101
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Rodríguez-Hernández MA, de la Cruz-Ojeda P, López-Grueso MJ, Navarro-Villarán E, Requejo-Aguilar R, Castejón-Vega B, Negrete M, Gallego P, Vega-Ochoa Á, Victor VM, Cordero MD, Del Campo JA, Bárcena JA, Padilla CA, Muntané J. Integrated molecular signaling involving mitochondrial dysfunction and alteration of cell metabolism induced by tyrosine kinase inhibitors in cancer. Redox Biol 2020; 36:101510. [PMID: 32593127 PMCID: PMC7322178 DOI: 10.1016/j.redox.2020.101510] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Accepted: 03/16/2020] [Indexed: 12/21/2022] Open
Abstract
Cancer cells have unlimited replicative potential, insensitivity to growth-inhibitory signals, evasion of apoptosis, cellular stress, and sustained angiogenesis, invasiveness and metastatic potential. Cancer cells adequately adapt cell metabolism and integrate several intracellular and redox signaling to promote cell survival in an inflammatory and hypoxic microenvironment in order to maintain/expand tumor phenotype. The administration of tyrosine kinase inhibitor (TKI) constitutes the recommended therapeutic strategy in different malignancies at advanced stages. There are important interrelationships between cell stress, redox status, mitochondrial function, metabolism and cellular signaling pathways leading to cell survival/death. The induction of apoptosis and cell cycle arrest widely related to the antitumoral properties of TKIs result from tightly controlled events involving different cellular compartments and signaling pathways. The aim of the present review is to update the most relevant studies dealing with the impact of TKI treatment on cell function. The induction of endoplasmic reticulum (ER) stress and Ca2+ disturbances, leading to alteration of mitochondrial function, redox status and phosphatidylinositol 3-kinase (PI3K)-protein kinase B (Akt)-mammalian target of rapamycin (mTOR) and AMP-activated protein kinase (AMPK) signaling pathways that involve cell metabolism reprogramming in cancer cells will be covered. Emphasis will be given to studies that identify key components of the integrated molecular pattern including receptor tyrosine kinase (RTK) downstream signaling, cell death and mitochondria-related events that appear to be involved in the resistance of cancer cells to TKI treatments.
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Affiliation(s)
- María A Rodríguez-Hernández
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain; Centro de Investigación Biomédica en red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - P de la Cruz-Ojeda
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain
| | - Mª José López-Grueso
- Department of Biochemistry and Molecular Biology, University of Cordoba, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Cordoba, Spain
| | - Elena Navarro-Villarán
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain; Centro de Investigación Biomédica en red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain
| | - Raquel Requejo-Aguilar
- Department of Biochemistry and Molecular Biology, University of Cordoba, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Cordoba, Spain
| | - Beatriz Castejón-Vega
- Research Laboratory, Oral Medicine Department, University of Seville, Seville, Spain
| | - María Negrete
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain
| | - Paloma Gallego
- Unit for the Clinical Management of Digestive Diseases, Hospital University "Nuestra Señora de Valme", Sevilla, Spain
| | - Álvaro Vega-Ochoa
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain
| | - Victor M Victor
- Centro de Investigación Biomédica en red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain; Service of Endocrinology and Nutrition, Hospital University "Doctor Peset", Foundation for the Promotion of Health and Biomedical Research in the Valencian Region (FISABIO), Valencia, Spain; Department of Physiology, University of Valencia, Valencia, Spain
| | - Mario D Cordero
- Research Laboratory, Oral Medicine Department, University of Seville, Seville, Spain; Department of Physiology, Institute of Nutrition and Food Technology "José Mataix", Biomedical Research Center (CIBM), University of Granada, Armilla, Spain
| | - José A Del Campo
- Unit for the Clinical Management of Digestive Diseases, Hospital University "Nuestra Señora de Valme", Sevilla, Spain
| | - J Antonio Bárcena
- Department of Biochemistry and Molecular Biology, University of Cordoba, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Cordoba, Spain
| | - C Alicia Padilla
- Department of Biochemistry and Molecular Biology, University of Cordoba, Maimonides Biomedical Research Institute of Cordoba (IMIBIC), Cordoba, Spain
| | - Jordi Muntané
- Institute of Biomedicine of Seville (IBiS), IBiS/Hospital University "Virgen del Rocío"/CSIC/University of Seville, Seville, Spain; Centro de Investigación Biomédica en red de Enfermedades Hepáticas y Digestivas (CIBEREHD), Madrid, Spain; Department of General Surgery, Hospital University "Virgen del Rocío"/IBiS/CSIC/University of Seville, Seville, Spain.
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102
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Andrighetti T, Bohar B, Lemke N, Sudhakar P, Korcsmaros T. MicrobioLink: An Integrated Computational Pipeline to Infer Functional Effects of Microbiome-Host Interactions. Cells 2020; 9:cells9051278. [PMID: 32455748 PMCID: PMC7291277 DOI: 10.3390/cells9051278] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Revised: 05/15/2020] [Accepted: 05/19/2020] [Indexed: 02/07/2023] Open
Abstract
Microbiome–host interactions play significant roles in health and in various diseases including autoimmune disorders. Uncovering these inter-kingdom cross-talks propels our understanding of disease pathogenesis and provides useful leads on potential therapeutic targets. Despite the biological significance of microbe–host interactions, there is a big gap in understanding the downstream effects of these interactions on host processes. Computational methods are expected to fill this gap by generating, integrating, and prioritizing predictions—as experimental detection remains challenging due to feasibility issues. Here, we present MicrobioLink, a computational pipeline to integrate predicted interactions between microbial and host proteins together with host molecular networks. Using the concept of network diffusion, MicrobioLink can analyse how microbial proteins in a certain context are influencing cellular processes by modulating gene or protein expression. We demonstrated the applicability of the pipeline using a case study. We used gut metaproteomic data from Crohn’s disease patients and healthy controls to uncover the mechanisms by which the microbial proteins can modulate host genes which belong to biological processes implicated in disease pathogenesis. MicrobioLink, which is agnostic of the microbial protein sources (bacterial, viral, etc.), is freely available on GitHub.
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Affiliation(s)
- Tahila Andrighetti
- Earlham Institute, Norwich Research Park, Norwich NR4 7UZ, UK; (T.A.); (B.B.)
- Institute of Biosciences, São Paulo University (UNESP), Botucatu 18618-689, SP, Brazil;
| | - Balazs Bohar
- Earlham Institute, Norwich Research Park, Norwich NR4 7UZ, UK; (T.A.); (B.B.)
- Department of Genetics, Eötvös Loránd University, Budapest 1117, Hungary
| | - Ney Lemke
- Institute of Biosciences, São Paulo University (UNESP), Botucatu 18618-689, SP, Brazil;
| | - Padhmanand Sudhakar
- Earlham Institute, Norwich Research Park, Norwich NR4 7UZ, UK; (T.A.); (B.B.)
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UQ, UK
- Department of Chronic Diseases, Metabolism and Ageing, KU Leuven BE-3000, Leuven, Belgium
- Correspondence: (T.K.); (P.S.)
| | - Tamas Korcsmaros
- Earlham Institute, Norwich Research Park, Norwich NR4 7UZ, UK; (T.A.); (B.B.)
- Quadram Institute Bioscience, Norwich Research Park, Norwich NR4 7UQ, UK
- Correspondence: (T.K.); (P.S.)
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103
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Thorburn A. Crosstalk between autophagy and apoptosis: Mechanisms and therapeutic implications. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2020; 172:55-65. [PMID: 32620250 DOI: 10.1016/bs.pmbts.2020.04.023] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The cellular recycling process of macroautophagy, which is the mechanism by which cellular material is delivered to lysosomes via double membraned vesicles called autophagosomes, is intimately connected to programmed cell death pathways, especially apoptosis. In this article, I discuss some underlying mechanisms and their implications for improving cancer therapy and propose that the approaches that have been taken to understand the autophagy-apoptosis connection to enhance cancer drug action can serve as a model for the kinds of information that should be developed to understand how autophagy controls other biological processes as well.
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Affiliation(s)
- Andrew Thorburn
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO, United States.
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104
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Chung PED, Gendoo DMA, Ghanbari-Azarnier R, Liu JC, Jiang Z, Tsui J, Wang DY, Xiao X, Li B, Dubuc A, Shih D, Remke M, Ho B, Garzia L, Ben-David Y, Kang SG, Croul S, Haibe-Kains B, Huang A, Taylor MD, Zacksenhaus E. Modeling germline mutations in pineoblastoma uncovers lysosome disruption-based therapy. Nat Commun 2020; 11:1825. [PMID: 32286280 PMCID: PMC7156401 DOI: 10.1038/s41467-020-15585-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Accepted: 03/13/2020] [Indexed: 12/19/2022] Open
Abstract
Pineoblastoma is a rare pediatric cancer induced by germline mutations in the tumor suppressors RB1 or DICER1. Presence of leptomeningeal metastases is indicative of poor prognosis. Here we report that inactivation of Rb plus p53 via a WAP-Cre transgene, commonly used to target the mammary gland during pregnancy, induces metastatic pineoblastoma resembling the human disease with 100% penetrance. A stabilizing mutation rather than deletion of p53 accelerates metastatic dissemination. Deletion of Dicer1 plus p53 via WAP-Cre also predisposes to pineoblastoma, albeit with lower penetrance. In silico analysis predicts tricyclic antidepressants such as nortriptyline as potential therapeutics for both pineoblastoma models. Nortriptyline disrupts the lysosome, leading to accumulation of non-functional autophagosome, cathepsin B release and pineoblastoma cell death. Nortriptyline further synergizes with the antineoplastic drug gemcitabine to effectively suppress pineoblastoma in our preclinical models, offering new modality for this lethal childhood malignancy.
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Affiliation(s)
- Philip E D Chung
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON, M5G 2M1, Canada.,Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Deena M A Gendoo
- Centre for Computational Biology, Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham, UK
| | - Ronak Ghanbari-Azarnier
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON, M5G 2M1, Canada.,Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada
| | - Jeff C Liu
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON, M5G 2M1, Canada
| | - Zhe Jiang
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON, M5G 2M1, Canada
| | - Jennifer Tsui
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON, M5G 2M1, Canada
| | - Dong-Yu Wang
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON, M5G 2M1, Canada
| | - Xiao Xiao
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON, M5G 2M1, Canada.,The Key laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, 550014, China.,State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550025, China
| | - Bryan Li
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada.,State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550025, China
| | - Adrian Dubuc
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada.,Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - David Shih
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada.,Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Marc Remke
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Ben Ho
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Livia Garzia
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada.,Faculty of Medicine, department of surgery, McGill University, Quebec, Canada
| | - Yaacov Ben-David
- The Key laboratory of Chemistry for Natural Products of Guizhou Province and Chinese Academic of Sciences, Guiyang, Guizhou, 550014, China.,State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550025, China
| | - Seok-Gu Kang
- Neurosurgery, Brain Tumor Center, Severance Hospital, Yonsei University College of Medicine, Seoul, Republic of Korea
| | - Sidney Croul
- Department of Pathology & Laboratory Medicine, Division of Anatomical Pathology, Dalhousie University, Halifax, Canada
| | - Benjamin Haibe-Kains
- Princess Margaret Cancer Centre, University Health Network, Toronto, ON, Canada.,Department of Medical Biophysics, University of Toronto, Toronto, Canada.,Vector Institute, and Ontario Institute For Cancer Research, Toronto, ON, Canada
| | - Annie Huang
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada.,State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550025, China
| | - Michael D Taylor
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada.,State Key Laboratory for Functions and Applications of Medicinal Plants, Guizhou Medical University, Guiyang, 550025, China.,The Arthur and Sonia Labatt Brain Tumour Research Centre, The Hospital for Sick Children, Toronto, ON, Canada
| | - Eldad Zacksenhaus
- Toronto General Research Institute, University Health Network, 67 College Street, Toronto, ON, M5G 2M1, Canada. .,Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, Canada. .,Department of Medicine, University of Toronto, Toronto, ON, Canada.
