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Hassanein EHM, Althagafy HS, Baraka MA, Abd-Alhameed EK, Ibrahim IM, Abd El-Maksoud MS, Mohamed NM, Ross SA. The promising antioxidant effects of lignans: Nrf2 activation comes into view. NAUNYN-SCHMIEDEBERG'S ARCHIVES OF PHARMACOLOGY 2024; 397:6439-6458. [PMID: 38695909 PMCID: PMC11422461 DOI: 10.1007/s00210-024-03102-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Accepted: 04/11/2024] [Indexed: 09/25/2024]
Abstract
Lignans are biologically active compounds widely distributed, recognized, and identified in seeds, fruits, and vegetables. Lignans have several intriguing bioactivities, including anti-inflammatory, antioxidant, and anticancer activities. Nrf2 controls the expression of many cytoprotective genes. Activation of Nrf2 is a promising therapeutic approach for treating and preventing diseases resulting from oxidative injury and inflammation. Lignans have been demonstrated to stimulate Nrf2 signaling in a variety of in vitro and experimental animal models. The review summarizes the findings of fourteen lignans (Schisandrin A, Schisandrin B, Schisandrian C, Magnolol, Honokiol, Sesamin, Sesamol, Sauchinone, Pinoresinol, Phyllanthin, Nectandrin B, Isoeucommin A, Arctigenin, Lariciresinol) as antioxidative and anti-inflammatory agents, affirming how Nrf2 activation affects their pharmacological effects. Therefore, lignans may offer therapeutic candidates for the treatment and prevention of various diseases and may contribute to the development of effective Nrf2 modulators.
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Affiliation(s)
- Emad H M Hassanein
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, 71524, Egypt
| | - Hanan S Althagafy
- Department of Biochemistry, Faculty of Science, University of Jeddah, Jeddah, Saudi Arabia
| | - Mohammad A Baraka
- Faculty of Pharmacy, Al-Azhar University, Assiut Branch, Assiut, 71524, Egypt
| | - Esraa K Abd-Alhameed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Islam M Ibrahim
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Mostafa S Abd El-Maksoud
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Beni-Suef University, Beni-Suef, Egypt
| | - Nesma M Mohamed
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut, 71526, Egypt.
- Department of Pharmacognosy, Faculty of Pharmacy, Badr University in Assiut, Assiut, 77771, Egypt.
| | - Samir A Ross
- National Center for Natural Products Research, Research Institute of Pharmaceutical Sciences, School of Pharmacy, The University of Mississippi, University, MS, 38677, USA
- Department of BioMolecular Sciences, Division of Pharmacognosy, School of Pharmacy, University of Mississippi, University, MS, 38677, USA
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2
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Kwon DA, Bak SB, Kim YS, Kim SK, Lee HS. Antioxidant and Anti-Fatigue Effects of a Standardized Botanical Extract Fraction (HemoHIM) in Forced-Exercised Aged Mice. J Med Food 2024; 27:502-509. [PMID: 38669056 DOI: 10.1089/jmf.2023.k.0234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2024] Open
Abstract
HemoHIM is a standardized medicinal herbal preparation consisting of extracts of Angelica gigas Nakai, Cnidium officinale Makino, and Paeonia lactiflora Pallas that possesses immune regulatory activities. This study aimed to research the potential antioxidant effects of HemoHIM and its capacity for reducing fatigue in aged mice subjected to forced exercise. After administering HemoHIM 125 (500 mg/kg orally) for 4 weeks in 8-month-old female C57BL/6 mice (4 groups of 10 mice), various parameters were evaluated. The analyses revealed that HemoHIM enhanced swimming time and grip strength. In addition, it significantly reduced serum lactate levels and increased liver glutathione peroxidase (GPx) levels after exercise challenge. The expression levels of antioxidant enzymes and factors, including nuclear factor erythroid 2-related factor-2 (Nrf-2), heme oxygenase 1, superoxide dismutase, GPx, and glutathione reductase, were significantly higher in liver and muscle tissues of mice treated with HemoHIM. These results indicate that HemoHIM might function as an anti-fatigue and antioxidant agent by modulating the Nrf-2 signaling pathway.
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Affiliation(s)
- Da-Ae Kwon
- G-Project Team, Food Science R&D Center, Kolmar BNH Co., Ltd., Seoul, Korea
| | - Su-Bin Bak
- G-Project Team, Food Science R&D Center, Kolmar BNH Co., Ltd., Seoul, Korea
| | - Yong Sang Kim
- Food Safety Team, Kolmar BNH Co., Ltd., Sejong-Si, Korea
| | - Seul-Ki Kim
- Center for Nonclinical Development, HK inno.N, Gyeonggi-do, Korea
| | - Hak Sung Lee
- G-Project Team, Food Science R&D Center, Kolmar BNH Co., Ltd., Seoul, Korea
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3
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Haider S, Chakraborty S, Chowdhury G, Chakrabarty A. Opposing Interplay between Nuclear Factor Erythroid 2-Related Factor 2 and Forkhead BoxO 1/3 is Responsible for Sepantronium Bromide's Poor Efficacy and Resistance in Cancer cells: Opportunity for Combination Therapy in Triple Negative Breast Cancer. ACS Pharmacol Transl Sci 2024; 7:1237-1251. [PMID: 38751638 PMCID: PMC11091984 DOI: 10.1021/acsptsci.3c00279] [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: 10/11/2023] [Revised: 03/29/2024] [Accepted: 04/10/2024] [Indexed: 05/18/2024]
Abstract
Survivin, a cancer-cell-specific multifunctional protein, is regulated by many oncogenic signaling pathways and an effective therapeutic target. Although, several types of survivin-targeting agents have been developed over the past few decades, none of them received clinical approval. This could be because survivin expression is tightly controlled by the feedback interaction between different signaling molecules. Of the several signaling pathways that are known to regulate survivin expression, the phosphatidylinositol 3-kinase/AKT serine-threonine kinase/forkhead boxO (PI3K/AKT/FoxO) pathway is well-known for feedback loops constructed by cross-talk among different molecules. Using sepantronium bromide (YM155), the first of its class of survivin-suppressant, we uncovered the existence of an interesting cross-talk between Nuclear Factor Erythroid 2-Related Factor 2 (NRF2) and FoxO transcription factors that also contributes to YM155 resistance in triple negative breast cancer (TNBC) cells. Pharmacological manipulation to interrupt this interaction not only helped restore/enhance the drug-sensitivity but also prompted effective immune clearance of cancer cells. Because the YM155-induced reactive oxygen species (ROS) initiates this feedback, we believe that it will be occurring for many ROS-producing chemotherapeutic agents. Our work provides a rational explanation for the poor efficacy of YM155 compared to standard chemotherapy in clinical trials. Finally, the triple drug combination approach used herein might help reintroducing YM155 into the clinical pipeline, and given the high survivin expression in TNBC cells in general, it could be effective in treating this subtype of breast cancer.
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Affiliation(s)
- Shaista Haider
- Department
of Life Sciences, Shiv Nadar Institution
of Eminence, Greater Noida Gautam
Buddha Nagar Uttar Pradesh 201314, India
| | - Shayantani Chakraborty
- Department
of Life Sciences, Shiv Nadar Institution
of Eminence, Greater Noida Gautam
Buddha Nagar Uttar Pradesh 201314, India
| | - Goutam Chowdhury
- Independent
Researcher, Greater Noida Gautam Buddha Nagar Uttar Pradesh 201308, India
| | - Anindita Chakrabarty
- Department
of Life Sciences, Shiv Nadar Institution
of Eminence, Greater Noida Gautam
Buddha Nagar Uttar Pradesh 201314, India
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4
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Rosario-Rodríguez LJ, Cantres-Rosario YM, Carrasquillo-Carrión K, Rodríguez-De Jesús AE, Cartagena-Isern LJ, García-Requena LA, Roche-Lima A, Meléndez LM. Quantitative Proteomics Reveal That CB2R Agonist JWH-133 Downregulates NF-κB Activation, Oxidative Stress, and Lysosomal Exocytosis from HIV-Infected Macrophages. Int J Mol Sci 2024; 25:3246. [PMID: 38542221 PMCID: PMC10970132 DOI: 10.3390/ijms25063246] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2024] [Revised: 03/11/2024] [Accepted: 03/12/2024] [Indexed: 04/13/2024] Open
Abstract
HIV-associated neurocognitive disorders (HAND) affect 15-55% of HIV-positive patients and effective therapies are unavailable. HIV-infected monocyte-derived macrophages (MDM) invade the brain of these individuals, promoting neurotoxicity. We demonstrated an increased expression of cathepsin B (CATB), a lysosomal protease, in monocytes and post-mortem brain tissues of women with HAND. Increased CATB release from HIV-infected MDM leads to neurotoxicity, and their secretion is associated with NF-κB activation, oxidative stress, and lysosomal exocytosis. Cannabinoid receptor 2 (CB2R) agonist, JWH-133, decreases HIV-1 replication, CATB secretion, and neurotoxicity from HIV-infected MDM, but the mechanisms are not entirely understood. We hypothesized that HIV-1 infection upregulates the expression of proteins associated with oxidative stress and that a CB2R agonist could reverse these effects. MDM were isolated from healthy women donors (n = 3), infected with HIV-1ADA, and treated with JWH-133. After 13 days post-infection, cell lysates were labeled by Tandem Mass Tag (TMT) and analyzed by LC/MS/MS quantitative proteomics bioinformatics. While HIV-1 infection upregulated CATB, NF-κB signaling, Nrf2-mediated oxidative stress response, and lysosomal exocytosis, JWH-133 treatment downregulated the expression of the proteins involved in these pathways. Our results suggest that JWH-133 is a potential alternative therapy against HIV-induced neurotoxicity and warrant in vivo studies to test its potential against HAND.
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Affiliation(s)
- Lester J. Rosario-Rodríguez
- Department of Microbiology and Medical Zoology, University of Puerto Rico-Medical Sciences Campus, San Juan 00935, Puerto Rico;
| | - Yadira M. Cantres-Rosario
- Translational Proteomics Center, Center for Collaborative Research in Health Disparities, University of Puerto Rico-Medical Sciences Campus, San Juan 00935, Puerto Rico; (Y.M.C.-R.); (A.E.R.-D.J.)
| | - Kelvin Carrasquillo-Carrión
- Integrated Informatics Core, Center for Collaborative Research in Health Disparities, University of Puerto Rico-Medical Sciences Campus, San Juan 00935, Puerto Rico; (K.C.-C.); (A.R.-L.)
| | - Ana E. Rodríguez-De Jesús
- Translational Proteomics Center, Center for Collaborative Research in Health Disparities, University of Puerto Rico-Medical Sciences Campus, San Juan 00935, Puerto Rico; (Y.M.C.-R.); (A.E.R.-D.J.)
| | - Luz J. Cartagena-Isern
- Department of Biology, University of Puerto Rico-Río Piedras Campus, San Juan 00925, Puerto Rico; (L.J.C.-I.); (L.A.G.-R.)
| | - Luis A. García-Requena
- Department of Biology, University of Puerto Rico-Río Piedras Campus, San Juan 00925, Puerto Rico; (L.J.C.-I.); (L.A.G.-R.)
| | - Abiel Roche-Lima
- Integrated Informatics Core, Center for Collaborative Research in Health Disparities, University of Puerto Rico-Medical Sciences Campus, San Juan 00935, Puerto Rico; (K.C.-C.); (A.R.-L.)
| | - Loyda M. Meléndez
- Department of Microbiology and Medical Zoology, University of Puerto Rico-Medical Sciences Campus, San Juan 00935, Puerto Rico;
- Translational Proteomics Center, Center for Collaborative Research in Health Disparities, University of Puerto Rico-Medical Sciences Campus, San Juan 00935, Puerto Rico; (Y.M.C.-R.); (A.E.R.-D.J.)
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5
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Luan R, Luo M, Ding D, Su X, Yang J. Zinc deficiency increases lung inflammation and fibrosis in obese mice by promoting oxidative stress. Biochim Biophys Acta Gen Subj 2024; 1868:130518. [PMID: 37951369 DOI: 10.1016/j.bbagen.2023.130518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2023] [Revised: 10/22/2023] [Accepted: 11/06/2023] [Indexed: 11/14/2023]
Abstract
BACKGROUND Zinc deficiency can lead to multiple organ damage. In this study, we investigated the effects of zinc deficiency on obesity-related lung damage. METHODS C57BL/6 J mice were fed a diet with differing amounts of zinc and fat over a 6-month period. Palmitic acid was used to stimulate A549 cells to construct a high-fat alveolar epithelial cell model. Western blotting and histopathological staining were performed on animal tissues. Nuclear expression of nuclear factor erythroid 2-related factor 2 (Nrf2) was detected in cultured cells. A reactive oxygen species (ROS) assay kit was used to detect intracellular ROS. Furthermore, Nrf2 siRNA was used to examine zinc deficiency effects on A549 cells. RESULTS Pathological results showed significant damage to the lung structure of mice in the high-fat and low-zinc diet group, with a significant increase in the expression of inflammatory (IL-6, TNF-α) and fibrosis (TGFβ1, PAI-1) factors, combined with a decrease in the expression of Nrf2, HO-1 and NQO1 in the antioxidant pathway. In A549 cells, high fat and low zinc levels aggravated ROS production. Western blot and immunofluorescence results showed that high fat and zinc deficiency inhibited Nrf2 expression. After Nrf2-specific knockout in A549 cells, the protective effect of zinc on oxidant conditions induced by high fat was reduced. Phosphorylated Akt and PI3K levels were downregulated on the high-fat and low-zinc group compared with the high-fat group. CONCLUSIONS Zinc attenuated lung oxidative damage in obesity-related lung injury and Nrf2 activation is one of the important mechanisms of this effect. GENERAL SIGNIFICANCE Regulating zinc homeostasis through dietary modifications or supplemental nutritional therapy can contribute to the prevention and treatment of obesity-related lung injury.
