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Guler A, Yilmaz A, Oncer N, Sever NI, Cengiz Sahin S, Kavakcıoglu Yardimci B, Yilmaz M. Machine learning-assisted SERS approach enables the biochemical discrimination in Bcl-2 and Mcl-1 expressing yeast cells treated with ketoconazole and fluconazole antifungals. Talanta 2024; 276:126248. [PMID: 38776770 DOI: 10.1016/j.talanta.2024.126248] [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: 03/01/2024] [Revised: 05/01/2024] [Accepted: 05/10/2024] [Indexed: 05/25/2024]
Abstract
Antifungal medications are important due to their potential application in cancer treatment either on their own or with traditional treatments. The mechanisms that prevent the effects of these medications and restrict their usage in cancer treatment are not completely understood. The evaluation and discrimination of the possible protective effects of the anti-apoptotic members of the Bcl-2 family of proteins, critical regulators of mitochondrial apoptosis, against antifungal drug-induced cell death has still scientific uncertainties that must be considered. Novel, simple, and reliable strategies are highly demanded to identify the biochemical signature of this phenomenon. However, the complex nature of cells poses challenges for the analysis of cellular biochemical changes or classification. In this study, for the first time, we investigated the probable protective activities of Bcl-2 and Mcl-1 proteins against cell damage induced by ketoconazole (KET) and fluconazole (FLU) antifungal drugs in a yeast model through surface-enhanced Raman spectroscopy (SERS) approach. The proposed SERS platform created robust Raman spectra with a high signal-to-noise ratio. The analysis of SERS spectral data via advanced unsupervised and supervised machine learning methods enabled unquestionable differentiation (100 %) in samples and biomolecular identification. Various SERS bands related to lipids and proteins observed in the analyses suggest that the expression of these anti-apoptotic proteins reduces oxidative biomolecule damage induced by the antifungals. Also, cell viability assay, Annexin V-FITC/PI double staining, and total oxidant and antioxidant status analyses were performed to support Raman measurements. We strongly believe that the proposed approach paves the way for the evaluation of various biochemical structures/changes in various cells.
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Affiliation(s)
- Ayşenur Guler
- Chemistry Department, Graduate School of Natural and Applied Sciences, Pamukkale University, Denizli, Turkey
| | - Asli Yilmaz
- Department of Molecular Biology & Genetics, Faculty of Science, Ataturk University, Erzurum, Turkey
| | - Nazli Oncer
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Sciences, Ataturk University, Erzurum, Turkey
| | - Nurettin Ilter Sever
- Department of Molecular Biology & Genetics, Faculty of Science, Pamukkale University, Denizli, Turkey
| | - Sevilay Cengiz Sahin
- Department of Molecular Biology & Genetics, Faculty of Science, Pamukkale University, Denizli, Turkey
| | - Berna Kavakcıoglu Yardimci
- Department of Chemistry, Faculty of Science, Pamukkale University, Denizli, Turkey; Advanced Technology Application and Research Center, Pamukkale University, Denizli, Turkey.
| | - Mehmet Yilmaz
- Department of Nanoscience and Nanoengineering, Graduate School of Natural and Applied Sciences, Ataturk University, Erzurum, Turkey; Department of Chemical Engineering, Faculty of Engineering, Ataturk University, Erzurum, Turkey.
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2
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Tang W, Liu JR, Wang Q, Zheng YL, Zhou XY, Xie L, Dai F, Zhang S, Zhou B. Developing a novel benzothiazole-based red-emitting probe for intravital imaging of superoxide anion. Talanta 2024; 268:125297. [PMID: 37832453 DOI: 10.1016/j.talanta.2023.125297] [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: 07/28/2023] [Revised: 10/04/2023] [Accepted: 10/06/2023] [Indexed: 10/15/2023]
Abstract
Superoxide anion (O2•-), the first generated reactive oxygen species (ROS), is a critical player in cellular signaling network and redox homeostasis. Imaging of O2•-, particularly in vivo, is of concern for further understanding its roles in pathophysiological and pharmacological events. Herein, we designed a novel probe, (E)-4-(5-(2-(benzo[d]thiazol-2-yl)-2-cyanovinyl)furan-2-yl)phenyl trifluoromethane-sulfonate (BFTF), by modifying hydroxyphenyl benzothiazole (a widely used dye scaffold) which includes insertion of both an acrylonitrile unit and a furan ring to extend the total π-conjugation system and to enhance push-pull intramolecular charge transfer process, and utilization of trifluoromethanesulfonate as the response unit. Toward O2•-, the probe features near-infrared fluorescent emission (685 nm), large Stokes shift (135 nm), and deep tissue penetration (300 μm). With its help, we successfully mapped preferential generation of O2•- in HepG2 cells over L02 cells, as well as in A549 over BEAS-2B cells by β-lapachone (an anticancer agent that generates O2•-), and more importantly, visualized overproduction of O2•- in living mice with liver injury induced by acetaminophen (a well-known analgesic and antipyretic drug).
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Affiliation(s)
- Wei Tang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Jun-Ru Liu
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Qi Wang
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Ya-Long Zheng
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Xi-Yue Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Li Xie
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China
| | - Fang Dai
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China.
| | - Shengxiang Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China.
| | - Bo Zhou
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, 222 Tianshui Street S., Lanzhou, Gansu, 730000, China.
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3
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Bao T, Karim N, Ke H, Tangpong J, Chen W. Polysaccharide isolated from wax apple suppresses ethyl carbamate-induced oxidative damage in human hepatocytes. J Zhejiang Univ Sci B 2023; 24:574-586. [PMID: 37455135 PMCID: PMC10350369 DOI: 10.1631/jzus.b2200629] [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: 12/06/2022] [Accepted: 02/27/2023] [Indexed: 06/27/2023]
Abstract
Wax apple (Syzygium samarangense) has received growing research interest for its high nutritional and medicinal value due to its constituents such as polysaccharide, organic acids, flavonoids, minerals, and other substances. In this study, wax apple polysaccharide (WAP) was isolated from this plant and its protective effect against ethyl carbamate (EC)-induced oxidative damage was evaluated in human hepatocytes (L02 cells). Firstly, a series of analyses such as high-performance liquid chromatography (HPLC), high-performance gel permeation chromatography (HPGPC), Fourier transform infrared spectroscopy (FT-IR), gas chromatography/mass spectrometry (GC/MS), and 1H and 13C nuclear magnetic resonance (NMR) were conducted to identify the structure of WAP. Thereafter, in vitro cell experiments were performed to verify the protective effects of WAP against EC-induced cytotoxicity, genotoxicity, and oxidative damage in L02 cells. Our results revealed that WAP is composed of mannose, rhamnose, glucuronic acid, galacturonic acid, glucose, galactose, arabinose, and fucose in a molar ratio of 2.20:3.94:4.45:8.56:8.86:30.82:39.78:1.48. Using a combination of methylation and NMR spectroscopic analysis, the primary structure of WAP was identified as Araf-(1→, Glcp-(1→, →2)-Araf-(1→, →3)-Galp-(1→, →3)-Araf-(1→, and →6)-Galp-(1→. Cell experiments indicated that WAP exhibited significant protective effects on EC-treated L02 cells via suppressing cytotoxicity and genotoxicity, reducing reactive oxygen species (ROS) and O2•- formation, as well as improving mitochondrial membrane potential (MMP) and glutathione (GSH). In a nutshell, WAP has the potential as an important therapeutic agent or supplement for hepatic oxidative damage. Meanwhile, further studies are needed to prove the above effects in vivo at the biological and clinical levels.
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Affiliation(s)
- Tao Bao
- Department of Traditional Chinese Medicine, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Naymul Karim
- Department of Traditional Chinese Medicine, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Huihui Ke
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China
| | - Jitbanjong Tangpong
- Biomedical Sciences, School of Allied Health Sciences, Walailak University, Nakhon Si Thammarat 80161, Thailand
| | - Wei Chen
- Department of Traditional Chinese Medicine, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou 310016, China.
- Department of Food Science and Nutrition, Zhejiang University, Hangzhou 310058, China.
- Ningbo Innovation Center, Zhejiang University, Ningbo 315100, China.
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4
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Vishnu J, Kesavan P, Shankar B, Dembińska K, Swiontek Brzezinska M, Kaczmarek-Szczepańska B. Engineering Antioxidant Surfaces for Titanium-Based Metallic Biomaterials. J Funct Biomater 2023; 14:344. [PMID: 37504839 PMCID: PMC10381466 DOI: 10.3390/jfb14070344] [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: 06/02/2023] [Revised: 06/21/2023] [Accepted: 06/27/2023] [Indexed: 07/29/2023] Open
Abstract
Prolonged inflammation induced by orthopedic metallic implants can critically affect the success rates, which can even lead to aseptic loosening and consequent implant failure. In the case of adverse clinical conditions involving osteoporosis, orthopedic trauma and implant corrosion-wear in peri-implant region, the reactive oxygen species (ROS) activity is enhanced which leads to increased oxidative stress. Metallic implant materials (such as titanium and its alloys) can induce increased amount of ROS, thereby critically influencing the healing process. This will consequently affect the bone remodeling process and increase healing time. The current review explores the ROS generation aspects associated with Ti-based metallic biomaterials and the various surface modification strategies developed specifically to improve antioxidant aspects of Ti surfaces. The initial part of this review explores the ROS generation associated with Ti implant materials and the associated ROS metabolism resulting in the formation of superoxide anion, hydroxyl radical and hydrogen peroxide radicals. This is followed by a comprehensive overview of various organic and inorganic coatings/materials for effective antioxidant surfaces and outlook in this research direction. Overall, this review highlights the critical need to consider the aspects of ROS generation as well as oxidative stress while designing an implant material and its effective surface engineering.
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Affiliation(s)
- Jithin Vishnu
- Department of Mechanical Engineering, Amrita Vishwa Vidyapeetham, Amritapuri Campus, Clappana 690525, India
| | - Praveenkumar Kesavan
- Department of Materials Engineering, Indian Institute of Science, Bangalore 560012, India
| | - Balakrishnan Shankar
- Department of Mechanical Engineering, Amrita Vishwa Vidyapeetham, Amritapuri Campus, Clappana 690525, India
| | - Katarzyna Dembińska
- Department of Environmental Microbiology and Biotechnology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland
| | - Maria Swiontek Brzezinska
- Department of Environmental Microbiology and Biotechnology, Faculty of Biological and Veterinary Sciences, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland
| | - Beata Kaczmarek-Szczepańska
- Department of Biomaterials and Cosmetic Chemistry, Faculty of Chemistry, Nicolaus Copernicus University in Toruń, 87-100 Toruń, Poland
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5
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Luo L, Pervaiz S, Clement MV. A superoxide-driven redox state promotes geroconversion and resistance to senolysis in replication-stress associated senescence. Redox Biol 2023; 64:102757. [PMID: 37285741 DOI: 10.1016/j.redox.2023.102757] [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: 04/08/2023] [Revised: 05/11/2023] [Accepted: 05/19/2023] [Indexed: 06/09/2023] Open
Abstract
Using S-phase synchronized RPE1-hTERT cells exposed to the DNA damaging agent, methyl methanesulfonate, we show the existence of a redox state associated with replication stress-induced senescence termed senescence-associated redox state (SA-redox state). SA-redox state is characterized by its reactivity with superoxide-sensing fluorescent probes such as dihydroethidine, lucigenin and mitosox and peroxynitrite or hydroxyl radical sensing probe hydroxyphenyl fluorescein (HPF) but not the hydrogen peroxide (H2O2) reactive fluorescent probe CM-H2DCFDA. Measurement of GSH and GSSH also reveals that SA-redox state mitigates the level of total GSH rather than oxidizes GSH to GSSG. Moreover, supporting the role of superoxide (O2.-) in the SA-redox state, we show that incubation of senescent RPE1-hTERT cells with the O2.- scavenger, Tiron, decreases the reactivity of SA-redox state with the oxidants' reactive probes lucigenin and HPF while the H2O2 antioxidant N-acetyl cysteine has no effect. SA-redox state does not participate in the loss of proliferative capacity, G2/M cell cycle arrest or the increase in SA-β-Gal activity. However, SA-redox state is associated with the activation of NF-κB, dictates the profile of the Senescence Associated Secretory Phenotype, increases TFEB protein level, promotes geroconversion evidenced by increased phosphorylation of S6K and S6 proteins, and influences senescent cells response to senolysis. Furthermore, we provide evidence for crosstalk between SA redox state, p53 and p21. While p53 mitigates the establishment of SA-redox state, p21 is critical for the sustained reinforcement of the SA-redox state involved in geroconversion and resistance to senolysis.
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Affiliation(s)
- Le Luo
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 117596, Singapore
| | - Shazib Pervaiz
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; NUS Medicine Healthy Longevity Program, National University of Singapore, Singapore; Integrated Science and Engineering Program, NUS Graduate School, National University of Singapore, Singapore; NUS Centre for Cancer Research (N2CR), Yong Loo Lin School of Medicine, National University of Singapore, Singapore; National University Cancer Institute, National University Health System, Singapore
| | - Marie-Veronique Clement
- Department of Biochemistry, Yong Loo Lin School of Medicine, National University of Singapore, 117596, Singapore; NUS Medicine Healthy Longevity Program, National University of Singapore, Singapore; Integrated Science and Engineering Program, NUS Graduate School, National University of Singapore, Singapore; NUS Centre for Cancer Research (N2CR), Yong Loo Lin School of Medicine, National University of Singapore, Singapore; National University Cancer Institute, National University Health System, Singapore.
