1
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Kothari D, Lee WD, Kim SK. Allium Flavonols: Health Benefits, Molecular Targets, and Bioavailability. Antioxidants (Basel) 2020; 9:E888. [PMID: 32961762 PMCID: PMC7555649 DOI: 10.3390/antiox9090888] [Citation(s) in RCA: 39] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2020] [Revised: 09/11/2020] [Accepted: 09/16/2020] [Indexed: 12/14/2022] Open
Abstract
Allium species are revered worldwide as vegetables, condiments, and spices as well as the therapeutic agents in traditional medicine. The bioactive compounds in alliums mainly include organosulfur compounds, polyphenols, dietary fibers, and saponins. Flavonoids, particularly flavonols from alliums, have been demonstrated to have the antioxidant, anticancer, hypolipidemic, anti-diabetic, cardioprotective, neuroprotective, and antimicrobial activities. However, flavonols are mostly characterized from onions and have not been comprehensively reviewed across different species. This article therefore focuses on flavonol profiles from different Allium species, their health effects, underlying molecular mechanisms, and bioavailability. Intriguingly, the functional health effects of flavonols were mainly ascribed to their antioxidant and anti-inflammatory activities involving a cascade of multiple signaling pathways. Although the Allium-derived flavonols offer tremendous potential in preventing chronic disease risks, in-depth studies are needed to translate their clinical application.
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Affiliation(s)
| | | | - Soo-Ki Kim
- Department of Animal Science and Technology, Konkuk University, Seoul 05029, Korea; (D.K.); (W.-D.L.)
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2
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Niu T, Tian Y, Wang G, Guo G, Tong Y, Shi Y. Inhibition of ROS-NF-κB-dependent autophagy enhances Hypocrellin A united LED red light-induced apoptosis in squamous carcinoma A431 cells. Cell Signal 2020; 69:109550. [PMID: 32007528 DOI: 10.1016/j.cellsig.2020.109550] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2019] [Revised: 01/20/2020] [Accepted: 01/25/2020] [Indexed: 02/07/2023]
Abstract
Cutaneous squamous cell carcinoma (cSCC) is a type of malignant skin tumor derived from epidermal Malpighian cells. Photodynamic therapy is regarded as a crucial method in oncology. Hypocrellin A (HA), an efficient natural photosensitizer, has been reported to exert excellent light induced antiviral, antimicrobial and anticancer activity through mediating multiple signaling pathways. The purpose of the present study is to examine the effects of HA united red light irradiation on human squamous carcinoma A431 cells and further reveal the underlying regulatory mechanisms. The results showed that synergistic treatment of HA and red light irradiation inhibited cell proliferation and induced cell apoptosis and autophagy. Moreover, HA united red light irradiation caused a significant accumulation of reactive oxygen species (ROS), and induced the activation of c-Jun NH 2 terminal kinases (JNKs) which was inhibited by the antioxidant N-Acetyl-cysteine (NAC). Furthermore, HA united red light irradiation activated the nuclear factor-kappa B (NF-κB) pathway, and inhibition of NF-κB activity exacerbated HA united red light irradiation-induced apoptosis but suppressed cell autophagy. In addition, the inhibition of autophagy promoted HA united red light irradiation-induced apoptosis and facilitated the NF-κB activity. Over all, our results revealed that HA united red light irradiation could inhibit A431 cell proliferation by inducing apoptosis and autophagy via the activation of the ROS mediated JNK and NF-κB pathways, providing prospective for HA as a potential therapeutic for the treatment of cSCC.
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Affiliation(s)
- Tianhui Niu
- Department of Obstetrics, Gynecology and Reproductive Sciences, Air Force Medical Center, PLA, Beijing, China.
| | - Yan Tian
- Department of Dermatology, Air Force Medical Center, PLA, Beijing, China
| | - Guangyun Wang
- Aviation Medicine Research Laboratory, Air Force Medical Center, PLA, Beijing, China
| | - Guangjin Guo
- Aviation Medicine Research Laboratory, Air Force Medical Center, PLA, Beijing, China
| | - Ying Tong
- Department of Obstetrics, Gynecology and Reproductive Sciences, Air Force Medical Center, PLA, Beijing, China
| | - Ying Shi
- Department of Obstetrics, Gynecology and Reproductive Sciences, Air Force Medical Center, PLA, Beijing, China
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3
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Paul A, Edwards J, Pepper C, Mackay S. Inhibitory-κB Kinase (IKK) α and Nuclear Factor-κB (NFκB)-Inducing Kinase (NIK) as Anti-Cancer Drug Targets. Cells 2018; 7:E176. [PMID: 30347849 PMCID: PMC6210445 DOI: 10.3390/cells7100176] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2018] [Revised: 10/15/2018] [Accepted: 10/17/2018] [Indexed: 12/23/2022] Open
Abstract
The cellular kinases inhibitory-κB kinase (IKK) α and Nuclear Factor-κB (NF-κB)-inducing kinase (NIK) are well recognised as key central regulators and drivers of the non-canonical NF-κB cascade and as such dictate the initiation and development of defined transcriptional responses associated with the liberation of p52-RelB and p52-p52 NF-κB dimer complexes. Whilst these kinases and downstream NF-κB complexes transduce pro-inflammatory and growth stimulating signals that contribute to major cellular processes, they also play a key role in the pathogenesis of a number of inflammatory-based conditions and diverse cancer types, which for the latter may be a result of background mutational status. IKKα and NIK, therefore, represent attractive targets for pharmacological intervention. Here, specifically in the cancer setting, we reflect on the potential pathophysiological role(s) of each of these kinases, their associated downstream signalling outcomes and the stimulatory and mutational mechanisms leading to their increased activation. We also consider the downstream coordination of transcriptional events and phenotypic outcomes illustrative of key cancer 'Hallmarks' that are now increasingly perceived to be due to the coordinated recruitment of both NF-κB-dependent as well as NF-κB⁻independent signalling. Furthermore, as these kinases regulate the transition from hormone-dependent to hormone-independent growth in defined tumour subsets, potential tumour reactivation and major cytokine and chemokine species that may have significant bearing upon tumour-stromal communication and tumour microenvironment it reiterates their potential to be drug targets. Therefore, with the emergence of small molecule kinase inhibitors targeting each of these kinases, we consider medicinal chemistry efforts to date and those evolving that may contribute to the development of viable pharmacological intervention strategies to target a variety of tumour types.
