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Luo J, Li Y, Li Y, Chen X, Du P, Wang Z, Tian A, Zhao Y. Reversing Ferroptosis Resistance in Breast Cancer via Tailored Lipid and Iron Presentation. ACS NANO 2023; 17:25257-25268. [PMID: 38055669 DOI: 10.1021/acsnano.3c08485] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/08/2023]
Abstract
Ferroptotic cancer therapy is promising in many scenarios where traditional cancer therapies show a poor response. However, certain types of cancers lack the long-chain acyl-CoA synthetase 4 (ACSL4), a key modulator of ferroptosis, resulting in therapy resistance and tumor relapse. Because ACSL4 is in charge of the synthesis of ferroptotic lipids (e.g., arachidonoylphosphatidylethanolamine/PE-AA), we postulated that direct delivery of PE-AA may reverse ferroptosis resistance induced by ACSL4 deficiency. To further increase the ferroptosis sensitivity, we employed the ferrocene-bearing polymer micelles to co-load PE-AA with an FDA-approved redox modulator, auranofin (Aur), targeting the thioredoxin reductase. The presence of ferrocene enabled triggered cargo release and iron production, which can sensitize ferroptosis by boosting autoxidation-mediated PE-AA peroxidation. The micellar system could impair redox homeostasis and induce lipid peroxidation in ACSL4-deficient MCF-7 cells. Moreover, the tailored micelles potently induced ferroptosis in MCF-7 tumors in vivo, suppressed tumor growth, and increased the mice's survival rate. The current work provides a facile means for reversing the ferroptosis resistance in ACSL4-deficient tumors.
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Affiliation(s)
- Jiajia Luo
- School of Pharmaceutical Science & Technology, Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Yao Li
- School of Pharmaceutical Science & Technology, Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Yaru Li
- School of Pharmaceutical Science & Technology, Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Xuefei Chen
- School of Pharmaceutical Science & Technology, Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Panyu Du
- School of Pharmaceutical Science & Technology, Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Zheng Wang
- School of Pharmaceutical Science & Technology, Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
| | - Aixian Tian
- Orthopedic Research Institute, Tianjin Hospital, Tianjin University, Tianjin 300211, China
| | - Yanjun Zhao
- School of Pharmaceutical Science & Technology, Tianjin Key Laboratory for Modern Drug Delivery & High Efficiency, and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin University, Tianjin 300072, China
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2
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Leischner C, Marongiu L, Piotrowsky A, Niessner H, Venturelli S, Burkard M, Renner O. Relevant Membrane Transport Proteins as Possible Gatekeepers for Effective Pharmacological Ascorbate Treatment in Cancer. Antioxidants (Basel) 2023; 12:antiox12040916. [PMID: 37107291 PMCID: PMC10135768 DOI: 10.3390/antiox12040916] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 03/23/2023] [Accepted: 04/06/2023] [Indexed: 04/29/2023] Open
Abstract
Despite the increasing number of newly diagnosed malignancies worldwide, therapeutic options for some tumor diseases are unfortunately still limited. Interestingly, preclinical but also some clinical data suggest that the administration of pharmacological ascorbate seems to respond well, especially in some aggressively growing tumor entities. The membrane transport and channel proteins are highly relevant for the use of pharmacological ascorbate in cancer therapy and are involved in the transfer of active substances such as ascorbate, hydrogen peroxide, and iron that predominantly must enter malignant cells to induce antiproliferative effects and especially ferroptosis. In this review, the relevant conveying proteins from cellular surfaces are presented as an integral part of the efficacy of pharmacological ascorbate, considering the already known genetic and functional features in tumor tissues. Accordingly, candidates for diagnostic markers and therapeutic targets are mentioned.
