1
|
García-Santos WH, Mayorquín-Torres MC, Maldonado-Domínguez M, Medina-Campos ON, Pedraza-Chaverri J, Iglesias-Arteaga MA. Mechanistic Insights on Pd-Catalyzed Three-Component Reactions of Alkynols, Methyl Orthoformate, and Salicylaldehyde Derivatives. Application to the Synthesis of Steroid Chroman Ketals and Spiroketals with Antioxidant Activity. J Org Chem 2023; 88:14860-14873. [PMID: 37877558 DOI: 10.1021/acs.joc.3c00857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
Contrary to our previous report in which a Pd-catalyzed three-component reaction of a steroid alkynol, trimethyl orthoformate, and salicylaldehyde exclusively produced chroman ketals, the same reaction employing 2,5-dihydroxysalicylaldehyde led to a mixture of a chroman ketal and a spiroketal. Provided that both courses of the reaction imply a 4 + 2 inverse demand cycloaddition between an o-quinone methide and an enol ether, density functional theory calculations revealed that the chroman ketal/spiroketal selectivity is governed by both, the rate of the formation of the o-quinone methide and the isomerization of the initially produced exocyclic enol ether─that led to the spiroketal─to its endocyclic partner that produces the chroman ketal. Remarkably, Lewis catalysis is central to the observed reactivity, and the availability of plausible catalytic species controls the overall chemoselectivity. The methodology herein applied and scrutinized enriches the palette of reactions, leading to increased molecular complexity, as demonstrated in the obtained products, whose antioxidant activity and detailed NMR characterization are presented.
Collapse
Affiliation(s)
- William H García-Santos
- Facultad de Química, Universidad Nacional Autónoma de México, CDMX, 04510 Mexico City, Mexico
| | | | | | - Omar N Medina-Campos
- Facultad de Química, Universidad Nacional Autónoma de México, CDMX, 04510 Mexico City, Mexico
| | - Jose Pedraza-Chaverri
- Facultad de Química, Universidad Nacional Autónoma de México, CDMX, 04510 Mexico City, Mexico
| | | |
Collapse
|
2
|
Cotter CJ, Wright AJ, Romanov AV, Graf TN, Whisnant ED, Flores-Bocanegra L, Doldron MS, Oberlies NH, Jia Z, Ligaba-Osena A. Evaluating the Antioxidant Properties of the Ancient-Crop Tef ( Eragrostis tef) Grain Extracts in THP-1 Monocytes. Antioxidants (Basel) 2023; 12:1561. [PMID: 37627557 PMCID: PMC10451390 DOI: 10.3390/antiox12081561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2023] [Revised: 07/22/2023] [Accepted: 07/31/2023] [Indexed: 08/27/2023] Open
Abstract
Tef (Eragrostis tef) is an orphan crop that is widely grown in East Africa, primarily in Ethiopia as a staple crop. It is becoming popular in the Western world owing to its nutritious and gluten-free grains and the forage quality of its biomass. Tef is also considered to have a high antioxidant capacity based on cell-free studies. However, the antioxidant activity of tef has never been validated using a physiologically relevant cell model. The purpose of this study was to investigate the antioxidant capacity of tef grain extracts using a mammalian cell model. We hypothesized that the tef grain extracts are capable of modulating the cellular antioxidant response via the modulation of glutathione (GSH) biosynthetic pathways. Therefore, we evaluated the antioxidant activity of purified tef grain extracts in the human acute monocytic leukemia (THP-1) cell line. Our findings revealed that the organic fraction of grain extracts increased the cellular GSH level, which was more evident for brown-colored tef than the ivory variety. Moreover, a brown-tef fraction increased the expressions of GSH-pathway genes, including γ-glutamate cysteine ligase catalytic (GCLC) and modifier (GCLM) subunits and glutathione reductase (GR), an enzyme that plays a key role in GSH biosynthesis, suggesting that tef extracts may modulate GSH metabolism. Several compounds were uniquely identified via mass spectrometry (MS) in GSH-modulating brown-tef samples, including 4-oxo-β-apo-13-carotenone, γ-linolenic acid (methyl ester), 4,4'-(2,3-dimethyl-1,4-butanediyl)bis-phenol (also referred to as 8,8'-lignan-4,4'-diol), and (3β)-3-[[2-[4-(Acetylamino)phenoxy]acetyl]oxy]olean-12-en-28-oic acid. Tef possesses antioxidant activity due to the presence of phytochemicals that can act as direct antioxidants, as well as modulators of antioxidant-response genes, indicating its potential role in alleviating diseases triggered by oxidative stresses. To the best of our knowledge, this is the first report revealing the antioxidant ability of tef extracts in a physiologically relevant human cell model.
Collapse
Affiliation(s)
- Christopher J. Cotter
- Laboratory of Plant Molecular Biology and Biotechnology, Department of Biology, The University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Allison J. Wright
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Anastasia V. Romanov
- Laboratory of Plant Molecular Biology and Biotechnology, Department of Biology, The University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Tyler N. Graf
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Eric D. Whisnant
- Laboratory of Plant Molecular Biology and Biotechnology, Department of Biology, The University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Laura Flores-Bocanegra
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Megan S. Doldron
- Laboratory of Molecular Toxicology, Department of Biology, The University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Nicholas H. Oberlies
- Department of Chemistry and Biochemistry, The University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Zhenquan Jia
- Laboratory of Molecular Toxicology, Department of Biology, The University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| | - Ayalew Ligaba-Osena
- Laboratory of Plant Molecular Biology and Biotechnology, Department of Biology, The University of North Carolina at Greensboro, Greensboro, NC 27412, USA
| |
Collapse
|
3
|
Culhuac EB, Maggiolino A, Elghandour MMMY, De Palo P, Salem AZM. Antioxidant and Anti-Inflammatory Properties of Phytochemicals Found in the Yucca Genus. Antioxidants (Basel) 2023; 12:574. [PMID: 36978823 PMCID: PMC10044844 DOI: 10.3390/antiox12030574] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2023] [Revised: 02/19/2023] [Accepted: 02/22/2023] [Indexed: 03/02/2023] Open
Abstract
The Yucca genus encompasses about 50 species native to North America. Species within the Yucca genus have been used in traditional medicine to treat pathologies related to inflammation. Despite its historical use and the popular notion of its antioxidant and anti-inflammatory properties, there is a limited amount of research on this genus. To better understand these properties, this work aimed to analyze phytochemical composition through documentary research. This will provide a better understanding of the molecules and the mechanisms of action that confer such antioxidant and anti-inflammatory properties. About 92 phytochemicals present within the genus have reported antioxidant or anti-inflammatory effects. It has been suggested that the antioxidant and anti-inflammatory properties are mainly generated through its free radical scavenging activity, the inhibition of arachidonic acid metabolism, the decrease in TNF-α (Tumor necrosis factor-α), IL-6 (Interleukin-6), iNOS (Inducible nitric oxide synthase), and IL-1β (Interleukin 1β) concentration, the increase of GPx (Glutathione peroxidase), CAT (Catalase), and SOD (Superoxide dismutase) concentration, and the inhibition of the MAPK (Mitogen-Activated Protein Kinase), and NF-κB (Nuclear factor kappa B), and the activation of the Nrf2 (Nuclear factor erythroid 2-related factor) signaling pathway. These studies provide evidence of its use in traditional medicine against pathologies related to inflammation. However, more models and studies are needed to properly understand the activity of most plants within the genus, its potency, and the feasibility of its use to help manage or treat chronic inflammation.
Collapse
Affiliation(s)
- Erick Bahena Culhuac
- Facultad de Ciencias, Universidad Autónoma del Estado de México, Toluca 50000, Estado de México, Mexico
| | - Aristide Maggiolino
- Department of Veterinary Medicine, University of Bari A. Moro, 70010 Valenzano, Italy
| | - Mona M. M. Y. Elghandour
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Toluca 50000, Estado de México, Mexico
| | - Pasquale De Palo
- Department of Veterinary Medicine, University of Bari A. Moro, 70010 Valenzano, Italy
| | - Abdelfattah Z. M. Salem
- Facultad de Medicina Veterinaria y Zootecnia, Universidad Autónoma del Estado de México, Toluca 50000, Estado de México, Mexico
| |
Collapse
|
4
|
Role of Nrf2 in aging, Alzheimer's and other neurodegenerative diseases. Ageing Res Rev 2022; 82:101756. [PMID: 36243357 DOI: 10.1016/j.arr.2022.101756] [Citation(s) in RCA: 24] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 09/14/2022] [Accepted: 10/09/2022] [Indexed: 01/31/2023]
Abstract
Nuclear Factor-Erythroid Factor 2 (Nrf2) is an important transcription factor that regulates the expression of large number of genes in healthy and disease states. Nrf2 is made up of 605 amino acids and contains 7 conserved regions known as Nrf2-ECH homology domains. Nrf2 regulates the expression of several key components of oxidative stress, mitochondrial biogenesis, mitophagy, autophagy and mitochondrial function in all organs of the human body, in the peripheral and central nervous systems. Mounting evidence also suggests that altered expression of Nrf2 is largely involved in aging, neurodegenerative diseases, including Alzheimer's disease, Parkinson's disease, Huntington's diseases, Amyotrophic lateral sclerosis, Stroke, Multiple sclerosis and others. The purpose of this article is to detail the essential role of Nrf2 in oxidative stress, antioxidative defense, detoxification, inflammatory responses, transcription factors, proteasomal and autophagic/mitophagic degradation, and metabolism in aging and neurodegenerative diseases. This article also highlights the Nrf2 structural and functional activities in healthy and disease states, and also discusses the current status of Nrf2 research and therapeutic strategies to treat aging and neurodegenerative diseases.
Collapse
|
5
|
Osmakov DI, Kalinovskii AP, Belozerova OA, Andreev YA, Kozlov SA. Lignans as Pharmacological Agents in Disorders Related to Oxidative Stress and Inflammation: Chemical Synthesis Approaches and Biological Activities. Int J Mol Sci 2022; 23:6031. [PMID: 35682715 PMCID: PMC9181380 DOI: 10.3390/ijms23116031] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 05/17/2022] [Accepted: 05/24/2022] [Indexed: 02/06/2023] Open
Abstract
Plant lignans exhibit a wide range of biological activities, which makes them the research objects of potential use as therapeutic agents. They provide diverse naturally-occurring pharmacophores and are available for production by chemical synthesis. A large amount of accumulated data indicates that lignans of different structural groups are apt to demonstrate both anti-inflammatory and antioxidant effects, in many cases, simultaneously. In this review, we summarize the comprehensive knowledge about lignan use as a bioactive agent in disorders associated with oxidative stress and inflammation, pharmacological effects in vitro and in vivo, molecular mechanisms underlying these effects, and chemical synthesis approaches. This article provides an up-to-date overview of the current data in this area, available in PubMed, Scopus, and Web of Science databases, screened from 2000 to 2022.
