151
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Kardos J, Héja L, Simon Á, Jablonkai I, Kovács R, Jemnitz K. Copper signalling: causes and consequences. Cell Commun Signal 2018; 16:71. [PMID: 30348177 PMCID: PMC6198518 DOI: 10.1186/s12964-018-0277-3] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2018] [Accepted: 09/24/2018] [Indexed: 12/18/2022] Open
Abstract
Copper-containing enzymes perform fundamental functions by activating dioxygen (O2) and therefore allowing chemical energy-transfer for aerobic metabolism. The copper-dependence of O2 transport, metabolism and production of signalling molecules are supported by molecular systems that regulate and preserve tightly-bound static and weakly-bound dynamic cellular copper pools. Disruption of the reducing intracellular environment, characterized by glutathione shortage and ambient Cu(II) abundance drives oxidative stress and interferes with the bidirectional, copper-dependent communication between neurons and astrocytes, eventually leading to various brain disease forms. A deeper understanding of of the regulatory effects of copper on neuro-glia coupling via polyamine metabolism may reveal novel copper signalling functions and new directions for therapeutic intervention in brain disorders associated with aberrant copper metabolism.
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Affiliation(s)
- Julianna Kardos
- Functional Pharmacology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok körútja 2, Budapest, 1117 Hungary
| | - László Héja
- Functional Pharmacology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok körútja 2, Budapest, 1117 Hungary
| | - Ágnes Simon
- Functional Pharmacology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok körútja 2, Budapest, 1117 Hungary
| | - István Jablonkai
- Functional Pharmacology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok körútja 2, Budapest, 1117 Hungary
| | - Richard Kovács
- Institute of Neurophysiology, Charité-Universitätsmedizin, Berlin, Germany
| | - Katalin Jemnitz
- Functional Pharmacology Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Hungarian Academy of Sciences, Magyar Tudósok körútja 2, Budapest, 1117 Hungary
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152
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Zhao P, Jin Z, Chen Q, Yang T, Chen D, Meng J, Lu X, Gu Z, He Q. Local generation of hydrogen for enhanced photothermal therapy. Nat Commun 2018; 9:4241. [PMID: 30315173 PMCID: PMC6185976 DOI: 10.1038/s41467-018-06630-2] [Citation(s) in RCA: 192] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 09/17/2018] [Indexed: 12/12/2022] Open
Abstract
By delivering the concept of clean hydrogen energy and green catalysis to the biomedical field, engineering of hydrogen-generating nanomaterials for treatment of major diseases holds great promise. Leveraging virtue of versatile abilities of Pd hydride nanomaterials in high/stable hydrogen storage, self-catalytic hydrogenation, near-infrared (NIR) light absorption and photothermal conversion, here we utilize the cubic PdH0.2 nanocrystals for tumour-targeted and photoacoustic imaging (PAI)-guided hydrogenothermal therapy of cancer. The synthesized PdH0.2 nanocrystals have exhibited high intratumoural accumulation capability, clear NIR-controlled hydrogen release behaviours, NIR-enhanced self-catalysis bio-reductivity, high NIR-photothermal effect and PAI performance. With these unique properties of PdH0.2 nanocrystals, synergetic hydrogenothermal therapy with limited systematic toxicity has been achieved by tumour-targeted delivery and PAI-guided NIR-controlled release of bio-reductive hydrogen as well as generation of heat. This hydrogenothermal approach has presented a cancer-selective strategy for synergistic cancer treatment.
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Affiliation(s)
- Penghe Zhao
- Guangdong Provincial Key Laboratory of Biomedicalim Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, No. 1066 Xuyuan Road, Nanshan District, Shenzhen, 518055, Guangdong, China
| | - Zhaokui Jin
- Guangdong Provincial Key Laboratory of Biomedicalim Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, No. 1066 Xuyuan Road, Nanshan District, Shenzhen, 518055, Guangdong, China
| | - Qian Chen
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- California NanoSystems Institute, Jonsson Comprehensive Cancer Center, Center for Minimally Invasive Therapeutics, University of California, Los Angeles, Los Angeles, CA, 90095, USA
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, 27695, NC, USA
| | - Tian Yang
- Guangdong Provincial Key Laboratory of Biomedicalim Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, No. 1066 Xuyuan Road, Nanshan District, Shenzhen, 518055, Guangdong, China
| | - Danyang Chen
- Guangdong Provincial Key Laboratory of Biomedicalim Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, No. 1066 Xuyuan Road, Nanshan District, Shenzhen, 518055, Guangdong, China
| | - Jin Meng
- Guangdong Provincial Key Laboratory of Biomedicalim Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, No. 1066 Xuyuan Road, Nanshan District, Shenzhen, 518055, Guangdong, China
| | - Xifeng Lu
- Guangdong Provincial Key Laboratory of Biomedicalim Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, No. 1066 Xuyuan Road, Nanshan District, Shenzhen, 518055, Guangdong, China
| | - Zhen Gu
- Department of Bioengineering, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
- California NanoSystems Institute, Jonsson Comprehensive Cancer Center, Center for Minimally Invasive Therapeutics, University of California, Los Angeles, Los Angeles, CA, 90095, USA.
- Joint Department of Biomedical Engineering, University of North Carolina at Chapel Hill and North Carolina State University, Raleigh, 27695, NC, USA.
| | - Qianjun He
- Guangdong Provincial Key Laboratory of Biomedicalim Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Health Science Center, Shenzhen University, No. 1066 Xuyuan Road, Nanshan District, Shenzhen, 518055, Guangdong, China.
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153
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Klimovich AA, Popov AM, Styshova ON, Artyukov AA, Tsybulsky AV. A Comparative Evaluation of the Actions of Different Secondary Metabolites of Marine Hydrobionts on the Redox Status of Tumor and Immune Cells. Biophysics (Nagoya-shi) 2018. [DOI: 10.1134/s000635091805010x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
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154
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Di Sotto A, Di Giacomo S, Amatore D, Locatelli M, Vitalone A, Toniolo C, Rotino GL, Lo Scalzo R, Palamara AT, Marcocci ME, Nencioni L. A Polyphenol Rich Extract from Solanum melongena L. DR2 Peel Exhibits Antioxidant Properties and Anti-Herpes Simplex Virus Type 1 Activity In Vitro. Molecules 2018; 23:E2066. [PMID: 30126139 PMCID: PMC6222547 DOI: 10.3390/molecules23082066] [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: 08/02/2018] [Revised: 08/13/2018] [Accepted: 08/14/2018] [Indexed: 12/21/2022] Open
Abstract
DR2B and DR2C extracts, obtained by ethanolic maceration of peel from commercially and physiologically ripe aubergine berries, were studied for the antioxidative cytoprotective properties and anti-HSV-1 activity, in line with the evidence that several antioxidants can impair viral replication by maintaining reducing conditions in host cells. The antioxidative cytoprotective effects against tBOOH-induced damage were assessed in Caco2 cells, while antiviral activity was studied in Vero cells; polyphenolic fingerprints were characterized by integrated phytochemical methods. Results highlighted different compositions of the extracts, with chlorogenic acid and delphinidin-3-rutinoside as the major constituents; other peculiar phytochemicals were also identified. Both samples reduced reactive oxygen species (ROS) production and exhibited scavenging and chelating properties. DR2C partly counteracted the tBOOH-induced cytotoxicity, with a remarkable lowering of lactate metabolism under both normoxia and hypoxia; interestingly, it increased intracellular GSH levels. Furthermore, DR2C inhibited the HSV-1 replication when added for 24 h after viral adsorption, as also confirmed by the reduction of many viral proteins' expression. Since DR2C was able to reduce NOX4 expression during HSV-1 infection, its antiviral activity may be correlated to its antioxidant properties. Although further studies are needed to better characterize DR2C activity, the results suggest this extract as a promising new anti-HSV-1 agent.
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Affiliation(s)
- Antonella Di Sotto
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Silvia Di Giacomo
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Donatella Amatore
- Department of Public Health and Infectious Diseases, Istituto Pasteur Italia-Fondazione Cenci-Bolognetti, Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Marcello Locatelli
- Department of Pharmacy, University "G. D'Annunzio" of Chieti-Pescara, Via dei Vestini 31, 66100 Chieti, Italy.
| | - Annabella Vitalone
- Department of Physiology and Pharmacology "V. Erspamer", Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Chiara Toniolo
- Department of Environmental Biology, Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Giuseppe Leonardo Rotino
- Research Centre for Genomics and Bioinformatics (CREA-GB), Via Paullese 28, Lodi, 26836 Montanaso Lombardo, Italy.
| | - Roberto Lo Scalzo
- Research Centre for Engineering and Agro-Food Processing (CREA-IT), Via Venezian 26, 20133 Milan, Italy.
| | - Anna Teresa Palamara
- Department of Public Health and Infectious Diseases, Istituto Pasteur Italia-Fondazione Cenci-Bolognetti, Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Maria Elena Marcocci
- Department of Public Health and Infectious Diseases, Istituto Pasteur Italia-Fondazione Cenci-Bolognetti, Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy.
| | - Lucia Nencioni
- Department of Public Health and Infectious Diseases, Istituto Pasteur Italia-Fondazione Cenci-Bolognetti, Sapienza University, P.le Aldo Moro 5, 00185 Rome, Italy.
