1
|
Ujiie K, Tanaka C, Arai M, Hashimoto M, Yoshida Y, Kawano T, Tamura S. Proposal for structure revision of pinofuranoxin A through total syntheses of stereoisomers. J Nat Med 2024; 78:608-617. [PMID: 38587582 DOI: 10.1007/s11418-024-01810-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Accepted: 03/29/2024] [Indexed: 04/09/2024]
Abstract
The relative configuration of the epoxide functionality in pinofuranoxin A (1), α-alkylidene-β-hydroxy-γ-methyl-γ-butyrolactone with trans-epoxy side chain isolated by Evidente et al. in 2021, was revised by DFT-based spectral reinvestigations and stereo-controlled synthesis. The present investigation demonstrates the difficulty of the configurational elucidation of the stereogenic centers on the conformationally flexible acyclic side-chains. Sharpless's enantioselective epoxidations and dihydroxylations were quite effective in the reinvestigations of the configurations. As our syntheses made all diastereomers available, these would be quite effective in the next structure-biological activity relationship studies.
Collapse
Affiliation(s)
- Kazuki Ujiie
- Laboratory of Natural Products Chemistry, School of Pharmaceutical Sciences, Wakayama Medical University, 25-1 Shichibancho, Wakayama, 640-8156, Japan
| | - Chiaki Tanaka
- Laboratory of Natural Products Chemistry, School of Pharmaceutical Sciences, Wakayama Medical University, 25-1 Shichibancho, Wakayama, 640-8156, Japan
| | - Masayoshi Arai
- Laboratory of Natural Products for Drug Discovery, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-Oka, Suita, Osaka, 565-0871, Japan
| | - Masaru Hashimoto
- Department of Biochemistry and Molecular Biology, Faculty of Agriculture and Life Science, Hirosaki University, 3-Bunkyo-Cho, Hirosaki, 036-8561, Japan
| | - Yuki Yoshida
- Department of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, 1-1-1 Idai-Dori, Yahaba-Cho, Shiwa-Gun, Iwate, 028-3694, Japan
| | - Tomikazu Kawano
- Department of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, 1-1-1 Idai-Dori, Yahaba-Cho, Shiwa-Gun, Iwate, 028-3694, Japan
| | - Satoru Tamura
- Laboratory of Natural Products Chemistry, School of Pharmaceutical Sciences, Wakayama Medical University, 25-1 Shichibancho, Wakayama, 640-8156, Japan.
| |
Collapse
|
2
|
Dimethyl Itaconate Inhibits Melanogenesis in B16F10 Cells. Antioxidants (Basel) 2023; 12:antiox12030692. [PMID: 36978940 PMCID: PMC10045371 DOI: 10.3390/antiox12030692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2023] [Revised: 03/07/2023] [Accepted: 03/08/2023] [Indexed: 03/18/2023] Open
Abstract
Itaconate is a metabolite produced to counteract and resolve pro-inflammatory responses when macrophages are challenged with intracellular or extracellular stimuli. In the present study, we have observed that dimethyl itaconate (DMI) inhibits melanogenesis in B16F10 cells. DMI inhibits microphthalmia-associated transcription factor (MITF) and downregulates the expression of MITF target genes, such as tyrosinase (TYR), tyrosinase-related protein 1 (TRP-1), and tyrosinase-related protein 2 (TRP-2). DMI also decreases the level of melanocortin 1 receptor (MC1R) and the production of α-melanocyte stimulating hormone (α-MSH), resulting in the inhibition of extracellular signal-regulated kinase 1/2 (ERK1/2) and MITF activities. The structure–activity relationship (SAR) study illustrates that the α,β-unsaturated carbonyl moiety in DMI, a moiety required to target KELCH-like ECH-associated protein 1 (KEAP1) to activate NF-E2-related factor 2 (NRF2), is necessary to inhibit melanogenesis and knocking down Nrf2 attenuates the inhibition of melanogenesis by DMI. Together, our study reveals that the MC1R-ERK1/2-MITF axis regulated by the KEAP1-NRF2 pathway is the molecular target responsible for the inhibition of melanogenesis by DMI.