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105
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Potočnjak I, Šimić L, Gobin I, Vukelić I, Domitrović R. Antitumor activity of luteolin in human colon cancer SW620 cells is mediated by the ERK/FOXO3a signaling pathway. Toxicol In Vitro 2020; 66:104852. [PMID: 32268164 DOI: 10.1016/j.tiv.2020.104852] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 04/03/2020] [Accepted: 04/03/2020] [Indexed: 01/13/2023]
Abstract
The aim of this study was to investigate the mechanism of the anticancer activity of luteolin in metastatic human colon cancer SW620 cells. Luteolin dose-dependently reduced the viability and proliferation of SW620 cells and increased the expression of antioxidant enzymes. The expression of antiapoptotic protein Bcl-2 decreased whereas the expression of proapoptotic proteins Bax and caspase-3 increased by luteolin treatment, resulting in increased poly (ADP-ribose) polymerase (PARP) cleavage and terminal deoxynucleotidyl transferase dUTP nick end labeling (TUNEL) positivity. Luteolin also increased the expression of autophagic proteins Beclin-1, autophagy-related protein 5 (Atg5) and microtubule-associated protein 1A/1B-light chain 3 beta-I/II (LC3B-I/II), while the usage of 3-methyladenine suggested a prosurvival role of autophagy. Moreover, treatment with luteolin induced reversal of the epithelial-mesenchymal transition process through the suppression of the wingless-related integration site protein (Wnt)/β-catenin pathway. The cytotoxic activity of luteolin coincided with the activation of extracellular signal-regulated kinase 1/2 (ERK1/2) and forkhead box O3a (FOXO3a). Treatment with the mitogen-activated protein kinase kinase (MEK) inhibitor PD0325901 inhibited ERK-dependent FOXO3a phosphorylation, resulting in increased FOXO3a expression and apoptosis, with the suppression of autophagy. The results of the current study suggest the antitumor activity of luteolin in SW620 cells through the ERK/FOXO3a-dependent mechanism, as well as its antimetastatic potential.
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Affiliation(s)
- Iva Potočnjak
- Department of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Lidija Šimić
- Department of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Ivana Gobin
- Department of Microbiology and Parasitology, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Iva Vukelić
- Department of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Rijeka, Rijeka, Croatia
| | - Robert Domitrović
- Department of Medical Chemistry, Biochemistry and Clinical Chemistry, Faculty of Medicine, University of Rijeka, Rijeka, Croatia.
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106
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Sher AA, Gao A, Coombs KM. Autophagy Modulators Profoundly Alter the Astrocyte Cellular Proteome. Cells 2020; 9:cells9040805. [PMID: 32225060 PMCID: PMC7226796 DOI: 10.3390/cells9040805] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 03/16/2020] [Accepted: 03/24/2020] [Indexed: 12/15/2022] Open
Abstract
Autophagy is a key cellular process that involves constituent degradation and recycling during cellular development and homeostasis. Autophagy also plays key roles in antimicrobial host defense and numerous pathogenic organisms have developed strategies to take advantage of and/or modulate cellular autophagy. Several pharmacologic compounds, such as BafilomycinA1, an autophagy inducer, and Rapamycin, an autophagy inhibitor, have been used to modulate autophagy, and their effects upon notable autophagy markers, such as LC3 protein lipidation and Sequestosome-1/p62 alterations are well defined. We sought to understand whether such autophagy modulators have a more global effect upon host cells and used a recently developed aptamer-based proteomic platform (SOMAscan®) to examine 1305 U-251 astrocytic cell proteins after the cells were treated with each compound. These analyses, and complementary cytokine array analyses of culture supernatants after drug treatment, revealed substantial perturbations in the U-251 astrocyte cellular proteome. Several proteins, including cathepsins, which have a role in autophagy, were differentially dysregulated by the two drugs as might be expected. Many proteins, not previously known to be involved in autophagy, were significantly dysregulated by the compounds, and several, including lactadherin and granulins, were up-regulated by both drugs. These data indicate that these two compounds, routinely used to help dissect cellular autophagy, have much more profound effects upon cellular proteins.
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Affiliation(s)
- Affan Ali Sher
- Department of Medical Microbiology & Infectious Diseases, University of Manitoba, Winnipeg, MB R3E 0J9, Canada;
| | - Ang Gao
- Manitoba Centre for Proteomics & Systems Biology, University of Manitoba, Winnipeg, MB R3E 3P4, Canada;
| | - Kevin M. Coombs
- Department of Medical Microbiology & Infectious Diseases, University of Manitoba, Winnipeg, MB R3E 0J9, Canada;
- Manitoba Centre for Proteomics & Systems Biology, University of Manitoba, Winnipeg, MB R3E 3P4, Canada;
- Children’s Hospital Research Institute of Manitoba, Winnipeg, MB R3E 3P4, Canada
- Correspondence: ; Tel.: +1-204-789-3976
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107
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Zhang H, Wang G, Zhou R, Li X, Sun Y, Li Y, Du W, Yan X, Yang J, Chang X, Liu Z, Ma Z. SPIB promotes anoikis resistance via elevated autolysosomal process in lung cancer cells. FEBS J 2020; 287:4696-4709. [PMID: 32129936 DOI: 10.1111/febs.15272] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2019] [Revised: 01/23/2020] [Accepted: 02/29/2020] [Indexed: 12/27/2022]
Abstract
Anoikis (detachment-induced cell death) is a specific type of programmed cell death which occurs in response to the loss of the correct extracellular matrix connections. Anoikis resistance is an important mechanism in cancer invasiveness and metastatic behavior. Autophagy, on the other hand, involves the degradation of damaged organelles and the recycling of misfolded proteins and intracellular components. However, the intersection of these two cellular responses in lung cancer cells has not been extensively studied. Here, we identified that upon matrix deprivation, the lymphocyte lineage-specific Ets transcription factor SPIB was activated and directly enhanced SNAP47 transcription in certain lung cancer cells. Loss of attachment-induced autophagy significantly increased anoikis resistance by SPIB activation. Consistent with this function, SPIB depletion by short hairpin RNA abrogated SNAP47 transcriptional activation upon matrix deprivation. Therefore, these data delineate an important role of SPIB in autophagy-mediated anoikis resistance in lung cancer cells. Accordingly, these findings suggest that manipulating SPIB-regulated pathways in vivo and evaluating the impact of anoikis resistance warrant further investigation. DATABASE: RNA sequencing and ChIP sequencing data are available in Gene Expression Omnibus database under the accession numbers GSE106592 and GSE125561, respectively.
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Affiliation(s)
- Hua Zhang
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Guobin Wang
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Ruimin Zhou
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Xiaobo Li
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Yanan Sun
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Yanzhe Li
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Wei Du
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Xiaojie Yan
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Jie Yang
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Xinzhong Chang
- Department of Breast Cancer, Breast Cancer Center, Tianjin Medical University Cancer Institute and Hospital, China
| | - Zhe Liu
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
| | - Zhenyi Ma
- Department of Immunology, Biochemistry and Molecular Biology, School of Basic Medical Sciences, Tianjin Medical University, China.,Tianjin Key Laboratory of Medical Epigenetics, Key Laboratory of Immune Microenvironment and Disease (Ministry of Education), Tianjin Medical University, China
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108
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Mulcahy Levy JM, Thorburn A. Autophagy in cancer: moving from understanding mechanism to improving therapy responses in patients. Cell Death Differ 2020; 27:843-857. [PMID: 31836831 PMCID: PMC7206017 DOI: 10.1038/s41418-019-0474-7] [Citation(s) in RCA: 250] [Impact Index Per Article: 62.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2019] [Revised: 11/12/2019] [Accepted: 11/18/2019] [Indexed: 12/15/2022] Open
Abstract
Autophagy allows for cellular material to be delivered to lysosomes for degradation resulting in basal or stress-induced turnover of cell components that provide energy and macromolecular precursors. These activities are thought to be particularly important in cancer where both tumor-promoting and tumor-inhibiting functions of autophagy have been described. Autophagy has also been intricately linked to apoptosis and programmed cell death, and understanding these interactions is becoming increasingly important in improving cancer therapy and patient outcomes. In this review, we consider how recent discoveries about how autophagy manipulation elicits its effects on cancer cell behavior can be leveraged to improve therapeutic responses.
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Affiliation(s)
- Jean M Mulcahy Levy
- Department of Pediatrics, University of Colorado School of Medicine, Aurora, CO, 80045, USA
- Morgan Adams Foundation Pediatric Brain Tumor Research Program, Children's Hospital Colorado, Aurora, CO, USA
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO, 80045, USA
| | - Andrew Thorburn
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO, 80045, USA.
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109
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Ivanov VN, Grabham PW, Wu CC, Hei TK. Inhibition of autophagic flux differently modulates cannabidiol-induced death in 2D and 3D glioblastoma cell cultures. Sci Rep 2020; 10:2687. [PMID: 32060308 PMCID: PMC7021896 DOI: 10.1038/s41598-020-59468-4] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2019] [Accepted: 12/19/2019] [Indexed: 02/06/2023] Open
Abstract
Radiotherapy combined with chemotherapy is the major treatment modality for human glioblastoma multiforme (GBM). GBMs eventually relapse after treatment and the average survival of GBM patients is less than two years. There is some evidence that cannabidiol (CBD) can induce cell death and increases the radiosensitivity of GBM by enhancing apoptosis. Beside initiation of death, CBD has been demonstrated as an inducer of autophagy. In the present study, we address the question whether CBD simultaneously induces a protective effect in GBM by upregulating autophagy. Addition of chloroquine that suppressed autophagic flux to 2D GBM cultures increased CBD-induced cell death, presenting proof for the protective autophagy. Blockage of autophagy upregulated radiation-induced cytotoxicity but only modestly affected the levels of cell death in CBD- or CBD/γ-irradiated 3D GBM cultures. Furthermore, CBD enhanced the pro-apoptotic activities of JNK1/2 and MAPK p38 signaling cascades while partially downregulated the pro-survival PI3K-AKT cascade, thereby changing a balance between cell death and survival. Suppression of JNK activation partially reduced CBD-induced cell death in 3D GBM cultures. In contrast, co-treatment of CBD-targeted cells with inhibitors of PI3K-AKT-NF-κB, IKK-NF-κB or JAK2-STAT3 pathways killed surviving GBM cells in both 2D and 3D cultures, potentially improving the therapeutic ratio of GBM.
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Affiliation(s)
- Vladimir N Ivanov
- Center for Radiological Research, Department of Radiation Oncology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA.
| | - Peter W Grabham
- Center for Radiological Research, Department of Radiation Oncology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Cheng-Chia Wu
- Center for Radiological Research, Department of Radiation Oncology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
| | - Tom K Hei
- Center for Radiological Research, Department of Radiation Oncology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, 10032, USA
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110
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Wang Y, Liang HX, Zhang CM, Zou M, Zou BB, Wei W, Hu W. FOXO3/TRIM22 axis abated the antitumor effect of gemcitabine in non-small cell lung cancer via autophagy induction. Transl Cancer Res 2020; 9:937-948. [PMID: 35117439 PMCID: PMC8798778 DOI: 10.21037/tcr.2019.12.33] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Accepted: 11/29/2019] [Indexed: 11/15/2022]
Abstract
Background Non-small cell lung cancer (NSCLC) accounts for more than 80% of the total lung cancer and gemcitabine (GEM)-based chemotherapy is the first-line therapeutic approach for NSCLC treatment. Owing to acquired chemo-resistance, the prognosis of NSCLC patients receiving GEM treatment is still poor. Methods Dysregulation of mRNAs in GEM-resistant (GR) NSCLC cells comparing to parental cells were profiled by analyzing GSEA6914 datasets from GEO database. Additionally, qRT-PCR were performed on clinically collected patient serum samples and transplanted tumor tissues and GEM-resistant (GR)/sensitive (GS) cell lines. In order to explore the functional role of tripartite motif protein 22 (TRIM22), gain and loss-of-function cell models were constructed in A549 and A549/GR respectively. MTT and Annexin V-FITC/propidium iodide (PI) staining assay were carried out to access the response to GEM of A549 and A549/GR cells. Observation of RFP-LC3 puncta and western blot detection of autophagy markers were used to evaluate autophagy. Bi-luciferase reporter assay was used to confirm the transcriptional regulatory relationship. Rescue experiments were carried out to confirm the FOXO3/TRIM22 regulatory axis in GEM susceptibility. Results TRIM22 was significantly upregulated in GR patient serum samples, transplanted tumor tissues and NSCLC cells which was negatively transcriptional regulated by FOXO3. TRIM22 overexpression attenuated the sensitivity of A549 to GEM and its depletion promoted the sensitivity of A549/GR to GEM. Additionally, TRIM22 promoted GEM-induced pro-survival autophagy to protected NSCLC cells from apoptosis. Conclusions TRIM22 was significantly upregulated in GR lung adenocarcinoma cell line A549 which is negatively transcriptional regulated by FOXO3. Due to the enhancement of pro-survival autophagy induced by TRIM22, the A549 cells became less sensitive to GEM. This study may provide a basis for screening target of liquid biopsy for predicting GEM sensitivity in NSCLC.
