the S. agalactiae capsule significantly altered cytokine and chemokine responses and affected intracellular survival in trigeminal glia. In summary, this study shows that S. agalactiae can infect the CNS via the nose-to-brain path with increased load after epithelial injury, and that the bacteria can survive in glia.
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Affiliation(s)
- Anu Chacko
- Menzies Health Institute Queensland and School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
- Clem Jones Centre for Neurobiology and Stem Cell Research, Griffith University, Nathan, QLD, Australia
| | - Ali Delbaz
- Menzies Health Institute Queensland and School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
- Clem Jones Centre for Neurobiology and Stem Cell Research, Griffith University, Nathan, QLD, Australia
| | - Indra N. Choudhury
- Menzies Health Institute Queensland and School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
- Clem Jones Centre for Neurobiology and Stem Cell Research, Griffith University, Nathan, QLD, Australia
| | - Tanja Eindorf
- Menzies Health Institute Queensland and School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
- Clem Jones Centre for Neurobiology and Stem Cell Research, Griffith University, Nathan, QLD, Australia
| | - Megha Shah
- Menzies Health Institute Queensland and School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
- Clem Jones Centre for Neurobiology and Stem Cell Research, Griffith University, Nathan, QLD, Australia
| | - Christopher Godfrey
- Menzies Health Institute Queensland and School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
- Clem Jones Centre for Neurobiology and Stem Cell Research, Griffith University, Nathan, QLD, Australia
| | - Matthew J. Sullivan
- Menzies Health Institute Queensland and School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
| | - James A. St John
- Menzies Health Institute Queensland and School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
- Clem Jones Centre for Neurobiology and Stem Cell Research, Griffith University, Nathan, QLD, Australia
- Griffith Institute for Drug Discovery, Griffith University, Nathan, QLD, Australia
| | - Glen C. Ulett
- Menzies Health Institute Queensland and School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
| | - Jenny A. K. Ekberg
- Menzies Health Institute Queensland and School of Pharmacy and Medical Sciences, Griffith University, Southport, QLD, Australia
- Clem Jones Centre for Neurobiology and Stem Cell Research, Griffith University, Nathan, QLD, Australia
- Griffith Institute for Drug Discovery, Griffith University, Nathan, QLD, Australia
- *Correspondence: Jenny A. K. Ekberg,
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Cereulide and Deoxynivalenol Increase LC3 Protein Levels in HepG2 Liver Cells. Toxins (Basel) 2022; 14:toxins14020151. [PMID: 35202179 PMCID: PMC8880806 DOI: 10.3390/toxins14020151] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2022] [Accepted: 02/14/2022] [Indexed: 02/05/2023] Open
Abstract
Food contaminants of bacterial or fungal origin frequently contaminate staple foods to various extents. Among others, the bacterial toxin cereulide (CER) and the mycotoxin deoxynivalenol (DON) co-occur in a mixed diet and are absorbed by the human body. Both toxins exert dis-tinctive mitotoxic potential. As damaged mitochondria are removed via autophagy, mitochondrial and lysosomal toxicity were assessed by applying low doses of single and combined toxins (CER 0.1-50 ng/mL; DON 0.01-5 µg/mL) to HepG2 liver cells. In addition to cytotoxicity assays, RT-qPCR was performed to investigate genes involved in lysosomal biogenesis and autophagy. CER and DON caused significant cytotoxicity on HepG2 cells after 5 and 24 h over a broad concentration range. CER, alone and in combination with DON, increased the transcription of the autophagy related genes coding for the microtubule associated protein 1A/1B light chain 3 (LC3) and sequestome 1 (SQSTM1) as well as LC3 protein expression which was determined using immunocytochemistry. DON increased LC3 protein expression without induction of gene transcription, hence it seems plausible that CER and DON act on different pathways. The results support the hypothesis that CER induces autophagy via the LC3 pathway and damaged mitochondria are therefore eliminated.
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Alcohol Aggravates Acute Pancreatitis by Impairing Autophagic Flux Through Activation of AMPK Signaling Pathway. Dig Dis Sci 2022; 67:524-535. [PMID: 33555515 DOI: 10.1007/s10620-021-06870-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 01/20/2021] [Indexed: 12/09/2022]
Abstract
OBJECTIVE Alcohol consumption is always the main cause of acute pancreatitis (AP). It has been reported that alcohol exerts direct damage to the pancreas. However, the specific role of alcohol during AP needs to be investigated. This study aims to examine the effects of alcohol in cerulein-induced AP and the role of the AMPK pathway. METHODS Human subjects from operations, cerulein-induced AP rat, and cerulein-stimulated AR42J cell line were enrolled in this study. Electron microscopy was employed for observation of cell morphology, immunohistochemistry for identification of cells, ELISA for detection of inflammation factors, Annexin V/PI double staining for evaluation of cell apoptosis, immunofluorescence for assessment of autophagic flux, oil red O staining for examination of lipid droplet accumulation, and Western blot for measurement of expressions of proteins related to autophagy, apoptosis, and AMPK signal pathway. PI3K inhibitor 3-MA and AMPK inhibitor BML-275 were utilized for investigation of the relationship between impaired autophagic flux and the AMPK pathway by inhibiting or stimulating the formation of autophagosome. RESULTS Alcohol consumption caused lipid droplet accumulation in the pancreas, and it also activated AMPK signaling pathway, thus aggravating the autophagic flux during AP. Alcohol up-regulated the expressions of anti-apoptotic proteins during the induction of AP to inhibit cell apoptosis and enhance cell necrosis. Inhibition of autophagosome formation by AMPK inhibitor BML-275 ameliorated the decreased cell viability caused by alcohol and cerulein in vitro. CONCLUSION Alcohol aggravates AP progression by impairing autophagic flux and enhancing cell autophagy through the AMPK signaling pathway.
