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Ikeda T, Katoh Y, Hino H, Seta D, Ogawa T, Iwata T, Nishio H, Sugawara M, Hirai S. FADS2 confers SCD1 inhibition resistance to cancer cells by modulating the ER stress response. Sci Rep 2024; 14:13116. [PMID: 38849435 PMCID: PMC11161504 DOI: 10.1038/s41598-024-64043-2] [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: 04/05/2024] [Accepted: 06/04/2024] [Indexed: 06/09/2024] Open
Abstract
Stearoyl-CoA desaturase 1 (SCD1) is an attractive target for cancer therapy. However, the clinical efficacy of SCD1 inhibitor monotherapy is limited. There is thus a need to elucidate the mechanisms of resistance to SCD1 inhibition and develop new therapeutic strategies for combination therapy. In this study, we investigated the molecular mechanisms by which cancer cells acquire resistance to endoplasmic reticulum (ER) stress-dependent cancer cell death induced by SCD1 inhibition. SCD1 inhibitor-sensitive and -resistant cancer cells were treated with SCD1 inhibitors in vitro, and SCD1 inhibitor-sensitive cancer cells accumulated palmitic acid and underwent ER stress response-induced cell death. Conversely, SCD1-resistant cancer cells did not undergo ER stress response-induced cell death because fatty acid desaturase 2 (FADS2) eliminated the accumulation of palmitic acid. Furthermore, genetic depletion using siRNA showed that FADS2 is a key determinant of sensitivity/resistance of cancer cells to SCD1 inhibitor. A549 cells, an SCD1 inhibitor-resistant cancer cell line, underwent ER stress-dependent cancer cell death upon dual inhibition of SCD1 and FADS2. Thus, combination therapy with SCD1 inhibition and FADS2 inhibition is potentially a new cancer therapeutic strategy targeting fatty acid metabolism.
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Affiliation(s)
- Toshikatsu Ikeda
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Ohyaguchi-Kami-Cho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Yuki Katoh
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Ohyaguchi-Kami-Cho, Itabashi-ku, Tokyo, 173-8610, Japan.
- Department of Obstetrics and Gynecology, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan.
| | - Hirotsugu Hino
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Ohyaguchi-Kami-Cho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Daichi Seta
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Ohyaguchi-Kami-Cho, Itabashi-ku, Tokyo, 173-8610, Japan
| | - Tadashi Ogawa
- Department of Legal Medicine, Aichi Medical University School of Medicine, 1-1 Yazakokarimata, Nagakute, Aichi, 480-1195, Japan
| | - Takashi Iwata
- Department of Obstetrics and Gynecology, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Hiroshi Nishio
- Department of Obstetrics and Gynecology, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Masaki Sugawara
- Department of Obstetrics and Gynecology, Keio University School of Medicine, 35 Shinano-machi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Shuichi Hirai
- Division of Anatomical Science, Department of Functional Morphology, Nihon University School of Medicine, 30-1 Ohyaguchi-Kami-Cho, Itabashi-ku, Tokyo, 173-8610, Japan
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2
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Li C, Xu Y, Zhang J, Zhang Y, He W, Ju J, Wu Y, Wang Y. The effect of resveratrol, curcumin and quercetin combination on immuno-suppression of tumor microenvironment for breast tumor-bearing mice. Sci Rep 2023; 13:13278. [PMID: 37587146 PMCID: PMC10432483 DOI: 10.1038/s41598-023-39279-z] [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: 02/27/2023] [Accepted: 07/22/2023] [Indexed: 08/18/2023] Open
Abstract
Resveratrol, curcumin, and quercetin are the secondary metabolites from medicinal food homology plants, that have been proven their potency in cancer treatment. However, the antitumor effect of a single component is weak. So, herein, we designed an antitumor compound named RCQ composed of resveratrol, curcumin, and quercetin. This study examined the effect on tumorigenesis and development of 4T1 breast cancer-bearing mice following administering RCQ by intragastric administration. RCQ increased the recruitment of T cells and reduced the accumulation of neutrophils and macrophages in the tumor microenvironment. Meanwhile, RCQ suppressed the development of tumor-infiltrating lymphocytes into immunosuppressive cell subpopulations, including CD4+ T cells to T helper Type 2 type (Th2), tumor-associated neutrophils (TANs) to the N2 TANs, and tumor-associated macrophages (TAMs) cells to M2 TAMs. RCQ reversed the predominance of immunosuppressive infiltrating cells in the tumor microenvironment and tipped the immune balance toward an immune activation state. In vitro the study showed that RCQ significantly increased reactive oxygen species (ROS), reduce mitochondrial membrane potentials in cancer cells, and modulate pro-apoptotic Bcl-2 family members. In conclusion, RCQ can promote the ROS apoptosis mechanism of tumor cells and alleviate immunosuppression of the tumor microenvironment to enhance the anti-tumor effect.
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Affiliation(s)
- Chenchen Li
- School of Medicine and School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, International Associated Research Center for Intelligent Human Computer Collaboration on Tumor Precision Medicine, School of Pharmacy and The First Affiliated Hospital, Hainan Medical University, Haikou, 571199, Hainan, China
| | - Yajun Xu
- School of Medicine and School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Junfeng Zhang
- School of Medicine and School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Yuxi Zhang
- School of Medicine and School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Wen He
- School of Medicine and School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Jiale Ju
- School of Medicine and School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Yinghua Wu
- School of Medicine and School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China
| | - Yanli Wang
- School of Medicine and School of Environmental and Chemical Engineering, Shanghai University, Shanghai, 200444, People's Republic of China.
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3
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Martelli A, Omrani M, Zarghooni M, Citi V, Brogi S, Calderone V, Sureda A, Lorzadeh S, da Silva Rosa SC, Grabarek BO, Staszkiewicz R, Los MJ, Nabavi SF, Nabavi SM, Mehrbod P, Klionsky DJ, Ghavami S. New Visions on Natural Products and Cancer Therapy: Autophagy and Related Regulatory Pathways. Cancers (Basel) 2022; 14:5839. [PMID: 36497321 PMCID: PMC9738256 DOI: 10.3390/cancers14235839] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2022] [Revised: 11/06/2022] [Accepted: 11/15/2022] [Indexed: 11/29/2022] Open
Abstract
Macroautophagy (autophagy) has been a highly conserved process throughout evolution and allows cells to degrade aggregated/misfolded proteins, dysfunctional or superfluous organelles and damaged macromolecules, in order to recycle them for biosynthetic and/or energetic purposes to preserve cellular homeostasis and health. Changes in autophagy are indeed correlated with several pathological disorders such as neurodegenerative and cardiovascular diseases, infections, cancer and inflammatory diseases. Conversely, autophagy controls both apoptosis and the unfolded protein response (UPR) in the cells. Therefore, any changes in the autophagy pathway will affect both the UPR and apoptosis. Recent evidence has shown that several natural products can modulate (induce or inhibit) the autophagy pathway. Natural products may target different regulatory components of the autophagy pathway, including specific kinases or phosphatases. In this review, we evaluated ~100 natural compounds and plant species and their impact on different types of cancers via the autophagy pathway. We also discuss the impact of these compounds on the UPR and apoptosis via the autophagy pathway. A multitude of preclinical findings have shown the function of botanicals in regulating cell autophagy and its potential impact on cancer therapy; however, the number of related clinical trials to date remains low. In this regard, further pre-clinical and clinical studies are warranted to better clarify the utility of natural compounds and their modulatory effects on autophagy, as fine-tuning of autophagy could be translated into therapeutic applications for several cancers.
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Affiliation(s)
- Alma Martelli
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Marzieh Omrani
- Department of Phytochemistry, Medicinal Plants and Drugs Research Institute, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Maryam Zarghooni
- Department of Laboratory Medicine & Pathobiology, University of Toronto Alumna, Toronto, ON M5S 3J3, Canada
| | - Valentina Citi
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Simone Brogi
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Vincenzo Calderone
- Department of Pharmacy, University of Pisa, Via Bonanno 6, 56126 Pisa, Italy
| | - Antoni Sureda
- Research Group in Community Nutrition, Oxidative Stress and Health Research Institute of the Balearic Islands (IdISBa), University of Balearic Islands, 07122 Palma de Mallorca, Spain
- CIBER Physiopathology of Obesity and Nutrition (CIBEROBN), Instituto de Salud Carlos III (ISCIII), 28029 Madrid, Spain
| | - Shahrokh Lorzadeh
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Simone C. da Silva Rosa
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
| | - Beniamin Oscar Grabarek
- Department of Histology, Cytophysiology and Embryology, Faculty of Medicine in Zabrze, Academy of Silesia, 41-800 Zabrze, Poland
- Department of Gynaecology and Obstetrics, Faculty of Medicine in Zabrze, Academy of Silesia, 41-800 Zabrze, Poland
- GynCentrum, Laboratory of Molecular Biology and Virology, 40-851 Katowice, Poland
| | - Rafał Staszkiewicz
- Department of Histology, Cytophysiology and Embryology, Faculty of Medicine in Zabrze, Academy of Silesia, 41-800 Zabrze, Poland
- Department of Neurosurgery, 5th Military Clinical Hospital with the SP ZOZ Polyclinic in Krakow, 30-901 Krakow, Poland
| | - Marek J. Los
- Biotechnology Centre, Silesian University of Technology, 44-100 Gliwice, Poland
| | - Seyed Fazel Nabavi
- Nutringredientes Research Center, Federal Institute of Education, Science and Technology (IFCE), Baturite 62760-000, Brazil
| | - Seyed Mohammad Nabavi
- Advanced Medical Pharma (AMP-Biotec), Biopharmaceutical Innovation Centre, Via Cortenocera, 82030 San Salvatore Telesino, Italy
| | - Parvaneh Mehrbod
- Influenza and Respiratory Viruses Department, Pasteur Institute of Iran, Tehran 1316943551, Iran
| | - Daniel J. Klionsky
- Life Sciences Institute, University of Michigan, Ann Arbor, MI 48109, USA
| | - Saeid Ghavami
- Department of Human Anatomy and Cell Science, Max Rady College of Medicine, Rady Faculty of Health Sciences, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
- Faculty of Medicine in Zabrze, Academia of Silesia, 41-800 Zabrze, Poland
- Research Institute of Oncology and Hematology, Cancer Care Manitoba, University of Manitoba, Winnipeg, MB R3T 2N2, Canada
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4
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Roshani M, Jafari A, Loghman A, Sheida AH, Taghavi T, Tamehri Zadeh SS, Hamblin MR, Homayounfal M, Mirzaei H. Applications of resveratrol in the treatment of gastrointestinal cancer. Biomed Pharmacother 2022; 153:113274. [PMID: 35724505 DOI: 10.1016/j.biopha.2022.113274] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/28/2022] [Accepted: 06/08/2022] [Indexed: 12/15/2022] Open
Abstract
Natural product compounds have lately attracted interest in the scientific community as a possible treatment for gastrointestinal (GI) cancer, due to their anti-inflammatory and anticancer properties. There are many preclinical, clinical, and epidemiological studies, suggesting that the consumption of polyphenol compounds, which are abundant in vegetables, grains, fruits, and pulses, may help to prevent various illnesses and disorders from developing, including several GI cancers. The development of GI malignancies follows a well-known path, in which normal gastrointestinal cells acquire abnormalities in their genetic composition, causing the cells to continuously proliferate, and metastasize to other sites, especially the brain and liver. Natural compounds with the ability to affect oncogenic pathways might be possible treatments for GI malignancies, and could easily be tested in clinical trials. Resveratrol is a non-flavonoid polyphenol and a natural stilbene, acting as a phytoestrogen with anti-cancer, cardioprotective, anti-oxidant, and anti-inflammatory properties. Resveratrol has been shown to overcome resistance mechanisms in cancer cells, and when combined with conventional anticancer drugs, could sensitize cancer cells to chemotherapy. Several new resveratrol analogs and nanostructured delivery vehicles with improved anti-GI cancer efficacy, absorption, and pharmacokinetic profiles have already been developed. This present review focuses on the in vitro and in vivo effects of resveratrol on GI cancers, as well as the underlying molecular mechanisms of action.
