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He J, Liu H, Li Z, Xu M, Zhang Y, Jiang T, Mo L. Integrated transcriptomic and metabolomic analysis of the hepatotoxicity of dichloroacetonitrile. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 927:172237. [PMID: 38582105 DOI: 10.1016/j.scitotenv.2024.172237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Revised: 03/11/2024] [Accepted: 04/03/2024] [Indexed: 04/08/2024]
Abstract
Dichloroacetonitrile (DCAN), an emerged nitrogenous disinfection by-product (N-DBP) in drinking water, has garnered attention owing to its strong cytotoxicity, genotoxicity, and carcinogenicity. However, there are limited studies on its potential hepatotoxicity mechanisms. Understanding hepatotoxicity is essential in order to identify and assess the potential risks posed by environmental pollutants on liver health and to safeguard public health. Here, we investigated the viability, reactive oxygen species (ROS) levels, and cell cycle profile of DCAN-exposed HepG2 cells and analyzed the mechanism of DCAN-induced hepatotoxicity using both transcriptomic and metabolomic techniques. The study revealed that there was a decrease in cell viability, increase in ROS production, and increase in the number of cells in the G2/M phase with an increase in the concentration of DCAN. Omics analyses showed that DCAN exposure increased cellular ROS levels, leading to oxidative damage in hepatocytes, which further induced DNA damage, cell cycle arrest, and cell growth impairment. Thus, DCAN has significant toxic effects on hepatocytes. Integrated analysis of transcriptomics and metabolomics offers new insights into the mechanisms of DCAN-induced hepatoxicity.
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Affiliation(s)
- Jinfeng He
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
| | - Hongyan Liu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China.
| | - Zemeng Li
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
| | - Minhua Xu
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
| | - Yong Zhang
- Guangxi Key Laboratory of Molecular Medicine in Liver Injury and Repair, The Affiliated Hospital of Guilin Medical University, Guilin 541001, China
| | - Tiemin Jiang
- College of Chemistry and Bioengineering, Guilin University of Technology, Guilin 541006, China
| | - Lingyun Mo
- College of Environmental Science and Engineering, Guilin University of Technology, Guilin 541006, China
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Wang W, Hua S, Li J, Zhao J, Zhang Y, Jiang J, Han B. Tumour microenvironment landscape and immunotherapy response in bladder cancer decoded by stromal MOXD1 based on copper-related genes signature. Front Oncol 2022; 12:1081091. [PMID: 36620542 PMCID: PMC9815449 DOI: 10.3389/fonc.2022.1081091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2022] [Accepted: 11/30/2022] [Indexed: 12/24/2022] Open
Abstract
Introduction We aimed to develop a copper-related gene (CRG) signature that can be used to evaluate prognosis and guide therapeutic management in bladder cancer patients. Methods The raw transcriptome profiles and clinical data of 405 bladder samples were downloaded from The Cancer Genome Atlas (TCGA) database, and differentially expressed copper-related genes were identifified using the Molecular Signatures Database (MSigDB) database and univariate and multivariate Cox regression analysis. A multigene prognostic signature based on 14 CRGs was developed by least absolute shrinkage and selection operation (LASSO) analysis in the TCGA cohort and validated in the Gene Expression Omnibus (GEO) cohort. Multiple analyses were then conducted in which the nomograms, clinicopathological features, immune-related cell infifiltration characteristics, and therapy responses of the high- and low-risk score groups were compared. Results A 14 CRGs signature was constructed and used to classify patients into high-risk and low-risk groups. Compared to patients classifified as high-risk, low-risk patients in both the TCGA cohort and the GEO cohort had better overall survival. Patients in high-risk groups had more aggressive clinical features, immunologically "cold" infifiltrating characteristics, and experienced lower therapeutic effificacy. We identifified a CRG signature of bladder cancer and validated it using unsupervised clustering analysis. Monooxygenase DBH-like 1 (MOXD1) was further identifified, and its potential for evaluating the tumor immune microenvironment and predicting the immunotherapy response was explored. Discussion These results suggest a novel research direction for precision therapy of bladder cancer and demonstrate that copper-related genes can play a promising role in predicting prognosis and may serve as therapeutic targets for bladder cancer.
