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Dai Z, Deng KL, Wang XM, Yang DX, Tang CL, Zhou YP. Bidirectional effects of the tryptophan metabolite indole-3-acetaldehyde on colorectal cancer. World J Gastrointest Oncol 2024; 16:2697-2715. [PMID: 38994159 PMCID: PMC11236226 DOI: 10.4251/wjgo.v16.i6.2697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 02/13/2024] [Accepted: 03/25/2024] [Indexed: 06/14/2024] Open
Abstract
BACKGROUND Colorectal cancer (CRC) has a high incidence and mortality. Recent studies have shown that indole derivatives involved in gut microbiota metabolism can impact the tumorigenesis, progression, and metastasis of CRC. AIM To investigate the effect of indole-3-acetaldehyde (IAAD) on CRC. METHODS The effect of IAAD was evaluated in a syngeneic mouse model of CRC and CRC cell lines (HCT116 and DLD-1). Cell proliferation was assessed by Ki-67 fluorescence staining and cytotoxicity tests. Cell apoptosis was analysed by flow cytometry after staining with Annexin V-fluorescein isothiocyanate and propidium iodide. Invasiveness was investigated using the transwell assay. Western blotting and real-time fluorescence quantitative polymerase chain reaction were performed to evaluate the expression of epithelial-mesenchymal transition related genes and aryl hydrocarbon receptor (AhR) downstream genes. The PharmMapper, SEA, and SWISS databases were used to screen for potential target proteins of IAAD, and the core proteins were identified through the String database. RESULTS IAAD reduced tumorigenesis in a syngeneic mouse model. In CRC cell lines HCT116 and DLD1, IAAD exhibited cytotoxicity starting at 24 h of treatment, while it reduced Ki67 expression in the nucleus. The results of flow cytometry showed that IAAD induced apoptosis in HCT116 cells but had no effect on DLD1 cells, which may be related to the activation of AhR. IAAD can also increase the invasiveness and epithelial-mesenchymal transition of HCT116 and DLD1 cells. At low concentrations (< 12.5 μmol/L), IAAD only exhibited cytotoxic effects without promoting cell invasion. In addition, predictions based on online databases, protein-protein interaction analysis, and molecular docking showed that IAAD can bind to matrix metalloproteinase-9 (MMP9), angiotensin converting enzyme (ACE), poly(ADP-ribose) polymerase-1 (PARP1), matrix metalloproteinase-2 (MMP2), and myeloperoxidase (MPO). CONCLUSION Indole-3-aldehyde can induce cell apoptosis and inhibit cell proliferation to prevent the occurrence of CRC; however, at high concentrations (≥ 25 μmol/L), it can also promote epithelial-mesenchymal transition and invasion in CRC cells. IAAD activates AhR and directly binds MMP9, ACE, PARP1, MMP2, and MPO, which partly reveals why it has a bidirectional effect.
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Affiliation(s)
- Ze Dai
- Department of Gastroenterology, The First Affiliated Hospital of Ningbo University, Ningbo 315020, Zhejiang Province, China
- Health Science Center, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Kai-Li Deng
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Xiao-Mei Wang
- Department of Gastroenterology, The First Affiliated Hospital of Ningbo University, Ningbo 315020, Zhejiang Province, China
- Health Science Center, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Dong-Xue Yang
- Department of Gastroenterology, The First Affiliated Hospital of Ningbo University, Ningbo 315020, Zhejiang Province, China
- Institute of Digestive Disease of Ningbo University, Ningbo University, Ningbo 315020, Zhejiang Province, China
- Ningbo Key Laboratory of Translational Medicine Research on Gastroenterology and Hepatology, Ningbo Key Laboratory, Ningbo 315020, Zhejiang Province, China
| | - Chun-Lan Tang
- Health Science Center, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Yu-Ping Zhou
- Department of Gastroenterology, The First Affiliated Hospital of Ningbo University, Ningbo 315020, Zhejiang Province, China
- Institute of Digestive Disease of Ningbo University, Ningbo University, Ningbo 315020, Zhejiang Province, China
- Ningbo Key Laboratory of Translational Medicine Research on Gastroenterology and Hepatology, Ningbo Key Laboratory, Ningbo 315020, Zhejiang Province, China
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Dai Z, Deng KL, Wang XM, Yang DX, Tang CL, Zhou YP. Bidirectional effects of the tryptophan metabolite indole-3-acetaldehyde on colorectal cancer. World J Gastrointest Oncol 2024; 16:2685-2703. [DOI: 10.4251/wjgo.v16.i6.2685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/17/2023] [Revised: 02/13/2024] [Accepted: 03/25/2024] [Indexed: 06/13/2024] Open
Abstract
BACKGROUND Colorectal cancer (CRC) has a high incidence and mortality. Recent studies have shown that indole derivatives involved in gut microbiota metabolism can impact the tumorigenesis, progression, and metastasis of CRC.
AIM To investigate the effect of indole-3-acetaldehyde (IAAD) on CRC.
METHODS The effect of IAAD was evaluated in a syngeneic mouse model of CRC and CRC cell lines (HCT116 and DLD-1). Cell proliferation was assessed by Ki-67 fluorescence staining and cytotoxicity tests. Cell apoptosis was analysed by flow cytometry after staining with Annexin V-fluorescein isothiocyanate and propidium iodide. Invasiveness was investigated using the transwell assay. Western blotting and real-time fluorescence quantitative polymerase chain reaction were performed to evaluate the expression of epithelial-mesenchymal transition related genes and aryl hydrocarbon receptor (AhR) downstream genes. The PharmMapper, SEA, and SWISS databases were used to screen for potential target proteins of IAAD, and the core proteins were identified through the String database.
RESULTS IAAD reduced tumorigenesis in a syngeneic mouse model. In CRC cell lines HCT116 and DLD1, IAAD exhibited cytotoxicity starting at 24 h of treatment, while it reduced Ki67 expression in the nucleus. The results of flow cytometry showed that IAAD induced apoptosis in HCT116 cells but had no effect on DLD1 cells, which may be related to the activation of AhR. IAAD can also increase the invasiveness and epithelial-mesenchymal transition of HCT116 and DLD1 cells. At low concentrations (< 12.5 μmol/L), IAAD only exhibited cytotoxic effects without promoting cell invasion. In addition, predictions based on online databases, protein-protein interaction analysis, and molecular docking showed that IAAD can bind to matrix metalloproteinase-9 (MMP9), angiotensin converting enzyme (ACE), poly(ADP-ribose) polymerase-1 (PARP1), matrix metalloproteinase-2 (MMP2), and myeloperoxidase (MPO).
CONCLUSION Indole-3-aldehyde can induce cell apoptosis and inhibit cell proliferation to prevent the occurrence of CRC; however, at high concentrations (≥ 25 μmol/L), it can also promote epithelial-mesenchymal transition and invasion in CRC cells. IAAD activates AhR and directly binds MMP9, ACE, PARP1, MMP2, and MPO, which partly reveals why it has a bidirectional effect.