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Affiliation(s)
- Mohammad Roshani
- Internal Medicine and Gastroenterology, Colorectal Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Ameneh Jafari
- Advanced Therapy Medicinal Product (ATMP) Department, Breast Cancer Research Center, Motamed Cancer Institute, ACECR, Tehran, Iran; Proteomics Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | | | - Amir Hossein Sheida
- School of Medicine, Kashan University of Medical Sciences, Kashan, Iran; Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | | | | | - Michael R Hamblin
- Laser Research Centre, Faculty of Health Science, University of Johannesburg, Doornfontein 2028, South Africa
| | - Mina Homayounfal
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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5
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Zhang J, Tong CF, Wan J, Wang YG. Xuezhikang alleviates lipid accumulation via AMPK activation in hepatocellular steatosis model. BRAZ J PHARM SCI 2022. [DOI: 10.1590/s2175-97902022e19902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Jie Zhang
- Zhongnan Hospital of Wuhan University, China
| | | | - Jing Wan
- Zhongnan Hospital of Wuhan University, China
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6
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Pandey S, Sharma VK, Biswas A, Lahiri M, Basu S. Small molecule-mediated induction of endoplasmic reticulum stress in cancer cells. RSC Med Chem 2021; 12:1604-1611. [PMID: 34671742 PMCID: PMC8459384 DOI: 10.1039/d1md00095k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 07/15/2021] [Indexed: 11/21/2022] Open
Abstract
The endoplasmic reticulum (ER) is one of the crucial sub-cellular organelles controlling myriads of functions including protein biosynthesis, folding, misfolding and unfolding. As a result, dysregulation of these pathways in the ER is implicated in cancer development and progression. Subsequently, targeting the ER in cancer cells emerged as an interesting unorthodox strategy in next-generation anticancer therapy. However, development of small molecules to selectively target the ER for cancer therapy remained elusive and unexplored. To address this, herein, we have developed a novel small molecule library of sulfonylhydrazide-hydrazones through a short and concise chemical synthetic strategy. We identified a fluorescent small molecule that localized into the endoplasmic reticulum (ER) of HeLa cells, induced ER stress followed by triggering autophagy which was subsequently inhibited by chloroquine (autophagy inhibitor) to initiate apoptosis. This small molecule showed remarkable cancer cell killing efficacy in different cancer cells as mono and combination therapy with chloroquine, thus opening a new direction to illuminate ER-biology towards the development of novel anticancer therapeutics.
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Affiliation(s)
- Shalini Pandey
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune Homi Bhabha Road, Pashan Pune 411008 India
- Discipline of Chemistry, Indian Institute of Technology (IIT) Gandhinagar Palaj Gandhinagar Gujarat 382355 India
| | - Virender Kumar Sharma
- Department of Biology, Indian Institute of Science Education and Research (IISER)-Pune Homi Bhabha Road, Pashan Pune 411008 India
| | - Ankur Biswas
- Department of Chemistry, Indian Institute of Science Education and Research (IISER)-Pune Homi Bhabha Road, Pashan Pune 411008 India
| | - Mayurika Lahiri
- Department of Biology, Indian Institute of Science Education and Research (IISER)-Pune Homi Bhabha Road, Pashan Pune 411008 India
| | - Sudipta Basu
- Discipline of Chemistry, Indian Institute of Technology (IIT) Gandhinagar Palaj Gandhinagar Gujarat 382355 India
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7
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Flessa CM, Kyrou I, Nasiri-Ansari N, Kaltsas G, Papavassiliou AG, Kassi E, Randeva HS. Endoplasmic Reticulum Stress and Autophagy in the Pathogenesis of Non-alcoholic Fatty Liver Disease (NAFLD): Current Evidence and Perspectives. Curr Obes Rep 2021; 10:134-161. [PMID: 33751456 DOI: 10.1007/s13679-021-00431-3] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 02/23/2021] [Indexed: 02/06/2023]
Abstract
PURPOSE OF REVIEW Non-alcoholic fatty liver disease (NAFLD) is one of the most common causes of chronic liver disease with rising prevalence worldwide. Herein, we provide a comprehensive overview of the current knowledge supporting the role of ER stress and autophagy processes in NAFLD pathogenesis and progression. We also highlight the interrelation between these two pathways and the impact of ER stress and autophagy modulators on NAFLD treatment. RECENT FINDINGS The pathophysiological mechanisms involved in NAFLD progression are currently under investigation. The endoplasmic reticulum (ER) stress and the concomitant unfolded protein response (UPR) seem to contribute to its pathogenesis mainly due to high ER content in the liver which exerts significant metabolic functions and can be dysregulated. Furthermore, disruption of autophagy processes has also been identified in NAFLD. The crucial role of these two pathways in NAFLD is underlined by the fact that they have recently emerged as promising targets of therapeutic interventions. There is a greater need for finding the natural/chemical compounds and drugs which can modulate the ER stress pathway and autophagy for the treatment of NAFLD. Clarifying the inter-relation between these two pathways and their interaction with inflammatory and apoptotic mechanisms will allow the development of additional therapeutic options which can better target and reprogram the underlying pathophysiological pathways, aiming to attenuate NAFLD progression.
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Affiliation(s)
- Christina-Maria Flessa
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism (WISDEM), University Hospitals Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, UK
| | - Ioannis Kyrou
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism (WISDEM), University Hospitals Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, UK
- Aston Medical Research Institute, Aston Medical School, College of Health and Life Sciences, Aston University, B4 7ET, Birmingham, UK
- Division of Translational and Experimental Medicine, Metabolic and Vascular Health, Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK
| | - Narjes Nasiri-Ansari
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | - Gregory Kaltsas
- Endocrine Unit, 1st Department of Propaedeutic and Internal Medicine, Laiko Hospital, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | - Athanasios G Papavassiliou
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | - Eva Kassi
- Department of Biological Chemistry, Medical School, National and Kapodistrian University of Athens, 11527, Athens, Greece.
- Endocrine Unit, 1st Department of Propaedeutic and Internal Medicine, Laiko Hospital, National and Kapodistrian University of Athens, 11527, Athens, Greece.
| | - Harpal S Randeva
- Warwickshire Institute for the Study of Diabetes, Endocrinology and Metabolism (WISDEM), University Hospitals Coventry and Warwickshire NHS Trust, Coventry, CV2 2DX, UK.
- Division of Translational and Experimental Medicine, Metabolic and Vascular Health, Warwick Medical School, University of Warwick, Coventry, CV4 7AL, UK.
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8
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Stable Isotope Tracing Metabolomics to Investigate the Metabolic Activity of Bioactive Compounds for Cancer Prevention and Treatment. Cancers (Basel) 2020; 12:cancers12082147. [PMID: 32756373 PMCID: PMC7463803 DOI: 10.3390/cancers12082147] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Revised: 07/29/2020] [Accepted: 07/30/2020] [Indexed: 12/11/2022] Open
Abstract
A major hallmark of cancer is the metabolic reprogramming of cancer cells to fuel tumor growth and proliferation. Various plant-derived bioactive compounds efficiently target the metabolic vulnerabilities of cancer cells and exhibit potential as emerging therapeutic agents. Due to their safety and common use as dietary components, they are also ideal for cancer prevention. However, to render their use as efficient as possible, the mechanism of action of these phytochemicals needs to be well characterized. Stable isotope tracing is an essential technology to study the molecular mechanisms by which nutraceuticals modulate and target cancer metabolism. The use of positionally labeled tracers as exogenous nutrients and the monitoring of their downstream metabolites labeling patterns enable the analysis of the specific metabolic pathway activity, via the relative production and consumption of the labeled metabolites. Although stable isotope tracing metabolomics is a powerful tool to investigate the molecular activity of bioactive compounds as well as to design synergistic nutraceutical combinations, this methodology is still underutilized. This review aims to investigate the research efforts and potentials surrounding the use of stable isotope tracing metabolomics to examine the metabolic alterations mediated by bioactive compounds in cancer.
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9
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Galmés-Pascual BM, Martínez-Cignoni MR, Morán-Costoya A, Bauza-Thorbrügge M, Sbert-Roig M, Valle A, Proenza AM, Lladó I, Gianotti M. 17β-estradiol ameliorates lipotoxicity-induced hepatic mitochondrial oxidative stress and insulin resistance. Free Radic Biol Med 2020; 150:148-160. [PMID: 32105829 DOI: 10.1016/j.freeradbiomed.2020.02.016] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Revised: 02/11/2020] [Accepted: 02/19/2020] [Indexed: 02/08/2023]
Abstract
The prevalence and severity of nonalcoholic fatty liver disease (NAFLD) is higher in men and postmenopausal women compared to premenopausal women, suggesting a protective role for ovarian hormones. Diet-induced obesity and fatty acids surplus promote mitochondrial dysfunction in liver, triggering oxidative stress and activation of c-Jun N-terminal kinase (JNK) which has been related to the development of insulin resistance and steatosis, the main hallmarks of NAFLD. Considering that estrogen, in particular 17β-estradiol (E2), have been reported to improve mitochondrial biogenesis and function in liver, our aim was to elucidate the role of E2 in preventing fatty acid-induced insulin resistance in hepatocytes through modulation of mitochondrial function, oxidative stress and JNK activation. An in vivo study was conducted in Wistar rats of both sexes (n = 7) fed control diet and high-fat diet (HFD), and in vitro studies were carried out in HepG2 cells treated with palmitate (PA) and E2 for 24 h. Our HFD-fed male rats showed a prediabetic state characterized by greater systemic and hepatic insulin resistance, as well as higher lipid content in liver, compared to females. JNK activation rose markedly in males in response to HFD feeding, in parallel with mitochondrial dysfunction and oxidative stress. Consistently, in PA-exposed HepG2 cells, E2 treatment prevented JNK activation, insulin resistance and fatty acid accumulation. Altogether, our data highlights the importance of E2 as a mitigating factor of fatty acid-insulin resistance in hepatocytes through downregulation of JNK activation, by means of mitochondrial function improvement.
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Affiliation(s)
- Bel M Galmés-Pascual
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7.5, E-07122, Palma de Mallorca, Illes Balears, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), Hospital Universitari Son Espases, E-07120, Palma de Mallorca, Illes Balears, Spain
| | - Melanie Raquel Martínez-Cignoni
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7.5, E-07122, Palma de Mallorca, Illes Balears, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), Hospital Universitari Son Espases, E-07120, Palma de Mallorca, Illes Balears, Spain
| | - Andrea Morán-Costoya
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7.5, E-07122, Palma de Mallorca, Illes Balears, Spain
| | - Marco Bauza-Thorbrügge
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7.5, E-07122, Palma de Mallorca, Illes Balears, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), Hospital Universitari Son Espases, E-07120, Palma de Mallorca, Illes Balears, Spain
| | - Miquel Sbert-Roig
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7.5, E-07122, Palma de Mallorca, Illes Balears, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), Hospital Universitari Son Espases, E-07120, Palma de Mallorca, Illes Balears, Spain
| | - Adamo Valle
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7.5, E-07122, Palma de Mallorca, Illes Balears, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), Hospital Universitari Son Espases, E-07120, Palma de Mallorca, Illes Balears, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn, CB06/03/0043), Instituto de Salud Carlos III, E- 28029, Madrid, Spain.
| | - Ana M Proenza
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7.5, E-07122, Palma de Mallorca, Illes Balears, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), Hospital Universitari Son Espases, E-07120, Palma de Mallorca, Illes Balears, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn, CB06/03/0043), Instituto de Salud Carlos III, E- 28029, Madrid, Spain
| | - Isabel Lladó
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7.5, E-07122, Palma de Mallorca, Illes Balears, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), Hospital Universitari Son Espases, E-07120, Palma de Mallorca, Illes Balears, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn, CB06/03/0043), Instituto de Salud Carlos III, E- 28029, Madrid, Spain
| | - Magdalena Gianotti
- Grup Metabolisme Energètic i Nutrició, Departament de Biologia Fonamental i Ciències de la Salut, Institut Universitari d'Investigació en Ciències de la Salut (IUNICS), Universitat de les Illes Balears, Ctra. Valldemossa, km 7.5, E-07122, Palma de Mallorca, Illes Balears, Spain; Institut d'Investigació Sanitària Illes Balears (IdISBa), Hospital Universitari Son Espases, E-07120, Palma de Mallorca, Illes Balears, Spain; Centro de Investigación Biomédica en Red Fisiopatología de la Obesidad y Nutrición (CIBERobn, CB06/03/0043), Instituto de Salud Carlos III, E- 28029, Madrid, Spain
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System Prediction and Validation of TCM for Chronic Myeloid Leukemia Treatment from the Perspective of Low-Toxicity Chemotherapy: A Stilbene α-Viniferin Has a Proapoptotic Effect on K562 Cells via the Mitochondrial Pathway. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2020; 2020:1986962. [PMID: 32104190 PMCID: PMC7035520 DOI: 10.1155/2020/1986962] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Accepted: 01/08/2020] [Indexed: 11/17/2022]
Abstract
Objective In traditional Chinese medicine (TCM), chronic myeloid leukemia (CML) has been attributed to “poisoned bone marrow,” which is viewed as a loss of Qi or blood, a deficiency in Yin or Yang that causes a complex imbalance between cell growth and death. Malignant myeloid progenitor cells display excessive growth that is difficult to control without toxicity. More than 60 herbs in TCM have shown efficacy against CML. However, the key molecules and mechanisms involved in the holistic-level characterization, as well as the effective target associations, are still unknown. Methods The present study employed a computational approach with filtering potential compounds via admetSAR, systems biology-based functional data prediction, and biochemical and molecular biological validation. Results We generated 118 bioactive compounds from 11 herbs within four dialectical therapy groups that are most commonly used to treat CML and predicted 141 potential targets. The stilbene resveratrol and its derivatives were found to be highly related to these targets. Among them, α-viniferin was predicted to target Bcl-2, caspase-3, 8, and 9, MAPK14, CDK2, HSP90AA1, and others, reflecting CML therapeutic strategies. In vitro, experimental data showed a nonnecrotic growth limitation of K562 cells caused by α-viniferin was predicted to target Bcl-2, caspase-3, 8, and 9, MAPK14, CDK2, HSP90AA1, and others, reflecting CML therapeutic strategies. μg·mL−1 at 24 h. Finally, we validated the chemotherapeutic effect of α-viniferin was predicted to target Bcl-2, caspase-3, 8, and 9, MAPK14, CDK2, HSP90AA1, and others, reflecting CML therapeutic strategies. Conclusions Our work sheds light on the mechanism of the efficacy of the stilbene α-viniferin in TCM for the prevention of CML. This work also predicts and validates targets in the mitochondrial signaling pathway, providing a novel strategy for CML treatment.α-viniferin was predicted to target Bcl-2, caspase-3, 8, and 9, MAPK14, CDK2, HSP90AA1, and others, reflecting CML therapeutic strategies.