Collapse
Affiliation(s)
- Dmitry I. Osmakov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia; (D.I.O.); (A.P.K.); (O.A.B.); (Y.A.A.)
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia
| | - Aleksandr P. Kalinovskii
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia; (D.I.O.); (A.P.K.); (O.A.B.); (Y.A.A.)
| | - Olga A. Belozerova
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia; (D.I.O.); (A.P.K.); (O.A.B.); (Y.A.A.)
| | - Yaroslav A. Andreev
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia; (D.I.O.); (A.P.K.); (O.A.B.); (Y.A.A.)
- Institute of Molecular Medicine, Sechenov First Moscow State Medical University, 119991 Moscow, Russia
| | - Sergey A. Kozlov
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry, Russian Academy of Sciences, ul. Miklukho-Maklaya 16/10, 117997 Moscow, Russia; (D.I.O.); (A.P.K.); (O.A.B.); (Y.A.A.)
| |
Collapse
|
6
|
Shpakova V, Rukoyatkina N, Al Arawe N, Prilepskaya A, Kharazova A, Sharina I, Gambaryan S, Martin E. ML355 Modulates Platelet Activation and Prevents ABT-737 Induced Apoptosis in Platelets. J Pharmacol Exp Ther 2022; 381:164-175. [PMID: 35197320 PMCID: PMC9073945 DOI: 10.1124/jpet.121.000973] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2021] [Accepted: 02/05/2022] [Indexed: 01/14/2023] Open
Abstract
12-lipoxigenase (12-LOX) is implicated in regulation of platelet activation processes and can be a new promising target for antiplatelet therapy. However, investigations of 12-LOX were restricted by the lack of specific and potent 12-LOX inhibitors and by controversial data concerning the role of 12-LOX metabolites in platelet functions. A novel specific 12-LOX inhibitor ML355 was shown to inhibit platelet aggregation without adverse side effects on hemostasis; however, the molecular mechanisms of its action on platelets are poorly understood. Here, we showed that ML355 inhibited platelet activation induced by thrombin or thromboxane A2, but not by collagen-related peptide. ML355 blocked protein kinase B, phosphoinositide 3-kinase, and extracellular signal-regulated kinase, but not p38 kinase, spleen tyrosine kinase (Syk), or phospholipase Cγ2 phosphorylation in activated platelets. The main inhibitory effect of low doses of ML355 (1-20 μM) on thrombin activated platelets was mediated by the decrease in reactive oxygen species level, whereas high doses of ML355 (50 μM) caused cyclic adenosine monophosphate activation. ML355 did not affect the activity of nitric oxide-dependent soluble guanylyl cyclase, nor did it affect the relaxation of preconstricted aortic rings in mice. ML355 itself did not affect platelet viability, but at 50 μM dose blocked caspase-dependent apoptosis induced by B-cell lymphoma II inhibitor ABT-737. SIGNIFICANCE STATEMENT: The current paper provides novel and original data concerning molecular mechanisms of 12-LOX inhibitor ML355 action on platelets. These data reveal antiplatelet and protective effects of ML355 on platelets and may be of importance for both antiplatelet and anticancer therapy.
Collapse
Affiliation(s)
- Valentina Shpakova
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia (V.S., N.R., S.G.); Saint Petersburg State University, Saint Petersburg, Russia (N.A.A., A.P., A.K.); and Department of Internal Medicine, Division of Cardiology, University of Texas Houston Medical School, Houston, Texas (I.S., E.M.)
| | - Natalia Rukoyatkina
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia (V.S., N.R., S.G.); Saint Petersburg State University, Saint Petersburg, Russia (N.A.A., A.P., A.K.); and Department of Internal Medicine, Division of Cardiology, University of Texas Houston Medical School, Houston, Texas (I.S., E.M.)
| | - Nada Al Arawe
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia (V.S., N.R., S.G.); Saint Petersburg State University, Saint Petersburg, Russia (N.A.A., A.P., A.K.); and Department of Internal Medicine, Division of Cardiology, University of Texas Houston Medical School, Houston, Texas (I.S., E.M.)
| | - Anna Prilepskaya
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia (V.S., N.R., S.G.); Saint Petersburg State University, Saint Petersburg, Russia (N.A.A., A.P., A.K.); and Department of Internal Medicine, Division of Cardiology, University of Texas Houston Medical School, Houston, Texas (I.S., E.M.)
| | - Alexandra Kharazova
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia (V.S., N.R., S.G.); Saint Petersburg State University, Saint Petersburg, Russia (N.A.A., A.P., A.K.); and Department of Internal Medicine, Division of Cardiology, University of Texas Houston Medical School, Houston, Texas (I.S., E.M.)
| | - Iraida Sharina
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia (V.S., N.R., S.G.); Saint Petersburg State University, Saint Petersburg, Russia (N.A.A., A.P., A.K.); and Department of Internal Medicine, Division of Cardiology, University of Texas Houston Medical School, Houston, Texas (I.S., E.M.)
| | - Stepan Gambaryan
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia (V.S., N.R., S.G.); Saint Petersburg State University, Saint Petersburg, Russia (N.A.A., A.P., A.K.); and Department of Internal Medicine, Division of Cardiology, University of Texas Houston Medical School, Houston, Texas (I.S., E.M.)
| | - Emil Martin
- Sechenov Institute of Evolutionary Physiology and Biochemistry of the Russian Academy of Sciences, Saint Petersburg, Russia (V.S., N.R., S.G.); Saint Petersburg State University, Saint Petersburg, Russia (N.A.A., A.P., A.K.); and Department of Internal Medicine, Division of Cardiology, University of Texas Houston Medical School, Houston, Texas (I.S., E.M.)
| |
Collapse
|
7
|
Mehta R, Bhandari R, Kuhad A. Exploring nordihydroguaretic acid (NDGA) as a plausible neurotherapeutic in the experimental paradigm of autism spectrum disorders targeting nitric oxide pathway. Metab Brain Dis 2021; 36:1833-1857. [PMID: 34363573 DOI: 10.1007/s11011-021-00811-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/04/2020] [Accepted: 07/26/2021] [Indexed: 12/14/2022]
Abstract
The present study investigates the neuro-protective ability of nordihydroguaretic acid (NDGA) in the experimental paradigm of autism spectrum disorders (ASD) and further decipher the nitric oxide pathway's role in its proposed action. An intracerebroventricular infusion of 4 μl of 1 M PPA was given in the lateral ventricle's anterior region to induce autism-like phenotype in male rats. Oral administration of NDGA (5, 10 & 15 mg/kg) was initiated from the 3rd day lasting till the 28th day. L-NAME (50 mg/kg) and L-Arginine (800 mg/kg) were also given individually and combined to explore NDGA's ability to act via the nitric oxide pathway. Behavior tests for sociability, stereotypy, anxiety, depression, novelty, repetitive and perseverative behavior were carried out between the 14th and 28th day. On the 29th day, animals were sacrificed, and mitochondrial complexes and oxidative stress parameters were evaluated. We also estimated the levels of neuroinflammatory and apoptotic markers such as TNF-α, IL-6, NF-κB, IFN-γ, HSP-70, and caspase-3. To assess the involvement of the nitric oxide pathway, levels of iNOS and homocysteine were estimated. Treatment with NDGA significantly restored behavioral, biochemical, neurological, and molecular deficits. Hence, NDGA can be used as a neurotherapeutic agent in ASD. Targeting nitric oxide pathway mediated oxidative & nitrosative stress responsible for behavioral, biochemical, and molecular alterations via modulating nitric oxide pathway. The evaluation of iNOS and homocysteine levels conclusively establishes the nitric oxide pathway's role in causing behavioral, biochemical & molecular deficits and NDGA's beneficial effect in restoring these alterations.
Collapse
Affiliation(s)
- Rishab Mehta
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, UGC-Centre of Advanced Study, Panjab University, Chandigarh, 160 014, India
| | - Ranjana Bhandari
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, UGC-Centre of Advanced Study, Panjab University, Chandigarh, 160 014, India.
| | - Anurag Kuhad
- Pharmacology Research Laboratory, University Institute of Pharmaceutical Sciences, UGC-Centre of Advanced Study, Panjab University, Chandigarh, 160 014, India.
| |
Collapse
|
8
|
Upadhayay S, Mehan S. Targeting Nrf2/HO-1 anti-oxidant signaling pathway in the progression of multiple sclerosis and influences on neurological dysfunctions. BRAIN DISORDERS 2021. [DOI: 10.1016/j.dscb.2021.100019] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
|
9
|
Trajano GS, Blazevich AJ. Static Stretching Reduces Motoneuron Excitability: The Potential Role of Neuromodulation. Exerc Sport Sci Rev 2021; 49:126-132. [PMID: 33720914 PMCID: PMC7967995 DOI: 10.1249/jes.0000000000000243] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/06/2022]
Abstract
Prolonged static muscle stretching transiently reduces maximal muscle force, and this force loss has a strong neural component. In this review, we discuss the evidence suggesting that stretching reduces the motoneuron's ability to amplify excitatory drive. We propose a hypothetical model in which stretching causes physiological relaxation, reducing the brainstem-derived neuromodulatory drive necessary to maximize motoneuron discharge rates.
Collapse
Affiliation(s)
- Gabriel S Trajano
- School of Exercise and Nutrition Sciences, Faculty of Health, Queensland University of Technology, Brisbane
| | - Anthony J Blazevich
- Centre for Exercise and Sports Science Research, School of Medical and Health Sciences, Edith Cowan University, Joondalup, Australia
| |
Collapse
|
10
|
Moreno MA, Zampini IC, Isla MI. Antifungal, anti-inflammatory and antioxidant activity of bi-herbal mixtures with medicinal plants from Argentinean highlands. JOURNAL OF ETHNOPHARMACOLOGY 2020; 253:112642. [PMID: 32035220 DOI: 10.1016/j.jep.2020.112642] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 01/31/2020] [Accepted: 01/31/2020] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Argentinean medicinal plants such as Larrea divaricata Cav., Larrea cuneifolia Cav., Larrea nitida Cav., Zuccagnia punctata Cav. and Tetraglochin andina Ciald. are used alone and in combination in traditional medicine by inhabitants from northwestern Argentina to solve mycosis, vaginal infections, gastrointestinal, respiratory, and inflammatory processes. AIM OF THE STUDY To assess the effect of interactions between hydroalcoholic extracts of these five species of medicinal plants against yeast strains isolated from vaginal infections, select the most active mixtures and evaluate anti-inflammatory and antioxidant activities. MATERIAL AND METHODS Synergy between the plant extracts was studied by using a broth microdilution assay by means of the checkerboard method against Saccharomyces cerevisiae, Candida albicans, and non albicans strains. The inhibitory effect on lipoxygenase and the antioxidant capacity in cell-free and cell systems were studied. The chemical profile was evaluated by qualitative and quantitative screening, whereas chemical markers were quantified by HPLC-DAD. RESULTS A synergistic antifungal effect was observed in some binary combinations. Z. punctata/L. divaricata, Z. punctata/L. cuneifolia, and Z. punctata/L. nitida were the most active mixtures. Nordihydroguaiaretic acid and 2',4'-dihydroxychalcone, two antifungal compounds, present in these extracts, were identified and quantified by HPLC-DAD. Both single extracts and bi-herbal mixtures showed antioxidant activity (in cellular and in cell-free systems) and were active on pro-inflammatory enzymes (LOX). CONCLUSIONS Our results indicated that the most active combinations of these species extracts could be useful in the treatment of vaginal infectious diseases caused by Saccharomyces cerevisiae and Candida spp. strains and in associated oxidative and inflammatory processes, supporting its traditional use. In addition, the results highlighted the phyto-therapeutic potential of total phytochemical compounds present in these medicinal plants.
