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Song P, Li X, Chen S, Gong Y, Zhao J, Jiao Y, Dai Y, Yang H, Qian J, Li Y, He J, Tang L. YTHDF1 mediates N-methyl-N-nitrosourea-induced gastric carcinogenesis by controlling HSPH1 translation. Cell Prolif 2024; 57:e13619. [PMID: 38444279 PMCID: PMC11216948 DOI: 10.1111/cpr.13619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 02/03/2024] [Accepted: 02/07/2024] [Indexed: 03/07/2024] Open
Abstract
YT521-B homology (YTH) domain family (YTHDF) proteins serve as readers that directly recognise m6A modifications. In this study, we aim to probe the role of YTHDF1 in environmental carcinogen-induced malignant transformation of gastric cells and gastric cancer (GC) carcinogenesis. We established a long-term low-dose MNU-induced malignant transformation model in gastric epithelial cells. In vivo and in vitro experiments were conducted to validate the malignant phenotype and characterise the roles of YTHDF1 and its downstream genes in malignant transformation cells. Additionally, we explored downstream m6A modification targets of YTHDF1 using RNA-sequencing, RNA immunoprecipitation, and proteomics analyses, and conducted validation experiments in cell experiments and clinical samples. Long-term low-dose exposure of MNU converted normal Gges-1 cells into malignant cells. YTHDF1 mRNA and protein expression are increased in MNU-induced malignant cells (p<0.001). Meanwhile, YTHDF1 knockdown inhibits the malignant potential of MNU-treated cells (p<0.01). YTHDF1 knockdown specifically suppresses HSPH1 protein, but not RNA levels. RIP-qPCR validates HSPH1 is the target of YTHDF1 (p<0.01). HSPH1 knockdown impairs the malignant potential of MNU-induced transformed cells. The increased expression of the key regulatory factor YTHDF1 in MNU-induced gastric carcinogenesis affects malignant transformation and tumorigenesis by regulating the translation of downstream HSPH1. These findings provide new potential targets for preventing and treating environmental chemical-induced gastric carcinogenesis.
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Affiliation(s)
- Peng Song
- Department of Gastrointestinal SurgeryThe Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical UniversityChangzhouChina
| | - Xiang Li
- Nanjing Drum Tower Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
| | - Shuai Chen
- Department of Gastrointestinal SurgeryThe Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical UniversityChangzhouChina
| | - Yu Gong
- Department of Gastrointestinal SurgeryThe Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical UniversityChangzhouChina
| | - Jie Zhao
- Department of Gastrointestinal SurgeryThe Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical UniversityChangzhouChina
| | - Yuwen Jiao
- Department of Gastrointestinal SurgeryThe Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical UniversityChangzhouChina
| | - Yi Dai
- Department of Gastrointestinal SurgeryThe Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical UniversityChangzhouChina
| | - Haojun Yang
- Department of Gastrointestinal SurgeryThe Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical UniversityChangzhouChina
| | - Jun Qian
- Department of Gastrointestinal SurgeryThe Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical UniversityChangzhouChina
| | - Yuan Li
- The Collaborative Innovation Center for Cancer Personalized Medicine, School of Public HealthNanjing Medical UniversityNanjingChina
- The Key Laboratory of Modern Toxicology, Ministry of Education, School of Public HealthNanjing Medical UniversityNanjingChina
| | - Jian He
- Nanjing Drum Tower Hospital, Affiliated Hospital of Medical SchoolNanjing UniversityNanjingChina
| | - Liming Tang
- Department of Gastrointestinal SurgeryThe Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical UniversityChangzhouChina
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2
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Ogbodo UC, Balogun TA, Omoboyede V. Integrated computational approach identifies potential inhibitors of ASK1-(JNK/P38) interaction signaling: new insights into cancer therapeutics. J Biomol Struct Dyn 2024; 42:696-709. [PMID: 37021478 DOI: 10.1080/07391102.2023.2196699] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 03/17/2023] [Indexed: 04/07/2023]
Abstract
Cancers are characterized by the aberrant expression of certain genes that trigger a cascade of molecular events that culminate in dysregulated cell division. Consequently, the inhibition of the products of these expressedgenes has emerged as a rational approach in cancer therapy. The apoptosis signal-regulating kinase 1 (ASK1) protein, encoded by the mitogen-activated protein kinase kinase kinase 5 (MAP3K5) gene, plays pertinent roles in the mediation of cell death induced by stress and inflammation, andis often found at elevated levels in cancer. Consequently, it has emerged as a molecular target for the development of potential chemotherapeutics through identification of selective inhibitors. However, there is still dearth of ASK1 inhibitors in clinical use. Hence, molecular modelling approaches were employed in this study to discover potential ASK1 inhibitors from phytochemicals. Twenty-five phytocompounds from four medicinal plants were tested for their inhibitory prowess via molecular docking. Interestingly, all the compounds exhibited promising inhibitory potentials for ASK1. However, further subjection to filtering procedures via different pipelines including drug-likeness evaluation, pharmacokinetics screening, toxicity profiling, and better affinities compared to the approved inhibitor resulted in three hit compounds namely ellagic acid, luteolin, and kaempferol with suitable properties. Profiling of the interactions formed between the hit\compounds and the targets revealed several interactions that were not present in that of the approved inhibitor, while molecular dynamics (MD) simulation revealed the complexes formed as stable. Conclusively, this study identified three compounds with ASK1 inhibitory potentials that are worthy of further exploration in in vitro and in vivo studies.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Uchechukwu C Ogbodo
- Department of Applied Biochemistry, Faculty of Biosciences, Nnamdi Azikiwe University, Awka, Nigeria
| | - Toheeb A Balogun
- Department of Biochemistry, Adekunle Ajasin University, Akungba-Akoko, Nigeria
| | - Victor Omoboyede
- Department of Biochemistry, School of Life Sciences (SLS), Federal University of Technology Akure, Akure, Ondo State, Nigeria
- Computer-Aided Therapeutics Laboratory (CATL), School of Life Sciences (SLS), Federal University of Technology Akure, Akure, Nigeria
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3
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Kashyap D, Rele S, Bagde PH, Saini V, Chatterjee D, Jain AK, Pandey RK, Jha HC. Comprehensive insight into altered host cell-signaling cascades upon Helicobacter pylori and Epstein-Barr virus infections in cancer. Arch Microbiol 2023; 205:262. [PMID: 37310490 DOI: 10.1007/s00203-023-03598-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2023] [Revised: 05/22/2023] [Accepted: 05/23/2023] [Indexed: 06/14/2023]
Abstract
Cancer is characterized by mutagenic events that lead to disrupted cell signaling and cellular functions. It is one of the leading causes of death worldwide. Literature suggests that pathogens, mainly Helicobacter pylori and Epstein-Barr virus (EBV), have been associated with the etiology of human cancer. Notably, their co-infection may lead to gastric cancer. Pathogen-mediated DNA damage could be the first and crucial step in the carcinogenesis process that modulates numerous cellular signaling pathways. Altogether, it dysregulates the metabolic pathways linked with cell growth, apoptosis, and DNA repair. Modulation in these pathways leads to abnormal growth and proliferation. Several signaling pathways such RTK, RAS/MAPK, PI3K/Akt, NFκB, JAK/STAT, HIF1α, and Wnt/β-catenin are known to be altered in cancer. Therefore, this review focuses on the oncogenic roles of H. pylori, EBV, and its associated signaling cascades in various cancers. Scrutinizing these signaling pathways is crucial and may provide new insights and targets for preventing and treating H. pylori and EBV-associated cancers.
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Affiliation(s)
- Dharmendra Kashyap
- Lab No. POD 1B 602, Infection Bio-Engineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | - Samiksha Rele
- Lab No. POD 1B 602, Infection Bio-Engineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | - Pranit Hemant Bagde
- Lab No. POD 1B 602, Infection Bio-Engineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | - Vaishali Saini
- Lab No. POD 1B 602, Infection Bio-Engineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India
| | | | | | - Rajan Kumar Pandey
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177, Solna, Sweden
| | - Hem Chandra Jha
- Lab No. POD 1B 602, Infection Bio-Engineering Group, Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, Madhya Pradesh, 453552, India.
- Centre for Rural Development and Technology, Indian Institute of Technology Indore, Madhya Pradesh, 453552, Indore, India.
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4
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Zhang Q, Wu X, Zhang H, Wu Q, Fu M, Hua L, Zhu X, Guo Y, Zhang L, You Q, Wang L. Protein Phosphatase 5-Recruiting Chimeras for Accelerating Apoptosis-Signal-Regulated Kinase 1 Dephosphorylation with Antiproliferative Activity. J Am Chem Soc 2023; 145:1118-1128. [PMID: 36546850 DOI: 10.1021/jacs.2c10759] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A normal phosphorylation state is essential for the function of proteins. Biased regulation frequently results in morbidity, especially for the hyperphosphorylation of oncoproteins. The hyperphosphorylation of ASK1 at Thr838 leads to a persistently high activity state, which accelerates the course of gastric cancer. Under normal conditions, PP5 specifically dephosphorylates p-ASK1T838 in cells, thereby weakening ASK1 to a low-basal activity state. However, in tumor types, PP5 shows low activity with a self-inhibition mechanism, making p-ASK1T838 remain at a high level. Thus, we aim to design phosphatase recruitment chimeras (PHORCs) through a proximity-mediated effect for specifically accelerating the dephosphorylation of p-ASK1T838. Herein, we describe DDO3711 as the first PP5-recruiting PHORC, which is formed by connecting a small molecular ASK1 inhibitor to a PP5 activator through a chemical linker, to effectively decrease the level of p-ASK1T838 in vitro and in vivo. DDO3711 shows preferable antiproliferative activity (IC50 = 0.5 μM) against MKN45 cells through a direct binding and proximity-mediated mechanism, while the ASK1 inhibitor and the PP5 activator, used alone or in combination, exhibit no effect on MKN45 cells. Using DDO3711, PHORCs are identified as effective tools to accelerate the dephosphorylation of POIs and provide important evidence to achieve precise phosphorylation regulation, which will promote confidence in the further regulation of abnormally phosphorylated oncoproteins.
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Affiliation(s)
- Qiuyue Zhang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Xuexuan Wu
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Hengheng Zhang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Qiuyu Wu
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Min Fu
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Liwen Hua
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Xinyue Zhu
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Yuqi Guo
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Lianshan Zhang
- Shanghai Hengrui Pharmaceutical Co., Ltd., Shanghai 200245, China
| | - Qidong You
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
| | - Lei Wang
- State Key Laboratory of Natural Medicines and Jiangsu Key Laboratory of Drug Design and Optimization, China Pharmaceutical University, Nanjing 210009, China.,Department of Medicinal Chemistry, School of Pharmacy, China Pharmaceutical University, Nanjing 210009, China
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5
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Obsilova V, Honzejkova K, Obsil T. Structural Insights Support Targeting ASK1 Kinase for Therapeutic Interventions. Int J Mol Sci 2021; 22:ijms222413395. [PMID: 34948191 PMCID: PMC8705584 DOI: 10.3390/ijms222413395] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 12/10/2021] [Accepted: 12/11/2021] [Indexed: 12/22/2022] Open
Abstract
Apoptosis signal-regulating kinase (ASK) 1, a member of the mitogen-activated protein kinase kinase kinase (MAP3K) family, modulates diverse responses to oxidative and endoplasmic reticulum (ER) stress and calcium influx. As a crucial cellular stress sensor, ASK1 activates c-Jun N-terminal kinases (JNKs) and p38 MAPKs. Their excessive and sustained activation leads to cell death, inflammation and fibrosis in various tissues and is implicated in the development of many neurological disorders, such as Alzheimer’s, Parkinson’s and Huntington disease and amyotrophic lateral sclerosis, in addition to cardiovascular diseases, diabetes and cancer. However, currently available inhibitors of JNK and p38 kinases either lack efficacy or have undesirable side effects. Therefore, targeted inhibition of their upstream activator, ASK1, stands out as a promising therapeutic strategy for treating such severe pathological conditions. This review summarizes recent structural findings on ASK1 regulation and its role in various diseases, highlighting prospects for ASK1 inhibition in the treatment of these pathologies.
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Affiliation(s)
- Veronika Obsilova
- Department of Structural Biology of Signaling Proteins, Division BIOCEV, Institute of Physiology of the Czech Academy of Sciences, 25250 Vestec, Czech Republic
- Correspondence: (V.O.); (T.O.); Tel.: +420-325-87-3513 (V.O.); +420-22-195-1303 (T.O.)
| | - Karolina Honzejkova
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, 12843 Prague, Czech Republic;
| | - Tomas Obsil
- Department of Structural Biology of Signaling Proteins, Division BIOCEV, Institute of Physiology of the Czech Academy of Sciences, 25250 Vestec, Czech Republic
- Department of Physical and Macromolecular Chemistry, Faculty of Science, Charles University, 12843 Prague, Czech Republic;
- Correspondence: (V.O.); (T.O.); Tel.: +420-325-87-3513 (V.O.); +420-22-195-1303 (T.O.)
