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Eshraghi R, Rafiei M, Hadian Jazi Z, Shafie D, Raisi A, Mirzaei H. MicroRNA-155 and exosomal microRNA-155: Small pieces in the cardiovascular diseases puzzle. Pathol Res Pract 2024; 257:155274. [PMID: 38626659 DOI: 10.1016/j.prp.2024.155274] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/14/2024] [Revised: 03/23/2024] [Accepted: 03/26/2024] [Indexed: 04/18/2024]
Abstract
MicroRNAs (miRs, miRNAs) are known to have a part in various human illnesses, such as those related to the heart. One particular miRNA, miR-155, has been extensively studied and has been found to be involved in hematopoietic lineage differentiation, immunity, viral infections, inflammation, as well as vascular remodeling. These processes have all been connected to cardiovascular diseases, including heart failure, diabetic heart disease, coronary artery disease, and abdominal aortic aneurysm. The impacts of miR-155 depend on the type of cell it is acting on and the specific target genes involved, resulting in different mechanisms of disease. Although, the exact part of miR-155 in cardiovascular illnesses is yet not fully comprehended, as some studies have shown it to promote the development of atherosclerosis while others have shown it to prevent it. As a result, to comprehend the underlying processes of miR-155 in cardiovascular disorders, further thorough study is required. It has been discovered that exosomes that could be absorbed by adjacent or distant cells, control post-transcriptional regulation of gene expression by focusing on mRNA. Exosomal miRNAs have been found to have a range of functions, including participating in inflammatory reactions, cell movement, growth, death, autophagy, as well as epithelial-mesenchymal transition. An increasing amount of research indicates that exosomal miRNAs are important for cardiovascular health and have a major role in the development of a number of cardiovascular disorders, including pulmonary hypertension, atherosclerosis, acute coronary syndrome, heart failure, and myocardial ischemia-reperfusion injury. Herein the role of miR-155 and its exosomal form in heart diseases are summarized.
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Affiliation(s)
- Reza Eshraghi
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran.
| | - Moein Rafiei
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Zahra Hadian Jazi
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Davood Shafie
- Cardiology/Heart Failure and Transplantation, Heart Failure Research Center, Isfahan Cardiovascular Research Institute, Isfahan University of Medical Sciences, Isfahan, Iran
| | - Arash Raisi
- Student Research Committee, Kashan University of Medical Sciences, Kashan, Iran
| | - Hamed Mirzaei
- Research Center for Biochemistry and Nutrition in Metabolic Diseases, Institute for Basic Sciences, Kashan University of Medical Sciences, Kashan, Iran.
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2
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Deng Z, Fan T, Xiao C, Tian H, Zheng Y, Li C, He J. TGF-β signaling in health, disease, and therapeutics. Signal Transduct Target Ther 2024; 9:61. [PMID: 38514615 PMCID: PMC10958066 DOI: 10.1038/s41392-024-01764-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 08/31/2023] [Accepted: 01/31/2024] [Indexed: 03/23/2024] Open
Abstract
Transforming growth factor (TGF)-β is a multifunctional cytokine expressed by almost every tissue and cell type. The signal transduction of TGF-β can stimulate diverse cellular responses and is particularly critical to embryonic development, wound healing, tissue homeostasis, and immune homeostasis in health. The dysfunction of TGF-β can play key roles in many diseases, and numerous targeted therapies have been developed to rectify its pathogenic activity. In the past decades, a large number of studies on TGF-β signaling have been carried out, covering a broad spectrum of topics in health, disease, and therapeutics. Thus, a comprehensive overview of TGF-β signaling is required for a general picture of the studies in this field. In this review, we retrace the research history of TGF-β and introduce the molecular mechanisms regarding its biosynthesis, activation, and signal transduction. We also provide deep insights into the functions of TGF-β signaling in physiological conditions as well as in pathological processes. TGF-β-targeting therapies which have brought fresh hope to the treatment of relevant diseases are highlighted. Through the summary of previous knowledge and recent updates, this review aims to provide a systematic understanding of TGF-β signaling and to attract more attention and interest to this research area.
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Affiliation(s)
- Ziqin Deng
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Tao Fan
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Chu Xiao
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - He Tian
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Yujia Zheng
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China
| | - Chunxiang Li
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
| | - Jie He
- Department of Thoracic Surgery, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100021, China.
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3
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Brito Querido J, Díaz-López I, Ramakrishnan V. The molecular basis of translation initiation and its regulation in eukaryotes. Nat Rev Mol Cell Biol 2024; 25:168-186. [PMID: 38052923 DOI: 10.1038/s41580-023-00624-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/24/2023] [Indexed: 12/07/2023]
Abstract
The regulation of gene expression is fundamental for life. Whereas the role of transcriptional regulation of gene expression has been studied for several decades, it has been clear over the past two decades that post-transcriptional regulation of gene expression, of which translation regulation is a major part, can be equally important. Translation can be divided into four main stages: initiation, elongation, termination and ribosome recycling. Translation is controlled mainly during its initiation, a process which culminates in a ribosome positioned with an initiator tRNA over the start codon and, thus, ready to begin elongation of the protein chain. mRNA translation has emerged as a powerful tool for the development of innovative therapies, yet the detailed mechanisms underlying the complex process of initiation remain unclear. Recent studies in yeast and mammals have started to shed light on some previously unclear aspects of this process. In this Review, we discuss the current state of knowledge on eukaryotic translation initiation and its regulation in health and disease. Specifically, we focus on recent advances in understanding the processes involved in assembling the 43S pre-initiation complex and its recruitment by the cap-binding complex eukaryotic translation initiation factor 4F (eIF4F) at the 5' end of mRNA. In addition, we discuss recent insights into ribosome scanning along the 5' untranslated region of mRNA and selection of the start codon, which culminates in joining of the 60S large subunit and formation of the 80S initiation complex.
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Affiliation(s)
- Jailson Brito Querido
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge, UK
- Department of Biological Chemistry, University of Michigan, Ann Arbor, MI, USA
- Life Sciences Institute, University of Michigan, Ann Arbor, MI, USA
| | - Irene Díaz-López
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge, UK
| | - V Ramakrishnan
- MRC Laboratory of Molecular Biology, Cambridge Biomedical Campus, Cambridge, UK.
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4
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Fong L, Huebner K, Jing R, Smalley K, Brydges C, Fiehn O, Farber J, Croce C. Zinc treatment reverses and anti-Zn-regulated miRs suppress esophageal carcinomas in vivo. Proc Natl Acad Sci U S A 2023; 120:e2220334120. [PMID: 37155893 PMCID: PMC10193985 DOI: 10.1073/pnas.2220334120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2022] [Accepted: 04/04/2023] [Indexed: 05/10/2023] Open
Abstract
Esophageal squamous cell carcinoma (ESCC) is a deadly disease with few prevention or treatment options. ESCC development in humans and rodents is associated with Zn deficiency (ZD), inflammation, and overexpression of oncogenic microRNAs: miR-31 and miR-21. In a ZD-promoted ESCC rat model with upregulation of these miRs, systemic antimiR-31 suppresses the miR-31-EGLN3/STK40-NF-κB-controlled inflammatory pathway and ESCC. In this model, systemic delivery of Zn-regulated antimiR-31, followed by antimiR-21, restored expression of tumor-suppressor proteins targeted by these specific miRs: STK40/EGLN3 (miR-31), PDCD4 (miR-21), suppressing inflammation, promoting apoptosis, and inhibiting ESCC development. Moreover, ESCC-bearing Zn-deficient (ZD) rats receiving Zn medication showed a 47% decrease in ESCC incidence vs. Zn-untreated controls. Zn treatment eliminated ESCCs by affecting a spectrum of biological processes that included downregulation of expression of the two miRs and miR-31-controlled inflammatory pathway, stimulation of miR-21-PDCD4 axis apoptosis, and reversal of the ESCC metabolome: with decrease in putrescine, increase in glucose, accompanied by downregulation of metabolite enzymes ODC and HK2. Thus, Zn treatment or miR-31/21 silencing are effective therapeutic strategies for ESCC in this rodent model and should be examined in the human counterpart exhibiting the same biological processes.
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Affiliation(s)
- Louise Y. Fong
- Department of Pathology, Anatomy, and Cell Biology, Thomas Jefferson University, Philadelphia, PA19107
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA19107
| | - Kay Huebner
- Department of Cancer Biology and Genetics, Comprehensive Cancer Center, The Ohio State University, Columbus, OH43210
| | - Ruiyan Jing
- Department of Pathology, Anatomy, and Cell Biology, Thomas Jefferson University, Philadelphia, PA19107
| | - Karl J. Smalley
- Sidney Kimmel Cancer Center, Thomas Jefferson University, Philadelphia, PA19107
| | - Christopher R. Brydges
- NIH West Coast Metabolomics Center, The Genome Center, University of California, Davis, CA95616
| | - Oliver Fiehn
- NIH West Coast Metabolomics Center, The Genome Center, University of California, Davis, CA95616
| | - John L. Farber
- Department of Pathology, Anatomy, and Cell Biology, Thomas Jefferson University, Philadelphia, PA19107
| | - Carlo M. Croce
- Department of Cancer Biology and Genetics, Comprehensive Cancer Center, The Ohio State University, Columbus, OH43210
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Induction of premature senescence and a less-fibrogenic phenotype by programmed cell death 4 knockdown in the human hepatic stellate cell line Lieming Xu-2. Hum Cell 2023; 36:583-601. [PMID: 36522523 PMCID: PMC9947070 DOI: 10.1007/s13577-022-00844-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Accepted: 12/03/2022] [Indexed: 12/23/2022]
Abstract
Although programmed cell death 4 (PDCD4) was initially reported as a tumor suppressor and has been shown to inhibit cancer cell growth and metastasis, recent studies have demonstrated that loss of PDCD4 expression also induces growth inhibition by inducing apoptosis and/or cellular senescence. At present, the roles of PDCD4 in the activation and profibrogenic properties of myofibroblasts, which are critically involved in organ fibrosis, such as that in the liver, are unclear. We, therefore, investigated the roles of PDCD4 in myofibroblasts using human hepatic stellate cell line Lieming Xu-2 (LX-2). PDCD4 knockdown inhibited LX-2 proliferation and induced a senescent phenotype with increased β-galactosidase staining and p21 expression in a p53-independent manner together with downregulation of the notch signaling mediator RBJ-κ/CSL. During PDCD4 knockdown, alpha smooth muscle actin (α-SMA; an activation marker of myofibroblasts), matrix metalloproteinases MMP-1 and MMP-9, and collagen IV were upregulated, but the expression of collagen1α1 and collagen III was markedly downregulated without any marked change in the expression of tissue inhibitor of metalloproteinase-1 (TIMP-1). These results demonstrated that knockdown of PDCD4 induced the cellular senescence phenotype and activated myofibroblasts while suppressing the profibrogenic phenotype, suggesting roles of PDCD4 in cellular senescence and fibrogenesis in the liver.
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Rubio A, Garland GD, Sfakianos A, Harvey RF, Willis AE. Aberrant protein synthesis and cancer development: The role of canonical eukaryotic initiation, elongation and termination factors in tumorigenesis. Semin Cancer Biol 2022; 86:151-165. [PMID: 35487398 DOI: 10.1016/j.semcancer.2022.04.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 04/11/2022] [Accepted: 04/20/2022] [Indexed: 01/27/2023]
Abstract
In tumourigenesis, oncogenes or dysregulated tumour suppressor genes alter the canonical translation machinery leading to a reprogramming of the translatome that, in turn, promotes the translation of selected mRNAs encoding proteins involved in proliferation and metastasis. It is therefore unsurprising that abnormal expression levels and activities of eukaryotic initiation factors (eIFs), elongation factors (eEFs) or termination factors (eRFs) are associated with poor outcome for patients with a wide range of cancers. In this review we discuss how RNA binding proteins (RBPs) within the canonical translation factor machinery are dysregulated in cancers and how targeting such proteins is leading to new therapeutic avenues.
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Affiliation(s)
- Angela Rubio
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Rd, Cambridge CB2 1QR, UK
| | - Gavin D Garland
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Rd, Cambridge CB2 1QR, UK
| | - Aristeidis Sfakianos
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Rd, Cambridge CB2 1QR, UK
| | - Robert F Harvey
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Rd, Cambridge CB2 1QR, UK
| | - Anne E Willis
- MRC Toxicology Unit, University of Cambridge, Gleeson Building, Tennis Court Rd, Cambridge CB2 1QR, UK.
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7
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Ferris WF. The Role and Interactions of Programmed Cell Death 4 and its Regulation by microRNA in Transformed Cells of the Gastrointestinal Tract. Front Oncol 2022; 12:903374. [PMID: 35847932 PMCID: PMC9277020 DOI: 10.3389/fonc.2022.903374] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Accepted: 05/30/2022] [Indexed: 11/26/2022] Open
Abstract
Data from GLOBOCAN 2020 estimates that there were 19.3 million new cases of cancer and 10.0 million cancer-related deaths in 2020 and that this is predicted to increase by 47% in 2040. The combined burden of cancers of the gastrointestinal (GI) tract, including oesophageal-, gastric- and colorectal cancers, resulted in 22.6% of the cancer-related deaths in 2020 and 18.7% of new diagnosed cases. Understanding the aetiology of GI tract cancers should have a major impact on future therapies and lessen this substantial burden of disease. Many cancers of the GI tract have suppression of the tumour suppressor Programmed Cell Death 4 (PDCD4) and this has been linked to the expression of microRNAs which bind to the untranslated region of PDCD4 mRNA and either inhibit translation or target the mRNA for degradation. This review highlights the properties of PDCD4 and documents the evidence for the regulation of PDCD4 expression by microRNAs in cancers of the GI tract.
