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Wang ML, Zhang YJ, He DL, Li T, Zhao MM, Zhao LM. Inhibition of PLA2G4A attenuated valproic acid- induced lysosomal membrane permeabilization and restored impaired autophagic flux: Implications for hepatotoxicity. Biochem Pharmacol 2024; 227:116438. [PMID: 39025409 DOI: 10.1016/j.bcp.2024.116438] [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: 02/18/2024] [Revised: 07/05/2024] [Accepted: 07/15/2024] [Indexed: 07/20/2024]
Abstract
Valproic acid (VPA) has broad efficacy against several seizures but causes liver injury limiting its prolonged clinical use. Some studies have demonstrated that VPA-induced hepatotoxicity is characterized by microvesicular hepatic steatosis. However, novel detailed mechanisms to explain VPA-induced hepatic steatosis and experimentally rigorously validated protective agents are still lacking. In this study, 8-week-old C57BL/6J mice were gavaged with VPA (500 mg/kg/d) for 4 weeks to establish an in vivo model of VPA-induced chronic liver injury. Quantitative proteomic and non-targeted lipidomic analyses were performed to explore the underlying mechanisms of VPA-induced hepatotoxicity. As a result, VPA-induced hepatotoxicity is associated with impaired autophagic flux, which is attributed to lysosomal dysfunction. Further studies revealed that VPA-induced lysosomal membrane permeabilization (LMP), allows soluble lysosomal enzymes to leak into the cytosol, which subsequently led to impaired lysosomal acidification. A lower abundance of glycerophospholipids and an increased abundance of lysophospholipids in liver tissues of mice in the VPA group strongly indicated that VPA-induced LMP may be mediated by the activation of phospholipase PLA2G4A. Metformin (Met) acted as a potential protective agent attenuating VPA-induced liver dysfunction and excessive lipid accumulation. Molecular docking and cellular thermal shift assays demonstrated that Met inhibited the activity of PLA2G4A by directly binding to it, thereby ameliorating VPA-induced LMP and autophagic flux impairment. In conclusion, this study highlights the therapeutic potential of targeting PLA2G4A-mediated lysosomal dysfunction in VPA-induced hepatotoxicity.
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Affiliation(s)
- Ming-Lu Wang
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Yu-Jia Zhang
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Da-Long He
- Institute of Health Sciences, Key Laboratory of Medical Cell Biology of Ministry of Education, China Medical University, Shenyang, Liaoning, China
| | - Tong Li
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Ming-Ming Zhao
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China
| | - Li-Mei Zhao
- Department of Pharmacy, Shengjing Hospital of China Medical University, Shenyang, Liaoning, China.
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2
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Wu Y, Li L, Tang L, Peijnenburg W, Zhang H, Xie D, Geng R, Zheng T, Bi L, Wei X, Chae HJ, Wang L, Zhao L, Li B, Zheng Q. Ototoxicity of polystyrene nanoplastics in mice, HEI-OC1 cells and zebrafish. Front Mol Neurosci 2024; 17:1345536. [PMID: 38440220 PMCID: PMC10909942 DOI: 10.3389/fnmol.2024.1345536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 01/17/2024] [Indexed: 03/06/2024] Open
Abstract
Polystyrene nanoplastics are a novel class of pollutants. They are easily absorbed by living organisms, and their potential toxicity has raised concerns. However, the impact of polystyrene nanoplastics on auditory organs remains unknown. Here, our results showed that polystyrene nanoplastics entered the cochlea of mice, HEI-OC1 cells, and lateral line hair cells of zebrafish, causing cellular injury and increasing apoptosis. Additionally, we found that exposure to polystyrene nanoplastics resulted in a significant elevation in the auditory brainstem response thresholds, a loss of auditory sensory hair cells, stereocilia degeneration and a decrease in expression of Claudin-5 and Occludin proteins at the blood-lymphatic barrier in mice. We also observed a significant decrease in the acoustic alarm response of zebrafish after exposure to polystyrene nanoplastics. Mechanistic analysis revealed that polystyrene nanoplastics induced up-regulation of the Nrf2/HO-1 pathway, increased levels of malondialdehyde, and decreased superoxide dismutase and catalase levels in cochlea and HEI-OC1 cells. Furthermore, we observed that the expression of ferroptosis-related indicators GPX4 and SLC7A11 decreased as well as increased expression of ACLS4 in cochlea and HEI-OC1 cells. This study also revealed that polystyrene nanoplastics exposure led to increased expression of the inflammatory factors TNF-α, IL-1β and COX2 in cochlea and HEI-OC1 cells. Further research found that the cell apoptosis, ferroptosis and inflammatory reactions induced by polystyrene nanoplastics in HEI-OC1 cells was reversed through the pretreatment with N-acetylcysteine, a reactive oxygen species inhibitor. Overall, our study first discovered and systematically revealed the ototoxicity of polystyrene nanoplastics and its underlying mechanism.
