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Feng L, Sun J, Xia L, Shi Q, Hou Y, Zhang L, Li M, Fan C, Sun B. Ferroptosis mechanism and Alzheimer's disease. Neural Regen Res 2024; 19:1741-1750. [PMID: 38103240 PMCID: PMC10960301 DOI: 10.4103/1673-5374.389362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 07/05/2023] [Accepted: 09/09/2023] [Indexed: 12/18/2023] Open
Abstract
Regulated cell death is a genetically determined form of programmed cell death that commonly occurs during the development of living organisms. This process plays a crucial role in modulating homeostasis and is evolutionarily conserved across a diverse range of living organisms. Ferroptosis is a classic regulatory mode of cell death. Extensive studies of regulatory cell death in Alzheimer's disease have yielded increasing evidence that ferroptosis is closely related to the occurrence, development, and prognosis of Alzheimer's disease. This review summarizes the molecular mechanisms of ferroptosis and recent research advances in the role of ferroptosis in Alzheimer's disease. Our findings are expected to serve as a theoretical and experimental foundation for clinical research and targeted therapy for Alzheimer's disease.
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Affiliation(s)
- Lina Feng
- Shandong Key Laboratory of TCM Multi-Target Intervention and Disease Control, the Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong Province, China
| | - Jingyi Sun
- Shandong Key Laboratory of TCM Multi-Target Intervention and Disease Control, the Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong Province, China
| | - Ling Xia
- Shandong Key Laboratory of TCM Multi-Target Intervention and Disease Control, the Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong Province, China
| | - Qiang Shi
- Shandong Key Laboratory of TCM Multi-Target Intervention and Disease Control, the Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong Province, China
| | - Yajun Hou
- Shandong Key Laboratory of TCM Multi-Target Intervention and Disease Control, the Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong Province, China
| | - Lili Zhang
- Department of Internal Medicine, Taian Traffic Hospital, Taian, Shandong Province, China
| | - Mingquan Li
- Department of Neurology, the Third Affiliated Clinical Hospital of Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - Cundong Fan
- Shandong Key Laboratory of TCM Multi-Target Intervention and Disease Control, the Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong Province, China
| | - Baoliang Sun
- Shandong Key Laboratory of TCM Multi-Target Intervention and Disease Control, the Second Affiliated Hospital of Shandong First Medical University, Taian, Shandong Province, China
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Hillebrand L, Liang XJ, Serafim RAM, Gehringer M. Emerging and Re-emerging Warheads for Targeted Covalent Inhibitors: An Update. J Med Chem 2024; 67:7668-7758. [PMID: 38711345 DOI: 10.1021/acs.jmedchem.3c01825] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/08/2024]
Abstract
Covalent inhibitors and other types of covalent modalities have seen a revival in the past two decades, with a variety of new targeted covalent drugs having been approved in recent years. A key feature of such molecules is an intrinsically reactive group, typically a weak electrophile, which enables the irreversible or reversible formation of a covalent bond with a specific amino acid of the target protein. This reactive group, often called the "warhead", is a critical determinant of the ligand's activity, selectivity, and general biological properties. In 2019, we summarized emerging and re-emerging warhead chemistries to target cysteine and other amino acids (Gehringer, M.; Laufer, S. A. J. Med. Chem. 2019, 62, 5673-5724; DOI: 10.1021/acs.jmedchem.8b01153). Since then, the field has rapidly evolved. Here we discuss the progress on covalent warheads made since our last Perspective and their application in medicinal chemistry and chemical biology.
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Affiliation(s)
- Laura Hillebrand
- Department of Pharmaceutical/Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Xiaojun Julia Liang
- Department of Pharmaceutical/Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided & Functionally Instructed Tumor Therapies", University of Tübingen, 72076 Tübingen, Germany
| | - Ricardo A M Serafim
- Department of Pharmaceutical/Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
| | - Matthias Gehringer
- Department of Pharmaceutical/Medicinal Chemistry, Eberhard Karls University Tübingen, Auf der Morgenstelle 8, 72076 Tübingen, Germany
- Cluster of Excellence iFIT (EXC 2180) "Image-Guided & Functionally Instructed Tumor Therapies", University of Tübingen, 72076 Tübingen, Germany
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Postiglione AE, Delange AM, Ali MF, Wang EY, Houben M, Hahn SL, Khoury MG, Roark CM, Davis M, Reid RW, Pease JB, Loraine AE, Muday GK. Flavonols improve thermotolerance in tomato pollen during germination and tube elongation by maintaining ROS homeostasis. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2023.12.23.573189. [PMID: 38187649 PMCID: PMC10769439 DOI: 10.1101/2023.12.23.573189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2024]
Abstract
Elevated temperatures impair pollen performance and reproductive success, resulting in lower crop yields. The Solanum lycopersicum anthocyanin reduced ( are ) mutant has a FLAVANONE 3 HYDROXYLASE ( F3H ) gene mutation resulting in impaired synthesis of flavonol antioxidants. The are mutant has reduced pollen performance and seed set relative to the VF36 parental line, which is accentuated at elevated temperatures. Transformation of are with the wild-type F3H gene, or chemical complementation with flavonols, prevented temperature-dependent ROS accumulation in pollen and reversed are's reduced viability, germination, and tube elongation to VF36 levels. VF36 transformed with an F3H overexpression construct prevented temperature driven ROS increases and impaired pollen performance, revealing thermotolerance results from elevated flavonol synthesis. Although stigmas of are had reduced flavonols and elevated ROS, the growth of are pollen tubes were similarly impaired in both are and VF36 pistils. RNA-Seq was performed at optimal and stress temperatures in are , VF36, and the VF36 F3H overexpression line at multiple timepoints across pollen tube elongation. Differentially expressed gene numbers increased with duration of elevated temperature in all genotypes, with the largest number in are . These findings suggest potential agricultural interventions to combat the negative effects of heat-induced ROS in pollen that leads to reproductive failure. One sentence summary Flavonol antioxidants reduce the negative impacts of elevated temperatures on pollen performance by reducing levels of heat induced reactive oxygen species and modulation of heat-induced changes in the pollen transcriptome.
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Kumar S, Dhiman M. Helicobacter pylori secretary Proteins-Induced oxidative stress and its role in NLRP3 inflammasome activation. Cell Immunol 2024; 399-400:104811. [PMID: 38518686 DOI: 10.1016/j.cellimm.2024.104811] [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: 07/12/2023] [Revised: 01/09/2024] [Accepted: 01/15/2024] [Indexed: 03/24/2024]
Abstract
Helicobacter pylori-associated stomach infection is a leading cause of gastric ulcer and related cancer. H. pylori modulates the functions of infiltrated immune cells to survive the killing by reactive oxygen and nitrogen species (ROS and RNS) produced by these cells. Uncontrolled immune responses further produce excess ROS and RNS which lead to mucosal damage. The persistent oxidative stress is a major cause of gastric cancer. H. pylori regulates nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOXs), nitric oxide synthase 2 (NOS2), and polyamines to control ROS and RNS release through lesser-known mechanisms. ROS and RNS produced by these pathways differentiate macrophages and T cells from protective to inflammatory phenotype. Pathogens-associated molecular patterns (PAMPs) induced ROS activates nuclear oligomerization domain (NOD), leucine rich repeats (LRR) and pyrin domain-containing protein 3 (NLRP3) inflammasome for the release of pro-inflammatory cytokines. This study evaluates the role of H. pylori secreted concentrated proteins (HPSCP) related oxidative stress role in NLRP3 inflammasome activation and macrophage differentiation. To perceive the role of ROS/RNS, THP-1 and AGS cells were treated with 10 μM diphenyleneiodonium (DPI), 50 μM salicyl hydroxamic acid (SHX), 5 μM Carbonyl cyanide-4-(trifluoromethoxy) phenylhydrazone (FCCP), which are specific inhibitors of NADPH oxidase (NOX), Myeloperoxidase (MPO), and mitochondrial oxidative phosphorylation respectively. Cells were also treated with 10 μM of NOS2 inhibitor l-NMMA and 10 μM of N-acetyl cysteine (NAC), a free radical scavenger·H2O2 (100 μM) treated and untreated cells were used as positive controls and negative control respectively. The expression of gp91phox (NOX2), NOS2, NLRP3, CD86 and CD163 was analyzed through fluorescent microscopy. THP-1 macrophages growth was unaffected whereas the gastric epithelial AGS cells proliferated in response to higher concentration of HPSCP. ROS and myeloperoxidase (MPO) level increased in THP-1 cells and nitric oxide (NO) and lipid peroxidation significantly decreased in AGS cells. gp91phox expression was unchanged, whereas NOS2 and NLRP3 downregulated in response to HPSCP, but increased after inhibition of NO, ROS and MPO in THP-1 cells. HPSCP upregulated the expression of M1 and M2 macrophage markers, CD86 and CD163 respectively, which was decreased after the inhibition of ROS. This study concludes that there are multiple pathways which are generating ROS during H. pylori infection which further regulates other cellular processes. NO is closely associated with MPO and inhibition of NLRP3 inflammasome. The low levels of NO and MPO regulates gastrointestinal tract homeostasis and overcomes the inflammatory response of NLRP3. The ROS also plays crucial role in macrophage polarization hence alter the immune responses duing H. pylori pathogenesis.
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Affiliation(s)
- Sandeep Kumar
- Department of Microbiology, School of Basic Sciences, Central University of Punjab, Bathinda, 151 401 Punjab, India
| | - Monisha Dhiman
- Department of Microbiology, School of Basic Sciences, Central University of Punjab, Bathinda, 151 401 Punjab, India.
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Borović Šunjić S, Jaganjac M, Vlainić J, Halasz M, Žarković N. Lipid Peroxidation-Related Redox Signaling in Osteosarcoma. Int J Mol Sci 2024; 25:4559. [PMID: 38674143 PMCID: PMC11050283 DOI: 10.3390/ijms25084559] [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: 03/29/2024] [Revised: 04/12/2024] [Accepted: 04/17/2024] [Indexed: 04/28/2024] Open
Abstract
Oxidative stress and lipid peroxidation play important roles in numerous physiological and pathological processes, while the bioactive products of lipid peroxidation, lipid hydroperoxides and reactive aldehydes, act as important mediators of redox signaling in normal and malignant cells. Many types of cancer, including osteosarcoma, express altered redox signaling pathways. Such redox signaling pathways protect cancer cells from the cytotoxic effects of oxidative stress, thus supporting malignant transformation, and eventually from cytotoxic anticancer therapies associated with oxidative stress. In this review, we aim to explore the status of lipid peroxidation in osteosarcoma and highlight the involvement of lipid peroxidation products in redox signaling pathways, including the involvement of lipid peroxidation in osteosarcoma therapies.
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Affiliation(s)
- Suzana Borović Šunjić
- Laboratory for Oxidative Stress, Division of Molecular Medicine, Ruder Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia; (M.J.); (J.V.); (M.H.)
| | | | | | | | - Neven Žarković
- Laboratory for Oxidative Stress, Division of Molecular Medicine, Ruder Boskovic Institute, Bijenicka 54, 10000 Zagreb, Croatia; (M.J.); (J.V.); (M.H.)
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Lee WK, Probst S, Scharner B, Deba T, Dahdouh F, Thévenod F. Distinct concentration-dependent oxidative stress profiles by cadmium in a rat kidney proximal tubule cell line. Arch Toxicol 2024; 98:1043-1059. [PMID: 38289529 PMCID: PMC10944451 DOI: 10.1007/s00204-023-03677-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 12/20/2023] [Indexed: 03/17/2024]
Abstract
Levels and chemical species of reactive oxygen/nitrogen species (ROS/RNS) determine oxidative eustress and distress. Abundance of uptake pathways and high oxygen consumption for ATP-dependent transport makes the renal proximal tubule particularly susceptible to cadmium (Cd2+)-induced oxidative stress by targeting ROS/RNS generation or antioxidant defence mechanisms, such as superoxide dismutase (SOD) or H2O2-metabolizing catalase (CAT). Though ROS/RNS are well-evidenced, the role of distinct ROS profiles in Cd2+ concentration-dependent toxicity is not clear. In renal cells, Cd2+ (10-50 µM) oxidized dihydrorhodamine 123, reaching a maximum at 2-3 h. Increases (up to fourfold) in lipid peroxidation by TBARS assay and H2O2 by Amplex Red were evident within 30 min. ROS and loss in cell viability by MTT assay with 50 µM Cd2+ could not be fully reversed by SOD mimetics Tempol and MnTBAP nor by SOD1 overexpression, whereas CAT expression and α-tocopherol were effective. SOD and CAT activities were attenuated below controls only with >6 h 50 µM Cd2+, yet augmented by up to 1.5- and 1.2-fold, respectively, by 10 µM Cd2+. Moreover, 10 µM, but not 25-50 µM Cd2+, caused 1.7-fold increase in superoxide anion (O2•-), detected by dihydroethidium, paralled by loss in cell viability, that was abolished by Tempol, MnTBAP, α-tocopherol and SOD1 or CAT overexpression. H2O2-generating NADPH oxidase 4 (NOX4) was attenuated by ~50% with 10 µM Cd2+ at 3 h compared to upregulation by 50 µM Cd2+ (~1.4-fold, 30 min), which was sustained for 24 h. In summary, O2•- predominates with low-moderate Cd2+, driving an adaptive response, whereas oxidative stress by elevated H2O2 at high Cd2+ triggers cell death signaling pathways.Highlights Different levels of reactive oxygen species are generated, depending on cadmium concentration. Superoxide anion predominates and H2O2 is suppressed with low cadmium representing oxidative eustress. High cadmium fosters H2O2 by inhibiting catalase and increasing NOX4 leading to oxidative distress. Superoxide dismutase mimetics and overexpression were less effective with high versus low cadmium. Oxidative stress profile could dictate downstream signalling pathways.
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Affiliation(s)
- Wing-Kee Lee
- Institute of Physiology, Pathophysiology and Toxicology, ZBAF, Witten/Herdecke University, Stockumer Str. 12, 58453, Witten, Germany.