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Affiliation(s)
- Andrew Paul
- Strathclyde Institute of Pharmacy and Biomedical Sciences, 161 Cathedral Street, University of Strathclyde, Glasgow G4 0NR, UK.
| | - Joanne Edwards
- Institute of Cancer Sciences, University of Glasgow, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1QH, UK.
| | - Christopher Pepper
- Brighton and Sussex Medical School, University of Sussex, Brighton BN1 9PX, UK.
| | - Simon Mackay
- Strathclyde Institute of Pharmacy and Biomedical Sciences, 161 Cathedral Street, University of Strathclyde, Glasgow G4 0NR, UK.
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4
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Göktuna SI, Diamanti MA, Chau TL. IKK
s and tumor cell plasticity. FEBS J 2018; 285:2161-2181. [DOI: 10.1111/febs.14444] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 02/22/2018] [Accepted: 03/21/2018] [Indexed: 12/13/2022]
Affiliation(s)
- Serkan I. Göktuna
- Department of Molecular Biology and Genetics Bilkent University Ankara Turkey
- National Nanotechnology Research Center (UNAM) Bilkent University Ankara Turkey
| | - Michaela A. Diamanti
- Georg‐Speyer‐Haus Institute for Tumor Biology and Experimental Therapy Frankfurt am Main Germany
| | - Tieu Lan Chau
- Department of Molecular Biology and Genetics Bilkent University Ankara Turkey
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5
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Zeng A, Yin J, Li Y, Li R, Wang Z, Zhou X, Jin X, Shen F, Yan W, You Y. miR-129-5p targets Wnt5a to block PKC/ERK/NF-κB and JNK pathways in glioblastoma. Cell Death Dis 2018. [PMID: 29531296 PMCID: PMC5847604 DOI: 10.1038/s41419-018-0343-1] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Therapeutic application of microRNAs (miRNAs) in Wnt-driven glioma has been valuable; however, their specific roles and mechanisms have not been completely investigated. Real-time quantitative PCR (RT-qPCR) was used to analyse the expression of microRNA-129-5p (miR-129-5p) in human glioma samples. Cell-Counting Kit 8 (CCK-8), flow cytometry, EdU, angiogenesis, Transwell invasion, wound healing, in vitro 3D migration and neurosphere formation assays were employed to assess the role of miR-129-5p in glioblastoma multiforme (GBM) cells. Moreover, we performed the luciferase reporter assay and the RNA-ChIP (chromatin immunoprecipitation) assay to confirm whether Wnt5a was a direct target of miR-129-5p. We also confirmed the correlation between the expression profile of miR-129-5p and Wnt5a in glioma patients from the Chinese Glioma Genome Atlas (CGGA) and investigated the overall survival of GBM patients using two data sets, namely, TCGA and GSE16011, according to their Wnt5a expression status. MiR-129-5p expression levels were downregulated and inversely correlated with Wnt5a expression levels in CGGA glioma patients. Restored expression of miR-129-5p blocked GBM cell proliferation, invasion, migration, angiogenesis, neurosphere formation and resistance to temozolomide. We reported that miR-129-5p directly targeted Wnt5a in glioma. Furthermore, we observed that overexpression of miR-129-5p inhibited the expression of Wnt5a, thus blocking the protein kinase C(PKC)/ERK/NF-κB and JNK pathways. Inhibiting Wnt5a rescued the effects of miR-129-5p loss and increased Wnt5a expression was associated with reduced overall survival of GBM patients. We also demonstrated the inhibitory effect of miR-129-5p on tumour growth in GBM using an in vivo model. The miR-129-5p/Wnt5a-axis-mediated PKC/ERK/NF-κB and JNK pathways have therapeutic potential in GBM treatment.
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Affiliation(s)
- Ailiang Zeng
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, 210029, Nanjing, PR China
| | - Jianxing Yin
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, 210029, Nanjing, PR China
| | - Yan Li
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, 210029, Nanjing, PR China
| | - Rui Li
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, 210029, Nanjing, PR China
| | - Zheng Wang
- Beijing Neurosurgical Institute, Capital Medical University, 100050, Beijing, PR China
| | - Xu Zhou
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, 210029, Nanjing, PR China
| | - Xin Jin
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, 210029, Nanjing, PR China
| | - Feng Shen
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, 210029, Nanjing, PR China
| | - Wei Yan
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, 210029, Nanjing, PR China.
| | - Yongping You
- Department of Neurosurgery, The First Affiliated Hospital of Nanjing Medical University, 210029, Nanjing, PR China.