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155
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Antiglioma via regulating oxidative stress and remodeling tumor-associated macrophage using lactoferrin-mediated biomimetic codelivery of simvastatin/fenretinide. J Control Release 2018; 287:12-23. [PMID: 30096402 DOI: 10.1016/j.jconrel.2018.08.012] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 07/22/2018] [Accepted: 08/06/2018] [Indexed: 12/13/2022]
Abstract
Effective treatment of malignant glioma still remains a formidable challenge due to lack of the effective BBB-permeable drugs and efficient brain delivery methods, and the pharmacotherapy options are very limited. Therefore, to develop an effective therapeutic strategy is a pressing need. In this work, a noncytotoxic drug combination (i.e., simvastatin and fenretinide) was revealed to be potent for treating glioma, which was co-encapsulated into a TPGS-TAT-embedded lactoferrin nanoparticle system for achieving brain-targeted biomimetic delivery via the LRP-1 receptor. It was shown that the lactoferrin nanoparticle repolarized the tumor-associated macrophages from the M2 phenotype to M1 via regulating the STAT6 pathway, as well as induced the ROS-mediated mitochondrial apoptosis by inhibiting the Ras/Raf/p-Erk pathway in the glioma cells. The antiglioma efficacy was further demonstrated in both the subcutaneous and orthotopic glioma models. The repolarization of tumor-associated macrophages not only prompted the ROS generation but also induced the innate immunity (e.g., antitumor cytokine release). This delivery and therapeutic strategy provides a novel modality for the glioma treatment.
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156
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Lee IC, Bae JS. Inhibitory Effect of Pelargonidin on Secretory Group IIA Phospholipase A2. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
The expression of secretory group IIA phospholipase A2 (sPLA2-IIA) has been shown to be elevated in various inflammatory diseases, and lipopolysaccharide (LPS) up-regulates the expression of sPLA2-IIA in human umbilical vein endothelial cells (HUVECs). Pelargonidin (PEL) is a well-known red pigment found in plants, and has been reported as having important biological activities that are potentially beneficial for human health. Here, PEL was examined for its effects on the expression and activity of sPLA2-IIA in HUVECs and mouse. Post treatment of cells or mouse with PEL inhibited LPS-induced expression and activity of sPLA2-IIA. Therefore, these results suggest that PEL inhibited LPS mediated expression of sPLA2-IIA.
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Affiliation(s)
- In-Chul Lee
- Department of Cosmetic Science and Technology, Seowon University, Cheongju 28674, Republic of Korea
| | - Jong-Sup Bae
- College of Pharmacy, CMRI, Research Institute of Pharmaceutical Sciences, BK21 Plus KNU Multi-Omics based Creative Drug Research Team, Kyungpook National University, Daegu 41566, Republic of Korea
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157
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Abstract
PURPOSE OF REVIEW Insight into the metabolic changes in cancer has become so important that cancer is regarded as a disease entity full of metabolic implications. We summarize the recent findings pertaining to cancer cell-derived metabolic changes that regulate the function of macrophages to favor cancer cell survival, and the reported approaches to reverse these changes. RECENT FINDINGS Since the observation and dramatic revitalization of the Warburg effect, metabolic changes were thought to be confined in cancer cells. However, the Warburg effect has recently been proven to exist in various types of immune cells in tumor tissue. A growing number of publications now indicate that cancer cells interact with other cells in the tumor microenvironment, not only through traditional inflammatory mediators, but also through oncometabolites, and that metabolic changes in immune cells by oncometabolites are the key factors favoring the survival of cancer cells and pro-tumoral function of immune cells. Notably, these metabolic changes do not occur uniformly in tumor progression. SUMMARY Understanding of the complex metabolic interactions in the tumor microenvironment can not only set a new paradigm for tumor progression, but also provide new breakthroughs to control cancer by modulation of function in tumor-associated macrophages.
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158
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Huynh DL, Zhang JJ, Chandimali N, Ghosh M, Gera M, Kim N, Park YH, Kwon T, Jeong DK. SALL4 suppresses reactive oxygen species in pancreatic ductal adenocarcinoma phenotype via FoxM1/Prx III axis. Biochem Biophys Res Commun 2018; 503:2248-2254. [PMID: 29958885 DOI: 10.1016/j.bbrc.2018.06.145] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Accepted: 06/26/2018] [Indexed: 12/16/2022]
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is a major malignant phenotype in pancreatic cancer, which is one of the most death causes by cancer in the world. PDAC developed from pancreatic intra-epithelial neoplasms (PanINs) and poorly diagnosed at early stages. Beside of high drug resistance, metastasis is the great concern during pancreatic cancer treatment. SALL4 expression is inherent in the upregulations of endothelial mesenchymal transition (EMT) genes and therefore promoting cancer metastasis. Furthermore, some of evidences indicated reactive oxygen species (ROS) is also influent to metastasis and self-antioxidant capacity seems a gold standard for successful metastasis rate. In this study, we have found the role Spalt like protein 4 (SALL4) to PDAC proliferation, mobility and its regulation to mitochondrial ROS via FoxM1/Prx III axis. It is possible that SALL4 mainly induces endothelial-mesenchymal transition (EMT) phenotype and favors ROS loss to facilitate metastasis efficiency in PDAC cells. Therefore, SALL4 might be a promising marker for PDAC treatment and targeting SALL4 would benefit anti-proliferative and anti-metastasis therapies.
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Affiliation(s)
- Do Luong Huynh
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju-do 63243, Republic of Korea
| | - Jiao Jiao Zhang
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju-do 63243, Republic of Korea
| | - Nisansala Chandimali
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju-do 63243, Republic of Korea
| | - Mrinmoy Ghosh
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju-do 63243, Republic of Korea
| | - Meeta Gera
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju-do 63243, Republic of Korea
| | - Nameun Kim
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju-do 63243, Republic of Korea
| | | | - Taeho Kwon
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju-do 63243, Republic of Korea; Laboratory of Animal Genetic Engineering and Stem Cell Biology, Subtropical/Tropical Organism Gene Bank, Jeju National University, Jeju-do 63243, Republic of Korea.
| | - Dong Kee Jeong
- Laboratory of Animal Genetic Engineering and Stem Cell Biology, Department of Animal Biotechnology, Faculty of Biotechnology, Jeju National University, Jeju-do 63243, Republic of Korea; Laboratory of Animal Genetic Engineering and Stem Cell Biology, Subtropical/Tropical Organism Gene Bank, Jeju National University, Jeju-do 63243, Republic of Korea.
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159
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Furlan T, Khalid S, Nguyen AV, Günther J, Troppmair J. The oxidoreductase p66Shc acts as tumor suppressor in BRAFV600E-transformed cells. Mol Oncol 2018; 12:869-882. [PMID: 29624862 PMCID: PMC5983121 DOI: 10.1002/1878-0261.12199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2017] [Revised: 02/26/2018] [Accepted: 03/14/2018] [Indexed: 12/19/2022] Open
Abstract
Metabolic reprogramming, as exemplified by the shift from oxidative phosphorylation to glycolysis, is a common feature of transformed cells. In many tumors, altered metabolism is also reflected in increased reactive oxygen species (ROS) levels, which contribute to proliferation and survival signaling. However, despite high ROS levels, cancer cells can be efficiently killed by further increasing ROS production. We have shown previously that both wild‐type and oncogenic CRAF and BRAF prevent excessive mitochondrial ROS production. Subsequently, it has been demonstrated that raising ROS levels in BRAFV600E‐transformed melanoma cells by inhibiting BRAF or MEK rendered them susceptible to cell death induction. To understand how oncogenic BRAF affects mitochondrial ROS production in melanoma, we studied the mitochondrial ROS‐producing oxidoreductase p66Shc, which is frequently overexpressed in tumors. Using NIH 3T3 BRAFV600E fibroblasts and the melanoma cell lines A375 and M238 carrying the same BRAF mutation, we show that under treatment with the ROS‐inducing agent phenethyl isothiocyanate (PEITC), oncogenic BRAF renders cells refractory to p66ShcS36 phosphorylation, which is essential for p66Shc activation and mitochondrial ROS production. Consistent with this, the activation of JNK1/2, which phosphorylate S36, was blunted, while other mitogen‐activated protein kinases were not affected. Inhibition of JNK1/2 efficiently prevented ROS production, while BRAF and MEK inhibitors increased ROS levels. Vemurafenib‐resistant M238R melanoma cells were impaired in S36 phosphorylation and ROS production following PEITC treatment. Moreover, they failed to increase ROS levels after MEK/BRAF inhibition. Finally, shRNA‐mediated knockdown of p66Shc led to increased growth of BRAFV600E‐transformed NIH 3T3 cells in soft agar assay. Taken together, these data suggest that phosphorylation‐activated p66Shc functions as a tumor suppressor in melanoma cells.