Collapse
Affiliation(s)
- María Alejandra Moreno
- Laboratorio de Investigación de Productos Naturales (LIPRON), Instituto de Bioprospección y Fisiología Vegetal (INBIOFIV-CONICET-UNT), Argentina.
| | - Iris Catiana Zampini
- Laboratorio de Investigación de Productos Naturales (LIPRON), Instituto de Bioprospección y Fisiología Vegetal (INBIOFIV-CONICET-UNT), Argentina; Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, San Lorenzo 1469, San Miguel de Tucumán, Tucumán, Argentina.
| | - María Inés Isla
- Laboratorio de Investigación de Productos Naturales (LIPRON), Instituto de Bioprospección y Fisiología Vegetal (INBIOFIV-CONICET-UNT), Argentina; Facultad de Ciencias Naturales e Instituto Miguel Lillo, Universidad Nacional de Tucumán, San Lorenzo 1469, San Miguel de Tucumán, Tucumán, Argentina.
| |
Collapse
|
11
|
Manda G, Rojo AI, Martínez-Klimova E, Pedraza-Chaverri J, Cuadrado A. Nordihydroguaiaretic Acid: From Herbal Medicine to Clinical Development for Cancer and Chronic Diseases. Front Pharmacol 2020; 11:151. [PMID: 32184727 PMCID: PMC7058590 DOI: 10.3389/fphar.2020.00151] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Accepted: 02/05/2020] [Indexed: 12/11/2022] Open
Abstract
Nordihydroguaiaretic acid (NDGA) is a phenolic lignan obtained from Larrea tridentata, the creosote bush found in Mexico and USA deserts, that has been used in traditional medicine for the treatment of numerous diseases such as cancer, renal, cardiovascular, immunological, and neurological disorders, and even aging. NDGA presents two catechol rings that confer a very potent antioxidant activity by scavenging oxygen free radicals and this may explain part of its therapeutic action. Additional effects include inhibition of lipoxygenases (LOXs) and activation of signaling pathways that impinge on the transcription factor Nuclear Factor Erythroid 2-related Factor (NRF2). On the other hand, the oxidation of the catechols to the corresponding quinones my elicit alterations in proteins and DNA that raise safety concerns. This review describes the current knowledge on NDGA, its targets and side effects, and its synthetic analogs as promising therapeutic agents, highlighting their mechanism of action and clinical projection towards therapy of neurodegenerative, liver, and kidney disease, as well as cancer.
Collapse
Affiliation(s)
- Gina Manda
- Department Cellular and Molecular Medicine, Victor Babes National Institute of Pathology, Bucharest, Romania
| | - Ana I Rojo
- Department of Biochemistry, Faculty of Medicine, Autonomous University of Madrid, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Investigación Sanitaria la Paz (idiPAZ), Instituto de Investigaciones Biomédicas "Alberto Sols" UAM-CSIC, Madrid, Spain
| | - Elena Martínez-Klimova
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, Mexico
| | - José Pedraza-Chaverri
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, Mexico
| | - Antonio Cuadrado
- Department Cellular and Molecular Medicine, Victor Babes National Institute of Pathology, Bucharest, Romania.,Department of Biochemistry, Faculty of Medicine, Autonomous University of Madrid, Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), Instituto de Investigación Sanitaria la Paz (idiPAZ), Instituto de Investigaciones Biomédicas "Alberto Sols" UAM-CSIC, Madrid, Spain
| |
Collapse
|
12
|
Lin S, Zhang Q, Li S, Zhang T, Wang L, Qin X, Zhang M, Shi S, Cai X. Antioxidative and Angiogenesis-Promoting Effects of Tetrahedral Framework Nucleic Acids in Diabetic Wound Healing with Activation of the Akt/Nrf2/HO-1 Pathway. ACS APPLIED MATERIALS & INTERFACES 2020; 12:11397-11408. [PMID: 32083455 DOI: 10.1021/acsami.0c00874] [Citation(s) in RCA: 59] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Shiyu Lin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Qi Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Songhang Li
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Tao Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Lang Wang
- Department of Oral Implantology, The Affiliated Stomatology Hospital of Southwest Medical University, Luzhou 646000, P. R. China
| | - Xin Qin
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Mei Zhang
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Sirong Shi
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| | - Xiaoxiao Cai
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu 610041, P. R. China
| |
Collapse
|
13
|
Wang X, Yuan ZL. Activation of Nrf2/HO-1 pathway protects retinal ganglion cells from a rat chronic ocular hypertension model of glaucoma. Int Ophthalmol 2019; 39:2303-2312. [PMID: 30637543 DOI: 10.1007/s10792-018-01071-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Accepted: 12/31/2018] [Indexed: 01/28/2023]
Abstract
OBJECTIVE The objective of this work was to find out the effects of nuclear factor erythroid 2-related factor/heme oxygenase-1 (Nrf2/HO-1) pathway on retinal ganglion cell (RGC) injury in glaucoma. METHODS The chronic ocular hypertension (COH) rat models of glaucoma were constructed, and intraocular pressure (IOP) and RGC numbers were detected at different time points. Additionally, rats were divided into normal group (normal control rats), model group (COH model rats), and model + tBHQ group (COH model rats treated with Nrf activator, tBHQ). RGC apoptosis was detected by using TUNEL staining, and the expressions of Nrf2/HO-1 were detected by qRT-PCR and western blotting. RESULTS COH model rats showed significant IOP elevation and the increased mRNA and protein expressions of Nrf2 and HO-1 from 1 to 6 weeks after operation, with the evidently decreased RGC numbers at 4 weeks and 6 weeks after operation (all P < 0.05). Besides, rats in the model group had increased apoptosis index (AI) of RGCs and the elevated mRNA and protein expressions of Nrf2/HO-1 with remarkably reduced RGC numbers when compared with normal control rats, but the model rats treated with tBHQ exhibited an apparent decrease in AI of RGCs, as well as remarkable increases in RGC numbers and the mRNA and protein expression of Nrf2/HO-1 (all P < 0.05). CONCLUSION Activation of Nrf2/HO-1 pathway significantly reduced the apoptosis and injury of RGCs in rats with chronic ocular hypertension (COH), thereby protecting RGCs in glaucoma, which could be a promising clinical target to prevent RGC degeneration in glaucoma.
Collapse
Affiliation(s)
- Xue Wang
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, 101 Longmian Avenue, Jiangning District, Nanjing, 211166, China.,Department of Ophthalmology, The First People's Hospital of Lianyungang, Lianyungang, 222000, China
| | - Zhi-Lan Yuan
- Department of Ophthalmology, The First Affiliated Hospital of Nanjing Medical University, 101 Longmian Avenue, Jiangning District, Nanjing, 211166, China.
| |
Collapse
|
14
|
Vázquez-Cervantesa GI, Villaseñor-Aguayoa K, Hernández-Damiána J, Aparicio-Trejoa OE, Medina-Camposa ON, López-Marureb R, Pedraza-Chaverria J. Antitumor Effects of Nordihydroguaiaretic Acid (NDGA) in Bladder T24 Cancer Cells are Related to Increase in ROS Production and Mitochondrial Leak Respiration. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801301128] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
The aim of this study was to evaluate the effect of nordihydroguaiaretic acid (NDGA) on tumor bladder T24 cells. Bladder cancer T24 cells were cultured on Dulbecco's Modified Eagle Medium in presence of NDGA. Cell viability and apoptosis were evaluated after 24, 48 and 72 h by using fluorescein diacetate (FDA) and Alexa fluor 488 annexin-V/propidium iodide solution, respectively. To determine the mitochondrial effects of NDGA (0-24 h), reactive oxygen species (ROS) levels by dihydroethidium fluorescence, mitochondrial membrane potential (ΔΨm) by 5,5’,6,6'-tetrachloro-1,1’,3,3'-tetraethyl-imidacarbocyanine iodide (JC-1) dual fluorescence and cellular respiration states by high resolution respirometry were evaluated. It was found that NDGA reduced T24 cell viability after 72 h of incubation in a concentration-dependent manner and apoptosis increased at 48 h. Furthermore, 20 μM NDGA increased ROS levels, decreased ΔΨm and promoted leak of respiration from mitochondrial respiratory chain in T24 cells which was associated to the death of tumor cells. Taken together these results suggested that antitumor effects of NDGA in T24 cells are related to its ability to induce mitochondrial alteration.
Collapse
Affiliation(s)
- Gustavo Ignacio Vázquez-Cervantesa
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, 04510, Mexico
- Physiology Department (Cell Biology), National Institute of Cardiology “Ignacio Chávez”, Mexico City 14080, Mexico
| | - Karla Villaseñor-Aguayoa
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, 04510, Mexico
- Physiology Department (Cell Biology), National Institute of Cardiology “Ignacio Chávez”, Mexico City 14080, Mexico
| | - Jacqueline Hernández-Damiána
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, 04510, Mexico
- Physiology Department (Cell Biology), National Institute of Cardiology “Ignacio Chávez”, Mexico City 14080, Mexico
| | - Omar Emiliano Aparicio-Trejoa
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, 04510, Mexico
- Physiology Department (Cell Biology), National Institute of Cardiology “Ignacio Chávez”, Mexico City 14080, Mexico
| | - Omar Noel Medina-Camposa
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, 04510, Mexico
- Physiology Department (Cell Biology), National Institute of Cardiology “Ignacio Chávez”, Mexico City 14080, Mexico
| | - Rebeca López-Marureb
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, 04510, Mexico
- Physiology Department (Cell Biology), National Institute of Cardiology “Ignacio Chávez”, Mexico City 14080, Mexico
| | - José Pedraza-Chaverria
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), Mexico City, 04510, Mexico
- Physiology Department (Cell Biology), National Institute of Cardiology “Ignacio Chávez”, Mexico City 14080, Mexico
| |
Collapse
|
15
|
Wang L, Li L, Quan MY, Wang D, Jia Z, Li ZF, Li B, Guo L, Tan GJ. Nordihydroguaiaretic acid can suppress progression of experimental autoimmune encephalomyelitis. IUBMB Life 2018; 70:432-436. [PMID: 29637686 DOI: 10.1002/iub.1739] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 01/11/2018] [Accepted: 02/02/2018] [Indexed: 11/08/2022]
Abstract
Multiple sclerosis (MS) is a poorly understood disease mechanistically. MOG35-55 peptide induced experimental autoimmune encephalomyelitis (EAE) is a broadly used model to study MS. Using this model we have earlier shown that the antioxidant tempol or the small molecule inhibitor of p38 SB203580 can effectively prevent EAE progression. This effect was mediated by means of regulating immune inflammation, signaling by the p38MAPK-SGK1 pathway, and oxidative stress. However, there is a need to test drugs that can be used in pharmacological intervention of EAE. Given that nordihydroguaiaretic Acid (NDGA) has been shown to possess anti-oxidant activity and capacity of antagonizing autoimmune inflammation, we tested the effect of NDGA in ameliorating EAE in the current study. NDGA showed significant beneficial effect against EAE with both anti-inflammation and antioxidant activity. NDGA could weaken the immune inflammation at least partly by inhibiting the oxidant stress-p38MAPK-SGK1 pathway representing a target for putative pharmacological intervention. © 2018 IUBMB Life, 70(5):432-436, 2018.
