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Shi Y, Xu N, Liu B, Ma Y, Fu X, Shang Y, Huang Q, Yao Q, Chen J, Li H. Mifepristone protects acetaminophen induced liver injury through NRF2/GSH/GST mediated ferroptosis suppression. Free Radic Biol Med 2024; 222:229-243. [PMID: 38906233 DOI: 10.1016/j.freeradbiomed.2024.06.014] [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: 04/27/2024] [Revised: 06/14/2024] [Accepted: 06/17/2024] [Indexed: 06/23/2024]
Abstract
Ferroptosis is a form of iron-dependent cell death that has attracted significant attention for its potential role in numerous diseases. Targeted inhibition of ferroptosis could be of potential use in treating diseases: such as drug induced liver injury (DILI). Ferroptosis can be antagonized by the xCT/GSH/GPX4, FSP1/CoQ10, DHODH/CoQ10, GCH1/BH4, and NRF2 pathways. Identifying novel anti-ferroptosis pathways will further promote our understanding of the biological nature of ferroptosis and help discover new drugs targeting ferroptosis related human diseases. In this study, we identified the clinically used drug mifepristone (RU486) as a novel ferroptosis inhibitor. Mechanistically, RU486 inhibits ferroptosis by inducing GSH synthesis pathway, which supplies GSH for glutathione-S-transferase (GST) mediated 4-HNE detoxification. Furthermore, RU486 induced RLIP76 and MRP1 export 4-HNE conjugate contributes to its anti-ferroptosis activity. Interestingly, RU486 induced GSH/GSTs/RLIP76&MRP1 anti-ferroptosis pathway acts independent of classic anti-ferroptosis systems: including xCT/GSH/GPX4, FSP1, DHODH, GCH1, SCD1 and FTH1. Moreover, NRF2 was identified to be important for RU486's anti-ferroptosis activity by inducing downstream gene expression. Importantly, in mouse model, RU486 showed strong protection effect on acetaminophen (APAP)-induced acute liver injury, evidenced by decreased ALT, AST level and histological recovery after APAP treatment. Interestingly, RU486 also decreased oxidative markers, including 4-HNE and MDA, and induced NRF2 activation as well as GSTs, MRP1 expression. Together, these data suggest NRF2/GSH/GST/RLIP76&MRP1 mediated detoxification pathway as an important independent anti-ferroptosis pathway act both in vitro and in vivo.
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Affiliation(s)
- Yanyun Shi
- GuiZhou University Medical College, Guiyang, 550025, China
| | - Nahua Xu
- Department of Hematology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China
| | - Baiping Liu
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children (Women and Children's Hospital of Chongqing Medical University), Chongqing, 401120, China
| | - Yanni Ma
- Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Xuemei Fu
- Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children (Women and Children's Hospital of Chongqing Medical University), Chongqing, 401120, China
| | - Yingying Shang
- Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China
| | - Qilin Huang
- GuiZhou University Medical College, Guiyang, 550025, China; Department of Neurosurgery, Guiqian International General Hospital, Changpo Road, Wudang District, Guiyang, 550000, China.
| | - Qi Yao
- Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.
| | - Jieping Chen
- Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China.
| | - Hui Li
- Department of Hematology, Southwest Hospital, Third Military Medical University (Army Medical University), Chongqing, 400038, China; Department of Obstetrics and Gynecology, Chongqing Health Center for Women and Children (Women and Children's Hospital of Chongqing Medical University), Chongqing, 401120, China; Department of Hematology, Affiliated Hospital of Zunyi Medical University, Zunyi, 563000, China.
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Corsaro D. Editorial for the Special Issue "Advances in Acanthamoeba". Microorganisms 2024; 12:865. [PMID: 38792695 PMCID: PMC11123729 DOI: 10.3390/microorganisms12050865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2024] [Revised: 04/24/2024] [Accepted: 04/25/2024] [Indexed: 05/26/2024] Open
Abstract
Some free-living amoebae can behave as opportunistic parasites, causing rare but dangerous diseases in humans and animals, primarily amoebic keratitis, with loss of vision, and encephalitis, which is almost always fatal [...].