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11
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Ardid-Ruiz A, Harazin A, Barna L, Walter FR, Bladé C, Suárez M, Deli MA, Aragonès G. The effects of Vitis vinifera L. phenolic compounds on a blood-brain barrier culture model: Expression of leptin receptors and protection against cytokine-induced damage. JOURNAL OF ETHNOPHARMACOLOGY 2020; 247:112253. [PMID: 31562952 DOI: 10.1016/j.jep.2019.112253] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2019] [Revised: 09/23/2019] [Accepted: 09/24/2019] [Indexed: 06/10/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE The medicinal properties of grapes (Vitis vinifera L.) are well known since ancient times. Ethnobotanical grape preparations, like the Ayurvedic Darakchasava are used as cardiotonic and for the treatment of cardiovascular diseases. Dried grape products are also applied in Iranian traditional medicine for memory problems, which are linked to the pathology of brain microvessels, a special part of the cardiovascular system. The anti-inflammatory and protective effects of these traditional preparations on the cardiovascular system are related to their bioactive phenolic compounds. AIM OF THE STUDY The blood-brain barrier (BBB), formed by brain capillaries, is not only involved in inflammatory and other diseases of the central nervous system, but also in many systemic diseases with an inflammatory component. Dietary obesity is a systemic chronic inflammatory condition in which the peripheral and central vascular system is affected. Among the cerebrovascular changes in obesity defective leptin transport across the BBB related to central leptin resistance is observed. Our aim was to study the protective effects of grape phenolic compounds epicatechin (EC), gallic acid (GA) and resveratrol (RSV) and grape-seed proanthocyanidin-rich extract (GSPE) on a cytokine-induced vascular endothelial inflammation model. Using a culture model of the BBB we investigated cytokine-induced endothelial damage and changes in the expression of leptin receptors and leptin transfer. MATERIALS AND METHODS For the BBB model, primary cultures of rat brain endothelial cells, glial cells and pericytes were used in co-culture. Cells were treated by tumor necrosis factor-α (TNF-α) and interleukin-1 β (IL-1β) (10 ng/ml each) to induce damage. Cell toxicity was evaluated by the measurement of impedance. The expression of leptin receptors was assessed by RT-qPCR and western blot. The production of reactive oxygen species (ROS) and nitric oxide (NO) were detected by fluorescent probes. RESULTS GSPE (10 μg/ml), EC (10 μM), GA (1 μM) or RSV (10 μM) did not change the viability of brain endothelial cells. The gene expression of the short leptin receptor isoform, Ob-Ra, was up-regulated by GSPE, EC and RSV, while the mRNA levels of Lrp2 and clusterin, clu/ApoJ were not affected. The tested compounds did not change the expression of the long leptin receptor isoform, Ob-Rb. RSV protected against the cytokine-induced increase in albumin permeability of the BBB model. GSPE and EC exerted an antioxidant effect and GSPE increased NO both alone and in the presence of cytokines. The cytokine-induced nuclear translocation of transcription factor NF-κB was blocked by GSPE, GA and RSV. Cytokines increased the mRNA expression of Lrp2 which was inhibited by EC. RSV increased Ob-Ra and Clu in the presence of cytokines. Cytokines elevated leptin transfer across the BBB model, which was not modified by GSPE or RSV. CONCLUSION Our results obtained on cell culture models confirm that natural grape compounds protect vascular endothelial cells against inflammatory damage in accordance with the ethnopharmacological use of grape preparations in cardiovascular diseases. Furthermore, grape compounds and GSPE, by exerting a beneficial effect on the BBB, may also be considered in the treatment of obesity after validation in clinical trials.
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Affiliation(s)
- Andrea Ardid-Ruiz
- Department of Biochemistry and Biotechnology, Nutrigenomics Research Group, Universitat Rovira I Virgili, Tarragona, Spain
| | - András Harazin
- Biological Barriers Research Group, Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Lilla Barna
- Biological Barriers Research Group, Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Fruzsina R Walter
- Biological Barriers Research Group, Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Cinta Bladé
- Department of Biochemistry and Biotechnology, Nutrigenomics Research Group, Universitat Rovira I Virgili, Tarragona, Spain
| | - Manuel Suárez
- Department of Biochemistry and Biotechnology, Nutrigenomics Research Group, Universitat Rovira I Virgili, Tarragona, Spain.
| | - Maria A Deli
- Biological Barriers Research Group, Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary; Department of Cell Biology and Molecular Medicine, University of Szeged, Szeged, Hungary.
| | - Gerard Aragonès
- Department of Biochemistry and Biotechnology, Nutrigenomics Research Group, Universitat Rovira I Virgili, Tarragona, Spain
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12
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Ardid-Ruiz A, Ibars M, Mena P, Del Rio D, Muguerza B, Arola L, Aragonès G, Suárez M. Resveratrol Treatment Enhances the Cellular Response to Leptin by Increasing OBRb Content in Palmitate-Induced Steatotic HepG2 Cells. Int J Mol Sci 2019; 20:ijms20246282. [PMID: 31842467 PMCID: PMC6941089 DOI: 10.3390/ijms20246282] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2019] [Revised: 12/09/2019] [Accepted: 12/11/2019] [Indexed: 12/15/2022] Open
Abstract
The interaction of leptin with its hepatic longest receptor (OBRb) promotes the phosphorylation of signal transducer and activator of transcription-3 (STAT3), protecting the liver from lipid accumulation. However, leptin signalling is disrupted in hepatic steatosis, causing leptin resistance. One promising strategy to combat this problem is the use of bioactive compounds such as polyphenols. Since resveratrol (RSV) is a modulator of lipid homeostasis in the liver, we investigated whether treatment with different doses of RSV restores appropriate leptin action and fat accumulation in palmitate-induced steatotic human hepatoma (HepG2) cells. Both RSV metabolism and the expression of molecules implicated in leptin signalling were analysed. RSV at a 10 μM concentration was entirely metabolized to resveratrol-3-sulfate after 24 and counteracted leptin resistance by increasing the protein levels of OBRb. In addition, RSV downregulated the expression of lipogenic genes including fatty acid synthase (Fas) and stearoyl-CoA desaturase-1 (Scd1) without any significant change in Sirtuin-1 (SIRT1) enzymatic activity. These results demonstrate that RSV restored leptin sensitivity in a cellular model of hepatic steatosis in a SIRT1-independent manner.
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Affiliation(s)
- Andrea Ardid-Ruiz
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Maria Ibars
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Pedro Mena
- Human Nutrition Unit, Department of Food and Drugs, University of Parma, 43125 Parma, Italy
| | - Daniele Del Rio
- Human Nutrition Unit, Department of Veterinary Medicine, University of Parma, 43125 Parma, Italy
- School of Advanced Studies on Food and Nutrition, University of Parma, 43215 Parma, Italy
- Microbiome Research Hub, University of Parma, 43125 Parma, Italy
| | - Begoña Muguerza
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Universitat Rovira i Virgili, 43007 Tarragona, Spain
| | - Lluís Arola
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Universitat Rovira i Virgili, 43007 Tarragona, Spain
- Eurecat, Centre Tecnològic de Catalunya, Biotechnological Area, 43204 Reus, Spain
| | - Gerard Aragonès
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Universitat Rovira i Virgili, 43007 Tarragona, Spain
- Correspondence: ; Tel.: +34-977-558-188
| | - Manuel Suárez
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Universitat Rovira i Virgili, 43007 Tarragona, Spain
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Nam SM, Jeon YJ. Proteostasis In The Endoplasmic Reticulum: Road to Cure. Cancers (Basel) 2019; 11:E1793. [PMID: 31739582 PMCID: PMC6895847 DOI: 10.3390/cancers11111793] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2019] [Revised: 11/04/2019] [Accepted: 11/12/2019] [Indexed: 12/14/2022] Open
Abstract
The endoplasmic reticulum (ER) is an interconnected organelle that is responsible for the biosynthesis, folding, maturation, stabilization, and trafficking of transmembrane and secretory proteins. Therefore, cells evolve protein quality-control equipment of the ER to ensure protein homeostasis, also termed proteostasis. However, disruption in the folding capacity of the ER caused by a large variety of pathophysiological insults leads to the accumulation of unfolded or misfolded proteins in this organelle, known as ER stress. Upon ER stress, unfolded protein response (UPR) of the ER is activated, integrates ER stress signals, and transduces the integrated signals to relive ER stress, thereby leading to the re-establishment of proteostasis. Intriguingly, severe and persistent ER stress and the subsequently sustained unfolded protein response (UPR) are closely associated with tumor development, angiogenesis, aggressiveness, immunosuppression, and therapeutic response of cancer. Additionally, the UPR interconnects various processes in and around the tumor microenvironment. Therefore, it has begun to be delineated that pharmacologically and genetically manipulating strategies directed to target the UPR of the ER might exhibit positive clinical outcome in cancer. In the present review, we summarize recent advances in our understanding of the UPR of the ER and the UPR of the ER-mitochondria interconnection. We also highlight new insights into how the UPR of the ER in response to pathophysiological perturbations is implicated in the pathogenesis of cancer. We provide the concept to target the UPR of the ER, eventually discussing the potential of therapeutic interventions for targeting the UPR of the ER for cancer treatment.
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Affiliation(s)
- Su Min Nam
- Department of Biochemistry, Chungnam National University College of Medicine, Daejeon 35015, Korea;
- Department of Medical Science, Chungnam National University College of Medicine, Daejeon 35015, Korea
| | - Young Joo Jeon
- Department of Biochemistry, Chungnam National University College of Medicine, Daejeon 35015, Korea;
- Department of Medical Science, Chungnam National University College of Medicine, Daejeon 35015, Korea
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Zámbó V, Simon-Szabó L, Sarnyai F, Mátyási J, Gór-Nagy Z, Somogyi A, Szelényi P, Kereszturi É, Tóth B, Csala M. Investigation of the putative rate-limiting role of electron transfer in fatty acid desaturation using transfected HEK293T cells. FEBS Lett 2019; 594:530-539. [PMID: 31557308 DOI: 10.1002/1873-3468.13622] [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] [Received: 07/05/2019] [Revised: 09/10/2019] [Accepted: 09/21/2019] [Indexed: 11/09/2022]
Abstract
Elevated fatty acid (FA) levels contribute to severe metabolic diseases. Unbalanced oversupply of saturated FAs is particularly damaging, which renders stearoyl-CoA desaturase (SCD1) activity an important factor of resistance. A SCD1-related oxidoreductase protects cells against palmitate toxicity, so we aimed to test whether desaturase activity is limited by SCD1 itself or by the associated electron supply. Unsaturated/saturated FA ratio was markedly elevated by SCD1 overexpression while it remained unaffected by the overexpression of SCD1-related electron transfer proteins in HEK293T cells. Electron supply was not rate-limiting either in palmitate-treated cells or in cells with enhanced SCD1 expression. Our findings indicate the rate-limiting role of SCD1 itself, and that FA desaturation cannot be facilitated by reinforcing the electron supply of the enzyme.