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6
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Zhou DZ, Sun HY, Yue JQ, Peng Y, Chen YM, Zhong ZJ. Dihydromyricetin induces apoptosis and cytoprotective autophagy through ROS-NF-κB signalling in human melanoma cells. Free Radic Res 2018; 51:517-528. [PMID: 28482716 DOI: 10.1080/10715762.2017.1328552] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Dihydromyricetin (DHM), a Rattan tea extract, has recently been shown to have anti-cancer activity in mammalian cells. In this study, we investigated the effect of DHM on human melanoma cells. Apart from induction of apoptosis, we demonstrated that DHM induced an autophagic response. Moreover, pharmacological inhibition or genetic blockade of autophagy enhanced DHM-induced cell death and apoptosis, indicating the cytoprotective role of autophagy in DHM-treated human melanoma cells. Further study suggested that the nuclear factor kappa B (NF-κB) signalling pathway was involved in DHM-induced autophagy. Moreover, N-acetyl-cysteine (NAC), an ROS scavenger, abrogated the effects of DHM on NF-κB-dependent autophagy. Taken together, this evidence demonstrates that a strategy of blocking ROS-NF-κB-dependent autophagy to enhance the activity of DHM warrants further attention for the treatment of human melanoma.
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Affiliation(s)
- Ding-Zhou Zhou
- a Department of Neurosurgery , The Central Hospital of ShaoYang , Shaoyang , PR China
| | - Hai-Ying Sun
- a Department of Neurosurgery , The Central Hospital of ShaoYang , Shaoyang , PR China
| | - Jing-Qi Yue
- a Department of Neurosurgery , The Central Hospital of ShaoYang , Shaoyang , PR China
| | - Yong Peng
- b Department of Neurosurgery , The Second Xiangya Hospital of Central South University , Changsha , PR China
| | - Yi-Min Chen
- a Department of Neurosurgery , The Central Hospital of ShaoYang , Shaoyang , PR China
| | - Zhi-Jian Zhong
- a Department of Neurosurgery , The Central Hospital of ShaoYang , Shaoyang , PR China
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7
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Carrà G, Torti D, Crivellaro S, Panuzzo C, Taulli R, Cilloni D, Guerrasio A, Saglio G, Morotti A. The BCR-ABL/NF-κB signal transduction network: a long lasting relationship in Philadelphia positive Leukemias. Oncotarget 2018; 7:66287-66298. [PMID: 27563822 PMCID: PMC5323234 DOI: 10.18632/oncotarget.11507] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Accepted: 08/10/2016] [Indexed: 12/23/2022] Open
Abstract
The Nuclear Factor-kappa B (NF-κB) family of transcription factors plays a key role in cancer pathogenesis due to the ability to promote cellular proliferation and survival, to induce resistance to chemotherapy and to mediate invasion and metastasis. NF-κB is recruited through different mechanisms involving either canonical (RelA/p50) or non-canonical pathways (RelB/p50 or RelB/p52), which transduce the signals originated from growth-factors, cytokines, oncogenic stress and DNA damage, bacterial and viral products or other stimuli. The pharmacological inhibition of the NF-κB pathway has clearly been associated with significant clinical activity in different cancers. Almost 20 years ago, NF-κB was described as an essential modulator of BCR-ABL signaling in Chronic Myeloid Leukemia and Philadelphia-positive Acute Lymphoblastic Leukemia. This review summarizes the role of NF-κB in BCR-ABL-mediated leukemogenesis and provides new insights on the long lasting BCR-ABL/NF-κB connection.
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Affiliation(s)
- Giovanna Carrà
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Davide Torti
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Sabrina Crivellaro
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Cristina Panuzzo
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Riccardo Taulli
- Department of Oncology, University of Turin, Orbassano, Italy
| | - Daniela Cilloni
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Angelo Guerrasio
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Giuseppe Saglio
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
| | - Alessandro Morotti
- Department of Clinical and Biological Sciences, University of Turin, Orbassano, Italy
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8
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Simon PS, Bardhan K, Chen MR, Paschall AV, Lu C, Bollag RJ, Kong FC, Jin J, Kong FM, Waller JL, Pollock RE, Liu K. NF-κB functions as a molecular link between tumor cells and Th1/Tc1 T cells in the tumor microenvironment to exert radiation-mediated tumor suppression. Oncotarget 2018; 7:23395-415. [PMID: 27014915 PMCID: PMC5029635 DOI: 10.18632/oncotarget.8246] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Accepted: 02/28/2016] [Indexed: 12/12/2022] Open
Abstract
Radiation modulates both tumor cells and immune cells in the tumor microenvironment to exert its anti-tumor activity; however, the molecular connection between tumor cells and immune cells that mediates radiation-exerted tumor suppression activity in the tumor microenvironment is largely unknown. We report here that radiation induces rapid activation of the p65/p50 and p50/p50 NF-κB complexes in human soft tissue sarcoma (STS) cells. Radiation-activated p65/p50 and p50/p50 bind to the TNFα promoter to activate its transcription in STS cells. Radiation-induced TNFα induces tumor cell death in an autocrine manner. A sublethal dose of Smac mimetic BV6 induces cIAP1 and cIAP2 degradation to increase tumor cell sensitivity to radiation-induced cell death in vitro and to enhance radiation-mediated suppression of STS xenografts in vivo. Inhibition of caspases, RIP1, or RIP3 blocks radiation/TNFα-induced cell death, whereas inhibition of RIP1 blocks TNFα-induced caspase activation, suggesting that caspases and RIP1 act sequentially to mediate the non-compensatory cell death pathways. Furthermore, we determined in a syngeneic sarcoma mouse model that radiation up-regulates IRF3, IFNβ, and the T cell chemokines CCL2 and CCL5 in the tumor microenvironment, which are associated with activation and increased infiltration of Th1/Tc1 T cells in the tumor microenvironment. Moreover, tumor-infiltrating T cells are in their active form since both the perforin and FasL pathways are activated in irradiated tumor tissues. Consequently, combined BV6 and radiation completely suppressed tumor growth in vivo. Therefore, radiation-induced NF-κB functions as a molecular link between tumor cells and immune cells in the tumor microenvironment for radiation-mediated tumor suppression.