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6
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Volynets GP, Pletnova LV, Sapelkin VM, Savytskyi OV, Yarmoluk SM. A computational analysis of the binding free energies of apoptosis signal-regulating kinase 1 inhibitors from different chemotypes. MOLECULAR SIMULATION 2021. [DOI: 10.1080/08927022.2021.1922686] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Galyna P. Volynets
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, NAS of Ukraine, Kyiv, Ukraine
- Scientific Services Company Otava Ltd., Kyiv, Ukraine
| | - Larysa V. Pletnova
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, NAS of Ukraine, Kyiv, Ukraine
| | - Vladislav M. Sapelkin
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, NAS of Ukraine, Kyiv, Ukraine
| | - Oleksandr V. Savytskyi
- Department of Protein Engineering and Bioinformatics, Institute of Molecular Biology and Genetics, NAS of Ukraine, Kyiv, Ukraine
| | - Sergiy M. Yarmoluk
- Department of Medicinal Chemistry, Institute of Molecular Biology and Genetics, NAS of Ukraine, Kyiv, Ukraine
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7
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Interplay between Mitochondrial Metabolism and Cellular Redox State Dictates Cancer Cell Survival. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:1341604. [PMID: 34777681 PMCID: PMC8580634 DOI: 10.1155/2021/1341604] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/22/2021] [Revised: 09/30/2021] [Accepted: 10/04/2021] [Indexed: 02/06/2023]
Abstract
Mitochondria are the main powerhouse of the cell, generating ATP through the tricarboxylic acid cycle (TCA) and oxidative phosphorylation (OXPHOS), which drives myriad cellular processes. In addition to their role in maintaining bioenergetic homeostasis, changes in mitochondrial metabolism, permeability, and morphology are critical in cell fate decisions and determination. Notably, mitochondrial respiration coupled with the passage of electrons through the electron transport chain (ETC) set up a potential source of reactive oxygen species (ROS). While low to moderate increase in intracellular ROS serves as secondary messenger, an overwhelming increase as a result of either increased production and/or deficient antioxidant defenses is detrimental to biomolecules, cells, and tissues. Since ROS and mitochondria both regulate cell fate, attention has been drawn to their involvement in the various processes of carcinogenesis. To that end, the link between a prooxidant milieu and cell survival and proliferation as well as a switch to mitochondrial OXPHOS associated with recalcitrant cancers provide testimony for the remarkable metabolic plasticity as an important hallmark of cancers. In this review, the regulation of cell redox status by mitochondrial metabolism and its implications for cancer cell fate will be discussed followed by the significance of mitochondria-targeted therapies for cancer.
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8
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Qin T, Zhao J, Liu X, Li L, Zhang X, Shi X, Ke Y, Liu W, Huo J, Dong Y, Shen Y, Li Y, He M, Han S, Li L, Pan C, Wang C. Luteolin combined with low-dose paclitaxel synergistically inhibits epithelial-mesenchymal transition and induces cell apoptosis on esophageal carcinoma in vitro and in vivo. Phytother Res 2021; 35:6228-6240. [PMID: 34494324 DOI: 10.1002/ptr.7267] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 08/08/2021] [Accepted: 08/14/2021] [Indexed: 02/05/2023]
Abstract
Although paclitaxel is a promising frontline chemotherapy agent for various malignancies, the clinical applications have been restricted by side effects, drug resistance, and cancer metastasis. The combination of paclitaxel and other agents could be the promising strategies against malignant tumor, which enhances the antitumor effect through synergistic effects, reduces required drug concentrations, and also suppresses tumorigenesis in multiple ways. In this study, we found that luteolin, a natural flavonoid compound, combined with low-dose paclitaxel synergistically regulated the proliferation, migration, epithelial-mesenchymal transition (EMT), and apoptosis of esophageal cancer cells in vitro, as well as synergistically inhibited tumor growth without obvious toxicity in vivo. The molecular mechanism of inhibiting cell migration and EMT processes may be related to the inhibition of SIRT1, and the mechanism of apoptosis induction is associated with the reactive oxygen species (ROS)/c-Jun N-terminal kinase (JNK) pathway-mediated activation of mitochondrial apoptotic pathway.
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Affiliation(s)
- Tiantian Qin
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
| | - Jinzhu Zhao
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
| | - Xiaojie Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
| | - Leilei Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
| | - Xueyan Zhang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
| | - Xiaoli Shi
- Department of Pharmacy, The Affiliated Hospital of Qingdao University, Qingdao, China
| | - Yu Ke
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
| | - Weihua Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
| | - Junfeng Huo
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
| | - Yalong Dong
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
| | - Yiwei Shen
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Yanyu Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Mingjing He
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Shuhua Han
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Linlin Li
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China
| | - Chengxue Pan
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
| | - Cong Wang
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou, China.,State Key Laboratory of Esophageal Cancer Prevention and treatment, Zhengzhou, China.,Key Laboratory of Advanced Drug Preparation Technologies, Ministry of Education of China, Zhengzhou, China
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9
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Kojima K, Ichijo H, Naguro I. Molecular functions of ASK family in diseases caused by stress-induced inflammation and apoptosis. J Biochem 2021; 169:395-407. [PMID: 33377973 DOI: 10.1093/jb/mvaa145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 12/02/2020] [Indexed: 11/13/2022] Open
Abstract
VCells are constantly exposed to various types of stress, and disruption of the proper response leads to a variety of diseases. Among them, inflammation and apoptosis are important examples of critical responses and should be tightly regulated, as inappropriate control of these responses is detrimental to the organism. In several disease states, these responses are abnormally regulated, with adverse effects. Apoptosis signal-regulating kinase (ASK) family members are stress-responsive kinases that regulate inflammation and apoptosis after a variety of stimuli, such as oxidative stress and endoplasmic reticulum stress. In this review, we summarize recent reports on the ASK family in terms of their involvement in inflammatory diseases, focussing on upstream stimuli that regulate ASK family members.
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Affiliation(s)
- Kazuki Kojima
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Hidenori Ichijo
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Isao Naguro
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
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10
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Zhang L, Tian R, Yao X, Zhang XJ, Zhang P, Huang Y, She ZG, Li H, Ji YX, Cai J. Milk Fat Globule-Epidermal Growth Factor-Factor 8 Improves Hepatic Steatosis and Inflammation. Hepatology 2021; 73:586-605. [PMID: 32297339 DOI: 10.1002/hep.31277] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 03/22/2020] [Accepted: 03/24/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND AIMS Milk fat globule-epidermal growth factor-factor 8 (MFGE8) has been shown to be a critical extracellular molecule that mediates apoptotic signaling in the pathological process of nonalcoholic fatty liver disease (NAFLD). MFGE8 is abundantly expressed in hepatocytes, but its function in the pathogenesis of NAFLD has not been characterized. APPROACH AND RESULTS In our current study, hepatic MFGE8 showed a protective role in the pathogenesis of NAFLD. Hepatic MFGE8 deletion largely exacerbated lipid accumulation and inflammatory responses in the liver in response to overnutrition. Mechanistically, intercellular MFGE8 was shown to directly bind to apoptosis signal-regulating kinase 1 (ASK1) and to inhibit its dimerization and phosphorylation under a normal diet. However, under metabolic challenges, decreased cytoplasmic MFGE8 facilitated the dimerization and phosphorylation of ASK1 and subsequent mitogen-activated protein kinase signaling in hepatocytes. CONCLUSIONS Hepatic MFGE8 is an endogenous inhibitor that halts the progression of hepatic steatosis and inflammation. Metabolic challenge-induced loss of intracellular MFGE8 facilitates ASK1 dimerization and phosphorylation. Therefore, maintaining hepatic MFGE8 levels may serve as an alternative strategy for the treatment of NAFLD.
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Affiliation(s)
- Lei Zhang
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina.,Institute of Model Animal of Wuhan UniversityWuhanChina
| | - Ruifeng Tian
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina.,Institute of Model Animal of Wuhan UniversityWuhanChina
| | - Xinxin Yao
- Institute of Model Animal of Wuhan UniversityWuhanChina
| | - Xiao-Jing Zhang
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina.,Institute of Model Animal of Wuhan UniversityWuhanChina
| | - Peng Zhang
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina.,Institute of Model Animal of Wuhan UniversityWuhanChina.,Basic Medical SchoolWuhan UniversityWuhanChina
| | - Yongping Huang
- Institute of Model Animal of Wuhan UniversityWuhanChina.,College of Life ScienceWuhan UniversityWuhanChina
| | - Zhi-Gang She
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina.,Institute of Model Animal of Wuhan UniversityWuhanChina
| | - Hongliang Li
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina.,Institute of Model Animal of Wuhan UniversityWuhanChina.,Basic Medical SchoolWuhan UniversityWuhanChina
| | - Yan-Xiao Ji
- Institute of Model Animal of Wuhan UniversityWuhanChina.,Medical Science Research CenterZhongnan Hospital of Wuhan UniversityWuhanChina
| | - Jingjing Cai
- Department of CardiologyRenmin Hospital of Wuhan UniversityWuhanChina.,Institute of Model Animal of Wuhan UniversityWuhanChina.,Department of CardiologyCentral South UniversityThe Third Xiangya HospitalChangshaChina
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11
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Dysregulated Immune Responses by ASK1 Deficiency Alter Epithelial Progenitor Cell Fate and Accelerate Metaplasia Development during H. pylori Infection. Microorganisms 2020; 8:microorganisms8121995. [PMID: 33542169 PMCID: PMC7765114 DOI: 10.3390/microorganisms8121995] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2020] [Revised: 12/11/2020] [Accepted: 12/11/2020] [Indexed: 02/06/2023] Open
Abstract
The mechanism of H. pylori-induced atrophy and metaplasia has not been fully understood. Here, we demonstrate the novel role of Apoptosis signal-regulating kinase 1 (ASK1) and downstream MAPKs as a regulator of host immune responses and epithelial maintenance against H. pylori infection. ASK1 gene deficiency resulted in enhanced inflammation with numerous inflammatory cells including Gr-1+CD11b+ myeloid-derived suppressor cells (MDSCs) recruited into the infected stomach. Increase of IL-1β release from apoptotic macrophages and enhancement of TH1-polarized immune responses caused STAT1 and NF-κB activation in epithelial cells in ASK1 knockout mice. Dysregulated immune and epithelial activation in ASK1 knockout mice led to dramatic expansion of gastric progenitor cells and massive metaplasia development. Bone marrow transplantation experiments revealed that ASK1 in inflammatory cells is critical for inducing immune disorder and metaplastic changes in epithelium, while ASK1 in epithelial cells regulates cell proliferation in stem/progenitor zone without changes in inflammation and differentiation. These results suggest that H. pylori-induced immune cells may regulate epithelial homeostasis and cell fate as an inflammatory niche via ASK1 signaling.
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Han T, Gao J, Wang L, Qu Y, Sun A, Peng K, Zhu J, Liu H, Yang W, Shao G, Lin Q. ASK1 inhibits proliferation and migration of lung cancer cells via inactivating TAZ. Am J Cancer Res 2020; 10:2785-2799. [PMID: 33042617 PMCID: PMC7539782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Accepted: 08/21/2020] [Indexed: 06/11/2023] Open
Abstract
ASK1 (Apoptosis Signal-regulating Kinase 1, also MEKK5) is known to mediate cellular stress signaling pathways through activating p38 kinase. We here observed that ectopically expression of ASK1, but not its kinase-dead mutant, impaired cell proliferation and migration in lung cancer A549 and NCI-H1975 cells. To our surprise, this inhibitory effect of ASK1 is independent on activation of p38 kinase. We further discovered that ASK1 interacts with the WW domain of YAP and TAZ (also WWTR1) that are transcriptional co-activators and the Hippo signaling effectors. Overexpression of wild type ASK1, but not the kinase-dead mutant, in the lung cancer cells down-regulated the expression of the YAP/TAZ target genes CYR61 and CTGF. It seems that ASK1 specifically inactivates TAZ, not YAP, as ASK1 blocked nuclear translocation of TAZ only, while had no effect on YAP. Furthermore, knockdown of TAZ in the lung cancer cells caused the same inhibitory effect on cell proliferation and migration as that of overexpression of ASK1. Thus, our studies have defined a new signaling pathway of ASK1 for regulation of lung cancer cell proliferation and migration via interacting with and inactivating TAZ.
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Affiliation(s)
- Tiantian Han
- School of Medicine, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
| | - Jinyi Gao
- School of Medicine, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
| | - Lincui Wang
- School of Medicine, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
| | - Yaping Qu
- School of Medicine, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
| | - Aiqin Sun
- School of Medicine, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
| | - Ke Peng
- School of Medicine, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
| | - Jun Zhu
- School of Medicine, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
| | - Hanqing Liu
- School of Pharmacology, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
| | - Wannian Yang
- School of Medicine, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
| | - Genbao Shao
- School of Medicine, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
| | - Qiong Lin
- School of Medicine, Jiangsu University301 Xuefu Road, Zhenjiang, Jiangsu, China
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Karasic TB, O'Hara MH, Teitelbaum UR, Damjanov N, Giantonio BJ, d'Entremont TS, Gallagher M, Zhang PJ, O'Dwyer PJ. Phase II Trial of Palbociclib in Patients with Advanced Esophageal or Gastric Cancer. Oncologist 2020; 25:e1864-e1868. [PMID: 32692450 DOI: 10.1634/theoncologist.2020-0681] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2020] [Accepted: 07/13/2020] [Indexed: 01/17/2023] Open
Abstract
LESSONS LEARNED Palbociclib monotherapy demonstrated minimal clinical activity in patients with previously treated gastroesophageal cancers. Further clinical evaluation of palbociclib monotherapy is not warranted in gastroesophageal cancers, but improved understanding of resistance mechanisms may permit rational combination approaches. BACKGROUND Dysregulation of the cell cycle is a hallmark of cancer. Progression through the G1/S transition requires phosphorylation of retinoblastoma (RB) by cyclin-dependent kinases (CDKs) 4 and 6, which are regulated by cyclins D and E. Amplifications of cyclin D loci and activating mutations in CDKs are frequent molecular aberrations in gastroesophageal malignancies. We conducted a phase II trial of the CDK4/6 inhibitor palbociclib as an initial test of efficacy. METHODS Patients with previously treated metastatic gastroesophageal cancers with intact RB nuclear expression by immunohistochemistry were treated with 125 mg daily of palbociclib for days 1-21 of 28-day cycles. The primary endpoint was overall response rate. RESULTS We screened 29 patients and enrolled 21 patients: 5 with gastric adenocarcinoma, 3 with gastroesophageal junction adenocarcinoma, 8 with esophageal adenocarcinoma, and 5 with esophageal squamous cell carcinoma. All 29 tumors screened had intact nuclear RB expression, and four treated patients tested positive for CCND1 overexpression. No objective responses were seen. Median progression-free survival was 1.8 months, and median overall survival was 3.0 months. All recurrent grade 3 or 4 toxicities were hematologic, with neutropenia in eight patients (38%), anemia in four patients (19%), and thrombocytopenia in two patients (10%). CONCLUSION Palbociclib has limited single-agent activity in gastroesophageal tumors.