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Affiliation(s)
- Yuancheng Wu
- Hearing and Speech Rehabilitation Institute, Binzhou Medical University, Yantai, China
| | - Lianzhen Li
- College of Environmental Sciences and Engineering, Qingdao University, Qingdao, China
| | - Lihuan Tang
- Hearing and Speech Rehabilitation Institute, Binzhou Medical University, Yantai, China
| | - Willie Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, Leiden, Netherlands
- National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, Bilthoven, Netherlands
| | - Huangruici Zhang
- Hearing and Speech Rehabilitation Institute, Binzhou Medical University, Yantai, China
| | - Daoli Xie
- Hearing and Speech Rehabilitation Institute, Binzhou Medical University, Yantai, China
| | - Ruishuang Geng
- Hearing and Speech Rehabilitation Institute, Binzhou Medical University, Yantai, China
| | - Tihua Zheng
- Hearing and Speech Rehabilitation Institute, Binzhou Medical University, Yantai, China
| | - Liyan Bi
- Hearing and Speech Rehabilitation Institute, Binzhou Medical University, Yantai, China
| | - Xiaodan Wei
- Department of Pathology, School of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Han-jung Chae
- School of Pharmacy, Jeonbuk National University, Jeonju, Republic of Korea
| | - Lan Wang
- Hearing and Speech Rehabilitation Institute, Binzhou Medical University, Yantai, China
| | - Li Zhao
- Hearing and Speech Rehabilitation Institute, Binzhou Medical University, Yantai, China
| | - Bo Li
- Hearing and Speech Rehabilitation Institute, Binzhou Medical University, Yantai, China
| | - Qingyin Zheng
- Department of Otolaryngology-Head and Neck Surgery, Case Western Reserve University, Cleveland, OH, United States
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3
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Manfredi GF, Celsa C, John C, Jones C, Acuti N, Scheiner B, Fulgenzi CAM, Korolewicz J, Pinter M, Gennari A, Mauri FA, Pirisi M, Minisini R, Vincenzi F, Burlone M, Rigamonti C, Donadon M, Cabibbo G, D’Alessio A, Pinato DJ. Mechanisms of Resistance to Immunotherapy in Hepatocellular Carcinoma. J Hepatocell Carcinoma 2023; 10:1955-1971. [PMID: 37941812 PMCID: PMC10629523 DOI: 10.2147/jhc.s291553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2023] [Accepted: 10/24/2023] [Indexed: 11/10/2023] Open
Abstract
Systemic treatment for advanced hepatocellular carcinoma (HCC) has been revolutionized over the last few years following the approval of immune checkpoint inhibitors (ICI). Despite the promising survival extension seen with ICI combination regimens, responses are not universally seen and the optimal partner for programmed cell death 1 pathway inhibitors remains to be identified. Even fewer encouraging results have been demonstrated with ICI used for monotherapy. Several mechanisms of resistance have been described so far, involving characteristics of cancer cells (intrinsic mechanisms) and of the surrounding tumor microenvironment (extrinsic mechanisms). Factors related to therapy may also contribute to the development of resistance. Increasing research efforts are being dedicated to the discovery of novel approaches and targets to overcome resistance, some of which may be introduced into clinic in the future. Herein we describe a selection of resistance mechanisms that have been involved in impairing response to ICI and propose potential therapeutic approaches to overcome resistance.