Collapse
Affiliation(s)
- Liang Wang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China.,Key Laboratory of Hebei Neurology, Shijiazhuang, Hebei, 050000, China
| | - Lin Li
- Department of Neurology, TongRen Hospital of Capital medical University, Beijing, 100088, China
| | - Mo-Yuan Quan
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China.,Key Laboratory of Hebei Neurology, Shijiazhuang, Hebei, 050000, China
| | - Dong Wang
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China.,Key Laboratory of Hebei Neurology, Shijiazhuang, Hebei, 050000, China
| | - Zhen Jia
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China.,Key Laboratory of Hebei Neurology, Shijiazhuang, Hebei, 050000, China
| | - Zhen-Fei Li
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China.,Key Laboratory of Hebei Neurology, Shijiazhuang, Hebei, 050000, China
| | - Bin Li
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China.,Key Laboratory of Hebei Neurology, Shijiazhuang, Hebei, 050000, China
| | - Li Guo
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China.,Key Laboratory of Hebei Neurology, Shijiazhuang, Hebei, 050000, China
| | - Guo-Jun Tan
- Department of Neurology, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, 050000, China.,Key Laboratory of Hebei Neurology, Shijiazhuang, Hebei, 050000, China
| |
Collapse
|
16
|
Huang L, Wang J, Chen L, Zhu M, Wu S, Chu S, Zheng Y, Fan Z, Zhang J, Li W, Chen D, Yang X, Wang S, Qiu P, Wu J. Design, synthesis, and evaluation of NDGA analogues as potential anti-ischemic stroke agents. Eur J Med Chem 2018; 143:1165-1173. [DOI: 10.1016/j.ejmech.2017.09.028] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 09/05/2017] [Accepted: 09/15/2017] [Indexed: 12/31/2022]
|
17
|
Engel DF, de Oliveira J, Lieberknecht V, Rodrigues ALS, de Bem AF, Gabilan NH. Duloxetine Protects Human Neuroblastoma Cells from Oxidative Stress-Induced Cell Death Through Akt/Nrf-2/HO-1 Pathway. Neurochem Res 2017; 43:387-396. [DOI: 10.1007/s11064-017-2433-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Revised: 10/20/2017] [Accepted: 11/09/2017] [Indexed: 12/18/2022]
|
18
|
Anandhan A, Jacome MS, Lei S, Hernandez-Franco P, Pappa A, Panayiotidis MI, Powers R, Franco R. Metabolic Dysfunction in Parkinson's Disease: Bioenergetics, Redox Homeostasis and Central Carbon Metabolism. Brain Res Bull 2017; 133:12-30. [PMID: 28341600 PMCID: PMC5555796 DOI: 10.1016/j.brainresbull.2017.03.009] [Citation(s) in RCA: 90] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2016] [Revised: 03/19/2017] [Accepted: 03/20/2017] [Indexed: 12/24/2022]
Abstract
The loss of dopaminergic neurons in the substantia nigra pars compacta (SNpc) and the accumulation of protein inclusions (Lewy bodies) are the pathological hallmarks of Parkinson's disease (PD). PD is triggered by genetic alterations, environmental/occupational exposures and aging. However, the exact molecular mechanisms linking these PD risk factors to neuronal dysfunction are still unclear. Alterations in redox homeostasis and bioenergetics (energy failure) are thought to be central components of neurodegeneration that contribute to the impairment of important homeostatic processes in dopaminergic cells such as protein quality control mechanisms, neurotransmitter release/metabolism, axonal transport of vesicles and cell survival. Importantly, both bioenergetics and redox homeostasis are coupled to neuro-glial central carbon metabolism. We and others have recently established a link between the alterations in central carbon metabolism induced by PD risk factors, redox homeostasis and bioenergetics and their contribution to the survival/death of dopaminergic cells. In this review, we focus on the link between metabolic dysfunction, energy failure and redox imbalance in PD, making an emphasis in the contribution of central carbon (glucose) metabolism. The evidence summarized here strongly supports the consideration of PD as a disorder of cell metabolism.
Collapse
Affiliation(s)
- Annadurai Anandhan
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68516, United States; Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68503, United States
| | - Maria S Jacome
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68516, United States
| | - Shulei Lei
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68503, United States
| | - Pablo Hernandez-Franco
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68516, United States; Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68503, United States
| | - Aglaia Pappa
- Department of Molecular Biology and Genetics, Democritus University of Thrace, University Campus, Dragana, 68100 Alexandroupolis, Greece
| | | | - Robert Powers
- Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68503, United States; Department of Chemistry, University of Nebraska-Lincoln, Lincoln, NE 68503, United States
| | - Rodrigo Franco
- School of Veterinary Medicine and Biomedical Sciences, University of Nebraska-Lincoln, Lincoln, NE 68516, United States; Redox Biology Center, University of Nebraska-Lincoln, Lincoln, NE 68503, United States.
| |
Collapse
|
19
|
Oscillating Magnet Array-Based Nanomagnetic Gene Transfection: A Valuable Tool for Molecular Neurobiology Studies. NANOMATERIALS 2017; 7:nano7020028. [PMID: 28336862 PMCID: PMC5333013 DOI: 10.3390/nano7020028] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/28/2016] [Revised: 01/20/2017] [Accepted: 01/23/2017] [Indexed: 12/12/2022]
Abstract
To develop treatments for neurodegenerative disorders, it is critical to understand the biology and function of neurons in both normal and diseased states. Molecular studies of neurons involve the delivery of small biomolecules into cultured neurons via transfection to study genetic variants. However, as cultured primary neurons are sensitive to temperature change, stress, and shifts in pH, these factors make biomolecule delivery difficult, particularly non-viral delivery. Herein we used oscillating nanomagnetic gene transfection to successfully transfect SH-SY5Y cells as well as primary hippocampal and cortical neurons on different days in vitro. This novel technique has been used to effectively deliver genetic material into various cell types, resulting in high transfection efficiency and viability. From these observations and other related studies, we suggest that oscillating nanomagnetic gene transfection is an effective method for gene delivery into hard-to-transfect neuronal cell types.
Collapse
|
20
|
Lu ML, Xiang XH, Xia SH. Potential Signaling Pathways Involved in the Clinical Application of Oxymatrine. Phytother Res 2016; 30:1104-12. [PMID: 27165263 DOI: 10.1002/ptr.5632] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 02/29/2016] [Accepted: 04/06/2016] [Indexed: 12/11/2022]
Abstract
Oxymatrine, an alkaloid component extracted from the roots of Sophora species, has been shown to have antiinflammatory, antifibrosis, and antitumor effects and the ability to protect against myocardial damage, etc. The potential signaling pathways involved in the clinical application of oxymatrine might include the TGF-β/Smad, toll-like receptor 4/nuclear factor kappa-light-chain-enhancer of activated B cells, toll-like receptor9/TRAF6, Janus kinase/signal transduction and activator of transcription, phosphatidylinositol-3 kinase/Akt, delta-opioid receptor-arrestinl-Bcl-2, CD40, epidermal growth factor receptor, nuclear factor erythroid-2-related factor 2/heme oxygenase-1 signaling pathways, and dimethylarginine dimethylaminohydrolase/asymmetric dimethylarginine metabolism pathway. In this review, we summarize the recent investigations of the signaling pathways related to oxymatrine to provide clues and references for further studies on its clinical application. Copyright © 2016 John Wiley & Sons, Ltd.
Collapse
Affiliation(s)
- Mei-Li Lu
- Department of Hepatopancreatobiliary and Splenic Medicine, Affiliated Hospital, Logistics University of People's Armed Police Force, Tianjin, 300162, China
| | - Xiao-Hui Xiang
- Department of Hepatopancreatobiliary and Splenic Medicine, Affiliated Hospital, Logistics University of People's Armed Police Force, Tianjin, 300162, China
| | - Shi-Hai Xia
- Department of Hepatopancreatobiliary and Splenic Medicine, Affiliated Hospital, Logistics University of People's Armed Police Force, Tianjin, 300162, China
| |
Collapse
|
21
|
Andérica-Romero AC, Hernández-Damián J, Vázquez-Cervantes GI, Torres I, González-Herrera IG, Pedraza-Chaverri J. The MLN4924 inhibitor exerts a neuroprotective effect against oxidative stress injury via Nrf2 protein accumulation. Redox Biol 2016; 8:341-7. [PMID: 26966893 PMCID: PMC4789348 DOI: 10.1016/j.redox.2016.02.008] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Revised: 02/25/2016] [Accepted: 02/26/2016] [Indexed: 01/07/2023] Open
Abstract
It was explored the cytoprotective and antioxidant effect of MLN4924, a specific inhibitor of Nedd8-activating enzyme (NAE), against hydrogen peroxide (H2O2)-induced damage in cerebellar granule neurons (CGNs). Primary cultures of CGNs were exposed to H2O2 after preincubation with MLN4924. The compounds were removed, and CGNs were incubated in culture medium for 24 h in order to determine cell viability by 3-[4,5-dimethylthiazol-2-yl)]-2,5-diphenyl-tetrazolium bromide (MTT) and fluorescein diacetate (FDA) assays. It was demonstrated that MLN4924 remarkably attenuated H2O2-induced cell damage. Meanwhile reactive oxygen species (ROS) production was evaluated with the fluorescent probe dihydroethidium (DHE). Interestingly H2O2-induced ROS production was inhibited by pretreatment with MLN4924. MLN4924 treatment in CGNs resulted in nuclear factor E2-related factor 2 (Nrf2) protein accumulation. Intriguingly this effect was observed in the cytosolic and nuclear compartments of the CGNs. The cytoprotective effect of MLN4924 was associated with its ability to diminish ROS production induced by H2O2 and the accumulation of Nrf2 protein levels in the cytoplasm and nucleus of the CGNs. MLN4924 attenuates H2O2-induced neuronal damage. MLN4924 attenuates H2O2-induced ROS production in neurons. MLN4924 promotes both nuclear and cytoplasmic accumulation of Nrf2.