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Affiliation(s)
- Daniele Corsaro
- CHLAREAS, 12, rue du Maconnais, 54500 Vandœuvre-lès-Nancy, France
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Scheckhuber CQ, Damián Ferrara R, Gómez-Montalvo J, Maciver SK, de Obeso Fernández Del Valle A. Oxidase enzyme genes are differentially expressed during Acanthamoeba castellanii encystment. Parasitol Res 2024; 123:116. [PMID: 38289423 DOI: 10.1007/s00436-024-08138-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/22/2024] [Indexed: 02/01/2024]
Abstract
Acanthamoeba castellanii, a ubiquitous protozoan, is responsible for significant diseases such as Acanthamoeba keratitis and granulomatous amoebic encephalitis. A crucial survival strategy of A. castellanii involves the formation of highly resistant cysts during adverse conditions. This study delves into the cellular processes underpinning encystment, focusing on gene expression changes related to reactive oxygen species (ROS) balance, with a particular emphasis on mitochondrial processes. Our findings reveal a dynamic response within the mitochondria during encystment, with the downregulation of key enzymes involved in oxidative phosphorylation (COX, AOX, and NADHalt) during the initial 48 h, followed by their overexpression at 72 h. This orchestrated response likely creates a pro-oxidative environment, facilitating encystment. Analysis of other ROS processing enzymes across the cell reveals differential expression patterns. Notably, antioxidant enzymes, such as catalases, glutaredoxins, glutathione S-transferases, peroxiredoxins, and thioredoxins, mirror the mitochondrial trend of downregulation followed by upregulation. Additionally, glycolysis and gluconeogenesis are downregulated during the early stages in order to potentially balance the metabolic requirement of the cyst. Our study underscores the importance of ROS regulation in Acanthamoeba encystment. Understanding these mechanisms offers insights into infection control and identifies potential therapeutic targets. This work contributes to unraveling the complex biology of A. castellanii and may aid in combatting Acanthamoeba-related infections. Further research into ROS and oxidase enzymes is warranted, given the organism's remarkable respiratory versatility.
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Affiliation(s)
- Christian Q Scheckhuber
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, 64849, Monterrey, N.L, Mexico
| | - Rebeca Damián Ferrara
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, 64849, Monterrey, N.L, Mexico
| | - Jesús Gómez-Montalvo
- Tecnologico de Monterrey, Escuela de Ingeniería y Ciencias, Ave. Eugenio Garza Sada 2501, 64849, Monterrey, N.L, Mexico
| | - Sutherland K Maciver
- Centre for Discovery Brain Sciences, Edinburgh Medical School, Biomedical Sciences, University of Edinburgh, Hugh Robson Building, George Square, Edinburgh, EH8 9XD, Scotland, UK
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Samba-Louaka A, Labruyère E, Matondo M, Locard-Paulet M, Olivo-Marin JC, Guillen N. Encystation and Stress Responses under the Control of Ubiquitin-like Proteins in Pathogenic Amoebae. Microorganisms 2023; 11:2670. [PMID: 38004682 PMCID: PMC10673212 DOI: 10.3390/microorganisms11112670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2023] [Revised: 10/21/2023] [Accepted: 10/24/2023] [Indexed: 11/26/2023] Open
Abstract
Amoebae found in aquatic and terrestrial environments encompass various pathogenic species, including the parasite Entamoeba histolytica and the free-living Acanthamoeba castellanii. Both microorganisms pose significant threats to public health, capable of inducing life-threatening effects on humans. These amoebae exist in two cellular forms: trophozoites and cysts. The trophozoite stage is the form used for growth and reproduction while the cyst stage is the resistant and disseminating form. Cysts occur after cellular metabolism slowdown due to nutritional deprivation or the appearance of environmental conditions unfavourable to the amoebae's growth and division. The initiation of encystation is accompanied by the activation of stress responses, and scarce data indicate that encystation shares factors and mechanisms identified in stress responses occurring in trophozoites exposed to toxic compounds derived from human immune defence. Although some "omics" analyses have explored how amoebae respond to diverse stresses, these studies remain limited and rarely report post-translational modifications that would provide knowledge on the molecular mechanisms underlying amoebae-specific stress responses. In this review, we discuss ubiquitin-like proteins associated with encystation and cell survival during oxidative damage. We aim to shed light on the signalling pathways involved in amoebic defence mechanisms, with a focus on their potential clinical implications against pathogenic amoebae, addressing the pressing need for effective therapies.
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Affiliation(s)
- Ascel Samba-Louaka
- Université de Poitiers, Centre National de la Recherche Scientifique UMR7267, Laboratoire Ecologie et Biologie des Interactions, TSA51106, 86073 Poitiers, France
| | - Elisabeth Labruyère
- Institut Pasteur, Biological Image Analysis Unit, Centre National de la Recherche Scientifique UMR3691, Université Paris Cité, 75015 Paris, France; (E.L.); (J.-C.O.-M.)
| | - Mariette Matondo
- Institut Pasteur, Proteomics Core Facility, Mass Spectrometry for Biology Unit, Centre National de la Recherche Scientifique UAR 2024, Université Paris Cité, 75015 Paris, France;
| | - Marie Locard-Paulet
- Institut de Pharmacologie et de Biologie Structurale, Centre National de la Recherche Scientifique UMR 5089, Université Toulouse III-Paul Sabatier, 31077 Toulouse, France;
- Infrastructure Nationale de Proteomique ProFI—FR2048, 2048 Toulouse, France
| | - Jean-Christophe Olivo-Marin
- Institut Pasteur, Biological Image Analysis Unit, Centre National de la Recherche Scientifique UMR3691, Université Paris Cité, 75015 Paris, France; (E.L.); (J.-C.O.-M.)
| | - Nancy Guillen
- Institut Pasteur, Biological Image Analysis Unit, Centre National de la Recherche Scientifique UMR3691, Université Paris Cité, 75015 Paris, France; (E.L.); (J.-C.O.-M.)
- Institut Pasteur, Centre National de la Recherche Scientifique ERL9195, 75015 Paris, France
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