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Affiliation(s)
- Yang Wang
- Department of Pathology, the Second Xiangya Hospital of Central South University, Changsha 410000, China
| | - Heng-Xing Liang
- Department of Thoracic Surgery, the Second Xiangya Hospital of Central South University, Changsha 410000, China
| | - Chun-Min Zhang
- Institute of Foreign Languages, Central South University, Changsha 410000, China
| | - Min Zou
- Department of Thoracic Surgery, the Second Xiangya Hospital of Central South University, Changsha 410000, China
| | - Bi-Bo Zou
- Department of Thoracic Surgery, the Second Xiangya Hospital of Central South University, Changsha 410000, China
| | - Wei Wei
- Institute of Transformation Medicine Affiliated to Hunan Yearth Biotechnology Co., Ltd. Changsha 410000, China
| | - Wen Hu
- Department of Thoracic Surgery, the Second Xiangya Hospital of Central South University, Changsha 410000, China
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111
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Miller DR, Cramer SD, Thorburn A. The interplay of autophagy and non-apoptotic cell death pathways. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2020; 352:159-187. [PMID: 32334815 DOI: 10.1016/bs.ircmb.2019.12.004] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Autophagy, the process of macromolecular degradation through the lysosome, has been extensively studied for the past decade or two. Autophagy can regulate cell death, especially apoptosis, through selective degradation of both positive and negative apoptosis regulators. However, multiple other programmed cell death pathways exist. As knowledge of these other types of cell death expand, it has been suggested that they also interact with autophagy. In this review, we discuss the molecular mechanisms that comprise three non-apoptotic forms of cell death (necroptosis, pyroptosis and ferroptosis) focusing on how the autophagy machinery regulates these different cell death mechanisms through (i) its degradative functions, i.e., true autophagy, and (ii) other non-degradative functions of the autophagy machinery such as serving as a signaling scaffold or by participating in other autophagy-independent cellular processes.
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Affiliation(s)
- Dannah R Miller
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Scott D Cramer
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States
| | - Andrew Thorburn
- Department of Pharmacology, University of Colorado Anschutz Medical Campus, Aurora, CO, United States.
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112
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Hill C, Wang Y. The importance of epithelial-mesenchymal transition and autophagy in cancer drug resistance. CANCER DRUG RESISTANCE (ALHAMBRA, CALIF.) 2020; 3:38-47. [PMID: 32226927 PMCID: PMC7100899 DOI: 10.20517/cdr.2019.75] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/09/2019] [Revised: 11/13/2019] [Accepted: 12/13/2019] [Indexed: 12/18/2022]
Abstract
Epithelial-mesenchymal transition (EMT) and autophagy are both known to play an important role in the development of cancer. Subsequently, these processes are now being utilised as targets for therapy. Cancer is globally one of the leading causes of death, and despite many advances in treatment options, patients still face many challenges. Drug-resistance in cancer-therapy is a large problem, and both EMT and autophagy have been shown to contribute. However, given the context-dependent role of these processes and the complexity of the interactions between them, elucidating how they both act alone and interact together is important. In this review, we will provide an insight into the current landscape of the interactions of autophagy and EMT in the context of malignancy, and how this ultimately may affect drug-resistance in cancer-therapy.
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Affiliation(s)
- Charlotte Hill
- School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - Yihua Wang
- School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton SO17 1BJ, UK
- Institute for Life Sciences, University of Southampton, Southampton SO17 1BJ, UK
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113
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Arias E, Cuervo AM. Pros and Cons of Chaperone-Mediated Autophagy in Cancer Biology. Trends Endocrinol Metab 2020; 31:53-66. [PMID: 31699565 PMCID: PMC7020649 DOI: 10.1016/j.tem.2019.09.007] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 09/16/2019] [Accepted: 09/17/2019] [Indexed: 11/18/2022]
Abstract
Autophagy contributes to cellular quality control and energetics through lysosomal breakdown and recycling of essential cellular components. Chaperone-mediated autophagy (CMA) adds to these autophagic functions the ability to timely and selectively degrade single tagged proteins to terminate their cellular function and, in this way, participate in the regulation of multiple cellular processes. Many cancer cells upregulate CMA for protumorigenic and prosurvival purposes. However, growing evidence supports a physiological role for CMA in limiting malignant transformation. Understanding the mechanisms behind this functional switch of CMA from antioncogenic to pro-oncogenic is fundamental for targeting CMA in cancer treatment. We summarize current understanding of CMA functions in cancer biology and discuss the basis for its context-dependent dual role in oncogenesis.
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Affiliation(s)
- Esperanza Arias
- Department of Medicine, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
| | - Ana Maria Cuervo
- Marion Bessin Liver Research Center, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Institute for Aging Studies, Albert Einstein College of Medicine, Bronx, NY 10461, USA; Department of Development and Molecular Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
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114
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Tompkins KD, Thorburn A. Regulation of Apoptosis by Autophagy to Enhance Cancer Therapy. THE YALE JOURNAL OF BIOLOGY AND MEDICINE 2019; 92:707-718. [PMID: 31866785 PMCID: PMC6913805] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
In cancer therapy, a principle goal is to kill cancer cells while minimizing death of normal cells. Traditional cytotoxic therapies and the newer agents that target specific signaling proteins that are critical for cancer cell growth do this by activating a specific type of programmed cell death - apoptosis. However, it has been well established that cancer cells have varying levels of responses to apoptotic stimuli, with some being close to an "apoptotic threshold" and others being further away and that this ultimately determines whether cancer therapy is successful or not. In this review, we will highlight how the underlying mechanisms that control apoptosis thresholds relate to another important homeostatic process in cell survival and cell death, autophagy, and discuss recent evidence suggesting how inhibition of autophagy can enhance the action of anti-cancer drugs by modulating the apoptotic response.
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Affiliation(s)
- Kenneth D. Tompkins
- Division of Endocrinology, Department of Medicine, University of Colorado School of Medicine, Aurora, CO
| | - Andrew Thorburn
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO,To whom all correspondence should be addressed: Andrew Thorburn, 12801 East 17th Avenue, RC1 South, Room 6104, Mail Stop 8303, Aurora, CO, 80045; Tel: 303-724-3290, Fax: 303-724-3664,
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115
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Stead ER, Castillo-Quan JI, Miguel VEM, Lujan C, Ketteler R, Kinghorn KJ, Bjedov I. Agephagy - Adapting Autophagy for Health During Aging. Front Cell Dev Biol 2019; 7:308. [PMID: 31850344 PMCID: PMC6892982 DOI: 10.3389/fcell.2019.00308] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2019] [Accepted: 11/12/2019] [Indexed: 12/11/2022] Open
Abstract
Autophagy is a major cellular recycling process that delivers cellular material and entire organelles to lysosomes for degradation, in a selective or non-selective manner. This process is essential for the maintenance of cellular energy levels, components, and metabolites, as well as the elimination of cellular molecular damage, thereby playing an important role in numerous cellular activities. An important function of autophagy is to enable survival under starvation conditions and other stresses. The majority of factors implicated in aging are modifiable through the process of autophagy, including the accumulation of oxidative damage and loss of proteostasis, genomic instability and epigenetic alteration. These primary causes of damage could lead to mitochondrial dysfunction, deregulation of nutrient sensing pathways and cellular senescence, finally causing a variety of aging phenotypes. Remarkably, advances in the biology of aging have revealed that aging is a malleable process: a mild decrease in signaling through nutrient-sensing pathways can improve health and extend lifespan in all model organisms tested. Consequently, autophagy is implicated in both aging and age-related disease. Enhancement of the autophagy process is a common characteristic of all principal, evolutionary conserved anti-aging interventions, including dietary restriction, as well as inhibition of target of rapamycin (TOR) and insulin/IGF-1 signaling (IIS). As an emerging and critical process in aging, this review will highlight how autophagy can be modulated for health improvement.
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Affiliation(s)
- Eleanor R Stead
- UCL Cancer Institute, University College London, London, United Kingdom
| | - Jorge I Castillo-Quan
- Section on Islet Cell and Regenerative Biology, Joslin Diabetes Center, Boston, MA, United States.,Department of Genetics, Harvard Medical School, Boston, MA, United States
| | | | - Celia Lujan
- UCL Cancer Institute, University College London, London, United Kingdom
| | - Robin Ketteler
- MRC Laboratory for Molecular Cell Biology, University College London, London, United Kingdom
| | - Kerri J Kinghorn
- Institute of Healthy Ageing, University College London, London, United Kingdom.,Department of Genetics, Evolution and Environment, University College London, London, United Kingdom.,Institute of Neurology, University College London, London, United Kingdom
| | - Ivana Bjedov
- UCL Cancer Institute, University College London, London, United Kingdom
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116
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Khan T, Relitti N, Brindisi M, Magnano S, Zisterer D, Gemma S, Butini S, Campiani G. Autophagy modulators for the treatment of oral and esophageal squamous cell carcinomas. Med Res Rev 2019; 40:1002-1060. [PMID: 31742748 DOI: 10.1002/med.21646] [Citation(s) in RCA: 49] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2019] [Revised: 10/16/2019] [Accepted: 11/08/2019] [Indexed: 02/06/2023]
Abstract
Oral squamous cell carcinomas (OSCC) and esophageal squamous cell carcinomas (ESCC) exhibit a survival rate of less than 60% and 40%, respectively. Late-stage diagnosis and lack of effective treatment strategies make both OSCC and ESCC a significant health burden. Autophagy, a lysosome-dependent catabolic process, involves the degradation of intracellular components to maintain cell homeostasis. Targeting autophagy has been highlighted as a feasible therapeutic strategy with clinical utility in cancer treatment, although its associated regulatory mechanisms remain elusive. The detection of relevant biomarkers in biological fluids has been anticipated to facilitate early diagnosis and/or prognosis for these tumors. In this context, recent studies have indicated the presence of specific proteins and small RNAs, detectable in circulating plasma and serum, as biomarkers. Interestingly, the interplay between biomarkers (eg, exosomal microRNAs) and autophagic processes could be exploited in the quest for targeted and more effective therapies for OSCC and ESCC. In this review, we give an overview of the available biomarkers and innovative targeted therapeutic strategies, including the application of autophagy modulators in OSCC and ESCC. Additionally, we provide a viewpoint on the state of the art and on future therapeutic perspectives combining the early detection of relevant biomarkers with drug discovery for the treatment of OSCC and ESCC.