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6
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Yu H, Song X, Yang F, Wang J, Sun M, Liu G, Ahmad N, Zhou Y, Zhang Y, Shi G, Zhang R, Liu J, Jiang X, Fu P, Chen G, Li J, Zhuang J, Sun M. Combined effects of vitamin C and cold atmospheric plasma-conditioned media against glioblastoma via hydrogen peroxide. Free Radic Biol Med 2023; 194:1-11. [PMID: 36436726 DOI: 10.1016/j.freeradbiomed.2022.11.028] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 11/16/2022] [Accepted: 11/16/2022] [Indexed: 11/27/2022]
Abstract
Glioblastoma is the most lethal intracranial malignant tumor, for which the five-year overall survival rate is approximately 5%. Here we explored the therapeutic combination of vitamin C and plasma-conditioned medium on glioblastoma cells in culture and as subcutaneous or intracranial xenografts in mice. The combination treatment reduced cell viability and proliferation while promoting apoptosis, and the effects were significantly stronger than with either treatment on its own. Similar results were obtained in the two xenograft models. Vitamin C appeared to upregulate aquaporin-3 and enhance the uptake of extracellular H2O2, while the combination treatment increased intracellular levels of reactive oxygen species including H2O2 and activated the JNK signaling pathway. The cytotoxic effects of the combination treatment were partially reversed by the specific JNK signaling inhibitor SP600125. Our results suggest that the combination of vitamin C and plasma-conditioned medium has therapeutic potential against glioblastoma, and they provide mechanistic insights that may help investigate this and other potential therapies in greater depth.
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Affiliation(s)
- Huidan Yu
- School of Life Sciences, Changchun University of Science and Technology, Changchun, 130022, China; Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China.
| | - Xueyan Song
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China.
| | - Fan Yang
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Jun Wang
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Mingjian Sun
- Measurement and Control Research Center Department of Control Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China
| | - Guangxin Liu
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Nafees Ahmad
- Institute of Biomedical and Genetic Engineering, Islamabad, Pakistan
| | - Yuanshuai Zhou
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Yina Zhang
- Neurological Department, Helios-Amper Clinic, Dachau, Germany
| | - Guohua Shi
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Ruobing Zhang
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China
| | - Jianping Liu
- Integrated Cardio Metabolic Centre, Karolinska Institute, Huddinge, Sweden
| | - Xiaobing Jiang
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Peng Fu
- Department of Neurosurgery, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China
| | - Gang Chen
- Department of Neurosurgery and Brain and Nerve Research Laboratory, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Jingmei Li
- School of Life Sciences, Changchun University of Science and Technology, Changchun, 130022, China.
| | - Jie Zhuang
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China.
| | - Minxuan Sun
- Jiangsu Key Laboratory of Medical Optics, Suzhou Institute of Biomedical Engineering and Technology, Chinese Academy of Sciences, Suzhou, China.
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7
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Lazarus E, Bays HE. Cancer and Obesity: An Obesity Medicine Association (OMA) Clinical Practice Statement (CPS) 2022. OBESITY PILLARS (ONLINE) 2022; 3:100026. [PMID: 37990728 PMCID: PMC10661911 DOI: 10.1016/j.obpill.2022.100026] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Accepted: 06/28/2022] [Indexed: 11/23/2023]
Abstract
Background This Obesity Medicine Association (OMA) Clinical Practice Statement (CPS) provides an overview of cancer and increased body fat. Methods The scientific information for this CPS is based upon published scientific citations, clinical perspectives of OMA authors, and peer review by the Obesity Medicine Association leadership. Results Topics include the increased risk of cancers among patients with obesity, cancer risk factor population-attributable fractions, genetic and epigenetic links between obesity and cancer, adiposopathic and mechanistic processes accounting for increased cancer risk among patients with obesity, the role of oxidative stress, and obesity-related cancers based upon Mendelian randomization and observational studies. Other topics include nutritional and physical activity principles for patients with obesity who either have cancer or are at risk for cancer, and preventive care as it relates to cancer and obesity. Conclusions Obesity is the second most common preventable cause of cancer and may be the most common preventable cause of cancer among nonsmokers. This Obesity Medicine Association (OMA) Clinical Practice Statement (CPS) on cancer is one of a series of OMA CPSs designed to assist clinicians in the care of patients with the disease of obesity. Patients with obesity are at greater risk of developing certain types of cancers, and treatment of obesity may influence the risk, onset, progression, and recurrence of cancer in patients with obesity.
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Affiliation(s)
- Ethan Lazarus
- Diplomate American Board of Obesity Medicine, Diplomate American Board of Family Medicine, President Obesity Medicine Association (2021- 2022); Delegate American Medical Association, Clinical Nutrition Center 5995 Greenwood Plaza Blvd, Ste 150, Greenwood Village, CO 80111
| | - Harold Edward Bays
- Diplomate of American Board of Obesity Medicine, Medical Director/President Louisville Metabolic and Atherosclerosis Research Center, Clinical Associate Professor/University of Louisville Medical School, 3288 Illinois Avenue, Louisville, KY, 40213, USA
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8
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Bakalova R, Aoki I, Zhelev Z, Higashi T. Cellular redox imbalance on the crossroad between mitochondrial dysfunction, senescence, and proliferation. Redox Biol 2022; 53:102337. [PMID: 35584568 PMCID: PMC9119829 DOI: 10.1016/j.redox.2022.102337] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2022] [Revised: 05/09/2022] [Accepted: 05/10/2022] [Indexed: 11/28/2022] Open
Abstract
Recent studies demonstrate that redox imbalance of NAD+/NADH and NADP+/NADPH pairs due to impaired respiration may trigger two “hidden” metabolic pathways on the crossroad between mitochondrial dysfunction, senescence, and proliferation: “β-oxidation shuttle” and “hydride transfer complex (HTC) cycle”. The “β-oxidation shuttle” induces NAD+/NADH redox imbalance in mitochondria, while HTC cycle maintains the redox balance of cytosolic NAD+/NADH, increasing the redox disbalance of NADP+/NADPH. Senescence appears to depend on high cytoplasmic NADH but low NADPH, while proliferation depends on high cytoplasmic NAD+ and NADPH that are under mitochondrial control. Thus, activating or deactivating the HTC cycle can be crucial to cell fate – senescence or proliferation. These pathways are a source of enormous cataplerosis. They support the production of large amounts of NADPH and intermediates for lipid synthesis and membrane biogenesis, as well as for DNA synthesis.
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Affiliation(s)
- Rumiana Bakalova
- Department of Molecular Imaging and Theranostics, National Institutes for Quantum Science and Technology (QST), Chiba, 263-8555, Japan.
| | - Ichio Aoki
- Department of Molecular Imaging and Theranostics, National Institutes for Quantum Science and Technology (QST), Chiba, 263-8555, Japan
| | - Zhivko Zhelev
- Department of Molecular Imaging and Theranostics, National Institutes for Quantum Science and Technology (QST), Chiba, 263-8555, Japan; Faculty of Medicine, Trakia University, Stara Zagora, Bulgaria & Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bugaria
| | - Tatsuya Higashi
- Department of Molecular Imaging and Theranostics, National Institutes for Quantum Science and Technology (QST), Chiba, 263-8555, Japan
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Matsumoto KI, Nakanishi I, Zhelev Z, Bakalova R, Aoki I. Nitroxyl Radical as a Theranostic Contrast Agent in Magnetic Resonance Redox Imaging. Antioxid Redox Signal 2022; 36:95-121. [PMID: 34148403 PMCID: PMC8792502 DOI: 10.1089/ars.2021.0110] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Significance:In vivo assessment of paramagnetic and diamagnetic conversions of nitroxyl radicals based on cyclic redox mechanism can be an index of tissue redox status. The redox mechanism of nitroxyl radicals, which enables their use as a normal tissue-selective radioprotector, is seen as being attractive on planning radiation therapy. Recent Advances:In vivo redox imaging using nitroxyl radicals as redox-sensitive contrast agents has been developed to assess tissue redox status. Chemical and biological behaviors depending on chemical structures of nitroxyl radical compounds have been understood in detail. Polymer types of nitroxyl radical contrast agents and/or nitroxyl radical-labeled drugs were designed for approaching theranostics. Critical Issues: Nitroxyl radicals as magnetic resonance imaging (MRI) contrast agents have several advantages compared with those used in electron paramagnetic resonance (EPR) imaging, while support by EPR spectroscopy is important to understand information from MRI. Redox-sensitive paramagnetic contrast agents having a medicinal benefit, that is, nitroxyl-labeled drug, have been developed and proposed. Future Directions: A development of suitable nitroxyl contrast agent for translational theranostic applications with high reaction specificity and low normal tissue toxicity is under progress. Nitroxyl radicals as redox-sensitive magnetic resonance contrast agents can be a useful tool to detect an abnormal tissue redox status such as disordered oxidative stress. Antioxid. Redox Signal. 36, 95-121.
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Affiliation(s)
- Ken-Ichiro Matsumoto
- Quantitative RedOx Sensing Group, Department of Radiation Regulatory Science Research, National Institute of Radiological Sciences, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
| | - Ikuo Nakanishi
- Quantum RedOx Chemistry Group, Institute for Quantum Life Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
| | - Zhivko Zhelev
- Medical Faculty, Trakia University, Stara Zagora, Bulgaria.,Institute of Biophysics and Biomedical Engineering, Bulgarian Academy of Sciences, Sofia, Bulgaria
| | - Rumiana Bakalova
- Functional and Molecular Imaging Goup, Department of Molecular Imaging and Theranostics, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
| | - Ichio Aoki
- Functional and Molecular Imaging Goup, Department of Molecular Imaging and Theranostics, Institute for Quantum Medical Science, Quantum Life and Medical Science Directorate, National Institutes for Quantum and Radiological Science and Technology, Chiba-shi, Japan
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10
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Vesga LC, Silva AMP, Bernal CC, Mendez-Sánchez SC, Romero Bohórquez AR. Tetrahydroquinoline/4,5-dihydroisoxazole hybrids with a remarkable effect over mitochondrial bioenergetic metabolism on melanoma cell line B16F10. Med Chem Res 2021. [DOI: 10.1007/s00044-021-02796-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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11
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Liu W, Qaed E, Zhu HG, Dong MX, Tang Z. Non-energy mechanism of phosphocreatine on the protection of cell survival. Biomed Pharmacother 2021; 141:111839. [PMID: 34174505 DOI: 10.1016/j.biopha.2021.111839] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 12/12/2022] Open
Abstract
If mitochondrial energy availability or oxidative metabolism is altered, patients will suffer from insufficient energy supply Phosphocreatine (PCr) not only acts as an energy carrier, but also acts as an antioxidant and defensive agent to maintain the integrity and stability of the membrane, to maintain ATP homeostasis through regulating mitochondrial respiration. Meanwhile, PCr can enhance calcium balance and reduce morphological pathological changes, ultimately, PCr helps to reduce apoptosis. On the other aspect, the activities of ATP synthase and MitCK play a crucial role in the maintenance of cellular energy metabolic function. It is interesting to note, PCr not only rises the activities of ATP synthase as well as MitCK, but also promotes these two enzymatic reactions. Additionally, PCr can also inhibit mitochondrial permeability transition in a concentration-dependent manner, prevent ROS and CytC from spilling into the cytoplasm, thereby inhibit the release of proapoptotic factors caspase-3 and caspase-9, and eventually, effectively prevent LPS-induced apoptosis of cells. Understandably, PCr prevents the apoptosis caused by abnormal mitochondrial energy metabolism and has a protective role in a non-energy manner. Moreover, recent studies have shown that PCr protects cell survival through PI3K/Akt/eNOS, MAPK pathway, and inhibition of Ang II-induced NF-κB activation. Furthermore, PCr antagonizes oxidative stress through the activation of PI3K/Akt/GSK3b intracellular pathway, PI3K/AKT-PGC1α signaling pathway, while through the promotion of SIRT3 expression to maintain normal cell metabolism. Interestingly, PCr results in delaying the time to enter pathological metabolism through the delayed activation of AMPK pathway, which is different from previous studies, now we propose the hypothesis that the "miRNA-JAK2/STAT3 -CypD pathway" may take part in protecting cells from apoptosis, PCr may be further be involved in the dynamic relationship between CypD and STAT3. Furthermore, we believe that PCr and CypD would be the central link to maintain cell survival and maintain cell stability and mitochondrial repair under the mitochondrial dysfunction caused by oxidative stress. This review provides the modern progress knowledge and views on the molecular mechanism and molecular targets of PCr in a non-energy way.
