1
|
张 方, 刘 刚. [Dexmedetomidine inhibits ferroptosis of human renal tubular epithelial cells by activating the Nrf2/HO-1/GPX4 pathway]. NAN FANG YI KE DA XUE XUE BAO = JOURNAL OF SOUTHERN MEDICAL UNIVERSITY 2024; 44:1135-1140. [PMID: 38977343 PMCID: PMC11237299 DOI: 10.12122/j.issn.1673-4254.2024.06.14] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Indexed: 07/10/2024]
Abstract
OBJECTIVE To investigate the protective effect of dexmedetomidine (DEX) against erastin-induced ferroptosis in human renal tubular epithelial cells (HK-2 cells) and explore the underlying mechanism. METHODS HK-2 cells were treated with erastin alone or in combination with different concentrations (2.5, 5.0 and 10 μmol/L) of DEX, and the changes in cell viability were observed using CCK-8 assay. To explore the mechanism by which DEX inhibits erastin-induced ferroptosis, HK-2 cells were treated with erastin, erastin+10 μmol/L DEX, or erastin+10 μmol/L DEX+ML385 (a Nrf2 inhibitor), after which the cell viability was assessed. The level of intracellular Fe2+ was detected by cell ferrous iron colorimetric assay kit, and flow cytometry was performed to detect reactive oxygen species (ROS); MDA and reduced glutathione assay kits were used to detect the contents of MDA and GSH in the cells; The expressions of Nrf2, HO-1 and GPX4 proteins were detected by Western blotting. RESULTS Erastin treatment significantly inhibited the viability of the cells, decreased GSH content, and increased intracellular levels of Fe2+, ROS and MDA. The combined treatment with 10 μmol/L DEX markedly increased the viability of the cells, increased GSH content, reduced the levels of Fe2+, ROS and MDA, and upregulated the protein expressions of Nrf2, HO-1 and GPX4 in the cells. The application of ML385 obviously blocked the protective effect of DEX and caused significant inhibition of the Nrf2/HO-1/GPX4 pathway, decreased the cell viability and GSH content, and increased the levels of Fe2+, ROS and MDA in HK-2 cells. CONCLUSION The protective effect of DEX against erastin-induced ferroptosis of HK-2 cells is probably mediated by activation of the Nrf2/HO-1/GPX4 pathway to inhibit oxidative stress.
Collapse
|
2
|
Punchai S, Chaiyagot N, Artkaew N, Jusakul A, Cha’on U, Thanan R, Vaeteewoottacharn K, Lert-Itthiporn W. Iron-induced kidney cell damage: insights into molecular mechanisms and potential diagnostic significance of urinary FTL. Front Mol Biosci 2024; 11:1352032. [PMID: 38449697 PMCID: PMC10916690 DOI: 10.3389/fmolb.2024.1352032] [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: 12/07/2023] [Accepted: 01/30/2024] [Indexed: 03/08/2024] Open
Abstract
Background: Iron overload can lead to organ and cell injuries. Although the mechanisms of iron-induced cell damage have been extensively studied using various cells, little is known about these processes in kidney cells. Methods: In this study, we first examined the correlation between serum iron levels and kidney function. Subsequently, we investigated the molecular impact of excess iron on kidney cell lines, HEK293T and HK-2. The presence of the upregulated protein was further validated in urine. Results: The results revealed that excess iron caused significant cell death accompanied by morphological changes. Transcriptomic analysis revealed an up-regulation of the ferroptosis pathway during iron treatment. This was confirmed by up-regulation of ferroptosis markers, ferritin light chain (FTL), and prostaglandin-endoperoxide synthase 2 (PTGS2), and down-regulation of acyl-CoA synthetase long-chain family member 4 (ACSL4) and glutathione peroxidase 4 (GPX4) using real-time PCR and Western blotting. In addition, excess iron treatment enhanced protein and lipid oxidation. Supportively, an inverse correlation between urinary FTL protein level and kidney function was observed. Conclusion: These findings suggest that excess iron disrupts cellular homeostasis and affects key proteins involved in kidney cell death. Our study demonstrated that high iron levels caused kidney cell damage. Additionally, urinary FTL might be a useful biomarker to detect kidney damage caused by iron toxicity. Our study also provided insights into the molecular mechanisms of iron-induced kidney injury, discussing several potential targets for future interventions.