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Affiliation(s)
- Priscilla S Simon
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA.,Cancer Center, Georgia Regents University, Augusta, GA, USA.,Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - Kankana Bardhan
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA
| | - May R Chen
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA
| | - Amy V Paschall
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA.,Cancer Center, Georgia Regents University, Augusta, GA, USA.,Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - Chunwan Lu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA.,Charlie Norwood VA Medical Center, Augusta, GA, USA
| | - Roni J Bollag
- Cancer Center, Georgia Regents University, Augusta, GA, USA
| | - Feng-Chong Kong
- Radiation Oncology, Medical College of Georgia, Augusta, GA, USA.,Cancer Center, Georgia Regents University, Augusta, GA, USA
| | - JianYue Jin
- Radiation Oncology, Medical College of Georgia, Augusta, GA, USA.,Cancer Center, Georgia Regents University, Augusta, GA, USA
| | - Feng-Ming Kong
- Radiation Oncology, Medical College of Georgia, Augusta, GA, USA.,Cancer Center, Georgia Regents University, Augusta, GA, USA
| | - Jennifer L Waller
- Biostatistics and Epidemiology, Medical College of Georgia, Augusta, GA, USA
| | | | - Kebin Liu
- Department of Biochemistry and Molecular Biology, Medical College of Georgia, Augusta, GA, USA.,Cancer Center, Georgia Regents University, Augusta, GA, USA.,Charlie Norwood VA Medical Center, Augusta, GA, USA
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9
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Page A, Navarro M, Suárez-Cabrera C, Bravo A, Ramirez A. Context-Dependent Role of IKKβ in Cancer. Genes (Basel) 2017; 8:E376. [PMID: 29292732 PMCID: PMC5748694 DOI: 10.3390/genes8120376] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2017] [Revised: 11/29/2017] [Accepted: 12/01/2017] [Indexed: 12/17/2022] Open
Abstract
Inhibitor of nuclear factor kappa-B kinase subunit beta (IKKβ) is a kinase principally known as a positive regulator of the ubiquitous transcription factor family Nuclear Factor-kappa B (NF-κB). In addition, IKKβ also phosphorylates a number of other proteins that regulate many cellular processes, from cell cycle to metabolism and differentiation. As a consequence, IKKβ affects cell physiology in a variety of ways and may promote or hamper tumoral transformation depending on hitherto unknown circumstances. In this article, we give an overview of the NF-κB-dependent and -independent functions of IKKβ. We also summarize the current knowledge about the relationship of IKKβ with cellular transformation and cancer, obtained mainly through the study of animal models with cell type-specific modifications in IKKβ expression or activity. Finally, we describe the most relevant data about IKKβ implication in cancer obtained from the analysis of the human tumoral samples gathered in The Cancer Genome Atlas (TCGA) and the Catalogue of Somatic Mutations in Cancer (COSMIC).
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Affiliation(s)
- Angustias Page
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), 28040 Madrid, Spain.
- Oncogenomic Unit, Institute of Biomedical Investigation "12 de Octubre i+12", 28041 Madrid, Spain.
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), 28029 Madrid, Spain.
| | - Manuel Navarro
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), 28040 Madrid, Spain.
- Oncogenomic Unit, Institute of Biomedical Investigation "12 de Octubre i+12", 28041 Madrid, Spain.
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), 28029 Madrid, Spain.
| | - Cristian Suárez-Cabrera
- Oncogenomic Unit, Institute of Biomedical Investigation "12 de Octubre i+12", 28041 Madrid, Spain.
| | - Ana Bravo
- Department of Anatomy, Animal Production and Veterinary Clinical Sciences, Faculty of Veterinary Medicine, University of Santiago de Compostela, 27002 Lugo, Spain.
| | - Angel Ramirez
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), 28040 Madrid, Spain.
- Oncogenomic Unit, Institute of Biomedical Investigation "12 de Octubre i+12", 28041 Madrid, Spain.
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), 28029 Madrid, Spain.