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Affiliation(s)
- Giulia Francesca Manfredi
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK
- Department of Translational Medicine, Università Del Piemonte Orientale, Novara, Italy
| | - Ciro Celsa
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK
- Section of Gastroenterology & Hepatology, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, PROMISE, University of Palermo, Palermo, Italy
- Department of Surgical, Oncological and Oral Sciences (Di.chir.on.s.), University of Palermo, Palermo, Italy
| | - Chloe John
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK
| | - Charlotte Jones
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK
| | - Nicole Acuti
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK
| | - Bernhard Scheiner
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Claudia Angela Maria Fulgenzi
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK
- Department of Medical Oncology, University Campus Bio-Medico of Rome, Rome, Italy
| | - James Korolewicz
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK
| | - Matthias Pinter
- Division of Gastroenterology and Hepatology, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Alessandra Gennari
- Division of Oncology, Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - Francesco A Mauri
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK
| | - Mario Pirisi
- Department of Translational Medicine, Università Del Piemonte Orientale, Novara, Italy
- Division of Internal Medicine, AOU Maggiore della Carità, Novara, Italy
| | - Rosalba Minisini
- Department of Translational Medicine, Università Del Piemonte Orientale, Novara, Italy
| | - Federica Vincenzi
- Department of Translational Medicine, Università Del Piemonte Orientale, Novara, Italy
| | - Michela Burlone
- Division of Internal Medicine, AOU Maggiore della Carità, Novara, Italy
| | - Cristina Rigamonti
- Department of Translational Medicine, Università Del Piemonte Orientale, Novara, Italy
- Division of Internal Medicine, AOU Maggiore della Carità, Novara, Italy
| | - Matteo Donadon
- Department of Health Science, Università Del Piemonte Orientale, Novara, Italy
- Department of Surgery, University Maggiore Hospital della Carità, Novara, Italy
| | - Giuseppe Cabibbo
- Section of Gastroenterology & Hepatology, Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties, PROMISE, University of Palermo, Palermo, Italy
| | - Antonio D’Alessio
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK
- Division of Oncology, Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
| | - David James Pinato
- Department of Surgery & Cancer, Imperial College London, Hammersmith Hospital, London, UK
- Division of Oncology, Department of Translational Medicine, University of Piemonte Orientale, Novara, Italy
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4
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Mastrapasqua M, Rossi R, De Cosmo L, Resta A, Errede M, Bizzoca A, Zampatti S, Resta N, Giardina E, Ruggieri M, Virgintino D, Annese T, Laforgia N, Girolamo F. Autophagy increase in Merosin-Deficient Congenital Muscular Dystrophy type 1A. Eur J Transl Myol 2023; 33:11501. [PMID: 37522802 PMCID: PMC10583158 DOI: 10.4081/ejtm.2023.11501] [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: 05/31/2023] [Accepted: 06/15/2023] [Indexed: 08/01/2023] Open
Abstract
The autophagy process recycles dysfunctional cellular components and protein aggregates by sequestering them in autophagosomes directed to lysosomes for enzymatic degradation. A basal level of autophagy is essential for skeletal muscle maintenance. Increased autophagy occurs in several forms of muscular dystrophy and in the merosin-deficient congenital muscular dystrophy 1A mouse model (dy3k/dy3k) lacking the laminin-α2 chain. This pilot study aimed to compare autophagy marker expression and autophagosomes presence using light and electron microscopes and western blotting in diagnostic muscle biopsies from newborns affected by different congenital muscular myopathies and dystrophies. Morphological examination showed dystrophic muscle features, predominance of type 2A myofibers, accumulation of autophagosomes in the subsarcolemmal areas, increased number of autophagosomes overexpressing LC3b, Beclin-1 and ATG5, in the merosin-deficient newborn suggesting an increased autophagy. In Duchenne muscular dystrophy, nemaline myopathy, and spinal muscular atrophy the predominant accumulation of p62+ puncta rather suggests an autophagy impairment.