Collapse
|
3
|
Steinhoff M, Alam M, Ahmad A, Uddin S, Buddenkotte J. Targeting oncogenic transcription factors in skin malignancies: An update on cancer stemness and therapeutic outcomes. Semin Cancer Biol 2022; 87:98-116. [PMID: 36372325 DOI: 10.1016/j.semcancer.2022.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2022] [Revised: 10/29/2022] [Accepted: 11/08/2022] [Indexed: 11/13/2022]
Abstract
The skin is the largest organ of the human body and prone to various diseases, including cancer; thus, provides the first line of defense against exogenous biological and non-biological agents. Skin cancer, a complex and heterogenic process, with steep incidence rate often metastasizes due to poor understanding of the underlying mechanisms of pathogenesis and clinical challenges. Indeed, accumulating evidence indicates that deregulation of transcription factors (TFs) due to genetic, epigenetic and signaling distortions plays essential role in the development of cutaneous malignancies and therapeutic challenges including cancer stemness features and reprogramming. This review highlights the recent developments exploring underlying mechanisms how deregulated TFs (e.g., NF-κB, AP-1, STAT etc.,) orchestrates cutaneous onco-pathogenesis, reprogramming, stemness and poor clinical outcomes. Along this line, bioactive drugs, and their derivatives from natural and or synthetic origin has gained attention due to their multitargeting potential, potentially safer and effective therapeutic outcome for human malignancies. We also discussed therapeutic importance of targeting aberrantly expressed TFs in skin cancers with bioactive natural products and or synthetic agents.
Collapse
Affiliation(s)
- Martin Steinhoff
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha 3050, Qatar; Department of Medicine, Weill Cornell Medicine Qatar, Qatar Foundation-Education City, Doha 24144, Qatar; Department of Medicine, Weill Cornell Medicine, 1300 York Avenue, New York, NY 10065, USA; College of Medicine, Qatar University, Doha 2713, Qatar.
| | - Majid Alam
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha 3050, Qatar
| | - Aamir Ahmad
- Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha 3050, Qatar
| | - Shahab Uddin
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha 3050, Qatar; Laboratory Animal Center, Qatar University, Doha, Qatar
| | - Joerg Buddenkotte
- Translational Research Institute, Academic Health System, Hamad Medical Corporation, Doha, Qatar; Dermatology Institute, Academic Health System, Hamad Medical Corporation, Doha 3050, Qatar; Department of Dermatology and Venereology, Rumailah Hospital, Hamad Medical Corporation, Doha 3050, Qatar
| |
Collapse
|
4
|
Panieri E, Telkoparan-Akillilar P, Saso L. NRF2, a crucial modulator of skin cells protection against vitiligo, psoriasis, and cancer. Biofactors 2022; 49:228-250. [PMID: 36310374 DOI: 10.1002/biof.1912] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/30/2022] [Accepted: 10/05/2022] [Indexed: 11/12/2022]
Abstract
The skin represents a physical barrier between the organism and the environment that has evolved to confer protection against biological, chemical, and physical insults. The inner layer, known as dermis, is constituted by connective tissue and different types of immune cells whereas the outer layer, the epidermis, is composed by different layers of keratinocytes and an abundant number of melanocytes, localized in the stratum basale of the epidermis. Oxidative stress is a common alteration of inflammatory skin disorders such as vitiligo, dermatitis, or psoriasis but can also play a causal role in skin carcinogenesis and tumor progression. Nuclear factor (erythroid-derived 2)-like 2 (NRF2) has emerged as a crucial regulator of cell defense mechanisms activating complex transcriptional programs that facilitate reactive oxygen species detoxification, repair oxidative damage and prevent xenobiotic-induced toxicity. Accumulating evidence suggests that the keratinocytes, melanocytes, and other skin cell types express high levels of NRF2, which is known to play a pivotal role in the skin homeostasis, differentiation, and metabolism during normal and pathologic conditions. In the present review, we summarize the current evidence linking NRF2 to skin pathophysiology and we discuss some recent modulators of NRF2 activity that have shown a therapeutic efficacy in skin protection against tumor initiation and common inflammatory skin conditions such as vitiligo or psoriasis, with a particular emphasis on natural compounds.