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Oliveira ACS, Rezende L, Gorshkov V, Melo-Braga MN, Verano-Braga T, Fernandes-Braga W, Guadalupe JLDM, de Menezes GB, Kjeldsen F, de Andrade HM, Andrade LDO. Biological and Molecular Effects of Trypanosoma cruzi Residence in a LAMP-Deficient Intracellular Environment. Front Cell Infect Microbiol 2022; 11:788482. [PMID: 35071040 PMCID: PMC8770540 DOI: 10.3389/fcimb.2021.788482] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2021] [Accepted: 12/06/2021] [Indexed: 01/08/2023] Open
Abstract
Trypanosoma cruzi invades non-professional phagocytic cells by subverting their membrane repair process, which is dependent on membrane injury and cell signaling, intracellular calcium increase, and lysosome recruitment. Cells lacking lysosome-associated membrane proteins 1 and 2 (LAMP1 and LAMP2) are less permissive to parasite invasion but more prone to parasite intracellular multiplication. Several passages through a different intracellular environment can significantly change T. cruzi's gene expression profile. Here, we evaluated whether one single passage through LAMP-deficient (KO) or wild-type (WT) fibroblasts, thus different intracellular environments, could influence T. cruzi Y strain trypomastigotes' ability to invade L6 myoblasts and WT fibroblasts host cells. Parasites released from LAMP2 KO cells (TcY-L2-/-) showed higher invasion, calcium signaling, and membrane injury rates, for the assays in L6 myoblasts, when compared to those released from WT (TcY-WT) or LAMP1/2 KO cells (TcY-L1/2-/-). On the other hand, TcY-L1/2-/- showed higher invasion, calcium signaling, and cell membrane injury rates, for the assays in WT fibroblasts, compared to TcY-WT and TcY-L1/2-/-. Albeit TcY-WT presented an intermediary invasion and calcium signaling rates, compared to the others, in WT fibroblasts, they induced lower levels of injury, which reinforces that signals mediated by surface membrane protein interactions also have a significant contribution to trigger host cell calcium signals. These results clearly show that parasites released from WT or LAMP KO cells are distinct from each other. Additionally, these parasites' ability to invade the cell may be distinct depending on which cell type they interact with. Since these alterations most likely would reflect differences among parasite surface molecules, we also evaluated their proteome. We identified few protein complexes, membrane, and secreted proteins regulated in our dataset. Among those are some members of MASP, mucins, trans-sialidases, and gp63 proteins family, which are known to play an important role during parasite infection and could correlate to TcY-WT, TcY-L1/2-/-, and TcY-L2-/- biological behavior.
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Affiliation(s)
- Anny Carolline Silva Oliveira
- Department of Morphology, Biological Sciences Institute—ICB, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
- Protein Research Group, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Luisa Rezende
- Department of Morphology, Biological Sciences Institute—ICB, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Vladimir Gorshkov
- Protein Research Group, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Marcella Nunes Melo-Braga
- Department of Biochemistry and Immunology, Biological Sciences Institute—ICB, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Thiago Verano-Braga
- Hypertension Lab/Functional Proteomics Group, Department of Physiology and Biophysics, Biological Sciences Institute—ICB, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Weslley Fernandes-Braga
- Department of Biochemistry and Immunology, Biological Sciences Institute—ICB, Federal University of Minas Gerais (UFMG), Belo Horizonte, Minas Gerais, Brazil
| | - Jorge Luís de Melo Guadalupe
- Department of Morphology, Biological Sciences Institute—ICB, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Gustavo Batista de Menezes
- Department of Morphology, Biological Sciences Institute—ICB, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Frank Kjeldsen
- Protein Research Group, Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark
| | - Hélida Monteiro de Andrade
- Laboratory of Leishmanioses, Department of Parasitology, Biological Sciences Institute—ICB, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
| | - Luciana de Oliveira Andrade
- Department of Morphology, Biological Sciences Institute—ICB, Federal University of Minas Gerais (UFMG), Belo Horizonte, Brazil
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Jung J, Baek J, Tae K, Shin D, Han S, Yang W, Yu W, Jung SM, Park SH, Choi CY, Lee S. Structural mechanism for regulation of Rab7 by site-specific monoubiquitination. Int J Biol Macromol 2022; 194:347-357. [PMID: 34801583 DOI: 10.1016/j.ijbiomac.2021.11.074] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 11/08/2021] [Accepted: 11/11/2021] [Indexed: 11/30/2022]
Abstract
Site-specific ubiquitination can regulate the functions of Rab proteins in membrane trafficking. Previously we showed that site-specific monoubiquitination on Rab5 downregulates its function. Rab7 acts in the downstream of Rab5. Although site-specific ubiquitination of Rab7 can affect its function, it remains elusive how the ubiquitination is involved in modulation of the function of Rab7 at molecular level. Here, we report molecular basis for the regulation of Rab7 by site-specific monoubiquitination. Rab7 was predominantly monoubiquitinated at multiple sites in the membrane fraction of cultured cells. Two major ubiquitination sites (K191 and K194), identified by mutational analysis with single K mutants, were responsible for membrane localization of monoubiquitinated Rab7. Using small-angle X-ray scattering, we derived structural models of site-specifically monoubiquitinated Rab7 in solution. Structural analysis combined with molecular dynamics simulation corroborated that the ubiquitin moieties on K191 and K194 are key determinants for exclusion of Rab7 from the endosomal membrane. Ubiquitination on the two major sites apparently mitigated colocalization of Rab7 with ORF3a of SARS-CoV-2, potentially deterring the egression of SARS-CoV-2. Our results establish that the regulatory effects of a Rab protein through site-specific monoubiquitination are commonly observed among Rab GTPases while the ubiquitination sites differ in each Rab protein.