- Physiology and Pathophysiology of Cells and Membranes, Medical School OWL, Bielefeld University, Morgenbreede 1, 33615, Bielefeld, Germany.
| | - Stephanie Probst
- Institute of Physiology, Pathophysiology and Toxicology, ZBAF, Witten/Herdecke University, Stockumer Str. 12, 58453, Witten, Germany
| | - Bettina Scharner
- Institute of Physiology, Pathophysiology and Toxicology, ZBAF, Witten/Herdecke University, Stockumer Str. 12, 58453, Witten, Germany
| | - Timo Deba
- Institute of Physiology, Pathophysiology and Toxicology, ZBAF, Witten/Herdecke University, Stockumer Str. 12, 58453, Witten, Germany
- Department of General Paediatrics, Klinik für Kinder- und Jugendmedizin, University Hospital Münster, Albert-Schweitzer-Campus 1, 48149, Münster, Germany
| | - Faouzi Dahdouh
- Institute of Physiology, Pathophysiology and Toxicology, ZBAF, Witten/Herdecke University, Stockumer Str. 12, 58453, Witten, Germany
- Department of Natural Sciences, Higher School of Professors for Technological Education, Skikda, Algeria
| | - Frank Thévenod
- Institute of Physiology, Pathophysiology and Toxicology, ZBAF, Witten/Herdecke University, Stockumer Str. 12, 58453, Witten, Germany
- Physiology and Pathophysiology of Cells and Membranes, Medical School OWL, Bielefeld University, Morgenbreede 1, 33615, Bielefeld, Germany
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Boscaro C, Schimdt G, Cignarella A, Dal Maso L, Bolego C, Trevisi L. The antiangiogenic effect of digitoxin is dependent on a ROS-elicited RhoA/ROCK pathway activation. Biochem Pharmacol 2024; 222:116049. [PMID: 38342347 DOI: 10.1016/j.bcp.2024.116049] [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: 12/21/2023] [Revised: 01/16/2024] [Accepted: 02/06/2024] [Indexed: 02/13/2024]
Abstract
We previously showed that digitoxin inhibits angiogenesis and cancer cell proliferation and migration and these effects were associated to protein tyrosine kinase 2 (FAK) inhibition. Considering the interactions between FAK and Rho GTPases regulating cell cytoskeleton and movement, we investigated the involvement of RhoA and Rac1 in the antiangiogenic effect of digitoxin. Phalloidin staining of human umbilical vein endothelial cells (HUVECs) showed the formation of stress fibers in cells treated with 10 nM digitoxin. By Rhotekin- and Pak1- pull down assays, detecting the GTP-bound form of GTPases, we observed that digitoxin (10-25 nM) induced sustained (0.5-6 h) RhoA activation with no effect on Rac1. Furthermore, inhibition of HUVEC migration and capillary-like tube formation by digitoxin was counteracted by hindering RhoA-ROCK axis with RhoA silencing or Y-27632 treatment. Digitoxin did not decrease p190RhoGAP phosphorylation at Tyr1105 (a site targeted by FAK), suggesting that RhoA activation was independent from FAK inhibition. Because increasing evidence points to a redox regulation of RhoA, we measured intracellular ROS and found that digitoxin treatment enhanced ROS levels in a concentration-dependent manner (1-25 nM). Notably, the flavoprotein inhibitor DPI or the pan-NADPH oxidase (NOX) inhibitor VAS-2870 antagonized both ROS increase and RhoA activation by digitoxin. Our results provide evidence that inhibition of HUVEC migration and tube formation by digitoxin is dependent on ROS production by endothelial NOX, which leads to the activation of RhoA/ROCK pathway. Digitoxin effects on proteins regulating cytoskeletal organization and cell motility could have a wider impact on cancer progression, beyond the antiangiogenic activity.
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Affiliation(s)
| | - Gudula Schimdt
- Institute for Experimental and Clinical Pharmacology and Toxicology, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | | | - Lucia Dal Maso
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Chiara Bolego
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy
| | - Lucia Trevisi
- Department of Pharmaceutical and Pharmacological Sciences, University of Padova, Padova, Italy.
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Zhang H, Liu X, Tang C, Lv S, Zhang S, Wu J, Wang P. PbRbohH/J mediates ROS generation to regulate the growth of pollen tube in pear. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2024; 207:108342. [PMID: 38219427 DOI: 10.1016/j.plaphy.2024.108342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/08/2023] [Revised: 12/21/2023] [Accepted: 01/05/2024] [Indexed: 01/16/2024]
Abstract
Respiratory burst oxidase homolog (Rboh) family genes play crucial functions in development and growth. However, comprehensive and systematic investigation of Rboh family members in Rosaceae and their specific functions during pear pollen development are still limited. In the study, 63 Rboh genes were identified from eight Rosaceae genomes (Malus domestica, Pyrus bretschneideri, Pyrus communis, Prunus persica, Rubus occidentalis, Fragaria vesca, Prunus mume and Prunus avium) and divided into seven main subfamilies (I-VII) according to phylogenetic and structural features. Different modes of gene duplication led to the expansion of Rboh family, with purifying selection playing a vital role in the evolution of Rboh genes. In addition, RNA sequencing and qRT-PCR results indicated that PbRbohH and PbRbohJ were specifically high-expressed in pear pollen. Subsequently, subcellular localization revealed that PbRbohH/J distributed at the plasma membrane. Furthermore, by pharmacological analysis and antisense oligodeoxynucleotide assay, PbRbohH/J were demonstrated to mediate the formation of reactive oxygen species (ROS) to manage pollen tube growth. In conclusion, our results provide useful insights into the functions, expression patterns, evolutionary history of the Rboh genes in pear and other Rosaceae species.
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Affiliation(s)
- Hao Zhang
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Xueying Liu
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Chao Tang
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Shouzheng Lv
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Shaoling Zhang
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China
| | - Juyou Wu
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
| | - Peng Wang
- Sanya Institute of Nanjing Agricultural University, National Key Laboratory of Crop Genetics & Germplasm Enhancement and Utilization, College of Horticulture, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, China.
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Reis J, Gorgulla C, Massari M, Marchese S, Valente S, Noce B, Basile L, Törner R, Cox H, Viennet T, Yang MH, Ronan MM, Rees MG, Roth JA, Capasso L, Nebbioso A, Altucci L, Mai A, Arthanari H, Mattevi A. Targeting ROS production through inhibition of NADPH oxidases. Nat Chem Biol 2023; 19:1540-1550. [PMID: 37884805 DOI: 10.1038/s41589-023-01457-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2023] [Accepted: 09/21/2023] [Indexed: 10/28/2023]
Abstract
NADPH oxidases (NOXs) are transmembrane enzymes that are devoted to the production of reactive oxygen species (ROS). In cancers, dysregulation of NOX enzymes affects ROS production, leading to redox unbalance and tumor progression. Consequently, NOXs are a drug target for cancer therapeutics, although current therapies have off-target effects: there is a need for isoenzyme-selective inhibitors. Here, we describe fully validated human NOX inhibitors, obtained from an in silico screen, targeting the active site of Cylindrospermum stagnale NOX5 (csNOX5). The hits are validated by in vitro and in cellulo enzymatic and binding assays, and their binding modes to the dehydrogenase domain of csNOX5 studied via high-resolution crystal structures. A high-throughput screen in a panel of cancer cells shows activity in selected cancer cell lines and synergistic effects with KRAS modulators. Our work lays the foundation for the development of inhibitor-based methods for controlling the tightly regulated and highly localized ROS sources.
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Affiliation(s)
- Joana Reis
- Department of Biology and Biotechnology Lazzaro Spallanzani, University of Pavia, Pavia, Italy
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Christoph Gorgulla
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
- Department of Physics, Faculty of Arts and Sciences, Harvard University, Cambridge, MA, USA
| | - Marta Massari
- Department of Biology and Biotechnology Lazzaro Spallanzani, University of Pavia, Pavia, Italy
| | - Sara Marchese
- Department of Biology and Biotechnology Lazzaro Spallanzani, University of Pavia, Pavia, Italy
| | - Sergio Valente
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Rome, Italy
| | - Beatrice Noce
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Rome, Italy
| | - Lorenzo Basile
- Department of Biology and Biotechnology Lazzaro Spallanzani, University of Pavia, Pavia, Italy
| | - Ricarda Törner
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Huel Cox
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Thibault Viennet
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Moon Hee Yang
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | | | | | | | - Lucia Capasso
- Department of Precision Medicine, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Angela Nebbioso
- Department of Precision Medicine, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Lucia Altucci
- Department of Precision Medicine, University of Campania Luigi Vanvitelli, Naples, Italy
| | - Antonello Mai
- Department of Drug Chemistry and Technologies, Sapienza University of Rome, Rome, Italy.
| | - Haribabu Arthanari
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA, USA.
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA.
| | - Andrea Mattevi
- Department of Biology and Biotechnology Lazzaro Spallanzani, University of Pavia, Pavia, Italy.
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Zang J, Peters F, Cambet Y, Cifuentes-Pagano E, Hissabu MMS, Dustin CM, Svensson LH, Olesen MM, Poulsen MFL, Jacobsen S, Tuelung PS, Narayanan D, Langkilde AE, Gajhede M, Pagano PJ, Jaquet V, Vilhardt F, Bach A. Targeting NOX2 with Bivalent Small-Molecule p47phox-p22phox Inhibitors. J Med Chem 2023; 66:14963-15005. [PMID: 37857466 DOI: 10.1021/acs.jmedchem.3c01548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2023]
Abstract
Nicotinamide adenine dinucleotide phosphate oxidase isoform 2 (NOX2) is an enzymatic complex whose function is the regulated generation of reactive oxygen species (ROS). NOX2 activity is central to redox signaling events and antibacterial response, but excessive ROS production by NOX2 leads to oxidative stress and inflammation in a range of diseases. The protein-protein interaction between the NOX2 subunits p47phox and p22phox is essential for NOX2 activation, thus p47phox is a potential drug target. Previously, we identified 2-aminoquinoline as a fragment hit toward p47phoxSH3A-B and converted it to a bivalent small-molecule p47phox-p22phox inhibitor (Ki = 20 μM). Here, we systematically optimized the bivalent compounds by exploring linker types and positioning as well as substituents on the 2-aminoquinoline part and characterized the bivalent binding mode with biophysical methods. We identified several compounds with submicromolar binding affinities and cellular activity and thereby demonstrated that p47phox can be targeted by potent small molecules.
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Affiliation(s)
- Jie Zang
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Felix Peters
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Yves Cambet
- READS unit, Centre Médical Universitaire, University of Geneva, Geneva CH-1211, Switzerland
| | - Eugenia Cifuentes-Pagano
- Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Department of Pharmacology and ChemicalBiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Munira Mohamed Shishay Hissabu
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Christopher M Dustin
- Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Department of Pharmacology and ChemicalBiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Lars Henrik Svensson
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Martin Mariboe Olesen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Mathias Feldt Lomholt Poulsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Stig Jacobsen
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Pernille Sønderby Tuelung
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Dilip Narayanan
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Annette Eva Langkilde
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Michael Gajhede
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
| | - Patrick J Pagano
- Pittsburgh Heart, Lung, Blood and Vascular Medicine Institute, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
- Department of Pharmacology and ChemicalBiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15261, United States
| | - Vincent Jaquet
- READS unit, Centre Médical Universitaire, University of Geneva, Geneva CH-1211, Switzerland
- Department of Pathology and Immunology, Centre Médical Universitaire, University of Geneva, Geneva CH-1211, Switzerland
| | - Frederik Vilhardt
- Institute of Cellular and Molecular Medicine, Faculty of Health and Medical Sciences, University of Copenhagen, Blegdamsvej 3, DK-2200 Copenhagen, Denmark
| | - Anders Bach
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Universitetsparken 2, DK-2100 Copenhagen, Denmark
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11
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Fraga CG, Oteiza PI, Hid EJ, Galleano M. (Poly)phenols and the regulation of NADPH oxidases. Redox Biol 2023; 67:102927. [PMID: 37857000 PMCID: PMC10587761 DOI: 10.1016/j.redox.2023.102927] [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: 08/07/2023] [Revised: 10/06/2023] [Accepted: 10/07/2023] [Indexed: 10/21/2023] Open
Abstract
Nicotinamide adenine dinucleotide phosphate (NADPH) oxidases (NOXs) are enzymes that generate superoxide anion (O2•-) and hydrogen peroxide (H2O2), and that are widely distributed in mammalian tissues. Many bioactives, especially plant (poly)phenols are being studied for their capacity to regulate NOXs. The modulation of these enzymes are of central relevance to maintain redox homeostasis and regulate cell signaling. In in vitro and ex vivo assays, and in experimental animal models, different (poly)phenols are able to modulate NOX-dependent generation of O2•- and H2O2. Mechanistically, most of the known effects of (poly)phenols and of their metabolites on NOX1, NOX2, and NOX4, include the modulation of: i) the expression of the different constituent subunits, and/or ii) posttranslational modifications involved in the assembly and translocation of the protein complexes. Very limited evidence is available on a direct action of (poly)phenols on NOX active site (electron-transferring protein). Moreover, it is suggested that the regulation by (poly)phenols of systemic events, e.g. inflammation, is frequently associated with their capacity to regulate NOX activation. Although of physiological significance, more studies are needed to understand the specific targets/mechanisms of NOX regulation by (poly)phenols, and the (poly)phenol chemical structures and moieties directly involved in the observed effects. It should be kept in mind the difficulties of NOX's studies associated with the complexity of NOXs biochemistry and the methodological limitations of O2•- and H2O2 the determinations. Studies relating human ingestion of specific (poly)phenols, with NOX activity and disease conditions, are guaranteed to better understand the health importance of (poly)phenol consumption and the involvement of NOXs as biological targets.
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Affiliation(s)
- Cesar G Fraga
- Fisicoquímica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina; Instituto de Bioquímica y Medicina Molecular (IBIMOL), UBA-CONICET, Buenos Aires, Argentina; Department of Nutrition University of California, Davis, USA
| | - Patricia I Oteiza
- Department of Nutrition University of California, Davis, USA; Department of Environmental Toxicology, University of California, Davis, USA
| | - Ezequiel J Hid
- Fisicoquímica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina; Instituto de Bioquímica y Medicina Molecular (IBIMOL), UBA-CONICET, Buenos Aires, Argentina
| | - Monica Galleano
- Fisicoquímica, Facultad de Farmacia y Bioquímica, Universidad de Buenos Aires, Buenos Aires, Argentina; Instituto de Bioquímica y Medicina Molecular (IBIMOL), UBA-CONICET, Buenos Aires, Argentina.
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12
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Cipriano A, Viviano M, Feoli A, Milite C, Sarno G, Castellano S, Sbardella G. NADPH Oxidases: From Molecular Mechanisms to Current Inhibitors. J Med Chem 2023; 66:11632-11655. [PMID: 37650225 PMCID: PMC10510401 DOI: 10.1021/acs.jmedchem.3c00770] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2023] [Indexed: 09/01/2023]
Abstract
NADPH oxidases (NOXs) form a family of electron-transporting membrane enzymes whose main function is reactive oxygen species (ROS) generation. Strong evidence suggests that ROS produced by NOX enzymes are major contributors to oxidative damage under pathologic conditions. Therefore, blocking the undesirable actions of these enzymes is a therapeutic strategy for treating various pathological disorders, such as cardiovascular diseases, inflammation, and cancer. To date, identification of selective NOX inhibitors is quite challenging, precluding a pharmacologic demonstration of NOX as therapeutic targets in vivo. The aim of this Perspective is to furnish an updated outlook about the small-molecule NOX inhibitors described over the last two decades. Structures, activities, and in vitro/in vivo specificity are discussed, as well as the main biological assays used.
