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Guo Y, Wang M, Wu Z, Shi Y, Wang Y, Zhang S, Jin B, Cui S, Zhao G. Ultrafast non-adiabatic dynamics of stilbene-based plant-derived sunscreens with cis-trans isomerization structures. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 298:122759. [PMID: 37119635 DOI: 10.1016/j.saa.2023.122759] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2022] [Revised: 04/09/2023] [Accepted: 04/15/2023] [Indexed: 05/26/2023]
Abstract
In this work, we investigated the potential UV protection mechanism of the natural compounds hydroxy resveratrol and pterostilbene by combining theoretical calculations and femtosecond transient absorption spectra (FTAS). The UV absorption spectra showed that the two compounds exhibited strong absorption properties and high photostability. We found two molecules will reach the S1 state or an even higher excited state after UV exposure and molecules in S1 will cross a lower energy barrier to reach the conical intersection. The adiabatic trans-cis isomerization process happened and finally return to the ground. Meanwhile, FTAS clarified the time scale of trans-cis isomerization of two molecules was ∼ 10 ps, which also met the requirement of fast energy relaxation. This work also provides theoretical guidance for developing new sunscreen molecules from natural stilbene.
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Affiliation(s)
- Yurong Guo
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China
| | - Mengqi Wang
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China
| | - Zibo Wu
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China
| | - Yanan Shi
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China
| | - Ye Wang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Song Zhang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Bing Jin
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan 430071, China
| | - Shen Cui
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China
| | - Guangjiu Zhao
- Department of Chemistry, MeChem Group, Molecular Dynamic Chemistry Center, Tianjin Key Laboratory of Molecular Optoelectronic Sciences, National Demonstration Center for Experimental Chemistry & Chemical Engineering Education, School of Science, Tianjin University, Tianjin 300354, China.
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Alam N, Najnin H, Islam M, Shakya S, Khan IM, Zaidi R. Biochemical and histopathological analysis after sub-chronic administration of oxyresveratrol in Wistar rats. Drug Chem Toxicol 2023; 46:166-175. [PMID: 34913788 DOI: 10.1080/01480545.2021.2015243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Oxyresveratrol (OXY) is a naturally occurring phenolic compound; however, there are no toxicity studies reported on its long term use. The aim of our work was to demonstrate the evaluation of acute and sub-chronic toxicity of oxyresveratrol in rats to assess its safety profile. To evaluate the LD50 value, 2000 mg/kg of oxyresveratrol was administered to Wistar rats by oral gavage. For sub-chronic toxicity assessment, 80 Wistar rats were randomly divided into four groups (10 animal/sex/group) and oxyresveratrol administered at a dose of 50, 100, 150 mg/kg/day by oral gavage. Bodyweight, food, and water consumption were monitored every week. At the end of the experiments, biochemical and hematological parameters were analyzed. Gross and microscopic organ analyses were also carried out. LD50 of oxyresveratrol was greater than 2000 mg/kg sub-chronic administration of oxyresveratrol did not influence any mortality. Doses of 50 and 100 mg/kg of oxyresveratrol did not produce any sign of toxicity. However, the 150 mg/kg oxyresveratrol group depicted changes in multiple biochemical and hematological parameters with changes in the pathology of cardiac, hepatic, and renal tissues when compared with control. Therefore, no observed adverse effect level (NOAEL) of oxyresveratrol was observed to be 100 mg/kg per day for both male and female rats.
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Affiliation(s)
- Nisat Alam
- Department of Biochemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Hasina Najnin
- Department of Biochemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
| | - Maidul Islam
- Department of Chemistry, Faculty of Science, Aligarh Muslim University, Aligarh, India
| | - Sonam Shakya
- Department of Chemistry, Faculty of Science, Aligarh Muslim University, Aligarh, India
| | - Ishaat M Khan
- Department of Chemistry, Faculty of Science, Aligarh Muslim University, Aligarh, India
| | - Rana Zaidi
- Department of Biochemistry, School of Chemical and Life Sciences, Jamia Hamdard, New Delhi, India
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Han Q, Chen ZJ, Du Y. Dietary supplementation for female infertility: Recent advances in the nutritional therapy for premature ovarian insufficiency. Front Microbiol 2022; 13:1001209. [PMID: 36466679 PMCID: PMC9712792 DOI: 10.3389/fmicb.2022.1001209] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2022] [Accepted: 11/01/2022] [Indexed: 08/27/2023] Open
Abstract
Premature ovarian insufficiency (POI) ranks top in the reproductive disorders that may impair multiple functioning systems, reduce the quality of life and ultimately deprive patients of their fertility among women. Symptoms can be partially alleviated by present hormone replacement therapy that cannot improve conception or decrease occurrence rates of systemic complication. Nutritional dietary supplements are attracting more and more attention because of their safety, bioavailability, and efficacy for well-being. Nutrients in the daily food are composed of carbohydrates, fat and lipoprotein, protein and polypeptide, vitamins, and vegetable or fruits containing phytoestrogens. These are functional nutrients due to the proliferative, anti-inflammatory, anti-oxidant, and mitochondria-protective potential during the course of menopause. Apart from dietary nutrients, microbe-related nutritional substances, including probiotics, prebiotics and the combination-synbiotics, display high potential as well in supporting estrous cycle, ovarian viability and modulating other vital reproductive functions. The present review will discuss dietary and microbial nutrients and their roles and applications in the living body based upon animal or human research, evaluate possible effect mechanisms from molecular, cellular and tissue levels, and provide insights into nutritional therapy for prolonging reproductive lifespan in female patients.