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Affiliation(s)
- Wu Liu
- Department of Pharmacology, Dalian Medical University, 9 West Section, South Road of Lushun, 116044 Dalian, China
| | - Eskandar Qaed
- Department of Pharmacology, Dalian Medical University, 9 West Section, South Road of Lushun, 116044 Dalian, China
| | - Han Guo Zhu
- Department of Pharmacology, Dalian Medical University, 9 West Section, South Road of Lushun, 116044 Dalian, China
| | - Ma Xiao Dong
- Department of Pharmacology, Dalian Medical University, 9 West Section, South Road of Lushun, 116044 Dalian, China
| | - ZeYao Tang
- Department of Pharmacology, Dalian Medical University, 9 West Section, South Road of Lushun, 116044 Dalian, China.
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12
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Liu Y, Li Y, Dong S, Han L, Guo R, Fu Y, Zhang S, Chen J. The risk and impact of organophosphate esters on the development of female-specific cancers: Comparative analysis of patients with benign and malignant tumors. JOURNAL OF HAZARDOUS MATERIALS 2021; 404:124020. [PMID: 33049558 DOI: 10.1016/j.jhazmat.2020.124020] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 09/09/2020] [Accepted: 09/11/2020] [Indexed: 06/11/2023]
Abstract
Environmental pollution has become a concern for public health. As endocrine disruptors, organophosphate esters (OPEs) causes many diseases via human exposure. However, there is limited research on the risk of OPE exposure to female-specific cancers. Blood measurements are biomarkers for chemical exposures by their definition. Thus, in the present study, 11 OPEs were analyzed in the plasma of patients with 4 female-specific tumors. 2-Ethylhexyl diphenyl phosphate (EHDPP) was detected at the highest levels in all groups. The Spearman correlation test results showed significantly positive correlations between some OPEs in each group, which indicated that those OPEs had similar sources and/or behaved similarly in the patients of each group. However, compared with different patient groups, obvious differences in the correlation results were noted, implying the differences in the metabolism of OPEs between different groups. The results of the correlation analysis showed that EHDPP concentration was associated with the risk of breast cancer (p < 0.05), while tri-n-butyl phosphate (TNBP), tris (methylphenyl) phosphate (TMPP), triphenyl phosphate (TPHP), and EHDPP concentrations were associated with the risk of cervical cancer (p < 0.05 or p < 0.01). These findings indicated that OPEs were associated with the risk of breast and cervical cancer.
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Affiliation(s)
- Yanhua Liu
- Department of Environmental Science, China Pharmaceutical University, Nanjing 211198, China
| | - Yang Li
- Department of Environmental Science, China Pharmaceutical University, Nanjing 211198, China; Blood Transfusion Department, Wuhan University Zhongnan Hospital, Wuhan 430071, China
| | - Shanshan Dong
- Department of Environmental Science, China Pharmaceutical University, Nanjing 211198, China
| | - Lu Han
- Department of Environmental Science, China Pharmaceutical University, Nanjing 211198, China
| | - Ruixin Guo
- Department of Environmental Science, China Pharmaceutical University, Nanjing 211198, China; Jiangsu Provincial Key Laboratory of Environmental Engineering, Nanjing 210036, China
| | - Yourong Fu
- Blood Transfusion Department, Wuhan University Zhongnan Hospital, Wuhan 430071, China
| | - Shenghu Zhang
- Nanjing Institute of Environmental Sciences, Ministry of Ecology and Environment, Nanjing 210042, China.
| | - Jianqiu Chen
- Department of Environmental Science, China Pharmaceutical University, Nanjing 211198, China.
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13
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Yee YH, Chong SJF, Kong LR, Goh BC, Pervaiz S. Sustained IKKβ phosphorylation and NF-κB activation by superoxide-induced peroxynitrite-mediated nitrotyrosine modification of B56γ3 and PP2A inactivation. Redox Biol 2020; 41:101834. [PMID: 33838472 PMCID: PMC8056462 DOI: 10.1016/j.redox.2020.101834] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Revised: 12/13/2020] [Accepted: 12/14/2020] [Indexed: 01/15/2023] Open
Abstract
Apart from its physiological role in inflammation and immunity, the nuclear factor-kappa B (NF-κB) protein complex has been implicated in tumorigenesis and its progression. Here, we provide evidence that a pro-oxidant milieu is an upstream effector of oncogenic NF-κB signaling. Through pharmacological or genetic inhibition of SOD1, we show that elevated intracellular superoxide (O2•-) mediates sustained IKK phosphorylation, and induces downstream degradation of IκBα, leading to the nuclear localization and transcriptional activation of NF-κB. Mechanistically, we show that such sustained NF-κB signaling is a function of protein phosphatase 2A (PP2A) inactivation brought about by the nitrative modification of its substrate-binding sub-unit B56γ. Importantly, the pro-oxidant driven NF-κB activation enhances the migratory and invasive potential of cancer cells. In summary, our work highlights the critical involvement of O2•--dependent peroxynitrite production in inhibiting PP2A-mediated dephosphorylation of IKK, thereby facilitating cancers to acquire an invasive phenotype. Given that NF-κB is a key player of chronic inflammation and carcinogenesis, our work unravels a novel synergistic node involving O2•--driven redox milieu and deregulated PP2A as a potential therapeutic target.
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Affiliation(s)
- Yi Hui Yee
- Cancer Science Institute of Singapore, National University of Singapore (NUS), Singapore
| | | | - Li Ren Kong
- Cancer Science Institute of Singapore, National University of Singapore (NUS), Singapore; Medical Research Council Cancer Unit, University of Cambridge, Cambridge, CB2, 0XZ, United Kingdom
| | - Boon Cher Goh
- Cancer Science Institute of Singapore, National University of Singapore (NUS), Singapore; Department of Hematology-Oncology, National University Health System, Singapore; Department of Medicine, Yong Loo Lin School of Medicine, NUS, Singapore; National University Cancer Institute, National University Health System, Singapore; Department of Pharmacology, Yong Loo Lin School of Medicine, NUS, Singapore
| | - Shazib Pervaiz
- National University Cancer Institute, National University Health System, Singapore; Department of Physiology, Yong Loo Lin School of Medicine, NUS, Singapore; Integrative Science and Engineering Programme, NUS Graduate School, NUS, Singapore; Faculté de Medicine, University of Paris, Paris, France.
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14
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Rodríguez-Hernández MA, de la Cruz-Ojeda P, López-Grueso MJ, Navarro-Villarán E, Requejo-Aguilar R, Castejón-Vega B, Negrete M, Gallego P, Vega-Ochoa Á, Victor VM, Cordero MD, Del Campo JA, Bárcena JA, Padilla CA, Muntané J. Integrated molecular signaling involving mitochondrial dysfunction and alteration of cell metabolism induced by tyrosine kinase inhibitors in cancer. Redox Biol 2020; 36:101510. [PMID: 32593127 PMCID: PMC7322178 DOI: 10.1016/j.redox.2020.101510] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 03/16/2020] [Indexed: 12/21/2022] Open
Abstract
Cancer cells have unlimited replicative potential, insensitivity to growth-inhibitory signals, evasion of apoptosis, cellular stress, and sustained angiogenesis, invasiveness and metastatic potential. Cancer cells adequately adapt cell metabolism and integrate several intracellular and redox signaling to promote cell survival in an inflammatory and hypoxic microenvironment in order to maintain/expand tumor phenotype. The administration of tyrosine kinase inhibitor (TKI) constitutes the recommended therapeutic strategy in different malignancies at advanced stages. There are important interrelationships between cell stress, redox status, mitochondrial function, metabolism and cellular signaling pathways leading to cell survival/death. The induction of apoptosis and cell cycle arrest widely related to the antitumoral properties of TKIs result from tightly controlled events involving different cellular compartments and signaling pathways. The aim of the present review is to update the most relevant studies dealing with the impact of TKI treatment on cell function. The induction of endoplasmic reticulum (ER) stress and Ca2+ disturbances, leading to alteration of mitochondrial function, redox status and phosphatidylinositol 3-kinase (PI3K)-protein kinase B (Akt)-mammalian target of rapamycin (mTOR) and AMP-activated protein kinase (AMPK) signaling pathways that involve cell metabolism reprogramming in cancer cells will be covered. Emphasis will be given to studies that identify key components of the integrated molecular pattern including receptor tyrosine kinase (RTK) downstream signaling, cell death and mitochondria-related events that appear to be involved in the resistance of cancer cells to TKI treatments.
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Affiliation(s)
- María A Rodríguez-Hernández
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain; Centro de Investigación Biomédica en red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - P de la Cruz-Ojeda
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain
| | - Mª José López-Grueso
- Department of Biochemistry and Molecular Biology, University of Cordoba, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Cordoba, Spain
| | - Elena Navarro-Villarán
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain; Centro de Investigación Biomédica en red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - Raquel Requejo-Aguilar
- Department of Biochemistry and Molecular Biology, University of Cordoba, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Cordoba, Spain
| | - Beatriz Castejón-Vega
- Research Laboratory, Oral Medicine Department, University of Seville, Seville, Spain
| | - María Negrete
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain
| | - Paloma Gallego
- Unit for the Clinical Management of Digestive Diseases, Hospital University "Nuestra Señora de Valme", Sevilla, Spain
| | - Álvaro Vega-Ochoa
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain
| | - Victor M Victor
- Centro de Investigación Biomédica en red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain; Service of Endocrinology and Nutrition, Hospital University "Doctor Peset", Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain; Department of Physiology, University of Valencia, Valencia, Spain
| | - Mario D Cordero
- Research Laboratory, Oral Medicine Department, University of Seville, Seville, Spain; Department of Physiology, Institute of Nutrition and Food Technology "José Mataix", Biomedical Research Center (CIBM), University of Granada, Armilla, Spain
| | - José A Del Campo
- Unit for the Clinical Management of Digestive Diseases, Hospital University "Nuestra Señora de Valme", Sevilla, Spain
| | - J Antonio Bárcena
- Department of Biochemistry and Molecular Biology, University of Cordoba, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Cordoba, Spain
| | - C Alicia Padilla
- Department of Biochemistry and Molecular Biology, University of Cordoba, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Cordoba, Spain
| | - Jordi Muntané
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain; Centro de Investigación Biomédica en red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain; Department of General Surgery, Hospital University "Virgen del Rocío"/IBiS/CSIC/University of Seville, Seville, Spain.
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15
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Peroxynitrite promotes serine-62 phosphorylation-dependent stabilization of the oncoprotein c-Myc. Redox Biol 2020; 34:101587. [PMID: 32512497 PMCID: PMC7280771 DOI: 10.1016/j.redox.2020.101587] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/22/2020] [Accepted: 05/14/2020] [Indexed: 12/13/2022] Open
Abstract
Stabilization of c-Myc oncoprotein is dependent on post-translational modifications, especially its phosphorylation at serine-62 (S62), which enhances its tumorigenic potential. Herein we report that increase in intracellular superoxide induces phospho-stabilization and activation of c-Myc in cancer cells. Importantly, sustained phospho-S62 c-Myc was necessary for promoting superoxide dependent chemoresistance as non-phosphorylatable S62A c-Myc was insensitive to the redox impact when subjected to chemotherapeutic insults. This redox-dependent sustained S62 phosphorylation occurs through nitrative inhibition of phosphatase, PP2A, brought about by peroxynitrite, a reaction product of superoxide and nitric oxide. We identified a conserved tyrosine residue (Y238) in the c-Myc targeting subunit B56α of PP2A, which is selectively amenable to nitrative inhibition, further preventing holoenzyme assembly. In summary, we have established a novel mechanism wherein the pro-oxidant microenvironment stimulates a pro-survival milieu and reinforces tumor maintenance as a functional consequence of c-Myc activation through its sustained S62 phosphorylation via inhibition of phosphatase PP2A. Significance statement Increased peroxynitrite signaling in tumors causes sustained S62 c-Myc phosphorylation by PP2A inhibition. This is critical to promoting c-Myc stabilization and activation which promotes chemoresistance and provides significant proliferative and growth advantages to osteosarcomas.
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16
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The Double-Faced Role of Nitric Oxide and Reactive Oxygen Species in Solid Tumors. Antioxidants (Basel) 2020; 9:antiox9050374. [PMID: 32365852 PMCID: PMC7278755 DOI: 10.3390/antiox9050374] [Citation(s) in RCA: 60] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2020] [Revised: 04/24/2020] [Accepted: 04/27/2020] [Indexed: 02/08/2023] Open
Abstract
Disturbed redox homeostasis represents a hallmark of cancer phenotypes, affecting cellular metabolism and redox signaling. Since reactive oxygen and nitrogen species (ROS/RNS) are involved in regulation of proliferation and apoptosis, they may play a double-faced role in cancer, entailing protumorigenic and tumor-suppressing effects in early and later stages, respectively. In addition, ROS and RNS impact the activity and communication of all tumor constituents, mediating their reprogramming from anti- to protumorigenic phenotypes, and vice versa. An important role in this dichotomic action is played by the variable amounts of O2 in the tumor microenvironment, which dictates the ultimate outcome of the influence of ROS/RNS on carcinogenesis. Moreover, ROS/RNS levels remarkably influence the cancer response to therapy. The relevance of ROS/RNS signaling in solid tumors is witnessed by the emergence of novel targeted treatments of solid tumors with compounds that target ROS/RNS action and production, such as tyrosine kinase inhibitors and monoclonal antibodies, which might contribute to the complexity of redox regulation in cancer. Prospectively, the dual role of ROS/RNS in the different stages of tumorigenesis through different impact on oxidation and nitrosylation may also allow development of tailored diagnostic and therapeutic approaches.