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Affiliation(s)
- Ze Dai
- Department of Gastroenterology, The First Affiliated Hospital of Ningbo University, Ningbo 315020, Zhejiang Province, China
- Health Science Center, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Kai-Li Deng
- School of Traditional Chinese Medicine, Southern Medical University, Guangzhou 510515, Guangdong Province, China
| | - Xiao-Mei Wang
- Department of Gastroenterology, The First Affiliated Hospital of Ningbo University, Ningbo 315020, Zhejiang Province, China
- Health Science Center, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Dong-Xue Yang
- Department of Gastroenterology, The First Affiliated Hospital of Ningbo University, Ningbo 315020, Zhejiang Province, China
- Institute of Digestive Disease of Ningbo University, Ningbo University, Ningbo 315020, Zhejiang Province, China
- Ningbo Key Laboratory of Translational Medicine Research on Gastroenterology and Hepatology, Ningbo Key Laboratory, Ningbo 315020, Zhejiang Province, China
| | - Chun-Lan Tang
- Health Science Center, Ningbo University, Ningbo 315211, Zhejiang Province, China
| | - Yu-Ping Zhou
- Department of Gastroenterology, The First Affiliated Hospital of Ningbo University, Ningbo 315020, Zhejiang Province, China
- Institute of Digestive Disease of Ningbo University, Ningbo University, Ningbo 315020, Zhejiang Province, China
- Ningbo Key Laboratory of Translational Medicine Research on Gastroenterology and Hepatology, Ningbo Key Laboratory, Ningbo 315020, Zhejiang Province, China
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Gao T, Chen Y, Hu M, Cao Y, Du Y. MicroRNA-22-3p in human umbilical cord mesenchymal stem cell-secreted exosomes inhibits granulosa cell apoptosis by targeting KLF6 and ATF4-ATF3-CHOP pathway in POF mice. Apoptosis 2023:10.1007/s10495-023-01833-5. [PMID: 37000316 DOI: 10.1007/s10495-023-01833-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/17/2023] [Indexed: 04/01/2023]
Abstract
BACKGROUND Human umbilical cord mesenchymal stem cells (hUCMSCs)-derived exosomes carrying microRNAs (miRNAs) have promising therapeutic potential in various disorders, including premature ovarian failure (POF). Previous evidence has revealed the low plasma level of miR-22-3p in POF patients. Nevertheless, exosomal miR-22-3p specific functions underlying POF progression are unclarified. METHODS A cisplatin induced POF mouse model and in vitro murine ovarian granulosa cell (mOGC) model were established. Exosomes derived from miR-22-3p-overexpressed hUCMSCs (Exos-miR-22-3p) were isolated. CCK-8 assay and flow cytometry were utilized for measuring mOGC cell viability and apoptosis. RT-qPCR and western blotting were utilized for determining RNA and protein levels. The binding ability between exosomal miR-22-3p and Kruppel-like factor 6 (KLF6) was verified using luciferase reporter assay. Hematoxylin-eosin staining, ELISA, and TUNEL staining were performed for examining the alteration of ovarian function in POF mice. RESULTS Exos-miR-22-3p enhanced mOGC viability and attenuated mOGC apoptosis under cisplatin treatment. miR-22-3p targeted KLF6 in mOGCs. Overexpressing KLF6 reversed the above effects of Exos-miR-22-3p. Exos-miR-22-3p ameliorated cisplatin-triggered ovarian injury in POF mice. Exos-miR-22-3p repressed ATF4-ATF3-CHOP pathway in POF mice and cisplatin-treated mOGCs. CONCLUSION Exosomal miR-22-3p from hUCMSCs alleviates OGC apoptosis and improves ovarian function in POF mouse models by targeting KLF6 and ATF4-ATF3-CHOP pathway.
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Affiliation(s)
- Tian Gao
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
- The First Affiliated Hospital of Chongqing Medical University, No.1, Yuanjiagang Friendship Road, Yuzhong District, Chongqing, China.
| | - Ying Chen
- Reproductive Medicine Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China.
- The First Affiliated Hospital of Chongqing Medical University, No.1, Yuanjiagang Friendship Road, Yuzhong District, Chongqing, China.
| | - Min Hu
- Reproductive Medicine Center, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Yi Cao
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
| | - Ying Du
- Department of Gynecology and Obstetrics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, China
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Amarakoon D, Lee WJ, Tamia G, Lee SH. Indole-3-Carbinol: Occurrence, Health-Beneficial Properties, and Cellular/Molecular Mechanisms. Annu Rev Food Sci Technol 2023; 14:347-366. [PMID: 36972159 DOI: 10.1146/annurev-food-060721-025531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023]
Abstract
Indole-3-carbinol (I3C) is a bioactive phytochemical abundant in cruciferous vegetables. One of its main in vivo metabolites is 3,3'-diindolylmethane (DIM), formed by the condensation of two molecules of I3C. Both I3C and DIM alter multiple signaling pathways and related molecules controlling diverse cellular events, including oxidation, inflammation, proliferation, differentiation, apoptosis, angiogenesis, and immunity. There is a growing body of evidence from both in vitro and in vivo models that these compounds possess strong potential to prevent several forms of chronic disease such as inflammation, obesity, diabetes, cardiovascular disease, cancer, hypertension, neurodegenerative diseases, and osteoporosis. This article reviews current knowledge of the occurrence of I3C in nature and foods, along with the beneficial effects of I3C and DIM concerning prevention and treatment of human chronic diseases, focusing on preclinical studies and their mechanisms of action at cellular and molecular levels.
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Affiliation(s)
- Darshika Amarakoon
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland, USA;
| | - Wu-Joo Lee
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland, USA;
| | - Gillian Tamia
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland, USA;
| | - Seong-Ho Lee
- Department of Nutrition and Food Science, University of Maryland, College Park, Maryland, USA;
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Neill G, Masson GR. A stay of execution: ATF4 regulation and potential outcomes for the integrated stress response. Front Mol Neurosci 2023; 16:1112253. [PMID: 36825279 PMCID: PMC9941348 DOI: 10.3389/fnmol.2023.1112253] [Citation(s) in RCA: 18] [Impact Index Per Article: 18.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 01/19/2023] [Indexed: 02/10/2023] Open
Abstract
ATF4 is a cellular stress induced bZIP transcription factor that is a hallmark effector of the integrated stress response. The integrated stress response is triggered by phosphorylation of the alpha subunit of the eukaryotic initiation factor 2 complex that can be carried out by the cellular stress responsive kinases; GCN2, PERK, PKR, and HRI. eIF2α phosphorylation downregulates mRNA translation initiation en masse, however ATF4 translation is upregulated. The integrated stress response can output two contradicting outcomes in cells; pro-survival or apoptosis. The mechanism for choice between these outcomes is unknown, however combinations of ATF4 heterodimerisation partners and post-translational modifications have been linked to this regulation. This semi-systematic review article covers ATF4 target genes, heterodimerisation partners and post-translational modifications. Together, this review aims to be a useful resource to elucidate the mechanisms controlling the effects of the integrated stress response. Additional putative roles of the ATF4 protein in cell division and synaptic plasticity are outlined.
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Affiliation(s)
- Graham Neill
- Division of Cellular and Systems Medicine, School of Medicine, University of Dundee, Dundee, United Kingdom
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Quercetin Induces Anticancer Activity by Upregulating Pro-NAG-1/GDF15 in Differentiated Thyroid Cancer Cells. Cancers (Basel) 2021; 13:cancers13123022. [PMID: 34208730 PMCID: PMC8233818 DOI: 10.3390/cancers13123022] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 06/12/2021] [Accepted: 06/14/2021] [Indexed: 12/20/2022] Open
Abstract
Simple Summary Thyroid cancer is one of the most common cancers worldwide, and its incidence has increased over the last few decades. It is difficult to diagnose different types of thyroid cancer. Tumor tissues from papillary thyroid cancer patient showed higher expression of mature NAG-1, whereas adjacent normal tissues showed higher expression of pro-NAG-1. Several anti-cancer compounds increased pro-NAG-1 expression in thyroid cancer cell line. Quercetin (3,3’,4’,5,7-pentahydroxyflavone) is a flavonoid that is a major component of various plants, including raspberries, grapes, and onions. Quercetin induced apoptosis by inducing only pro-NAG-1 expression, but not mature NAG-1, mediated by the transcription factor C/EBP. This study indicates that pro-NAG-1 could be used as a useful biomarker for thyroid cancer and also provides a potential therapeutic target for the treatment of thyroid cancer with quercetin. Abstract Although the treatment of thyroid cancer has improved, unnecessary surgeries are performed due to a lack of specific diagnostic and prognostic markers. Therefore, the identification of novel biomarkers should be considered in the diagnosis and treatment of thyroid cancer. In this study, antibody arrays were performed using tumor and adjacent normal tissues of patients with papillary thyroid cancer, and several potential biomarkers were identified. Among the candidate proteins chosen based on the antibody array data, mature NAG-1 exhibited increased expression in tumor tissues compared to adjacent normal tissues. In contrast, pro-NAG-1 expression increased in normal tissues, as assessed by western blot analysis. Furthermore, pro-NAG-1 expression was increased when the thyroid cancer cells were treated with phytochemicals and nonsteroidal anti-inflammatory drugs in a dose-dependent manner. In particular, quercetin highly induced the expression of pro-NAG-1 but not that of mature NAG-1, with enhanced anticancer activity, including apoptosis induction and cell cycle arrest. Examination of the NAG-1 promoter activity showed that p53, C/EBPα, or C/EBPδ played a role in quercetin-induced NAG-1 expression. Overall, our study indicated that NAG-1 may serve as a novel biomarker for thyroid cancer prognosis and may be used as a therapeutic target for thyroid cancers.