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Affiliation(s)
- Jaeeun Jung
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jiseok Baek
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Kun Tae
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Donghyuk Shin
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Seungsu Han
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Wonjin Yang
- Department of Brain and Cognitive Sciences, DGIST, Daegu 42988, Republic of Korea
| | - Wookyung Yu
- Department of Brain and Cognitive Sciences, DGIST, Daegu 42988, Republic of Korea
| | - Su Myung Jung
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Seok Hee Park
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Cheol Yong Choi
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sangho Lee
- Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Republic of Korea; Biomedical Institute for Convergence at SKKU, Sungkyunkwan University, Suwon 16419, Republic of Korea.
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Gao X, Yu M, Sun W, Han Y, Yang J, Lu X, Jin C, Wu S, Cai Y. Lanthanum chloride induces autophagy in primary cultured rat cortical neurons through Akt/mTOR and AMPK/mTOR signaling pathways. Food Chem Toxicol 2021; 158:112632. [PMID: 34688703 DOI: 10.1016/j.fct.2021.112632] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Revised: 09/30/2021] [Accepted: 10/19/2021] [Indexed: 11/29/2022]
Abstract
Autophagy is a lysosome dependent degradation pathway occurring in eukaryotic cells. Autophagy ensures balance and survival mechanism of cells during harmful stress. Excessive or weak autophagy leads to abnormal function and death in some cases. Lanthanum (La), a rare earth element (REE), damages the central nervous system (CNS) and promotes learning and memory dysfunction. However, underlying mechanism has not been fully elucidated. La induces oxidative stress, inhibits Nrf2/ARE and Akt/mTOR signaling pathways, and activates JNK/c-Jun and JNK/Foxo signaling pathways, resulting in abnormal induction of autophagy in rat hippocampus. In addition, La activates PINK1- Parkin signaling pathway and induces mitochondrial autophagy. However, the relationship between La and autophagy in rat neurons at the cellular level has not been explored previously. The aim of this study was to explore adverse effects of La. Primary culture of rat neurons were exposed to 0 mmol/L, 0.025 mmol/L, 0.05 mmol/L and 0.1 mmol/L lanthanum chloride (LaCl3). The results showed that La upregulates p-AMPK, inhibits levels of p-Akt and p-mTOR, increases levels of autophagy related proteins (Beclin1 and LC3B-II), and downregulates expression of p-Bcl-2 and p62. Upstream and downstream intervention agents of autophagy were used to detect autophagy flux to verify accuracy of our results. Electron microscopy results showed significant increase in the number of autophagosomes in LaCl3 exposed groups. These findings imply that LaCl3 inhibits Akt/mTOR signaling pathway and activates AMPK/mTOR signaling pathway, resulting in abnormal autophagy in primary cultured rat cortical neurons. In addition, LaCl3 induces neuronal damage through excessive autophagy.
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Affiliation(s)
- Xiang Gao
- Key Lab of Environment and Health, School of Public Health, Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221000, Jiangsu Province, People's Republic of China; Department of Biostatistics, School of Public Health, Xuzhou Medical University, No.209 Tongshan Road, Xuzhou, 221000, Jiangsu Province, People's Republic of China.
| | - Miao Yu
- Department of Toxicology, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning Province, People's Republic of China.
| | - Wenchang Sun
- Department of Toxicology, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning Province, People's Republic of China.
| | - Yarao Han
- Department of Toxicology, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning Province, People's Republic of China.
| | - Jinghua Yang
- Department of Toxicology, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning Province, People's Republic of China.
| | - Xiaobo Lu
- Department of Toxicology, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning Province, People's Republic of China.
| | - Cuihong Jin
- Department of Toxicology, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning Province, People's Republic of China.
| | - Shengwen Wu
- Department of Toxicology, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning Province, People's Republic of China.
| | - Yuan Cai
- Department of Toxicology, School of Public Health, China Medical University, No.77 Puhe Road, Shenyang North New Area, Shenyang, 110122, Liaoning Province, People's Republic of China.
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Cheng R, Xu H, Hong Y. miR221 regulates TGF-β1-induced HSC activation through inhibiting autophagy by directly targeting LAMP2. Mol Med Rep 2021; 24:777. [PMID: 34498712 PMCID: PMC8436230 DOI: 10.3892/mmr.2021.12417] [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: 06/04/2021] [Accepted: 08/19/2021] [Indexed: 12/23/2022] Open
Abstract
Liver fibrosis is a serious threat to human life and health. Activated hepatic stellate cells (HSCs) play a key role in the occurrence and development of liver fibrosis. Studies have reported that microRNAs (miRNAs/miRs) are involved in the pathological process of fibrosis, as well as its relevance in clinical diagnosis. However, the role of miR221 in hepatic fibrosis remains controversial. Remarkably, transforming growth factor‑β (TGF‑β1) caused HSC dysfunction in autophagic activation, characterized by an increase in P62 aggregation and LC3II expression. The present study aimed to determine whether autophagy regulates hepatic fibrosis by mediating HSC activation and explore the potential targets leading to the sequence of events associated with miR221. The expression of miR221 was quantified in a liver fibrosis model in vivo and in vitro, and its specific target gene lysosome‑associated membrane glycoprotein 2 (LAMP2) was predicted by bioinformatics. The results showed that the expression levels of collagen‑I (COL‑I) and α‑smooth muscle actin (α‑SMA) were increased in miR221‑overexpressing LX2 cells, while the autophagy inducer rapamycin reversed the inhibition of autophagic flux induced by miR221. Additionally, the overexpression of LAMP2 could significantly inhibit TGF‑β1‑induced COL‑I and α‑SMA expression, which was similar to the effect of the miR221 inhibitor on the regulation of TGF‑β1‑induced HSC activation. These results indicated that miR221 may regulate TGF‑β1‑induced HSC activation through inhibiting autolysosome function by directly targeting LAMP2. The molecular mechanism of miR221 in regulating TGF‑β1‑induced HSC activation may provide novel insight into therapies to ameliorate the pathological progression of liver fibrosis.
