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New Insights into the Nrf-2/HO-1 Signaling Axis and Its Application in Pediatric Respiratory Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:3214196. [PMID: 31827672 PMCID: PMC6885770 DOI: 10.1155/2019/3214196] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/19/2019] [Accepted: 11/02/2019] [Indexed: 12/13/2022]
Abstract
Respiratory diseases are one of the most common pediatric diseases in clinical practice. Their pathogenesis, diagnosis, and treatment are thus worthy of further investigation. The nuclear factor erythroid 2-related factor 2/heme oxygenase 1 (Nrf2/HO-1) signaling axis is a multiple organ protection chain that protects against oxidative stress injury. This signaling axis regulates anti-inflammation and antioxidation by regulating calcium ions, mitochondrial oxidative stress, autophagy, ferroptosis, pyroptosis, apoptosis, alkaliptosis, and clockophagy. This review presents an overview of the role of the Nrf2/HO-1 signaling axis in the pathogenesis of pediatric respiratory diseases and the latest research progress on this subject. Overall, the Nrf2/HO-1 signaling axis has an important clinical value in pediatric respiratory diseases, and its protective effect needs further exploration.
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Li Q, Xing S, Chen Y, Liao Q, Li Q, Liu Y, He S, Feng F, Chen Y, Zhang J, Liu W, Guo Q, Sun Y, Sun H. Reasonably activating Nrf2: A long-term, effective and controllable strategy for neurodegenerative diseases. Eur J Med Chem 2019; 185:111862. [PMID: 31735576 DOI: 10.1016/j.ejmech.2019.111862] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 11/06/2019] [Accepted: 11/06/2019] [Indexed: 02/06/2023]
Abstract
Neurodegenerative diseases are a variety of debilitating and fatal disorder in central nervous system (CNS). Besides targeting neuronal activity by influencing neurotransmitters or their corresponding receptors, modulating the underlying processes that lead to cell death, such as oxidative stress and mitochondrial dysfunction, should also be emphasized as an assistant strategy for neurodegeneration therapy. Nuclear factor (erythroid-derived 2)-like 2 (Nrf2) has been closely verified to be related to anti-inflammation and oxidative stress, rationally regulating its belonging pathway and activating Nrf2 is emphasized to be a potential treatment approach. There have existed multiple Nrf2 activators with different mechanisms and diverse structures, but those applied for neuro-disorders are still limited. On the basis of research arrangement and compound summary, we put forward the limitations of existing Nrf2 activators for neurodegenerative diseases and their future developing directions in enhancing the blood-brain barrier permeability to make Nrf2 activators function in CNS and designing Nrf2-based multi-target-directed ligands to affect multiple nodes in pathology of neurodegenerative diseases.
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Affiliation(s)
- Qi Li
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Shuaishuai Xing
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Ying Chen
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Qinghong Liao
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Qihang Li
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Yang Liu
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Siyu He
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Feng Feng
- Jiangsu Food and Pharmaceutical Science College, No.4 Meicheng Road, Huai'an, 223003, PR China
| | - Yao Chen
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, PR China
| | - Jie Zhang
- Department of Natural Medicinal Chemistry, China Pharmaceutical University, Nanjing, 211198, PR China
| | - Wenyuan Liu
- Department of Analytical Chemistry, School of Pharmacy, Key Laboratory of Drug Quality Control and Pharmacovigilance, Ministry of Education, China Pharmaceutical University, Nanjing, 210009, PR China
| | - Qinglong Guo
- State Key Laboratory of Natural Medicines, Jiangsu Key Laboratory of Carcinogenesis and Intervention, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, 210009, PR China
| | - Yuan Sun
- Department of Biochemistry and Molecular Medicine, School of Medicine, University of California Davis, Sacramento, 95817, USA
| | - Haopeng Sun
- Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing, 211198, PR China; Jiangsu Food and Pharmaceutical Science College, No.4 Meicheng Road, Huai'an, 223003, PR China.
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53
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Mechanistic insights into the inhibition mechanism of cysteine cathepsins by chalcone-based inhibitors—a QM cluster model approach. Struct Chem 2019. [DOI: 10.1007/s11224-018-1273-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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54
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The Therapeutic Effect of Curcumin in Quinolinic Acid-Induced Neurotoxicity in Rats is Associated with BDNF, ERK1/2, Nrf2, and Antioxidant Enzymes. Antioxidants (Basel) 2019; 8:antiox8090388. [PMID: 31514267 PMCID: PMC6769626 DOI: 10.3390/antiox8090388] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2019] [Revised: 08/24/2019] [Accepted: 08/29/2019] [Indexed: 01/06/2023] Open
Abstract
In the present study we investigated the participation of brain-derived neurotropic factor (BDNF) on the activation of the mitogen activated protein kinase (MAPK) protein extracellular signal-regulated kinase-1/2 (ERK1/2) as a mechanism of curcumin (CUR) to provide an antioxidant defense system mediated by the nuclear factor erythroid 2-related factor 2 (Nrf2) in the neurotoxic model induced by quinolinic acid (QUIN). Wistar rats received CUR (400 mg/kg, intragastrically) for 6 days after intrastriatal injection with QUIN (240 nmol). CUR improved the motor deficit and morphological alterations induced by QUIN and restored BDNF, ERK1/2, and Nrf2 levels. CUR treatment avoided the decrease in the protein levels of glutathione peroxidase (GPx), glutathione reductase (GR), γ-glutamylcysteine ligase (γ-GCL), and glutathione (GSH) levels. Only, the QUIN-induced decrease in the GR activity was prevented by CUR treatment. Finally, QUIN increased superoxide dismutase 2 (SOD2) and catalase (CAT) levels, and the γGCL and CAT activities; however, this increase was major in the QUIN+CUR group for γ-GCL, CAT, and SOD activities. These data suggest that the therapeutic effect of CUR could involve BDNF action on the activation of ERK1/2 to induce increased levels of protein and enzyme activity of antioxidant proteins regulated by Nrf2 and GSH levels.
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55
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Zhang Y, Wang G, Wang T, Cao W, Zhang L, Chen X. Nrf2–Keap1 pathway–mediated effects of resveratrol on oxidative stress and apoptosis in hydrogen peroxide–treated rheumatoid arthritis fibroblast‐like synoviocytes. Ann N Y Acad Sci 2019; 1457:166-178. [DOI: 10.1111/nyas.14196] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 06/12/2019] [Accepted: 06/24/2019] [Indexed: 01/20/2023]
Affiliation(s)
- Ye Zhang
- Department of Histology and EmbryologyAnhui Medical University Hefei Anhui P. R. China
- Microscopic Morphological Center LaboratoryAnhui Medical University Hefei Anhui P. R. China
| | - Gaoyuan Wang
- Department of Orthopaedicsthe First Affiliated Hospital of Anhui Medical University Hefei Anhui P. R. China
| | - Taorong Wang
- Department of Histology and EmbryologyAnhui Medical University Hefei Anhui P. R. China
- Microscopic Morphological Center LaboratoryAnhui Medical University Hefei Anhui P. R. China
| | - Wei Cao
- Department of Histology and EmbryologyAnhui Medical University Hefei Anhui P. R. China
- Microscopic Morphological Center LaboratoryAnhui Medical University Hefei Anhui P. R. China
| | - Lixia Zhang
- Department of Orthopaedicsthe First Affiliated Hospital of Anhui Medical University Hefei Anhui P. R. China
| | - Xiaoyu Chen
- Department of Histology and EmbryologyAnhui Medical University Hefei Anhui P. R. China
- Microscopic Morphological Center LaboratoryAnhui Medical University Hefei Anhui P. R. China
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56
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Koss-Mikołajczyk I, Baranowska M, Todorovic V, Albini A, Sansone C, Andreoletti P, Cherkaoui-Malki M, Lizard G, Noonan D, Sobajic S, Bartoszek A. Prophylaxis of Non-communicable Diseases: Why Fruits and Vegetables may be Better Chemopreventive Agents than Dietary Supplements Based on Isolated Phytochemicals? Curr Pharm Des 2019; 25:1847-1860. [DOI: 10.2174/1381612825666190702093301] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2019] [Accepted: 06/20/2019] [Indexed: 12/23/2022]
Abstract
The World Health Organization (WHO) report from 2014 documented that non-communicable socalled civilization diseases such as cardiovascular disease, chronic respiratory diseases, cancer or type 2 diabetes are responsible for over 50% of all premature deaths in the world. Research carried out over the past 20 years has provided data suggesting that diet is an essential factor influencing the risk of development of these diseases. The increasing knowledge on chemopreventive properties of certain food ingredients, in particular, those of plant origin, opened the discussion on the possibility to use edible plants or their active components in the prevention of these chronic diseases. Health-promoting properties of plant foods are associated with the presence of secondary metabolites that can affect many biological mechanisms of critical importance to the proper functioning of the human organism. Particularly, there have been numerous investigations indicating strong physiological effects of bioactive plant phenols belonging to the flavonoid family. These observations initiated mass production of dietary supplements containing flavonoids commercialized under the name antioxidants, even if their chemical properties did not justify such a term. However, epidemiological studies revealed that isolated bioactive phytochemicals are not as effective as fruits and vegetables containing these substances whereas they are of interest of the functional food industry. In this paper, the critical assessment of reasons for this turn of events has been attempted and the concept of food synergy has been suggested as a future strategy of dietary chemoprevention.
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Affiliation(s)
- Izabela Koss-Mikołajczyk
- Department of Food Chemistry, Technology and Biotechnology, Faculty of Chemistry, Gdańsk University of Technology, Gdansk, Poland
| | - Monika Baranowska
- Department of Food Chemistry, Technology and Biotechnology, Faculty of Chemistry, Gdańsk University of Technology, Gdansk, Poland
| | - Vanja Todorovic
- Department of Bromatology, Faculty of Pharmacy, University of Belgrade, Studentski trg 1, Beograd, GabrielaNarutowicza 11/12, 80-233, Gdanski, Serbia
| | - Adriana Albini
- Department of Medicine and Surgery, University of Milano-Bicocca, Milan, Italy
| | | | | | | | - Gérard Lizard
- BioPeroxIL Laboratory, Universite de Bourgogne-Franche Comte, France
| | | | - Sladjana Sobajic
- Department of Bromatology, Faculty of Pharmacy, University of Belgrade, Studentski trg 1, Beograd, GabrielaNarutowicza 11/12, 80-233, Gdanski, Serbia
| | - Agnieszka Bartoszek
- Department of Food Chemistry, Technology and Biotechnology, Faculty of Chemistry, Gdańsk University of Technology, Gdansk, Poland
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57
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Anticancer properties of 5Z-(4-fluorobenzylidene)-2-(4-hydroxyphenylamino)-thiazol-4-one. Sci Rep 2019; 9:10609. [PMID: 31337851 PMCID: PMC6650463 DOI: 10.1038/s41598-019-47177-6] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2019] [Accepted: 07/09/2019] [Indexed: 11/09/2022] Open
Abstract
4-thiazolidinones, which are privileged structures in medicinal chemistry, comprise the well-known class of heterocycles and are a source of new drug-like compounds. Undoubtedly, the 5-bulky-substituted-2,4-thiazolidinediones - a class of antihyperglycemic glitazones, which are peroxisome proliferator-activated receptor gamma (PPARγ) agonists, are the most described group among them. As there are various chemically distinct 4-thiazolidinones, different subtypes have been selected for studies; however, their main pharmacological profiles are similar. The aim of this study was to evaluate the anticancer activity of 5Z-(4-fluorobenzylidene)-2-(4-hydroxyphenylamino)-thiazol-4-one (Les-236) in four human cancer cell lines, A549, SCC-15, SH-SY5Y, and CACO-2, and investigate its impact on the production of reactive oxygen species (ROS) and the apoptotic process as well as cytotoxicity and metabolism in these cell lines. The cell lines were exposed to increasing concentrations (1 nM to 100 µM) of the studied compound for 6, 24, and 48 h, and later, ROS production, cell viability, caspase-3 activity, and cell metabolism were examined. The obtained results showed that the studied compound decreased the production of ROS, increased the release of lactate dehydrogenase, and decreased cell metabolism/proliferation in all the five cell lines at micromolar concentrations. Interestingly, over a wide range of concentrations (from 1 nM to 100 µM), Les-236 was able to increase the activity of caspase-3 in BJ (after 6 h of exposure), A549, CACO-2, and SCC-15 (after 48 h of exposure) cell lines which could be an effect of the activation of PPARγ-dependent pathways.