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Affiliation(s)
- Tuhina Khan
- Department of Biotechnology, Chemistry, and Pharmacy, Department of Excellence 2018-2022, University of Siena, Siena, Italy
| | - Nicola Relitti
- Department of Biotechnology, Chemistry, and Pharmacy, Department of Excellence 2018-2022, University of Siena, Siena, Italy
| | - Margherita Brindisi
- Department of Pharmacy, Department of Excellence 2018-2022, University of Napoli Federico IL, Napoli, Italy
| | - Stefania Magnano
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160, Pearse Street, Dublin, Dublin 2, Ireland
| | - Daniela Zisterer
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, 152-160, Pearse Street, Dublin, Dublin 2, Ireland
| | - Sandra Gemma
- Department of Biotechnology, Chemistry, and Pharmacy, Department of Excellence 2018-2022, University of Siena, Siena, Italy
| | - Stefania Butini
- Department of Biotechnology, Chemistry, and Pharmacy, Department of Excellence 2018-2022, University of Siena, Siena, Italy
| | - Giuseppe Campiani
- Department of Biotechnology, Chemistry, and Pharmacy, Department of Excellence 2018-2022, University of Siena, Siena, Italy
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117
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Yang Y, Yu S, Liu N, Xu H, Gong Y, Wu Y, Wang P, Su X, Liao Y, De Saeger S, Humpf HU, Wu A. Transcription Factor FOXO3a Is a Negative Regulator of Cytotoxicity of Fusarium mycotoxin in GES-1 Cells. Toxicol Sci 2019; 166:370-381. [PMID: 30169763 DOI: 10.1093/toxsci/kfy216] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Abstract
Molecular mechanism and key factors responsible for cytotoxicity against mycotoxin deoxynivalenol (DON) from Fusarium pathogens are rarely elucidated. In this study, rapid increases of ROS were first observed in human gastric epithelial (GES-1) cells under DON exposure. Mitochondrial DNA damage, impaired respiratory chain, and decreased oxygen consumption rate (OCR) values, as well as G2/M cell cycle arrest and apoptosis, were also detected. Via combinatorial approaches of a large-scale microarray of differentially expressed genes, high content and RNAi analysis, a transcription factor of Forkhead box O3 (FOXO3a) was found with crucial functionalities, regulated some apoptotic genes associated with mitochondrial toxicity and cell death after activation by nuclear translocation. Namely, knockdown of FOXO3a decreased the cytotoxicity of DON to GES-1 cells. Moreover, knockdown of the FOXO ortholog DAF16 in Caenorhabditis elegans increased the resistance to DON-induced cytotoxicity. Simultaneously, the signaling pathway of ROS/JNK/FOXO3a of DON-induced cytotoxicity was newly proposed. In total, FOXO3a via ROS/JNK/FOXO3a plays a critical role to function as negative regulator associating with DON-induced cytotoxicity, with the potential extending to other substances.
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Affiliation(s)
- Yunxia Yang
- SIBS-UGENT-SJTU Joint Laboratory of Mycotoxin Research, Institute of nutrition, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 200000, Shanghai, P.R China
| | - Song Yu
- SIBS-UGENT-SJTU Joint Laboratory of Mycotoxin Research, Institute of nutrition, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 200000, Shanghai, P.R China
| | - Na Liu
- SIBS-UGENT-SJTU Joint Laboratory of Mycotoxin Research, Institute of nutrition, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 200000, Shanghai, P.R China
| | - Haibin Xu
- China National Center for Food Safety Risk Assessmen (CFSA), 100000, Beijing, P. R. China
| | - Yunyun Gong
- China National Center for Food Safety Risk Assessmen (CFSA), 100000, Beijing, P. R. China.,School of Food Sciences and Nutrition, University of Leeds, LS2 9JT, Leeds, UK
| | - Yongning Wu
- China National Center for Food Safety Risk Assessmen (CFSA), 100000, Beijing, P. R. China
| | - Peilong Wang
- Institute of Quality Standards and Testing Technology for Agricultural Products, Chinese Academy of Agricultural Sciences, 100000, Beijing, P. R. China
| | - Xiaoou Su
- Institute of Quality Standards and Testing Technology for Agricultural Products, Chinese Academy of Agricultural Sciences, 100000, Beijing, P. R. China
| | - Yucai Liao
- College of Plant Science and Technology, Huazhong Agricultural University, 430000, Wuhan, P. R. China
| | - Sarah De Saeger
- Laboratory of Food Analysis, Department of Bioanalysis, Faculty of Pharmaceutical Sciences, Ghent University, 00329, Ghent, Belgium
| | - Hans-Ulrich Humpf
- Institute of Food Chemistry, Westfälische Wilhelms-Universität Münster, Corrensstr. 45, 48149 Münster, Germany
| | - Aibo Wu
- SIBS-UGENT-SJTU Joint Laboratory of Mycotoxin Research, Institute of nutrition, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences, University of Chinese Academy of Sciences, 200000, Shanghai, P.R China
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118
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Ho CJ, Gorski SM. Molecular Mechanisms Underlying Autophagy-Mediated Treatment Resistance in Cancer. Cancers (Basel) 2019; 11:E1775. [PMID: 31717997 PMCID: PMC6896088 DOI: 10.3390/cancers11111775] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2019] [Revised: 10/30/2019] [Accepted: 10/31/2019] [Indexed: 12/13/2022] Open
Abstract
Despite advances in diagnostic tools and therapeutic options, treatment resistance remains a challenge for many cancer patients. Recent studies have found evidence that autophagy, a cellular pathway that delivers cytoplasmic components to lysosomes for degradation and recycling, contributes to treatment resistance in different cancer types. A role for autophagy in resistance to chemotherapies and targeted therapies has been described based largely on associations with various signaling pathways, including MAPK and PI3K/AKT signaling. However, our current understanding of the molecular mechanisms underlying the role of autophagy in facilitating treatment resistance remains limited. Here we provide a comprehensive summary of the evidence linking autophagy to major signaling pathways in the context of treatment resistance and tumor progression, and then highlight recently emerged molecular mechanisms underlying autophagy and the p62/KEAP1/NRF2 and FOXO3A/PUMA axes in chemoresistance.
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Affiliation(s)
- Cally J. Ho
- Canada’s Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC V5Z 1L3, Canada;
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
| | - Sharon M. Gorski
- Canada’s Michael Smith Genome Sciences Centre, BC Cancer, Vancouver, BC V5Z 1L3, Canada;
- Department of Molecular Biology and Biochemistry, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
- Centre for Cell Biology, Development, and Disease, Simon Fraser University, Burnaby, BC V5A 1S6, Canada
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119
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miR-223 overexpression inhibits doxorubicin-induced autophagy by targeting FOXO3a and reverses chemoresistance in hepatocellular carcinoma cells. Cell Death Dis 2019; 10:843. [PMID: 31695022 PMCID: PMC6834650 DOI: 10.1038/s41419-019-2053-8] [Citation(s) in RCA: 70] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 09/29/2019] [Accepted: 10/08/2019] [Indexed: 02/07/2023]
Abstract
Doxorubicin is conventionally used in chemotherapy against hepatocellular carcinoma (HCC), but acquired resistance developed during long-term therapy limits its benefits. Autophagy, a conserved catabolic process for cellular self-protection and adaptation to the changing environment, is regarded as a potential clinical target to overcome doxorubicin resistance. In this study, the potential role of miR-223 in modulating doxorubicin-induced autophagy and sensitivity were evaluated in four transfected human HCC cell lines, and the in vivo relevance was assessed using a mouse xenograft model of HCC. We found that the well-defined miR-223 is expressed at low levels in doxorubicin treated HCC cells and that miR-223 overexpression inhibits the doxorubicin-induced autophagy that contributes to chemoresistance. Blockade of autophagic flux by chloroquine resulted in the failure of miR-223 inhibitor to suppress doxorubicin sensitivity of HCC cells. We further identified FOXO3a as a direct downstream target of miR-223 and primary mediator of the regulatory effect of miR-223 on doxorubicin-induced autophagy and chemoresistance in HCC cells. Finally, we confirmed the enhancement of doxorubicin sensitivity by agomiR-223 in xenograft models of HCC. These findings establish a novel miRNA-based approach for autophagy interference to reverse doxorubicin resistance in future chemotherapy regimens against human HCC.
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120
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Functions and Implications of Autophagy in Colon Cancer. Cells 2019; 8:cells8111349. [PMID: 31671556 PMCID: PMC6912527 DOI: 10.3390/cells8111349] [Citation(s) in RCA: 40] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 10/24/2019] [Accepted: 10/28/2019] [Indexed: 02/08/2023] Open
Abstract
Autophagy is an essential function to breakdown cellular proteins and organelles to recycle for new nutrient building blocks. In colorectal cancer, the importance of autophagy is becoming widely recognized as it demonstrates both pro- and anti-tumorigenic functions. In colon cancer, cell autonomous and non-autonomous roles for autophagy are essential in growth and progression. However, the mechanisms downstream of autophagy (to reduce or enhance tumor growth) are not well known. Additionally, the signals that activate and coordinate autophagy for tumor cell growth and survival are not clear. Here, we highlight the context- and cargo-dependent role of autophagy in proliferation, cell death, and cargo breakdown.
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121
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Linder B, Kögel D. Autophagy in Cancer Cell Death. BIOLOGY 2019; 8:biology8040082. [PMID: 31671879 PMCID: PMC6956186 DOI: 10.3390/biology8040082] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/02/2019] [Revised: 10/18/2019] [Accepted: 10/28/2019] [Indexed: 12/13/2022]
Abstract
Autophagy has important functions in maintaining energy metabolism under conditions of starvation and to alleviate stress by removal of damaged and potentially harmful cellular components. Therefore, autophagy represents a pro-survival stress response in the majority of cases. However, the role of autophagy in cell survival and cell death decisions is highly dependent on its extent, duration, and on the respective cellular context. An alternative pro-death function of autophagy has been consistently observed in different settings, in particular, in developmental cell death of lower organisms and in drug-induced cancer cell death. This cell death is referred to as autophagic cell death (ACD) or autophagy-dependent cell death (ADCD), a type of cellular demise that may act as a backup cell death program in apoptosis-deficient tumors. This pro-death function of autophagy may be exerted either via non-selective bulk autophagy or excessive (lethal) removal of mitochondria via selective mitophagy, opening new avenues for the therapeutic exploitation of autophagy/mitophagy in cancer treatment.
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Affiliation(s)
- Benedikt Linder
- Experimental Neurosurgery, Department of Neurosurgery, Neuroscience Center, Goethe University Hospital, 60528 Frankfurt am Main, Germany.
| | - Donat Kögel
- Experimental Neurosurgery, Department of Neurosurgery, Neuroscience Center, Goethe University Hospital, 60528 Frankfurt am Main, Germany.
- German Cancer Consortium (DKTK), Partner Site Frankfurt, 60590 Frankfurt am Main, Germany.
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122
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Shang J, Chen WM, Liu S, Wang ZH, Wei TN, Chen ZZ, Wu WB. CircPAN3 contributes to drug resistance in acute myeloid leukemia through regulation of autophagy. Leuk Res 2019; 85:106198. [DOI: 10.1016/j.leukres.2019.106198] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2018] [Revised: 07/07/2019] [Accepted: 08/01/2019] [Indexed: 12/24/2022]
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123
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Xin X, Du X, Xiao Q, Azevedo HS, He W, Yin L. Drug Nanorod-Mediated Intracellular Delivery of microRNA-101 for Self-sensitization via Autophagy Inhibition. NANO-MICRO LETTERS 2019; 11:82. [PMID: 34138035 PMCID: PMC7770860 DOI: 10.1007/s40820-019-0310-0] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/10/2019] [Accepted: 08/30/2019] [Indexed: 05/20/2023]
Abstract
Autophagy is closely related to the drug resistance and metastasis in cancer therapy. Nanoparticle-mediated co-delivery of combinatorial therapy with small-molecular drugs and nucleic acids is promising to address drug resistance. Here, a drug-delivering-drug (DDD) platform consisting of anti-tumor-drug nanorods as a vehicle for cytosol delivery of nucleic acid (miR-101) with potent autophagic-inhibition activity is reported for combinatorial therapy. The developed 180-nm nanoplatform, with total drug loading of up to 66%, delivers miR-101 to cancer cells, with threefold increase in intracellular level compared to conventional gene carriers and inhibits the autophagy significantly, along with above twofold reduction in LC3II mRNA and approximately fivefold increase in p62 mRNA over the control demonstrated in the results in vivo. And in turn, the delivery of miR-101 potentiates the drug's ability to kill cancer cells, with a threefold increase in apoptosis over that of chemotherapy alone. The anti-tumor study in vivo indicates the combined therapy that enables a reduction of 80% in tumor volume and > twofold increase in apoptosis than of the single-drug strategy. In summary, via the carrier-free strategy of DDD, this work provides a delivery platform that can be easily customized to overcome drug resistance and facilitates the delivery of combined therapy of small-molecular drugs and nucleic acids.
