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Rainey NE, Armand AS, Petit PX. Sodium arsenite and arsenic trioxide differently affect the oxidative stress of lymphoblastoid cells: An intricate crosstalk between mitochondria, autophagy and cell death. PLoS One 2024; 19:e0302701. [PMID: 38728286 PMCID: PMC11086853 DOI: 10.1371/journal.pone.0302701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2023] [Accepted: 04/10/2024] [Indexed: 05/12/2024] Open
Abstract
Although the toxicity of arsenic depends on its chemical forms, few studies have taken into account the ambiguous phenomenon that sodium arsenite (NaAsO2) acts as a potent carcinogen while arsenic trioxide (ATO, As2O3) serves as an effective therapeutic agent in lymphoma, suggesting that NaAsO2 and As2O3 may act via paradoxical ways to either promote or inhibit cancer pathogenesis. Here, we compared the cellular response of the two arsenical compounds, NaAsO2 and As2O3, on the Burkitt lymphoma cell model, the Epstein Barr Virus (EBV)-positive P3HR1 cells. Using flow cytometry and biochemistry analyses, we showed that a NaAsO2 treatment induces P3HR1 cell death, combined with drastic drops in ΔΨm, NAD(P)H and ATP levels. In contrast, As2O3-treated cells resist to cell death, with a moderate reduction of ΔΨm, NAD(P)H and ATP. While both compounds block cells in G2/M and affect their protein carbonylation and lipid peroxidation, As2O3 induces a milder increase in superoxide anions and H2O2 than NaAsO2, associated to a milder inhibition of antioxidant defenses. By electron microscopy, RT-qPCR and image cytometry analyses, we showed that As2O3-treated cells display an overall autophagic response, combined with mitophagy and an unfolded protein response, characteristics that were not observed following a NaAsO2 treatment. As previous works showed that As2O3 reactivates EBV in P3HR1 cells, we treated the EBV- Ramos-1 cells and showed that autophagy was not induced in these EBV- cells upon As2O3 treatment suggesting that the boost of autophagy observed in As2O3-treated P3HR1 cells could be due to the presence of EBV in these cells. Overall, our results suggest that As2O3 is an autophagic inducer which action is enhanced when EBV is present in the cells, in contrast to NaAsO2, which induces cell death. That's why As2O3 is combined with other chemicals, as all-trans retinoic acid, to better target cancer cells in therapeutic treatments.
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Affiliation(s)
- Nathan Earl Rainey
- CNRS UMR 8003 Paris University, SSPIN, Neuroscience Institute, Team “Mitochondria, Apoptosis and Autophagy Signaling”, Campus Saint-Germain, Paris, France
| | - Anne-Sophie Armand
- INSERM U1151, Institut Necker Enfants Malades (INEM), Campus Necker, Université Paris Cité, Paris, France
| | - Patrice X. Petit
- CNRS UMR 8003 Paris University, SSPIN, Neuroscience Institute, Team “Mitochondria, Apoptosis and Autophagy Signaling”, Campus Saint-Germain, Paris, France
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Jiang K, Bai L, Wang C, Xiao X, Cheng Z, Peng H, Liu S. The Aurora kinase inhibitor AT9283 inhibits Burkitt lymphoma growth by regulating Warburg effect. PeerJ 2023; 11:e16581. [PMID: 38099309 PMCID: PMC10720464 DOI: 10.7717/peerj.16581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 11/13/2023] [Indexed: 12/17/2023] Open
Abstract
Objective To investigate the effect of the kinase inhibitor AT9283 on Burkitt lymphoma (BL) cells and elucidate the underlying mechanisms. Methods The effect of AT9283 on the proliferation of BL cell lines was tested using the MTT assay. Apoptosis and cell cycle were measured by flow cytometry. The proteins associated with the cell cycle, apoptosis, and the Warburg effect were detected using Western blotting. Alterations in glycolytic metabolism in terms of glucose intake and lactate concentrations were determined by glucose and lactate assays. Results The current study utilized the GEPIA, the Human Protein Atlas (HAP) database and immunohistochemistry to conduct analyses, which revealed a high expression of Aurora kinases and Warburg effect-related proteins in malignant B-cell lymphoma tissues. AT9283 significantly inhibited the cell proliferation of BL cells and induced G2/M arrest. Additionally, AT9283 induced apoptosis in BL cells and reversed the Warburg effect by increasing glucose uptake and reducing lactate production. Moreover, the protein expression of hexokinase 2, pyruvate kinase M2, and lactate dehydrogenase A was significantly suppressed by AT9283, possibly through the inhibition of c-Myc and HIF-1α protein expression. Conclusion The reversal of the Warburg effect in BL cells and the subsequent inhibition of cell proliferation and induction of apoptosis were observed by targeting Aurora A and Aurora B with AT9283. This finding may present new therapeutic options and targets for BL.
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Affiliation(s)
- Kaiming Jiang
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lihong Bai
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Canfei Wang
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiang Xiao
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Institute of Molecular Hematology, Central South University, Changsha, Hunan, China
| | - Zhao Cheng
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Institute of Molecular Hematology, Central South University, Changsha, Hunan, China
| | - Hongling Peng
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Institute of Molecular Hematology, Central South University, Changsha, Hunan, China
| | - Sufang Liu
- Department of Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan, China
- Institute of Molecular Hematology, Central South University, Changsha, Hunan, China
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3
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Bakun P, Mlynarczyk DT, Koczorowski T, Cerbin-Koczorowska M, Piwowarczyk L, Kolasiński E, Stawny M, Kuźmińska J, Jelińska A, Goslinski T. Tea-break with epigallocatechin gallate derivatives - Powerful polyphenols of great potential for medicine. Eur J Med Chem 2023; 261:115820. [PMID: 37776575 DOI: 10.1016/j.ejmech.2023.115820] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2023] [Revised: 09/09/2023] [Accepted: 09/12/2023] [Indexed: 10/02/2023]
Abstract
Epigallocatechin gallate (EGCG) is a polyphenol present in green tea (Camellia sinensis), which has revealed anti-cancer effects toward a variety of cancer cells in vitro and protective potential against neurodegenerative diseases such as Alzheimer's and Parkinson's. Unfortunately, EGCG presents disappointing bioavailability after oral administration, primarily due to its chemical instability and poor absorption. Due to these limitations, EGCG is currently not used in medication, but only as a dietary supplement in the form of green tea extract. Therefore, it needs further modifications before being considered suitable for extensive medical applications. In this article, we review the scientific literature about EGCG derivatives focusing on their biological properties and potential medical applications. The most common chemical modifications of epigallocatechin gallate rely on introducing fatty acid chains or sugar molecules to its chemical structure to modify solubility. Another frequently employed procedure is based on blocking EGCG's hydroxyl groups with various substituents. Novel derivatives reveal interesting properties, of which, antioxidant, anti-inflammatory, antitumor and antimicrobial, are especially important. It is worth noting that the most promising EGCG derivatives present higher stability and activity than base EGCG.
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Affiliation(s)
- Paweł Bakun
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, Poznań, 60-780, Poland.
| | - Dariusz T Mlynarczyk
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, Poznań, 60-780, Poland
| | - Tomasz Koczorowski
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, Poznań, 60-780, Poland
| | - Magdalena Cerbin-Koczorowska
- Chair and Department of Medical Education, Poznan University of Medical Sciences, Rokietnicka 7, Poznań, 60-806, Poland; Edinburgh Medical School: Medical Education, University of Edinburgh, Chancellor's Building, EH16 4SB, Edinburgh, Scotland, United Kingdom
| | - Ludwika Piwowarczyk
- Chair and Department of Pharmaceutical Chemistry, Poznan University of Medical Sciences, Grunwaldzka 6, Poznań, 60-780, Poland
| | - Emil Kolasiński
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, Poznań, 60-780, Poland
| | - Maciej Stawny
- Chair and Department of Pharmaceutical Chemistry, Poznan University of Medical Sciences, Grunwaldzka 6, Poznań, 60-780, Poland
| | - Joanna Kuźmińska
- Chair and Department of Pharmaceutical Chemistry, Poznan University of Medical Sciences, Grunwaldzka 6, Poznań, 60-780, Poland
| | - Anna Jelińska
- Chair and Department of Pharmaceutical Chemistry, Poznan University of Medical Sciences, Grunwaldzka 6, Poznań, 60-780, Poland
| | - Tomasz Goslinski
- Chair and Department of Chemical Technology of Drugs, Poznan University of Medical Sciences, Grunwaldzka 6, Poznań, 60-780, Poland.
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Rani A, Saini V, Patra P, Prashar T, Pandey RK, Mishra A, Jha HC. Epigallocatechin Gallate: A Multifaceted Molecule for Neurological Disorders and Neurotropic Viral Infections. ACS Chem Neurosci 2023; 14:2968-2980. [PMID: 37590965 DOI: 10.1021/acschemneuro.3c00368] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/19/2023] Open
Abstract
Epigallocatechin-3-gallate (EGCG), a polyphenolic moiety found in green tea extracts, exhibits pleiotropic bioactivities to combat many diseases including neurological ailments. These neurological diseases include Alzheimer's disease, multiple sclerosis, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis. For instance, in the case of Alzheimer's disease, the formation of a β-sheet in the region of the 10th-21st amino acids was significantly reduced in EGCG-induced oligomeric samples of Aβ40. Its interference induces the formation of Aβ structures with an increase in intercenter-of-mass distances, reduction in interchain/intrachain contacts, reduction in β-sheet propensity, and increase in α-helix. Besides, numerous neurotropic viruses are known to instigate or aggravate neurological ailments. It exerts an effect on the oxidative damage caused in neurodegenerative disorders by acting on GSK3-β, PI3K/Akt, and downstream signaling pathways via caspase-3 and cytochrome-c. EGCG also diminishes these viral-mediated effects, such as EGCG delayed HSV-1 infection by blocking the entry for virions, inhibitory effects on NS3/4A protease or NS5B polymerase of HCV and potent inhibitor of ZIKV NS2B-NS3pro/NS3 serine protease (NS3-SP). It showed a reduction in the neurotoxic properties of HIV-gp120 and Tat in the presence of IFN-γ. EGCG also involves numerous viral-mediated inflammatory cascades, such as JAK/STAT. Nonetheless, it also inhibits the Epstein-Barr virus replication protein (Zta and Rta). Moreover, it also impedes certain viruses (influenza A and B strains) by hijacking the endosomal and lysosomal compartments. Therefore, the current article aims to describe the importance of EGCG in numerous neurological diseases and its inhibitory effect against neurotropic viruses.
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Affiliation(s)
- Annu Rani
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, 453552, Indore India
| | - Vaishali Saini
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, 453552, Indore India
| | - Priyanka Patra
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, 453552, Indore India
| | - Tanish Prashar
- School of Biosciences and Technology, Vellore Institute of Technology, Vellore, 632014, Tamil Nadu India
| | - Rajan Kumar Pandey
- Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Stockholm, Sweden
| | - Amit Mishra
- Cellular and Molecular Neurobiology Unit, Indian Institute of Technology Jodhpur, Karwar, 342030, Jodhpur India
| | - Hem Chandra Jha
- Department of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Simrol, 453552, Indore India
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Tan H, Gong Y, Liu Y, Long J, Luo Q, Faleti OD, Lyu X. Advancing therapeutic strategies for Epstein-Barr virus-associated malignancies through lytic reactivation. Biomed Pharmacother 2023; 164:114916. [PMID: 37229802 DOI: 10.1016/j.biopha.2023.114916] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Revised: 05/17/2023] [Accepted: 05/18/2023] [Indexed: 05/27/2023] Open
Abstract
Epstein-Barr virus (EBV) is a widespread human herpes virus associated with lymphomas and epithelial cell cancers. It establishes two separate infection phases, latent and lytic, in the host. Upon infection of a new host cell, the virus activates several pathways, to induce the expression of lytic EBV antigens and the production of infectious virus particles. Although the carcinogenic role of latent EBV infection has been established, recent research suggests that lytic reactivation also plays a significant role in carcinogenesis. In this review, we summarize the mechanism of EBV reactivation and recent findings about the role of viral lytic antigens in tumor formation. In addition, we discuss the treatment of EBV-associated tumors with lytic activators and the targets that may be therapeutically effective in the future.
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Affiliation(s)
- Haiqi Tan
- Department of Laboratory Medicine, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; The Third School of Clinical Medicine, Southern Medical University, Guangzhou 510630, China
| | - Yibing Gong
- Department of Laboratory Medicine, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; The Third School of Clinical Medicine, Southern Medical University, Guangzhou 510630, China
| | - Yi Liu
- Department of Laboratory Medicine, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; The Third School of Clinical Medicine, Southern Medical University, Guangzhou 510630, China
| | - Jingyi Long
- Department of Laboratory Medicine, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; The Third School of Clinical Medicine, Southern Medical University, Guangzhou 510630, China
| | - Qingshuang Luo
- Department of Laboratory Medicine, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; The Third School of Clinical Medicine, Southern Medical University, Guangzhou 510630, China
| | - Oluwasijibomi Damola Faleti
- Department of Laboratory Medicine, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; The Third School of Clinical Medicine, Southern Medical University, Guangzhou 510630, China; Department of Applied Biology and Chemical Technology, The Hong Kong Polytechnic University, 999000, Hong Kong Special Administrative Region of China
| | - Xiaoming Lyu
- Department of Laboratory Medicine, The Third Affiliated Hospital, Southern Medical University, Guangzhou 510630, China; The Third School of Clinical Medicine, Southern Medical University, Guangzhou 510630, China.