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Affiliation(s)
- Christian Leischner
- Institute of Nutritional Sciences, Department of Nutritional Biochemistry, University of Hohenheim, Garbenstraße 30, 70599 Stuttgart, Germany
| | - Luigi Marongiu
- Institute of Nutritional Sciences, Department of Nutritional Biochemistry, University of Hohenheim, Garbenstraße 30, 70599 Stuttgart, Germany
- Department of Internal Medicine VIII, University Hospital Tuebingen, Otfried-Mueller-Straße 10, 72076 Tuebingen, Germany
| | - Alban Piotrowsky
- Institute of Nutritional Sciences, Department of Nutritional Biochemistry, University of Hohenheim, Garbenstraße 30, 70599 Stuttgart, Germany
| | - Heike Niessner
- Department of Dermatology, Division of Dermatooncology, University of Tuebingen, Liebermeisterstraße 25, 72076 Tuebingen, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image Guided and Functionally Instructed Tumor Therapies", 72076 Tuebingen, Germany
| | - Sascha Venturelli
- Institute of Nutritional Sciences, Department of Nutritional Biochemistry, University of Hohenheim, Garbenstraße 30, 70599 Stuttgart, Germany
- Institute of Physiology, Department of Vegetative and Clinical Physiology, University of Tuebingen, Wilhelmstraße 56, 72074 Tuebingen, Germany
| | - Markus Burkard
- Institute of Nutritional Sciences, Department of Nutritional Biochemistry, University of Hohenheim, Garbenstraße 30, 70599 Stuttgart, Germany
| | - Olga Renner
- Institute of Nutritional Sciences, Department of Nutritional Biochemistry, University of Hohenheim, Garbenstraße 30, 70599 Stuttgart, Germany
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3
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Ascorbate as a Bioactive Compound in Cancer Therapy: The Old Classic Strikes Back. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123818. [PMID: 35744943 PMCID: PMC9229419 DOI: 10.3390/molecules27123818] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Revised: 06/01/2022] [Accepted: 06/08/2022] [Indexed: 11/17/2022]
Abstract
Cancer is a disease of high mortality, and its prevalence has increased steadily in the last few years. However, during the last decade, the development of modern chemotherapy schemes, new radiotherapy techniques, targeted therapies and immunotherapy has brought new hope in the treatment of these diseases. Unfortunately, cancer therapies are also associated with frequent and, sometimes, severe adverse events. Ascorbate (ascorbic acid or vitamin C) is a potent water-soluble antioxidant that is produced in most mammals but is not synthesised endogenously in humans, which lack enzymes for its synthesis. Ascorbate has antioxidant effects that correspond closely to the dose administered. Interestingly, this natural antioxidant induces oxidative stress when given intravenously at a high dose, a paradoxical effect due to its interactions with iron. Importantly, this deleterious property of ascorbate can result in increased cell death. Although, historically, ascorbate has been reported to exhibit anti-tumour properties, this effect has been questioned due to the lack of available mechanistic detail. Recently, new evidence has emerged implicating ferroptosis in several types of oxidative stress-mediated cell death, such as those associated with ischemia–reperfusion. This effect could be positively modulated by the interaction of iron and high ascorbate dosing, particularly in cell systems having a high mitotic index. In addition, it has been reported that ascorbate may behave as an adjuvant of favourable anti-tumour effects in cancer therapies such as radiotherapy, radio-chemotherapy, chemotherapy, immunotherapy, or even in monotherapy, as it facilitates tumour cell death through the generation of reactive oxygen species and ferroptosis. In this review, we provide evidence supporting the view that ascorbate should be revisited to develop novel, safe strategies in the treatment of cancer to achieve their application in human medicine.
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4
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Park SH, Jung H, Lee H, Kim TM, Cho JW, Jang WD, Hyun JY, Shin I. Cancer cell death using metabolic glycan labelling techniques. Chem Commun (Camb) 2021; 56:10650-10653. [PMID: 32870196 DOI: 10.1039/d0cc04474a] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Herein we describe a method for inducing cancer cell death, which relies on the use of a H2O2-responsive glycan metabolic precursor in conjunction with antibody-dependent cellular cytotoxicity (ADCC) or photodynamic therapy (PDT).