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Affiliation(s)
- Xiaofei Xin
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Xiaoqing Du
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Qingqing Xiao
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Helena S Azevedo
- School of Engineering and Materials Science, Institute of Bioengineering, Queen Mary, University of London, London, E1 4NS, UK
| | - Wei He
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, People's Republic of China.
| | - Lifang Yin
- Department of Pharmaceutics, School of Pharmacy, China Pharmaceutical University, Nanjing, 210009, People's Republic of China.
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124
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Dent P, Booth L, Poklepovic A, Hancock JF. Signaling alterations caused by drugs and autophagy. Cell Signal 2019; 64:109416. [PMID: 31520735 DOI: 10.1016/j.cellsig.2019.109416] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Revised: 09/10/2019] [Accepted: 09/10/2019] [Indexed: 12/12/2022]
Abstract
Autophagy is an evolutionary conserved process that recycles cellular materials in times of nutrient restriction to maintain viability. In cancer therapeutics, the role of autophagy in response to multi-kinase inhibitors, alone or when combined with histone deacetylase (HDAC) inhibitors acts, generally, to facilitate the killing of tumor cells. Furthermore, the formation of autophagosomes and subsequent degradation of their contents can reduce the expression of HDAC proteins themselves as well as of other signaling regulatory molecules such as protein chaperones and mutated RAS proteins. Reduced levels of HDAC6 causes the acetylation and inactivation of heat shock protein 90, and, together with reduced expression of the chaperones HSP70 and GRP78, generates a strong endoplasmic reticulum (ER) stress response. Prolonged intense ER stress signaling causes tumor cell death. Reduced expression of HDACs 1, 2 and 3 causes the levels of programed death ligand 1 (PD-L1) to decline and the expression of Class I MHCA to increase which correlates with elevated immunogenicity of the tumor cells in vivo. This review will specifically focus on the downstream implications that result from autophagic-degradation of HDACs, RAS and protein chaperones.
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Affiliation(s)
- Paul Dent
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA 23298, USA.
| | - Laurence Booth
- Department of Biochemistry and Molecular Biology, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - Andrew Poklepovic
- Department of Biochemistry and Medicine, Virginia Commonwealth University, Richmond, VA 23298, USA
| | - John F Hancock
- Department of Integrative Biology and Pharmacology, University of Texas Health Science Center, Houston, TX 77030, USA
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125
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Li Z, Zhu H, Liu C, Wang Y, Wang D, Liu H, Cao W, Hu Y, Lin Q, Tong C, Lu M, Sachinidis A, Li L, Peng L. GSK-3β inhibition protects the rat heart from the lipopolysaccharide-induced inflammation injury via suppressing FOXO3A activity. J Cell Mol Med 2019; 23:7796-7809. [PMID: 31503410 PMCID: PMC6815822 DOI: 10.1111/jcmm.14656] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 08/11/2019] [Accepted: 08/15/2019] [Indexed: 12/25/2022] Open
Abstract
Sepsis‐induced cardiac dysfunction represents a main cause of death in intensive care units. Previous studies have indicated that GSK‐3β is involved in the modulation of sepsis. However, the signalling details of GSK‐3β regulation in endotoxin lipopolysaccharide (LPS)‐induced septic myocardial dysfunction are still unclear. Here, based on the rat septic myocardial injury model, we found that LPS could induce GSK‐3β phosphorylation at its active site (Y216) and up‐regulate FOXO3A level in primary cardiomyocytes. The FOXO3A expression was significantly reduced by GSK‐3β inhibitors and further reversed through β‐catenin knock‐down. This pharmacological inhibition of GSK‐3β attenuated the LPS‐induced cell injury via mediating β‐catenin signalling, which could be abolished by FOXO3A activation. In vivo, GSK‐3β suppression consistently improved cardiac function and relieved heart injury induced by LPS. In addition, the increase in inflammatory cytokines in LPS‐induced model was also blocked by inhibition of GSK‐3β, which curbed both ERK and NF‐κB pathways, and suppressed cardiomyocyte apoptosis via activating the AMP‐activated protein kinase (AMPK). Our results demonstrate that GSK‐3β inhibition attenuates myocardial injury induced by endotoxin that mediates the activation of FOXO3A, which suggests a potential target for the therapy of septic cardiac dysfunction.
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Affiliation(s)
- Zhigang Li
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Huifang Zhu
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chang Liu
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yumei Wang
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Duo Wang
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Huan Liu
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wenze Cao
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yi Hu
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qin Lin
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Chang Tong
- Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Min Lu
- Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Agapios Sachinidis
- Institute of Neurophysiology and Center for Molecular Medicine, Cologne (CMMC), University of Cologne, Cologne, Germany
| | - Li Li
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
| | - Luying Peng
- Key Laboratory of Arrhythmias, Ministry of Education, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China.,Research Center for Translational Medicine, Shanghai East Hospital, Tongji University School of Medicine, Shanghai, China
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126
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Cheng Z. The FoxO-Autophagy Axis in Health and Disease. Trends Endocrinol Metab 2019; 30:658-671. [PMID: 31443842 DOI: 10.1016/j.tem.2019.07.009] [Citation(s) in RCA: 136] [Impact Index Per Article: 27.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2019] [Revised: 07/02/2019] [Accepted: 07/08/2019] [Indexed: 12/21/2022]
Abstract
Autophagy controls cellular remodeling and quality control. Dysregulated autophagy has been implicated in several human diseases including obesity, diabetes, cardiovascular disease, neurodegenerative diseases, and cancer. Current evidence has revealed that FoxO (forkhead box class O) transcription factors have a multifaceted role in autophagy regulation and dysregulation. Nuclear FoxOs transactivate genes that control the formation of autophagosomes and their fusion with lysosomes. Independently of transactivation, cytosolic FoxO proteins induce autophagy by directly interacting with autophagy proteins. Autophagy is also controlled by FoxOs through epigenetic mechanisms. Moreover, FoxO proteins can be degraded directly or indirectly by autophagy. Cutting-edge evidence is reviewed that the FoxO-autophagy axis plays a crucial role in health and disease.
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Affiliation(s)
- Zhiyong Cheng
- Food Science and Human Nutrition Department, The University of Florida, Gainesville, FL 32611, USA.
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127
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Mao M, Chen Y, Jia Y, Yang J, Wei Q, Li Z, Chen L, Chen C, Wang L. PLCA8 suppresses breast cancer apoptosis by activating the PI3k/AKT/NF-κB pathway. J Cell Mol Med 2019; 23:6930-6941. [PMID: 31448883 PMCID: PMC6787500 DOI: 10.1111/jcmm.14578] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 06/12/2019] [Accepted: 07/10/2019] [Indexed: 12/12/2022] Open
Abstract
The cysteine‐rich lysosomal protein placenta‐specific 8 (PLAC8), also called onzin, has been shown to be involved in many types of cancers, and its role is highly dependent on cellular and physiological contexts. However, the precise function of PLAC8 in breast cancer (BC) progression remains unclear. In this study, we investigated both the clinical significance and biological functions of PLAC8 in BC progression. First, high PLAC8 expression was observed in primary BC tissues compared with adjacent normal tissues through immunohistochemistry analysis. The results of in vitro and in vivo assays further confirmed that PLAC8 overexpression promotes cell proliferation and suppress BC cell apoptosis, whereas PLAC8 silencing has the opposite effect. In addition, the forced expression of PLAC8 greatly induces cell migration, partially by affecting the EMT‐related genes, including down‐regulating E‐cadherin expression and facilitating vimentin expression. Further mechanistic analysis confirmed that PLAC8 contributes to cell proliferation and suppresses cell apoptosis in BC by activating the PI3K/AKT/NF‐κB pathway. The results of our study provide new insights into an oncogenic role of PLAC8 and reveal a novel PLAC8/ PI3K/AKT/NF‐κB pathway as a potential therapeutic target for BC.
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Affiliation(s)
- Misha Mao
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Yongxia Chen
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Yunlu Jia
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Jingjing Yang
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Qun Wei
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Zhaoqing Li
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Lini Chen
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Cong Chen
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
| | - Linbo Wang
- Department of Surgical Oncology, Sir Run Run Shaw Hospital, Zhejiang University, Hangzhou, China
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128
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Das CK, Banerjee I, Mandal M. Pro-survival autophagy: An emerging candidate of tumor progression through maintaining hallmarks of cancer. Semin Cancer Biol 2019; 66:59-74. [PMID: 31430557 DOI: 10.1016/j.semcancer.2019.08.020] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Revised: 07/30/2019] [Accepted: 08/16/2019] [Indexed: 12/13/2022]
Abstract
Autophagy is an evolutionary conserved catabolic process that regulates the cellular homeostasis by targeting damaged cellular contents and organelles for lysosomal degradation and sustains genomic integrity, cellular metabolism, and cell survival during diverse stress and adverse conditions. Recently, the role of autophagy is extremely debated in the regulation of cancer initiation and progression. Although autophagy has a dichotomous role in the regulation of cancer, growing numbers of studies largely indicate the pro-survival role of autophagy in cancer progression and metastasis. In this review, we discuss the detailed mechanisms of autophagy, the role of pro-survival autophagy that positively drives several classical as well as emerging hallmarks of cancer for tumorigenic progression, and also we address various autophagy inhibitors that could be harnessed against pro-survival autophagy for effective cancer therapeutics. Finally, we highlight some outstanding problems that need to be deciphered extensively in the future to unravel the role of autophagy in tumor progression.
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Affiliation(s)
- Chandan Kanta Das
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India
| | - Indranil Banerjee
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India
| | - Mahitosh Mandal
- School of Medical Science and Technology, Indian Institute of Technology Kharagpur, Kharagpur, West Bengal, India.
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129
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Colorectal cancer cells respond differentially to autophagy inhibition in vivo. Sci Rep 2019; 9:11316. [PMID: 31383875 PMCID: PMC6683171 DOI: 10.1038/s41598-019-47659-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2019] [Accepted: 07/19/2019] [Indexed: 12/19/2022] Open
Abstract
Autophagy has both tumor-promoting and -suppressing effects in cancer, including colorectal cancer (CRC), with transformed cells often exhibiting high autophagic flux. In established tumors, autophagy inhibition can lead to opposite responses resulting in either tumor cell death or hyperproliferation. The functional mechanisms underlying these differences are poorly understood. The present study aimed to investigate the relationship between the autophagic capacities of CRC cells and their sensitivities to autophagy inhibition. All studied CRC cell lines showed high basal autophagic flux. However, only HCT116 and Caco-2/15 cells displayed regulated autophagic flux upon starvation. Knockdown of ATG5 (which disrupts autophagosome elongation) or RAB21 (which decreases autophagosome/lysosome fusion) had little effect on CRC cell proliferation in vitro. Nonetheless, inhibition of autophagy in vivo had a substantial cell line-dependent impact on tumor growth, with some cells displaying decreased (HCT116 and Caco-2/15) or increased (SW480 and LoVo) proliferation. RNA sequencing and Western blot analyses in hyperproliferative SW480 tumors revealed that the mTORC2 and AKT pathways were hyperactivated following autophagy impairment. Inhibition of either mTOR or AKT activities rescued the observed hyperproliferation in autophagy-inhibited SW480 and reduced tumor growth. These results highlight that autophagy inhibition can lead, in specific cellular contexts, to compensatory mechanisms promoting tumor growth.