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Affiliation(s)
| | - Mark H O'Hara
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Ursina R Teitelbaum
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Nevena Damjanov
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Bruce J Giantonio
- Department of Medicine, Harvard Medical School, Boston, Massachusetts, USA
| | - Tracy S d'Entremont
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Maryann Gallagher
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Paul J Zhang
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
| | - Peter J O'Dwyer
- Department of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania, USA
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Hata M, Kinoshita H, Hayakawa Y, Konishi M, Tsuboi M, Oya Y, Kurokawa K, Hayata Y, Nakagawa H, Tateishi K, Fujiwara H, Hirata Y, Worthley DL, Muranishi Y, Furukawa T, Kon S, Tomita H, Wang TC, Koike K. GPR30-Expressing Gastric Chief Cells Do Not Dedifferentiate But Are Eliminated via PDK-Dependent Cell Competition During Development of Metaplasia. Gastroenterology 2020; 158:1650-1666.e15. [PMID: 32032583 PMCID: PMC8796250 DOI: 10.1053/j.gastro.2020.01.046] [Citation(s) in RCA: 38] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Revised: 01/15/2020] [Accepted: 01/20/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND & AIMS Gastric chief cells, a mature cell type that secretes digestive enzymes, have been proposed to be the origin of metaplasia and cancer through dedifferentiation or transdifferentiation. However, studies supporting this claim have had technical limitations, including issues with the specificity of chief cell markers and the toxicity of drugs used. We therefore sought to identify genes expressed specifically in chief cells and establish a model to trace these cells. METHODS We performed transcriptome analysis of Mist1-CreERT-traced cells, with or without chief cell depletion. Gpr30-rtTA mice were generated and crossed to TetO-Cre mice, and lineage tracing was performed after crosses to R26-TdTomato mice. Additional lineage tracing experiments were performed using Mist1-CreERT, Kitl-CreERT, Tff1-Cre, and Tff2-Cre mice crossed to reporter mice. Mice were given high-dose tamoxifen or DMP-777 or were infected with Helicobacter pylori to induce gastric metaplasia. We studied mice that expressed mutant forms of Ras in gastric cells, using TetO-KrasG12D, LSL-KrasG12D, and LSL-HrasG12V mice. We analyzed stomach tissues from GPR30-knockout mice. Mice were given dichloroacetate to inhibit pyruvate dehydrogenase kinase (PDK)-dependent cell competition. RESULTS We identified GPR30, the G-protein-coupled form of the estrogen receptor, as a cell-specific marker of chief cells in gastric epithelium of mice. Gpr30-rtTA mice crossed to TetO-Cre;R26-TdTomato mice had specific expression of GPR30 in chief cells, with no expression noted in isthmus stem cells or lineage tracing of glands. Expression of mutant Kras in GPR30+ chief cells did not lead to the development of metaplasia or dysplasia but, instead, led to a reduction in labeled numbers of chief cells and a compensatory expansion of neck lineage, which was derived from upper Kitl+ clones. Administration of high-dose tamoxifen, DMP-777, or H pylori decreased the number of labeled chief cells. Chief cells were eliminated from epithelia via GPR30- and PDK-dependent cell competition after metaplastic stimuli, whereas loss of GRP30 or inhibition of PDK activity preserved chief cell numbers and attenuated neck lineage cell expansion. CONCLUSIONS In tracing studies of mice, we found that most chief cells are lost during metaplasia and therefore are unlikely to contribute to gastric carcinogenesis. Expansion of cells that coexpress neck and chief lineage markers, known as spasmolytic polypeptide-expressing metaplasia, does not occur via dedifferentiation from chief cells but, rather, through a compensatory response from neck progenitors to replace the eliminated chief cells.
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Affiliation(s)
- Masahiro Hata
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, 1138655, Japan,Co-first authors
| | - Hiroto Kinoshita
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, 1138655, Japan,Department of Gastroenterology, The Institute for Adult Diseases, Asahi-life Foundation, Tokyo, 103-0002, Japan,Co-first authors
| | - Yoku Hayakawa
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, Japan.
| | - Mitsuru Konishi
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, 1138655, Japan
| | - Mayo Tsuboi
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, 1138655, Japan
| | - Yukiko Oya
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, 1138655, Japan
| | - Ken Kurokawa
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, 1138655, Japan
| | - Yuki Hayata
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, 1138655, Japan
| | - Hayato Nakagawa
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, 1138655, Japan
| | - Keisuke Tateishi
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, 1138655, Japan
| | - Hiroaki Fujiwara
- Department of Gastroenterology, The Institute for Adult Diseases, Asahi-life Foundation, Tokyo, 103-0002, Japan
| | - Yoshihiro Hirata
- Division of Advanced Genome Medicine, The Institute of Medical Science, the University of Tokyo, Tokyo, 108-8639, Japan
| | | | - Yuki Muranishi
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, 565-0871, Japan
| | - Takahisa Furukawa
- Laboratory for Molecular and Developmental Biology, Institute for Protein Research, Osaka University, Osaka, 565-0871, Japan
| | - Shunsuke Kon
- Tokyo University of Science, Division of Development and Aging, Research Institute for Biomedical Sciences, Chiba, 278-0022, Japan
| | - Hiroyuki Tomita
- Department of Tumor Pathology, Gifu University Graduate School of Medicine, Gifu, 501-1194, JAPAN
| | - Timothy C. Wang
- Division of Digestive and Liver Disease, Department of Medicine, Columbia University, New York, NY, 10032, USA
| | - Kazuhiko Koike
- Department of Gastroenterology, Graduate school of Medicine, the University of Tokyo, Tokyo, 1138655, Japan
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Brys R, Gibson K, Poljak T, Van Der Plas S, Amantini D. Discovery and development of ASK1 inhibitors. PROGRESS IN MEDICINAL CHEMISTRY 2020; 59:101-179. [PMID: 32362327 DOI: 10.1016/bs.pmch.2020.02.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Aberrant activation of mitogen-activated protein kinases (MAPKs) like c-Jun N-terminal kinase (JNK) and p38 is an event involved in the pathophysiology of numerous human diseases. The apoptosis signal-regulating kinase 1 (ASK1) is an upstream target that gets activated only under pathological conditions and as such is a promising target for therapeutic intervention. In the first part of this review the molecular mechanisms leading to ASK1 activation and regulation will be described as well as the evidences supporting a pathogenic role for ASK1 in human disease. In the second part, an update on drug discovery efforts towards the discovery and development of ASK1-targeting therapies will be provided.
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Affiliation(s)
| | - Karl Gibson
- Sandexis Medicinal Chemistry Ltd, Innovation House Discovery ParkSandwich, Kent, United Kingdom
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16
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Understanding MAPK Signaling Pathways in Apoptosis. Int J Mol Sci 2020; 21:ijms21072346. [PMID: 32231094 PMCID: PMC7177758 DOI: 10.3390/ijms21072346] [Citation(s) in RCA: 530] [Impact Index Per Article: 132.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 03/10/2020] [Accepted: 03/25/2020] [Indexed: 02/07/2023] Open
Abstract
MAPK (mitogen-activated protein kinase) signaling pathways regulate a variety of biological processes through multiple cellular mechanisms. In most of these processes, such as apoptosis, MAPKs have a dual role since they can act as activators or inhibitors, depending on the cell type and the stimulus. In this review, we present the main pro- and anti-apoptotic mechanisms regulated by MAPKs, as well as the crosstalk observed between some MAPKs. We also describe the basic signaling properties of MAPKs (ultrasensitivity, hysteresis, digital response), and the presence of different positive feedback loops in apoptosis. We provide a simple guide to predict MAPKs’ behavior, based on the intensity and duration of the stimulus. Finally, we consider the role of MAPKs in osmostress-induced apoptosis by using Xenopus oocytes as a cell model. As we will see, apoptosis is plagued with multiple positive feedback loops. We hope this review will help to understand how MAPK signaling pathways engage irreversible cellular decisions.
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Trevelyan SJ, Brewster JL, Burgess AE, Crowther JM, Cadell AL, Parker BL, Croucher DR, Dobson RCJ, Murphy JM, Mace PD. Structure-based mechanism of preferential complex formation by apoptosis signal–regulating kinases. Sci Signal 2020; 13:13/622/eaay6318. [DOI: 10.1126/scisignal.aay6318] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Apoptosis signal–regulating kinases (ASK1, ASK2, and ASK3) are activators of the p38 and c-Jun N-terminal kinase (JNK) mitogen-activated protein kinase (MAPK) pathways. ASK1–3 form oligomeric complexes known as ASK signalosomes that initiate signaling cascades in response to diverse stress stimuli. Here, we demonstrated that oligomerization of ASK proteins is driven by previously uncharacterized sterile-alpha motif (SAM) domains that reside at the carboxy-terminus of each ASK protein. SAM domains from ASK1–3 exhibited distinct behaviors, with the SAM domain of ASK1 forming unstable oligomers, that of ASK2 remaining predominantly monomeric, and that of ASK3 forming a stable oligomer even at a low concentration. In contrast to their behavior in isolation, the ASK1 and ASK2 SAM domains preferentially formed a stable heterocomplex. The crystal structure of the ASK3 SAM domain, small-angle x-ray scattering, and mutagenesis suggested that ASK3 oligomers and ASK1-ASK2 complexes formed discrete, quasi-helical rings through interactions between the mid-loop of one molecule and the end helix of another molecule. Preferential ASK1-ASK2 binding was consistent with mass spectrometry showing that full-length ASK1 formed hetero-oligomeric complexes incorporating large amounts of ASK2. Accordingly, disrupting the association between SAM domains impaired ASK activity in the context of electrophilic stress induced by 4-hydroxy-2-nonenal (HNE). These findings provide a structural template for how ASK proteins assemble foci that drive inflammatory signaling and reinforce the notion that strategies to target ASK proteins should consider the concerted actions of multiple ASK family members.
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Affiliation(s)
- Sarah J. Trevelyan
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, P.O. Box 56, 710 Cumberland St., Dunedin 9054, New Zealand
| | - Jodi L. Brewster
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, P.O. Box 56, 710 Cumberland St., Dunedin 9054, New Zealand
| | - Abigail E. Burgess
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, P.O. Box 56, 710 Cumberland St., Dunedin 9054, New Zealand
| | - Jennifer M. Crowther
- Biomolecular Interaction Centre, School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
| | - Antonia L. Cadell
- Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, New South Wales 2010, Australia
| | - Benjamin L. Parker
- Department of Physiology, School of Biomedical Sciences, University of Melbourne, Parkville, Victoria 3010, Australia
| | - David R. Croucher
- Kinghorn Cancer Centre, Garvan Institute of Medical Research, Sydney, New South Wales 2010, Australia
- St Vincent’s Hospital Clinical School, University of New South Wales, Sydney, New South Wales, 2052, Australia
- School of Medicine and Medical Science, University College Dublin, Belfield, Dublin 4, Ireland
| | - Renwick C. J. Dobson
- Biomolecular Interaction Centre, School of Biological Sciences, University of Canterbury, Christchurch, New Zealand
- Department of Biochemistry and Molecular Biology, Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3010, Australia
| | - James M. Murphy
- Walter and Eliza Hall Institute of Medical Research, Parkville, Victoria 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, Victoria 3010, Australia
| | - Peter D. Mace
- Department of Biochemistry, School of Biomedical Sciences, University of Otago, P.O. Box 56, 710 Cumberland St., Dunedin 9054, New Zealand
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MUC1 oncoprotein mitigates ER stress via CDA-mediated reprogramming of pyrimidine metabolism. Oncogene 2020; 39:3381-3395. [PMID: 32103170 PMCID: PMC7165067 DOI: 10.1038/s41388-020-1225-4] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2019] [Revised: 02/12/2020] [Accepted: 02/14/2020] [Indexed: 12/12/2022]
Abstract
The Mucin 1 (MUC1) protein is overexpressed in various cancers and mediates chemotherapy resistance. However, the mechanism is not fully understood. Given that most chemotherapeutic drugs disrupt ER homeostasis as part of their toxicity, and MUC1 expression is regulated by proteins involved in ER homeostasis, we investigated the link between MUC1 and ER homeostasis. MUC1 knockdown in pancreatic cancer cells enhanced unfolded protein response (UPR) signaling and cell death upon ER stress induction. Transcriptomic analysis revealed alterations in the pyrimidine metabolic pathway and cytidine deaminase (CDA). ChIP and CDA activity assays showed that MUC1 occupied CDA gene promoter upon ER stress induction correlating with increased CDA expression and activity in MUC1-expressing cells as compared to MUC1 knockdown cells. Inhibition of either the CDA or pyrimidine metabolic pathway diminished survival in MUC1-expressing cancer cells upon ER stress induction. Metabolomic analysis demonstrated that MUC1-mediated CDA activity corresponded to deoxycytidine to deoxyuridine metabolic reprogramming upon ER stress induction. The resulting increase in deoxyuridine mitigated ER stress-induced cytotoxicity. Additionally, given 1) the established roles of MUC1 in protecting cells against reactive oxygen species (ROS) insults, 2) ER stress-generated ROS further promote ER stress and 3) the emerging anti-oxidant property of deoxyuridine, we further investigated if MUC1 regulated ER stress by a deoxyuridine-mediated modulation of ROS levels. We observed that deoxyuridine could abrogate ROS-induced ER stress to promote cancer cell survival. Taken together, our findings demonstrate a novel MUC1-CDA axis of the adaptive UPR that provides survival advantage upon ER stress induction.
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ASK1 inhibition: a therapeutic strategy with multi-system benefits. J Mol Med (Berl) 2020; 98:335-348. [PMID: 32060587 PMCID: PMC7080683 DOI: 10.1007/s00109-020-01878-y] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2019] [Revised: 12/18/2019] [Accepted: 01/15/2020] [Indexed: 12/11/2022]
Abstract
p38 mitogen-activated protein kinases (P38α and β) and c-Jun N-terminal kinases (JNK1, 2, and 3) are key mediators of the cellular stress response. However, prolonged P38 and JNK signalling is associated with damaging inflammatory responses, reactive oxygen species-induced cell death, and fibrosis in multiple tissues, such as the kidney, liver, central nervous system, and cardiopulmonary systems. These responses are associated with many human diseases, including arthritis, dementia, and multiple organ dysfunctions. Attempts to prevent P38- and JNK-mediated disease using small molecule inhibitors of P38 or JNK have generally been unsuccessful. However, apoptosis signal-regulating kinase 1 (ASK1), an upstream regulator of P38 and JNK, has emerged as an alternative drug target for limiting P38- and JNK-mediated disease. Within this review, we compile the evidence that ASK1 mediates damaging cellular responses via prolonged P38 or JNK activation. We discuss the potential benefits of ASK1 inhibition as a therapeutic and summarise the studies that have tested the effects of ASK1 inhibition in cell and animal disease models, in addition to human clinical trials for a variety of disorders.