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Affiliation(s)
- Ran Cheng
- The First Department of Hepatobiliary Surgery, Tangshan Gongren Hospital, Tangshan, Hebei 063000, P.R. China
| | - Hao Xu
- Medical Insurance Office, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
| | - Yang Hong
- Department of Clinical Pharmacology, The Fourth Hospital of Hebei Medical University, Shijiazhuang, Hebei 050000, P.R. China
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Fernandes SA, Demetriades C. The Multifaceted Role of Nutrient Sensing and mTORC1 Signaling in Physiology and Aging. FRONTIERS IN AGING 2021; 2:707372. [PMID: 35822019 PMCID: PMC9261424 DOI: 10.3389/fragi.2021.707372] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2021] [Accepted: 08/12/2021] [Indexed: 01/10/2023]
Abstract
The mechanistic Target of Rapamycin (mTOR) is a growth-related kinase that, in the context of the mTOR complex 1 (mTORC1), touches upon most fundamental cellular processes. Consequently, its activity is a critical determinant for cellular and organismal physiology, while its dysregulation is commonly linked to human aging and age-related disease. Presumably the most important stimulus that regulates mTORC1 activity is nutrient sufficiency, whereby amino acids play a predominant role. In fact, mTORC1 functions as a molecular sensor for amino acids, linking the cellular demand to the nutritional supply. Notably, dietary restriction (DR), a nutritional regimen that has been shown to extend lifespan and improve healthspan in a broad spectrum of organisms, works via limiting nutrient uptake and changes in mTORC1 activity. Furthermore, pharmacological inhibition of mTORC1, using rapamycin or its analogs (rapalogs), can mimic the pro-longevity effects of DR. Conversely, nutritional amino acid overload has been tightly linked to aging and diseases, such as cancer, type 2 diabetes and obesity. Similar effects can also be recapitulated by mutations in upstream mTORC1 regulators, thus establishing a tight connection between mTORC1 signaling and aging. Although the role of growth factor signaling upstream of mTORC1 in aging has been investigated extensively, the involvement of signaling components participating in the nutrient sensing branch is less well understood. In this review, we provide a comprehensive overview of the molecular and cellular mechanisms that signal nutrient availability to mTORC1, and summarize the role that nutrients, nutrient sensors, and other components of the nutrient sensing machinery play in cellular and organismal aging.
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Affiliation(s)
- Stephanie A. Fernandes
- Max Planck Institute for Biology of Ageing (MPI-AGE), Cologne, Germany
- Cologne Graduate School for Ageing Research (CGA), Cologne, Germany
| | - Constantinos Demetriades
- Max Planck Institute for Biology of Ageing (MPI-AGE), Cologne, Germany
- Cologne Graduate School for Ageing Research (CGA), Cologne, Germany
- University of Cologne, Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
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Targeting Lysosomes to Reverse Hydroquinone-Induced Autophagy Defects and Oxidative Damage in Human Retinal Pigment Epithelial Cells. Int J Mol Sci 2021; 22:ijms22169042. [PMID: 34445748 PMCID: PMC8396439 DOI: 10.3390/ijms22169042] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2021] [Revised: 08/19/2021] [Accepted: 08/19/2021] [Indexed: 01/09/2023] Open
Abstract
In age-related macular degeneration (AMD), hydroquinone (HQ)-induced oxidative damage in retinal pigment epithelium (RPE) is believed to be an early event contributing to dysregulation of inflammatory cytokines and vascular endothelial growth factor (VEGF) homeostasis. However, the roles of antioxidant mechanisms, such as autophagy and the ubiquitin-proteasome system, in modulating HQ-induced oxidative damage in RPE is not well-understood. This study utilized an in-vitro AMD model involving the incubation of human RPE cells (ARPE-19) with HQ. In comparison to hydrogen peroxide (H2O2), HQ induced fewer reactive oxygen species (ROS) but more oxidative damage as characterized by protein carbonyl levels, mitochondrial dysfunction, and the loss of cell viability. HQ blocked the autophagy flux and increased proteasome activity, whereas H2O2 did the opposite. Moreover, the lysosomal membrane-stabilizing protein LAMP2 and cathepsin D levels declined with HQ exposure, suggesting loss of lysosomal membrane integrity and function. Accordingly, HQ induced lysosomal alkalization, thereby compromising the acidic pH needed for optimal lysosomal degradation. Pretreatment with MG132, a proteasome inhibitor and lysosomal stabilizer, upregulated LAMP2 and autophagy and prevented HQ-induced oxidative damage in wildtype RPE cells but not cells transfected with shRNA against ATG5. This study demonstrated that lysosomal dysfunction underlies autophagy defects and oxidative damage induced by HQ in human RPE cells and supports lysosomal stabilization with the proteasome inhibitor MG132 as a potential remedy for oxidative damage in RPE and AMD.