Collapse
Affiliation(s)
- Emiliano Panieri
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Rome, Italy
- Department of General Direction (DG), Section of Hazardous Substances, Environmental Education and Training for the Technical Coordination of Management Activities (DGTEC), Italian Institute for Environmental Protection and Research, Rome, Italy
| | | | - Luciano Saso
- Department of Physiology and Pharmacology "Vittorio Erspamer", Sapienza University of Rome, Rome, Italy
| |
Collapse
|
5
|
El Mahdi O, Ouakil A, Lachkar M. Non-volatile constituents from Monimiaceae, Siparunaceae and Atherospermataceae plant species and their bioactivities: An up-date covering 2000-2021. PHYTOCHEMISTRY 2022; 202:113291. [PMID: 35787353 DOI: 10.1016/j.phytochem.2022.113291] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Revised: 05/27/2022] [Accepted: 06/26/2022] [Indexed: 06/15/2023]
Abstract
The Monimiaceae, Siparunaceae, and Atherospermataceae, formerly included in the broad ''old'' Monimiaceae family, have long been known for their uses in traditional medicine and have proven to be rich sources of chemically diverse specialized metabolites with numerous potent biological and therapeutical properties. The progress made recently has expanded their phytochemistry and pharmacology albeit to different extents. This review focuses on the non-volatile constituents isolated from the three plant families during the last two decades and their emerging therapeutic potential. Based on the data collected from multiple databases without statistical analysis, approximately 93 components, of which 35 undescribed compounds including γ-lactones, alkaloids, terpenoids, flavonoids, and homogentisic acid derivatives, have been reported. Moreover, diverse biological activities of pure isolated compounds such as anticancer, antioxidant, antiparasitic, antiviral, and antibacterial activities have been evidenced. Besides offering new important perspectives for different diseases' management, the chemical and biological diversities among the isolated compounds, open promising avenues of research and contribute to renewed interest in these families needing further studies. This review provides an updated overview of their potential as sources of leads for drug discovery, while also highlighting ongoing challenges and future research opportunities.
Collapse
Affiliation(s)
- Ouafâa El Mahdi
- Laboratory of Natural Ressources and Environment, Polydisciplinary Faculty of Taza, Sidi Mohamed Ben Abdellah University, B.P. 1223, Taza Gare, Morocco.
| | - Abdelmoughite Ouakil
- Faculty of Sciences Dhar Lmehraz, Sidi Mohamed Ben Abdellah University, 30000, Fez, Morocco
| | - Mohammed Lachkar
- Faculty of Sciences Dhar Lmehraz, Sidi Mohamed Ben Abdellah University, 30000, Fez, Morocco
| |
Collapse
|
6
|
Kang JS, Zhao XY, Lee JH, Lee JS, Keum YS. Ethanol Extract of Chaenomeles sinensis Inhibits the Development of Benign Prostatic Hyperplasia by Exhibiting Anti-oxidant and Anti-inflammatory Effects. J Cancer Prev 2022; 27:42-49. [PMID: 35419308 PMCID: PMC8984646 DOI: 10.15430/jcp.2022.27.1.42] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2022] [Revised: 02/19/2022] [Accepted: 02/25/2022] [Indexed: 11/12/2022] Open
Abstract
Chaenomeles sinensis is known to inhibit the development and progression of many age-related diseases, but the underlying molecular mechanisms are largely unclear. In the present study, we observed that the ethanol extract of Chaenomeles sinensis scavenged 2,2’-diphenylpicrylhydrazyl and 2,2’-azinobis diammonium radicals in vitro. The ethanol extract of Chaenomeles sinensis activated antioxidant response element-luciferase activity and induced expression of NRF2 target genes in HaCaT cells. The ethanol extract of Chaenomeles sinensis also suppressed LPS-induced expression of COX-2 and iNOS proteins, and mRNA expression of TNF-α and IL-2 in RAW264.7 cells. Finally, the ethanol extract of Chaenomeles sinensis significantly suppressed testosterone propionate-induced benign prostatic hyperplasia in mice. Together, our study provides the evidence that the ethanol extract of Chaenomeles sinensis inhibits the development of benign prostatic hyperplasia by exhibiting anti-oxidant and anti-inflammatory effects.