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Affiliation(s)
- Mariangela Mastrapasqua
- Department of Translational Biomedicine and Neuroscience (DiBraiN), University of Bari 'Aldo Moro', Bari.
| | - Roberta Rossi
- Section of Pathology, Department of Precision and Regenerative Medicine and Jonian Area (DiMePRe-J), University of Bari "Aldo Moro", Bari.
| | - Lucrezia De Cosmo
- Neonatology and Neonatal Intensive Care Unit, Ospedale SS. Annunziata, Taranto.
| | - Annalisa Resta
- Neonatology and Neonatal Intensive Care Unit, Ospedale Miulli, Acquaviva delle Fonti.
| | - Mariella Errede
- Department of Translational Biomedicine and Neuroscience (DiBraiN), University of Bari 'Aldo Moro', Bari.
| | - Antonella Bizzoca
- Department of Translational Biomedicine and Neuroscience (DiBraiN), University of Bari 'Aldo Moro', Bari.
| | - Stefania Zampatti
- Laboratory of Genomic Medicine - Santa Lucia Foundation - IRCCS, Roma.
| | - Nicoletta Resta
- Medical Genetics Unit, Department of Precision and Regenerative Medicine and Ionian Area (DiMePRe-J), University of Bari "Aldo Moro", Bari.
| | - Emiliano Giardina
- Laboratory of Genomic Medicine - Santa Lucia Foundation - IRCCS, Roma.
| | - Maddalena Ruggieri
- Department of Translational Biomedicine and Neuroscience (DiBraiN), University of Bari 'Aldo Moro', Bari.
| | - Daniela Virgintino
- Department of Translational Biomedicine and Neuroscience (DiBraiN), University of Bari 'Aldo Moro', Bari.
| | - Tiziana Annese
- Department of Translational Biomedicine and Neuroscience (DiBraiN), University of Bari 'Aldo Moro', Bari, Italy; Department of Medicine and Surgery, Libera Università del Mediterraneo (LUM) Giuseppe Degennaro University, Bari.
| | - Nicola Laforgia
- Neonatology and Neonatal Intensive Care Unit, Department of Interdisciplinary Medicine (DIM), University of Bari "Aldo Moro", Bari.
| | - Francesco Girolamo
- Department of Translational Biomedicine and Neuroscience (DiBraiN), University of Bari 'Aldo Moro', Bari.
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5
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Degranulation of Murine Resident Cochlear Mast Cells: A Possible Factor Contributing to Cisplatin-Induced Ototoxicity and Neurotoxicity. Int J Mol Sci 2023; 24:ijms24054620. [PMID: 36902051 PMCID: PMC10003316 DOI: 10.3390/ijms24054620] [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: 01/17/2023] [Revised: 02/17/2023] [Accepted: 02/22/2023] [Indexed: 03/04/2023] Open
Abstract
Permanent hearing loss is one of cisplatin's adverse effects, affecting 30-60% of cancer patients treated with that drug. Our research group recently identified resident mast cells in rodents' cochleae and observed that the number of mast cells changed upon adding cisplatin to cochlear explants. Here, we followed that observation and found that the murine cochlear mast cells degranulate in response to cisplatin and that the mast cell stabilizer cromoglicic acid (cromolyn) inhibits this process. Additionally, cromolyn significantly prevented cisplatin-induced loss of auditory hair cells and spiral ganglion neurons. Our study provides the first evidence for the possible mast cell participation in cisplatin-induced damage to the inner ear.
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6
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Sun Y, Zou S, He Z, Chen X. The role of autophagy and ferroptosis in sensorineural hearing loss. Front Neurosci 2022; 16:1068611. [PMID: 36578828 PMCID: PMC9791179 DOI: 10.3389/fnins.2022.1068611] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2022] [Accepted: 11/17/2022] [Indexed: 12/14/2022] Open
Abstract
Hearing loss has become a common sensory defect in humans. Because of the limited regenerative ability of mammalian cochlear hair cells (HCs), HC damage (caused by ototoxic drugs, aging, and noise) is the main risk factor of hearing loss. However, how HCs can be protected from these risk factors remains to be investigated. Autophagy is a process by which damaged cytoplasmic components are sequestered into lysosomes for degradation. Ferroptosis is a novel form of non-apoptotic regulated cell death involving intracellular iron overloading and iron-dependent lipid peroxide accumulation. Recent studies have confirmed that autophagy is associated with ferroptosis, and their crosstalk may be the potential therapeutic target for hearing loss. In this review, we provide an overview of the mechanisms of ferroptosis and autophagy as well as their relationship with HC damage, which may provide insights for a new future in the protection of HCs.