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Affiliation(s)
- Rumei Luan
- Department of Respiratory Medicine, the Second Hospital of Jilin University, Changchun, Jilin, China
| | - Manyu Luo
- Department of Nephrology, The Second Hospital of Jilin University, Changchun, Jilin, China
| | - Dongyan Ding
- Department of Respiratory Medicine, the Second Hospital of Jilin University, Changchun, Jilin, China
| | - Xin Su
- Department of Respiratory Medicine, the Second Hospital of Jilin University, Changchun, Jilin, China
| | - Junling Yang
- Department of Respiratory Medicine, the Second Hospital of Jilin University, Changchun, Jilin, China.
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Yang L, Zhou D, Cao J, Shi F, Zeng J, Zhang S, Yan G, Chen Z, Chen B, Guo Y, Lin X. Revealing the biological mechanism of acupuncture in alleviating excessive inflammatory responses and organ damage in sepsis: a systematic review. Front Immunol 2023; 14:1242640. [PMID: 37753078 PMCID: PMC10518388 DOI: 10.3389/fimmu.2023.1242640] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 08/15/2023] [Indexed: 09/28/2023] Open
Abstract
Sepsis is a systemic inflammation caused by a maladjusted host response to infection. In severe cases, it can cause multiple organ dysfunction syndrome (MODS) and even endanger life. Acupuncture is widely accepted and applied in the treatment of sepsis, and breakthroughs have been made regarding its mechanism of action in recent years. In this review, we systematically discuss the current clinical applications of acupuncture in the treatment of sepsis and focus on the mechanisms of acupuncture in animal models of systemic inflammation. In clinical research, acupuncture can not only effectively inhibit excessive inflammatory reactions but also improve the immunosuppressive state of patients with sepsis, thus maintaining immune homeostasis. Mechanistically, a change in the acupoint microenvironment is the initial response link for acupuncture to take effect, whereas PROKR2 neurons, high-threshold thin nerve fibres, cannabinoid CB2 receptor (CB2R) activation, and Ca2+ influx are the key material bases. The cholinergic anti-inflammatory pathway of the vagus nervous system, the adrenal dopamine anti-inflammatory pathway, and the sympathetic nervous system are key to the transmission of acupuncture information and the inhibition of systemic inflammation. In MODS, acupuncture protects against septic organ damage by inhibiting excessive inflammatory reactions, resisting oxidative stress, protecting mitochondrial function, and reducing apoptosis and tissue or organ damage.
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Affiliation(s)
- Lin Yang
- School of Acupuncture-Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Dan Zhou
- School of Acupuncture-Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jiaojiao Cao
- School of Acupuncture-Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Fangyuan Shi
- School of Acupuncture-Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Jiaming Zeng
- School of Acupuncture-Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Siqi Zhang
- Ministry of Education, State Key Laboratory of Component-Based Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Guorui Yan
- The First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Pharmacy Department, Tianjin, China
| | - Zhihan Chen
- School of Acupuncture-Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Bo Chen
- School of Acupuncture-Moxibustion and Tuina, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Yi Guo
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Xiaowei Lin
- Research Center of Experimental Acupuncture Science, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Tianjin Key Laboratory of Modern Chinese Medicine Theory of Innovation and Application, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- School of Traditional Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
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7
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Moossavi M, Lu X, Herrmann J, Xu X. Molecular mechanisms of anthracycline induced cardiotoxicity: Zebrafish come into play. Front Cardiovasc Med 2023; 10:1080299. [PMID: 36970353 PMCID: PMC10036604 DOI: 10.3389/fcvm.2023.1080299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 02/22/2023] [Indexed: 03/12/2023] Open
Abstract
Anthracyclines are among the most potent chemotherapeutics; however, cardiotoxicity significantly restricts their use. Indeed, anthracycline-induced cardiotoxicity (AIC) fares among the worst types of cardiomyopathy, and may only slowly and partially respond to standard heart failure therapies including β-blockers and ACE inhibitors. No therapy specifically designed to treat anthracycline cardiomyopathy at present, and neither is it known if any such strategy could be developed. To address this gap and to elucidate the molecular basis of AIC with a therapeutic goal in mind, zebrafish has been introduced as an in vivo vertebrate model about a decade ago. Here, we first review our current understanding of the basic molecular and biochemical mechanisms of AIC, and then the contribution of zebrafish to the AIC field. We summarize the generation of embryonic zebrafish AIC models (eAIC) and their use for chemical screening and assessment of genetic modifiers, and then the generation of adult zebrafish AIC models (aAIC) and their use for discovering genetic modifiers via forward mutagenesis screening, deciphering spatial-temporal-specific mechanisms of modifier genes, and prioritizing therapeutic compounds via chemical genetic tools. Several therapeutic target genes and related therapies have emerged, including a retinoic acid (RA)-based therapy for the early phase of AIC and an autophagy-based therapy that, for the first time, is able to reverse cardiac dysfunction in the late phase of AIC. We conclude that zebrafish is becoming an important in vivo model that would accelerate both mechanistic studies and therapeutic development of AIC.
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Affiliation(s)
- Maryam Moossavi
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, United States
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States
| | - Xiaoguang Lu
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, United States
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States
- School of Traditional Chinese Medicine, Beijing University of Chinese Medicine, Beijing, China
| | - Joerg Herrmann
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States
| | - Xiaolei Xu
- Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN, United States
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, MN, United States
- Correspondence: Xiaolei Xu
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Kryszczuk M, Kowalczuk O. Significance of NRF2 in physiological and pathological conditions an comprehensive review. Arch Biochem Biophys 2022; 730:109417. [DOI: 10.1016/j.abb.2022.109417] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 09/22/2022] [Accepted: 09/24/2022] [Indexed: 11/30/2022]
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Research Progress on Targeted Antioxidant Therapy and Vitiligo. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1821780. [PMID: 35320978 PMCID: PMC8938057 DOI: 10.1155/2022/1821780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Revised: 12/19/2021] [Accepted: 01/22/2022] [Indexed: 12/14/2022]
Abstract
Vitiligo is a common acquired depigmenting disease characterized by the loss of functional melanocytes and epidermal melanin. Vitiligo has a long treatment cycle and slow results, which is one of the most difficult challenges for skin diseases. Oxidative stress plays an important role as an initiating and driving factor in the pathogenesis of vitiligo. Antioxidant therapy has recently become a research hotspot in vitiligo treatment. A series of antioxidants has been discovered and applied to the treatment of vitiligo, which has returned satisfactory results. This article briefly reviews the relationship between oxidative stress and vitiligo. We also describe the progress of targeted antioxidant therapy in vitiligo, with the aim of providing a reference for new drug development and treatment options for this condition.
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10
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Cruz-Gregorio A, Aranda-Rivera AK, Pedraza-Chaverri J. Nuclear factor erythroid 2-related factor 2 in human papillomavirus-related cancers. Rev Med Virol 2021; 32:e2308. [PMID: 34694662 DOI: 10.1002/rmv.2308] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2021] [Revised: 10/06/2021] [Accepted: 10/11/2021] [Indexed: 01/04/2023]
Abstract
High-risk human papillomavirus (HR-HPV) infection is a necessary cause for the development of cervical cancer. Moreover, HR-HPV is also associated with cancers in the anus, vagina, vulva, penis and oropharynx. HR-HPVs target and modify the function of different cell biomolecules, such as glucose, amino acids, lipids and transcription factors (TF), such as p53, nuclear factor erythroid 2-related factor 2 (Nrf2), among others. The latter is a master TF that maintains redox homeostasis. Nrf2 also induces the transcription of genes associated with cell detoxification. Since both processes are critical for cell physiology, Nrf2 deregulation is associated with cancer development. Nrf2 is a crucial molecule in HPV-related cancer development but underexplored. Moreover, Nrf2 activation is also associated with resistance to chemotherapy and radiotherapy in these cancers. This review focusses on the importance of Nrf2 during HPV-related cancer development, resistance to therapy and potential therapies associated with Nrf2 as a molecular target.
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Affiliation(s)
- Alfredo Cruz-Gregorio
- Departmento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico
| | - Ana Karina Aranda-Rivera
- Departmento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico
| | - José Pedraza-Chaverri
- Departmento de Biología, Facultad de Química, Universidad Nacional Autónoma de México, Ciudad de Mexico, Mexico
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11
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Nie P, Bai X, Lou Y, Zhu Y, Jiang S, Zhang L, Tian N, Luo P, Li B. Human umbilical cord mesenchymal stem cells reduce oxidative damage and apoptosis in diabetic nephropathy by activating Nrf2. Stem Cell Res Ther 2021; 12:450. [PMID: 34380544 PMCID: PMC8356418 DOI: 10.1186/s13287-021-02447-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2021] [Accepted: 06/07/2021] [Indexed: 12/31/2022] Open
Abstract
Background Mesenchymal stem cells (MSCs) have a therapeutic effect on diabetic nephropathy (DN) but the underlying mechanism remains unclear. This study was conducted to investigate whether human umbilical cord-MSCs (hUCMSCs) can induce oxidative damage and apoptosis by activating Nrf2. Methods We used a type 2 diabetic rat model and a high-glucose and fat-stimulated human glomerular mesangial cell (hGMC) model. Western blotting, RT-qPCR, and TUNEL staining were performed on animal tissues and cultured cells. Nuclear expression of Nrf2 was detected in the renal tissue. Furthermore, Nrf2 siRNA was used to examine the effects of hUCMSCs on hGMCs. Finally, the effect of hUCMSCs on the Nrf2 upstream signalling pathway was investigated. Results After treatment with hUCMSCs, Nrf2 showed increased expression and nuclear translocation. After Nrf2-specific knockout in hGMCs, the protective effect of hUCMSCs on apoptosis induced by high-glucose and fat conditions was reduced. Activation of the PI3K signalling pathway may be helpful for ameliorating DN using hUCMSCs. Conclusions hUCMSCs attenuated renal oxidative damage and apoptosis in type 2 diabetes mellitus and Nrf2 activation is one of the important mechanisms of this effect. hUCMSCs show potential as drug targets for DN. Supplementary Information The online version contains supplementary material available at 10.1186/s13287-021-02447-x.
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Affiliation(s)
- Ping Nie
- Department of Nephropathy, The Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Xue Bai
- Department of Nephropathy, The Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Yan Lou
- Department of Nephropathy, The Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Yuexin Zhu
- Department of Nephropathy, The Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Shan Jiang
- Department of Nephropathy, The Second Hospital of Jilin University, Changchun, Jilin Province, China
| | - Lina Zhang
- Research and Development Department, Jilin Tuohua Biotechnology Co., Ltd., Changchun, Jilin Province, China
| | - Na Tian
- Research and Development Department, Jilin Tuohua Biotechnology Co., Ltd., Changchun, Jilin Province, China
| | - Ping Luo
- Department of Nephropathy, The Second Hospital of Jilin University, Changchun, Jilin Province, China.
| | - Bing Li
- Department of Nephropathy, The Second Hospital of Jilin University, Changchun, Jilin Province, China.
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12
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Villavicencio Tejo F, Quintanilla RA. Contribution of the Nrf2 Pathway on Oxidative Damage and Mitochondrial Failure in Parkinson and Alzheimer's Disease. Antioxidants (Basel) 2021; 10:1069. [PMID: 34356302 PMCID: PMC8301100 DOI: 10.3390/antiox10071069] [Citation(s) in RCA: 50] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/13/2021] [Accepted: 06/16/2021] [Indexed: 12/17/2022] Open
Abstract
The increase in human life expectancy has become a challenge to reduce the deleterious consequences of aging. Nowadays, an increasing number of the population suffer from age-associated neurodegenerative diseases including Parkinson's disease (PD) and Alzheimer's disease (AD). These disorders present different signs of neurodegeneration such as mitochondrial dysfunction, inflammation, and oxidative stress. Accumulative evidence suggests that the transcriptional factor nuclear factor (erythroid-derived 2)-like 2 (Nrf2) plays a vital defensive role orchestrating the antioxidant response in the brain. Nrf2 activation promotes the expression of several antioxidant enzymes that exert cytoprotective effects against oxidative damage and mitochondrial impairment. In this context, several studies have proposed a role of Nrf2 in the pathogenesis of PD and AD. Thus, we consider it important to summarize the ongoing literature related to the effects of the Nrf2 pathway in the context of these diseases. Therefore, in this review, we discuss the mechanisms involved in Nrf2 activity and its connection with mitochondria, energy supply, and antioxidant response in the brain. Furthermore, we will lead our discussion to identify the participation of the Nrf2 pathway in mitochondrial impairment and neurodegeneration present in PD and AD. Finally, we will discuss the therapeutic effects that the Nrf2 pathway activation could have on the cognitive impairment, neurodegeneration, and mitochondrial failure present in PD and AD.