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6
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Awasthi P, Dwivedi M, Kumar D, Hasan S. Insights into intricacies of the Latent Membrane Protein-1 (LMP-1) in EBV-associated cancers. Life Sci 2023; 313:121261. [PMID: 36493876 DOI: 10.1016/j.lfs.2022.121261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2022] [Revised: 11/29/2022] [Accepted: 11/29/2022] [Indexed: 12/12/2022]
Abstract
Numerous lymphomas, carcinomas, and other disorders have been associated with Epstein-Barr Virus (EBV) infection. EBV's carcinogenic potential can be correlated to latent membrane protein 1 (LMP1), which is essential for fibroblast and primary lymphocyte transformation. LMP1, a transmembrane protein with constitutive activity, belongs to the tumour necrosis factor receptor (TNFR) superfamily. LMP1 performs number of role in the life cycle of EBV and the pathogenesis by interfering with, reprogramming, and influencing a vast range of host cellular activities and functions that are getting well-known but still poorly understood. LMP1, pleiotropically perturbs, reprograms and balances a wide range of various processes of cell such as extracellular vesicles, epigenetics, ubiquitin machinery, metabolism, cell proliferation and survival, and also promotes oncogenic transformation, angiogenesis, anchorage-independent cell growth, metastasis and invasion, tumour microenvironment. By the help of various experiments, it is proven that EBV-encoded LMP1 activates multiple cell signalling pathways which affect antigen presentation, cell-cell interactions, chemokine and cytokine production. Therefore, it is assumed that LMP1 may perform majorly in EBV associated malignancies. For the development of novel techniques toward targeted therapeutic applications, it is essential to have a complete understanding of the LMP1 signalling landscape in order to identify potential targets. The focus of this review is on LMP1-interacting proteins and related signalling processes. We further discuss tactics for using the LMP1 protein as a potential therapeutic for cancers caused by the EBV.
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Affiliation(s)
- Prankur Awasthi
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow 226028, India
| | - Manish Dwivedi
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow 226028, India
| | - Dhruv Kumar
- School of Health Sciences and Technology, UPES University Dehradun, Uttarakhand, India
| | - Saba Hasan
- Amity Institute of Biotechnology, Amity University Uttar Pradesh, Lucknow 226028, India.
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7
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Eladwy RA, Vu HT, Shah R, Li CG, Chang D, Bhuyan DJ. The Fight against the Carcinogenic Epstein-Barr Virus: Gut Microbiota, Natural Medicines, and Beyond. Int J Mol Sci 2023; 24:1716. [PMID: 36675232 PMCID: PMC9862477 DOI: 10.3390/ijms24021716] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Revised: 01/08/2023] [Accepted: 01/11/2023] [Indexed: 01/17/2023] Open
Abstract
Despite recent advances in oncology, cancer has remained an enormous global health burden, accounting for about 10 million deaths in 2020. A third of the cancer cases in developing counties are caused by microbial infections such as human papillomavirus (HPV), Epstein-Barr Virus (EBV), and hepatitis B and C viruses. EBV, a member of the human gamma herpesvirus family, is a double-stranded DNA virus and the primary cause of infectious mononucleosis. Most EBV infections cause no long-term complications. However, it was reported that EBV infection is responsible for around 200,000 malignancies worldwide every year. Currently, there are no vaccines or antiviral drugs for the prophylaxis or treatment of EBV infection. Recently, the gut microbiota has been investigated for its pivotal roles in pathogen protection and regulating metabolic, endocrine, and immune functions. Several studies have investigated the efficacy of antiviral agents, gut microbial metabolites, and natural products against EBV infection. In this review, we aim to summarise and analyse the reported molecular mechanistic and clinical studies on the activities of gut microbial metabolites and natural medicines against carcinogenic viruses, with a particular emphasis on EBV. Gut microbial metabolites such as short-chain fatty acids were reported to activate the EBV lytic cycle, while bacteriocins, produced by Enterococcus durans strains, have shown antiviral properties. Furthermore, several natural products and dietary bioactive compounds, such as curcumin, epigallocatechin gallate, resveratrol, moronic acid, and andrographolide, have shown antiviral activity against EBV. In this review, we proposed several exciting future directions for research on carcinogenic viruses.
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Affiliation(s)
- Radwa A. Eladwy
- NICM Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia
| | - Hang Thi Vu
- Faculty of Food Science and Technology, Vietnam National University of Agriculture, Trau Quy, Gia Lam, Hanoi 100000, Vietnam
| | - Ravi Shah
- NICM Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia
| | - Chun Guang Li
- NICM Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia
| | - Dennis Chang
- NICM Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia
| | - Deep Jyoti Bhuyan
- NICM Health Research Institute, Western Sydney University, Penrith, NSW 2751, Australia
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Hassan STS, Šudomová M. Molecular Mechanisms of Flavonoids against Tumor Gamma-Herpesviruses and Their Correlated Cancers-A Focus on EBV and KSHV Life Cycles and Carcinogenesis. Int J Mol Sci 2022; 24:ijms24010247. [PMID: 36613688 PMCID: PMC9820319 DOI: 10.3390/ijms24010247] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2022] [Revised: 12/12/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Epstein-Barr virus (EBV) and Kaposi sarcoma-associated herpesvirus (KSHV) are cancer-causing viruses that belong to human gamma-herpesviruses. They are DNA viruses known to establish lifelong infections in humans, with the ability to develop various types of cancer. Drug resistance remains the main barrier to achieving effective therapies for viral infections and cancer. Thus, new medications with dual antiviral and anticancer actions are highly needed. Flavonoids are secondary metabolites biosynthesized by plants with diverse therapeutic effects on human health. In this review, we feature the potential role of flavonoids (flavones, protoflavones, isoflavones, flavanones, flavonols, dihydroflavonols, catechins, chalcones, anthocyanins, and other flavonoid-type compounds) in controlling gamma-herpesvirus-associated cancers by blocking EBV and KSHV infections and inhibiting the formation and growth of the correlated tumors, such as nasopharyngeal carcinoma, Burkitt's lymphoma, gastric cancer, extranodal NK/T-cell lymphoma, squamous cell carcinoma, Kaposi sarcoma, and primary effusion lymphoma. The underlying mechanisms via targeting EBV and KSHV life cycles and carcinogenesis are highlighted. Moreover, the effective concentrations or doses are emphasized.
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Affiliation(s)
- Sherif T. S. Hassan
- Department of Applied Ecology, Faculty of Environmental Sciences, Czech University of Life Sciences Prague, Kamýcká 129, 165 00 Prague, Czech Republic
- Correspondence:
| | - Miroslava Šudomová
- Museum of Literature in Moravia, Klášter 1, 664 61 Rajhrad, Czech Republic
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9
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Tale of Viruses in Male Infertility. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2022; 1358:275-323. [PMID: 35641875 DOI: 10.1007/978-3-030-89340-8_13] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Male infertility is a condition where the males either become sterile or critically infertile. The World Health Organisation assessed that approximately 9% of the couple have fertility issues where the contribution of the male partner was estimated to be 50%. There are several factors that can amalgamate to give rise to male infertility. Among them are lifestyle factors, genetic factors and as well as several environmental factors. The causes of male infertility may be acquired, congenital or sometimes idiopathic. All these factors adversely affect the spermatogenesis process as well as they impart serious threats to male genital organs thus resulting in infertility. Viruses are submicroscopic pathogenic agents that rely on host for their replication and survival. They enter the host cell, hijack the host cell machinery to aid their own replication and exit the cell for a new round of infection. With the growing abundance of different types of viruses and the havoc they have stirred in the form of pandemics, it is very essential to decipher their route of entry inside the human body and understand their diverse functional roles in order to combat them. In this chapter, we will review how viruses invade the male genital system thus in turn leading to detrimental consequence on male fertility. We will discuss the tropism of various viruses in the male genital organs and explore their sexual transmissibility. This chapter will summarise the functional and mechanistic approaches employed by the viruses in inducing oxidative stress inside spermatozoa thus leading to male infertility. Moreover, we will also highlight the various antiviral therapies that have been studied so far in order to ameliorate viral infection in order to combat the harmful consequences leading to male infertility.
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Nanotechnology Applications of Flavonoids for Viral Diseases. Pharmaceutics 2021; 13:pharmaceutics13111895. [PMID: 34834309 PMCID: PMC8625292 DOI: 10.3390/pharmaceutics13111895] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2021] [Revised: 10/14/2021] [Accepted: 11/01/2021] [Indexed: 12/14/2022] Open
Abstract
Recent years have witnessed the emergence of several viral diseases, including various zoonotic diseases such as the current pandemic caused by the Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2). Other viruses, which possess pandemic-causing potential include avian flu, Ebola, dengue, Zika, and Nipah virus, as well as the re-emergence of SARS (Severe Acute Respiratory Syndrome) and MERS (Middle East Respiratory Syndrome) coronaviruses. Notably, effective drugs or vaccines against these viruses are still to be discovered. All the newly approved vaccines against the SARS-CoV-2-induced disease COVID-19 possess real-time possibility of becoming obsolete because of the development of ‘variants of concern’. Flavonoids are being increasingly recognized as prophylactic and therapeutic agents against emerging and old viral diseases. Around 10,000 natural flavonoid compounds have been identified, being phytochemicals, all plant-based. Flavonoids have been reported to have lesser side effects than conventional anti-viral agents and are effective against more viral diseases than currently used anti-virals. Despite their abundance in plants, which are a part of human diet, flavonoids have the problem of low bioavailability. Various attempts are in progress to increase the bioavailability of flavonoids, one of the promising fields being nanotechnology. This review is a narrative of some anti-viral dietary flavonoids, their bioavailability, and various means with an emphasis on the nanotechnology system(s) being experimented with to deliver anti-viral flavonoids, whose systems show potential in the efficient delivery of flavonoids, resulting in increased bioavailability.
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Bimonte S, Forte CA, Cuomo M, Esposito G, Cascella M, Cuomo A. An Overview on the Potential Roles of EGCG in the Treatment of COVID-19 Infection. Drug Des Devel Ther 2021; 15:4447-4454. [PMID: 34737551 PMCID: PMC8560077 DOI: 10.2147/dddt.s314666] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Accepted: 08/05/2021] [Indexed: 01/18/2023] Open
Abstract
Coronavirus disease-19 (COVID-19) pandemic is currently ongoing worldwide and causes a lot of deaths in many countries. Although different vaccines for the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection have been developed and are now available, there are no effective antiviral drugs to treat the disease, except for Remdesivir authorized by the US FDA to counteract the emergency. Thus, it can be useful to find alternative therapies based on the employment of natural compounds, with antiviral features, to circumvent SARS-CoV-2 infection. Pre-clinical studies highlighted the antiviral activities of epigallocatechin-3-gallate (EGCG), a catechin primarily found in green tea, against various viruses, including SARS-CoV-2. In this review, we summarize this experimental evidence and highlight the potential use of EGCG as an alternative therapeutic choice for the treatment of SARS-CoV-2 infection.
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Affiliation(s)
- Sabrina Bimonte
- Division of Anesthesia and Pain Medicine, Istituto Nazionale Tumori - IRCCS - Fondazione G. Pascale, Naples, Italy
| | - Cira Antonietta Forte
- Division of Anesthesia and Pain Medicine, Istituto Nazionale Tumori - IRCCS - Fondazione G. Pascale, Naples, Italy
| | - Massimiliano Cuomo
- S.C. Project Management e Formazione, Istituto Nazionale Tumori - IRCCS - Fondazione G. Pascale, Naples, Italy
| | - Gennaro Esposito
- Division of Anesthesia and Pain Medicine, Istituto Nazionale Tumori - IRCCS - Fondazione G. Pascale, Naples, Italy
| | - Marco Cascella
- Division of Anesthesia and Pain Medicine, Istituto Nazionale Tumori - IRCCS - Fondazione G. Pascale, Naples, Italy
| | - Arturo Cuomo
- Division of Anesthesia and Pain Medicine, Istituto Nazionale Tumori - IRCCS - Fondazione G. Pascale, Naples, Italy
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Ruchawapol C, Yuan M, Wang SM, Fu WW, Xu HX. Natural Products and Their Derivatives against Human Herpesvirus Infection. Molecules 2021; 26:6290. [PMID: 34684870 PMCID: PMC8541008 DOI: 10.3390/molecules26206290] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2021] [Revised: 10/13/2021] [Accepted: 10/14/2021] [Indexed: 02/06/2023] Open
Abstract
Herpesviruses establish long-term latent infection for the life of the host and are known to cause numerous diseases. The prevalence of viral infection is significantly increased and causes a worldwide challenge in terms of health issues due to drug resistance. Prolonged treatment with conventional antiviral drugs is more likely to develop drug-resistant strains due to mutations of thymidine nucleoside kinase or DNA polymerase. Hence, the development of alternative treatments is clearly required. Natural products and their derivatives have played a significant role in treating herpesvirus infection rather than nucleoside analogs in drug-resistant strains with minimal undesirable effects and different mechanisms of action. Numerous plants, animals, fungi, and bacteria-derived compounds have been proved to be efficient and safe for treating human herpesvirus infection. This review covers the natural antiherpetic agents with the chemical structural class of alkaloids, flavonoids, terpenoids, polyphenols, anthraquinones, anthracyclines, and miscellaneous compounds, and their antiviral mechanisms have been summarized. This review would be helpful to get a better grasp of anti-herpesvirus activity of natural products and their derivatives, and to evaluate the feasibility of natural compounds as an alternative therapy against herpesvirus infections in humans.