Collapse
Affiliation(s)
- Jong Su Kang
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University, Goyang, Korea
| | - Xin Yi Zhao
- Department of Biotechnology and Functional Foods, College of Medical Sciences, Jeonju University, Jeonju, Korea
| | - Jeong Ho Lee
- Sunchang Research Institute of Health and Longevity, Sunchang, Korea
| | - Jeong-Sang Lee
- Department of Biotechnology and Functional Foods, College of Medical Sciences, Jeonju University, Jeonju, Korea
| | - Young-Sam Keum
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University, Goyang, Korea
| |
Collapse
|
7
|
Novel cytotoxic amphiphilic nitro-compounds derived from a synthetic route for paraconic acids. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.126984] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
|
8
|
Nam LB, Choi WJ, Keum YS. Triptolide Downregulates the Expression of NRF2 Target Genes by Increasing Cytoplasmic Localization of NRF2 in A549 Cells. Front Pharmacol 2021; 12:680167. [PMID: 34566633 PMCID: PMC8455929 DOI: 10.3389/fphar.2021.680167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 08/25/2021] [Indexed: 12/04/2022] Open
Abstract
We have identified triptolide as a novel NRF2 inhibitor, which significantly attenuates ARE-luciferase activity at nanomolar concentrations. Triptolide did not affect the level of NRF2, but significantly inhibited the expression of NRF2 target genes in A549 cells. We found that NRF2 possesses a previously unrecognized NES in the Neh2 domain, and that triptolide promotes an interaction between NRF2 and CRM1. Triptolide also decreased nuclear accumulation of NRF2, suggesting that it promotes nuclear export of NRF2. In addition, we show that triptolide decreased the expression of NRF2 target genes and increased intracellular oxidative stress, suppressing invasion and promoting cisplatin-induced apoptosis in A549 cells. Finally, oral administration of triptolide suppressed the growth of A549 xenografts in athymic mice by decreasing the expression of NRF2 target genes and promoting oxidative damages via the nuclear export of NRF2 and CRM1 in vivo. To the best of our knowledge, triptolide is the first type of compound to inhibit NRF2 by increasing cytoplasmic localization of NRF2.
Collapse
Affiliation(s)
- Le Ba Nam
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University, Goyang, South Korea
| | - Won Jun Choi
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University, Goyang, South Korea
| | - Young-Sam Keum
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University, Goyang, South Korea.,Panacea Co., Goyang, South Korea
| |
Collapse
|
9
|
Walter EH, Ge Y, Mason JC, Boyle JJ, Long NJ. A Coumarin-Porphyrin FRET Break-Apart Probe for Heme Oxygenase-1. J Am Chem Soc 2021; 143:6460-6469. [PMID: 33845576 PMCID: PMC8154531 DOI: 10.1021/jacs.0c12864] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2020] [Indexed: 12/15/2022]
Abstract
Heme oxygenase-1 (HO-1) is a vital enzyme in humans that primarily regulates free heme concentrations. The overexpression of HO-1 is commonly associated with cardiovascular and neurodegenerative diseases including atherosclerosis and ischemic stroke. Currently, there are no known chemical probes to detect HO-1 activity, limiting its potential as an early diagnostic/prognostic marker in these serious diseases. Reported here are the design, synthesis, and photophysical and biological characterization of a coumarin-porphyrin FRET break-apart probe to detect HO-1 activity, Fe-L1. We designed Fe-L1 to "break-apart" upon HO-1-catalyzed porphyrin degradation, perturbing the efficient FRET mechanism from a coumarin donor to a porphyrin acceptor fluorophore. Analysis of HO-1 activity using Escherichia coli lysates overexpressing hHO-1 found that a 6-fold increase in emission intensity at 383 nm was observed following incubation with NADPH. The identities of the degradation products following catabolism were confirmed by MALDI-MS and LC-MS, showing that porphyrin catabolism was regioselective at the α-position. Finally, through the analysis of Fe-L2, we have shown that close structural analogues of heme are required to maintain HO-1 activity. It is anticipated that this work will act as a foundation to design and develop new probes for HO-1 activity in the future, moving toward applications of live fluorescent imaging.