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Affiliation(s)
| | - Rodrigo A Quintanilla
- Laboratory of Neurodegenerative Diseases, Instituto de Ciencias Biomédicas, Facultad de Ciencias de la Salud, Universidad Autónoma de Chile, Santiago 8910060, Chile;
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13
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Cykowiak M, Krajka-Kuźniak V, Baer-Dubowska W. Combinations of Phytochemicals More Efficiently than Single Components Activate Nrf2 and Induce the Expression of Antioxidant Enzymes in Pancreatic Cancer Cells. Nutr Cancer 2021; 74:996-1011. [PMID: 34120541 DOI: 10.1080/01635581.2021.1933097] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2020] [Revised: 01/25/2021] [Accepted: 04/30/2021] [Indexed: 12/21/2022]
Abstract
Cancer prevention particularly related to aging can be improved by the use of phytochemicals combinations. In this study, we evaluated the effect of phenethyl isothiocyanate (PEITC), xanthohumol (XAN), indole-3-carbinol (I3C), and resveratrol (RES) and their combinations on the Nrf2 signaling pathway. Human pancreatic cancer cells MIA-Pa-Ca-2 were treated with the phytochemicals alone or their equimolar mixture for 24 h and activation of Nrf2 and expression of its target genes were evaluated. Phytochemicals alone enhanced Nrf2 activation and expression, but their combinations were more efficient. The mixture of XAN and PEITC was found to be the most potent modulator of the Nrf2 pathway. Moreover, increased levels of P-Nrf2 and P-JNK and decreased level of P-GSK-3β suggested possible activation of Nrf2 through modulation of these kinases. The combinations of XAN with PEITC and RES with PEITC increased mostly the expression of SOD, GSTP, CAT, and GPx. XAN and PEITC mixture induced the cell cycle arrest in G0/G1 phase and increased apoptotic and autophagy markers. These results indicate that combinations of phytochemicals resembling that occurring in natural diets may efficiently modulate the signaling pathways, which proper function is important for pancreatic cancer prophylaxis or improving the results of conventional therapy.
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Affiliation(s)
- Marta Cykowiak
- Department of Pharmaceutical Biochemistry, Poznan University of Medical Sciences, Poznań, Poland
| | - Violetta Krajka-Kuźniak
- Department of Pharmaceutical Biochemistry, Poznan University of Medical Sciences, Poznań, Poland
| | - Wanda Baer-Dubowska
- Department of Pharmaceutical Biochemistry, Poznan University of Medical Sciences, Poznań, Poland
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14
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Bichiou H, Bouabid C, Rabhi I, Guizani-Tabbane L. Transcription Factors Interplay Orchestrates the Immune-Metabolic Response of Leishmania Infected Macrophages. Front Cell Infect Microbiol 2021; 11:660415. [PMID: 33898331 PMCID: PMC8058464 DOI: 10.3389/fcimb.2021.660415] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2021] [Accepted: 03/22/2021] [Indexed: 12/24/2022] Open
Abstract
Leishmaniasis is a group of heterogenous diseases considered as an important public health problem in several countries. This neglected disease is caused by over 20 parasite species of the protozoa belonging to the Leishmania genus and is spread by the bite of a female phlebotomine sandfly. Depending on the parasite specie and the immune status of the patient, leishmaniasis can present a wide spectrum of clinical manifestations. As an obligate intracellular parasite, Leishmania colonize phagocytic cells, mainly the macrophages that orchestrate the host immune response and determine the fate of the infection. Once inside macrophages, Leishmania triggers different signaling pathways that regulate the immune and metabolic response of the host cells. Various transcription factors regulate such immune-metabolic responses and the associated leishmanicidal and inflammatory reaction against the invading parasite. In this review, we will highlight the most important transcription factors involved in these responses, their interactions and their impact on the establishment and the progression of the immune response along with their effect on the physiopathology of the disease.
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Affiliation(s)
- Haifa Bichiou
- Laboratory of Medical Parasitology, Biotechnology and Biomolecules (PMBB), Institut Pasteur de Tunis, Tunis, Tunisia.,Faculty of Sciences of Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Cyrine Bouabid
- Laboratory of Medical Parasitology, Biotechnology and Biomolecules (PMBB), Institut Pasteur de Tunis, Tunis, Tunisia.,Faculty of Sciences of Tunis, Université de Tunis El Manar, Tunis, Tunisia
| | - Imen Rabhi
- Laboratory of Medical Parasitology, Biotechnology and Biomolecules (PMBB), Institut Pasteur de Tunis, Tunis, Tunisia.,Biotechnology Department, Higher Institute of Biotechnology at Sidi-Thabet (ISBST), Biotechpole Sidi-Thabet- University of Manouba, Tunis, Tunisia
| | - Lamia Guizani-Tabbane
- Laboratory of Medical Parasitology, Biotechnology and Biomolecules (PMBB), Institut Pasteur de Tunis, Tunis, Tunisia
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15
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Tessier SN, Breedon SA, Storey KB. Modulating Nrf2 transcription factor activity: Revealing the regulatory mechanisms of antioxidant defenses during hibernation in 13-lined ground squirrels. Cell Biochem Funct 2021; 39:623-635. [PMID: 33624895 DOI: 10.1002/cbf.3627] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 01/22/2021] [Accepted: 01/26/2021] [Indexed: 11/09/2022]
Abstract
Mammalian hibernators undergo major behavioural, physiological and biochemical changes to survive hypothermia, ischaemia-reperfusion and finite fuel reserves during days or weeks of continuous torpor. During hibernation, the 13-lined ground squirrel (Ictidomys tridecemlineatus) undergoes a global suppression of energetically expensive processes such as transcription and translation, while selectively upregulating certain genes/proteins to mitigate torpor-related damage. Antioxidant defenses are critical for preventing damage caused by reactive oxygen species (ROS) during torpor and arousal, and Nrf2 is a critical regulator of these antioxidant genes. This study analysed the relative protein expression levels of Nrf2, KEAP1, small Mafs (MafF, MafK and MafG) and catalase and the regulation of Nrf2 transcription factors by post-translational modifications (PTMs) and protein-protein interactions with a negative regulator (KEAP1) during hibernation. It was found that a significant increase in MafK during late torpor predicated an increase in relative Nrf2 and catalase levels seen in arousal. Additionally, Nrf2-KEAP1 protein-protein interactions and Nrf2 PTMs, including serine phosphorylation and lysine acetylation, were responsive to cycles of torpor-arousal with peak responses occurring during arousal. These peaks seen during arousal correspond to a surge in oxygen consumption, which causes increased ROS production. Thus, these regulatory mechanisms could be important during hibernation because they provide mechanisms for mitigating the deleterious effects of oxidative stress by modifying Nrf2 expression and function in an energetically inexpensive manner.
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Affiliation(s)
- Shannon N Tessier
- Institute of Biochemistry and Department of Biology, Carleton University, Ottawa, Ontario, Canada.,BioMEMS Resource Center & Center for Engineering in Medicine and Surgery, Massachusetts General Hospital & Harvard Medical School, Charlestown, Massachusetts, USA
| | - Sarah A Breedon
- Institute of Biochemistry and Department of Biology, Carleton University, Ottawa, Ontario, Canada
| | - Kenneth B Storey
- Institute of Biochemistry and Department of Biology, Carleton University, Ottawa, Ontario, Canada
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16
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Chen X, Yang JH, Cho SS, Kim JH, Xu J, Seo K, Ki SH. 5-Caffeoylquinic acid ameliorates oxidative stress-mediated cell death via Nrf2 activation in hepatocytes. PHARMACEUTICAL BIOLOGY 2020; 58:999-1005. [PMID: 32981407 PMCID: PMC7534262 DOI: 10.1080/13880209.2020.1818791] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2020] [Revised: 08/12/2020] [Accepted: 08/30/2020] [Indexed: 05/27/2023]
Abstract
CONTEXT 5-Caffeoylquinic acid (5-CQA) is one of the most abundant compounds found in natural foods including coffee. OBJECTIVE We investigated whether 5-CQA had a cytoprotective effect through the NF-E2-related factor 2 (Nrf2)-antioxidant response element (ARE) signalling pathway. MATERIALS AND METHODS Nrf2 activation in response to 5-CQA treatment at the concentration of 10-100 μM is evaluated by Western blotting of Nrf2 and ARE reporter gene assay as well as its target gene expression in HepG2 cells. Intracellular reactive oxygen species (ROS) and glutathione (GSH) levels were measured in the tert-butyl hydroperoxide-induced hepatocytes to examined cytoprotective effect of 5-CQA (10-100 μM). The specific role of 5-CQA on Nrf2 activation was examined using Nrf2 knockout cells or Nrf2 specific inhibitor, ML-385. RESULTS Nuclear translocation of Nrf2 is increased by 5-CQA in HepG2 cells which peaked at 6 h. Consequently, 5-CQA significantly increases the ARE reporter gene activity and downstream antioxidant proteins, including glutamate cysteine ligase (GCL), hemeoxygenase-1 (HO-1), NAD(P)H quinone oxidoreductase 1, and Sestrin2. Nrf2 deficiency or inhibition completely antagonized ability of 5-CQA to induce HO-1 and GCL expression. Cells pre-treated with 5-CQA were rescued from tert-butyl hydroperoxide-induced ROS production and GSH depletion. Nrf2 activation by 5-CQA was due to increased phosphorylation of MAPKs, AMPK and PKCδ. DISCUSSION AND CONCLUSIONS Taken together, our results demonstrate that as a novel Nrf2 activator, 5-CQA, may be a promising candidate against oxidative stress-mediated liver injury. Additional efforts are needed to assess 5-CQA, as a potential therapeutic in liver diseases in vivo and in humans.
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Affiliation(s)
- XiQiang Chen
- College of Pharmacy, Chosun University, Gwangju, Republic of Korea
- Biology Institute, Qilu University of Technology (Shandong Academy of Sciences), Jinan, Shandong, China
| | - Ji Hye Yang
- College of Pharmacy, Chosun University, Gwangju, Republic of Korea
- College of Korean Medicine, Dongshin University, Naju, Jeollanam-do, Republic of Korea
| | - Sam Seok Cho
- College of Pharmacy, Chosun University, Gwangju, Republic of Korea
| | - Jae Hoon Kim
- College of Pharmacy, Chosun University, Gwangju, Republic of Korea
| | - JiaQian Xu
- Department of Biochemistry and Molecular Cell Biology, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Kyuhwa Seo
- College of Pharmacy, Chosun University, Gwangju, Republic of Korea
| | - Sung Hwan Ki
- College of Pharmacy, Chosun University, Gwangju, Republic of Korea
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Wei W, Ma N, Fan X, Yu Q, Ci X. The role of Nrf2 in acute kidney injury: Novel molecular mechanisms and therapeutic approaches. Free Radic Biol Med 2020; 158:1-12. [PMID: 32663513 DOI: 10.1016/j.freeradbiomed.2020.06.025] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Revised: 05/24/2020] [Accepted: 06/11/2020] [Indexed: 12/13/2022]
Abstract
Acute kidney injury (AKI) is a common clinical syndrome that is related to high morbidity and mortality. Oxidative stress, including the production of reactive oxygen species (ROS), appears to be the main element in the occurrence of AKI and the cause of the progression of chronic kidney disease (CKD) into end-stage renal disease (ESRD). Nuclear factor erythroid 2 related factor 2 (Nrf2) is a significant regulator of redox balance that has been shown to improve kidney disease by eliminating ROS. To date, researchers have found that the use of Nrf2-activated compounds can effectively reduce ROS, thereby preventing or retarding the progression of various types of AKI. In this review, we summarized the molecular mechanisms of Nrf2 and ROS in AKI and described the latest findings on the therapeutic potential of Nrf2 activators in various types of AKI.
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Affiliation(s)
- Wei Wei
- Department of Urology, The First Hospital, Jilin University, Changchun, China
| | - Ning Ma
- Department of Urology, The First Hospital, Jilin University, Changchun, China
| | - Xiaoye Fan
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China
| | - Qinlei Yu
- Jilin Provincial Animal Disease Control Center, 4510 Xi'an Road, Changchun, 130062, China
| | - Xinxin Ci
- Institute of Translational Medicine, The First Hospital of Jilin University, Changchun, China.
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18
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Di Pietro C, Öz HH, Murray TS, Bruscia EM. Targeting the Heme Oxygenase 1/Carbon Monoxide Pathway to Resolve Lung Hyper-Inflammation and Restore a Regulated Immune Response in Cystic Fibrosis. Front Pharmacol 2020; 11:1059. [PMID: 32760278 PMCID: PMC7372134 DOI: 10.3389/fphar.2020.01059] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Accepted: 06/30/2020] [Indexed: 12/11/2022] Open
Abstract
In individuals with cystic fibrosis (CF), lung hyper-inflammation starts early in life and is perpetuated by mucus obstruction and persistent bacterial infections. The continuous tissue damage and scarring caused by non-resolving inflammation leads to bronchiectasis and, ultimately, respiratory failure. Macrophages (MΦs) are key regulators of immune response and host defense. We and others have shown that, in CF, MΦs are hyper-inflammatory and exhibit reduced bactericidal activity. Thus, MΦs contribute to the inability of CF lung tissues to control the inflammatory response or restore tissue homeostasis. The non-resolving hyper-inflammation in CF lungs is attributed to an impairment of several signaling pathways associated with resolution of the inflammatory response, including the heme oxygenase-1/carbon monoxide (HO-1/CO) pathway. HO-1 is an enzyme that degrades heme groups, leading to the production of potent antioxidant, anti-inflammatory, and bactericidal mediators, such as biliverdin, bilirubin, and CO. This pathway is fundamental to re-establishing cellular homeostasis in response to various insults, such as oxidative stress and infection. Monocytes/MΦs rely on abundant induction of the HO-1/CO pathway for a controlled immune response and for potent bactericidal activity. Here, we discuss studies showing that blunted HO-1 activation in CF-affected cells contributes to hyper-inflammation and defective host defense against bacteria. We dissect potential cellular mechanisms that may lead to decreased HO-1 induction in CF cells. We review literature suggesting that induction of HO-1 may be beneficial for the treatment of CF lung disease. Finally, we discuss recent studies highlighting how endogenous HO-1 can be induced by administration of controlled doses of CO to reduce lung hyper-inflammation, oxidative stress, bacterial infection, and dysfunctional ion transport, which are all hallmarks of CF lung disease.