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130
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Cancer Cells Upregulate NRF2 Signaling to Adapt to Autophagy Inhibition. Dev Cell 2019; 50:690-703.e6. [PMID: 31378590 DOI: 10.1016/j.devcel.2019.07.010] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Revised: 04/26/2019] [Accepted: 07/03/2019] [Indexed: 12/24/2022]
Abstract
While autophagy is thought to be an essential process in some cancer cells, it is unknown if or how such cancer cells can circumvent autophagy inhibition. To address this, we developed a CRISPR/Cas9 assay with dynamic live-cell imaging to measure acute effects of knockout (KO) of autophagy genes compared to known essential and non-essential genes. In some cancer cells, autophagy is as essential for cancer cell growth as mRNA transcription or translation or DNA replication. However, even these highly autophagy-dependent cancer cells evolve to circumvent loss of autophagy by upregulating NRF2, which is necessary and sufficient for autophagy-dependent cells to circumvent ATG7 KO and maintain protein homeostasis. Importantly, however, this adaptation increases susceptibly to proteasome inhibitors. These studies identify a common mechanism of acquired resistance to autophagy inhibition and show that selection to avoid tumor cell dependency on autophagy creates new, potentially actionable cancer cell susceptibilities.
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131
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Zhou B, Lu Q, Liu J, Fan L, Wang Y, Wei W, Wang H, Sun G. Melatonin Increases the Sensitivity of Hepatocellular Carcinoma to Sorafenib through the PERK-ATF4-Beclin1 Pathway. Int J Biol Sci 2019; 15:1905-1920. [PMID: 31523192 PMCID: PMC6743299 DOI: 10.7150/ijbs.32550] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Accepted: 06/17/2019] [Indexed: 12/21/2022] Open
Abstract
The mechanisms of resistance to the targeted drug sorafenib in the treatment of hepatocellular carcinoma (HCC) are poorly understood. The purpose of this study was to investigate the mechanism of sorafenib resistance and to elucidate the role of melatonin in overcoming sorafenib resistance. We first observed that sorafenib induced endoplasmic reticulum (ER) stress and activated autophagy in HCC, and the inhibition of ER stress and autophagy by specific inhibitors (PBA, TUDC and 3-MA) increased sorafenib-induced apoptosis, indicating that cells resist apoptosis by inducing ER stress and autophagy in the presence of sorafenib. Furthermore, specimens from patients with HCC revealed a close relationship between ER stress and autophagy, as demonstrated by the high correlation between expression of the autophagy-associated protein Beclin1 and expression of unfolded protein response (UPR) pathway proteins, especially PKR-like ER stress kinase (PERK); moreover, patients with combined expression of PERK and Beclin1 had more advanced disease (higher clinical stage) and a shorter overall survival time. ER stress inhibitors significantly blocked sorafenib-induced autophagy, selective knockdown of PERK and activating transcription factor 4 (ATF4) expression reduced sorafenib-induced autophagy activity compared with knockdown of the other two UPR pathways, and silencing ATF4 inhibited the expression of Beclin1. These results suggest that autophagy is downstream of ER stress and that the PERK-ATF4-Beclin1 pathway plays a role in ER stress-related autophagy. Interestingly, a low concentration of melatonin increased the sensitivity of HCC to sorafenib by inhibiting autophagy through the PERK-ATF4-Beclin1 pathway. Taken together, our findings suggest that cotreatment with sorafenib and melatonin is a potential therapy for HCC. Furthermore, ER stress-related autophagy plays key roles in apoptosis resistance. Therefore, targeting the PERK-ATF4-Beclin1 pathway may prove instrumental in HCC therapy.
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Affiliation(s)
- Bei Zhou
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, China
| | - Qianqian Lu
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, China
| | - Jiatao Liu
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, China.,Department of Pharmacy, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, China
| | - Lulu Fan
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, China
| | - Yu Wang
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, China
| | - Wei Wei
- Institute of Clinical Pharmacology, Anhui Medical University, Hefei 230032, Anhui, China
| | - Hua Wang
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, China.,Institute for Liver Diseases of Anhui Medical University, Hefei 230032, Anhui, China
| | - Guoping Sun
- Department of Oncology, the First Affiliated Hospital of Anhui Medical University, Hefei 230022, Anhui, China
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132
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Anderson CM, Macleod KF. Autophagy and cancer cell metabolism. INTERNATIONAL REVIEW OF CELL AND MOLECULAR BIOLOGY 2019; 347:145-190. [PMID: 31451213 PMCID: PMC8211395 DOI: 10.1016/bs.ircmb.2019.06.002] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Autophagy is an ancient catabolic process used by cells to clear excess or dysfunctional organelles and large subcellular structures and thus performs an important housekeeping role for the cell. Autophagy is acutely sensitive to nutrient availability and is upregulated at a transcriptional and posttranslational level in response to nutrient deprivation. This serves to promote turnover of cellular content and recycling of nutrients for continued growth and survival. While important for most normal tissues, tumor cells appear to be particularly dependent on autophagy for survival under ischemic or therapeutic stress, and in response to loss of matrix attachment; autophagy is upregulated markedly in cancers as they progress to malignancy. Ras-driven tumors appear to be particularly dependent on autophagy and thus inhibition of autophagy is being pursued as a productive clinical approach for such cancers. However, this enthusiasm needs to be offset against possible negative effects of autophagy inhibition on normal tissue function and on limiting antitumor immune responses. In addressing all of these topics, we focus in on understanding how autophagy is induced by nutrient stress, its role in recycling metabolites for growing tumors, how selective forms of autophagy, such as mitophagy and ribophagy contribute specifically to tumorigenesis, how autophagy in the tumor microenvironment and throughout the animal affects access of the tumor to nutrients, and finally how different oncogenic pathways may determine which tumors respond to autophagy inhibition and which ones will not.
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Affiliation(s)
- Cara M Anderson
- The Ben May Department for Cancer Research, The Gordon Center for Integrative Sciences, The University of Chicago, Chicago, IL, United States; The Committee on Molecular Metabolism & Nutrition, The University of Chicago, Chicago, IL, United States
| | - Kay F Macleod
- The Ben May Department for Cancer Research, The Gordon Center for Integrative Sciences, The University of Chicago, Chicago, IL, United States; The Committee on Molecular Metabolism & Nutrition, The University of Chicago, Chicago, IL, United States; The Committee on Cancer Biology, University of Chicago, Chicago, IL, United States.
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133
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LZ-101, a novel derivative of danofloxacin, induces mitochondrial apoptosis by stabilizing FOXO3a via blocking autophagy flux in NSCLC cells. Cell Death Dis 2019; 10:484. [PMID: 31217472 PMCID: PMC6584698 DOI: 10.1038/s41419-019-1714-y] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 05/06/2019] [Accepted: 05/30/2019] [Indexed: 12/25/2022]
Abstract
Non-small-cell lung carcinoma (NSCLC) continues to be a vital disease worldwide for its high incidence and consequent mortality rate. In this study, we investigated the anti-cancer effect of LZ-101, a new derivative of danofloxacin, against non-small-cell lung cancer and the underlying mechanisms. In vitro, LZ-101 inhibited the viability of human non-small cell lung cancer cell lines. We demonstrated that LZ-101 induced mitochondrial-mediated apoptosis by increasing Bax/Bcl-2 ratio, loss of mitochondrial membrane potential (ΔΨm), release of cytochrome c (Cyt c) and apoptosis-inducing factor (AIF) in A549 cells. Further research illuminated that LZ-101 induced apoptosis was related to the activation of FOXO3a/Bim pathway. Moreover, we found that LZ-101 increased the stability of FOXO3a by blocking autophagy-dependent FOXO3a degradation. However, inhibition of autophagosome formation abolished FOXO3a stabilization and apoptosis induced by LZ-101. In vivo, LZ-101 exerted a remarkable anti-tumor activity with high safety in xenograft model inoculated A549 tumor through the same mechanism as in our in vitro study. In conclusion, our findings indicated that LZ-101 induces mitochondrial apoptosis and stabilizes FOXO3a by blocking autophagy flux.
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134
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Huang J, Gao L, Li B, Liu C, Hong S, Min J, Hong L. Knockdown of Hypoxia-Inducible Factor 1α (HIF-1α) Promotes Autophagy and Inhibits Phosphatidylinositol 3-Kinase (PI3K)/AKT/Mammalian Target of Rapamycin (mTOR) Signaling Pathway in Ovarian Cancer Cells. Med Sci Monit 2019; 25:4250-4263. [PMID: 31175269 PMCID: PMC6573092 DOI: 10.12659/msm.915730] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Background Ovarian cancer has the highest mortality rate among all female genital tumors because of its insidious onset and drug resistance. Hypoxia-inducible factor 1α (HIF-1α), one of the best-studied oncogenes, plays an important part in tumor adaptation to microenvironmental hypoxia and was found to be overexpressed in several malignancies, including ovarian cancer. Previous studies found that the effect of HIF-1α on cancers may be correlated with autophagy and some signaling pathways, such as PI3K/AKT/mTOR, in several tumors. However, the function and potential mechanism have not been clearly defined. Material/Methods The expression of HIF-1α in ovarian cancer tissues were detected by immunohistochemistry. HIF-1α was knocked down by siRNA transfection. Cell viability was examined by CCK8 and colony formation assay. Apoptosis and autophagy were detected with flow cytometry, transmission electron microscopy, and laser scanning confocal microscopy, respectively. The proteins related to autophagy and PI3K/AKT/mTOR were detected through Western blot analysis. Results HIF-1α was expressed at higher levels in epithelial or metastatic ovarian cancer tissue than in normal fallopian tube tissue. When HIF-1α was knocked down by siRNA in A2780 and SKOV3 cells, the viability of ovarian cancer cells was weakened, but the apoptosis and autophagy were strengthened. Accordingly, autophagosome formation increased and the expression of autophagy-related proteins LC3 and P62 increased in HIF-1α knockdown cells. The PI3K/Akt/mTOR signaling pathway was also found to be inactivated in HIF-1α knockdown cells. Conclusions These findings show that knockdown of HIF-1α promoted autophagy and inhibited the PI3K/AKT/mTOR signaling pathway in ovarian cancer cells.
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Affiliation(s)
- Jinling Huang
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Likun Gao
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Bingshu Li
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Cheng Liu
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Shasha Hong
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Jie Min
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
| | - Li Hong
- Department of Gynecology and Obstetrics, Renmin Hospital of Wuhan University, Wuhan, Hubei, China (mainland)
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135
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Identification of Kinases Responsible for p53-Dependent Autophagy. iScience 2019; 15:109-118. [PMID: 31048145 PMCID: PMC6495467 DOI: 10.1016/j.isci.2019.04.023] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2018] [Revised: 01/11/2019] [Accepted: 04/17/2019] [Indexed: 01/03/2023] Open
Abstract
In cancer, autophagy is upregulated to promote cell survival and tumor growth during times of nutrient stress and can confer resistance to drug treatments. Several major signaling networks control autophagy induction, including the p53 tumor suppressor pathway. In response to DNA damage and other cellular stresses, p53 is stabilized and activated, while HDM2 binds to and ubiquitinates p53 for proteasome degradation. Thus blocking the HDM2-p53 interaction is a promising therapeutic strategy in cancer; however, the potential survival advantage conferred by autophagy induction may limit therapeutic efficacy. In this study, we leveraged an HDM2 inhibitor to identify kinases required for p53-dependent autophagy. Interestingly, we discovered that p53-dependent autophagy requires several kinases, including the myotonic dystrophy protein kinase-like alpha (MRCKα). MRCKα is a CDC42 effector reported to activate actin-myosin cytoskeletal reorganization. Overall, this study provides evidence linking MRCKα to autophagy and reveals additional insights into the role of kinases in p53-dependent autophagy. HDM2 inhibitors stabilize and activate p53 leading to robust autophagy induction RNAi screen uncovers kinases involved in p53-dependent autophagy ULK1 and the actin cytoskeleton kinase MRCKα mediate p53-induced autophagy
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136
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Slobodnyuk K, Radic N, Ivanova S, Llado A, Trempolec N, Zorzano A, Nebreda AR. Autophagy-induced senescence is regulated by p38α signaling. Cell Death Dis 2019; 10:376. [PMID: 31092814 PMCID: PMC6520338 DOI: 10.1038/s41419-019-1607-0] [Citation(s) in RCA: 61] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2018] [Revised: 04/14/2019] [Accepted: 04/23/2019] [Indexed: 12/30/2022]
Abstract
Apoptosis and senescence are two mutually exclusive cell fate programs that can be activated by stress. The factors that instruct cells to enter into senescence or apoptosis are not fully understood, but both programs can be regulated by the stress kinase p38α. Using an inducible system that specifically activates this pathway, we show that sustained p38α activation suffices to trigger massive autophagosome formation and to enhance the basal autophagic flux. This requires the concurrent effect of increased mitochondrial reactive oxygen species production and the phosphorylation of the ULK1 kinase on Ser-555 by p38α. Moreover, we demonstrate that macroautophagy induction by p38α signaling determines that cancer cells preferentially enter senescence instead of undergoing apoptosis. In agreement with these results, we present evidence that the induction of autophagy by p38α protects cancer cells from chemotherapy-induced apoptosis by promoting senescence. Our results identify a new mechanism of p38α-regulated basal autophagy that controls the fate of cancer cells in response to stress.