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10
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Constitutive expression of NF-κB inducing kinase in regulatory T cells impairs suppressive function and promotes instability and pro-inflammatory cytokine production. Sci Rep 2017; 7:14779. [PMID: 29116141 PMCID: PMC5677020 DOI: 10.1038/s41598-017-14965-x] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/16/2017] [Accepted: 10/16/2017] [Indexed: 12/22/2022] Open
Abstract
CD4+Foxp3+ regulatory T cells (Tregs) are indispensable negative regulators of immune responses. To understand Treg biology in health and disease, it is critical to elucidate factors that affect Treg homeostasis and suppressive function. Tregs express several costimulatory TNF receptor family members that activate non-canonical NF-κB via accumulation of NF-κB inducing kinase (NIK). We previously showed that constitutive NIK expression in all T cells causes fatal multi-organ autoimmunity associated with hyperactive conventional T cell responses and poor Treg-mediated suppression. Here, we show that constitutive NIK expression that is restricted to Tregs via a Cre-inducible transgene causes an autoimmune syndrome. We found that constitutive NIK expression decreased expression of numerous Treg signature genes and microRNAs involved in Treg homeostasis and suppressive phenotype. NIK transgenic Tregs competed poorly with WT Tregs in vivo and produced pro-inflammatory cytokines upon stimulation. Lineage tracing experiments revealed accumulation of ex-Foxp3+ T cells in mice expressing NIK constitutively in Tregs, and these former Tregs produced copious IFNγ and IL-2. Our data indicate that under inflammatory conditions in which NIK is activated, Tregs may lose suppressive function and may actively contribute to inflammation.
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11
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Page A, Bravo A, Suarez-Cabrera C, Alameda JP, Casanova ML, Lorz C, Segrelles C, Segovia JC, Paramio JM, Navarro M, Ramirez A. IKKβ-Mediated Resistance to Skin Cancer Development Is Ink4a/Arf-Dependent. Mol Cancer Res 2017; 15:1255-1264. [PMID: 28584022 DOI: 10.1158/1541-7786.mcr-17-0157] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Revised: 05/12/2017] [Accepted: 05/25/2017] [Indexed: 11/16/2022]
Abstract
IKKβ (encoded by IKBKB) is a protein kinase that regulates the activity of numerous proteins important in several signaling pathways, such as the NF-κB pathway. IKKβ exerts a protumorigenic role in several animal models of lung, hepatic, intestinal, and oral cancer. In addition, genomic and proteomic studies of human tumors also indicate that IKBKB gene is amplified or overexpressed in multiple tumor types. Here, the relevance of IKKβ in skin cancer was determined by performing carcinogenesis studies in animal models overexpressing IKKβ in the basal skin layer. IKKβ overexpression resulted in a striking resistance to skin cancer development and an increased expression of several tumor suppressor proteins, such as p53, p16, and p19. Mechanistically, this skin tumor-protective role of IKKβ is independent of p53, but dependent on the activity of the Ink4a/Arf locus. Interestingly, in the absence of p16 and p19, IKKβ-increased expression favors the appearance of cutaneous spindle cell-like squamous cell carcinomas, which are highly aggressive tumors. These results reveal that IKKβ activity prevents skin tumor development, and shed light on the complex nature of IKKβ effects on cancer progression, as IKKβ can both promote and prevent carcinogenesis depending on the cell type or molecular context.Implications: The ability of IKKβ to promote or prevent carcinogenesis suggests the need for further evaluation when targeting this protein. Mol Cancer Res; 15(9); 1255-64. ©2017 AACR.
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Affiliation(s)
- Angustias Page
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- Cell and Molecular Oncology Group, Institute of Biomedical Research, Universitary Hospital 12 de Octubre, Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Spain
| | - Ana Bravo
- Department of Anatomy, Animal Production and Veterinary Clinical Sciences, Faculty of Veterinary Medicine, University of Santiago de Compostela, Lugo, Spain
| | - Cristian Suarez-Cabrera
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- Cell and Molecular Oncology Group, Institute of Biomedical Research, Universitary Hospital 12 de Octubre, Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Spain
| | - Josefa P Alameda
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- Cell and Molecular Oncology Group, Institute of Biomedical Research, Universitary Hospital 12 de Octubre, Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Spain
| | - M Llanos Casanova
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- Cell and Molecular Oncology Group, Institute of Biomedical Research, Universitary Hospital 12 de Octubre, Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Spain
| | - Corina Lorz
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- Cell and Molecular Oncology Group, Institute of Biomedical Research, Universitary Hospital 12 de Octubre, Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Spain
| | - Carmen Segrelles
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- Cell and Molecular Oncology Group, Institute of Biomedical Research, Universitary Hospital 12 de Octubre, Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Spain
| | - José C Segovia
- Hematopoietic Innovative Therapies Division. Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), Spain
- Advanced Therapies Mixed Unit, Instituto de Investigación Sanitaria-Fundación Jiménez Díaz (IIS-FJD), Madrid, Spain
| | - Jesús M Paramio
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- Cell and Molecular Oncology Group, Institute of Biomedical Research, Universitary Hospital 12 de Octubre, Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Spain
| | - Manuel Navarro
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain
- Cell and Molecular Oncology Group, Institute of Biomedical Research, Universitary Hospital 12 de Octubre, Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Spain
| | - Angel Ramirez
- Molecular Oncology Unit, Centro de Investigaciones Energéticas, Medioambientales y Tecnológicas (CIEMAT), Madrid, Spain.