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Affiliation(s)
| | | | | | - Emanuela M. Bruscia
- Department of Pediatrics, Yale University School of Medicine, New Haven, CT, United States
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Abstract
FGF21 (fibroblast growth factor 21) is a regulator of metabolism and performs an important role in glucose and lipid metabolism and the maintenance of energy balance. FGF21 is principally expressed in the liver, but it can also be found in the pancreas, skeletal muscle, and adipose tissue. It is known that levels of serum FGF21 are significantly elevated in obese, insulin-resistant patients, and those with metabolic syndrome. Elevated levels of FGF21 in serum during the early stages of various metabolic diseases are considered a compensatory response by the organism. Therefore, FGF21 is considered a hormone in response to stress and an early diagnostic marker of disease. Diabetic cardiomyopathy is a special type of cardiac complication, characterized as a chronic myocardial disorder caused by diabetes. The pathological process includes increased oxidative stress, energy metabolism in myocardial cells, an inflammatory response, and myocardial cell apoptosis. A growing body of evidence suggests that FGF21 has the potential to be an effective drug for the treatment of diabetic cardiomyopathy. Here, we review recent progress on the characteristics of FGF21 in its protective role, especially in pathological processes such as suppressing apoptosis in the myocardium, reducing inflammation in cardiomyocytes, reducing oxidative stress, and promoting fatty acid oxidation. In addition, we explore the possibility that diabetic cardiomyopathy can be delayed through the application of FGF21, providing possible therapeutic targets of the disease.
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Affiliation(s)
- Xiang Zhang
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Luo Yang
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Xiongfeng Xu
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Fengjuan Tang
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Peng Yi
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Bo Qiu
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China
| | - Yarong Hao
- Department of Geriatrics, Renming Hospital of Wuhan University, Hubei, People's Republic of China.
- Central Laboratory, Renming Hospital of Wuhan University, Hubei, People's Republic of China.
- Division of Metabolic Syndrome, Department of Geriatrics, Renming Hospital of Wuhan University, 99 Zhang Zhidong Road, Wuchang District, Wuhan, 430060, Hubei, China.
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20
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Shen B, Feng H, Cheng J, Li Z, Jin M, Zhao L, Wang Q, Qin H, Liu G. Geniposide alleviates non-alcohol fatty liver disease via regulating Nrf2/AMPK/mTOR signalling pathways. J Cell Mol Med 2020; 24:5097-5108. [PMID: 32293113 PMCID: PMC7205797 DOI: 10.1111/jcmm.15139] [Citation(s) in RCA: 72] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 01/30/2020] [Accepted: 02/12/2020] [Indexed: 12/11/2022] Open
Abstract
Non-alcohol fatty liver disease (NAFLD) is a common disease which causes serious liver damage. Geniposide (GEN), a kind of iridoid glycoside extracted from Gardenia jasminoides fruit, has many biological effects, such as resistance to cell damage and anti-neurodegenerative disorder. Lipid accumulation was obvious in tyloxapol-induced liver and oil acid (OA) with palmitic acid (PA)-induced HepG2 cells compared with the control groups while GEN improved the increasing conditions. GEN significantly lessened the total cholesterol (TC), the triglyceride (TG), low-density lipoprotein (LDL), very low-density lipoprotein (VLDL), myeloperoxidase (MPO), reactive oxygen species (ROS) and increased high-density lipoprotein (HDL), superoxide dismutase (SOD) to response the oxidative stress via activating nuclear factor erythroid-2-related factor 2 (Nrf2), haeme oxygenase (HO)-1 and peroxisome proliferator-activated receptor (PPAR)α which may influence the phosphorylation of adenosine 5'-monophosphate-activated protein kinase (AMPK) signalling pathway in mice and cells. Additionally, GEN evidently decreased the contents of sterol regulatory element-binding proteins (SREBP)-1c, phosphorylation (P)-mechanistic target of rapamycin complex (mTORC), P-S6K, P-S6 and high mobility group protein (HMGB) 1 via inhibiting the expression of phosphoinositide 3-kinase (PI3K), and these were totally abrogated in Nrf2-/- mice. Our study firstly proved the protective effect of GEN on lipid accumulation via enhancing the ability of antioxidative stress and anti-inflammation which were mostly depend on up-regulating the protein expression of Nrf2/HO-1 and AMPK signalling pathways, thereby suppressed the phosphorylation of mTORC and its related protein.
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Affiliation(s)
- Bingyu Shen
- Key Laboratory of ZoonosisMinistry of EducationCollege of Veterinary MedicineJilin UniversityChangchunChina
| | - Haihua Feng
- Key Laboratory of ZoonosisMinistry of EducationCollege of Veterinary MedicineJilin UniversityChangchunChina
| | - Jiaqi Cheng
- Key Laboratory of ZoonosisMinistry of EducationCollege of Veterinary MedicineJilin UniversityChangchunChina
| | - Zheng Li
- Key Laboratory of ZoonosisMinistry of EducationCollege of Veterinary MedicineJilin UniversityChangchunChina
| | - Meiyu Jin
- Key Laboratory of ZoonosisMinistry of EducationCollege of Veterinary MedicineJilin UniversityChangchunChina
| | - Lilei Zhao
- Key Laboratory of ZoonosisMinistry of EducationCollege of Veterinary MedicineJilin UniversityChangchunChina
| | - Qi Wang
- Key Laboratory of ZoonosisMinistry of EducationCollege of Veterinary MedicineJilin UniversityChangchunChina
| | - Haiyan Qin
- Key Laboratory of ZoonosisMinistry of EducationCollege of Veterinary MedicineJilin UniversityChangchunChina
| | - Guowen Liu
- Key Laboratory of ZoonosisMinistry of EducationCollege of Veterinary MedicineJilin UniversityChangchunChina
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21
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Shaping the Nrf2-ARE-related pathways in Alzheimer's and Parkinson's diseases. Ageing Res Rev 2019; 54:100942. [PMID: 31415806 DOI: 10.1016/j.arr.2019.100942] [Citation(s) in RCA: 173] [Impact Index Per Article: 34.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2019] [Revised: 08/02/2019] [Accepted: 08/09/2019] [Indexed: 12/20/2022]
Abstract
A failure in redox homeostasis is a common hallmark of Alzheimer's Disease (AD) and Parkinson's Disease (PD), two age-dependent neurodegenerative disorders (NDD), causing increased oxidative stress, oxidized/damaged biomolecules, altered neuronal function and consequent cell death. Activation of nuclear factor erythroid 2-related factor 2 (Nrf2), a redox-regulated transcription factor, results in upregulation of cytoprotective and antioxidant enzymes/proteins, protecting against oxidative stress. Nrf2 regulation is achieved by various proteins and pathways, at both cytoplasmatic and nuclear level; however, the elaborate network of mechanisms involved in Nrf2 regulation may restrain Nrf2 pathway normal activity. Indeed, altered Nrf2 activity is involved in aging and NDD, such as AD and PD. Therefore, understanding the diversity of Nrf2 control mechanisms and regulatory proteins is of high interest, since more effective NDD therapeutics can be identified. In this review, we first introduce Keap1-Nrf2-ARE structure, function and regulation, with a special focus on the several pathways involved in Nrf2 positive and negative modulation, namely p62, PKC, PI3K/Akt/GSK-3β, NF-kB and p38 MAPK. We then briefly describe the evidences for oxidative stress and Nrf2 pathway deregulation in different stages of NDDs. Finally, we discuss the potential of Nrf2-related pathways as potential therapeutic targets to possibly prevent or slowdown NDD progression.
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22
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CRISPR/Cas9 Editing of Glia Maturation Factor Regulates Mitochondrial Dynamics by Attenuation of the NRF2/HO-1 Dependent Ferritin Activation in Glial Cells. J Neuroimmune Pharmacol 2019; 14:537-550. [PMID: 30810907 DOI: 10.1007/s11481-019-09833-6] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 01/08/2019] [Indexed: 12/26/2022]
Abstract
Microglial cells are brain specific professional phagocytic immune cells that play a crucial role in the inflammation- mediated neurodegeneration especially in Parkinson's disease (PD) and Alzheimer's disease. Glia maturation factor (GMF) is a neuroinflammatory protein abundantly expressed in the brain. We have previously shown that GMF expression is significantly upregulated in the substantia nigra (SN) of PD brains. However, its possible role in PD progression is still not fully understood. The Clustered-Regularly Interspaced Short Palindromic Repeats (CRISPR)-CRISPR Associated (Cas) protein9 (CRISPR/Cas9) system is a simple, rapid and often extremely efficient gene editing tool at desired loci, enabling complete gene knockout or homology directed repair. In this study, we examined the effect of GMF editing by using the CRISPR/Cas9 technique in BV2 microglial cells (hereafter referred to as BV2-G) on oxidative stress and nuclear factor erythroid 2-related factor 2 (NRF2)/Hemeoxygenase1 (HO-1)-dependent ferritin activation after treatment with (1-methyl-4-phenylpyridinium) MPP+. Knockout of GMF in BV2-G cells significantly attenuated oxidative stress via reduced ROS production and calcium flux. Furthermore, deficiency of GMF significantly reduced nuclear translocation of NRF2, which modulates HO-1 and ferritin activation, cyclooxygenase 2 (COX2) and nitric oxide synthase 2 (NOS2) expression in BV2 microglial cells. Lack of GMF significantly improved CD11b and CD68 positive microglial cells as compared with untreated cells. Our results also suggest that pharmacological and genetic intervention targeting GMF may represent a promising and a novel therapeutic strategy in controlling Parkinsonism by regulating microglial functions. Targeted regulation of GMF possibly mediates protein aggregation in microglial homeostasis associated with PD progression through regulation of iron metabolism by modulating NRF2-HO1 and ferritin expression.
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23
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Zhang C, Yang Y, Liang W, Wang T, Wang S, Wang X, Wang Y, Jiang H, Feng H. Neuroprotection by urate on the mutant hSOD1-related cellular and Drosophila models of amyotrophic lateral sclerosis: Implication for GSH synthesis via activating Akt/GSK3β/Nrf2/GCLC pathways. Brain Res Bull 2019; 146:287-301. [PMID: 30690059 DOI: 10.1016/j.brainresbull.2019.01.019] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Revised: 12/06/2018] [Accepted: 01/22/2019] [Indexed: 12/13/2022]
Abstract
Oxidative stress has been considered as a principal mechanism of motor neuron death in amyotrophic lateral sclerosis (ALS), a fatal neurodegenerative disease which could be caused by dominant mutations in an antioxidant enzyme superoxide dismutase-1 (SOD1). The aim of the present study was to investigate the potential neuroprotective effects and mechanisms of urate, an important endogenous antioxidant and a biomarker of favorable ALS progression rates, in the mutant human SOD1-related cellular and Drosophila models of ALS. Our results showed that urate treatment provided neuroprotective effects as confirmed by enhanced survival, attenuated motor impairments, reduced oxidative damage and increased antioxidant defense in hSOD1-G85R-expressing Drosophila models of ALS. In vitro studies, we demonstrated that urate protected motor neurons (NSC-34 cells) against hSOD1-G93A-induced cell damage and apoptosis by decreasing reactive oxygen specials (ROS) production and oxidative damage. Moreover, urate markedly increased the expression and activation of nuclear factor erythroid 2-related factor 2 (Nrf2), stimulated Nrf2-targeted antioxidant gene glutathione cysteine ligase catalytic subunit (GCLC) expression and glutathione (GSH) synthesis by upregulating Akt/GSK3β pathway. Furthermore, the inhibition of Akt pathway with LY294002 abolished urate-mediated elevation of GSH synthesis and neuroprotective effects both in vivo and in vitro. Overall, these results suggested that, in addition to its direct scavenging of ROS, urate markedly enhanced GSH expression by activating Akt/GSK3β/Nrf2/GCLC pathway, and thus offering neuroprotective effects on motor neurons against oxidative stress.
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Affiliation(s)
- Chunting Zhang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, PR China
| | - Yueqing Yang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, PR China
| | - Weiwei Liang
- Department of Neurology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, PR China
| | - Tianhang Wang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, PR China
| | - Shuyu Wang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, PR China
| | - Xudong Wang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, PR China
| | - Ying Wang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, PR China
| | - Hongquan Jiang
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, PR China
| | - Honglin Feng
- Department of Neurology, The First Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, 150001, PR China.
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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.
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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.