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Affiliation(s)
- Sang-Hyun Park
- Department of Chemistry, Yonsei University, Seoul 03722, Republic of Korea.
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5
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Bengtson C, Bogaerts A. The Quest to Quantify Selective and Synergistic Effects of Plasma for Cancer Treatment: Insights from Mathematical Modeling. Int J Mol Sci 2021; 22:ijms22095033. [PMID: 34068601 PMCID: PMC8126141 DOI: 10.3390/ijms22095033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/05/2021] [Accepted: 05/06/2021] [Indexed: 12/30/2022] Open
Abstract
Cold atmospheric plasma (CAP) and plasma-treated liquids (PTLs) have recently become a promising option for cancer treatment, but the underlying mechanisms of the anti-cancer effect are still to a large extent unknown. Although hydrogen peroxide (H2O2) has been recognized as the major anti-cancer agent of PTL and may enable selectivity in a certain concentration regime, the co-existence of nitrite can create a synergistic effect. We develop a mathematical model to describe the key species and features of the cellular response toward PTL. From the numerical solutions, we define a number of dependent variables, which represent feasible measures to quantify cell susceptibility in terms of the H2O2 membrane diffusion rate constant and the intracellular catalase concentration. For each of these dependent variables, we investigate the regimes of selective versus non-selective, and of synergistic versus non-synergistic effect to evaluate their potential role as a measure of cell susceptibility. Our results suggest that the maximal intracellular H2O2 concentration, which in the selective regime is almost four times greater for the most susceptible cells compared to the most resistant cells, could be used to quantify the cell susceptibility toward exogenous H2O2. We believe our theoretical approach brings novelty to the field of plasma oncology, and more broadly, to the field of redox biology, by proposing new ways to quantify the selective and synergistic anti-cancer effect of PTL in terms of inherent cell features.
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6
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Abstract
Significance: Persistent oxidative stress is a common feature of cancer cells, giving a specific weapon to selectively eliminate them. Ascorbate in pharmacological concentration can contribute to the suspended formation of hydroxyl radical via the Fenton reaction; thus, it can be an important element of the oxidative stress therapy against cancer cells. Recent Advances: The main components of ascorbate-induced cell death are DNA double-strand breaks via the production of hydroxyl radical and ATP depletion due to the activation of poly (ADP-ribose) polymerase 1. Presumably, DNA damage can be the primary contributor to the anticancer activity of pharmacological ascorbate, as opposed to the rupture of bioenergetics. The caspase independency of high-dose ascorbate-induced cell death proposed the possible involvement of several types of cell death, such as ferroptosis, necroptosis, and autophagy. Critical Issues: Ascorbate can target at least two key molecular features of cancer cells as a part of the anticancer therapy: the intrinsic or acquired resistance to cell death and the dysregulated metabolism of cancer cells. It seems probable that different concentrations of ascorbate alter the nature of induced cell death. Autophagy and necroptosis may play a role at intermediate concentrations, but caspase-independent apoptosis may dominate at higher concentrations. However, ascorbate behaves as an effective inhibitor of ferroptosis that may have crucial importance in its possible clinical application. Future Directions: The elucidation of the details and the links between high-dose ascorbate-induced cancer selective cell death mechanisms may give us a tool to form and apply synergistic cancer therapies. Antioxid. Redox Signal. 34, 831-844.