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Affiliation(s)
- Alessandra Cipriano
- Department
of Pharmacy, Epigenetic Med Chem Lab, and PhD Program in Drug Discovery and
Development, University of Salerno, via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Monica Viviano
- Department
of Pharmacy, Epigenetic Med Chem Lab, and PhD Program in Drug Discovery and
Development, University of Salerno, via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Alessandra Feoli
- Department
of Pharmacy, Epigenetic Med Chem Lab, and PhD Program in Drug Discovery and
Development, University of Salerno, via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Ciro Milite
- Department
of Pharmacy, Epigenetic Med Chem Lab, and PhD Program in Drug Discovery and
Development, University of Salerno, via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Giuliana Sarno
- Department
of Pharmacy, Epigenetic Med Chem Lab, and PhD Program in Drug Discovery and
Development, University of Salerno, via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Sabrina Castellano
- Department
of Pharmacy, Epigenetic Med Chem Lab, and PhD Program in Drug Discovery and
Development, University of Salerno, via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
| | - Gianluca Sbardella
- Department
of Pharmacy, Epigenetic Med Chem Lab, and PhD Program in Drug Discovery and
Development, University of Salerno, via Giovanni Paolo II 132, I-84084 Fisciano, Salerno, Italy
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13
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Juric M, Rawat V, Amaradhi R, Zielonka J, Ganesh T. Novel NADPH Oxidase-2 Inhibitors as Potential Anti-Inflammatory and Neuroprotective Agents. Antioxidants (Basel) 2023; 12:1660. [PMID: 37759963 PMCID: PMC10525516 DOI: 10.3390/antiox12091660] [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: 07/20/2023] [Revised: 08/12/2023] [Accepted: 08/18/2023] [Indexed: 09/29/2023] Open
Abstract
A family of seven NADPH oxidase enzymes (Nox1-5, Duox1-2) has been implicated in a variety of diseases, including inflammatory lung diseases, neurodegenerative diseases, cardiovascular diseases, and cancer. Here, we report the results of our studies aimed at developing novel brain-permeable Nox2 inhibitors with potential application as neuroprotective agents. Using cell-based assays, we identified a novel Nox2 inhibitor, TG15-132, that prevents PMA-stimulated oxygen consumption and reactive oxygen species (superoxide radical anion and hydrogen peroxide) formation upon acute treatment in differentiated HL60 cells. Long-term treatment with TG15-132 attenuates the induction of genes encoding Nox2 subunits, several inflammatory cytokines, and iNOS in differentiated THP-1 cells. Moreover, TG15-132 shows a relatively long plasma half-life (5.6 h) and excellent brain permeability, with a brain-to-plasma ratio (>5-fold) in rodent models. Additionally, TG15-132 does not cause any toxic effects on vital organs or blood biomarkers of toxicity in mice upon chronic dosing for seven days. We propose that TG15-132 may be used as a Nox2 inhibitor and a potential neuroprotective agent, with possible further structural modifications to increase its potency.
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Affiliation(s)
- Matea Juric
- Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI 53226, USA;
| | - Varun Rawat
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA 30322, USA; (V.R.); (R.A.)
| | - Radhika Amaradhi
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA 30322, USA; (V.R.); (R.A.)
| | - Jacek Zielonka
- Department of Biophysics, Medical College of Wisconsin, Milwaukee, WI 53226, USA;
| | - Thota Ganesh
- Department of Pharmacology and Chemical Biology, Emory University School of Medicine, Atlanta, GA 30322, USA; (V.R.); (R.A.)
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14
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Kumar S, Stainer A, Dubrulle J, Simpkins C, Cooper JA. Cas phosphorylation regulates focal adhesion assembly. eLife 2023; 12:e90234. [PMID: 37489578 PMCID: PMC10435235 DOI: 10.7554/elife.90234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2023] [Accepted: 07/19/2023] [Indexed: 07/26/2023] Open
Abstract
Integrin-mediated cell attachment rapidly induces tyrosine kinase signaling. Despite years of research, the role of this signaling in integrin activation and focal adhesion assembly is unclear. We provide evidence that the Src-family kinase (SFK) substrate Cas (Crk-associated substrate, p130Cas, BCAR1) is phosphorylated and associated with its Crk/CrkL effectors in clusters that are precursors of focal adhesions. The initial phospho-Cas clusters contain integrin β1 in its inactive, bent closed, conformation. Later, phospho-Cas and total Cas levels decrease as integrin β1 is activated and core focal adhesion proteins including vinculin, talin, kindlin, and paxillin are recruited. Cas is required for cell spreading and focal adhesion assembly in epithelial and fibroblast cells on collagen and fibronectin. Cas cluster formation requires Cas, Crk/CrkL, SFKs, and Rac1 but not vinculin. Rac1 provides positive feedback onto Cas through reactive oxygen, opposed by negative feedback from the ubiquitin proteasome system. The results suggest a two-step model for focal adhesion assembly in which clusters of phospho-Cas, effectors and inactive integrin β1 grow through positive feedback prior to integrin activation and recruitment of core focal adhesion proteins.
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Affiliation(s)
- Saurav Kumar
- Fred Hutchinson Cancer CenterSeattleUnited States
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15
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Treuer AV, Faúndez M, Ebensperger R, Hovelmeyer E, Vergara-Jaque A, Perera-Sardiña Y, Gutierrez M, Fuentealba R, González DR. New NADPH Oxidase 2 Inhibitors Display Potent Activity against Oxidative Stress by Targeting p22 phox-p47 phox Interactions. Antioxidants (Basel) 2023; 12:1441. [PMID: 37507978 PMCID: PMC10376059 DOI: 10.3390/antiox12071441] [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: 05/10/2023] [Revised: 07/03/2023] [Accepted: 07/13/2023] [Indexed: 07/30/2023] Open
Abstract
NADPH oxidase (NOX2) is responsible for reactive oxygen species (ROS) production in neutrophils and has been recognized as a key mediator in inflammatory and cardiovascular pathologies. Nevertheless, there is a lack of specific NOX2 pharmacological inhibitors. In medicinal chemistry, heterocyclic compounds are essential scaffolds for drug design, and among them, indole is a very versatile pharmacophore. We tested the hypothesis that indole heteroaryl-acrylonitrile derivatives may serve as NOX2 inhibitors by evaluating the capacity of 19 of these molecules to inhibit NOX2-derived ROS production in human neutrophils (HL-60 cells). Of these compounds, C6 and C14 exhibited concentration-dependent inhibition of NOX2 (IC50~1 µM). These molecules also reduced NOX2-derived oxidative stress in cardiomyocytes and prevented cardiac damage induced by ischemia-reperfusion. Compound C6 significantly reduced the membrane translocation of p47phox, a cytosolic subunit that is required for NOX2 activation. Molecular docking analyses of the binding modes of these molecules with p47phox indicated that C6 and C14 interact with specific residues in the inner part of the groove of p47phox, the binding cavity for p22phox. This combination of methods showed that novel indole heteroaryl acrylonitriles represent interesting lead compounds for developing specific and potent NOX2 inhibitors.
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Affiliation(s)
- Adriana V Treuer
- Department of Basic Biomedical Sciences, School of Health Sciences, Universidad de Talca, Avenida Lircay s/n, Talca 3460000, Chile
| | - Mario Faúndez
- Departamento de Farmacia, Escuela de Química y Farmacia, Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Av. Vicuña Mackenna 4860, Santiago 7820436, Chile
| | - Roberto Ebensperger
- Escuela de Química y Farmacia, Facultad de Medicina y Ciencia, Universidad San Sebastián, Santiago 7510157, Chile
| | - Erwin Hovelmeyer
- Center for Bioinformatics, Simulation and Modeling, Faculty of Engineering, Universidad de Talca, Avenida Lircay s/n, Talca 3460000, Chile
| | - Ariela Vergara-Jaque
- Center for Bioinformatics, Simulation and Modeling, Faculty of Engineering, Universidad de Talca, Avenida Lircay s/n, Talca 3460000, Chile
| | - Yunier Perera-Sardiña
- Department of Basic Biomedical Sciences, School of Health Sciences, Universidad de Talca, Avenida Lircay s/n, Talca 3460000, Chile
| | - Margarita Gutierrez
- Organic Synthesis Laboratory and Biological Activity (LSO-Act-Bio), Institute of Chemistry of Natural Resources, Universidad de Talca, Talca 3460000, Chile
| | - Roberto Fuentealba
- Escuela de Enfermería, Facultad de Salud, Universidad Santo Tomás, Talca 3460000, Chile
| | - Daniel R González
- Department of Basic Biomedical Sciences, School of Health Sciences, Universidad de Talca, Avenida Lircay s/n, Talca 3460000, Chile
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16
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Wang Y, Liu XY, Wang Y, Zhao WX, Li FD, Guo PR, Fan Q, Wu XF. NOX2 inhibition stabilizes vulnerable plaques by enhancing macrophage efferocytosis via MertK/PI3K/AKT pathway. Redox Biol 2023; 64:102763. [PMID: 37354827 DOI: 10.1016/j.redox.2023.102763] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2023] [Revised: 05/21/2023] [Accepted: 05/24/2023] [Indexed: 06/26/2023] Open
Abstract
NADPH oxidases 2 (NOX2) is the main source of ROS in macrophages, which plays a critical role in the formation of atherosclerosis. However, effects of NOX2 inhibition on established vulnerable plaques and the potential role involved remain unclear. The purpose of this study is to investigate the latent mechanism of NOX2-triggered vulnerable plaque development. We generated a vulnerable carotid plaque model induced by carotid branch ligation and renal artery constriction, combined with a high-fat diet in ApoE-/- mice. NOX2 specific inhibitor, GSK2795039 (10 mg/kg/day by intragastric administration for 8 weeks) significantly prevented vulnerable plaque, evaluated by micro-ultrasound imaging parameters. A profile of less intraplaque hemorrhage detection, increased collagen-lipid ratio, fibrous cap thickness and less necrotic core formation were also found in GSK2795039 treated group. Mechanistically, reduced 4-HNE, in situ lesional apoptosis and enhanced efferocytosis were involved in mice treated with NOX2 inhibitor. Further analysis in mouse macrophages confirmed the role of NOX2 inhibition in enhancing macrophage efferocytosis by regulating the MertK/PI3K/AKT pathway. In summary, our data defined previously few recognized roles of NOX2 in vulnerable plaque pathogenesis and an undescribed NOX2-ROS-MerTK axis acts involved in regulating macrophage efferocytosis in the formation of rupture-prone vulnerable plaques.
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Affiliation(s)
- Yue Wang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xin-Yan Liu
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Yue Wang
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Wen-Xin Zhao
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Fa-Dong Li
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Peng-Rong Guo
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Qian Fan
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China
| | - Xiao-Fan Wu
- Department of Cardiology, Beijing Anzhen Hospital, Capital Medical University, Beijing, China.
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17
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Postiglione AE, Muday GK. Abscisic acid increases hydrogen peroxide in mitochondria to facilitate stomatal closure. PLANT PHYSIOLOGY 2023; 192:469-487. [PMID: 36573336 PMCID: PMC10152677 DOI: 10.1093/plphys/kiac601] [Citation(s) in RCA: 15] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 12/04/2022] [Indexed: 05/03/2023]
Abstract
Abscisic acid (ABA) drives stomatal closure to minimize water loss due to transpiration in response to drought. We examined the subcellular location of ABA-increased accumulation of reactive oxygen species (ROS) in guard cells, which drive stomatal closure, in Arabidopsis (Arabidopsis thaliana). ABA-dependent increases in fluorescence of the generic ROS sensor, dichlorofluorescein (DCF), were observed in mitochondria, chloroplasts, cytosol, and nuclei. The ABA response in all these locations was lost in an ABA-insensitive quintuple receptor mutant. The ABA-increased fluorescence in mitochondria of both DCF- and an H2O2-selective probe, Peroxy Orange 1, colocalized with Mitotracker Red. ABA treatment of guard cells transformed with the genetically encoded H2O2 reporter targeted to the cytoplasm (roGFP2-Orp1), or mitochondria (mt-roGFP2-Orp1), revealed H2O2 increases. Consistent with mitochondrial ROS changes functioning in stomatal closure, we found that guard cells of a mutant with mitochondrial defects, ABA overly sensitive 6 (abo6), have elevated ABA-induced ROS in mitochondria and enhanced stomatal closure. These effects were phenocopied with rotenone, which increased mitochondrial ROS. In contrast, the mitochondrially targeted antioxidant, MitoQ, dampened ABA effects on mitochondrial ROS accumulation and stomatal closure in Col-0 and reversed the guard cell closure phenotype of the abo6 mutant. ABA-induced ROS accumulation in guard cell mitochondria was lost in mutants in genes encoding respiratory burst oxidase homolog (RBOH) enzymes and reduced by treatment with the RBOH inhibitor, VAS2870, consistent with RBOH machinery acting in ABA-increased ROS in guard cell mitochondria. These results demonstrate that ABA elevates H2O2 accumulation in guard cell mitochondria to promote stomatal closure.
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Affiliation(s)
- Anthony E Postiglione
- Department of Biology and the Center for Molecular Signaling, Wake Forest University, Winston Salem, North Carolina, USA 27109
| | - Gloria K Muday
- Department of Biology and the Center for Molecular Signaling, Wake Forest University, Winston Salem, North Carolina, USA 27109
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18
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Smirnova OA, Ivanova ON, Mukhtarov F, Valuev-Elliston VT, Fedulov AP, Rubtsov PM, Zakirova NF, Kochetkov SN, Bartosch B, Ivanov AV. Hepatitis Delta Virus Antigens Trigger Oxidative Stress, Activate Antioxidant Nrf2/ARE Pathway, and Induce Unfolded Protein Response. Antioxidants (Basel) 2023; 12:antiox12040974. [PMID: 37107349 PMCID: PMC10136299 DOI: 10.3390/antiox12040974] [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: 04/06/2023] [Revised: 04/20/2023] [Accepted: 04/20/2023] [Indexed: 04/29/2023] Open
Abstract
Hepatitis delta virus (HDV) is a viroid-like satellite that may co-infect individuals together with hepatitis B virus (HBV), as well as cause superinfection by infecting patients with chronic hepatitis B (CHB). Being a defective virus, HDV requires HBV structural proteins for virion production. Although the virus encodes just two forms of its single antigen, it enhances the progression of liver disease to cirrhosis in CHB patients and increases the incidence of hepatocellular carcinoma. HDV pathogenesis so far has been attributed to virus-induced humoral and cellular immune responses, while other factors have been neglected. Here, we evaluated the impact of the virus on the redox status of hepatocytes, as oxidative stress is believed to contribute to the pathogenesis of various viruses, including HBV and hepatitis C virus (HCV). We show that the overexpression of large HDV antigen (L-HDAg) or autonomous replication of the viral genome in cells leads to increased production of reactive oxygen species (ROS). It also leads to the upregulated expression of NADPH oxidases 1 and 4, cytochrome P450 2E1, and ER oxidoreductin 1α, which have previously been shown to mediate oxidative stress induced by HCV. Both HDV antigens also activated the Nrf2/ARE pathway, which controls the expression of a spectrum of antioxidant enzymes. Finally, HDV and its large antigen also induced endoplasmic reticulum (ER) stress and the concomitant unfolded protein response (UPR). In conclusion, HDV may enhance oxidative and ER stress induced by HBV, thus aggravating HBV-associated pathologies, including inflammation, liver fibrosis, and the development of cirrhosis and hepatocellular carcinoma.