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17
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van Dam L, Dansen TB. Cross-talk between redox signalling and protein aggregation. Biochem Soc Trans 2020; 48:379-397. [PMID: 32311028 PMCID: PMC7200635 DOI: 10.1042/bst20190054] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/18/2020] [Accepted: 03/24/2020] [Indexed: 02/06/2023]
Abstract
It is well established that both an increase in reactive oxygen species (ROS: i.e. O2•-, H2O2 and OH•), as well as protein aggregation, accompany ageing and proteinopathies such as Parkinson's and Alzheimer's disease. However, it is far from clear whether there is a causal relation between the two. This review describes how protein aggregation can be affected both by redox signalling (downstream of H2O2), as well as by ROS-induced damage, and aims to give an overview of the current knowledge of how redox signalling affects protein aggregation and vice versa. Redox signalling has been shown to play roles in almost every step of protein aggregation and amyloid formation, from aggregation initiation to the rapid oligomerization of large amyloids, which tend to be less toxic than oligomeric prefibrillar aggregates. We explore the hypothesis that age-associated elevated ROS production could be part of a redox signalling-dependent-stress response in an attempt to curb protein aggregation and minimize toxicity.
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Affiliation(s)
- Loes van Dam
- Center for Molecular Medicine, Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, 3584CG Utrecht, The Netherlands
| | - Tobias B. Dansen
- Center for Molecular Medicine, Molecular Cancer Research, University Medical Center Utrecht, Universiteitsweg 100, 3584CG Utrecht, The Netherlands
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18
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Clement M, Luo L. Organismal Aging and Oxidants beyond Macromolecules Damage. Proteomics 2020; 20:e1800400. [DOI: 10.1002/pmic.201800400] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Revised: 10/20/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Marie‐Veronique Clement
- Department of BiochemistryYong Loo Lin School of MedicineNational University of Singapore Singapore 117596 Singapore
- National University of Singapore Graduate School for Integrative Sciences and Engineering Singapore 117456 Singapore
| | - Le Luo
- Department of BiochemistryYong Loo Lin School of MedicineNational University of Singapore Singapore 117596 Singapore
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19
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Wang Y, Wang X, Zhang L, Huang Y, Bi L, Lv C, Chen L. A ratiometric fluorescent probe for detecting the endogenous biological signaling molecule superoxide anion and bioimaging during tumor treatment. J Mater Chem B 2020; 8:1017-1025. [PMID: 31934713 DOI: 10.1039/c9tb02453k] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tumor resistance and drug-induced nephrotoxicity pose great challenges to the clinical treatment of tumors, and they also limit the clinical application of oncology drugs. Finding an effective adjuvant, which can sensitize tumor treatment, is an effective method for tumor treatment. Here, we developed a ratiometric fluorescent probe, TP-Tfs, for superoxide anion (O2˙-) detection in living cells and in vivo during the process of tumor treatment for the first time. TP-Tfs with simple synthesis steps and high yields can detect O2˙- sensitively and selectively, and the detection limit was determined to be 37 nM. Using TP-Tfs, we found that cis-diaminodichloroplatinum(ii) (DDP) was effective in treating tumors by inducing O2˙- burst. Curcumin (cum) can sensitize tumor treatment effectively by inducing more severe O2˙- burst. These results indicated that the probe TP-Tfs was a promising candidate for drug screening and tumor treatment evaluation.
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Affiliation(s)
- Yue Wang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiaoyan Wang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China. and School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Li Zhang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China. and University of Chinese Academy of Sciences, Beijing 100049, China
| | - Yan Huang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China. and School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Liyan Bi
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Changjun Lv
- School of Pharmacy, Binzhou Medical University, Yantai 264003, China
| | - Lingxin Chen
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, China. and School of Pharmacy, Binzhou Medical University, Yantai 264003, China and Center for Ocean Mega-Science, Chinese Academy of Sciences, Qingdao 266071, China and Department of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, China
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20
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Jeong H, Park S, Park K, Kim M, Hong J. Sustained Nitric Oxide-Providing Small Molecule and Precise Release Behavior Study for Glaucoma Treatment. Mol Pharm 2020; 17:656-665. [PMID: 31913044 DOI: 10.1021/acs.molpharmaceut.9b01137] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Incidence ofglaucoma, a severe disease leading to irreversible loss of vision, is increasing with global aging populations. Lowering intraocular pressure (IOP) is the only proven treatment method for glaucoma. Nitric oxide (NO) is an emerging material targeting the conventional outflow pathway by relaxing the trabecular meshwork (TM). However, there is little understanding on the NO level effective in IOP lowering without toxicity. Here, we report a novel long-term NO-releasing polydiazeniumdiolate (NOP) that enables lowering IOP via the conventional outflow pathway. NOP is composed of carbon-bound polydiazeniumdiolate, a stable NO donor moiety. NO release was monitored with accurate parameters by real-time detection of gas and analysis of the accumulated release profile. Based on the NO release information, the selected safe level of NOP exhibited effective TM relaxation and a potential IOP lowering effect in vivo without side effects. This work provides new insights into nitric oxide release behavior that should be considered for glaucoma treatment.
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Affiliation(s)
- Hyejoong Jeong
- Department of Chemical and Biomolecular Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Sujin Park
- Department of Ophthalmology , Dongguk University, Ilsan Hospital , Goyang 10326 , Republic of Korea
| | - Kyungtae Park
- Department of Chemical and Biomolecular Engineering , Yonsei University , Seoul 03722 , Republic of Korea
| | - Martha Kim
- Department of Ophthalmology , Dongguk University, Ilsan Hospital , Goyang 10326 , Republic of Korea
| | - Jinkee Hong
- Department of Chemical and Biomolecular Engineering , Yonsei University , Seoul 03722 , Republic of Korea
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21
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Pervaiz S, Bellot GL, Lemoine A, Brenner C. Redox signaling in the pathogenesis of human disease and the regulatory role of autophagy. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 352:189-214. [DOI: 10.1016/bs.ircmb.2020.03.002] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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22
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Raimondi V, Ciccarese F, Ciminale V. Oncogenic pathways and the electron transport chain: a dangeROS liaison. Br J Cancer 2019; 122:168-181. [PMID: 31819197 PMCID: PMC7052168 DOI: 10.1038/s41416-019-0651-y] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 10/30/2019] [Accepted: 11/05/2019] [Indexed: 02/07/2023] Open
Abstract
Driver mutations in oncogenic pathways, rewiring of cellular metabolism and altered ROS homoeostasis are intimately connected hallmarks of cancer. Electrons derived from different metabolic processes are channelled into the mitochondrial electron transport chain (ETC) to fuel the oxidative phosphorylation process. Electrons leaking from the ETC can prematurely react with oxygen, resulting in the generation of reactive oxygen species (ROS). Several signalling pathways are affected by ROS, which act as second messengers controlling cell proliferation and survival. On the other hand, oncogenic pathways hijack the ETC, enhancing its ROS-producing capacity by increasing electron flow or by impinging on the structure and organisation of the ETC. In this review, we focus on the ETC as a source of ROS and its modulation by oncogenic pathways, which generates a vicious cycle that resets ROS levels to a higher homoeostatic set point, sustaining the cancer cell phenotype.
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Affiliation(s)
| | | | - Vincenzo Ciminale
- Veneto Institute of Oncology IOV - IRCCS, Padua, Italy. .,Department of Surgery, Oncology and Gastroenterology, University of Padua, Padua, Italy.
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23
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New potential biomarker for stratification of patients for pharmacological vitamin C in adjuvant settings of cancer therapy. Redox Biol 2019; 28:101357. [PMID: 31678721 PMCID: PMC6920102 DOI: 10.1016/j.redox.2019.101357] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 10/17/2019] [Accepted: 10/21/2019] [Indexed: 12/31/2022] Open
Abstract
Our graphical review expands the analysis of cancer vulnerabilities for high dose vitamin C, based on several facts, illustrating the cytotoxic potential of the ascorbate free radical (AFR) via impairment of mitochondrial respiration and the mechanisms of its elimination in mammals by the membrane-bound NADH:cytochrome b5 oxidoreductase 3 (Cyb5R3). We propose that vitamin C can function in “protective mode” or “destructive mode” affecting cellular homeostasis, depending on the intracellular “steady-state” concentration of AFR and differential expression/activity of Cyb5R3 in cancerous and normal cells. Thus, a specific anti-cancer effect can be achieved at high doses of vitamin C therapy. The review is intended for a wide audience of readers – from students to specialists in the field. The ascorbate radical could impair mitochondrial respiration via cytochrome c reduction. The ascorbate radical could mediate the imbalance of the coenzyme Q “pool” in cancer cells. The selective cytotoxicity of vitamin C in cancer could be mediated by Cyb5R3/VDAC1. Low/normal doses of vitamin C act in a “protective mode” for normal/cancer cells. High doses of vitamin C act in a “destructive mode” for cancer cells only.
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24
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Gonçalves DA, Xisto R, Gonçalves JD, da Silva DB, Moura Soares JP, Icimoto MY, Sant’Anna C, Gimenez M, de Angelis K, Llesuy S, Fernandes DC, Laurindo F, Jasiulionis MG, Melo FHMD. Imbalance between nitric oxide and superoxide anion induced by uncoupled nitric oxide synthase contributes to human melanoma development. Int J Biochem Cell Biol 2019; 115:105592. [DOI: 10.1016/j.biocel.2019.105592] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 07/20/2019] [Accepted: 08/19/2019] [Indexed: 12/28/2022]
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25
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Mitra S, Nguyen LN, Akter M, Park G, Choi EH, Kaushik NK. Impact of ROS Generated by Chemical, Physical, and Plasma Techniques on Cancer Attenuation. Cancers (Basel) 2019; 11:E1030. [PMID: 31336648 PMCID: PMC6678366 DOI: 10.3390/cancers11071030] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Revised: 07/16/2019] [Accepted: 07/17/2019] [Indexed: 12/17/2022] Open
Abstract
For the last few decades, while significant improvements have been achieved in cancer therapy, this family of diseases is still considered one of the deadliest threats to human health. Thus, there is an urgent need to find novel strategies in order to tackle this vital medical issue. One of the most pivotal causes of cancer initiation is the presence of reactive oxygen species (ROS) inside the body. Interestingly, on the other hand, high doses of ROS possess the capability to damage malignant cells. Moreover, several important intracellular mechanisms occur during the production of ROS. For these reasons, inducing ROS inside the biological system by utilizing external physical or chemical methods is a promising approach to inhibit the growth of cancer cells. Beside conventional technologies, cold atmospheric plasmas are now receiving much attention as an emerging therapeutic tool for cancer treatment due to their unique biophysical behavior, including the ability to generate considerable amounts of ROS. This review summarizes the important mechanisms of ROS generated by chemical, physical, and plasma approaches. We also emphasize the biological effects and cancer inhibition capabilities of ROS.
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Affiliation(s)
- Sarmistha Mitra
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Plasma Bio-display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea
| | - Linh Nhat Nguyen
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Plasma Bio-display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea
| | - Mahmuda Akter
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Plasma Bio-display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea
| | - Gyungsoon Park
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Plasma Bio-display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea
| | - Eun Ha Choi
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Plasma Bio-display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea.
| | - Nagendra Kumar Kaushik
- Plasma Bioscience Research Center, Applied Plasma Medicine Center, Department of Plasma Bio-display, Department of Electrical and Biological Physics, Kwangwoon University, Seoul 01897, Korea.
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Pohl SÖG, Pervaiz S, Dharmarajan A, Agostino M. Gene expression analysis of heat-shock proteins and redox regulators reveals combinatorial prognostic markers in carcinomas of the gastrointestinal tract. Redox Biol 2019; 25:101060. [PMID: 30578123 PMCID: PMC6859565 DOI: 10.1016/j.redox.2018.11.018] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2018] [Revised: 11/14/2018] [Accepted: 11/25/2018] [Indexed: 01/18/2023] Open
Abstract
Heat shock proteins (HSPs) are a large family of ubiquitously expressed proteins with diverse functions, including protein assembly and folding/unfolding. These proteins have been associated with the progression of various gastrointestinal tumours. Dysregulation of cellular redox has also been associated with gastrointestinal carcinogenesis, however, a link between HSPs and dysregulation of cellular redox in carcinogenesis remains unclear. In this study, we analysed mRNA co-expression and methylation patterns, as well as performed survival analysis and gene set enrichment analysis, on gastrointestinal cancer data sets (oesophageal, stomach and colorectal carcinomas) to determine whether HSP activity and cellular redox dysregulation are linked. A widespread relationship between HSPs and cellular redox was identified, with specific combinatorial co-expression patterns demonstrated to significantly alter patient survival outcomes. This comprehensive analysis provides the foundation for future studies aimed at deciphering the mechanisms of cooperativity between HSPs and redox regulatory enzymes, which may be a target for future therapeutic intervention for gastrointestinal tumours.