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Affiliation(s)
- András Szarka
- Laboratory of Biochemistry and Molecular Biology, Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Budapest, Hungary
| | - Orsolya Kapuy
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | - Tamás Lőrincz
- Laboratory of Biochemistry and Molecular Biology, Department of Applied Biotechnology and Food Science, Budapest University of Technology and Economics, Budapest, Hungary
| | - Gábor Bánhegyi
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
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7
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Erudaitius DT, Buettner GR, Rodgers VGJ. The latency of peroxisomal catalase in terms of effectiveness factor for pancreatic and glioblastoma cancer cell lines in the presence of high concentrations of H 2O 2: Implications for the use of pharmacological ascorbate in cancer therapy. Free Radic Biol Med 2020; 156:20-25. [PMID: 32522584 PMCID: PMC7434663 DOI: 10.1016/j.freeradbiomed.2020.05.023] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2020] [Accepted: 05/26/2020] [Indexed: 02/07/2023]
Abstract
Previous research has identified variation in cancer cell line response to high levels of extracellular H2O2 (eH2O2) exposure. This directly contributes to our understanding cellular efficacy of pharmacological ascorbate (P-AscH-) therapy. Here we investigate the factors contributing to latency of peroxisomal catalase of a cell and the importance of latency in evaluating cell exposure to eH2O2. First, we develop a mathematical framework for the latency of catalase in terms of an effectiveness factor, ηeff, to describe the catalase activity in the presence of high levels of eH2O2. A simplified relationship emerges, [Formula: see text] when mprp/Dij≪1, where mp,rp, and [Formula: see text] are the experimentally determined peroxisome permeability, average peroxisome radius, and the pseudo first-order reaction rate constant, respectively. [Formula: see text] is the catalase concentration in the peroxisome and k2=1.7x107M-1s-1. Next, previously published parameters are used to determine the latency effect of the cell lines: normal pancreatic cells (H6c7), pancreatic cancer cells (MIA PaCa-2), and glioblastoma cells (LN-229, T98G, and U-87), all which vary in their susceptibility to exposure to high eH2O2. The results show that effectiveness is not significantly different except for the most susceptible, MIA PaCa-2 cell line, which is higher when compared to all other cell lines. This result is counterintuitive and further implies that latency, as a single parameter, is ineffective in forecasting cell line susceptibility to P-AscH- therapy equivalent eH2O. Thus, further research remains necessary to identify why cancer cells vary in susceptibility to P-AscH- therapy.
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Affiliation(s)
- Dieanira T Erudaitius
- Department of Bioengineering, University of California, Riverside, Riverside, CA, 92521, USA
| | - Garry R Buettner
- Free Radical & Radiation Biology, Department of Radiation Oncology, University of Iowa College of Medicine, Iowa City, IA, 52242, USA
| | - Victor G J Rodgers
- Department of Bioengineering, University of California, Riverside, Riverside, CA, 92521, USA.
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8
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Kang S, Gil YG, Min DH, Jang H. Nonrecurring Circuit Nanozymatic Enhancement of Hypoxic Pancreatic Cancer Phototherapy Using Speckled Ru-Te Hollow Nanorods. ACS NANO 2020; 14:4383-4394. [PMID: 32196307 DOI: 10.1021/acsnano.9b09974] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Nanozymatic reactions that produce or consume oxygen (O2) or reactive oxygen species (ROS) consist of oxidase, peroxidase, superoxide dismutase (SOD), and catalase-type activity. Although extensive studies were conducted to overcome hypoxia through nanozymatic reactions, the construction of an ideal system is challenging, given that the reactants and products are arranged in a recurring structure for continuous consumption in a full cycle. In this study, speckled Ru-Te hollow nanorods were prepared through solvothermal galvanic replacement against Te nanorod templates with high yield and robustness. From their multicompositional characteristics, nonrecurring peroxidase-SOD-catalase-type nanozymatic properties were identified with photothermal and photodynamic feasibility over a wide range of laser irradiation wavelengths. Owing to the excellent colloidal stability and biocompatibility, the proposed Ru-Te-based nanozymatic platform was highly effective in hypoxic pancreatic cancer phototherapy in vitro and in vivo by near-infrared laser irradiation mediated photothermal and photodynamic combination treatment.