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58
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Different reactivity to glutathione but similar tumor cell
toxicity of chalcones and their quinolinone analogues. Med Chem Res 2019. [DOI: 10.1007/s00044-019-02384-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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59
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Hamlin TA, Fernández I, Bickelhaupt FM. How Dihalogens Catalyze Michael Addition Reactions. Angew Chem Int Ed Engl 2019; 58:8922-8926. [PMID: 31033118 PMCID: PMC6617756 DOI: 10.1002/anie.201903196] [Citation(s) in RCA: 74] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2019] [Revised: 04/04/2019] [Indexed: 11/12/2022]
Abstract
We have quantum chemically analyzed the catalytic effect of dihalogen molecules (X2 =F2 , Cl2 , Br2 , and I2 ) on the aza-Michael addition of pyrrolidine and methyl acrylate using relativistic density functional theory and coupled-cluster theory. Our state-of-the-art computations reveal that activation barriers systematically decrease as one goes to heavier dihalogens, from 9.4 kcal mol-1 for F2 to 5.7 kcal mol-1 for I2 . Activation strain and bonding analyses identify an unexpected physical factor that controls the computed reactivity trends, namely, Pauli repulsion between the nucleophile and Michael acceptor. Thus, dihalogens do not accelerate Michael additions by the commonly accepted mechanism of an enhanced donor-acceptor [HOMO(nucleophile)-LUMO(Michael acceptor)] interaction, but instead through a diminished Pauli repulsion between the lone-pair of the nucleophile and the Michael acceptor's π-electron system.
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Affiliation(s)
- Trevor A. Hamlin
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Israel Fernández
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA)Facultad de Ciencias QuímicaUniversidad Complutense de Madrid28040MadridSpain
| | - F. Matthias Bickelhaupt
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Institute for Molecules and Materials (IMM)Radboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
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60
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Bai F, Zhang B, Hou Y, Yao J, Xu Q, Xu J, Fang J. Xanthohumol Analogues as Potent Nrf2 Activators against Oxidative Stress Mediated Damages of PC12 Cells. ACS Chem Neurosci 2019; 10:2956-2966. [PMID: 31116948 DOI: 10.1021/acschemneuro.9b00171] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The nuclear factor erythroid 2-related factor 2 (Nrf2), a master transcription factor controlling a series of cytoprotective genes, is closely associated with scavenging the reactive oxygen species and maintaining the intracellular redox balance. Accumulating evidence has indicated that activation of Nrf2 is efficient to block or retard oxidative stress mediated neurodegenerative disorders. Small molecules that contribute directly or indirectly to the Nrf2 activation thus are promising therapeutic agents. Herein, we screened xanthohumol and its analogues, and two analogues (11 and 12) were disclosed to possess low cytotoxicity and rescue PC12 cells from the hydrogen peroxide or 6-hydroxydopamine induced injuries. Molecular mechanism studies demonstrated that compounds 11 and 12 are potent Nrf2 activators by promoting the nuclear accumulation of Nrf2 and enhancing the cellular antioxidant defense system. More importantly, genetically silencing the Nrf2 expression shuts down the observed cytoprotection conferred by both compounds, supporting the critical involvement of Nrf2 for the cellular actions of compounds 11 and 12.
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Affiliation(s)
- Feifei Bai
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Baoxin Zhang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Yanan Hou
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Juan Yao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Qianhe Xu
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Jianqiang Xu
- School of Life Science and Medicine & Panjin Industrial Technology Institute, Dalian University of Technology, Panjin Campus, Panjin 124221, China
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
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61
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Yan J, Pang Y, Zhuang J, Lin H, Zhang Q, Han L, Ke P, Zhuang J, Huang X. Selenepezil, a Selenium-Containing Compound, Exerts Neuroprotective Effect via Modulation of the Keap1-Nrf2-ARE Pathway and Attenuates Aβ-Induced Cognitive Impairment in Vivo. ACS Chem Neurosci 2019; 10:2903-2914. [PMID: 31035749 DOI: 10.1021/acschemneuro.9b00106] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress is a major risk factor for neurodegenerative disease. The Kelch-like ECH-associated protein 1 (Keap1)-nuclear factor erythroid 2 related factor 2 (Nrf2)-antioxidant response element (ARE) pathway is one of the most potent defensive systems against oxidative stress. Selenepezil, a selenium-based compound, was previously found to exhibit excellent acetylcholinesterase (AChE) inhibition, to mimic endogenous glutathione peroxidase (GPx) activity, and to exhibit scavenging activity for hydrogen peroxide in vitro. However, none of these activities have been evaluated in a cellular model, and detailed molecular mechanisms are not elucidated. Moreover, whether selenepezil ameliorates memory deficits in vivo remains unknown. This study validated the cytoprotective effect of selenepezil against 6-hydroxydopamine (6-OHDA)- or H2O2-induced SH-SY5Y cell damage via alleviation or neutralization of intracellular microtubule disorder, reactive oxygen species (ROS) accumulation, mitochondrial dysfunction, and cell apoptosis. Our study clearly demonstrated that selenepezil pretreatment exhibited remarkable cytoprotective effect in a Nrf2-dependent manner via activating the Keap1-Nrf2-ARE pathway and stimulating the transcription of Nrf2-ARE-regulated cytoprotective genes. Moreover, selenepezil·HCl exerts neuroprotective effect via attenuating Aβ-induced cognitive impairment in Alzheimer's disease (AD) rat and was more active than the reference drug donepezil. In summary, selenepezil deserves further consideration for AD therapy.
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Affiliation(s)
- Jun Yan
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
| | - Yanqing Pang
- Department of Integrated Chinese medicine immunization, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
| | - Jialing Zhuang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
| | - Haibiao Lin
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
| | - Qiaoxuan Zhang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
| | - Liqiao Han
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
| | - Peifeng Ke
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
| | - Junhua Zhuang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
| | - Xianzhang Huang
- Department of Laboratory Medicine, The Second Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510120, China
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62
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Hamlin TA, Fernández I, Bickelhaupt FM. Wie Dihalogene Michael‐Additionsreaktionen katalysieren. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201903196] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Trevor A. Hamlin
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam Niederlande
| | - Israel Fernández
- Departamento de Química Orgánica I and Centro de Innovación en Química Avanzada (ORFEO-CINQA)Facultad de Ciencias QuímicaUniversidad Complutense de Madrid 28040 Madrid Spanien
| | - F. Matthias Bickelhaupt
- Department of Theoretical ChemistryAmsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit Amsterdam De Boelelaan 1083 1081 HV Amsterdam Niederlande
- Institute for Molecules and Materials (IMM)Radboud University Heyendaalseweg 135 6525 AJ Nijmegen Niederlande
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63
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Peng S, Hou Y, Yao J, Fang J. Neuroprotection of mangiferin against oxidative damage via arousing Nrf2 signaling pathway in PC12 cells. Biofactors 2019; 45:381-392. [PMID: 30633833 DOI: 10.1002/biof.1488] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 12/11/2018] [Accepted: 12/19/2018] [Indexed: 12/11/2022]
Abstract
Accumulating evidence demonstrates that oxidative stress is involved in the pathogenesis and progression of neurodegeneration. As NF-E2-related factor 2 (Nrf2) plays a crucial role in maintaining cellular redox homeostasis, small molecules with the ability in activation of Nrf2 pathway are promising neuroprotective agents. Mangiferin (Mg) is a xanthone glucoside extracted from mangoes and papayas, and has been reported to possess multiple pharmacological activities. In this study, we investigated neuroprotective effects of Mg in the neuron-like rat pheochromocytoma cell line (PC12 cells). Mg scavenges different kinds of free radicals in vitro and attenuates hydrogen peroxide- or 6-hydroxydopamine-induced cell death. After treatment with Mg, a range of antioxidant genes governed by Nrf2 were upregulated, and the expressions and activities of these gene products were also elevated. Moreover, knockdown of Nrf2 antagonized the protective effect of Mg, indicating that Nrf2 is an essential factor in this cytoprotective process. In summary, our study demonstrates that Mg is a potent antioxidant that can provide neuroprotection against oxidative stress-mediated damage of PC12 cells. © 2019 BioFactors, 45(3):381-392, 2019.
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Affiliation(s)
- Shoujiao Peng
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, China
- Department of Molecular Medicine, The Scripps Research Institute, Jupiter, FL, USA
| | - Yanan Hou
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, China
| | - Juan Yao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, China
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu, China
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64
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Stepanić V, Matijašić M, Horvat T, Verbanac D, Kučerová-Chlupáčová M, Saso L, Žarković N. Antioxidant Activities of Alkyl Substituted Pyrazine Derivatives of Chalcones-In Vitro and In Silico Study. Antioxidants (Basel) 2019; 8:antiox8040090. [PMID: 30959820 PMCID: PMC6523444 DOI: 10.3390/antiox8040090] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2019] [Revised: 03/29/2019] [Accepted: 04/02/2019] [Indexed: 02/03/2023] Open
Abstract
Chalcones are polyphenolic secondary metabolites of plants, many of which have antioxidant activity. Herein, a set of 26 synthetic chalcone derivatives with alkyl substituted pyrazine heterocycle A and four types of the monophenolic ring B, were evaluated for the potential radical scavenging and antioxidant cellular capacity influencing the growth of cells exposed to H2O2. Before that, compounds were screened for cytotoxicity on THP-1 and HepG2 cell lines. Most of them were not cytotoxic in an overnight MTS assay. However, three of them, 4a, 4c and 4e showed 1,1-diphenyl-2-picrylhydrazyl (DPPH●) radical scavenging activity, through single electron transfer followed by a proton transfer (SET-PT) mechanism as revealed by density functional theory (DFT) modeling. DFT modeling of radical scavenging mechanisms was done at the SMD//(U)M052X/6-311++G** level. The in vitro effects of 4a, 4c and 4e on the growth of THP-1 cells during four days pre- or post-treatment with H2O2 were examined daily with the trypan blue exclusion assay. Their various cellular effects reflect differences in their radical scavenging capacity and molecular lipophilicity (clogP) and depend upon the cellular redox status. The applied simple in vitro-in silico screening cascade enables fast identification and initial characterization of potent radical scavengers.
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Affiliation(s)
- Višnja Stepanić
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, HR-10000 Zagreb, Croatia.
| | - Mario Matijašić
- Department for Intercellular Communication, Centre for Translational and Clinical Research and Croatian Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, Šalata 2, HR-10000 Zagreb, Croatia.
| | - Tea Horvat
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, HR-10000 Zagreb, Croatia.
| | - Donatella Verbanac
- Department for Intercellular Communication, Centre for Translational and Clinical Research and Croatian Centre of Excellence for Reproductive and Regenerative Medicine, School of Medicine, University of Zagreb, Šalata 2, HR-10000 Zagreb, Croatia.
- Department of Medical Biochemistry and Haematology, Faculty of Pharmacy and Biochemistry, University of Zagreb, Domagojeva 2, HR-10000 Zagreb, Croatia.
| | - Marta Kučerová-Chlupáčová
- Department of Pharmaceutical Chemistry and Pharmaceutical Analysis, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.
| | - Luciano Saso
- Department of Physiology and Pharmacology Vittorio Erspamer, Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Neven Žarković
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, HR-10000 Zagreb, Croatia.