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Affiliation(s)
- Qixin Han
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
| | - Zi-Jiang Chen
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
- Center for Reproductive Medicine, Cheeloo College of Medicine, Shandong University, Jinan, China
- National Research Center for Assisted Reproductive Technology and Reproductive Genetics, Shandong University, Jinan, China
- Key Laboratory of Reproductive Endocrinology of Ministry of Education, Shandong University, Jinan, China
| | - Yanzhi Du
- Center for Reproductive Medicine, Renji Hospital, School of Medicine, Shanghai Jiao Tong University, Shanghai, China
- Shanghai Key Laboratory for Assisted Reproduction and Reproductive Genetics, Shanghai, China
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4
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Buhre JS, Becker M, Ehlers M. IgG subclass and Fc glycosylation shifts are linked to the transition from pre- to inflammatory autoimmune conditions. Front Immunol 2022; 13:1006939. [PMID: 36405742 PMCID: PMC9669588 DOI: 10.3389/fimmu.2022.1006939] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/20/2022] [Indexed: 11/06/2022] Open
Abstract
A crucial factor for the development of inflammatory autoimmune diseases is the occurrence of antibodies directed against self-tissues and structures, which leads to damage and inflammation. While little is known about the cause of the development of mis-directed, disease-specific T and B cells and resulting IgG autoantibody responses, there is increasing evidence that their induction can occur years before disease symptoms appear. However, a certain proportion of healthy individuals express specific IgG autoantibodies without disease symptoms and not all subjects who generate autoantibodies may develop disease symptoms. Thus, the development of inflammatory autoimmune diseases seems to involve two steps. Increasing evidence suggests that harmless self-directed T and B cell and resulting IgG autoantibody responses in the pre-autoimmune disease stage might switch to more inflammatory T and B cell and IgG autoantibody responses that trigger the inflammatory autoimmune disease stage. Here, we summarize findings on the transition from the pre-disease to the disease stage and vice versa, e.g. by pregnancy and treatment, with a focus on low-/anti-inflammatory versus pro-inflammatory IgG autoantibody responses, including IgG subclass and Fc glycosylation features. Characterization of biomarkers that identify the transition from the pre-disease to the disease stage might facilitate recognition of the ideal time point of treatment initiation and the development of therapeutic strategies for re-directing inflammatory autoimmune conditions.
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Affiliation(s)
- Jana Sophia Buhre
- Laboratories of Immunology and Antibody Glycan Analysis, Institute of Nutritional Medicine, University of Lübeck and University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Mareike Becker
- Department of Dermatology, Allergology, and Venereology, University of Lübeck and University Hospital Schleswig-Holstein, Lübeck, Germany
| | - Marc Ehlers
- Laboratories of Immunology and Antibody Glycan Analysis, Institute of Nutritional Medicine, University of Lübeck and University Hospital Schleswig-Holstein, Lübeck, Germany
- Airway Research Center North, German Center for Lung Research (DZL), University of Lübeck, Lübeck, Germany
- *Correspondence: Marc Ehlers,
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Kazantseva L, Becerra J, Santos-Ruiz L. Traditional Medicinal Plants as a Source of Inspiration for Osteosarcoma Therapy. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27155008. [PMID: 35956961 PMCID: PMC9370649 DOI: 10.3390/molecules27155008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 07/28/2022] [Accepted: 07/29/2022] [Indexed: 11/16/2022]
Abstract
Osteosarcoma is one of the most common types of bone cancers among paediatric patients. Despite the advances made in surgery, chemo-, and radiotherapy, the mortality rate of metastatic osteosarcoma remains unchangeably high. The standard drug combination used to treat this bone cancer has remained the same for the last 20 years, and it produces many dangerous side effects. Through history, from ancient to modern times, nature has been a remarkable source of chemical diversity, used to alleviate human disease. The application of modern scientific technology to the study of natural products has identified many specific molecules with anti-cancer properties. This review describes the latest discovered anti-cancer compounds extracted from traditional medicinal plants, with a focus on osteosarcoma research, and on their cellular and molecular mechanisms of action. The presented compounds have proven to kill osteosarcoma cells by interfering with different pathways: apoptosis induction, stimulation of autophagy, generation of reactive oxygen species, etc. This wide variety of cellular targets confer natural products the potential to be used as chemotherapeutic drugs, and also the ability to act as sensitizers in drug combination treatments. The major hindrance for these molecules is low bioavailability. A problem that may be solved by chemical modification or nano-encapsulation.