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Affiliation(s)
- Seounghun Kang
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
- Center for RNA Research, Institute for Basic Science (IBS), Seoul National University, Seoul 08826, Republic of Korea
| | - Yeong-Gyu Gil
- Department of Chemistry, Kwangwoon University, 20 Gwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea
| | - Dal-Hee Min
- Department of Chemistry, Seoul National University, Seoul 08826, Republic of Korea
- Center for RNA Research, Institute for Basic Science (IBS), Seoul National University, Seoul 08826, Republic of Korea
- Institute of Biotherapeutics Convergence Technology, Lemonex Inc., Seoul 08826, Republic of Korea
| | - Hongje Jang
- Department of Chemistry, Kwangwoon University, 20 Gwangwoon-ro, Nowon-gu, Seoul 01897, Republic of Korea
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9
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Identification of Two Kinase Inhibitors with Synergistic Toxicity with Low-Dose Hydrogen Peroxide in Colorectal Cancer Cells in vitro. Cancers (Basel) 2020; 12:cancers12010122. [PMID: 31906582 PMCID: PMC7016670 DOI: 10.3390/cancers12010122] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2019] [Accepted: 12/20/2019] [Indexed: 02/06/2023] Open
Abstract
Colorectal carcinoma is among the most common types of cancers. With this disease, diffuse scattering in the abdominal area (peritoneal carcinosis) often occurs before diagnosis, making surgical removal of the entire malignant tissue impossible due to a large number of tumor nodules. Previous treatment options include radiation and its combination with intraperitoneal heat-induced chemotherapy (HIPEC). Both options have strong side effects and are often poor in therapeutic efficacy. Tumor cells often grow and proliferate dysregulated, with enzymes of the protein kinase family often playing a crucial role. The present study investigated whether a combination of protein kinase inhibitors and low-dose induction of oxidative stress (using hydrogen peroxide, H2O2) has an additive cytotoxic effect on murine, colorectal tumor cells (CT26). Protein kinase inhibitors from a library of 80 substances were used to investigate colorectal cancer cells for their activity, morphology, and immunogenicity (immunogenic cancer cell death, ICD) upon mono or combination. Toxic compounds identified in 2D cultures were confirmed in 3D cultures, and additive cytotoxicity was identified for the substances lavendustin A, GF109203X, and rapamycin. Toxicity was concomitant with cell cycle arrest, but except HMGB1, no increased expression of immunogenic markers was identified with the combination treatment. The results were validated for GF109203X and rapamycin but not lavendustin A in the 3D model of different colorectal (HT29, SW480) and pancreatic cancer cell lines (MiaPaca, Panc01). In conclusion, our in vitro data suggest that combining oxidative stress with chemotherapy would be conceivable to enhance antitumor efficacy in HIPEC.
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10
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Sánchez-Álvarez M, Strippoli R, Donadelli M, Bazhin AV, Cordani M. Sestrins as a Therapeutic Bridge between ROS and Autophagy in Cancer. Cancers (Basel) 2019; 11:cancers11101415. [PMID: 31546746 PMCID: PMC6827145 DOI: 10.3390/cancers11101415] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2019] [Revised: 09/15/2019] [Accepted: 09/19/2019] [Indexed: 02/07/2023] Open
Abstract
The regulation of Reactive Oxygen Species (ROS) levels and the contribution therein from networks regulating cell metabolism, such as autophagy and the mTOR-dependent nutrient-sensing pathway, constitute major targets for selective therapeutic intervention against several types of tumors, due to their extensive rewiring in cancer cells as compared to healthy cells. Here, we discuss the sestrin family of proteins—homeostatic transducers of oxidative stress, and drivers of antioxidant and metabolic adaptation—as emerging targets for pharmacological intervention. These adaptive regulators lie at the intersection of those two priority nodes of interest in antitumor intervention—ROS control and the regulation of cell metabolism and autophagy—therefore, they hold the potential not only for the development of completely novel compounds, but also for leveraging on synergistic strategies with current options for tumor therapy and classification/stadiation to achieve personalized medicine.