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Bao C, He C, Shu B, Meng T, Cai Q, Li B, Wu G, Wu B, Li H. Aerobic exercise training decreases cognitive impairment caused by demyelination by regulating ROCK signaling pathway in aging mice. Brain Res Bull 2021; 168:52-62. [PMID: 33358939 DOI: 10.1016/j.brainresbull.2020.12.010] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2020] [Revised: 12/15/2020] [Accepted: 12/16/2020] [Indexed: 02/08/2023]
Abstract
Recent studies have discovered a strong link between physical exercise and the prevention of neuro-degenerative symptoms, especially in elderly subjects, nonetheless, the exact underlying mechanism remains unclear. In this study, we hypothesized that aerobic exercise training may have a protective effect on myelin sheath in aged mice by regulating the ROCK signal pathway, which is considered as a crucial mechanism for decreasing apoptosis and promoting regeneration. Briefly, C57/BL aged mice underwent an exercise training (5 days/week, lasting 6 weeks). Memory and cognitive impairment were examined using Novel object recognition (NOR) test and Morris water maze test (MWM). Demyelination was explored using Luxol fast blue staining and transmission electron microscopy in the corpus callosum (CC), and the expression of ROCK and apoptotic protein were analyzed via western blot. We demonstrated the impairment of memory and cognitive and the decrease of myelin sheath thickness in aged mice. In addition, severe demyelination was observed in aged mice, accompanied with increased expression of RhoA, ROCK, ATF3, and Caspase 3, and reduced expression of MBP, Olig2, and NG2. Aerobic exercise training improved behavioral functions, increased the expression of MBP and myelin sheath thickness, reduced apoptosis and promoted myelination. To sum up, our data indicate that aerobic exercise training protects demyelination from aging-related white matter injury, which is associated with the up-regulation of ROCK signal pathway.
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Affiliation(s)
- Chuncha Bao
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China; Key Laboratory of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Chengqi He
- Department of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China; Key Laboratory of Rehabilitation Medicine, West China Hospital, Sichuan University, Chengdu, China
| | - Bin Shu
- Department of Rehabilitation Medicine, University - Town Hospital, Chongqing Medical University, Chongqing, 401331, China
| | - Tao Meng
- Department of Military Joint and Force Management, Army Training Base for Health Care, Army Medical University, Chongqing, 400038, China
| | - Qiyan Cai
- Department of Histology and Embryology, Army Medical University, Chongqing, 400038, China
| | - Baichuan Li
- Experimental Center of Basic Medicine, College of Basic Medical Science, Third Military Medical University, Chongqing, 400038, China
| | - Guangyan Wu
- Experimental Center of Basic Medicine, College of Basic Medical Science, Third Military Medical University, Chongqing, 400038, China
| | - Bin Wu
- Experimental Center of Basic Medicine, College of Basic Medical Science, Third Military Medical University, Chongqing, 400038, China
| | - Hongli Li
- Experimental Center of Basic Medicine, College of Basic Medical Science, Third Military Medical University, Chongqing, 400038, China.
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Anticancer Activity of a Novel High Phenolic Sorghum Bran in Human Colon Cancer Cells. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2020; 2020:2890536. [PMID: 33082907 PMCID: PMC7556115 DOI: 10.1155/2020/2890536] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 07/23/2020] [Accepted: 09/10/2020] [Indexed: 01/05/2023]
Abstract
Human colon cancer is the third leading cause of mortality in the United States and worldwide. Chemoprevention using diet is widely accepted as a promising approach for cancer management. Numerous population studies indicate a negative correlation between the incidence of colon cancer and consumption of whole grains with a high content of bioactive phenolic compounds. In the current study, we evaluated the anticancer properties of a high phenolic sorghum bran extract prepared using 70% ethanol with 5% citric acid solvent at room temperature. A significant dose-dependent suppression of cell proliferation was observed in human colon cancer cells treated with the high phenolic sorghum bran extract. Apoptosis and S phase growth arrest were induced, while cell migration and invasion were inhibited by this treatment; these effects were accompanied by altered expression of apoptosis, cell cycle, and metastasis-regulating genes. We also found that the high phenolic sorghum bran extract stimulated DNA damage in association with induction of extracellular signal-regulated kinase (ERK) and c-Jun-NH2-terminal kinase (JNK) and subsequent expression of activating transcription factor 3 (ATF3). The present study expands our understanding of the potential use of high phenolic sorghum bran to prevent human colon cancer.
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Kim JY, Le TAN, Lee SY, Song DG, Hong SC, Cha KH, Lee JW, Pan CH, Kang K. 3,3'-Diindolylmethane Improves Intestinal Permeability Dysfunction in Cultured Human Intestinal Cells and the Model Animal Caenorhabditis elegans. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:9277-9285. [PMID: 31353906 DOI: 10.1021/acs.jafc.9b03039] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
3,3'-Diindolylmethane (DIM), a digestive metabolite originating from cruciferous vegetables, has dietary potential for the treatment of various human intestinal diseases. Although intestinal permeability dysfunction is closely related to the initiation and progression of human intestinal inflammatory diseases (IBDs), the effect of DIM on intestinal permeability is unclear. We evaluated the effect of DIM on the intestinal permeability of human intestinal cell monolayers and the animal model Caenorhabditis elegans, which were treated with IL-1β and Pseudomonas aeruginosa, respectively, to mimic IBD conditions. DIM substantially restored the intestinal permeability of differentiated Caco-2 cells by enhancing the expression of tight junction proteins (including occludin and ZO-1). Compared to the IL-1β single treatment (551.0 ± 49.0 Ω·cm2), DIM (10 μM) significantly increased the transepithelial electrical resistance (TEER) of Caco-2 cell monolayers (919.0 ± 66.4 Ω·cm2, p < 0.001). DIM also ameliorated the impaired intestinal permeability and extended the lifespan of C. elegans fed P. aeruginosa. The mean lifespan of DIM-treated worms (10.8 ± 1.3 days) was higher than that of control-treated worms (9.7 ± 1.1 days, p < 0.01). Thus, DIM is a potential nutraceutical candidate for the treatment of leaky gut syndrome by improving intestinal permeability.
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Affiliation(s)
- Joo Yeon Kim
- Natural Product Informatics Research Center , Korea Institute of Science and Technology , Gangneung , Gangwon-do 25451 , Republic of Korea
| | - Tram Anh Ngoc Le
- Natural Product Informatics Research Center , Korea Institute of Science and Technology , Gangneung , Gangwon-do 25451 , Republic of Korea
| | - So Young Lee
- Natural Product Informatics Research Center , Korea Institute of Science and Technology , Gangneung , Gangwon-do 25451 , Republic of Korea
| | - Dae-Geun Song
- Natural Product Informatics Research Center , Korea Institute of Science and Technology , Gangneung , Gangwon-do 25451 , Republic of Korea
| | - Sung-Chul Hong
- Natural Product Informatics Research Center , Korea Institute of Science and Technology , Gangneung , Gangwon-do 25451 , Republic of Korea
| | - Kwang Hyun Cha
- Natural Product Informatics Research Center , Korea Institute of Science and Technology , Gangneung , Gangwon-do 25451 , Republic of Korea
| | - Jae Wook Lee
- Natural Products Research Center , Korea Institute of Science and Technology , Gangneung , Gangwon-do 25451 , Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School , Korea University of Science and Technology (UST) , Seoul 02792 , Republic of Korea
| | - Cheol-Ho Pan
- Natural Product Informatics Research Center , Korea Institute of Science and Technology , Gangneung , Gangwon-do 25451 , Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School , Korea University of Science and Technology (UST) , Seoul 02792 , Republic of Korea
| | - Kyungsu Kang
- Natural Product Informatics Research Center , Korea Institute of Science and Technology , Gangneung , Gangwon-do 25451 , Republic of Korea
- Division of Bio-Medical Science & Technology, KIST School , Korea University of Science and Technology (UST) , Seoul 02792 , Republic of Korea
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Karimabad MN, Mahmoodi M, Jafarzadeh A, Darekordi A, Hajizadeh MR, Hassanshahi G. Molecular Targets, Anti-cancer Properties and Potency of Synthetic Indole-3-carbinol Derivatives. Mini Rev Med Chem 2019; 19:540-554. [DOI: 10.2174/1389557518666181116120145] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 04/25/2017] [Accepted: 04/26/2017] [Indexed: 12/14/2022]
Abstract
The indole-3-carbinol (I3C) displays anti-cancer/proliferative activities against human cancer cells. Cellular proliferation is an event associated with the progress and its continuation. This manifest is described by variation in expression and/or functions of genes that are related with cell cycle relevant proteins. The constitutive activation of several signal transduction pathways stimulates cells proliferation as well. The immediate stages in cancer development are accompanied by a fibrogenic response and the progression of the hypoxic environment is in favor of survival and proliferatory functions of cancer stem cells. A main part for prevention of in cancer cells death may manifest through altering cell metabolism. Cellular proliferation and metastasis are reported to be supported with increased generation of responsible hormones (in hormone dependent malignancies), and further promotion the angiogenesis, with epithelial to mesenchymal transition. This may be facilitated by progression of autophagy phenomenon, as well as via taking cues from neighboring stromal cells. Several signaling pathways in association with various factors specific for cellular viability, including hypoxia inducible factor 1, NF-κB, insulin-like growth factor 1 (IGF-1) receptor, Human foreskin fibroblasts (HFF-1), phosphoinositide 3 kinase/Akt, Wnt, cell cycle related protein, with androgen and estrogen receptor signaling are reported to be inhibited by I3C. These evidences, in association with bioinformatics data represent very important information for describing signaling pathways in parallel with molecular targets that may serve as markers for early diagnosis and/or critical targets for designing and development of novel therapeutic regimes alone or combined with drugs, to prevent tumor formation and further progression. In particular, I3C and DIM have been extensively investigated for their importance against numbers human cancers both in vitro and in vivo. We aimed the present manuscript, current study, to review anticancer properties and the miscellaneous mechanisms underlying the antitumorigenicity in an in-depth study for broadening the I3C treating marvel.