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Ge W, Yan ZH, Wang L, Tan SJ, Liu J, Reiter RJ, Luo SM, Sun QY, Shen W. A hypothetical role for autophagy during the day/night rhythm-regulated melatonin synthesis in the rat pineal gland. J Pineal Res 2021; 71:e12742. [PMID: 33960014 DOI: 10.1111/jpi.12742] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/16/2021] [Revised: 04/12/2021] [Accepted: 04/27/2021] [Indexed: 12/18/2022]
Abstract
Melatonin is a highly conserved molecule that regulates day/night rhythms; it is associated with sleep improvement, reactive oxygen species (ROS) scavenging, anti-aging effects, and seasonal and circadian rhythms and has been a hot topic of research for decades. Using single-cell RNA sequencing, a recent study describes a single-cell transcriptome atlas for the rat pineal gland. Based on a more comprehensive analysis of the retrieved data (Mays et al., PLoS One, 2018, 13, e0205883), results from the current study unveiled the underappreciated gene regulatory network behind different cell populations in the pineal gland. More importantly, our study here characterized, for the first time, the day/night activation of autophagy flux in the rat pineal gland, indicating a potential role of autophagy in regulating melatonin synthesis in the rat pineal gland. These findings emphasized a hypothetical role of day/night autophagy in linking the biological clock with melatonin synthesis. Furthermore, ultrastructure analysis of pinealocytes provided fascinating insights into differences in their intracellular structure between daytime and nighttime. In addition, we also provide a preliminary description of cell-cell communication in the rat pineal gland. In summary, the current study unveils the day/night regulation of autophagy in the rat pineal gland, raising a potential role of autophagy in day/night-regulated melatonin synthesis.
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Affiliation(s)
- Wei Ge
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Zi-Hui Yan
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Lu Wang
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Shao-Jing Tan
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
| | - Jing Liu
- Central Laboratory of Qingdao Agricultural University, Qingdao Agricultural University, Qingdao, China
| | - Russel J Reiter
- Department of Cell Systems and Anatomy, Long School of Medicine, UT Health, San Antonio, TX, USA
| | - Shi-Ming Luo
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
- State Key Laboratory of Stem Cell and Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Qing-Yuan Sun
- Fertility Preservation Lab, Reproductive Medicine Center, Guangdong Second Provincial General Hospital, Guangzhou, China
| | - Wei Shen
- Key Laboratory of Animal Reproduction and Germplasm Enhancement in Universities of Shandong, College of Life Sciences, Qingdao Agricultural University, Qingdao, China
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Guo W, Zhong W, Hao L, Dong H, Sun X, Yue R, Li T, Zhou Z. Fatty Acids Inhibit LAMP2-Mediated Autophagy Flux via Activating ER Stress Pathway in Alcohol-Related Liver Disease. Cell Mol Gastroenterol Hepatol 2021; 12:1599-1615. [PMID: 34284164 PMCID: PMC8536789 DOI: 10.1016/j.jcmgh.2021.07.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 06/30/2021] [Accepted: 07/01/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Alcohol-related liver disease (ALD) is characterized by accumulation of hepatic free fatty acids (FFAs) and triglyceride (TG)-enriched lipid droplets and cell death. The present study aimed to investigate how FFA or TG induces hepatocyte injury, thereby contributing to the development of ALD. METHODS Hepatocyte-specific DGAT1 knockout (DGAT1Δhep) mice and lysosome-associated membrane protein 2 (LAMP2) overexpression mice were generated and subjected to chronic alcohol feeding. Cell studies were conducted to define the causal role and underlying mechanism of FFA-induced hepatocellular injury. RESULTS Hepatocyte-specific DGAT1 deletion exacerbated alcohol-induced liver injury by increasing lipid accumulation and endoplasmic reticulum (ER) stress, reducing LAMP2 protein levels, and impairing autophagy function. Cell studies revealed that FFAs, rather than TG, induced ER stress via ATF4 activation, which, in turn, down-regulated LAMP2, thereby impairing autophagy flux. LAMP2 overexpression in the liver restored autophagy function and ameliorated alcohol-induced liver injury in mice. Reducing hepatic FFAs by peroxisome proliferator-activated receptor α activation attenuated ER stress, restored LAMP2 protein levels, and improved autophagy flux. In addition, suppression of LAMP2 and autophagy function was also detected in the liver of patients with severe alcoholic hepatitis. CONCLUSIONS This study demonstrates that accumulation of hepatic FFAs, rather than TG, plays a crucial role in the pathogenesis of ALD by suppressing LAMP2-autophagy flux pathway through ER stress signaling, which represents an important mechanism of FFA-induced hepatocellular injury in ALD.
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Affiliation(s)
- Wei Guo
- Center for Translational Biomedical Research, Kannapolis, North Carolina
| | - Wei Zhong
- Center for Translational Biomedical Research, Kannapolis, North Carolina,Department of Nutrition, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, North Carolina
| | - Liuyi Hao
- Center for Translational Biomedical Research, Kannapolis, North Carolina
| | - Haibo Dong
- Center for Translational Biomedical Research, Kannapolis, North Carolina
| | - Xinguo Sun
- Center for Translational Biomedical Research, Kannapolis, North Carolina
| | - Ruichao Yue
- Center for Translational Biomedical Research, Kannapolis, North Carolina
| | - Tianjiao Li
- Department of Nutrition, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, North Carolina
| | - Zhanxiang Zhou
- Center for Translational Biomedical Research, Kannapolis, North Carolina,Department of Nutrition, University of North Carolina at Greensboro, North Carolina Research Campus, Kannapolis, North Carolina,Correspondence Address correspondence to: Zhanxiang Zhou, PhD, Center for Translational Biomedical Research, University of North Carolina at Greensboro, 600 Laureate Way, Suite 2203, Kannapolis, North Carolina 28081.fax: (704) 250-5809.