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Affiliation(s)
- Olga A Smirnova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Olga N Ivanova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Furkat Mukhtarov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | | | - Artemy P Fedulov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Petr M Rubtsov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Natalia F Zakirova
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Sergey N Kochetkov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
| | - Birke Bartosch
- Centre de Recherche en Cancérologie de Lyon, Université Claude Bernard Lyon 1, INSERM 1052, CNRS 5286, 69434 Lyon, France
| | - Alexander V Ivanov
- Engelhardt Institute of Molecular Biology, Russian Academy of Sciences, Moscow 119991, Russia
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19
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Germon ZP, Sillar JR, Mannan A, Duchatel RJ, Staudt D, Murray HC, Findlay IJ, Jackson ER, McEwen HP, Douglas AM, McLachlan T, Schjenken JE, Skerrett-Byrne DA, Huang H, Melo-Braga MN, Plank MW, Alvaro F, Chamberlain J, De Iuliis G, Aitken RJ, Nixon B, Wei AH, Enjeti AK, Huang Y, Lock RB, Larsen MR, Lee H, Vaghjiani V, Cain JE, de Bock CE, Verrills NM, Dun MD. Blockade of ROS production inhibits oncogenic signaling in acute myeloid leukemia and amplifies response to precision therapies. Sci Signal 2023; 16:eabp9586. [PMID: 36976863 DOI: 10.1126/scisignal.abp9586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/30/2023]
Abstract
Mutations in the type III receptor tyrosine kinase FLT3 are frequent in patients with acute myeloid leukemia (AML) and are associated with a poor prognosis. AML is characterized by the overproduction of reactive oxygen species (ROS), which can induce cysteine oxidation in redox-sensitive signaling proteins. Here, we sought to characterize the specific pathways affected by ROS in AML by assessing oncogenic signaling in primary AML samples. The oxidation or phosphorylation of signaling proteins that mediate growth and proliferation was increased in samples from patient subtypes with FLT3 mutations. These samples also showed increases in the oxidation of proteins in the ROS-producing Rac/NADPH oxidase-2 (NOX2) complex. Inhibition of NOX2 increased the apoptosis of FLT3-mutant AML cells in response to FLT3 inhibitors. NOX2 inhibition also reduced the phosphorylation and cysteine oxidation of FLT3 in patient-derived xenograft mouse models, suggesting that decreased oxidative stress reduces the oncogenic signaling of FLT3. In mice grafted with FLT3 mutant AML cells, treatment with a NOX2 inhibitor reduced the number of circulating cancer cells, and combining FLT3 and NOX2 inhibitors increased survival to a greater extent than either treatment alone. Together, these data raise the possibility that combining NOX2 and FLT3 inhibitors could improve the treatment of FLT3 mutant AML.
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Affiliation(s)
- Zacary P Germon
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Jonathan R Sillar
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Department of Haematology, Calvary Mater Hospital, Waratah, NSW, Australia
| | - Abdul Mannan
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Ryan J Duchatel
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Dilana Staudt
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Heather C Murray
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Izac J Findlay
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Evangeline R Jackson
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Holly P McEwen
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Alicia M Douglas
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Tabitha McLachlan
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - John E Schjenken
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW, Australia
| | - David A Skerrett-Byrne
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW, Australia
| | - Honggang Huang
- Department of Molecular Biology and Biochemistry, Protein Research Group, University of Southern Denmark, Odense, Denmark
| | - Marcella N Melo-Braga
- Department of Molecular Biology and Biochemistry, Protein Research Group, University of Southern Denmark, Odense, Denmark
- Departamento de Bioquímica e Imunologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, Belo Horizonte, Brazil
| | - Maximilian W Plank
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- GlaxoSmithKline, Abbotsford, Victoria, Australia
| | - Frank Alvaro
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- John Hunter Children's Hospital, New Lambton Heights, NSW, Australia
| | - Janis Chamberlain
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- John Hunter Children's Hospital, New Lambton Heights, NSW, Australia
| | - Geoff De Iuliis
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW, Australia
| | - R John Aitken
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW, Australia
| | - Brett Nixon
- Priority Research Centre for Reproductive Science, School of Environmental and Life Sciences, College of Engineering, Science and Environment, University of Newcastle, Callaghan, NSW, Australia
| | - Andrew H Wei
- Australian Centre for Blood Diseases, Monash University, Melbourne, VIC, Australia
| | - Anoop K Enjeti
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
- Department of Haematology, Calvary Mater Hospital, Waratah, NSW, Australia
- NSW Health Pathology, John Hunter Hospital, New Lambton Heights, NSW, Australia
| | - Yizhou Huang
- Children's Cancer Institute, Lowy Cancer Centre, School of Women's and Children's Health, University of New South Wales Centre for Childhood Cancer Research, UNSW Sydney, Kensington, NSW, Australia
| | - Richard B Lock
- Children's Cancer Institute, Lowy Cancer Centre, School of Women's and Children's Health, University of New South Wales Centre for Childhood Cancer Research, UNSW Sydney, Kensington, NSW, Australia
| | - Martin R Larsen
- Department of Molecular Biology and Biochemistry, Protein Research Group, University of Southern Denmark, Odense, Denmark
| | - Heather Lee
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Vijesh Vaghjiani
- Centre for Cancer Research, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC, Australia
| | - Jason E Cain
- Centre for Cancer Research, Hudson Institute of Medical Research, Clayton, VIC, Australia
- Department of Molecular and Translational Science, Monash University, Clayton, VIC, Australia
| | - Charles E de Bock
- Children's Cancer Institute, Lowy Cancer Centre, School of Women's and Children's Health, University of New South Wales Centre for Childhood Cancer Research, UNSW Sydney, Kensington, NSW, Australia
| | - Nicole M Verrills
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
| | - Matthew D Dun
- Cancer Signalling Research Group, School of Biomedical Sciences and Pharmacy, College of Health, Medicine and Wellbeing, University of Newcastle, Callaghan, NSW, Australia
- Precision Medicine Research Program, Hunter Medical Research Institute, New Lambton Heights, NSW, Australia
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20
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Chopra K, Folkmanaitė M, Stockdale L, Shathish V, Ishibashi S, Bergin R, Amich J, Amaya E. Duox is the primary NADPH oxidase responsible for ROS production during adult caudal fin regeneration in zebrafish. iScience 2023; 26:106147. [PMID: 36843843 PMCID: PMC9950526 DOI: 10.1016/j.isci.2023.106147] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Revised: 11/28/2022] [Accepted: 02/01/2023] [Indexed: 02/05/2023] Open
Abstract
Sustained elevated levels of reactive oxygen species (ROS) have been shown to be essential for regeneration in many organisms. This has been shown primarily via the use of pharmacological inhibitors targeting the family of NADPH oxidases (NOXes). To identify the specific NOXes involved in ROS production during adult caudal fin regeneration in zebrafish, we generated nox mutants for duox, nox5 and cyba (a key subunit of NOXes 1-4) and crossed these lines with a transgenic line ubiquitously expressing HyPer, which permits the measurement of ROS levels. Homozygous duox mutants had the greatest effect on ROS levels and rate of fin regeneration among the single mutants. However, duox:cyba double mutants showed a greater effect on fin regeneration than the single duox mutants, suggesting that Nox1-4 also play a role during regeneration. This work also serendipitously found that ROS levels in amputated adult zebrafish fins oscillate with a circadian rhythm.
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Affiliation(s)
- Kunal Chopra
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK
| | - Milda Folkmanaitė
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK
| | - Liam Stockdale
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK
| | - Vishali Shathish
- Manchester Fungal Infection Group (MFIG), Division of Evolution, Infection, and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK
| | - Shoko Ishibashi
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK
| | - Rachel Bergin
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK
| | - Jorge Amich
- Manchester Fungal Infection Group (MFIG), Division of Evolution, Infection, and Genomics, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK.,Mycology Reference Laboratory, National Centre for Microbiology, Instituto de Salud Carlos III (ISCIII), Majadahonda 28220 Madrid, Spain
| | - Enrique Amaya
- Division of Cell Matrix Biology & Regenerative Medicine, School of Biological Sciences, Faculty of Biology, Medicine and Health, University of Manchester, Manchester M13 9PT, UK
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21
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Structure, Activation, and Regulation of NOX2: At the Crossroad between the Innate Immunity and Oxidative Stress-Mediated Pathologies. Antioxidants (Basel) 2023; 12:antiox12020429. [PMID: 36829988 PMCID: PMC9952346 DOI: 10.3390/antiox12020429] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Revised: 02/04/2023] [Accepted: 02/06/2023] [Indexed: 02/12/2023] Open
Abstract
Nicotinamide adenine dinucleotide phosphate (NADPH) oxidase (NOX) is a multisubunit enzyme complex that participates in the generation of superoxide or hydrogen peroxide (H2O2) and plays a key role in several biological functions. Among seven known NOX isoforms, NOX2 was the first identified in phagocytes but is also expressed in several other cell types including endothelial cells, platelets, microglia, neurons, and muscle cells. NOX2 has been assigned multiple roles in regulating many aspects of innate and adaptive immunity, and human and mouse models of NOX2 genetic deletion highlighted this key role. On the other side, NOX2 hyperactivation is involved in the pathogenesis of several diseases with different etiologies but all are characterized by an increase in oxidative stress and inflammatory process. From this point of view, the modulation of NOX2 represents an important therapeutic strategy aimed at reducing the damage associated with its hyperactivation. Although pharmacological strategies to selectively modulate NOX2 are implemented thanks to new biotechnologies, this field of research remains to be explored. Therefore, in this review, we analyzed the role of NOX2 at the crossroads between immunity and pathologies mediated by its hyperactivation. We described (1) the mechanisms of activation and regulation, (2) human, mouse, and cellular models studied to understand the role of NOX2 as an enzyme of innate immunity, (3) some of the pathologies associated with its hyperactivation, and (4) the inhibitory strategies, with reference to the most recent discoveries.
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22
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Thannickal VJ, Jandeleit‐Dahm K, Szyndralewiez C, Török NJ. Pre-clinical evidence of a dual NADPH oxidase 1/4 inhibitor (setanaxib) in liver, kidney and lung fibrosis. J Cell Mol Med 2023; 27:471-481. [PMID: 36658776 PMCID: PMC9930438 DOI: 10.1111/jcmm.17649] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 11/21/2022] [Accepted: 11/26/2022] [Indexed: 01/21/2023] Open
Abstract
Fibrosis describes a dysregulated tissue remodelling response to persistent cellular injury and is the final pathological consequence of many chronic diseases that affect the liver, kidney and lung. Nicotinamide adenine dinucleotide phosphate (NADPH)-oxidase (NOX) enzymes produce reactive oxygen species (ROS) as their primary function. ROS derived from NOX1 and NOX4 are key mediators of liver, kidney and lung fibrosis. Setanaxib (GKT137831) is a first-in-class, dual inhibitor of NOX1/4 and is the first NOX inhibitor to progress to clinical trial investigation. The anti-fibrotic effects of setanaxib in liver, kidney and lung fibrosis are supported by multiple lines of pre-clinical evidence. However, despite advances in our understanding, the precise roles of NOX1/4 in fibrosis require further investigation. Additionally, there is a translational gap between the pre-clinical observations of setanaxib to date and the applicability of these to human patients within a clinical setting. This narrative review critically examines the role of NOX1/4 in liver, kidney and lung fibrosis, alongside the available evidence investigating setanaxib as a therapeutic agent in pre-clinical models of disease. We discuss the potential clinical translatability of this pre-clinical evidence, which provides rationale to explore NOX1/4 inhibition by setanaxib across various fibrotic pathologies in clinical trials involving human patients.
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Affiliation(s)
- Victor J. Thannickal
- John W. Deming Department of MedicineTulane University School of MedicineNew OrleansLouisianaUSA
- Southeast Louisiana Veterans Healthcare SystemNew OrleansLouisianaUSA
| | - Karin Jandeleit‐Dahm
- Department of Diabetes, Central Clinical SchoolMonash UniversityMelbourneVictoriaAustralia
| | - Cédric Szyndralewiez
- Calliditas Therapeutics Suisse SAGenevaSwitzerland
- Present address:
Pherecydes PharmaNantesFrance
| | - Natalie J. Török
- Division of Gastroenterology and Hepatology, Department of MedicineStanford UniversityStanfordCaliforniaUSA
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23
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Eaton L, Welch I, Halal AK, Bengtsson J, Pamenter ME. Apocynin reduces dihydroethidium fluorescence in naked mole-rat cortex independently of NADPH oxidase. Comp Biochem Physiol A Mol Integr Physiol 2023; 276:111342. [PMID: 36375753 DOI: 10.1016/j.cbpa.2022.111342] [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: 09/02/2022] [Revised: 11/03/2022] [Accepted: 11/07/2022] [Indexed: 11/13/2022]
Abstract
Pharmacological agents that modulate cellular targets offer a powerful approach to interrogate the role of a given component in cellular signalling cascades. However, such drugs are often nonspecific and/or have unexpected off-target effects. One cellular target of interest is the NADPH oxidase (NOX) enzyme family, which consume oxygen and produce reactive oxygen species. Among the most widely used inhibitors of NOX is apocynin, but apocynin also has off-target effects that may interfere with detection assays of hydrogen peroxide (H2O2) or directly scavenge H2O2 in some cell lines. Nonetheless, apocynin remains widely used for in vivo studies of brain function. Therefore, we used apocynin and another widely-used NOX inhibitor - diphenyleneiodonium (DPI) - to study the role of NOX in ROS homeostasis of hypoxia-tolerant naked mole-rat cortical brain slices during a normoxia➔hypoxia➔reoxygenation protocol. Using fluorescence microscopy, we found that apocynin decreased dihydroethidium fluorescence from naked mole-rat cortex in all treatment conditions by 65-75% of pre-drug normoxic control. This change was rapid, occurring within minutes of drug perfusion, and reversed equally rapidly upon washout. Conversely, apocynin had no effect on 5-(and-6)-chloromethyl-2',7'-dichlorodihydrofluorescein diacetate, acetyl ester (CM-H2DCFDA) fluorescence. DPI also had no effect on either fluorescence signal, suggesting that the effect of apocynin is due to indirect actions of the drug and not due to modulation of NOX. Taken together, our results highlight the pitfalls of pharmacological neuroscience and add to the body of evidence suggesting that apocynin is not a useful compound for targeting NOX.