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Simaan H, Lev S, Horwitz BA. Oxidant-Sensing Pathways in the Responses of Fungal Pathogens to Chemical Stress Signals. Front Microbiol 2019; 10:567. [PMID: 30941117 PMCID: PMC6433817 DOI: 10.3389/fmicb.2019.00567] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2018] [Accepted: 03/05/2019] [Indexed: 12/04/2022] Open
Abstract
Host defenses expose fungal pathogens to oxidants and antimicrobial chemicals. The fungal cell employs conserved eukaryotic signaling pathways and dedicated transcription factors to program its response to these stresses. The oxidant-sensitive transcription factor of yeast, YAP1, and its orthologs in filamentous fungi, are central to tolerance to oxidative stress. The C-terminal domain of YAP1 contains cysteine residues that, under oxidizing conditions, form an intramolecular disulfide bridge locking the molecule in a conformation where the nuclear export sequence is masked. YAP1 accumulates in the nucleus, promoting transcription of genes that provide the cell with the ability to counteract oxidative stress. Chemicals including xenobiotics and plant signals can also promote YAP1 nuclearization in yeast and filamentous fungi. This could happen via direct or indirect oxidative stress, or by a different biochemical pathway. Plant phenolics are known antioxidants, yet they have been shown to elicit cellular responses that would usually be triggered to counter oxidant stress. Here we will discuss the evidence that YAP1 and MAPK pathways respond to phenolic compounds. Following this and other examples, we explore here how oxidative-stress sensing networks of fungi might have evolved to detect chemical stressors. Furthermore, we draw functional parallels between fungal YAP1 and mammalian Keap1-Nrf2 signaling systems.
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Affiliation(s)
- Hiba Simaan
- Faculty of Biology, Technion - Israel Institute of Technology, Haifa, Israel
| | - Sophie Lev
- Centre for Infectious Diseases and Microbiology, The Westmead Institute for Medical Research, Westmead, NSW, Australia
| | - Benjamin A Horwitz
- Faculty of Biology, Technion - Israel Institute of Technology, Haifa, Israel
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Murakami Y, Kawata A, Suzuki S, Fujisawa S. Cytotoxicity and Pro-/Anti-inflammatory Properties of Cinnamates, Acrylates and Methacrylates Against RAW264.7 Cells. In Vivo 2019; 32:1309-1322. [PMID: 30348683 DOI: 10.21873/invivo.11381] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2018] [Revised: 07/17/2018] [Accepted: 07/19/2018] [Indexed: 12/19/2022]
Abstract
BACKGROUND/AIM Periodontitis is a chronic inflammatory disease linked to various systemic age-related conditions. It is known that α,β-unsaturated carbonyl compounds such as dietary cinnamates (β-phenyl acrylates) and related (meth)acrylates can have various positive and negative health effects, including cytotoxicity, allergic activity, pro-and anti-inflammatory activity, and anticancer activity. To clarify the anti-inflammatory properties of α,β-unsaturated carbonyl compounds without a phenolic group in the context of periodontal tissue inflammation and alveolar bone loss, we investigated the cytotoxicity and up-regulatory/down-regulatory effect of three trans-cinnamates (trans-cinnamic acid, methyl cinnamate, trans-cinnamaldehyde), two acrylates (ethyl acrylate, 2-hydroxyethyl acrylate), and three methacrylates (methyl methacrylate, 2-hydroxyethyl methacrylate, and triethyleneglycol dimethacrylate) using RAW264.7 cells. MATERIALS AND METHODS Cytotoxicity was determined using a cell counting kit (CCK-8) and mRNA expression was determined using real-time reverse transcriptase-polymerase chain reaction (RT-PCR). Pro-inflammatory and anti-inflammatory properties were assessed in terms of expression of mRNAs for cyclo-oxygenase-2 (Cox2), nitric oxide synthase 2 (Nos2), tumor necrosis factor-alpha (Tnfa) and heme oxygenase 1 (Ho1). RESULTS The most cytotoxic compound was 2-hydroxyethyl acrylate, followed by ethyl acrylate and cinnamaldehyde (50% lethal cytotoxic concentration, LC50=0.2-0.5 mM). Cox2 mRNA expression was up-regulated by cinnamaldehyde and 2-hydroxyethyl acrylate, particularly by the former. In contrast, the up-regulatory effect on Nos2 mRNA expression was in the order: cinnamaldehyde >> ethyl acrylate ≈ triethyleneglycol dimethacrylate >> methyl methacrylate ≈ methyl cinnamate. On the other hand, cinnamic acid and 2-hydroxyethyl methacrylate had no effect on gene expression. The two acrylates, but not cinnamates and methacrylates, up-regulated the expression of Ho1 mRNA at a non-cytotoxic concentration of 0.1 mM. Expression of Cox2, Nos2 and Tnfa mRNAs induced by Porphyromonas gingivalis lipopolysaccharide was greatly suppressed by cinnamaldehyde, methyl cinnamate and the two acrylates at 0.1 mM (p<0.05), and slightly, but significantly suppressed by cinnamic acid and methacrylates at 0.1-1 mM (p<0.05). CONCLUSION Cinnamaldehyde and acrylates exhibited both anti-inflammatory and pro-inflammatory properties, possibly due to their marked ability to act as Michael reaction acceptors, as estimated from the beta-carbon 13C-nuclear magnetic resonance spectra. Methyl cinnamate exhibited potent anti-inflammatory activity with less cytotoxicity and pro-inflammatory activity, suggesting that this compound may be useful for treatment of periodontal disease and related systemic diseases.
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Affiliation(s)
- Yukio Murakami
- Division of Oral Diagnosis and General Dentistry, Department of Diagnostic and Therapeutic Sciences, Meikai University School of Dentistry, Sakado, Japan
| | - Akifumi Kawata
- Division of Oral Diagnosis and General Dentistry, Department of Diagnostic and Therapeutic Sciences, Meikai University School of Dentistry, Sakado, Japan
| | - Seiji Suzuki
- Division of Oral Diagnosis and General Dentistry, Department of Diagnostic and Therapeutic Sciences, Meikai University School of Dentistry, Sakado, Japan
| | - Seiichiro Fujisawa
- Division of Oral Diagnosis and General Dentistry, Department of Diagnostic and Therapeutic Sciences, Meikai University School of Dentistry, Sakado, Japan
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Staurengo-Ferrari L, Badaro-Garcia S, Hohmann MSN, Manchope MF, Zaninelli TH, Casagrande R, Verri WA. Contribution of Nrf2 Modulation to the Mechanism of Action of Analgesic and Anti-inflammatory Drugs in Pre-clinical and Clinical Stages. Front Pharmacol 2019; 9:1536. [PMID: 30687097 PMCID: PMC6337248 DOI: 10.3389/fphar.2018.01536] [Citation(s) in RCA: 73] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Accepted: 12/17/2018] [Indexed: 12/12/2022] Open
Abstract
Despite the progress that has occurred in recent years in the development of therapies to treat painful and inflammatory diseases, there is still a need for effective and potent analgesics and anti-inflammatory drugs. It has long been known that several types of antioxidants also possess analgesic and anti-inflammatory properties, indicating a strong relationship between inflammation and oxidative stress. Understanding the underlying mechanisms of action of anti-inflammatory and analgesic drugs, as well as essential targets in disease physiopathology, is essential to the development of novel therapeutic strategies. The Nuclear factor-2 erythroid related factor-2 (Nrf2) is a transcription factor that regulates cellular redox status through endogenous antioxidant systems with simultaneous anti-inflammatory activity. This review summarizes the molecular mechanisms and pharmacological actions screened that link analgesic, anti-inflammatory, natural products, and other therapies to Nrf2 as a regulatory system based on emerging evidences from experimental disease models and new clinical trial data.
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Affiliation(s)
- Larissa Staurengo-Ferrari
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Stephanie Badaro-Garcia
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Miriam S. N. Hohmann
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Marília F. Manchope
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Tiago H. Zaninelli
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
| | - Rubia Casagrande
- Departamento de Ciências Farmacêuticas, Centro de Ciências da Saúde, Universidade Estadual de Londrina, Londrina, Brazil
| | - Waldiceu A. Verri
- Departamento de Patologia, Centro de Ciências Biológicas, Universidade Estadual de Londrina, Londrina, Brazil
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Role of Nrf2 and Its Activators in Respiratory Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2019; 2019:7090534. [PMID: 30728889 PMCID: PMC6341270 DOI: 10.1155/2019/7090534] [Citation(s) in RCA: 115] [Impact Index Per Article: 23.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/26/2018] [Revised: 11/22/2018] [Accepted: 12/03/2018] [Indexed: 02/07/2023]
Abstract
Transcription factor nuclear factor erythroid 2-related factor 2 (Nrf2) is a major regulator of antioxidant response element- (ARE-) driven cytoprotective protein expression. The activation of Nrf2 signaling plays an essential role in preventing cells and tissues from injury induced by oxidative stress. Under the unstressed conditions, natural inhibitor of Nrf2, Kelch-like ECH-associated protein 1 (Keap1), traps Nrf2 in the cytoplasm and promotes the degradation of Nrf2 by the 26S proteasome. Nevertheless, stresses including highly oxidative microenvironments, impair the ability of Keap1 to target Nrf2 for ubiquitination and degradation, and induce newly synthesized Nrf2 to translocate to the nucleus to bind with ARE. Due to constant exposure to external environments, including diverse pollutants and other oxidants, the redox balance maintained by Nrf2 is fairly important to the airways. To date, researchers have discovered that Nrf2 deletion results in high susceptibility and severity of insults in various models of respiratory diseases, including bronchopulmonary dysplasia (BPD), respiratory infections, acute respiratory distress syndrome (ARDS), chronic obstructive pulmonary disease (COPD), asthma, idiopathic pulmonary fibrosis (IPF), and lung cancer. Conversely, Nrf2 activation confers protective effects on these lung disorders. In the present review, we summarize Nrf2 involvement in the pathogenesis of the above respiratory diseases that have been identified by experimental models and human studies and describe the protective effects of Nrf2 inducers on these diseases.
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Peng S, Hou Y, Yao J, Fang J. Activation of Nrf2 by costunolide provides neuroprotective effect in PC12 cells. Food Funct 2019; 10:4143-4152. [DOI: 10.1039/c8fo02249f] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Costunolide (COS), a natural sesquiterpene lactone originally isolated from Inula helenium (Compositae), shows potent neuroprotective effects against oxidative stress-mediated injuries of PC12 cells via activating transcription factor Nrf2.
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Affiliation(s)
- Shoujiao Peng
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
- Department of Gastrointestinal Surgery/Hepatobiliary and Enteric Surgery Research Center
| | - Yanan Hou
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
| | - Juan Yao
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
| | - Jianguo Fang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- China
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Nagaraju GP, Benton L, Bethi SR, Shoji M, El-Rayes BF. Curcumin analogs: Their roles in pancreatic cancer growth and metastasis. Int J Cancer 2018; 145:10-19. [PMID: 30226272 DOI: 10.1002/ijc.31867] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 08/28/2018] [Accepted: 09/05/2018] [Indexed: 01/09/2023]
Abstract
Curcumin is a polyphenolic constituent of turmeric that is known to have various molecular effects in preclinical models, leading to prevention and anticancer properties. In clinical trials, curcumin has failed to demonstrate activity against pancreatic cancer possibly due to its low bioavailability and potency. Using the curcumin molecular model, our group and others have synthesized several analogs with better bioavailability and higher potency in pancreatic cancer in vitro and xenograft models. This mini review summarizes some of the known molecular effects of curcumin analogs and their potential role as novel therapeutics for pancreatic cancer.
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Affiliation(s)
| | - Leah Benton
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Shipra Reddy Bethi
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Mamoru Shoji
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
| | - Bassel F El-Rayes
- Department of Hematology and Medical Oncology, Winship Cancer Institute, Emory University, Atlanta, GA
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Keleku-Lukwete N, Suzuki M, Yamamoto M. An Overview of the Advantages of KEAP1-NRF2 System Activation During Inflammatory Disease Treatment. Antioxid Redox Signal 2018; 29:1746-1755. [PMID: 28899203 DOI: 10.1089/ars.2017.7358] [Citation(s) in RCA: 60] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Inflammation can be defined as a protective immune response against harmful exogenous and endogenous stimuli. Nevertheless, prolonged or autoimmune inflammatory responses are likely to cause pathological states that are associated with a production of inflammation-associated molecules along with reactive oxygen species (ROS). Kelch-like ECH-associated protein 1-nuclear factor erythroid 2-related factor 2 (KEAP1-NRF2) signaling provides a cell protection mechanism against oxidative insults when endogenous stress defense mechanisms are imbalanced. Understanding the roles of the KEAP1-NRF2 system in inflammation caused by various types of stimuli may aid in the development of new therapies. Recent Advances: There have been tremendous advances in understanding the mechanism by which the KEAP1-NRF2 pathway abrogates inflammation. In addition to the well-established ROS-dependent pathway, recent studies have provided evidence of the direct repression of the transcription of pro-inflammatory cytokine genes, such as IL1b and IL6 (encoding Interleukin-1β and Interleukin-6, respectively). Further, the expanding functions of NRF2 have elicited interest in the development of therapeutic modalities for inflammatory diseases, including multiple sclerosis and sickle cell disease. Critical Issues and Future Directions: Despite progress in the understanding of molecular mechanisms supporting the roles that NRF2 plays during inflammation, the relationship between NRF2 and other transcription factors and mediators of inflammation still remains ambiguous. Further studies are required to address the effects of functional polymorphisms in KEAP1 and NRF2 that modify susceptibility to specific disease-related inflammation. Comprehensive analyses in the future should explore tissue- or cell-type specific NRF2 activation to elaborate effects of NRF2 induction. Antioxid. Redox Signal. 00, 000-000.