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Affiliation(s)
- Mojgan Noroozi Karimabad
- Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Mehdi Mahmoodi
- Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Abdolah Jafarzadeh
- Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Ali Darekordi
- Department of Chemistry, Faculty of Science, Vali-e-Asr University of Rafsanjan, Rafsanjan, Iran
| | - Mohamad Reza Hajizadeh
- Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
| | - Gholamhossein Hassanshahi
- Molecular Medicine Research Center, Research Institute of Basic Medical Sciences, Rafsanjan University of Medical Sciences, Rafsanjan, Iran
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Inoue M, Uchida Y, Edagawa M, Hirata M, Mitamura J, Miyamoto D, Taketani K, Sekine S, Kawauchi J, Kitajima S. The stress response gene ATF3 is a direct target of the Wnt/β-catenin pathway and inhibits the invasion and migration of HCT116 human colorectal cancer cells. PLoS One 2018; 13:e0194160. [PMID: 29966001 PMCID: PMC6028230 DOI: 10.1371/journal.pone.0194160] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2017] [Accepted: 02/26/2018] [Indexed: 12/12/2022] Open
Abstract
Aberrant Wnt/β-catenin signaling is implicated in tumorigenesis and the progression of human colorectal cancers, and mutations in the components of the Wnt/β-catenin signaling pathway are observed in the majority of patients. Therefore, extensive studies on the Wnt signaling pathway and its target genes are crucial to understand the molecular events of tumorigenesis and develop an efficacious therapy. In this study, we showed that the stress response gene ATF3 is transcriptionally activated by the binding of β-catenin and TCF4 to the redundant TCF4 site at the proximal promoter region of the ATF3 gene, indicating that ATF3 is a direct target of the Wnt/β-catenin pathway. The loss of function or overexpression studies showed that ATF3 inhibited the migration or invasion of HCT116 cells. The expression of some MMP and TIMP genes and the ratio of MMP2/9 to TIMP3/4 mRNAs was differentially regulated by ATF3. Therefore, though ATF3 is activated downstream of the Wnt/β-catenin pathway, it acts as a negative regulator of the migration and invasion of HCT116 human colon cancer cells exhibiting aberrant Wnt/β-catenin activity. ATF3 is a candidate biomarker and target for human colorectal cancer treatment and prevention.
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Affiliation(s)
- Makoto Inoue
- Department of Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Yohei Uchida
- Department of Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Makoto Edagawa
- Department of Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Surgery and Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Manabu Hirata
- Department of Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Jun Mitamura
- Department of Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Daiki Miyamoto
- Department of Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Kenji Taketani
- Department of Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
- Department of Surgery and Sciences, Graduate School of Medical Sciences, Kyushu University, Fukuoka, Japan
| | - Shigeki Sekine
- Pathology Division, National Cancer Center Research Institute, Tokyo, Japan
| | - Junya Kawauchi
- Department of Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shigetaka Kitajima
- Department of Biochemical Genetics, Medical Research Institute, Tokyo Medical and Dental University, Tokyo, Japan
- * E-mail:
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12
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Fan Q, Liu B. Identification of the anticancer effects of a novel proteasome inhibitor, ixazomib, on colorectal cancer using a combined method of microarray and bioinformatics analysis. Onco Targets Ther 2017; 10:3591-3606. [PMID: 28790851 PMCID: PMC5530849 DOI: 10.2147/ott.s139686] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Purpose The study aimed to explore the anticancer effects of a novel proteasome inhibitor, ixazomib, on colorectal cancer (CRC) using a combined method of microarray and bioinformatics analysis. Materials and methods Cell proliferation was tested by Cell Counting Kit-8 (CCK-8) assay for SW620 cells treated with different concentrations of ixazomib and different treatment times. The microarray analysis was conducted for six samples, including three samples of SW620 cells untreated with ixazomib and three samples of SW620 cells treated with ixazomib. The differentially expressed genes (DEGs) between untreated and treated samples were identified by the Linear Models for Microarray data (LIMMA) package in R language. The Gene Ontology (GO) functional and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analysis were performed for the DEGs using the Database for Annotation, Visualization and Integrated Discovery (DAVID) and KEGG Orthology-Based Annotation System (KOBAS) online tool. The protein–protein interaction (PPI) network was constructed using the Search Tool for the Retrieval of Interacting Genes/Proteins (STRING) database, and module analysis was performed for the PPI network. Results Ixazomib could inhibit the proliferation of SW620 cells in a dose-dependent and time-dependent manner. A total of 743 DEGs, including 203 upregulated DEGs such as HSPA6 and 540 downregulated DEGs such as APCDD1, were identified. Eighty-three GO terms were enriched for DEGs, which were mainly related to protein folding, apoptotic process, transcription factor activity, and proteasome. Thirty-seven KEGG pathways were perturbed, including pathway of apoptosis and cell cycle. Forty-six hub genes, such as TP53, JUN, and ITGA2, were screened out, and three modules with important functions were mined from the PPI network. Conclusion The novel proteasome inhibitor ixazomib significantly inhibited the proliferation of human CRC SW620 cells. It exerted anticancer effects through targeting the expression of DEGs, such as HSPA6, APCDD1, TP53, and JUN, and affecting the signaling pathways including apoptosis and cell cycle pathway, which demonstrated the promising potential of ixazomib for CRC therapy.
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Affiliation(s)
- Qiaowei Fan
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
| | - Bingrong Liu
- Department of Gastroenterology and Hepatology, The Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang, People's Republic of China
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13
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Zhang X, Sukamporn P, Zhang S, Min KW, Baek SJ. 3,3'-diindolylmethane downregulates cyclin D1 through triggering endoplasmic reticulum stress in colorectal cancer cells. Oncol Rep 2017; 38:569-574. [PMID: 28586058 DOI: 10.3892/or.2017.5693] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Accepted: 05/17/2017] [Indexed: 11/05/2022] Open
Abstract
As a major in vivo condensation product of indole-3-carbinol, which is mostly present in cruciferous vegetables, 3,3'-diindolylmethane (DIM) has been previously reported with anti-proliferative action in different types of cancer by our group and others. To further elucidate these underlying mechanisms, we examined the effect of DIM on cyclin D1, which was aberrantly overexpressed in various cancer cells and tumors. Herein, we found that DIM downregulated cyclin D1 expression in colorectal cancer cells (CRC), which was independent of PPARγ expression and protease activity. Furthermore, DIM did not affect cyclin D1 mRNA expression, suggesting DIM modulated cyclin D1 expression at the translational level. Subsequently, blocking eIF2α phosphorylation resulted from endoplasmic reticulum (ER) stress restored cyclin D1 in the presence of DIM. Thus, the present study demonstrates that DIM downregulates cyclin D1 through triggering ER stress in human colorectal cancer cells.
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Affiliation(s)
- Xiaobo Zhang
- Department of Basic Medical Science, School of Basic Medicine and Clinical Pharmacy, China Pharmaceutical University, Nanjing, Jiangsu 210009, P.R. China
| | - Pakin Sukamporn
- Department of Pharmacy, Faculty of Pharmacy, Mahidol University, Bangkok 10400, Thailand
| | - Shiqiang Zhang
- Oncology Department, Shanghai TCM-Integrated Hospital, Shanghai 200082, P.R. China
| | - Kyung-Won Min
- Department of Biochemistry and Molecular Biology, Medical University of South Carolina, Charleston, SC 29425, USA
| | - Seung Joon Baek
- Laboratory of Signal Transduction, College of Veterinary Medicine and Research Institute for Veterinary Science, Seoul National University, Seoul 08826, Republic of Korea
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Song HM, Park GH, Koo JS, Jeong HJ, Jeong JB. Vitex rotundifolia Fruit Extract Induces Apoptosis Through the Downregulation of ATF3-Mediated Bcl-2 Expression in Human Colorectal Cancer Cells. THE AMERICAN JOURNAL OF CHINESE MEDICINE 2017; 45:901-915. [DOI: 10.1142/s0192415x17500483] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Fruit from Vitex rotundifolia L. (VF) has been reported to initiate apoptosis in human colorectal cancer cells through the accumulation of reactive oxygen species. Since various regulatory factors are involved in the apoptotic pathway, further study of the potential mechanisms of VF associated with the induction of apoptosis may be important despite the fact that the molecular target of VF for apoptosis has already been elucidated. In this study, we showed a new potential mechanism for the relationship between VF-mediated ATF3 expression and apoptosis to better understand the apoptotic mechanism of VF in human colorectal cancer cells. VF reduced the cell viability and induced apoptosis in human colorectal cancer cells. VF treatment increased both the protein and mRNA level of ATF3 and upregulated ATF3 promoter activity. The cis-element responsible for ATF3 transcriptional activation by VF was CREB which is located between [Formula: see text]147 to [Formula: see text]85 of ATF3 promoter. Inhibitions of ERK1/2, p38, JNK and GSK3[Formula: see text] blocked VF-mediated ATF3 expression. ATF3 knockdown by ATF3 siRNA attenuated the cleavage of PARP by VF, while ATF3 overexpression increased VF-mediated cleaved PARP. ATF3 knockdown also attenuated VF-mediated cell viability and cell death. In addition, VF downregulated Bcl-2 expression at both protein and mRNA level. ATF3 knockdown by ATF3 siRNA blocked VF-mediated downregulation of Bcl-2. In conclusion, VF may activate ATF3 expression through transcriptional regulation and subsequently suppress Bcl-2 expression as an anti-apoptotic protein, which may result in the induction of apoptosis in human colorectal cancer cells.