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Affiliation(s)
- Tobias Furlan
- Daniel Swarovski Research Laboratory, Department of Visceral-, Transplant- and Thoracic Surgery, Medical University of Innsbruck (MUI), Austria
| | - Sana Khalid
- Daniel Swarovski Research Laboratory, Department of Visceral-, Transplant- and Thoracic Surgery, Medical University of Innsbruck (MUI), Austria
| | - Anh-Vu Nguyen
- Daniel Swarovski Research Laboratory, Department of Visceral-, Transplant- and Thoracic Surgery, Medical University of Innsbruck (MUI), Austria
| | - Julia Günther
- Daniel Swarovski Research Laboratory, Department of Visceral-, Transplant- and Thoracic Surgery, Medical University of Innsbruck (MUI), Austria
| | - Jakob Troppmair
- Daniel Swarovski Research Laboratory, Department of Visceral-, Transplant- and Thoracic Surgery, Medical University of Innsbruck (MUI), Austria
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160
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MiR-422a regulates cellular metabolism and malignancy by targeting pyruvate dehydrogenase kinase 2 in gastric cancer. Cell Death Dis 2018; 9:505. [PMID: 29725130 PMCID: PMC5938701 DOI: 10.1038/s41419-018-0564-3] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2017] [Revised: 02/28/2018] [Accepted: 04/05/2018] [Indexed: 02/06/2023]
Abstract
Increasing evidence indicates that dysregulation of microRNAs (miRNAs) plays a crucial role in human malignancies. Here, we showed that microRNA-422a (miR-422a) expression was dramatically downregulated in gastric cancer (GC) samples and cell lines compared with normal controls, and that its expression level was inversely related to tumor size and depth of infiltration. Functional studies revealed that the overexpression of miR-422a in GC tumor cells suppressed cell proliferation and migration, and drove a metabolic shift from aerobic glycolysis to oxidative phosphorylation. Mechanistic analysis suggested that miR-422a repressed pyruvate dehydrogenase kinase 2 (PDK2) to restore activity of the pyruvate dehydrogenase (PDH), the gatekeeping enzyme that catalyzes the decarboxylation of pyruvate to produce acetyl-CoA. Importantly, we further demonstrated that the mir-422a–PDK2 axis also influenced another metabolic pathway, de novo lipogenesis in cancer cells, and that it subsequently affected reactive oxygen species (ROS) and RB phosphorylation levels, ultimately resulting in cell cycle arrest in G1 phase. Our findings show that the miR-422a–PDK2 axis is an important mediator in metabolic reprogramming and a promising therapeutic target for antitumor treatment.
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161
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Meng X, Mao Z, Li X, Zhong D, Li M, Jia Y, Wei J, Yang B, Zhou H. Baicalein decreases uric acid and prevents hyperuricemic nephropathy in mice. Oncotarget 2018; 8:40305-40317. [PMID: 28445133 PMCID: PMC5522264 DOI: 10.18632/oncotarget.16928] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2017] [Accepted: 03/24/2017] [Indexed: 12/28/2022] Open
Abstract
Baicalein, a natural flavonoid, is structurally advantageous for binding to xanthine oxidoreductase. In our study, molecular docking analysis and Surface Plasmon Resonance revealed a direct interaction between baicalein and xanthine oxidoreductase. Moreover, 50 mg/kg/d baicalein treatment significantly suppressed the viability of xanthine oxidoreductase in hyperuricemia mouse model. The data showed that baicalein remarkably prevented renal dysfunction, ameliorated kidney fibrosis, alleviated epithelial-mesenchymal transition and oxidative stress in hyperuricemia mice. Thus, we concluded that baicalein executed a kidney-protection action in hyperuricemia and therefore may be used as a therapeutic alternative for hyperuricemic nephropathy.
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Affiliation(s)
- Xiaolu Meng
- Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, 100191, P.R. China
| | - Zhuo Mao
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, P.R. China
| | - Xin Li
- Drug Clinical Trial Institution, The Affiliated Hospital of Qingdao University, Qingdao, 266003, P.R. China
| | - Dandan Zhong
- Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, 100191, P.R. China
| | - Min Li
- Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, 100191, P.R. China
| | - Yingli Jia
- Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, 100191, P.R. China
| | - Jing Wei
- Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin, 300072, P.R. China
| | - Baoxue Yang
- Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, 100191, P.R. China
| | - Hong Zhou
- Department of Pharmacology, School of Basic Medical Sciences, Peking University, Beijing, 100191, P.R. China
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162
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Morales-Prieto N, Ruiz-Laguna J, Abril N. Dietary Se supplementation partially restores the REDOX proteomic map of M. spretus liver exposed to p,p ′-DDE. Food Chem Toxicol 2018; 114:292-301. [DOI: 10.1016/j.fct.2018.02.047] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2017] [Revised: 02/14/2018] [Accepted: 02/21/2018] [Indexed: 12/29/2022]
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163
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Kim MY, Choi EO, HwangBo H, Kwon DH, Ahn KI, Kim HJ, Ji SY, Hong SH, Jeong JW, Kim GY, Park C, Choi YH. Reactive oxygen species-dependent apoptosis induction by water extract of Citrus unshiu peel in MDA-MB-231 human breast carcinoma cells. Nutr Res Pract 2018; 12:129-134. [PMID: 29629029 PMCID: PMC5886964 DOI: 10.4162/nrp.2018.12.2.129] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Revised: 11/10/2017] [Accepted: 01/29/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND/OBJECTIVES Although several recent studies have reported the anti-cancer effects of extracts or components of Citrus unshiu peel, which has been used for various purposes in traditional medicine, the molecular mechanisms for their effects remain unclear. In the present study, the anti-cancer activity of a water-soluble extract of C. unshiu peel (WECU) in MDA-MB-231 human breast carcinoma cells at the level of apoptosis induction was investigated. MATERIALS/METHODS Cytotoxicity was evaluated using the MTT assay. Apoptosis was detected using DAPI staining and flow cytometry analyses. Mitochondrial membrane potential, reactive oxygen species (ROS) assay, caspase activity and Western blotting were used to confirm the basis of apoptosis. RESULTS The results indicated that WECU-induced apoptosis was related to the activation of caspase-8, and -9, representative initiator caspases of extrinsic and intrinsic apoptosis pathways, respectively, and caspase-3 accompanied by proteolytic degradation of poly(ADP-ribose) polymerase and down-regulation of the inhibitors of apoptosis protein family members. WECU also increased the pro-apoptotic BAX to anti-apoptotic BCL-2 ratio, loss of mitochondrial membrane potential and cytochrome c release from mitochondria to cytoplasm. Furthermore, WECU provoked the generation of ROS, but the reduction of cell viability and induction of apoptosis by WECU were prevented when ROS production was blocked by antioxidant N-acetyl cysteine. CONCLUSIONS These results suggest that WECU suppressed proliferation of MDA-MB-231 cells by activating extrinsic and intrinsic apoptosis pathways in a ROS-dependent manner.
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Affiliation(s)
- Min Yeong Kim
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, 42 San, Yangjungdong, Busan 47227, Korea.,Anti-Aging Research Center, Dongeui University, Busan 47340, Korea
| | - Eun Ok Choi
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, 42 San, Yangjungdong, Busan 47227, Korea.,Anti-Aging Research Center, Dongeui University, Busan 47340, Korea
| | - Hyun HwangBo
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, 42 San, Yangjungdong, Busan 47227, Korea.,Anti-Aging Research Center, Dongeui University, Busan 47340, Korea
| | - Da He Kwon
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, 42 San, Yangjungdong, Busan 47227, Korea.,Anti-Aging Research Center, Dongeui University, Busan 47340, Korea
| | - Kyu Im Ahn
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, 42 San, Yangjungdong, Busan 47227, Korea.,Anti-Aging Research Center, Dongeui University, Busan 47340, Korea.,Laboratory of Immunobiology, Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea
| | - Hong Jae Kim
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, 42 San, Yangjungdong, Busan 47227, Korea.,Anti-Aging Research Center, Dongeui University, Busan 47340, Korea
| | - Seon Yeong Ji
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, 42 San, Yangjungdong, Busan 47227, Korea.,Anti-Aging Research Center, Dongeui University, Busan 47340, Korea
| | - Su-Hyun Hong
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, 42 San, Yangjungdong, Busan 47227, Korea.,Anti-Aging Research Center, Dongeui University, Busan 47340, Korea
| | - Jin-Woo Jeong
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, 42 San, Yangjungdong, Busan 47227, Korea.,Anti-Aging Research Center, Dongeui University, Busan 47340, Korea
| | - Gi Young Kim
- Laboratory of Immunobiology, Department of Marine Life Sciences, Jeju National University, Jeju 63243, Korea
| | - Cheol Park
- Department of Molecular Biology, College of Natural Sciences, Dongeui University, Busan 47340, Korea
| | - Yung Hyun Choi
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine, 42 San, Yangjungdong, Busan 47227, Korea.,Anti-Aging Research Center, Dongeui University, Busan 47340, Korea
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164
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Regulation of Immune Cell Functions by Metabolic Reprogramming. J Immunol Res 2018; 2018:8605471. [PMID: 29651445 PMCID: PMC5831954 DOI: 10.1155/2018/8605471] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Accepted: 01/14/2018] [Indexed: 02/07/2023] Open
Abstract
Recent findings show that the metabolic status of immune cells can determine immune responses. Metabolic reprogramming between aerobic glycolysis and oxidative phosphorylation, previously speculated as exclusively observable in cancer cells, exists in various types of immune and stromal cells in many different pathological conditions other than cancer. The microenvironments of cancer, obese adipose, and wound-repairing tissues share common features of inflammatory reactions. In addition, the metabolic changes in macrophages and T cells are now regarded as crucial for the functional plasticity of the immune cells and responsible for the progression and regression of many pathological processes, notably cancer. It is possible that metabolic changes in the microenvironment induced by other cellular components are responsible for the functional plasticity of immune cells. This review explores the molecular mechanisms responsible for metabolic reprogramming in macrophages and T cells and also provides a summary of recent updates with regard to the functional modulation of the immune cells by metabolic changes in the microenvironment, notably the tumor microenvironment.