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Affiliation(s)
- Liam Eaton
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Isabella Welch
- Department of Biology, University of Ottawa, Ottawa, ON, Canada. https://twitter.com/Isabellawel1998
| | | | - John Bengtsson
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Matthew E Pamenter
- Department of Biology, University of Ottawa, Ottawa, ON, Canada; University of Ottawa Brain and Mind Research Institute, Ottawa, ON, Canada.
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24
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Peng X, Rahim A, Peng W, Jiang F, Gu Z, Wen S. Recent Progress in Cyclic Aryliodonium Chemistry: Syntheses and Applications. Chem Rev 2023; 123:1364-1416. [PMID: 36649301 PMCID: PMC9951228 DOI: 10.1021/acs.chemrev.2c00591] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2022] [Indexed: 01/18/2023]
Abstract
Hypervalent aryliodoumiums are intensively investigated as arylating agents. They are excellent surrogates to aryl halides, and moreover they exhibit better reactivity, which allows the corresponding arylation reactions to be performed under mild conditions. In the past decades, acyclic aryliodoniums are widely explored as arylation agents. However, the unmet need for acyclic aryliodoniums is the improvement of their notoriously low reaction economy because the coproduced aryl iodides during the arylation are often wasted. Cyclic aryliodoniums have their intrinsic advantage in terms of reaction economy, and they have started to receive considerable attention due to their valuable synthetic applications to initiate cascade reactions, which can enable the construction of complex structures, including polycycles with potential pharmaceutical and functional properties. Here, we are summarizing the recent advances made in the research field of cyclic aryliodoniums, including the nascent design of aryliodonium species and their synthetic applications. First, the general preparation of typical diphenyl iodoniums is described, followed by the construction of heterocyclic iodoniums and monoaryl iodoniums. Then, the initiated arylations coupled with subsequent domino reactions are summarized to construct polycycles. Meanwhile, the advances in cyclic aryliodoniums for building biaryls including axial atropisomers are discussed in a systematic manner. Finally, a very recent advance of cyclic aryliodoniums employed as halogen-bonding organocatalysts is described.
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Affiliation(s)
- Xiaopeng Peng
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
- State
Key Laboratory of Oncology in South China, Collaborative Innovation
Center for Cancer Medicine, Sun Yat-sen
University Cancer Center, 651 Dongfeng East Road, Guangzhou510060, P. R. China
| | - Abdur Rahim
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei230026, P. R. China
| | - Weijie Peng
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
| | - Feng Jiang
- College
of Pharmacy, Key Laboratory of Prevention and Treatment of Cardiovascular
and Cerebrovascular Diseases, Ministry of Education, Jiangxi Province
Key Laboratory of Biomaterials and Biofabrication for Tissue Engineering, Gannan Medical University, Ganzhou341000, P.R. China
| | - Zhenhua Gu
- Department
of Chemistry, University of Science and
Technology of China, 96 Jinzhai Road, Hefei230026, P. R. China
| | - Shijun Wen
- State
Key Laboratory of Oncology in South China, Collaborative Innovation
Center for Cancer Medicine, Sun Yat-sen
University Cancer Center, 651 Dongfeng East Road, Guangzhou510060, P. R. China
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25
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Zang J, Cambet Y, Jaquet V, Bach A. Chemical synthesis of a reported p47phox/p22phox inhibitor and characterization of its instability and irreproducible activity. Front Pharmacol 2023; 13:1075328. [PMID: 36686674 PMCID: PMC9850094 DOI: 10.3389/fphar.2022.1075328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 12/19/2022] [Indexed: 01/07/2023] Open
Abstract
The nicotinamide adenine dinucleotide phosphate oxidase 2 (NOX2) multi-subunit complex is a highly abundant and central source of reactive oxygen species. NOX2 is a key enzyme of the innate immune system involved in antibacterial response, but excessive NOX2 activity is involved in oxidative stress and inflammation in many diseases. Inhibition of NOX2 has great potential as a therapeutic strategy. An intriguing pharmacological approach for inhibiting NOX2 is to target the p47phox subunit and thereby block the protein-protein interaction with p22phox, whereby assembling and activation of NOX2 is prevented. However, the shallow binding pocket of p47phox makes it difficult to develop drug-like p47phox/p22phox inhibitors. Recently, the small molecule LMH001 was reported to inhibit the p47phox/p22phox interaction, reduce endothelial NOX2 activity, and protect mice from angiotensin II-induced vascular oxidative stress. These noteworthy results could have significant impact on the field of NOX2 pharmacology, as specific and efficient inhibitors are scarce. Here, we synthesized and tested LMH001 to have it available as a positive control. We established a robust synthetic route for providing LMH001, but subsequently we experienced that LMH001 is chemically unstable in aqueous buffer. In addition, neither LMH001 nor its breakdown products were able to inhibit the p47phox/p22phox interaction in a non-cellular fluorescence polarization assay. However, LHM001 was a weak inhibitor of NOX2 in a functional cell assay, but with same low potency as one of its breakdown products. These findings question the activity and suggested mechanism of LMH001 and constitute important information for other researchers interested in chemical probes for studying NOX2 biology.
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Affiliation(s)
- Jie Zang
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Yves Cambet
- READS Unit, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland
| | - Vincent Jaquet
- READS Unit, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland,Department of Pathology and Immunology, Centre Médical Universitaire, University of Geneva, Geneva, Switzerland
| | - Anders Bach
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark,*Correspondence: Anders Bach,
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26
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Diaz JM, Shi X. NOX-like ROS production by glutathione reductase. iScience 2022; 25:105093. [PMID: 36185373 PMCID: PMC9519596 DOI: 10.1016/j.isci.2022.105093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Revised: 07/20/2022] [Accepted: 09/02/2022] [Indexed: 12/05/2022] Open
Abstract
In organisms from bacteria to mammals, NADPH oxidase (NOX) catalyzes the production of beneficial reactive oxygen species (ROS) such as superoxide (O2−). However, our previous research implicated glutathione reductase (GR), a canonical antioxidant enzyme, as a source of extracellular superoxide in the marine diatom Thalassiosira oceanica. Here, we expressed and characterized the two GR isoforms of T. oceanica. Both coupled the oxidation of NADPH, the native electron donor, to oxygen reduction, giving rise to superoxide in the absence of glutathione disulfide, the native electron acceptor. Superoxide production by ToGR1 exhibited similar kinetics as representative NOX enzymes, and inhibition assays agreed with prior organismal studies, supporting a physiological role. ToGR is similar to GR from human, yeast, and bacteria, suggesting that NOX-like ROS production by GR could be widespread. Yet unlike NOX, GR-mediated ROS production is independent of iron, which may provide an advantageous way of making ROS under micronutrient stress. Glutathione reductase expressed from a microbial phototroph is found to produce ROS This promiscuous reaction shows similar kinetics and inhibition as NOX-derived ROS The GR pathway of ROS production has cellular benefits under physiological stress GR may function similarly to NOX in other taxa, providing metabolic versatility
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Paloschi MV, Boeno CN, Lopes JA, Rego CMA, Silva MDS, Santana HM, Serrath SN, Ikenohuchi YJ, Farias BJC, Felipin KP, Nery NM, Dos Reis VP, de Lima Lemos CT, Evangelista JR, da Silva Setúbal S, Soares AM, Zuliani JP. Reactive oxygen species-dependent-NLRP3 inflammasome activation in human neutrophils induced by l-amino acid oxidase derived from Calloselasma rhodostoma venom. Life Sci 2022; 308:120962. [PMID: 36113732 DOI: 10.1016/j.lfs.2022.120962] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2022] [Revised: 08/31/2022] [Accepted: 09/10/2022] [Indexed: 11/20/2022]
Abstract
l-Amino acid oxidase isolated from Calloselasma rhodostoma (Cr-LAAO) snake venom is a potent stimulus for neutrophil activation and production of inflammatory mediators, contributing to local inflammatory effects in victims of envenoming. Cr-LAAO triggered the activation of nicotinamide adenine dinucleotide phosphatase (NADPH) oxidase complex and protein kinase C (PKC)-α signaling protein for reactive oxygen species (ROS) production. This study aims to evaluate the ROS participation in the NLRP3 inflammasome complex activation in human neutrophil. Human neutrophils were isolated and stimulated for 1 or 2 h with RPMI (negative control), LPS (1 μg/mL, positive control) or Cr-LAAO (50 μg/mL). The neutrophil transcriptome was examined using the microarray technique, and RT-qPCR for confirmation of gene expression. Immunofluorescence assays for NLRP3, caspase-1, IL-1β and GSDMD proteins was performed by Western blot in the presence and/or absence of Apocynin, an inhibitor of NADPH oxidase. IL-1β release was also detected in the presence and/or absence of NLRP3, caspase-1 and NADPH oxidase inhibitors. Results showed that Cr-LAAO upregulated the expression of genes that participate in the NADPH oxidase complex formation and inflammasome assembly. NLRP3 was activated and accumulated in the cytosol forming punctas, indicating its activation. Gasdermin D was not cleaved but lactate dehydrogenase was released. Furthermore, ROS inhibition decreased the expression of NLRP3 inflammasome complex proteins, as observed by protein expression in the presence and/or absence of apocynin, an NADPH oxidase inhibitor. IL-1β was also released, and pharmacological inhibition of NLRP3, caspase-1, and ROS reduced the amount of released cytokine. This is the first report demonstrating the activation of the NLRP3 inflammasome complex via ROS generation by Cr-LAAO, which may lead to the development of local inflammatory effects observed in snakebite victims.
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Affiliation(s)
- Mauro Valentino Paloschi
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Charles Nunes Boeno
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Jéssica Amaral Lopes
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Cristina Matiele Alves Rego
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Milena Daniela Souza Silva
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Hallison Mota Santana
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Suzanne Nery Serrath
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Yoda Janaina Ikenohuchi
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Braz Junior Campos Farias
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Kátia Paula Felipin
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Neriane Monteiro Nery
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Valdison Pereira Dos Reis
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Caleb Torres de Lima Lemos
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Jaina Rodrigues Evangelista
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Sulamita da Silva Setúbal
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil
| | - Andreimar Martins Soares
- Centro de Estudos de Biomoléculas Aplicadas à Saúde (CEBio), Fundação Oswaldo Cruz, FIOCRUZ Rondônia e Departamento de Medicina, Universidade Federal de Rondônia, UNIR, Porto Velho, RO, Brazil
| | - Juliana Pavan Zuliani
- Laboratório de Imunologia Celular Aplicada à Saúde, Fundação Oswaldo Cruz, FIOCRUZ Rondônia, Porto Velho, RO, Brazil; Centro de Estudos de Biomoléculas Aplicadas à Saúde (CEBio), Fundação Oswaldo Cruz, FIOCRUZ Rondônia e Departamento de Medicina, Universidade Federal de Rondônia, UNIR, Porto Velho, RO, Brazil.
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Tanase DM, Valasciuc E, Gosav EM, Floria M, Costea CF, Dima N, Tudorancea I, Maranduca MA, Serban IL. Contribution of Oxidative Stress (OS) in Calcific Aortic Valve Disease (CAVD): From Pathophysiology to Therapeutic Targets. Cells 2022; 11:cells11172663. [PMID: 36078071 PMCID: PMC9454630 DOI: 10.3390/cells11172663] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2022] [Revised: 08/23/2022] [Accepted: 08/24/2022] [Indexed: 11/16/2022] Open
Abstract
Calcific aortic valve disease (CAVD) is a major cause of cardiovascular mortality and morbidity, with increased prevalence and incidence. The underlying mechanisms behind CAVD are complex, and are mainly illustrated by inflammation, mechanical stress (which induces prolonged aortic valve endothelial dysfunction), increased oxidative stress (OS) (which trigger fibrosis), and calcification of valve leaflets. To date, besides aortic valve replacement, there are no specific pharmacological treatments for CAVD. In this review, we describe the mechanisms behind aortic valvular disease, the involvement of OS as a fundamental element in disease progression with predilection in AS, and its two most frequent etiologies (calcific aortic valve disease and bicuspid aortic valve); moreover, we highlight the potential of OS as a future therapeutic target.
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Affiliation(s)
- Daniela Maria Tanase
- Department of Internal Medicine, Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
- Internal Medicine Clinic, St. Spiridon County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
| | - Emilia Valasciuc
- Department of Internal Medicine, Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
- Internal Medicine Clinic, St. Spiridon County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
| | - Evelina Maria Gosav
- Department of Internal Medicine, Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
- Internal Medicine Clinic, St. Spiridon County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
| | - Mariana Floria
- Department of Internal Medicine, Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
- Internal Medicine Clinic, St. Spiridon County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
- Correspondence:
| | - Claudia Florida Costea
- Department of Ophthalmology, Faculty of Medicine, Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
- 2nd Ophthalmology Clinic, Prof. Dr. Nicolae Oblu Emergency Clinical Hospital, 700309 Iasi, Romania
| | - Nicoleta Dima
- Department of Internal Medicine, Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
- Internal Medicine Clinic, St. Spiridon County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
| | - Ionut Tudorancea
- Department of Morpho-Functional Sciences II, Discipline of Physiology, Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
- Cardiology Clinic St. Spiridon County Clinical Emergency Hospital, 700111 Iasi, Romania
| | - Minela Aida Maranduca
- Internal Medicine Clinic, St. Spiridon County Clinical Emergency Hospital Iasi, 700111 Iasi, Romania
- Department of Morpho-Functional Sciences II, Discipline of Physiology, Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
| | - Ionela Lacramioara Serban
- Department of Morpho-Functional Sciences II, Discipline of Physiology, Grigore T. Popa University of Medicine and Pharmacy, 700115 Iasi, Romania
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ROS Signaling Mediates Directional Cell Elongation and Somatic Cell Fusion in the Red Alga Griffithsia monilis. Cells 2022; 11:cells11132124. [PMID: 35805208 PMCID: PMC9266221 DOI: 10.3390/cells11132124] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/29/2022] [Accepted: 07/02/2022] [Indexed: 11/17/2022] Open
Abstract
In many filamentous red algae, cells that die from physical damage are replaced through somatic fusion of repair cells formed from adjacent cells. We visualized ROS generation in repair cells of Giriffthsia monilis using DCFH-DA staining and examined the expression of the genes involved in wound healing using quantitative PCR. Repair cells elongate along the H2O2 gradient, meet at each other’s tips where the H2O2 concentration is highest, and undergo somatic fusion. No wound response occurred with ascorbic acid treatment. Conversely, H2O2 treatment induced many repair cells, leading to multiple somatic cell fusions. Diphenylene iodonium (DPI) or caffeine treatment reversibly inhibited ROS production in repair cells and blocked the progression of the wound response suggesting that ROS and calcium signaling are involved in the process. Four G. monilis homologues of NADPH-oxidase (GmRBOHs) were identified. The expression of GmRBOHs was upregulated upon injury, peaking 1 h post injury, and decreasing to initial levels when repair cells began to elongate. Our results suggest that ROS generated upon cell injury activates Ca2+ channels and upregulates the expression of GmRBOHs, and that H2O2 generated from repair cells mediates induced repair cell elongation leading to somatic cell fusion and filament repair.