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Affiliation(s)
- Veronika Zámbó
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | - Laura Simon-Szabó
- Pathobiochemistry Research Group, Hungarian Academy of Sciences, Semmelweis University (MTA-SE), Budapest, Hungary
| | - Farkas Sarnyai
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | | | - Zsófia Gór-Nagy
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Hungary
| | - Anna Somogyi
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | - Péter Szelényi
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | - Éva Kereszturi
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
| | - Blanka Tóth
- Department of Inorganic and Analytical Chemistry, Budapest University of Technology and Economics, Hungary
| | - Miklós Csala
- Department of Medical Chemistry, Molecular Biology and Pathobiochemistry, Semmelweis University, Budapest, Hungary
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15
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Limonta P, Moretti RM, Marzagalli M, Fontana F, Raimondi M, Montagnani Marelli M. Role of Endoplasmic Reticulum Stress in the Anticancer Activity of Natural Compounds. Int J Mol Sci 2019; 20:ijms20040961. [PMID: 30813301 PMCID: PMC6412802 DOI: 10.3390/ijms20040961] [Citation(s) in RCA: 87] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2019] [Revised: 02/04/2019] [Accepted: 02/18/2019] [Indexed: 02/06/2023] Open
Abstract
Cancer represents a serious global health problem, and its incidence and mortality are rapidly growing worldwide. One of the main causes of the failure of an anticancer treatment is the development of drug resistance by cancer cells. Therefore, it is necessary to develop new drugs characterized by better pharmacological and toxicological profiles. Natural compounds can represent an optimal collection of bioactive molecules. Many natural compounds have been proven to possess anticancer effects in different types of tumors, but often the molecular mechanisms associated with their cytotoxicity are not completely understood. The endoplasmic reticulum (ER) is an organelle involved in multiple cellular processes. Alteration of ER homeostasis and its appropriate functioning originates a cascade of signaling events known as ER stress response or unfolded protein response (UPR). The UPR pathways involve three different sensors (protein kinase RNA(PKR)-like ER kinase (PERK), inositol requiring enzyme1α (IRE1) and activating transcription factor 6 (ATF6)) residing on the ER membranes. Although the main purpose of UPR is to restore this organelle's homeostasis, a persistent UPR can trigger cell death pathways such as apoptosis. There is a growing body of evidence showing that ER stress may play a role in the cytotoxicity of many natural compounds. In this review we present an overview of different plant-derived natural compounds, such as curcumin, resveratrol, green tea polyphenols, tocotrienols, and garcinia derivates, that exert their anticancer activity via ER stress modulation in different human cancers.
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Affiliation(s)
- Patrizia Limonta
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milano, Italy.
| | - Roberta M Moretti
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milano, Italy.
| | - Monica Marzagalli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milano, Italy.
| | - Fabrizio Fontana
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milano, Italy.
| | - Michela Raimondi
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milano, Italy.
| | - Marina Montagnani Marelli
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, 20133 Milano, Italy.
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16
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Yue Y, Shen P, Chang AL, Qi W, Kim KH, Kim D, Park Y. trans-Trismethoxy resveratrol decreased fat accumulation dependent on fat-6 and fat-7 in Caenorhabditis elegans. Food Funct 2019; 10:4966-4974. [DOI: 10.1039/c9fo00778d] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
trans-Trismethoxy resveratrol reduced fat accumulation via the regulation of FAT-6 and FAT-7, stearoyl-CoA desaturases homologs, in Caenorhabditis elegans.
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Affiliation(s)
- Yiren Yue
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
| | - Peiyi Shen
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
| | - Amanda L. Chang
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
| | - Weipeng Qi
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
| | - Kee-Hong Kim
- Department of Food Science
- Purdue University
- West Lafayette
- USA
- Purdue University Center for Cancer Research
| | - Daeyoung Kim
- Department of Mathematics and Statistics
- University of Massachusetts
- Amherst
- USA
| | - Yeonhwa Park
- Department of Food Science
- University of Massachusetts
- Amherst
- USA
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17
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Lebeaupin C, Vallée D, Hazari Y, Hetz C, Chevet E, Bailly-Maitre B. Endoplasmic reticulum stress signalling and the pathogenesis of non-alcoholic fatty liver disease. J Hepatol 2018; 69:927-947. [PMID: 29940269 DOI: 10.1016/j.jhep.2018.06.008] [Citation(s) in RCA: 528] [Impact Index Per Article: 88.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/12/2018] [Revised: 05/22/2018] [Accepted: 06/14/2018] [Indexed: 12/13/2022]
Abstract
The global epidemic of obesity has been accompanied by a rising burden of non-alcoholic fatty liver disease (NAFLD), with manifestations ranging from simple steatosis to non-alcoholic steatohepatitis, potentially developing into hepatocellular carcinoma. Although much attention has focused on NAFLD, its pathogenesis remains largely obscure. The hallmark of NAFLD is the hepatic accumulation of lipids, which subsequently leads to cellular stress and hepatic injury, eventually resulting in chronic liver disease. Abnormal lipid accumulation often coincides with insulin resistance in steatotic livers and is associated with perturbed endoplasmic reticulum (ER) proteostasis in hepatocytes. In response to chronic ER stress, an adaptive signalling pathway known as the unfolded protein response is triggered to restore ER proteostasis. However, the unfolded protein response can cause inflammation, inflammasome activation and, in the case of non-resolvable ER stress, the death of hepatocytes. Experimental data suggest that the unfolded protein response influences hepatic tumour development, aggressiveness and response to treatment, offering novel therapeutic avenues. Herein, we provide an overview of the evidence linking ER stress to NAFLD and discuss possible points of intervention.
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Affiliation(s)
| | - Deborah Vallée
- Université Côte d'Azur, INSERM, U1065, C3M, 06200 Nice, France
| | - Younis Hazari
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago, Chile; Center for Geroscience, Brain Health and Metabolism (GERO), Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago, Chile
| | - Claudio Hetz
- Biomedical Neuroscience Institute (BNI), Faculty of Medicine, University of Chile, Santiago, Chile; Center for Geroscience, Brain Health and Metabolism (GERO), Santiago, Chile; Program of Cellular and Molecular Biology, Institute of Biomedical Sciences, University of Chile, Santiago, Chile; Buck Institute for Research on Aging, Novato, CA 94945, USA; Department of Immunology and Infectious Diseases, Harvard School of Public Health, 02115 Boston, MA, USA
| | - Eric Chevet
- "Chemistry, Oncogenesis, Stress, Signaling", Inserm U1242, Université de Rennes, Rennes, France; Centre de Lutte Contre le Cancer Eugène Marquis, Rennes, France
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18
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Heo JR, Kim SM, Hwang KA, Kang JH, Choi KC. Resveratrol induced reactive oxygen species and endoplasmic reticulum stress‑mediated apoptosis, and cell cycle arrest in the A375SM malignant melanoma cell line. Int J Mol Med 2018; 42:1427-1435. [PMID: 29916532 PMCID: PMC6089775 DOI: 10.3892/ijmm.2018.3732] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 03/15/2018] [Indexed: 12/14/2022] Open
Abstract
Resveratrol, a dietary product present in grapes, vegetables and berries, regulates several signaling pathways that control cell division, cell growth, apoptosis and metastasis. Malignant melanoma proliferates more readily in comparison with any other types of skin cancer. In the present study, the anti‑cancer effect of resveratrol on melanoma cell proliferation was evaluated. Treating A375SM cells with resveratrol resulted in a decrease in cell growth. The alteration in the levels of cell cycle‑associated proteins was also examined by western blot analysis. Treatment with resveratrol was observed to increase the gene expression levels of p21 and p27, as well as decrease the gene expression of cyclin B. In addition, the generation of reactive oxygen species (ROS) and endoplasmic reticulum (ER) stress were confirmed at the cellular and protein levels using a 2',7'‑dichlorofluorescein diacetate assay, TUNEL assay and western blot analysis. Resveratrol induced the ROS‑p38‑p53 pathway by increasing the gene expression of phosphorylated p38 mitogen‑activated protein kinase, while it induced the p53 and ER stress pathway by increasing the gene expression levels of phosphorylated eukaryotic initiation factor 2α and C/EBP homologous protein. The enhanced ROS‑p38‑p53 and ER stress pathways promoted apoptosis by downregulating B‑cell lymphoma‑2 (Bcl‑2) expression and upregulating Bcl‑2‑associated X protein expression. In conclusion, resveratrol appears to be an inducer of ROS generation and ER stress, and may be responsible for growth inhibition and cell cycle arrest of A375SM melanoma cells.
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Affiliation(s)
| | | | | | - Ji-Houn Kang
- Laboratory of Internal Medicine, Veterinary Medical Center, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
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19
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Park S, Park JH, Jung HJ, Jang JH, Ahn S, Kim Y, Suh PG, Chae S, Yoon JH, Ryu SH, Hwang D. A secretome profile indicative of oleate-induced proliferation of HepG2 hepatocellular carcinoma cells. Exp Mol Med 2018; 50:1-14. [PMID: 30076294 PMCID: PMC6076227 DOI: 10.1038/s12276-018-0120-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 03/18/2018] [Accepted: 04/13/2018] [Indexed: 12/13/2022] Open
Abstract
Increased fatty acid (FA) is often observed in highly proliferative tumors. FAs have been shown to modulate the secretion of proteins from tumor cells, contributing to tumor survival. However, the secreted factors affected by FA have not been systematically explored. Here, we found that treatment of oleate, a monounsaturated omega-9 FA, promoted the proliferation of HepG2 cells. To examine the secreted factors associated with oleate-induced cell proliferation, we performed a comprehensive secretome profiling of oleate-treated and untreated HepG2 cells. A comparison of the secretomes identified 349 differentially secreted proteins (DSPs; 145 upregulated and 192 downregulated) in oleate-treated samples, compared to untreated samples. The functional enrichment and network analyses of the DSPs revealed that the 145 upregulated secreted proteins by oleate treatment were mainly associated with cell proliferation-related processes, such as lipid metabolism, inflammatory response, and ER stress. Based on the network models of the DSPs, we selected six DSPs (MIF, THBS1, PDIA3, APOA1, FASN, and EEF2) that can represent such processes related to cell proliferation. Thus, our results provided a secretome profile indicative of an oleate-induced proliferation of HepG2 cells. By exposing liver cancer cells to oleate, an unsaturated fatty acid, researchers have discovered a group of secreted proteins that may help explain why fatty acids increase proliferative capacity in tumors. Soyeon Park from Pohang University of Science and Technology in South Korea and coworkers treated liver cancer cells with oleate and then measured all the proteins released from the cells. Comparison with untreated cells revealed 145 proteins secreted at elevated levels—most of which were involved in metabolism, stress responses and other proliferation-related processes—and another 192 proteins secreted at reduced levels. The researchers ran additional biochemical analyses on six secreted proteins to validate the changes following exposure to oleate. The authors suggest that these validated proteins could now serve as biomarkers of tumor aggressiveness or as future drug targets.
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Affiliation(s)
- Soyeon Park
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Kyungbuk, 37673, Republic of Korea
| | - Ji-Hwan Park
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, 42988, Republic of Korea
| | - Hee-Jung Jung
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, 42988, Republic of Korea
| | - Jin-Hyeok Jang
- Department of Brain and Cognitive Sciences, Gyeongbuk Institute of Science and Technology (DGIST), Daegu, 42988, Republic of Korea
| | - Sanghyun Ahn
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, 42988, Republic of Korea
| | - Younah Kim
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, 42988, Republic of Korea
| | - Pann-Ghill Suh
- School of Life Sciences, Ulsan National Institute of Science and Technology, Ulsan, 44919, Republic of Korea
| | - Sehyun Chae
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, 42988, Republic of Korea
| | - Jong Hyuk Yoon
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Kyungbuk, 37673, Republic of Korea. .,Department of Neural Development and Disease, Korea Brain Research Institute, Daegu, 41068, Republic of Korea.
| | - Sung Ho Ryu
- Department of Life Sciences, Pohang University of Science and Technology (POSTECH), Pohang, Kyungbuk, 37673, Republic of Korea.
| | - Daehee Hwang
- Center for Plant Aging Research, Institute for Basic Science (IBS), Daegu, 42988, Republic of Korea. .,Department of New Biology, DGIST, Daegu, 42988, Republic of Korea.
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20
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Wang Y, Wang JH, Zhang XL, Wang XL, Yang L. Endoplasmic reticulum chaperone glucose-regulated protein 78 in gastric cancer: An emerging biomarker. Oncol Lett 2018; 15:6087-6093. [PMID: 29616092 DOI: 10.3892/ol.2018.8114] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Accepted: 06/15/2017] [Indexed: 12/17/2022] Open
Abstract
The endoplasmic reticulum (ER) is the principal organelle responsible for the synthesis, initial post-translational modification, folding, export and secretion of proteins. It is also responsible for the maintenance of cellular homeostasis. In response to cellular stress conditions including glucose deprivation, hypoxia and changes in calcium homeostasis, ER stress machinery is activated and triggers the unfolded protein response, resulting in the restoration of homeostasis or activation of cell death. Glucose-regulated protein 78 (GRP78), a molecular chaperone, may be induced by ER stress at the transcriptional and translational level. A number of studies have demonstrated that GRP78 serves an important role in tumor cell proliferation, metastasis, angiogenesis and drug-resistance. The present review systematically describes the association between GRP78 expression and gastric cancer pathogenesis, and emphasizes that GRP78 is a novel diagnostic and therapeutic biomarker of gastric cancer.