Collapse
Affiliation(s)
- Soraya Punchai
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Nachayada Chaiyagot
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Nadthanicha Artkaew
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Chronic Kidney Disease Prevention in Northeastern Thailand, Khon Kaen University, Khon Kaen, Thailand
| | - Apinya Jusakul
- Chronic Kidney Disease Prevention in Northeastern Thailand, Khon Kaen University, Khon Kaen, Thailand
- Centre for Research and Development of Medical Diagnostic Laboratories, Faculty of Associated Medical Sciences, Khon Kaen University, Khon Kaen, Thailand
| | - Ubon Cha’on
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Chronic Kidney Disease Prevention in Northeastern Thailand, Khon Kaen University, Khon Kaen, Thailand
| | - Raynoo Thanan
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Chronic Kidney Disease Prevention in Northeastern Thailand, Khon Kaen University, Khon Kaen, Thailand
| | - Kulthida Vaeteewoottacharn
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Center for Translational Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Worachart Lert-Itthiporn
- Department of Biochemistry, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
- Chronic Kidney Disease Prevention in Northeastern Thailand, Khon Kaen University, Khon Kaen, Thailand
- Center for Translational Medicine, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| |
Collapse
|
3
|
Wang X, Lin Z, Li T, Zhu W, Huang H, Hu J, Zhou J. Sodium Selenite Prevents Matrine-Induced Nephrotoxicity by Suppressing Ferroptosis via the GSH-GPX4 Antioxidant System. Biol Trace Elem Res 2024:10.1007/s12011-023-04044-w. [PMID: 38177716 DOI: 10.1007/s12011-023-04044-w] [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: 11/16/2023] [Accepted: 12/26/2023] [Indexed: 01/06/2024]
Abstract
Matrine (MT), an active ingredient derived from Sophor flavescens Ait, is used as a therapeutic agent to treat liver disease and cancer. However, the serious toxic effects of MT, including nephrotoxicity, have limited its clinical application. Here, we explored the involvement of ferroptosis in MT-induced kidney injury and evaluated the potential efficacy and underlying mechanism of sodium selenite (SS) in attenuating MT-induced nephrotoxicity. We found that MT not only disrupts renal structure in mice but also induces the death of NRK-52E cells. Additionally, MT treatment resulted in significant elevations in ferrous iron, reactive oxygen species (ROS) and lipid peroxidation levels, accompanied by decreases in glutathione (GSH) and glutathione peroxidase (GPx) levels. SS effectively mitigated the alterations in ferroptosis-related indicators caused by MT and prevented MT-induced nephrotoxicity as effectively as Fer-1 in vivo and in vitro. SS also reversed the MT-induced reduction in GPX4, CTH and xCT protein levels. However, the glutathione peroxidase 4 (GPX4) inhibitor RSL3 and knockdown of GPX4, CTH, or xCT via siRNA abolished the protective effect of SS against MT-induced nephrotoxicity, indicating that SS exhibited antiferroptotic effects via the GSH-GPX4 antioxidant system. Overall, MT-induced ferroptosis triggers nephrotoxicity, and SS is a promising therapeutic drug for alleviating MT-induced renal injury by activating the GSH-GPX4 axis.
Collapse
Affiliation(s)
- Xi Wang
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun, Jiangxi, 336000, People's Republic of China
| | - Zixiong Lin
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun, Jiangxi, 336000, People's Republic of China
| | - Ting Li
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun, Jiangxi, 336000, People's Republic of China
| | - Wenjing Zhu
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun, Jiangxi, 336000, People's Republic of China
| | - Hanxin Huang
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun, Jiangxi, 336000, People's Republic of China
| | - Jiayan Hu
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun, Jiangxi, 336000, People's Republic of China
| | - Jie Zhou
- School of Medicine, Yichun University, 576 XueFu Road, Yuanzhou District, Yichun, Jiangxi, 336000, People's Republic of China.