Collapse
Affiliation(s)
- Ana Cristina Andérica-Romero
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), University City, 04510 Mexico City, Mexico
| | - Jacqueline Hernández-Damián
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), University City, 04510 Mexico City, Mexico
| | - Gustavo Ignacio Vázquez-Cervantes
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), University City, 04510 Mexico City, Mexico
| | - Ismael Torres
- Animal Care Unit, Faculty of Medicine, National Autonomous University of Mexico (UNAM), University City, 04510 Mexico City, Mexico
| | | | - José Pedraza-Chaverri
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), University City, 04510 Mexico City, Mexico.
| |
Collapse
|
22
|
Guzmán-Beltrán S, Rubio-Badillo MÁ, Juárez E, Hernández-Sánchez F, Torres M. Nordihydroguaiaretic acid (NDGA) and α-mangostin inhibit the growth of Mycobacterium tuberculosis by inducing autophagy. Int Immunopharmacol 2016; 31:149-57. [DOI: 10.1016/j.intimp.2015.12.027] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2015] [Revised: 12/17/2015] [Accepted: 12/18/2015] [Indexed: 01/09/2023]
|
23
|
Zimmermann K, Baldinger J, Mayerhofer B, Atanasov AG, Dirsch VM, Heiss EH. Activated AMPK boosts the Nrf2/HO-1 signaling axis--A role for the unfolded protein response. Free Radic Biol Med 2015; 88:417-426. [PMID: 25843659 PMCID: PMC4568300 DOI: 10.1016/j.freeradbiomed.2015.03.030] [Citation(s) in RCA: 190] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/18/2015] [Accepted: 03/19/2015] [Indexed: 11/20/2022]
Abstract
In light of the emerging interplay between redox and metabolic signaling pathways we investigated the potential cross talk between nuclear factor E2-related factor 2 (Nrf2) and AMP-activated kinase (AMPK), central regulators of the cellular redox and energy balance, respectively. Making use of xanthohumol (XN) as an activator of both the AMPK and the Nrf2 signaling pathway we show that AMPK exerts a positive influence on Nrf2/heme oxygenase (HO)-1 signaling in mouse embryonic fibroblasts. Genetic ablation and pharmacological inhibition of AMPK blunts Nrf2-dependent HO-1 expression by XN already at the mRNA level. XN leads to AMPK activation via interference with mitochondrial function and activation of liver kinase B1 as upstream AMPK kinase. The subsequent AMPK-mediated enhancement of the Nrf2/HO-1 response does not depend on inhibition of the mammalian target of rapamycin, inhibition of glycogen synthase kinase 3β, or altered abundance of Nrf2 (total and nuclear). However, reduced endoplasmic reticulum stress was identified and elaborated as a step in the AMPK-augmented Nrf2/HO-1 response. Overall, we shed more light on the hitherto incompletely understood cross talk between the LKB1/AMPK and the Nrf2/HO-1 axis revealing for the first time involvement of the unfolded protein response as an additional player and suggesting tight cooperation between signaling pathways controlling cellular redox, energy, or protein homeostasis.
Collapse
Affiliation(s)
- Kristin Zimmermann
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Johannes Baldinger
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Barbara Mayerhofer
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Atanas G Atanasov
- Department of Pharmacognosy, University of Vienna, Althanstrasse 14, 1090 Vienna, Austria
| | - Verena M Dirsch
- 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.
| |
Collapse
|
24
|
Ramos-Enríquez MA, Medina-Campos ON, Pedraza-Chaverri J, Iglesias-Arteaga MA. Synthesis and radical scavenger properties of novel spirochromenes derived from steroid sapogenins. Steroids 2015; 98:132-7. [PMID: 25824324 DOI: 10.1016/j.steroids.2015.03.013] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2015] [Revised: 03/10/2015] [Accepted: 03/20/2015] [Indexed: 11/23/2022]
Abstract
Tandem aldol condensation between steroid sapogenins and hydroxylated benzaldehydes afforded steroidal spirochromenes. Compounds that bear a phenolic hydroxyl group at position C-6', obtained by a reaction with 2,5-dihydroxybenzaldehyde, showed approximately 80% of maximal radical scavenging activity in the 1,1-diphenyl-2-picrylhydrazyl radical (DPPH) assay at 288 nM. In contrast, the starting steroid sapogenins and the spirochromenes without a phenolic group in the side chain proved to be inactive.
Collapse
Affiliation(s)
- Manuel A Ramos-Enríquez
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico
| | - Omar N Medina-Campos
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico
| | - José Pedraza-Chaverri
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico
| | - Martín A Iglesias-Arteaga
- Facultad de Química, Universidad Nacional Autónoma de México, Ciudad Universitaria, 04510 México, D.F., Mexico.
| |
Collapse
|
25
|
Zhang X, Zhang X, Niu Z, Qi Y, Huang D, Zhang Y. 2,4,6-Trichlorophenol Cytotoxicity Involves Oxidative Stress, Endoplasmic Reticulum Stress, and Apoptosis. Int J Toxicol 2014; 33:532-41. [DOI: 10.1177/1091581814557701] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This study aims to evaluate the cytotoxicity and potential mechanisms of 2,4,6-trichlorophenol (2,4,6-TCP) in mouse embryonic fibroblasts. Our results show that 2,4,6-TCP causes morphological changes and reduces cell viability. The overproduction of reactive oxygen species, the upregulation of nuclear factor-E2-related factor 2 (Nrf2) and heme oxygenase 1 (HMOX1) messenger RNA (mRNA) expressions, and the nuclear translocation of Nrf2 protein demonstrate that 2,4,6-TCP induces oxidative stress, and the Nrf2/HMOX1 pathway might be involved in 2,4,6-TCP-induced antioxidative response. Simultaneously, our data also demonstrate that 2,4,6-TCP upregulates the expressions of binding immunoglobulin protein, inositol-requiring enzyme/endonuclease 1α, and C/EBP homologous protein; stimulates α subunit of eukaryotic translation initiation factor 2 phosphorylation; and induces the splicing of Xbp1 mRNA, suggesting that endoplasmic reticulum (ER) stress is triggered. Moreover, 2,4,6-TCP alters the mitochondrial membrane potential and increases the apoptosis rate, the caspase 3 activity, and the Bax/Bcl-2 ratio, demonstrating that the mitochondrial pathway is involved in the 2,4,6-TCP-induced apoptosis. Thus, these results show that 2,4,6-TCP induces oxidative stress, ER stress, and apoptosis, which together contribute to its cytotoxicity in vitro.
Collapse
Affiliation(s)
- Xiaoning Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Xiaona Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Zhidan Niu
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yongmei Qi
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Dejun Huang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| | - Yingmei Zhang
- Gansu Key Laboratory of Biomonitoring and Bioremediation for Environmental Pollution, School of Life Sciences, Lanzhou University, Lanzhou, China
| |
Collapse
|
26
|
Garcia-Gil M, Tozzi MG, Varani S, Della Verde L, Petrotto E, Balestri F, Colombaioni L, Camici M. The combination of adenosine deaminase inhibition and deoxyadenosine induces apoptosis in a human astrocytoma cell line. Neurochem Int 2014; 80:14-22. [PMID: 25447764 DOI: 10.1016/j.neuint.2014.11.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2014] [Revised: 11/06/2014] [Accepted: 11/17/2014] [Indexed: 12/16/2022]
Abstract
Alterations in the functions of astrocytes contribute to the appearance of a variety of neurological pathologies. Gliomas, especially those of astrocytic origin, are particularly resistant to chemotherapy and are often characterized by a poor prognosis. Neuroblastoma is the tumour with the higher incidence in infants. Anticancer drugs can induce apoptosis and their cytotoxic effect is often mediated by this process. We have previously demonstrated that the combination of deoxycoformycin, a strong adenosine deaminase inhibitor, and deoxyadenosine is toxic for a human astrocytoma cell line. In fact, after 15 h of treatment, this combination increases both mitochondrial reactive oxygen species and mitochondrial mass, induces apoptosis as indicated by cytochrome c release from mitochondria and activation of caspase-3. These events are preceded by reduction in lactate release in the medium. In this work we demonstrate that after 8 h of incubation with deoxyadenosine and deoxycoformycin, caspase-8 is activated, mitochondrial mass increases and mitochondrial reactive oxygen species decrease. The addition of baicalein to the incubation medium reduces cell death and caspase-3 activity induced by deoxycoformycin and deoxyadenosine in combination. This protective effect is correlated to an increase of lactate released in the medium, a decrease in the intracellular levels of dATP, and an increase in ATP levels, as compared with the cells subjected to the treatment with deoxycoformycin and deoxyadenosine without any further addition. The effect of baicalein appears to be related to an inhibition of deoxyadenosine phosphorylation, rather than or in addition to the well known antioxidant activity of the compound. This work indicates that an astrocytoma cell line, reported to be resistant to mitochondria-dependent pathways of apoptosis, is indeed very sensitive to a manipulation affecting the balance of cellular purine metabolite concentrations. The same treatment is also cytotoxic on a neuroblastoma cell line, thus suggesting long term implications for cancer therapy.