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Affiliation(s)
- Yan Wang
- Department of Medical Oncology, Nantong University Affiliated Tumor Hospital, Nantong, Jiangsu 226361, P.R. China
| | - Jian-Hong Wang
- Department of Medical Oncology, Nantong University Affiliated Tumor Hospital, Nantong, Jiangsu 226361, P.R. China
| | - Xun-Lei Zhang
- Department of Medical Oncology, Nantong University Affiliated Tumor Hospital, Nantong, Jiangsu 226361, P.R. China
| | - Xiao-Li Wang
- Department of Medical Oncology, Nantong University Affiliated Tumor Hospital, Nantong, Jiangsu 226361, P.R. China
| | - Lei Yang
- Department of Medical Oncology, Nantong University Affiliated Tumor Hospital, Nantong, Jiangsu 226361, P.R. China
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21
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Tomas-Hernández S, Blanco J, Rojas C, Roca-Martínez J, Ojeda-Montes MJ, Beltrán-Debón R, Garcia-Vallvé S, Pujadas G, Arola L, Mulero M. Resveratrol Potently Counteracts Quercetin Starvation-Induced Autophagy and Sensitizes HepG2 Cancer Cells to Apoptosis. Mol Nutr Food Res 2018; 62. [PMID: 29336118 DOI: 10.1002/mnfr.201700610] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 12/21/2017] [Indexed: 12/19/2022]
Abstract
SCOPE Resveratrol (RSV) has been described as a potent antioxidant, antisteatotic, and antitumor compound, and it has also been identified as a potent autophagy inducer. On the other hand, quercetin (QCT) is a dietary flavonoid with known antitumor, anti-inflammatory, and antidiabetic effects. Additionally, QCT increases autophagy. To study the hypothetical synergistic effect of both compounds, we test the combined effect of QCT and RSV on the autophagy process in HepG2 cells. METHODS AND RESULTS Autophagy is studied by western blotting, real-time RT-PCR, and cellular staining. Our results clearly indicate a bifunctional molecular effect of RSV. Both polyphenols are individually able to promote autophagy. Strikingly, when RSV is combined with QCT, it promotes a potent reduction of QCT-induced autophagy and influences proapoptotic signaling. CONCLUSION RSV acts differentially on the autophagic process depending on the cellular energetic state. We further characterize the molecular mechanisms related to this effect, and we observe that AMP-activated protein kinase (AMPK) phosphorylation, heme oxygenase 1 (HO-1) downregulation, lysosomal membrane permeabilization (LMP), and Zinc (Zn2+ ) dynamics could be important modulators of such RSV-related effects and could globally represent a promising strategy to sensitize cancer cells to QCT treatment.
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Affiliation(s)
- Sarah Tomas-Hernández
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
| | - Jordi Blanco
- Laboratory of Toxicology and Environmental Health, School of Medicine, IISPV, Universitat Rovira i Virgili, Reus, Spain
| | - Cristina Rojas
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
| | - Joel Roca-Martínez
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
| | - María José Ojeda-Montes
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
| | - Raúl Beltrán-Debón
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
| | - Santiago Garcia-Vallvé
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain.,Technological Unit of Nutrition and Health, EURECAT-Technological Center of Catalonia, Reus, Spain
| | - Gerard Pujadas
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain.,Technological Unit of Nutrition and Health, EURECAT-Technological Center of Catalonia, Reus, Spain
| | - Lluís Arola
- Nutrigenomics Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain.,Technological Unit of Nutrition and Health, EURECAT-Technological Center of Catalonia, Reus, Spain
| | - Miquel Mulero
- Cheminformatic and Nutrition Research Group, Department of Biochemistry and Biotechnology, Rovira i Virgili University, Tarragona, Spain
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22
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Saavedra-García P, Nichols K, Mahmud Z, Fan LYN, Lam EWF. Unravelling the role of fatty acid metabolism in cancer through the FOXO3-FOXM1 axis. Mol Cell Endocrinol 2018; 462:82-92. [PMID: 28087388 DOI: 10.1016/j.mce.2017.01.012] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 12/06/2016] [Accepted: 01/09/2017] [Indexed: 02/07/2023]
Abstract
Obesity and cachexia represent divergent states of nutritional and metabolic imbalance but both are intimately linked to cancer. There is an extensive overlap in their signalling pathways and molecular components involved such as fatty acids (FAs), which likely play a crucial role in cancer. Forkhead box (FOX) proteins are responsible of a wide range of transcriptional programmes during normal development, and the FOXO3-FOXM1 axis is associated with cancer initiation, progression and drug resistance. Free fatty acids (FFAs), FA synthesis and β-oxidation are associated with cancer development and progression. Meanwhile, insulin and some adipokines, that are up-regulated by FAs, are also involved in cancer development and poor prognosis. In this review, we discuss the role of FA metabolism in cancer and how FA metabolism integrates with the FOXO3-FOXM1 axis. These new insights may provide leads to better cancer diagnostics as well as strategies for tackling cancer development, progression and drug resistance.
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Affiliation(s)
- Paula Saavedra-García
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Katie Nichols
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Zimam Mahmud
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Lavender Yuen-Nam Fan
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK
| | - Eric W-F Lam
- Department of Surgery and Cancer, Imperial College London, Hammersmith Hospital Campus, London, W12 0NN, UK.
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23
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Heo JR, Lee GA, Kim GS, Hwang KA, Choi KC. Phytochemical-induced reactive oxygen species and endoplasmic reticulum stress-mediated apoptosis and differentiation in malignant melanoma cells. PHYTOMEDICINE : INTERNATIONAL JOURNAL OF PHYTOTHERAPY AND PHYTOPHARMACOLOGY 2018; 39:100-110. [PMID: 29433671 DOI: 10.1016/j.phymed.2017.12.006] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 11/03/2017] [Accepted: 12/06/2017] [Indexed: 06/08/2023]
Abstract
BACKGROUND Phytochemicals are derived from plants, vegetables and daily products and exert chemopreventive effects. Malignant melanoma is highly metastatic, and melanoma patients can develop chemotherapeutic resistance against conventional melanoma therapies. METHODS In the present study, we investigated the anti-cancer effect of the phytochemicals kaempferol (Kaem), genistein (Gen), and 3'3-diindolylmethane (DIM) on melanoma cell viability. We also evaluated the altered expression of cell cycle-related genes. We verified the production of intracellular reactive oxygen species (ROS) and endoplasmic reticulum (ER) stress at both the protein and cellular level using a western blot, TUNEL assay, and Dihydrodichlorofluorescein diacetate (DCF-DA) assay. RESULTS Treatment of A375SM melanoma cells with phytochemicals resulted in inhibition of cell growth. Treatment with phytochemicals increased the gene expression of p21 and decreased the gene expression of cyclin E and/or cyclin B. The three phytochemicals activated the ROS-p38-p53 apoptotic pathway by increasing the level of phosphorylated p38 MAPK and p53, and they activated the ER stress-mediated apoptotic pathway by increasing the level of phosphorylated eIF2α and C/EBP homologous protein (CHOP). Both the ROS-p38-p53 and ER stress-mediated pathway induced the mitochondrial apoptotic pathway by attenuating Bcl-2 expression and upregulating BAX. Detection of morphological changes demonstrated that Kaem and Gen can induce differentiation in A375SM cell line. CONCLUSION These results indicate that phytochemicals are potentially useful in treatments for melanoma due to their ability to inhibit melanoma cell growth and division via the ROS and ER stress pathway.
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Affiliation(s)
- Jae-Rim Heo
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Geum-A Lee
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Gyu-Sik Kim
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Kyung-A Hwang
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea
| | - Kyung-Chul Choi
- Laboratory of Biochemistry and Immunology, College of Veterinary Medicine, Chungbuk National University, Cheongju, Chungbuk 28644, Republic of Korea.
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24
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Yang C, Lim W, Bazer FW, Song G. Down-regulation of stearoyl-CoA desaturase-1 increases susceptibility to palmitic-acid-induced lipotoxicity in human trophoblast cells. J Nutr Biochem 2017; 54:35-47. [PMID: 29242171 DOI: 10.1016/j.jnutbio.2017.11.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 09/12/2017] [Accepted: 11/11/2017] [Indexed: 01/22/2023]
Abstract
In early pregnancy, adequate dietary factors are important for the growth of human trophoblast cells, followed by placental development. Although stearoyl-CoA desaturase 1 (SCD1) is expected to relieve palmitic acid (PA)-induced lipotoxicity by regulating diacylglycerol and ceramide, its function is unclear in human trophoblast cells. The aim was to investigate inhibitory effects of SCD1 activity on PA-induced trophoblast cell death. PA induces cell death and inhibits the invasion of human trophoblast cells (HTR8/SVneo). In addition, we demonstrate that SCD1 has a protective role against PA in human trophoblast cells by regulating AKT-mediated signaling pathway and mitochondrial membrane potential. The knockdown of SCD1 enhances the proapoptotic activity of PA in HTR8/SVneo cells. Lastly, we investigated microRNA expression predicted to target SCD1 and diacylglycerol O-acyltransferase 1 (DGAT1) by PA. Collectively, the results suggest potential roles of SCD1 and DGAT1 in alleviating the toxicity of PA and maintaining lipid homeostasis for normal placentation.
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Affiliation(s)
- Changwon Yang
- Institute of Animal Molecular Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea; Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea
| | - Whasun Lim
- Department of Biomedical Sciences, Catholic Kwandong University, Gangneung, 25601, Republic of Korea
| | - Fuller W Bazer
- Center for Animal Biotechnology and Genomics and Department of Animal Science, Texas A&M University, College Station, 77843-2471, Texas, USA
| | - Gwonhwa Song
- Institute of Animal Molecular Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea; Department of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, 02841, Republic of Korea.
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25
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Martin-Jiménez CA, García-Vega Á, Cabezas R, Aliev G, Echeverria V, González J, Barreto GE. Astrocytes and endoplasmic reticulum stress: A bridge between obesity and neurodegenerative diseases. Prog Neurobiol 2017; 158:45-68. [DOI: 10.1016/j.pneurobio.2017.08.001] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 05/22/2017] [Accepted: 08/04/2017] [Indexed: 12/13/2022]
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26
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Gu Y, Chen J, Meng Z, Yao J, Ge W, Chen K, Cheng S, Fu J, Peng L, Zhao Y. Diazoxide prevents H 2O 2-induced chondrocyte apoptosis and cartilage degeneration in a rat model of osteoarthritis by reducing endoplasmic reticulum stress. Biomed Pharmacother 2017; 95:1886-1894. [PMID: 28968949 DOI: 10.1016/j.biopha.2017.09.082] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2017] [Revised: 09/18/2017] [Accepted: 09/18/2017] [Indexed: 01/01/2023] Open
Abstract
Osteoarthritis (OA) is a common disease affecting elderly individuals. Its incidence rises sharply with age, and chondrocyte apoptosis plays a vital role in its pathogenesis. Diazoxide opens mitochondrial ATP-sensitive potassium (mitoKATP) channels and exerts multiple pharmacological effects, including reductions in blood pressure and blood sugar levels. It also exerts anti-apoptotic activities, but the cellular and molecular mechanisms by which diazoxide inhibits chondrocyte apoptosis are unknown, as is whether apoptosis is related to endoplasmic reticulum stress (ERS). In the present study, we explored the mechanism underlying the chondroprotective effect of diazoxide on hydrogen peroxide (H2O2)-stimulated chondrocyte apoptosis in rats with surgically induced OA. A cell counting kit-8 (CCK-8) assay showed that the viability of H2O2-stimulated chondrocytes was enhanced in a dose-dependent manner. However, at a concentration ≥400μM, diazoxide had other, negative effects. The protective effect of diazoxide in vitro included inhibition of the ERS response and of mitochondrial dysfunction induced by H2O2 stimulation. These responses were related to activation of the PERK1/2 and ERK1/2 signaling pathways; the prevention of chondrocyte apoptosis; the down-regulation of caspase-3, Bax, ATF-6 and C/EBP-homologous protein (CHOP) expression; and the up-regulation of Bcl-2 and Col II. In vivo, histological and immunohistochemical analyses of caspase-3 and CHOP expression revealed that diazoxide ameliorated cartilage degeneration in a rat model of OA, as revealed by histological and immunohistochemical analyses of caspase-3 and CHOP expression. Diazoxide suppressed H2O2-triggered chondrocyte apoptosis, and ameliorated cartilage degeneration, by inhibiting the development of ERS.