Collapse
Affiliation(s)
- Edward
R. H. Walter
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
- National
Lung and Heart Institute, Imperial College London, Du Cane Road, London W12 0NN, U.K.
| | - Ying Ge
- National
Lung and Heart Institute, Imperial College London, Du Cane Road, London W12 0NN, U.K.
| | - Justin C. Mason
- National
Lung and Heart Institute, Imperial College London, Du Cane Road, London W12 0NN, U.K.
| | - Joseph J. Boyle
- National
Lung and Heart Institute, Imperial College London, Du Cane Road, London W12 0NN, U.K.
| | - Nicholas J. Long
- Department
of Chemistry, Imperial College London, Molecular
Sciences Research Hub, White City Campus, Wood Lane, London W12 0BZ, U.K.
| |
Collapse
|
10
|
Marliolide Derivative Induces Melanosome Degradation via Nrf2/p62-Mediated Autophagy. Int J Mol Sci 2021; 22:ijms22083995. [PMID: 33924406 PMCID: PMC8070456 DOI: 10.3390/ijms22083995] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Revised: 04/05/2021] [Accepted: 04/10/2021] [Indexed: 12/14/2022] Open
Abstract
Nuclear factor erythroid 2-related factor 2 (Nrf2), which is linked to autophagy regulation and melanogenesis regulation, is activated by marliolide. In this study, we investigated the effect of a marliolide derivative on melanosome degradation through the autophagy pathway. The effect of the marliolide derivative on melanosome degradation was investigated in α-melanocyte stimulating hormone (α-MSH)-treated melanocytes, melanosome-incorporated keratinocyte, and ultraviolet (UV)B-exposed HRM-2 mice (melanin-possessing hairless mice). The marliolide derivative, 5-methyl-3-tetradecylidene-dihydro-furan-2-one (DMF02), decreased melanin pigmentation by melanosome degradation in α-MSH-treated melanocytes and melanosome-incorporated keratinocytes, evidenced by premelanosome protein (PMEL) expression, but did not affect melanogenesis-associated proteins. The UVB-induced hyperpigmentation in HRM-2 mice was also reduced by a topical application of DMF02. DMF02 activated Nrf2 and induced autophagy in vivo, evidenced by decreased PMEL in microtubule-associated proteins 1A/1B light chain 3B (LC3)-II-expressed areas. DMF02 also induced melanosome degradation via autophagy in vitro, and DMF02-induced melanosome degradation was recovered by chloroquine (CQ), which is a lysosomal inhibitor. In addition, Nrf2 silencing by siRNA attenuated the DMF02-induced melanosome degradation via the suppression of p62. DMF02 induced melanosome degradation in melanocytes and keratinocytes by regulating autophagy via Nrf2-p62 activation. Therefore, Nrf2 activator could be a promising therapeutic agent for reducing hyperpigmentation.
Collapse
|
11
|
Yoo OK, Choi WJ, Keum YS. Cardamonin Inhibits Oxazolone-Induced Atopic Dermatitis by the Induction of NRF2 and the Inhibition of Th2 Cytokine Production. Antioxidants (Basel) 2020; 9:antiox9090834. [PMID: 32906636 PMCID: PMC7555155 DOI: 10.3390/antiox9090834] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2020] [Revised: 07/24/2020] [Accepted: 07/25/2020] [Indexed: 12/30/2022] Open
Abstract
The skin is constantly exposed to various types of chemical stresses that challenge the immune cells, leading to the activation of T cell-mediated hypersensitivity reactions including atopic dermatitis. Previous studies have demonstrated that a variety of natural compounds are effective against development of atopic dermatitis by modulating immune responses. Cardamonin is a natural compound abundantly found in cardamom spices and many other medicinal plant species. In the present study, we attempted to examine whether cardamonin could inhibit oxazolone-induced atopic dermatitis in vivo. Our results show that topical application of cardamonin onto the ear of mice suppressed oxazolone-induced inflammation in the ear and hyperplasia in the spleen. Cardamonin also inhibited oxazolone-induced destruction of connective tissues and subsequent infiltration of mast cells into the skin. In addition, we found that the production of Th2 cytokines is negatively regulated by NRF2, and the induction of NRF2 by cardamonin contributed to suppressing oxazolone-induced Th2 cytokine production and oxidative damages in vivo. Together, our results demonstrate that cardamonin is a promising natural compound, which might be effective for treatment of atopic dermatitis.