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Qi H, Yang Z, Dai C, Wang R, Ke X, Zhang S, Xiang X, Chen K, Li C, Luo J, Shao J, Shen J. STAT3 activates MSK1-mediated histone H3 phosphorylation to promote NFAT signaling in gastric carcinogenesis. Oncogenesis 2020; 9:15. [PMID: 32041943 PMCID: PMC7010763 DOI: 10.1038/s41389-020-0195-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 12/18/2019] [Accepted: 01/16/2020] [Indexed: 12/22/2022] Open
Abstract
Epigenetic abnormalities contribute significantly to the development and progression of gastric cancer. However, the underlying regulatory networks from oncogenic signaling pathway to epigenetic dysregulation remain largely unclear. Here we showed that STAT3 signaling, one of the critical links between inflammation and cancer, acted as a control pathway in gastric carcinogenesis. STAT3 aberrantly transactivates the epigenetic kinase mitogen- and stress-activated protein kinase 1 (MSK1), thereby phosphorylating histone H3 serine10 (H3S10) and STAT3 itself during carcinogen-induced gastric tumorigenesis. We further identified the calcium pathway transcription factor NFATc2 as a novel downstream target of the STAT3-MSK1 positive-regulating loop. STAT3 forms a functional complex with MSK1 at the promoter of NFATc2 to promote its transcription in a H3S10 phosphorylation-dependent way, thus affecting NFATc2-related inflammatory pathways in gastric carcinogenesis. Inhibiting the STAT3/MSK1/NFATc2 signaling axis significantly suppressed gastric cancer cell proliferation and xenograft tumor growth, which provides a potential novel approach for gastric carcinogenesis intervention by regulating aberrant epigenetic and transcriptional mechanisms.
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Affiliation(s)
- Hongyan Qi
- Department of Pathology and Pathophysiology, and Department of Radiation Oncology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Zhiyi Yang
- Department of Pathology and Pathophysiology, and Department of Medical Oncology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Chujun Dai
- Department of Pathology and Pathophysiology, and Department of Medical Oncology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Runan Wang
- Department of Pathology and Pathophysiology, and Department of Medical Oncology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Xinxin Ke
- Department of Pathology and Pathophysiology, and Department of Medical Oncology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Shuilian Zhang
- Department of Pathology and Pathophysiology, and Department of Medical Oncology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Xueping Xiang
- Department of Pathology, the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Kailin Chen
- Department of Pathology and Pathophysiology, and Department of Medical Oncology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Chen Li
- Institute of Genetics and Department of Genetics, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Jindan Luo
- The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China
| | - Jimin Shao
- Department of Pathology and Pathophysiology, and Cancer Institute of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.
| | - Jing Shen
- Department of Pathology and Pathophysiology, and Department of Medical Oncology of the Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, 310058, China.
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Gu J, Zhang X, Yang Z, Wang N. Expression Of Cyclin D1 Protein Isoforms And Its Prognostic Significance In Cervical Cancer. Cancer Manag Res 2019; 11:9073-9083. [PMID: 31695498 PMCID: PMC6817344 DOI: 10.2147/cmar.s224026] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2019] [Accepted: 09/19/2019] [Indexed: 12/22/2022] Open
Abstract
Introduction Cyclin D1 had been associated with different clinical and pathological stages of cervical cancer; however, few studies had focused on its correlation with cervical cancer prognosis. Therefore, this study aimed to assess the expression of cyclin D1a and D1b in normal tissue, cervical cancer and cervical intraepithelial neoplasia and their effect on prognosis. Methods Expression of cyclin D1a and D1b was detected by immunohistochemical staining in 78 cases of primary cervical cancer, 40 cases of cervical intraepithelial neoplasia, and 40 cases of normal cervical tissue. Results No significant difference was observed in the expression of cyclin D1a between normal and cervical cancer tissues (P = 0.201); however, its expression was significantly higher in cervical cancer than in cervical intraepithelial neoplasia tissues (P = 0.000). Expression of cyclin D1b was higher in normal tissues than in cervical cancer tissues (P = 0.000). No significant difference was observed in the expression of cyclin D1a in cervical cancer tissues with respect to age, pathological type, clinical-stage, depth of tumor invasion, or presence of lymph node metastases (P = 0.111,0.119,0.539,0.084,0.539). COX survival analysis showed that lymph node metastasis might be an independent factor affecting postoperative recurrence (hazard risk [HR] = 0.240; 95% confidence interval [CI] = 0.968–30.156; P = 0.034). Discussion Cyclin D1a expression was associated with tumor tissue size and degree of differentiation. The expression of cyclin D1b in cervical cancer was associated with the presence of lymph node metastases. Cyclin D1a and D1b expression in cervical cancer tissue was significantly correlated. Cox survival analysis showed that the presence of lymph node metastases might serve as an independent factor affecting postoperative recurrence. The expression of cyclin D1a and D1b was not associated with cervical cancer prognosis. Conclusion Assessment of cyclin D1a and D1b expression in cervical cancer and cervical intraepithelial neoplasia revealed that cyclin D1 could not be used as a reference to assess cervical cancer patient prognosis.
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Affiliation(s)
- Jiahui Gu
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province 110001, People's Republic of China
| | - Xinyu Zhang
- Department of Obstetrics and Gynecology, Daqing People's Hospital, Daqing, Heilongjiang Province 163711, People's Republic of China
| | - Zhuo Yang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province 110001, People's Republic of China
| | - Ning Wang
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, Shenyang, Liaoning Province 110001, People's Republic of China
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22
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Baig MH, Baker A, Ashraf GM, Dong JJ. ASK1 and its role in cardiovascular and other disorders: available treatments and future prospects. Expert Rev Proteomics 2019; 16:857-870. [DOI: 10.1080/14789450.2019.1676735] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Mohammad Hassan Baig
- Department of Family Medicine, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Republic of Korea
| | - Abu Baker
- Nanobiotechnology and nanomedicine lab, Department of Biosciences, Integral University, Lucknow, India
| | - Ghulam M Ashraf
- King Fahd Medical Research Center, King Abdulaziz University, Jeddah, Saudi Arabia
| | - Jae-June Dong
- Department of Family Medicine, Yonsei University College of Medicine, Gangnam Severance Hospital, Seoul, Republic of Korea
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23
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Han J, Lv W, Sheng H, Wang Y, Cao L, Huang S, Zhu L, Hu J. Ecliptasaponin A induces apoptosis through the activation of ASK1/JNK pathway and autophagy in human lung cancer cells. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:539. [PMID: 31807521 DOI: 10.21037/atm.2019.10.07] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Background Non-small cell lung cancer (NSCLC) is one of the causes of carcinomas mortality worldwide. Ecliptasaponin A (ES), a natural product extracted from the plant known as Eclipta prostrata, has been reported as an anti-cancer drug against various cancer cell lines. However, the exact mechanisms of ES have not yet been fully characterized. Methods Numerous studies have been done to support that ES has a powerful inhibiting effect on the growth of cancers via the activation of apoptosis and autophagy. To explore the underlying mechanisms of anti-cancer and investigate the relationships of the apoptosis and autophagy, we used apoptosis signal-regulating kinase 1 (ASK1) inhibitor (GS-4997), c-Jun N-terminal kinase (JNK) inhibitor (SP600125), and autophagy inhibitor [chloroquine (CQ) and 3-methyladenine (3-MA)]. Results ES could potently suppress cell viability and induces apoptotic cell death of human lung cancer cells H460 and H1975. ES activated apoptosis via ASK1/JNK pathway, GS-4997 and SP600125 can attenuated these effects. Furthermore, ES could triggered autophagy in lung cancer cell lines, and the autophagy inhibitor 3-MA and CQ reversed ES-induced apoptosis in H460 and H1975 cells. Furthermore, SP600125 can inhibit autophagy. Conclusions This study showed that ES induces apoptosis in human lung cancer cells by triggering enhanced autophagy and ASK1/JNK pathway, which may thus be a promising agent against lung cancer.
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Affiliation(s)
- Jia Han
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Wang Lv
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Hongxu Sheng
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Yiqing Wang
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Longxiang Cao
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Sha Huang
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Linhai Zhu
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
| | - Jian Hu
- Department of Thoracic Surgery, The First Affiliated Hospital, School of Medicine, Zhejiang University, Hangzhou 310003, China
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24
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Rusnak L, Tang C, Qi Q, Mo X, Fu H. Large tumor suppressor 2, LATS2, activates JNK in a kinase-independent mechanism through ASK1. J Mol Cell Biol 2019; 10:549-558. [PMID: 30496488 DOI: 10.1093/jmcb/mjy061] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2018] [Accepted: 08/15/2018] [Indexed: 12/25/2022] Open
Abstract
Apoptosis signal-regulating kinase 1 (ASK1) is an important mediator of the cell stress response pathways. Because of its central role in regulating cell death, the activity of ASK1 is tightly regulated by protein-protein interactions and post-translational modifications. Deregulation of ASK1 activity has been linked to human diseases, such as neurological disorders and cancer. Here we describe the identification and characterization of large tumor suppressor 2 (LATS2) as a novel binding partner for ASK1. LATS2 is a core kinase in the Hippo signaling pathway and is commonly downregulated in cancer. We found that LATS2 interacts with ASK1 and increases ASK1-mediated signaling to promote apoptosis and activate the JNK mitogen-activated protein kinase (MAPK). This change in MAPK signaling is dependent on the catalytic activity of ASK1 but does not require LATS2 kinase activity. This work identifies a novel role for LATS2 as a positive regulator of the ASK1-MKK-JNK signaling pathway and establishes a kinase-independent function of LATS2 that may be part of the intricate regulatory system for cellular response to diverse stress signals.
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Affiliation(s)
- Lauren Rusnak
- Graduate Program in Cancer Biology, Emory University, Atlanta, GA, USA.,Department of Pharmacology and Emory Chemical Biology Discovery Center, Emory University, Atlanta, GA, USA
| | - Cong Tang
- Department of Pharmacology and Emory Chemical Biology Discovery Center, Emory University, Atlanta, GA, USA.,The First Affiliated Hospital, Medical School of Xi'an Jiaotong University, Xi'an, China
| | - Qi Qi
- Department of Pharmacology and Emory Chemical Biology Discovery Center, Emory University, Atlanta, GA, USA
| | - Xiulei Mo
- Department of Pharmacology and Emory Chemical Biology Discovery Center, Emory University, Atlanta, GA, USA
| | - Haian Fu
- Graduate Program in Cancer Biology, Emory University, Atlanta, GA, USA.,Department of Pharmacology and Emory Chemical Biology Discovery Center, Emory University, Atlanta, GA, USA.,Winship Cancer Institute, Emory University, Atlanta, GA, USA.,Department of Hematology and Medical Oncology, Emory University, Atlanta, GA, USA
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25
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Xie Y, Zhao J, Liang Y, Chen M, Luo Y, Cui X, Jiang B, Peng L, Wang X. MicroRNA-10b controls the metastasis and proliferation of colorectal cancer cells by regulating Krüppel-like factor 4. ARTIFICIAL CELLS NANOMEDICINE AND BIOTECHNOLOGY 2019; 47:1722-1729. [PMID: 31032663 DOI: 10.1080/21691401.2019.1606006] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Mir-10b has been reported as a key regulator of metastasis in many human tumours. Moreover, it has also been regarded as a prognostic marker and therapeutic target of colorectal cancer (CRC). Whether miR-10b could affect the metastasis and proliferation of CRC is unclear. MiR-10b expression was detected by qPCR in human CRC tissues and cell line, Luciferase activity was employed for miR-10b binding to the 3`UTR of KLF4, Genes expression were examined by western blot, and mRNA by qPCR. PI and Annexin V staining were used to evaluate the cell cycle and apoptosis. Cell proliferation was detected with MTT, and cell migration and invasion were performed with Transwell assay. We found that miR-10b expression was up-regulated in metastatic CRC tissues and cell lines. Inhibition of miR-10b prevented cancer cell metastasis and growth by inducing cell-cycle arrest and apoptosis in vitro. Moreover, we found that KLF4 was a direct target of miR-10b. MiR-10b inhibitor led to the up-regulation of E-cadherin expression and the down-regulation of cyclin D1, which were partly abrogated after silencing KLF4.