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165
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Kumari S, Badana AK, G MM, G S, Malla R. Reactive Oxygen Species: A Key Constituent in Cancer Survival. Biomark Insights 2018; 13:1177271918755391. [PMID: 29449774 PMCID: PMC5808965 DOI: 10.1177/1177271918755391] [Citation(s) in RCA: 452] [Impact Index Per Article: 75.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2017] [Accepted: 12/30/2017] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Cancer is one of the major heterogeneous disease with high morbidity and mortality with poor prognosis. Elevated levels of reactive oxygen species (ROS), alteration in redox balance, and deregulated redox signaling are common hallmarks of cancer progression and resistance to treatment. Mitochondria contribute mainly in the generation of ROS during oxidative phosphorylation. Elevated levels of ROS have been detected in cancers cells due to high metabolic activity, cellular signaling, peroxisomal activity, mitochondrial dysfunction, activation of oncogene, and increased enzymatic activity of oxidases, cyclooxygenases, lipoxygenases, and thymidine phosphorylases. Cells maintain intracellular homeostasis by developing an immense antioxidant system including catalase, superoxide dismutase, and glutathione peroxidase. Besides these enzymes exist an important antioxidant glutathione and transcription factor Nrf2 which contribute in balancing oxidative stress. Reactive oxygen species-mediated signaling pathways activate pro-oncogenic signaling which eases in cancer progression, angiogenesis, and survival. Concomitantly, to maintain ROS homeostasis and evade cancer cell death, an increased level of antioxidant capacity is associated with cancer cells. CONCLUSIONS This review focuses the role of ROS in cancer survival pathways and importance of targeting the ROS signal involved in cancer development, which is a new strategy in cancer treatment.
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Affiliation(s)
- Seema Kumari
- Cancer Biology Lab, Department of Biochemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Anil Kumar Badana
- Cancer Biology Lab, Department of Biochemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Murali Mohan G
- Cancer Biology Lab, Department of Biochemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - Shailender G
- Cancer Biology Lab, Department of Biochemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
| | - RamaRao Malla
- Cancer Biology Lab, Department of Biochemistry, GIS, GITAM (Deemed to be University), Visakhapatnam, India
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166
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Abstract
Senescence is a durable cell cycle arrest that can be induced in response to various stress factors, such as telomere erosion, DNA damage or the aberrant activation of oncogenes. In addition to its well-established role as a stress response programme, research has revealed important physiological roles of senescence in nondisease settings, such as embryonic development, wound healing, tissue repair and ageing. Senescent cells secrete various cytokines, chemokines, matrix remodelling proteases and growth factors, a phenotype collectively referred to as the senescence-associated secretory phenotype. These factors evoke immune responses that, depending on the pathophysiological context, can either prevent or even fuel disease and tumorigenesis. Remarkably, even the gut microbiota can influence senescence in various organs. In this Review, we provide an introduction to cellular senescence, addressed particularly to gastroenterologists and hepatologists, and discuss the implications of senescence for the pathogenesis of malignant and nonmalignant gastrointestinal and hepatobiliary diseases. We conclude with an outlook on how modulation of cellular senescence might be used for therapeutic purposes.
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167
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Herroon MK, Rajagurubandara E, Diedrich JD, Heath EI, Podgorski I. Adipocyte-activated oxidative and ER stress pathways promote tumor survival in bone via upregulation of Heme Oxygenase 1 and Survivin. Sci Rep 2018; 8:40. [PMID: 29311669 PMCID: PMC5758829 DOI: 10.1038/s41598-017-17800-5] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2017] [Accepted: 11/30/2017] [Indexed: 01/26/2023] Open
Abstract
Metastatic tumor cells engage the local tumor microenvironment and activate specific pro-survival mechanisms to thrive and progress in the harsh bone marrow niche. Here we show that the major contributors to the survival of carcinoma cells that have colonized the bone marrow are the adipocyte-induced oxidative stress and ER stress pathways. We demonstrate that upon exposure to adipocyte-rich environments in vitro or in vivo, bone-trophic prostate and breast tumor cells upregulate the oxidative stress enzyme, HO-1. We also show that HO-1 levels are significantly increased in human metastatic prostate cancer tissues and that stable HO-1 overexpression in tumor cells promotes growth and invasiveness. Co-incident with the adipocyte-induced expression of HO-1, there is an upregulation of ER chaperone BIP and splicing of XBP1, indicating adipocyte-driven unfolded protein response, a process that we show to be sensitive to antioxidant treatment. Importantly, we also demonstrate that triggering of the oxidative stress and ER stress responses, or HO-1 induction by adipocyte exposure result in the activation of pro-survival pathways, involving survivin. Collectively, our findings reveal a new link between HO-1 and survivin expression in tumor cells, and provide a new insight into potentially targetable survival pathways in bone-metastatic disease.
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Affiliation(s)
- Mackenzie K Herroon
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA
| | | | - Jonathan D Diedrich
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA
- Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, USA
| | - Elisabeth I Heath
- Oncology, Wayne State University School of Medicine, Detroit, MI, USA
- Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, USA
| | - Izabela Podgorski
- Department of Pharmacology, Wayne State University School of Medicine, Detroit, MI, USA.
- Karmanos Cancer Institute, Wayne State University School of Medicine, Detroit, MI, USA.
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168
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Zhao Y, Hu X, Zuo X, Wang M. Chemopreventive effects of some popular phytochemicals on human colon cancer: a review. Food Funct 2018; 9:4548-4568. [DOI: 10.1039/c8fo00850g] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
The present review summarizes (1) the epidemiology and etiology of colon cancer, (2) generalized cancer chemoprotective mechanisms, and (3) the chemopreventive properties of some popular phytochemicals as well as some phytochemicals developed by our research group recently.
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Affiliation(s)
- Yueliang Zhao
- College of Food Science and Technology
- Shanghai Ocean University
- Shanghai
- China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai)
| | - Xiaoqian Hu
- College of Food Science and Technology
- Shanghai Ocean University
- Shanghai
- China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai)
| | - Xinyuan Zuo
- School of Petroleum and Chemical Engineering
- Dalian University of Technology
- Panjin City
- China
| | - Mingfu Wang
- College of Food Science and Technology
- Shanghai Ocean University
- Shanghai
- China
- Laboratory of Quality and Safety Risk Assessment for Aquatic Products on Storage and Preservation (Shanghai)
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169
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Wang W, Cai Q, Zhou F, Liu J, Jin X, Ni P, Lu M, Wang G, Zhang J. Impaired pentose phosphate pathway in the development of 3D MCF-7 cells mediated intracellular redox disturbance and multi-cellular resistance without drug induction. Redox Biol 2017; 15:253-265. [PMID: 29291545 PMCID: PMC5752090 DOI: 10.1016/j.redox.2017.12.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 12/06/2017] [Accepted: 12/20/2017] [Indexed: 02/06/2023] Open
Abstract
Although metabolic reprogramming and redox imbalance are widely reported to be involved in chemo-resistance in cancer treatment, much more attention was paid to anti-cancer drug induced effect. Our previous studies showed that cancer cells can develop P-gp overexpression-mediated intrinsic drug resistance in the formation of 3D MCF-7 multi-cellular layers (MCLs) without any drug induction. However, whether metabolic reprogramming and redox imbalance functioned during this progress remained unrevealed. In our present study, LC-Q/TOF-MS and GC-MS were used in combination for analysing intracellular metabolites. The contribution of pentose phosphate pathway (PPP) and its related redox status were checked by chemical interfering and silencing/over-expression of glucose-6-phosphate dehydrogenase (G6PD). The downstream products of G6PD were assayed by quantitative real-time PCR, western blot and flow cytometry. Results showed that not only G6PD expression but also G6PD activity was significantly lowered along with 3D MCF-7 cells culture time. Impaired PPP disturbed redox-cycling, generated reactive oxygen species (ROS), which triggered cell cycle arrest and caused the switch to Chk2/p53/NF-κB pathway-mediated P-gp induction. Our results provided a new attempt to associate intrinsic small molecule metabolites (impaired PPP) communicating with cell signalling pathways through disturbed intracellular redox status to elucidate multi-cellular resistance (MCR) in 3D MCF-7 cells, which improved the understanding of the mechanisms of P-gp up-regulation in MCR with metabolomic and related redox status support. Impaired pentose phosphate pathway (PPP) in the development of 3D MCF-7 cells. PPP mediated intracellular redox disturbance and multi-cellular resistance (MCR). P-gp up-regulation in MCR with metabolomics and related redox status support. Intrinsic small molecule metabolites communicating with cell signalling pathway.