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Bourgeois R, Bourgault J, Despres AA, Perrot N, Guertin J, Girard A, Mitchell PL, Gotti C, Bourassa S, Scipione CA, Gaudreault N, Boffa MB, Koschinsky ML, Pibarot P, Droit A, Thériault S, Mathieu P, Bossé Y, Arsenault BJ. Lipoprotein Proteomics and Aortic Valve Transcriptomics Identify Biological Pathways Linking Lipoprotein(a) Levels to Aortic Stenosis. Metabolites 2021; 11:metabo11070459. [PMID: 34357353 PMCID: PMC8307014 DOI: 10.3390/metabo11070459] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/13/2021] [Accepted: 07/14/2021] [Indexed: 12/17/2022] Open
Abstract
Lipoprotein(a) (Lp(a)) is one of the most important risk factors for the development of calcific aortic valve stenosis (CAVS). However, the mechanisms through which Lp(a) causes CAVS are currently unknown. Our objectives were to characterize the Lp(a) proteome and to identify proteins that may be differentially associated with Lp(a) in patients with versus without CAVS. Our second objective was to identify genes that may be differentially regulated by exposure to high versus low Lp(a) levels in explanted aortic valves from patients with CAVS. We isolated Lp(a) from the blood of 21 patients with CAVS and 22 volunteers and performed untargeted label-free analysis of the Lp(a) proteome. We also investigated the transcriptomic signature of calcified aortic valves from patients who underwent aortic valve replacement with high versus low Lp(a) levels (n = 118). Proteins involved in the protein activation cascade, platelet degranulation, leukocyte migration, and response to wounding may be associated with Lp(a) depending on CAVS status. The transcriptomic analysis identified genes involved in cardiac aging, chondrocyte development, and inflammation as potentially influenced by Lp(a). Our multi-omic analyses identified biological pathways through which Lp(a) may cause CAVS, as well as key molecular events that could be triggered by Lp(a) in CAVS development.
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Affiliation(s)
- Raphaëlle Bourgeois
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Jérôme Bourgault
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Audrey-Anne Despres
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Nicolas Perrot
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Jakie Guertin
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Arnaud Girard
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Patricia L. Mitchell
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
| | - Clarisse Gotti
- Proteomics Platform of the CHU de Québec, QC G1V 4G2, Canada; (C.G.); (S.B.); (A.D.)
| | - Sylvie Bourassa
- Proteomics Platform of the CHU de Québec, QC G1V 4G2, Canada; (C.G.); (S.B.); (A.D.)
| | - Corey A. Scipione
- Toronto General Research Institute, University Health Network, Toronto, ON M5G 2C4, Canada;
| | - Nathalie Gaudreault
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
| | - Michael B. Boffa
- Robarts Research Institute, London, ON N6A 5B7, Canada; (M.B.B.); (M.L.K.)
| | | | - Philippe Pibarot
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Arnaud Droit
- Proteomics Platform of the CHU de Québec, QC G1V 4G2, Canada; (C.G.); (S.B.); (A.D.)
- Centre de Recherche du CHU de Québec, Québec, QC G1V 4G2, Canada
| | - Sébastien Thériault
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Molecular Biology, Medical Biochemistry and Pathology, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Patrick Mathieu
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Surgery, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Yohan Bossé
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Molecular Medicine, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
| | - Benoit J. Arsenault
- Centre de Recherche de l’Institut Universitaire de Cardiologie et de Pneumologie de Québec, Québec, QC G1V 4G5, Canada; (R.B.); (J.B.); (A.-A.D.); (N.P.); (J.G.); (A.G.); (P.L.M.); (N.G.); (P.P.); (S.T.); (P.M.); (Y.B.)
- Department of Medicine, Faculty of Medicine, Université Laval, Québec, QC G1V 0A6, Canada
- Correspondence: ; Tel.: +1-418-656-8711 (ext. 3498)
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Manso AM, Hashem SI, Nelson BC, Gault E, Soto-Hermida A, Villarruel E, Brambatti M, Bogomolovas J, Bushway PJ, Chen C, Battiprolu P, Keravala A, Schwartz JD, Shah G, Gu Y, Dalton ND, Hammond K, Peterson K, Saftig P, Adler ED. Systemic AAV9.LAMP2B injection reverses metabolic and physiologic multiorgan dysfunction in a murine model of Danon disease. Sci Transl Med 2021; 12:12/535/eaax1744. [PMID: 32188720 DOI: 10.1126/scitranslmed.aax1744] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Revised: 08/18/2019] [Accepted: 02/20/2020] [Indexed: 12/27/2022]
Abstract
Danon disease (DD) is a rare X-linked autophagic vacuolar myopathy associated with multiorgan dysfunction, including the heart, skeletal muscle, and liver. There are no specific treatments, and most male patients die from advanced heart failure during the second or third decade of life. DD is caused by mutations in the lysosomal-associated membrane protein 2 (LAMP2) gene, a key mediator of autophagy. LAMP2 has three isoforms: LAMP2A, LAMP2B, and LAMP2C. LAMP2B is the predominant isoform expressed in cardiomyocytes. This study evaluates the efficacy of human LAMP2B gene transfer using a recombinant adeno-associated virus 9 carrying human LAMP2B (AAV9.LAMP2B) in a Lamp2 knockout (KO) mouse, a DD model. AAV9.LAMP2B was intravenously injected into 2- and 6-month-old Lamp2 KO male mice to assess efficacy in adolescent and adult phenotypes. Lamp2 KO mice receiving AAV9.LAMP2B demonstrated dose-dependent restoration of human LAMP2B protein in the heart, liver, and skeletal muscle tissue. Impaired autophagic flux, evidenced by increased LC3-II, was abrogated by LAMP2B gene transfer in all tissues in both cohorts. Cardiac function was also improved, and transaminases were reduced in AAV9.LAMP2B-treated KO mice, indicating favorable effects on the heart and liver. Survival was also higher in the older cohort receiving high vector doses. No anti-LAMP2 antibodies were detected in mice that received AAV9.LAMP2B. In summary, LAMP2B gene transfer improves metabolic and physiologic function in a DD murine model, suggesting that a similar therapeutic approach may be effective for treating patients with this highly morbid disease.