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Affiliation(s)
- Hun Min Song
- Department of Medicinal Plant Resources, Andong National University, Andong 36729, Republic of Korea
| | - Gwang Hun Park
- Department of Medicinal Plant Resources, Andong National University, Andong 36729, Republic of Korea
- Forest Medicinal Resources Research Center, National Institute of Forest Science, Yeongju 36040, Republic of Korea
| | - Jin Suk Koo
- Department of Medicinal Plant Resources, Andong National University, Andong 36729, Republic of Korea
- Insititute of Agricultural Science and Technology, Andong National University, Andong 36729, Republic of Korea
| | - Hyung Jin Jeong
- Department of Medicinal Plant Resources, Andong National University, Andong 36729, Republic of Korea
- Insititute of Agricultural Science and Technology, Andong National University, Andong 36729, Republic of Korea
| | - Jin Boo Jeong
- Department of Medicinal Plant Resources, Andong National University, Andong 36729, Republic of Korea
- Insititute of Agricultural Science and Technology, Andong National University, Andong 36729, Republic of Korea
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Lee J, Yue Y, Park Y, Lee SH. 3,3'-Diindolylmethane Suppresses Adipogenesis Using AMPKα-Dependent Mechanism in 3T3-L1 Adipocytes and Caenorhabditis elegans. J Med Food 2017; 20:646-652. [PMID: 28459610 DOI: 10.1089/jmf.2016.0165] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
3,3'-diindolylmethane is a major in vivo metabolite of indole-3-carbinol, a bioactive compound found in cruciferous vegetables. Although 3,3'-diindolylmethane has been implicated to possess antitumorigenic and anti-inflammatory properties, the effect of 3,3'-diindolylmethane on adipogenesis has not been explored previously. Thus, the present study was conducted to determine if 3,3'-diindolylmethane affects adipogenesis using 3T3-L1 adipocytes and Caenorhabditis elegans. Treatment of 3,3'-diindolylmethane significantly reduced fat accumulation without affecting viability in 3T3-L1 adipocytes. 3,3'-diindolylmethane suppressed expression of peroxisome proliferator-activated receptor γ (PPARγ), CCAAT-enhancer-binding protein α (C/EBPα), fatty acid binding protein 4 (FABP4), and perilipin. In addition, 3,3'-diindolylmethane activated AMP-activated protein kinase α (AMPKα), which subsequently inactivated acetyl CoA carboxylase (ACC), resulting in reduced fat accumulation. These observations were further confirmed in C. elegans as treatment with 3,3'-diindolylmethane significantly reduced body fat accumulation, which was partly associated with aak-1, but not aak-2, orthologs of AMPKα catalytic subunits α1 and α2, respectively. The current results demonstrate that 3,3'-diindolylmethane, a biologically active metabolite of indole-3-carbinol, may prevent adipogenesis through the AMPKα-dependent pathway.
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Affiliation(s)
- Jihye Lee
- 1 Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland , College Park, Maryland, USA
| | - Yiren Yue
- 2 Department of Food Science, University of Massachusetts , Amherst, Massachusetts, USA
| | - Yeonhwa Park
- 2 Department of Food Science, University of Massachusetts , Amherst, Massachusetts, USA
| | - Seong-Ho Lee
- 1 Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland , College Park, Maryland, USA
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Kim KJ, Chei S, Choi SY, Lee OH, Lee BY. Pterostilbene activates the GRP78–elF2α–ATF3 cascade of ER stress and subsequently induces apoptosis in human colon cancer cells. J Funct Foods 2016. [DOI: 10.1016/j.jff.2016.08.027] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023] Open
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Hu YL, Yin Y, Liu HY, Feng YY, Bian ZH, Zhou LY, Zhang JW, Fei BJ, Wang YG, Huang ZH. Glucose deprivation induces chemoresistance in colorectal cancer cells by increasing ATF4 expression. World J Gastroenterol 2016; 22:6235-6245. [PMID: 27468213 PMCID: PMC4945982 DOI: 10.3748/wjg.v22.i27.6235] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 05/25/2016] [Accepted: 06/15/2016] [Indexed: 02/06/2023] Open
Abstract
AIM: To investigate the role of activating transcription factor 4 (ATF4) in glucose deprivation (GD) induced colorectal cancer (CRC) drug resistance and the mechanism involved.
METHODS: Chemosensitivity and apoptosis were measured under the GD condition. Inhibition of ATF4 using short hairpin RNA in CRC cells under the GD condition and in ATF4-overexpressing CRC cells was performed to identify the role of ATF4 in the GD induced chemoresistance. Quantitative real-time RT-PCR and Western blot were used to detect the mRNA and protein expression of drug resistance gene 1 (MDR1), respectively.
RESULTS: GD protected CRC cells from drug-induced apoptosis (oxaliplatin and 5-fluorouracil) and induced the expression of ATF4, a key gene of the unfolded protein response. Depletion of ATF4 in CRC cells under the GD condition can induce apoptosis and drug re-sensitization. Similarly, inhibition of ATF4 in the ATF4-overexpressing CRC cells reintroduced therapeutic sensitivity and apoptosis. In addition, increased MDR1 expression was observed in GD-treated CRC cells.
CONCLUSION: These data indicate that GD promotes chemoresistance in CRC cells through up-regulating ATF4 expression.
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Eo HJ, Kwon TH, Park GH, Song HM, Lee SJ, Park NH, Jeong JB. In Vitro Anticancer Activity of Phlorofucofuroeckol A via Upregulation of Activating Transcription Factor 3 against Human Colorectal Cancer Cells. Mar Drugs 2016; 14:md14040069. [PMID: 27043582 PMCID: PMC4849073 DOI: 10.3390/md14040069] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2016] [Revised: 03/18/2016] [Accepted: 03/24/2016] [Indexed: 01/08/2023] Open
Abstract
Phlorofucofuroeckol A (PFF-A), one of the phlorotannins found in brown algae, has been reported to exert anti-cancer property. However, the molecular mechanism for the anti-cancer effect of PFF-A has not been known. Activating transcription factor 3 (ATF3) has been reported to be associated with apoptosis in colorectal cancer. The present study was performed to investigate the molecular mechanism by which PFF-A stimulates ATF3 expression and apoptosis in human colorectal cancer cells. PFF-A decreased cell viability through apoptosis of human colorectal cancer cells. PFF-A increased ATF3 expression through regulating transcriptional activity. The responsible cis-element for ATF3 transcriptional activation by PFF-A was cAMP response element binding protein (CREB), located between positions −147 and −85 of the ATF3 promoter. Inhibition of p38, c-Jun N-terminal kinases (JNK), glycogen synthase kinase (GSK) 3β, and IκB kinase (IKK)-α blocked PFF-A-mediated ATF3 expression. ATF3 knockdown by ATF3 siRNA attenuated the cleavage of poly (ADP-ribose) polymerase (PARP) by PFF-A, while ATF3 overexpression increased PFF-A-mediated cleaved PARP. These results suggest that PFF-A may exert anti-cancer property through inducing apoptosis via the ATF3-mediated pathway in human colorectal cancer cells.