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8
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Xu Q, Xu JL, Chen WQ, Xu WX, Song YX, Tang WJ, Xu D, Jiang MP, Tang J. Roles and mechanisms of miR-195-5p in human solid cancers. Biomed Pharmacother 2022; 150:112885. [PMID: 35453003 DOI: 10.1016/j.biopha.2022.112885] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2022] [Revised: 03/20/2022] [Accepted: 03/23/2022] [Indexed: 11/02/2022] Open
Abstract
Cancer persists as a worldwide disease that contributes to high morbidity and mortality rates. As a class of non-coding RNA, microRNAs (miRNAs) are one kind of important regulators in cancer and frequently implicated in tumor development and progression. Emerging experiments have suggested that miRNA-195-5p (miR-195-5p) can regulate neoplastic processes in many pathways. For instance, miR-195-5p can not only regulate proliferation, migration and invasion of tumor cells but also promote tumor cell apoptosis. Furthermore, low expression of miR-195-5p could induce drug resistance. Our review focuses on the expression of miR-195-5p in various tumors and elucidates the related mechanisms of which miR-195-5p participates in tumor biology, as well as summarizes the roles of miR-195-5p in tumor progression. We believe that miR-195-5p might have potential utility as a novel diagnostic biomarker and therapeutic target for cancer.
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Affiliation(s)
- Qi Xu
- Department of General Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China
| | - Jia-Lin Xu
- Department of General Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China
| | - Wen-Quan Chen
- Department of General Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China
| | - Wen-Xiu Xu
- Department of General Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China
| | - Yu-Xin Song
- Department of General Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China
| | - Wen-Juan Tang
- Department of General Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China
| | - Di Xu
- Department of General Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China
| | - Meng-Ping Jiang
- Department of General Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China
| | - Jinhai Tang
- Department of General Surgery, the First Affiliated Hospital of Nanjing Medical University, Nanjing 210029, PR China.
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9
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The Bright and the Dark Side of TGF-β Signaling in Hepatocellular Carcinoma: Mechanisms, Dysregulation, and Therapeutic Implications. Cancers (Basel) 2022; 14:cancers14040940. [PMID: 35205692 PMCID: PMC8870127 DOI: 10.3390/cancers14040940] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2021] [Revised: 02/02/2022] [Accepted: 02/03/2022] [Indexed: 01/18/2023] Open
Abstract
Simple Summary Transforming growth factor β (TGF-β) signaling is a preeminent regulator of diverse cellular and physiological processes. Frequent dysregulation of TGF-β signaling has been implicated in cancer. In hepatocellular carcinoma (HCC), the most prevalent form of primary liver cancer, the autocrine and paracrine effects of TGF-β have paradoxical implications. While acting as a potent tumor suppressor pathway in the early stages of malignancy, TGF-β diverts to a promoter of tumor progression in the late stages, reflecting its bright and dark natures, respectively. Within this context, targeting TGF-β represents a promising therapeutic option for HCC treatment. We discuss here the molecular properties of TGF-β signaling in HCC, attempting to provide an overview of its effects on tumor cells and the stroma. We also seek to evaluate the dysregulation mechanisms that mediate the functional switch of TGF-β from a tumor suppressor to a pro-tumorigenic signal. Finally, we reconcile its biphasic nature with the therapeutic implications. Abstract Hepatocellular carcinoma (HCC) is associated with genetic and nongenetic aberrations that impact multiple genes and pathways, including the frequently dysregulated transforming growth factor β (TGF-β) signaling pathway. The regulatory cytokine TGF-β and its signaling effectors govern a broad spectrum of spatiotemporally regulated molecular and cellular responses, yet paradoxically have dual and opposing roles in HCC progression. In the early stages of tumorigenesis, TGF-β signaling enforces profound tumor-suppressive effects, primarily by inducing cell cycle arrest, cellular senescence, autophagy, and apoptosis. However, as the tumor advances in malignant progression, TGF-β functionally switches to a pro-tumorigenic signal, eliciting aggressive tumor traits, such as epithelial–mesenchymal transition, tumor microenvironment remodeling, and immune evasion of cancer cells. On this account, the inhibition of TGF-β signaling is recognized as a promising therapeutic strategy for advanced HCC. In this review, we evaluate the functions and mechanisms of TGF-β signaling and relate its complex and pleiotropic biology to HCC pathophysiology, attempting to provide a detailed perspective on the molecular determinants underlying its functional diversion. We also address the therapeutic implications of the dichotomous nature of TGF-β signaling and highlight the rationale for targeting this pathway for HCC treatment, alone or in combination with other agents.
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Zaidi S, Gough NR, Mishra L. Mechanisms and clinical significance of TGF-β in hepatocellular cancer progression. Adv Cancer Res 2022; 156:227-248. [DOI: 10.1016/bs.acr.2022.02.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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11
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Braun C, Katholnig K, Kaltenecker C, Linke M, Sukhbaatar N, Hengstschläger M, Weichhart T. p38 regulates the tumor suppressor PDCD4 via the TSC-mTORC1 pathway. Cell Stress 2021; 5:176-182. [PMID: 34917890 PMCID: PMC8645265 DOI: 10.15698/cst2021.12.260] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2021] [Revised: 11/08/2021] [Accepted: 11/12/2021] [Indexed: 11/21/2022] Open
Abstract
Programmed cell death protein 4 (PDCD4) exerts critical functions as tumor suppressor and in immune cells to regulate inflammatory processes. The phosphoinositide 3-kinase (PI3K) promotes degradation of PDCD4 via mammalian target of rapamycin complex 1 (mTORC1). However, additional pathways that may regulate PDCD4 expression are largely ill-defined. In this study, we have found that activation of the mitogen-activated protein kinase p38 promoted degradation of PDCD4 in macrophages and fibroblasts. Mechanistically, we identified a pathway from p38 and its substrate MAP kinase-activated protein kinase 2 (MK2) to the tuberous sclerosis complex (TSC) to regulate mTORC1-dependent degradation of PDCD4. Moreover, we provide evidence that TSC1 and TSC2 regulate PDCD4 expression via an additional mechanism independent of mTORC1. These novel data extend our knowledge of how PDCD4 expression is regulated by stress- and nutrient-sensing pathways.
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Affiliation(s)
- Clarissa Braun
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
- Clinical Division of Endocrinology and Metabolism, Department of Internal Medicine III, Medical University of Vienna, Vienna, Austria
| | - Karl Katholnig
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
| | - Christopher Kaltenecker
- Department of Internal Medicine III, Division of Nephrology and Dialysis, Medical University of Vienna, Vienna, Austria
| | - Monika Linke
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
| | - Nyamdelger Sukhbaatar
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
| | - Markus Hengstschläger
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
| | - Thomas Weichhart
- Center of Pathobiochemistry and Genetics, Institute of Medical Genetics, Medical University of Vienna, Vienna, Austria
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Chen Q, Lu H, Duan C, Zhu X, Zhang Y, Li M, Zhang D. PDCD4 Simultaneously Promotes Microglia Activation via PDCD4-MAPK-NF-κB Positive Loop and Facilitates Neuron Apoptosis During Neuroinflammation. Inflammation 2021; 45:234-252. [PMID: 34613548 DOI: 10.1007/s10753-021-01541-9] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2021] [Accepted: 08/10/2021] [Indexed: 10/20/2022]
Abstract
Neuroinflammation and neuron injury are common features of the central nervous system (CNS) diseases. It is of great significance to identify their shared key regulatory molecules and thus explore the potential therapeutic targets. Programmed cell death factor 4 (PDCD4), an apoptosis-related molecule, extensively participates in tumorigenesis and inflammatory diseases, but its expression and biological function during CNS neuroinflammation remain unclear. In the present study, utilizing the lipopolysaccharide (LPS)-induced neuroinflammation model in mice, we reported an elevated expression of PDCD4 both in injured neurons and activated microglia of the inflamed brain. A similar change in PDCD4 expression was observed in vitro in the microglial activation model. Silencing PDCD4 by shRNA significantly inhibited the phosphorylation of MAPKs (p38, ERK, and JNK), prevented the phosphorylation and nuclear translocation of NF-κB p65, and thus attenuated the LPS-induced microglial inflammatory activation. Interestingly, LPS also required the MAPK/NF-κB signaling activation to boost PDCD4 expression in microglia, indicating the presence of a positive loop. Moreover, a persistent elevation of PDCD4 expression was detected in the H2O2-induced neuronal oxidative damage model. Knocking down PDCD4 significantly inhibited the expression of pro-apoptotic proteins BAX and Cleaved-PARP, suggesting the proapoptotic activity of PDCD4 in neurons. Taken together, our data indicated that PDCD4 may serve as a hub regulatory molecule that simultaneously promotes the microglial inflammatory activation and the oxidative stress-induced neuronal apoptosis within CNS. The microglial PDCD4-MAPK-NF-κB positive feedback loop may act as pivotal signaling for neuroinflammation which subsequently exaggerates neuronal injury, and thus may become a potential therapeutic target for neuroinflammatory diseases.
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Affiliation(s)
- Quan Chen
- Medical Research Center, Affiliated Hospital 2 of Nantong University, Nantong, 226001, People's Republic of China.,Department of Pathogen Biology, Medical College, Nantong University, Nantong, 226001, People's Republic of China
| | - Hongjian Lu
- Medical Research Center, Affiliated Hospital 2 of Nantong University, Nantong, 226001, People's Republic of China
| | - Chengwei Duan
- Medical Research Center, Affiliated Hospital 2 of Nantong University, Nantong, 226001, People's Republic of China
| | - Xiangyang Zhu
- Neurology Department, Affiliated Hospital 2 of Nantong University, 226001, Nantong, People's Republic of China
| | - Yi Zhang
- Neurosurgery Department, Affiliated Hospital 2 of Nantong University, 226001, Nantong, People's Republic of China
| | - Mengmeng Li
- Medical Research Center, Affiliated Hospital 2 of Nantong University, Nantong, 226001, People's Republic of China
| | - Dongmei Zhang
- Medical Research Center, Affiliated Hospital 2 of Nantong University, Nantong, 226001, People's Republic of China. .,Department of Pathogen Biology, Medical College, Nantong University, Nantong, 226001, People's Republic of China. .,Rehabilitation Medicine Department, Affiliated Hospital 2 of Nantong University, 226001, Nantong, People's Republic of China.
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13
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Moghbeli M. MicroRNAs as the critical regulators of Cisplatin resistance in ovarian cancer cells. J Ovarian Res 2021; 14:127. [PMID: 34593006 PMCID: PMC8485521 DOI: 10.1186/s13048-021-00882-1] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2020] [Accepted: 09/14/2021] [Indexed: 12/14/2022] Open
Abstract
BACKGROUND Ovarian cancer (OC) is one of the leading causes of cancer related deaths among women. Due to the asymptomatic tumor progression and lack of efficient screening methods, majority of OC patients are diagnosed in advanced tumor stages. A combination of surgical resection and platinum based-therapy is the common treatment option for advanced OC patients. However, tumor relapse is observed in about 70% of cases due to the treatment failure. Cisplatin is widely used as an efficient first-line treatment option for OC; however cisplatin resistance is observed in a noticeable ratio of cases. Regarding, the severe cisplatin side effects, it is required to clarify the molecular biology of cisplatin resistance to improve the clinical outcomes of OC patients. Cisplatin resistance in OC is associated with abnormal drug transportation, increased detoxification, abnormal apoptosis, and abnormal DNA repair ability. MicroRNAs (miRNAs) are critical factors involved in cell proliferation, apoptosis, and chemo resistance. MiRNAs as non-invasive and more stable factors compared with mRNAs, can be introduced as efficient markers of cisplatin response in OC patients. MAIN BODY In present review, we have summarized all of the miRNAs that have been associated with cisplatin resistance in OC. We also categorized the miRNAs based on their targets to clarify their probable molecular mechanisms during cisplatin resistance in ovarian tumor cells. CONCLUSIONS It was observed that miRNAs mainly exert their role in cisplatin response through regulation of apoptosis, signaling pathways, and transcription factors in OC cells. This review highlighted the miRNAs as important regulators of cisplatin response in ovarian tumor cells. Moreover, present review paves the way of suggesting a non-invasive panel of prediction markers for cisplatin response among OC patients.
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Affiliation(s)
- Meysam Moghbeli
- Department of Medical Genetics and Molecular Medicine, School of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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14
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Fedeli M, Kuka M, Finardi A, Albano F, Viganò V, Iannacone M, Furlan R, Dellabona P, Casorati G. miR-21 sustains CD28 signalling and low-affinity T-cell responses at the expense of self-tolerance. Clin Transl Immunology 2021; 10:e1321. [PMID: 34584693 PMCID: PMC8454917 DOI: 10.1002/cti2.1321] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 07/05/2021] [Accepted: 07/07/2021] [Indexed: 12/27/2022] Open
Abstract
Objective miR-21 is highly expressed in iNKT and activated T cells, but its T-cell autonomous functions are poorly defined. We sought to investigate the role of miR-21 in the development and functions of T and iNKT cells, representing adaptive and innate-like populations, respectively. Methods We studied mice with a conditional deletion of miR-21 in all mature T lymphocytes. Results Thymic and peripheral T and iNKT compartments were normal in miR-21 KO mice. Upon activation in vitro, miR-21 depletion reduced T-cell survival, TH17 polarisation and, remarkably, T- and iNKT cell ability to respond to low-affinity antigens, without altering their response to high-affinity ones. Mechanistically, miR-21 sustained CD28-dependent costimulation pathways required to lower the T-cell activation threshold, inhibiting its repressors in a positive feedback circuit, in turn increasing T-cell sensitivity to antigenic stimulation and survival. Upon immunisation with the low-affinity self-epitope MOG35-55, miR-21 KO mice were indeed less susceptible than WT animals to the induction of experimental autoimmune encephalomyelitis, whereas they mounted normal T-cell responses against high-affinity viral epitopes generated upon lymphocytic choriomeningitis virus infection. Conclusion The induction of T-cell responses to weak antigens (signal 1) depends on CD28 costimulation (signal 2). miR-21 sustains CD28 costimulation, decreasing the T-cell activation threshold and increasing their sensitivity to antigenic stimulation and survival, broadening the immune surveillance range. This occurs at the cost of unleashing autoimmunity, resulting from the recognition of weak self-antigens by autoreactive immune responses. Thus, miR-21 fine-tunes T-cell response and self-/non-self-discrimination.