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Affiliation(s)
- Yue Xie
- a Department of Gastroenterology, Zhujiang Hospital , Southern Medical University , Guangzhou , China
| | - Jing Zhao
- b Department of Radiation Oncology , Tianjin Medical University Cancer Institute and Hospital , Tianjin , China
| | - Yanling Liang
- c Department of Gastroenterology, Nanfang Hospital , Southern Medical University , Guangzhou , China
| | - Min Chen
- a Department of Gastroenterology, Zhujiang Hospital , Southern Medical University , Guangzhou , China
| | - Yihong Luo
- a Department of Gastroenterology, Zhujiang Hospital , Southern Medical University , Guangzhou , China
| | - Xiaobing Cui
- d Department of Gastroenterology, Shenzhen Hospital , Southern Medical University , Shenzhen , China
| | - Bo Jiang
- e Department of Gastroenterology , Beijing Tsinghua Changgung Hospital , Beijing , China
| | - Liang Peng
- f Department of Gastroenterology, First Affiliated Hospital of Guangzhou Medical University , Guangzhou Medical University , Guangzhou , China
| | - Xinying Wang
- a Department of Gastroenterology, Zhujiang Hospital , Southern Medical University , Guangzhou , China
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26
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Wang S, Wang X, Gao Y, Peng Y, Dong N, Xie Q, Zhang X, Wu Y, Li M, Li JL. RN181 is a tumour suppressor in gastric cancer by regulation of the ERK/MAPK-cyclin D1/CDK4 pathway. J Pathol 2019; 248:204-216. [PMID: 30714150 PMCID: PMC6593865 DOI: 10.1002/path.5246] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 12/22/2018] [Accepted: 01/25/2019] [Indexed: 12/27/2022]
Abstract
RN181, a RING finger domain-containing protein, is an E3 ubiquitin ligase. However, its biological function and clinical significance in cancer biology are obscure. Here, we report that RN181 expression is significantly down-regulated in 165 tumour tissues of gastric carcinoma (GC) versus adjacent non-tumour tissues, and inversely associated with tumour differentiation, tumour size, clinical stage, and patient's overall survival. Alterations of RN181 expression in GC cells by retrovirus-transduced up-regulation and down-regulation demonstrated that RN181 functions as a tumour suppressor to inhibit growth of GC in both in vitro culture and in vivo animal models by decreasing tumour cell proliferation and increasing tumour cell apoptosis. Cell cycle analysis revealed that RN181 controls the cell cycle transition from G1 to S phase. Mechanistic studies demonstrated that RN181 inhibits ERK/MAPK signalling, thereby regulating the activity of cyclin D1-CDK4, and consequently controlling progression in the cell cycle from G1 to S phase. Restoring CDK4 in GC cells rescued the inhibitory phenotype produced by RN181 in vitro and in vivo, suggesting a dominant role of CDK4 in control of the tumour growth by RN181. Importantly, RN181 expression is inversely correlated with the expression of cyclin D1 and CDK4 in GC clinical samples, substantiating the role of the RN181-cyclin D1/CDK4 pathway in control of the tumour growth of GC. Our results provide new insights into the pathogenesis and development of GC and rationale for developing novel intervention strategies against GC by disruption of ERK/MAPK-cyclin D1/CDK4 signalling. In addition, RN181 may serve as a novel biomarker for predicting clinical outcome of GC. © 2019 The Authors. The Journal of Pathology published by John Wiley & Sons Ltd on behalf of Pathological Society of Great Britain and Ireland.
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Affiliation(s)
- Suihai Wang
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, PR China
| | - Xiaobo Wang
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, PR China
| | - Yanjun Gao
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, PR China
| | - Yingxia Peng
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, PR China
| | - Ningning Dong
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, PR China
| | - Qian Xie
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, PR China
| | - Xian Zhang
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, PR China
| | - Yingsong Wu
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, PR China
| | - Ming Li
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, PR China
| | - Ji-Liang Li
- Institute of Antibody Engineering, School of Laboratory Medicine and Biotechnology, Southern Medical University, Guangzhou, PR China.,Wenzhou Medical University School of Biomedical Engineering and Eye Hospital, Wenzhou Institute of Biomaterials and Engineering, Wenzhou, PR China.,Institute of Translational and Stratified Medicine, University of Plymouth Faculty of Medicine and Dentistry, Plymouth, UK
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27
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Tripathi R, Rath G, Jawanjal P, Bharadwaj M, Mehrotra R. ≤ Cyclin D1 protein affecting global women's health by regulating HPV mediated adenocarcinoma of the uterine cervix. Sci Rep 2019; 9:5019. [PMID: 30903019 PMCID: PMC6430791 DOI: 10.1038/s41598-019-41394-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2018] [Accepted: 02/26/2019] [Indexed: 01/06/2023] Open
Abstract
Adenocarcinoma (ADC) of the uterine cervix (UC) is a rare form of cervical cancer (CC) caused due to the infection of Human Papilloma Virus (HPV). Cyclin D1 is one of the downstream targets of aberrantly activated Notch signaling, contribute to the etiology of CC. However, little is known about the role of Cyclin D1 in the modulation of cervical ADC and is controversial. The purpose of this study is to determine the role of Cyclin D1 protein and to elucidate the combined analysis with Notch signaling proteins in HPV associated ADCs of CC. A total of 60 biopsy samples (40 normal and 20 ADCs of CC) were analyzed for the expression of Cyclin D1 in HPV associated ADCs via immunohistochemistry and by immunoblotting. HPV-16 positive ADC patients showed a strong association with the Cyclin D1 expression (p = 0.007). The significant mean difference (p = 0.0001) and the pairwise comparison between Cyclin D1/JAG1 (p = 0.0001), and Cyclin D1/Notch-3 (p = 0.0001) were observed. The above Notch signaling proteins showed their synergistic role in modulating Cyclin D1 which in-turn regulates HPV-16 associated ADC of the uterine cervix (UC), affecting women’s global health.
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Affiliation(s)
- Richa Tripathi
- Division of Molecular Genetics & Biochemistry, ICMR-National Institute of Cancer Prevention and Research (NICPR), Noida, India.,Division of Preventive Oncology, ICMR-National Institute of Cancer Prevention and Research (NICPR), Noida, India
| | - Gayatri Rath
- Department of Anatomy, VMMC & Safdarjung Hospital, New Delhi, India
| | - Poonam Jawanjal
- Department of Anatomy, VMMC & Safdarjung Hospital, New Delhi, India
| | - Mausumi Bharadwaj
- Division of Molecular Genetics & Biochemistry, ICMR-National Institute of Cancer Prevention and Research (NICPR), Noida, India.
| | - Ravi Mehrotra
- Division of Preventive Oncology, ICMR-National Institute of Cancer Prevention and Research (NICPR), Noida, India.
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28
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van Weelden G, Bobiński M, Okła K, van Weelden WJ, Romano A, Pijnenborg JMA. Fucoidan Structure and Activity in Relation to Anti-Cancer Mechanisms. Mar Drugs 2019; 17:E32. [PMID: 30621045 PMCID: PMC6356449 DOI: 10.3390/md17010032] [Citation(s) in RCA: 158] [Impact Index Per Article: 31.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/29/2018] [Accepted: 01/02/2019] [Indexed: 02/06/2023] Open
Abstract
Fucoidan is a natural derived compound found in different species of brown algae and in some animals, that has gained attention for its anticancer properties. However, the exact mechanism of action is currently unknown. Therefore, this review will address fucoidans structure, the bioavailability, and all known different pathways affected by fucoidan, in order to formulate fucoidans structure and activity in relation to its anti-cancer mechanisms. The general bioactivity of fucoidan is difficult to establish due to factors like species-related structural diversity, growth conditions, and the extraction method. The main pathways influenced by fucoidan are the PI3K/AKT, the MAPK pathway, and the caspase pathway. PTEN seems to be important in the fucoidan-mediated effect on the AKT pathway. Furthermore, the interaction with VEGF, BMP, TGF-β, and estrogen receptors are discussed. Also, fucoidan as an adjunct seems to have beneficial effects, for both the enhanced effectiveness of chemotherapy and reduced toxicity in healthy cells. In conclusion, the multipotent character of fucoidan is promising in future anti-cancer treatment. However, there is a need for more specified studies of the structure⁻activity relationship of fucoidan from the most promising seaweed species.
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Affiliation(s)
- Geert van Weelden
- Faculty of Science, (Medical) Biology, Radboud University, 6525 XZ Nijmegen, The Netherlands.
- The First Department of Gynecologic Oncology and Gynecology, Medical University of Lublin, 20-081 Lublin, Poland.
| | - Marcin Bobiński
- The First Department of Gynecologic Oncology and Gynecology, Medical University of Lublin, 20-081 Lublin, Poland.
| | - Karolina Okła
- The First Department of Gynecologic Oncology and Gynecology, Medical University of Lublin, 20-081 Lublin, Poland.
| | - Willem Jan van Weelden
- Department of Obstetrics & Gynecology, Radboud University Nijmegen, Medical Centre, 6525 GA Nijmegen, The Netherlands.
| | - Andrea Romano
- Department of Obstetrics and Gynecology, GROW-School for Oncology and Developmental Biology Maastricht University Medical Centre, 6229 HX Maastricht, The Netherlands.
| | - Johanna M A Pijnenborg
- Department of Obstetrics & Gynecology, Radboud University Nijmegen, Medical Centre, 6525 GA Nijmegen, The Netherlands.
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29
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Gao Y, Chen Z, Wang R, Tan X, Huang C, Chen G, Chen Z. LXRα Promotes the Differentiation of Human Gastric Cancer Cells through Inactivation of Wnt/β-catenin Signaling. J Cancer 2019; 10:156-167. [PMID: 30662536 PMCID: PMC6329868 DOI: 10.7150/jca.28600] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Accepted: 11/02/2018] [Indexed: 12/18/2022] Open
Abstract
LXRα is a subtype of the liver X receptors (LXRs). There is accumulating evidence to support the involvement of LXRα in a variety of malignancies. However, the function and specific mechanism of LXRα in gastric cancer (GC) remain unclear. In this study, the expression of LXRα was significantly lower in poorly differentiated and undifferentiated GC tissues compared with well- and moderately differentiated GC tissues by immunohistochemistry analysis. The activation of LXRα leads to the decreased expression of β-catenin, CD44, and Cyclin D1, whereas the inhibition of LXRα has opposite effect. The same results were obtained in animal experiments. Furthermore, results showed that CD44 and Cyclin D1 expression significantly decreased when Wnt/β-catenin signaling was blocked in LXRα silent GC cells, whereas it was significantly increased when Wnt/β-catenin signaling was activated in LXRα over-expressed GC cells. CD44 and Cyclin D1, downstream targets of Wnt/β-catenin signaling, are specific markers for cell differentiation. Therefore, we conclude that LXRα may promote the differentiation of human GC cells through inactivation of Wnt/β-catenin signaling.
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Affiliation(s)
- Yu Gao
- Department of Gastrointestinal Surgery, Xiangya Hospital of Central South University, Hunan key laboratory of precise diagnosis and treatment of gastrointestinal tumor, Changsha, Hunan, P.R. China
| | - Zihua Chen
- Department of Gastrointestinal Surgery, Xiangya Hospital of Central South University, Hunan key laboratory of precise diagnosis and treatment of gastrointestinal tumor, Changsha, Hunan, P.R. China
| | - Ran Wang
- Department of Colorectal and Anus Surgery, Xiangya Hospital of Central South University, Hunan key laboratory of precise diagnosis and treatment of gastrointestinal tumor, Changsha, Hunan, P.R. China
| | - Xiangzhou Tan
- Department of Gastrointestinal Surgery, Xiangya Hospital of Central South University, Hunan key laboratory of precise diagnosis and treatment of gastrointestinal tumor, Changsha, Hunan, P.R. China
| | - Changhao Huang
- Department of Gastrointestinal Surgery, Xiangya Hospital of Central South University, Hunan key laboratory of precise diagnosis and treatment of gastrointestinal tumor, Changsha, Hunan, P.R. China
| | - Guanyang Chen
- Department of Gastrointestinal Surgery, Xiangya Hospital of Central South University, Hunan key laboratory of precise diagnosis and treatment of gastrointestinal tumor, Changsha, Hunan, P.R. China
| | - Zhikang Chen
- Department of Colorectal and Anus Surgery, Xiangya Hospital of Central South University, Hunan key laboratory of precise diagnosis and treatment of gastrointestinal tumor, Changsha, Hunan, P.R. China
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30
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Liu W, Pan HF, Wang Q, Zhao ZM. The application of transgenic and gene knockout mice in the study of gastric precancerous lesions. Pathol Res Pract 2018; 214:1929-1939. [PMID: 30477641 DOI: 10.1016/j.prp.2018.10.022] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Revised: 10/19/2018] [Accepted: 10/20/2018] [Indexed: 12/13/2022]
Abstract
Gastric intestinal metaplasia is a precursor for gastric dysplasia, which is in turn, a risk factor for gastric adenocarcinoma. Gastric metaplasia and dysplasia are known as gastric precancerous lesions (GPLs), which are essential stages in the progression from normal gastric mucosa to gastric cancer (GC) or gastric adenocarcinoma. Genetically-engineered mice have become essential tools in various aspects of GC research, including mechanistic studies and drug discovery. Studies in mouse models have contributed significantly to our understanding of the pathogenesis and molecular mechanisms underlying GPLs and GC. With the development and improvement of gene transfer technology, investigators have created a variety of transgenic and gene knockout mouse models for GPLs, such as H/K-ATPase transgenic and knockout mutant mice and gastrin gene knockout mice. Combined with Helicobacter infection, and treatment with chemical carcinogens, these mice develop GPLs or GC and thus provide models for studying the molecular biology of GC, which may lead to the discovery and development of novel drugs. In this review, we discuss recent progress in the use of genetically-engineered mouse models for GPL research, with particular emphasis on the importance of examining the gastric mucosa at the histological level to investigate morphological changes of GPL and GC and associated protein and gene expression.
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Affiliation(s)
- Wei Liu
- Institute of Gastroenterology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China.
| | - Hua-Feng Pan
- Institute of Gastroenterology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, 510006, China
| | - Qi Wang
- Institute of Clinical Pharmacology, Guangzhou University of Chinese Medicine, Guangzhou 510006, China
| | - Zi-Ming Zhao
- Guangdong Province Engineering Technology Research Institute of T.C.M., Guangzhou 510095, China
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31
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Wan X, Shi L, Ma X, Tang H, Wu G. The Elevated ASK1 Expression Inhibits Proliferation and Invasion in Gastric Cancer HGC-27 Cells. Anat Rec (Hoboken) 2018; 301:1815-1819. [PMID: 30324658 DOI: 10.1002/ar.23906] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Revised: 12/26/2017] [Accepted: 01/24/2018] [Indexed: 12/31/2022]
Abstract
This study aimed to evaluate the effects and mechanism of action of ASK1 gene on the growth and migration of gastric cancer (GC) cells. Total RNA was extracted from the gastric cell lines and GC tissues. The expression level of ASK1, and the association between ASK1 expression and clinicopathological characteristics was assessed by real-time polymerase chain reaction. The effects of ASK1 on the proliferation of HGC-27 cells were assessed by the CCK-8 assay. In addition, the effects of ASK1 on the migration of HGC-27 cells were analyzed by the migration assay using transwell chambers. The expression levels of signaling proteins related to cell migration were detected by Western blotting. Although no significant differences were observed in the expression levels of ASK1 between the GC tissue samples and the normal tissue samples (P = 0.241), ASK1 expression correlated with tumor lymph node metastasis (P = 0.008). Furthermore, ASK1 inhibited proliferation and migration of HGC-27 cells. The increase in the expression of ASK1 in HGC-27 cells induced the activation of the JNK and p38 signaling pathways. The findings demonstrated that increased ASK1 expression level inhibited migration and proliferation of HGC-27 gastric cancer cells, whereas the possible mechanism of action may be attributed to the activation of the JNK and p38 signaling pathways. Anat Rec, 301:1815-1819, 2018. © 2018 Wiley Periodicals, Inc.