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Affiliation(s)
- Liliya Kazantseva
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29590 Málaga, Spain
| | - José Becerra
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29590 Málaga, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Department of Cell Biology, Genetics and Physiology, Universidad de Málaga, 29071 Málaga, Spain
| | - Leonor Santos-Ruiz
- Instituto de Investigación Biomédica de Málaga y Plataforma en Nanomedicina-IBIMA Plataforma BIONAND, 29590 Málaga, Spain
- Centro de Investigación Biomédica en Red de Bioingeniería, Biomateriales y Nanomedicina (CIBER-BBN), Instituto de Salud Carlos III, 28029 Madrid, Spain
- Department of Cell Biology, Genetics and Physiology, Universidad de Málaga, 29071 Málaga, Spain
- Correspondence:
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Palabiyik-Yucelik SS, Moser S, Becker K, Halici Z, Bayir Y, Stonig M, Schennach H, Fuchs D, Gostner JM, Kurz K. Oxyresveratrol modulates the immune response in vitro. Pteridines 2021. [DOI: 10.1515/pteridines-2020-0029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
The naturally occurring stilbenoid oxyresveratrol was shown to influence inflammatory and metabolic processes. During cellular immune activation, tryptophan breakdown and neopterin formation via the enzymes indoleamine 2,3-dioxygenase-1 (IDO-1) and GTP-cyclohydrolase, respectively, are induced. Neopterin and the kynurenine to tryptophan ratio are reliable and pertinent biomarkers of Th1-type immune response and are also used in vitro to monitor effects of active plant ingredients on peripheral blood mononuclear cells (PBMCs). We investigated the effects of oxyresveratrol on the activity of the above-mentioned pathways in mitogen-stimulated human PBMC and in the myelomonocytic cell line THP-1. Oxyresveratrol exerted suppressive effects on tryptophan breakdown in both stimulated cell models. Of note, in PBMC, tryptophan breakdown was induced at lower concentrations (5–20 µM) and suppressed at higher treatment concentrations only. Neopterin formation was decreased dose-dependently in stimulated PBMC. In unstimulated PBMC similar, albeit lesser effects were observed. Data indicate that oxyresveratrol exerts distinct and concentration-dependent effects on different immune cell types. IDO-1 is targeted by oxyresveratrol and its activity can be modulated in both directions. Detailed investigations of the interactions would be interesting to fully explore the activity of this phytocompound.
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Affiliation(s)
- Saziye Sezin Palabiyik-Yucelik
- Department of Pharmaceutical Toxicology, Faculty of Pharmacy, Atatürk University , Erzurum , Turkey
- Institute of Biological Chemistry, Biocenter, Medical University of Innsbruck , Innsbruck , Austria
- Clinical Research, Development and Design Application and Research Center, Atatürk University , Erzurum , Turkey
| | - Simone Moser
- Department of Pharmacy, Pharmaceutical Biology, Ludwig-Maximilians University of Munich , Munich , Germany
| | - Kathrin Becker
- Institute of Biological Chemistry, Biocenter, Medical University of Innsbruck , Innsbruck , Austria
| | - Zekai Halici
- Clinical Research, Development and Design Application and Research Center, Atatürk University , Erzurum , Turkey
- Department of Pharmacology, Faculty of Medicine, Atatürk University , Erzurum , Turkey
| | - Yasin Bayir
- Department of Biochemistry, Faculty of Pharmacy, Atatürk University , Erzurum , Turkey
| | - Marlies Stonig
- Institute of Medical Biochemistry, Biocenter, Medical University of Innsbruck , Innsbruck , Austria
| | - Harald Schennach
- Central Institute of Blood Transfusion and Immunology, University Hospital of Innsbruck , Innsbruck , Austria
| | - Dietmar Fuchs
- Institute of Biological Chemistry, Biocenter, Medical University of Innsbruck , Innsbruck , Austria
| | - Johanna M. Gostner
- Institute of Medical Biochemistry, Biocenter, Medical University of Innsbruck , Innsbruck , Austria
| | - Katharina Kurz
- Department of Internal Medicine II, Infectious Diseases, Pneumology, Rheumatology, Medical University of Innsbruck , Anichstrasse 35 , 6020 Innsbruck , Austria
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Likhitwitayawuid K. Oxyresveratrol: Sources, Productions, Biological Activities, Pharmacokinetics, and Delivery Systems. Molecules 2021; 26:4212. [PMID: 34299485 PMCID: PMC8307110 DOI: 10.3390/molecules26144212] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 07/05/2021] [Accepted: 07/08/2021] [Indexed: 12/18/2022] Open
Abstract
Oxyresveratrol has recently attracted much research attention due to its simple chemical structure and diverse therapeutic potentials. Previous reviews describe the chemistry and biological activities of this phytoalexin, but additional coverage and greater accessibility are still needed. The current review provides a more comprehensive summary, covering research from 1955 to the present year. Oxyresveratrol occurs in both gymnosperms and angiosperms. However, it has never been reported in plants in the subclass Sympetalae, and this point might be of both chemotaxonomic and biosynthetic importance. Oxyresveratrol can be easily obtained from plant materials by conventional methods, and several systems for both qualitative and quantitative analysis of oxyresveratrol contents in plant materials and plant products are available. Oxyresveratrol possesses diverse biological and pharmacological activities such as the inhibition of tyrosinase and melanogenesis, antioxidant and anti-inflammatory activities, and protective effects against neurological disorders and digestive ailments. However, the unfavorable pharmacokinetic properties of oxyresveratrol, including low water solubility and poor oral availability and stability, have posed challenges to its development as a useful therapeutic agent. Recently, several delivery systems have emerged, with promising outcomes that may improve chances for the clinical study of oxyresveratrol.