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Affiliation(s)
- Wenjie Wang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, Jiangsu, China
| | - Qingyun Cai
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, Jiangsu, China
| | - Fang Zhou
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, Jiangsu, China
| | - Jiali Liu
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, Jiangsu, China
| | - Xiaoliang Jin
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, Jiangsu, China
| | - Ping Ni
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, Jiangsu, China
| | - Meng Lu
- Nanjing Drum Tower Hospital, The Affiliated Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China.
| | - Guangji Wang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, Jiangsu, China.
| | - Jingwei Zhang
- Key Lab of Drug Metabolism and Pharmacokinetics, State Key Laboratory of Natural Medicines, China Pharmaceutical University, 24 Tong Jia Xiang, Nanjing, Jiangsu, China.
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170
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Mesenchymal Stem Cells Attenuate Radiation-Induced Brain Injury by Inhibiting Microglia Pyroptosis. BIOMED RESEARCH INTERNATIONAL 2017; 2017:1948985. [PMID: 30009163 PMCID: PMC6020670 DOI: 10.1155/2017/1948985] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Accepted: 11/08/2017] [Indexed: 01/01/2023]
Abstract
Radiation-induced brain injury (RI) commonly occurs in patients who received head and neck radiotherapy. However, the mechanism of RI remains unclear. We aimed to evaluate whether pyroptosis was involved in RI and the impact of mesenchymal stem cells (MSCs) on it. BALB/c male mice (6–8 weeks) were cranially irradiated (15 Gy), and MSCs were transplanted into the bilateral cortex 2 days later; then mice were sacrificed 1 month later. Meanwhile, irradiated BV-2 microglia cells (10 Gy) were cocultured with MSCs for 24 hours. We observed that irradiated mice brains presented NLRP3 and caspase-1 activation. RT-PCR then indicated that it mainly occurred in microglia cells but not in neurons. Further, irradiated BV-2 cells showed pyroptosis and increased production of IL-18 and IL-1β. RT-PCR also demonstrated an increased expression of several inflammasome genes in irradiated BV-2 cells, including NLRP3 and AIM2. Particularly, NLRP3 was activated. Knockdown of NLRP3 resulted in decreased LDH release. Noteworthily, in vivo, MSCs transplantation alleviated radiation-induced NLRP3 and caspase-1 activation. Moreover, in vitro, MSCs could decrease caspase-1 dependent pyroptosis, NLRP3 inflammasome activation, and ROS production induced by radiation. Thus, our findings proved that microglia pyroptosis occurred in RI. MSCs may act as a potent therapeutic tool in attenuating pyroptosis.
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171
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Liao X, Huang C, Zhang D, Wang J, Li J, Jin H, Huang C. Mitochondrial catalase induces cells transformation through nucleolin-dependent Cox-2 mRNA stabilization. Free Radic Biol Med 2017; 113:478-486. [PMID: 29097213 DOI: 10.1016/j.freeradbiomed.2017.10.387] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Revised: 10/26/2017] [Accepted: 10/27/2017] [Indexed: 12/12/2022]
Abstract
It's well documented that over-production of reactive oxygen species (ROS) causes detrimental damages to cells. While a low level of ROS, such as H2O2, functions as signaling transducer and motivates cell proliferation in both cancer and non-transformed stem cells. As a double-edged sword, the direct evidence for demonstrating the function of H2O2 in the cause of tumor is barely characterized in intact cells. In our current study, we found that targeted expression of mitochondrial catalase (mCAT), but not catalase, could significantly reduce the accumulation of H2O2 in mouse epithelial JB6 Cl41 cells, consequently led to the cell malignant transformation and anchorage-independent cell growth. Further study revealed that this reduction of H2O2 resulted in the translocation of nucleolin from the cytoplasm to nuclear, and maintaining the nucleolin nuclear location status, and in turn stabilizing the cox-2 mRNA and consequently leading to a COX-2 protein upregulation, as well as malignant transforming mCAT-overexpressed Cl41 cells. Collectively, our studies here provide direct experimental evidence demonstrating a novel function and molecular mechanisms of mCAT in transforming mouse Cl41 cells, and high significance insight into understanding the beneficial aspect of H2O2 in circumventing tumor promotion and the theoretical basis for the management of H2O2 in the clinic implementation as a chemotherapeutic strategy.
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Affiliation(s)
- Xin Liao
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA; Department of Geriatrics, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China
| | - Chao Huang
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA
| | - Dongyun Zhang
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA
| | - Jingjing Wang
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA; Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Jingxia Li
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA
| | - Honglei Jin
- Zhejiang Provincial Key Laboratory for Technology & Application of Model Organisms, School of Life Sciences, Wenzhou Medical University, Wenzhou, Zhejiang 325035, China
| | - Chuanshu Huang
- Nelson Institute of Environmental Medicine, New York University, School of Medicine, Tuxedo Park, NY 10987, USA.
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172
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Kim SM, Hur DY, Hong SW, Kim JH. EBV-encoded EBNA1 regulates cell viability by modulating miR34a-NOX2-ROS signaling in gastric cancer cells. Biochem Biophys Res Commun 2017; 494:550-555. [DOI: 10.1016/j.bbrc.2017.10.095] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 10/18/2017] [Indexed: 01/18/2023]
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173
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Park JY, Kang KS, Lee HJ. Protection Effect of Cyanidin 3- O-Glucoside Against Oxidative Stress-induced HepG2 Cell Death Through Activation of Akt and Extracellular Signal-regulated Kinase Pathways. B KOREAN CHEM SOC 2017. [DOI: 10.1002/bkcs.11290] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Jun Yeon Park
- College of Korean Medicine; Gachon University; Seongnam 13120 Korea
| | - Ki Sung Kang
- College of Korean Medicine; Gachon University; Seongnam 13120 Korea
| | - Hae-Jeung Lee
- Department of Food and Nutrition, College of BioNano Technology; Gachon University; Seongnam 13120 Korea
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174
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Kwon DH, Cha HJ, Choi EO, Leem SH, Kim GY, Moon SK, Chang YC, Yun SJ, Hwang HJ, Kim BW, Kim WJ, Choi YH. Schisandrin A suppresses lipopolysaccharide-induced inflammation and oxidative stress in RAW 264.7 macrophages by suppressing the NF-κB, MAPKs and PI3K/Akt pathways and activating Nrf2/HO-1 signaling. Int J Mol Med 2017; 41:264-274. [PMID: 29115385 PMCID: PMC5746320 DOI: 10.3892/ijmm.2017.3209] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Accepted: 10/19/2017] [Indexed: 12/15/2022] Open
Abstract
Schisandrin A is a bioactive lignan occurring in the fruits of plants of the Schisandra genus that have traditionally been used in Korea for treating various inflammatory diseases. Although the anti-inflammatory and antioxidant effects of lignan analogues similar to schisandrin A have been reported, the underlying molecular mechanisms have remained elusive. In the present study, schisandrin A significantly suppressed the lipopolysaccharide (LPS)-induced production of the key pro-inflammatory mediators nitric oxide (NO) and prostaglandin E2 by suppressing the expression of inducible NO synthase and cyclooxygenase-2 at the mRNA and protein levels in RAW 264.7 macrophages. Furthermore, schisandrin A was demonstrated to reduce the LPS-induced secretion of pro-inflammatory cytokines, including tumor necrosis factor-α and interleukin-1β; this was accompanied by a simultaneous decrease in the respective mRNA and protein levels in the macrophages. In addition, the LPS- induced translocation of nuclear factor-κB (NF-κB), as well as activation of mitogen-activated protein kinases (MAPKs) and phosphatidylinositol‑3 kinase (PI3K)/Akt pathways were inhibited by schisandrin A. Furthermore, schisandrin A significantly diminished the LPS-stimulated accumulation of intracellular reactive oxygen species, and effectively enhanced the expression of NF erythroid 2-related factor 2 (Nrf2) and heme oxygenase-1 (HO-1). These results suggested that schisandrin A has a protective effect against LPS-induced inflammatory and oxidative responses in RAW 264.7 cells by inhibiting the NF-κB, MAPK and PI3K/Akt pathways; these effects are mediated, at least in part, by the activation of the Nrf2/HO-1 pathway. Based on these results, it is concluded that schisandrin A may have therapeutic potential for treating inflammatory and oxidative disorders caused by over-activation of macrophages.