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Affiliation(s)
- YunTao Gu
- Trauma Center, The First Affiliated Hospital of Hainan Medical College, Haikou, Hainan Province 570100, China; Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - Jian Chen
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - ZhuLong Meng
- Trauma Center, The First Affiliated Hospital of Hainan Medical College, Haikou, Hainan Province 570100, China
| | - JiangLing Yao
- Trauma Center, The First Affiliated Hospital of Hainan Medical College, Haikou, Hainan Province 570100, China
| | - WanYu Ge
- Department of Pathology, Anhui Provincial Hospital, HeFei City, Anhui Province 230000, China
| | - KeWei Chen
- Department of Orthopaedic Surgery, The Second Affiliated Hospital of Wenzhou Medical University, Wenzhou 325000, China
| | - ShaoWen Cheng
- Trauma Center, The First Affiliated Hospital of Hainan Medical College, Haikou, Hainan Province 570100, China
| | - Jian Fu
- Trauma Center, The First Affiliated Hospital of Hainan Medical College, Haikou, Hainan Province 570100, China
| | - Lei Peng
- Trauma Center, The First Affiliated Hospital of Hainan Medical College, Haikou, Hainan Province 570100, China.
| | - YingZheng Zhao
- School of Pharmaceutical Sciences, Wenzhou Medical University, Wenzhou City, Zhejiang Province 325035, China.
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27
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Saunier E, Antonio S, Regazzetti A, Auzeil N, Laprévote O, Shay JW, Coumoul X, Barouki R, Benelli C, Huc L, Bortoli S. Resveratrol reverses the Warburg effect by targeting the pyruvate dehydrogenase complex in colon cancer cells. Sci Rep 2017; 7:6945. [PMID: 28761044 PMCID: PMC5537345 DOI: 10.1038/s41598-017-07006-0] [Citation(s) in RCA: 74] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 06/20/2017] [Indexed: 01/23/2023] Open
Abstract
Resveratrol (RES), a polyphenol found in natural foods, displays anti-oxidant, anti-inflammatory and anti-proliferative properties potentially beneficial in cancers, in particular in the prevention of tumor growth. However, the rapid metabolism of resveratrol strongly limits its bioavailability. The molecular mechanisms sustaining the potential biological activity of low doses of resveratrol has not been extensively studied and, thus, needs better characterization. Here, we show that resveratrol (10 µM, 48 hr) induces both a cell growth arrest and a metabolic reprogramming in colon cancer cells. Resveratrol modifies the lipidomic profile, increases oxidative capacities and decreases glycolysis, in association with a decreased pentose phosphate activity and an increased ATP production. Resveratrol targets the pyruvate dehydrogenase (PDH) complex, a key mitochondrial gatekeeper of energy metabolism, leading to an enhanced PDH activity. Calcium chelation, as well as the blockade of the mitochondrial calcium uniport, prevents the resveratrol-induced augmentation in oxidative capacities and the increased PDH activity suggesting that calcium might play a role in the metabolic shift. We further demonstrate that the inhibition of the CamKKB or the downstream AMPK pathway partly abolished the resveratrol-induced increase of glucose oxidation. This suggests that resveratrol might improve the oxidative capacities of cancer cells through the CamKKB/AMPK pathway.
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Affiliation(s)
- Elise Saunier
- Université Paris Descartes, Sorbonne Paris Cité, UFR des Sciences Fondamentales et Biomédicales, INSERM UMR 1124, F-75006, Paris, France.,INSERM UMR 1124, F-75006, Paris, France
| | - Samantha Antonio
- Université Paris Descartes, Sorbonne Paris Cité, UFR des Sciences Fondamentales et Biomédicales, INSERM UMR 1124, F-75006, Paris, France.,INSERM UMR 1124, F-75006, Paris, France
| | - Anne Regazzetti
- Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques, Laboratoire C-TAC, Paris, F-75006, France
| | - Nicolas Auzeil
- Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques, Laboratoire C-TAC, Paris, F-75006, France
| | - Olivier Laprévote
- Université Paris Descartes, Sorbonne Paris Cité, Faculté des Sciences Pharmaceutiques et Biologiques, Laboratoire C-TAC, Paris, F-75006, France
| | - Jerry W Shay
- University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | - Xavier Coumoul
- Université Paris Descartes, Sorbonne Paris Cité, UFR des Sciences Fondamentales et Biomédicales, INSERM UMR 1124, F-75006, Paris, France.,INSERM UMR 1124, F-75006, Paris, France
| | - Robert Barouki
- Université Paris Descartes, Sorbonne Paris Cité, UFR des Sciences Fondamentales et Biomédicales, INSERM UMR 1124, F-75006, Paris, France.,INSERM UMR 1124, F-75006, Paris, France
| | - Chantal Benelli
- Université Paris Descartes, Sorbonne Paris Cité, UFR des Sciences Fondamentales et Biomédicales, INSERM UMR 1124, F-75006, Paris, France.,INSERM UMR 1124, F-75006, Paris, France
| | - Laurence Huc
- INRA; TOXALIM (Research Centre in Food Toxicology); 180 Chemin de Tournefeuille, F-31027, Toulouse, France.,Université de Toulouse III; INP; ENVT, UPS; TOXALIM, F-31027, Toulouse, France
| | - Sylvie Bortoli
- Université Paris Descartes, Sorbonne Paris Cité, UFR des Sciences Fondamentales et Biomédicales, INSERM UMR 1124, F-75006, Paris, France. .,INSERM UMR 1124, F-75006, Paris, France.
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28
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Nishizawa S, Sumi H, Satoh Y, Yamamoto Y, Kitazawa S, Honda K, Araki H, Kakoi K, Imamura K, Sasaki M, Miyahisa I, Satomi Y, Nishigaki R, Hirayama M, Aoyama K, Maezaki H, Hara T. In vitro and in vivo antitumor activities of T-3764518, a novel and orally available small molecule stearoyl-CoA desaturase 1 inhibitor. Eur J Pharmacol 2017; 807:21-31. [PMID: 28442322 DOI: 10.1016/j.ejphar.2017.03.064] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2017] [Revised: 03/25/2017] [Accepted: 03/27/2017] [Indexed: 01/18/2023]
Abstract
Most cancer cells are characterized by elevated lipid biosynthesis. The rapid proliferation of cancer cells requires de novo synthesis of fatty acids. Stearoyl-CoA desaturase-1 (SCD1), a key enzyme for lipogenesis, is overexpressed in various types of cancer and plays an important role in cancer cell proliferation. Therefore, it has been studied as a candidate target for cancer therapy. In this study, we demonstrate the pharmacological properties of T-3764518, a novel and orally available small molecule inhibitor of SCD1. T-3764518 inhibited stearoyl-CoA desaturase-catalyzed conversion of stearoyl-CoA to oleoyl-CoA in colorectal cancer HCT-116 cells and their growth. Further, it slowed tumor growth in an HCT-116 and a mesothelioma MSTO-211H mouse xenograft model. Comprehensive lipidomic analyses revealed that T-3764518 increases the membrane ratio of saturated: unsaturated fatty acids in various lipid species such as phosphatidylcholines and diacylglycerols in both cultured cells and HCT-116 xenografts. Treatment-associated lipidomic changes were followed by activated endoplasmic reticulum (ER) stress responses such as increased immunoglobulin heavy chain-binding protein expression in HCT-116 cells. These T-3764518-induced changes led to an increase in cleaved poly (ADP-ribose) polymerase 1 (PARP1), a marker of apoptosis. Additionally, bovine serum albumin conjugated with oleic acid, an SCD1 product, prevented cell growth inhibition and ER stress responses by T-3764518, indicating that these outcomes were not attributable to off-target effects. These results indicate that T-3764518 is a promising new anticancer drug candidate.
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Affiliation(s)
- Satoru Nishizawa
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Hiroyuki Sumi
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Yoshihiko Satoh
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Yukiko Yamamoto
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Satoshi Kitazawa
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Kohei Honda
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Hideo Araki
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Kazuyo Kakoi
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Keisuke Imamura
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Masako Sasaki
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Ikuo Miyahisa
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Yoshinori Satomi
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Ryuuichi Nishigaki
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Megumi Hirayama
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Kazunobu Aoyama
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Hironobu Maezaki
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
| | - Takahito Hara
- Oncology Dug Discovery Unit, Pharmaceutical Research Division, Takeda Pharmaceutical Company Limited, 26-1, Muraoka-Higashi 2-chome, Fujisawa, Kanagawa 251-8555, Japan.
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Rui Y, Cheng J, Qin L, Shan C, Chang J, Wang G, Wan Z. Effects of vitamin D and resveratrol on metabolic associated markers in liver and adipose tissue from SAMP8 mice. Exp Gerontol 2017; 93:16-28. [PMID: 28411010 DOI: 10.1016/j.exger.2017.03.017] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2016] [Revised: 03/17/2017] [Accepted: 03/19/2017] [Indexed: 12/31/2022]
Abstract
SAMP8 mice exhibit multiple metabolic characteristics associated with age, and it is a suitable candidate for researching aging associated metabolic dysfunction. OBJECTIVES We aimed to 1) explore how key metabolic markers will be altered in both liver and adipose tissue with aging in SAMP8 mice; and 2) how the combination of vitamin D (VD) with resveratrol (RSV) will affect aging associated metabolic impairment in liver and adipose tissue from SAMP8 mice. METHODS SAMP8 mice and their control SAMR1 mice were divided into 5 groups, i.e. SAMR1, SAMP8, SAMP8 mice supplemented with VD, RSV and VD combined with RSV group, respectively. At the end of the intervention, glucose and insulin tolerance, p-AMP-activated protein kinase (AMPK) and amyloid precursor protein (APP), and endoplasmic reticulum (ER) stress markers in liver and adipose tissue, adiponectin secretion, p-NF-κBp65 and TNF-α protein expression in adipose tissue were determined. RESULTS Compared to SAMR1 control, SAMP8 mice demonstrate impaired glucose tolerance and reduction in circulating adiponectin level; in the liver, SAMP8 mice have reduction in p-Aktser473, elevation in PTP1B and APP, p-eIF2α, GRP78 and p-JNK protein expression. In epididymal (EPI) fat, SAMP8 mice also have elevated p-Aktser473 and PTP1B compared to SAMR1 mice. In both epididymal (EPI) and subcutaneous (SC) fat, there were elevated ER stress markers, reduced p-AMPK and elevated APP, as well as elevated p-NF-κBp65 and TNF-α protein expression from SAMP8 compared to SAMR1 mice. In liver, the combined intervention significantly restored p-Aktser473, p-eIF2α and p-JNK protein expression. In both EPI and SC fat, the combined intervention is effective for reducing p-NF-κB p65 and TNF-α in both fat depot, while only partially reduced ER stress markers in SC fat. As for adiponectin, their combination is unable to reverse reduction in adiponectin level. Adiponectin secretion in SC fat from VD, RSV and VDRSV group were also significantly reduced compared to SAMR1. CONCLUSION The combined intervention might exert greater beneficial effects for reversing aging associated metabolic dysfunction in liver and adipose tissue from SAMP8 mice.
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Affiliation(s)
- Yehua Rui
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, PR China
| | - Jinbo Cheng
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, PR China
| | - Liqiang Qin
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, PR China
| | - Cheng Shan
- University of Waterloo, Waterloo, Ontario, Canada
| | - Jie Chang
- Department of Occupational and Environmental Health, School of Public Health, Soochow University, 199 Ren'ai Road, Suzhou 215123, PR China
| | - Guiping Wang
- Laboratory Animal Center, Soochow University, 199 Ren'ai Road, Suzhou 215123, PR China
| | - Zhongxiao Wan
- Department of Nutrition and Food Hygiene, School of Public Health, Soochow University, Suzhou, PR China; Jiangsu Key Laboratory of Preventive and Translational Medicine for Geriatric Disease, Soochow University, 199 Ren'ai Road, Suzhou 215123, PR China.
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Deevska GM, Dotson PP, Karakashian AA, Isaac G, Wrona M, Kelly SB, Merrill AH, Nikolova-Karakashian MN. Novel Interconnections in Lipid Metabolism Revealed by Overexpression of Sphingomyelin Synthase-1. J Biol Chem 2017; 292:5110-5122. [PMID: 28087695 DOI: 10.1074/jbc.m116.751602] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2016] [Revised: 01/13/2017] [Indexed: 12/11/2022] Open
Abstract
This study investigates the consequences of elevating sphingomyelin synthase 1 (SMS1) activity, which generates the main mammalian sphingolipid, sphingomyelin. HepG2 cells stably transfected with SMS1 (HepG2-SMS1) exhibit elevated enzyme activity in vitro and increased sphingomyelin content (mainly C22:0- and C24:0-sphingomyelin) but lower hexosylceramide (Hex-Cer) levels. HepG2-SMS1 cells have fewer triacylglycerols than controls but similar diacylglycerol acyltransferase activity, triacylglycerol secretion, and mitochondrial function. Treatment with 1 mm palmitate increases de novo ceramide synthesis in both cell lines to a similar degree, causing accumulation of C16:0-ceramide (and some C18:0-, C20:0-, and C22:0-ceramides) as well as C16:0- and C18:0-Hex-Cers. In these experiments, the palmitic acid is delivered as a complex with delipidated BSA (2:1, mol/mol) and does not induce significant lipotoxicity. Based on precursor labeling, the flux through SM synthase also increases, which is exacerbated in HepG2-SMS1 cells. In contrast, palmitate-induced lipid droplet formation is significantly reduced in HepG2-SMS1 cells. [14C]Choline and [3H]palmitate tracking shows that SMS1 overexpression apparently affects the partitioning of palmitate-enriched diacylglycerol between the phosphatidylcholine and triacylglycerol pathways, to the benefit of the former. Furthermore, triacylglycerols from HepG2-SMS1 cells are enriched in polyunsaturated fatty acids, which is indicative of active remodeling. Together, these results delineate novel metabolic interactions between glycerolipids and sphingolipids.