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Affiliation(s)
- Chattarin Ruchawapol
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Cai Lun Lu 1200, Shanghai 201203, China; (C.R.); (M.Y.); (S.-M.W.)
- Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Man Yuan
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Cai Lun Lu 1200, Shanghai 201203, China; (C.R.); (M.Y.); (S.-M.W.)
- Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Si-Min Wang
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Cai Lun Lu 1200, Shanghai 201203, China; (C.R.); (M.Y.); (S.-M.W.)
| | - Wen-Wei Fu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Cai Lun Lu 1200, Shanghai 201203, China; (C.R.); (M.Y.); (S.-M.W.)
- Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
| | - Hong-Xi Xu
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Cai Lun Lu 1200, Shanghai 201203, China; (C.R.); (M.Y.); (S.-M.W.)
- Engineering Research Centre of Shanghai Colleges for TCM New Drug Discovery, Shanghai 201203, China
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13
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The JAK2 inhibitor TG101209 exhibits anti-tumor and chemotherapeutic sensitizing effects on Burkitt lymphoma cells by inhibiting the JAK2/STAT3/c-MYB signaling axis. Cell Death Discov 2021; 7:268. [PMID: 34588425 PMCID: PMC8481535 DOI: 10.1038/s41420-021-00655-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2021] [Revised: 08/18/2021] [Accepted: 09/09/2021] [Indexed: 11/30/2022] Open
Abstract
Constitutive activation of JAK2/STAT3 is a major oncogenic signaling event involved in the development of Burkitt lymphoma (BL). In the present study, we investigated the antilymphoma activity of TG101209, a specific JAK2 inhibitor, on EBV-positive and EBV-negative Burkitt lymphoma cell lines and primary BL cells. The results showed that TG101209 had a significant antilymphoma effect by inhibiting BL cell growth and inducing apoptosis along with cell differentiation toward mature B cells in vitro. We also found that TG101209 displayed significant synergistic action and a sensitizing effect on the anti-Burkitt lymphoma activity of doxorubicin. In vivo experiments indicated that TG101209 could suppress tumor growth and prolong the overall survival of BL cell-bearing mice. The mechanistic study indicated that TG101209, by suppressing the JAK2/STAT3/c-MYB signaling axis and crosstalk between the downstream signaling pathways, plays an antilymphoma role. These data suggested that TG101209 may be a promising agent or alternative choice for the treatment of BL.
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14
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Wang YQ, Li QS, Zheng XQ, Lu JL, Liang YR. Antiviral Effects of Green Tea EGCG and Its Potential Application against COVID-19. Molecules 2021; 26:molecules26133962. [PMID: 34209485 PMCID: PMC8271719 DOI: 10.3390/molecules26133962] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2021] [Revised: 06/23/2021] [Accepted: 06/25/2021] [Indexed: 12/14/2022] Open
Abstract
(–)-Epigallocatechin-3-O-gallate (EGCG), the most abundant component of catechins in tea (Camellia sinensis (L.) O. Kuntze), plays a role against viruses through inhibiting virus invasiveness, restraining gene expression and replication. In this paper, the antiviral effects of EGCG on various viruses, including DNA virus, RNA virus, coronavirus, enterovirus and arbovirus, were reviewed. Meanwhile, the antiviral effects of the EGCG epi-isomer counterpart (+)-gallocatechin-3-O-gallate (GCG) were also discussed.
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Affiliation(s)
- Ying-Qi Wang
- Tea Research Institute, Zhejiang University, Hangzhou 310058, China; (Y.-Q.W.); (X.-Q.Z.)
| | - Qing-Sheng Li
- Institute of Sericulture and Tea, Zhejiang Academy of Agricultural Sciences, Hangzhou 310000, China;
| | - Xin-Qiang Zheng
- Tea Research Institute, Zhejiang University, Hangzhou 310058, China; (Y.-Q.W.); (X.-Q.Z.)
| | - Jian-Liang Lu
- Tea Research Institute, Zhejiang University, Hangzhou 310058, China; (Y.-Q.W.); (X.-Q.Z.)
- Correspondence: (J.-L.L.); (Y.-R.L.)
| | - Yue-Rong Liang
- Tea Research Institute, Zhejiang University, Hangzhou 310058, China; (Y.-Q.W.); (X.-Q.Z.)
- Correspondence: (J.-L.L.); (Y.-R.L.)
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15
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Inflammasome, the Constitutive Heterochromatin Machinery, and Replication of an Oncogenic Herpesvirus. Viruses 2021; 13:v13050846. [PMID: 34066537 PMCID: PMC8148530 DOI: 10.3390/v13050846] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2021] [Revised: 05/01/2021] [Accepted: 05/03/2021] [Indexed: 02/07/2023] Open
Abstract
The success of long-term host–virus partnerships is predicated on the ability of the host to limit the destructive potential of the virus and the virus’s skill in manipulating its host to persist undetected yet replicate efficiently when needed. By mastering such skills, herpesviruses persist silently in their hosts, though perturbations in this host–virus equilibrium can result in disease. The heterochromatin machinery that tightly regulates endogenous retroviral elements and pericentromeric repeats also silences invading genomes of alpha-, beta-, and gammaherpesviruses. That said, how these viruses disrupt this constitutive heterochromatin machinery to replicate and spread, particularly in response to disparate lytic triggers, is unclear. Here, we review how the cancer-causing gammaherpesvirus Epstein–Barr virus (EBV) uses the inflammasome as a security system to alert itself of threats to its cellular home as well as to flip the virus-encoded lytic switch, allowing it to replicate and escape in response to a variety of lytic triggers. EBV provides the first example of an infectious agent able to actively exploit the inflammasome to spark its replication. Revealing an unexpected link between the inflammasome and the epigenome, this further brings insights into how the heterochromatin machinery uses differential strategies to maintain the integrity of the cellular genome whilst guarding against invading pathogens. These recent insights into EBV biology and host–viral epigenetic regulation ultimately point to the NLRP3 inflammasome as an attractive target to thwart herpesvirus reactivation.
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16
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Henss L, Auste A, Schürmann C, Schmidt C, von Rhein C, Mühlebach MD, Schnierle BS. The green tea catechin epigallocatechin gallate inhibits SARS-CoV-2 infection. J Gen Virol 2021; 102:001574. [PMID: 33830908 PMCID: PMC8290267 DOI: 10.1099/jgv.0.001574] [Citation(s) in RCA: 77] [Impact Index Per Article: 25.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Accepted: 02/17/2021] [Indexed: 12/15/2022] Open
Abstract
The severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) infection has caused a pandemic with tens of millions of cases and more than a million deaths. The infection causes COVID-19, a disease of the respiratory system of divergent severity. No treatment exists. Epigallocatechin-3-gallate (EGCG), the major component of green tea, has several beneficial properties, including antiviral activities. Therefore, we examined whether EGCG has antiviral activity against SARS-CoV-2. EGCG blocked not only the entry of SARS-CoV-2, but also MERS- and SARS-CoV pseudotyped lentiviral vectors and inhibited virus infections in vitro. Mechanistically, inhibition of the SARS-CoV-2 spike-receptor interaction was observed. Thus, EGCG might be suitable for use as a lead structure to develop more effective anti-COVID-19 drugs.
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Affiliation(s)
- Lisa Henss
- Department of Virology, Paul-Ehrlich-Institut, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany
| | - Arne Auste
- Department of Veterinary Medicine, Paul-Ehrlich-Institut, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany
- German Center for Infection Research, Gießen-Marburg-Langen, Germany
| | - Christoph Schürmann
- Department of Veterinary Medicine, Paul-Ehrlich-Institut, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany
| | - Christin Schmidt
- Department of Virology, Paul-Ehrlich-Institut, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany
| | - Christine von Rhein
- Department of Virology, Paul-Ehrlich-Institut, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany
| | - Michael D. Mühlebach
- Department of Veterinary Medicine, Paul-Ehrlich-Institut, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany
- German Center for Infection Research, Gießen-Marburg-Langen, Germany
| | - Barbara S. Schnierle
- Department of Virology, Paul-Ehrlich-Institut, Paul-Ehrlich Strasse 51-59, 63225 Langen, Germany
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17
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Asha K, Sharma-Walia N. Targeting Host Cellular Factors as a Strategy of Therapeutic Intervention for Herpesvirus Infections. Front Cell Infect Microbiol 2021; 11:603309. [PMID: 33816328 PMCID: PMC8017445 DOI: 10.3389/fcimb.2021.603309] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2020] [Accepted: 01/12/2021] [Indexed: 12/13/2022] Open
Abstract
Herpesviruses utilize various host factors to establish latent infection, survival, and spread disease in the host. These factors include host cellular machinery, host proteins, gene expression, multiple transcription factors, cellular signal pathways, immune cell activation, transcription factors, cytokines, angiogenesis, invasion, and factors promoting metastasis. The knowledge and understanding of host genes, protein products, and biochemical pathways lead to discovering safe and effective antivirals to prevent viral reactivation and spread infection. Here, we focus on the contribution of pro-inflammatory, anti-inflammatory, and resolution lipid metabolites of the arachidonic acid (AA) pathway in the lifecycle of herpesvirus infections. We discuss how various herpesviruses utilize these lipid pathways to their advantage and how we target them to combat herpesvirus infection. We also summarize recent development in anti-herpesvirus therapeutics and new strategies proposed or under clinical trials. These anti-herpesvirus therapeutics include inhibitors blocking viral life cycle events, engineered anticancer agents, epigenome influencing factors, immunomodulators, and therapeutic compounds from natural extracts.
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Affiliation(s)
| | - Neelam Sharma-Walia
- H. M. Bligh Cancer Research Laboratories, Department of Microbiology and Immunology, Chicago Medical School, Rosalind Franklin University of Medicine and Science, North Chicago, IL, United States
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18
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Li H, Li Y, Hu J, Liu S, Luo X, Tang M, Bode AM, Dong Z, Liu X, Liao W, Cao Y. (-)-Epigallocatechin-3-gallate inhibits EBV lytic replication via targeting LMP1-mediated MAPK signal axes. Oncol Res 2021; 28:763-778. [PMID: 33629943 PMCID: PMC8420900 DOI: 10.3727/096504021x16135618512563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
Abstract
Epstein–Barr virus (EBV)-encoded latent membrane protein 1 (LMP1) plays an important oncogenic role in the viral latent infection. Recently, increasing evidence indicates that the high expression of LMP1 during EBV lytic cycle is related to the viral lytic replication. However, the mechanism by which LMP1 regulates EBV lytic replication remains unclear. (−)-Epigallocatechin-3-gallate (EGCG) prevents carcinogenesis by directly targeting numerous membrane proteins and effectively inhibits EBV lytic cascade. Here, we demonstrated that LMP1 promotes EBV lytic replication through the downstream signal molecules MAPKs, including ERKs, p38, and JNKs. LMP1 induces the phosphorylation of p53 through MAPKs to enhance the ability of wild-type p53 (wt-p53) to activate expression of BZLF1 gene, while the JNKs/c-Jun signal axis appears to be involved in EBV lytic replication induced by LMP1 in p53 mutant manner. We provided the first evidence that EGCG directly targets the viral membrane LMP1 (Kd = 0.36 μM, n = 1) using fluorescence quenching, isothermal titration calorimetry (ITC) assay, and CNBR-activated Sepharose 4B pull-down affinity chromatography. Furthermore, we revealed that EGCG inhibits EBV lytic replication via suppressing LMP1 and thus blocking the downstream MAPKs/wt-p53 signal axis in AGS-EBV cells and JNKs/c-Jun signal axis in p53 mutant B95.8 cells. Our study, for the first time, reports the binding and inhibitory efficacy of EGCG to the LMP1, which is a key oncoprotein encoded by EBV. These findings suggest the novel function of LMP1 in the regulation of EBV lytic cycle and reveal the new role of EGCG in EBV-associated malignancies through suppressing viral reactivation.