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Affiliation(s)
- Hyun Ji Eo
- Department of Bioresource Sciences, Andong National University, Andong 36729, Korea.
| | - Tae-Hyung Kwon
- Chuncheon Bioindustry Foundation, Chuncheon 24234, Korea.
| | - Gwang Hun Park
- Department of Bioresource Sciences, Andong National University, Andong 36729, Korea.
| | - Hun Min Song
- Department of Bioresource Sciences, Andong National University, Andong 36729, Korea.
| | - Su-Jin Lee
- Department of Herbal Medicine Resource, Kangwon National University, Dogye 25949, Korea.
| | - Nyun-Ho Park
- Gyeongbuk Institute for Marine Bioindustry, Uljin 36315, Korea.
| | - Jin Boo Jeong
- Department of Bioresource Sciences, Andong National University, Andong 36729, Korea.
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Song HM, Park GH, Eo HJ, Jeong JB. Naringenin-Mediated ATF3 Expression Contributes to Apoptosis in Human Colon Cancer. Biomol Ther (Seoul) 2016; 24:140-6. [PMID: 26797111 PMCID: PMC4774494 DOI: 10.4062/biomolther.2015.109] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2015] [Revised: 10/05/2015] [Accepted: 10/26/2015] [Indexed: 12/19/2022] Open
Abstract
Naringenin (NAR) as one of the flavonoidsobserved in grapefruit has been reported to exhibit an anti-cancer activity. Activating transcription factor 3 (ATF3) is associated with apoptosis in human colon cancer cells. This study was performed to investigate the molecular mechanism by which NAR stimulates ATF3 expression and apoptosis in human colon cancer cells. NAR reduced the cell viability and induced an apoptosis in human colon cancer cells. ATF3 overexpression increased NAR-mediated cleaved PARP, while ATF3 knockdown attenuated the cleavage of PARP by NAR. NAR increased ATF3 expression in both protein and mRNA level, and increased the luciferase activity of ATF3 promoter in a dose-dependent manner. The responsible region for ATF3 transcriptional activation by NAR is located between -317 and -148 of ATF3 promoter. p38 inhibition blocked NAR-mediated ATF3 expression, its promoter activation and apoptosis. The results suggest that NAR induces apoptosis through p38-dependent ATF3 activation in human colon cancer cells.
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Affiliation(s)
- Hun Min Song
- Department of Bioresource Sciences, Andong National University, Andong 760749, Republic of Korea
| | - Gwang Hun Park
- Department of Bioresource Sciences, Andong National University, Andong 760749, Republic of Korea
| | - Hyun Ji Eo
- Department of Bioresource Sciences, Andong National University, Andong 760749, Republic of Korea
| | - Jin Boo Jeong
- Department of Bioresource Sciences, Andong National University, Andong 760749, Republic of Korea
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TCF4 Is a Molecular Target of Resveratrol in the Prevention of Colorectal Cancer. Int J Mol Sci 2015; 16:10411-25. [PMID: 25961950 PMCID: PMC4463653 DOI: 10.3390/ijms160510411] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 04/30/2015] [Accepted: 05/04/2015] [Indexed: 12/22/2022] Open
Abstract
The Wnt/β-catenin pathway plays an essential role in the tumorigenesis of colorectal cancer. T-cell factor-4 (TCF4) is a member of the TCF/LEF (lymphoid enhancer factor) family of transcription factors, and dysregulation of β-catenin is decisive for the initiation and progression of colorectal cancer. However, the role of TCF4 in the transcriptional regulation of its target gene remained poorly understood. Resveratrol is a dietary phytoalexin and present in many plants, including grape skin, nuts and fruits. Although resveratrol has been widely implicated in anti-tumorigenic and pro-apoptotic properties in several cancer models, the underlying cellular mechanisms are only partially understood. The current study was performed to elucidate the molecular mechanism of the anti-cancer activity of resveratrol in human colorectal cancer cells. The treatment of resveratrol and other phytochemicals decreased the expression of TCF4. Resveratrol decreases cellular accumulation of exogenously-introduced TCF4 protein, but did not change the TCF4 transcription. The inhibition of proteasomal degradation using MG132 (carbobenzoxy-Leu-Leu-leucinal) and lactacystin ameliorates resveratrol-stimulated down-regulation of TCF4. The half-life of TCF4 was decreased in the cells exposed to resveratrol. Resveratrol increased phosphorylation of TCF4 at serine/threonine residues through ERK (extracellular signal-regulated kinases) and p38-dependent pathways. The TCF4 knockdown decreased TCF/β-catenin-mediated transcriptional activity and sensitized resveratrol-induced apoptosis. The current study provides a new mechanistic link between resveratrol and TCF4 down-regulation and significant benefits for further preclinical and clinical practice.
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Pu H, Wang X, Su L, Ma C, Zhang Y, Zhang L, Chen X, Li X, Wang H, Liu X, Zhang J. Heroin activates ATF3 and CytC via c-Jun N-terminal kinase pathways to mediate neuronal apoptosis. Med Sci Monit Basic Res 2015; 21:53-62. [PMID: 25848832 PMCID: PMC4400970 DOI: 10.12659/msmbr.893827] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Background Drug abuse and addiction has become a major public health problem that impacts all societies. The use of heroin may cause spongiform leukoencephalopathy (SLE). Material/Methods Cerebellar granule cells were derived from 7-day-old Sprague-Dawley rat pups. Neurons were dissociated from freshly dissected cerebella by mechanical disruption in the presence of 0.125% trypsin and DNaseI and then seeded at a density of 4×106 cells/ml in Dulbecco’s modified Eagle’s medium/nutrient mixture F-12 ham’s containing 10% fetal bovine serum and Arc-C(sigma) at concentrations to inhibit glial cell growth inoculated into 6-well plates and a small dish. Results We found that heroin induces the apoptosis of primary cultured cerebellar granule cells (CGCS) and that the c-Jun N-terminal kinase (JNK) pathway was activated under heroin treatment and stimulated obvious increases in the levels of C-jun, Cytc, and ATF3mRNA. CYTC and ATF3 were identified as candidate targets of the JNK/c-Jun pathway in this process because the specificity inhibitors SP600125 of JNK/C-jun pathways reduced the levels of C-jun, Cytc, and ATF3mRNA. The results suggested that SP600125 of JNK/C-jun can inhibit heroin-induced apoptosis of neurons. Conclusions The present study analyzes our understanding of the critical role of the JNK pathway in the process of neuronal apoptosis induced by heroin, and suggests a new and effective strategy to treat SLE.
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Affiliation(s)
- Hongwei Pu
- Department of Science and Research Education Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Sinciang, China (mainland)
| | - Xuemei Wang
- Xinjiang Key Laboratory of Medical Animal Model Research, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Sinciang, China (mainland)
| | - Liping Su
- College of Basic Medicine, Xinjiang Medical University, Urumqi, Sinciang, China (mainland)
| | - Chuang Ma
- Department of Micro-Reconstructive Surgery of Orthopedics Center, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Sinciang, China (mainland)
| | - Yan Zhang
- College of International Education, Xinjiang Medical University, Urumqi, Sinciang, China (mainland)
| | - Liping Zhang
- College of Basic Medicine, Xinjiang Medical University, Urumqi, Sinciang, China (mainland)
| | - Xiao Chen
- College of Basic Medicine, Xinjiang Medical University, Urumqi, Sinciang, China (mainland)
| | - Xiujuan Li
- Xinjiang Key Laboratory of Medical Animal Model Research, First Affiliated Hospital of Xinjiang Medical University, Urumqi, Sinciang, China (mainland)
| | - Hua Wang
- College of Basic Medicine, Xinjiang Medical University, Urumqi, Sinciang, China (mainland)
| | - Xiaoshan Liu
- Department of Forensic Science, Zhongshan School of Medicine, Sun Yat-Sen University, Guangzhou, Guangdong, China (mainland)
| | - Jianlong Zhang
- College of Basic Medicine, Xinjiang Medical University, Urumqi, Sinciang, China (mainland)
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Ye Y, Miao S, Wang Y, Zhou J, Lu R. 3,3'-diindolylmethane potentiates tumor necrosis factor-related apoptosis-inducing ligand-induced apoptosis of gastric cancer cells. Oncol Lett 2015; 9:2393-2397. [PMID: 26137077 DOI: 10.3892/ol.2015.3008] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Accepted: 02/10/2015] [Indexed: 12/12/2022] Open
Abstract
Tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) specifically kills cancer cells without destroying the majority of healthy cells. However, numerous types of cancer cell, including gastric cancer cells, tend to be resistant to TRAIL. The bioactive product 3,3'-diindolylmethane (DIM), which is derived from cruciferous vegetables, is also currently recognized as a candidate anticancer agent. In the present study, a Cell Counting Kit 8 cell growth assay and an Annexin V-fluorescein isothiocyanate apoptosis assay were performed to investigate the potentiating effect of DIM on TRAIL-induced apoptosis in gastric cancer cells, and the possible mechanisms of this potentiation. The results obtained demonstrated that, compared with TRAIL or DIM treatment alone, co-treatment with TRAIL (25 or 50 ng/ml) and DIM (10 µmol/l) induced cytotoxic and apoptotic effects in BGC-823 and SGC-7901 gastric cancer cells. Furthermore, western blot analysis revealed that the protein expression levels of death receptor 5 (DR5), CCAAT/enhancer binding protein homologous protein (CHOP) and glucose-regulated protein 78 (GRP78) were upregulated in the co-treated gastric cancer cells. To the best of our knowledge, the present study is the first to provide evidence that DIM sensitizes TRAIL-induced inhibition of proliferation and apoptosis in gastric cancer cells, accompanied by the upregulated expression of DR5, CHOP and GRP78 proteins, which may be involved in endoplasmic reticulum stress mechanisms.