Collapse
Affiliation(s)
| | | | - Young-Sam Keum
- Correspondence: ; Tel.: +82-31-961-5215; Fax: +82-31-961-5206
| |
Collapse
|
12
|
Nam LB, Keum YS. Regulation of NRF2 by Na +/K +-ATPase: implication of tyrosine phosphorylation of Src. Free Radic Res 2020; 54:883-893. [PMID: 32114856 DOI: 10.1080/10715762.2020.1735633] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Tumors adapt well to the imbalanced redox status created by rapid growth and limited nutrient availability because they highly express high levels of NRF2 to counteract oxidative stress. Therefore, inhibition of NRF2 is currently considered a feasible strategy for development of chemotherapeutic agents. In the present study, we identified that Na+/K+-ATPase regulates NRF2 in A549 cells. Suppression of Na+/K+-ATPase by convallatoxin or siRNAs downregulates NRF2 in A549 cells, and this event is mediated by Ca2+-dependent induction of CSK1 and subsequent phosphorylation of SRC at Tyr 527. Consistent with this finding, knocking down the α1 or β1 subunit of Na+/K+-ATPase promotes the generation of intracellular ROS by cisplatin and potentiates cisplatin-induced apoptosis and autophagy in A549 cells. Our study reveals that the signaling axis composed of Na+/K+-ATPase, CSK1, and tyrosine phosphorylation of Src could be a useful target for development of NRF2 inhibitors.
Collapse
Affiliation(s)
- Le Ba Nam
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University, Goyang, Korea
| | - Young-Sam Keum
- College of Pharmacy and Integrated Research Institute for Drug Development, Dongguk University, Goyang, Korea
| |
Collapse
|
13
|
Ahn S, Basavana Gowda M, Lee M, Masagalli JN, Mailar K, Choi WJ, Noh M. Novel linked butanolide dimer compounds increase adiponectin production during adipogenesis in human mesenchymal stem cells through peroxisome proliferator-activated receptor γ modulation. Eur J Med Chem 2020; 187:111969. [DOI: 10.1016/j.ejmech.2019.111969] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/28/2019] [Accepted: 12/11/2019] [Indexed: 12/15/2022]
|
14
|
Wang K, Hu S, Wang B, Wang J, Wang X, Xu C. Genistein protects intervertebral discs from degeneration via Nrf2-mediated antioxidant defense system: An in vitro and in vivo study. J Cell Physiol 2019; 234:16348-16356. [PMID: 30779107 DOI: 10.1002/jcp.28301] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2018] [Revised: 12/23/2018] [Accepted: 01/10/2019] [Indexed: 02/06/2023]
Abstract
Oxidative stress has been reported to be closely associated with the development of intervertebral disc degeneration (IDD). IDD is one of the major causes of low back pain. Genistein (GES), one of the main isoflavones of soybean, has been shown to exert multiple biological functions on different diseases. Here, we tested the therapeutic potential of GES for IDD. In vitro experiments, we confirmed GES was nontoxic to rat nucleus pulposus cells (NPCs) within the concentration of 100 μM. Furthermore, GES was able to suppress apoptosis in tert-butyl hydroperoxide (TBHP)-treated NPCs. In the aspect of extracellular matrix (ECM), GES not only reduced metalloproteinase-13 (MMP-13) and a disintegrin-like and MMP thrombospondin type 1 motif 5 expression, but also increased aggrecan and type II collagen levels. Also, we found GES might rescue TBHP-induced NPCs degeneration by enhancing Nrf2-mediated antioxidant defense system. Silencing Nrf2 partly abolished the protective effects of GES on apoptosis and ECM disruption in TBHP-treated NPCs. Correspondingly, GES ameliorated IDD in a rat model by preserving morphology of degenerative intervertebral discs and promoting Nrf2 expression. To sum up, our study suggests that GES exerts protective effects in NPCs against degeneration and reveals the underlying mechanism of GES on Nrf2 activation in NPCs.