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Affiliation(s)
- Hongde Li
- Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Yueshuo Li
- Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China.,Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, China
| | - Jianmin Hu
- Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China.,Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, China
| | - Sufang Liu
- Division of Hematology, Institute of Molecular Hematology, the Second Xiangya 13 Hospital, Central South University at Changsha, China
| | - Xiangjian Luo
- Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China.,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, China.,The Hormel Institute, University of Minnesota, Austin, MN 55912, USA
| | - Min Tang
- Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China.,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, China
| | - Ann M Bode
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA
| | - Zigang Dong
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA.,College of Medicine, Zhengzhou University, Zhengzhou, China
| | - Xinqi Liu
- State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University at Tianjin, China
| | - Weihua Liao
- Department of Radiology, Xiangya Hospital, Central South University at Changsha, China
| | - Ya Cao
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, Changsha, China.,Molecular Imaging Research Center of Central South University, Changsha, China.,Research Center for Technologies of Nucleic Acid Based Diagnostics and Therapeutics, Hunan Province, Changsha, China.,National Joint Engineering Research Center for Genetic Diagnostics of Infectious Diseases and Cancer, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
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19
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Jakhmola S, Hazarika Z, Jha AN, Jha HC. In silico analysis of antiviral phytochemicals efficacy against Epstein-Barr virus glycoprotein H. J Biomol Struct Dyn 2021; 40:5372-5385. [PMID: 33438528 DOI: 10.1080/07391102.2020.1871074] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Epstein-Barr virus is a tumor-associated, enveloped virus with glycoprotein receptor gHgL on its surface. gH attaches to epithelial or B cells and mediates internalization. Till date, no specific anti-EBV FDA approved drug is available. Targeting gH may aid in designing virus-specific therapeutics and reducing the drug induced complications in host. We investigated the influence of antiviral phytochemicals on gH using computational approaches. Through molecular docking, we performed binding energy analysis of cellocidin, bruceantin, EGCG, formononetin and sesquiterpene lactones with gH DII/DIII interface, crucial for gH functions. Further, to cause any perturbations in the protein function, the molecules must bind stably to gH. Bruceantin and EGCG interacted with high affinities to gH. Simulation of these two molecules revealed stable binding with gH throughout 100 ns moreover, van der Waal interactions stabilized overall binding. Mutation of amino acids like V265, L269, L315, I423, I459, L474 and F475 involved in stable binding to gH was predicted deleterious to protein function. We obtained no difference in RMSD between these two ligands and minor deviations in the RMSF were noticed compared to gH. Conclusively, our study provided insights into the potential of bruceantin and EGCG to target gH. Different amino acids are involved in binding of each ligand to gH, engagement of certain amino acids may affect the virus binding with epithelial or B cells. The interaction of the ligand with gH may trap it in its native conformation or induce structural flexibility thereby inhibiting the interaction with host receptors or other glycoproteins.Communicated by Ramaswamy H. Sarma.
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Affiliation(s)
- Shweta Jakhmola
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
| | - Zaved Hazarika
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, India
| | - Anupam Nath Jha
- Department of Molecular Biology and Biotechnology, Tezpur University, Tezpur, India
| | - Hem Chandra Jha
- Discipline of Biosciences and Biomedical Engineering, Indian Institute of Technology Indore, Indore, India
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20
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Cao Y, Xie L, Shi F, Tang M, Li Y, Hu J, Zhao L, Zhao L, Yu X, Luo X, Liao W, Bode AM. Targeting the signaling in Epstein-Barr virus-associated diseases: mechanism, regulation, and clinical study. Signal Transduct Target Ther 2021; 6:15. [PMID: 33436584 PMCID: PMC7801793 DOI: 10.1038/s41392-020-00376-4] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Revised: 09/30/2020] [Accepted: 10/15/2020] [Indexed: 12/11/2022] Open
Abstract
Epstein–Barr virus-associated diseases are important global health concerns. As a group I carcinogen, EBV accounts for 1.5% of human malignances, including both epithelial- and lymphatic-originated tumors. Moreover, EBV plays an etiological and pathogenic role in a number of non-neoplastic diseases, and is even involved in multiple autoimmune diseases (SADs). In this review, we summarize and discuss some recent exciting discoveries in EBV research area, which including DNA methylation alterations, metabolic reprogramming, the changes of mitochondria and ubiquitin-proteasome system (UPS), oxidative stress and EBV lytic reactivation, variations in non-coding RNA (ncRNA), radiochemotherapy and immunotherapy. Understanding and learning from this advancement will further confirm the far-reaching and future value of therapeutic strategies in EBV-associated diseases.
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Affiliation(s)
- Ya Cao
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China. .,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, 410078, Changsha, China. .,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, 410078, Changsha, China. .,Research Center for Technologies of Nucleic Acid-Based Diagnostics and Therapeutics Hunan Province, 410078, Changsha, China. .,Molecular Imaging Research Center of Central South University, 410008, Changsha, Hunan, China. .,National Joint Engineering Research Center for Genetic Diagnostics of Infectious Diseases and Cancer, 410078, Changsha, China. .,Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China.
| | - Longlong Xie
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China.,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, 410078, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, 410078, Changsha, China
| | - Feng Shi
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China.,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, 410078, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, 410078, Changsha, China
| | - Min Tang
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China.,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, 410078, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, 410078, Changsha, China.,Molecular Imaging Research Center of Central South University, 410008, Changsha, Hunan, China
| | - Yueshuo Li
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China.,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, 410078, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, 410078, Changsha, China
| | - Jianmin Hu
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China.,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, 410078, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, 410078, Changsha, China
| | - Lin Zhao
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China.,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, 410078, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, 410078, Changsha, China
| | - Luqing Zhao
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China
| | - Xinfang Yu
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China.,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, 410078, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, 410078, Changsha, China
| | - Xiangjian Luo
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China.,Cancer Research Institute and School of Basic Medical Science, Xiangya School of Medicine, Central South University, 410078, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, 410078, Changsha, China.,Molecular Imaging Research Center of Central South University, 410008, Changsha, Hunan, China
| | - Weihua Liao
- Department of Radiology, Xiangya Hospital, Central South University, 410078, Changsha, China
| | - Ann M Bode
- The Hormel Institute, University of Minnesota, Austin, MN, 55912, USA
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21
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Feng R, Chang ET, Liu Q, Cai Y, Zhang Z, Chen G, Huang QH, Xie SH, Cao SM, Zhang Y, Yun JP, Jia WH, Zheng Y, Liao J, Chen Y, Huang T, Lin L, Ernberg I, Huang G, Zeng YX, Adami HO, Ye W. Intake of Alcohol and Tea and Risk of Nasopharyngeal Carcinoma: A Population-Based Case-Control Study in Southern China. Cancer Epidemiol Biomarkers Prev 2020; 30:545-553. [PMID: 33303643 DOI: 10.1158/1055-9965.epi-20-1244] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/16/2020] [Accepted: 12/07/2020] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The potential effect of alcohol or tea intake on the risk of nasopharyngeal carcinoma (NPC) remains controversial. METHODS In a population-based case-control study in southern China, we assessed alcohol or tea intake from 2,441 histopathologically confirmed NPC cases and 2,546 controls. We calculated mean daily ethanol (g/day) and tea intake (mL/day). Fully adjusted ORs with 95% confidence intervals (CI) were estimated using logistic regression; potential dose-response trends were evaluated using restricted cubic spline analysis. RESULTS Compared with nondrinkers, no significantly increased NPC risk in men was observed among current alcohol drinkers overall (OR, 1.08; 95% CI, 0.93-1.25), nor among current heavy drinkers (OR for ≥90 g/day ethanol vs. none, 1.32; 95% CI, 0.95-1.84) or former alcohol drinkers. Current tea drinking was associated with a decreased NPC risk (OR, 0.73; 95% CI, 0.64-0.84). Compared with never drinkers, those with the low first three quintiles of mean daily current intake of tea were at significantly lower NPC risk (OR, 0.53, 0.68, and 0.65, respectively), but not significant for the next two quintiles. Current daily tea intake had a significant nonlinear dose-response relation with NPC risk. CONCLUSIONS Our study suggests no significant association between alcohol and NPC risk. Tea drinking may moderately reduce NPC risk, but the lack of a monotonic dose-response association complicates causal inference. IMPACT Tea drinking might be a healthy habit for preventing NPC. More studies on biological mechanisms that may link tea with NPC risk are needed.
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Affiliation(s)
- Ruimei Feng
- Department of Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, China.,State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine and Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Epidemiology and Health Statistics and Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China
| | - Ellen T Chang
- Department of Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, China.,Exponent, Inc., Center for Health Sciences, Menlo Park, California.,Stanford Cancer Institute, Stanford, California
| | - Qing Liu
- Department of Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, China.,State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine and Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yonglin Cai
- Department of Clinical Laboratory, Wuzhou Red Cross Hospital, Wuzhou, China.,Wuzhou Health System Key Laboratory for Nasopharyngeal Carcinoma Etiology and Molecular Mechanism, Wuzhou, China
| | - Zhe Zhang
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Key Laboratory of High-Incidence-Tumor Prevention & Treatment (Guangxi Medical University), Ministry of Education, Nanning, China
| | - Guomin Chen
- State Key Laboratory for Infectious Diseases Prevention and Control, Institute for Viral Disease Control and Prevention, Chinese Center for Disease Control and Prevention, Beijing, China
| | | | - Shang-Hang Xie
- Department of Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, China.,State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine and Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Su-Mei Cao
- Department of Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, China.,State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine and Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yu Zhang
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine and Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Jing-Ping Yun
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine and Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Wei-Hua Jia
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine and Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China
| | - Yuming Zheng
- Department of Clinical Laboratory, Wuzhou Red Cross Hospital, Wuzhou, China.,Wuzhou Health System Key Laboratory for Nasopharyngeal Carcinoma Etiology and Molecular Mechanism, Wuzhou, China
| | - Jian Liao
- Cangwu Institute for Nasopharyngeal Carcinoma Control and Prevention, Wuzhou, China
| | - Yufeng Chen
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
| | - Tingting Huang
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Department of Radiation Oncology, First Affiliated Hospital of Guangxi Medical University, Nanning, China
| | - Longde Lin
- Key Laboratory of High-Incidence-Tumor Prevention & Treatment (Guangxi Medical University), Ministry of Education, Nanning, China
| | - Ingemar Ernberg
- Department of Microbiology, Tumor and Cell Biology, Karolinska Institutet, Stockholm, Sweden
| | - Guangwu Huang
- Department of Otolaryngology-Head & Neck Surgery, First Affiliated Hospital of Guangxi Medical University, Nanning, China.,Key Laboratory of High-Incidence-Tumor Prevention & Treatment (Guangxi Medical University), Ministry of Education, Nanning, China
| | - Yi-Xin Zeng
- State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine and Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China.,Beijing Hospital, Beijing, China
| | - Hans-Olov Adami
- Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden.,Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, Massachusetts.,Clinical Effectiveness Group, Institute of Health University of Oslo, Oslo, Norway
| | - Weimin Ye
- Department of Cancer Prevention Center, Sun Yat-sen University Cancer Center, Guangzhou, China. .,State Key Laboratory of Oncology in South China and Collaborative Innovation Center for Cancer Medicine and Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Sun Yat-sen University Cancer Center, Guangzhou, China.,Department of Epidemiology and Health Statistics and Key Laboratory of Ministry of Education for Gastrointestinal Cancer, Fujian Medical University, Fuzhou, China.,Department of Medical Epidemiology and Biostatistics, Karolinska Institutet, Stockholm, Sweden
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22
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Wang L, Song J, Liu A, Xiao B, Li S, Wen Z, Lu Y, Du G. Research Progress of the Antiviral Bioactivities of Natural Flavonoids. NATURAL PRODUCTS AND BIOPROSPECTING 2020; 10:271-283. [PMID: 32948973 PMCID: PMC7500501 DOI: 10.1007/s13659-020-00257-x] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 06/24/2020] [Indexed: 05/05/2023]
Abstract
Flavonoids are now considered as an indispensable component in a variety of nutraceutical and pharmaceutical applications. Most recent researches have focused on the health aspects of flavonoids for humans. Especially, different flavonoids have been investigated for their potential antiviral activities, and several natural flavonoids exhibited significant antiviral properties both in vitro and in vivo. This review provides a survey of the literature regarding the evidence for antiviral bioactivities of natural flavonoids, highlights the cellular and molecular mechanisms of natural flavonoids on viruses, and presents the details of most reported flavonoids. Meanwhile, future perspectives on therapeutic applications of flavonoids against viral infections were discussed.
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Affiliation(s)
- Lin Wang
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Junke Song
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Ailin Liu
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Bin Xiao
- Laboratory of Clinical Pharmacy, Ordos Central Hospital, Ordos School of Clinical Medicine, Inner Mongolia Medical University, Ordos, 017000, China
| | - Sha Li
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Zhang Wen
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Yang Lu
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China
| | - Guanhua Du
- Beijing Key Laboratory of Drug Targets Identification and Drug Screening, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, 1 Xian Nong Tan Street, Beijing, 100050, China.
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23
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Lin HL, Qin YJ, Zhang YL, Zhang YQ, Chen YL, Niu YY, Pang CP, Chu WK, Zhang HY. Epigallocatechin-3-gallate (EGCG) inhibits myofibroblast transformation of human Tenon's fibroblasts. Exp Eye Res 2020; 197:108119. [PMID: 32603658 DOI: 10.1016/j.exer.2020.108119] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/13/2020] [Accepted: 06/14/2020] [Indexed: 02/05/2023]
Abstract
Myofibroblast transformation of human Tenon's fibroblasts severely challenges the outcome of glaucoma filtration surgery. epigallocatechin-3-gallate (EGCG) is considered as a potential reagent to overcome this issue for its anti-fibrosis effect on various human diseases, but it is unclear on the fibrosis of Tenon's fibroblasts. This study was conducted to investigate the effect of EGCG on TGF-β1-induced myofibroblast transformation of human Tenon's fibroblasts. The human Tenon's fibroblasts were incubated in the medium containing 10 ng/mL TGF-β1, and subsequently treated with EGCG or mitomycin C (MMC). The cell proliferation and migration were analyzed. The expression of alpha-smooth muscle actin (α-SMA), type I collagen (Col-I), and p-Smad2/3 were also evaluated. It showed that EGCG and MMC strongly inhibited the elevation in cell number in tissue explants compared to the tissues treated with TGF-β1 alone. Scratch-Wound assay showed that 48 h after TGF-β1 induction, only 10% of the wound width remained. But cells treated with EGCG still showed over 93% wound width. Further, EGCG effectively inhibited TGF-β1-induced expression of α-SMA and Col-I as well as phosphorylation of Smad2/3 in Tenon's fibroblasts. Altogether, we concluded that EGCG suppressed the myofibroblast transformation in Tenon's fibroblasts through inactivating TGF-β1/Smad signaling. These findings demonstrate that EGCG can be considered as one of the possible antifibrotic reagents for preventing postoperative scarring in glaucoma filtration surgery.