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Affiliation(s)
| | | | | | | | | | | | - Bangmin Han
- *Correspondence: Juntao Jiang, ; Bangmin Han,
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3
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Si C, Zhou X, Deng J, Ye S, Kong L, Zhang B, Wang W. Role of ferroptosis in gastrointestinal tumors: From mechanisms to therapies. Cell Biol Int 2022; 46:997-1008. [PMID: 35476364 DOI: 10.1002/cbin.11804] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Revised: 02/16/2022] [Accepted: 03/24/2022] [Indexed: 01/01/2023]
Abstract
Ferroptosis is an iron-dependent nonapoptotic regulated cell death, which is mainly caused by an abnormal increase in lipid oxygen free radicals and an imbalance in redox homeostasis. Recently, ferroptosis has been shown to have implications in various gastrointestinal cancers, such as gastric carcinoma, hepatocellular carcinoma, and pancreatic cancer. This review summarises the latest research on ferroptosis, its mechanism of action, and its role in the progression of different gastrointestinal tumors to provide more information regarding the prevention and treatment of these tumors.
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Affiliation(s)
- Chenli Si
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, China
| | - Xiang Zhou
- Department of Breast Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
| | - Jie Deng
- Key Laboratory of Diagnosis and Treatment of Severe Hepato-Pancreatic Diseases of Zhejiang Province, The First Affiliated Hospital, Wenzhou Medical University, Wenzhou, China
| | - Shijie Ye
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, China
| | - Lingming Kong
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, China
| | - Baofu Zhang
- The First Clinical Medical College, Wenzhou Medical University, Wenzhou, China
| | - Weiming Wang
- Department of Hepatopancreatobiliary Surgery, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang, China
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Romualdo GR, Silva EDA, Da Silva TC, Aloia TPA, Nogueira MS, De Castro IA, Vinken M, Barbisan LF, Cogliati B. Burdock (Arctium lappa L.) root attenuates preneoplastic lesion development in a diet and thioacetamide-induced model of steatohepatitis-associated hepatocarcinogenesis. ENVIRONMENTAL TOXICOLOGY 2020; 35:518-527. [PMID: 31804025 DOI: 10.1002/tox.22887] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/22/2019] [Revised: 11/18/2019] [Accepted: 11/24/2019] [Indexed: 06/10/2023]
Abstract
Nonalcoholic steatohepatitis (NASH) is considered growing risk factor for hepatocellular carcinoma development in high-income countries. Diet- and chemically induced rodent models have been applied for the translational study of NASH-associated hepatocarcinogenesis due to their morphological and molecular similarities to the corresponding human disease. Arctium lappa L. (burdock) root tea has been extensively consumed in Traditional Chinese Medicine due to its potential therapeutic properties. Indeed, the bioactive compounds of A. lappa root, as the polyphenols, have already showed antioxidant and anti-inflammatory properties in different in vivo and in vitro bioassays. In this study, we investigated whether burdock root ethanolic extract (BRE) administration attenuates NASH-associated hepatocarcinogenesis. Eight-week-old male Wistar rats received choline-deficient high-fat diet for 8 weeks and multiple thioacetamide doses for 4 weeks in order to induce NASH and preneoplastic glutathione-S-transferase pi (GST-P)+ preneoplastic foci. Subsequently, rats were treated with BRE (100 or 200 mg/kg body weight) or vehicle by oral gavage for 2 weeks. BRE displayed high levels of chlorogenic and caffeic acids and BRE administration reduced total fatty acid and lipid hydroperoxide levels, while increasing the activities of antioxidant superoxide dismutase and catalase enzymes in the liver. Furthermore, burdock intervention diminished the size of GST-P+ remodeling preneoplastic lesions (PNLs) and displayed a trend on reducing hepatocyte proliferation (Ki-67) inside them. These findings suggest that short-term exposure to BRE alleviated remodeling PNL development in NASH-associated hepatocarcinogenesis.