| |
Collapse
|
4
|
Chu LK, Cao X, Wan L, Diao Q, Zhu Y, Kan Y, Ye LL, Mao YM, Dong XQ, Xiong QW, Fu MC, Zhang T, Zhou HT, Cai SZ, Ma ZR, Hsu SW, Wu R, Chen CH, Yan XM, Liu J. Autophagy of OTUD5 destabilizes GPX4 to confer ferroptosis-dependent kidney injury. Nat Commun 2023; 14:8393. [PMID: 38110369 PMCID: PMC10728081 DOI: 10.1038/s41467-023-44228-5] [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: 06/28/2023] [Accepted: 12/05/2023] [Indexed: 12/20/2023] Open
Abstract
Ferroptosis is an iron-dependent programmed cell death associated with severe kidney diseases, linked to decreased glutathione peroxidase 4 (GPX4). However, the spatial distribution of renal GPX4-mediated ferroptosis and the molecular events causing GPX4 reduction during ischemia-reperfusion (I/R) remain largely unknown. Using spatial transcriptomics, we identify that GPX4 is situated at the interface of the inner cortex and outer medulla, a hyperactive ferroptosis site post-I/R injury. We further discover OTU deubiquitinase 5 (OTUD5) as a GPX4-binding protein that confers ferroptosis resistance by stabilizing GPX4. During I/R, ferroptosis is induced by mTORC1-mediated autophagy, causing OTUD5 degradation and subsequent GPX4 decay. Functionally, OTUD5 deletion intensifies renal tubular cell ferroptosis and exacerbates acute kidney injury, while AAV-mediated OTUD5 delivery mitigates ferroptosis and promotes renal function recovery from I/R injury. Overall, this study highlights a new autophagy-dependent ferroptosis module: hypoxia/ischemia-induced OTUD5 autophagy triggers GPX4 degradation, offering a potential therapeutic avenue for I/R-related kidney diseases.
Collapse
Affiliation(s)
- Li-Kai Chu
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Xu Cao
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Lin Wan
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Qiang Diao
- Department of Medical Imaging, Jinling Hospital, Affiliated Hospital of Medical School, Nanjing University, 210002, Nanjing, China
| | - Yu Zhu
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Yu Kan
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Li-Li Ye
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Yi-Ming Mao
- Department of Thoracic Surgery, Suzhou Kowloon Hospital, Shanghai Jiao Tong University School of Medicine, 215028, Suzhou, China
| | - Xing-Qiang Dong
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Qian-Wei Xiong
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Ming-Cui Fu
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Ting Zhang
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Hui-Ting Zhou
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Shi-Zhong Cai
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Zhou-Rui Ma
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China
| | - Ssu-Wei Hsu
- Division of Nephrology, Department of Internal Medicine, University of California Davis, Davis, CA, USA
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, University of California Davis, Davis, CA, USA
| | - Reen Wu
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, University of California Davis, Davis, CA, USA
| | - Ching-Hsien Chen
- Division of Nephrology, Department of Internal Medicine, University of California Davis, Davis, CA, USA.
- Division of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, University of California Davis, Davis, CA, USA.
| | - Xiang-Ming Yan
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China.
| | - Jun Liu
- Pediatric Institute of Soochow University, Children's Hospital of Soochow University, Soochow University, 215025, Suzhou, China.
| |
Collapse
|
5
|
Li J, Zheng S, Fan Y, Tan K. Emerging significance and therapeutic targets of ferroptosis: a potential avenue for human kidney diseases. Cell Death Dis 2023; 14:628. [PMID: 37739961 PMCID: PMC10516929 DOI: 10.1038/s41419-023-06144-w] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 09/06/2023] [Accepted: 09/11/2023] [Indexed: 09/24/2023]
Abstract
Kidney diseases remain one of the leading causes of human death and have placed a heavy burden on the medical system. Regulated cell death contributes to the pathology of a plethora of renal diseases. Recently, with in-depth studies into kidney diseases and cell death, a new iron-dependent cell death modality, known as ferroptosis, has been identified and has attracted considerable attention among researchers in the pathogenesis of kidney diseases and therapeutics to treat them. The majority of studies suggest that ferroptosis plays an important role in the pathologies of multiple kidney diseases, such as acute kidney injury (AKI), chronic kidney disease, and renal cell carcinoma. In this review, we summarize recently identified regulatory molecular mechanisms of ferroptosis, discuss ferroptosis pathways and mechanisms of action in various kidney diseases, and describe the protective effect of ferroptosis inhibitors against kidney diseases, especially AKI. By summarizing the prominent roles of ferroptosis in different kidney diseases and the progress made in studying ferroptosis, we provide new directions and strategies for future research on kidney diseases. In summary, ferroptotic factors are potential targets for therapeutic intervention to alleviate different kidney diseases, and targeting them may lead to new treatments for patients with kidney diseases.