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Affiliation(s)
- Maya Fedeli
- Experimental Immunology Unit Division of Immunology, Transplantation, and Infectious Diseases IRCCS San Raffaele Scientific Institute Milan Italy.,Vita-Salute San Raffaele University Milan Italy
| | - Mirela Kuka
- Vita-Salute San Raffaele University Milan Italy.,Dynamics of Immune Responses Unit Division of Immunology, Transplantation, and Infectious Diseases IRCCS San Raffaele Scientific Institute Milan Italy
| | - Annamaria Finardi
- Clinical Neuroimmunology Unit Institute of Experimental Neurology IRCCS San Raffaele Scientific Institute Milan Italy
| | - Francesca Albano
- Experimental Immunology Unit Division of Immunology, Transplantation, and Infectious Diseases IRCCS San Raffaele Scientific Institute Milan Italy
| | - Valentina Viganò
- Experimental Immunology Unit Division of Immunology, Transplantation, and Infectious Diseases IRCCS San Raffaele Scientific Institute Milan Italy
| | - Matteo Iannacone
- Vita-Salute San Raffaele University Milan Italy.,Dynamics of Immune Responses Unit Division of Immunology, Transplantation, and Infectious Diseases IRCCS San Raffaele Scientific Institute Milan Italy.,Experimental Imaging Centre IRCCS San Raffaele Scientific Institute Milan Italy
| | - Roberto Furlan
- Clinical Neuroimmunology Unit Institute of Experimental Neurology IRCCS San Raffaele Scientific Institute Milan Italy
| | - Paolo Dellabona
- Experimental Immunology Unit Division of Immunology, Transplantation, and Infectious Diseases IRCCS San Raffaele Scientific Institute Milan Italy
| | - Giulia Casorati
- Experimental Immunology Unit Division of Immunology, Transplantation, and Infectious Diseases IRCCS San Raffaele Scientific Institute Milan Italy
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15
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Chen G, Li PH, He JY, Su YL, Chen HJ, Dong JD, Huang YH, Huang XH, Jiang YF, Qin QW, Sun HY. Molecular cloning, inducible expression with SGIV and Vibrio alginolyticus challenge, and function analysis of Epinephelus coioides PDCD4. DEVELOPMENTAL AND COMPARATIVE IMMUNOLOGY 2021; 119:104013. [PMID: 33465381 DOI: 10.1016/j.dci.2021.104013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Revised: 01/11/2021] [Accepted: 01/11/2021] [Indexed: 06/12/2023]
Abstract
Programmed cell death 4 (PDCD4) in mammals, a gene closely associated with apoptosis, is involved in many biological processes, such as cell aging, differentiation, regulation of cell cycle, and inflammatory response. In this study, grouper Epinephelus coioides PDCD4, EcPDCD4-1 and EcPDCD4-2, were obtained. The open reading frame (ORF) of EcPDCD4-1 is 1413 bp encoding 470 amino acids with a molecular mass of 52.39 kDa and a theoretical pI of 5.33. The ORF of EcPDCD4-2 is 1410 bp encoding 469 amino acids with a molecular mass of 52.29 kDa and a theoretical pI of 5.29. Both EcPDCD4-1 and EcPDCD4-2 proteins contain two conserved MA3 domains, and their mRNA were detected in all eight tissues of E. coioides by quantitative real-time PCR (qRT-PCR) with the highest expression in liver. The expressions of two EcPDCD4s were significantly up-regulated after Singapore grouper iridovirus (SGIV) or Vibrio alginolyticus infection. In addition, over-expression of EcPDCD4-1 or EcPDCD4-2 can inhibit the activity of the nuclear factor-κB (NF-κB) and activator protein-1 (AP-1), and regulate SGIV-induced apoptosis. The results demonstrated that EcPDCD4s might play important roles in E. coioides tissues during pathogen-caused inflammation.
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Affiliation(s)
- Guo Chen
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China; Hainan Key Laboratory of Tropical Marine Biotechnology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China; Department of Laboratory, Jining No.1 People's Hospital; Postdoctoral Mobile Station of Shandong University of Traditional Chinese Medicine, Shandong, 272111, PR China; Life Sciences Institute, Zhejiang University, Zhejiang Province, 310058, PR China
| | - Pin-Hong Li
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Jia-Yang He
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Yu-Ling Su
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - He-Jia Chen
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Jun-De Dong
- Hainan Key Laboratory of Tropical Marine Biotechnology, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou, 510301, PR China
| | - You-Hua Huang
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Xiao-Hong Huang
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China
| | - Yu-Feng Jiang
- Department of Laboratory, Jining No.1 People's Hospital; Postdoctoral Mobile Station of Shandong University of Traditional Chinese Medicine, Shandong, 272111, PR China.
| | - Qi-Wei Qin
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China.
| | - Hong-Yan Sun
- Joint Laboratory of Guangdong Province and Hong Kong Regions on Marine Bioresource Conservation and Exploitation, Guangdong Laboratory for Lingnan Modern Agriculture, College of Marine Sciences, South China Agricultural University, Guangzhou, 510642, Guangdong Province, PR China.
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16
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Osoro EK, Du X, Liang D, Lan X, Farooq R, Huang F, Zhu W, Ren J, Sadiq M, Tian L, Yang X, Li D, Lu S. Induction of PDCD4 by albumin in proximal tubule epithelial cells potentiates proteinuria-induced dysfunctional autophagy by negatively targeting Atg5. Biochem Cell Biol 2021; 99:617-628. [PMID: 33831322 DOI: 10.1139/bcb-2021-0028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
The precise molecular mechanism of autophagy dysfunction in type 1 diabetes is not known. Herein, the role of programmed cell death 4 (PDCD4) in autophagy regulation in the pathogenesis of diabetic kidney disease (DKD) in vivo and in vitro was described. It was found that Pdcd4 mRNA and protein was upregulated in the streptozotocin (STZ)-induced DKD rats. In addition, a unilateral ureteral obstruction mouse model displayed an upregulation of PDCD4 in the disease group. kidney biopsy samples of human DKD patients showed an upregulation of PDCD4. Furthermore, western blotting of the STZ-induced DKD rat tissues displayed a low microtubule-associated protein 1A/1B-light chain 3 (LC3)-II, as compared to the control. It was found that albumin overload in cultured PTEC could upregulate the expression of PDCD4 and p62, and decrease the expression of LC3-II and autophagy-related 5 (Atg5) proteins. The knockout of Pdcd4 in cultured PTECs could lessen albumin-induced dysfunctional autophagy as evidenced by the recovery of Atg5 and LC3-II protein. The forced expression of PDCD4 could further suppress the expression of crucial autophagy-related gene Atg5. Herein, endogenous PDCD4 was shown to promote proteinuria-induced dysfunctional autophagy by negatively regulating Atg5. PDCD4 might therefore be a potential therapeutic target in DKD.
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Affiliation(s)
- Ezra Kombo Osoro
- Xian Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Xiaojuan Du
- Xian Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, Shaanxi, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Dong Liang
- Xi'an Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, Shaanxi, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Xi Lan
- Xi'an Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, Shaanxi, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Riaz Farooq
- Xi'an Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, Shaanxi, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Fumeng Huang
- Xian Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Wenhua Zhu
- Xian Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Jiajun Ren
- Xian Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Muhammad Sadiq
- Xian Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Lifang Tian
- Xi'an Jiaotong University, 12480, Department of Nephrology, the Second Affiliated Hospital, Xi'an, Shaanxi, China;
| | - Xudong Yang
- Xian Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Dongmin Li
- Xian Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
| | - Shemin Lu
- Xian Jiaotong University, 12480, Biochemistry and Molecular Biology, Xi'an, Shaanxi, China.,Xi'an Jiaotong University, 12480, Key Laboratory of Environment and Genes Related to Diseases, Xi'an, Shaanxi, China;
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17
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Liu L, Feng Y, Hu S, Li H, Li Y, Ke J, Long X. PDCD4 suppresses autophagy and promotes apoptosis via Akt in chondrocytes of temporomandibular joint osteoarthritis. Oral Dis 2021. [DOI: 10.1111/odi.13559] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Li Liu
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM) School and Hospital of Stomatology Wuhan University Wuhan Hubei Province China
| | - Yaping Feng
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM) School and Hospital of Stomatology Wuhan University Wuhan Hubei Province China
| | - Shiyu Hu
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM) School and Hospital of Stomatology Wuhan University Wuhan Hubei Province China
| | - Huimin Li
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM) School and Hospital of Stomatology Wuhan University Wuhan Hubei Province China
| | - Yanyan Li
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM) School and Hospital of Stomatology Wuhan University Wuhan Hubei Province China
| | - Jin Ke
- State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei‐MOST) Key Laboratory of Oral Biomedicine Ministry of Education (KLOBM) School and Hospital of Stomatology Wuhan University Wuhan Hubei Province China
| | - Xing Long
- Department of Oral and Maxillofacial Surgery School and Hospital of Stomatology Wuhan University Wuhan Hubei Province China
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18
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Jing X, Ren D, Gao F, Chen Y, Wu X, Han Y, Han Q, Li L, Wang X, Tang W, Zhang Y. Gene deficiency or pharmacological inhibition of PDCD4-mediated FGR signaling protects against acute kidney injury. Acta Pharm Sin B 2021; 11:394-405. [PMID: 33643819 PMCID: PMC7893143 DOI: 10.1016/j.apsb.2020.10.024] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Revised: 09/23/2020] [Accepted: 10/13/2020] [Indexed: 12/28/2022] Open
Abstract
Recent studies have shown that programmed cell death 4 (PDCD4) modulates distinct signal transduction pathways in different pathological conditions. Despite acute and chronic immune responses elicited by ischemia contributing to the functional deterioration of the kidney, the contributions and mechanisms of PDCD4 in acute kidney injury (AKI) have remained unclear. Using two murine AKI models including renal ischemia/reperfusion injury (IRI) and cisplatin-induced AKI, we found that PDCD4 deficiency markedly ameliorated renal dysfunction and inflammatory responses in AKI mice. Consistently, upregulation of PDCD4 was also confirmed in the kidneys from patients with biopsy confirmed acute tubular necrosis from a retrospective cohort study. Moreover, we found that overexpression of Fgr, a member of the tyrosine kinase family, dramatically aggravated renal injury and counteracted the protective effects of PDCD4 deficiency in AKI mice. We discovered that FGR upregulated NOTCH1 expression through activating STAT3. Most importantly, we further found that systemic administration of ponatinib, a tyrosine kinase inhibitor, significantly ameliorated AKI in mice. In summary, we identified that PDCD4 served as an important regulator, at least in part, of FGR/NOTCH1-mediated tubular apoptosis and inflammation in AKI mice. Furthermore, our findings suggest that ponatinib-mediated pharmacologic targeting of this pathway had therapeutic potential for mitigating AKI.
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Affiliation(s)
- Xu Jing
- Department of Pharmacology, School of Basic Medical Science, Shandong University, Jinan 250012, China
- Department of Clinical Laboratory, the Second Hospital of Shandong University, Jinan 250033, China
| | - Dandan Ren
- Department of Pharmacology, School of Basic Medical Science, Shandong University, Jinan 250012, China
- Chengda Biology Co., Ltd., Shenyang 110179, China
| | - Fei Gao
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Department of Cardiology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Ye Chen
- Department of Pharmacology, School of Basic Medical Science, Shandong University, Jinan 250012, China
| | - Xiao Wu
- The Key Laboratory of Cardiovascular Remodeling and Function Research, Department of Cardiology, Qilu Hospital of Shandong University, Jinan 250012, China
| | - Yue Han
- Department of Pharmacology, School of Basic Medical Science, Shandong University, Jinan 250012, China
| | - Qingsheng Han
- Department of Pharmacology, School of Basic Medical Science, Shandong University, Jinan 250012, China
| | - Liang Li
- Department of Pharmacology, School of Basic Medical Science, Shandong University, Jinan 250012, China
| | - Xiaojie Wang
- Department of Pharmacology, School of Basic Medical Science, Shandong University, Jinan 250012, China
| | - Wei Tang
- Department of Microbiology, School of Basic Medical Science, Shandong University, Jinan 250012, China
| | - Yan Zhang
- Department of Pharmacology, School of Basic Medical Science, Shandong University, Jinan 250012, China
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19
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Wu P, Wang J, Mao X, Xu H, Zhu Z. PDCD4 regulates apoptosis in human peritoneal mesothelial cells and promotes gastric cancer peritoneal metastasis. Histol Histopathol 2021; 36:447-457. [PMID: 33442866 DOI: 10.14670/hh-18-305] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
OBJECTIVE Programmed cell death 4 (PDCD4) is a tumor suppressor gene, however, the function and regulatory mechanism remain to be discovered. The connection between tumorigenesis and apoptosis is one of the most important foci of cancer research. Our study aimed to explore the connections between PDCD4-mediated apoptosis of human peritoneal mesothelial cells (HPMC) and peritoneal metastasis in gastric cancer. METHODS The PDCD4 expression in 31 pairs of HPMC and tumor tissues was assessed by immunohistochemistry and RT-PCR. In cell experiments, we monitored gastric cancer cell migration with a Transwell chamber assay when PDCD4 was silenced in HPMC. Subsequently, apoptosis of HPMC was detected by a flow cytometric assay and western blotting. After analyzing cytokines in culture supernatants from gastric cancer with enzyme-linked immunosorbent assays (ELISAs), transforming growth factor-beta 1 (TGF-β1) was abundant in the culture supernatants of gastric cancer. Then, PDCD4 expression in HMrSV5 cells was analyzed by western blotting after retreatment with different concentrations of TGF-β1. Moreover, apoptosis of peritoneal mesothelial cells treated with TGF-β1 was detected according to the above methods. RESULTS In human metastatic peritoneal tissues, the expression of PDCD4 was significantly lower than that in normal tissues. At the same time, decreased expression of PDCD4 in HPMC was associated with increased migration capacity of gastric cancer cells. Moreover, suppressing the expression of PDCD4 promoted apoptosis in mesothelial cells which may be regulated by TGF-β secreted from gastric cancer cells. CONCLUSIONS These data suggested that decreased expression of PDCD4 significantly promoted apoptosis in human peritoneal mesothelial cells, thus inducing peritoneal metastasis, and that TGF-β1 secreted from gastric cancer cells may have played a crucial role.