- Cell and Molecular Oncology Group, Institute of Biomedical Research, Universitary Hospital 12 de Octubre, Madrid, Spain
- Centro de Investigación Biomédica en Red de Cáncer (CIBERONC), Spain
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12
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Chen Y, Zhou B, Xu L, Fan H, Xie J, Wang D. MicroRNA-146a promotes gastric cancer cell apoptosis by targeting transforming growth factor β-activated kinase 1. Mol Med Rep 2017; 16:755-763. [PMID: 28560435 PMCID: PMC5482191 DOI: 10.3892/mmr.2017.6640] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2016] [Accepted: 03/17/2017] [Indexed: 12/27/2022] Open
Abstract
Accumulating evidence suggests that microRNA (miR)-146a functions as an oncogene or tumor suppressor in various cancers. However, the role of miR-146a in gastric cancer (GC) remains to be elucidated. The present study investigated the function of miR-146a in GC cells. The results of the present study revealed that miR-146a modulates GC cell apoptosis. Overexpression of miR-146a significantly increased apoptosis of SGC-7901 cells, whereas inhibition of miR-146a protected cells from apoptosis. miR-146a expression in GC cells was inversely correlated with transforming growth factor β-activated kinase 1 (TAK1) expression, at the mRNA and protein levels. Furthermore, small interfering RNA-mediated silencing of TAK1 enhanced GC cell apoptosis, whereas overexpression of TAK1 promoted survival of GC cells. Overexpression of miR-146a or knockdown of TAK1 led to a marked increase in inhibitor of κBα (IκBα) and a decrease in B-cell lymphoma 2 (Bcl-2) expression levels in SGC-7901 cells. By contrast, silencing of miR-146a or TAK1 overexpression downregulated IκBα and upregulated Bcl-2 expression levels. Therefore, the results of the present study demonstrated a novel negative feedback mechanism to promote GC cell apoptosis involving the miR-146a/TAK1/nuclear factor-κB axis.
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Affiliation(s)
- Yiming Chen
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Bin Zhou
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Lubai Xu
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Hengwei Fan
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Junqin Xie
- Department of Hepatobiliary Surgery, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
| | - Dan Wang
- Department of Pediatrics, The First Affiliated Hospital of Wenzhou Medical University, Wenzhou, Zhejiang 325000, P.R. China
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13
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Inhibiting ROS-NF-κB-dependent autophagy enhanced brazilin-induced apoptosis in head and neck squamous cell carcinoma. Food Chem Toxicol 2017; 101:55-66. [DOI: 10.1016/j.fct.2017.01.002] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2016] [Revised: 12/19/2016] [Accepted: 01/03/2017] [Indexed: 02/07/2023]
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14
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Bennett L, Quinn J, McCall P, Mallon EA, Horgan PG, McMillan DC, Paul A, Edwards J. High IKKα expression is associated with reduced time to recurrence and cancer specific survival in oestrogen receptor (ER)-positive breast cancer. Int J Cancer 2017; 140:1633-1644. [PMID: 28006839 DOI: 10.1002/ijc.30578] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2016] [Revised: 11/11/2016] [Accepted: 12/09/2016] [Indexed: 01/01/2023]
Abstract
The aim of our study was to examine the relationship between tumour IKKα expression and breast cancer recurrence and survival. Immunohistochemistry was employed in a discovery and a validation tissue microarray to assess the association of tumour IKKα expression and clinico-pathological characteristics. After siRNA-mediated silencing of IKKα, cell viability and apoptosis were assessed in MCF7 and MDA-MB-231 breast cancer cells. In both the discovery and validation cohorts, associations observed between IKKα and clinical outcome measures were potentiated in oestrogen receptor (ER) positive Luminal A tumours. In the discovery cohort, cytoplasmic IKKα was associated with disease-free survival (p = 0.029) and recurrence-free survival on tamoxifen (p < 0.001) in Luminal A tumours. Nuclear IKKα and a combination of cytoplasmic and nuclear IKKα (total tumour cell IKKα) were associated with cancer-specific survival (p = 0.012 and p = 0.007, respectively) and recurrence-free survival on tamoxifen (p = 0.013 and p < 0.001, respectively) in Luminal A tumours. In the validation cohort, cytoplasmic IKKα was associated with cancer-specific survival (p = 0.023), disease-free survival (p = 0.002) and recurrence-free survival on tamoxifen (p = 0.009) in Luminal A tumours. Parallel experiment with breast cancer cells in vitro demonstrated the non-canonical NF-κB pathway was inducible by exposure to lymphotoxin in ER-positive MCF7 cells and not in ER-negative MDA-MB-231 cells. Reduction in IKKα expression by siRNA transfection increased levels of apoptosis and reduced cell viability in MCF7 but not in MDA-MB-231 cells. IKKα is an important determinant of poor outcome in patients with ER-positive invasive ductal breast cancer and thus may represent a potential therapeutic target.