Collapse
Affiliation(s)
- Ke Wang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Sunli Hu
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Ben Wang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Jianle Wang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Xiangyang Wang
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China.,The Second School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Cong Xu
- Department of Orthopaedics Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| |
Collapse
|
15
|
Choi M, Park M, Lee S, Lee JW, Choi WJ, Lee C. Establishment of Nrf2-deficient HaCaT and immortalized primary human foreskin keratinocytes and characterization of their responses to ROS-induced cytotoxicity. Toxicol In Vitro 2019; 61:104602. [PMID: 31319135 DOI: 10.1016/j.tiv.2019.104602] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2019] [Revised: 07/12/2019] [Accepted: 07/13/2019] [Indexed: 02/08/2023]
Abstract
Nuclear factor erythroid 2-like 2 (Nrf2) is a key transcription factor responsible for the induction of cytoprotective genes when a cell is exposed to reactive oxygen species (ROS). Insufficient ROS neutralization has been associated with undesirable changes in the skin caused by age and disease. In order to mimic the pathological conditions of these oxidative stress-induced skin disorders, we established Nrf2-deficient HaCaT and immortalized human foreskin keratinocyte (iHFK) cell lines via lentiviral transduction of Nrf2-targeting short-hairpin RNAs. Their transcriptional, as well as translational blockage of Nrf2 expression, was verified by using a proteasomal inhibitor (MG132) and well-known Nrf2 activator (α-lipoic acid (ALA)). Reduced expression of NADPH dehydrogenase quinone 1 (NQO-1) and heme oxygenase 1 (HO-1) genes, which are well-characterized downstream targets of Nrf2-mediated transactivation, was also confirmed by using ALA and another Nrf2 activator, marliolide. In general, iHFK cells displayed more enhanced cytotoxicity to menadione, a ROS-generating reference compound, than HaCaT cells. In addition, the Nrf2 deficiency highly potentiated the cytotoxic effects of menadione in both HaCaT and iHFK cells. Interestingly, pretreatment of either ALA or marliolide conferred protection against the ROS induction and the subsequent development of cytotoxicity by menadione in both HaCaT and iHFK cells regardless of the Nrf2 status. These data suggest a possibility for activation of Nrf2-independent ROS detoxification pathways by either ALA or marliolide. These newly established Nrf2-deficient HaCaT and iHFK cell lines should be useful as a highly ROS-sensitive damaged skin model for the study of age-dependent cellular changes in an in vitro setting.
Collapse
Affiliation(s)
- Moonju Choi
- College of Pharmacy, Dongguk University, Goyang 10326, Republic of Korea
| | - Minkyung Park
- College of Pharmacy, Dongguk University, Goyang 10326, Republic of Korea
| | - Sungjin Lee
- College of Pharmacy, Dongguk University, Goyang 10326, Republic of Korea
| | - Jeong Woo Lee
- Department of Urology, Dongguk University Ilsan Hospital, Dongguk University College of Medicine, Goyang 10326, Republic of Korea
| | - Won Jun Choi
- College of Pharmacy, Dongguk University, Goyang 10326, Republic of Korea
| | - Choongho Lee
- College of Pharmacy, Dongguk University, Goyang 10326, Republic of Korea.
| |
Collapse
|
16
|
Yoo OK, Keum YS. 4'-O-β-D-Glucosyl-5-O-Methylvisamminol Attenuates Pro-Inflammatory Responses and Protects against Oxidative Damages. Biomol Ther (Seoul) 2019; 27:381-385. [PMID: 30971060 PMCID: PMC6609110 DOI: 10.4062/biomolther.2018.232] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 02/17/2019] [Accepted: 03/04/2019] [Indexed: 11/14/2022] Open
Abstract
We attempted to examine anti-inflammatory and anti-oxidant effects of 4′-O-β-D-glucosyl-5-O-methylvisamminol (GOMV), the first epigenetic inhibitor of histone phosphorylation at Ser10. While GOMV did not affect the viability of murine macrophage RAW 264.7 cells, it significantly suppressed lipopolysaccharide (LPS)-induced generation of prostaglandin E2 (PGE2) and nitric oxide (NO) through transcriptional inhibition of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS). GOMV also scavenged free radicals in vitro, increased NF-E2-related factor 2 (NRF2), and activated antioxidant response element (ARE), thereby resulting in the induction of phase II cytoprotective enzymes in human keratinocyte HaCaT cells. Finally, GOMV significantly protected HaCaT cells against 12-O-tetradecanoylphorbol-13-acetate (TPA)-induced oxidative intracellular damages. Together, our results illustrate that GOMV possesses anti-inflammatory and anti-oxidant activity.
Collapse
Affiliation(s)
- Ok-Kyung Yoo
- Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Goyang 10326, Republic of Korea
| | - Young-Sam Keum
- Integrated Research Institute for Drug Development, College of Pharmacy, Dongguk University, Goyang 10326, Republic of Korea
| |
Collapse
|
17
|
Kutsumura N, Inagaki M, Kiriseko A, Saito T. Total Synthesis of 3-epi-Juruenolide C. Chem Pharm Bull (Tokyo) 2019; 67:594-598. [PMID: 31155565 DOI: 10.1248/cpb.c19-00209] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
In this study, the total synthesis of 3-epi-juruenolide C is achieved in 10 steps (longest linear sequence) starting from ethyl (2E,4S,5S)-4,5-dihydroxy-2-hexenoate. The synthetic highlights of our approach include one-pot regioselective bromination, intramolecular carbonylation using bis(triphenylphosphine)dicarbonylnickel, and face-selective hydrogenation using a homogeneous Wilkinson's catalyst.