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Affiliation(s)
- Pei Wu
- Department of Surgical Oncology, Department of General Surgery, First Affiliated Hospital, China Medical University, Shenyang, China
| | - Jinou Wang
- Department of Pathology, Shengjing Hospital of China Medical University, Senyang, China
| | - Xiaoyun Mao
- Department of Breast Surgery, Department of Surgical Oncology, Research Unit of General Surgery, The First Affiliated Hospital of China Medical University, Shenyang, China
| | - Huimian Xu
- Department of Surgical Oncology, Department of General Surgery, First Affiliated Hospital, China Medical University, Shenyang, China
| | - Zhi Zhu
- Department of Surgical Oncology, Department of General Surgery, First Affiliated Hospital, China Medical University, Shenyang, China.
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20
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Vandewalle V, Essaghir A, Bollaert E, Lenglez S, Graux C, Schoemans H, Saussoy P, Michaux L, Valk PJM, Demoulin JB, Havelange V. miR-15a-5p and miR-21-5p contribute to chemoresistance in cytogenetically normal acute myeloid leukaemia by targeting PDCD4, ARL2 and BTG2. J Cell Mol Med 2020; 25:575-585. [PMID: 33270982 PMCID: PMC7810923 DOI: 10.1111/jcmm.16110] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2020] [Revised: 10/23/2020] [Accepted: 10/26/2020] [Indexed: 12/15/2022] Open
Abstract
Cytarabine and daunorubicin are old drugs commonly used in the treatment of acute myeloid leukaemia (AML). Refractory or relapsed disease because of chemotherapy resistance is a major issue. microRNAs (miRNAs) were incriminated in resistance. This study aimed to identify miRNAs involved in chemoresistance in AML patients and to define their target genes. We focused on cytogenetically normal AML patients with wild‐type NPM1 without FLT3‐ITD as the treatment of this subset of patients with intermediate‐risk cytogenetics is not well established. We analysed baseline AML samples by small RNA sequencing and compared the profile of chemoresistant to chemosensitive AML patients. Among the miRNAs significantly overexpressed in chemoresistant patients, we revealed miR‐15a‐5p and miR‐21‐5p as miRNAs with a major role in chemoresistance in AML. We showed that miR‐15a‐5p and miR‐21‐5p overexpression decreased apoptosis induced by cytarabine and/or daunorubicin. PDCD4, ARL2 and BTG2 genes were found to be targeted by miR‐15a‐5p, as well as PDCD4 and BTG2 by miR‐21‐5p. Inhibition experiments of the three target genes reproduced the functional effect of both miRNAs on chemosensitivity. Our study demonstrates that miR‐15a‐5p and miR‐21‐5p are overexpressed in a subgroup of chemoresistant AML patients. Both miRNAs induce chemoresistance by targeting three pro‐apoptotic genes PDCD4, ARL2 and BTG2.
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Affiliation(s)
- Virginie Vandewalle
- Department of Hematology, Cliniques Universitaires Saint-Luc, Brussels, Belgium.,Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Ahmed Essaghir
- Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Emeline Bollaert
- Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Sandrine Lenglez
- Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Carlos Graux
- Department of Hematology, CHU UCL Namur (Godinne site), Yvoir, Belgium
| | - Hélène Schoemans
- Department of Hematology, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Pascale Saussoy
- Laboratory of Hematology, Cliniques Universitaires Saint Luc, Brussels, Belgium
| | - Lucienne Michaux
- Center for Human Genetics, University Hospitals Leuven and KU Leuven, Leuven, Belgium
| | - Peter J M Valk
- Department of Hematology, Erasmus University Medical Center, Rotterdam, the Netherlands
| | - Jean-Baptiste Demoulin
- Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
| | - Violaine Havelange
- Department of Hematology, Cliniques Universitaires Saint-Luc, Brussels, Belgium.,Experimental Medicine Unit, de Duve Institute, Université Catholique de Louvain, Brussels, Belgium
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21
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Zhang K, Zhang M, Luo Z, Wen Z, Yan X. The dichotomous role of TGF-β in controlling liver cancer cell survival and proliferation. J Genet Genomics 2020; 47:497-512. [PMID: 33339765 DOI: 10.1016/j.jgg.2020.09.005] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Revised: 09/14/2020] [Accepted: 09/29/2020] [Indexed: 12/24/2022]
Abstract
Hepatocellular carcinoma (HCC) is the major form of primary liver cancer and one of the most prevalent and life-threatening malignancies globally. One of the hallmarks in HCC is the sustained cell survival and proliferative signals, which are determined by the balance between oncogenes and tumor suppressors. Transforming growth factor beta (TGF-β) is an effective growth inhibitor of epithelial cells including hepatocytes, through induction of cell cycle arrest, apoptosis, cellular senescence, or autophagy. The antitumorigenic effects of TGF-β are bypassed during liver tumorigenesis via multiple mechanisms. Furthermore, along with malignant progression, TGF-β switches to promote cancer cell survival and proliferation. This dichotomous nature of TGF-β is one of the barriers to therapeutic targeting in liver cancer. Thereafter, understanding the underlying molecular mechanisms is a prerequisite for discovering novel antitumor drugs that may specifically disable the growth-promoting branch of TGF-β signaling or restore its tumor-suppressive arm. This review summarizes how TGF-β inhibits or promotes liver cancer cell survival and proliferation, highlighting the functional switch mechanisms during the process.
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Affiliation(s)
- Kegui Zhang
- School of Biological Engineering, Huainan Normal University, Huainan, 232001, China
| | - Meiping Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang, 330006, China
| | - Zhijun Luo
- School of Basic Medical Sciences, Nanchang University, Nanchang 330006, China
| | - Zhili Wen
- Department of Gastroenterology, The Second Affiliated Hospital of Nanchang University, Nanchang, 330006, China.
| | - Xiaohua Yan
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Nanchang University, Nanchang, 330006, China; Institute of Biomedical Sciences, Nanchang University Medical College, Nanchang, 330031, China.
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22
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Lu K, Chen Q, Li M, He L, Riaz F, Zhang T, Li D. Programmed cell death factor 4 (PDCD4), a novel therapy target for metabolic diseases besides cancer. Free Radic Biol Med 2020; 159:150-163. [PMID: 32745771 DOI: 10.1016/j.freeradbiomed.2020.06.016] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Revised: 06/05/2020] [Accepted: 06/06/2020] [Indexed: 02/06/2023]
Abstract
Programmed cell death factor 4 (PDCD4) is originally described as a tumor suppressor gene that exerts antineoplastic effects by promoting apoptosis and inhibiting tumor cell proliferation, invasion, and metastasis. Several investigations have probed the aberrant expression of PDCD4 with the progression of metabolic diseases, such as polycystic ovary syndrome (PCOS), obesity, diabetes, and atherosclerosis. It has been ascertained that PDCD4 causes glucose and lipid metabolism disorders, insulin resistance, oxidative stress, chronic inflammatory response, and gut flora disorders to regulate the progression of metabolic diseases. This review aims to summarize the latest researches to uncover the structure, expression regulation, and biological functions of PDCD4 and to elucidate the regulatory mechanism of the development of tumors and metabolic diseases. This review has emphasized the understanding of the PDCD4 role and to provide new ideas for the research, diagnosis, and treatment of tumors and metabolic diseases.
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Affiliation(s)
- Kaikai Lu
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Qian Chen
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Mengda Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Lei He
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Farooq Riaz
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Tianyun Zhang
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China
| | - Dongmin Li
- Department of Biochemistry and Molecular Biology, School of Basic Medical Sciences, Xi'an Jiaotong University Health Science Center, Xi'an, Shaanxi, 710061, PR China; Key Laboratory of Environment and Genes Related to Diseases, Ministry of Education, Xi'an, Shaanxi, 710061, PR China.
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Di Paolo A, Eastman G, Mesquita-Ribeiro R, Farias J, Macklin A, Kislinger T, Colburn N, Munroe D, Sotelo Sosa JR, Dajas-Bailador F, Sotelo-Silveira JR. PDCD4 regulates axonal growth by translational repression of neurite growth-related genes and is modulated during nerve injury responses. RNA (NEW YORK, N.Y.) 2020; 26:1637-1653. [PMID: 32747606 PMCID: PMC7566564 DOI: 10.1261/rna.075424.120] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2020] [Accepted: 07/20/2020] [Indexed: 05/07/2023]
Abstract
Programmed cell death 4 (PDCD4) protein is a tumor suppressor that inhibits translation through the mTOR-dependent initiation factor EIF4A, but its functional role and mRNA targets in neurons remain largely unknown. Our work identified that PDCD4 is highly expressed in axons and dendrites of CNS and PNS neurons. Using loss- and gain-of-function experiments in cortical and dorsal root ganglia primary neurons, we demonstrated the capacity of PDCD4 to negatively control axonal growth. To explore PDCD4 transcriptome and translatome targets, we used Ribo-seq and uncovered a list of potential targets with known functions as axon/neurite outgrowth regulators. In addition, we observed that PDCD4 can be locally synthesized in adult axons in vivo, and its levels decrease at the site of peripheral nerve injury and before nerve regeneration. Overall, our findings demonstrate that PDCD4 can act as a new regulator of axonal growth via the selective control of translation, providing a target mechanism for axon regeneration and neuronal plasticity processes in neurons.
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Affiliation(s)
- Andrés Di Paolo
- Departamento de Proteínas y Ácidos Nucleicos, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo 11600, Uruguay
| | - Guillermo Eastman
- Departamento de Genómica, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo 11600, Uruguay
| | | | - Joaquina Farias
- Departamento de Genómica, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo 11600, Uruguay
| | - Andrew Macklin
- Princess Margaret Cancer Centre, University Health Network, Toronto M5G 1L7, Canada
| | - Thomas Kislinger
- Princess Margaret Cancer Centre, University Health Network, Toronto M5G 1L7, Canada
- University of Toronto, Department of Medical Biophysics, Toronto M5S 1A1, Canada
| | - Nancy Colburn
- Former Chief of Laboratory of Cancer Prevention at the National Cancer Institute-NIH at Frederick, Maryland 21702, USA
| | - David Munroe
- Former Laboratory of Molecular Technologies, LEIDOS at Frederick National Laboratory for Cancer Research, Frederick, Maryland 21702, USA
| | - José R Sotelo Sosa
- Departamento de Proteínas y Ácidos Nucleicos, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo 11600, Uruguay
| | | | - José R Sotelo-Silveira
- Departamento de Genómica, Instituto de Investigaciones Biológicas Clemente Estable, Montevideo 11600, Uruguay
- Departamento de Biología Celular y Molecular, Facultad de Ciencias UdelaR, Montevideo 11400, Uruguay
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24
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Sobolewski C, Abegg D, Berthou F, Dolicka D, Calo N, Sempoux C, Fournier M, Maeder C, Ay AS, Clavien PA, Humar B, Dufour JF, Adibekian A, Foti M. S100A11/ANXA2 belongs to a tumour suppressor/oncogene network deregulated early with steatosis and involved in inflammation and hepatocellular carcinoma development. Gut 2020; 69:1841-1854. [PMID: 31919231 DOI: 10.1136/gutjnl-2019-319019] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 12/19/2019] [Accepted: 12/20/2019] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Hepatocellular carcinoma (HCC) development occurs with non-alcoholic fatty liver disease (NAFLD) in the absence of cirrhosis and with an increasing incidence due to the obesity pandemic. Mutations of tumour suppressor (TS) genes and oncogenes (ONC) have been widely characterised in HCC. However, mounting evidence indicates that non-genomic alterations of TS/ONC occur early with NAFLD, thereby potentially promoting hepatocarcinogenesis in an inflammatory/fibrotic context. The aim of this study was to identify and characterise these alterations. DESIGN The proteome of steatotic liver tissues from mice spontaneously developing HCC was analysed. Alterations of TSs/ONCs were further investigated in various mouse models of NAFLD/HCC and in human samples. The inflammatory, fibrogenic and oncogenic functions of S100A11 were assessed through in vivo, in vitro and ex-vivo analyses. RESULTS A whole set of TSs/ONCs, respectively, downregulated or upregulated was uncovered in mice and human with NAFLD. Alterations of these TSs/ONCs were preserved or even exacerbated in HCC. Among them, overexpression of S100A11 was associated with high-grade HCC and poor prognosis. S100A11 downregulation in vivo significantly restrains the development of inflammation and fibrosis in mice fed a choline/methionine-deficient diet. Finally, in vitro and ex-vivo analyses revealed that S100A11 is a marker of hepatocyte de-differentiation, secreted by cancer cells, and promoting cell proliferation and migration. CONCLUSION Cellular stress associated with NAFLD triggers non-genomic alterations of a whole network of TSs/ONCs fostering hepatocarcinogenesis. Among those, overexpression of the oncogenic factor S100A11 promotes inflammation/fibrosis in vivo and is significantly associated with high-grade HCC with poor prognosis.