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Affiliation(s)
- Lindsay Bennett
- Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, United Kingdom
| | - Jean Quinn
- Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, United Kingdom
| | - Pamela McCall
- Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, United Kingdom
| | - Elizabeth A Mallon
- Department of Pathology, Southern General Hospital, Glasgow, Scotland, United Kingdom
| | - Paul G Horgan
- Academic Unit of Surgery, School of Medicine, University of Glasgow, Glasgow Royal Infirmary, Glasgow, Scotland, United Kingdom
| | - Donald C McMillan
- Academic Unit of Surgery, School of Medicine, University of Glasgow, Glasgow Royal Infirmary, Glasgow, Scotland, United Kingdom
| | - Andrew Paul
- Strathclyde Institute of Pharmacy and Biomedical Sciences, University of Strathclyde, Glasgow, Scotland, United Kingdom
| | - Joanne Edwards
- Wolfson Wohl Cancer Research Centre, Institute of Cancer Sciences, College of Medical, Veterinary and Life Sciences, University of Glasgow, Glasgow, Scotland, United Kingdom
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15
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Li Y, Li W, Liang B, Li L, Wang L, Huang H, Guo S, Wang Y, He Y, Chen L, He W. Identification of cancer risk lncRNAs and cancer risk pathways regulated by cancer risk lncRNAs based on genome sequencing data in human cancers. Sci Rep 2016; 6:39294. [PMID: 27991568 PMCID: PMC5171637 DOI: 10.1038/srep39294] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Accepted: 11/21/2016] [Indexed: 01/07/2023] Open
Abstract
Cancer is a group of diseases involving abnormal cell growth with the potential to invade or spread to other parts of the body. The complexity of cancer can be reduced to a small number of underlying principles like cancer hallmarks which could govern the transformation of normal cells to cancer. Besides, the growth and metastasis of cancer often relate to combined effects of long non-coding RNAs (lncRNAs). Here, we performed comprehensive analysis for lncRNA expression profiles and clinical data of six types of human cancer patients from The Cancer Genome Atlas (TCGA), and identified six risk pathways and twenty three lncRNAs. In addition, twenty three cancer risk lncRNAs which were closely related to the occurrence or development of cancer had a good classification performance for samples of testing datasets of six cancer datasets. More important, these lncRNAs were able to separate samples in the entire cancer dataset into high-risk group and low-risk group with significantly different overall survival (OS), which was further validated in ten validation datasets. In our study, the robust and effective cancer biomarkers were obtained from cancer datasets which had information of normal-tumor samples. Overall, our research can provide a new perspective for the further study of clinical diagnosis and treatment of cancer.
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Affiliation(s)
- Yiran Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Hei Longjiang Province, Postal code: 150081, China
| | - Wan Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Hei Longjiang Province, Postal code: 150081, China
| | - Binhua Liang
- National Microbology Laboratory, Public Health Agency of Canada, Winnipeg, Manitoba, Canada
| | - Liansheng Li
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Hei Longjiang Province, Postal code: 150081, China
| | - Li Wang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Hei Longjiang Province, Postal code: 150081, China
| | - Hao Huang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Hei Longjiang Province, Postal code: 150081, China
| | - Shanshan Guo
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Hei Longjiang Province, Postal code: 150081, China
| | - Yahui Wang
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Hei Longjiang Province, Postal code: 150081, China
| | - Yuehan He
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Hei Longjiang Province, Postal code: 150081, China
| | - Lina Chen
- College of Bioinformatics Science and Technology, Harbin Medical University, Harbin, Hei Longjiang Province, Postal code: 150081, China
| | - Weiming He
- Institute of Opto-electronics, Harbin Institute of Technology, Harbin, Heilongjiang Province, Postal code: 150081, China
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16
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Wilson AJ, Fadare O, Beeghly-Fadiel A, Son DS, Liu Q, Zhao S, Saskowski J, Uddin MJ, Daniel C, Crews B, Lehmann BD, Pietenpol JA, Crispens MA, Marnett LJ, Khabele D. Aberrant over-expression of COX-1 intersects multiple pro-tumorigenic pathways in high-grade serous ovarian cancer. Oncotarget 2016; 6:21353-68. [PMID: 25972361 PMCID: PMC4673270 DOI: 10.18632/oncotarget.3860] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2015] [Accepted: 04/21/2015] [Indexed: 01/25/2023] Open
Abstract
Cyclooxygenase-1 (COX-1) is implicated in ovarian cancer. However, patterns of COX expression and function have been unclear and controversial. In this report, patterns of COX-1 and COX-2 gene expression were obtained from RNA-seq data through The Cancer Genome Atlas. Our analysis revealed markedly higher COX-1 mRNA expression than COX-2 in high-grade serous ovarian cancers (HGSOC) and higher COX-1 expression in HGSOC tumors than 10 other tumor types. High expression of COX-1 in HGSOC tumors was confirmed in an independent tissue microarray. In contrast, lower or similar expression of COX-1 compared to COX-2 was observed in endometrioid, mucinous and clear cell tumors. Stable COX-1 knockdown in HGSOC-representative OVCAR-3 ovarian cancer cells reduced gene expression in multiple pro-tumorigenic pathways. Functional cell viability, clonogenicity, and migration/invasion assays were consistent with transcriptomic changes. These effects were reversed by stable over-expression of COX-1 in SKOV-3 cells. Our results demonstrate a distinct pattern of COX-1 over-expression in HGSOC tumors and strong association of COX-1 with multiple pro-tumorigenic pathways in ovarian cancer cells. These findings provide additional insight into the role of COX-1 in human ovarian cancer and support further development of methods to selectively target COX-1 in the management of HGSOC tumors.