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Affiliation(s)
- Xiaochen Wan
- Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou, 310013, People's Republic of China
| | - Liying Shi
- Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou, 310013, People's Republic of China
| | - Xiaohong Ma
- Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou, 310013, People's Republic of China
| | - Haimin Tang
- Department of Pathology, Zhejiang Hospital, Hangzhou, 310013, People's Republic of China
| | - Guoyou Wu
- Department of Clinical Laboratory, Zhejiang Hospital, Hangzhou, 310013, People's Republic of China
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32
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Chang YC, Fong Y, Tsai EM, Chang YG, Chou HL, Wu CY, Teng YN, Liu TC, Yuan SS, Chiu CC. Exogenous C₈-Ceramide Induces Apoptosis by Overproduction of ROS and the Switch of Superoxide Dismutases SOD1 to SOD2 in Human Lung Cancer Cells. Int J Mol Sci 2018; 19:ijms19103010. [PMID: 30279365 PMCID: PMC6213533 DOI: 10.3390/ijms19103010] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2018] [Revised: 09/25/2018] [Accepted: 09/27/2018] [Indexed: 02/07/2023] Open
Abstract
Ceramides, abundant sphingolipids on the cell membrane, can act as signaling molecules to regulate cellular functions including cell viability. Exogenous ceramide has been shown to exert potent anti-proliferative effects against cancer cells, but little is known about how it affects reactive oxygen species (ROS) in lung cancer cells. In this study, we investigated the effect of N-octanoyl-D-erythro-sphingosine (C₈-ceramide) on human non-small-cell lung cancer H1299 cells. Flow cytometry-based assays indicated that C₈-ceramide increased the level of endogenous ROS in H1299 cells. Interestingly, the ratio of superoxide dismutases (SODs) SOD1 and SOD2 seem to be regulated by C₈-ceramide treatment. Furthermore, the accumulation of cell cycle G1 phase and apoptotic populations in C₈-ceramide-treated H1299 cells was observed. The results of the Western blot showed that C₈-ceramide causes a dramatically increased protein level of cyclin D1, a critical regulator of cell cycle G1/S transition. These results suggest that C₈-ceramide acts as a potent chemotherapeutic agent and may increase the endogenous ROS level by regulating the switch of SOD1 and SOD2, causing the anti-proliferation, and consequently triggering the apoptosis of NSCLC H1299 cells. Accordingly, our works may give a promising strategy for lung cancer treatment in the future.
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Affiliation(s)
- Yuli C Chang
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Yao Fong
- Chest Surgery, Chi-Mei Medical Center, Yung Kang City, Tainan 901, Taiwan.
| | - Eing-Mei Tsai
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Ya-Gin Chang
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Han Lin Chou
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Chang-Yi Wu
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;.
| | - Yen-Ni Teng
- Department of Biological Sciences and Technology, National University of Tainan, Tainan 700, Taiwan.
| | - Ta-Chih Liu
- Department of Laboratory Medicine, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Institute of Clinical Medicine, College of Medicine, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.
| | - Shyng-Shiou Yuan
- Translational Research Center, Cancer Center, Department of Medical Research, Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Chien-Chih Chiu
- Graduate Institute of Medicine, College of Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Biotechnology, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Department of Biological Sciences, National Sun Yat-Sen University, Kaohsiung 804, Taiwan;.
- Translational Research Center, Cancer Center, Department of Medical Research, Department of Obstetrics and Gynecology, Kaohsiung Medical University Hospital, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
- Research Center for Environment Medicine, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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β-TrCP-dependent degradation of ASK1 suppresses the induction of the apoptotic response by oxidative stress. Biochim Biophys Acta Gen Subj 2018; 1862:2271-2280. [DOI: 10.1016/j.bbagen.2018.07.015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Revised: 07/13/2018] [Accepted: 07/16/2018] [Indexed: 12/26/2022]
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Apoptosis signal-regulating kinase 1 inhibition attenuates human airway smooth muscle growth and migration in chronic obstructive pulmonary disease. Clin Sci (Lond) 2018; 132:1615-1627. [PMID: 30006481 PMCID: PMC6218165 DOI: 10.1042/cs20180398] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2018] [Revised: 07/03/2018] [Accepted: 07/10/2018] [Indexed: 12/19/2022]
Abstract
Increased airway smooth muscle (ASM) mass is observed in chronic obstructive pulmonary disease (COPD) which is correlated with disease severity and negatively impact lung function in these patients. Thus, there is clear unmet clinical need for finding new therapies which can target airway remodeling and disease progression in COPD. Apoptosis signal-regulating kinase 1 (ASK1) is a ubiquitously expressed mitogen-activated protein kinase kinase kinase (MAP3K) activated by various stress stimuli, including reactive oxygen species (ROS), tumor necrosis factor (TNF)-α, and lipopolysaccharide (LPS) and is known to regulate cell proliferation. ASM cells from COPD patients are hyper-proliferative to mitogens in vitro. However, the role of ASK1 in ASM growth is not established. Here, we aim to determine the effects of ASK1 inhibition on ASM growth and pro-mitogenic signaling using ASM cells from COPD patients. We found greater expression of ASK1 in ASM-bundles of COPD lung when compared with non-COPD. Pre-treatment of ASM cells with highly selective ASK1 inhibitor, TCASK10 resulted in a dose-dependent reduction in mitogen (FBS, PDGF and EGF; 72 hours)-induced ASM growth as measured by CyQuant assay. Further, molecular targeting of ASK1 using siRNA in ASM cells prevented mitogen-induced cell growth. In addition, to anti-mitogenic potential, ASK1 inhibitor also prevented TGFβ1-induced migration of ASM cells in vitro. Immunoblotting revealed that anti-mitogenic effects are mediated by JNK and p38MAP kinase-signaling pathways as evident by reduced phosphorylation of downstream effectors JNK1/2 and p38MAP kinases respectively with no effect on ERK1/2. Collectively, these findings establish the anti-mitogenic effect of ASK1 inhibition and identify a novel pathway that can be targeted to reduce or prevent excessive ASM mass in COPD.
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Wang J, He F, Chen L, Li Q, Jin S, Zheng H, Lin J, Zhang H, Ma S, Mei J, Yu J. Resveratrol inhibits pulmonary fibrosis by regulating miR-21 through MAPK/AP-1 pathways. Biomed Pharmacother 2018; 105:37-44. [PMID: 29843043 DOI: 10.1016/j.biopha.2018.05.104] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2018] [Revised: 05/16/2018] [Accepted: 05/21/2018] [Indexed: 01/06/2023] Open
Abstract
OBJECTIVE To explore the molecular mechanism of Res in regulation of pulmonary fibrosis (PF). METHODS Rats were injected with bleomycin (BLM) to establish a PF model and treated with resveratrol (Res) and/or miR-21 agomir. After 14 days, lung tissues were collected for Hematoxylin-eosin and Masson's staining, and real-time quantitative polymerase chain reaction and Western blot were performed to detect fibrosis-related protein expression and the activation of the TGF-β1/Smad pathway. In vitro, MRC-5 cells were pretreated with TGF-β1, Res, and/or miR-21 agomir. After 48 h, total soluble collagen was detected with a Sircol Soluble Collagen Assay. Subsequently, a miR-21 mimic was transfected into MRC-5 cells, and a luciferase reporter assay was employed to verify whether miR-21 targeted Smad7. RESULTS Res reversed the increased levels of miR-21 induced by BLM and alleviated serious PF symptoms, but agomiR-21 treatment effectively impaired the above manifestations. In vivo, miR-21 inhibited the decreases of TGF-β1 and p-Smad2/3 that were induced by Res. In vitro, miR-21 significantly disrupted the positive effect of Res on TGF-β-induced collagen deposition, as well as the levels of Fn, α-SMA, p-Smad2, and Smad7. In addition, Smad7 was found to be a direct target of miR-21-5p. TGF-β stimulation led to an enormous increase in p-c-Jun, c-Jun, and c-Fos, which were significantly reduced by Res. Finally, miR-21 sharply reduced the increased phosphorylation levels of ERK, JNK and p38 that were induced by Res. CONCLUSION Res inhibits BLM-induced PF by regulating miR-21 through MAPK/AP-1 pathways.
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Affiliation(s)
- Jing Wang
- Department of Rheumatology, The First People's Hospital of Yunnan Province, Kunming 650034, Yunnan Province, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, Yunnan Province, China
| | - Fang He
- Department of Rheumatology, The First People's Hospital of Yunnan Province, Kunming 650034, Yunnan Province, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, Yunnan Province, China
| | - Lingqiang Chen
- Department of Orthopaedics, The First Affiliated Hospital of Kunming Medical University, No. 295 Xichang Road, Kunming 650032, Yunnan Province, China.
| | - Qin Li
- Department of Rheumatology, The First People's Hospital of Yunnan Province, Kunming 650034, Yunnan Province, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, Yunnan Province, China
| | - Song Jin
- Department of Rheumatology, The First People's Hospital of Yunnan Province, Kunming 650034, Yunnan Province, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, Yunnan Province, China
| | - Hongmei Zheng
- Department of Rheumatology, The First People's Hospital of Yunnan Province, Kunming 650034, Yunnan Province, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, Yunnan Province, China
| | - Jun Lin
- Department of Rheumatology, The First People's Hospital of Yunnan Province, Kunming 650034, Yunnan Province, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, Yunnan Province, China
| | - Hong Zhang
- Department of Rheumatology, The First People's Hospital of Yunnan Province, Kunming 650034, Yunnan Province, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, Yunnan Province, China
| | - Sha Ma
- Department of Rheumatology, The First People's Hospital of Yunnan Province, Kunming 650034, Yunnan Province, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, Yunnan Province, China
| | - Jian Mei
- Department of Rheumatology, The First People's Hospital of Yunnan Province, Kunming 650034, Yunnan Province, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, Yunnan Province, China
| | - Juan Yu
- Department of Rheumatology, The First People's Hospital of Yunnan Province, Kunming 650034, Yunnan Province, China; The Affiliated Hospital of Kunming University of Science and Technology, Kunming 650034, Yunnan Province, China
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Kinoshita H, Hayakawa Y, Niu Z, Konishi M, Hata M, Tsuboi M, Hayata Y, Hikiba Y, Ihara S, Nakagawa H, Hirata Y, Wang TC, Koike K. Mature gastric chief cells are not required for the development of metaplasia. Am J Physiol Gastrointest Liver Physiol 2018; 314:G583-G596. [PMID: 29345968 PMCID: PMC6732738 DOI: 10.1152/ajpgi.00351.2017] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
During human gastric carcinogenesis, intestinal metaplasia is frequently seen in the atrophic stomach. In mice, a distinct type of metaplasia known as spasmolytic polypeptide-expressing metaplasia (SPEM) is found in several inflammatory and genetically engineered models. Given the diversity of long- and short-term models of mouse SPEM, it remains unclear whether all models have a shared or distinct molecular mechanism. The origin of SPEM in mice is presently under debate. It is postulated that stem or progenitor cells acquire genetic alterations that then supply metaplastic cell clones, whereas the possibility of transdifferentiation or dedifferentiation from mature gastric chief cells has also been suggested. In this study, we report that loss of chief cells was sufficient to induce short-term regenerative SPEM-like lesions that originated from chief cell precursors in the gastric neck region. Furthermore, Lgr5+ mature chief cells failed to contribute to both short- and long-term metaplasia, whereas isthmus stem and progenitor cells efficiently contributed to long-term metaplasia. Interestingly, multiple administrations of high-dose pulsed tamoxifen induced expansion of Lgr5 expression and Lgr5-CreERT recombination within the isthmus progenitors apart from basal chief cells. Thus we conclude that short-term SPEM represents a regenerative process arising from neck progenitors following chief cell loss, whereas true long-term SPEM originates from isthmus progenitors. Mature gastric chief cells may be dispensable for SPEM development. NEW & NOTEWORTHY Recently, dedifferentiation ability in gastric chief cells during metaplasia development has been proposed. Our findings reveal that lesions that were thought to be acute metaplasia in fact represent normal regeneration supplied from neck lineage and that isthmus stem/progenitors are more responsible for sustained metaplastic changes. Cellular plasticity in gastric chief cells may be more limited than recently highlighted.
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Affiliation(s)
- Hiroto Kinoshita
- 1Department of Gastroenterology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Yoku Hayakawa
- 1Department of Gastroenterology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Zhengchuan Niu
- 2Division of Digestive and Liver Diseases, Department of Medicine, Columbia University, New York, New York,4Department of General Surgery, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Mitsuru Konishi
- 1Department of Gastroenterology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Masahiro Hata
- 1Department of Gastroenterology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Mayo Tsuboi
- 1Department of Gastroenterology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Yuki Hayata
- 1Department of Gastroenterology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Yohko Hikiba
- 3Division of Gastroenterology, Institute for Adult Diseases, Asahi Life Foundation, Tokyo, Japan
| | - Sozaburo Ihara
- 3Division of Gastroenterology, Institute for Adult Diseases, Asahi Life Foundation, Tokyo, Japan
| | - Hayato Nakagawa
- 1Department of Gastroenterology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Yoshihiro Hirata
- 1Department of Gastroenterology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
| | - Timothy C. Wang
- 2Division of Digestive and Liver Diseases, Department of Medicine, Columbia University, New York, New York
| | - Kazuhiko Koike
- 1Department of Gastroenterology, Graduate School of Medicine, University of Tokyo, Tokyo, Japan
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Luo Y, Gao S, Hao Z, Yang Y, Xie S, Li D, Liu M, Zhou J. Apoptosis signal-regulating kinase 1 exhibits oncogenic activity in pancreatic cancer. Oncotarget 2018; 7:75155-75164. [PMID: 27655673 PMCID: PMC5342730 DOI: 10.18632/oncotarget.12090] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2016] [Accepted: 09/05/2016] [Indexed: 12/11/2022] Open
Abstract
Pancreatic cancer has an extremely grim prognosis, with an overall 5-year survival rate less than 5%, as a result of its rapid metastasis and late diagnosis. To combat this disease, it is crucial to better understand the molecular mechanisms that contribute to its pathogenesis. Herein, we report that apoptosis signal-regulating kinase 1 (ASK1) is overexpressed in pancreatic cancer tissues and that its expression correlates with the histological grade of pancreatic cancer. The expression of ASK1 is also elevated in pancreatic cancer cell lines at both protein and mRNA levels. In addition, ASK1 promotes the proliferation and stimulates the tumorigenic capacity of pancreatic cancer cells. These functions of ASK1 are abrogated by pharmacological inhibition of its kinase activity or by introduction of a kinase-dead mutation, suggesting that the kinase activity of ASK1 is required for its role in pancreatic cancer. However, the alteration of ASK1 expression or activity does not significantly affect the migration or invasion of pancreatic cancer cells. Collectively, these findings reveal a critical role for ASK1 in the development of pancreatic cancer and have important implications for the diagnosis and treatment of this malignancy.