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Affiliation(s)
- Kittisak Likhitwitayawuid
- Department of Pharmacognosy and Pharmaceutical Botany, Faculty of Pharmaceutical Sciences, Chulalongkorn University, Bangkok 10330, Thailand
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Gaglio SC, Donini M, Denbaes PE, Dusi S, Perduca M. Oxyresveratrol Inhibits R848-Induced Pro-Inflammatory Mediators Release by Human Dendritic Cells Even When Embedded in PLGA Nanoparticles. Molecules 2021; 26:molecules26082106. [PMID: 33916909 PMCID: PMC8067564 DOI: 10.3390/molecules26082106] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 03/29/2021] [Accepted: 04/03/2021] [Indexed: 12/12/2022] Open
Abstract
Oxyresveratrol, a stilbene extracted from the plant Artocarpus lakoocha Roxb., has been reported to provide a considerable anti-inflammatory activity. Since the mechanisms of this therapeutic action have been poorly clarified, we investigated whether oxyresveratrol affects the release of the pro-inflammatory cytokines IL-12, IL-6, and TNF-α by human dendritic cells (DCs). We found that oxyresveratrol did not elicit per se the release of these cytokines, but inhibited their secretion induced upon DC stimulation with R848 (Resiquimod), a well-known immune cell activator engaging receptors recognizing RNA viruses. We then investigated whether the inclusion of oxyresveratrol into nanoparticles promoting its ingestion by DCs could favor its effects on cytokine release. For this purpose we synthesized and characterized poly(lactic-co-glycolic acid) (PLGA) nanoparticles, and we assessed their effects on DCs. We found that bare PLGA nanoparticles did not affect cytokine secretion by resting DCs, but increased IL-12, IL-6, and TNF-α secretion by R848-stimulated DCs, an event known as “priming effect”. We then loaded PLGA nanoparticles with oxyresveratrol and we observed that oxyresveratrol-bearing particles did not stimulate the cytokine release by resting DCs and inhibited the PLGA-dependent enhancement of IL-12, IL-6, and TNF-α secretion by R848-stimulated DCs. The results herein reported indicate that oxyresveratrol suppresses the cytokine production by activated DCs, thus representing a good anti-inflammatory and immune-suppressive agent. Moreover, its inclusion into PLGA nanoparticles mitigates the pro-inflammatory effects due to cooperation between nanoparticles and R848 in cytokine release. Therefore, oxyresveratrol can be able to contrast the synergistic effects of nanoparticles with microorganisms that could be present in the patient tissues, therefore overcoming a condition unfavorable to the use of some nanoparticles in biological systems.
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Affiliation(s)
- Salvatore Calogero Gaglio
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (S.C.G.); (P.E.D.)
| | - Marta Donini
- Department of Medicine, Section of General Pathology, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy;
| | - Piyachat Evelyn Denbaes
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (S.C.G.); (P.E.D.)
| | - Stefano Dusi
- Department of Medicine, Section of General Pathology, University of Verona, Strada Le Grazie 8, 37134 Verona, Italy;
- Correspondence: (S.D.); (M.P.); Tel.: +39-045-802-7124 (S.D.); +39-045-802-7984 (M.P.)
| | - Massimiliano Perduca
- Department of Biotechnology, University of Verona, Strada Le Grazie 15, 37134 Verona, Italy; (S.C.G.); (P.E.D.)
- Correspondence: (S.D.); (M.P.); Tel.: +39-045-802-7124 (S.D.); +39-045-802-7984 (M.P.)