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7
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Wan H, Zhang Y, Hua Q. Cellular autophagy, the compelling roles in hearing function and dysfunction. Front Cell Neurosci 2022; 16:966202. [PMID: 36246522 PMCID: PMC9561951 DOI: 10.3389/fncel.2022.966202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Accepted: 09/14/2022] [Indexed: 11/21/2022] Open
Abstract
Sensorineural hearing loss (SNHL) is currently a major health issue. As one of the most common neurodegenerative diseases, SNHL is associated with the degradation of hair cells (HCs), spiral ganglion neurons (SGNs), the stria vascularis, supporting cells and central auditory system cells. Autophagy is a highly integrated cellular system that eliminates impaired components and replenishes energy to benefit cellular homeostasis. Etiological links between autophagy alterations and neurodegenerative diseases, such as SNHL, have been established. The hearing pathway is complex and depends on the comprehensive functions of many types of tissues and cells in auditory system. In this review, we discuss the roles of autophagy in promoting and inhibiting hearing, paying particular attention to specific cells in the auditory system, as discerned through research. Hence, our review provides enlightening ideas for the role of autophagy in hearing development and impairment.
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Affiliation(s)
- Huanzhi Wan
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
- Research Institute of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Yuanyuan Zhang
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
- Research Institute of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
- *Correspondence: Yuanyuan Zhang,
| | - Qingquan Hua
- Department of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
- Research Institute of Otolaryngology-Head and Neck Surgery, Renmin Hospital of Wuhan University, Wuhan, China
- Qingquan Hua,
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8
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Zhang X, Li X, Yu Y, Zhang X, Wang X, Zhang N, Chen M, Gong P, Li J. Giardia lamblia
regulates the production of proinflammatory cytokines through activating the NOD2–Rip2–ROS signaling pathway in mouse macrophages. Immunol Cell Biol 2022; 100:440-452. [DOI: 10.1111/imcb.12550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2021] [Revised: 02/17/2022] [Accepted: 03/31/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Xu Zhang
- Key Laboratory of Zoonosis Research Ministry of Education College of Veterinary Medicine Jilin University 5333 Xian Road Changchun Jilin 130062 China
| | - Xin Li
- Key Laboratory of Zoonosis Research Ministry of Education College of Veterinary Medicine Jilin University 5333 Xian Road Changchun Jilin 130062 China
| | - Yanhui Yu
- The Second Hospital of Jilin University Changchun Jilin 130021 China
| | - Xichen Zhang
- Key Laboratory of Zoonosis Research Ministry of Education College of Veterinary Medicine Jilin University 5333 Xian Road Changchun Jilin 130062 China
| | - Xiaocen Wang
- Key Laboratory of Zoonosis Research Ministry of Education College of Veterinary Medicine Jilin University 5333 Xian Road Changchun Jilin 130062 China
| | - Nan Zhang
- Key Laboratory of Zoonosis Research Ministry of Education College of Veterinary Medicine Jilin University 5333 Xian Road Changchun Jilin 130062 China
| | - Mengge Chen
- Key Laboratory of Zoonosis Research Ministry of Education College of Veterinary Medicine Jilin University 5333 Xian Road Changchun Jilin 130062 China
| | - Pengtao Gong
- Key Laboratory of Zoonosis Research Ministry of Education College of Veterinary Medicine Jilin University 5333 Xian Road Changchun Jilin 130062 China
| | - Jianhua Li
- Key Laboratory of Zoonosis Research Ministry of Education College of Veterinary Medicine Jilin University 5333 Xian Road Changchun Jilin 130062 China
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9