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Affiliation(s)
- Ana Maria Manso
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Sherin I Hashem
- Department of Pathology, UC San Diego, San Diego, CA 92037, USA
| | - Bradley C Nelson
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Emily Gault
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Angel Soto-Hermida
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Elizza Villarruel
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Michela Brambatti
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Julius Bogomolovas
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Paul J Bushway
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Chao Chen
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | | | | | | | - Gaurav Shah
- Rocket Pharmaceuticals, New York, NY 10118, USA
| | - Yusu Gu
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Nancy D Dalton
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Kirk Hammond
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Kirk Peterson
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA
| | - Paul Saftig
- Biochemical Institute, Christian Albrechts-University, Kiel 24118, Germany
| | - Eric D Adler
- Division of Cardiology, Department of Medicine, UC San Diego, San Diego, CA 92037, USA.
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Repurposing Niclosamide for Targeting Pancreatic Cancer by Inhibiting Hh/Gli Non-Canonical Axis of Gsk3β. Cancers (Basel) 2021; 13:cancers13133105. [PMID: 34206370 PMCID: PMC8269055 DOI: 10.3390/cancers13133105] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2021] [Revised: 06/15/2021] [Accepted: 06/17/2021] [Indexed: 12/14/2022] Open
Abstract
Simple Summary The current obstacles for discovering new drugs for cancer therapy have necessitated the development of the alternative strategy of drug repurposing, the identification of new uses for approved or investigational drugs for new therapeutic purposes. Niclosamide (Nic) is a Food and Drug Administration (FDA)-approved anti-helminthic drug, reported to have anti-cancer effects, and is being assessed in various clinical trials. In the current study, we assessed the therapeutic efficacy of Nic on pancreatic cancer (PC) in vitro. Our results revealed mitochondrial stress and mTORC1-dependent autophagy as the predominant players of Nic-induced PC cell death. This study provided a novel mechanistic insight for anti-cancer efficacy of Nic by increasing p-Gsk3β that modulates molecular signaling(s), including inhibition of hedgehog (Hh) signaling-mediated cellular proliferation and increased apoptosis through mTORC1-dependent autophagy may prove helpful for the development of novel PC therapies. Abstract Niclosamide (Nic), an FDA-approved anthelmintic drug, is reported to have anti-cancer efficacy and is being assessed in clinical trials for various solid tumors. Based on its ability to target multiple signaling pathways, in the present study, we evaluated the therapeutic efficacy of Nic on pancreatic cancer (PC) in vitro. We observed an anti-cancerous effect of this drug as shown by the G0/G1 phase cell cycle arrest, inhibition of PC cell viability, colony formation, and migration. Our results revealed the involvement of mitochondrial stress and mTORC1-dependent autophagy as the predominant players of Nic-induced PC cell death. Significant reduction of Nic-induced reactive oxygen species (ROS) and cell death in the presence of a selective autophagy inhibitor spautin-1 demonstrated autophagy as a major contributor to Nic-mediated cell death. Mechanistically, Nic inhibited the interaction between BCL2 and Beclin-1 that supported the crosstalk of autophagy and apoptosis. Further, Nic treatment resulted in Gsk3β inactivation by phosphorylating its Ser-9 residue leading to upregulation of Sufu and Gli3, thereby negatively impacting hedgehog signaling and cell survival. Nic induced autophagic cell death, and p-Gsk3b mediated Sufu/Gli3 cascade was further confirmed by Gsk3β activator, LY-294002, by rescuing inactivation of Hh signaling upon Nic treatment. These results suggested the involvement of a non-canonical mechanism of Hh signaling, where p-Gsk3β acts as a negative regulator of Hh/Gli1 cascade and a positive regulator of autophagy-mediated cell death. Overall, this study established the therapeutic efficacy of Nic for PC by targeting p-Gsk3β mediated non-canonical Hh signaling and promoting mTORC1-dependent autophagy and cell death.
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Ruano D. Proteostasis Dysfunction in Aged Mammalian Cells. The Stressful Role of Inflammation. Front Mol Biosci 2021; 8:658742. [PMID: 34222330 PMCID: PMC8245766 DOI: 10.3389/fmolb.2021.658742] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2021] [Accepted: 05/28/2021] [Indexed: 12/15/2022] Open
Abstract
Aging is a biological and multifactorial process characterized by a progressive and irreversible deterioration of the physiological functions leading to a progressive increase in morbidity. In the next decades, the world population is expected to reach ten billion, and globally, elderly people over 80 are projected to triple in 2050. Consequently, it is also expected an increase in the incidence of age-related pathologies such as cancer, diabetes, or neurodegenerative disorders. Disturbance of cellular protein homeostasis (proteostasis) is a hallmark of normal aging that increases cell vulnerability and might be involved in the etiology of several age-related diseases. This review will focus on the molecular alterations occurring during normal aging in the most relevant protein quality control systems such as molecular chaperones, the UPS, and the ALS. Also, alterations in their functional cooperation will be analyzed. Finally, the role of inflammation, as a synergistic negative factor of the protein quality control systems during normal aging, will also be addressed. A better comprehension of the age-dependent modifications affecting the cellular proteostasis, as well as the knowledge of the mechanisms underlying these alterations, might be very helpful to identify relevant risk factors that could be responsible for or contribute to cell deterioration, a fundamental question still pending in biomedicine.