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Affiliation(s)
- Cyril Sobolewski
- Department of Cell Physiology and Metabolism, University of Geneva Faculty of Medicine, Geneve, GE, Switzerland
| | - Daniel Abegg
- Department of Chemistry, The Scripps Research Institute, Jupiter, Florida, USA
| | - Flavien Berthou
- Department of Cell Physiology and Metabolism, University of Geneva Faculty of Medicine, Geneve, GE, Switzerland
| | - Dobrochna Dolicka
- Department of Cell Physiology and Metabolism, University of Geneva Faculty of Medicine, Geneve, GE, Switzerland
| | - Nicolas Calo
- Department of Cell Physiology and Metabolism, University of Geneva Faculty of Medicine, Geneve, GE, Switzerland
| | - Christine Sempoux
- Department of Clinical Pathology, Centre Hospitalier Universitaire Vaudois, Lausanne, Switzerland
| | - Margot Fournier
- Department of Cell Physiology and Metabolism, University of Geneva Faculty of Medicine, Geneve, GE, Switzerland
| | - Christine Maeder
- Department of Cell Physiology and Metabolism, University of Geneva Faculty of Medicine, Geneve, GE, Switzerland
| | - Anne-Sophie Ay
- Department of Cell Physiology and Metabolism, University of Geneva Faculty of Medicine, Geneve, GE, Switzerland
| | - Pierre-Alain Clavien
- Visceral and Transplantation Surgery, University Hospital of Zurich, Zurich, Switzerland
| | - Bostjan Humar
- Department of Surgery, University Hospital Zurich, Zurich, Switzerland
| | - Jean-François Dufour
- Department of Hepatology and Clinical Research, University of Bern, Bern, Switzerland
| | - Alexander Adibekian
- Department of Chemistry, The Scripps Research Institute, Jupiter, Florida, USA
| | - Michelangelo Foti
- Department of Cell Physiology and Metabolism, University of Geneva Faculty of Medicine, Geneve, GE, Switzerland
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25
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Hu J, Wang Z, Wang J, Jian Y, Dai J, Wang X, Xiong W. MicroRNA-182 Promotes Cell Migration by Targeting Programmed Cell Death 4 in Hepatocellular Carcinoma Cells. Onco Targets Ther 2020; 13:9159-9167. [PMID: 32982304 PMCID: PMC7502386 DOI: 10.2147/ott.s258251] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Accepted: 08/17/2020] [Indexed: 01/30/2023] Open
Abstract
Purpose Hepatocellular carcinoma (HCC) is the most common primary liver tumor and the third greatest cause of cancer-related death worldwide. Programmed cell death 4 (PDCD4) was reported as a potential tumor-suppressor in hepatocarcinogenesis. However, relatively little is known about mechanisms that regulate PDCD4 expression in HCC. The aim of the present study is to investigate the expression of PDCD4 and miR-182 in human HCC cell lines and clinical HCC specimens and determine whether PDCD4 is a direct target of miR-182 in HCC cell lines. Materials The expression of miR-182 and PDCD4 in human HCC cell lines and HCC tissues were examined using qRT-PCR and Western blot method. Transwell and wound healing assays were carried out to explore the influence of miR-182 on hepatoma cells migration. A luciferase reporter assay was conducted to confirm target association. Results In our research, we found that PDCD4 was downregulated, whereas miR-182 was upregulated in liver cancer cell lines and HCC tissues. Transwell and wound healing assays illustrated that miR-182 contributed to migration activities of liver cancer cell lines. Loss or increase of miR-182 can lead to a negative expression of PDCD4 protein level. The luciferase reporter assay showed that PDCD4 is a direct target of miR-182. Conclusion All these findings suggest that miR-182 may act as an oncogenic role in liver cancer cells by directly and negatively regulating expression of PDCD4.
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Affiliation(s)
- Junwei Hu
- Department of Gastroenterology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, People's Republic of China.,Department of Digestive Endoscopy, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, People's Republic of China
| | - Zeyu Wang
- Department of Gastroenterology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, People's Republic of China
| | - Jinjun Wang
- Department of Gerontology, Shanghai Putuo Central Hospital Affiliated to Shanghai Traditional Chinese Medicine University, Shanghai 200062, People's Republic of China
| | - Yicheng Jian
- Department of Gastroenterology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, People's Republic of China.,Department of Digestive Endoscopy, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, People's Republic of China
| | - Jiarun Dai
- Department of Gastroenterology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, People's Republic of China.,Department of Digestive Endoscopy, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, People's Republic of China
| | - Xiaoping Wang
- Department of Gastroenterology, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, People's Republic of China.,Department of Digestive Endoscopy, Shanghai University of Medicine & Health Sciences Affiliated Zhoupu Hospital, Shanghai 201318, People's Republic of China
| | - Wujun Xiong
- Department of Hepatology, Shanghai East Hospital, School of Medicine, Tongji University, Shanghai 200120, People's Republic of China
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Low GAS5 expression may predict poor survival and cisplatin resistance in cervical cancer. Cell Death Dis 2020; 11:531. [PMID: 32661236 PMCID: PMC7359315 DOI: 10.1038/s41419-020-2735-2] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 06/21/2020] [Accepted: 06/25/2020] [Indexed: 12/19/2022]
Abstract
Cisplatin resistance is a major challenge in cervical cancer (CC) chemotherapy. Growth arrest-specific 5 (GAS5) has been reported to be a tumour suppressor gene in CC. However, the mechanism of GAS5 in chemoresistance remains undetermined. Our research evaluated GAS5 expression in normal and CC tissues by qPCR and in situ hybridization (ISH). Statistical analysis was conducted to analyse the association of GAS5 expression with survival. Biochemical methods were used to screen upstream and downstream regulators of GAS5. Then, interactions were confirmed by ChIP, RNA pull-down, RNA immunoprecipitation (RIP), dual-luciferase reporter and real-time PCR assays. The cisplatin sensitivity of GAS5-overexpressing CC cells was demonstrated in vitro and in vivo. The results showed that low GAS5 expression was correlated with poor overall survival. Mechanistically, GAS5 was transcriptionally modulated by P-STAT3 and served as a competing endogenous RNA (ceRNA) of miR-21 to indirectly affect cisplatin sensitivity through PDCD4 regulation in CC cells. Animal studies confirmed that GAS5 enhanced cisplatin sensitivity and promoted PDCD4 expression in vivo. GAS5 was regulated by P-STAT3 and affected the sensitivity of CC to cisplatin-based chemotherapy through the miR-21/PDCD4 axis. This result may provide new insight into cisplatin-based therapy.
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27
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Ashrafizadeh M, Najafi M, Mohammadinejad R, Farkhondeh T, Samarghandian S. Flaming the fight against cancer cells: the role of microRNA-93. Cancer Cell Int 2020; 20:277. [PMID: 32612456 PMCID: PMC7325196 DOI: 10.1186/s12935-020-01349-x] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2019] [Accepted: 06/15/2020] [Indexed: 12/14/2022] Open
Abstract
There have been attempts to develop novel anti-tumor drugs in cancer therapy. Although satisfying results have been observed at a consequence of application of chemotherapeutic agents, the cancer cells are capable of making resistance into these agents. This has forced scientists into genetic manipulation as genetic alterations are responsible for generation of a high number of cancer cells. MicroRNAs (miRs) are endogenous, short non-coding RNAs that affect target genes at the post-transcriptional level. Increasing evidence reveals the potential role of miRs in regulation of biological processes including angiogenesis, metabolism, cell proliferation, cell division, and cell differentiation. Abnormal expression of miRs is associated with development of a number of pathologic events, particularly cancer. MiR-93 plays a significant role in both physiological and pathological mechanisms. At the present review, we show how this miR dually affects the proliferation and invasion of cancer cells. Besides, we elucidate the oncogenesis or oncosuppressor function of miR-93.
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Affiliation(s)
- Milad Ashrafizadeh
- Department of Basic Science, Faculty of Veterinary Medicine, University of Tabriz, Tabriz, Iran
| | - Masoud Najafi
- Radiology and Nuclear Medicine Department, School of Paramedical Sciences, Kermanshah University of Medical Sciences, Kermanshah, Iran
| | - Reza Mohammadinejad
- Pharmaceutics Research Center, Institute of Neuropharmacology, Kerman University of Medical Sciences, Kerman, Iran
| | - Tahereh Farkhondeh
- Cardiovascular Diseases Research Center, Birjand University of Medical Sciences, Birjand, Iran
| | - Saeed Samarghandian
- Healthy Ageing Research Center, Neyshabur University of Medical Sciences, Neyshabur, Iran
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28
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Yan Y, Wang W, Liu Z, Lv X, Li M, Yang W, Wang L, Song L. A novel programmed cell death protein 4 negatively regulates CgIL17-5 expression in hemocytes of oyster Pacific oyster (Crassostrea gigas). FISH & SHELLFISH IMMUNOLOGY 2020; 99:594-602. [PMID: 32109614 DOI: 10.1016/j.fsi.2020.02.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2019] [Revised: 02/12/2020] [Accepted: 02/17/2020] [Indexed: 06/10/2023]
Abstract
The programmed cell death protein 4 (PDCD4) is a newly defined transcriptional and translational inhibitor, which plays a key role in regulating the synthesis of inflammatory cytokines in vertebrates species. In the present study, the full-length cDNA of PDCD4 from oyster Crassostrea gigas (designed as CgPDCD4) was identified to explore its possible involvement in immune response. The open reading frame of pdcd4 gene was of 1344 bp encoding a polypeptide of 447 amino acids with two conserved MA-3 domains. The deduced amino acid sequence of CgPDCD4 shared 60.18% similarity with PDCD4 from Mizuhopecten yessoensis. The mRNA transcripts of CgPDCD4 could be detected in all the tested tissues with a higher expression level in adductor muscle and hemocytes. The mRNA expression of CgPDCD4 in hemocytes was significantly down-regulated at 3 h and 6 h (0.61-fold and 0.42-fold of that in PBS group, p < 0.01, respectively) after LPS stimulation. In hemocytes, CgPDCD4 protein was found to be mainly located in the cytoplasm. After the mRNA expression of CgPDCD4 in hemocytes was knocked down (0.40-fold of that in EGFP-RNAi group) by CgPDCD4 dsRNA (dsCgPDCD4) injection, the CgIL17-5 transcripts were up-regulated (20.11-fold of that in PBS group, p < 0.01) post LPS stimulation, which was significantly higher than that in dsEGFP-injected oysters (7.06-fold of that in PBS group, p < 0.01). Meanwhile, the nuclear translocation of CgRel (homologue of Rel/NF-κB) was significantly enhanced (about 1.36-fold of that in PBS group, p < 0.01), but it was similar as that in EGFP-RNAi group (about 1.52-fold of that in PBS group, p < 0.01) after LPS stimulation. All the results suggested that CgPDCD4 in oysters played the same role as PDCD4 of vertebrates in negatively regulating the production of interleukin in immune response, but the underpinning signal pathway was not conserved during evolution.
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Affiliation(s)
- Yunchen Yan
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Weilin Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Zhaoqun Liu
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Xiaojing Lv
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Meijia Li
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Wen Yang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China
| | - Lingling Wang
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Laboratory of Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China; Dalian Key Laboratory of Aquatic Animal Diseases Prevention and Control, Dalian Ocean University, Dalian, 116023, China
| | - Linsheng Song
- Liaoning Key Laboratory of Marine Animal Immunology, Dalian Ocean University, Dalian, 116023, China; Laboratory of Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266235, China; Liaoning Key Laboratory of Marine Animal Immunology & Disease Control, Dalian Ocean University, Dalian, 116023, China.
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PDCD4 controls the G1/S-phase transition in a telomerase-immortalized epithelial cell line and affects the expression level and translation of multiple mRNAs. Sci Rep 2020; 10:2758. [PMID: 32066800 PMCID: PMC7026441 DOI: 10.1038/s41598-020-59678-w] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 12/27/2019] [Indexed: 12/11/2022] Open
Abstract
PDCD4, the protein encoded by the tumor suppressor gene PDCD4 (programmed cell death 4) has been implicated in the control of cellular transcription and translation by modulating the activity of specific transcription factors and suppressing the translation of mRNAs with structured 5′-UTRs. Most studies of human PDCD4 have employed tumor cell lines, possibly resulting in a biased picture of its role in normal cells. Here, we have studied the function of PDCD4 in a telomerase-immortalized human epithelial cell line. We show for the first time that PDCD4 is required for the G1/S-transition, demonstrating its crucial role in the cell cycle. Inhibition of p53-dependent activation of p21WAF1/CIP1 overrides the requirement for PDCD4 for the G1/S-transition, suggesting that PDCD4 counteracts basal p53 activity to prevent activation of the G1/S checkpoint by p53. Transcriptome and ribosome profiling data show that silencing of PDCD4 changes the expression levels and translation of many mRNAs, providing an unbiased view of the cellular processes that are affected by PDCD4 in an epithelial cell line. Our data identify PDCD4 as a key regulator of cell cycle- and DNA-related functions that are inhibited when it is silenced, suggesting that decreased expression of PDCD4 might contribute to tumor development by compromising genomic integrity.
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Degradation of the Tumor Suppressor PDCD4 Is Impaired by the Suppression of p62/SQSTM1 and Autophagy. Cells 2020; 9:cells9010218. [PMID: 31952347 PMCID: PMC7016974 DOI: 10.3390/cells9010218] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2019] [Revised: 01/10/2020] [Accepted: 01/11/2020] [Indexed: 02/07/2023] Open
Abstract
PDCD4 (programmed cell death 4) is a tumor suppressor that plays a crucial role in multiple cellular functions, such as the control of protein synthesis and transcriptional control of some genes, the inhibition of cancer invasion and metastasis. The expression of this protein is controlled by synthesis, such as via transcription and translation, and degradation by the ubiquitin-proteasome system. The mitogens, known as tumor promotors, EGF (epidermal growth factor) and TPA (12-O-tetradecanoylphorbol-13-acetate) stimulate the degradation of PDCD4 protein. However, the whole picture of PDCD4 degradation mechanisms is still unclear, we therefore investigated the relationship between PDCD4 and autophagy. The proteasome inhibitor MG132 and the autophagy inhibitor bafilomycin A1 were found to upregulate the PDCD4 levels. PDCD4 protein levels increased synergistically in the presence of both inhibitors. Knockdown of p62/SQSTM1 (sequestosome-1), a polyubiquitin binding partner, also upregulated the PDCD4 levels. P62 and LC3 (microtubule-associated protein 1A/1B-light chain 3)-II were co-immunoprecipitated by an anti-PDCD4 antibody. Colocalization particles of PDCD4, p62 and the autophagosome marker LC3 were observed and the colocalization areas increased in the presence of autophagy and/or proteasome inhibitor(s) in Huh7 cells. In ATG (autophagy related) 5-deficient Huh7 cells in which autophagy was impaired, the PDCD4 levels were increased at the basal levels and upregulated in the presence of autophagy inhibitors. Based on the above findings, we concluded that after phosphorylation in the degron and ubiquitination, PDCD4 is degraded by both the proteasome and autophagy systems.