Collapse
Affiliation(s)
- Mercedes Garcia-Gil
- Dipartimento di Biologia, Unità Fisiologia Generale, Via S. Zeno 31, Pisa, Italy
| | | | - Stefano Varani
- Dipartimento di Biologia, Unità Fisiologia Generale, Via S. Zeno 31, Pisa, Italy
| | - Lorenza Della Verde
- Dipartimento di Biologia, Unità Fisiologia Generale, Via S. Zeno 31, Pisa, Italy
| | - Edoardo Petrotto
- Dipartimento di Biologia, Unità Fisiologia Generale, Via S. Zeno 31, Pisa, Italy
| | | | | | - Marcella Camici
- Dipartimento di Biologia, Unità Biochimica, Via S. Zeno 51, Pisa, Italy.
| |
Collapse
|
27
|
Hernández-Damián J, Andérica-Romero AC, Pedraza-Chaverri J. Paradoxical Cellular Effects and Biological Role of the Multifaceted Compound Nordihydroguaiaretic Acid. Arch Pharm (Weinheim) 2014; 347:685-97. [DOI: 10.1002/ardp.201400159] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2014] [Revised: 05/29/2014] [Accepted: 06/05/2014] [Indexed: 12/15/2022]
Affiliation(s)
- Jacqueline Hernández-Damián
- Faculty of Chemistry, Department of Biology; National Autonomous University of Mexico (UNAM); University City D.F. Mexico
| | - Ana Cristina Andérica-Romero
- Faculty of Chemistry, Department of Biology; National Autonomous University of Mexico (UNAM); University City D.F. Mexico
| | - José Pedraza-Chaverri
- Faculty of Chemistry, Department of Biology; National Autonomous University of Mexico (UNAM); University City D.F. Mexico
| |
Collapse
|
28
|
de la Rosa LA, Vazquez-Flores AA, Alvarez-Parrilla E, Rodrigo-García J, Medina-Campos ON, Ávila-Nava A, González-Reyes S, Pedraza-Chaverri J. Content of major classes of polyphenolic compounds, antioxidant, antiproliferative, and cell protective activity of pecan crude extracts and their fractions. J Funct Foods 2014. [DOI: 10.1016/j.jff.2014.02.008] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
|
29
|
Curcumin pretreatment induces Nrf2 and an antioxidant response and prevents hemin-induced toxicity in primary cultures of cerebellar granule neurons of rats. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:801418. [PMID: 24454990 PMCID: PMC3885319 DOI: 10.1155/2013/801418] [Citation(s) in RCA: 124] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2013] [Accepted: 11/15/2013] [Indexed: 12/11/2022]
Abstract
Curcumin is a bifunctional antioxidant derived from Curcuma longa. This study identifies curcumin as a neuroprotectant against hemin-induced damage in primary cultures of cerebellar granule neurons (CGNs) of rats. Hemin, the oxidized form of heme, is a highly reactive compound that induces cellular injury. Pretreatment of CGNs with 5–30 μM curcumin effectively increased by 2.3–4.9 fold heme oxygenase-1 (HO-1) expression and by 5.6–14.3-fold glutathione (GSH) levels. Moreover, 15 μM curcumin attenuated by 55% the increase in reactive oxygen species (ROS) production, by 94% the reduction of GSH/glutathione disulfide (GSSG) ratio, and by 49% the cell death induced by hemin. The inhibition of heme oxygenase system or GSH synthesis with tin mesoporphyrin and buthionine sulfoximine, respectively, suppressed the protective effect of curcumin against hemin-induced toxicity. These data strongly suggest that HO-1 and GSH play a major role in the protective effect of curcumin. Furthermore, it was found that 24 h of incubation with curcumin increases by 1.4-, 2.3-, and 5.2-fold the activity of glutathione reductase, glutathione S-transferase and superoxide dismutase, respectively. Additionally, it was found that curcumin was capable of inducing nuclear factor (erythroid-derived 2)-like 2 (Nrf2) translocation into the nucleus. These data suggest that the pretreatment with curcumin induces Nrf2 and an antioxidant response that may play an important role in the protective effect of this antioxidant against hemin-induced neuronal death.
Collapse
|
30
|
Evaluation of the antioxidative properties of lipoxygenase inhibitors. Pharmacol Rep 2013; 64:1179-88. [PMID: 23238474 DOI: 10.1016/s1734-1140(12)70914-3] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 05/30/2012] [Indexed: 11/22/2022]
Abstract
BACKGROUND Oxidative stress is a component of many pathological conditions including neurodegenerative diseases and inflammation. An important source of reactive oxygen species (ROS) are lipoxygenases (LOX) - enzymes responsible for the metabolism of arachidonic acid and other polyunsaturated fatty acids. LOX inhibitors have a protective effect in inflammatory diseases and in neurodegenerative disorders because of their anti-inflammatory activity. However, the molecular mechanism of the protective action of LOX inhibitors has not yet been fully elucidated. METHODS The aim of this study was to compare the antioxidative potential of widely used LOX inhibitors: BWB70C, AA-861, zileuton, baicalein and NDGA. The antioxidative properties were evaluated in cell-free systems. We measured the effect of the tested compounds on iron/ascorbate-induced lipid peroxidation and on carbonyl group formation in the rat brain homogenate. Direct free radical scavenging was analyzed by using DPPH assay. RESULTS Our data showed that the inhibitor of all LOXs, i.e., NDGA, 5-LOX inhibitor BWB70C and the inhibitor of 12/15-LOX, baicalein, significantly decreased the level of lipid and protein oxidation. The free radical scavenging activity of these inhibitors was comparable to known ROS scavengers, i.e., resveratrol and trolox. Zileuton (the inhibitor of 5-LOX) slightly prevented lipid and protein oxidation, it also scavenged the DPPH radical. AA-861 (the inhibitor of 5 and 12/15-LOX) slightly protected lipids against Fe/asc-evoked lipid peroxidation at high concentrations, but had no effect on carbonyl group formation and DPPH scavenging. CONCLUSIONS Our results indicate that some LOX inhibitors demonstrate potent anti-oxidative, free radical scavenging properties. AA-861, whose antioxidative potential is very weak, may be a specific tool to be used in experimental and perhaps even clinical applications.
Collapse
|
31
|
Zúñiga-Toalá A, Zatarain-Barrón ZL, Hernández-Pando R, Negrette-Guzmán M, Huerta-Yepez S, Torres I, Pinzón E, Tapia E, Pedraza-Chaverri J. Nordihydroguaiaretic acid induces Nrf2 nuclear translocation in vivo and attenuates renal damage and apoptosis in the ischemia and reperfusion model. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2013; 20:775-779. [PMID: 23643094 DOI: 10.1016/j.phymed.2013.03.020] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/12/2012] [Revised: 02/23/2013] [Accepted: 03/26/2013] [Indexed: 06/02/2023]
Abstract
It has been shown that the pretreatment with nordihydroguaiaretic acid (NDGA), a lignan with direct and indirect antioxidant properties, protects against the ischemia-reperfusion (I/R)-induced renal oxidant damage. Although it has been shown that NDGA induces Nrf2 nuclear translocation in renal epithelial LLC-PK1 cells in culture, it is unknown if NDGA may induce Nrf2 translocation in vivo. In this work was explored if NDGA is able to induce in vivo Nrf2 nuclear translocation in kidneys of rats submitted to uni-nephrectomy (U-NX) or I/R injury. Four groups of male Wistar rats were used: U-NX, NDGA, I/R, and I/R+NDGA. NDGA was injected i.p. (10mg/kg/day) starting 48 h before I/R. Kidney samples were obtained at 3 h of reperfusion after to measure Nrf2 translocation. Additional groups of rats were studied at 24 h of reperfusion to measure histological damage and apoptosis. NDGA was able to induce Nrf2 translocation in vivo in kidneys of rats submitted to both U-NX and I/R injury and to protect against renal histological damage and apoptosis. It is concluded that the pretreatment of NDGA is able to induce in vivo nuclear Nrf2 translocation in kidney of rats suggesting that this may be involved in the renoprotection against I/R.
Collapse
Affiliation(s)
- Adverqueydi Zúñiga-Toalá
- Faculty of Chemistry, Department of Biology, National Autonomous University of Mexico-UNAM, Mexico
| | | | | | | | | | | | | | | | | |
Collapse
|
32
|
Chow AM, Tang DWF, Hanif A, Brown IR. Induction of heat shock proteins in cerebral cortical cultures by celastrol. Cell Stress Chaperones 2013; 18:155-60. [PMID: 22865541 PMCID: PMC3581628 DOI: 10.1007/s12192-012-0364-0] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2012] [Revised: 07/23/2012] [Accepted: 07/24/2012] [Indexed: 01/06/2023] Open
Abstract
Alzheimer's disease, Parkinson's disease and amyotrophic lateral sclerosis (ALS) are 'protein misfolding disorders' of the mature nervous system that are characterized by the accumulation of protein aggregates and selective cell loss. Different brain regions are impacted, with Alzheimer's affecting cells in the cerebral cortex, Parkinson's targeting dopaminergic cells in the substantia nigra and ALS causing degeneration of cells in the spinal cord. These diseases differ widely in frequency in the human population. Alzheimer's is more frequent than Parkinson's and ALS. Heat shock proteins (Hsps) are 'protein repair agents' that provide a line of defense against misfolded, aggregation-prone proteins. We have suggested that differing levels of constitutively expressed Hsps (Hsc70 and Hsp27) in neural cell populations confer a variable buffering capacity against 'protein misfolding disorders' that correlates with the relative frequencies of these neurodegenerative diseases. The high relative frequency of Alzheimer's may due to low levels of Hsc70 and Hsp27 in affected cell populations that results in a reduced defense capacity against protein misfolding. Here, we demonstrate that celastrol, but not classical heat shock treatment, is effective in inducing a set of neuroprotective Hsps in cultures derived from cerebral cortices, including Hsp70, Hsp27 and Hsp32. This set of Hsps is induced by celastrol at 'days in vitro' (DIV) 13 when cultured cortical cells reached maturity. The inducibility of a set of neuroprotective Hsps in mature cortical cultures at DIV13 suggests that celastrol is a potential agent to counter Alzheimer's disease, a neurodegenerative 'protein misfolding disorder' of the adult brain that targets cells in the cerebral cortex.
Collapse
Affiliation(s)
- Ari M. Chow
- Centre for the Neurobiology of Stress, Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C 1A4 Canada
| | - Derek W. F. Tang
- Centre for the Neurobiology of Stress, Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C 1A4 Canada
| | - Asad Hanif
- Centre for the Neurobiology of Stress, Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C 1A4 Canada
| | - Ian R. Brown
- Centre for the Neurobiology of Stress, Department of Biological Sciences, University of Toronto Scarborough, 1265 Military Trail, Toronto, ON M1C 1A4 Canada
| |
Collapse
|
33
|
Nordihydroguaiaretic acid attenuates the oxidative stress-induced decrease of CD33 expression in human monocytes. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2013; 2013:375893. [PMID: 23533689 PMCID: PMC3596923 DOI: 10.1155/2013/375893] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/12/2012] [Revised: 12/21/2012] [Accepted: 12/29/2012] [Indexed: 01/31/2023]
Abstract
Nordihydroguaiaretic acid (NDGA) is a natural lignan with recognized antioxidant and beneficial properties that is isolated from Larrea tridentata. In this study, we evaluated the effect of NDGA on the downregulation of oxidant stress-induced CD33 in human monocytes (MNs). Oxidative stress was induced by iodoacetate (IAA) or hydrogen peroxide (H2O2) and was evaluated using reactive oxygen species (ROS) production, and cell viability. NDGA attenuates toxicity, ROS production and the oxidative stress-induced decrease of CD33 expression secondary to IAA or H2O2 in human MNs. It was also shown that NDGA (20 μM) attenuates cell death in the THP-1 cell line that is caused by treatment with either IAA or H2O2. These results suggest that NDGA has a protective effect on CD33 expression, which is associated with its antioxidant activity in human MNs.