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Yan B, Xie D, Wu Y, Wang S, Zhang X, Zhao T, Liu L, Ma P, Li G, Yang Y, Zhao Y, Zheng T, Geng R, Li B, Zheng Q. Ferroptosis is involved in PGPS-induced otitis media in C57BL/6 mice. Cell Death Discov 2022; 8:217. [PMID: 35449198 PMCID: PMC9023543 DOI: 10.1038/s41420-022-01025-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2021] [Revised: 04/05/2022] [Accepted: 04/08/2022] [Indexed: 11/24/2022] Open
Abstract
Otitis media (OM) is a common disease that can cause hearing loss in children. Currently, the main clinical treatment for OM is antibiotics, but the overuse of antibiotics might lead to bacterial resistance, which is a worldwide public health challenge. Studying the pathogenesis of OM will help us develop new effective treatments. Ferroptosis is one type of programmed cell death characterized by the occurrence of lipid peroxidation driven by iron ions. Many studies have shown that ferroptosis is associated with infectious diseases. It is presently unclear whether ferroptosis is involved in the pathogenesis of OM. In this study, we explored the relationship between ferroptosis and OM by PGPS-induced OM in C57BL/6 mice and treating the induced OM with ferroptosis inhibitors deferoxamine (DFO), Ferrostatin-1 (Fer-1), and Liperoxstatin-1 (Lip-1). We examined the expression of ferroptosis-related proteins acyl-CoA synthetase long chain family member 4 (ACSL4) and prostaglandin-endoperoxide synthase 2 (Cox2), glutathione peroxidase 4 (GPX4) protein as well as lipid peroxidation markers 4-hydroxynonenal (4-HNE) and malondialdehyde (MDA). The results showed that in PGPS-induced OM model mice, several ferroptosis-related proteins including ACSL4 and Cox2 were up-regulated compared to mice treated with saline. Meanwhile, a ferroptosis-related protein GPX4 was down-regulated upon PGPS treatment. The DFO treatment in PGPS-inoculated mice effectively inhibited the development of OM. The inhibitors treatment caused a significant decrease in the expression of ACSL4, Cox2, 4 HNE, MDA, reduction in free iron. Meanwhile, the ferroptosis inhibitors treatment caused increase in the expression of inflammation-related factors tumor necrosis factor-α (TNF-α) and antioxidant protein GPX4. Our results suggest that there is a crosstalk between ferroptosis signaling pathway and the pathogenesis of OM. Ferroptosis inhibition can alleviate PGPS-induced OM.
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Affiliation(s)
- Bin Yan
- Hearing and Speech Rehabilitation Institute, College of Special Education, Binzhou Medical University, Yantai, China
- Rehabilitation Medicine & Physical Therapy, School of Rehabilitation Medicine, Binzhou Medical University, Yantai, China
| | - Daoli Xie
- Hearing and Speech Rehabilitation Institute, College of Special Education, Binzhou Medical University, Yantai, China
| | - Yuancheng Wu
- Hearing and Speech Rehabilitation Institute, College of Special Education, Binzhou Medical University, Yantai, China
| | - Shuli Wang
- Hearing and Speech Rehabilitation Institute, College of Special Education, Binzhou Medical University, Yantai, China
| | - Xiaolin Zhang
- Department of Otolaryngology/Head and Neck Surgery, Institute of Otolaryngology, Affiliated Hospital of Binzhou Medical University, Binzhou, China
| | - Tong Zhao
- Hearing and Speech Rehabilitation Institute, College of Special Education, Binzhou Medical University, Yantai, China
| | - Luying Liu
- Department of Pathology, School of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Peng Ma
- Department of Genetics, School of Basic Medicine, Binzhou Medical University, Yantai, China
| | - Guqiang Li
- Rehabilitation Medicine & Physical Therapy, School of Rehabilitation Medicine, Binzhou Medical University, Yantai, China
| | - Ying Yang
- Hearing and Speech Rehabilitation Institute, College of Special Education, Binzhou Medical University, Yantai, China
| | - Yucheng Zhao
- Hearing and Speech Rehabilitation Institute, College of Special Education, Binzhou Medical University, Yantai, China
| | - Tihua Zheng
- Hearing and Speech Rehabilitation Institute, College of Special Education, Binzhou Medical University, Yantai, China
| | - Ruishuang Geng
- Hearing and Speech Rehabilitation Institute, College of Special Education, Binzhou Medical University, Yantai, China.