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Affiliation(s)
- Yang Ye
- Department of Preventive Medicine, School of Medical Science and Laboratory Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China ; Department of Molecular Cell Biology and Toxicology, Cancer Center, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Shuhan Miao
- Department of Molecular Cell Biology and Toxicology, Cancer Center, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China ; Department of Health Care, The Fourth Affiliated Hospital, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Yan Wang
- Department of Preventive Medicine, School of Medical Science and Laboratory Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China
| | - Jianwei Zhou
- Department of Molecular Cell Biology and Toxicology, Cancer Center, School of Public Health, Nanjing Medical University, Nanjing, Jiangsu 210029, P.R. China
| | - Rongzhu Lu
- Department of Preventive Medicine, School of Medical Science and Laboratory Medicine, Jiangsu University, Zhenjiang, Jiangsu 212001, P.R. China ; Department of Public Health Laboratory Science, School of Medical Science and Laboratory Medicine, Jiangsu University, Zhenjiang, Jiangsu 212013, P.R. China
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Kim KJ, Lee J, Park Y, Lee SH. ATF3 Mediates Anti-Cancer Activity of Trans-10, cis-12-Conjugated Linoleic Acid in Human Colon Cancer Cells. Biomol Ther (Seoul) 2015; 23:134-40. [PMID: 25767681 PMCID: PMC4354314 DOI: 10.4062/biomolther.2014.107] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 11/25/2014] [Accepted: 12/11/2014] [Indexed: 12/28/2022] Open
Abstract
Conjugated linoleic acids (CLA) are a family of isomers of linoleic acid. CLA increases growth arrest and apoptosis of human colorectal cancer cells through an isomer-specific manner. ATF3 belongs to the ATF/CREB family of transcription factors and is associated with apoptosis in colorectal cancer. The present study was performed to investigate the molecular mechanism by which t10, c12-CLA stimulates ATF3 expression and apoptosis in human colorectal cancer cells. t10, c12-CLA increased an apoptosis in human colorectal cancer cells in dose dependent manner. t10, c12-CLA induced ATF3 mRNA and luciferase activity of ATF3 promoter in a dose-dependent manner. The responsible region for ATF3 transcriptional activation by t10, c12-CLA is located between −147 and −1850 of ATF3 promoter. mRNA stability of ATF3 was not affected by t10, c12-CLA treatment. t10, c12-CLA increases GSK3β expression and suppresses IGF-1-stimulated phosphorylation of Akt. The knockdown of ATF3 suppressed expression of GSK3β and NAG-1 and PARP cleavage. The results suggest that t10, c12-CLA induces apoptosis through ATF3-mediated pathway in human colorectal cancer cells.
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Affiliation(s)
- Kui-Jin Kim
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD, 20742, USA
| | - Jihye Lee
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD, 20742, USA
| | - Yeonhwa Park
- Department of Food Science, University of Massachusetts, Amherst, MA, 01003, USA
| | - Seong-Ho Lee
- Department of Nutrition and Food Science, College of Agriculture and Natural Resources, University of Maryland, College Park, MD, 20742, USA
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The induction of activating transcription factor 3 (ATF3) contributes to anti-cancer activity of Abeliophyllum distichum Nakai in human colorectal cancer cells. Altern Ther Health Med 2014; 14:487. [PMID: 25494848 PMCID: PMC4302050 DOI: 10.1186/1472-6882-14-487] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2014] [Accepted: 12/11/2014] [Indexed: 12/21/2022]
Abstract
BACKGROUND Recently, Abeliophyllum distichum Nakai (A. distichum) has been reported to exert the inhibitory effect on angiotensin converting enzyme. However, no specific pharmacological effects from A. distichum have been described. We performed in vitro study to evaluate anti-cancer properties of A. distichum and then elucidate the potential mechanisms. METHODS Cell viability was measured by MTT assay. ATF3 expression level was evaluated by Western blot or RT-PCR and ATF3 transcriptional activity was determined using a dual-luciferase assay kit after the transfection of ATF3 promoter constructs. In addition, ATF3-dependent apoptosis was evaluated by Western blot after ATF3 knockdown using ATF3 siRNA. RESULTS Exposure of ethyl acetate fraction from the parts of A. distichum including flower, leaf and branch to human colorectal cancer cells, breast cancer cells and hepatocellular carcinoma reduced the cell viability. The branch extracts from A. distichum (EAFAD-B) increased the expression of activating transcription factor 3 (ATF3) and promoter activity, indicating transcriptional activation of ATF3 gene by EAFAD-B. In addition, our data showed that EAFAD-B-responsible sites might be between -147 and -85 region of the ATF3 promoter. EAFAD-B-induced ATF3 promoter activity was significantly decreased when the CREB site was deleted. However, the deletion of Ftz sites did not affect ATF3 promoter activity by EAFAD-B. We also observed that inhibition of p38MAPK and GSK3β attenuated EAFAD-B-mediated ATF3 promoter activation. Also, EAFAD-B contributes at least in part to increase of ATF3 accumulation. CONCLUSION These findings suggest that the anti-cancer activity of EAFAD-B may be a result of ATF3 promoter activation and subsequent increase of ATF3 expression.
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Hao ZF, Su YM, Wang CM, Yang RY. Activating transcription factor 3 interferes with p21 activation in histone deacetylase inhibitor-induced growth inhibition of epidermoid carcinoma cells. Tumour Biol 2014; 36:1471-6. [PMID: 25371069 DOI: 10.1007/s13277-014-2618-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2014] [Accepted: 09/09/2014] [Indexed: 12/31/2022] Open
Abstract
Inhibition of histone deacetylase (HDAC) activity by HDAC inhibitors (HDACis) results in cancer cell growth inhibition, and HDACis have been revealed as potential anti-skin cancer agents. p21 is a cyclin-dependent kinase inhibitor and an essential regulator of growth inhibition. Recently, we reported that activating transcription factor 3 (ATF3) could significantly promote skin cancer cell growth. This study explored the relationship between ATF3 and HDACi-induced growth inhibition of epidermoid carcinoma cells. We found that trichostatin A (TSA) treatment inhibited cell growth in A431 epidermoid carcinoma cells in a dose-dependent manner. Simultaneously, p21 and ATF3 expression levels were upregulated and downregulated upon TSA stimulation, respectively. ATF3 overexpression promoted cell growth and downregulated p21 expression. In contrast, ATF3 depletion resulted in cell growth reduction and p21 transcriptional upregulation. More importantly, ATF3 overexpression partially antagonized TSA-induced growth inhibition and p21 activation. Collectively, these data demonstrate that ATF3 acts as an essential negative regulator of TSA-induced cell growth inhibition through interfering with TSA-induced p21 activation.
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Affiliation(s)
- Zhen-Feng Hao
- Institute of Skin Damage and Repair, General Hospital of Beijing Region of PLA, Beijing, 100700, China
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Park GH, Park JH, Song HM, Eo HJ, Kim MK, Lee JW, Lee MH, Cho KH, Lee JR, Cho HJ, Jeong JB. Anti-cancer activity of Ginger (Zingiber officinale) leaf through the expression of activating transcription factor 3 in human colorectal cancer cells. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 14:408. [PMID: 25338635 PMCID: PMC4210498 DOI: 10.1186/1472-6882-14-408] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Accepted: 10/15/2014] [Indexed: 12/31/2022]
Abstract
BACKGROUND Ginger leaf (GL) has long been used as a vegetable, tea and herbal medicine. However, its pharmacological properties are still poorly understood. Thus, we performed in vitro studies to evaluate anti-cancer properties of ginger leaf and then elucidate the potential mechanisms involved. METHODS Cell viability was measured by MTT assay. ATF3 expression level was evaluated by Western blot or RT-PCR and ATF3 transcriptional activity was determined using a dual-luciferase assay kit after the transfection of ATF3 promoter constructs. In addition, ATF3-dependent apoptosis was evaluated by Western blot after ATF3 knockdown using ATF3 siRNA. RESULTS Exposure of GL to human colorectal cancer cells (HCT116, SW480 and LoVo cells) reduced the cell viability and induced apoptosis in a dose-dependent manner. In addition, GL reduced cell viability in MCF-7, MDA-MB-231 and HepG-2 cells. ATF3 knockdown attenuated GL-mediated apoptosis. GL increased activating transcription factor 3 (ATF3) expressions in both protein and mRNA level and activated ATF3 promoter activity, indicating transcriptional activation of ATF3 gene by GL. In addition, our data showed that GL-responsible sites might be between -318 and -85 region of the ATF3 promoter. We also observed that ERK1/2 inhibition by PD98059 attenuated GL-mediated ATF3 expression but not p38 inhibition by SB203580, indicating ERK1/2 pathway implicated in GL-induced ATF3 activation. CONCLUSIONS These findings suggest that the reduction of cell viability and apoptosis by GL may be a result of ATF3 promoter activation and subsequent increase of ATF3 expression through ERK1/2 activation in human colorectal cancer cells.