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Affiliation(s)
- Miguel Sánchez-Álvarez
- Mechanoadaptation & Caveolae Biology Lab, Cell and Developmental Biology Area, Centro Nacional de Investigaciones Cardiovasculares (CNIC). Madrid 28029, Spain.
| | - Raffaele Strippoli
- Department of Molecular Medicine, Sapienza University of Rome, Rome 00161, Italy.
- Gene Expression Laboratory, National Institute for Infectious Diseases "Lazzaro Spallanzani" IRCCS, Rome 00161, Italy.
| | - Massimo Donadelli
- Department of Neurosciences, Biomedicine and Movement Sciences, Section of Biochemistry, University of Verona, Verona 37134, Italy.
| | - Alexandr V Bazhin
- Department of General, Visceral and Transplantation Surgery, Ludwig-Maximilians University, Munich 81377, Germany.
- German Cancer Consortium (DKTK), Partner Site Munich, Munich 80366, Germany.
| | - Marco Cordani
- IMDEA Nanociencia, C/Faraday 9, Ciudad Universitaria de Cantoblanco, Madrid 28049, Spain..
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11
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Chen Y, Deng J, Liu F, Dai P, An Y, Wang Z, Zhao Y. Energy-Free, Singlet Oxygen-Based Chemodynamic Therapy for Selective Tumor Treatment without Dark Toxicity. Adv Healthc Mater 2019; 8:e1900366. [PMID: 31365192 DOI: 10.1002/adhm.201900366] [Citation(s) in RCA: 45] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 07/16/2019] [Indexed: 11/08/2022]
Abstract
Traditional singlet oxygen-based antitumor therapies have been burdened with the necessity of external energy (e.g., light and ultrasound) and harmful dark toxicity. Ascorbate at the pharmacological concentration could accumulate hydrogen peroxide only in the tumor site. It is postulated that the concurrent delivery of ascorbate and nanoparticulate hypochlorous ion (ClO- ) could produce singlet oxygen at the tumor site as an energy-free, tumor-specific therapy. The ClO- is loaded in a hybrid core-shell nanocarrier consisting of a zeolitic imidazolate framework and amphiphilic poloxamer 188. Intracellular singlet oxygen production is verified in 4T1 cells by the cooperation between hybrid nanocarriers and ascorbate, which induces significant apoptotic cell death. Upon intravenous nanocarriers delivery plus intraperitoneal ascorbate administration to xenograft mice, the in vivo antitumor efficacy of this cooperative nanomedicine is demonstrated without noticeable side-effects. This work demonstrates a proof-of-concept of singlet oxygen-based chemodynamic therapy for selective tumor eradication, which produces a novel trigger-free, singlet oxygen-based cancer therapy without the side effects of traditional photodynamic and sonodynamic therapy.
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Affiliation(s)
- Yanrui Chen
- School of Pharmaceutical Science & TechnologyTianjin Key Laboratory for Modern Drug Delivery & High EfficiencyCollaborative Innovation Center of Chemical Science and Engineering (Tianjin)Tianjin University Tianjin 300072 P. R. China
| | - Jian Deng
- School of Pharmaceutical Science & TechnologyTianjin Key Laboratory for Modern Drug Delivery & High EfficiencyCollaborative Innovation Center of Chemical Science and Engineering (Tianjin)Tianjin University Tianjin 300072 P. R. China
| | - Fang Liu
- School of Pharmaceutical Science & TechnologyTianjin Key Laboratory for Modern Drug Delivery & High EfficiencyCollaborative Innovation Center of Chemical Science and Engineering (Tianjin)Tianjin University Tianjin 300072 P. R. China
| | - Peipei Dai
- School of Pharmaceutical Science & TechnologyTianjin Key Laboratory for Modern Drug Delivery & High EfficiencyCollaborative Innovation Center of Chemical Science and Engineering (Tianjin)Tianjin University Tianjin 300072 P. R. China
| | - Yang An
- School of Pharmaceutical Science & TechnologyTianjin Key Laboratory for Modern Drug Delivery & High EfficiencyCollaborative Innovation Center of Chemical Science and Engineering (Tianjin)Tianjin University Tianjin 300072 P. R. China