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Affiliation(s)
- Guilherme R Romualdo
- Department of Pathology, Botucatu Medical School, São Paulo State University (UNESP), Botucatu, Brazil
| | - Elizangela Dos Anjos Silva
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, Brazil
| | - Tereza C Da Silva
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, Brazil
| | - Thiago P A Aloia
- Experimental Research Center, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Marina S Nogueira
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Inar A De Castro
- Department of Food and Experimental Nutrition, Faculty of Pharmaceutical Sciences, University of São Paulo (USP), São Paulo, Brazil
| | - Mathieu Vinken
- Department of in vitro Toxicology and Dermato-Cosmetology, Faculty of Medicine and Pharmacy, Vrije Universiteit Brussel (VUB), Brussels, Belgium
| | - Luís F Barbisan
- Department of Morphology, Biosciences Institute, São Paulo State University (UNESP), Botucatu, Brazil
| | - Bruno Cogliati
- Department of Pathology, School of Veterinary Medicine and Animal Science, University of São Paulo (USP), São Paulo, Brazil
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Romualdo GR, Grassi TF, Goto RL, Tablas MB, Bidinotto LT, Fernandes AAH, Cogliati B, Barbisan LF. An integrative analysis of chemically-induced cirrhosis-associated hepatocarcinogenesis: Histological, biochemical and molecular features. Toxicol Lett 2017; 281:84-94. [PMID: 28943392 DOI: 10.1016/j.toxlet.2017.09.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 08/29/2017] [Accepted: 09/20/2017] [Indexed: 12/17/2022]
Abstract
This study aimed the integrative characterization of morphological, biochemical and molecular features of chemically-induced cirrhosis-associated hepatocarcinogenesis. Thus, male Wistar rats were submitted to a diethylnitrosamine (DEN)/thioacetamide (TAA)-induced model. Liver tissue was processed for global gene expression, histopathological and collagen evaluations; as well as immunohistochemical and oxidative stress analysis. Gene Ontology and functional analysis showed the upregulation of extracellular matrix deposition genes, such as collagen type I alpha 1 and 2 (Col1α1 and Col1α2) and tissue inhibitor of metalloproteinase 1 and 2 genes (Timp1 and Timp2). In agreement these findings, animals presented extensive liver cirrhosis with increased collagen deposition (Sirius red). Besides, the animals developed many glutathione S-transferase pi (GST-P)-positive preneoplastic lesions showing high cell proliferation (Ki-67), in keeping with the Gstp1 and Gstp2 increased gene expression. DEN/TAA-treated rats also showed the upregulation of tumorigenesis-related annexin A2 gene (Anxa2) and few neoplastic lesions (hepatocellular adenomas, carcinomas, and cholangiocarcinoma). In contrast, gene expression and activity of antioxidant enzymes were decreased (glutathione peroxidase, total glutathione-S-transferase, and catalase). The model featured remarkable similarities to human hepatocarcinogenesis. Our findings could bring up new molecular insights into cirrhosis-associated hepatocarcinogenesis, and provide a suitable animal model for the establishment of further diagnostic, preventive and therapeutic approaches.
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Affiliation(s)
- Guilherme Ribeiro Romualdo
- Department of Pathology, Botucatu Medical School, São Paulo State University (UNESP), Botucatu - SP, Brazil
| | - Tony Fernando Grassi
- Department of Morphology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu - SP, Brazil
| | - Renata Leme Goto
- Department of Morphology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu - SP, Brazil
| | - Mariana Baptista Tablas
- Department of Morphology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu - SP, Brazil
| | - Lucas Tadeu Bidinotto
- Molecular Oncology Research Center, Barretos Cancer Hospital, Barretos - SP, Brazil; Barretos School of Health Sciences, Dr. Paulo Prata - FACISB, Barretos - SP, Brazil
| | - Ana Angélica Henrique Fernandes
- Department of Chemistry and Biochemistry, Institute of Biosciences, São Paulo State University (UNESP), Botucatu - SP, Brazil
| | - Bruno Cogliati
- Department of Pathology, School of Veterinary Medicine and Animal Science, São Paulo University (USP), São Paulo - SP, Brazil
| | - Luís Fernando Barbisan
- Department of Morphology, Institute of Biosciences, São Paulo State University (UNESP), Botucatu - SP, Brazil.