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Affiliation(s)
- Gergana M Deevska
- From the Department of Physiology, University of Kentucky, Lexington, Kentucky 40536
| | - Patrick P Dotson
- From the Department of Physiology, University of Kentucky, Lexington, Kentucky 40536
| | | | - Giorgis Isaac
- Pharmaceutical Discovery and Life Sciences, Waters Corporation, Milford, Massachusetts 01757, and
| | - Mark Wrona
- Pharmaceutical Discovery and Life Sciences, Waters Corporation, Milford, Massachusetts 01757, and
| | - Samuel B Kelly
- the School of Biology and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332
| | - Alfred H Merrill
- the School of Biology and Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332
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Bo P, Lien JC, Chen YY, Yu FS, Lu HF, Yu CS, Chou YC, Yu CC, Chung JG. Allyl Isothiocyanate Induces Cell Toxicity by Multiple Pathways in Human Breast Cancer Cells. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2016; 44:415-37. [PMID: 27080949 DOI: 10.1142/s0192415x16500245] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Isothiocyanates (ITCs) occur in many cruciferous vegetables. These compounds, which have significant anticancer actions, can induce apoptosis in different human cancer cell lines. In the present study, we investigated if allyl isothiocyanate (AITC) would induce toxicity in human breast cancer MCF-7 (estrogen receptor positive) and MDA-MB-231 (estrogen receptor negative) cells. We found that AITC stimulated reactive oxygen species and Ca[Formula: see text] production, and decreased the mitochondrial membrane potential. Activity of caspase-8, -9 and -3 was increased by AITC in both cell lines. AITC also induced mitochondrial-mediated apoptosis, as shown by cytochrome c, AIF and Endo G release from mitochondria, activation of caspase-9 and caspase-3, and formation of DAPI-positive cells. There was a significant reduction in the levels of the anti-apoptotic protein Bcl-2 along with a marked increase in the pro-apoptotic protein Bax in both cell lines. AITC induced apoptosis in human breast cancer MCF-7 cells via AIF and Endo G signaling pathways, but in MDA-MB-231 cells apoptosis occurred via the GADD153 pathway. This study has revealed novel anti-cancer mechanisms of AITC, a compound that is ordinarily present in human diets and may have potential therapeutic effects in various cancers.
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Affiliation(s)
- Peng Bo
- * Departments of Biological Science and Technology
| | | | - Ya-Yin Chen
- ¶ Department of Chinese-Western Medicine, Chung Shan Medical University Hospital, Taichung 402, Taiwan.,∥ School of Medicine, Chung Shan Medical University, Taichung 402, Taiwan
| | | | - Hsu-Feng Lu
- ** Departments of Clinical Pathology, Cheng Hsin General Hospital, Taipei, Taiwan
| | - Chun-Shu Yu
- § School of Pharmacy, China Medical University, Taichung 404, Taiwan
| | - Yu-Cheng Chou
- †† Division of Neurosurgical Oncology, Neurological Institute, Taichung Veterans General Hospital, Taichung 407, Taiwan.,‡‡ National Defense Medical Center, Taipei 114, Taiwan
| | - Chien-Chih Yu
- § School of Pharmacy, China Medical University, Taichung 404, Taiwan
| | - Jing-Gung Chung
- * Departments of Biological Science and Technology.,§§ Department of Biotechnology, Asia University, Taichung 413, Taiwan
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Madreiter-Sokolowski CT, Gottschalk B, Parichatikanond W, Eroglu E, Klec C, Waldeck-Weiermair M, Malli R, Graier WF. Resveratrol Specifically Kills Cancer Cells by a Devastating Increase in the Ca2+ Coupling Between the Greatly Tethered Endoplasmic Reticulum and Mitochondria. Cell Physiol Biochem 2016; 39:1404-20. [PMID: 27606689 PMCID: PMC5382978 DOI: 10.1159/000447844] [Citation(s) in RCA: 75] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/21/2016] [Indexed: 12/31/2022] Open
Abstract
Background/Aims Resveratrol and its derivate piceatannol are known to induce cancer cell-specific cell death. While multiple mechanisms of actions have been described including the inhibition of ATP synthase, changes in mitochondrial membrane potential and ROS levels, the exact mechanisms of cancer specificity of these polyphenols remain unclear. This paper is designed to reveal the molecular basis of the cancer-specific initiation of cell death by resveratrol and piceatannol. Methods The two cancer cell lines EA.hy926 and HeLa, and somatic short-term cultured HUVEC were used. Cell viability and caspase 3/7 activity were tested. Mitochondrial, cytosolic and endoplasmic reticulum Ca2+ as well as cytosolic and mitochondrial ATP levels were measured using single cell fluorescence microscopy and respective genetically-encoded sensors. Mitochondria-ER junctions were analyzed applying super-resolution SIM and ImageJ-based image analysis. Results Resveratrol and piceatannol selectively trigger death in cancer but not somatic cells. Hence, these polyphenols strongly enhanced mitochondrial Ca2+ uptake in cancer exclusively. Resveratrol and piceatannol predominantly affect mitochondrial but not cytosolic ATP content that yields in a reduced SERCA activity. Decreased SERCA activity and the strongly enriched tethering of the ER and mitochondria in cancer cells result in an enhanced MCU/Letm1-dependent mitochondrial Ca2+ uptake upon intracellular Ca2+ release exclusively in cancer cells. Accordingly, resveratrol/piceatannol-induced cancer cell death could be prevented by siRNA-mediated knock-down of MCU and Letm1. Conclusions Because their greatly enriched ER-mitochondria tethering, cancer cells are highly susceptible for resveratrol/piceatannol-induced reduction of SERCA activity to yield mitochondrial Ca2+ overload and subsequent cancer cell death.
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Wu FL, Liu WY, Van Poucke S, Braddock M, Jin WM, Xiao J, Li XK, Zheng MH. Targeting endoplasmic reticulum stress in liver disease. Expert Rev Gastroenterol Hepatol 2016; 10:1041-52. [PMID: 27093595 DOI: 10.1080/17474124.2016.1179575] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
INTRODUCTION The accumulation of unfolded protein in the endoplasmic reticulum (ER) initiates an unfolded protein response (UPR) via three signal transduction cascades, which involve protein kinase RNA-like ER kinase (PERK), inositol requiring enzyme-1α (IRE1α) and activating transcription factor-6α (ATF6α). An ER stress response is observed in nearly all physiologies related to acute and chronic liver disease and therapeutic targeting of the mechanisms implicated in UPR signaling have attracted considerable attention. AREAS COVERED This review focuses on the correlation between ER stress and liver disease and the possible targets which may drive the potential for novel therapeutic intervention. Expert Commentary: We describe pathways which are involved in UPR signaling and their potential correlation with various liver diseases and underlying mechanisms which may present opportunities for novel therapeutic strategies are discussed.
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Affiliation(s)
- Fa-Ling Wu
- a Department of Hepatology, Liver Research Center , the First Affiliated Hospital of Wenzhou Medical University , Wenzhou , China.,b Institute of Hepatology , Wenzhou Medical University , Wenzhou , China
| | - Wen-Yue Liu
- c Department of Endocrinology , the First Affiliated Hospital of Wenzhou Medical University , Wenzhou , China
| | - Sven Van Poucke
- d Department of Anesthesiology, Intensive Care, Emergency Medicine and Pain Therapy , Ziekenhuis Oost-Limburg , Genk , Belgium
| | - Martin Braddock
- e Global Medicines Development , AstraZeneca R&D , Alderley Park , UK
| | - Wei-Min Jin
- f Department of Infection Diseases , People Hospital of Wencheng County , Wenzhou , China
| | - Jian Xiao
- g Institute of Biology Science , Wenzhou University , Wenzhou , China.,h School of Pharmacy , Wenzhou Medical University , Wenzhou , China
| | - Xiao-Kun Li
- g Institute of Biology Science , Wenzhou University , Wenzhou , China.,h School of Pharmacy , Wenzhou Medical University , Wenzhou , China
| | - Ming-Hua Zheng
- a Department of Hepatology, Liver Research Center , the First Affiliated Hospital of Wenzhou Medical University , Wenzhou , China.,b Institute of Hepatology , Wenzhou Medical University , Wenzhou , China
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Zhang JS, Lei JP, Wei GQ, Chen H, Ma CY, Jiang HZ. Natural fatty acid synthase inhibitors as potent therapeutic agents for cancers: A review. PHARMACEUTICAL BIOLOGY 2016; 54:1919-1925. [PMID: 26864638 DOI: 10.3109/13880209.2015.1113995] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/05/2015] [Revised: 09/02/2015] [Accepted: 10/24/2015] [Indexed: 06/05/2023]
Abstract
Context Fatty acid synthase (FAS) is the only mammalian enzyme to catalyse the synthesis of fatty acid. The expression level of FAS is related to cancer progression, aggressiveness and metastasis. In recent years, research on natural FAS inhibitors with significant bioactivities and low side effects has increasingly become a new trend. Herein, we present recent research progress on natural fatty acid synthase inhibitors as potent therapeutic agents. Objective This paper is a mini overview of the typical natural FAS inhibitors and their possible mechanism of action in the past 10 years (2004-2014). Method The information was collected and compiled through major databases including Web of Science, PubMed, and CNKI. Results Many natural products induce cancer cells apoptosis by inhibiting FAS expression, with fewer side effects than synthetic inhibitors. Conclusion Natural FAS inhibitors are widely distributed in plants (especially in herbs and foods). Some natural products (mainly phenolics) possessing potent biological activities and stable structures are available as lead compounds to synthesise promising FAS inhibitors.
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Affiliation(s)
- Jia-Sui Zhang
- a School of Life Science and Engineering, Southwest Jiaotong University , Chengdu , China
| | - Jie-Ping Lei
- a School of Life Science and Engineering, Southwest Jiaotong University , Chengdu , China
| | - Guo-Qing Wei
- a School of Life Science and Engineering, Southwest Jiaotong University , Chengdu , China
| | - Hui Chen
- a School of Life Science and Engineering, Southwest Jiaotong University , Chengdu , China
| | - Chao-Ying Ma
- a School of Life Science and Engineering, Southwest Jiaotong University , Chengdu , China
- b School of Medicine, Southwest Jiaotong University , Chengdu , China
| | - He-Zhong Jiang
- a School of Life Science and Engineering, Southwest Jiaotong University , Chengdu , China
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The Natural Occurring Compounds Targeting Endoplasmic Reticulum Stress. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2016; 2016:7831282. [PMID: 27563337 PMCID: PMC4987485 DOI: 10.1155/2016/7831282] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 04/29/2016] [Accepted: 07/04/2016] [Indexed: 12/14/2022]
Abstract
ER stress has been implicated in pathophysiological development of many diseases. Persistent overwhelming stimuli trigger ER stress to initiate apoptosis, autophagy, and cell death. IRE1-JNK and eIF2α-CHOP signaling pathways are the two important players of ER stress, which is also modulated by ROS production, calcium disturbance, and inflammatory factors. ER stress has been developed as a novel strategy for diseases management. Recently, a vast of research focuses on the natural occurring compounds targeting ER stress, which results in medical benefits to human diseases. These small reported molecules mainly include polyphenols, alkaloids, and saponins. Many of them have been developed for use in clinical applications. To better understand the pharmacological mechanism of these molecules in ER stress in diseases, efforts have been made to discover and deliver medical merits. In this paper, we will summarize the natural occurring compounds targeting ER stress.