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Affiliation(s)
- Da Hye Kwon
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Hee-Jae Cha
- Department of Parasitology and Genetics, Kosin University College of Medicine, Busan 49267, Republic of Korea
| | - Eun Ok Choi
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 47227, Republic of Korea
| | - Sun-Hee Leem
- Department of Biological Science, College of Natural Sciences, Dong-A University, Busan 49315, Republic of Korea
| | - Gi-Young Kim
- Laboratory of Immunobiology, Department of Marine Life Sciences, Jeju National University, Jeju 63243, Republic of Korea
| | - Sung-Kwon Moon
- Department of Food and Nutrition, College of Biotechnology and Natural Resource, Chung-Ang University, Anseong 17546, Republic of Korea
| | - Young-Chae Chang
- Research Institute of Biomedical Engineering and Department of Medicine, Catholic University of Daegu School of Medicine, Daegu 42472, Republic of Korea
| | - Seok-Joong Yun
- Personalized Tumor Engineering Research Center, Department of Urology, Chungbuk National University College of Medicine, Cheongju 28644, Republic of Korea
| | - Hye Jin Hwang
- Department of Food and Nutrition, College of Nursing, Healthcare Sciences and Human Ecology, Dongeui University, Busan 47340, Republic of Korea
| | - Byung Woo Kim
- Department of Life Science and Biotechnology, College of Engineering, Dongeui University, Busan 47340, Republic of Korea
| | - Wun-Jae Kim
- Personalized Tumor Engineering Research Center, Department of Urology, Chungbuk National University College of Medicine, Cheongju 28644, Republic of Korea
| | - Yung Hyun Choi
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 47227, Republic of Korea
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175
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Ahn KI, Choi EO, Kwon DH, HwangBo H, Kim MY, Kim HJ, Ji SY, Hong SH, Jeong JW, Park C, Kim ND, Kim WJ, Choi YH. Induction of apoptosis by ethanol extract of Citrus unshiu Markovich peel in human bladder cancer T24 cells through ROS-mediated inactivation of the PI3K/Akt pathway. Biosci Trends 2017; 11:565-573. [PMID: 29070760 DOI: 10.5582/bst.2017.01218] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Citrus unshiu peel has been used to prevent and treat various diseases in traditional East-Asian medicine including in Korea. Extracts of C. unshiu peel are known to have various pharmacological effects including antioxidant, anti-inflammatory, and antibacterial properties. Although the possibility of their anti-cancer activity has recently been reported, the exact mechanisms in human cancer cells have not been sufficiently studied. In this study, the inhibitory effect of ethanol extract of C. unshiu peel (EECU) on the growth of human bladder cancer T24 cells was evaluated and the underlying mechanism was investigated. The present study demonstrated that the suppression of T24 cell viability by EECU is associated with apoptosis induction. EECU-induced apoptosis was found to correlate with an activation of caspase-8, -9, and -3 in concomitance with a decrease in the expression of the inhibitor of apoptosis family of proteins and an increase in the Bax:Bcl-2 ratio accompanied by the proteolytic degradation of poly(ADP-ribose) polymerase. EECU also increased the generation of reactive oxygen species (ROS), collapse of mitochondrial membrane potential, and cytochrome c release to the cytosol, along with a truncation of Bid. In addition, EECU inactivated phosphatidylinositol 3-kinase (PI3K) as well as Akt, a downstream molecular target of PI3K, and LY294002, a specific PI3K inhibitor significantly enhanced EECU-induced apoptosis and cell viability reduction. However, N-acetyl cysteine, a general ROS scavenger, completely reversed the EECU-induced dephosphorylation of PI3K and Akt, as well as cell apoptosis. Taken together, these findings suggest that EECU inhibits T24 cell proliferation by activating intrinsic and extrinsic apoptosis pathways through a ROS-mediated inactivation of the PI3K/Akt pathway.
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Affiliation(s)
- Kyu Im Ahn
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine.,Anti-Aging Research Center, Dongeui University.,Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention, Pusan National University
| | - Eun Ok Choi
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine.,Anti-Aging Research Center, Dongeui University
| | - Da He Kwon
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine.,Anti-Aging Research Center, Dongeui University
| | - Hyun HwangBo
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine.,Anti-Aging Research Center, Dongeui University
| | - Min Yeong Kim
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine.,Anti-Aging Research Center, Dongeui University
| | - Hong Jae Kim
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine.,Anti-Aging Research Center, Dongeui University
| | - Seon Yeong Ji
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine.,Anti-Aging Research Center, Dongeui University
| | - Su-Hyun Hong
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine.,Anti-Aging Research Center, Dongeui University
| | - Jin-Woo Jeong
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine.,Anti-Aging Research Center, Dongeui University
| | - Cheol Park
- Department of Molecular Biology, College of Natural Sciences, Dongeui University
| | - Nam Deuk Kim
- Department of Pharmacy, Molecular Inflammation Research Center for Aging Intervention, Pusan National University
| | - Wun Jae Kim
- Personalized Tumor Engineering Research Center, Department of Urology, Chungbuk National University College of Medicine
| | - Yung Hyun Choi
- Open Laboratory for Muscular and Skeletal Disease, and Department of Biochemistry, Dongeui University College of Korean Medicine.,Anti-Aging Research Center, Dongeui University
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176
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Sharma C, Wang HX, Li Q, Knoblich K, Reisenbichler ES, Richardson AL, Hemler ME. Protein Acyltransferase DHHC3 Regulates Breast Tumor Growth, Oxidative Stress, and Senescence. Cancer Res 2017; 77:6880-6890. [PMID: 29055014 DOI: 10.1158/0008-5472.can-17-1536] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/29/2017] [Accepted: 10/17/2017] [Indexed: 01/03/2023]
Abstract
DHHC-type protein acyltransferases may regulate the localization, stability, and/or activity of their substrates. In this study, we show that the protein palmitoyltransferase DHHC3 is upregulated in malignant and metastatic human breast cancer. Elevated expression of DHHC3 correlated with diminished patient survival in breast cancer and six other human cancer types. ZDHHC3 ablation in human MDA-MB-231 mammary tumor cell xenografts reduced the sizes of both the primary tumor and metastatic lung colonies. Gene array data and fluorescence dye assays documented increased oxidative stress and senescence in ZDHHC3-ablated cells. ZDHHC3-ablated tumors also showed enhanced recruitment of innate immune cells (antitumor macrophages, natural killer cells) associated with clearance of senescent tumors. These antitumor effects were reversed upon reconstitution with wild-type, but not enzyme-active site-deficient DHHC3. Concomitant ablation of the upregulated oxidative stress protein TXNIP substantially negated the effects of ZDHHC3 depletion on oxidative stress and senescence. Diminished DHHC3-dependent palmitoylation of ERGIC3 protein likely played a key role in TXNIP upregulation. In conclusion, DHHC3-mediated protein palmitoylation supports breast tumor growth by modulating cellular oxidative stress and senescence. Cancer Res; 77(24); 6880-90. ©2017 AACR.
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Affiliation(s)
- Chandan Sharma
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Department of Pathology, Harvard Medical School, Boston, Massachusetts
| | - Hong-Xing Wang
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Department of Pathology, Harvard Medical School, Boston, Massachusetts
| | - Qinglin Li
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Department of Pathology, Harvard Medical School, Boston, Massachusetts
| | - Konstantin Knoblich
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Department of Pathology, Harvard Medical School, Boston, Massachusetts
| | - Emily S Reisenbichler
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Department of Pathology, Harvard Medical School, Boston, Massachusetts
| | - Andrea L Richardson
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Department of Pathology, Harvard Medical School, Boston, Massachusetts
| | - Martin E Hemler
- Department of Cancer Immunology and Virology, Dana-Farber Cancer Institute and Department of Pathology, Harvard Medical School, Boston, Massachusetts.
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177
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Zhang Y, Guo Y, Wang M, Dong H, Zhang J, Zhang L. Quercetrin from Toona sinensis leaves induces cell cycle arrest and apoptosis via enhancement of oxidative stress in human colorectal cancer SW620 cells. Oncol Rep 2017; 38:3319-3326. [PMID: 29039609 PMCID: PMC5783577 DOI: 10.3892/or.2017.6042] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2017] [Accepted: 09/15/2017] [Indexed: 12/14/2022] Open
Abstract
Finding effective strategies against colorectal cancer (CRC) is still an emergent health problem. In the present study, we investigated the anticancer activity of quercetrin from Toona sinensis leaves (QTL) and explored the underlying mechanism in human CRC cell line SW620. The cells were treated with various concentrations of QTL and the cytotoxic effects of QTL were determined using the MTT assay. Apoptosis and cell cycle status were detected by flow cytometry. Reactive oxygen species (ROS) levels and mitochondrial membrane potential (∆Ψm) were assessed using DCF-DA and JC-1 fluorescence spectrophotometry, respectively. Western blot analysis was used to quantify the expression of apoptosis-related proteins. RT-PCR was applied to determine the mRNA levels of glutathione peroxidase (GPx) and catalase (CAT). QTL exhibited growth inhibitory effects and caused cell cycle arrest in the G2/M phase, which was accompanied by increased expression of p53 and p21 proteins. QTL promoted apoptosis which was consistent with the upregulated expression of Bax, cytochrome c, caspase-9, Apaf-1 and caspase-3. In addition, QTL induced the loss of mitochondrial membrane potential and triggered ROS generation, as revealed by the downregulated mRNA expression and enzymatic activity of GPx and CAT. Furthermore, both N-acetyl cysteine (NAC) and GSH attenuated the QTL-induced growth inhibition observed in SW620 cells along with the increase of ROS levels. These findings revealed that QTL inhibited the growth of CRC cells and facilitated apoptosis by enhancing oxidative stress. QTL may therefore have potential for use in CRC chemotherapy.