Collapse
|
34
|
Lin HY, Yeh WL, Huang BR, Lin C, Lai CH, Lin H, Lu DY. Desipramine protects neuronal cell death and induces heme oxygenase-1 expression in Mes23.5 dopaminergic neurons. PLoS One 2012; 7:e50138. [PMID: 23209658 PMCID: PMC3507930 DOI: 10.1371/journal.pone.0050138] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 10/17/2012] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Desipramine is known principally as a tricyclic antidepressant drug used to promote recovery of depressed patients. It has also been used in a number of other psychiatric and medical conditions. The present study is the first to investigate the neuroprotective effect of desipramine. METHODOLOGY/PRINCIPAL FINDINGS Mes23.5 dopaminergic cells were used to examine neuroprotective effect of desipramine. Western blot, reverse transcription-PCR, MTT assay, siRNA transfection and electrophoretic mobility shift assay (EMSA) were carried out to assess the effects of desipramine. Desipramine induces endogenous anti-oxidative enzyme, heme oxygenase-1 (HO-1) protein and mRNA expression in concentration- and time-dependent manners. A different type of antidepressant SSRI (selective serotonin reuptake inhibitor), fluoxetine also shows similar effects of desipramine on HO-1 expression. Moreover, desipramine induces HO-1 expression through activation of ERK and JNK signaling pathways. Desipramine also increases NF-E2-related factor-2 (Nrf2) accumulation in the nucleus and enhances Nrf2-DNA binding activity. Moreover, desipramine-mediated increase of HO-1 expression is reduced by transfection with siRNA against Nrf2. On the other hand, pretreatment of desipramine protects neuronal cells against rotenone- and 6-hydroxydopamine (6-OHDA)-induced neuronal death. Furthermore, inhibition of HO-1 activity by a HO-1 pharmacological inhibitor, ZnPP IX, attenuates the neuroprotective effect of desipramine. Otherwise, activation of HO-1 activity by HO-1 activator and inducer protect 6-OHDA-induced neuronal death. CONCLUSIONS/SIGNIFICANCE These findings suggest that desipramine-increased HO-1 expression is mediated by Nrf2 activation through the ERK and JNK signaling pathways. Our results also suggest that desipramine provides a novel effect of neuroprotection, and neurodegenerative process might play an important role in depression disorder.
Collapse
Affiliation(s)
- Hsiao-Yun Lin
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
| | - Wei-Lan Yeh
- Cancer Research Center, Department of Medical Research, Changhua Christian Hospital, Changhua, Taiwan
| | - Bor-Ren Huang
- Department of Neurosurgery, Buddhist Tzu Chi General Hospital, Taichung Branch, Taichung, Taiwan
| | - Chingju Lin
- Department of Physiology, School of Medicine, China Medical University, Taichung, Taiwan
| | - Chih-Ho Lai
- Department of Microbiology, School of Medicine, China Medical University, Taichung, Taiwan
| | - Ho Lin
- Department of Life Sciences, National Chung Hsing University, Taichung, Taiwan
- * E-mail: (HL); (D-YL)
| | - Dah-Yuu Lu
- Graduate Institute of Neural and Cognitive Sciences, China Medical University, Taichung, Taiwan
- * E-mail: (HL); (D-YL)
| |
Collapse
|
35
|
In vitro inhibitory profile of NDGA against AChE and its in silico structural modifications based on ADME profile. J Mol Model 2012; 19:1179-94. [PMID: 23229229 DOI: 10.1007/s00894-012-1656-0] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Accepted: 10/16/2012] [Indexed: 01/02/2023]
Abstract
Acetylcholinesterase (AChE) inhibitors are currently in focus for the pharmacotherapy of Alzheimer's disease (AD). These inhibitors increase the level of acetylcholine in the brain and facilitate cholinergic neurotransmission. AChE inhibitors such as rivastigmine, galantamine, physostigmine and huperzine are obtained from plants, indicating that plants can serve as a potential source for novel AChE inhibitors. We have performed a virtual screening of diverse natural products with distinct chemical structure against AChE. NDGA was one among the top scored compounds and was selected for enzyme kinetic studies. The IC(50) of NDGA on AChE was 46.2 μM. However, NDGA showed very poor central nervous system (CNS) activity and blood-brain barrier (BBB) penetration. In silico structural modification on NDGA was carried out in order to obtain derivatives with better CNS activity as well as BBB penetration. The studies revealed that some of the designed compounds can be used as lead molecules for the development of drugs against AD.
Collapse
|
36
|
Sanguisorbae Radix Protects Against 6‐Hydroxydopamine‐induced Neurotoxicity by Regulating NADPH Oxidase and NF‐E2‐related Factor‐2/Heme Oxygenase‐1 Expressions. Phytother Res 2012; 27:1012-7. [DOI: 10.1002/ptr.4802] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2011] [Revised: 07/13/2012] [Accepted: 07/14/2012] [Indexed: 01/30/2023]
|
37
|
Magesh S, Chen Y, Hu L. Small molecule modulators of Keap1-Nrf2-ARE pathway as potential preventive and therapeutic agents. Med Res Rev 2012; 32:687-726. [PMID: 22549716 DOI: 10.1002/med.21257] [Citation(s) in RCA: 600] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Kelch-like ECH-associated protein 1 (Keap1)-nuclear factor erythroid 2-related factor 2 (Nrf2)-antioxidant response elements (ARE) pathway represents one of the most important cellular defense mechanisms against oxidative stress and xenobiotic damage. Activation of Nrf2 signaling induces the transcriptional regulation of ARE-dependent expression of various detoxifying and antioxidant defense enzymes and proteins. Keap1-Nrf2-ARE signaling has become an attractive target for the prevention and treatment of oxidative stress-related diseases and conditions including cancer, neurodegenerative, cardiovascular, metabolic, and inflammatory diseases. Over the last few decades, numerous Nrf2 inducers have been developed and some of them are currently undergoing clinical trials. Recently, overactivation of Nrf2 has been implicated in cancer progression as well as in drug resistance to cancer chemotherapy. Thus, Nrf2 inhibitors could potentially be used to improve the effectiveness of cancer therapy. Herein, we review the signaling mechanism of Keap1-Nrf2-ARE pathway, its disease relevance, and currently known classes of small molecule modulators. We also discuss several aspects of Keap1-Nrf2 interaction, Nrf2-based peptide inhibitor design, and the screening assays currently used for the discovery of direct inhibitors of Keap1-Nrf2 interaction.
Collapse
Affiliation(s)
- Sadagopan Magesh
- Department of Medicinal Chemistry, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, 160 Frelinghuysen Road, Piscataway, NJ 08854, USA
| | | | | |
Collapse
|
38
|
Involvement of Heme Oxygenase-1 Induction in the Cytoprotective and Immunomodulatory Activities of Viola patrinii in Murine Hippocampal and Microglia Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2012; 2012:128019. [PMID: 22536278 PMCID: PMC3320063 DOI: 10.1155/2012/128019] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/18/2011] [Revised: 01/04/2012] [Accepted: 01/10/2012] [Indexed: 01/13/2023]
Abstract
A number of diseases that lead to injury of the central nervous system are caused by oxidative stress and inflammation in the brain. In this study, NNMBS275, consisting of the ethanol extract of Viola patrinii, showed potent antioxidative and anti-inflammatory activity in murine hippocampal HT22 cells and BV2 microglia. NNMBS275 increased cellular resistance to oxidative injury caused by glutamate-induced neurotoxicity and reactive oxygen species generation in HT22 cells. In addition, the anti-inflammatory effects of NNMBS275 were demonstrated by the suppression of proinflammatory mediators, including proinflammatory enzymes (inducible nitric oxide synthase and cyclooxygenase-2) and cytokines (tumor necrosis factor-α and interleukin-1β). Furthermore, we found that the neuroprotective and anti-inflammatory effects of NNMBS275 were linked to the upregulation of nuclear transcription factor-E2-related factor 2-dependent expression of heme oxygenase-1 in HT22 and BV2 cells. These results suggest that NNMBS275 possesses therapeutic potential against neurodegenerative diseases that are induced by oxidative stress and neuroinflammation.
Collapse
|
39
|
Liu Y, Wang H, Zhu Y, Chen L, Qu Y, Zhu Y. The protective effect of nordihydroguaiaretic acid on cerebral ischemia/reperfusion injury is mediated by the JNK pathway. Brain Res 2012; 1445:73-81. [DOI: 10.1016/j.brainres.2012.01.031] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2011] [Revised: 01/09/2012] [Accepted: 01/13/2012] [Indexed: 11/15/2022]
|
40
|
Liu X, Guo W, Wu S, Wang L, Wang J, Dai B, Kim ES, Heymach JV, Wang M, Girard L, Minna J, Roth JA, Swisher SG, Fang B. Antitumor activity of a novel STAT3 inhibitor and redox modulator in non-small cell lung cancer cells. Biochem Pharmacol 2012; 83:1456-64. [PMID: 22387047 DOI: 10.1016/j.bcp.2012.02.010] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2011] [Revised: 02/14/2012] [Accepted: 02/15/2012] [Indexed: 01/06/2023]
Abstract
NSC-743380 is a novel STAT3 inhibitor that suppresses the growth of several NCI-60 cancer cell lines derived from different tissues and induces regression of xenograft tumors in vivo at various doses. To evaluate the antitumor activity of NSC-743380 in lung cancer cells, we analyzed the susceptibility of 50 NSCLC cell lines to this compound using cell viability assay. About 32% (16 of 50) of these cell lines were highly susceptible to this compound, with a 50% inhibitory concentration (IC₅₀) of < 1 μM. In mechanistic studies, the increased numbers of apoptotic cells as well as increased PARP cleavage showed that cytotoxic effects correlate with apoptosis induction. Treatment with NSC-743380 inhibited transcription factor STAT3 activation and induced ROS production in sensitive human lung cancer cell lines but not in resistant cells. Blocking ROS generation with the antioxidant NDGA dramatically abolished NSC-743380-induced growth suppression and apoptosis, but had minimal effect on NSC-743380-induced STAT3 inhibition, suggesting that STAT3 inhibition is not caused by ROS production. Interestingly, knockdown of STAT3 with use of shSTAT3 induced ROS generation and suppressed tumor cell growth. Moreover, scavenging ROS induced by STAT3 inhibition also diminished antitumor activity of STAT3 inhibition. In vivo administration of NSC-743380 suppressed tumor growth and p-STAT3 in lung tumors. Our results indicate that NSC-743380 is a potent anticancer agent for lung cancer and that its apoptotic effects in lung cancer cells are mediated by induction of ROS through STAT3 inhibition.