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Affiliation(s)
- Andrew J Wilson
- Department of Obstetrics & Gynecology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Oluwole Fadare
- Department of Pathology, University of California San Diego School of Medicine, La Jolla, CA, USA
| | - Alicia Beeghly-Fadiel
- Department of Medicine, Division of Epidemiology, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Deok-Soo Son
- Department of Biochemistry & Cancer Biology, Meharry Medical College, Nashville, TN, USA
| | - Qi Liu
- Department of Biomedical Informatics, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt Center for Quantitative Sciences, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Shilin Zhao
- Vanderbilt Center for Quantitative Sciences, Vanderbilt University School of Medicine, Nashville, TN, USA
| | - Jeanette Saskowski
- Department of Obstetrics & Gynecology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Md Jashim Uddin
- Department of Biochemistry, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Cristina Daniel
- Department of Biochemistry, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Brenda Crews
- Department of Biochemistry, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Brian D Lehmann
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Biochemistry, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Jennifer A Pietenpol
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Biochemistry, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Marta A Crispens
- Department of Obstetrics & Gynecology, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Lawrence J Marnett
- Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA.,Department of Biochemistry, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt Institute of Chemical Biology, Vanderbilt University Medical Center, Nashville, TN, USA
| | - Dineo Khabele
- Department of Obstetrics & Gynecology, Vanderbilt University Medical Center, Nashville, TN, USA.,Vanderbilt-Ingram Cancer Center, Vanderbilt University Medical Center, Nashville, TN, USA
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17
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Peng J, Ren KD, Yang J, Luo XJ. Mitochondrial E3 ubiquitin ligase 1: A key enzyme in regulation of mitochondrial dynamics and functions. Mitochondrion 2016; 28:49-53. [PMID: 27034206 DOI: 10.1016/j.mito.2016.03.007] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2015] [Revised: 03/17/2016] [Accepted: 03/21/2016] [Indexed: 11/17/2022]
Abstract
Mitochondrial E3 ubiquitin ligase 1 (Mul1) is a multifunctional mitochondrial membrane protein with its RING domain exposed to the cytoplasm. On the one hand, Mul1 functions as a ubiquitin-ligase to ubiquitinate a bunch of signal molecules, such as mitofusin2 (Mfn2), Akt, p53 and ULK1, through its RING finger domain, leading to proteins degradation. On the other hand, Mul1 acts as a small ubiquitin-like modifiers (SUMO) E3 ligase to sumoylate certain proteins, such as dynamin-related protein 1 (Drp1), enhancing protein stabilization. Through the dual functions of ubiquitination and SUMOylation, Mul1 involves in regulation of many physiological and pathological processes, such as mitochondrial dynamics, cell growth, apoptosis and mitophagy. In addition, Mul1 can also directly activate or interact with some proteins, such as NF-κB and JNK, to take part in the regulation of cellular apoptosis. This review summarizes recent progress in relevant studies on the physiological and pathological functions of Mul1 and pays special attention to its role in regulation of mitochondrial dynamics.
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Affiliation(s)
- Jun Peng
- Department of Laboratory Medicine, Xiangya School of Medicine, Central South University, Changsha 410013, China; Department of Pharmacology, School of Pharmaceutical Sciences, Central South University, Changsha 410078, China
| | - Kai-Di Ren
- Department of Pharmacology, School of Pharmaceutical Sciences, Central South University, Changsha 410078, China
| | - Jie Yang
- Department of Neurology, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Xiu-Ju Luo
- Department of Laboratory Medicine, Xiangya School of Medicine, Central South University, Changsha 410013, China.
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18
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Zuo H, Yuan J, Chen Y, Li S, Su Z, Wei E, Li C, Weng S, Xu X, He J. A MicroRNA-Mediated Positive Feedback Regulatory Loop of the NF-κB Pathway in Litopenaeus vannamei. THE JOURNAL OF IMMUNOLOGY 2016; 196:3842-53. [DOI: 10.4049/jimmunol.1502358] [Citation(s) in RCA: 53] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2015] [Accepted: 02/23/2016] [Indexed: 01/17/2023]
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19
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Cahill KE, Morshed RA, Yamini B. Nuclear factor-κB in glioblastoma: insights into regulators and targeted therapy. Neuro Oncol 2015; 18:329-39. [PMID: 26534766 DOI: 10.1093/neuonc/nov265] [Citation(s) in RCA: 98] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Accepted: 09/24/2015] [Indexed: 12/14/2022] Open
Abstract
Nuclear factor-κB (NF-κB) is a ubiquitous transcription factor that regulates multiple aspects of cancer formation, growth, and treatment response. Glioblastoma (GBM), the most common primary malignant tumor of the central nervous system, is characterized by molecular heterogeneity, resistance to therapy, and high NF-κB activity. In this review, we examine the mechanisms by which oncogenic pathways active in GBM impinge on the NF-κB system, discuss the role of NF-κB signaling in regulating the phenotypic properties that promote GBM and, finally, review the components of the NF-κB pathway that have been targeted for treatment in both preclinical studies and clinical trials. While a direct role for NF-κB in gliomagenesis has not been reported, the importance of this transcription factor in the overall malignant phenotype suggests that more rational and specific targeting of NF-κB-dependent pathways can make a significant contribution to the management of GBM.
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Affiliation(s)
- Kirk E Cahill
- Section of Neurosurgery, Department of Surgery, University of Chicago, Chicago, Illinois
| | - Ramin A Morshed
- Section of Neurosurgery, Department of Surgery, University of Chicago, Chicago, Illinois
| | - Bakhtiar Yamini
- Section of Neurosurgery, Department of Surgery, University of Chicago, Chicago, Illinois
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