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Xiao X, Song D, Cheng Y, Hu Y, Wang F, Lu Z, Wang Y. Biogenic nanoselenium particles activate Nrf2‐ARE pathway by phosphorylating p38, ERK1/2, and AKT on IPEC‐J2 cells. J Cell Physiol 2018; 234:11227-11234. [DOI: 10.1002/jcp.27773] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2018] [Accepted: 10/30/2018] [Indexed: 01/28/2023]
Affiliation(s)
- Xiao Xiao
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Zhejiang University Hangzhou China
- Key Laboratory of Feed and Animal Nutrition of Zhejiang Province, Ministry of Agriculture, Institute of Feed Science, Zhejiang University Hangzhou China
| | - Deguang Song
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Zhejiang University Hangzhou China
- Key Laboratory of Feed and Animal Nutrition of Zhejiang Province, Ministry of Agriculture, Institute of Feed Science, Zhejiang University Hangzhou China
| | - Yuanzhi Cheng
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Zhejiang University Hangzhou China
- Key Laboratory of Feed and Animal Nutrition of Zhejiang Province, Ministry of Agriculture, Institute of Feed Science, Zhejiang University Hangzhou China
| | - Yuhan Hu
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Zhejiang University Hangzhou China
- Key Laboratory of Feed and Animal Nutrition of Zhejiang Province, Ministry of Agriculture, Institute of Feed Science, Zhejiang University Hangzhou China
| | - Fengqin Wang
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Zhejiang University Hangzhou China
- Key Laboratory of Feed and Animal Nutrition of Zhejiang Province, Ministry of Agriculture, Institute of Feed Science, Zhejiang University Hangzhou China
| | - Zeqing Lu
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Zhejiang University Hangzhou China
- Key Laboratory of Feed and Animal Nutrition of Zhejiang Province, Ministry of Agriculture, Institute of Feed Science, Zhejiang University Hangzhou China
| | - Yizhen Wang
- National Engineering Laboratory of Biological Feed Safety and Pollution Prevention and Control, Key Laboratory of Animal Nutrition and Feed Science in Eastern China, Zhejiang University Hangzhou China
- Key Laboratory of Feed and Animal Nutrition of Zhejiang Province, Ministry of Agriculture, Institute of Feed Science, Zhejiang University Hangzhou China
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Feng JH, Hu XL, Lv XY, Wang BL, Lin J, Zhang XQ, Ye WC, Xiong F, Wang H. Synthesis and biological evaluation of clovamide analogues with catechol functionality as potent Parkinson's disease agents in vitro and in vivo. Bioorg Med Chem Lett 2018; 29:302-312. [PMID: 30470490 DOI: 10.1016/j.bmcl.2018.11.030] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Revised: 10/23/2018] [Accepted: 11/14/2018] [Indexed: 10/27/2022]
Affiliation(s)
- Jia-Hao Feng
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Xiao-Long Hu
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Xian-Yu Lv
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Bao-Lin Wang
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Jun Lin
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China
| | - Xiao-Qi Zhang
- Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou 510632, People's Republic of China
| | - Wen-Cai Ye
- Institute of Traditional Chinese Medicine & Natural Products, Jinan University, Guangzhou 510632, People's Republic of China
| | - Fei Xiong
- State Key Laboratory of Bioelectronics, Jiangsu Laboratory for Biomaterials and Devices, Southeast University, Nanjing 210009, People's Republic of China.
| | - Hao Wang
- State Key Laboratory of Natural Medicines, Department of TCMs Pharmaceuticals, School of Traditional Chinese Pharmacy, China Pharmaceutical University, Nanjing 210009, People's Republic of China.
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Bauman BM, Jeong C, Savage M, Briker AL, Janigian NG, Nguyen LL, Kemmerer ZA, Eggler AL. Dr. Jekyll and Mr. Hyde: Oxidizable phenol-generated reactive oxygen species enhance sulforaphane's antioxidant response element activation, even as they suppress Nrf2 protein accumulation. Free Radic Biol Med 2018; 124:532-540. [PMID: 29969714 DOI: 10.1016/j.freeradbiomed.2018.06.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/28/2018] [Accepted: 06/29/2018] [Indexed: 12/17/2022]
Abstract
The transcription factor Nrf2 is a master regulator of antioxidant and cytoprotective genes, binding to antioxidant response elements (AREs) in their promoter regions. Due to the therapeutic role of the Nrf2/ARE system in oxidative homeostasis, its activation has been investigated in many pre-clinical and clinical trials for common chronic diseases. One of the most promising Nrf2 activators is sulforaphane, the subject of over 50 clinical trials. In this work, we examine the effect of reactive oxygen species (ROS) on sulforaphane's Nrf2/ARE activation in the non-tumorigenic keratinocyte cell line HaCaT, with the non-arylating oxidizable phenol, 2,5-di-tert-butylhydroquinone (dtBHQ), as the source of ROS. We find that, in combination with 2.5 µM sulforaphane, dtBHQ markedly enhances ARE-regulated gene expression, including expression of the cytoprotective proteins aldo-keto reductase family 1 member C1 (AKR1C1) and heme oxygenase-1 (HO-1). Additionally, sulforaphane's therapeutic window is widened by 12.5 µM dtBHQ. Our data suggest that H2O2 generated by dtBHQ oxidation is responsible for these effects, as shown by inclusion of catalase and by co-treatment with sulforaphane and H2O2. While sulforaphane treatment causes Nrf2 protein to accumulate as expected, interestingly, dtBHQ and H2O2 appear to act on targets downstream of Nrf2 protein accumulation to enhance sulforaphane's ARE-regulated gene expression. Inclusion of dtBHQ or H2O2 with sulforaphane does not increase Nrf2 protein levels, and catalase has little effect on Nrf2 protein levels in the presence of sulforaphane and dtBHQ. Surprisingly, dtBHQ suppresses Nrf2 protein synthesis. Inclusion of a superoxide dismutase mimetic with sulforaphane and dtBHQ partly rescues Nrf2 suppression and significantly further increases sulforaphane's efficacy for ARE-reporter expression. Thus, there is a "Dr. Jekyll and Mr. Hyde" effect of ROS: ROS enhance sulforaphane's ARE-regulated gene expression even as they also inhibit Nrf2 protein synthesis. This unexpected finding reveals the degree to which targets in the ARE pathway downstream of Nrf2 protein accumulation contribute to gene expression. The results presented here provide a model system for significant enhancement of sulforaphane's potency with small molecule co-treatment.
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Affiliation(s)
- Bradly M Bauman
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States
| | - Chang Jeong
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States
| | - Matthew Savage
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States
| | - Anna L Briker
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States
| | - Nicholas G Janigian
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States
| | - Linda L Nguyen
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States
| | - Zachary A Kemmerer
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States
| | - Aimee L Eggler
- Department of Chemistry, Villanova University, 800 Lancaster Avenue, Villanova, PA 19085, United States.
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Fang J, Wang H, Zhou J, Dai W, Zhu Y, Zhou Y, Wang X, Zhou M. Baicalin provides neuroprotection in traumatic brain injury mice model through Akt/Nrf2 pathway. DRUG DESIGN DEVELOPMENT AND THERAPY 2018; 12:2497-2508. [PMID: 30127597 PMCID: PMC6089097 DOI: 10.2147/dddt.s163951] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background The neuroprotective effects of Baicalin have been confirmed in several central nervous system (CNS) diseases. However, its possible effect on traumatic brain injury (TBI) model is still not clear. The present study is aimed to investigate the role and the underling mechanisms of 7-D-glucuronic acid-5,6-dihydroxyflavone (Baicalin) on TBI model. Methods The weight-drop model of TBI in Institute of Cancer Research mice was treated with Baicalin intraperitoneally at 30 minutes after TBI. LY294002 (LY) (a commonly used PI3K/Akt pathway inhibitor) was injected into the left ventricle at 30 minutes before TBI. All mice were euthanized at 24 hours after TBI to collect the brain tissue for a series of tests except for neurological function, which was measured at 2 hours and 1 and 3 days post-TBI. Results Baicalin administration significantly improved neurobehavioral function, alleviated brain edema, and reduced apoptosis-positive cells by terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) assay accompanied with the upregulation of B-cell lymphoma 2 (Bcl-2) and downregulation of Bcl-2-associated X protein (Bax) and cleaved-caspase 3 by Western blot. Besides, TBI-induced oxidant stress status was also restored in the Baicalin group by measuring malondialdehyde (MDA) content, glutathione peroxidase (GPx), and superoxide dismutase (SOD) levels in the injured brain cortex. Furthermore, translocation of Nrf2 to the nucleus was dramatically enhanced by Baicalin verified by immunofluorescence and Western blot analyses. Accordingly, its downstream antioxidative enzymes nicotinamide adenine dinucleotide phosphate:quinine oxidoreductase 1 (NQO-1) and heme oxygenase 1 (HO-1) were also activated by Baicalin confirmed by quantitative reverse transcription polymerase chain reaction (RT-qPCR) and Western blot. However, cotreatment with Baicalin and LY could partly abolish Baicalin-induced activation of Nrf2 and its neuroprotective effects in TBI. Conclusion This study demonstrates that Baicalin provides a neuroprotective effect in TBI mice model via activating the Akt/Nrf2 pathway.
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Affiliation(s)
- Jiang Fang
- Department of Neurosurgery, Jinling Hospital, School of Medicine, Southeast University, Nanjing, China,
| | - Handong Wang
- Department of Neurosurgery, Jinling Hospital, School of Medicine, Southeast University, Nanjing, China,
| | - Jian Zhou
- Department of Neurosurgery, Jinling Hospital, Jinling Clinical Medical College, Nanjing Medical University, Nanjing, China
| | - Wei Dai
- Department of Neurosurgery, Jinling Hospital, Jinling Clinical Medical College, Nanjing Medical University, Nanjing, China
| | - Yihao Zhu
- Department of Neurosurgery, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Yuan Zhou
- Department of Neurosurgery, Jinling Hospital, Jinling Clinical Medical College, Nanjing Medical University, Nanjing, China
| | - Xiaoliang Wang
- Department of Neurosurgery, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
| | - Mengliang Zhou
- Department of Neurosurgery, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, China
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Cytotoxic and cytoprotective effects of tryptamine-4,5-dione on neuronal cells: a double-edged sword. Free Radic Res 2018; 51:545-553. [PMID: 28503967 DOI: 10.1080/10715762.2017.1331038] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Serotonin (5-hydroxytryptamine) is a putative substrate for myeloperoxidase, which may convert it into the reactive quinone tryptamine-4,5-dione (TD). In this study, we found that the viability of human SH-SY5Y neuroblastoma cells treated with 25 μM TD was increased to approximately 117%. On the other hand, the cell viability was significantly decreased by exposure to TD (150-200 μM), with an increase in intracellular reactive oxygen species (ROS). Interestingly, pre-treatment of SH-SY5Y cells with 100 μM TD prevented cell death and suppressed intracellular ROS generation evoked by the addition of hydrogen peroxide (H2O2). Expression of the phase-II antioxidant enzyme NAD(P)H: quinone oxidoreductase 1 and haem oxygenase 1 were upregulated by TD at a concentration of 50-100 μM. Nuclear factor erythroid 2-related factor 2 (Nrf2), the regulator of these enzyme, was translocated from the cytosol to the nucleus by 100 μM TD. In summary, moderate concentrations of TD may increase the self-defence capacity of neuronal cells against oxidative stress.
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Choi SJ, Kim HS. Deregulation of Nrf2/ARE signaling pathway causes susceptibility of dystrophin-deficient myotubes to menadione-induced oxidative stress. Exp Cell Res 2018; 364:224-233. [PMID: 29458173 DOI: 10.1016/j.yexcr.2018.02.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Revised: 02/12/2018] [Accepted: 02/14/2018] [Indexed: 12/30/2022]
Abstract
Duchenne muscular dystrophy (DMD) is an X chromosome-linked disorder caused by a mutation in the dystrophin gene. Many previous studies reported that the skeletal muscles of DMD patients were more susceptible to oxidative stress than those of healthy people. However, not much has been known about the responsible mechanism of the differential susceptibility. In this study, we established dystrophin knock-down (DysKD) cell lines by transfection of dystrophin shRNA lentiviral particles into C2 cells and found that DysKD myotubes are more vulnerable to menadione-induced oxidative stress than control myotubes. We focused on the nuclear erythroid 2-related factor 2 (Nrf2) which is a transcription factor that regulates the expression of phase II antioxidant enzymes by binding to the antioxidant response element (ARE). Under menadione-induced oxidative stress, the translocation of Nrf2 to the nucleus is significantly decreased in the DysKD myotubes. In addition, the binding of Nrf2 to ARE site of Bcl-2 gene as well as protein expression of Bcl-2 is decreased compared to the control cells. Interestingly, sulforaphane increased Akt activation and Nrf2 translocation to the nucleus in the DysKD myotubes. These results suggest that the Nrf2 pathway might be the responsible pathway to the oxidative stress-induced muscle damage in DMD.
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Affiliation(s)
- Su Jin Choi
- Department of Biological Science, College of Natural Sciences, Ajou University, Suwon 16499, Republic of Korea
| | - Hye Sun Kim
- Department of Biological Science, College of Natural Sciences, Ajou University, Suwon 16499, Republic of Korea.