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Affiliation(s)
- Konstantin Slobodnyuk
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, 08028, Barcelona, Spain
| | - Nevenka Radic
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, 08028, Barcelona, Spain
| | - Saška Ivanova
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, 08028, Barcelona, Spain.,Department of Biochemistry and Molecular Biomedicine, University of Barcelona, Faculty of Biology, 08028, Barcelona, Spain.,CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Barcelona, Spain
| | - Anna Llado
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, 08028, Barcelona, Spain
| | - Natalia Trempolec
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, 08028, Barcelona, Spain
| | - Antonio Zorzano
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, 08028, Barcelona, Spain.,Department of Biochemistry and Molecular Biomedicine, University of Barcelona, Faculty of Biology, 08028, Barcelona, Spain.,CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Instituto de Salud Carlos III, Barcelona, Spain
| | - Angel R Nebreda
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, 08028, Barcelona, Spain. .,ICREA, Pg. Lluís Companys 23, 08010, Barcelona, Spain.
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137
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Liu X, Zhao P, Wang X, Wang L, Zhu Y, Gao W. Triptolide Induces Glioma Cell Autophagy and Apoptosis via Upregulating the ROS/JNK and Downregulating the Akt/mTOR Signaling Pathways. Front Oncol 2019; 9:387. [PMID: 31157167 PMCID: PMC6528693 DOI: 10.3389/fonc.2019.00387] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Accepted: 04/25/2019] [Indexed: 01/17/2023] Open
Abstract
Apoptosis and autophagy are the two prominent forms of developmental cell death, and researches have shown that crosstalk exists between these two processes. A prior study demonstrated that triptolide inhibited the proliferation of malignant glioma cells. However, whether apoptosis and autophagy participate in the inhibitory effect of triptolide in glioma cells has not been clarified. In the present study, we demonstrated that triptolide potently inhibited the growth of glioma cells by inducing cell cycle arrest at the G2/M phase. Additionally, the treatment with triptolide induced apoptosis and autophagy in various glioma cell lines. Triptolide-induced autophagy may have tumor-supporting effects. Autophagy and apoptosis could cross-inhibit each other in glioma cells treated with triptolide. Moreover, we found that triptolide induced ROS production and JNK activation and inhibited the activity of Akt and mTOR. Finally, we demonstrated that triptolide suppressed tumor growth in an orthotopic xenograft glioma model. Collectively, these data indicated that triptolide induced G2/M phase arrest, apoptosis, and autophagy via activating the ROS/JNK and blocking the Akt/mTOR signaling pathways in glioma cells. Triptolide may be a potential anti-tumor drug targeting gliomas.
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Affiliation(s)
- Xihong Liu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Peiyuan Zhao
- Basic Discipline of Integrated Chinese and Western Medicine, Henan University of Chinese Medicine, Henan, China
| | - Xiujuan Wang
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Lei Wang
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Yingjun Zhu
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China
| | - Wei Gao
- School of Traditional Chinese Medicine, Capital Medical University, Beijing, China.,School of Pharmaceutical Sciences, Capital Medical University, Beijing, China.,Advanced Innovation Center for Human Brain Protection, Capital Medical University, Beijing, China
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138
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Duan L, Perez RE, Lai X, Chen L, Maki CG. The histone demethylase JMJD2B is critical for p53-mediated autophagy and survival in Nutlin-treated cancer cells. J Biol Chem 2019; 294:9186-9197. [PMID: 31036564 DOI: 10.1074/jbc.ra118.007122] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 04/24/2019] [Indexed: 01/27/2023] Open
Abstract
Autophagy promotes cancer cell survival in response to p53 activation by the anticancer agent Nutlin-3a (Nutlin). We reported previously that Nutlin kills MDM2-amplified cancer cells and that this killing is associated with an inhibition of glucose metabolism, reduced α-ketoglutarate (α-KG) levels, and reduced autophagy. In the current report, using SJSA1, U2OS, A549, and MHM cells, we found that Nutlin alters histone methylation in an MDM2 proto-oncogene-dependent manner and that this, in turn, regulates autophagy-related gene (ATG) expression and cell death. In MDM2-amplified cells, Nutlin increased histone (H) 3 lysine (K) 9 and K36 trimethylation (me3) coincident with reduced autophagy and increased apoptosis. Blocking histone methylation restored autophagy and rescued these cells from Nutlin-induced killing. In MDM2-nonamplified cells, H3K9me3 and H3K36me3 levels were either reduced or not changed by the Nutlin treatment, and this coincided with increased autophagy and cell survival. Blocking histone demethylation reduced autophagy and sensitized these cells to Nutlin-induced killing. Further experiments suggested that MDM2 amplification increases histone methylation in Nutlin-treated cells by causing depletion of the histone demethylase Jumonji domain-containing protein 2B (JMJD2B). Finally, JMJD2B knockdown or inhibition increased H3K9/K36me3 levels, decreased ATG gene expression and autophagy, and sensitized MDM2-nonamplified cells to apoptosis. Together, these results support a model in which MDM2- and JMJD2B-regulated histone methylation levels modulate ATG gene expression, autophagy, and cell fate in response to the MDM2 antagonist Nutlin-3a.
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Affiliation(s)
- Lei Duan
- From the Department of Cell & Molecular Medicine, Rush University Medical Center, Chicago, Illinois 60612
| | - Ricardo E Perez
- From the Department of Cell & Molecular Medicine, Rush University Medical Center, Chicago, Illinois 60612
| | - Xin Lai
- Sichuan Cancer Center, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China, and
| | - Ling Chen
- Department of Laboratory Medicine, Taihe Hospital, Hubei University of Medicine, Shiyan, Hubei, China 442000
| | - Carl G Maki
- From the Department of Cell & Molecular Medicine, Rush University Medical Center, Chicago, Illinois 60612,
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139
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Ashrafizadeh M, Mohammadinejad R, Tavakol S, Ahmadi Z, Roomiani S, Katebi M. Autophagy, anoikis, ferroptosis, necroptosis, and endoplasmic reticulum stress: Potential applications in melanoma therapy. J Cell Physiol 2019; 234:19471-19479. [PMID: 31032940 DOI: 10.1002/jcp.28740] [Citation(s) in RCA: 82] [Impact Index Per Article: 16.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2019] [Revised: 04/03/2019] [Accepted: 04/11/2019] [Indexed: 12/17/2022]
Abstract
Melanoma as the most major skin malignancy has attracted much attention, so far. Although a successful therapeutic strategy requires an accurate understanding of the precise mechanisms for the initiation and progression of the melanoma. Several types of cell death mechanisms have recently been identified along with conventional cell death mechanisms such as apoptosis and necrosis. Among those mechanisms, necroptosis, anoikis, ferroptosis, and autophagy may be considered to have remarkable modulatory impacts on melanoma. In the present review, we explain the mechanisms of cell death signaling pathways related to autophagy, ferroptosis, anoikis, necroptosis, and reticulum endoplasmic stress in cells and describe how those mechanisms transduce signals in melanoma cells. Meanwhile, we describe how we can modulate those mechanisms to eliminate melanoma.
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Affiliation(s)
- Milad Ashrafizadeh
- Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Reza Mohammadinejad
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Shima Tavakol
- Cellular and Molecular Research Center, Iran University of Medical Sciences, Tehran, Iran
| | - Zahra Ahmadi
- Department of Basic Science, Faculty of Veterinary Medicine, Islamic Azad Branch, University of Shushtar, Khuzestan, Iran
| | - Sahar Roomiani
- Department of Basic Science, Faculty of Veterinary Medicine, Islamic Azad Branch, University of Shushtar, Khuzestan, Iran
| | - Majid Katebi
- Department of Anatomy, Hormozgan University of Medical Sciences, Bandar Abbas, Hormozgan, Iran
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140
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Watch What You (Self-) Eat: Autophagic Mechanisms that Modulate Metabolism. Cell Metab 2019; 29:803-826. [PMID: 30943392 PMCID: PMC6450419 DOI: 10.1016/j.cmet.2019.03.003] [Citation(s) in RCA: 188] [Impact Index Per Article: 37.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/15/2019] [Revised: 02/07/2019] [Accepted: 03/04/2019] [Indexed: 02/07/2023]
Abstract
Autophagy is an evolutionarily conserved lysosome- or vacuole-dependent catabolic pathway in eukaryotes. Autophagy functions basally for cellular quality control and is induced to act as an alternative source of basic metabolites during nutrient deprivation. These functions of autophagy are intimately connected to the regulation of metabolism, and the metabolic status of the cell in turn controls the nature and extent of autophagic induction. Here, we highlight the co-regulation of autophagy and metabolism with a special focus on selective autophagy that, along with bulk autophagy, plays a central role in regulating and rewiring metabolic circuits. We outline the metabolic signals that activate these pathways, the mechanisms involved, and the downstream effects and implications while recognizing yet unanswered questions. We also discuss the role of autophagy in the development and maintenance of adipose tissue, an emerging player in systemic metabolic homeostasis, and describe what is currently known about the complex relationship between autophagy and cancer.
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141
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Zhang H, Zhang N, Liu Y, Su P, Liang Y, Li Y, Wang X, Chen T, Song X, Sang Y, Duan Y, Zhang J, Wang L, Chen B, Zhao W, Guo H, Liu Z, Hu G, Yang Q. Epigenetic Regulation of NAMPT by NAMPT-AS
Drives Metastatic Progression in Triple-Negative Breast Cancer. Cancer Res 2019; 79:3347-3359. [PMID: 30940661 DOI: 10.1158/0008-5472.can-18-3418] [Citation(s) in RCA: 91] [Impact Index Per Article: 18.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2018] [Revised: 02/26/2019] [Accepted: 03/29/2019] [Indexed: 11/16/2022]
Affiliation(s)
- Hanwen Zhang
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Ning Zhang
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Ying Liu
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Peng Su
- Department of Pathology, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Yiran Liang
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Yaming Li
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Xiaolong Wang
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Tong Chen
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Xiaojin Song
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Yuting Sang
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Yi Duan
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Jiashu Zhang
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Lijuan Wang
- Pathology Tissue Bank, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Bing Chen
- Pathology Tissue Bank, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Wenjing Zhao
- Pathology Tissue Bank, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
| | - Haiyang Guo
- Princess Margaret Cancer Center, University Health Network, Toronto, Ontario, Canada
| | - Zhaojian Liu
- Department of Cell Biology, Shandong University School of Medicine, Jinan, China
| | - Guohong Hu
- The Key Laboratory of Stem Cell Biology, Institute of Health Sciences, Shanghai Institutes for Biological Sciences, Chinese Academy of Sciences & Shanghai Jiao Tong University School of Medicine, University of Chinese Academy of Sciences, Shanghai, China
| | - Qifeng Yang
- Department of Breast Surgery, Qilu Hospital of Shandong University, Ji'nan, Shandong, China.