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Gan WJ, Gao CL, Zhang WQ, Gu JL, Zhao TT, Guo HL, Zhou H, Xu Y, Yu LL, Li LF, Gui DK, Xu YH. Kuwanon G protects HT22 cells from advanced glycation end product-induced damage. Exp Ther Med 2021; 21:425. [PMID: 33747164 PMCID: PMC7967837 DOI: 10.3892/etm.2021.9869] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2019] [Accepted: 09/11/2020] [Indexed: 12/25/2022] Open
Abstract
The incidence of diabetic encephalopathy is increasing as the population ages. Evidence suggests that formation and accumulation of advanced glycation end products (AGEs) plays a pivotal role in disease progression, but limited research has been carried out in this area. A previous study demonstrated that Kuwanon G (KWG) had significant anti-oxidative stress and anti-inflammatory properties. As AGEs are oxidative products and inflammation is involved in their generation it is hypothesized that KWG may have effects against AGE-induced neuronal damage. In the present study, mouse hippocampal neuronal cell line HT22 was used. KWG was shown to significantly inhibit AGE-induced cell apoptosis in comparison with a control treatment, as determined by both MTT and flow cytometry. Compared with the AGEs group, expression of pro-apoptotic protein Bax was reduced and expression of anti-apoptotic protein Bcl-2 was increased in the AGEs + KWG group. Both intracellular and extracellular levels of acetylcholine and choline acetyltransferase were significantly elevated after KWG administration in comparison with controls whilethe level of acetylcholinesterase decreased. These changes in protein expression were accompanied by increased levels of superoxide dismutase and glutathione peroxidase synthesis and reduced production of malondialdehyde and reactive oxygen species. Intracellular signaling pathway protein levels were determined by western blot and immunocytochemistry. KWG administration was found to prevent AGE-induced changes to the phosphorylation levels of Akt, IκB-α, glycogen synthase kinase 3 (GSK3)-α and β, p38 MAPK and NF-κB p65 suggesting a potential neuroprotective effect of KWG against AGE-induced damage was via the PI3K/Akt/GSK3αβ signaling pathway. The findings of the present study suggest that KWG may be a potential treatment for diabetic encephalopathy.
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Affiliation(s)
- Wen-Jun Gan
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR 999078, P.R. China
| | - Chen-Lin Gao
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR 999078, P.R. China.,Department of Endocrinology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 510500, P.R. China
| | - Wen-Qian Zhang
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR 999078, P.R. China
| | - Jun-Ling Gu
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR 999078, P.R. China
| | - Ting-Ting Zhao
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR 999078, P.R. China
| | - Heng-Li Guo
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR 999078, P.R. China
| | - Hua Zhou
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR 999078, P.R. China
| | - Yong Xu
- Department of Endocrinology, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan 510500, P.R. China
| | - Li-Li Yu
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR 999078, P.R. China
| | - Li-Fang Li
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR 999078, P.R. China
| | - Ding-Kun Gui
- Department of Nephrology, Shanghai Jiaotong University Affiliated Sixth People's Hospital, Shanghai 200233, P.R. China
| | - You-Hua Xu
- Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Taipa, Macao SAR 999078, P.R. China
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Lv T, Jian Z, Li D, Ao R, Zhang X, Yu B. Oxyresveratrol induces apoptosis and inhibits cell viability via inhibition of the STAT3 signaling pathway in Saos‑2 cells. Mol Med Rep 2020; 22:5191-5198. [PMID: 33174060 PMCID: PMC7646976 DOI: 10.3892/mmr.2020.11591] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2020] [Accepted: 09/17/2020] [Indexed: 12/12/2022] Open
Abstract
Oxyresveratrol (ORES) is a natural phenolic compound with multiple biological functions including antioxidation, anti-inflammation and neuroprotection; however, the inhibitory effect of ORES on osteosarcoma remains largely unknown. The present study aimed to determine the effects of ORES on osteosarcoma cell Saos-2. Cell Counting Kit-8 assay was performed to detect Soas-2 cell viability. Annexin-FITC/PI staining and JC-1 staining were used to measure cell apoptosis and the change of mitochondrial membrane potential. In addition, western blotting was conducted to determine the expression levels of apoptotic proteins and the phosphorylation of STAT3. It was found that ORES inhibited cell viability and induced apoptosis of osteosarcoma Saos-2 cells in a concentration-dependent manner. In addition, ORES increased the expression levels of apoptotic proteases caspase-9 and caspase-3 and reduced mitochondrial membrane potential. In response to ORES treatment, the expression levels of pro-apoptotic proteins, Bad and Bax, were enhanced, whereas those of anti-apoptotic proteins, Bcl-2 and Bcl-xL, were reduced. In addition, the phosphorylation of STAT3 was attenuated in Saos-2 cells after treatment with ORES. Inhibition of cell viability and apoptosis induction by ORES were rescued by enhancement of STAT3 activation upon treatment with IL-6. Collectively, the present study indicated that ORES induced apoptosis and inhibited cell viability, which may be associated with the inhibition of STAT3 activation; thus, ORES represents a promising agent for treating osteosarcoma.