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Affiliation(s)
- Hong-Liang Lin
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences. Guangzhou, China; Shantou University Medical College, Shantou, China
| | - Yong-Jie Qin
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences. Guangzhou, China
| | - Yu-Lin Zhang
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences. Guangzhou, China; Shantou University Medical College, Shantou, China
| | - Yu-Qiao Zhang
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences. Guangzhou, China; Shantou University Medical College, Shantou, China
| | - Yan-Lei Chen
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences. Guangzhou, China
| | - Yong-Yi Niu
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences. Guangzhou, China
| | - Chi-Pui Pang
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Wai-Kit Chu
- Department of Ophthalmology & Visual Sciences, The Chinese University of Hong Kong, Hong Kong, China
| | - Hong-Yang Zhang
- Department of Ophthalmology, Guangdong Eye Institute, Guangdong Provincial People's Hospital and Guangdong Academy of Medical Sciences. Guangzhou, China; The Second School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong, China.
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24
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He YQ, Liao XY, Xue WQ, Xu YF, Xu FH, Li FF, Li XZ, Zhang JB, Wang TM, Wang F, Yu HL, Feng QS, Chen LZ, Cao SM, Liu Q, Mu J, Jia WH. Association Between Environmental Factors and Oral Epstein-Barr Virus DNA Loads: A Multicenter Cross-sectional Study in China. J Infect Dis 2019; 219:400-409. [PMID: 30307559 DOI: 10.1093/infdis/jiy542] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 10/08/2018] [Indexed: 12/14/2022] Open
Abstract
Background Oral Epstein-Barr virus (EBV) status reflects host EBV activity and potentially links to EBV-associated diseases, however, factors influencing oral EBV loads or reactivation, such as environmental exposures or host factors, are not fully understood. Methods A 2-stage, multicenter, cross-sectional study of 6558 subjects from 21 administrative cities of southern China and 3 populations from representative geographical areas in China (referred to as the south, north, and northeastern populations) was performed. The relationships between demographical factors and environmental exposures to EBV loads were analyzed by logistic regression models. Results Current smoking, with a dose-response effect, was found to be strongly associated with higher oral EBV loads in the pooled data, with an odds ratio of 1.58 (95% confidence interval, 1.39-1.79), as well as in each of the separate populations. The odds ratio increased to 3.06 when current smokers in southern China were compared to never smokers in northern China. Additionally, higher oral EBV loads tended to be detected in older participants, male participants, and participants in southern China. Conclusions This study provided evidence linking the effect of host-environmental factors, particularly smoking, to oral EBV activity. It could strengthen our understanding of the possible causal roles of EBV-related diseases, which may help to prevent or mitigate EBV-associated diseases.
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Affiliation(s)
- Yong-Qiao He
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Xiao-Yu Liao
- Department of Endocrinology, Xinqiao Hospital, Third Military Medical University, Chongqing
| | - Wen-Qiong Xue
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Ya-Fei Xu
- Shenzhen University Health Science Center, Shenzhen, China
| | - Feng-Hua Xu
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Fang-Fang Li
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Xi-Zhao Li
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Jiang-Bo Zhang
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Tong-Min Wang
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Fang Wang
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Huan-Lin Yu
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Qi-Sheng Feng
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Li-Zhen Chen
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Su-Mei Cao
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Qing Liu
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou
| | - Jianbing Mu
- Laboratory of Malaria and Vector Research, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Rockville, Maryland
| | - Wei-Hua Jia
- Sun Yat-sen University Cancer Center; State Key Laboratory of Oncology in South China, Guangzhou.,Collaborative Innovation Center for Cancer Medicine; Guangdong Key Laboratory of Nasopharyngeal Carcinoma Diagnosis and Therapy, Guangzhou.,School of Public Health, Sun Yat-Sen University, Guangzhou.,Cancer Center of Guangzhou Medical University, Guangzhou
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25
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Kerr JR. Epstein-Barr virus (EBV) reactivation and therapeutic inhibitors. J Clin Pathol 2019; 72:651-658. [DOI: 10.1136/jclinpath-2019-205822] [Citation(s) in RCA: 54] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2019] [Revised: 05/19/2019] [Accepted: 06/10/2019] [Indexed: 12/11/2022]
Abstract
Epstein-Barr virus (EBV) is a ubiquitous human virus which infects almost all humans during their lifetime and following the acute phase, persists for the remainder of the life of the individual. EBV infects B lymphocytes leading to their immortalisation, with persistence of the EBV genome as an episome. In the latent phase, EBV is prevented from reactivating through efficient cytotoxic cellular immunity. EBV reactivates (lytic phase) under conditions of psychological stress with consequent weakening of cellular immunity, and EBV reactivation has been shown to occur in a subset of individuals with each of a variety of cancers, autoimmune diseases, the autoimmune-like disease, chronic fatigue syndrome/myalgic encephalitis and under other circumstances such as being an inpatient in an intensive care unit. Chronic EBV reactivation is an important mechanism in the pathogenesis of many such diseases, yet is rarely tested for in immunocompetent individuals. This review summarises the pathogenesis of EBV infection, EBV reactivation and its role in disease, and methods which may be used to detect it. Known inhibitors of EBV reactivation and replication are discussed, including drugs licensed for treatment of other herpesviruses, licensed or experimental drugs for various other indications, compounds at an early stage of drug development and nutritional constituents such as vitamins and dietary supplements.
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26
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Ho HC, Huang CC, Lu YT, Yeh CM, Ho YT, Yang SF, Hsin CH, Lin CW. Epigallocatechin-3-gallate inhibits migration of human nasopharyngeal carcinoma cells by repressing MMP-2 expression. J Cell Physiol 2019; 234:20915-20924. [PMID: 31012106 DOI: 10.1002/jcp.28696] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2019] [Revised: 03/27/2019] [Accepted: 04/05/2019] [Indexed: 12/28/2022]
Abstract
Metastasis of the cancer cells to the regional lymph nodes parts of the body remains an important cause of treatment failure in nasopharyngeal carcinoma (NPC) patients. Epigallocatechin-3-gallate (EGCG), the most important ingredient in the green tea, has been reported to possess antioxidant and anticancer activities. However, the effects of EGCG on NPC cell metastasis are still unclear. In the present study, we examined the in vitro antimetastatic properties of EGCG on human NPC cells, NPC-39, HONE-1 and NPC-BM. The results revealed that EGCG considerably inhibited the migration abilities of three NPC cells. The matrix metalloproteinases-2 (MMP-2) activity and expression were also significantly inhibited by EGCG treatment. Furthermore, EGCG suppressed the phosphorylation of the Src signaling pathway. Moreover, blocking the Src pathway also inhibits MMP-2 expression and migration in the NPC cells. In conclusion, this study revealed that EGCG could inhibit the metastatic activity of human NPC cells by downregulating the protein expression of MMP-2 through modulation of the Src signaling pathway, suggesting that EGCG may be a potential candidate for chemoprevention of NPC.
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Affiliation(s)
- Hsu-Chueh Ho
- Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Cheng-Chen Huang
- Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yen-Ting Lu
- Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Otolaryngology, St. Martin De Porres Hospital, Chiayi, Taiwan
| | - Chia-Ming Yeh
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Yu-Ting Ho
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Shun-Fa Yang
- Institute of Medicine, Chung Shan Medical University, Taichung, Taiwan.,Department of Medical Research, Chung Shan Medical University Hospital, Taichung, Taiwan
| | - Chung-Han Hsin
- Department of Otolaryngology, Chung Shan Medical University Hospital, Taichung, Taiwan.,School of Medicine, Chung Shan Medical University, Taichung, Taiwan
| | - Chiao-Wen Lin
- Institute of Oral Sciences, Chung Shan Medical University, Taichung, Taiwan.,Department of Dentistry, Chung Shan Medical University Hospital, Taichung, Taiwan
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27
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Influence of Tea Consumption on the Development of Second Esophageal Neoplasm in Patients with Head and Neck Cancer. Cancers (Basel) 2019; 11:cancers11030387. [PMID: 30893904 PMCID: PMC6468666 DOI: 10.3390/cancers11030387] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2019] [Revised: 03/15/2019] [Accepted: 03/15/2019] [Indexed: 12/24/2022] Open
Abstract
Alcohol is an important risk factor for the development of second esophageal squamous-cell carcinoma (ESCC) in head and neck squamous-cell carcinoma (HNSCC) patients. However, the influence of tea consumption is uncertain. We prospectively performed endoscopic screening in incident HNSCC patients to identify synchronous esophageal neoplasm. In total, 987 patients enrolled between October 2008 and December 2017 and were analyzed. In vitro studies were conducted to investigate the effect of epigallocatechin gallate (EGCG) on the betel alkaloid, arecoline-stimulated carcinogenesis in two ESCC cell lines. There were 151 patients (15.3%) diagnosed to have synchronous esophageal neoplasm, including 88 low-grade dysplasia, 30 high-grade dysplasia and 33 squamous-cell carcinoma (SCC). Tea consumption was associated with a significantly lower risk of having esophageal high-grade dysplasia or SCC in HNSCC patients, especially those who were betel nut chewers, alcohol drinkers or cigarette smokers (all adjusted odds ratio were 0.5; p-values: 0.045, 0.045 and 0.049 respectively). In vitro studies indicated that EGCG suppressed arecoline-induced ESCC cell proliferation and colony formation through the inhibition of the Akt and ERK1/2 pathway in a reactive oxygen species-independent manner. In conclusion, tea consumption may protect against the development of second esophageal neoplasms among HNSCC patients, especially those who regularly consume betel nuts, alcohol and cigarettes.
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28
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Novel Therapeutics for Epstein⁻Barr Virus. Molecules 2019; 24:molecules24050997. [PMID: 30871092 PMCID: PMC6429425 DOI: 10.3390/molecules24050997] [Citation(s) in RCA: 63] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2019] [Revised: 03/01/2019] [Accepted: 03/04/2019] [Indexed: 12/11/2022] Open
Abstract
Epstein–Barr virus (EBV) is a human γ-herpesvirus that infects up to 95% of the adult population. Primary EBV infection usually occurs during childhood and is generally asymptomatic, though the virus can cause infectious mononucleosis in 35–50% of the cases when infection occurs later in life. EBV infects mainly B-cells and epithelial cells, establishing latency in resting memory B-cells and possibly also in epithelial cells. EBV is recognized as an oncogenic virus but in immunocompetent hosts, EBV reactivation is controlled by the immune response preventing transformation in vivo. Under immunosuppression, regardless of the cause, the immune system can lose control of EBV replication, which may result in the appearance of neoplasms. The primary malignancies related to EBV are B-cell lymphomas and nasopharyngeal carcinoma, which reflects the primary cell targets of viral infection in vivo. Although a number of antivirals were proven to inhibit EBV replication in vitro, they had limited success in the clinic and to date no antiviral drug has been approved for the treatment of EBV infections. We review here the antiviral drugs that have been evaluated in the clinic to treat EBV infections and discuss novel molecules with anti-EBV activity under investigation as well as new strategies to treat EBV-related diseases.
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Xiao X, Jiang K, Xu Y, Peng H, Wang Z, Liu S, Zhang G. (-)-Epigallocatechin-3-gallate induces cell apoptosis in chronic myeloid leukaemia by regulating Bcr/Abl-mediated p38-MAPK/JNK and JAK2/STAT3/AKT signalling pathways. Clin Exp Pharmacol Physiol 2018; 46:126-136. [PMID: 30251267 DOI: 10.1111/1440-1681.13037] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2018] [Revised: 09/12/2018] [Accepted: 09/18/2018] [Indexed: 01/03/2023]
Abstract
Epigallocatechin-3-gallate (EGCG), a major polyphenolic constituent of green tea, possesses remarkable chemopreventive and therapeutic potential against various types of cancer, including leukaemia. However, the molecular mechanism involved in chronic myeloid leukaemia (CML), especially imatinib-resistant CML cells, is not completely understood. In the present study, we investigated the effect of EGCG on the growth of Bcr/Abl+ CML cell lines, including imatinib-resistant cell lines and primary CML cells. The results revealed that EGCG could inhibit cell growth and induce apoptosis in CML cells. The mechanisms involved inhibition of the Bcr/Abl oncoprotein and regulation of its downstream p38-MAPK/JNK and JAK2/STAT3/AKT pathways. In conclusion, we documented the anti-CML effects of EGCG in imatinib-sensitive and imatinib-resistant Bcr/Abl+ cells, especially T315I-mutated cells.