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Gordeeva O. TGFβ Family Signaling Pathways in Pluripotent and Teratocarcinoma Stem Cells' Fate Decisions: Balancing Between Self-Renewal, Differentiation, and Cancer. Cells 2019; 8:cells8121500. [PMID: 31771212 PMCID: PMC6953027 DOI: 10.3390/cells8121500] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2019] [Revised: 11/19/2019] [Accepted: 11/21/2019] [Indexed: 12/11/2022] Open
Abstract
The transforming growth factor-β (TGFβ) family factors induce pleiotropic effects and are involved in the regulation of most normal and pathological cellular processes. The activity of different branches of the TGFβ family signaling pathways and their interplay with other signaling pathways govern the fine regulation of the self-renewal, differentiation onset and specialization of pluripotent stem cells in various cell derivatives. TGFβ family signaling pathways play a pivotal role in balancing basic cellular processes in pluripotent stem cells and their derivatives, although disturbances in their genome integrity induce the rearrangements of signaling pathways and lead to functional impairments and malignant transformation into cancer stem cells. Therefore, the identification of critical nodes and targets in the regulatory cascades of TGFβ family factors and other signaling pathways, and analysis of the rearrangements of the signal regulatory network during stem cell state transitions and interconversions, are key issues for understanding the fundamental mechanisms of both stem cell biology and cancer initiation and progression, as well as for clinical applications. This review summarizes recent advances in our understanding of TGFβ family functions in naїve and primed pluripotent stem cells and discusses how these pathways are involved in perturbations in the signaling network of malignant teratocarcinoma stem cells with impaired differentiation potential.
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Affiliation(s)
- Olga Gordeeva
- Kol'tsov Institute of Developmental Biology, Russian Academy of Sciences, 26 Vavilov str., 119334 Moscow, Russia
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Singh P, Singh AP, Tripathi SK, Kumar V, Sane AP. Petal abscission in roses is associated with the activation of a truncated version of the animal PDCD4 homologue, RbPCD1. PLANT SCIENCE : AN INTERNATIONAL JOURNAL OF EXPERIMENTAL PLANT BIOLOGY 2019; 288:110242. [PMID: 31521226 DOI: 10.1016/j.plantsci.2019.110242] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 08/27/2019] [Indexed: 06/10/2023]
Abstract
Abscission is a developmental process that leads to shedding of organs not needed by the plant. Apart from wall hydrolysis, the cells of the abscission zone (AZ) are also believed to undergo programmed cell death (PCD). We show that ethylene-induced petal abscission in Rosa bourboniana is accompanied with the activation of RbPCD1 (PROGRAMMED CELL DEATH LIKE 1) encoding a protein of 78 amino acids. Its expression increases during natural and ethylene-induced petal abscission. Its transcription in most tissues is up-regulated by ethylene. RbPCD1 shows similarity to the N-terminal domain of animal PDCD4 (PROGRAMMED CELL DEATH PROTEIN 4) proteins that are activated during apoptosis and function as transcriptional and translational repressors. RbPCD1 resides in the nucleus and cytoplasm and acts as a transcriptional repressor. Constitutive expression of RbPCD1 in transgenic Arabidopsis is seedling lethal. Heat-induced expression of RbPCD1 under the soybean heat-shock promoter affects leaf function, inflorescence development, silique formation, seed yield and reduces survival. Nuclear localization of RbPCD1 is necessary for manifestation of its effects. RbPCD1 may be necessary to mediate some of the ethylene-induced changes during abscission and senescence in specific tissues.
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Affiliation(s)
- Priya Singh
- Plant Gene Expression Lab, CSIR-National Botanical Research Institute (Council of Scientific and Industrial Research), Lucknow, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Amar Pal Singh
- Plant Gene Expression Lab, CSIR-National Botanical Research Institute (Council of Scientific and Industrial Research), Lucknow, 226001, India
| | - Siddharth Kaushal Tripathi
- Plant Gene Expression Lab, CSIR-National Botanical Research Institute (Council of Scientific and Industrial Research), Lucknow, 226001, India
| | - Vinod Kumar
- Plant Gene Expression Lab, CSIR-National Botanical Research Institute (Council of Scientific and Industrial Research), Lucknow, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India
| | - Aniruddha P Sane
- Plant Gene Expression Lab, CSIR-National Botanical Research Institute (Council of Scientific and Industrial Research), Lucknow, 226001, India; Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, 201002, India.
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Li Y, Wang X, Wang X, Wan L, Liu Y, Shi Y, Zhang L, Fang Z, Wei Z. PDCD4 suppresses proliferation, migration, and invasion of endometrial cells by inhibiting autophagy and NF-κB/MMP2/MMP9 signal pathway. Biol Reprod 2019; 99:360-372. [PMID: 29912279 DOI: 10.1093/biolre/ioy052] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2017] [Accepted: 06/14/2018] [Indexed: 11/12/2022] Open
Abstract
Endometriosis (EM) is a kind of estrogen-dependent disease in reproductive-age women. Ovarian EM is the most common type. Although EM is a benign disease, it shares many similar features with cancers. Programmed cell death 4 (PDCD4), a newly identified tumor suppressor, plays an important role in inhibiting tumorigenesis and tumor progression at the transcriptional and translational levels. To explore the roles of PDCD4 in EM, we detected the expression of PDCD4 in control endometrium and eutopic/ectopic endometrium of ovarian EM patients, and analyzed the effects of PDCD4 on the biological behaviors of endometrial cell lines and primary endometrial cells. The results demonstrated that PDCD4 was downregulated in eutopic and ectopic endometrium of EM patients compared with control endometrium. PDCD4 effectively inhibited the proliferation and colony-forming ability of endometrial cells maybe by inhibiting cell autophagy. In addition, PDCD4 also suppressed the migration and invasion ability of endometrial cells, the mechanism may be related to NF-κB/MMP2/MMP9 signal pathway. Taken together, these results suggest that PDCD4 could be involved in the pathogenesis of EM, and provide a novel approach to target the aberrant PDCD4 expression in EM.
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Affiliation(s)
- Yue Li
- Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Xiaoyan Wang
- Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Xishuang Wang
- Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Lu Wan
- Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Yanping Liu
- Department of Gynecology and Obstetrics, Jinan Central Hospital affiliated to Shandong University, Jinan, Shandong, P. R. China
| | - Yongyu Shi
- Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Lining Zhang
- Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China
| | - Zhenghui Fang
- Department of Gynecology and Obstetrics, Jinan Central Hospital affiliated to Shandong University, Jinan, Shandong, P. R. China
| | - Zengtao Wei
- Department of Immunology, School of Basic Medical Sciences, Shandong University, Jinan, Shandong, P. R. China.,Department of Gynecology and Obstetrics, Jinan Central Hospital affiliated to Shandong University, Jinan, Shandong, P. R. China.,Department of Gynecology and Obstetrics, Clinical Medical School, Shandong University, Jinan, Shandong, P. R. China
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Zhao M, Zhu N, Hao F, Song Y, Wang Z, Ni Y, Ding L. The Regulatory Role of Non-coding RNAs on Programmed Cell Death Four in Inflammation and Cancer. Front Oncol 2019; 9:919. [PMID: 31620370 PMCID: PMC6759660 DOI: 10.3389/fonc.2019.00919] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Accepted: 09/03/2019] [Indexed: 12/13/2022] Open
Abstract
Programmed cell death 4 (PDCD4) is a tumor suppressor gene implicated in many cellular functions, including transcription, translation, apoptosis, and the modulation of different signal transduction pathways. The downstream mechanisms of PDCD4 have been well-discussed, but its upstream regulators have not been systematically summarized. Noncoding RNAs (ncRNAs) are gene transcripts with no protein-coding potential but play a pivotal role in the regulation of the pathogenesis of solid tumors, cardiac injury, and inflamed tissue. In recent studies, many ncRNAs, especially microRNAs (miRNAs) and long noncoding RNAs (lncRNAs), were found to interact with PDCD4 to manipulate its expression through transcriptional regulation and function as oncogenes or tumor suppressors. For example, miR-21, as a classic oncogene, was identified as the key regulator of PDCD4 by targeting its 3′-untranslated region (UTR) to promote tumor proliferation, migration, and invasion in colon, breast, and bladder carcinoma. Therefore, we reviewed the recently emerging pleiotropic regulation of PDCD4 by ncRNAs in cancer and inflammatory disorders and aimed to shed light on the mechanisms of associated diseases, which could be conducive to the development of novel treatment strategies for PDCD4-induced diseases.
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Affiliation(s)
- Mengxiang Zhao
- Central Laboratory Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Nisha Zhu
- Central Laboratory Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Fengyao Hao
- Central Laboratory Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Yuxian Song
- Central Laboratory Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Zhiyong Wang
- Department of Oral and Maxillofacial Surgery, Nanjing Stomatological Hospital, Nanjing, China
| | - Yanhong Ni
- Central Laboratory Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Liang Ding
- Central Laboratory Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
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MicroRNA (miRNA)-to-miRNA Regulation of Programmed Cell Death 4 (PDCD4). Mol Cell Biol 2019; 39:MCB.00086-19. [PMID: 31235478 PMCID: PMC6712940 DOI: 10.1128/mcb.00086-19] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2019] [Accepted: 06/08/2019] [Indexed: 12/11/2022] Open
Abstract
The regulation of tumor suppressor genes by microRNAs (miRNAs) is often demonstrated as a one-miRNA-to-one-target relationship. However, given the large number of miRNA sites within a 3' untranslated region (UTR), most targets likely undergo miRNA cooperation or combinatorial action. Programmed cell death 4 (PDCD4), an important tumor suppressor, prevents neoplastic events and is commonly downregulated in cancer. This study investigates the relationship between miRNA 21 (miR-21) and miR-499 in regulating PDCD4. This was explored using miRNA overexpression, mutational analysis of the PDCD4 3' UTR to assess regulation at each miRNA site, and 50% inhibitory concentration (IC50) calculations for combinatorial behavior. We demonstrate that the first miR-499 binding site within PDCD4 is inactive, but the two remaining sites are both required for PDCD4 suppression. Additionally, the binding of miR-21 to PDCD4 influenced miR-499 activity through an increase in its silencing potency and stabilization of its mature form. Furthermore, adjoining miRNA sites more than 35 nucleotides (nt) apart could potentially regulate thousands of 3' UTRs, similar to that observed between miR-21 and miR-499. The regulation of PDCD4 serves as a unique example of regulatory action by multiple miRNAs. This relationship was predicted to occur on thousands of targets and may represent a wider mode of miRNA regulation.
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Hatab HM, Abdel Hamid FF, Soliman AF, Al-Shafie TA, Ismail YM, El-Houseini ME. A combined treatment of curcumin, piperine, and taurine alters the circulating levels of IL-10 and miR-21 in hepatocellular carcinoma patients: a pilot study. J Gastrointest Oncol 2019; 10:766-776. [PMID: 31392057 DOI: 10.21037/jgo.2019.03.07] [Citation(s) in RCA: 35] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Background Investigating and evaluating possible alternative therapeutic strategies to control hepatocellular carcinoma (HCC) is a critical need because of its high prevalence and being one of the most lethal cancers. Curcumin and taurine showed potent anti-tumor activities in pre-clinical and clinical studies by targeting multiple pathways. Thus, this study was designed to assess the effect of a combined treatment consisted of curcumin, piperine, and taurine on circulating levels of interleukin-10 (IL-10), and microRNAs miR-141 and miR-21. Methods Twenty eligible HCC patients administrated an oral dose of 4 g curcumin, 40 mg piperine, and 500 mg taurine daily for three successive treatment cycles, each was a 30-day. The level of IL-10 along with the expression levels of miR-141, and miR-21 were monitored in serum before starting the treatment and after each cycle. Patients were followed-up for a period of 24 months. Results The combined treatment was able to produce a significant decrease in the levels of serum IL-10, and miR-21 while it resulted in a non-significant up-regulation of serum miR-141 expression level. At the end of the follow-up period, the median overall survival (OS) rate was found to be 17.00 months with a worse OS in patients with high baseline levels of circulating IL-10 and miR-21 compared to those with low levels. In contrast, a low baseline level of circulating miR-141 was associated with poor prognosis. Conclusions The combined treatment may be able to increase the OS rate by altering the circulating level of IL-10 and miR-21.
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Affiliation(s)
- Hala M Hatab
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Fatma F Abdel Hamid
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Ahmed F Soliman
- Biochemistry Department, Faculty of Science, Ain Shams University, Cairo, Egypt
| | - Tamer A Al-Shafie
- Pharmacology and Therapeutics Department, Faculty of Pharmacy and Drug Manufacturing, Pharos University in Alexandria, Alexandria, Egypt
| | - Yahia M Ismail
- Medical Oncology Department, National Cancer Institute, Cairo University, Cairo, Egypt
| | - Motawa E El-Houseini
- Cancer Biology Department, National Cancer Institute, Cairo University, Cairo, Egypt
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Matsuhashi S, Manirujjaman M, Hamajima H, Ozaki I. Control Mechanisms of the Tumor Suppressor PDCD4: Expression and Functions. Int J Mol Sci 2019; 20:ijms20092304. [PMID: 31075975 PMCID: PMC6539695 DOI: 10.3390/ijms20092304] [Citation(s) in RCA: 84] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 05/05/2019] [Accepted: 05/07/2019] [Indexed: 02/06/2023] Open
Abstract
PDCD4 is a novel tumor suppressor to show multi-functions inhibiting cell growth, tumor invasion, metastasis, and inducing apoptosis. PDCD4 protein binds to the translation initiation factor eIF4A, some transcription factors, and many other factors and modulates the function of the binding partners. PDCD4 downregulation stimulates and PDCD4 upregulation inhibits the TPA-induced transformation of cells. However, PDCD4 gene mutations have not been found in tumor cells but gene expression was post transcriptionally downregulated by micro environmental factors such as growth factors and interleukins. In this review, we focus on the suppression mechanisms of PDCD4 protein that is induced by the tumor promotors EGF and TPA, and in the inflammatory conditions. PDCD4-protein is phosphorylated at 2 serines in the SCFβTRCP ubiquitin ligase binding sequences via EGF and/or TPA induced signaling pathway, ubiquitinated, by the ubiquitin ligase and degraded in the proteasome system. The PDCD4 protein synthesis is inhibited by microRNAs including miR21.