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Jung JY, Park SM, Ko HL, Lee JR, Park CA, Byun SH, Ku SK, Cho IJ, Kim SC. Epimedium koreanum Ameliorates Oxidative Stress-Mediated Liver Injury by Activating Nuclear Factor Erythroid 2-Related Factor 2. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2018; 46:469-488. [PMID: 29433393 DOI: 10.1142/s0192415x18500246] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Oxidative stress induced by reactive oxygen species is the main cause of various liver diseases. This study investigated the hepatoprotective effect of Epimedium koreanum Nakai water extract (EKE) against arachidonic acid (AA)[Formula: see text][Formula: see text][Formula: see text]iron-mediated cytotoxicity in HepG2 cells and carbon tetrachloride (CCl4-)-mediated acute liver injury in mice. Pretreatment with EKE (30 and 100[Formula: see text][Formula: see text]g/mL) significantly inhibited AA[Formula: see text][Formula: see text][Formula: see text]iron-mediated cytotoxicity in HepG2 cells by preventing changes in the expression of cleaved caspase-3 and poly(ADP-ribose) polymerase. EKE attenuated hydrogen peroxide production, glutathione depletion, and mitochondrial membrane dysfunction. EKE also increased the nuclear translocation of nuclear factor erythroid 2-related factor 2 (Nrf2), transactivated anti-oxidant response element harboring luciferase activity, and induced the expression of anti-oxidant genes. Furthermore, the cytoprotective effect of EKE against AA[Formula: see text][Formula: see text][Formula: see text]iron was blocked in Nrf2 knockout cells. Ultra-performance liquid chromatography analysis showed that EKE contained icariin, icaritin, and quercetin; icaritin and quercetin were both found to protect HepG2 cells from AA[Formula: see text][Formula: see text][Formula: see text]iron via Nrf2 activation. In a CCl4-induced mouse model of liver injury, pretreatment with EKE (300[Formula: see text]mg/kg) for four consecutive days ameliorated CCl4-mediated increases in serum aspartate aminotransferase activity, histological activity index, hepatic parenchyma degeneration, and inflammatory cell infiltration. EKE also decreased the number of nitrotyrosine-, 4-hydroxynonenal-, cleaved caspase-3-, and cleaved poly(ADP-ribose) polymerase-positive cells in hepatic tissues. These results suggest EKE is a promising candidate for the prevention or treatment of oxidative stress-related liver diseases via Nrf2 activation.
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Affiliation(s)
- Ji Yun Jung
- * College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Sang Mi Park
- * College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Hae Li Ko
- * College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Jong Rok Lee
- † Department of Pharmaceutical Engineering, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Chung A Park
- * College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Sung Hui Byun
- * College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Sae Kwang Ku
- * College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Il Je Cho
- * College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Sang Chan Kim
- * College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
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Riz I, Hawley TS, Marsal JW, Hawley RG. Noncanonical SQSTM1/p62-Nrf2 pathway activation mediates proteasome inhibitor resistance in multiple myeloma cells via redox, metabolic and translational reprogramming. Oncotarget 2018; 7:66360-66385. [PMID: 27626179 PMCID: PMC5340085 DOI: 10.18632/oncotarget.11960] [Citation(s) in RCA: 43] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2016] [Accepted: 09/03/2016] [Indexed: 11/25/2022] Open
Abstract
Multiple Myeloma (MM) is a B-cell malignancy characterized by the accumulation of clonal plasma cells in the bone marrow, with drug resistance being a major cause of therapeutic failure. We established a carfilzomib-resistant derivative of the LP-1 MM cell line (LP-1/Cfz) and found that the transcription factor NF-E2 p45-related factor 2 (Nrf2; gene symbol NFE2L2) contributes to carfilzomib resistance. The mechanism of Nrf2 activation involved enhanced translation of Nrf2 as well as its positive regulator, the autophagy receptor sequestosome 1 (SQSTM1)/p62. The eukaryotic translation initiation factor gene EIF4E3 was among the Nrf2 target genes upregulated in LP-1/Cfz cells, suggesting existence of a positive feedback loop. In line with this, we found that siRNA knockdown of eIF4E3 decreased Nrf2 protein levels. On the other hand, elevated SQSTM1/p62 levels were due at least in part to activation of the PERK-eIF2α pathway. LP-1/Cfz cells had decreased levels of reactive oxygen species as well as elevated levels of fatty acid oxidation and prosurvival autophagy. Genetic and pharmacologic inhibition of the Nrf2-EIF4E3 axis or the PERK-eIF2α pathway, disruption of redox homeostasis or inhibition of fatty acid oxidation or autophagy conferred sensitivity to carfilzomib. Our findings were supported by clinical data where increased EIF4E3 expression was predictive of Nrf2 target gene upregulation in a subgroup of patients with chemoresistant minimal residual disease and relapsed/refractory MM. Thus, our data offer a preclinical rationale for including inhibitors of the SQSTM1/p62-Nrf2 pathway to the treatment regimens for certain advanced stage MM patients.
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Affiliation(s)
- Irene Riz
- Department of Anatomy and Regenerative Biology, George Washington University, Washington, DC, USA
| | - Teresa S Hawley
- Flow Cytometry Core Facility, George Washington University, Washington, DC, USA.,Flow Cytometry Core, National Cancer Institute, National Institutes of Health, Bethesda, MD, USA
| | - Jeffrey W Marsal
- Department of Anatomy and Regenerative Biology, George Washington University, Washington, DC, USA
| | - Robert G Hawley
- Department of Anatomy and Regenerative Biology, George Washington University, Washington, DC, USA
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Alcalde-Estévez E, Arroba AI, Sánchez-Fernández EM, Mellet CO, García Fernández JM, Masgrau L, Valverde ÁM. The sp 2-iminosugar glycolipid 1-dodecylsulfonyl-5N,6O-oxomethylidenenojirimycin (DSO 2-ONJ) as selective anti-inflammatory agent by modulation of hemeoxygenase-1 in Bv.2 microglial cells and retinal explants. Food Chem Toxicol 2017; 111:454-466. [PMID: 29191728 DOI: 10.1016/j.fct.2017.11.050] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 11/22/2017] [Accepted: 11/24/2017] [Indexed: 12/17/2022]
Abstract
Neuroinflammation is an early event during diabetic retinopathy (DR) that impacts the dynamics of microglia polarization. Gliosis is a hallmark of DR and we have reported the beneficial effects of 1R-DSO-ONJ, a member of the sp2-iminosugar glycolipid (sp2-IGL) family, in targeting microglia and reducing gliosis in diabetic db/db mice. Herein, we analyzed the effect of DSO2-ONJ, another family compound incorporating a sulfone group that better mimics the phosphate group of phosphatidylinositol ether lipid analogues (PIAs), in Bv.2 microglial cells treated with bacterial lipopolysaccaride (LPS) and in retinal explants from db/db mice. In addition to decreasing iNOS and inflammasome activation, the anti-inflammatory effect of DSO2-ONJ was mediated by direct p38α MAPK activation. Computational docking experiments demonstrated that DSO2-ONJ binds to p38α MAPK at the same site where PIAs and the alkyl phospholipid perifosine activators do, suggesting similar mechanism of action. Moreover, treatment of microglial cells with DSO2-ONJ increased both heme-oxygenase (HO)-1 and Il10 expression regardless the presence of LPS. In retinal explants from db/db mice, DSO2-ONJ also induced HO-1 and reduced gliosis. Since IL-10-mediated induction of HO-1 expression is mediated by p38α MAPK activation, our results suggest that this molecular mechanism is involved in the anti-inflammatory effects of DSO2-ONJ in microglia.
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Affiliation(s)
- Elena Alcalde-Estévez
- Instituto de Investigaciones Biomédicas Alberto Sols (IIBm) (CSIC/UAM), C/ Arturo Duperier 4, 28029 Madrid, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), ISCIII, 28029 Madrid, Spain.
| | - Ana I Arroba
- Instituto de Investigaciones Biomédicas Alberto Sols (IIBm) (CSIC/UAM), C/ Arturo Duperier 4, 28029 Madrid, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), ISCIII, 28029 Madrid, Spain.
| | | | - Carmen Ortiz Mellet
- Departamento de Química Orgánica, Facultad de Química, Universidad de Sevilla, Sevilla, Spain.
| | - Jose M García Fernández
- Instituto de Investigaciones Químicas (IIQ), CSIC - Universidad de Sevilla, Avda. Américo Vespucio 49, 41092 Sevilla, Spain.
| | - Laura Masgrau
- Institut de Biotecnologia i de Biomedicina, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain; Departament de Bioquímica i Biologia Molecular, Universitat Autònoma de Barcelona, 08193 Bellaterra, Spain.
| | - Ángela M Valverde
- Instituto de Investigaciones Biomédicas Alberto Sols (IIBm) (CSIC/UAM), C/ Arturo Duperier 4, 28029 Madrid, Spain; Centro de Investigación Biomédica en Red de Diabetes y Enfermedades Metabólicas Asociadas (CIBERdem), ISCIII, 28029 Madrid, Spain.
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Kim JK, Lee JE, Jung EH, Jung JY, Jung DH, Ku SK, Cho IJ, Kim SC. Hemistepsin A ameliorates acute inflammation in macrophages via inhibition of nuclear factor-κB and activation of nuclear factor erythroid 2-related factor 2. Food Chem Toxicol 2017; 111:176-188. [PMID: 29129664 DOI: 10.1016/j.fct.2017.11.014] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2017] [Revised: 11/01/2017] [Accepted: 11/08/2017] [Indexed: 02/07/2023]
Abstract
Hemistepsin A (HsA) is a sesquiterpene lactone isolated from Hemistepta lyrata (Bunge) Bunge. We investigated the anti-inflammatory effects of HsA and sought to determine its mechanisms of action in macrophages. HsA pretreatment inhibited nitric oxide production, and reduced the expression of iNOS and COX-2 in Toll-like receptor ligand-stimulated RAW 264.7 cells. Additionally, HsA decreased the secretion of proinflammatory cytokines in lipopolysaccharide (LPS)-stimulated Kupffer cells as well as in RAW 264.7 cells. HsA inhibited phosphorylation of IKKα/β and degradation of IκBα, resulting in decreased nuclear translocation of nuclear factor-κB (NF-κB) and its transcriptional activity. Moreover, HsA phosphorylated nuclear factor erythroid 2-related factor 2 (Nrf2), increased expression levels of antioxidant genes, and attenuated LPS-stimulated H2O2 production. Phosphorylation of p38 and c-Jun N-terminal kinase was required for HsA-mediated Nrf2 phosphorylation. In a D-galactosamine/LPS-induced liver injury model, HsA ameliorated D-galactosamine/LPS-induced hepatocyte degeneration and inflammatory cells infiltration. Moreover, immunohistochemical analyses using nitrotyrosine, 4-hydroxynonenal, and cleaved poly (ADP-ribose) polymerase antibodies revealed that HsA protected the liver from oxidative stress. Furthermore, HsA reduced the numbers of proinflammatory cytokine-positive cells in hepatic tissues. Thus, these results suggest HsA may be a promising natural product to manage inflammation-mediated tissue injuries through inhibition of NF-κB and activation of Nrf2.
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Affiliation(s)
- Jae Kwang Kim
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Ji Eun Lee
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Eun Hye Jung
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Ji Yun Jung
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Dae Hwa Jung
- HaniBio Co., Ltd., Gyeongsan, Gyeongsangbuk-do 38540, Republic of Korea
| | - Sae Kwang Ku
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea
| | - Il Je Cho
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea.
| | - Sang Chan Kim
- College of Korean Medicine, Daegu Haany University, Gyeongsan, Gyeongsangbuk-do 38610, Republic of Korea.
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Patricia Moreno-Londoño A, Bello-Alvarez C, Pedraza-Chaverri J. Isoliquiritigenin pretreatment attenuates cisplatin induced proximal tubular cells (LLC-PK1) death and enhances the toxicity induced by this drug in bladder cancer T24 cell line. Food Chem Toxicol 2017; 109:143-154. [DOI: 10.1016/j.fct.2017.08.047] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 08/22/2017] [Accepted: 08/30/2017] [Indexed: 12/17/2022]
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STAT3-RXR-Nrf2 activates systemic redox and energy homeostasis upon steep decline in pO 2 gradient. Redox Biol 2017; 14:423-438. [PMID: 29078168 PMCID: PMC5680518 DOI: 10.1016/j.redox.2017.10.013] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 08/30/2017] [Accepted: 10/15/2017] [Indexed: 01/04/2023] Open
Abstract
Hypobaric hypoxia elicits several patho-physiological manifestations, some of which are known to be lethal. Among various molecular mechanisms proposed so far, perturbation in redox state due to imbalance between radical generation and antioxidant defence is promising. These molecular events are also related to hypoxic status of cancer cells and therefore its understanding has extended clinical advantage beyond high altitude hypoxia. In present study, however, the focus was to understand and propose a model for rapid acclimatization of high altitude visitors to enhance their performance based on molecular changes. We considered using simulated hypobaric hypoxia at some established thresholds of high altitude stratification based on known physiological effects. Previous studies have focused on the temporal aspect while overlooking the effects of varying pO2 levels during exposure to hypobaric hypoxia. The pO2 levels, indicative of altitude, are crucial to redox homeostasis and can be the limiting factor during acclimatization to hypobaric hypoxia. In this study we present the effects of acute (24h) exposure to high (3049m; pO2: 71kPa), very high (4573m; pO2: 59kPa) and extreme altitude (7620m; pO2: 40kPa) zones on lung and plasma using semi-quantitative redox specific transcripts and quantitative proteo-bioinformatics workflow in conjunction with redox stress assays. It was observed that direct exposure to extreme altitude caused 100% mortality, which turned into high survival rate after pre-exposure to 59kPa, for which molecular explanation were also found. The pO2 of 59kPa (very high altitude zone) elicits systemic energy and redox homeostatic processes by modulating the STAT3-RXR-Nrf2 trio. Finally we posit the various processes downstream of STAT3-RXR-Nrf2 and the plasma proteins that can be used to ascertain the redox status of an individual.