Collapse
Affiliation(s)
- Noriki Kutsumura
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba.,Department of Chemistry, Faculty of Science, Tokyo University of Science
| | - Mai Inagaki
- Department of Chemistry, Faculty of Science, Tokyo University of Science
| | - Akito Kiriseko
- Department of Chemistry, Faculty of Science, Tokyo University of Science
| | - Takao Saito
- Department of Chemistry, Faculty of Science, Tokyo University of Science
| |
Collapse
|
18
|
Gu X, Jiang Y, Chen J, Zhang Y, Guan M, Li X, Zhou Q, Lu Q, Qiu J, Yin X. Synthesis and biological evaluation of bifendate derivatives bearing acrylamide moiety as novel antioxidant agents. Eur J Med Chem 2019; 162:59-69. [DOI: 10.1016/j.ejmech.2018.11.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Accepted: 11/01/2018] [Indexed: 12/29/2022]
|
19
|
Sebastián VP, Salazar GA, Coronado-Arrázola I, Schultz BM, Vallejos OP, Berkowitz L, Álvarez-Lobos MM, Riedel CA, Kalergis AM, Bueno SM. Heme Oxygenase-1 as a Modulator of Intestinal Inflammation Development and Progression. Front Immunol 2018; 9:1956. [PMID: 30258436 PMCID: PMC6143658 DOI: 10.3389/fimmu.2018.01956] [Citation(s) in RCA: 42] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 08/08/2018] [Indexed: 12/19/2022] Open
Abstract
Heme Oxygenase 1 (HMOX1) is an enzyme that catalyzes the reaction that degrades the heme group contained in several important proteins, such as hemoglobin, myoglobin, and cytochrome p450. The enzymatic reaction catalyzed by HMOX1 generates Fe2+, biliverdin and CO. It has been shown that HMOX1 activity and the by-product CO can downmodulate the damaging immune response in several models of intestinal inflammation as a result of pharmacological induction of HMOX1 expression and the administration of non-toxic amounts of CO. Inflammatory Bowel Diseases, which includes Crohn's Disease (CD) and Ulcerative Colitis (UC), are one of the most studied ailments associated to HMOX1 effects. However, microbiota imbalances and infections are also important factors influencing the occurrence of acute and chronic intestinal inflammation, where HMOX1 activity may play a major role. As part of this article we discuss the immune modulatory capacity of HMOX1 during IBD, as well during the infections and interactions with the microbiota that contribute to this inflammatory disease.
Collapse
Affiliation(s)
- Valentina P. Sebastián
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Geraldyne A. Salazar
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Irenice Coronado-Arrázola
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Bárbara M. Schultz
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Omar P. Vallejos
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Loni Berkowitz
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Manuel M. Álvarez-Lobos
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Gastroenterología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Claudia A. Riedel
- Millennium Institute on Immunology and Immunotherapy, Facultad de Ciencias de la Vida, Departamento de Ciencias Biológicas, Universidad Andrés Bello, Santiago, Chile
| | - Alexis M. Kalergis
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
- Departamento de Endocrinología, Facultad de Medicina, Pontificia Universidad Católica de Chile, Santiago, Chile
| | - Susan M. Bueno
- Millennium Institute on Immunology and Immunotherapy, Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Santiago, Chile
| |
Collapse
|
20
|
Kutsumura N, Kiriseko A, Niwa K, Saito T. Total Syntheses of 3-epi-Litsenolide D2 and Lincomolide A. J Org Chem 2018; 83:11450-11457. [DOI: 10.1021/acs.joc.8b01825] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Noriki Kutsumura
- International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Akito Kiriseko
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Kentaro Niwa
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| | - Takao Saito
- Department of Chemistry, Faculty of Science, Tokyo University of Science, Kagurazaka, Shinjuku-ku, Tokyo 162-8601, Japan
| |
Collapse
|