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30
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Ogboo BC, Grabovyy UV, Maini A, Scouten S, van der Vliet A, Mattevi A, Heppner DE. Architecture of the NADPH oxidase family of enzymes. Redox Biol 2022; 52:102298. [PMID: 35334249 PMCID: PMC8956913 DOI: 10.1016/j.redox.2022.102298] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 03/16/2022] [Accepted: 03/16/2022] [Indexed: 12/11/2022] Open
Abstract
The NADPH Oxidases (NOX) catalyze the deliberate production of reactive oxygen species (ROS) and are established regulators of redox-dependent processes across diverse biological settings. Proper management of their activity is controlled through a conserved electron transfer (ET) cascade from cytosolic NADPH substrate through the plasma membrane to extracellular O2. After decades-long investigations of their biological functions, including potential as drug targets, only very recently has atomic-resolution information of NOX enzymes been made available. In this graphical review, we summarize the present structural biology understanding of the NOX enzymes afforded by X-ray crystallography and cryo-electron microscopy. Combined molecular-level insights predominantly informed by DUOX1 full-length Cryo-EM structures suggest a general structural basis for the control of their catalytic activity by intracellular domain-domain stabilization.
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Affiliation(s)
- Blessing C Ogboo
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Uriy V Grabovyy
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Aniket Maini
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Scott Scouten
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, USA
| | - Albert van der Vliet
- Department of Pathology and Laboratory Medicine, Robert Larner, M.D. College of Medicine, University of Vermont, Burlington, VT, USA
| | - Andrea Mattevi
- Department of Genetics and Microbiology, University of Pavia, Italy
| | - David E Heppner
- Department of Chemistry, University at Buffalo, The State University of New York, Buffalo, NY, USA; Department of Pharmacology and Therapeutics, Roswell Park Comprehensive Cancer Center, Buffalo, NY, USA.
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31
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Begum R, Thota S, Abdulkadir A, Kaur G, Bagam P, Batra S. NADPH oxidase family proteins: signaling dynamics to disease management. Cell Mol Immunol 2022; 19:660-686. [PMID: 35585127 DOI: 10.1038/s41423-022-00858-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2021] [Accepted: 03/12/2022] [Indexed: 12/16/2022] Open
Abstract
Reactive oxygen species (ROS) are pervasive signaling molecules in biological systems. In humans, a lack of ROS causes chronic and extreme bacterial infections, while uncontrolled release of these factors causes pathologies due to excessive inflammation. Professional phagocytes such as neutrophils (PMNs), eosinophils, monocytes, and macrophages use superoxide-generating NADPH oxidase (NOX) as part of their arsenal of antimicrobial mechanisms to produce high levels of ROS. NOX is a multisubunit enzyme complex composed of five essential subunits, two of which are localized in the membrane, while three are localized in the cytosol. In resting phagocytes, the oxidase complex is unassembled and inactive; however, it becomes activated after cytosolic components translocate to the membrane and are assembled into a functional oxidase. The NOX isoforms play a variety of roles in cellular differentiation, development, proliferation, apoptosis, cytoskeletal control, migration, and contraction. Recent studies have identified NOX as a major contributor to disease pathologies, resulting in a shift in focus on inhibiting the formation of potentially harmful free radicals. Therefore, a better understanding of the molecular mechanisms and the transduction pathways involved in NOX-mediated signaling is essential for the development of new therapeutic agents that minimize the hyperproduction of ROS. The current review provides a thorough overview of the various NOX enzymes and their roles in disease pathophysiology, highlights pharmacological strategies, and discusses the importance of computational modeling for future NOX-related studies.
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Affiliation(s)
- Rizwana Begum
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Shilpa Thota
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Abubakar Abdulkadir
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, Southern University and A&M College, Baton Rouge, LA, 70813, USA
| | - Gagandeep Kaur
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, Southern University and A&M College, Baton Rouge, LA, 70813, USA.,Department of Environmental Medicine, University of Rochester, School of Medicine and Dentistry, Rochester, NY, 14642, USA
| | - Prathyusha Bagam
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, Southern University and A&M College, Baton Rouge, LA, 70813, USA.,Division of Systems Biology, National Center for Toxicological Research, Jefferson, AR, 72079, USA
| | - Sanjay Batra
- Laboratory of Pulmonary Immunotoxicology, Department of Environmental Toxicology, Southern University and A&M College, Baton Rouge, LA, 70813, USA.
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32
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Nath A, Chakrabarti P, Sen S, Barui A. Reactive Oxygen Species in Modulating Intestinal Stem Cell Dynamics and Function. Stem Cell Rev Rep 2022; 18:2328-2350. [DOI: 10.1007/s12015-022-10377-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/13/2022] [Indexed: 10/18/2022]
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33
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Wang F, Liang Q, Ma Y, Sun M, Li T, Lin L, Sun Z, Duan J. Silica nanoparticles induce pyroptosis and cardiac hypertrophy via ROS/NLRP3/Caspase-1 pathway. Free Radic Biol Med 2022; 182:171-181. [PMID: 35219847 DOI: 10.1016/j.freeradbiomed.2022.02.027] [Citation(s) in RCA: 36] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2022] [Revised: 02/21/2022] [Accepted: 02/22/2022] [Indexed: 12/11/2022]
Abstract
Growing literatures suggest that silica nanoparticles (SiNPs) exposure is correlated with adverse cardiovascular effects. Cardiac hypertrophy is one of the most common risk factors for heart failure. However, whether SiNPs involved in cardiac hypertrophy and the underlying mechanisms was remained unexploited. Our study aimed to investigate the molecular mechanisms of SiNPs on pyroptosis and cardiac hypertrophy. The in vivo results found that SiNPs induced ultrastructural change and histopathological damage, accompanied by oxidative damage occurred and increased levels of inflammatory factors (IL-18 and IL-1β) in heart tissue. In addition, SiNPs could upregulate the expressions of cardiac hypertrophy-related special marker including ANP, BNP, β-MHC, it also elevated the pyroptosis-related protein, such as NLRP3, Cleaved-Caspase-1, GSDMD, IL-18 and Cleaved-IL-1β in vivo. For in vitro study, SiNPs increased the intracellular ROS generation and activated the NLRP3/Caspase-1/GSDMD signaling pathway in cardiomyocytes. Whereas, the NADPH oxidase (NOX) inhibitor VAS2870 had effectively inhibited the ROS level and suppressed the expression of NLRP3, ASC, Pro-Caspase-1, Cleaved-Caspase-1, N-GSDMD, IL-18, Cleaved-IL-1β, ANP, BNP and β-MHC. Moreover, transfected with si-NLRP3 or adopted with Caspase-1 inhibitor VX-765 in cardiomyocytes showed an inhibitory effect on SiNPs-induced pyroptosis and cardiac hypertrophy. In summary, our results demonstrated that SiNPs could trigger pyroptosis and cardiac hypertrophy via ROS/NLRP3/Caspase-1 signaling pathway.
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Affiliation(s)
- Fenghong Wang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China; Sinopharm North Hospital, Baotou, 014040, PR China
| | - Qingqing Liang
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Yuexiao Ma
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Mengqi Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Tianyu Li
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Lisen Lin
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China
| | - Zhiwei Sun
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China.
| | - Junchao Duan
- Department of Toxicology and Sanitary Chemistry, School of Public Health, Capital Medical University, Beijing, 100069, PR China; Beijing Key Laboratory of Environmental Toxicology, Capital Medical University, Beijing, 100069, PR China.
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34
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Shim E, Lee JW, Park H, Zuccarello GC, Kim GH. Hydrogen peroxide signalling mediates fertilization and post-fertilization development in the red alga Bostrychia moritziana. JOURNAL OF EXPERIMENTAL BOTANY 2022; 73:727-741. [PMID: 34652437 DOI: 10.1093/jxb/erab453] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Accepted: 10/14/2021] [Indexed: 06/13/2023]
Abstract
Reactive oxygen species (ROS) signalling has a multitude of roles in cellular processes throughout biology. We hypothesized that red algal fertilization may offer an interesting model to study ROS-mediated signalling, as the stages of fertilization are complex and unique. We detected the localization of ROS production microscopically and monitored the expression of three homologues of NADPH oxidase in reproductive cells during fertilization. ROS were instantaneously produced by spermatia (sperm) when they attached to female trichogynes, diffused across the cell membrane in the form of H2O2, and triggered ROS generation in the carpogonium (egg) as well as carpogonial branch cells which are not in direct contact with spermatia. The expression of NADPH oxidase homologues, RESPIRATORY BURST OXIDASE HOMOLOGUES (BmRBOHs), began to be up-regulated in the female plant upon gamete binding, peaking during the fertilization process and descending back to their original level after fertilization. Pre-treatment with diphenylene iodonium or caffeine blocked gene expression as well as H2O2 production. Post-fertilization development was also inhibited when the redox state of the plants was perturbed with H2O2 at any time before or after the fertilization. Our results suggest that H2O2 acts as an auto-propagating signalling molecule, possibly through Ca2+ channel activation, and regulates gene expression in fertilization as well as post-fertilization development in red algae.
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Affiliation(s)
- Eunyoung Shim
- Department of Biological Sciences, Kongju National University, Gongju 32588, Korea
| | - Ji Woong Lee
- Department of Biological Sciences, Kongju National University, Gongju 32588, Korea
| | - Hana Park
- Department of Biological Sciences, Kongju National University, Gongju 32588, Korea
| | - Giuseppe C Zuccarello
- School of Biological Sciences, Victoria University of Wellington, P.O. Box 600, Wellington 6140, New Zealand
| | - Gwang Hoon Kim
- Department of Biological Sciences, Kongju National University, Gongju 32588, Korea
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35
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Animal study of a newly designed metal airway brachytherapy stent loaded with radioactive 125I seeds. J Cancer Res Clin Oncol 2022; 148:3061-3069. [PMID: 34978618 DOI: 10.1007/s00432-021-03904-z] [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: 11/10/2021] [Accepted: 12/24/2021] [Indexed: 10/19/2022]
Abstract
AIM To evaluate dynamic tissue changes after airway stenting (AS) with a newly designed metal brachytherapy stent (BS) loaded with radioactive 125I seeds in normal rabbits. METHODS Forty-five normal New Zealand white rabbits were divided into 3 groups (group A: stent without seeds; group B: stent with 0.4 mCi active seeds; group C: stent with 0.8 mCi active seeds) and underwent AS under C-arm guidance. Then, five rabbits were killed from each group at 2, 4, and 8 weeks for further examination. Laboratory tests (including routine blood tests, liver function, kidney function, and electrolytes), gross observations, and tissue changes of Masson/hematoxylin-eosin staining, plus immunohistochemistry of α-SMA, NOX4, and TGF-β were performed at each time point. RESULTS All animals underwent AS successfully without procedure-related death, but one animal died at 6 weeks due to severe pulmonary infection in group C. Apart from a transient increase in white blood cells (P < 0.05) and a gradual increase in ROS levels (P < 0.05), other blood test items showed no significant changes (P > 0.05). The brachytherapy injury score increased with irradiation dose accumulation (P < 0.05), but tissue hyperplasia at the stent end in group C was less severe than that in groups A and B (P < 0.05). Airway lateral fibrosis was observed in all groups by histopathologic analysis; however, fibrosis in group C was more severe than that in groups A and B (P < 0.05). CONCLUSION The brachytherapy injury score increased with irradiation dose accumulation, while granulation tissue hyperplasia at the stent end was inhibited by 125I brachytherapy within 8 weeks.
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36
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Krauss PL, Pfeiffenberger M, Damerau A, Buttgereit T, Chen Y, Gaber T, Buttgereit F. Production of IL-6 and Phagocytosis Are the Most Resilient Immune Functions in Metabolically Compromised Human Monocytes. Front Immunol 2021; 12:730672. [PMID: 34737742 PMCID: PMC8562108 DOI: 10.3389/fimmu.2021.730672] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Accepted: 10/01/2021] [Indexed: 01/23/2023] Open
Abstract
At sites of inflammation, monocytes carry out specific immune functions while facing challenging metabolic restrictions. Here, we investigated the potential of human monocytes to adapt to conditions of gradually inhibited oxidative phosphorylation (OXPHOS) under glucose free conditions. We used myxothiazol, an inhibitor of mitochondrial respiration, to adjust two different levels of decreased mitochondrial ATP production. At these levels, and compared to uninhibited OXPHOS, we assessed phagocytosis, production of reactive oxygen species (ROS) through NADPH oxidase (NOX), expression of surface activation markers CD16, CD80, CD11b, HLA-DR, and production of the inflammatory cytokines IL-1β, IL-6 and TNF-α in human monocytes. We found phagocytosis and the production of IL-6 to be least sensitive to metabolic restrictions while surface expression of CD11b, HLA-DR, production of TNF-α, IL-1β and production of ROS through NOX were most compromised by inhibition of OXPHOS in the absence of glucose. Our data demonstrate a short-term hierarchy of immune functions in human monocytes, which represents novel knowledge potentially leading to the development of new therapeutics in monocyte-mediated inflammatory diseases.
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Affiliation(s)
- Pierre-Louis Krauss
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Rheumatism Research Centre (DRFZ) Berlin, a Leibniz Institute, Berlin, Germany
| | - Moritz Pfeiffenberger
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Rheumatism Research Centre (DRFZ) Berlin, a Leibniz Institute, Berlin, Germany
| | - Alexandra Damerau
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Rheumatism Research Centre (DRFZ) Berlin, a Leibniz Institute, Berlin, Germany
| | - Thomas Buttgereit
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,Department of Dermatology, Venerology, and Allergology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany
| | - Yuling Chen
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Rheumatism Research Centre (DRFZ) Berlin, a Leibniz Institute, Berlin, Germany
| | - Timo Gaber
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Rheumatism Research Centre (DRFZ) Berlin, a Leibniz Institute, Berlin, Germany
| | - Frank Buttgereit
- Department of Rheumatology and Clinical Immunology, Charité - Universitätsmedizin Berlin, corporate member of Freie Universität Berlin and Humboldt-Universität zu Berlin, Berlin, Germany.,German Rheumatism Research Centre (DRFZ) Berlin, a Leibniz Institute, Berlin, Germany
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37
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Reactive Oxygen Species in Acute Lymphoblastic Leukaemia: Reducing Radicals to Refine Responses. Antioxidants (Basel) 2021; 10:antiox10101616. [PMID: 34679751 PMCID: PMC8533157 DOI: 10.3390/antiox10101616] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/07/2021] [Accepted: 10/09/2021] [Indexed: 12/27/2022] Open
Abstract
Acute lymphoblastic leukaemia (ALL) is the most common cancer diagnosed in children and adolescents. Approximately 70% of patients survive >5-years following diagnosis, however, for those that fail upfront therapies, survival is poor. Reactive oxygen species (ROS) are elevated in a range of cancers and are emerging as significant contributors to the leukaemogenesis of ALL. ROS modulate the function of signalling proteins through oxidation of cysteine residues, as well as promote genomic instability by damaging DNA, to promote chemotherapy resistance. Current therapeutic approaches exploit the pro-oxidant intracellular environment of malignant B and T lymphoblasts to cause irreversible DNA damage and cell death, however these strategies impact normal haematopoiesis and lead to long lasting side-effects. Therapies suppressing ROS production, especially those targeting ROS producing enzymes such as the NADPH oxidases (NOXs), are emerging alternatives to treat cancers and may be exploited to improve the ALL treatment. Here, we discuss the roles that ROS play in normal haematopoiesis and in ALL. We explore the molecular mechanisms underpinning overproduction of ROS in ALL, and their roles in disease progression and drug resistance. Finally, we examine strategies to target ROS production, with a specific focus on the NOX enzymes, to improve the treatment of ALL.