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Affiliation(s)
- Yali Zhang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R. China
| | - Yucheng Guo
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R. China
| | - Mimi Wang
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R. China
| | - Huanhuan Dong
- Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, P.R. China
| | - Jingfang Zhang
- College of Forestry, Northwest A&F University, Yangling, Shaanxi 712100, P.R. China
| | - Liyu Zhang
- Shaanxi Institute of Pediatric Diseases, Xi'an Children's Hospital, Xi'an, Shaanxi 710049, P.R. China
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178
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Chocry M, Leloup L, Kovacic H. Reversion of resistance to oxaliplatin by inhibition of p38 MAPK in colorectal cancer cell lines: involvement of the calpain / Nox1 pathway. Oncotarget 2017; 8:103710-103730. [PMID: 29262595 PMCID: PMC5732761 DOI: 10.18632/oncotarget.21780] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2017] [Accepted: 09/21/2017] [Indexed: 12/19/2022] Open
Abstract
Oxaliplatin is a major treatment for metastatic colorectal cancer, however its effectiveness is greatly diminished by the development of resistances. Our previous work has shown that oxaliplatin efficacy depends on the reactive oxygen species (ROS) produced by Nox1. In this report, we investigated Nox1 involvement in the survival mechanisms of oxaliplatin resistant cell lines that we have selected. Our results show that basal ROS production by Nox1 is increased in resistant cells. Whereas the transitory Nox1-dependent production of superoxide contributes to the cytotoxicity of oxaliplatin in sensitive cells, oxaliplatin treatment of resistant cells leads to a decrease in the production of superoxide associated with an increase of H2O2 and a decreased cytotoxicity of oxaliplatin. We have shown that calpains regulate differently Nox1 according to the sensitivity of the cells to oxaliplatin. In sensitive cells, calpains inhibit Nox1 by cleaving NoxA1 leading to a transient ROS production necessary for oxaliplatin cytotoxic effects. In contrast, in resistant cells calpain activation is associated with an increase of Nox1 activity through Src kinases, inducing a strong and maintained ROS production responsible for cell survival. Using a kinomic study we have shown that this overactivation of Nox1 results in an increase of p38 MAPK activity allowing the resistant cells to escape apoptosis. Our results show that the modulation of Nox1 activity in the context of anticancer treatment remains complex. However, a strategy to maximize Nox1 activation while inhibiting the p38 MAPK-dependent escape routes appears to be an option of choice to optimize oxaliplatin efficiency.
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Affiliation(s)
- Mathieu Chocry
- Aix-Marseille Université, INSERM, CRO2 UMR_S 911, Marseille 13385, France
| | - Ludovic Leloup
- Aix-Marseille Université, INSERM, CRO2 UMR_S 911, Marseille 13385, France
| | - Hervé Kovacic
- Aix-Marseille Université, INSERM, CRO2 UMR_S 911, Marseille 13385, France
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179
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3-Bromo-4,5-dihydroxybenzaldehyde Enhances the Level of Reduced Glutathione via the Nrf2-Mediated Pathway in Human Keratinocytes. Mar Drugs 2017; 15:md15090291. [PMID: 28926995 PMCID: PMC5618430 DOI: 10.3390/md15090291] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 08/23/2017] [Accepted: 09/15/2017] [Indexed: 01/03/2023] Open
Abstract
A natural bromophenol found in seaweeds, 3-bromo-4,5-dihydroxybenzaldehyde (BDB), has been shown to possess antioxidant effects. This study aimed to investigate the mechanism by which BDB protects skin cells subjected to oxidative stress. The effect of BDB on the protein and mRNA levels of glutathione-related enzymes and the cell survival of human keratinocytes (HaCaT cells) was investigated. BDB treatment increased the protein and mRNA levels of glutathione synthesizing enzymes and enhanced the production of reduced glutathione in HaCaT cells. Furthermore, BDB activated NF-E2-related factor 2 (Nrf2) and promoted its localization into the nucleus by phosphorylating its up-stream signaling proteins, extracellular signal–regulated kinase and protein kinase B. Thus, BDB increased the production of reduced glutathione and established cellular protection against oxidative stress via an Nrf2-mediated pathway.
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180
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Riffle S, Hegde RS. Modeling tumor cell adaptations to hypoxia in multicellular tumor spheroids. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2017; 36:102. [PMID: 28774341 PMCID: PMC5543535 DOI: 10.1186/s13046-017-0570-9] [Citation(s) in RCA: 106] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/13/2017] [Accepted: 07/18/2017] [Indexed: 12/17/2022]
Abstract
Under hypoxic conditions, tumor cells undergo a series of adaptations that promote evolution of a more aggressive tumor phenotype including the activation of DNA damage repair proteins, altered metabolism, and decreased proliferation. Together these changes mitigate the negative impact of oxygen deprivation and allow preservation of genomic integrity and proliferative capacity, thus contributing to tumor growth and metastasis. As a result the presence of a hypoxic microenvironment is considered a negative clinical feature of many solid tumors. Hypoxic niches in tumors also represent a therapeutically privileged environment in which chemo- and radiation therapy is less effective. Although the negative impact of tumor hypoxia has been well established, the precise effect of oxygen deprivation on tumor cell behavior, and the molecular signals that allow a tumor cell to survive in vivo are poorly understood. Multicellular tumor spheroids (MCTS) have been used as an in vitro model for the avascular tumor niche, capable of more accurately recreating tumor genomic profiles and predicting therapeutic response. However, relatively few studies have used MCTS to study the molecular mechanisms driving tumor cell adaptations within the hypoxic tumor environment. Here we will review what is known about cell proliferation, DNA damage repair, and metabolic pathways as modeled in MCTS in comparison to observations made in solid tumors. A more precise definition of the cell populations present within 3D tumor models in vitro could better inform our understanding of the heterogeneity within tumors as well as provide a more representative platform for the testing of therapeutic strategies.
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Affiliation(s)
- Stephen Riffle
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA
| | - Rashmi S Hegde
- Division of Developmental Biology, Cincinnati Children's Hospital Medical Center, University of Cincinnati College of Medicine, 3333 Burnet Avenue, Cincinnati, OH, 45229, USA.
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181
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Choi YH. Diallyl trisulfide induces apoptosis and mitotic arrest in AGS human gastric carcinoma cells through reactive oxygen species-mediated activation of AMP-activated protein kinase. Biomed Pharmacother 2017; 94:63-71. [PMID: 28753455 DOI: 10.1016/j.biopha.2017.07.055] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Revised: 07/01/2017] [Accepted: 07/11/2017] [Indexed: 01/08/2023] Open
Abstract
Diallyl trisulfide (DATS), one of the principal constituents of garlic oil, is a kind of organosulfur compound with high anti-cancer activity. Although inhibition of cancer cell proliferation by DATS is known to be associated with the induction of apoptosis and cell cycle arrest related to reactive oxygen species (ROS) production, it is still necessary to study the detailed mechanisms. In this study, we investigated the role of ROS on the activation of AMP-activated protein kinase (AMPK) in DATS-induced apoptosis and cell cycle arrest in AGS human gastric carcinoma cells. The results of the present study indicate that DATS inhibited proliferation of AGS cells by promoting apoptosis, and accumulating cellular portion of G2/M phase via the induction of cyclin B1 and cyclin-dependent kinase p21(WAF1/CIP1). The phosphorylation of histone H3 was also markedly increased following treatment with DATS, revealing that DATS stimulated a mitotic arrest, not the G2 phase. Furthermore, we found that DATS concurrently induced phosphorylation of AMPK; however, chemical inhibition of AMPK by compound C, an AMPK inhibitor, significantly blocked apoptosis induced by DATS, suggesting that DATS induces cytotoxicity of AGS cells through the AMPK-dependent pathway. Moreover, DATS provoked intracellular ROS generation and the loss of mitochondrial membrane potential, and in particular, when ROS production was blocked by antioxidant N-acety-l-cysteine, both AMPK activation and growth inhibition by DATS were completely abolished. Collectively, these findings suggest that DATS inhibited growth of AGS cells, which was mediated by complex interplay between cellular mechanisms governing redox homeostasis, apoptosis, and cell cycle arrest, through a ROS-dependent activation of AMPK pathway.
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Affiliation(s)
- Yung Hyun Choi
- Department of Biochemistry, Dongeui University College of Korean Medicine, Busan 47227, Republic of Korea; Anti-Aging Research Center & Blue-Bio Industry RIC, Dongeui University, Busan 47340, Republic of Korea.