Collapse
Affiliation(s)
- Jinghan Li
- Ministry of Education Key Laboratory of Molecular and Cellular Biology; Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
| | - Sujuan Zheng
- Ministry of Education Key Laboratory of Molecular and Cellular Biology; Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China
| | - Yumei Fan
- Ministry of Education Key Laboratory of Molecular and Cellular Biology; Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China.
| | - Ke Tan
- Ministry of Education Key Laboratory of Molecular and Cellular Biology; Hebei Research Center of the Basic Discipline of Cell Biology, Hebei Province Key Laboratory of Animal Physiology, Biochemistry and Molecular Biology, College of Life Sciences, Hebei Normal University, Shijiazhuang, Hebei, China.
| |
Collapse
|
6
|
Bayır H, Dixon SJ, Tyurina YY, Kellum JA, Kagan VE. Ferroptotic mechanisms and therapeutic targeting of iron metabolism and lipid peroxidation in the kidney. Nat Rev Nephrol 2023; 19:315-336. [PMID: 36922653 DOI: 10.1038/s41581-023-00689-x] [Citation(s) in RCA: 54] [Impact Index Per Article: 54.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/07/2023] [Indexed: 03/17/2023]
Abstract
Ferroptosis is a mechanism of regulated necrotic cell death characterized by iron-dependent, lipid peroxidation-driven membrane destruction that can be inhibited by glutathione peroxidase 4. Morphologically, it is characterized by cellular, organelle and cytoplasmic swelling and the loss of plasma membrane integrity, with the release of intracellular components. Ferroptosis is triggered in cells with dysregulated iron and thiol redox metabolism, whereby the initial robust but selective accumulation of hydroperoxy polyunsaturated fatty acid-containing phospholipids is further propagated through enzymatic and non-enzymatic secondary mechanisms, leading to formation of oxidatively truncated electrophilic species and their adducts with proteins. Thus, ferroptosis is dependent on the convergence of iron, thiol and lipid metabolic pathways. The kidney is particularly susceptible to redox imbalance. A growing body of evidence has linked ferroptosis to acute kidney injury in the context of diverse stimuli, such as ischaemia-reperfusion, sepsis or toxins, and to chronic kidney disease, suggesting that ferroptosis may represent a novel therapeutic target for kidney disease. However, further work is needed to address gaps in our understanding of the triggers, execution and spreading mechanisms of ferroptosis.
Collapse
Affiliation(s)
- Hülya Bayır
- Department of Critical Care Medicine, Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, USA.
- Center for Free Radical and Antioxidant Health, Departments of Environmental Health, Pharmacology and Chemical Biology, Chemistry, Radiation Oncology, University of Pittsburgh, Pittsburgh, PA, USA.
- Department of Pediatrics, Division of Critical Care and Hospital Medicine, Redox Health Center, Vagelos College of Physicians and Surgeons, Columbia University Irving Medical Center, New York, NY, USA.