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Affiliation(s)
- Sebastian Öther-Gee Pohl
- Stem Cell and Cancer Biology Laboratory, Curtin University, Perth, WA, Australia; School of Pharmacy and Biomedical Sciences, Curtin University, Perth, WA 6102, Australia; Curtin Health and Innovation Research Institute, Curtin University, Perth, WA 6102, Australia
| | - Shazib Pervaiz
- School of Pharmacy and Biomedical Sciences, Curtin University, Perth, WA 6102, Australia; Department of Physiology and Medical Science Cluster Cancer Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117593, Singapore; NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore 117456, Singapore; National University Cancer Institute, National University Health System, Singapore 119074, Singapore
| | - Arun Dharmarajan
- Stem Cell and Cancer Biology Laboratory, Curtin University, Perth, WA, Australia; School of Pharmacy and Biomedical Sciences, Curtin University, Perth, WA 6102, Australia; Curtin Health and Innovation Research Institute, Curtin University, Perth, WA 6102, Australia
| | - Mark Agostino
- Stem Cell and Cancer Biology Laboratory, Curtin University, Perth, WA, Australia; School of Pharmacy and Biomedical Sciences, Curtin University, Perth, WA 6102, Australia; Curtin Health and Innovation Research Institute, Curtin University, Perth, WA 6102, Australia; Curtin Institute for Computation, Curtin University, Perth, WA 6102, Australia.
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27
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Li DP, Chen YL, Jiang HY, Chen Y, Zeng XQ, Xu LL, Ye Y, Ke CQ, Lin G, Wang JY, Gao H. Phosphocreatine attenuates Gynura segetum-induced hepatocyte apoptosis via a SIRT3-SOD2-mitochondrial reactive oxygen species pathway. DRUG DESIGN DEVELOPMENT AND THERAPY 2019; 13:2081-2096. [PMID: 31417240 PMCID: PMC6602055 DOI: 10.2147/dddt.s203564] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 05/15/2019] [Indexed: 12/18/2022]
Abstract
Purpose: To investigate the mitochondria-related mechanism of Gynura segetum (GS)-induced apoptosis and the protective effect of phosphocreatine (PCr), a mitochondrial respiration regulator. Methods: First, the mechanism was explored in human hepatocyte cell line. The mitochondrial oxidative stress was determined by fluorescence assay. The level of sirtuin 3 (SIRT3), acetylated superoxide dismutase 2 (Ac-SOD2), SOD2, and apoptosis were detected by Western blotting. Mito-TEMPO and cell lines of viral vector-mediated overexpression of SIRT3 and SIRT3H248Y were used to further verify the mechanism of GS-induced apoptosis. GS-induced liver injury mice models were built by GS through intragastric administration and interfered by PCr through intraperitoneal injection. A total of 30 C57BL/6J mice were assigned to 5 groups and treated with either saline, PCr (100 mg/kg), GS (30 g/kg), or PCr (50 or 100 mg/kg)+GS (30 g/kg). Liver hematoxylin and eosin (HE) staining, immunohistochemical analysis, and blood biochemical evaluation were performed. Results: GS induced hepatocyte apoptosis and elevated levels of mitochondrial ROS in L-02 cells. The expression of SIRT3 was decreased. Downregulation of SIRT3 was associated with increased levels of Ac-SOD2, which is the inactivated enzymatic form of SOD2. Conversely, when overexpressing SIRT3 in GS-treated cells, SOD2 activity was restored, and mitochondrial ROS levels and hepatocyte apoptosis declined. Upon administration of PCr to GS-treated cells, they exhibited a significant upregulation of SIRT3 and were protected against apoptosis. In animal experiments, serum ALT level and mitochondrial ROS of the mice treated with GS and 50 mg/kg PCr were significantly attenuated compared with only GS treated. The changes in SIRT3 expression were also consistent with the in vitro results. In addition, immunohistochemical analysis of the mouse liver showed that Ac-SOD2 was decreased in the PCr and GS co-treated group compared with GS treated group. Conclusion: GS caused liver injury by dysregulating mitochondrial ROS generation via a SIRT3-SOD2 pathway. PCr is a potential agent to treat GS-induced liver injury by mitochondrial protection.
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Affiliation(s)
- Dong-Ping Li
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Ying-Ling Chen
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Hong-Yue Jiang
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yun Chen
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Xiao-Qing Zeng
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Li-Li Xu
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yang Ye
- State Key Laboratory of Drug Research & Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Pudong, People's Republic of China
| | - Chang-Qiang Ke
- State Key Laboratory of Drug Research & Natural Products Chemistry Department, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Pudong, People's Republic of China
| | - Ge Lin
- School of Biomedical Sciences, Faculty of Medicine, The Chinese University of Hong Kong, Hong Kong, Hong Kong SAR
| | - Ji-Yao Wang
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China.,Evidance-based Medicine Center of Fudan University , Shanghai, People's Republic of China
| | - Hong Gao
- Department of Gastroenterology and Hepatology, Zhongshan Hospital, Fudan University, Shanghai, People's Republic of China.,Evidance-based Medicine Center of Fudan University , Shanghai, People's Republic of China
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Tan LTH, Mahendra CK, Yow YY, Chan KG, Khan TM, Lee LH, Goh BH. Streptomyces sp. MUM273b: A mangrove-derived potential source for antioxidant and UVB radiation protectants. Microbiologyopen 2019; 8:e859. [PMID: 31199601 PMCID: PMC6813444 DOI: 10.1002/mbo3.859] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2018] [Revised: 04/13/2019] [Accepted: 04/17/2019] [Indexed: 01/30/2023] Open
Abstract
Microbial natural products serve as a good source for antioxidants. The mangrove‐derived Streptomyces bacteria have been evidenced to produce antioxidative compounds. This study reports the isolation of Streptomyces sp. MUM273b from mangrove soil that may serve as a promising source of antioxidants and UV‐protective agents. Identification and characterization methods determine that strain MUM273b belongs to the genus Streptomyces. The MUM273b extract exhibits antioxidant activities, including DPPH, ABTS, and superoxide radical scavenging activities and also metal‐chelating activity. The MUM273b extract was also shown to inhibit the production of malondialdehyde in metal‐induced lipid peroxidation. Strong correlation between the antioxidant activities and the total phenolic content of MUM273b extract was shown. In addition, MUM273b extract exhibited cytoprotective effect on the UVB‐induced cell death in HaCaT keratinocytes. Gas chromatography–mass spectrometry analysis detected phenolics, pyrrole, pyrazine, ester, and cyclic dipeptides in MUM273b extract. In summary, Streptomyces MUM273b extract portrays an exciting avenue for future antioxidative drugs and cosmeceuticals development.
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Affiliation(s)
- Loh Teng-Hern Tan
- Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway Selangor Darul Ehsan, Malaysia.,Biofunctional Molecule Exploratory (BMEX) Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor Darul Ehsan, Malaysia.,Institute of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, PR China
| | - Camille Keisha Mahendra
- Biofunctional Molecule Exploratory (BMEX) Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Yoon-Yen Yow
- Department of Biological Sciences, School of Science and Technology, Sunway University, Bandar Sunway, Selangor, Malaysia
| | - Kok-Gan Chan
- International Genome Centre, Jiangsu University, Zhenjiang, China.,Division of Genetics and Molecular Biology, Institute of Biological Sciences, Faculty of Science, University of Malaya, Kuala Lumpur, Malaysia
| | - Tahir Mehmood Khan
- Biofunctional Molecule Exploratory (BMEX) Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor Darul Ehsan, Malaysia.,The Institute of Pharmaceutical Sciences, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Learn-Han Lee
- Novel Bacteria and Drug Discovery Research Group, Microbiome and Bioresource Research Strength Jeffrey Cheah School of Medicine and Health Sciences, Monash University Malaysia, Bandar Sunway Selangor Darul Ehsan, Malaysia.,The Institute of Pharmaceutical Sciences, University of Veterinary and Animal Sciences, Lahore, Pakistan
| | - Bey-Hing Goh
- Biofunctional Molecule Exploratory (BMEX) Research Group, School of Pharmacy, Monash University Malaysia, Bandar Sunway, Selangor Darul Ehsan, Malaysia.,The Institute of Pharmaceutical Sciences, University of Veterinary and Animal Sciences, Lahore, Pakistan
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Lee YJ, Kim WI, Kim SY, Cho SW, Nam HS, Lee SH, Cho MK. Flavonoid morin inhibits proliferation and induces apoptosis of melanoma cells by regulating reactive oxygen species, Sp1 and Mcl-1. Arch Pharm Res 2019; 42:531-542. [PMID: 31049822 DOI: 10.1007/s12272-019-01158-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2018] [Accepted: 04/22/2019] [Indexed: 01/21/2023]
Abstract
Reactive oxygen species (ROS) is associated with cancer progression in different cancers, including melanoma. It also affects specificity protein (Sp1), a transcription factor. Flavonoid morin is known to inhibit growth of cancer cells, including lung cancer and breast cancer. Herein, we hypothesized that morin can inhibit cancer activities in melanoma by altering ROS generation. The aim of this study is to determine the effects of morin and its underlying mechanisms in melanoma cells. Effects of morin on cell proliferation and apoptosis were determined using standardized assays. Changes in pro-apoptotic and anti-apoptotic proteins were analyzed by western blot analysis. Cellular ROS levels and mitochondrial function were evaluated by measuring DCF-DA fluorescence and rhodamine-123 fluorescence intensities, respectively. Morin induced ROS production and apoptosis, as presented by increased proportion of cells with Annexin V-PE(+) staining and sub-G0/G1 peak in cell cycle analysis. It also downregulated Sp1, Mcl-1, Bcl-2, and caspase-3 but upregulated cleaved caspase-3, Bax, and PUMA. In immunohistochemical staining, Sp1 was overexpressed in melanoma tissues compared to normal skin tissues. Collectively, our data suggest that morin can induce apoptosis of melanoma cells by regulating pro-apoptotic and anti-apoptotic proteins through ROS, and may be a potential substance for treatment of melanoma.
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Affiliation(s)
- Yoon Jin Lee
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Woo Il Kim
- Department of Dermatology, Soonchunhyang University Hospital, Seoul, 04401, Republic of Korea
| | - Soo Young Kim
- Department of Dermatology, Soonchunhyang University Hospital, Seoul, 04401, Republic of Korea
| | - Sung Woo Cho
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Hae Seon Nam
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Sang Han Lee
- Molecular Cancer Research, Soonchunhyang University College of Medicine, Cheonan, 31151, Republic of Korea
| | - Moon Kyun Cho
- Department of Dermatology, Soonchunhyang University Hospital, Seoul, 04401, Republic of Korea.
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30
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Fatima Q, Amin S, Kawa IA, Jeelani H, Manzoor S, Rizvi SM, Rashid F. Evaluation of antioxidant defense markers in relation to hormonal and insulin parameters in women with polycystic ovary syndrome (PCOS): A case-control study. Diabetes Metab Syndr 2019; 13:1957-1961. [PMID: 31235121 DOI: 10.1016/j.dsx.2019.04.032] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 04/22/2019] [Indexed: 01/09/2023]
Abstract
AIM Polycystic ovary syndrome (PCOS) is a composite heterogeneous condition with multifactorial etiology like genetic, environmental factors and oxidative stress. The exact pro-oxidant and antioxidant status in PCOS patients has not yet been fully established. We designed prospective study aimed to explore the association of PCOS and oxidative stress and examine the relationship of oxidative stress biomarkers with insulin parameters. METHODS Two groups were included: study group including 85 women with PCOS and control group of 85 healthy volunteers. Biochemical, Hormonal and insulin parameters were measured. Vitamin C, vitamin E, nitric oxide and activities of antioxidant enzymes were estimated using spectrophotometric methods. RESULTS Subjects with PCOS had poor antioxidant status as reflected by significantly low levels of glutathione, vitamin C & E and considerably increased activities of antioxidant enzymes like glutathione peroxidase, glutathione reductase and glutathione transferase as compared to those without PCOS. At the same time insulin levels were found to be significantly high and a positive correlation between oxidative stress and insulin parameters was observed in PCOS. CONCLUSION Low levels of antioxidants and increased oxidative stress with insulin resistance along with the observed correlation between these parameters suggest that women with PCOS are under oxidative stress which supports the concept that oxidative stress is involved in PCOS pathophysiology. Thus oxidative stress could be a contributory factor to future cardiovascular disease risk in these women in addition to known features like dyslipidemia, central obesity, etc.
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Affiliation(s)
- Qudsia Fatima
- Department of Biochemistry, University of Kashmir, Srinagar, India; Department of Clinical Biochemistry, University of Kashmir, Srinagar, India
| | - Shajrul Amin
- Department of Biochemistry, University of Kashmir, Srinagar, India
| | - Iram Ashaq Kawa
- Department of Biochemistry, University of Kashmir, Srinagar, India; Department of Clinical Biochemistry, University of Kashmir, Srinagar, India
| | - Humira Jeelani
- Department of Biochemistry, University of Kashmir, Srinagar, India; Department of Clinical Biochemistry, University of Kashmir, Srinagar, India
| | - Saika Manzoor
- Department of Biochemistry, University of Kashmir, Srinagar, India; Department of Clinical Biochemistry, University of Kashmir, Srinagar, India
| | - Syeed Masuma Rizvi
- Department of Obstetrics and Gynecology, GMC, LD Hospital, Srinagar, India
| | - Fouzia Rashid
- Department of Clinical Biochemistry, University of Kashmir, Srinagar, India.