| | - Bo Li
- Hearing and Speech Rehabilitation Institute, College of Special Education, Binzhou Medical University, Yantai, China.
| | - Qingyin Zheng
- Department of Otolaryngology-Head & Neck Surgery, Case Western Reserve University, Cleveland, OH, USA
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10
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Zhang X, Wang Y, Gong P, Wang X, Zhang N, Chen M, Wei R, Zhang X, Li X, Li J. Neospora caninum Evades Immunity via Inducing Host Cell Mitophagy to Inhibit Production of Proinflammatory Cytokines in a ROS-Dependent Manner. Front Immunol 2022; 13:827004. [PMID: 35355995 PMCID: PMC8959673 DOI: 10.3389/fimmu.2022.827004] [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: 12/01/2021] [Accepted: 02/14/2022] [Indexed: 01/27/2023] Open
Abstract
Neospora caninum is an intracellular protozoan that mainly infects cattle to cause abortion and significant economic losses worldwide. A better understanding of the immune evasion mechanisms of N. caninum could help to search for an effective approach to prevent and treat neosporosis. Mitophagy is used by some viruses to evade host immune surveillance. However, host cell mitophagy and its effect on N. caninum infection is unclear. In the present study, N. caninum-induced host cell mitophagy and its role in parasite infection were investigated in vitro and in vivo. Furthermore, the regulation of N. caninum-induced host cell mitophagy on the production of Reactive Oxygen Species (ROS), the secretions of proinflammatory cytokines, and the signals of p38, ERK, and Nlrp3 inflammasome were explored. Our results showed that autophagosomes and co-localization of LC3 with mitochondria were observed in N. caninum-infected macrophages. The mtDNA/nDNA ratio and the levels of mitochondrial marker proteins (Hsp60 and Tim23) were decreased with the increase of N. caninum numbers or infection time. N. caninum could induce mitophagy in brain and peritoneal lavage fluid cells of mice. Promoting mitophagy via mitophagy inducers (CCCP) could shorten survival time, decrease body weight, increase parasite load, and attenuate secretion of cytokines in N. caninum infected mice. CCCP treatment decreased the production of cytokines and Reactive Oxygen Species (ROS), and increased parasite burden in N. caninum-infected macrophages. Furthermore, CCCP or NAC (ROS inhibitor) treatment could inhibit ERK signal, Nlrp3 inflammasome, and cytokine production, while promote p38 signal in N. caninum-infected macrophages. The opposite results were obtained when using a mitophagy inhibitor (Mdivi1). Taken together, N. caninum-induced mitophagy could regulate the activations of p38, ERK, Nlrp3 inflammasome to inhibit the production of inflammatory cytokines in a ROS-dependent manner to escape host immune surveillance.
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Affiliation(s)
- Xu Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Yuru Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Pengtao Gong
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xiaocen Wang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Nan Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Mengge Chen
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Ran Wei
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xichen Zhang
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Xin Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
| | - Jianhua Li
- Key Laboratory of Zoonosis Research, Ministry of Education, College of Veterinary Medicine, Jilin University, Changchun, China
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Coffin AB, Boney R, Hill J, Tian C, Steyger PS. Detecting Novel Ototoxins and Potentiation of Ototoxicity by Disease Settings. Front Neurol 2021; 12:725566. [PMID: 34489859 PMCID: PMC8418111 DOI: 10.3389/fneur.2021.725566] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 07/22/2021] [Indexed: 12/24/2022] Open
Abstract
Over 100 drugs and chemicals are associated with permanent hearing loss, tinnitus, and vestibular deficits, collectively known as ototoxicity. The ototoxic potential of drugs is rarely assessed in pre-clinical drug development or during clinical trials, so this debilitating side-effect is often discovered as patients begin to report hearing loss. Furthermore, drug-induced ototoxicity in adults, and particularly in elderly patients, may go unrecognized due to hearing loss from a variety of etiologies because of a lack of baseline assessments immediately prior to novel therapeutic treatment. During the current pandemic, there is an intense effort to identify new drugs or repurpose FDA-approved drugs to treat COVID-19. Several potential COVID-19 therapeutics are known ototoxins, including chloroquine (CQ) and lopinavir-ritonavir, demonstrating the necessity to identify ototoxic potential in existing and novel medicines. Furthermore, several factors are emerging as potentiators of ototoxicity, such as inflammation (a hallmark of COVID-19), genetic polymorphisms, and ototoxic synergy with co-therapeutics, increasing the necessity to evaluate a drug's potential to induce ototoxicity under varying conditions. Here, we review the potential of COVID-19 therapies to induce ototoxicity and factors that may compound their ototoxic effects. We then discuss two models for rapidly detecting the potential for ototoxicity: mammalian auditory cell lines and the larval zebrafish lateral line. These models offer considerable value for pre-clinical drug development, including development of COVID-19 therapies. Finally, we show the validity of in silico screening for ototoxic potential using a computational model that compares structural similarity of compounds of interest with a database of known ototoxins and non-ototoxins. Preclinical screening at in silico, in vitro, and in vivo levels can provide an earlier indication of the potential for ototoxicity and identify the subset of candidate therapeutics for treating COVID-19 that need to be monitored for ototoxicity as for other widely-used clinical therapeutics, like aminoglycosides and cisplatin.