| | - Zheng Wang
- School of Pharmaceutical Science & TechnologyTianjin Key Laboratory for Modern Drug Delivery & High EfficiencyCollaborative Innovation Center of Chemical Science and Engineering (Tianjin)Tianjin University Tianjin 300072 P. R. China
| | - Yanjun Zhao
- School of Pharmaceutical Science & TechnologyTianjin Key Laboratory for Modern Drug Delivery & High EfficiencyCollaborative Innovation Center of Chemical Science and Engineering (Tianjin)Tianjin University Tianjin 300072 P. R. China
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12
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Buranasudja V, Doskey CM, Gibson AR, Wagner BA, Du J, Gordon DJ, Koppenhafer SL, Cullen JJ, Buettner GR. Pharmacologic Ascorbate Primes Pancreatic Cancer Cells for Death by Rewiring Cellular Energetics and Inducing DNA Damage. Mol Cancer Res 2019; 17:2102-2114. [PMID: 31337671 DOI: 10.1158/1541-7786.mcr-19-0381] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2019] [Revised: 06/21/2019] [Accepted: 07/17/2019] [Indexed: 01/21/2023]
Abstract
The clinical potential of pharmacologic ascorbate (P-AscH-; intravenous delivery achieving mmol/L concentrations in blood) as an adjuvant in cancer therapy is being reevaluated. At mmol/L concentrations, P-AscH- is thought to exhibit anticancer activity via generation of a flux of H2O2 in tumors, which leads to oxidative distress. Here, we use cell culture models of pancreatic cancer to examine the effects of P-AscH- on DNA damage, and downstream consequences, including changes in bioenergetics. We have found that the high flux of H2O2 produced by P-AscH- induces DNA damage. In response to this DNA damage, we observed that PARP1 is hyperactivated. Using our unique absolute quantitation, we found that P-AscH- mediated the overactivation of PARP1, which results in consumption of NAD+, and subsequently depletion of ATP leading to mitotic cell death. We have also found that Chk1 plays a major role in the maintenance of genomic integrity following treatment with P-AscH-. Hyperactivation of PARP1 and DNA repair are ATP-consuming processes. Using a Seahorse XF96 analyzer, we demonstrated that the severe decrease in ATP after challenging with P-AscH- is because of increased demand, not changes in the rate of production. Genetic deletion and pharmacologic inhibition of PARP1 preserved both NAD+ and ATP; however, the toxicity of P-AscH- remained. These data indicate that disruption of bioenergetics is a secondary factor in the toxicity of P-AscH-; damage to DNA appears to be the primary factor. IMPLICATIONS: Efforts to leverage P-AscH- in cancer therapy should first focus on DNA damage.
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Affiliation(s)
- Visarut Buranasudja
- Interdisciplinary Graduate Program in Human Toxicology, The University of Iowa, Iowa City, Iowa
| | - Claire M Doskey
- Interdisciplinary Graduate Program in Human Toxicology, The University of Iowa, Iowa City, Iowa
| | - Adrienne R Gibson
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, Iowa
| | - Brett A Wagner
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, Iowa
| | - Juan Du
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, Iowa.,Department of Surgery, The University of Iowa, Iowa City, Iowa
| | - David J Gordon
- Department of Pediatrics, The University of Iowa, Iowa City, Iowa
| | | | - Joseph J Cullen
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, Iowa.,Department of Surgery, The University of Iowa, Iowa City, Iowa.,Veterans Affairs Medical Center, The University of Iowa, Iowa City, Iowa
| | - Garry R Buettner
- Interdisciplinary Graduate Program in Human Toxicology, The University of Iowa, Iowa City, Iowa. .,Free Radical and Radiation Biology Program, Department of Radiation Oncology, The University of Iowa, Iowa City, Iowa
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