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Affiliation(s)
- Xiang Xiao
- Department of Rehabilitation, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Kaiming Jiang
- Department of Haematology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Yunxiao Xu
- Department of Haematology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Hongling Peng
- Department of Haematology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Zhihua Wang
- Department of Haematology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Sufang Liu
- Department of Haematology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Guangsen Zhang
- Department of Haematology, The Second Xiangya Hospital, Central South University, Changsha, China
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30
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Lai YH, Sun CP, Huang HC, Chen JC, Liu HK, Huang C. Epigallocatechin gallate inhibits hepatitis B virus infection in human liver chimeric mice. BMC COMPLEMENTARY AND ALTERNATIVE MEDICINE 2018; 18:248. [PMID: 30189898 PMCID: PMC6127945 DOI: 10.1186/s12906-018-2316-4] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/16/2018] [Accepted: 08/28/2018] [Indexed: 12/12/2022]
Abstract
Background Persistent hepatitis B virus (HBV) infection causes liver cirrhosis and hepatocellular carcinoma and constitutes a major worldwide health problem. Currently, anti-HBV drugs are limited to peginterferon and nucleos(t)ide analogs, which are costly and have considerable side effects; the development of novel, effective anti-HBV agents is crucial. Methods Catechins are a major group of compounds found in green tea extract and epigallocatechin gallate (EGCG) has been shown to have antiviral properties, including inhibition of cellular entry by HBV. FRG (Fah−/−/ Rag2−/−/ IL-2Rγ/−) mice were used in this study to generate chimeras carrying human primary hepatocytes, to facilitate investigation of the inhibitory effect of EGCG on HBV infection. Results Here, we show the inhibitory effect of EGCG on HBV infection and replication in HuS-E/2 cells. The inhibitory effect of EGCG on HBV infection in vivo was confirmed by monitoring HBV DNA and HBsAg in serum and immunostaining the liver tissues of the human liver chimeric mice. Conclusions The effects of EGCG suggest a robust strategy for the treatment of HBV infection and EGCG may have therapeutic potential for the treatment of HBV-associated liver diseases.
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31
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Green Tea Catechins: Their Use in Treating and Preventing Infectious Diseases. BIOMED RESEARCH INTERNATIONAL 2018; 2018:9105261. [PMID: 30105263 PMCID: PMC6076941 DOI: 10.1155/2018/9105261] [Citation(s) in RCA: 133] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 06/10/2018] [Indexed: 12/19/2022]
Abstract
Green tea is one of the most popular drinks consumed worldwide. Produced mainly in Asian countries from the leaves of the Camellia sinensis plant, the potential health benefits have been widely studied. Recently, researchers have studied the ability of green tea to eradicate infectious agents and the ability to actually prevent infections. The important components in green tea that show antimicrobial properties are the catechins. The four main catechins that occur in green tea are (-)-epicatechin (EC), (-)-epicatechin-3-gallate (ECG), (-)-epigallocatechin (EGC), and (-)-epigallocatechin-3-gallate (EGCG). Of these catechins, EGCG and EGC are found in the highest amounts in green tea and have been the subject of most of the studies. These catechins have been shown to demonstrate a variety of antimicrobial properties, both to organisms affected and in mechanisms used. Consumption of green tea has been shown to distribute these compounds and/or their metabolites throughout the body, which allows for not only the possibility of treatment of infections but also the prevention of infections.
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32
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Li J, He Y, Tan Z, Lu J, Li L, Song X, Shi F, Xie L, You S, Luo X, Li N, Li Y, Liu X, Tang M, Weng X, Yi W, Fan J, Zhou J, Qiang G, Qiu S, Wu W, Bode AM, Cao Y. Wild-type IDH2 promotes the Warburg effect and tumor growth through HIF1α in lung cancer. Am J Cancer Res 2018; 8:4050-4061. [PMID: 30128035 PMCID: PMC6096397 DOI: 10.7150/thno.21524] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2017] [Accepted: 06/11/2018] [Indexed: 12/19/2022] Open
Abstract
Hotspot mutations of isocitrate dehydrogenase 1 and 2 (IDH1/2) have been studied in several cancers. However, the function of wild-type IDH2 in lung cancer and the mechanism of its contribution to growth of cancer cells remain unknown. Here, we explored the role and mechanism of wild-type IDH2 in promoting growth of lung cancer. Methods: Information regarding genomic and clinical application focusing on IDH2 in cancer was examined in several databases of more than 1,000 tumor samples. IDH2 expression was assessed by immunohistochemistry in tissues from lung cancer patients. The biological functions of IDH2 were evaluated by using cell-based assays and in vivo xenograft mouse models. Results: Here we reported that wild-type IDH2 is up-regulated and is an indicator of poor survival in lung cancer and several other cancers. Targeting IDH2 with shRNA resulted in decreased HIF1α expression, leading to the attenuation of lung cancer cell proliferation and tumor growth. Treatment of lung cancer cells with AGI-6780 (a small molecule inhibitor of IDH2), PX-478 (an inhibitor of HIF1α) or incubation with octyl-α-KG inhibited lung cancer cell proliferation. Conclusion: IDH2 promotes the Warburg effect and lung cancer cell growth, which is mediated through HIF1α activation followed by decreased α-KG. Therefore, IDH2 could possibly serve as a novel therapeutic target for lung cancer.
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Li H, Hu J, Luo X, Bode AM, Dong Z, Cao Y. Therapies based on targeting Epstein-Barr virus lytic replication for EBV-associated malignancies. Cancer Sci 2018; 109:2101-2108. [PMID: 29751367 PMCID: PMC6029825 DOI: 10.1111/cas.13634] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 04/24/2018] [Accepted: 04/25/2018] [Indexed: 12/01/2022] Open
Abstract
In recent years, Epstein‐Barr virus (EBV) lytic infection has been shown to significantly contribute to carcinogenesis. Thus, therapies aimed at targeting the EBV lytic cycle have been developed as novel strategies for treatment of EBV‐associated malignancies. In this review, focusing on the viral lytic proteins, we describe recent advances regarding the involvement of the EBV lytic cycle in carcinogenesis. Moreover, we further discuss 2 distinct EBV lytic cycle‐targeted therapeutic strategies against EBV‐induced malignancies. One of the strategies involves inhibition of the EBV lytic cycle by natural compounds known to have anti‐EBV properties; another is to intentionally induce EBV lytic replication in combination with nucleotide analogues. Recent advances in EBV lytic‐based strategies are beginning to show promise in the treatment and/or prevention of EBV‐related tumors.
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Affiliation(s)
- Hongde Li
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Jianmin Hu
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Xiangjian Luo
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Ann M Bode
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Zigang Dong
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Ya Cao
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China.,Research Center for Technologies of Nucleic Acid-Based Diagnostics and Therapeutics, Hunan Province, Changsha, China
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34
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Li JJ, Li R, Wang W, Zhang B, Song X, Zhang C, Gao Y, Liao Q, He Y, You S, Tan Z, Luo X, Li Y, Tang M, Weng X, Yi W, Peng S, Liu S, Tan Y, Bode AM, Cao Y. IDH2 is a novel diagnostic and prognostic serum biomarker for non-small-cell lung cancer. Mol Oncol 2018; 12:602-610. [PMID: 29465809 PMCID: PMC5928355 DOI: 10.1002/1878-0261.12182] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2017] [Revised: 02/07/2018] [Accepted: 02/07/2018] [Indexed: 12/17/2022] Open
Abstract
Lung cancer is the most common leading cause of cancer‐related death worldwide. Late diagnosis contributes to a high mortality rate and poor survival of this cancer. In our previous study, we found that IDH2 polymorphism rs11540478 is a risk factor for lung cancer. Here, we examined IDH2 protein expression in culture medium in which two non‐small‐cell lung cancer (NSCLC) cell lines, H460 and A549, were growing. We found that the IDH2 protein was elevated in the culture supernatant fraction in a time‐ and cell number‐dependent manner. Next, we used ELISA methods to examine IDH2 protein level in serum from patients with NSCLC and healthy controls. We found that IDH2 protein levels in serum could distinguish NSCLC patients from healthy controls with an AUC (area under the curve) of 0.83 (95% confidence interval = 0.79–0.88). The IDH2 level was decreased in serum from NSCLC postsurgical patients compared with the paired presurgical serum. High serum IDH2 levels appear to correlate with poor survival in patients with NSCLC. These results suggest that IDH2 levels in the serum could be a new effective biomarker for the diagnosis and prognosis of NSCLC.
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Affiliation(s)
- Jiang-Jiang Li
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China.,Research Center for Technologies of Nucleic Acid-Based Diagnostics and Therapeutics Hunan Province, Changsha, China
| | - Ruilei Li
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, China
| | - Wenxiang Wang
- The 2nd Department of Thoracic Surgery, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Baihua Zhang
- The 2nd Department of Thoracic Surgery, Hunan Cancer Hospital, The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Xin Song
- Cancer Biotherapy Center, The Third Affiliated Hospital of Kunming Medical University (Tumor Hospital of Yunnan Province), Kunming, China
| | - Chunfang Zhang
- Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Yang Gao
- Department of Thoracic Surgery, Xiangya Hospital, Central South University, Changsha, China
| | - Qianjin Liao
- Key Laboratory of Translational Radiation Oncology, Hunan Province, Hunan Cancer Hospital and The Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, China
| | - Ya He
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Shuo You
- Second Affiliated Hospital of Xiangya, Central South University, Changsha, China
| | - Zheqiong Tan
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Xiangjian Luo
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Yueshuo Li
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Min Tang
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Xinxian Weng
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Wei Yi
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China
| | - Shifang Peng
- Department of Infectious Disease, Xiangya Hospital, Central South University, Changsha, China
| | - Shaohui Liu
- Health Management Center, Xiangya Hospital, Central South University, Changsha, China
| | - Ying Tan
- Health Management Center, Xiangya Hospital, Central South University, Changsha, China
| | - Ann M Bode
- The Hormel Institute, University of Minnesota, Austin, MN, USA
| | - Ya Cao
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, China.,Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha, China.,Research Center for Technologies of Nucleic Acid-Based Diagnostics and Therapeutics Hunan Province, Changsha, China.,National Joint Engineering Research Center for Genetic Diagnostics of Infectious Diseases and Cancer, Changsha, China
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35
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Epigallocatechin-3-gallate confers protection against corticosterone-induced neuron injuries via restoring extracellular signal-regulated kinase 1/2 and phosphatidylinositol-3 kinase/protein kinase B signaling pathways. PLoS One 2018; 13:e0192083. [PMID: 29373584 PMCID: PMC5786317 DOI: 10.1371/journal.pone.0192083] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2017] [Accepted: 01/16/2018] [Indexed: 12/20/2022] Open
Abstract
Extensive studies suggested epigallocatechin-3-gallate (EGCG) has significant neuroprotection against multiple central neural injuries, but the underlying mechanisms still remain poorly elucidated. Here we provide evidence to support the possible involvement of extracellular signal-regulated kinase 1/2 (ERK1/2) and phosphatidylinositol-3 kinase/ protein kinase B (PI3K/AKT) pathways in EGCG-mediated protection against corticosterone-induced neuron injuries. As an essential stress hormone, corticosterone could induce obvious neurotoxicity in primary hippocampal neurons. Pre-treatment with EGCG ameliorated the corticosterone-induced neuronal injuries; however, it was blocked by pharmacological inhibitors for ERK1/2 (U0126) and PI3K/AKT (LY294002). Furthermore, the results confirmed that EGCG restored the corticosterone-induced decrease of ERK1/2 and PI3K/AKT phosphorylation, and attenuated the corticosterone-induced reduction of peroxisome proliferators-activated receptor-γ coactivator-1α (PGC-1α) expression and ATP production. Taken together, these findings indicated that EGCG has significant neuroprotection against corticosterone-induced neuron injuries partly via restoring the ERK1/2 and PI3K/AKT signaling pathways as well as the PGC-1α-mediated ATP production.
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36
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Tsai CY, Chen CY, Chiou YH, Shyu HW, Lin KH, Chou MC, Huang MH, Wang YF. Epigallocatechin-3-Gallate Suppresses Human Herpesvirus 8 Replication and Induces ROS Leading to Apoptosis and Autophagy in Primary Effusion Lymphoma Cells. Int J Mol Sci 2017; 19:ijms19010016. [PMID: 29267216 PMCID: PMC5795967 DOI: 10.3390/ijms19010016] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Revised: 12/15/2017] [Accepted: 12/18/2017] [Indexed: 12/02/2022] Open
Abstract
Epigallocatechin-3-gallate (EGCG), the major constituent of green tea, has been shown to induce cell death in cancer cells. Primary effusion lymphoma (PEL) is an aggressive neoplasm caused by human herpesvirus 8 (HHV8). In this study, we examined the role of EGCG on PEL cells in cell death and HHV8 replication. We performed trypan blue exclusion assay to assess the cell viability of PEL cells, flow cytometry analysis to examine the cell cycle distribution and reactive oxygen species (ROS) generation, caspase-3 activity to assay apoptosis, acridine orange staining to determine autophagy, and immunoblotting to detect the protein levels involved in apoptosis and autophagy as well as mitogen activated protein kinases (MAPKs) activation upon EGCG treatment. The expression of the HHV8 lytic gene was determined by luciferase reporter assay and reverse transcription-PCR, and viral progeny production was determined by PCR. Results revealed that EGCG induced cell death and ROS generation in PEL cells in a dose-dependent manner. N-acetylcysteine (NAC) inhibited the EGCG-induced ROS and rescued the cell from EGCG-induced cell death. Even though EGCG induced ROS generation in PEL cells, it reduced the production of progeny virus from PEL cells without causing HHV8 reactivation. These results suggest that EGCG may represent a novel strategy for the treatment of HHV8 infection and HHV8-associated lymphomas.