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Affiliation(s)
- Tao Lv
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
| | - Zhen Jian
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
| | - Dejian Li
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
| | - Rongguang Ao
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
| | - Xu Zhang
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
| | - Baoqing Yu
- Department of Orthopedics, Shanghai Pudong Hospital, Fudan University Pudong Medical Center, Shanghai 201399, P.R. China
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11
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Yeom J, Ma S, Lim YH. Oxyresveratrol Induces Autophagy via the ER Stress Signaling Pathway, and Oxyresveratrol-Induced Autophagy Stimulates MUC2 Synthesis in Human Goblet Cells. Antioxidants (Basel) 2020; 9:antiox9030214. [PMID: 32150901 PMCID: PMC7139292 DOI: 10.3390/antiox9030214] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 02/07/2023] Open
Abstract
Background: Autophagy is a cell protection system invoked to eliminate the damaged organelles and misfolded proteins that induce various stresses, including endoplasmic reticulum (ER) stress. Autophagy can control mucin secretion in goblet cells. Oxyresveratrol (OXY), an antioxidant, stimulates expression of MUC2. Thus, we investigated the effect of OXY on autophagy and found that OXY-induced autophagy stimulates MUC2 expression in human intestinal goblet cells. Methods: Autophagy-related genes and proteins were examined by quantitative real-time PCR (qPCR) and Western blotting, respectively. Autophagy was assessed by immunocytochemistry (ICC). To analyze the protein expression profiles of OXY-treated LS 174T goblet cells, two-dimensional electrophoresis (2DE) and peptide mass fingerprinting (PMF) were performed. MUC2 expression in cells was evaluated by ICC. Results: OXY significantly increased the expression levels of genes related to autophagy induction, and activated phagosome elongation resulted in the formation of autophagosomes. OXY also activated the ER stress signaling pathway and promoted MUC2 synthesis, which was inhibited by treatment with an autophagy inhibitor. Conclusion: OXY induces autophagy via the ER stress signaling pathway, and OXY-induced autophagy increases MUC2 production in intestinal goblet cells.
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Affiliation(s)
- Jiah Yeom
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 02841, Korea; (J.Y.); (S.M.)
| | - Seongho Ma
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 02841, Korea; (J.Y.); (S.M.)
| | - Young-Hee Lim
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 02841, Korea; (J.Y.); (S.M.)
- Department of Public Health Sciences (Brain Korea 21 PLUS program), Graduate School, Korea University, Seoul 02841, Korea
- Department of Laboratory Medicine, Korea University Guro Hospital, Seoul 08308, Korea
- Correspondence: ; Tel.: +82-2-3290-5635
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12
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Li L, Wang Y, Guo R, Li S, Ni J, Gao S, Gao X, Mao J, Zhu Y, Wu P, Wang H, Kong D, Zhang H, Zhu M, Fan G. Ginsenoside Rg3-loaded, reactive oxygen species-responsive polymeric nanoparticles for alleviating myocardial ischemia-reperfusion injury. J Control Release 2019; 317:259-272. [PMID: 31783047 DOI: 10.1016/j.jconrel.2019.11.032] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Revised: 11/25/2019] [Accepted: 11/26/2019] [Indexed: 01/07/2023]
Abstract
Myocardial ischemia-reperfusion injury (MIRI) is a serious threat to the health and lives of patients without any effective therapy. Excessive production of reactive oxygen species (ROS) is considered a principal cause of MIRI. Some natural products, including ginsenoside Rg3 (Rg3), exhibit robust antioxidant activity. However, the lack of an effective delivery strategy for this hydrophobic compound hinders its clinical application. In addition, therapeutic targets and molecular mechanisms of Rg3 require further elucidation to establish its mode of action. This study aimed to generate ROS-responsive nanoparticles (PEG-b-PPS) via the self-assembly of diblock copolymers of poly (ethylene glycol) (PEG) and poly (propylene sulfide) (PPS) and use them for Rg3 encapsulation and delivery. We identified FoxO3a as the therapeutic target of Rg3 using molecular docking and gene silencing. In rat ischemia-reperfusion model, an intramyocardial injection of Rg3-loaded PEG-b-PPS nanoparticles improved the cardiac function and reduced the infarct size. The mechanism of action was established as Rg3 targeting of FoxO3a, which inhibited the promotion of oxidative stress, inflammation, and fibrosis via downstream signaling pathways. In conclusion, this approach, involving ROS-responsive drug release, together with the identification of the target and mechanism of action of Rg3, provided an effective strategy for treating ischemic diseases and oxidative stress and could accelerate the implementation of hydrophobic natural products in clinical applications.
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Affiliation(s)
- Lan Li
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China; Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Yili Wang
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China; Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Rui Guo
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China; Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Sheng Li
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China; Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Jingyu Ni
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China; Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Shan Gao
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China; Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Xiumei Gao
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Jingyuan Mao
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China
| | - Yan Zhu
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China
| | - Pingli Wu
- College of Life Sciences, Key Laboratory of Bioactive Materials (Ministry of Education), State Key Laboratory of Medicinal Chemical Biology, Xu Rongxiang Regeneration Life Science Center, Nankai University, Tianjin 300071, China
| | - Hongjun Wang
- Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA
| | - Deling Kong
- College of Life Sciences, Key Laboratory of Bioactive Materials (Ministry of Education), State Key Laboratory of Medicinal Chemical Biology, Xu Rongxiang Regeneration Life Science Center, Nankai University, Tianjin 300071, China
| | - Han Zhang
- Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
| | - Meifeng Zhu
- College of Life Sciences, Key Laboratory of Bioactive Materials (Ministry of Education), State Key Laboratory of Medicinal Chemical Biology, Xu Rongxiang Regeneration Life Science Center, Nankai University, Tianjin 300071, China; Department of Biomedical Engineering, Stevens Institute of Technology, Hoboken, NJ 07030, USA.
| | - Guanwei Fan
- First Teaching Hospital of Tianjin University of Traditional Chinese Medicine, Tianjin 300193, China; Tianjin Key Laboratory of Translational Research of TCM Prescription and Syndrome, Tianjin University of Traditional Chinese Medicine, Tianjin 301617, China.