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31
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Ebrahimi S, Soltani A, Hashemy SI. Oxidative stress in cervical cancer pathogenesis and resistance to therapy. J Cell Biochem 2019; 120:6868-6877. [PMID: 30426530 DOI: 10.1002/jcb.28007] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2018] [Accepted: 10/10/2018] [Indexed: 01/24/2023]
Abstract
Cervical cancer (CC) is one of the most common cancers among females, and it is most notable in developing countries. The exact etiology of CC is poorly understood; but, smoking, oral contraceptives, immunosuppression, and infection with human papillomavirus (HPV) may increase the risk of CC. There is also an association between CC and oxidative stress. Oxidative stress is caused by a disturbed oxidant-antioxidant balance in favor of the former, leading to an excessive generation of free radicals, particularly reactive oxygen species (ROS), and subsequently to biological damages. Thus, redox enzymatic and nonenzymatic regulators are required to maintain the redox homeostasis. Dysregulated antioxidants system and the pathogenic role of oxidative stress in CC have been investigated in several clinical and preclinical studies. In this study, we reviewed studies that have addressed the cross-talk between oxidative stress and CC pathogenesis and resistance to therapy.
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Affiliation(s)
- Safieh Ebrahimi
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Arash Soltani
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Isaac Hashemy
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran
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Biodentine ™ Boosts, WhiteProRoot ®MTA Increases and Life ® Suppresses Odontoblast Activity. MATERIALS 2019; 12:ma12071184. [PMID: 30978943 PMCID: PMC6479701 DOI: 10.3390/ma12071184] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 04/06/2019] [Accepted: 04/09/2019] [Indexed: 12/12/2022]
Abstract
(1) Background: When pulp exposure occurs, reparative dentinogenesis can be induced by direct pulp capping to maintain the vitality and function of the tissue. The aim of this work was to assess the cytotoxicity and bioactivity of three different direct pulp capping materials, calcium hydroxide (Life®), mineral trioxide aggregate (WhiteProRoot®MTA) and calcium silicate (Biodentine™), in an odontoblast-like mouse cell line (MDPC-23). (2) Methods: Metabolic activity was assessed by the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide test (MTT)assay, viability by the sulforhodamine B (SRB) assay, and the type of death and cell cycle analysis by flow cytometry. Alkaline phosphatase was evaluated by polymerase chain reaction (PCR), and dentin sialoprotein expression was assessed by immunocytochemistry. Mineralization was determined by the Alizarin Red S colorimetric assay and quantified by spectrophotometry. (3) Results: Life® induced a decrease in metabolic activity and viability, which is associated with an increase cell death. WhiteProRoot®MTA and Biodentine™ induced similar effects in cytotoxicity assays, with an increase in the expression of dentin sialoprotein (DSP) and formation of mineralized deposits, especially with Biodentine™. (4) Conclusions: The results of WhiteProRoot®MTA confirm its indication for these therapies, justifying its recognition as the “gold standard”. Biodentine™ may be an alternative, since they promote the same cellular response that mineral trioxide aggregate (MTA) does.
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"Redox Imaging" to Distinguish Cells with Different Proliferative Indexes: Superoxide, Hydroperoxides, and Their Ratio as Potential Biomarkers. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:6373685. [PMID: 31089411 PMCID: PMC6476105 DOI: 10.1155/2019/6373685] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/22/2018] [Revised: 11/12/2018] [Accepted: 01/09/2019] [Indexed: 01/11/2023]
Abstract
The present study was directed to the development of EPR methodology for distinguishing cells with different proliferative activities, using “redox imaging.” Three nitroxide radicals were used as redox sensors: (a) mito-TEMPO—cell-penetrating and localized mainly in the mitochondria; (b) methoxy-TEMPO—cell-penetrating and randomly distributed between the cytoplasm and the intracellular organelles; and (c) carboxy-PROXYL—nonpenetrating in living cells and evenly distributed in the extracellular environment. The experiments were conducted on eleven cell lines with different proliferative activities and oxidative capacities, confirmed by conventional analytical tests. The data suggest that cancer cells and noncancer cells are characterized by a completely different redox status. This can be analyzed by EPR spectroscopy using mito-TEMPO and methoxy-TEMPO, but not carboxy-PROXYL. The correlation analysis shows that the EPR signal intensity of mito-TEMPO in cell suspensions is closely related to the superoxide level. The described methodology allows the detection of overproduction of superoxide in living cells and their identification based on the intracellular redox status. The experimental data provide evidences about the role of superoxide and hydroperoxides in cell proliferation and malignancy.
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Gil-Martín E, Egea J, Reiter RJ, Romero A. The emergence of melatonin in oncology: Focus on colorectal cancer. Med Res Rev 2019; 39:2239-2285. [PMID: 30950095 DOI: 10.1002/med.21582] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 03/04/2019] [Accepted: 03/16/2019] [Indexed: 12/17/2022]
Abstract
Within the last few decades, melatonin has increasingly emerged in clinical oncology as a naturally occurring bioactive molecule with substantial anticancer properties and a pharmacological profile optimal for joining the currently available pharmacopeia. In addition, extensive experimental data shows that this chronobiotic agent exerts oncostatic effects throughout all stages of tumor growth, from initial cell transformation to mitigation of malignant progression and metastasis; additionally, melatonin alleviates the side effects and improves the welfare of radio/chemotherapy-treated patients. Thus, the support of clinicians and oncologists for the use of melatonin in both the treatment and proactive prevention of cancer is gaining strength. Because of its epidemiological importance and symptomatic debut in advanced stages of difficult clinical management, colorectal cancer (CRC) is a preferential target for testing new therapies. In this regard, the development of effective forms of clinical intervention for the improvement of CRC outcome, specifically metastatic CRC, is urgent. At the same time, the need to reduce the costs of conventional anti-CRC therapy results is also imperative. In light of this status quo, the therapeutic potential of melatonin, and the direct and indirect critical processes of CRC malignancy it modulates, have aroused much interest. To illuminate the imminent future on CRC research, we focused our attention on the molecular mechanisms underlying the multiple oncostatic actions displayed by melatonin in the onset and evolution of CRC and summarized epidemiological evidence, as well as in vitro, in vivo and clinical findings that support the broadly protective potential demonstrated by melatonin.
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Affiliation(s)
- Emilio Gil-Martín
- Department of Biochemistry, Genetics and Immunology, Biomedical Research Center (CINBIO, 'Centro Singular de Investigación de Galicia'), University of Vigo, Vigo, Spain
| | - Javier Egea
- Molecular Neuroinflammation and Neuronal Plasticity Laboratory, Research Unit, Hospital Universitario Santa Cristina, Madrid, Spain.,Servicio de Farmacología Clínica, Instituto de Investigación Sanitaria, Hospital Universitario de la Princesa, Madrid, Spain.,Departamento de Farmacología y Terapéutica, Instituto-Fundación Teófilo Hernando, Universidad Autónoma de Madrid, Madrid, Spain
| | - Russel J Reiter
- Department of Cellular and Structural Biology, UT Health Science Center, San Antonio, Texas, USA
| | - Alejandro Romero
- Department of Pharmacology and Toxicology, Faculty of Veterinary Medicine, Complutense University of Madrid, Madrid, Spain
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35
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Ebrahimi S, Hashemy SI. MicroRNA-mediated redox regulation modulates therapy resistance in cancer cells: clinical perspectives. Cell Oncol (Dordr) 2019; 42:131-141. [PMID: 30645730 DOI: 10.1007/s13402-018-00421-z] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/26/2018] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Chemotherapy and radiation therapy are the most common types of cancer therapy. The development of chemo/radio-resistance remains, however, a major obstacle. Altered redox balances are among of the main factors mediating therapy resistance. Therefore, redox regulatory strategies are urgently needed to overcome this problem. Recently, microRNAs have been found to act as major redox regulatory factors affecting chemo/radio-resistance. MicroRNAs play critical roles in regulating therapeutic resistance through the regulation of antioxidant enzymes, redox-sensitive signaling pathways, cancer stem cells, DNA repair mechanisms and autophagy. CONCLUSIONS Here, we summarize current knowledge on microRNA-mediated redox regulatory mechanisms underlying chemo/radio-resistance. This knowledge may form a basis for a better clinical management of cancer patients.
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Affiliation(s)
- Safieh Ebrahimi
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.,Student Research Committee, Mashhad University of Medical Sciences, Mashhad, Iran
| | - Seyed Isaac Hashemy
- Department of Clinical Biochemistry, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran. .,Surgical Oncology Research Center, Mashhad University of Medical Sciences, Mashhad, Iran.
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36
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Raman D, Pervaiz S. Redox inhibition of protein phosphatase PP2A: Potential implications in oncogenesis and its progression. Redox Biol 2019; 27:101105. [PMID: 30686777 PMCID: PMC6859563 DOI: 10.1016/j.redox.2019.101105] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2018] [Revised: 01/04/2019] [Accepted: 01/09/2019] [Indexed: 01/17/2023] Open
Abstract
Cellular processes are dictated by the active signaling of proteins relaying messages to regulate cell proliferation, apoptosis, signal transduction and cell communications. An intricate web of protein kinases and phosphatases are critical to the proper transmission of signals across such cascades. By governing 30–50% of all protein dephosphorylation in the cell, with prominent substrate proteins being key regulators of signaling cascades, the phosphatase PP2A has emerged as a celebrated player in various developmental and tumorigenic pathways, thereby posing as an attractive target for therapeutic intervention in various pathologies wherein its activity is deregulated. This review is mainly focused on refreshing our understanding of the structural and functional complexity that cocoons the PP2A phosphatase, and its expression in cancers. Additionally, we focus on its physiological regulation as well as into recent advents and strategies that have shown promise in countering the deregulation of the phosphatase through its targeted reactivation. Finally, we dwell upon one of the key regulators of PP2A in cancer cells-cellular redox status-its multifarious nature, and its integration into the reactome of PP2A, highlighting some of the significant impacts that ROS can inflict on the structural modifications and functional aspect of PP2A.
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Affiliation(s)
- Deepika Raman
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - Shazib Pervaiz
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; Medical Science Cluster Cancer Program, Yong Loo Lin School of Medicine, National University of Singapore, Singapore; National University Cancer Institute, National University Health System, Singapore, Singapore; NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore.
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Chong SJF, Lai JXH, Eu JQ, Bellot GL, Pervaiz S. Reactive Oxygen Species and Oncoprotein Signaling-A Dangerous Liaison. Antioxid Redox Signal 2018; 29:1553-1588. [PMID: 29186971 DOI: 10.1089/ars.2017.7441] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
SIGNIFICANCE There is evidence to implicate reactive oxygen species (ROS) in tumorigenesis and its progression. This has been associated with the interplay between ROS and oncoproteins, resulting in enhanced cellular proliferation and survival. Recent Advances: To date, studies have investigated specific contributions of the crosstalk between ROS and signaling networks in cancer initiation and progression. These investigations have challenged the established dogma of ROS as agents of cell death by demonstrating a secondary function that fuels cell proliferation and survival. Studies have thus identified (onco)proteins (Bcl-2, STAT3/5, RAS, Rac1, and Myc) in manipulating ROS level as well as exploiting an altered redox environment to create a milieu conducive for cancer formation and progression. CRITICAL ISSUES Despite these advances, drug resistance and its association with an altered redox metabolism continue to pose a challenge at the mechanistic and clinical levels. Therefore, identifying specific signatures, altered protein expressions, and modifications as well as protein-protein interplay/function could not only enhance our understanding of the redox networks during cancer initiation and progression but will also provide novel targets for designing specific therapeutic strategies. FUTURE DIRECTIONS Not only a heightened realization is required to unravel various gene/protein networks associated with cancer formation and progression, particularly from the redox standpoint, but there is also a need for developing more sensitive tools for assessing cancer redox metabolism in clinical settings. This review attempts to summarize our current knowledge of the crosstalk between oncoproteins and ROS in promoting cancer cell survival and proliferation and treatment strategies employed against these oncoproteins. Antioxid. Redox Signal.