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Affiliation(s)
- Ching-Yi Tsai
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Chang-Yu Chen
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Yee-Hsuan Chiou
- Department of Pediatrics, Kaohsiung Veterans General Hospital, Kaohsiung 83102, Taiwan.
| | - Huey-Wen Shyu
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Kuan-Hua Lin
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Miao-Chen Chou
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Mei-Han Huang
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
| | - Yi-Fen Wang
- Department of Medical Laboratory Science and Biotechnology, Fooyin-University, Kaohsiung 83102, Taiwan.
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37
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Liu S, Li H, Tang M, Cao Y. (-)-Epigallocatechin-3-gallate inhibition of Epstein-Barr virus spontaneous lytic infection involves downregulation of latent membrane protein 1. Exp Ther Med 2017; 15:1105-1112. [PMID: 29399111 DOI: 10.3892/etm.2017.5495] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 07/27/2017] [Indexed: 12/13/2022] Open
Abstract
The Epstein-Barr virus (EBV) lytic cycle contributes to the development of EBV-associated diseases. EBV-encoded latent membrane protein 1 (LMP1) is key to EBV lytic replication, and our previous work indicated that epigallocatechin-3-gallate (EGCG) inhibited constitutive EBV lytic infection through the suppression of LMP1-activated phosphoinositide 3-kinase/Akt and mitogen-activated protein kinase kinase/extracellular signal-related protein kinase 1/2 signaling. The present study demonstrated that LMP1 in CNE-LMP1 constructed cells significantly induced the expression of the EBV lytic proteins BZLF1 (P<0.001) and BMRF1 (P<0.05) compared with CNE1 cells. Following treatment with a specific DNAzyme that targets LMP1, significantly reduced protein expression levels of BZLF1 and BMRF1 in EBV-associated epithelial carcinoma CNE1-LMP1 cells (P<0.001 and P<0.01, respectively) and lymphoma B95.8 cells (both P<0.01) were observed. Furthermore, EGCG significantly inhibited the mRNA and protein expression levels of LMP1 (P<0.05) in an apparent dose-dependent manner in CNE1-LMP1 and B95.8 cells. Thus, the present findings indicated that the molecular mechanism underlying EGCG inhibition of EBV lytic infection involves downregulation of LMP1.
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Affiliation(s)
- Sufang Liu
- Key Laboratory of Carcinogenesis and Cancer Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan 410078, P.R. China.,Division of Hematology, Institute of Molecular Hematology, The Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, P.R. China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Hongde Li
- Key Laboratory of Carcinogenesis and Cancer Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan 410078, P.R. China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Min Tang
- Key Laboratory of Carcinogenesis and Cancer Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan 410078, P.R. China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
| | - Ya Cao
- Key Laboratory of Carcinogenesis and Cancer Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha, Hunan 410078, P.R. China.,Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha, Hunan 410078, P.R. China
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38
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Zheng DS, Chen LS. Triterpenoids from Ganoderma lucidum inhibit the activation of EBV antigens as telomerase inhibitors. Exp Ther Med 2017; 14:3273-3278. [PMID: 28912878 PMCID: PMC5585879 DOI: 10.3892/etm.2017.4883] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 05/15/2017] [Indexed: 11/06/2022] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a malignant disease that threatens the health of humans. To find effective agents for the inhibition of Epstein-Barr virus (EBV) infection, which is associated with NPC, a phytochemical investigation of Ganoderma lucidum was carried out in the present study. Five triterpenoids were identified, including ganoderic acid A (compound 1), ganoderic acid B (compound 2), ganoderol B (compound 3), ganodermanontriol (compound 4), and ganodermanondiol (compound 5), on the basis of spectroscopic analysis. An inhibition of EBV antigens activation assay was implemented to elucidate the triterpenoids from G. lucidum and potentially prevent NPC. All the triterpenoids showed significant inhibitory effects on both EBV EA and CA activation at 16 nmol. At 3.2 nmol, all the compounds moderately inhibited the activation of the two antigens. The activity of telomerase was inhibited by these triterpenoids at 10 µM. Molecular docking demonstrated that compound 1 was able to inhibit telomerase as a ligand. In addition, the physicochemical properties of these compounds were calculated to elucidate their drug-like properties. These results provided evidence for the application of these triterpenoids and whole G. lucidum in the treatment of NPC.
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Affiliation(s)
- Dong-Shu Zheng
- Department of Otolaryngology Head and Neck Surgery, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
| | - Liang-Shu Chen
- Ward of Cadre Care, The First Affiliated Hospital of Xiamen University, Xiamen, Fujian 361003, P.R. China
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39
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A Review of the Antiviral Role of Green Tea Catechins. Molecules 2017; 22:molecules22081337. [PMID: 28805687 PMCID: PMC6152177 DOI: 10.3390/molecules22081337] [Citation(s) in RCA: 108] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2017] [Revised: 08/07/2017] [Accepted: 08/10/2017] [Indexed: 12/16/2022] Open
Abstract
Over the centuries, infectious diseases caused by viruses have seriously threatened human health globally. Viruses are responsible not only for acute infections but also many chronic infectious diseases. To prevent diseases caused by viruses, the discovery of effective antiviral drugs, in addition to vaccine development, is important. Green tea catechins (GTCs) are polyphenolic compounds from the leaves of Camelliasinensis. In recent decades, GTCs have been reported to provide various health benefits against numerous diseases. Studies have shown that GTCs, especially epigallocatechin-3-gallate (EGCG), have antiviral effects against diverse viruses. The aim of this review is to summarize the developments regarding the antiviral activities of GTCs, to discuss the mechanisms underlying these effects and to offer suggestions for future research directions and perspectives on the antiviral effects of EGCG.
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40
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Hu J, Li H, Luo X, Li Y, Bode A, Cao Y. The role of oxidative stress in EBV lytic reactivation, radioresistance and the potential preventive and therapeutic implications. Int J Cancer 2017; 141:1722-1729. [PMID: 28571118 DOI: 10.1002/ijc.30816] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Accepted: 05/26/2017] [Indexed: 12/23/2022]
Affiliation(s)
- Jianmin Hu
- Key Laboratory of Cancer Carcinogenesis and Invasion, Chinese Ministry of Education; Xiangya Hospital, Central South University; Changsha China
- Cancer Research Institute, Xiangya School of Medicine, Central South University; Changsha China
- Key Laboratory of Carcinogenesis; Chinese Ministry of Health; Changsha China
| | - Hongde Li
- Key Laboratory of Cancer Carcinogenesis and Invasion, Chinese Ministry of Education; Xiangya Hospital, Central South University; Changsha China
- Cancer Research Institute, Xiangya School of Medicine, Central South University; Changsha China
- Key Laboratory of Carcinogenesis; Chinese Ministry of Health; Changsha China
| | - Xiangjian Luo
- Key Laboratory of Cancer Carcinogenesis and Invasion, Chinese Ministry of Education; Xiangya Hospital, Central South University; Changsha China
- Cancer Research Institute, Xiangya School of Medicine, Central South University; Changsha China
- Key Laboratory of Carcinogenesis; Chinese Ministry of Health; Changsha China
| | - Yueshuo Li
- Key Laboratory of Cancer Carcinogenesis and Invasion, Chinese Ministry of Education; Xiangya Hospital, Central South University; Changsha China
- Cancer Research Institute, Xiangya School of Medicine, Central South University; Changsha China
- Key Laboratory of Carcinogenesis; Chinese Ministry of Health; Changsha China
| | - Ann Bode
- The Hormel Institute, University of Minnesota; Austin MN 55912
| | - Ya Cao
- Key Laboratory of Cancer Carcinogenesis and Invasion, Chinese Ministry of Education; Xiangya Hospital, Central South University; Changsha China
- Cancer Research Institute, Xiangya School of Medicine, Central South University; Changsha China
- Key Laboratory of Carcinogenesis; Chinese Ministry of Health; Changsha China
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Yin Q, Sides M, Parsons CH, Flemington EK, Lasky JA. Arsenic trioxide inhibits EBV reactivation and promotes cell death in EBV-positive lymphoma cells. Virol J 2017. [PMID: 28637474 PMCID: PMC5480106 DOI: 10.1186/s12985-017-0784-7] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Background Epstein-Barr Virus (EBV) is associated with hematopoietic malignancies, such as Burkitt’s lymphoma, post-transplantation lymphoproliferative disorder, and diffuse large B-cell lymphoma. The current approach for EBV-associated lymphoma involves chemotherapy to eradicate cancer cells, however, normal cells may be injured and organ dysfunction may occur with currently employed regimens. This research is focused on employing arsenic trioxide (ATO) as EBV-specific cancer therapy takes advantage of the fact the EBV resides within the malignant cells. Methods and results Our research reveals that low ATO inhibits EBV gene expression and genome replication. EBV spontaneous reactivation starts as early as 6 h after re-suspending EBV-positive Mutu cells in RPMI media in the absence of ATO, however this does not occur in Mutu cells cultured with ATO. ATO’s inhibition of EBV spontaneous reactivation is dose dependent. The expression of the EBV immediate early gene Zta and early gene BMRF1 is blocked with low concentrations of ATO (0.5 nM – 2 nM) in EBV latency type I cells and EBV-infected PBMC cells. The combination of ATO and ganciclovir further diminishes EBV gene expression. ATO-mediated reduction of EBV gene expression can be rescued by co-treatment with the proteasome inhibitor MG132, indicating that ATO promotes ubiquitin conjugation and proteasomal degradation of EBV genes. Co-immunoprecipitation assays with antibodies against Zta pulls down more ubiquitin in ATO treated cell lysates. Furthermore, MG132 reverses the inhibitory effect of ATO on anti-IgM-, PMA- and TGF-β-mediated EBV reactivation. Thus, mechanistically ATO’s inhibition of EBV gene expression occurs via the ubiquitin pathway. Moreover, ATO treatment results in increased cell death in EBV-positive cells compared to EBV-negative cells, as demonstrated by both MTT and trypan blue assays. ATO-induced cell death in EBV-positive cells is dose dependent. ATO and ganciclovir in combination further enhances cell death specifically in EBV-positive cells. Conclusion ATO-mediated inhibition of EBV lytic gene expression results in cell death selectively in EBV-positive lymphocytes, suggesting that ATO may potentially serve as a drug to treat EBV-related lymphomas in the clinical setting.
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Affiliation(s)
- Qinyan Yin
- Department of Medicine, Section of Pulmonary Disease, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, 70112, USA
| | - Mark Sides
- Department of Medicine, Section of Pulmonary Disease, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, 70112, USA.,Department of Internal Medicine, University of Texas Medical Branch, 300 University Blvd, Galveston, TX, 77550, USA
| | - Christopher H Parsons
- Department of Internal Medicine, Louisiana University School of Medicine, 1901 Perdido Street, New Orleans, LA, 70112, USA
| | - Erik K Flemington
- Department of Pathology and Laboratory, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, 70112, USA
| | - Joseph A Lasky
- Department of Medicine, Section of Pulmonary Disease, Tulane University School of Medicine, 1430 Tulane Ave, New Orleans, LA, 70112, USA.
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42
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Flavonoids: promising natural compounds against viral infections. Arch Virol 2017; 162:2539-2551. [PMID: 28547385 PMCID: PMC7087220 DOI: 10.1007/s00705-017-3417-y] [Citation(s) in RCA: 254] [Impact Index Per Article: 36.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2017] [Accepted: 04/05/2017] [Indexed: 01/12/2023]
Abstract
Flavonoids are widely distributed as secondary metabolites produced by plants and play important roles in plant physiology, having a variety of potential biological benefits such as antioxidant, anti-inflammatory, anticancer, antibacterial, antifungal and antiviral activity. Different flavonoids have been investigated for their potential antiviral activities and several of them exhibited significant antiviral properties in in vitro and even in vivo studies. This review summarizes the evidence for antiviral activity of different flavonoids, highlighting, where investigated, the cellular and molecular mechanisms of action on viruses. We also present future perspectives on therapeutic applications of flavonoids against viral infections.
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43
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Gandhi J, Khera L, Gaur N, Paul C, Kaul R. Role of Modulator of Inflammation Cyclooxygenase-2 in Gammaherpesvirus Mediated Tumorigenesis. Front Microbiol 2017; 8:538. [PMID: 28400769 PMCID: PMC5368278 DOI: 10.3389/fmicb.2017.00538] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 03/14/2017] [Indexed: 12/25/2022] Open
Abstract
Chronic inflammation is recognized as a threat factor for cancer progression. Release of inflammatory molecules generates microenvironment which is highly favorable for development of tumor, cancer progression and metastasis. In cases of latent viral infections, generation of such a microenvironment is one of the major predisposing factors related to virus mediated tumorigenesis. Among various inflammatory mediators implicated in pathological process associated with cancer, the cyclooxygenase (COX) and its downstream effector molecules are of greater significance. Though the role of infectious agents in causing inflammation leading to transformation of cells has been more or less well established, however, the mechanism by which inflammation in itself modulates the events in life cycle of infectious agent is not very much clear. This is specifically important for gammaherpesviruses infections where viral life cycle is characterized by prolonged periods of latency when the virus remains hidden, immunologically undetectable and expresses only a very limited set of genes. Therefore, it is important to understand the mechanisms for role of inflammation in virus life cycle and tumorigenesis. This review is an attempt to summarize the latest findings highlighting the significance of COX-2 and its downstream signaling effectors role in life cycle events of gammaherpesviruses leading to progression of cancer.