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Affiliation(s)
- Nadine Keleku-Lukwete
- 1 Department of Medical Biochemistry, Tohoku University Graduate School of Medicine , Sendai, Japan
| | - Mikiko Suzuki
- 2 Center for Radioisotope Sciences, Tohoku University Graduate School of Medicine , Sendai, Japan
| | - Masayuki Yamamoto
- 1 Department of Medical Biochemistry, Tohoku University Graduate School of Medicine , Sendai, Japan
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Ahmed T, Khan AU, Abbass M, Filho ER, Ud Din Z, Khan A. Synthesis, characterization, molecular docking, analgesic, antiplatelet and anticoagulant effects of dibenzylidene ketone derivatives. Chem Cent J 2018; 12:134. [PMID: 30523436 PMCID: PMC6768048 DOI: 10.1186/s13065-018-0507-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Accepted: 11/29/2018] [Indexed: 12/13/2022] Open
Abstract
In this study dibenzylidene ketone derivatives (2E,5E)-2-(4-methoxybenzylidene)-5-(4-nitrobenzylidene) cyclopentanone (AK-1a) and (1E,4E)-4-(4-nitrobenzylidene)-1-(4-nitrophenyl) oct-1-en-3-one (AK-2a) were newly synthesized, inspired from curcuminoids natural origin. Novel scheme was used for synthesis of AK-1a and AK-2a. The synthesized compounds were characterized by spectroscopic techniques. AK-1a and AK-2a showed high computational affinities (E-value > - 9.0 kcal/mol) against cyclooxygenase-1, cyclooxygenase-2, proteinase-activated receptor 1 and vitamin K epoxide reductase. AK-1a and AK-2a showed moderate docking affinities (E-value > - 8.0 kcal/mol) against mu receptor, kappa receptor, delta receptor, human capsaicin receptor, glycoprotein IIb/IIIa, prostacyclin receptor I2, antithrombin-III, factor-II and factor-X. AK-1a and AK-2a showed lower affinities (E-value > - 7.0 kcal/mol) against purinoceptor-3, glycoprotein-VI and purinergic receptor P2Y12. In analgesic activity, AK-1a and AK-2a decreased numbers of acetic acid-induced writhes (P < 0.001 vs. saline group) in mice. AK-1a and AK-2a significantly prolonged the latency time of mice (P < 0.05, P < 0.01 and P < 0.001 vs. saline group) in hotplate assay. AK-1a and AK-2a inhibited arachidonic acid and adenosine diphosphate induced platelet aggregation with IC50 values of 65.2, 37.7, 750.4 and 422 µM respectively. At 30, 100, 300 and 1000 µM concentrations, AK-1a and AK-2a increased plasma recalcification time (P < 0.001 and P < 0.001 vs. saline group) respectively. At 100, 300 and 1000 µg/kg doses, AK-1a and AK-2a effectively prolonged bleeding time (P < 0.001 and P < 0.01 vs. saline group) respectively. Thus in-silico, in-vitro and in-vivo investigation of AK-1a and AK-2a reports their analgesic, antiplatelet and anticoagulant actions.
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Affiliation(s)
- Tauqeer Ahmed
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
| | - Arif-Ullah Khan
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan.
| | - Muzaffar Abbass
- Riphah Institute of Pharmaceutical Sciences, Riphah International University, Islamabad, Pakistan
- Department of Pharmacy, Capital University of Science and Technology, Islamabad, Pakistan
| | - Edson Rodrigues Filho
- LaBioMMi, Department of Chemistry, Federal University of São Carlos, CP 676, São Carlos, SP, 13565-905, Brazil
| | - Zia Ud Din
- LaBioMMi, Department of Chemistry, Federal University of São Carlos, CP 676, São Carlos, SP, 13565-905, Brazil
- Department of Chemistry, Woman University Swabi, GulooDehri, Topi Road, Swabi, KP, 23340, Pakistan
| | - Aslam Khan
- Basic Sciences Department, College of Science and Health Professions-(COSHP-J), King Saud bin Abdulaziz University for Health Sciences, Jeddah, Saudi Arabia
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Zaio YP, Gatti G, Ponce AA, Saavedra Larralde NA, Martinez MJ, Zunino MP, Zygadlo JA. Cinnamaldehyde and related phenylpropanoids, natural repellents, and insecticides against Sitophilus zeamais (Motsch.). A chemical structure-bioactivity relationship. JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE 2018; 98:5822-5831. [PMID: 29756351 DOI: 10.1002/jsfa.9132] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/20/2017] [Revised: 05/07/2018] [Accepted: 05/09/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND The insecticidal and repellent effects on adult Sitophilus zeamais of 12 cinnamaldehyde-related compounds was evaluated by contact toxicity bioassays and a two-choice olfactometer. To determine non-toxicity in mammals, body weight, serum biochemical profiles, liver weight, physiological parameters, sperm motility, and histopathological data were obtained as complementary information in C57BL/6 mice treated with the best natural compound. RESULTS Based on 24 h LC95 and LC50 values, α-methyl-cinnamaldehyde and cinnamaldehyde exhibited better insecticidal action than the other compounds. The best repellent effect was observed with α-bromo-cinnamaldehyde, which even repelled at the lowest concentration studied (0.28 µmol L-1 ). The evaluation of a quantitative structure-activity relationship found a linear relationship between the LC50 values for adult weevil toxicity and dipolo with Q values (giving the difference between orbital electronegativity carbon 1 and orbital electronegativity carbon 3 of the molecule) in cinnamaldehyde-related compounds. The polar surface and Log P descriptors also revealed a linear relationship with the S. zeamais repellent effect for cinnamaldehyde analogues. Cinnamaldehyde did not show toxicity in the parameters evaluated in mice. CONCLUSION From the phenylpropanoid components studied, the natural compound that had the best insecticidal and repellent action against S. zeamais was cinnamaldehyde. It presented no mammalian toxicity. © 2018 Society of Chemical Industry.
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Affiliation(s)
- Yésica P Zaio
- Instituto de Ciencias y Tecnología de los Alimentos (ICTA). Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto Multidisciplinario de Biologia Vegetal (IMBIV) - CONICET, Córdoba, Argentina
| | - Gerardo Gatti
- Departamento de Bioquímica Clínica, Facultad de Ciencias Químicas, Centro de Investigación en Bioquímica Clínica e Inmunología, Universidad Nacional de Córdoba, Córdoba, Argentina
- Fundación para el Progreso de la Medicina, Córdoba, Argentina
| | - Andrés A Ponce
- Cátedra de Fisiología Humana. Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
- Cátedra de Fisiología Humana, Dpto. de Ciencias de la Salud y Educación, Universidad Nacional de la Rioja, La Rioja, Argentina
| | - Natalia A Saavedra Larralde
- Cátedra de Patología, Hospital Nacional de Clínicas, Facultad de Ciencias Médicas, Universidad Nacional de Córdoba, Córdoba, Argentina
| | - María J Martinez
- Laboratory Calidad de Granos Área Mejoramiento Genético Vegetal EEA INTA Manfredi Ruta 9 Km 636 Manfredi (X5988) Estación Experimental Manfredi, INTA (Instituto Nacional de Tecnología Agropecuaria), Córdoba, Argentina
| | - María P Zunino
- Instituto de Ciencias y Tecnología de los Alimentos (ICTA). Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto Multidisciplinario de Biologia Vegetal (IMBIV) - CONICET, Córdoba, Argentina
| | - Julio A Zygadlo
- Instituto de Ciencias y Tecnología de los Alimentos (ICTA). Facultad de Ciencias Exactas, Físicas y Naturales, Universidad Nacional de Córdoba, Córdoba, Argentina
- Instituto Multidisciplinario de Biologia Vegetal (IMBIV) - CONICET, Córdoba, Argentina
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Shin SY, Lee J, Park J, Lee Y, Ahn S, Lee JH, Koh D, Lee YH, Lim Y. Design, synthesis, and biological activities of 1-aryl-(3-(2-styryl)phenyl)prop-2-en-1-ones. Bioorg Chem 2018; 83:438-449. [PMID: 30448722 DOI: 10.1016/j.bioorg.2018.11.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Revised: 09/12/2018] [Accepted: 11/05/2018] [Indexed: 11/24/2022]
Abstract
A moderate elevation in reactive oxygen species (ROS) levels can generally be controlled in normal cells, but may lead to death of cancer cells as the ROS level in cancer cells is already elevated. Therefore, a ROS-generating compound can act as a selective chemotherapeutic agent for cancer cells that does not affect normal cells. In our previous study, a compound containing a Michael acceptor was selectively cytotoxic to cancer cells without affecting normal cells; therefore, we designed and synthesized 26 compounds containing a Michael acceptor. Their cytotoxicities against HCT116 human colon cancer cell lines were measured by using a clonogenic long-term survival assay. To derive the structural conditions required to obtain stronger cytotoxicity against cancer cells, the relationships between the half-maximal cell growth inhibitory concentration values of the synthesized compounds and their physicochemical properties were evaluated by Comparative Molecular Field Analysis and Comparative Molecular Similarity Indices Analysis. It was confirmed that the compound with the best half-maximal cell growth inhibitory concentration triggered apoptosis through ROS generation, which then led to stimulation of the caspase pathway.
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Affiliation(s)
- Soon Young Shin
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea
| | - Junho Lee
- Division of Bioscience and Biotechnology, BBRC, Konkuk University, Seoul 05029, Republic of Korea
| | - Jihyun Park
- Division of Bioscience and Biotechnology, BBRC, Konkuk University, Seoul 05029, Republic of Korea
| | - Youngshim Lee
- Division of Bioscience and Biotechnology, BBRC, Konkuk University, Seoul 05029, Republic of Korea
| | - Seunghyun Ahn
- Division of Bioscience and Biotechnology, BBRC, Konkuk University, Seoul 05029, Republic of Korea
| | - Ji Hye Lee
- Department of Applied Chemistry, Dongduk Women's University, Seoul 02748, Republic of Korea
| | - Dongsoo Koh
- Department of Applied Chemistry, Dongduk Women's University, Seoul 02748, Republic of Korea
| | - Young Han Lee
- Department of Biological Sciences, Konkuk University, Seoul 05029, Republic of Korea.
| | - Yoongho Lim
- Division of Bioscience and Biotechnology, BBRC, Konkuk University, Seoul 05029, Republic of Korea.
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Rungratanawanich W, Memo M, Uberti D. Redox Homeostasis and Natural Dietary Compounds: Focusing on Antioxidants of Rice ( Oryza sativa L.). Nutrients 2018; 10:nu10111605. [PMID: 30388764 PMCID: PMC6265930 DOI: 10.3390/nu10111605] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 10/25/2018] [Accepted: 10/26/2018] [Indexed: 12/11/2022] Open
Abstract
Redox homeostasis may be defined as the dynamic equilibrium between electrophiles and nucleophiles to maintain the optimum redox steady state. This mechanism involves complex reactions, including nuclear factor erythroid 2-related factor 2 (Nrf2) pathway, activated by oxidative stress in order to restore the redox balance. The ability to maintain the optimal redox homeostasis is fundamental for preserving physiological functions and preventing phenotypic shift toward pathological conditions. Here, we reviewed mechanisms involved in redox homeostasis and how certain natural compounds regulate the nucleophilic tone. In addition, we focused on the antioxidant properties of rice and particularly on its bioactive compound, γ-oryzanol. It is well known that γ-oryzanol exerts a variety of beneficial effects mediated by its antioxidant properties. Recently, γ-oryzanol was also found as a Nrf2 inducer, resulting in nucleophilic tone regulation and making rice a para-hormetic food.