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Affiliation(s)
- Gwang Hun Park
- />Department of Bioresource Sciences, Andong National University, Andong, 760749 South Korea
| | - Jae Ho Park
- />Department of Medicinal Plant Science, Jungwon University, Goesan, 367805 South Korea
| | - Hun Min Song
- />Department of Bioresource Sciences, Andong National University, Andong, 760749 South Korea
| | - Hyun Ji Eo
- />Department of Bioresource Sciences, Andong National University, Andong, 760749 South Korea
| | - Mi Kyoung Kim
- />Department of Bioresource Sciences, Andong National University, Andong, 760749 South Korea
| | - Jin Wook Lee
- />Department of Bioresource Sciences, Andong National University, Andong, 760749 South Korea
| | - Man Hyo Lee
- />Gyeongbuk Institute for Bio-industry, Andong, 760380 South Korea
| | - Kiu-Hyung Cho
- />Gyeongbuk Institute for Bio-industry, Andong, 760380 South Korea
| | - Jeong Rak Lee
- />Gyeongbuk Institute for Bio-industry, Andong, 760380 South Korea
| | - Hyeon Je Cho
- />Gyeongbuk Institute for Bio-industry, Andong, 760380 South Korea
| | - Jin Boo Jeong
- />Department of Bioresource Sciences, Andong National University, Andong, 760749 South Korea
- />Insititute of Agricultural Science and Technology, Andong National University, Andong, 760749 South Korea
- />Department of Medicinal Plant Resources, Andong National University, Andong, 760749 South Korea
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Lee JR, Lee MH, Eo HJ, Park GH, Song HM, Kim MK, Lee JW, Jeong JB. The contribution of activating transcription factor 3 to apoptosis of human colorectal cancer cells by protocatechualdehyde, a naturally occurring phenolic compound. Arch Biochem Biophys 2014; 564:203-10. [PMID: 25447816 DOI: 10.1016/j.abb.2014.10.005] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2014] [Revised: 10/04/2014] [Accepted: 10/10/2014] [Indexed: 01/16/2023]
Abstract
Protocatechualdehyde (PCA) is one of the important compounds found in barley, green cavendish bananas and grapevine leaves. PCA shows anti-cancer activities in breast, leukemia and colorectal cancer cells. Previous study reported that PCA exerts anti-cancer activity through down-regulating cyclin D1 and HDAC2 in human colorectal cancer cells. However, the underlying mechanisms for the expression of activating transcription factor 3 (ATF3) by PCA has not been studied. Thus, we performed in vitro study to investigate if treatment of PCA affects ATF3 expression and ATF3-mediated apoptosis in human colorectal cancer cells. PCA decreased cell viability in a dose-dependent manner in HCT116 and SW480 cells. In addition, PCA reduced cell viability in MCF-7, MDA-MB-231 and HepG-2 cells. Exposure of PCA activated the levels of ATF3 protein and mRNA in HCT116 and SW480 cells. Inhibition of ERK1/2/ by PD98059 and p38 by SB203580 inhibited PCA-induced ATF3 expression and transcriptional activation. ATF3-knockdown inhibited PCA-induced apoptosis and cell viability. In addition, ATF3 overexpression enhanced PCA-mediated cleavage of PARP. These findings suggest that inhibition of cell viability and apoptosis by PCA may be result of ATF3 expression through ERK1/2 and p38-mediated transcriptional activation.
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Affiliation(s)
- Jeong Rak Lee
- Gyeongbuk Institute for Bio-industry, Andong 760380, Republic of Korea
| | - Man Hyo Lee
- Gyeongbuk Institute for Bio-industry, Andong 760380, Republic of Korea
| | - Hyun Ji Eo
- Department of Bioresource Sciences, Andong National University, Andong 760749, Republic of Korea
| | - Gwang Hun Park
- Department of Bioresource Sciences, Andong National University, Andong 760749, Republic of Korea
| | - Hun Min Song
- Department of Bioresource Sciences, Andong National University, Andong 760749, Republic of Korea
| | - Mi Kyoung Kim
- Department of Bioresource Sciences, Andong National University, Andong 760749, Republic of Korea
| | - Jin Wook Lee
- Department of Bioresource Sciences, Andong National University, Andong 760749, Republic of Korea
| | - Jin Boo Jeong
- Department of Bioresource Sciences, Andong National University, Andong 760749, Republic of Korea; Institute of Agricultural Science and Technology, Andong National University, Andong 760749, Republic of Korea.
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Hao ZF, Ao JH, Zhang J, Su YM, Yang RY. ATF3 activates Stat3 phosphorylation through inhibition of p53 expression in skin cancer cells. Asian Pac J Cancer Prev 2014; 14:7439-44. [PMID: 24460316 DOI: 10.7314/apjcp.2013.14.12.7439] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
AIM ATF3, a member of the ATF/CREB family of transcription factors, has been found to be selectively induced by calcineurin/NFAT inhibition and to enhance keratinocyte tumor formation, although the precise role of ATF3 in human skin cancer and possible mechanisms remain unknown. METHODS In this study, clinical analysis of 30 skin cancer patients and 30 normal donors revealed that ATF3 was accumulated in skin cancer tissues. Functional assays demonstrated that ATF3 significantly promoted skin cancer cell proliferation. RESULTS Mechanically, ATF3 activated Stat3 phosphorylation in skin cancer cell through regulation of p53 expression. Moreover, the promotion effect of ATF3 on skin cancer cell proliferation was dependent on the p53-Stat3 signaling cascade. CONCLUSION Together, the results indicate that ATF3 might promote skin cancer cell proliferation and enhance skin keratinocyte tumor development through inhibiting p53 expression and then activating Stat3 phosphorylation.
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Affiliation(s)
- Zhen-Feng Hao
- Graduate Management Brigade, Third Military Medical University, Chongqing, China E-mail :
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Eo HJ, Park JH, Park GH, Lee MH, Lee JR, Koo JS, Jeong JB. Anti-inflammatory and anti-cancer activity of mulberry (Morus alba L.) root bark. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2014; 14:200. [PMID: 24962785 PMCID: PMC4074313 DOI: 10.1186/1472-6882-14-200] [Citation(s) in RCA: 63] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/12/2014] [Accepted: 06/23/2014] [Indexed: 12/20/2022]
Abstract
Background Root bark of mulberry (Morus alba L.) has been used in herbal medicine as anti-phlogistic, liver protective, kidney protective, hypotensive, diuretic, anti-cough and analgesic agent. However, the anti-cancer activity and the potential anti-cancer mechanisms of mulberry root bark have not been elucidated. We performed in vitro study to investigate whether mulberry root bark extract (MRBE) shows anti-inflammatory and anti-cancer activity. Methods In anti-inflammatory activity, NO was measured using the griess method. iNOS and proteins regulating NF-κB and ERK1/2 signaling were analyzed by Western blot. In anti-cancer activity, cell growth was measured by MTT assay. Cleaved PARP, ATF3 and cyclin D1 were analyzed by Western blot. Results In anti-inflammatory effect, MRBE blocked NO production via suppressing iNOS over-expression in LPS-stimulated RAW264.7 cells. In addition, MRBE inhibited NF-κB activation through p65 nuclear translocation via blocking IκB-α degradation and ERK1/2 activation via its hyper-phosphorylation. In anti-cancer activity, MRBE deos-dependently induced cell growth arrest and apoptosis in human colorectal cancer cells, SW480. MRBE treatment to SW480 cells activated ATF3 expression and down-regulated cyclin D1 level. We also observed that MRBE-induced ATF3 expression was dependent on ROS and GSK3β. Moreover, MRBE-induced cyclin D1 down-regulation was mediated from cyclin D1 proteasomal degradation, which was dependent on ROS. Conclusions These findings suggest that mulberry root bark exerts anti-inflammatory and anti-cancer activity.
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