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13
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Liu H, He S, Wang T, Orang-Ojong B, Lu Q, Zhang Z, Pan L, Chai X, Wu H, Fan G, Zhang P, Feng Y, Song YS, Gao X, Karas RH, Zhu Y. Selected Phytoestrogens Distinguish Roles of ERα Transactivation and Ligand Binding for Anti-Inflammatory Activity. Endocrinology 2018; 159:3351-3364. [PMID: 30010822 DOI: 10.1210/en.2018-00275] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2018] [Accepted: 07/05/2018] [Indexed: 11/19/2022]
Abstract
Estrogen receptor α (ERα) is a ligand-activated transcriptional activator that is also involved vascular inflammation and atherosclerosis. Whether different ligands may affect this activity has not been explored. We screened a panel of phytoestrogens for their role in ERα binding and transcriptional transcription, and correlated the findings to anti-inflammatory activities in vascular endothelial cells stably expressing either a wild-type or mutant form of ERα deficient in its membrane association. Taxifolin and silymarin were "high binders" for ERα ligand binding; quercetin and curcumin were "high activators" for ERα transactivation. Using these phytoestrogens as functional probes, we found, in endothelial cells expressing wild-type ERα, the ERα high activator, but not the ERα high binder, promoted ERα nuclear translocation, estrogen response element (ERE) reporter activity, and the downstream gene expression. In endothelial cells expressing membrane association-deficient mutant ERα, the ERα nuclear translocation was significantly enhanced by taxifolin and silymarin, which still failed to activate ERα. Inflammation response was examined using the systemic or vascular inflammation inducers lipopolysaccharide or oxidized low-density lipoprotein. In both cases, only the ERα high activator inhibited nuclear translocation of nuclear factor κB, JNK, and p38, and the production of inflammatory cytokines IL-1β and TNFα. We confirm a threshold nuclear accumulation of ERα is necessary for its transactivation. The anti-inflammatory activity of phytoestrogens is highly dependent on ERα transactivation, less so on the ligand binding, and independent of its membrane association. A pre-examination of phytoestrogens for their mode of ERα interaction could facilitate their development as better targeted receptor modifiers.
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Affiliation(s)
- Haixin Liu
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Shuang He
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Taiyi Wang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Barnabas Orang-Ojong
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Qing Lu
- Molecular Cardiology Research Institute, Tufts Medical Center and Tufts University School of Medicine, Boston, Massachusetts
| | - Zhongqun Zhang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Lanlan Pan
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Xin Chai
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Honghua Wu
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Guanwei Fan
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Peng Zhang
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Yuxin Feng
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
| | - Yun Seon Song
- College of Pharmacy, Sookmyung Women's University, Seoul, Korea
| | - Xuimei Gao
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
| | - Richard H Karas
- Molecular Cardiology Research Institute, Tufts Medical Center and Tufts University School of Medicine, Boston, Massachusetts
| | - Yan Zhu
- Tianjin State Key Laboratory of Modern Chinese Medicine, Tianjin University of Traditional Chinese Medicine, Tianjin, China
- Research and Development Center of Traditional Chinese Medicine, Tianjin International Joint Academy of Biotechnology & Medicine, Tianjin, China
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14
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Hwang D, Jo H, Ma SH, Lim YH. Oxyresveratrol stimulates mucin production in an NAD +-dependent manner in human intestinal goblet cells. Food Chem Toxicol 2018; 118:880-888. [PMID: 29935245 DOI: 10.1016/j.fct.2018.06.039] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 06/16/2018] [Accepted: 06/19/2018] [Indexed: 02/06/2023]
Abstract
The intestinal mucus layer plays an important role in the management of inflammatory bowel disease. The aim of this study was to investigate the effects of oxyresveratrol (OXY), an antioxidant, on the stimulation of mucin production in human LS 174T goblet cells and the underlying mechanism thereof. OXY increased MUC2 expression at both the mRNA and protein levels. By performing two-dimensional gel electrophoresis, we found that the expression of nicotinic acid phosphoribosyltransferase1 (NaPRT1) in OXY-treated LS 174T cells was greatly increased compared with that in negative control cells. In addition, the NAD+/NADH ratio was increased in proportion to OXY in LS 174T cells. The expression of NAD+-synthesis enzymes, NaPRT1, nicotinamide riboside kinase1 (NRK1) and nicotinamide mononucleotide adenylyltransferase1 (Nmnat1) was significantly increased at both the mRNA and protein levels in OXY-treated LS 174T cells. The inhibition of NaPRT1 and NRK1 did not decrease MUC2 expression after inhibiting by small interfering RNA (siRNA)-NaPRT1 and siRNA-NRK1, respectively; however, inhibition of Nmnat by an Nmnat inhibitor decreased MUC2 expression in a dose-dependent manner. In conclusion, OXY increases NAD+ levels, resulting in the stimulation of MUC2 expression in LS 174T cells. These findings present a novel role for NAD+ in stimulation of MUC2 expression.