| | - Scott J Dixon
- Department of Biology, Stanford University, Stanford, CA, USA
| | - Yulia Y Tyurina
- Center for Free Radical and Antioxidant Health, Departments of Environmental Health, Pharmacology and Chemical Biology, Chemistry, Radiation Oncology, University of Pittsburgh, Pittsburgh, PA, USA
| | - John A Kellum
- Department of Critical Care Medicine, Safar Center for Resuscitation Research, University of Pittsburgh, Pittsburgh, PA, USA
| | - Valerian E Kagan
- Center for Free Radical and Antioxidant Health, Departments of Environmental Health, Pharmacology and Chemical Biology, Chemistry, Radiation Oncology, University of Pittsburgh, Pittsburgh, PA, USA
| |
Collapse
|
7
|
Bibliometric analysis of ferroptosis in acute kidney injury from 2014 to 2022. Int Urol Nephrol 2023; 55:1509-1521. [PMID: 36611104 DOI: 10.1007/s11255-022-03456-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 12/27/2022] [Indexed: 01/09/2023]
Abstract
INTRODUCTION Acute kidney injury (AKI) is a global disease with high morbidity and mortality. At present, the treatment of AKI still lacks targeted measures. Ferroptosis, a form of regulated cell death, plays an essential role in the initiation and progression of AKI. Current evidence proves that targeting ferroptosis is supposed to be a novel potential strategy to cure AKI. In this study, we aim to use bibliometric analysis to identify research trends and hotspots in the field of "ferroptosis in AKI". METHODS We chose the Science Citation Index Expanded (SCI-EXPANDED) index of the Web of Science Core Collection (WoSCC) as the source database for data retrieval. Data were retrieved from the WoSCC on May 24, 2022. Full records and cited references of all the documents in WoSCC were collected. The R software and the Online Analysis Platform of Literature Metrology were used for data analysis and visual analysis. RESULTS There were 120 documents on "ferroptosis in AKI" in the WOSCC from 2014 to 2022 (May 24, 2022). There was a clear upward trend each year in the number of documents published. According to WoS report, China, the United States, and Germany were the top three countries involved in this research area, the majority of publications were included in the subject area "Cell Biology". Technical University of Dresden contributed the most publications, followed by Central South University and University of Pittsburgh. The Journal of Cell Death and Disease had the highest H-index and contributed the most publications. Linkermann A authored 16 articles and had the highest H-index. Multifactorial analysis of the keywords show that the research field is divided into two clusters. The most contributing publications and the most cited publications were also determined by factorial analysis. CONCLUSION This bibliometric analysis provides a comprehensive analysis of research trends and hot spots on the topic of "ferroptosis in AKI". The study of ferroptosis-related AKI research remains in its early stages. There will be a dramatically increasing number of publications on this field. Further research should focus on exploring the mechanisms of crosstalk between ferroptosis and other programmed cell deaths, and improves clinical applications and therapeutic effects against AKI.
Collapse
|
8
|
Varga D, Hajdinák P, Makk-Merczel K, Szarka A. The Possible Connection of Two Dual Function Processes: The Relationship of Ferroptosis and the JNK Pathway. Int J Mol Sci 2022; 23:ijms231911004. [PMID: 36232313 PMCID: PMC9570426 DOI: 10.3390/ijms231911004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/09/2022] [Accepted: 09/15/2022] [Indexed: 11/16/2022] Open
Abstract
Ferroptosis represents a typical process that has dual functions in cell fate decisions since the reduction and/or inhibition of ferroptosis is desirable for the therapies of diseases such as neurological disorders, localized ischemia-reperfusion, kidney injury, and hematological diseases, while the enhanced ferroptosis of cancer cells may benefit patients with cancer. The JNK pathway also has a real dual function in the fate of cells. Multiple factors suggest a potential link between the ferroptotic and JNK pathways; (i) both processes are ROS mediated; (ii) both can be inhibited by lipid peroxide scavengers; (iii) RAS mutations may play a role in the initiation of both pathways. We aimed to investigate the possible link between ferroptosis and the JNK pathway. Interestingly, JNK inhibitor co-treatment could enhance the cancer cytotoxic effect of the ferroptosis inducers in NRAS and KRAS mutation-harboring cells (HT-1080 and MIA PaCa-2). Since cancer’s cytotoxic effect from the JNK inhibitors could only be suspended by the ferroptosis inhibitors, and that sole JNK-inhibitor treatment did not affect cell viability, it seems that the JNK inhibitors “just” amplify the effect of the ferroptosis inducers. This cancer cell death amplifying effect of the JNK inhibitors could not be observed in other oxidative stress-driven cell deaths. Hence, it seems it is specific to ferroptosis. Finally, our results suggest that GSH content/depletion could be an important candidate for switching the anti-cancer effect of JNK inhibitors.
Collapse
Affiliation(s)
- Dóra Varga
- Laboratory of Biochemistry and Molecular Biology, Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary
- Biotechnology Model Laboratory, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary
| | - Péter Hajdinák
- Laboratory of Biochemistry and Molecular Biology, Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary
- Biotechnology Model Laboratory, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary
| | - Kinga Makk-Merczel
- Laboratory of Biochemistry and Molecular Biology, Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary
- Biotechnology Model Laboratory, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary
| | - András Szarka
- Laboratory of Biochemistry and Molecular Biology, Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary
- Biotechnology Model Laboratory, Faculty of Chemical Technology and Biotechnology, Budapest University of Technology and Economics, Szent Gellért tér 4, H-1111 Budapest, Hungary
- Correspondence:
| |
Collapse
|