Collapse
Affiliation(s)
- Xiaoying Liu
- Department of Thoracic and Cardiovascular Surgery, the University of Texas MD Anderson Cancer Center, Houston, TX 77030, USA
| | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
41
|
Rojo AI, Medina-Campos ON, Rada P, Zúñiga-Toalá A, López-Gazcón A, Espada S, Pedraza-Chaverri J, Cuadrado A. Signaling pathways activated by the phytochemical nordihydroguaiaretic acid contribute to a Keap1-independent regulation of Nrf2 stability: Role of glycogen synthase kinase-3. Free Radic Biol Med 2012; 52:473-87. [PMID: 22142471 DOI: 10.1016/j.freeradbiomed.2011.11.003] [Citation(s) in RCA: 165] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2011] [Revised: 11/03/2011] [Accepted: 11/04/2011] [Indexed: 01/29/2023]
Abstract
Defense against oxidative stress is executed by an antioxidant program that is tightly controlled by the transcription factor Nrf2. The stability of Nrf2 involves the interaction of two degradation domains, designated Neh2 and Neh6, with the E3 ubiquitin ligase adaptors, Keap1 and β-TrCP, respectively. The regulation of Nrf2 through the Neh6 degron remains largely unexplored but requires GSK-3 to form a phosphodegron. In this study, the cancer-chemopreventive agent nordihydroguaiaretic acid (NDGA) increased the level of Nrf2 protein and expression of heme oxygenase-1 (HO-1) in kidney-derived LLC-PK1 and HEK293T cells and in wild-type mouse embryo fibroblasts (MEFs). However, NDGA did not induce HO-1 in Nrf2(-/-) MEFs, indicating that Nrf2 is required for induction. The relevance of the Nrf2/HO-1 axis to antioxidant protection was further demonstrated by the finding that the HO-1 inhibitor stannous-mesoporphyrin abolished protection against hydrogen peroxide conferred by NDGA. NDGA increased Nrf2 and HO-1 protein levels in Keap1(-/-) MEFs, implying that Keap1-independent mechanisms regulate Nrf2 stability. Mutants of the Neh2 or Nrh6 domain and chimeric proteins comprising cyan fluorescent protein fused to Neh2 and green fluorescent protein fused to Neh6 exhibited longer half-lives in the presence of NDGA, demonstrating that NDGA targets both the Neh2 and the Neh6 degrons. In common with other chemopreventive agents, NDGA activated the ERK1/2, p38, JNK, and PI3K pathways. By using selective kinase inhibitors we found that PI3K, JNK, and p38 were responsible for the stabilization of Nrf2 and induction of HO-1 by NDGA. To explain how NDGA might up-regulate Nrf2 in a Keap1-independent manner we explored the participation of GSK-3β because it controls the Neh6 phosphodegron. Importantly, NDGA caused inhibitory phosphorylation of GSK-3β at Ser9 and at Thr390, and this was associated with a substantial reduction in Neh6 phosphorylation. Our study demonstrates that NDGA activates Nrf2 through multiple signaling cascades and identifies GSK-3β as an integrator of these signaling pathways and a gatekeeper of Nrf2 stability at the level of the Neh6 phosphodegron.
Collapse
Affiliation(s)
- Ana I Rojo
- Departamento de Bioquímica e Instituto de Investigaciones Biomédicas Alberto Sols UAM-CSIC, Centro de Investigación en Red Sobre Enfermedades Neurodegenerativas, Instituto de Investigación Sanitaria la Paz, Madrid 28029, Spain
| | | | | | | | | | | | | | | |
Collapse
|
42
|
Plank C, Zelphati O, Mykhaylyk O. Magnetically enhanced nucleic acid delivery. Ten years of magnetofection-progress and prospects. Adv Drug Deliv Rev 2011; 63:1300-31. [PMID: 21893135 PMCID: PMC7103316 DOI: 10.1016/j.addr.2011.08.002] [Citation(s) in RCA: 251] [Impact Index Per Article: 19.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2011] [Revised: 08/18/2011] [Accepted: 08/19/2011] [Indexed: 12/28/2022]
Abstract
Nucleic acids carry the building plans of living systems. As such, they can be exploited to make cells produce a desired protein, or to shut down the expression of endogenous genes or even to repair defective genes. Hence, nucleic acids are unique substances for research and therapy. To exploit their potential, they need to be delivered into cells which can be a challenging task in many respects. During the last decade, nanomagnetic methods for delivering and targeting nucleic acids have been developed, methods which are often referred to as magnetofection. In this review we summarize the progress and achievements in this field of research. We discuss magnetic formulations of vectors for nucleic acid delivery and their characterization, mechanisms of magnetofection, and the application of magnetofection in viral and nonviral nucleic acid delivery in cell culture and in animal models. We summarize results that have been obtained with using magnetofection in basic research and in preclinical animal models. Finally, we describe some of our recent work and end with some conclusions and perspectives.
Collapse
|
43
|
High transfection efficiency of neural stem cells with magnetofection. Biotechniques 2011; 50:187-9. [PMID: 21486240 DOI: 10.2144/000113628] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2010] [Accepted: 01/18/2011] [Indexed: 11/23/2022] Open
Abstract
Primary neural stem cells (NSCs) can be cultivated and differentiated in vitro but are difficult to transfect using conventional methods. We describe a simple and rapid magnetofection-based method suitable for the lab bench as well as for high-throughput projects. Our method yields high transfection efficiency and can be used for deciphering the genetic control of neural cell differentiation.
Collapse
|
44
|
Howes MJR, Perry E. The Role of Phytochemicals in the Treatment and Prevention of Dementia. Drugs Aging 2011; 28:439-68. [DOI: 10.2165/11591310-000000000-00000] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
|
45
|
Neuroprotective phenolics in medicinal plants. Arch Pharm Res 2010; 33:1611-32. [DOI: 10.1007/s12272-010-1011-x] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2010] [Revised: 09/02/2010] [Accepted: 09/02/2010] [Indexed: 12/26/2022]
|
46
|
Upregulation of transcription factor NRF2-mediated oxidative stress response pathway in rat brain under short-term chronic hypobaric hypoxia. Funct Integr Genomics 2010; 11:119-37. [PMID: 20922447 DOI: 10.1007/s10142-010-0195-y] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2010] [Revised: 08/06/2010] [Accepted: 09/13/2010] [Indexed: 02/03/2023]
Abstract
Exposure to high altitude (and thus hypobaric hypoxia) induces electrophysiological, metabolic, and morphological modifications in the brain leading to several neurological clinical syndromes. Despite the known fact that hypoxia episodes in brain are a common factor for many neuropathologies, limited information is available on the underlying cellular and molecular mechanisms. In this study, we investigated the temporal effect of short-term (0-12 h) chronic hypobaric hypoxia on global gene expression of rat brain followed by detailed canonical pathway analysis and regulatory network identification. Our analysis revealed significant alteration of 33, 17, 53, 81, and 296 genes (p < 0.05, <1.5-fold) after 0.5, 1, 3, 6, and 12 h of hypoxia, respectively. Biological processes like regulation, metabolic, and transport pathways are temporally activated along with anti- and proinflammatory signaling networks like PI3K/AKT, NF-κB, ERK/MAPK, IL-6 and IL-8 signaling. Irrespective of exposure durations, nuclear factor (erythroid-derived 2)-like 2 (NRF2)-mediated oxidative stress response pathway and genes were detected at all time points suggesting activation of NRF2-ARE antioxidant defense system. The results were further validated by assessing the expression levels of selected genes in temporal as well as brain regions with quantitative RT-PCR and western blot. In conclusion, our whole brain approach with temporal monitoring of gene expression patterns during hypobaric hypoxia has resulted in (1) deciphering sequence of pathways and signaling networks activated during onset of hypoxia, and (2) elucidation of NRF2-orchestrated antioxidant response as a major intrinsic defense mechanism. The results of this study will aid in better understanding and management of hypoxia-induced brain pathologies.
Collapse
|
47
|
Wei X, Guo W, Wu S, Wang L, Huang P, Liu J, Fang B. Oxidative stress in NSC-741909-induced apoptosis of cancer cells. J Transl Med 2010; 8:37. [PMID: 20398386 PMCID: PMC2873373 DOI: 10.1186/1479-5876-8-37] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2009] [Accepted: 04/16/2010] [Indexed: 02/02/2023] Open
Abstract
Background NSC-741909 is a novel anticancer agent that can effectively suppress the growth of several cell lines derived from lung, colon, breast, ovarian, and kidney cancers. We recently showed that NSC-741909-induced antitumor activity is associated with sustained Jun N-terminal kinase (JNK) activation, resulting from suppression of JNK dephosphorylation associated with decreased protein levels of MAPK phosphatase-1. However, the mechanisms of NSC-741909-induced antitumor activity remain unclear. Because JNK is frequently activated by oxidative stress in cells, we hypothesized that reactive oxygen species (ROS) may be involved in the suppression of JNK dephosphorylation and the cytotoxicity of NSC-741909. Methods The generation of ROS was measured by using the cell-permeable nonfluorescent compound H2DCF-DA and flow cytometry analysis. Cell viability was determined by sulforhodamine B assay. Western blot analysis, immunofluorescent staining and flow cytometry assays were used to determine apoptosis and molecular changes induced by NSC-741909. Results Treatment with NSC-741909 induced robust ROS generation and marked MAPK phosphatase-1 and -7 clustering in NSC-741909-sensitive, but not resistant cell lines, in a dose- and time-dependent manner. The generation of ROS was detectable as early as 30 min and ROS levels were as high as 6- to 8-fold above basal levels after treatment. Moreover, the NSC-741909-induced ROS generation could be blocked by pretreatment with antioxidants, such as nordihydroguaiaretic acid, aesculetin, baicalein, and caffeic acid, which in turn, inhibited the NSC-741909-induced JNK activation and apoptosis. Conclusion Our results demonstrate that the increased ROS production was associated with NSC-741909-induced antitumor activity and that ROS generation and subsequent JNK activation is one of the primary mechanisms of NSC-741909-mediated antitumor cell activity.
Collapse
Affiliation(s)
- Xiaoli Wei
- Department of Biochemical Pharmacology, Beijing Institute of Pharmacology and Toxicology, Beijing 100850, China
| | | | | | | | | | | | | |
Collapse
|
48
|
Pedraza-Chaverrí J, Reyes-Fermín LM, Nolasco-Amaya EG, Orozco-Ibarra M, Medina-Campos ON, González-Cuahutencos O, Rivero-Cruz I, Mata R. ROS scavenging capacity and neuroprotective effect of α-mangostin against 3-nitropropionic acid in cerebellar granule neurons. ACTA ACUST UNITED AC 2009; 61:491-501. [DOI: 10.1016/j.etp.2008.11.002] [Citation(s) in RCA: 97] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2008] [Revised: 10/25/2008] [Accepted: 11/12/2008] [Indexed: 12/16/2022]
|
49
|
Cuadrado A, Moreno-Murciano P, Pedraza-Chaverri J. The transcription factor Nrf2 as a new therapeutic target in Parkinson's disease. Expert Opin Ther Targets 2009; 13:319-29. [DOI: 10.1517/13543780802716501] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
|