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Kindrat I, Tryndyak V, de Conti A, Shpyleva S, Mudalige TK, Kobets T, Erstenyuk AM, Beland FA, Pogribny IP. MicroRNA-152-mediated dysregulation of hepatic transferrin receptor 1 in liver carcinogenesis. Oncotarget 2016; 7:1276-87. [PMID: 26657500 PMCID: PMC4811459 DOI: 10.18632/oncotarget.6004] [Citation(s) in RCA: 56] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2015] [Accepted: 10/06/2015] [Indexed: 02/06/2023] Open
Abstract
Over-expression of transferrin receptor 1 (TFRC) is observed in hepatocellular carcinoma (HCC); however, there is a lack of conclusive information regarding the mechanisms of this dysregulation. In the present study, we demonstrated a significant increase in the levels of TFRC mRNA and protein in preneoplastic livers from relevant experimental models of human hepatocarcinogenesis and in human HCC cells. Additionally, using the TCGA database, we demonstrated an over-expression of TFRC in human HCC tissue samples and a markedly decreased level of microRNA-152 (miR-152) when compared to non-tumor liver tissue. The results indicated that the increase in levels of TFRC in human HCC cells and human HCC tissue samples may be attributed, in part, to a post-transcriptional mechanism mediated by a down-regulation of miR-152. This was evidenced by a strong inverse correlation between the level of TFRC and the expression of miR-152 in human HCC cells (r = −0.99, p = 4. 7 × 10−9), and was confirmed by in vitro experiments showing that transfection of human HCC cell lines with miR-152 effectively suppressed TFRC expression. This suggests that miR-152-specific targeting of TFRC may provide a selective anticancer therapeutic approach for the treatment of HCC.
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Affiliation(s)
- Iryna Kindrat
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA.,Department of Biological and Medical Chemistry, Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine
| | - Volodymyr Tryndyak
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Aline de Conti
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Svitlana Shpyleva
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Thilak K Mudalige
- Office of Regulatory Affairs, Arkansas Regional Laboratory, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Tetyana Kobets
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Anna M Erstenyuk
- Department of Biological and Medical Chemistry, Ivano-Frankivsk National Medical University, Ivano-Frankivsk, Ukraine
| | - Frederick A Beland
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
| | - Igor P Pogribny
- Division of Biochemical Toxicology, National Center for Toxicological Research, U.S. Food and Drug Administration, Jefferson, AR, USA
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7
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Abe H, Ogawa T, Wang L, Kimura M, Tanaka T, Morita R, Yoshida T, Shibutani M. Promoter-region hypermethylation and expression downregulation of Yy1 (Yin yang 1) in preneoplastic liver lesions in a thioacetamide rat hepatocarcinogenesis model. Toxicol Appl Pharmacol 2014; 280:467-74. [DOI: 10.1016/j.taap.2014.08.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Revised: 07/16/2014] [Accepted: 08/12/2014] [Indexed: 01/01/2023]
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8
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Imamura T, Hirayama T, Tsuruma K, Shimazawa M, Nagasawa H, Hara H. Hydroxyl radicals cause fluctuation in intracellular ferrous ion levels upon light exposure during photoreceptor cell death. Exp Eye Res 2014; 129:24-30. [PMID: 25447561 DOI: 10.1016/j.exer.2014.10.019] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2014] [Revised: 10/01/2014] [Accepted: 10/24/2014] [Indexed: 12/21/2022]
Abstract
Iron accumulation is a potential pathogenic event often seen in age-related macular degeneration (AMD) patients. In this study, we focused on the relationship between AMD pathology and concentrations of ferrous ion, which is a highly reactive oxygen generator in biological systems. Murine cone-cells-derived 661 W cells were exposed to white fluorescence light at 2500 lx for 1, 3, 6, or 12 h. Levels of ferrous ions, reactive oxygen species (ROS), and hydroxyl radicals were detected by RhoNox-1, a novel fluorescent probe for the selective detection of ferrous ion, 5-(and-6)-chloromethyl-2',7'-dichlorodihydrofluorescein diacetate, acetyl ester (CM-H2DCFDA), and 3'-p-(aminophenyl) fluorescein, respectively. Reduced glutathione, total iron levels and photoreceptor cell death were also measured. Two genes related to iron metabolism, transferrin receptor 1 (TfR1) and H ferritin (HFt), were quantified by RT-PCR. The effects of ferrous ion on cell death and hydroxyl radical production were determined by treatment with a ferrous ion chelating agent, 2,2'-bipyridyl. We found that the ferrous ion level decreased with light exposure in the short time frame, whereas it was upregulated during a 6-h light exposure. Total iron, ROS, cell death rate, and expression of TfR and HFt genes were significantly increased in a time-dependent manner in 661 W cells exposed to light. Chelation with 2,2'-bipyridyl reduced the level of hydroxyl radicals and protected against light-induced cell death. These results suggest that light exposure decreases ferrous ion levels and enhances iron uptake in photoreceptor cells. Ferrous ion may be involved in light-induced photoreceptor cell death through production of hydroxyl radicals.