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Kumar J, Teoh SL, Das S, Mahakknaukrauh P. Oxidative Stress in Oral Diseases: Understanding Its Relation with Other Systemic Diseases. Front Physiol 2017; 8:693. [PMID: 28959211 PMCID: PMC5603668 DOI: 10.3389/fphys.2017.00693] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2017] [Accepted: 08/29/2017] [Indexed: 12/18/2022] Open
Abstract
Oxidative stress occurs in diabetes, various cancers, liver diseases, stroke, rheumatoid arthritis, chronic inflammation, and other degenerative diseases related to the nervous system. The free radicals have deleterious effect on various organs of the body. This is due to lipid peroxidation and irreversible protein modification that leads to cellular apoptosis or programmed cell death. During recent years, there is a rise in the oral diseases related to oxidative stress. Oxidative stress in oral disease is related to other systemic diseases in the body such as periodontitis, cardiovascular, pancreatic, gastric, and liver diseases. In the present review, we discuss the various pathways that mediate oxidative cellular damage. Numerous pathways mediate oxidative cellular damage and these include caspase pathway, PERK/NRF2 pathway, NADPH oxidase 4 pathways and JNK/mitogen-activated protein (MAP) kinase pathway. We also discuss the role of inflammatory markers, lipid peroxidation, and role of oxygen species linked to oxidative stress. Knowledge of different pathways, role of inflammatory markers, and importance of low-density lipoprotein, fibrinogen, creatinine, nitric oxide, nitrates, and highly sensitive C-reactive proteins may be helpful in understanding the pathogenesis and plan better treatment for oral diseases which involve oxidative stress.
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Affiliation(s)
- Jaya Kumar
- Department of Physiology, Universiti Kebangsaan Malaysia Medical CentreKuala Lumpur, Malaysia
| | - Seong Lin Teoh
- Department of Anatomy, Universiti Kebangsaan Malaysia Medical CentreKuala Lumpur, Malaysia
| | - Srijit Das
- Department of Anatomy, Universiti Kebangsaan Malaysia Medical CentreKuala Lumpur, Malaysia
| | - Pasuk Mahakknaukrauh
- Forensic Osteology Research, Chiang Mai UniversityChiang Mai, Thailand
- Excellence in Osteology Research and Training Center, Chiang Mai UniversityChiang Mai, Thailand
- Department of Anatomy, Faculty of Medicine, Chiang Mai UniversityChiang Mai, Thailand
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Periyasamy P, Shinohara T. Age-related cataracts: Role of unfolded protein response, Ca 2+ mobilization, epigenetic DNA modifications, and loss of Nrf2/Keap1 dependent cytoprotection. Prog Retin Eye Res 2017; 60:1-19. [PMID: 28864287 PMCID: PMC5600869 DOI: 10.1016/j.preteyeres.2017.08.003] [Citation(s) in RCA: 94] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Revised: 08/26/2017] [Accepted: 08/28/2017] [Indexed: 12/11/2022]
Abstract
Age-related cataracts are closely associated with lens chronological aging, oxidation, calcium imbalance, hydration and crystallin modifications. Accumulating evidence indicates that misfolded proteins are generated in the endoplasmic reticulum (ER) by most cataractogenic stresses. To eliminate misfolded proteins from cells before they can induce senescence, the cells activate a clean-up machinery called the ER stress/unfolded protein response (UPR). The UPR also activates the nuclear factor-erythroid-2-related factor 2 (Nrf2), a central transcriptional factor for cytoprotection against stress. Nrf2 activates nearly 600 cytoprotective target genes. However, if ER stress reaches critically high levels, the UPR activates destructive outputs to trigger programmed cell death. The UPR activates mobilization of ER-Ca2+ to the cytoplasm and results in activation of Ca2+-dependent proteases to cleave various enzymes and proteins which cause the loss of normal lens function. The UPR also enhances the overproduction of reactive oxygen species (ROS), which damage lens constituents and induce failure of the Nrf2 dependent cytoprotection. Kelch-like ECH-associated protein 1 (Keap1) is an oxygen sensor protein and regulates the levels of Nrf2 by the proteasomal degradation. A significant loss of DNA methylation in diabetic cataracts was found in the Keap1 promoter, which overexpresses the Keap1 protein. Overexpressed Keap1 significantly decreases the levels of Nrf2. Lower levels of Nrf2 induces loss of the redox balance toward to oxidative stress thereby leading to failure of lens cytoprotection. Here, this review summarizes the overall view of ER stress, increases in Ca2+ levels, protein cleavage, and loss of the well-established stress protection in somatic lens cells.
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Affiliation(s)
- Palsamy Periyasamy
- Department of Ophthalmology and Visual Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA; Department of Pharmacology and Experimental Neuroscience, University of Nebraska Medical Center, Omaha, NE 68198, USA.
| | - Toshimichi Shinohara
- Department of Ophthalmology and Visual Sciences, University of Nebraska Medical Center, Omaha, NE 68198, USA
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Barančík M, Grešová L, Barteková M, Dovinová I. Nrf2 as a key player of redox regulation in cardiovascular diseases. Physiol Res 2017; 65 Suppl 1:S1-S10. [PMID: 27643930 DOI: 10.33549/physiolres.933403] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The oxidative stress plays an important role in the development of cardiovascular diseases (CVD). In CVD progression an aberrant redox regulation was observed. In this regulation levels of reactive oxygen species (ROS) play an important role in cellular signaling, where Nrf2 is the key regulator of redox homeostasis. Keap1-Nrf2-ARE system regulates a great set of detoxificant and antioxidant enzymes in cells after ROS and electrophiles exposure. In this review we focus on radical-generating systems in cardiovascular system as well as on Nrf2 as a target against oxidative stress and a key player of redox regulation in cardiovascular diseases. We also summarize the current knowledge about the role of Nrf2 in pathophysiology of several CVD (hypertension, cardiac hypertrophy, cardiomyopathies) as well as in cardioprotection against myocardial ischemia/ reperfusion injury.
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Affiliation(s)
- M Barančík
- Institute for Heart Research, Slovak Academy of Sciences, Bratislava, Slovakia.
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Konopka AR, Laurin JL, Musci RV, Wolff CA, Reid JJ, Biela LM, Zhang Q, Peelor FF, Melby CL, Hamilton KL, Miller BF. Influence of Nrf2 activators on subcellular skeletal muscle protein and DNA synthesis rates after 6 weeks of milk protein feeding in older adults. GeroScience 2017; 39:175-186. [PMID: 28283797 DOI: 10.1007/s11357-017-9968-8] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 03/02/2017] [Indexed: 12/12/2022] Open
Abstract
In older adults, chronic oxidative and inflammatory stresses are associated with an impaired increase in skeletal muscle protein synthesis after acute anabolic stimuli. Conjugated linoleic acid (CLA) and Protandim have been shown to activate nuclear factor erythroid-derived 2-like 2 (Nrf2), a transcription factor for the antioxidant response element and anti-inflammatory pathways. This study tested the hypothesis that compared to a placebo control (CON), CLA and Protandim would increase skeletal muscle subcellular protein (myofibrillar, mitochondrial, cytoplasmic) and DNA synthesis in older adults after 6 weeks of milk protein feeding. CLA decreased oxidative stress and skeletal muscle oxidative damage with a trend to increase messenger RNA (mRNA) expression of a Nrf2 target, NAD(P)H dehydrogenase quinone 1 (NQO1). However, CLA did not influence other Nrf2 targets (heme oxygenase-1 (HO-1), glutathione peroxidase 1 (Gpx1)) or protein or DNA synthesis. Conversely, Protandim increased HO-1 protein content but not the mRNA expression of downstream Nrf2 targets, oxidative stress, or skeletal muscle oxidative damage. Rates of myofibrillar protein synthesis were maintained despite lower mitochondrial and cytoplasmic protein syntheses after Protandim versus CON. Similarly, DNA synthesis was non-significantly lower after Protandim compared to CON. After Protandim, the ratio of protein to DNA synthesis tended to be greater in the myofibrillar fraction and maintained in the mitochondrial and cytoplasmic fractions, emphasizing the importance of measuring both protein and DNA synthesis to gain insight into proteostasis. Overall, these data suggest that Protandim may enhance proteostatic mechanisms of skeletal muscle contractile proteins after 6 weeks of milk protein feeding in older adults.
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Affiliation(s)
- Adam R Konopka
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA.
| | - Jaime L Laurin
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA
| | - Robert V Musci
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA
| | - Christopher A Wolff
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA
| | - Justin J Reid
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA
| | - Laurie M Biela
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA
| | - Qian Zhang
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA
| | - Fredrick F Peelor
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA
| | - Christopher L Melby
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA
| | - Karyn L Hamilton
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA
| | - Benjamin F Miller
- Department of Health and Exercise Science, Colorado State University, 110 Moby B Complex, Fort Collins, CO, 80523, USA
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Martinez-Useros J, Li W, Cabeza-Morales M, Garcia-Foncillas J. Oxidative Stress: A New Target for Pancreatic Cancer Prognosis and Treatment. J Clin Med 2017; 6:jcm6030029. [PMID: 28282928 PMCID: PMC5372998 DOI: 10.3390/jcm6030029] [Citation(s) in RCA: 65] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2016] [Revised: 02/15/2017] [Accepted: 03/06/2017] [Indexed: 01/17/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is one of the most lethal types of tumors, and its incidence is rising worldwide. Survival can be improved when tumors are detected at an early stage; however, this cancer is usually asymptomatic, and the disease only becomes apparent after metastasis. Several risk factors are associated to this disease. Chronic pancreatitis, diabetes, and some infectious disease are the most relevant risk factors. Incidence of PDAC has increased in the last decades. It is hypothesized it could be due to other acquired risk habits, like smoking, high alcohol intake, and obesity. Indeed, adipose tissue is a dynamic endocrine organ that secretes different pro-inflammatory cytokines, enzymes, and other factors that activate oxidative stress. Reactive oxygen species caused by oxidative stress, damage DNA, proteins, and lipids, and produce several toxic and high mutagenic metabolites that could modify tumor behavior, turning it into a malignant phenotype. Anti-oxidant compounds, like vitamins, are considered protective factors against cancer. Here, we review the literature on oxidative stress, the molecular pathways that activate or counteract oxidative stress, and potential treatment strategies that target reactive oxygen species suitable for this kind of cancer.
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Affiliation(s)
- Javier Martinez-Useros
- Translational Oncology Division, OncoHealth Institute, Health Research Institute, University Hospital Fundación Jiménez Díaz-UAM, 28040 Madrid, Spain.
| | - Weiyao Li
- Translational Oncology Division, OncoHealth Institute, Health Research Institute, University Hospital Fundación Jiménez Díaz-UAM, 28040 Madrid, Spain.
| | | | - Jesus Garcia-Foncillas
- Translational Oncology Division, OncoHealth Institute, Health Research Institute, University Hospital Fundación Jiménez Díaz-UAM, 28040 Madrid, Spain.
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Cervical Cancer Cell Line Secretome Highlights the Roles of Transforming Growth Factor-Beta-Induced Protein ig-h3, Peroxiredoxin-2, and NRF2 on Cervical Carcinogenesis. BIOMED RESEARCH INTERNATIONAL 2017; 2017:4180703. [PMID: 28261610 PMCID: PMC5316418 DOI: 10.1155/2017/4180703] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Revised: 11/16/2016] [Accepted: 11/24/2016] [Indexed: 02/07/2023]
Abstract
Cancer cells acquire unique secretome compositions that contribute to tumor development and metastasis. The aim of our study was to elucidate the biological processes involved in cervical cancer, by performing a proteomic analysis of the secretome from the following informative cervical cell lines: SiHa (HPV16+), HeLa (HPV18+), C33A (HPV-), and HCK1T (normal). Proteins were analyzed by 2D gel electrophoresis coupled to MALDI-TOF-MS. Enrichment of secreted proteins with characteristic profiles for each cell line was followed by the identification of differentially expressed proteins. Particularly, transforming growth factor-beta-induced protein ig-h3 (Beta ig-h3) and peroxiredoxin-2 (PRDX2) overexpression in the secretome of cancer cell lines was detected and confirmed by Western blot. Bioinformatics analysis identified the transcription factor NRF2 as a regulator of differentially expressed proteins in the cervical cancer secretome. NRF2 levels were measured by both Western blot and Multiple Reaction Monitoring (MRM) in the total cell extract of the four cell lines. NRF2 was upregulated in SiHa and C33A compared to HCK1T. In conclusion, the secreted proteins identified in cervical cancer cell lines indicate that aberrant NRF2-mediated oxidative stress response (OSR) is a prominent feature of cervical carcinogenesis.