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Affiliation(s)
- Youguang Luo
- Institute of Biomedical Sciences, College of Life Sciences, Key Laboratory of Animal Resistance Biology of Shandong Province, Key Laboratory of Molecular and Nano Probes of the Ministry of Education, Shandong Normal University, Jinan 250014, China.,State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Siqi Gao
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Ziwei Hao
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Yang Yang
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Songbo Xie
- Institute of Biomedical Sciences, College of Life Sciences, Key Laboratory of Animal Resistance Biology of Shandong Province, Key Laboratory of Molecular and Nano Probes of the Ministry of Education, Shandong Normal University, Jinan 250014, China
| | - Dengwen Li
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
| | - Min Liu
- Institute of Biomedical Sciences, College of Life Sciences, Key Laboratory of Animal Resistance Biology of Shandong Province, Key Laboratory of Molecular and Nano Probes of the Ministry of Education, Shandong Normal University, Jinan 250014, China
| | - Jun Zhou
- Institute of Biomedical Sciences, College of Life Sciences, Key Laboratory of Animal Resistance Biology of Shandong Province, Key Laboratory of Molecular and Nano Probes of the Ministry of Education, Shandong Normal University, Jinan 250014, China.,State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China
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38
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He P, Wang S, Zhang X, Gao Y, Niu W, Dong N, Shi X, Geng Y, Ma Q, Li M, Jiang B, Li JL. Tspan5 is an independent favourable prognostic factor and suppresses tumour growth in gastric cancer. Oncotarget 2018; 7:40160-40173. [PMID: 27223087 PMCID: PMC5130000 DOI: 10.18632/oncotarget.9514] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2016] [Accepted: 04/26/2016] [Indexed: 12/16/2022] Open
Abstract
Tetraspanins are believed to interact with specific partner proteins forming tetraspanin-enriched microdomains and regulate some aspects of partner protein functions. However, the role of Tspan5 during pathological processes, particularly in cancer biology, remains unknown. Here we report that Tspan5 is significantly downregulated in gastric cancer (GC) and closely associated with clinicopathological features including tumour size and TNM stage. The expression of Tspan5 is inversely correlated with patient overall survival and is an independent prognostic factor in GC. Upregulation of Tspan5 in tumour cells results in inhibition of cell proliferation and colony formation in vitro and suppression of xenograft growth of GC by reducing tumour cell proliferation in vivo. Thus, Tspan5 functions as a tumour suppressor in stomach to control the tumour growth. Mechanistically, Tspan5 inhibits the cell cycle transition from G1-S phase by increasing the expression of p27 and p15 and decreasing the expression of cyclin D1, CDK4, pRB and E2F1. The correlation of Tspan5 expression with the expression of p27, p15, cyclin D1, CDK4, pRB and E2F1 in vivo are also revealed in xenografted tumours. Reconstitution of either cyclin D1 or CDK4 in Tspan5-overexpressing GC cells rescues the inhibitory phenotype produced by Tspan5, suggesting that cyclin D1/CDK4 play a dominant role in mediating the suppression of tumour growth by Tspan5 in GC. Our results suggest that Tspan5 may serve as a prognostic biomarker for predicting outcome of GC patients and provide new insights into the pathogenesis of GC and rational for the development of clinical intervention strategies against GC.
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Affiliation(s)
- Peirong He
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China.,Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Suihai Wang
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Xuefeng Zhang
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Yanjun Gao
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Wenbo Niu
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Ningning Dong
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Xiangyi Shi
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Yan Geng
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Qiang Ma
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Ming Li
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China
| | - Bo Jiang
- Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou 510515, China
| | - Ji-Liang Li
- School of Biotechnology, Southern Medical University, Guangzhou 510515, China.,Institute of Translational and Stratified Medicine, Plymouth University Peninsula Schools of Medicine and Dentistry, Plymouth PL6 8BU, U.K
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Renz BW, Takahashi R, Tanaka T, Macchini M, Hayakawa Y, Dantes Z, Maurer HC, Chen X, Jiang Z, Westphalen CB, Ilmer M, Valenti G, Mohanta SK, Habenicht AJR, Middelhoff M, Chu T, Nagar K, Tailor Y, Casadei R, Di Marco M, Kleespies A, Friedman RA, Remotti H, Reichert M, Worthley DL, Neumann J, Werner J, Iuga AC, Olive KP, Wang TC. β2 Adrenergic-Neurotrophin Feedforward Loop Promotes Pancreatic Cancer. Cancer Cell 2018; 33:75-90.e7. [PMID: 29249692 PMCID: PMC5760435 DOI: 10.1016/j.ccell.2017.11.007] [Citation(s) in RCA: 251] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2017] [Revised: 08/09/2017] [Accepted: 11/10/2017] [Indexed: 02/06/2023]
Abstract
Catecholamines stimulate epithelial proliferation, but the role of sympathetic nerve signaling in pancreatic ductal adenocarcinoma (PDAC) is poorly understood. Catecholamines promoted ADRB2-dependent PDAC development, nerve growth factor (NGF) secretion, and pancreatic nerve density. Pancreatic Ngf overexpression accelerated tumor development in LSL-Kras+/G12D;Pdx1-Cre (KC) mice. ADRB2 blockade together with gemcitabine reduced NGF expression and nerve density, and increased survival of LSL-Kras+/G12D;LSL-Trp53+/R172H;Pdx1-Cre (KPC) mice. Therapy with a Trk inhibitor together with gemcitabine also increased survival of KPC mice. Analysis of PDAC patient cohorts revealed a correlation between brain-derived neurotrophic factor (BDNF) expression, nerve density, and increased survival of patients on nonselective β-blockers. These findings suggest that catecholamines drive a feedforward loop, whereby upregulation of neurotrophins increases sympathetic innervation and local norepinephrine accumulation.
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Affiliation(s)
- Bernhard W Renz
- Department of General, Visceral and Transplantation Surgery, Hospital of the University of Munich, 81377 Munich, Germany; Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Ryota Takahashi
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Takayuki Tanaka
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Marina Macchini
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA; Department of Oncology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Yoku Hayakawa
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA; Department of Gastroenterology, Graduate School of Medicine, The University of Tokyo, Tokyo 113-8655, Japan
| | - Zahra Dantes
- Department of Medicine II, Klinikum Rechts der Isar, Technische Universität München, 81675 Munich, Germany
| | - H Carlo Maurer
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Xiaowei Chen
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Zhengyu Jiang
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - C Benedikt Westphalen
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA; Department of Internal Medicine III, Hospital of the University of Munich, 81377 Munich, Germany
| | - Matthias Ilmer
- Department of General, Visceral and Transplantation Surgery, Hospital of the University of Munich, 81377 Munich, Germany
| | - Giovanni Valenti
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Sarajo K Mohanta
- Institute for Cardiovascular Prevention, University of Munich, 80336 Munich, Germany
| | - Andreas J R Habenicht
- Institute for Cardiovascular Prevention, University of Munich, 80336 Munich, Germany
| | - Moritz Middelhoff
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Timothy Chu
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Karan Nagar
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Yagnesh Tailor
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA
| | - Riccardo Casadei
- Department of Internal Medicine and Surgery (DIMEC), Alma Mater Studiorum, University of Bologna, Sant'Orsola-Malpighi Hospital, 40138 Bologna, Italy
| | - Mariacristina Di Marco
- Department of Experimental, Diagnostic and Specialty Medicine, University of Bologna, Sant'Orsola-Malpighi Hospital, 40138 Bologna, Italy
| | - Axel Kleespies
- Department of General, Visceral and Transplantation Surgery, Hospital of the University of Munich, 81377 Munich, Germany
| | - Richard A Friedman
- Biomedical Informatics Shared Resource, Herbert Irving Comprehensive Cancer Center, Department of Biomedical Informatics, Columbia University Medical Center, New York, NY 10032, USA
| | - Helen Remotti
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Maximilian Reichert
- Department of Medicine II, Klinikum Rechts der Isar, Technische Universität München, 81675 Munich, Germany
| | - Daniel L Worthley
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA; Department of Medicine, University of Adelaide, Adelaide, SA 5005, Australia
| | - Jens Neumann
- Department of Pathology, Hospital of the University of Munich, 81377 Munich, Germany
| | - Jens Werner
- Department of General, Visceral and Transplantation Surgery, Hospital of the University of Munich, 81377 Munich, Germany
| | - Alina C Iuga
- Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Kenneth P Olive
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA; Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY 10032, USA
| | - Timothy C Wang
- Department of Digestive and Liver Diseases and Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, 1130 St. Nicholas Avenue, New York, NY 10032, USA.
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The deubiquitinating enzyme TNFAIP3 mediates inactivation of hepatic ASK1 and ameliorates nonalcoholic steatohepatitis. Nat Med 2017; 24:84-94. [PMID: 29227477 DOI: 10.1038/nm.4453] [Citation(s) in RCA: 142] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2017] [Accepted: 11/06/2017] [Indexed: 02/06/2023]
Abstract
Activation of apoptosis signal-regulating kinase 1 (ASK1) in hepatocytes is a key process in the progression of nonalcoholic steatohepatitis (NASH) and a promising target for treatment of the condition. However, the mechanism underlying ASK1 activation is still unclear, and thus the endogenous regulators of this kinase remain open to be exploited as potential therapeutic targets. In screening for proteins that interact with ASK1 in the context of NASH, we identified the deubiquitinase tumor necrosis factor alpha-induced protein 3 (TNFAIP3) as a key endogenous suppressor of ASK1 activation, and we found that TNFAIP3 directly interacts with and deubiquitinates ASK1 in hepatocytes. Hepatocyte-specific ablation of Tnfaip3 exacerbated nonalcoholic fatty liver disease- and NASH-related phenotypes in mice, including glucose metabolism disorders, lipid accumulation and enhanced inflammation, in an ASK1-dependent manner. In contrast, transgenic or adeno-associated virus-mediated TNFAIP3 gene delivery in the liver in both mouse and nonhuman primate models of NASH substantially blocked the onset and progression of the disease. These results implicate TNFAIP3 as a functionally important endogenous suppressor of ASK1 hyperactivation in the pathogenesis of NASH and identify it as a potential new molecular target for NASH therapy.
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41
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Apoptosis signal-regulating kinase 1 mediates the inhibitory effect of hepatocyte nuclear factor-4α on hepatocellular carcinoma. Oncotarget 2017; 7:27408-21. [PMID: 27050273 PMCID: PMC5053659 DOI: 10.18632/oncotarget.8478] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2015] [Accepted: 03/16/2016] [Indexed: 12/24/2022] Open
Abstract
Previous studies provided substantial evidence of a striking suppressive effect of hepatocyte nuclear factor 4α (HNF4α) on hepatocellular carcinoma (HCC). Apoptosis signal-regulating kinase 1 (ASK1) is involved in death receptor-mediated apoptosis and may acts as a tumor suppressor in hepatocarcinogenesis. However, the status and function of ASK1 during HCC progression are unclear. In this study, we found that HNF4α increased ASK1 expression by directly binding to its promoter. ASK1 expression was dramatically suppressed and correlated with HNF4α levels in HCC tissues. Reduced ASK1 expression was associated with aggressive tumors and poor prognosis for human HCC. Moreover, ASK1 inhibited the malignant phenotype of HCC cells in vitro. Intratumoral ASK1 injection significantly suppressed the growth of subcutaneous HCC xenografts in nude mice. More interestingly, systemic ASK1 delivery strikingly inhibited the growth of orthotopic HCC nodules in NOD/SCID mice. In addition, inhibition of endogenous ASK1 partially reversed the suppressive effects of HNF4α on HCC. Collectively, this study highlights the suppressive effect of ASK1 on HCC and its biological significance in HCC development. These outcomes broaden the knowledge of ASK1 function in HCC progression, and provide a novel potential prognostic biomarker and therapeutic target for advanced HCC.
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Fujisawa T. Therapeutic application of apoptosis signal-regulating kinase 1 inhibitors. Adv Biol Regul 2017; 66:85-90. [PMID: 29066277 DOI: 10.1016/j.jbior.2017.10.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 10/13/2017] [Accepted: 10/13/2017] [Indexed: 06/07/2023]
Abstract
Apoptosis signal-regulating kinase 1 (ASK1) is a member of the stress-activated mitogen-activated protein kinase kinase kinase (MAP3K) family. ASK1 is an attractive drug target, owing to its essential role in a wide variety of human diseases including neurodegenerative disorders, inflammatory diseases and cancer. Recent studies have suggested that pharmacological manipulations using small molecule ASK1 inhibitors may be beneficial in experimental human disease models. In this review, we highlight the current understanding of ASK1 inhibitors as a potential therapy for human diseases.
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Affiliation(s)
- Takao Fujisawa
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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43
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Rusnak L, Fu H. Regulation of ASK1 signaling by scaffold and adaptor proteins. Adv Biol Regul 2017; 66:23-30. [PMID: 29102394 DOI: 10.1016/j.jbior.2017.10.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2017] [Revised: 10/12/2017] [Accepted: 10/13/2017] [Indexed: 06/07/2023]
Abstract
The mitogen-activated protein kinase (MAPK) signaling pathway is a three-tiered kinase cascade where mitogen-activated protein kinase kinase kinases (MAP3Ks) lead to the activation of mitogen-activated protein kinase kinases (MAP2K), and ultimately MAPK proteins. MAPK signaling can promote a diverse set of biological outcomes, ranging from cell death to proliferation. There are multiple mechanisms which govern MAPK output, such as the duration and strength of the signal, cellular localization to upstream and downstream binding partners, pathway crosstalk and the binding to scaffold and adaptor molecules. This review will focus on scaffold and adaptor proteins that bind to and regulate apoptosis signal-regulating kinase 1 (ASK1), a MAP3K protein with a critical role in mediating stress response pathways.