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38
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Herb M, Gluschko A, Schramm M. Reactive Oxygen Species: Not Omnipresent but Important in Many Locations. Front Cell Dev Biol 2021; 9:716406. [PMID: 34557488 PMCID: PMC8452931 DOI: 10.3389/fcell.2021.716406] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Accepted: 08/19/2021] [Indexed: 01/08/2023] Open
Abstract
Reactive oxygen species (ROS), such as the superoxide anion or hydrogen peroxide, have been established over decades of research as, on the one hand, important and versatile molecules involved in a plethora of homeostatic processes and, on the other hand, as inducers of damage, pathologies and diseases. Which effects ROS induce, strongly depends on the cell type and the source, amount, duration and location of ROS production. Similar to cellular pH and calcium levels, which are both strictly regulated and only altered by the cell when necessary, the redox balance of the cell is also tightly regulated, not only on the level of the whole cell but in every cellular compartment. However, a still widespread view present in the scientific community is that the location of ROS production is of no major importance and that ROS randomly diffuse from their cellular source of production throughout the whole cell and hit their redox-sensitive targets when passing by. Yet, evidence is growing that cells regulate ROS production and therefore their redox balance by strictly controlling ROS source activation as well as localization, amount and duration of ROS production. Hopefully, future studies in the field of redox biology will consider these factors and analyze cellular ROS more specifically in order to revise the view of ROS as freely flowing through the cell.
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Affiliation(s)
- Marc Herb
- Institute for Medical Microbiology, Immunology and Hygiene, Cologne, Germany
| | - Alexander Gluschko
- Institute for Medical Microbiology, Immunology and Hygiene, Cologne, Germany
| | - Michael Schramm
- Institute for Medical Microbiology, Immunology and Hygiene, Cologne, Germany
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39
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Mortimer PM, Mc Intyre SA, Thomas DC. Beyond the Extra Respiration of Phagocytosis: NADPH Oxidase 2 in Adaptive Immunity and Inflammation. Front Immunol 2021; 12:733918. [PMID: 34539670 PMCID: PMC8440999 DOI: 10.3389/fimmu.2021.733918] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2021] [Accepted: 08/16/2021] [Indexed: 12/15/2022] Open
Abstract
Reactive oxygen species (ROS) derived from the phagocyte NADPH oxidase (NOX2) are essential for host defence and immunoregulation. Their levels must be tightly controlled. ROS are required to prevent infection and are used in signalling to regulate several processes that are essential for normal immunity. A lack of ROS then leads to immunodeficiency and autoinflammation. However, excess ROS are also deleterious, damaging tissues by causing oxidative stress. In this review, we focus on two particular aspects of ROS biology: (i) the emerging understanding that NOX2-derived ROS play a pivotal role in the development and maintenance of adaptive immunity and (ii) the effects of excess ROS in systemic disease and how limiting ROS might represent a therapeutic avenue in limiting excess inflammation.
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Affiliation(s)
- Paige M Mortimer
- Centre for Inflammatory Disease, Department of Immunology & Inflammation, Imperial College, London, United Kingdom
| | - Stacey A Mc Intyre
- Centre for Inflammatory Disease, Department of Immunology & Inflammation, Imperial College, London, United Kingdom
| | - David C Thomas
- Centre for Inflammatory Disease, Department of Immunology & Inflammation, Imperial College, London, United Kingdom
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40
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Correia SS, Liu G, Jacobson S, Bernier SG, Tobin JV, Schwartzkopf CD, Atwater E, Lonie E, Rivers S, Carvalho A, Germano P, Tang K, Iyengar RR, Currie MG, Hadcock JR, Winrow CJ, Jones JE. The CNS-penetrant soluble guanylate cyclase stimulator CYR119 attenuates markers of inflammation in the central nervous system. J Neuroinflammation 2021; 18:213. [PMID: 34537066 PMCID: PMC8449877 DOI: 10.1186/s12974-021-02275-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2021] [Accepted: 09/08/2021] [Indexed: 01/05/2023] Open
Abstract
Background Inflammation in the central nervous system (CNS) is observed in many neurological disorders. Nitric oxide-soluble guanylate cyclase-cyclic guanosine monophosphate (NO–sGC–cGMP) signaling plays an essential role in modulating neuroinflammation. CYR119 is a CNS-penetrant sGC stimulator that amplifies endogenous NO–sGC–cGMP signaling. We evaluated target engagement and the effects of CYR119 on markers of neuroinflammation in vitro in mouse microglial cells and in vivo in quinolinic acid (QA)-induced and high-fat diet-induced rodent neuroinflammation models.
Methods Target engagement was verified in human embryonic kidney (HEK) cells, rat primary neurons, mouse SIM-A9 cells, and in rats by measuring changes in cGMP and downstream targets of sGC signaling [phosphorylated vasodilator-stimulated phosphoprotein (pVASP), phosphorylated cAMP-response element binding (pCREB)]. In SIM-A9 cells stimulated with lipopolysaccharides (LPS), markers of inflammation were measured when cells were treated with or without CYR119. In rats, microinjections of QA and vehicle were administered into the right and left hemispheres of striatum, respectively, and then rats were dosed daily with either CYR119 (10 mg/kg) or vehicle for 7 days. The activation of microglia [ionized calcium binding adaptor molecule 1 (Iba1)] and astrocytes [glial fibrillary acidic protein (GFAP)] was measured by immunohistochemistry. Diet-induced obese (DIO) mice were treated daily with CYR119 (10 mg/kg) for 6 weeks, after which inflammatory genetic markers were analyzed in the prefrontal cortex. Results In vitro, CYR119 synergized with exogenous NO to increase the production of cGMP in HEK cells and in primary rat neuronal cell cultures. In primary neurons, CYR119 stimulated sGC, resulting in accumulation of cGMP and phosphorylation of CREB, likely through the activation of protein kinase G (PKG). CYR119 attenuated LPS-induced elevation of interleukin 6 (IL-6) and tumor necrosis factor (TNF) in mouse microglial cells. Following oral dosing in rats, CYR119 crossed the blood–brain barrier (BBB) and stimulated an increase in cGMP levels in the cerebral spinal fluid (CSF). In addition, levels of proinflammatory markers associated with QA administration or high-fat diet feeding were lower in rodents treated with CYR119 than in those treated with vehicle. Conclusions These data suggest that sGC stimulation could provide neuroprotective effects by attenuating inflammatory responses in nonclinical models of neuroinflammation.
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Affiliation(s)
- Susana S Correia
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Guang Liu
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Sarah Jacobson
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Sylvie G Bernier
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Jenny V Tobin
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Chad D Schwartzkopf
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Emily Atwater
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | | | - Sam Rivers
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Andrew Carvalho
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Peter Germano
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Kim Tang
- Ironwood Pharmaceuticals, Cambridge, MA, 02142, USA
| | - Rajesh R Iyengar
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Mark G Currie
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - John R Hadcock
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Christopher J Winrow
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA
| | - Juli E Jones
- Cyclerion Therapeutics, 245 First St., Riverview II, 18th Floor, Cambridge, MA, 02142, USA.
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Aerobic Conditions and Endogenous Reactive Oxygen Species Reduce the Production of Infectious MS2 Phage by Escherichia coli. Viruses 2021; 13:v13071376. [PMID: 34372580 PMCID: PMC8310082 DOI: 10.3390/v13071376] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2021] [Revised: 07/06/2021] [Accepted: 07/12/2021] [Indexed: 11/16/2022] Open
Abstract
Most of the defective/non-infectious enteric phages and viruses that end up in wastewater originate in human feces. Some of the causes of this high level of inactivity at the host stage are unknown. There is a significant gap between how enteric phages are environmentally transmitted and how we might design molecular tools that would only detect infectious ones. Thus, there is a need to explain the low proportion of infectious viral particles once replicated. By analyzing lysis plaque content, we were able to confirm that, under aerobic conditions, Escherichia coli produce low numbers of infectious MS2 phages (I) than the total number of phages indicated by the genome copies (G) with an I/G ratio of around 2%. Anaerobic conditions of replication and ROS inhibition increase the I/G ratio to 8 and 25%, respectively. These data cannot only be explained by variations in the total numbers of MS2 phages produced or in the metabolism of E. coli. We therefore suggest that oxidative damage impacts the molecular replication and assembly of MS2 phages.
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42
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Manuelli V, Pecorari C, Filomeni G, Zito E. Regulation of redox signaling in HIF-1-dependent tumor angiogenesis. FEBS J 2021; 289:5413-5425. [PMID: 34228878 DOI: 10.1111/febs.16110] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Revised: 05/24/2021] [Accepted: 07/05/2021] [Indexed: 12/11/2022]
Abstract
Angiogenesis is the process of blood vessel growth. The angiogenic switch consists of new blood vessel formation that, in carcinogenesis, can lead to the transition from a harmless cluster of dormant cells to a large tumorigenic mass with metastatic potential. Hypoxia, that is, the scarcity of oxygen, is a hallmark of solid tumors to which they adapt by activating hypoxia-inducible factor-1 (HIF-1), a transcription factor triggering de novo angiogenesis. HIF-1 and the angiogenic molecules that are expressed upon its activation are modulated by redox status. Modulations of the redox environment can influence the angiogenesis signaling at different levels, thereby impinging on the angiogenic switch. This review provides a molecular overview of the redox-sensitive steps in angiogenic signaling, the main molecular players involved, and their crosstalk with the unfolded protein response. New classes of inhibitors of these modulators which might act as antiangiogenic drugs in cancer are also discussed.
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Affiliation(s)
- Valeria Manuelli
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy
| | - Chiara Pecorari
- Redox Biology Group, Danish Cancer Society Research Center, Copenhagen, Denmark
| | - Giuseppe Filomeni
- Redox Biology Group, Danish Cancer Society Research Center, Copenhagen, Denmark.,Center for Healthy Aging, Copenhagen University, Denmark.,Department of Biology, Tor Vergata University, Rome, Italy
| | - Ester Zito
- Istituto di Ricerche Farmacologiche Mario Negri IRCCS, Milan, Italy.,Department of Biomolecular Sciences, University of Urbino Carlo Bo, Italy
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43
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Elumalai S, Karunakaran U, Moon JS, Won KC. NADPH Oxidase (NOX) Targeting in Diabetes: A Special Emphasis on Pancreatic β-Cell Dysfunction. Cells 2021; 10:cells10071573. [PMID: 34206537 PMCID: PMC8307876 DOI: 10.3390/cells10071573] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/12/2021] [Accepted: 06/16/2021] [Indexed: 12/24/2022] Open
Abstract
In type 2 diabetes, metabolic stress has a negative impact on pancreatic β-cell function and survival (T2D). Although the pathogenesis of metabolic stress is complex, an imbalance in redox homeostasis causes abnormal tissue damage and β-cell death due to low endogenous antioxidant expression levels in β-cells. Under diabetogenic conditions, the susceptibility of β-cells to oxidative damage by NADPH oxidase has been related to contributing to β-cell dysfunction. Here, we consider recent insights into how the redox response becomes deregulated under diabetic conditions by NADPH oxidase, as well as the therapeutic benefits of NOX inhibitors, which may provide clues for understanding the pathomechanisms and developing strategies aimed at the treatment or prevention of metabolic stress associated with β-cell failure.
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Affiliation(s)
- Suma Elumalai
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (S.E.); (U.K.)
| | - Udayakumar Karunakaran
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (S.E.); (U.K.)
| | - Jun-Sung Moon
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (S.E.); (U.K.)
- Department of Internal Medicine, Yeungnam Universtiy College of Medicine, Daegu 42415, Korea
- Correspondence: (J.-S.M.); (K.-C.W.); Tel.: +82-53-620-3825 (J.-S.W.); +82-53-620-3846 (K.-C.W.)
| | - Kyu-Chang Won
- Innovative Center for Aging Research, Yeungnam University Medical Center, Daegu 42415, Korea; (S.E.); (U.K.)
- Department of Internal Medicine, Yeungnam Universtiy College of Medicine, Daegu 42415, Korea
- Correspondence: (J.-S.M.); (K.-C.W.); Tel.: +82-53-620-3825 (J.-S.W.); +82-53-620-3846 (K.-C.W.)
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44
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Nunes Marsiglio-Librais G, Aparecida Vilas-Boas E, Carlein C, Hoffmann MDA, Roma LP, Carpinelli AR. Evidence for NADPH oxidase activation by GPR40 in pancreatic β-cells. Redox Rep 2021; 25:41-50. [PMID: 32354273 PMCID: PMC7241480 DOI: 10.1080/13510002.2020.1757877] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Objective: Investigate the involvement of the fatty acids receptor GPR40 in the assembly and activation of NADPH oxidase and the implications on pancreatic β-cell function. Methods: BRIN-BD11 β-cells were exposed to GPR40 agonist (GW9508) or linoleic acid in different glucose concentrations. Superoxide and H2O2 were analyzed, respectively, by DHE fluorescence and by fluorescence of the H2O2 sensor, roGFP2-Orp1. Protein contents of p47phox in plasma membrane and cytosol were analyzed by western blot. NADPH oxidase role was evaluated by p22phox siRNA or by pharmacological inhibition with VAS2870. NOX2 KO islets were used to measure total cytosolic calcium and insulin secretion. Results: GW9508 and linoleic acid increased superoxide and H2O2 contents at 5.6 and 8.3 mM of glucose. In addition, in 5.6 mM, but not at 16.7 mM of glucose, activation of GPR40 led to the translocation of p47phox to the plasma membrane. Knockdown of p22phox abolished the increase in superoxide after GW9508 and linoleic acid. No differences in insulin secretion were found between wild type and NOX2 KO islets treated with GW9508 or linoleic acid. Discussion: We report for the first time that acute activation of GPR40 leads to NADPH oxidase activation in pancreatic β-cells, without impact on insulin secretion.