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Del Bas JM, Caimari A, Rodriguez-Naranjo MI, Childs CE, Paras Chavez C, West AL, Miles EA, Arola L, Calder PC. Impairment of lysophospholipid metabolism in obesity: altered plasma profile and desensitization to the modulatory properties of n-3 polyunsaturated fatty acids in a randomized controlled trial. Am J Clin Nutr 2016; 104:266-79. [PMID: 27305954 DOI: 10.3945/ajcn.116.130872] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2016] [Accepted: 05/05/2016] [Indexed: 11/14/2022] Open
Abstract
BACKGROUND Plasma lysophospholipids have emerged as signaling molecules with important effects on inflammation, insulin resistance, and fatty liver disease, each of which is linked closely to obesity. Dietary n-3 (ω-3) polyunsaturated fatty acids (PUFAs) may be able to improve these conditions. OBJECTIVE The objective of this study was to assess the response of plasma lysophospholipids to obesity, n-3 PUFA consumption, and a high-fat meal challenge to better understand the role of lysophospholipid metabolism in the progression of obesity-related disorders. DESIGN We determined the concentrations of 8 lysophosphatidylcholines, 11 lysophosphatidylethanolamines, and 7 lysophosphatidylinositols in the plasma of 34 normal-weight and 38 obese subjects randomly assigned to consume corn oil (control) or n-3 PUFA-rich fish oil (3 g/d; n = 15-19/group) for 90 d. Blood samples were collected on the last day of the study under fasting conditions and 6 h after a high-fat meal (1135 kcal, 86 g fat) challenge. The profile of secreted lysophospholipids was studied in HepG2 cells under palmitate-induced steatosis. RESULTS Obese and normal-weight subjects had different profiles of plasma lysophospholipids. A multivariate combination of the 26 lysophospholipids could discriminate between normal-weight and obese subjects with an accuracy of 98%. The high-fat meal challenge altered the concentration of plasma lysophosphatidylcholines in an oil treatment-dependent manner in normal-weight but not obese subjects, suggesting that obesity impairs the sensitivity of lysophospholipid metabolism to n-3 PUFAs. Noncytotoxic steatosis in HepG2 cells affected the secretion pattern of lysophospholipids, partially resembling the changes observed in the plasma of obese subjects. CONCLUSIONS Obesity has a substantial impact on lysophospholipid metabolism, altering the plasma lysophospholipid profile and abolishing its sensitivity to dietary n-3 PUFAs. These effects could contribute to the onset or progression of alterations associated with obesity, such as inflammation, insulin resistance, and fatty liver disease. This trial was registered at www.controlled-trials.com as ISRCTN96712688.
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Affiliation(s)
- Josep M Del Bas
- Nutrition and Health Research Group, Technological Center for Nutrition and Health, Tecnio, Campus of International Excellence Southern Catalonia (CEICS), Reus, Spain
| | - Antoni Caimari
- Nutrition and Health Research Group, Technological Center for Nutrition and Health, Tecnio, Campus of International Excellence Southern Catalonia (CEICS), Reus, Spain;
| | - Maria Isabel Rodriguez-Naranjo
- Nutrition and Health Research Group, Technological Center for Nutrition and Health, Tecnio, Campus of International Excellence Southern Catalonia (CEICS), Reus, Spain
| | - Caroline E Childs
- Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Carolina Paras Chavez
- Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Annette L West
- Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Elizabeth A Miles
- Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom
| | - Lluis Arola
- Nutrition and Health Research Group, Technological Center for Nutrition and Health, Tecnio, Campus of International Excellence Southern Catalonia (CEICS), Reus, Spain; Nutrigenomics Research Group, Department of Biochemistry and Biotechology, University Rovira i Virgili, Tarragona, Spain; and
| | - Philip C Calder
- Human Development and Health Academic Unit, Faculty of Medicine, University of Southampton, Southampton, United Kingdom; National Institute for Health Research Southampton Biomedical Research Centre, University Hospital Southampton National Health Service Foundation Trust and University of Southampton, Southampton, United Kingdom
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Oroxin A inhibits breast cancer cell growth by inducing robust endoplasmic reticulum stress and senescence. Anticancer Drugs 2016; 27:204-15. [DOI: 10.1097/cad.0000000000000318] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
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ROS-mediated endoplasmic reticulum stress and mitochondrial dysfunction underlie apoptosis induced by resveratrol and arsenic trioxide in A549 cells. Chem Biol Interact 2016; 245:100-9. [DOI: 10.1016/j.cbi.2016.01.005] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2015] [Revised: 11/30/2015] [Accepted: 01/02/2016] [Indexed: 12/17/2022]
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Lin P, Weng X, Liu F, Ma Y, Chen H, Shao X, Zheng W, Liu X, Ye H, Li X. Bushen Zhuangjin decoction inhibits TM-induced chondrocyte apoptosis mediated by endoplasmic reticulum stress. Int J Mol Med 2015; 36:1519-28. [PMID: 26497741 PMCID: PMC4678159 DOI: 10.3892/ijmm.2015.2387] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2015] [Accepted: 10/08/2015] [Indexed: 12/15/2022] Open
Abstract
Chondrocyte apoptosis triggered by endoplasmic reticulum (ER) stress plays a vital role in the pathogenesis of osteoarthritis (OA). Bushen Zhuangjin decoction (BZD) has been widely used in the treatment of OA. However, the cellular and molecular mechanisms responsible for the inhibitory effects of BZD on chondrocyte apoptosis remain to be elucidated. In the present study, we investigated the effects of BZD on ER stress-induced chondrocyte apoptosis using a chondrocyte in vitro model of OA. Chondrocytes obtained from the articular cartilage of the knee joints of Sprague Dawley (SD) rats were detected by immunohistochemical staining for type II collagen. The ER stress-mediated apoptosis of tunicamycin (TM)-stimulated chondrocytes was detected using 4-phenylbutyric acid (4-PBA). We found that 4-PBA inhibited TM-induced chondrocyte apoptosis, which confirmed the successful induction of chondrocyte apoptosis. BZD enhanced the viability of the TM-stimulated chondrocytes in a dose- and time-dependent manner, as shown by MTT assay. The apoptotic rate and the loss of mitochondrial membrane potential (ΔΨm) of the TM-stimulated chondrocytes treated with BZD was markedly decreased compared with those of chondrocytes not treated with BZD, as shown by 4′,6-diamidino-2-phenylindole (DAPI) staining, Annexin V-FITC binding assay and JC-1 assay. To further elucidate the mechanisms responsible for the inhibitory effects of BZD on TM-induced chondrocyte apoptosis mediated by ER stress, the mRNA and protein expression levels of binding immunoglobulin protein (Bip), X-box binding protein 1 (Xbp1), activating transcription factor 4 (Atf4), C/EBP-homologous protein (Chop), caspase-9, caspase-3, B-cell lymphoma 2 (Bcl-2) and Bcl-2-associated X protein (Bax) were measured by reverse transcription-polymerase chain reaction (RT-PCR) and western blot analysis. In the TM-stimulated chondrocytes treated with BZD, the mRNA and protein expression levels of Bip, Atf4, Chop, caspase-9, caspase-3 and Bax were significantly decreased, whereas the mRNA and protein expression levels of Xbp1 and Bcl-2 were significantly increased compared with the TM-stimulated chondrocytes not treated with BZD. Additionally, all our findings demonstrated that there was no significant difference between the TM-stimulated chondrocytes treated with BZD and those treated with 4-PBA. Taken together, our results indicate that BZD inhibits TM-induced chondrocyte apoptosis mediated by ER stress. Thus, BZD may be a potential therapeutic agent for use in the treatment of OA.
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Affiliation(s)
- Pingdong Lin
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Xiaping Weng
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Fayuan Liu
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Yuhuan Ma
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Houhuang Chen
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Xiang Shao
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Wenwei Zheng
- Fujian Key Laboratory of Integrative Medicine on Geriatrics, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Xianxiang Liu
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Hongzhi Ye
- College of Pharmacy, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
| | - Xihai Li
- Academy of Integrative Medicine, Fujian University of Traditional Chinese Medicine, Fuzhou, Fujian 350122, P.R. China
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40
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The effect of bovine rotavirus and its nonstructural protein 4 on ER stress-mediated apoptosis in HeLa and HT-29 cells. Tumour Biol 2015; 37:3155-61. [PMID: 26427658 DOI: 10.1007/s13277-015-4097-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Accepted: 09/14/2015] [Indexed: 02/08/2023] Open
Abstract
Endoplasmic reticulum (ER) plays important roles in multiple cellular processes as well as cell survival and apoptosis. Perturbation of ER functions leads to ER stress and unfolded protein response (UPR). The primary goal of this response is cell survival, but severe ER stress can trigger apoptosis signaling. In tumor cells, chronically activated UPR response provides tumor growth. So, apoptosis induced by the ER stress has been the target for anti-cancer therapy. In this in vitro study, we examined the apoptotic effect associated with ER stress of bovine rotavirus and its nonstructural protein 4 (NSP4) alone in two cancer cell lines. The plasmid pcDNA3.1 encoding NSP4 protein of bovine rotavirus transfected with lipofectamine 2000 into the HeLa and HT-29 cells for protein production. MTT, flow cytometry, and Western blot were used to evaluate the cell viability, apoptosis, and expression level of C/EBP-homologous protein (CHOP) and activated caspase-4. In parallel, the apoptotic effect of the bovine rotavirus associated with ER stress in the infected cells was examined too. The cytotoxic and apoptotic effect of NSP4 protein on the cells were statistically significant compared to the control groups. However, Western blot showed that the expression of the NSP4 protein by recombinant plasmid did not lead to high expression of CHOP and activation of caspase-4. Interestingly, rotavirus not only induced significant apoptosis but also caused an increase in CHOP expression and caspase-4 activation in the infected cells compared to control. As a result, NSP4 protein and bovine rotavirus can be considered a potential novel bio-therapeutic strategy for cancer treatment.
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Rivas A, Vidal RL, Hetz C. Targeting the unfolded protein response for disease intervention. Expert Opin Ther Targets 2015; 19:1203-18. [PMID: 26166159 DOI: 10.1517/14728222.2015.1053869] [Citation(s) in RCA: 53] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
INTRODUCTION The accumulation of misfolded proteins in the endoplasmic reticulum (ER) generates a stress condition that engages the unfolded protein response (UPR). The UPR is an adaptive reaction that aims to reestablish ER proteostasis by recovering the folding capacity of the cell. However, chronic ER stress results in apoptosis. AREAS COVERED This review focuses on discussing the emerging role of the UPR as a driver of several human pathologies including diabetes, neurodegenerative diseases and cancer. The involvement of specific UPR signaling components on different diseases is highlighted based on preclinical models and pharmacological and genetic manipulation of the pathway. EXPERT OPINION Therapeutic strategies directed to regulate the activity of different UPR signaling arms may reduce stress levels with a therapeutic gain. Recent drug discovery efforts have identified small molecules that target specific UPR components, providing protection on various disease models. However, important side effects are predicted in the chronic administration due to the fundamental role of the UPR in highly secretory organs such as liver and pancreas. To overcome these problems, we propose the use of combinatorial treatments of selected drugs with natural compounds that are known to modulate the ER proteostasis network.
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Affiliation(s)
- Alexis Rivas
- University of Chile, Biomedical Neuroscience Institute, Faculty of Medicine , Santiago , Chile
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42
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Chen S, Zhou N, Zhang Z, Li W, Zhu W. Resveratrol induces cell apoptosis in adipocytes via AMPK activation. Biochem Biophys Res Commun 2015; 457:608-13. [PMID: 25603053 DOI: 10.1016/j.bbrc.2015.01.034] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2015] [Accepted: 01/11/2015] [Indexed: 12/16/2022]
Abstract
Resveratrol is identified as polyphenolic compound with anti-inflammatory, antioxidant, anti-insulin resistance characteristics. Moreover, resveratrol exerts pro-apoptotic effects in varieties of cancer cell lines. However, effects and mechanisms of resveratrol on the regulation of adipocytes apoptosis remain largely unknown. In this study, we found that resveratrol treatment could induce cell apoptosis in murine 3T3-L1 adipocytes. Furthermore, resveratrol activated the mitochondrial apoptotic signaling pathway with the decrease in the mitochondrial membrane potential (MMP), and the activation of caspase 3. Mechanistically, we found that phosphorylation level of AMP-activated protein kinase α (AMPKα) was elevated, accompany with reduced level of phosphorylation of protein kinase B (AKT) when cells were exposed to resveratrol. By using small interfering RNAs of AMPKα and specific inhibitor for p-AKT, it was shown that activation of AMPKα could inhibit downstream of p-AKT, consequently activating mitochondrion-mediated apoptotic pathway. Additionally, we observed similar pro-apoptotic effects of Res on mouse primary adipocytes. Our findings clarified the apoptotic effects and underlying mechanisms of resveratrol in adipocytes, suggesting its potential therapeutic application in the treatment or prevention of obesity and related metabolic symptoms.
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Affiliation(s)
- Sifan Chen
- Guangzhou Center for Disease Control and Prevention, Guangzhou, Guangdong, China.
| | - Niman Zhou
- Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China
| | - Zili Zhang
- State Key Laboratory of Respiratory Diseases, Guangzhou Institute of Respiratory Disease, The First Affiliated Hospital, Guangzhou Medical University, Guangzhou, Guangdong, China
| | - Wenxue Li
- Guangzhou Center for Disease Control and Prevention, Guangzhou, Guangdong, China
| | - Wei Zhu
- Guangzhou Center for Disease Control and Prevention, Guangzhou, Guangdong, China.
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