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182
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Oxidative Stress Gene Expression Profile Correlates with Cancer Patient Poor Prognosis: Identification of Crucial Pathways Might Select Novel Therapeutic Approaches. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:2597581. [PMID: 28770020 PMCID: PMC5523271 DOI: 10.1155/2017/2597581] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 05/30/2017] [Indexed: 12/17/2022]
Abstract
The role of altered redox status and high reactive oxygen species (ROS) is still controversial in cancer development and progression. Intracellular levels of ROS are elevated in cancer cells suggesting a role in cancer initiation and progression; on the contrary, ROS elevated levels may induce programmed cell death and have been associated with cancer suppression. Thus, it is crucial to consider the double-face of ROS, for novel therapeutic strategies targeting redox regulatory mechanisms. In this review, in order to derive cancer-type specific oxidative stress genes' profile and their potential prognostic role, we integrated a publicly available oxidative stress gene signature with patient survival data from the Cancer Genome Atlas database. Overall, we found several genes statistically significant associated with poor prognosis in the examined six tumor types. Among them, FoxM1 and thioredoxin reductase1 expression showed the same pattern in four out of six cancers, suggesting their specific critical role in cancer-related oxidative stress adaptation. Our analysis also unveiled an enriched cellular network, highlighting specific pathways, in which many genes are strictly correlated. Finally, we discussed novel findings on the correlation between oxidative stress and cancer stem cells in order to define those pathways to be prioritized in drug development.
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183
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Park JE, Piao MJ, Kang KA, Shilnikova K, Hyun YJ, Oh SK, Jeong YJ, Chae S, Hyun JW. A Benzylideneacetophenone Derivative Induces Apoptosis of Radiation-Resistant Human Breast Cancer Cells via Oxidative Stress. Biomol Ther (Seoul) 2017; 25:404-410. [PMID: 28554201 PMCID: PMC5499619 DOI: 10.4062/biomolther.2017.010] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2017] [Revised: 02/24/2017] [Accepted: 03/09/2017] [Indexed: 12/14/2022] Open
Abstract
Benzylideneacetophenone derivative (1E)-1-(4-hydroxy-3-methoxyphenyl) hept-1-en-3-one (JC3) elicited cytotoxic effects on MDA-MB 231 human breast cancer cells-radiation resistant cells (MDA-MB 231-RR), in a dose-dependent manner, with an IC50 value of 6 μM JC3. JC3-mediated apoptosis was confirmed by increase in sub-G1 cell population. JC3 disrupted the mitochondrial membrane potential, and reduced expression of anti-apoptotic B cell lymphoma-2 protein, whereas it increased expression of pro-apoptotic Bcl-2-associated X protein, leading to the cleavage of caspase-9, caspase-3 and poly (ADP-ribose) polymerase. In addition, JC3 activated mitogen-activated protein kinases, and specific inhibitors of these kinases abrogated the JC3-induced increase in apoptotic bodies. JC3 increased the level of intracellular reactive oxygen species and enhanced oxidative macromolecular damage via lipid peroxidation, protein carbonylation, and DNA strand breakage. Considering these findings, JC3 is an effective therapy against radiation-resistant human breast cancer cells.
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Affiliation(s)
- Jeong Eon Park
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 63243, Republic of Korea
| | - Mei Jing Piao
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 63243, Republic of Korea
| | - Kyoung Ah Kang
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 63243, Republic of Korea
| | - Kristina Shilnikova
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 63243, Republic of Korea
| | - Yu Jae Hyun
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 63243, Republic of Korea
| | - Sei Kwan Oh
- Department of Neuroscience, College of Medicine, Ewha Womans University, Seoul 03760, Republic of Korea
| | - Yong Joo Jeong
- Department of Bio and Nanochemistry, Kookmin University, Seoul 02707, Republic of Korea
| | - Sungwook Chae
- Aging Research Center, Korea Institute of Oriental Medicine, Daejeon 34054, Republic of Korea
| | - Jin Won Hyun
- School of Medicine and Institute for Nuclear Science and Technology, Jeju National University, Jeju 63243, Republic of Korea
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184
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Zhao X, Dong W, Gao Y, Shin DS, Ye Q, Su L, Jiang F, Zhao B, Miao J. Novel indolyl-chalcone derivatives inhibit A549 lung cancer cell growth through activating Nrf-2/HO-1 and inducing apoptosis in vitro and in vivo. Sci Rep 2017. [PMID: 28634389 PMCID: PMC5478673 DOI: 10.1038/s41598-017-04411-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Increasing evidence indicates that Nrf-2, named the nuclear factor-erythroid 2-related factor, may perform anticancer function. In this study, a series of novel substituted phenyl- (3-methyl-1H-indol-2-yl)-prop-2-en-1-one (indolyl-chalcone) derivatives were synthesized and their effects on Nrf-2 activity were observed. We found that compounds 3a-3d and 6c elevated Nrf-2 activity. Then we evaluated their anticancer activities in vitro and in vivo by utilizing human lung cancer cell line A549. The in vitro results showed that among the compounds, 3d performed effectively anti-growth activity by inducing A549 lung cancer cell apoptosis and activating Nrf-2/HO-1 (heme oxygenase-1) pathway. In vivo, we proved that compound 3d inhibited the tumor growth effectively through inducing cell apoptosis without affecting CAM normal angiogenesis. These data suggest that our discovery of a novel Nrf-2 activator compound 3d would provide a new point of human lung cancer treatment.
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Affiliation(s)
- Xuan Zhao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, 250100, China
| | - WenLiang Dong
- Department of Chemistry, Changwon National University, Changwon, 51140, South Korea
| | - YuanDi Gao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, 250100, China
| | - Dong-Shoo Shin
- Department of Chemistry, Changwon National University, Changwon, 51140, South Korea
| | - Qing Ye
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan, 250012, China
| | - Le Su
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, 250100, China
| | - Fan Jiang
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan, 250012, China
| | - BaoXiang Zhao
- Institute of Organic Chemistry, School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China.
| | - JunYing Miao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology, School of Life Science, Shandong University, Jinan, 250100, China. .,The Key Laboratory of Cardiovascular Remodeling and Function Research, Chinese Ministry of Education and Chinese Ministry of Health, Qilu Hospital, Shandong University, Jinan, 250012, China.
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185
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Fu S, Li L, Kang H, Yang X, Men S, Shen Y. Chronic mitochondrial calcium elevation suppresses leaf senescence. Biochem Biophys Res Commun 2017; 487:672-677. [PMID: 28442347 DOI: 10.1016/j.bbrc.2017.04.113] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 04/20/2017] [Indexed: 12/24/2022]
Abstract
Mitochondria Ca2+ overload has long been recognized as a cell death trigger. Unexpectedly, we demonstrated a signaling complex composed of Calmodulin (CaM), Arabidopsis thaliana Bcl-2-associated athanogene 5 (AtBAG5) and Heat-shock cognate 70 protein (Hsc70) within Arabidopsis thaliana mitochondria which transduces mitochondria Ca2+ elevations to suppress leaf senescence. Gain- and loss-of-function AtBAG5 mutant plants revealed that, mitochondria Ca2+ elevation significantly increase chlorophyll retention and decrease H2O2 level in dark-induced leaf senescence assay. Based on our findings, we proposed a molecular mechanism in which chronic mitochondria Ca2+ elevation reduced ROS levels and thus inhibits leaf senescence.
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Affiliation(s)
- Shijuan Fu
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, 94 Weijin Road, Tianjin 300071, China; College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Luhua Li
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, 94 Weijin Road, Tianjin 300071, China; College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Huimin Kang
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, 94 Weijin Road, Tianjin 300071, China; College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Xue Yang
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, 94 Weijin Road, Tianjin 300071, China.
| | - Shuzhen Men
- College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin 300071, China.
| | - Yuequan Shen
- State Key Laboratory of Medicinal Chemical Biology, Nankai University, 94 Weijin Road, Tianjin 300071, China; College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin 300071, China; Synergetic Innovation Center of Chemical Science and Engineering, 94 Weijin Road, Tianjin 300071, China.
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186
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Gao Y, Ma H, Qu G, Su L, Ye Q, Jiang F, Zhao B, Miao J. A hydrogen sulfide probe activates Nrf2, inhibits cancer cell growth and induces cell apoptosis. RSC Adv 2017. [DOI: 10.1039/c7ra06501a] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Application of a probe for hydrogen sulfide, HF-NBD.
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Affiliation(s)
- YuanDi Gao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100
- China
| | - HanLin Ma
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100
- China
| | - GuoJing Qu
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100
- China
| | - Le Su
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100
- China
| | - Qing Ye
- The Key Laboratory of Cardiovascular Remodeling and Function Research
- Chinese Ministry of Education and Chinese Ministry of Health
- Qilu Hospital
- Shandong University
- Jinan
| | - Fan Jiang
- The Key Laboratory of Cardiovascular Remodeling and Function Research
- Chinese Ministry of Education and Chinese Ministry of Health
- Qilu Hospital
- Shandong University
- Jinan
| | - BaoXiang Zhao
- Institute of Organic Chemistry
- School of Chemistry and Chemical Engineering
- Shandong University
- Jinan 250100
- China
| | - JunYing Miao
- Shandong Provincial Key Laboratory of Animal Cells and Developmental Biology
- School of Life Science
- Shandong University
- Jinan 250100
- China
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