- Pathology Tissue Bank, Qilu Hospital of Shandong University, Ji'nan, Shandong, China
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142
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Liu H, Chen X, Lin T, Chen X, Yan J, Jiang S. MicroRNA-524-5p suppresses the progression of papillary thyroid carcinoma cells via targeting on FOXE1 and ITGA3 in cell autophagy and cycling pathways. J Cell Physiol 2019; 234:18382-18391. [PMID: 30941771 PMCID: PMC6618135 DOI: 10.1002/jcp.28472] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 02/22/2019] [Accepted: 03/06/2019] [Indexed: 01/01/2023]
Abstract
MicroRNAs are beneficial for cancer therapy as they can simultaneously downregulate multiple targets involved in diverse biological pathways related to tumor development. In papillary thyroid cancer, many microRNAs were identified as differentially expressed factors in tumor tissues. In another way, recent studies revealed cell proliferation, cell cycling, apoptosis, and autophagy are critical pathways controlling papillary thyroid cancer development and progression. As miR‐524‐5p was approved as a cancer suppressor targeting multiple genes in several types of cancer cells, this study aims to characterize the role of miR‐524‐5p in the thyroid cancer cell. The expression of miR‐524‐5p was decreased in the papillary thyroid cancer tissues and cell lines, while forkhead box E1 (FOXE1) and ITGA3 were increased. In the clinical case, expression of miR‐524‐5p, FOXE1, and ITGA3 were significantly correlated with papillary thyroid cancer development and progression. FOXE1 and ITGA3 were approved as direct targets of miR‐524‐5p. miR‐524‐5p could inhibit papillary thyroid cancer cell viability, migration, invasion, and apoptosis through targeting FOXE1 and ITGA3. Cell cycling and autophagy pathways were disturbed by downregulation of FOXE1 and ITGA3, respectively. Collectively, miR‐524‐5p targeting on FOXE1 and ITGA3 prevents thyroid cancer progression through different pathways including cell cycling and autophagy.
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Affiliation(s)
- Hui Liu
- Key Laboratory of Stem Cell Engineering and Regenerative Medicine, Department of Human Anatomy, Histology and Embryology, School of Basic Medical Sciences, Fujian Medical University, Fuzhou, Fujian, China
| | - Xi Chen
- Department of Surgery, Ruijin Hospital Affiliated of Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Ting Lin
- Department of Vascular Thyroid Surgery, Affiliated Union Hospital, Fujian Medical University, Fuzhou, Fujian, China
| | - Xingsheng Chen
- Department of Vascular Thyroid Surgery, Affiliated Union Hospital, Fujian Medical University, Fuzhou, Fujian, China
| | - Jiqi Yan
- Department of Surgery, Ruijin Hospital Affiliated of Shanghai Jiaotong University School of Medicine, Shanghai, People's Republic of China
| | - Shan Jiang
- Department of Vascular Thyroid Surgery, Affiliated Union Hospital, Fujian Medical University, Fuzhou, Fujian, China
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143
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Smith AG, Macleod KF. Autophagy, cancer stem cells and drug resistance. J Pathol 2019; 247:708-718. [PMID: 30570140 DOI: 10.1002/path.5222] [Citation(s) in RCA: 257] [Impact Index Per Article: 51.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2018] [Revised: 12/10/2018] [Accepted: 12/14/2018] [Indexed: 12/13/2022]
Abstract
Autophagy is a cellular survival mechanism that is induced by cancer therapy, among other stresses, and frequently contributes to cancer cell survival during long periods of dormancy and the eventual outgrowth of metastatic disease. Autophagy degrades large cellular structures that, once broken down, contribute to cellular survival through the recycling of their constituent metabolites. However, the extent to which this fuel function of autophagy is key to its role in promoting stemness, dormancy and drug resistance remains to be determined. Other roles for autophagy in determining cell fate more directly through targeted degradation of key transcription factors, such as p53 and FoxO3A, or by enforcing a reversible quiescent growth arrest, are discussed in this review. This review also highlights the need to parse out the roles of different forms of selective autophagy in stemness, CD44 expression and dormancy that, for example, are increasingly being attributed explicitly to mitophagy. The clinical relevance of this work and how an increased understanding of functions of autophagy in stemness, dormancy and drug resistance could be manipulated for increased therapeutic benefit, including eliminating minimal residual disease and preventing metastasis, are discussed. Copyright © 2018 Pathological Society of Great Britain and Ireland. Published by John Wiley & Sons, Ltd.
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Affiliation(s)
- Alexandra G Smith
- The Ben May Department for Cancer Research, The Gordon Center for Integrative Sciences, The University of Chicago, Chicago, IL, USA.,The Committee on Cancer Biology, The University of Chicago, Chicago, IL, USA.,Multi-disciplinary Training Grant in Cancer Research, University of Chicago, Chicago, IL, USA
| | - Kay F Macleod
- The Ben May Department for Cancer Research, The Gordon Center for Integrative Sciences, The University of Chicago, Chicago, IL, USA.,The Committee on Cancer Biology, The University of Chicago, Chicago, IL, USA.,Multi-disciplinary Training Grant in Cancer Research, University of Chicago, Chicago, IL, USA
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144
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Folkerts H, Hilgendorf S, Vellenga E, Bremer E, Wiersma VR. The multifaceted role of autophagy in cancer and the microenvironment. Med Res Rev 2018; 39:517-560. [PMID: 30302772 PMCID: PMC6585651 DOI: 10.1002/med.21531] [Citation(s) in RCA: 140] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2018] [Revised: 07/12/2018] [Accepted: 07/18/2018] [Indexed: 12/12/2022]
Abstract
Autophagy is a crucial recycling process that is increasingly being recognized as an important factor in cancer initiation, cancer (stem) cell maintenance as well as the development of resistance to cancer therapy in both solid and hematological malignancies. Furthermore, it is being recognized that autophagy also plays a crucial and sometimes opposing role in the complex cancer microenvironment. For instance, autophagy in stromal cells such as fibroblasts contributes to tumorigenesis by generating and supplying nutrients to cancerous cells. Reversely, autophagy in immune cells appears to contribute to tumor‐localized immune responses and among others regulates antigen presentation to and by immune cells. Autophagy also directly regulates T and natural killer cell activity and is required for mounting T‐cell memory responses. Thus, within the tumor microenvironment autophagy has a multifaceted role that, depending on the context, may help drive tumorigenesis or may help to support anticancer immune responses. This multifaceted role should be taken into account when designing autophagy‐based cancer therapeutics. In this review, we provide an overview of the diverse facets of autophagy in cancer cells and nonmalignant cells in the cancer microenvironment. Second, we will attempt to integrate and provide a unified view of how these various aspects can be therapeutically exploited for cancer therapy.
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Affiliation(s)
- Hendrik Folkerts
- Department of Hematology, Cancer Research Center Groningen, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Susan Hilgendorf
- Department of Hematology, Cancer Research Center Groningen, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Edo Vellenga
- Department of Hematology, Cancer Research Center Groningen, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Edwin Bremer
- Department of Hematology, Cancer Research Center Groningen, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
| | - Valerie R Wiersma
- Department of Hematology, Cancer Research Center Groningen, University Medical Center Groningen, University of Groningen, Groningen, The Netherlands
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145
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He R, Shi X, Zhou M, Zhao Y, Pan S, Zhao C, Guo X, Wang M, Li X, Qin R. Alantolactone induces apoptosis and improves chemosensitivity of pancreatic cancer cells by impairment of autophagy-lysosome pathway via targeting TFEB. Toxicol Appl Pharmacol 2018; 356:159-171. [PMID: 30086361 DOI: 10.1016/j.taap.2018.08.003] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2018] [Revised: 08/02/2018] [Accepted: 08/03/2018] [Indexed: 01/07/2023]
Abstract
The lysosome is emerging as a central regulator of the autophagic process, which plays a critical role in tumor growth and chemoresistance. Alantolactone, which is a natural compound produced by Inula helenium, has been shown to induce apoptosis in numerous cancer types. However, the mechanism by which alantolactone regulates apoptosis is still poorly understood. In this work, we observed that alantolactone caused the accumulation of autophagosomes due to impaired autophagic degradation and substantially inhibited the activity and expression of CTSB/CTSD proteins that when depleted caused lysosomal dysfunction. Furthermore, we found that alantolactone inhibited the proliferation of pancreatic cancer cells in vitro and in vivo and enhanced the chemosensitivity of pancreatic cancer cells to oxaliplatin. In addition, a reduction in TFEB levels was a critical event in the apoptosis and cell death caused by alantolactone. Our data demonstrated that alantolactone, which impaired autophagic degradation, was a pharmacological inhibitor of autophagy in pancreatic cancer cells and markedly enhanced the chemosensitivity of pancreatic cancer cells to oxaliplatin.
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Affiliation(s)
- Ruizhi He
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Xiuhui Shi
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Min Zhou
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Yan Zhao
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Shutao Pan
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Chunle Zhao
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Xingjun Guo
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Min Wang
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China
| | - Xu Li
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China.
| | - Renyi Qin
- Department of Biliary-Pancreatic Surgery, Affiliated Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430030, PR China.
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146
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Role of Pseudogenes in Tumorigenesis. Cancers (Basel) 2018; 10:cancers10080256. [PMID: 30071685 PMCID: PMC6115995 DOI: 10.3390/cancers10080256] [Citation(s) in RCA: 63] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2018] [Revised: 07/28/2018] [Accepted: 07/30/2018] [Indexed: 12/20/2022] Open
Abstract
Functional genomics has provided evidence that the human genome transcribes a large number of non-coding genes in addition to protein-coding genes, including microRNAs and long non-coding RNAs (lncRNAs). Among the group of lncRNAs are pseudogenes that have not been paid attention in the past, compared to other members of lncRNAs. However, increasing evidence points the important role of pseudogenes in diverse cellular functions, and dysregulation of pseudogenes are often associated with various human diseases including cancer. Like other types of lncRNAs, pseudogenes can also function as master regulators for gene expression and thus, they can play a critical role in various aspects of tumorigenesis. In this review we discuss the latest developments in pseudogene research, focusing on how pseudogenes impact tumorigenesis through different gene regulation mechanisms. Given the high sequence homology with the corresponding parent genes, we also discuss challenges for pseudogene research.
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147
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Abstract
The molecular machinery linking macroautophagy (autophagy hereafter) to apoptosis is still being elucidated. A recent study found that the transcription factor FOXO3/FOXO3A (forkhead box O3), which regulates autophagy, is itself regulated by basal autophagy to determine apoptosis sensitivity. Autophagy inhibition confers cell sensitivity to anti-cancer agents, and this effect is explained by the ability of FOXO3 to transactivate the pro-apoptotic gene BBC3/PUMA. Here, we discuss the possibility that FOXO3 acts as a cell surveillance mechanism to correct autophagy perturbations (i.e., autophagy inhibition), and confers apoptosis sensitization if this autophagy imbalance is not rectified.
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Affiliation(s)
- Brent E Fitzwalter
- a Department. of Pharmacology , University of Colorado School of Medicine , Aurora CO , USA
| | - Andrew Thorburn
- a Department. of Pharmacology , University of Colorado School of Medicine , Aurora CO , USA
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148
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Fitzwalter BE, Thorburn A. Autophagy inhibition improves anti-cancer drugs via FOXO3a activation. Oncotarget 2018; 9:25384-25385. [PMID: 29875995 PMCID: PMC5986638 DOI: 10.18632/oncotarget.25366] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Indexed: 01/07/2023] Open
Affiliation(s)
- Brent E Fitzwalter
- Andrew Thorburn: Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Andrew Thorburn
- Andrew Thorburn: Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO, USA
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149
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Codogno P, Morel E. FOXO3a Provides a Quickstep from Autophagy Inhibition to Apoptosis in Cancer Therapy. Dev Cell 2018. [PMID: 29533768 DOI: 10.1016/j.devcel.2018.02.019] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
FOXO3a, a member of the Forkhead transcription factor family, has roles in apoptosis and autophagy. In this issue of Developmental Cell, Fitzwalter et al. (2018) describe how the blockade of FOXO3a turnover, which normally occurs through autophagy, sensitizes cancer cells to apoptosis through FOXO3a-mediated stimulation of pro-apoptotic PUMA/BBC3 expression.
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Affiliation(s)
- Patrice Codogno
- INSERM U1151-CNRS UMR 8253, Institut Necker Enfants-Malades (INEM), 70014 Paris, France; Université Paris Descartes-Sorbonne Paris Cité, 70006 Paris, France.
| | - Etienne Morel
- INSERM U1151-CNRS UMR 8253, Institut Necker Enfants-Malades (INEM), 70014 Paris, France; Université Paris Descartes-Sorbonne Paris Cité, 70006 Paris, France.
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