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Affiliation(s)
- Tomoyo Imamura
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Tasuku Hirayama
- Pharmaceutical and Medicinal Chemistry, Department of Organic and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Kazuhiro Tsuruma
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Masamitsu Shimazawa
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Hideko Nagasawa
- Pharmaceutical and Medicinal Chemistry, Department of Organic and Medicinal Chemistry, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan
| | - Hideaki Hara
- Molecular Pharmacology, Department of Biofunctional Evaluation, Gifu Pharmaceutical University, 1-25-4 Daigaku-nishi, Gifu 501-1196, Japan.
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Budinsky RA, Schrenk D, Simon T, Van den Berg M, Reichard JF, Silkworth JB, Aylward LL, Brix A, Gasiewicz T, Kaminski N, Perdew G, Starr TB, Walker NJ, Rowlands JC. Mode of action and dose–response framework analysis for receptor-mediated toxicity: The aryl hydrocarbon receptor as a case study. Crit Rev Toxicol 2013; 44:83-119. [DOI: 10.3109/10408444.2013.835787] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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10
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Yi M. Systems analysis of a mouse xenograft model reveals annexin A1 as a regulator of gene expression in tumor stroma. PLoS One 2012; 7:e43551. [PMID: 23077482 PMCID: PMC3471933 DOI: 10.1371/journal.pone.0043551] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2012] [Accepted: 07/23/2012] [Indexed: 12/26/2022] Open
Abstract
Annexin A1 is a multi functional molecule which is involved in inflammation, innate and adaptive immune systems, tumor progression and metastasis. We have previously showed the impaired tumor growth, metastasis, angiogenesis and wound healing in annexin A1 knockout mice. While tumor is a piece of heterogeneous mass including not only malignant tumor cells but also the stroma, the importance of the tumor stroma for tumor progression and metastasis is becoming increasingly clear. The tumor stroma is comprised by various components including extracellular matrix and non-malignant cells in the tumor, such as endothelial cells, fibroblasts, immune cells, inflammatory cells. Based on our previous finding of pro-angiogenic functions for annexin A1 in vascular endothelial cell sprouting, wound healing, tumor growth and metastasis, and the previously known properties for annexin A1 in immune cells and inflammation, this study hypothesized that annexin A1 is a key functional player in tumor development, linking the various components in tumor stroma by its actions in endothelial cells and immune cells. Using systems analysis programs commercially available, this paper further compared the gene expression between tumors from annexin A1 wild type mice and annexin A1 knockout mice and found a list of genes that significantly changed in the tumor stroma that lacked annexin A1. This revealed annexin A1 to be an effective regulator in tumor stroma and suggested a mechanism that annexin A1 affects tumor development and metastasis through interaction with the various components in the microenvironment surrounding the tumor cells.
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Affiliation(s)
- Ming Yi
- Sidney Kimmel Cancer Center and Proteogenomics Research Institute for Systems Medicine, San Diego, California, USA.