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Affiliation(s)
- Wiramon Rungratanawanich
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy.
| | - Maurizio Memo
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy.
| | - Daniela Uberti
- Department of Molecular and Translational Medicine, University of Brescia, 25123 Brescia, Italy.
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Kim CS, Noh SG, Park Y, Kang D, Chun P, Chung HY, Jung HJ, Moon HR. A Potent Tyrosinase Inhibitor, ( E)-3-(2,4-Dihydroxyphenyl)-1-(thiophen-2-yl)prop-2-en-1-one, with Anti-Melanogenesis Properties in α-MSH and IBMX-Induced B16F10 Melanoma Cells. Molecules 2018; 23:molecules23102725. [PMID: 30360412 PMCID: PMC6222382 DOI: 10.3390/molecules23102725] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2018] [Revised: 10/16/2018] [Accepted: 10/19/2018] [Indexed: 01/24/2023] Open
Abstract
In this study, we designed and synthesized eight thiophene chalcone derivatives (1a–h) as tyrosinase inhibitors and evaluated their mushroom tyrosinase inhibitory activities. Of these eight compounds, (E)-3-(2,4-dihydroxyphenyl)-1-(thiophen-2-yl)prop-2-en-1-one (1c) showed strong competitive inhibition activity against mushroom tyrosinase with IC50 values of 0.013 μM for tyrosine hydroxylase and 0.93 μM for dopa oxidase. In addition, we used enzyme kinetics study and docking program to further evaluate the inhibitory mechanism of 1c toward tyrosinase. As an underlying mechanism of 1c mediated anti-melanogenic effect, we investigated the inhibitory activity against melanin contents and cellular tyrosinase in B16F10 melanoma cells. As the results, the enzyme kinetics and docking results supports that 1c highly interacts with tyrosinase residues in the tyrosinase active site and it can directly inhibit tyrosinase as competitive inhibitor. In addition, 1c exhibited dose-dependent inhibitory effects in melanin contents and intracellular tyrosinase on α-MSH and IBMX-induced B16F10 cells. Overall, our results suggested that 1c might be considered potent tyrosinase inhibitor for use in the development of therapeutic agents for diseases associated with hyperpigment disorders.
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Affiliation(s)
- Chang Seok Kim
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
- Interdisciplinary Research Program of Bioinformatics and Longevity Science, College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Sang Gyun Noh
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
- Interdisciplinary Research Program of Bioinformatics and Longevity Science, College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Yujin Park
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Dongwan Kang
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Pusoon Chun
- College of Pharmacy and Inje Institute of Pharmaceutical Sciences and Research, Inje University, Gimhae, Gyeongnam 50834, Korea.
| | - Hae Young Chung
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
- Interdisciplinary Research Program of Bioinformatics and Longevity Science, College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Hee Jin Jung
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
| | - Hyung Ryong Moon
- College of Pharmacy, Pusan National University, Busan 46241, Korea.
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77
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Cytoprotective Effects of Natural Compounds against Oxidative Stress. Antioxidants (Basel) 2018; 7:antiox7100147. [PMID: 30347819 PMCID: PMC6210295 DOI: 10.3390/antiox7100147] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 10/16/2018] [Accepted: 10/16/2018] [Indexed: 12/12/2022] Open
Abstract
Oxidative stress, an imbalance between reactive oxygen species and antioxidants, has been witnessed in pathophysiological states of many disorders. Compounds identified from natural sources have long been recognized to ameliorate oxidative stress due to their inherent antioxidant activities. Here, we summarize the cytoprotective effects and mechanisms of natural or naturally derived synthetic compounds against oxidative stress. These compounds include: caffeic acid phenethyl ester (CAPE) found in honey bee propolis, curcumin from turmeric roots, resveratrol abundant in grape, and 1-[2-cyano-3,12-dioxooleana-1,9(11)-dien-28-oyl] imidazole (CDDO-Im), a synthetic triterpenoid based on naturally occurring oleanolic acid. Cytoprotective effects of these compounds in diseases conditions like cardiovascular diseases and obesity to decrease oxidative stress are discussed.
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78
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Woelflingseder L, Del Favero G, Blažević T, Heiss EH, Haider M, Warth B, Adam G, Marko D. Impact of glutathione modulation on the toxicity of the Fusarium mycotoxins deoxynivalenol (DON), NX-3 and butenolide in human liver cells. Toxicol Lett 2018; 299:104-117. [PMID: 30244016 DOI: 10.1016/j.toxlet.2018.09.007] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Revised: 09/07/2018] [Accepted: 09/17/2018] [Indexed: 12/21/2022]
Abstract
DON, NX-3 and butenolide (BUT) are secondary metabolites formed by Fusarium graminearum. Evidence for formation of DON-glutathione adducts exists in plants, and also in human liver (HepG2) cells mass spectrometric evidence for GSH-adduct formation was reported. NX-3 is a DON derivative lacking structural features for Thiol-Michael addition, while BUT has the structural requirements (conjugated double bond and keto group). In the present study, we addressed whether these structural differences affect levels of intracellular reactive oxygen species in HepG2 cells, and if intracellular GSH levels influence toxic effects induced by DON, NX-3 and BUT. Pre-treatment with an inhibitor of GSH bio-synthesis, L-buthionine-[S,R]-sulfoximine, aggravated substantially BUT-induced cytotoxicity (≥50 μM, 24 h), but only marginally affected the cytotoxicity of DON and NX-3 indicating that GSH-mediated detoxification is of minor importance in HepG2 cells. We further investigated whether BUT, a compound inducing alone low oral toxicity, might affect the toxicity of DON. Under different experimental designs with respect to pre- and/or co-incubations, BUT was found to contribute to the combinatorial cytotoxicity, exceeding the toxic effect of DON alone. The observed combinatorial effects underline the potential contribution of secondary metabolites like BUT, considered to be alone of low toxicological relevance, to the toxicity of DON or structurally related trichothecenes, arguing for further studies on the toxicological relevance of naturally occurring mixtures.
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Affiliation(s)
- Lydia Woelflingseder
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria.
| | - Giorgia Del Favero
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria.
| | - Tina Blažević
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.
| | - Elke H Heiss
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria.
| | - Maximilian Haider
- Institute for Applied Synthetic Chemistry, Vienna University of Technology, Getreidemarkt 9/163, 1060 Vienna, Austria.
| | - Benedikt Warth
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria.
| | - Gerhard Adam
- Department of Applied Genetics and Cell Biology, University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Strasse 24, 3430 Tulln, Austria.
| | - Doris Marko
- Department of Food Chemistry and Toxicology, Faculty of Chemistry, University of Vienna, Währingerstrasse 38, 1090 Vienna, Austria.
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79
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Kumar SN, Bavikar SR, Pavan Kumar CNSS, Yu IF, Chein RJ. From Carbamate to Chalcone: Consecutive Anionic Fries Rearrangement, Anionic Si → C Alkyl Rearrangement, and Claisen-Schmidt Condensation. Org Lett 2018; 20:5362-5366. [PMID: 30148638 DOI: 10.1021/acs.orglett.8b02269] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A highly efficient one-pot procedure was developed for the synthesis of various 2'-hydroxychalcones from phenyl diethylcarbamate, featuring consecutive Snieckus-Fries rearrangement, anionic Si → C alkyl rearrangement, and Claisen-Schmidt condensation in a single operation. The applicability of this protocol was demonstrated by the highly efficient synthesis of the anti-inflammatory natural product lonchocarpin. The mechanism insight is also provided.
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Affiliation(s)
| | - Suhas Ravindra Bavikar
- Institute of Chemistry , Academia Sinica , Nankang, Taipei 11529 , Taiwan.,Molecular Science and Technology Program, Taiwan International Graduate Program , Academia Sinica and National Tsing Hua University , Hsinchu 30013 , Taiwan
| | - Chebolu Naga Sesha Sai Pavan Kumar
- Institute of Chemistry , Academia Sinica , Nankang, Taipei 11529 , Taiwan.,Division of Chemistry, Department of Sciences and Humanities , Vignan's Foundation for Science, Technology, and Research , Vadlamudi, Guntur , Andhra Pradesh , India
| | - Isaac Furay Yu
- Department of Chemistry , National Taiwan University , Taipei 10617 , Taiwan
| | - Rong-Jie Chein
- Institute of Chemistry , Academia Sinica , Nankang, Taipei 11529 , Taiwan
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80
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Anderson RH, Lensing CJ, Forred BJ, Amolins MW, Aegerter CL, Vitiello PF, Mays JR. Differentiating Antiproliferative and Chemopreventive Modes of Activity for Electron-Deficient Aryl Isothiocyanates against Human MCF-7 Cells. ChemMedChem 2018; 13:1695-1710. [PMID: 29924910 PMCID: PMC6105534 DOI: 10.1002/cmdc.201800348] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2018] [Revised: 06/12/2018] [Indexed: 12/13/2022]
Abstract
The consumption of Brassica vegetables provides beneficial effects through organic isothiocyanates (ITCs), products of the enzymatic hydrolysis of glucosinolate secondary metabolites. The ITC l-sulforaphane (l-SFN) is the principle agent in broccoli that demonstrates several modes of anticancer action. While the anticancer properties of ITCs like l-SFN have been extensively studied and l-SFN has been the subject of multiple human clinical trials, the scope of this work has largely been limited to those derivatives found in nature. Previous studies have demonstrated that structural changes in an ITC can lead to marked differences in a compound's potency to 1) inhibit the growth of cancer cells, and 2) alter cellular transcriptional profiles. This study describes the preparation of a library of non-natural aryl ITCs and the development of a bifurcated screening approach to evaluate the dose- and time-dependence on antiproliferative and chemopreventive properties against human MCF-7 breast cancer cells. Antiproliferative effects were evaluated using a commercial MTS cell viability assay. Chemopreventive properties were evaluated using an antioxidant response element (ARE)-promoted luciferase reporter assay. The results of this study have led to the identification of 1) several key structure-activity relationships and 2) lead ITCs for continued development.
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Affiliation(s)
- Ruthellen H. Anderson
- Department of Chemistry Augustana University 2001 S. Summit Ave. Sioux Falls, SD 57197
| | - Cody J. Lensing
- Department of Chemistry Augustana University 2001 S. Summit Ave. Sioux Falls, SD 57197
| | - Benjamin J. Forred
- Environmental Influences on Health and Disease Group Sanford Research 2301 E. 60 St. N. Sioux Falls, SD 57104
| | - Michael W. Amolins
- Department of Chemistry Augustana University 2001 S. Summit Ave. Sioux Falls, SD 57197
- Environmental Influences on Health and Disease Group Sanford Research 2301 E. 60 St. N. Sioux Falls, SD 57104
| | - Cassandra L. Aegerter
- Environmental Influences on Health and Disease Group Sanford Research 2301 E. 60 St. N. Sioux Falls, SD 57104
| | - Peter F. Vitiello
- Environmental Influences on Health and Disease Group Sanford Research 2301 E. 60 St. N. Sioux Falls, SD 57104
| | - Jared R. Mays
- Department of Chemistry Augustana University 2001 S. Summit Ave. Sioux Falls, SD 57197
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81
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Kouka P, Chatzieffraimidi GA, Raftis G, Stagos D, Angelis A, Stathopoulos P, Xynos N, Skaltsounis AL, Tsatsakis AM, Kouretas D. Antioxidant effects of an olive oil total polyphenolic fraction from a Greek Olea europaea variety in different cell cultures. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 47:135-142. [PMID: 30166098 DOI: 10.1016/j.phymed.2018.04.054] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Revised: 03/20/2018] [Accepted: 04/29/2018] [Indexed: 06/08/2023]
Abstract
BACKGROUND Numerous studies have been carried out concerning the advantageous health effects, especially the antioxidant effects, of olive oil's (OO) individual biophenolic compounds, but none until now for its total phenolic fraction (TPF). Plenty of evidence, in research about nutrition and healthiness, points out that it is the complex mixture of nutritional polyphenols, more than each compound separate, which can synergistically act towards a health result. PURPOSE The aim of the present study was to examine the antioxidant properties of an extra virgin olive oil (EVOO) total polyphenolic fraction, from a Greek endemic variety of Olea europaea in cell lines. METHODS EVOO from a Greek endemic variety was used for the extraction of a total polyphenolic fraction, using a green CPE‑based method. The redox status [in terms of ROS, GSH, TBARS, protein carbonyls] was assessed at a cellular level, particularly in EA.hy926 endothelial, HeLa, HepG2 hepatic cells and C2C12 myoblasts. Moreover, the levels of glutamate-cysteine ligase catalytic subunit (γ-GCLc) of GSH, one of the most important antioxidant enzymes, were assessed by western blot. RESULTS According to the results, TPF improves the redox profile of all cell lines, mainly by increasing GSH and its catalytic subunit, while at low, not cytotoxic TPF concentrations there was a decrease in TBARS and carbonyls. Regarding ROS levels a reduction was observed only in the HepG2 cell line, contrary to the other cell lines, that there is no statistically significant difference. CONCLUSION The TPF appeared to protect cells from oxidative stress due to the strong antioxidant activity of its polyphenols. This could have interesting implications in development of new products based on this olive oil to provide protection and treatment against harmful effects of free radicals.