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Pan JH, Feng L, Jiang WD, Wu P, Kuang SY, Tang L, Zhang YA, Zhou XQ, Liu Y. Vitamin E deficiency depressed fish growth, disease resistance, and the immunity and structural integrity of immune organs in grass carp (Ctenopharyngodon idella): Referring to NF-κB, TOR and Nrf2 signaling. FISH & SHELLFISH IMMUNOLOGY 2017; 60:219-236. [PMID: 27888132 DOI: 10.1016/j.fsi.2016.11.044] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2016] [Revised: 11/15/2016] [Accepted: 11/18/2016] [Indexed: 06/06/2023]
Abstract
This study investigated the effects of dietary vitamin E on growth, disease resistance and the immunity and structural integrity of head kidney, spleen and skin in grass carp (Ctenopharyngodon idella). The fish were fed six diets containing graded levels of vitamin E (0, 45, 90, 135, 180 and 225 mg/kg diet) for 10 weeks. Subsequently, a challenge test was conducted by injection of Aeromonas hydrophila. The results showed that compared with optimal vitamin E supplementation, vitamin E deficiency caused depressed growth, poor survival rates and increased skin lesion morbidity in grass carp. Meanwhile, vitamin E deficiency decreased lysozyme and acid phosphatase activities, complement component 3 and complement component 4 contents in the head kidney, spleen and skin of grass carp (P < 0.05). Moreover, vitamin E deficiency down-regulated antimicrobial peptides (Hepcidin, liver-expressed antimicrobial peptide-2A, -2B, β-defensin), IL-10, TGFβ1, IκBα, TOR and S6K1 mRNA levels (P < 0.05) and up-regulated IL-1β, IL-6, IL-8, IFN-γ2 and TNFα, NF-κB p65, IKKα, IKKβ and 4EBP1 (not in the head kidney) mRNA levels (P < 0.05). In addition, vitamin E deficiency caused oxidative damage, decreased superoxide dismutase (SOD), glutathione peroxidase (GPx), catalase (CAT) and glutathione reductase (GR) activities, and down-regulated the mRNA levels of antioxidant enzymes and signaling molecules Nrf2 (P < 0.05). Vitamin E deficiency also induced apoptosis by up-regulating capase-2, -3, -7, and -8 mRNA levels in the head kidney, spleen and skin of grass carp. In conclusion, this study indicated that dietary vitamin E deficiency depressed fish growth, impaired the immune function and disturbed the structural integrity of the head kidney, spleen and skin in grass carp, but optimal vitamin E supplementation can reverse those negative effects in fish. The optimal vitamin E requirements for young grass carp (266.39-1026.63 g) to achieve optimal growth performance and disease resistance based on the percent weight gain (PWG) and skin lesion morbidity were estimated to be 116.2 and 130.9 mg/kg diet, respectively. Meanwhile, based on immune indicator (LA activity in the head kidney) and antioxidant indicator (protection of spleen against MDA), the optimal vitamin E requirements for young grass carp were estimated to be 123.8 and 136.4 mg/kg diet, respectively.
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Affiliation(s)
- Jia-Hong Pan
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China
| | - Lin Feng
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Wei-Dan Jiang
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Pei Wu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu 611130, China
| | - Sheng-Yao Kuang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Ling Tang
- Animal Nutrition Institute, Sichuan Academy of Animal Science, Chengdu 610066, China
| | - Yong-An Zhang
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan 430072, China
| | - Xiao-Qiu Zhou
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu 611130, China.
| | - Yang Liu
- Animal Nutrition Institute, Sichuan Agricultural University, Chengdu 611130, China; Fish Nutrition and Safety Production University Key Laboratory of Sichuan Province, Sichuan Agricultural University, Chengdu 611130, China; Key Laboratory for Animal Disease-Resistance Nutrition of China Ministry of Education, Sichuan Agricultural University, Chengdu 611130, China.
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Jin SW, Hwang YP, Choi CY, Kim HG, Kim SJ, Kim Y, Chung YC, Lee KJ, Jeong TC, Jeong HG. Protective effect of rutaecarpine against t-BHP-induced hepatotoxicity by upregulating antioxidant enzymes via the CaMKII-Akt and Nrf2/ARE pathways. Food Chem Toxicol 2016; 100:138-148. [PMID: 28025122 DOI: 10.1016/j.fct.2016.12.031] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Revised: 11/23/2016] [Accepted: 12/22/2016] [Indexed: 02/06/2023]
Abstract
Rutaecarpine, an indolopyridoquinazolinone alkaloid isolated from the unripe fruit of Evodia rutaecarpa, has been shown to have cytoprotective potential, but the molecular mechanism underlying this activity remains unclear. Our study was designed to investigate the cytoprotective effect of rutaecarpine against tert-butyl hydroperoxide (t-BHP) and to elucidate its action mechanism of action of rutaecarpine in a cultured HepG2 cell line and in mouse liver. Rutaecarpine decreased t-BHP-induced reactive oxygen species (ROS) production, cytotoxicity, and apoptosis in HepG2 cells. Pretreatment with rutaecarpine prior to the injection of t-BHP significantly prevented the increase in serum levels of AST, ALT, and lipid peroxidation in mice liver. It increased the transcriptional activity of NF-E2-related factor 2 (Nrf2) as well as the products of the Nrf2 target genes hemeoxygenase-1 (HO-1), NAD(P)H:quinone oxidoreductase 1 (NQO1), and glutamate cysteine ligase (GCL). Moreover, rutaecarpine also enhanced the phosphorylation of Akt and Ca2+/calmodulin-dependent protein kinase-II (CaMKII). The pharmaceutical inhibitors, such as KN-93 (CaMKII inhibitor) and LY294002 (Akt inhibitor) suppressed rutaecarpine-induced HO-1 expression and cytoprotection. Our findings identify the CaMKII-PI3K/Akt-Nrf2 cascade as an antioxidant pathway mediating rutaecarpine signaling and leading to HO-1 expression in hepatocytes.
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Affiliation(s)
- Sun Woo Jin
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Yong Pil Hwang
- Department of Pharmaceutical Engineering, International University of Korea, Jinju, Republic of Korea
| | - Chul Yung Choi
- Jeollanamdo Institute of Natural Resources Research, Jeollanamdo, Republic of Korea
| | - Hyung Gyun Kim
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Se Jong Kim
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Yongan Kim
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea
| | - Young Chul Chung
- Department of Food Science, International University of Korea, Jinju, Republic of Korea
| | - Kyung Jin Lee
- Department of Convergence Medicine, ASAN Medical Center, University of Ulsan College of Medicine, Republic of Korea
| | - Tae Cheon Jeong
- College of Pharmacy, Yeungnam University, Gyeongsan, Republic of Korea
| | - Hye Gwang Jeong
- College of Pharmacy, Chungnam National University, Daejeon, Republic of Korea.
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Wong SY, Tan MGK, Wong PTH, Herr DR, Lai MKP. Andrographolide induces Nrf2 and heme oxygenase 1 in astrocytes by activating p38 MAPK and ERK. J Neuroinflammation 2016; 13:251. [PMID: 27663973 PMCID: PMC5034653 DOI: 10.1186/s12974-016-0723-3] [Citation(s) in RCA: 54] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 09/15/2016] [Indexed: 12/30/2022] Open
Abstract
BACKGROUND Andrographolide is the major labdane diterpenoid originally isolated from Andrographis paniculata and has been shown to have anti-inflammatory and antioxidative effects. However, there is a dearth of studies on the potential therapeutic utility of andrographolide in neuroinflammatory conditions. Here, we aimed to investigate the mechanisms underlying andrographolide's effect on the expression of anti-inflammatory and antioxidant heme oxygenase-1 (HO-1) in primary astrocytes. METHODS Measurements of the effects of andrograholide on antioxidant HO-1 and its transcription factor, Nrf2, include gene expression, protein turnover, and activation of putative signaling regulators. RESULTS Andrographolide potently activated Nrf2 and also upregulated HO-1 expression in primary astrocytes. Andrographolide's effects on Nrf2 seemed to be biphasic, with acute (within 1 h) reductions in Nrf2 ubiquitination efficiency and turnover rate, followed by upregulation of Nrf2 mRNA between 8 and 24 h. The acute regulation of Nrf2 by andrographolide seemed to be independent of Keap1 and partly mediated by p38 MAPK and ERK signaling. CONCLUSIONS These data provide further insights into the mechanisms underlying andrographolide's effects on astrocyte-mediated antioxidant, and anti-inflammatory responses and support the further assessment of andrographolide as a potential therapeutic for neurological conditions in which oxidative stress and neuroinflammation are implicated.
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Affiliation(s)
- Siew Ying Wong
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, 117599 Singapore
| | - Michelle G. K. Tan
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, 117599 Singapore
- Department of Clinical Research, Singapore General Hospital, Outram, Singapore
| | - Peter T. H. Wong
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, 117599 Singapore
| | - Deron R. Herr
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, 117599 Singapore
| | - Mitchell K. P. Lai
- Department of Pharmacology, Yong Loo Lin School of Medicine, National University of Singapore, Unit 09-01, Centre for Translational Medicine (MD6), 14 Medical Drive, Kent Ridge, 117599 Singapore
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AMPK Facilitates Nuclear Accumulation of Nrf2 by Phosphorylating at Serine 550. Mol Cell Biol 2016; 36:1931-42. [PMID: 27161318 DOI: 10.1128/mcb.00118-16] [Citation(s) in RCA: 356] [Impact Index Per Article: 44.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Accepted: 05/05/2016] [Indexed: 12/12/2022] Open
Abstract
Nrf2 (nuclear factor erythroid 2-related factor 2) is an antioxidant transcription factor. AMP-activated protein kinase (AMPK) functions as a central regulator of cell survival in response to stressful stimuli. Nrf2 should be coordinated with the cell survival pathway controlled by AMPK, but so far the mechanistic connections remain undefined. This study investigated the role of AMPK in Nrf2 trafficking and its activity regulation. A subnetwork integrating neighbor molecules suggested direct interaction between AMPK and Nrf2. In cells, AMPK activation caused nuclear accumulation of Nrf2. In the in vitro kinase and peptide competition assays, AMPK phosphorylated Nrf2 at the Ser558 residue (Ser550 in mouse) located in the canonical nuclear export signal. Nrf2 with an S550A mutation failed to be accumulated in the nucleus after AMPK activation. Leptomycin B, a nuclear export inhibitor, did not enhance nuclear accumulation of wild-type Nrf2 (WT-Nrf2) activated by AMPK or a phospho-Ser550-mimetic Nrf2 mutant, corroborating the finding that AMPK facilitated nuclear accumulation of Nrf2, probably by inhibiting nuclear export. Activated glycogen synthase kinase 3β (GSK3β) diminished the basal nuclear level of Myc-S550A-Nrf2. Taking the data collectively, AMPK phosphorylates Nrf2 at the Ser550 residue, which, in conjunction with AMPK-mediated GSK3β inhibition, promotes nuclear accumulation of Nrf2 for antioxidant response element (ARE)-driven gene transactivation.
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Hsu Y, Tran M, Linninger AA. Dynamic regulation of aquaporin-4 water channels in neurological disorders. Croat Med J 2016; 56:401-21. [PMID: 26526878 PMCID: PMC4655926 DOI: 10.3325/cmj.2015.56.401] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Aquaporin-4 water channels play a central role in brain water regulation in neurological disorders. Aquaporin-4 is abundantly expressed at the astroglial endfeet facing the cerebral vasculature and the pial membrane, and both its expression level and subcellular localization significantly influence brain water transport. However, measurements of aquaporin-4 levels in animal models of brain injury often report opposite trends of change at the injury core and the penumbra. Furthermore, aquaporin-4 channels play a beneficial role in brain water clearance in vasogenic edema, but a detrimental role in cytotoxic edema and exacerbate cell swelling. In light of current evidence, we still do not have a complete understanding of the role of aquaporin-4 in brain water transport. In this review, we propose that the regulatory mechanisms of aquaporin-4 at the transcriptional, translational, and post-translational levels jointly regulate water permeability in the short and long time scale after injury. Furthermore, in order to understand why aquaporin-4 channels play opposing roles in cytotoxic and vasogenic edema, we discuss experimental evidence on the dynamically changing osmotic gradients between blood, extracellular space, and the cytosol during the formation of cytotoxic and vasogenic edema. We conclude with an emerging picture of the distinct osmotic environments in cytotoxic and vasogenic edema, and propose that the directions of aquaporin-4-mediated water clearance in these two types of edema are distinct. The difference in water clearance pathways may provide an explanation for the conflicting observations of the roles of aquaporin-4 in edema resolution.
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Affiliation(s)
| | | | - Andreas A Linninger
- Andreas Linninger, 851 S Morgan St., SEO 218, MC 063, Chicago, IL 60607, USA,
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48
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Nuclear F-actin enhances the transcriptional activity of β-catenin by increasing its nuclear localization and binding to chromatin. Histochem Cell Biol 2016; 145:389-99. [DOI: 10.1007/s00418-016-1416-9] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/30/2016] [Indexed: 01/15/2023]
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49
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Denzer I, Münch G, Friedland K. Modulation of mitochondrial dysfunction in neurodegenerative diseases via activation of nuclear factor erythroid-2-related factor 2 by food-derived compounds. Pharmacol Res 2016; 103:80-94. [DOI: 10.1016/j.phrs.2015.11.019] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/10/2015] [Revised: 11/23/2015] [Accepted: 11/23/2015] [Indexed: 12/30/2022]
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50
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McSweeney SR, Warabi E, Siow RCM. Nrf2 as an Endothelial Mechanosensitive Transcription Factor: Going With the Flow. Hypertension 2015; 67:20-9. [PMID: 26597822 DOI: 10.1161/hypertensionaha.115.06146] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Shane R McSweeney
- From the Cardiovascular Division, British Heart Foundation Centre of Research Excellence, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom (S.R.M., R.C.M.S.); and Faculty of Medicine, University of Tsukuba, Tsukuba, Japan (E.W.)
| | - Eiji Warabi
- From the Cardiovascular Division, British Heart Foundation Centre of Research Excellence, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom (S.R.M., R.C.M.S.); and Faculty of Medicine, University of Tsukuba, Tsukuba, Japan (E.W.)
| | - Richard C M Siow
- From the Cardiovascular Division, British Heart Foundation Centre of Research Excellence, Faculty of Life Sciences and Medicine, King's College London, London, United Kingdom (S.R.M., R.C.M.S.); and Faculty of Medicine, University of Tsukuba, Tsukuba, Japan (E.W.).
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