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Affiliation(s)
| | - Eloisa Aparecida Vilas-Boas
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo, Brazil.,Department of Biophysics, Center for Human and Molecular Biology, CIPMM, Saarland University, Homburg/Saar, Germany
| | - Christopher Carlein
- Department of Biophysics, Center for Human and Molecular Biology, CIPMM, Saarland University, Homburg/Saar, Germany
| | | | - Leticia Prates Roma
- Department of Biophysics, Center for Human and Molecular Biology, CIPMM, Saarland University, Homburg/Saar, Germany
| | - Angelo Rafael Carpinelli
- Department of Physiology and Biophysics, Institute of Biomedical Sciences, University of São Paulo (USP), São Paulo, Brazil
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45
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Szekeres FLM, Walum E, Wikström P, Arner A. A small molecule inhibitor of Nox2 and Nox4 improves contractile function after ischemia-reperfusion in the mouse heart. Sci Rep 2021; 11:11970. [PMID: 34099836 PMCID: PMC8184855 DOI: 10.1038/s41598-021-91575-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 05/28/2021] [Indexed: 01/01/2023] Open
Abstract
The NADPH oxidase enzymes Nox2 and 4, are important generators of Reactive oxygen species (ROS). These enzymes are abundantly expressed in cardiomyocytes and have been implicated in ischemia-reperfusion injury. Previous attempts with full inhibition of their activity using genetically modified animals have shown variable results, suggesting that a selective and graded inhibition could be a more relevant approach. We have, using chemical library screening, identified a new compound (GLX481304) which inhibits Nox 2 and 4 (with IC50 values of 1.25 µM) without general antioxidant effects or inhibitory effects on Nox 1. The compound inhibits ROS production in isolated mouse cardiomyocytes and improves cardiomyocyte contractility and contraction of whole retrogradely (Langendorff) perfused hearts after a global ischemia period. We conclude that a pharmacological and partial inhibition of ROS production by inhibition of Nox 2 and 4 is beneficial for recovery after ischemia reperfusion and might be a promising venue for treatment of ischemic injury to the heart.
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Affiliation(s)
- Ferenc L M Szekeres
- Division of Genetic Physiology, Department of Physiology and Pharmacology, Karolinska Institutet, von Eulers Väg 8, 17177, Stockholm, Sweden.
- Division of Biomedicine, Department of Health and Education, University of Skövde, Högskolevägen 1, 541 28, Skövde, Sweden.
| | - Erik Walum
- Glucox Biotech AB, Frälsegårdsvägen 8, 179 97, Färentuna, Sweden
| | - Per Wikström
- Glucox Biotech AB, Frälsegårdsvägen 8, 179 97, Färentuna, Sweden
| | - Anders Arner
- Division of Genetic Physiology, Department of Physiology and Pharmacology, Karolinska Institutet, von Eulers Väg 8, 17177, Stockholm, Sweden
- Department of Clinical Sciences Lund, Thoracic Surgery, Lund University, c/o Igelösa Life Science AB Igelösa 373, 225 94, Lund, Sweden
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46
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Greenberg HZE, Zhao G, Shah AM, Zhang M. Role of oxidative stress in calcific aortic valve disease and its therapeutic implications. Cardiovasc Res 2021; 118:1433-1451. [PMID: 33881501 PMCID: PMC9074995 DOI: 10.1093/cvr/cvab142] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 04/19/2021] [Indexed: 12/12/2022] Open
Abstract
Calcific aortic valve disease (CAVD) is the end result of active cellular processes that lead to the progressive fibrosis and calcification of aortic valve leaflets. In western populations, CAVD is a significant cause of cardiovascular morbidity and mortality, and in the absence of effective drugs, it will likely represent an increasing disease burden as populations age. As there are currently no pharmacological therapies available for preventing, treating, or slowing the development of CAVD, understanding the mechanisms underlying the initiation and progression of the disease is important for identifying novel therapeutic targets. Recent evidence has emerged of an important causative role for reactive oxygen species (ROS)-mediated oxidative stress in the pathophysiology of CAVD, inducing the differentiation of valve interstitial cells into myofibroblasts and then osteoblasts. In this review, we focus on the roles and sources of ROS driving CAVD and consider their potential as novel therapeutic targets for this debilitating condition.
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Affiliation(s)
- Harry Z E Greenberg
- King's College London British Heart Foundation Centre of Research Excellence, London, UK
| | - Guoan Zhao
- Department of Cardiology, the First Affiliated Hospital of Xinxiang Medical University, Heart Center of Xinxiang Medical University, Henan, China
| | - Ajay M Shah
- King's College London British Heart Foundation Centre of Research Excellence, London, UK
| | - Min Zhang
- King's College London British Heart Foundation Centre of Research Excellence, London, UK
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47
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Sassetti E, Clausen MH, Laraia L. Small-Molecule Inhibitors of Reactive Oxygen Species Production. J Med Chem 2021; 64:5252-5275. [PMID: 33856791 DOI: 10.1021/acs.jmedchem.0c01914] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Reactive oxygen species (ROS) are involved in physiological cellular processes including differentiation, proliferation, and apoptosis by acting as signaling molecules or regulators of transcription factors. The maintenance of appropriate cellular ROS levels is termed redox homeostasis, a balance between their production and neutralization. High concentrations of ROS may contribute to severe pathological events including cancer, neurodegenerative, and cardiovascular diseases. In recent years, approaches to target the sources of ROS production directly in order to develop tool compounds or potential therapeutics have been explored. Herein, we briefly outline the major sources of cellular ROS production and comprehensively review the targeting of these by small-molecule inhibitors. We critically assess the value of ROS inhibitors with different mechanisms-of-action, including their potency, mode-of-action, known off-target effects, and clinical or preclinical status, while suggesting future avenues of research in the field.
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Affiliation(s)
- Elisa Sassetti
- Center for Nanomedicine and Theranostics, Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800 Kgs. Lyngby, Denmark
| | - Mads H Clausen
- Center for Nanomedicine and Theranostics, Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800 Kgs. Lyngby, Denmark
| | - Luca Laraia
- Center for Nanomedicine and Theranostics, Department of Chemistry, Technical University of Denmark, Kemitorvet 207, 2800 Kgs. Lyngby, Denmark
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48
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Fragoso-Morales LG, Correa-Basurto J, Rosales-Hernández MC. Implication of Nicotinamide Adenine Dinucleotide Phosphate (NADPH) Oxidase and Its Inhibitors in Alzheimer's Disease Murine Models. Antioxidants (Basel) 2021; 10:antiox10020218. [PMID: 33540840 PMCID: PMC7912941 DOI: 10.3390/antiox10020218] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/19/2021] [Accepted: 01/23/2021] [Indexed: 02/06/2023] Open
Abstract
Alzheimer’s disease (AD) is one of the main human dementias around the world which is constantly increasing every year due to several factors (age, genetics, environment, etc.) and there are no prevention or treatment options to cure it. AD is characterized by memory loss associated with oxidative stress (OS) in brain cells (neurons, astrocytes, microglia, etc.). OS can be produced by amyloid beta (Aβ) protein aggregation and its interaction with metals, mitochondrial damage and alterations between antioxidants and oxidant enzymes such as nicotinamide adenine dinucleotide phosphate (NADPH) oxidase. NADPH oxidase produces reactive oxygen species (ROS) and it is overexpressed in AD, producing large amounts of superoxide anions and hydrogen peroxide which damage brain cells and the vasculature. In addition, it has been reported that NADPH oxidase causes an imbalance of pH which could also influence in the amyloid beta (Aβ) production. Therefore, NADPH oxidase had been proposed as a therapeutic target in AD. However, there are no drugs for AD treatment such as an NADPH oxidase inhibitor despite great efforts made to stabilize the ROS production using antioxidant molecules. So, in this work, we will focus our attention on NADPH oxidase (NOX2 and NOX4) in AD as well as in AD models and later discuss the use of NADPH oxidase inhibitor compounds in AD.
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Affiliation(s)
- Leticia Guadalupe Fragoso-Morales
- Laboratorio de Biofísica y Biocatálisis, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Mexico City 11340, Mexico;
| | - José Correa-Basurto
- Laboratorio de Diseño y Desarrollo de Nuevos Fármacos e Innovación Biotecnológica, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón, Mexico City 11340, Mexico;
| | - Martha Cecilia Rosales-Hernández
- Laboratorio de Biofísica y Biocatálisis, Escuela Superior de Medicina, Instituto Politécnico Nacional, Plan de San Luis y Díaz Mirón s/n, Mexico City 11340, Mexico;
- Correspondence: ; Tel.: +(55)-572-960-00 (ext. 62767 & 62809)
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49
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Íñiguez-Gutiérrez L, Godínez-Méndez LA, Fafutis-Morris M, Padilla-Arellano JR, Corona-Rivera A, Bueno-Topete MR, Rojas-Rejón ÓA, Delgado-Rizo V. Physiological concentrations of short-chain fatty acids induce the formation of neutrophil extracellular traps in vitro. Int J Immunopathol Pharmacol 2020; 34:2058738420958949. [PMID: 33373277 PMCID: PMC7783874 DOI: 10.1177/2058738420958949] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
Abstract
Neutrophils represent the first line of host cellular defense against various
pathogens. The most recently described microbicidal mechanism of these cells is
the release of neutrophil extracellular traps (NET). Currently, a wide range of
chemical and biological stimuli are known to induce this response; however, the
effect of short-chain fatty acids (SCFAs) on the induction of NET is still
unknown. SCFAs are produced mainly by bacterial fermentation of dietary fiber
and are found in host tissues and blood. This study aimed to determine whether
physiological levels of SCFAs can induce the formation of NET. Previously
reported concentrations of SCFAs (as found in the colonic lumen and peripheral
blood in postprandial and basal states) were used to stimulate the neutrophils.
In order to determine the signaling pathway utilized by SCFAs, we tested the
inhibition of the Free Fatty Acid 2 Receptor (FFA2R) expressed in neutrophils
using CATPB, the inhibitor of FFA2R, genistein, an inhibitor of the downstream
Gα/q11 proteins and DPI, an inhibitor of the NADPH oxidase complex. The SCFAs at
colonic intestinal lumen concentrations were able to induce the formation of
NET, and when tested at concentrations found in the peripheral blood, only
acetic acid at 100 μM (fasting equivalent) and 700 μM (postprandial equivalent)
was found to induce the formation of NET. The administration of the competitive
inhibitor against the receptor or blockade of relevant G protein signaling and
the inhibition of NADPH oxidase complex decreased NET release. SCFAs stimulate
NET formation in vitro and this effect is mediated, in part, by the FFA2R.
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Affiliation(s)
- Liliana Íñiguez-Gutiérrez
- Laboratorio de Inmunología, Departamento
de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de
Guadalajara, Guadalajara, Jalisco, Mexico
| | - Lucila A Godínez-Méndez
- Laboratorio de Inmunología, Departamento
de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de
Guadalajara, Guadalajara, Jalisco, Mexico
| | - Mary Fafutis-Morris
- Centro de Investigación en Inmunología y
Dermatología, Centro Universitario de Ciencias de la Salud, Universidad de
Guadalajara, Guadalajara, Jalisco, Mexico
| | - Jorge R Padilla-Arellano
- Laboratorio de Inmunología, Departamento
de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de
Guadalajara, Guadalajara, Jalisco, Mexico
| | - Alfredo Corona-Rivera
- Laboratorio de Inmunología, Departamento
de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de
Guadalajara, Guadalajara, Jalisco, Mexico
| | - Miriam Ruth Bueno-Topete
- Instituto de Enfermedades
Crónico-Degenerativas, Departamento de Biología Molecular y Genómica, Centro
Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara,
Jalisco, Mexico
| | - Óscar A Rojas-Rejón
- Departamento de Procesos Tecnológicos e
Industriales, Instituto Tecnológico y de Estudios Superiores de Occidente,
Guadalajara, Jalisco, Mexico
| | - Vidal Delgado-Rizo
- Laboratorio de Inmunología, Departamento
de Fisiología, Centro Universitario de Ciencias de la Salud, Universidad de
Guadalajara, Guadalajara, Jalisco, Mexico
- Vidal Delgado-Rizo, Laboratorio de
Inmunología, Departamento de Fisiología, Centro Universitario de Ciencias de la
Salud, Universidad de Guadalajara, Av. Sierra Mojada 950, Colonia Independencia,
Guadalajara, Jalisco 45604, Mexico.
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50
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Rabani R, Cossette C, Graham F, Powell WS. Protein kinase C activates NAD kinase in human neutrophils. Free Radic Biol Med 2020; 161:50-59. [PMID: 33011272 DOI: 10.1016/j.freeradbiomed.2020.09.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Revised: 08/14/2020] [Accepted: 09/26/2020] [Indexed: 12/23/2022]
Abstract
NAD kinase (NADK) is required for the de novo synthesis of NADP+ from NAD+. In neutrophils, NADK plays an essential role by providing sufficient levels of NADPH to support a robust oxidative burst. Activation of NADPH oxidase-2 (NOX-2) in neutrophils by stimulators of protein kinase C (PKC), such as phorbol myristate acetate (PMA), results in the rapid generation of superoxide at the expense of oxidation of NADPH to NADP+. In this study, we measured the levels of pyridine nucleotides following the addition of PMA to neutrophils. PMA elicited a rapid increase in NADP+ in neutrophils, which was not due to oxidation of NADPH, the levels of which also rose. This was mirrored by a rapid reduction in NAD+ levels, suggesting that NADK had been activated. PMA-induced depletion of NAD+ in neutrophils was blocked by PKC inhibitors, but was not dependent on NOX-2, as it was not blocked by the NOX inhibitor, diphenyleneiodonium. PMA also increased NADK activity in neutrophil lysates as well as NADK phosphorylation, as revealed by a monoclonal antibody selective for phospho-NADK. Human recombinant NADK was phosphorylated by PKCδ, resulting in increased immunoreactivity, but unchanged enzyme activity, suggesting that PKC-induced phosphorylation alone is insufficient to increase NADK activity in neutrophils. This leads us to speculate that phosphorylation of NADK promotes the dissociation of an inhibitory molecule from a complex, thereby increasing enzyme activity. Activation of NADK by PKC in phagocytic cells could be critical for the rapid provision of sufficient levels of superoxide for host defence against invading microorganisms.
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Affiliation(s)
- Razieh Rabani
- Meakins-Christie Laboratories, Centre for Translational Biology, Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada
| | - Chantal Cossette
- Meakins-Christie Laboratories, Centre for Translational Biology, Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada
| | - François Graham
- Meakins-Christie Laboratories, Centre for Translational Biology, Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada
| | - William S Powell
- Meakins-Christie Laboratories, Centre for Translational Biology, Research Institute of the McGill University Health Centre, 1001 Decarie Blvd, Montreal, QC H4A 3J1, Canada.
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