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Affiliation(s)
- Paraskevi Kouka
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa 41500, Greece
| | | | - Grigorios Raftis
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa 41500, Greece
| | - Dimitrios Stagos
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa 41500, Greece
| | - Apostolis Angelis
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece
| | - Panagiotis Stathopoulos
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece
| | | | - Alexios-Leandros Skaltsounis
- Department of Pharmacognosy and Natural Products Chemistry, Faculty of Pharmacy, University of Athens, 15771 Athens, Greece
| | - Aristides M Tsatsakis
- Laboratory of Toxicology, Faculty of Medicine, University of Crete, 71003 Heraklion, Greece
| | - Demetrios Kouretas
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa 41500, Greece.
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82
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The Keap1/Nrf2-ARE Pathway as a Pharmacological Target for Chalcones. Molecules 2018; 23:molecules23071803. [PMID: 30037040 PMCID: PMC6100069 DOI: 10.3390/molecules23071803] [Citation(s) in RCA: 64] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 07/18/2018] [Accepted: 07/18/2018] [Indexed: 01/14/2023] Open
Abstract
Chalcones have shown a broad spectrum of biological activities with clinical potential against various diseases. The biological activities are mainly attributed to the presence in the chalcones of the α,β-unsaturated carbonyl system, perceived as a potential Michael acceptor. Chalcones could activate the Kelch-like ECH-associated protein 1 (Keap1)/Nuclear factor erythroid 2-related factor 2 (Nrf2) pathway through a Michael addition reaction with the cysteines of Keap1, which acts as a redox sensor and negative regulator of Nrf2. This modification allows the dissociation of Nrf2 from the cytoplasmic complex with Keap1 and its nuclear translocation. At this level, Nrf2 binds to the antioxidant response element (ARE) and activates the expression of several detoxification, antioxidant and anti-inflammatory genes as well as genes involved in the clearance of damaged proteins. In this regard, the Keap1/Nrf2–ARE pathway is a new potential pharmacological target for the treatment of many chronic diseases. In this review we summarize the current progress in the study of Keap1/Nrf2–ARE pathway activation by natural and synthetic chalcones and their potential pharmacological applications. Among the pharmacological activities highlighted, anti-inflammatory activity was more evident than others, suggesting a multi-target Michael acceptor mechanism for the chalcones involving key regulators of the Nrf2 and nuclear factor- κB (NF-κB) pathways.
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83
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Yamamoto M, Kensler TW, Motohashi H. The KEAP1-NRF2 System: a Thiol-Based Sensor-Effector Apparatus for Maintaining Redox Homeostasis. Physiol Rev 2018; 98:1169-1203. [PMID: 29717933 PMCID: PMC9762786 DOI: 10.1152/physrev.00023.2017] [Citation(s) in RCA: 1035] [Impact Index Per Article: 172.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
The Kelch-like ECH-associated protein 1-NF-E2-related factor 2 (KEAP1-NRF2) system forms the major node of cellular and organismal defense against oxidative and electrophilic stresses of both exogenous and endogenous origins. KEAP1 acts as a cysteine thiol-rich sensor of redox insults, whereas NRF2 is a transcription factor that robustly transduces chemical signals to regulate a battery of cytoprotective genes. KEAP1 represses NRF2 activity under quiescent conditions, whereas NRF2 is liberated from KEAP1-mediated repression on exposure to stresses. The rapid inducibility of a response based on a derepression mechanism is an important feature of the KEAP1-NRF2 system. Recent studies have unveiled the complexities of the functional contributions of the KEAP1-NRF2 system and defined its broader involvement in biological processes, including cell proliferation and differentiation, as well as cytoprotection. In this review, we describe historical milestones in the initial characterization of the KEAP1-NRF2 system and provide a comprehensive overview of the molecular mechanisms governing the functions of KEAP1 and NRF2, as well as their roles in physiology and pathology. We also refer to the clinical significance of the KEAP1-NRF2 system as an important prophylactic and therapeutic target for various diseases, particularly aging-related disorders. We believe that controlled harnessing of the KEAP1-NRF2 system is a key to healthy aging and well-being in humans.
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84
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Lee YH, Song NY, Suh J, Kim DH, Kim W, Ann J, Lee J, Baek JH, Na HK, Surh YJ. Curcumin suppresses oncogenicity of human colon cancer cells by covalently modifying the cysteine 67 residue of SIRT1. Cancer Lett 2018; 431:219-229. [PMID: 29807115 DOI: 10.1016/j.canlet.2018.05.036] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2018] [Revised: 05/22/2018] [Accepted: 05/23/2018] [Indexed: 12/22/2022]
Abstract
SIRT1, an NAD+-dependent histone/protein deacetylase, has diverse physiological actions. Recent studies have demonstrated that SIRT1 is overexpressed in colorectal cancer, suggesting its oncogenic potential. However, the molecular mechanisms by which overexpressed SIRT1 induces the progression of colorectal cancer and its inhibition remain largely unknown. Curcumin (diferuloymethane), a major component of the spice turmeric derived from the plant Curcuma longa L., has been reported to exert chemopreventive and anti-carcinogenic effects on colon carcinogenesis. In the present study, we found that curcumin reduced the expression of SIRT1 protein without influencing its mRNA expression in human colon cancer cells, suggesting posttranslational regulation of SIRT1 by this phytochemical. Notably, ubiquitination and subsequent proteasomal degradation of SIRT1 were induced by curcumin treatment. Results of nano-LC-ESI-MS/MS revealed the direct binding of curcumin to cysteine 67 of SIRT1. In line with this result, the protein stability and clonogenicity of a mutant SIRT1 in which cysteine 67 was substituted by alanine were unaffected by curcumin. Taken together, these observations suggest that curcumin facilitates the proteasomal degradation of oncogenic SIRT1 through covalent modification of SIRT1 at the cysteine 67 residue.
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Affiliation(s)
- Yeon-Hwa Lee
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Na-Young Song
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jinyoung Suh
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Do-Hee Kim
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Wonki Kim
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jihyae Ann
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jeewoo Lee
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea
| | - Jeong-Heum Baek
- Division of Colon and Rectal Surgery, Department of Surgery, Gil Medical Center, Gachon University College of Medicine, Incheon, 21565, Republic of Korea
| | - Hye-Kyung Na
- Department of Food Science and Biotechnology, College of Knowledge-Based Services Engineering, Sungshin Women's University, Seoul, 01133, Republic of Korea
| | - Young-Joon Surh
- Tumor Microenvironment Global Core Research Center and Research Institute of Pharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea; Cancer Research Institute, Seoul National University, Seoul, 03080, Republic of Korea; Department of Molecular Medicine and Biopharmaceutical Sciences, College of Pharmacy, Seoul National University, Seoul, 08826, Republic of Korea.
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85
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Bernardes A, D'Oliveira GDC, Silezin A, Kuzma M, Molnár S, Noda Pérez C, Perjési P. Reagent-induced asymmetric induction in addition reaction of reduced glutathione onto bis-Mannich chalcones. Arch Pharm (Weinheim) 2018; 351:e1700386. [PMID: 29775221 DOI: 10.1002/ardp.201700386] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Revised: 12/10/2017] [Accepted: 04/24/2018] [Indexed: 11/10/2022]
Abstract
The stereochemistry of non-enzyme catalyzed nucleophilic addition of GSH to 4'-hydroxychalcone 1 and its bis-Mannich derivative 2 was investigated at different pH values (pH 3.2, 6.1, 7.4, and 8.0). The stereochemical outcome of the reactions was evaluated by HPLC-UV-Vis method. Under strongly acidic conditions (pH 3.2), an unexpected diastereoselective addition of GSH onto the bis-Mannich derivative 2 was observed. Such a selectivity could not be observed in the similar reaction of 2 with N-acetylcysteine. The observed stereoselectivity can be rationalized by ion-pair formation between the protonated Mannich nitrogens and the deprotonated GSH(glutamate)-carboxylate. To the best of our knowledge, this is the first example of reagent-induced asymmetric induction in Michael-type additions of thiols.
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Affiliation(s)
- Aline Bernardes
- Institute of Chemistry, Federal University of Goiás, Goiânia, Brazil.,Institute of Pharmaceutical Chemistry, University of Pécs, Pécs, Hungary
| | - Giulio D C D'Oliveira
- Institute of Chemistry, Federal University of Goiás, Goiânia, Brazil.,Institute of Pharmaceutical Chemistry, University of Pécs, Pécs, Hungary
| | - Aneta Silezin
- Institute of Pharmaceutical Chemistry, University of Pécs, Pécs, Hungary.,Faculty of Chemistry, Maria Curie-Sklodowska University, Lublin, Poland
| | - Mónika Kuzma
- Institute of Pharmaceutical Chemistry, University of Pécs, Pécs, Hungary
| | - Szilárd Molnár
- Institute of Pharmaceutical Chemistry, University of Pécs, Pécs, Hungary
| | | | - Pál Perjési
- Institute of Pharmaceutical Chemistry, University of Pécs, Pécs, Hungary
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86
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Sun Y, Yang T, Leak RK, Chen J, Zhang F. Preventive and Protective Roles of Dietary Nrf2 Activators Against Central Nervous System Diseases. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2018; 16:326-338. [PMID: 28042770 DOI: 10.2174/1871527316666170102120211] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/20/2016] [Revised: 12/03/2016] [Accepted: 12/14/2016] [Indexed: 02/06/2023]
Abstract
Central nervous system diseases are major health issues and are often associated with disability or death. Most central nervous system disorders are characterized by high levels of oxidative stress. Nuclear factor erythroid 2 related factor (Nrf2) is known for its ability to regulate the expression of a series of enzymes with antioxidative, prosurvival, and detoxification effects. Under basal conditions, Nrf2 forms a complex with Kelch-like ECH associated protein 1, leading to Nrf2 inactivation via ubiquitination and degradation. However, following exposure of Keap1 to oxidative stress, Nrf2 is released from Keap1, activated, and translocated into the nucleus. Upon nuclear entry, Nrf2 binds to antioxidant response elements (ARE), thereby inducing the expression of genes such as glutathione s-transferase, heme oxygenase 1, and NADPH quinine oxidoreductase 1. Many dietary phytochemicals have been reported to activate the protective Nrf2/ARE pathway. Here, we review the preventive and protective effects of dietary Nrf2 activators against CNS diseases, including stroke, traumatic brain injury, Alzheimer's disease, and Parkinson's disease.