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Affiliation(s)
- Diego Ruano
- Instituto de Biomedicina de Sevilla (IBiS), Hospital Universitario Virgen del Rocío/Consejo Superior de Investigaciones Científicas/Universidad de Sevilla, Sevilla, Spain.,Departamento de Bioquímica y Biología Molecular, Facultad de Farmacia, Universidad de Sevilla, Sevilla, Spain
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Del Favero G, Zeugswetter M, Kiss E, Marko D. Endoplasmic Reticulum Adaptation and Autophagic Competence Shape Response to Fluid Shear Stress in T24 Bladder Cancer Cells. Front Pharmacol 2021; 12:647350. [PMID: 34012396 PMCID: PMC8126838 DOI: 10.3389/fphar.2021.647350] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 02/17/2021] [Indexed: 12/26/2022] Open
Abstract
Accumulation of xenobiotics and waste metabolites in the urinary bladder is constantly accompanied by shear stress originating from the movement of the luminal fluids. Hence, both chemical and physical cues constantly modulate the cellular response in health and disease. In line, bladder cells have to maintain elevated mechanosensory competence together with chemical stress response adaptation potential. However, much of the molecular mechanisms sustaining this plasticity is currently unknown. Taking this as a starting point, we investigated the response of T24 urinary bladder cancer cells to shear stress comparing morphology to functional performance. T24 cells responded to the shear stress protocol (flow speed of 0.03 ml/min, 3 h) by significantly increasing their surface area. When exposed to deoxynivalenol-3-sulfate (DON-3-Sulf), bladder cells increased this response in a concentration-dependent manner (0.1-1 µM). DON-3-Sulf is a urinary metabolite of a very common food contaminant mycotoxin (deoxynivalenol, DON) and was already described to enhance proliferation of cancer cells. Incubation with DON-3-Sulf also caused the enlargement of the endoplasmic reticulum (ER), decreased the lysosomal movement, and increased the formation of actin stress fibers. Similar remodeling of the endoplasmic reticulum and area spread after shear stress were observed upon incubation with the autophagy activator rapamycin (1-100 nM). Performance of experiments in the presence of chloroquine (chloroquine, 30 μM) further contributed to shed light on the mechanistic link between adaptation to the biomechanical stimulation and ER stress response. At the molecular level, we observed that ER reshaping was linked to actin organization, with the two components mutually regulating each other. Indeed, we identified in the ER stress-cytoskeletal rearrangement an important axis defining the physical/chemical response potential of bladder cells and created a workflow for further investigation of urinary metabolites, food constituents, and contaminants, as well as for pharmacological profiling.
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Affiliation(s)
- Giorgia Del Favero
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Vienna, Austria.,Core Facility Multimodal Imaging, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Michael Zeugswetter
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Endre Kiss
- Core Facility Multimodal Imaging, Faculty of Chemistry, University of Vienna, Vienna, Austria
| | - Doris Marko
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Vienna, Austria
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Wang XY, Wang B, Zhu XL, Ma ZL, Liu Y, Lei CH, Yang QL, Hu D, Zhao XL, Liu ZR, Liu LW. Clinical and molecular characterization of seven patients with Danon disease. Exp Ther Med 2021; 21:395. [PMID: 33680117 PMCID: PMC7918051 DOI: 10.3892/etm.2021.9826] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Accepted: 07/27/2020] [Indexed: 01/08/2023] Open
Abstract
Danon disease is an X-linked glycogen storage disease characterized by skeletal myopathy, cardiomyopathy and intellectual impairment. It is caused by a loss-of-function mutation in the lysosome-associated membrane protein-2 (LAMP2) gene. In the present study, exon and boarding intron analysis of 96 cardio disease-associated genes was performed in 770 patients with hypertrophic cardiomyopathy (HCM) using second-generation sequencing. Next, the identified mutations were confirmed in family members of the patients and 300 healthy controls. Detailed clinical, electrocardiographic (ECG) and echocardiographic findings were recorded. A pathogenic mutation in LAMP2 was identified in 7 patients who phenotypically presented with HCM. A total of four patients had a fragmented QRS complex (fQRS) on surface ECG. In addition, two patients presented with ventricular preexcitation with a short PR interval. Compared with the patients with protein kinase AMP-activated non-catalytic subunit γ2 syndrome and Fabry disease, the 7 patients with Danon disease presented at an earlier age, had a smaller left atrial size, a thinner maximal left ventricular wall thickness and a lower probability of pacemaker implantation. Compared with 12 sex- and age-matched patients with sarcomere-protein mutations, the 4 patients with Danon disease had a lower left ventricular outflow tract gradient and worse diastolic function. The present study provided a comprehensive comparison of different pathologies presenting with HCM and reported on features of early-onset Danon disease, including the characteristic preexcitation and fQRS on ECG. This may provide valuable information that may be utilized for the early diagnosis and treatment of patients with Danon disease. The present study was registered as a clinical trial with ClinicalTrials.gov (Sep. 2, 2016; registry no. NCT02888132).
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Affiliation(s)
- Xuan-Ying Wang
- Department of Ultrasound, Xijing Hypertrophic Cardiomyopathy Center, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Bo Wang
- Department of Ultrasound, Xijing Hypertrophic Cardiomyopathy Center, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Xiao-Li Zhu
- Department of Ultrasound, Xijing Hypertrophic Cardiomyopathy Center, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Zhi-Ling Ma
- Department of Cardiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Ying Liu
- Department of Radiology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Chang-Hui Lei
- Department of Ultrasound, Xijing Hypertrophic Cardiomyopathy Center, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Qian-Li Yang
- Department of Ultrasound, Xijing Hypertrophic Cardiomyopathy Center, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Dan Hu
- Department of Cardiology and Cardiovascular Research Institute, Renmin Hospital of Wuhan University, Wuhan, Hubei 430060, P.R. China
- Hubei Key Laboratory of Cardiology, Wuhan, Hubei 430060, P.R. China
| | - Xue-Li Zhao
- Department of Ultrasound, Xijing Hypertrophic Cardiomyopathy Center, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Zhi-Rong Liu
- Department of Neurology, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
| | - Li-Wen Liu
- Department of Ultrasound, Xijing Hypertrophic Cardiomyopathy Center, Xijing Hospital, Fourth Military Medical University, Xi'an, Shaanxi 710032, P.R. China
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