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Affiliation(s)
- Stephen Jun Fei Chong
- 1 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore
| | - Jolin Xiao Hui Lai
- 1 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore
| | - Jie Qing Eu
- 2 Cancer Science Institute , Singapore, Singapore
| | - Gregory Lucien Bellot
- 1 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore .,3 Department of Hand and Reconstructive Microsurgery, National University Health System , Singapore, Singapore
| | - Shazib Pervaiz
- 1 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore .,4 NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore , Singapore, Singapore .,5 National University Cancer Institute, National University Health System , Singapore, Singapore .,6 School of Biomedical Sciences, Curtin University , Perth, Australia
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Pohl SÖG, Agostino M, Dharmarajan A, Pervaiz S. Cross Talk Between Cellular Redox State and the Antiapoptotic Protein Bcl-2. Antioxid Redox Signal 2018; 29:1215-1236. [PMID: 29304561 DOI: 10.1089/ars.2017.7414] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
SIGNIFICANCE B cell lymphoma-2 (Bcl-2) was discovered over three decades ago and is the prototype antiapoptotic member of the Bcl-2 family that comprises proteins with contrasting effects on cell fate. First identified as a consequence of chromosomal translocation (t 14:18) in human lymphoma, subsequent studies have revealed mutations and/or gene copy number alterations as well as post-translational modifications of Bcl-2 in a variety of human cancers. The canonical function of Bcl-2 is linked to its ability to inhibit mitochondrial membrane permeabilization, thereby regulating apoptosome assembly and activation by blocking the cytosolic translocation of death amplification factors. Of note, the identification of specific domains within the Bcl-2 family of proteins (Bcl-2 homology domains; BH domains) has not only provided a mechanistic insight into the various interactions between the member proteins but has also been the impetus behind the design and development of small molecule inhibitors and BH3 mimetics for clinical use. Recent Advances: Aside from its role in maintaining mitochondrial integrity, recent evidence provides testimony to a novel facet in the biology of Bcl-2 that involves an intricate cross talk with cellular redox state. Bcl-2 overexpression modulates mitochondrial redox metabolism to create a "pro-oxidant" milieu, conducive for cell survival. However, under states of oxidative stress, overexpression of Bcl-2 functions as a redox sink to prevent excessive buildup of reactive oxygen species, thereby inhibiting execution signals. Emerging evidence indicates various redox-dependent transcriptional changes and post-translational modifications with different functional outcomes. CRITICAL ISSUES Understanding the complex interplay between Bcl-2 and the cellular redox milieu from the standpoint of cell fate signaling remains vital for a better understanding of pathological states associated with altered redox metabolism and/or aberrant Bcl-2 expression. FUTURE DIRECTIONS Based on its canonical functions, Bcl-2 has emerged as a potential druggable target. Small molecule inhibitors of Bcl-2 and/or other family members with similar function, as well as BH3 mimetics, are showing promise in the clinic. The emerging evidence for the noncanonical activity linked to cellular redox metabolism provides a novel avenue for the design and development of diagnostic and therapeutic strategies against cancers refractory to conventional chemotherapy by the overexpression of this prosurvival protein.
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Affiliation(s)
- Sebastian Öther-Gee Pohl
- 1 Stem Cell and Cancer Biology Laboratory, Curtin Health and Innovation Research Institute, Curtin University , Bentley, Western Australia .,2 School of Biomedical Sciences, Curtin University , Perth, Western Australia
| | - Mark Agostino
- 1 Stem Cell and Cancer Biology Laboratory, Curtin Health and Innovation Research Institute, Curtin University , Bentley, Western Australia .,2 School of Biomedical Sciences, Curtin University , Perth, Western Australia .,3 Curtin Institute for Computation, Curtin University , Perth, Western Australia
| | - Arun Dharmarajan
- 1 Stem Cell and Cancer Biology Laboratory, Curtin Health and Innovation Research Institute, Curtin University , Bentley, Western Australia .,2 School of Biomedical Sciences, Curtin University , Perth, Western Australia
| | - Shazib Pervaiz
- 2 School of Biomedical Sciences, Curtin University , Perth, Western Australia .,4 Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore .,5 NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore , Singapore, Singapore .,6 National University Cancer Institute, National University Health System , Singapore, Singapore
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Chaiswing L, St. Clair WH, St. Clair DK. Redox Paradox: A Novel Approach to Therapeutics-Resistant Cancer. Antioxid Redox Signal 2018; 29:1237-1272. [PMID: 29325444 PMCID: PMC6157438 DOI: 10.1089/ars.2017.7485] [Citation(s) in RCA: 79] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/25/2017] [Accepted: 01/05/2018] [Indexed: 02/06/2023]
Abstract
SIGNIFICANCE Cancer cells that are resistant to radiation and chemotherapy are a major problem limiting the success of cancer therapy. Aggressive cancer cells depend on elevated intracellular levels of reactive oxygen species (ROS) to proliferate, self-renew, and metastasize. As a result, these aggressive cancers maintain high basal levels of ROS compared with normal cells. The prominence of the redox state in cancer cells led us to consider whether increasing the redox state to the condition of oxidative stress could be used as a successful adjuvant therapy for aggressive cancers. Recent Advances: Past attempts using antioxidant compounds to inhibit ROS levels in cancers as redox-based therapy have met with very limited success. However, recent clinical trials using pro-oxidant compounds reveal noteworthy results, which could have a significant impact on the development of strategies for redox-based therapies. CRITICAL ISSUES The major objective of this review is to discuss the role of the redox state in aggressive cancers and how to utilize the shift in redox state to improve cancer therapy. We also discuss the paradox of redox state parameters; that is, hydrogen peroxide (H2O2) as the driver molecule for cancer progression as well as a target for cancer treatment. FUTURE DIRECTIONS Based on the biological significance of the redox state, we postulate that this system could potentially be used to create a new avenue for targeted therapy, including the potential to incorporate personalized redox therapy for cancer treatment.
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Affiliation(s)
- Luksana Chaiswing
- Department of Toxicology and Cancer Biology, University of Kentucky-Lexington, Lexington, Kentucky
| | - William H. St. Clair
- Department of Radiation Medicine, University of Kentucky-Lexington, Lexington, Kentucky
| | - Daret K. St. Clair
- Department of Toxicology and Cancer Biology, University of Kentucky-Lexington, Lexington, Kentucky
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Abstract
Cellular redox state is a consequence of the balance between the rates of reactive oxygen species and/or reactive nitrogen species, and their dissipation via enzymatic and nonenzymatic redox buffering systems. While low levels of oscillation are associated with normal cellular metabolism, stimuli that favor a significant shift in the redox microenvironment, through either the increased production and/or compromise of the antioxidant defenses, induce overt oxidative stress. This change in the redox set point triggers a host of cellular responses ranging from modifications in cellular macromolecules, organelle morphology and physiology, amplified cell-to-cell and intracellular signaling, and changes in genome, epigenome, and proteome. The consequence of this dysregulated cellular homeostasis is therefore manifested in the form of a plethora of pathological states such as inflammation, diabetes mellitus, neurodegenerative disorders, atherosclerosis, and cancer. On the backdrop of these observations, this Forum attempts at reviewing the current understanding of how a prooxidant intracellular milieu favors cell survival while overt oxidative stress results in death execution, and the translation of these biological effects in human disease states, in particular cancer. The far-reaching biochemical, biological, and clinical ramifications of an altered redox environment are also discussed from the standpoint of strategic therapeutic design against refractory and aggressive cancers. It is tempting to conjecture if the inherent or acquired redox heterogeneity, at least in the case of cancer, has evolved as an "evasive mechanism," or presents itself as the "Achilles heel" for therapeutic exploitation.
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Affiliation(s)
- Shazib Pervaiz
- 1 Cancer Biology Program, Medical Science Cluster, Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore , Singapore, Singapore .,2 NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore , Singapore, Singapore .,3 National University Cancer Institute, National University Health System , Singapore, Singapore .,4 Curtin Health Innovation Research Institute, School of Pharmacy and Biomedical Sciences, Curtin University, Perth, Australia
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Foyer CH. Reactive oxygen species, oxidative signaling and the regulation of photosynthesis. ENVIRONMENTAL AND EXPERIMENTAL BOTANY 2018; 154:134-142. [PMID: 30283160 PMCID: PMC6105748 DOI: 10.1016/j.envexpbot.2018.05.003] [Citation(s) in RCA: 338] [Impact Index Per Article: 56.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Revised: 05/03/2018] [Accepted: 05/03/2018] [Indexed: 05/18/2023]
Abstract
Reduction-oxidation (redox) reactions, in which electrons move from a donor to an acceptor, are the functional heart of photosynthesis. It is not surprising therefore that reactive oxygen species (ROS) are generated in abundance by photosynthesis, providing a plethora of redox signals as well as functioning as essential regulators of energy and metabolic fluxes. Chloroplasts are equipped with an elaborate and multifaceted protective network that allows photosynthesis to function with high productivity even in resource-limited natural environments. This includes numerous antioxidants with overlapping functions that provide enormous flexibility in redox control. ROS are an integral part of the repertoire of chloroplast signals that are transferred to the nucleus to convey essential information concerning redox pressure within the electron transport chain. Current evidence suggests that there is specificity in the gene-expression profiles triggered by the different ROS signals, so that singlet oxygen triggers programs related to over excitation of photosystem (PS) II while superoxide and hydrogen peroxide promote the expression of other suites of genes that may serve to alleviate electron pressure on the reducing side of PSI. Not all chloroplasts are equal in their signaling functions, with some sub-populations appearing to have better contacts/access to the nucleus than others to promote genetic and epigenetic responses. While the concept that light-induced increases in ROS result in damage to PSII and photoinhibition is embedded in the photosynthesis literature, there is little consensus concerning the extent to which such oxidative damage happens in nature. Slowly reversible decreases in photosynthetic capacity are not necessarily the result of light-induced damage to PSII reaction centers.
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Samson AAS, Lee J, Song JM. Inkjet printing-based photo-induced electron transfer reaction on parchment paper using riboflavin as a photosensitizer. Anal Chim Acta 2018; 1012:49-59. [DOI: 10.1016/j.aca.2018.02.004] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Revised: 01/16/2018] [Accepted: 02/05/2018] [Indexed: 01/14/2023]
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Foyer CH, Wilson MH, Wright MH. Redox regulation of cell proliferation: Bioinformatics and redox proteomics approaches to identify redox-sensitive cell cycle regulators. Free Radic Biol Med 2018; 122:137-149. [PMID: 29605447 PMCID: PMC6146653 DOI: 10.1016/j.freeradbiomed.2018.03.047] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 03/16/2018] [Accepted: 03/27/2018] [Indexed: 01/16/2023]
Abstract
Plant stem cells are the foundation of plant growth and development. The balance of quiescence and division is highly regulated, while ensuring that proliferating cells are protected from the adverse effects of environment fluctuations that may damage the genome. Redox regulation is important in both the activation of proliferation and arrest of the cell cycle upon perception of environmental stress. Within this context, reactive oxygen species serve as 'pro-life' signals with positive roles in the regulation of the cell cycle and survival. However, very little is known about the metabolic mechanisms and redox-sensitive proteins that influence cell cycle progression. We have identified cysteine residues on known cell cycle regulators in Arabidopsis that are potentially accessible, and could play a role in redox regulation, based on secondary structure and solvent accessibility likelihoods for each protein. We propose that redox regulation may function alongside other known posttranslational modifications to control the functions of core cell cycle regulators such as the retinoblastoma protein. Since our current understanding of how redox regulation is involved in cell cycle control is hindered by a lack of knowledge regarding both which residues are important and how modification of those residues alters protein function, we discuss how critical redox modifications can be mapped at the molecular level.
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Affiliation(s)
- Christine H Foyer
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK.
| | - Michael H Wilson
- Centre for Plant Sciences, School of Biology, Faculty of Biological Sciences, University of Leeds, Leeds LS2 9JT, UK
| | - Megan H Wright
- The Astbury Centre for Structural Molecular Biology, School of Chemistry, University of Leeds, Leeds LS2 9JT, UK
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Vitamin K: Redox-modulation, prevention of mitochondrial dysfunction and anticancer effect. Redox Biol 2018; 16:352-358. [PMID: 29597144 PMCID: PMC5953218 DOI: 10.1016/j.redox.2018.03.013] [Citation(s) in RCA: 57] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 03/15/2018] [Accepted: 03/17/2018] [Indexed: 12/21/2022] Open
Abstract
This review is directed to the redox-modulating properties and anticancer effect of vitamin K. The concept is focused on two aspects: (i) redox-cycle of vitamin K and its effect on the calcium homeostasis, “oncogenic” and “onco-suppressive” reactive oxygen species and the specific induction of oxidative stress in cancer; (ii) vitamin K plus C as a powerful redox-system, which forms a bypass between mitochondrial complexes II and III and thus prevents mitochondrial dysfunction, restores oxidative phosphorylation and aerobic glycolysis, modulates the redox-state of endogenous redox-pairs, eliminates the hypoxic environment of cancer cells and induces cell death. The analyzed data suggest that vitamin C&K can sensitize cancer cells to conventional chemotherapy, which allows achievement of a lower effective dose of the drug and minimizing the harmful side-effects. The review is intended for a wide audience of readers - from students to specialists in the field.
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Wang Q, Xue L, Zhang X, Bu S, Zhu X, Lai D. Autophagy protects ovarian cancer-associated fibroblasts against oxidative stress. Cell Cycle 2018; 15:1376-85. [PMID: 27074587 PMCID: PMC4889272 DOI: 10.1080/15384101.2016.1170269] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
RNA-Seq and gene set enrichment anylysis revealed that ovarian cancer associated fibroblasts (CAFs) are mitotically active compared with normal fibroblasts (NFs). Cellular senescence is observed in CAFs treated with H2O2 as shown by elevated SA-β-gal activity and p21 (WAF1/Cip1) protein levels. Reactive oxygen species (ROS) production and p21 (WAF1/Cip1) elevation may account for H2O2-induced CAFs cell cycle arrest in S phase. Blockage of autophagy can increase ROS production in CAFs, leading to cell cycle arrest in S phase, cell proliferation inhibition and enhanced sensitivity to H2O2-induced cell death. ROS scavenger NAC can reduce ROS production and thus restore cell viability. Lactate dehydrogenase A (LDHA), monocarboxylic acid transporter 4 (MCT4) and superoxide dismutase 2 (SOD2) were up-regulated in CAFs compared with NFs. There was relatively high lactate content in CAFs than in NFs. Blockage of autophagy decreased LDHA, MCT4 and SOD2 protein levels in CAFs that might enhance ROS production. Blockage of autophagy can sensitize CAFs to chemotherapeutic drug cisplatin, implicating that autophagy might possess clinical utility as an attractive target for ovarian cancer treatment in the future.