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Affiliation(s)
- Sachiko Matsuhashi
- Department of Internal Medicine, Saga Medical School, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan.
| | - M Manirujjaman
- Department of Internal Medicine, Saga Medical School, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan.
| | - Hiroshi Hamajima
- Saga Food & Cosmetics Laboratory, Division of Food Manufacturing Industry Promotion, SAGA Regional Industry Support Center, 114 Yaemizo, Nabesima-Machi, Saga 849-0932, Japan.
| | - Iwata Ozaki
- Health Administration Center, Saga Medical School, Saga University, 5-1-1 Nabeshima, Saga 849-8501, Japan.
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MiR-208a-3p functions as an oncogene in colorectal cancer by targeting PDCD4. Biosci Rep 2019; 39:BSR20181598. [PMID: 30914452 PMCID: PMC6465200 DOI: 10.1042/bsr20181598] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2018] [Revised: 01/08/2019] [Accepted: 01/18/2019] [Indexed: 01/08/2023] Open
Abstract
Accumulating evidences have shown microRNAs (miRNAs) play important roles in the progression of human cancers including colorectal cancer (CRC). However, the biological function and molecular mechanism of miRNAs in CRC still remains to be further investigated. Using microarray, we found and confirmed that miR-208a-3p was up-regulated in CRC tissues. Its high expression was statistically associated with distant metastasis and TNM stage. Functional assays revealed inhibition of miR-208a-3p suppressed proliferation, invasion and migration, and induced cell apoptosis of CRC cells. Moreover, we identified programmed cell death protein 4 (PDCD4), a well-known tumor suppressor, is a direct target of miR-208a-3p. We also found that overexpression of PDCD4 suppressed cell proliferation, invasion, and migration. Importantly, silencing of PDCD4 efficiently abrogated the promoting effects on CRC cells proliferation, invasion, and migration caused by inhibition of miR-208a-3p. Our findings confirmed the oncogenic role of miR-208a-3p via targeting PDCD4 in CRC, identifying miR-208a-3p as a potential diagnosis and therapeutic biomarker for CRC.
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Li C, Du L, Ren Y, Liu X, Jiao Q, Cui D, Wen M, Wang C, Wei G, Wang Y, Ji A, Wang Q. SKP2 promotes breast cancer tumorigenesis and radiation tolerance through PDCD4 ubiquitination. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2019; 38:76. [PMID: 30760284 PMCID: PMC6375223 DOI: 10.1186/s13046-019-1069-3] [Citation(s) in RCA: 62] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/16/2018] [Accepted: 01/30/2019] [Indexed: 12/20/2022]
Abstract
Background S-phase kinase-associated protein 2 (SKP2) is an oncogene and cell cycle regulator that specifically recognizes phosphorylated cell cycle regulator proteins and mediates their ubiquitination. Programmed cell death protein 4 (PDCD4) is a tumor suppressor gene that plays a role in cell apoptosis and DNA-damage response via interacting with eukaryotic initiation factor-4A (eIF4A) and P53. Previous research showed SKP2 may interact with PDCD4, however the relationship between SKP2 and PDCD4 is unclear. Methods To validate the interaction between SKP2 and PDCD4, mass spectrometric analysis and reciprocal co-immunoprecipitation (Co-IP) experiments were performed. SKP2 stably overexpressed or knockdown breast cancer cell lines were established and western blot was used to detect proteins changes before and after radiation. In vitro and in vivo experiments were performed to verify whether SKP2 inhibits cell apoptosis and promotes DNA-damage response via PDCD4 suppression. SMIP004 was used to test the effect of radiotherapy combined with SKP2 inhibitor. Results We found that SKP2 remarkably promoted PDCD4 phosphorylation, ubiquitination and degradation. SKP2 promoted cell proliferation, inhibited cell apoptosis and enhanced the response to DNA-damage via PDCD4 suppression in breast cancer. SKP2 and PDCD4 showed negative correlation in human breast cancer tissues. Radiotherapy combine with SKP2 inhibitor SMIP004 showed significant inhibitory effects on breast cancer cells in vitro and in vivo. Conclusions We identify PDCD4 as an important ubiquitination substrate of SKP2. SKP2 promotes breast cancer tumorigenesis and radiation tolerance via PDCD4 degradation. Radiotherapy combine with SKP2-targeted adjuvant therapy may improve breast cancer patient survival in clinical medicine. Electronic supplementary material The online version of this article (10.1186/s13046-019-1069-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Ce Li
- School of Pharmaceutical Sciences, Shandong University, 44 Wenhua Xi Road, Jinan, 250012, Shandong, China
| | - Lutao Du
- Department of Clinical Laboratory, The Second Hospital of Shandong University, 247 Beiyuan Street, Tianqiao District, Jinan, 250033, Shandong, China
| | - Yidan Ren
- International Biotechnology R&D Center, Shandong University School of Ocean, 180 Wenhua Xi Road, Weihai, 264209, Shandong, China
| | - Xiaoyan Liu
- Department of Human Anatomy and Key Laboratory of Experimental Teratology, Ministry of Education, Shandong University School of Medicine, 44 Wenhua Xi Road, Jinan, 250012, Shandong, China
| | - Qinlian Jiao
- International Biotechnology R&D Center, Shandong University School of Ocean, 180 Wenhua Xi Road, Weihai, 264209, Shandong, China
| | - Donghai Cui
- Department of Human Anatomy and Key Laboratory of Experimental Teratology, Ministry of Education, Shandong University School of Medicine, 44 Wenhua Xi Road, Jinan, 250012, Shandong, China
| | - Mingxin Wen
- Department of Human Anatomy and Key Laboratory of Experimental Teratology, Ministry of Education, Shandong University School of Medicine, 44 Wenhua Xi Road, Jinan, 250012, Shandong, China
| | - Chuanxin Wang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, 247 Beiyuan Street, Tianqiao District, Jinan, 250033, Shandong, China
| | - Guangwei Wei
- Department of Human Anatomy and Key Laboratory of Experimental Teratology, Ministry of Education, Shandong University School of Medicine, 44 Wenhua Xi Road, Jinan, 250012, Shandong, China
| | - Yunshan Wang
- Department of Clinical Laboratory, The Second Hospital of Shandong University, 247 Beiyuan Street, Tianqiao District, Jinan, 250033, Shandong, China
| | - Aiguo Ji
- School of Pharmaceutical Sciences, Shandong University, 44 Wenhua Xi Road, Jinan, 250012, Shandong, China.
| | - Qin Wang
- Department of Anesthesiology, Qilu Hospital, Shandong University, 107 Wenhua Xi Road, Jinan, 250012, China.
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Guo J, Ozaki I, Xia J, Kuwashiro T, Kojima M, Takahashi H, Ashida K, Anzai K, Matsuhashi S. PDCD4 Knockdown Induces Senescence in Hepatoma Cells by Up-Regulating the p21 Expression. Front Oncol 2019; 8:661. [PMID: 30687637 PMCID: PMC6334536 DOI: 10.3389/fonc.2018.00661] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2018] [Accepted: 12/13/2018] [Indexed: 12/26/2022] Open
Abstract
While the over-expression of tumor suppressor programmed cell death 4 (PDCD4) induces apoptosis, it was recently shown that PDCD4 knockdown also induced apoptosis. In this study, we examined the cell cycle regulators whose activation is affected by PDCD4 knockdown to investigate the contribution of PDCD4 to cell cycle regulation in three types of hepatoma cells: HepG2, Huh7 (mutant p53 and p16-deficient), and Hep3B (p53- and Rb-deficient). PDCD4 knockdown suppressed cell growth in all three cell lines by inhibiting Rb phosphorylation via down-regulating the expression of Rb itself and CDKs, which phosphorylate Rb, and up-regulating the expression of the CDK inhibitor p21 through a p53-independent pathway. We also found that apoptosis was induced in a p53-dependent manner in PDCD4 knockdown HepG2 cells (p53+), although the mechanism of cell death in PDCD4 knockdown Hep3B cells (p53-) was different. Furthermore, PDCD4 knockdown induced cellular senescence characterized by β-galactosidase staining, and p21 knockdown rescued the senescence and cell death as well as the inhibition of Rb phosphorylation induced by PDCD4 knockdown. Thus, PDCD4 is an important cell cycle regulator of hepatoma cells and may be a promising therapeutic target for the treatment of hepatocellular carcinoma.
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Affiliation(s)
- Jing Guo
- Division of Hepatology, Diabetology and Endocrinology, Department of Internal Medicine, Saga Medical School, Saga University, Saga, Japan
| | - Iwata Ozaki
- Division of Hepatology, Diabetology and Endocrinology, Department of Internal Medicine, Saga Medical School, Saga University, Saga, Japan.,Health Administration Centre, Saga Medical School, Saga University, Saga, Japan
| | - Jinghe Xia
- Division of Hepatology, Diabetology and Endocrinology, Department of Internal Medicine, Saga Medical School, Saga University, Saga, Japan
| | - Takuya Kuwashiro
- Division of Hepatology, Diabetology and Endocrinology, Department of Internal Medicine, Saga Medical School, Saga University, Saga, Japan
| | - Motoyasu Kojima
- Division of Hepatology, Diabetology and Endocrinology, Department of Internal Medicine, Saga Medical School, Saga University, Saga, Japan
| | - Hirokazu Takahashi
- Division of Hepatology, Diabetology and Endocrinology, Department of Internal Medicine, Saga Medical School, Saga University, Saga, Japan
| | - Kenji Ashida
- Division of Hepatology, Diabetology and Endocrinology, Department of Internal Medicine, Saga Medical School, Saga University, Saga, Japan
| | - Keizo Anzai
- Division of Hepatology, Diabetology and Endocrinology, Department of Internal Medicine, Saga Medical School, Saga University, Saga, Japan
| | - Sachiko Matsuhashi
- Division of Hepatology, Diabetology and Endocrinology, Department of Internal Medicine, Saga Medical School, Saga University, Saga, Japan
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Yang Y, Jiang X, Li D, Wang F, Yang Q, Li B. The expression and clinical significance of PDCD4 and Her-2 in human gastric cancer. EUR J INFLAMM 2019. [DOI: 10.1177/2058739219828236] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
To investigate the correlation and clinical significance between programmed cell death factor 4 (PDCD4) and epidermal growth factor receptor 2 (Her-2) expressions and clinicopathological parameters in patients with gastric cancer, a total of 65 cases of gastric cancer and the corresponding normal mucosa with PDCD4 and Her-2 protein expressions were detected by SP immunohistochemical staining, and 50 cases of gastric cancer and the corresponding normal mucosa with PDCD4 and Her-2 protein expression quantities were detected by Western blot, in order to analyze the relationship between the positive expressions of PDCD4 and Her-2 protein and the clinicopathological features of patients with gastric cancer. The results showed that the positive rate of PDCD4 protein expression in gastric cancer tissues was 7.7%, which was significantly lower than that in the corresponding normal tissues, that is, 77.5% ( P < 0.05); the positive rate of Her-2 expression was 41.5%, which was significantly higher than that of the corresponding normal tissues, which is 2.5% ( P < 0.05). The Western blot test showed that the expression of PDCD4 protein in gastric cancer was 0.3105 ± 0.0073, which was significantly lower than that in the corresponding normal tissues, that is, 0.9428 ± 0.0127 ( P < 0.05); the expression level of Her-2 protein in gastric cancer tissues was 0.9428 ± 0.0127, which was significantly higher than that of the corresponding normal mucosa, which is 0.2054 ± 0.0264 ( P < 0.05). The positive expressions of PDCD4 (5/65) and Her-2 (27/65) were significantly correlated with the differentiation degrees and TNM stages of gastric cancer ( P < 0.05). However, no significant correlation can be observed from Table 2 ( P > 0.05), regarding sex, age, tumor size, and lymph node metastasis. Our research claimed that PDCD4 and Her-2 may play an important role in the invasion and metastasis of gastric cancer, which has a negative correlation with biological behaviors of gastric cancer. The low expression of PDCD4 and the high expression of Her-2 in gastric cancer may promote the occurrence and progression of cancer. The PDCD4 and Her-2 test can be used as an index to evaluate the malignant biological behaviors of gastric cancer and prognosis, and provide a theoretical basis for targeted therapy.