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Affiliation(s)
- Dahyun Hwang
- Department of Biomedical Laboratory Science, College of Life and Health Sciences, Hoseo University, Asan, 31499, Republic of Korea
| | - HyunA Jo
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, 02841, Republic of Korea
| | - Seong-Ho Ma
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, 02841, Republic of Korea
| | - Young-Hee Lim
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul, 02841, Republic of Korea; Department of Public Health Science (BK21 PLUS Program), Graduate School, Korea University, Seoul, 02841, Republic of Korea; Department of Laboratory Medicine, Korea University Guro Hospital, Seoul, 08308, Republic of Korea.
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15
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Anti-Inflammatory Effect of Lupinalbin A Isolated from Apios americana on Lipopolysaccharide-Treated RAW264.7 Cells. Molecules 2018; 23:molecules23030583. [PMID: 29509670 PMCID: PMC6017804 DOI: 10.3390/molecules23030583] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2018] [Revised: 02/28/2018] [Accepted: 03/01/2018] [Indexed: 12/02/2022] Open
Abstract
Apios americana, a leguminous plant, is used as food in some countries. Although the biological activities of Apios extract have been reported, there have been no reports about the anti-inflammatory mechanism of lupinalbin A on the RAW264.7 cells. In this study, we investigated the anti-inflammatory effect of A. americana lupinalbin A on lipopolysaccharide (LPS)-treated RAW264.7 cells. Lupinalbin A significantly inhibited nitric oxide production and inducible nitric oxide synthase expression in LPS-treated RAW264.7 cells. The expression of cytokines, including interleukin-6, tumor necrosis factor-α, and chemokine of monocyte chemoattractant protein, was reduced under lupinalbin A exposure in LPS-treated RAW264.7 cells. In addition, lupinalbin A significantly decreased LPS-induced interferon (IFN)-β production and STAT1 protein levels in RAW264.7 cells. Taken together, these results suggest that A. americana lupinalbin A exerts anti-inflammatory effects via the inhibition of pro-inflammatory cytokines and blocking of IFN-β/STAT1 pathway activation.
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16
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Jo H, Hwang D, Kim JK, Lim YH. Oxyresveratrol improves tight junction integrity through the PKC and MAPK signaling pathways in Caco-2 cells. Food Chem Toxicol 2017; 108:203-213. [PMID: 28780155 DOI: 10.1016/j.fct.2017.08.002] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2017] [Revised: 07/14/2017] [Accepted: 08/01/2017] [Indexed: 12/18/2022]
Abstract
Strengthening intestinal tight junctions (TJ) provides an effective barrier from the external environment and is important for recovery from inflammatory bowel disease. Oxyresveratrol (OXY), an isomer of hydroxylated resveratrol, is isolated from many plants. The aim of this study was to investigate the effect of OXY on intestinal TJ and to elucidate the mechanism underlying the OXY-mediated increase in TJ integrity in human intestinal Caco-2 cells. OXY-treated Caco-2 cell monolayers showed decreased monolayer permeability as evaluated by paracellular transport assay. The results showed that OXY significantly increased the levels of TJ-related genes and proteins (Claudin-1, Occludin and ZO-1) compared with those of the negative control. OXY activated protein kinase C (PKC) and increased expression levels of mitogen-activated protein kinase (MAPK) genes. OXY also increased gene and protein levels of the transcription factor Cdx-2. Expression levels of TJ, PKC and Cdx-2 proteins and transepithelial electrical resistance (TEER) value decreased in OXY-treated Caco-2 cells following treatment with a pan-PKC inhibitor compared with those of the untreated control. In conclusion, OXY strengthens the integrity of the intestinal TJ barrier via activation of the PKC and MAPK pathways.
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Affiliation(s)
- HyunA Jo
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 136-701, Republic of Korea
| | - Dahyun Hwang
- Department of Biomedical Laboratory Science, College of Life and Health Sciences, Hoseo University, Asan 31499, Republic of Korea
| | - Jeong-Keun Kim
- Department of Chemical Engineering and Biotechnology, Korea Polytechnic University, Shihung-si, Gyeonggi-do 429-793, Republic of Korea
| | - Young-Hee Lim
- Department of Integrated Biomedical and Life Sciences, Graduate School, Korea University, Seoul 136-701, Republic of Korea; Department of Public Health Science (Brain Korea 21 PLUS Program), Graduate School, Korea University, Seoul 136-701, Republic of Korea; Department of Laboratory Medicine, Korea University Guro Hospital, Seoul 152-703, Republic of Korea.
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