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Affiliation(s)
- Qian Wang
- a International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai , P. R. China.,b Institute of Embryo-Fetal Original Adult Disease Affiliated to Shanghai Jiao Tong University School of Medicine , Shanghai , P. R. China
| | - Liang Xue
- c Shanghai Institute of Biochemistry and Cell Biology, SIBS, Chinese Academy of Sciences , Shanghai , China
| | - Xiaoyu Zhang
- c Shanghai Institute of Biochemistry and Cell Biology, SIBS, Chinese Academy of Sciences , Shanghai , China
| | - Shixia Bu
- a International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai , P. R. China
| | - Xueliang Zhu
- c Shanghai Institute of Biochemistry and Cell Biology, SIBS, Chinese Academy of Sciences , Shanghai , China
| | - Dongmei Lai
- a International Peace Maternity and Child Health Hospital, School of Medicine, Shanghai Jiao Tong University , Shanghai , P. R. China
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Angelina C, Tan ISY, Choo Z, Lee OZJ, Pervaiz S, Chen ZX. KIF1Bβ increases ROS to mediate apoptosis and reinforces its protein expression through O 2- in a positive feedback mechanism in neuroblastoma. Sci Rep 2017; 7:16867. [PMID: 29203804 PMCID: PMC5715000 DOI: 10.1038/s41598-017-17192-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Accepted: 11/22/2017] [Indexed: 01/15/2023] Open
Abstract
Relapse-prone, poor prognosis neuroblastoma is frequently characterized by deletion of chr1p36 where tumor suppressor gene KIF1Bβ resides. Interestingly, many 1p36-positive patients failed to express KIF1Bβ protein. Since altered cellular redox status has been reported to be involved in cell death and protein modification, we investigated the relationship between reactive oxygen species (ROS) and KIF1Bβ. Here, we showed that wild-type KIF1Bβ protein expression positively correlates with superoxide (O2-) and total ROS levels in neuroblastoma cells, unlike apoptotic loss-of-function KIF1Bβ mutants. Overexpression of KIF1Bβ apoptotic domain variants increases total ROS and, specifically O2-, whereas knockdown of endogenous KIF1Bβ decreases ROS and O2-. Interestingly, O2- increases KIF1Bβ protein expression, independent of the proteasomal degradation pathway. Scavenging O2- or ROS decreases KIF1Bβ protein expression and subsequent apoptosis. Moreover, treatment with investigational redox compound Gliotoxin increases O2-, KIF1Bβ protein expression, apoptosis and colony formation inhibition. Overall, our findings suggest that ROS and O2- may be important downstream effectors of KIF1Bβ-mediated apoptosis. Subsequently, O2- produced may increase KIF1Bβ protein expression in a positive feedback mechanism. Therefore, ROS and, specifically O2-, may be critical regulators of KIF1Bβ-mediated apoptosis and its protein expression in neuroblastoma.
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Affiliation(s)
- Clara Angelina
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Irene Sze Ying Tan
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Zhang'e Choo
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Oswald Zhao Jian Lee
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Shazib Pervaiz
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore.,NUS Graduate School for Integrative Sciences and Engineering, National University of Singapore, Singapore, Singapore.,Singapore-MIT Alliance, Singapore, Singapore
| | - Zhi Xiong Chen
- Department of Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore. .,KK Women's and Children's Hospital, Singapore, Singapore.
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Griess B, Tom E, Domann F, Teoh-Fitzgerald M. Extracellular superoxide dismutase and its role in cancer. Free Radic Biol Med 2017; 112:464-479. [PMID: 28842347 PMCID: PMC5685559 DOI: 10.1016/j.freeradbiomed.2017.08.013] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2017] [Revised: 08/16/2017] [Accepted: 08/18/2017] [Indexed: 12/19/2022]
Abstract
Reactive oxygen species (ROS) are increasingly recognized as critical determinants of cellular signaling and a strict balance of ROS levels must be maintained to ensure proper cellular function and survival. Notably, ROS is increased in cancer cells. The superoxide dismutase family plays an essential physiological role in mitigating deleterious effects of ROS. Due to the compartmentalization of ROS signaling, EcSOD, the only superoxide dismutase in the extracellular space, has unique characteristics and functions in cellular signal transduction. In comparison to the other two intracellular SODs, EcSOD is a relatively new comer in terms of its tumor suppressive role in cancer and the mechanisms involved are less well understood. Nevertheless, the degree of differential expression of this extracellular antioxidant in cancer versus normal cells/tissues is more pronounced and prevalent than the other SODs. A significant association of low EcSOD expression with reduced cancer patient survival further suggests that loss of extracellular redox regulation promotes a conducive microenvironment that favors cancer progression. The vast array of mechanisms reported in mediating deregulation of EcSOD expression, function, and cellular distribution also supports that loss of this extracellular antioxidant provides a selective advantage to cancer cells. Moreover, overexpression of EcSOD inhibits tumor growth and metastasis, indicating a role as a tumor suppressor. This review focuses on the current understanding of the mechanisms of deregulation and tumor suppressive function of EcSOD in cancer.
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Affiliation(s)
- Brandon Griess
- Department of Biochemistry and Molecular Biology, Buffett Cancer Center, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Eric Tom
- Department of Biochemistry and Molecular Biology, Buffett Cancer Center, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, United States
| | - Frederick Domann
- Free Radical and Radiation Biology Program, Radiation Oncology, University of Iowa, Iowa, IA 52242, United States
| | - Melissa Teoh-Fitzgerald
- Department of Biochemistry and Molecular Biology, Buffett Cancer Center, College of Medicine, University of Nebraska Medical Center, Omaha, NE 68198, United States.
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Chocry M, Leloup L, Kovacic H. Reversion of resistance to oxaliplatin by inhibition of p38 MAPK in colorectal cancer cell lines: involvement of the calpain / Nox1 pathway. Oncotarget 2017; 8:103710-103730. [PMID: 29262595 PMCID: PMC5732761 DOI: 10.18632/oncotarget.21780] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 09/21/2017] [Indexed: 12/19/2022] Open
Abstract
Oxaliplatin is a major treatment for metastatic colorectal cancer, however its effectiveness is greatly diminished by the development of resistances. Our previous work has shown that oxaliplatin efficacy depends on the reactive oxygen species (ROS) produced by Nox1. In this report, we investigated Nox1 involvement in the survival mechanisms of oxaliplatin resistant cell lines that we have selected. Our results show that basal ROS production by Nox1 is increased in resistant cells. Whereas the transitory Nox1-dependent production of superoxide contributes to the cytotoxicity of oxaliplatin in sensitive cells, oxaliplatin treatment of resistant cells leads to a decrease in the production of superoxide associated with an increase of H2O2 and a decreased cytotoxicity of oxaliplatin. We have shown that calpains regulate differently Nox1 according to the sensitivity of the cells to oxaliplatin. In sensitive cells, calpains inhibit Nox1 by cleaving NoxA1 leading to a transient ROS production necessary for oxaliplatin cytotoxic effects. In contrast, in resistant cells calpain activation is associated with an increase of Nox1 activity through Src kinases, inducing a strong and maintained ROS production responsible for cell survival. Using a kinomic study we have shown that this overactivation of Nox1 results in an increase of p38 MAPK activity allowing the resistant cells to escape apoptosis. Our results show that the modulation of Nox1 activity in the context of anticancer treatment remains complex. However, a strategy to maximize Nox1 activation while inhibiting the p38 MAPK-dependent escape routes appears to be an option of choice to optimize oxaliplatin efficiency.
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Affiliation(s)
- Mathieu Chocry
- Aix-Marseille Université, INSERM, CRO2 UMR_S 911, Marseille 13385, France
| | - Ludovic Leloup
- Aix-Marseille Université, INSERM, CRO2 UMR_S 911, Marseille 13385, France
| | - Hervé Kovacic
- Aix-Marseille Université, INSERM, CRO2 UMR_S 911, Marseille 13385, France
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49
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Li D, Ye Q, Jiang L, Luo Z. Effects of nano-TiO 2 -LDPE packaging on postharvest quality and antioxidant capacity of strawberry (Fragaria ananassa Duch.) stored at refrigeration temperature. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2017; 97:1116-1123. [PMID: 27282949 DOI: 10.1002/jsfa.7837] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/24/2015] [Revised: 04/11/2016] [Accepted: 06/02/2016] [Indexed: 06/06/2023]
Abstract
BACKGROUND Nano-TiO2 -low-density polyethylene (NTLDPE) packaging was prepared, and the effects of NTLDPE packaging on quality and antioxidant capacity of strawberry fruits were investigated. RESULTS With increased barrier properties, NTLDPE packaging quickly formed a relative lower O2 and higher CO2 air composition in comparison with LDPE. It was also more efficient in maintaining the overall quality of strawberry fruit, as reflected by lower decay rate and weight loss, as well as retarding the decrease in firmness and titratable acid. Meanwhile, reactive oxygen species (ROS) including superoxide anion and hydrogen peroxide in NTLDPE-packed fruits were 10.8% and 21.9% lower, respectively. Furthermore, the activities of antioxidant enzymes involved in ROS scavenging in NTLDPE-packed fruits were significantly higher at the later period of storage time. Anthocyanin accumulation was inhibited, whereas ascorbic acid and total phenolics contents were better retained and 1-diphenyl-2-picrylhydrazyl radical scavenging activity was 13.2% higher in NTLDPE-packed fruit by the end of storage. CONCLUSION These data indicate that the beneficial effects of NTLDPE packaging on postharvest quality and antioxidant capacity of strawberry are probably associated with the promotion of ROS scavenging and related antioxidant enzyme activities, and NTLDPE packaging together with refrigeration storage is a promising method for strawberry fruit preservation. © 2016 Society of Chemical Industry.
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Affiliation(s)
- Dongdong Li
- Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Qingyang Ye
- Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Lei Jiang
- Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
| | - Zisheng Luo
- Zhejiang Key Laboratory for Agro-Food Processing, College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
- Fuli Institute of Food Science, Zhejiang University, Hangzhou, 310058, People's Republic of China
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Wu Q, Yao B, Li N, Ma L, Deng Y, Yang Y, Zeng C, Yang Z, Liu B. Nrf2 mediates redox adaptation in NOX4-overexpressed non-small cell lung cancer cells. Exp Cell Res 2017; 352:245-254. [PMID: 28196727 DOI: 10.1016/j.yexcr.2017.02.014] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2016] [Revised: 02/08/2017] [Accepted: 02/10/2017] [Indexed: 12/19/2022]
Abstract
The redox adaptation mechanisms in cancer cells are very complex and remain largely unclear. Our previous studies have confirmed that NADPH oxidase 4 (NOX4) is abundantly expressed in non-small cell lung cancer (NSCLC) and confers apoptosis resistance on NSCLC cells. However, the comprehensive mechanisms for NOX4-mediated oxidative resistance of cancer cells remain still undentified. The present study found that NOX4-derived H2O2 enhanced the nuclear factor erythroid 2-related factor 2 (Nrf2) stability via disruption of redox-dependent proteasomal degradation and stimulated its activity through activation of PI3K signaling. Specifically, the results showed that ectopic NOX4 expression did not induce apoptosis of A549 cells; however, inhibition of Nrf2 resulted in obvious apoptotic death of NOX4-overexpressed A549 cells, accompanied by a significant increase in H2O2 level and decrease in GSH content. Besides, inhibition of Nrf2 could suppress cell growth and efficiently reverse the enhancement effect of NOX4 on cell growth. The in vivo data confirmed that inhibition of Nrf2 could interfere apoptosis resistance in NOX4-overexpressed A549 tumors and led to cell growth inhibition. In conclusion, these results reveal that Nrf2 is critically involved in redox adaptation regulation in NOX4-overexpressed NSCLC cells. Therefore, NOX4 and Nrf2 may be promising combination targets against malignant progression of NSCLC.
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Affiliation(s)
- Qipeng Wu
- Department of Clinical Pharmacy, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Bei Yao
- Department of Clinical Pharmacy, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Ning Li
- Department of Clinical Pharmacy, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Lei Ma
- Department of Clinical Pharmacy, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yanchao Deng
- Department of Clinical Pharmacy, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Yang Yang
- Department of Clinical Pharmacy, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Cheng Zeng
- Department of Clinical Pharmacy, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Zhicheng Yang
- Department of Clinical Pharmacy, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China
| | - Bing Liu
- Department of Clinical Pharmacy, School of Pharmacy, Guangdong Pharmaceutical University, Guangzhou 510006, China; Guangdong Key Laboratory of Pharmaceutical Bioactive Substances, Guangdong Pharmaceutical University, Guangzhou 510006, China.
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