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Affiliation(s)
- Yang Sun
- Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213. United States
| | - Tuo Yang
- Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213. United States
| | - Rehana K Leak
- Division of Pharmaceutical Sciences, Mylan School of Pharmacy, Duquesne University, Pittsburgh, PA 15282. United States
| | - Jun Chen
- Department of Neurology, Pittsburgh Institute of Brain Disorders and Recovery, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213. United States
| | - Feng Zhang
- Department of Neurology, University of Pittsburgh School of Medicine, Pittsburgh, PA 15213. United States
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87
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Abulfadl YS, El-Maraghy NN, Ahmed AAE, Nofal S, Abdel-Mottaleb Y, Badary OA. Thymoquinone alleviates the experimentally induced Alzheimer’s disease inflammation by modulation of TLRs signaling. Hum Exp Toxicol 2018; 37:1092-1104. [DOI: 10.1177/0960327118755256] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Alzheimer’s disease (AD) is characterized by a robust inflammatory response elicited by the accumulation and deposition of amyloid-β (Aβ) within the brain. Aβ induces detrimental inflammatory responses through toll-like receptors (TLRs) signaling pathway. Thymoquinone (TQ), the main active constituent of Nigella sativa oil, has been reported by several previous studies for its potent anti-inflammatory effect. The aim of this study is to elucidate the effect of TQ in improving learning and memory, using a rat model of AD induced by a combination of aluminum chloride (AlCl3) and d-galactose (d-Gal). TQ was administered orally at doses of 10, 20, and 40 mg/kg/day for 14 days after AD induction. Memory functions were assessed using the step through passive avoidance test. Amyloid plaques were shown to be present using hematoxylin and eosin staining. Tumor necrosis factor-alpha (TNF-α) and Interleukin-1beta (IL-1β) levels in brain were assessed via ELISA and profiling TLR-2, TLR-4, myeloid differential factor 88, toll–interleukin-1 receptor domain-containing adapter-inducing interferon-β, interferon regulatory factor 3 (IRF-3), and nuclear factor-κB (NF-κB) expressions via real-time polymerase chain reaction. TQ improved AD rat cognitive decline, decreased Aβ formation and accumulation, significantly decreased TNF-α and IL-1β at all levels of doses and significantly downregulated the expression of TLRs pathway components as well as their downstream effectors NF-κB and IRF-3 mRNAs at all levels of doses ( p < 0.05). We concluded that TQ reduced the inflammation induced by d-Gal/AlCl3 combination. It is therefore reasonable to assign the anti-inflammatory responses to the modulation of TLRs pathway.
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Affiliation(s)
- YS Abulfadl
- Department of Pharmacology, Toxicology, and Biochemistry, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University, Cairo, Egypt
| | - NN El-Maraghy
- Department of Pharmacology, Toxicology, and Biochemistry, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University, Cairo, Egypt
| | - AA Eissa Ahmed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Helwan University, Helwan, Egypt
| | - S Nofal
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Helwan University, Helwan, Egypt
| | - Y Abdel-Mottaleb
- Department of Pharmacology, Toxicology, and Biochemistry, Faculty of Pharmaceutical Sciences and Pharmaceutical Industries, Future University, Cairo, Egypt
| | - OA Badary
- Department of Clinical Pharmacy, Faculty of Pharmacy, Ain Shams University, Cairo, Egypt
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88
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Sharath Babu GR, Anand T, Ilaiyaraja N, Khanum F, Gopalan N. Pelargonidin Modulates Keap1/Nrf2 Pathway Gene Expression and Ameliorates Citrinin-Induced Oxidative Stress in HepG2 Cells. Front Pharmacol 2017; 8:868. [PMID: 29230174 PMCID: PMC5711834 DOI: 10.3389/fphar.2017.00868] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2017] [Accepted: 11/10/2017] [Indexed: 01/11/2023] Open
Abstract
Pelargonidin chloride (PC) is one of the major anthocyanin found in berries, radish and other natural foods. Many natural chemopreventive compounds have been shown to be potent inducers of phase II detoxification genes and its up-regulation is important for oxidative stress related disorders. In the present study, we investigated the effect of PC in ameliorating citrinin (CTN) induced cytotoxicity and oxidative stress. The cytotoxicity of CTN was evaluated by treating HepG2 (Human hepatocellular carcinoma) cells with CTN (0–150 μM) in a dose dependent manner for 24 h, and the IC50 was determined to be 96.16 μM. CTN increased lactate dehydrogenase leakage (59%), elevated reactive oxygen species (2.5-fold), depolarized mitochondrial membrane potential as confirmed by JC-1 monomers and arrested cell cycle at G2/M phase. Further, apoptotic and necrotic analysis revealed significant changes followed by DNA damage. To overcome these toxicological effects, PC was pretreated for 2 h followed by CTN exposure for 24 h. Pretreatment with PC resulted in significant increase in cell viability (84.5%), restored membrane integrity, reactive oxygen species level were maintained and cell cycle phases were normal. PC significantly up-regulated the activity of detoxification enzymes: heme oxygenase 1 (HO-1), glutathione transferase, glutathione peroxidase, superoxide dismutase and quinone reductase. Nrf2 translocation into the nucleus was also observed by immunocytochemistry analysis. These data demonstrate the protective effect of PC against CTN-induced oxidative stress in HepG2 cells and up-regulated the activity of detoxification enzyme levels through Keap1/Nrf2 signaling pathway.
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Affiliation(s)
- G R Sharath Babu
- Biochemistry and Nano Sciences Division, Defence Food Research Laboratory, Mysore, India
| | - Tamatam Anand
- Biochemistry and Nano Sciences Division, Defence Food Research Laboratory, Mysore, India
| | - N Ilaiyaraja
- Biochemistry and Nano Sciences Division, Defence Food Research Laboratory, Mysore, India
| | - Farhath Khanum
- Biochemistry and Nano Sciences Division, Defence Food Research Laboratory, Mysore, India
| | - N Gopalan
- Food Biotechnology Division, Defence Food Research Laboratory, Mysore, India
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89
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Deck LM, Hunsaker LA, Vander Jagt TA, Whalen LJ, Royer RE, Vander Jagt DL. Activation of anti-oxidant Nrf2 signaling by enone analogues of curcumin. Eur J Med Chem 2017; 143:854-865. [PMID: 29223100 DOI: 10.1016/j.ejmech.2017.11.048] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2017] [Revised: 10/31/2017] [Accepted: 11/18/2017] [Indexed: 12/24/2022]
Abstract
Inflammation and oxidative stress are common in many chronic diseases. Targeting signaling pathways that contribute to these conditions may have therapeutic potential. The transcription factor Nrf2 is a major regulator of phase II detoxification and anti-oxidant genes as well as anti-inflammatory and neuroprotective genes. Nrf2 is widespread in the CNS and is recognized as an important regulator of brain inflammation. The natural product curcumin exhibits numerous biological activities including ability to induce the expression of Nrf2-dependent phase II and anti-oxidant enzymes. Curcumin has been examined in a number of clinical studies with limited success, mainly owing to limited bioavailability and rapid metabolism. Enone analogues of curcumin were examined with an Nrf2 reporter assay to identify Nrf2 activators. Analogues were separated into groups with a 7-carbon dienone spacer, as found in curcumin; a 5-carbon enone spacer with and without a ring; and a 3-carbon enone spacer. Activators of Nrf2 were found in all three groups, many of which were more active than curcumin. Dose-response studies demonstrated that a range of substituents on the aromatic rings of these enones influenced not only the sensitivity to activation, reflected in EC50 values, but also the extent of activation, which suggests that multiple mechanisms are involved in the activation of Nrf2 by these analogues.
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Affiliation(s)
- Lorraine M Deck
- Department of Chemistry and Chemical Biology, University of New Mexico, MSC03 2060, 1 University of New Mexico, Albuquerque, NM 87131, USA.
| | - Lucy A Hunsaker
- Department of Biochemistry and Molecular Biology, University of New Mexico School of Medicine, MSC08 4670, Fitz Hall, Room 249, 1 University of New Mexico, Albuquerque, NM 87131, USA
| | - Thomas A Vander Jagt
- Department of Biochemistry and Molecular Biology, University of New Mexico School of Medicine, MSC08 4670, Fitz Hall, Room 249, 1 University of New Mexico, Albuquerque, NM 87131, USA
| | - Lisa J Whalen
- Department of Chemistry and Chemical Biology, University of New Mexico, MSC03 2060, 1 University of New Mexico, Albuquerque, NM 87131, USA
| | - Robert E Royer
- Department of Biochemistry and Molecular Biology, University of New Mexico School of Medicine, MSC08 4670, Fitz Hall, Room 249, 1 University of New Mexico, Albuquerque, NM 87131, USA
| | - David L Vander Jagt
- Department of Biochemistry and Molecular Biology, University of New Mexico School of Medicine, MSC08 4670, Fitz Hall, Room 249, 1 University of New Mexico, Albuquerque, NM 87131, USA
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90
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Hou W, Zhang G, Luo Z, Li D, Ruan H, Ruan BH, Su L, Xu H. Identification of a diverse synthetic abietane diterpenoid library and insight into the structure-activity relationships for antibacterial activity. Bioorg Med Chem Lett 2017; 27:5382-5386. [PMID: 29153424 DOI: 10.1016/j.bmcl.2017.11.014] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Revised: 11/06/2017] [Accepted: 11/08/2017] [Indexed: 01/12/2023]
Abstract
A diverse natural product-like (NPL) synthetic abietane diterpenoid library containing 86 compounds were obtained and the SARs were studied based on their antibacterial potential. Further in vitro cytotoxic and in silico drug-like properties evaluation showed that the potent antibacterial compound 84 had good drug-like properties and displayed low cytotoxicity toward noncancerous mammalian cells, indicating the study of AA and DHAA might be a good starting point for the search of novel antimicrobial molecules. Future work should be focused on the optimization of their potency and selectivity.
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Affiliation(s)
- Wei Hou
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Guanjun Zhang
- College of Chemical Engineering and Materials Science, Tianjin University of Science & Technology, Tianjin 300457, PR China
| | - Zhi Luo
- Shanghai Evergene Biotech Co., Ltd., Shanghai 201499, PR China
| | - Di Li
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Haoqiang Ruan
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Benfang Helen Ruan
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, PR China
| | - Lin Su
- College of Pharmaceutical Science, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, PR China.
| | - Hongtao Xu
- Shanghai Institute for Advanced Immunochemical Studies, ShanghaiTech University, Shanghai 201210, PR China.
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91
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Nrf2, a Potential Therapeutic Target against Oxidative Stress in Corneal Diseases. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:2326178. [PMID: 29209447 PMCID: PMC5676473 DOI: 10.1155/2017/2326178] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Accepted: 09/20/2017] [Indexed: 01/09/2023]
Abstract
Corneal diseases are one of the major causes of blindness worldwide. Conservative medical agents, which may prevent sight-threatening corneal disease progression, are urgently desired. Numerous evidences have revealed the involvement of oxidative stress in various corneal diseases, such as corneal wound healing and Fuchs endothelial corneal dystrophy (FECD). Nuclear factor (erythroid-derived 2)-like 2 (Nrf2)/Kelch-like erythroid-cell-derived protein with CNC homology- (ECH-) associated protein 1 (Keap1)/antioxidant response element (ARE) signaling is well known as one of the main antioxidative defense systems. To the best of our knowledge, this is the first review to elucidate the different expression profiles of Nrf2 signaling as well as the underlying mechanisms in corneal diseases, implicating that Nrf2 may serve as a potentially promising therapeutic target for corneal diseases.
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92
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Kaminskyy D, Kryshchyshyn A, Lesyk R. Recent developments with rhodanine as a scaffold for drug discovery. Expert Opin Drug Discov 2017; 12:1233-1252. [PMID: 29019278 DOI: 10.1080/17460441.2017.1388370] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
INTRODUCTION Rhodanines, as one of the 4-thiazolidinones subtypes, are recognized as privileged heterocycles in medicinal chemistry. The main achievements include the development of drug-like molecules with numerous biological activities as well as approved drugs. Among rhodanines, 5-ene-rhodanines are of special interest, and are often claimed as pan assay interference compounds due to Michael acceptor functionality. Areas covered: Herein, the synthetic protocols for rhodanines and their transformation are reviewed. Biological activity is briefly discussed as well as biotargets, mode of actions and optimization directions. Furthermore, the utilization of 5-ene-rhodanines in Michael additions are discussed while both pro and contra arguments have been outlined within medicinal chemistry application. Expert opinion: Rhodanines remain privileged heterocycles in drug discovery. They are accessible building blocks for optimization and transformation into related heterocycles, simplified analogues and fused heterocycles with a thiazolidine framework. Michael acceptor functionality, as well as the thesis about low selectivity towards biotargets of rhodanines, must be confirmed experimentally and it cannot be based on just the presence of conjugated α,β-unsaturated carbonyl. Moreover, the positive aspects of Michael acceptors must be considered as well as their multitarget properties. New criteria for target affinity must be found. In conclusion, rhodanines are generally not problematic per se.