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Affiliation(s)
- Jaya Gandhi
- Department of Microbiology, University of Delhi South Campus New Delhi, India
| | - Lohit Khera
- Department of Microbiology, University of Delhi South Campus New Delhi, India
| | - Nivedita Gaur
- Department of Microbiology, University of Delhi South Campus New Delhi, India
| | - Catherine Paul
- Department of Microbiology, University of Delhi South Campus New Delhi, India
| | - Rajeev Kaul
- Department of Microbiology, University of Delhi South Campus New Delhi, India
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EBV reactivation as a target of luteolin to repress NPC tumorigenesis. Oncotarget 2017; 7:18999-9017. [PMID: 26967558 PMCID: PMC4951347 DOI: 10.18632/oncotarget.7967] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2015] [Accepted: 02/08/2016] [Indexed: 11/25/2022] Open
Abstract
Nasopharyngeal carcinoma (NPC) is a malignancy derived from the epithelial cells of the nasopharynx. Although a combination of radiotherapy with chemotherapy is effective for therapy, relapse and metastasis after remission remain major causes of mortality. Epstein-Barr virus (EBV) is believed to be one of causes of NPC development. We demonstrated previously that EBV reactivation is important for the carcinogenesis of NPC. We sought, therefore, to determine whether EBV reactivation can be a target for retardation of relapse of NPC. After screening, we found luteolin is able to inhibit EBV reactivation. It inhibited EBV lytic protein expression and repressed the promoter activities of two major immediate-early genes, Zta and Rta. Furthermore, luteolin was shown to reduce genomic instability induced by recurrent EBV reactivation in NPC cells. EBV reactivation-induced NPC cell proliferation and migration, as well as matrigel invasiveness, were also repressed by luteolin treatment. Tumorigenicity in mice, induced by EBV reactivation, was decreased profoundly following luteolin administration. Together, these results suggest that inhibition of EBV reactivation is a novel approach to prevent the relapse of NPC.
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Yang CS, Wang H. Cancer Preventive Activities of Tea Catechins. Molecules 2016; 21:E1679. [PMID: 27941682 PMCID: PMC6273642 DOI: 10.3390/molecules21121679] [Citation(s) in RCA: 120] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2016] [Revised: 11/18/2016] [Accepted: 11/24/2016] [Indexed: 02/06/2023] Open
Abstract
Catechins are widely occurring in our diet and beverages. The cancer-preventive activities of catechins have been extensively studied. Of these, (-)-epigallocatechin-3-gallate (EGCG), the principal catechin in green tea, has received the most attention. The inhibitory activities of tea catechins against carcinogenesis and cancer cell growth have been demonstrated in a large number of laboratory studies. Many mechanisms for modulating cancer signaling and metabolic pathways have been proposed based on numerous studies in cell lines with EGCG, the most active tea catechin. Nevertheless, it is not known whether many of these mechanisms indeed contribute to the anti-cancer activities in animals and in humans. Human studies have provided some results for the cancer preventive activities of tea catechins; however, the activities are not strong. This article reviews the cancer preventive activities and mechanisms of action of tea catechins involving their redox activities, biochemical properties and binding to key enzymes or signal transduction proteins. These mechanisms lead to suppression of cell proliferation, increased apoptosis and inhibition of angiogenesis. The relevance of the proposed mechanisms for cancer prevention are assessed in the light of the situation in vivo. The potential and possible problems in the application of tea and tea-derived products for cancer prevention are discussed.
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Affiliation(s)
- Chung S Yang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8020, USA.
| | - Hong Wang
- Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854-8020, USA.
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Li H, Liu S, Hu J, Luo X, Li N, M Bode A, Cao Y. Epstein-Barr virus lytic reactivation regulation and its pathogenic role in carcinogenesis. Int J Biol Sci 2016; 12:1309-1318. [PMID: 27877083 PMCID: PMC5118777 DOI: 10.7150/ijbs.16564] [Citation(s) in RCA: 86] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 08/20/2016] [Indexed: 12/27/2022] Open
Abstract
Epstein-Barr virus (EBV) has been associated with several types of human cancers. In the host, EBV can establish two alternative modes of life cycle, known as latent or lytic and the switch from latency to the lytic cycle is known as EBV reactivation. Although EBV in cancer cells is found mostly in latency, a small number of lytically-infected cells promote carcinogenesis through the release of growth factors and oncogenic cytokines. This review focuses on the mechanisms by which EBV reactivation is controlled by cellular and viral factors, and discusses how EBV lytic infection contributes to human malignancies.
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Affiliation(s)
- Hongde Li
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha 410078, China; Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha 410078, China; Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha 410078, China
| | - Sufang Liu
- Division of Hematology, Institute of Molecular Hematology, the Second Xiangya Hospital, Central South University, Changsha, Hunan 410011, China
| | - Jianmin Hu
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha 410078, China; Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha 410078, China; Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha 410078, China
| | - Xiangjian Luo
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha 410078, China; Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha 410078, China; Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha 410078, China
| | - Namei Li
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha 410078, China; Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha 410078, China; Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha 410078, China
| | - Ann M Bode
- The Hormel Institute, University of Minnesota, Austin, MN 55912, USA
| | - Ya Cao
- Key Laboratory of Carcinogenesis and Invasion, Chinese Ministry of Education, Xiangya Hospital, Central South University, Changsha 410078, China; Cancer Research Institute, Xiangya School of Medicine, Central South University, Changsha 410078, China; Key Laboratory of Carcinogenesis, Chinese Ministry of Health, Changsha 410078, China
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Zhang L, Wu H, Sun G, Xu X, Sun X, Cao L. Trichloromethane fraction of Incarvillea compacta induces lytic cytotoxicity and apoptosis in Epstein-Barr virus-positive gastric cancer AGS cells. Altern Ther Health Med 2016; 16:344. [PMID: 27595569 PMCID: PMC5011811 DOI: 10.1186/s12906-016-1331-6] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2016] [Accepted: 08/31/2016] [Indexed: 12/21/2022]
Abstract
Background Incarvillea compacta Maxim. has been used to treat stomach disease in Tibet for many years. The objectives of this study were to explore the anti-cancer ability of trichloromethane fraction of I. compacta Maxim. roots (IC-TCL, R2) in EBV positive AGS cancer cells and its effects on cell cycle arrest, apoptosis and lytic induction. Methods MTT and trypan blue assays were to detect the inhibitory effects of different fraction in different cell lines. Hoechst 33342 staining, Annexin V-PE/7-AAD staining and DIOC6 staining were used to detect the apoptosis induction effects of R2. Western blot experiments were used to detect the expression of apoptosis related proteins BAX and Bcl-2, EBV lytic related proteins BZLF1 and BMRF1, cell cycle regulation related proteins Cyclin D1 and RB after R2 treatment. Cell cycle arrest was analyzed by flow cytometry. Results MTT and trypan blue assays revealed that R2 could significantly reduce cell viability in a dose-dependent manner in EBV positive AGS cells compared with non-EBV infected AGS and other cancer cell lines, whereas n-BuOH and H2O fractions showed non-inhibitory effects in tested cancer cells. R2 could decrease mitochondrial membrane potential and the expression of Bcl-2, while increase the expression of BAX. R2 could also induce EBV lytic replication by activating mRNA levels of BZLF1, BRLF1 and BMRF1. Protein expressions of BZLF1 and BMRF1 were also increased after R2 treatment. Cell cycle analysis showed that R2 treatment could induce G0/G1 phase arrest. The expression of Cyclin D1 decreased, while Rb increased. Conclusions These results demonstrated that R2 could inhibit the proliferation of AGS-EBV cancer cells by inducing EBV lytic replication, apoptosis and G0/G1 arrest, through the regulation of related proteins. Therefore, R2 could be used as a potential treatment in AGS-EBV cells. Electronic supplementary material The online version of this article (doi:10.1186/s12906-016-1331-6) contains supplementary material, which is available to authorized users.
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An ERp57-mediated disulphide exchange promotes the interaction between Burkholderia cenocepacia and epithelial respiratory cells. Sci Rep 2016; 6:21140. [PMID: 26879174 PMCID: PMC4754759 DOI: 10.1038/srep21140] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2015] [Accepted: 01/19/2016] [Indexed: 01/29/2023] Open
Abstract
Previous studies have demonstrated that extracellular glutathione reduces the ability of the Cystic Fibrosis pathogen Burkholderia cenocepacia to infect primary or immortalized epithelial respiratory cells. We report here that the adhesion and invasion ability of B. cenocepacia is limited also by thiol-oxidizing and disulphide-reducing agents and by protein disulfide isomerase (PDI) inhibitors. PDI inhibitors also reduce the proinflammatory response elicited by cells in response to Burkholderia. These findings indicate that a membrane-associated PDI catalyzes thiol/disulphide exchange reactions which favor bacterial infection. The combined use of selective PDI inhibitors, RNA silencing and specific antibodies identified ERp57 as a major PDI involved in the interaction between B. cenocepacia and epithelial cells. This study contributes to the elucidation of the Burkholderia pathogenic mechanisms by showing that this microorganism exploits a membrane-associated host protein to infect epithelial cells and identifies ERp57 as a putative pharmacological target for the treatment of Burkholderia lung infections.
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Gandhi J, Gaur N, Khera L, Kaul R, Robertson ES. COX-2 induces lytic reactivation of EBV through PGE2 by modulating the EP receptor signaling pathway. Virology 2015; 484:1-14. [PMID: 26057147 PMCID: PMC4567511 DOI: 10.1016/j.virol.2015.05.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2014] [Revised: 01/28/2015] [Accepted: 05/11/2015] [Indexed: 01/12/2023]
Abstract
Inflammation is one of the predisposing factors known to be associated with Epstein Barr Virus (EBV) mediated tumorigenesis. However it is not well understood whether inflammation in itself plays a role in regulating the life cycle of this infectious agent. COX-2, a key mediator of the inflammatory processes is frequently over-expressed in EBV positive cancer cells. In various tumors, PGE2 is the principle COX-2 regulated downstream product which exerts its effects on cellular processes through the EP1-4 receptors. In this study, we further elucidated how upregulated COX-2 levels can modulate the events in EBV life cycle related to latency-lytic reactivation. Our data suggest a role for upregulated COX-2 on modulation of EBV latency through its downstream effector PGE2. This study demonstrates a role for increased COX-2 levels in modulation of EBV latency. This is important for understanding the pathogenesis of EBV-associated cancers in people with chronic inflammatory conditions.
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Affiliation(s)
- Jaya Gandhi
- Department of Microbiology, University of Delhi South Campus, New Delhi, India
| | - Nivedita Gaur
- Department of Microbiology, University of Delhi South Campus, New Delhi, India
| | - Lohit Khera
- Department of Microbiology, University of Delhi South Campus, New Delhi, India
| | - Rajeev Kaul
- Department of Microbiology, University of Delhi South Campus, New Delhi, India.
| | - Erle S Robertson
- Department of Microbiology and Tumour Virology Program, Abramson Cancer Center, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, USA.
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Liang W, He L, Ning P, Lin J, Li H, Lin Z, Kang K, Zhang Y. (+)-Catechin inhibition of transmissible gastroenteritis coronavirus in swine testicular cells is involved its antioxidation. Res Vet Sci 2015; 103:28-33. [PMID: 26679792 PMCID: PMC7111882 DOI: 10.1016/j.rvsc.2015.09.009] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2015] [Revised: 08/18/2015] [Accepted: 09/09/2015] [Indexed: 12/26/2022]
Abstract
Transmissible gastroenteritis virus (TGEV) causes transmissible gastroenteritis (TGE), especially in newborn piglets, which severely threatens the worldwide pig industry. In this study, (+)-catechin was evaluated for its antiviral effect against TGEV in vitro. Viability assays revealed that (+)-catechin treatment exerted a dose-dependent rescue effect in TGEV-infected ST cells, and this result was only obtained with the post-treatment application of (+)-catechin. The viral yields in (+)-catechin-treated cultures were reduced by almost three log10 units. Quantitative real-time PCR analysis of the TGEV genome revealed that TGEV RNA replication was restricted after (+)-catechin treatment. Intracellular reactive oxygen species (ROS) detection showed that (+)-catechin alleviated ROS conditions induced by TGEV infection. Our results showed that (+)-catechin exerts an inhibitory effect on TGEV proliferation in vitro and is involved its antioxidation. (+)-Catechin has anti-TGEV effect. Anti-TGEV effect was working after TGEV infection. (+)-Catechin could relieve CPE caused by TGEV in ST cells. TGEV proliferation was decreased after (+)-catechin incubation. Antioxidation of (+)-catechin is related to its antiviral effect.
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Affiliation(s)
- Wulong Liang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Lei He
- Animal Disease and Public Security Academician Workstation of Henan Province, The Key Lab of Animal Disease and Public Security, Henan University of Science and Technology, Luoyang 471003, PR China
| | - Pengbo Ning
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Jihui Lin
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Helin Li
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Zhi Lin
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Kai Kang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, PR China
| | - Yanming Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, PR China.
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