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Affiliation(s)
| | | | - Jordan Hill
- Washington State University Vancouver, Vancouver, WA, United States
| | - Cong Tian
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE, United States
| | - Peter S. Steyger
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE, United States
- National Center for Rehabilitative Auditory Research, Portland, OR, United States
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12
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Xu XY, Tran THM, Perumalsamy H, Sanjeevram D, Kim YJ. Biosynthetic gold nanoparticles of Hibiscus syriacus L. callus potentiates anti-inflammation efficacy via an autophagy-dependent mechanism. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2021; 124:112035. [PMID: 33947536 DOI: 10.1016/j.msec.2021.112035] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/03/2021] [Accepted: 03/05/2021] [Indexed: 02/07/2023]
Abstract
Biological applications of gold nanoparticles (AuNps) have potentially explored an efficient agent attributed to their biocompatibility and high efficiency in drug delivery. Our study applied an extract of Hibiscus syriacus L. callus (HCE) with a pioneer implementation on the induction of mass production. Bioactive compounds present in HCE were identified by Gas chromatography-mass spectrometry (GC-MS) and Liquid chromatography MS (LC-MS), wherein, the Denatonium was exclusively identifiable in HCE. Next, AuNps were synthesized and optimized using HCE (HCE-AuNps), and the comparison was conducted to evaluate the anti-inflammatory effect in lipopolysaccharide (LPS)-stimulated macrophages. As per result, HCE-AuNps was reported to show a prominent reduction of pro-inflammatory cytokines and renovate the mitochondrial function through restoring the mitochondrial membrane potential changes, decreasing reactive oxygen species (ROS) accumulation, and recovering ATP contents, respectively. Furthermore, the immunoblotting of LC3b/a accumulation, and p62 rapid degradation revealed that HCE-AuNps could induce the autophagy as an intracellular response to reinforce alleviation of pro-inflammatory cytokines and mitochondria dysfunction. Besides, 740 Y-P (PI3K agonist) was used to verify that inhibiting autophagy could partially reverse HCE-AuNps suppressed mitochondrial dysfunction, and thus exacerbated inflammation, supporting a causal role for autophagy in the anti-inflammatory effect of HCE-AuNps. Taken together, we strongly anticipate that HCE-AuNps would act as a potential autophagy inducer for LPS-triggered macrophage's inflammation, providing a novel insight for biosynthetic nanoparticles in the treatment of mitochondria dysfunction and inflammation related diseases.
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Affiliation(s)
- Xing Yue Xu
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Gyeonggi-do, Republic of Korea
| | - Thi Hoa My Tran
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Gyeonggi-do, Republic of Korea
| | - Haribalan Perumalsamy
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Gyeonggi-do, Republic of Korea
| | - Dhandapani Sanjeevram
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Gyeonggi-do, Republic of Korea
| | - Yeon-Ju Kim
- Graduate School of Biotechnology, College of Life Science, Kyung Hee University, Yongin-si 17104, Gyeonggi-do, Republic of Korea.
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