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Affiliation(s)
- Lauren Rusnak
- Department of Pharmacology and Emory Chemical Biology Discovery Center, Emory University, Atlanta, GA 30322, USA; Graduate Program in Cancer Biology, Emory University, Atlanta, GA 30322, USA.
| | - Haian Fu
- Department of Pharmacology and Emory Chemical Biology Discovery Center, Emory University, Atlanta, GA 30322, USA; Graduate Program in Cancer Biology, Emory University, Atlanta, GA 30322, USA; Department of Hematology & Medical Oncology, Emory University, Atlanta, GA 30322, USA; Winship Cancer Institute, Emory University, Atlanta, GA 30322, USA
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44
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Ryuno H, Naguro I, Kamiyama M. ASK family and cancer. Adv Biol Regul 2017; 66:72-84. [PMID: 28552579 DOI: 10.1016/j.jbior.2017.05.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Revised: 05/17/2017] [Accepted: 05/17/2017] [Indexed: 06/07/2023]
Abstract
Cancer is a major problem in public health and is one of the leading causes of mortality worldwide. Many types of cancer cells exhibit aberrant cellular signal transduction in response to stress, which often leads to oncogenesis. Mitogen-activated protein kinase (MAPK) signal cascades are one of the important intracellular stress signaling pathways closely related to cancer. The key molecules in MAPK signal cascades that respond to various types of stressors are apoptosis signal-regulating kinase (ASK) family members; ASK1, ASK2 and ASK3. ASK family members are activated by a wide variety of stressors, and they regulate various cellular responses, such as cell proliferation, inflammation and apoptosis. In this review, we will discuss both the oncogenic and anti-oncogenic roles of the ASK family members in various contexts of cancer development with deeper insights into the involvement of ASK family members in cancer pathology.
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Affiliation(s)
- Hiroki Ryuno
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Isao Naguro
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan
| | - Miki Kamiyama
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
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45
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Luo Y, Wang C, Yong P, Ye P, Liu Z, Fu Z, Lu F, Xiang W, Tan W, Xiao J. Decreased expression of the long non-coding RNA SLC7A11-AS1 predicts poor prognosis and promotes tumor growth in gastric cancer. Oncotarget 2017; 8:112530-112549. [PMID: 29348845 PMCID: PMC5762530 DOI: 10.18632/oncotarget.22486] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2016] [Accepted: 09/30/2017] [Indexed: 12/26/2022] Open
Abstract
Many lncRNA and mRNA sense-antisense transcripts have been systematically identified in malignant cells. However, the molecular mechanisms of most lncRNA-mRNA pairs in gastric cancer remain largely unknown. We found the gastric cancer-associated lncRNA SLC7A11-AS1 and coding transcript mRNA SLC7A11 in human gastric cancer specimens by microarray. SLC7A11-AS1, antisense to SLC7A11, is significantly down-regulated in gastric cancer and could promote tumor growth in vitro and in vivo. The effects of SLC7A11-AS1 depend on the regulation of SLC7A11 via the ASK1-p38MAPK/JNK signaling pathway. These findings suggest that decreased expression of SLC7A11-AS1 contributes to the progression of gastric cancer and may be a novel diagnostic biomarker and effective therapeutic target in gastric cancer patients.
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Affiliation(s)
- Yajun Luo
- The Department of Gastrointestinal Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Cheng Wang
- The Department of Pediatric Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Peng Yong
- The Department of HPB Surgery, Nanchong Central Hospital, The Second Clinical Medical College of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Pengcheng Ye
- The Department of Gastrointestinal Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Zilin Liu
- The Department of Gastrointestinal Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Zhiming Fu
- The Department of Gastrointestinal Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Fei Lu
- The Department of Gastrointestinal Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Wanping Xiang
- The Department of Gastrointestinal Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Wang Tan
- The Department of Gastrointestinal Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China
| | - Jiangwei Xiao
- The Department of Gastrointestinal Surgery, The Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, People's Republic of China.,The Department of General Surgery, Chengdu First People's Hospital, Chengdu, Sichuan, People's Republic of China
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46
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Kinoshita H, Hayakawa Y, Koike K. Metaplasia in the Stomach-Precursor of Gastric Cancer? Int J Mol Sci 2017; 18:ijms18102063. [PMID: 28953255 PMCID: PMC5666745 DOI: 10.3390/ijms18102063] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2017] [Revised: 09/23/2017] [Accepted: 09/25/2017] [Indexed: 02/07/2023] Open
Abstract
Despite a significant decrease in the incidence of gastric cancer in Western countries over the past century, gastric cancer is still one of the leading causes of cancer-related deaths worldwide. Most human gastric cancers develop after long-term Helicobacter pylori infection via the Correa pathway: the progression is from gastritis, atrophy, intestinal metaplasia, dysplasia, to cancer. However, it remains unclear whether metaplasia is a direct precursor of gastric cancer or merely a marker of high cancer risk. Here, we review human studies on the relationship between metaplasia and cancer in the stomach, data from mouse models of metaplasia regarding the mechanism of metaplasia development, and the cellular responses induced by H. pylori infection.
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Affiliation(s)
- Hiroto Kinoshita
- Graduate School of Medicine, Department of Gastroenterology, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Yoku Hayakawa
- Graduate School of Medicine, Department of Gastroenterology, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
| | - Kazuhiko Koike
- Graduate School of Medicine, Department of Gastroenterology, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo 113-8655, Japan.
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Wang C, Niu W, Chen H, Shi N, He D, Zhang M, Ge L, Tian Z, Qi M, Chen T, Tang X. Nicotine suppresses apoptosis by regulating α7nAChR/Prx1 axis in oral precancerous lesions. Oncotarget 2017; 8:75065-75075. [PMID: 29088845 PMCID: PMC5650400 DOI: 10.18632/oncotarget.20506] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Accepted: 07/29/2017] [Indexed: 11/25/2022] Open
Abstract
Nicotine, a tumor promoter in tobacco, can increase Peroxiredoxin (Prx1) and nicotinic acetylcholine receptors (nAChRs) in oral squamous cell carcinoma (OSCC). In the present study, we investigate the effects of nicotine in oral precancerous lesions focusing on apoptosis and nAChR/Prx1 signaling. We detected expression of Prx1, α3nAChR, α7nAChR, phosphorylation of mitogen-activated protein kinases (MAPK) and apoptosis in dysplastic oral keratinocyte (DOK) cells as well as in 4-nitroquinoline 1-oxide (4NQO) or 4NQO + nicotine – induced oral precancerous lesions in Prx1 wild-type (Prx1+/+) and Prx1 knockdown (Prx1+/-) mice. In DOK cells, Prx1 knockdown and blocking α7nAChR activated apoptosis, and nicotine increased the expression of Prx1, α3nAChR and α7nAChR, and inhibited MAPK activation. Moreover, nicotine suppressed apoptosis depending on Prx1 and α7nAChR in DOK cells. In animal bioassay, nicotine and Prx1 promoted growth of 4NQO-induced precancerous lesions in mouse tongue. 4NQO plus nicotine suppressed MAPK activation in Prx1 wild-type mice but not in Prx1 knockdown mice. Our data demonstrate that nicotine inhibits cell apoptosis and promotes the growth of oral precancerous lesions via regulating α7nAChR/Prx1 during carcinogenesis of OSCC.
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Affiliation(s)
- Chunxiao Wang
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Key Laboratory, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Wenwen Niu
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Key Laboratory, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Hui Chen
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Key Laboratory, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Ni Shi
- Division of Medical Oncology, Department of Internal Medicine, The Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH, USA
| | - Dian He
- Department of Epidemiology and Health Statistics, School of Public Health, Capital Medical University, Beijing, China
| | - Min Zhang
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Key Laboratory, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Lihua Ge
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Key Laboratory, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Zhenchuan Tian
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Key Laboratory, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Moci Qi
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Key Laboratory, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
| | - Tong Chen
- Division of Medical Oncology, Department of Internal Medicine, The Arthur G. James Cancer Hospital and Richard J. Solove Research Institute, The Ohio State University, Columbus, OH, USA
| | - Xiaofei Tang
- Division of Oral Pathology, Beijing Institute of Dental Research, Beijing Key Laboratory, Beijing Stomatological Hospital & School of Stomatology, Capital Medical University, Beijing, China
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Zhuang S, Jian YM, Sun YN. Inhibition of N-methyl-N-nitrosourea-induced gastric tumorigenesis by Liuwei Dihuang Pill in db/db mice. World J Gastroenterol 2017; 23:4233-4242. [PMID: 28694663 PMCID: PMC5483497 DOI: 10.3748/wjg.v23.i23.4233] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/08/2017] [Revised: 03/30/2017] [Accepted: 05/09/2017] [Indexed: 02/06/2023] Open
Abstract
AIM To investigate the inhibitory effect of Liuwei Dihuang Pill (LDP) on gastric tumorigenesis induced by N-methyl-N-nitrosourea (MNU) in diabetic mice.
METHODS Four-week-old mice were divided into four groups: A, 12 db/m mice treated with MNU and saline, as the non-diabetic control; B, 12 db/db mice treated with MNU and saline, as the diabetic control; C, 12 db/db mice treated with MNU and metformin, as the positive control; and D, 12 db/db mice treated with MNU and LDP. MNU was administrated for 20 wk to induce gastric carcinogenesis. LDP was administrated for 10 wk for improvement of insulin resistance. Body weight and food intake were measured every week. Blood samples were collected for assays of fasting blood glucose, insulin, insulin-like growth factor (IGF)-1, adiponectin and leptin. Stomach tissues were collected for histopathological analysis, immunohistochemical staining of Ki67, quantitative reverse transcription-polymerase chain reaction and western blotting.
RESULTS The incidence of MNU-induced gastric dysplasia was significantly elevated in diabetic (db/db) mice relative to the control (db/m) mice. The incidence of gastric dysplasia was significantly reduced by LDP with suppression of cell proliferation, as demonstrated by a decrease in Ki67 staining. Hyperglycemia, hyperinsulinemia and serum IGF-1 were inhibited by LDP. Expression of IGF-1 and insulin receptor mRNAs was decreased, phosphorylation of IGF-1 receptor and AKT protein was reduced in the stomach tissues by LDP. In addition, adiponectin was increased and leptin was decreased in the serum by LDP.
CONCLUSION LDP decreased risk of gastric dysplasia in type 2 diabetic mice by down-regulation of IGF and insulin activity and correction of adipokines disorders.
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49
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Nishida T, Hattori K, Watanabe K. The regulatory and signaling mechanisms of the ASK family. Adv Biol Regul 2017; 66:2-22. [PMID: 28669716 DOI: 10.1016/j.jbior.2017.05.004] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2017] [Revised: 05/17/2017] [Accepted: 05/17/2017] [Indexed: 01/05/2023]
Abstract
Apoptosis signal-regulating kinase 1 (ASK1) was identified as a MAP3K that activates the JNK and p38 pathways, and subsequent studies have reported ASK2 and ASK3 as members of the ASK family. The ASK family is activated by various intrinsic and extrinsic stresses, including oxidative stress, ER stress and osmotic stress. Numerous lines of evidence have revealed that members of the ASK family are critical for signal transduction systems to control a wide range of stress responses such as cell death, differentiation and cytokine induction. In this review, we focus on the precise signaling mechanisms of the ASK family in response to diverse stressors.
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Affiliation(s)
- Takuto Nishida
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan
| | - Kazuki Hattori
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan.
| | - Kengo Watanabe
- Laboratory of Cell Signaling, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Japan.
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50
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Weijman JF, Kumar A, Jamieson SA, King CM, Caradoc-Davies TT, Ledgerwood EC, Murphy JM, Mace PD. Structural basis of autoregulatory scaffolding by apoptosis signal-regulating kinase 1. Proc Natl Acad Sci U S A 2017; 114:E2096-E2105. [PMID: 28242696 PMCID: PMC5358389 DOI: 10.1073/pnas.1620813114] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Apoptosis signal-regulating kinases (ASK1-3) are apical kinases of the p38 and JNK MAP kinase pathways. They are activated by diverse stress stimuli, including reactive oxygen species, cytokines, and osmotic stress; however, a molecular understanding of how ASK proteins are controlled remains obscure. Here, we report a biochemical analysis of the ASK1 kinase domain in conjunction with its N-terminal thioredoxin-binding domain, along with a central regulatory region that links the two. We show that in solution the central regulatory region mediates a compact arrangement of the kinase and thioredoxin-binding domains and the central regulatory region actively primes MKK6, a key ASK1 substrate, for phosphorylation. The crystal structure of the central regulatory region reveals an unusually compact tetratricopeptide repeat (TPR) region capped by a cryptic pleckstrin homology domain. Biochemical assays show that both a conserved surface on the pleckstrin homology domain and an intact TPR region are required for ASK1 activity. We propose a model in which the central regulatory region promotes ASK1 activity via its pleckstrin homology domain but also facilitates ASK1 autoinhibition by bringing the thioredoxin-binding and kinase domains into close proximity. Such an architecture provides a mechanism for control of ASK-type kinases by diverse activators and inhibitors and demonstrates an unexpected level of autoregulatory scaffolding in mammalian stress-activated MAP kinase signaling.
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Affiliation(s)
- Johannes F Weijman
- Biochemistry Department, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand
| | - Abhishek Kumar
- Biochemistry Department, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand
| | - Sam A Jamieson
- Biochemistry Department, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand
| | - Chontelle M King
- Biochemistry Department, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand
| | | | - Elizabeth C Ledgerwood
- Biochemistry Department, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand
| | - James M Murphy
- The Walter and Eliza Hall Institute of Medical Research, Parkville, VIC 3052, Australia
- Department of Medical Biology, University of Melbourne, Parkville, VIC 3052, Australia
| | - Peter D Mace
- Biochemistry Department, School of Biomedical Sciences, University of Otago, Dunedin 9054, New Zealand;
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