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Affiliation(s)
- Danylo Kaminskyy
- a Department of Pharmaceutical, Organic and Bioorganic Chemistry , Danylo Halytsky Lviv National Medical University , Lviv-10 , Ukraine
| | - Anna Kryshchyshyn
- a Department of Pharmaceutical, Organic and Bioorganic Chemistry , Danylo Halytsky Lviv National Medical University , Lviv-10 , Ukraine
| | - Roman Lesyk
- a Department of Pharmaceutical, Organic and Bioorganic Chemistry , Danylo Halytsky Lviv National Medical University , Lviv-10 , Ukraine
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93
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Dayalan Naidu S, Dikovskaya D, Gaurilcikaite E, Knatko EV, Healy ZR, Mohan H, Koh G, Laurell A, Ball G, Olagnier D, de la Vega L, Ganley IG, Talalay P, Dinkova-Kostova AT. Transcription factors NRF2 and HSF1 have opposing functions in autophagy. Sci Rep 2017; 7:11023. [PMID: 28887499 PMCID: PMC5591275 DOI: 10.1038/s41598-017-11262-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 08/22/2017] [Indexed: 12/19/2022] Open
Abstract
Autophagy plays a critical role in the maintenance of cellular homeostasis by degrading proteins, lipids and organelles. Autophagy is activated in response to stress, but its regulation in the context of other stress response pathways, such as those mediated by heat shock factor 1 (HSF1) and nuclear factor-erythroid 2 p45-related factor 2 (NRF2), is not well understood. We found that the Michael acceptor bis(2-hydoxybenzylidene)acetone (HBB2), a dual activator of NRF2 and HSF1, protects against the development of UV irradiation-mediated cutaneous squamous cell carcinoma in mice. We further show that HBB2 is an inducer of autophagy. In cells, HBB2 increases the levels of the autophagy-cargo protein p62/sequestosome 1, and the lipidated form of microtubule-associated protein light chain 3 isoform B. Activation of autophagy by HBB2 is impaired in NRF2-deficient cells, which have reduced autophagic flux and low basal and induced levels of p62. Conversely, HSF1-deficient cells have increased autophagic flux under both basal as well as HBB2-induced conditions, accompanied by increased p62 levels. Our findings suggest that NRF2 and HSF1 have opposing roles during autophagy, and illustrate the existence of tight mechanistic links between the cellular stress responses.
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Affiliation(s)
- Sharadha Dayalan Naidu
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Dina Dikovskaya
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Egle Gaurilcikaite
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
- Wolfson Centre for Age-Related Diseases, King's College London, London, UK
| | - Elena V Knatko
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Zachary R Healy
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
- Department of Pulmonary and Critical Care Medicine and Department of Internal Medicine, Duke University Hospital, Durham, NC, 27705, USA
| | - Hema Mohan
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Glenn Koh
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Axel Laurell
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Graeme Ball
- Dundee Imaging Facility, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - David Olagnier
- Lady Davis Institute-Jewish General Hospital, McGill University, Division of Experimental Medicine, Montreal, QC, Canada
- Department of Biomedicine, Aarhus Research Center for Innate Immunology, Aarhus University, Aarhus, 8000, Denmark
| | - Laureano de la Vega
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK
| | - Ian G Ganley
- The Medical Research Council (MRC) Protein Phosphorylation and Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dundee DD1 5EH, Scotland, UK
| | - Paul Talalay
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Albena T Dinkova-Kostova
- Jacqui Wood Cancer Centre, Division of Cancer Research, School of Medicine, University of Dundee, Dundee, DD1 9SY, Scotland, UK.
- Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
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94
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3,5-Bis(2-fluorobenzylidene)-4-piperidone induce reactive oxygen species-mediated apoptosis in A549 cells. Med Chem Res 2017. [DOI: 10.1007/s00044-017-2056-x] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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95
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Kapche DWFG, Lekane NM, Kulabas SS, Ipek H, Tok TT, Ngadjui BT, Demirtas I, Tumer TB. Aryl benzofuran derivatives from the stem bark of Calpocalyx dinklagei attenuate inflammation. PHYTOCHEMISTRY 2017; 141:70-79. [PMID: 28577435 DOI: 10.1016/j.phytochem.2017.05.007] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/10/2017] [Revised: 05/15/2017] [Accepted: 05/18/2017] [Indexed: 06/07/2023]
Abstract
Calpocalyx dinklagei Harms (Fabaceae) is a tropical medicinal tree, which is indigenous to Western Africa. A phytochemical study of this local plant species from its stem bark has led to the isolation of two previously undescribed aryl benzofuran derivatives, named dinklagein A and B, together with eight known compounds. Their chemical structures were elucidated by use of extensive spectroscopic methods (IR, HREI-MS and 1D and 2D NMR). Among all isolates, dinklagein A displayed remarkably potent inhibitory activity against the production of nitric oxide (NO) in the lipopolysaccharide (LPS) induced RAW264.7 macrophages. SAR and molecular docking investigations on iNOS and previously undescribed compounds (dinklagein A and B) supported experimental data. Furthermore, dinklagein A dose dependently suppressed the LPS-stimulated iNOS expression at both mRNA and protein level. It also attenuated IL-1β release, mRNA expressions of IL-1β and COX-2 at low doses. These results suggest that dinklagein A can be developed as natural, multi-target agent against several inflammatory diseases.
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Affiliation(s)
- Deccaux W F G Kapche
- University of Yaoundé I, P. O. Box +(237) 47, Yaoundé, Cameroon; Çankırı Karatekin University, Faculty of Sciences, Department of Chemistry, 18200, Çankırı, Turkey.
| | - Nadège M Lekane
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P. O. Box +(237) 812, Yaoundé, Cameroon
| | - Seda S Kulabas
- Çanakkale Onsekiz Mart University, Faculty of Arts and Sciences, Department of Molecular Biology and Genetics, 17100, Çanakkale, Turkey
| | - Hande Ipek
- Çanakkale Onsekiz Mart University, Faculty of Arts and Sciences, Department of Molecular Biology and Genetics, 17100, Çanakkale, Turkey
| | - Tugba T Tok
- Gaziantep University, Faculty of Arts and Sciences, Department of Chemistry, 27310, Şehitkamil, Gaziantep, Turkey.
| | - Bonaventure T Ngadjui
- Department of Organic Chemistry, Faculty of Science, University of Yaoundé I, P. O. Box +(237) 812, Yaoundé, Cameroon.
| | - Ibrahim Demirtas
- Çankırı Karatekin University, Faculty of Sciences, Department of Chemistry, 18200, Çankırı, Turkey.
| | - Tugba B Tumer
- Çanakkale Onsekiz Mart University, Faculty of Arts and Sciences, Department of Molecular Biology and Genetics, 17100, Çanakkale, Turkey.
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96
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Design, synthesis, and evaluation of curcumin derivatives as Nrf2 activators and cytoprotectors against oxidative death. Eur J Med Chem 2017; 134:72-85. [DOI: 10.1016/j.ejmech.2017.04.008] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2017] [Revised: 04/01/2017] [Accepted: 04/04/2017] [Indexed: 12/30/2022]
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97
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Zhuang C, Zhang W, Sheng C, Zhang W, Xing C, Miao Z. Chalcone: A Privileged Structure in Medicinal Chemistry. Chem Rev 2017; 117:7762-7810. [PMID: 28488435 PMCID: PMC6131713 DOI: 10.1021/acs.chemrev.7b00020] [Citation(s) in RCA: 757] [Impact Index Per Article: 108.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Privileged structures have been widely used as an effective template in medicinal chemistry for drug discovery. Chalcone is a common simple scaffold found in many naturally occurring compounds. Many chalcone derivatives have also been prepared due to their convenient synthesis. These natural products and synthetic compounds have shown numerous interesting biological activities with clinical potentials against various diseases. This review aims to highlight the recent evidence of chalcone as a privileged scaffold in medicinal chemistry. Multiple aspects of chalcone will be summarized herein, including the isolation of novel chalcone derivatives, the development of new synthetic methodologies, the evaluation of their biological properties, and the exploration of the mechanisms of action as well as target identification. This review is expected to be a comprehensive, authoritative, and critical review of the chalcone template to the chemistry community.
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Affiliation(s)
- Chunlin Zhuang
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Wen Zhang
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Chunquan Sheng
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
| | - Wannian Zhang
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
- School of Pharmacy, Ningxia Medical University, 1160 Shengli Street, Yinchuan 750004, China
| | - Chengguo Xing
- Department of Medicinal Chemistry, College of Pharmacy, University of Florida, 1345 Center Drive,
Gainesville, Florida 32610, United States
| | - Zhenyuan Miao
- School of Pharmacy, Second Military Medical University, 325 Guohe Road, Shanghai 200433, China
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98
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Synthesis and pharmacological properties of chalcones: a review. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-2977-5] [Citation(s) in RCA: 57] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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99
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Abstract
The activation of nuclear factor erythroid 2-related factor 2 (Nrf2) is the most important cellular defense mechanisms against oxidative attack. BTB and CNC homology-1 (Bach1), like Kelch-like ECH-associated protein 1 (Keap1), is one of a negative regulator of Nrf2 that control antioxidant response elements (ARE)-dependent gene expressions. In the current study, we found that quinones show greater capacity than hydroquinones in nuclear Bach1 export, as well as ubiquitin-dependent Bach1 degradation in our experimental time frame. Consistently, quinones are easier than hydroquinones in Nrf2 activation and ARE-driven antioxidant protein expressions. Considering the redox cycling potential of quinone-hydroquinone couple, we investigated the effect of transit metal oxidation on the regulation of Nrf2 activity. As shown, Fe3+ enhanced hydroquinone-induced Nrf2 activation and ARE-driven gene expressions, suggesting quinones rather than hydroquinone activate Nrf2 through Bach1 arylation. Taking together, our investigation illustrated that the electrophilic character of quinones ensure their conjugation with Bach1, which is important for the downregulation of Bach1 and the upregulation of Nrf2 signaling.
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100
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Heme Oxygenase-1, a Key Enzyme for the Cytoprotective Actions of Halophenols by Upregulating Nrf2 Expression via Activating Erk1/2 and PI3K/Akt in EA.hy926 Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:7028478. [PMID: 28694915 PMCID: PMC5488237 DOI: 10.1155/2017/7028478] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/24/2016] [Revised: 02/23/2017] [Accepted: 04/12/2017] [Indexed: 02/07/2023]
Abstract
Increasing evidence has demonstrated that heme oxygenase-1 (HO-1) is a key enzyme triggered by cellular stress, exhibiting cytoprotective, antioxidant, and anti-inflammatory abilities. Previously, we prepared a series of novel active halophenols possessing strong antioxidant activities in vitro and in vivo. In the present study, we demonstrated that these halophenols exhibited significant protective effects against H2O2-induced injury in EA.hy926 cells by inhibition of apoptosis and ROS and TNF-α production, as well as induction of the upregulation of HO-1, the magnitude of which correlated with their cytoprotective actions. Further experiments which aimed to determine the mechanistic basis of these actions indicated that the halophenols induced the activation of Nrf2, Erk1/2, and PI3K/Akt without obvious effects on the phosphorylation of p38, JNK, or the expression of PKC-δ. This was validated with the use of PD98059 and Wortmannin, specific inhibitors of Erk1/2 and PI3K, respectively. Overall, our study is the first to demonstrate that the cytoprotective actions of halophenols involve their antiapoptotic, antioxidant, and anti-inflammatory abilities, which are mediated by the upregulation of Nrf2-dependent HO-1 expression and reductions in ROS and TNF-α generation via the activation of Erk1/2 and PI3K/Akt in EA.hy926 cells. HO-1 may thus be an important potential target for further research into the cytoprotective actions of halophenols.
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