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Tsuchiya T, Wang L, Yafune A, Kimura M, Ohishi T, Suzuki K, Mitsumori K, Shibutani M. Disruptive cell cycle regulation involving epigenetic downregulation of Cdkn2a (p16Ink4a) in early-stage liver tumor-promotion facilitating liver cell regeneration in rats. Toxicology 2012; 299:146-54. [DOI: 10.1016/j.tox.2012.05.018] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2012] [Revised: 05/14/2012] [Accepted: 05/21/2012] [Indexed: 11/29/2022]
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12
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A combined approach identifies three mRNAs that are down-regulated by microRNA-29b and promote invasion ability in the breast cancer cell line MCF-7. J Cancer Res Clin Oncol 2012; 138:2127-36. [PMID: 22864815 DOI: 10.1007/s00432-012-1288-x] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Accepted: 07/02/2012] [Indexed: 10/28/2022]
Abstract
BACKGROUND AND AIMS MicroRNAs (miRNAs) are short noncoding RNAs that regulate gene expression by targeting mRNAs. Our previous study found that miR-29b strongly regulates the migration and invasion of breast cancer cells. Here, we aimed to identify the mRNAs targeted by miR-29b. METHODS We used microarray experiments in conjunction with computational methods to identify the mRNAs that were most susceptible to miR-29b-mediated repression. We further confirmed the activities of three target genes, C1QTNF6, SPARC, and COL4A2, by luciferase reporter analyses and invasion assays. RESULTS We evaluated the impact of miR-29b on global mRNA expression in MCF-7 human breast cancer cells through microarray analysis and further analyzed four genes that were at least twofold down-regulated and predicted as miR-29b targets by at least two of the four widely used miRNA target prediction algorithms. We also analyzed one mRNA that was down-regulated by 1.8-fold but was predicted to have significant interactions with miR-29b in pathway analysis and was predicted as a miR-29b target by all four algorithms. Luciferase reporter and invasion assays revealed that C1QTNF6, SPARC, and COL4A2 were targeted by miR-29b and that the degradation of any one of these mRNAs could promote invasion in MCF-7 cells. CONCLUSIONS C1QTNF6, SPARC, and COL4A2 are targeted by miR-29b, and the down-regulation of these three mRNAs can contribute to the invasion ability of MCF-7 cells.
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Taniai E, Yafune A, Kimura M, Morita R, Nakane F, Suzuki K, Mitsumori K, Shibutani M. Fluctuations in cell proliferation, apoptosis, and cell cycle regulation at the early stage of tumor promotion in rat two-stage carcinogenesis models. J Toxicol Sci 2012. [DOI: 10.2131/jts.37.1113] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
Affiliation(s)
- Eriko Taniai
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University
| | - Atsunori Yafune
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University
| | - Masayuki Kimura
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Reiko Morita
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
- Pathogenetic Veterinary Science, United Graduate School of Veterinary Sciences, Gifu University
| | - Fumiyuki Nakane
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Kazuhiko Suzuki
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Kunitoshi Mitsumori
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
| | - Makoto Shibutani
- Laboratory of Veterinary Pathology, Tokyo University of Agriculture and Technology
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14
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Disruption of Smad-dependent signaling for growth of GST-P-positive lesions from the early stage in a rat two-stage hepatocarcinogenesis model. Toxicol Appl Pharmacol 2010; 246:128-40. [DOI: 10.1016/j.taap.2010.04.016] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2010] [Revised: 03/22/2010] [Accepted: 04/08/2010] [Indexed: 11/30/2022]
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15
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Mizukami S, Ichimura R, Kemmochi S, Wang L, Taniai E, Mitsumori K, Shibutani M. Tumor promotion by copper-overloading and its enhancement by excess iron accumulation involving oxidative stress responses in the early stage of a rat two-stage hepatocarcinogenesis model. Chem Biol Interact 2010; 185:189-201. [DOI: 10.1016/j.cbi.2010.03.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2010] [Revised: 03/07/2010] [Accepted: 03/09/2010] [Indexed: 11/27/2022]
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