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Affiliation(s)
- Yuelou Yang
- Department of Gastroenterology, Qingdao University, Qingdao, China
- Department of Gastroenterology, Qingdao Huangdao District Central Hospital, Qingdao, China
| | - Xiangjun Jiang
- Department of Gastroenterology, Qingdao Municipal Hospital, Affiliated Hospital of Qingdao University, Qingdao, China
| | - Dong Li
- Department of Pathology, Qingdao Huangdao District Central Hospital, Qingdao, China
| | - Feiyan Wang
- Department of Gastroenterology, Qingdao Huangdao District Central Hospital, Qingdao, China
| | - Qun Yang
- Department of Maternity, Qingdao Huangdao District Central Hospital, Qingdao, China
| | - Bin Li
- Department of Gastroenterology, Qingdao Huangdao District Central Hospital, Qingdao, China
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Aerobic endurance training status affects lymphocyte apoptosis sensitivity by induction of molecular genetic adaptations. Brain Behav Immun 2019; 75:251-257. [PMID: 30790541 DOI: 10.1016/j.bbi.2018.10.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Revised: 09/27/2018] [Accepted: 10/23/2018] [Indexed: 12/27/2022] Open
Abstract
Apoptosis is a genetically regulated form of programmed cell death which promotes the elimination of potentially detrimental immune cells. However, exercise-associated apoptosis is thought to induce a temporarily decline of the adaptive immune competence in the early post-exercise period. The purpose of the present study was to investigate if the aerobic endurance training status affects the sensitivity of human peripheral blood lymphocytes towards different types of apoptosis inducers and secondly, if this is mediated by the modulation of apoptosis-associated proteins and microRNAs. Collected at resting conditions, isolated lymphocytes of endurance trained athletes (ET) and healthy untrained subjects were either exposed to phytohemagglutinin-L (PHA-L), hydrogen peroxide (H2O2), or dexamethasone (DEX) as apoptosis inducer. Results revealed no significant differences between ET and UT in terms of lymphocyte apoptosis immediately following isolation as determined by flow cytometry using annexin V staining. After 24 h of ex vivo cultivation, lymphocytes of ET showed a reduced sensitivity to PHA-L-induced lymphocyte apoptosis which was accompanied by a noticeably up-regulation of the prominent apoptosis inhibitor genes X-linked inhibitor of apoptosis (XIAP) and Cyclin dependent kinase inhibitor 1B (CDKN1B) as analyzed by quantitative real-time PCR. Moreover, a trend was observed for the suppression of the corresponding pro-apoptotic miR-221. Lymphocyte apoptosis in control, H2O2 and DEX treated cells was not affected by aerobic endurance training status. However, distinct molecular signatures could be identified in un-treated control samples characterized by a counterbalanced modulation of pro- and anti-apoptotic mediators in ET. The results of the current study suggest that lymphocytes adapt to repetitive endurance exercise training by promoting lymphocyte homeostasis and increasing their resistance to apoptosis. This could be based on an up-regulation of anti-apoptotic proteins and a reduction in pro-apoptotic microRNAs which together tightly regulate the genetically defined apoptotic pathways governed by the type of apoptosis stimuli. Thus, the lymphocytes of endurance-trained athletes may be primed to counteract the transient immune suppression post-exercise.
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A natural antisense lncRNA controls breast cancer progression by promoting tumor suppressor gene mRNA stability. PLoS Genet 2018; 14:e1007802. [PMID: 30496290 PMCID: PMC6289468 DOI: 10.1371/journal.pgen.1007802] [Citation(s) in RCA: 104] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2018] [Revised: 12/11/2018] [Accepted: 11/01/2018] [Indexed: 02/06/2023] Open
Abstract
The human genome encodes thousands of long noncoding RNA (lncRNA) genes; the function of majority of them is poorly understood. Aberrant expression of a significant number of lncRNAs is observed in various diseases, including cancer. To gain insights into the role of lncRNAs in breast cancer progression, we performed genome-wide transcriptome analyses in an isogenic, triple negative breast cancer (TNBC/basal-like) progression cell lines using a 3D cell culture model. We identified significantly altered expression of 1853 lncRNAs, including ~500 natural antisense transcript (NATs) lncRNAs. A significant number of breast cancer-deregulated NATs displayed co-regulated expression with oncogenic and tumor suppressor protein-coding genes in cis. Further studies on one such NAT, PDCD4-AS1 lncRNA reveal that it positively regulates the expression and activity of the tumor suppressor PDCD4 in mammary epithelial cells. Both PDCD4-AS1 and PDCD4 show reduced expression in TNBC cell lines and in patients, and depletion of PDCD4-AS1 compromised the cellular levels and activity of PDCD4. Further, tumorigenic properties of PDCD4-AS1-depleted TNBC cells were rescued by exogenous expression of PDCD4, implying that PDCD4-AS1 acts upstream of PDCD4. Mechanistically, PDCD4-AS1 stabilizes PDCD4 RNA by forming RNA duplex and controls the interaction between PDCD4 RNA and RNA decay promoting factors such as HuR. Our studies demonstrate crucial roles played by NAT lncRNAs in regulating post-transcriptional gene expression of key oncogenic or tumor suppressor genes, thereby contributing to TNBC progression. Breast cancer is the most common cancer in women worldwide. The molecular mechanisms underlying the disease have been extensively studied, leading to dramatic improvements in diagnostic and prognostic approaches. Despite the overall improvements in survival rate, numerous cases of death by breast cancer are still reported per year, alerting us about the potential gap of knowledge in cancer molecular biology era. The emerging advances in new generation sequencing techniques have revealed that the majority of genome is transcribed into non-protein coding RNAs or ncRNAs, including thousands of long ncRNAs (lncRNAs) of unknown function. Natural antisense RNAs (NATs) constitute a group of lncRNAs that are transcribed in the opposite direction to a sense protein-coding or non-coding gene with partial or complete complementarity. In this manuscript, we investigate the role of NATs in breast cancer progression, focusing on the role of PDCD4-AS1, a NAT expressed from the established tumor suppressor PDCD4 gene locus. We observe that both PDCD4-AS1 and PDCD4 display concordant expression in breast cancer cell lines and patients. In mammary epithelial cells, PDCD4-AS1 promotes the stability of PDCD4 mRNA. PDCD4-AS1 by forming RNA duplex with PDCD4 RNA prevents the interaction between PDCD4 RNA and RNA decay factors in the nucleus.
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Kashyap D, Tuli HS, Garg VK, Goel N, Bishayee A. Oncogenic and Tumor-Suppressive Roles of MicroRNAs with Special Reference to Apoptosis: Molecular Mechanisms and Therapeutic Potential. Mol Diagn Ther 2018; 22:179-201. [PMID: 29388067 DOI: 10.1007/s40291-018-0316-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
MicroRNAs (miRNAs) are the non-coding class of minute RNA molecules that negatively control post-transcriptional regulation of various functional genes. These miRNAs are transcribed from the loci present in the introns of functional or protein-coding genes, exons of non-coding genes, or even in the 3'-untranslated region (3'-UTR). They have potential to modulate the stability or translational efficiency of a variety of target RNA [messenger RNA (mRNA)]. The regulatory function of miRNAs has been elucidated in several pathological conditions, including neurological (Alzheimer's disease and Parkinson's disease) and cardiovascular conditions, along with cancer. Importantly, miRNA identification in cancer progression and invasion has evolved as an incipient era in cancer treatment. Several studies have shown the influence of miRNAs on various cancer processes, including apoptosis, invasion, metastasis and angiogenesis. In particular, apoptosis induction in tumor cells through miRNA has been extensively studied. The biphasic mode (up- and down-regulation) of miRNA expression in apoptosis and other cancer processes has already been determined. The findings of these studies could be utilized to develop potential therapeutic strategies for the management of various cancers. The present review critically describes the oncogenic and tumor suppressor role of miRNAs in apoptosis and other cancer processes, therapy resistance, and use of their presence in the body fluids as biomarkers.
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Affiliation(s)
- Dharambir Kashyap
- Department of Histopathology, Postgraduate Institute of Medical Education and Research, Chandigarh, 160012, Punjab, India
| | - Hardeep Singh Tuli
- Department of Biotechnology, Maharishi Markandeshwar University, Mullana-Ambala, 133207, Haryana, India.
| | - Vivek Kumar Garg
- Department of Biochemistry, Government Medical College and Hospital, Chandigarh, 160030, Punjab, India
| | - Neelam Goel
- Department of Information Technology, University Institute of Engineering and Technology, Panjab University, Chandigarh, 160014, Punjab, India
| | - Anupam Bishayee
- Department of Pharmaceutical Sciences, College of Pharmacy, Larkin University, Miami, FL, 33169, USA.
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Ramezani A, Nikravesh H, Faghihloo E. The roles of FOX proteins in virus-associated cancers. J Cell Physiol 2018; 234:3347-3361. [PMID: 30362516 DOI: 10.1002/jcp.27295] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Accepted: 07/31/2018] [Indexed: 12/22/2022]
Abstract
Forkhead box (FOX) proteins play a crucial role in regulating the expression of genes involved in multiple biological processes, such as metabolism, development, differentiation, proliferation, apoptosis, migration, invasion, and longevity. Deregulation of FOX proteins is commonly associated with cancer initiation, progression, and chemotherapeutic drug resistance in many human tumors. FOX proteins deregulate through genetic events and the perturbation of posttranslational modification. The purpose of the present review is to describe the deregulation of FOX proteins by oncoviruses. Oncoviruses utilize various mechanisms to deregulate FOX proteins, including alterations in posttranslational modifications, cellular localization independently of posttranslational modifications, virus-encoded miRNAs, activation or suppression of a series of cell signaling pathways. This deregulation can affect proliferation, metastasis, chemotherapy resistance, and immunosuppression in virus-induced cancers and help to chronic viral infection, development of gluconeogenic responses, and inflammation. Since the PI3K/Akt/mTOR signaling pathway is the upstream FOXO, suppressing it can cause FOXO function to return, and this can be one of the reasons for patients to recover from the infection of the viruses used to treat these inhibitors. Hence, FOX proteins could serve as prognosis markers and target therapy specifically in cancers caused by oncoviruses.
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Affiliation(s)
- Ali Ramezani
- Department of Virology, School of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Hojatolla Nikravesh
- Student Research Committee, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.,Department of Toxicology, School of Pharmacy, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
| | - Ebrahim Faghihloo
- Department of Microbiology, School of Medicine, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Yu J, Xu QG, Wang ZG, Yang Y, Zhang L, Ma JZ, Sun SH, Yang F, Zhou WP. Circular RNA cSMARCA5 inhibits growth and metastasis in hepatocellular carcinoma. J Hepatol 2018; 68:1214-1227. [PMID: 29378234 DOI: 10.1016/j.jhep.2018.01.012] [Citation(s) in RCA: 511] [Impact Index Per Article: 85.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/22/2017] [Revised: 12/27/2017] [Accepted: 01/06/2018] [Indexed: 12/12/2022]
Abstract
BACKGROUND & AIMS In recent years, circular RNAs (circRNAs) have been shown to have critical regulatory roles in cancer biology. However, the contributions of circRNAs to hepatocellular carcinoma (HCC) remain largely unknown. METHODS cSMARCA5 (a circRNA derived from exons 15 and 16 of the SMARCA5 gene, hsa_circ_0001445) was identified by RNA-sequencing and validated by quantitative reverse transcription PCR. The role of cSMARCA5 in HCC progression was assessed both in vitro and in vivo. circRNAs in vivo precipitation, luciferase reporter assay, biotin-coupled microRNA capture and fluorescence in situ hybridization were conducted to evaluate the interaction between cSMARCA5 and miR-17-3p/miR-181b-5p. RESULTS The expression of cSMARCA5 was lower in HCC tissues, because of the regulation of DExH-Box Helicase 9, an abundant nuclear RNA helicase. The downregulation of cSMARCA5 in HCC was significantly correlated with aggressive characteristics and served as an independent risk factor for overall survival and recurrence-free survival in patients with HCC after hepatectomy. Our in vivo and in vitro data indicated that cSMARCA5 inhibits the proliferation and migration of HCC cells. Mechanistically, we found that cSMARCA5 could promote the expression of TIMP3, a well-known tumor suppressor, by sponging miR-17-3p and miR-181b-5p. CONCLUSION These results reveal an important role of cSMARCA5 in the growth and metastasis of HCC and provide a fresh perspective on circRNAs in HCC progression. LAY SUMMARY Herein, we studied the role of cSMARCA5, a circular RNA, in hepatocellular carcinoma. Our in vitro and in vivo data showed that cSMARCA5 inhibits the growth and migration of hepatocellular carcinoma cells, making it a potential therapeutic target.
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Affiliation(s)
- Jian Yu
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Qing-Guo Xu
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Zhen-Guang Wang
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Yuan Yang
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China
| | - Ling Zhang
- The Department of Medical Genetics, Second Military Medical University, Shanghai, China
| | - Jin-Zhao Ma
- The Department of Medical Genetics, Second Military Medical University, Shanghai, China
| | - Shu-Han Sun
- The Department of Medical Genetics, Second Military Medical University, Shanghai, China
| | - Fu Yang
- The Department of Medical Genetics, Second Military Medical University, Shanghai, China.
| | - Wei-Ping Zhou
- The Third Department of Hepatic Surgery, Eastern Hepatobiliary Surgery Hospital, Second Military Medical University, Shanghai, China.
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Liu Y, Sun H, Mao H, Gao M, Tan X, Li Y, Li Y, Muloye GM, Zhang L, Wang X, Wei Z. Expression of tumor suppressor programmed cell death 4 in endometrioid endometrial carcinomas and clinicopathological significance. Oncol Lett 2018; 15:9369-9376. [PMID: 29805661 DOI: 10.3892/ol.2018.8517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Accepted: 03/30/2017] [Indexed: 02/06/2023] Open
Abstract
Programmed cell death 4 (PDCD4), as a novel tumor suppressor, serves important roles in the pathogenesis of tumors. The expression of PDCD4 is downregulated or lost in various human tumors. However, the expression of PDCD4 in endometrial cancer and the clinicopathological significance remain unclear. The aim of the present study was to investigate the expression of PDCD4 in endometrioid endometrial carcinoma (EEC) and the association with clinicopathological parameters. The expression of PDCD4 in EEC tissues and control endometrium was detected by reverse transcription-quantitative polymerase chain reaction, western blotting and immunohistochemistry. PDCD4 expression was also investigated in control endometrial glandular epithelial cells and the endometrial cancer KLE cell line by immunocytochemistry, and the association between PDCD4 expression and clinicopathological parameters of patients with EEC was analyzed. The results demonstrated that PDCD4-positive staining was mainly located in the cytoplasm of endometrial glandular epithelial cells and EEC cells. The staining index of PDCD4 in the proliferative phase was significantly increased compared with that in the secretory phase of control endometrium (P<0.001). There was significantly decreased PDCD4 expression in grade (G) 2/3 EEC tissues compared with the proliferative phase of control endometrium (P<0.001). PDCD4 expression was significantly associated with tumor grade. The PDCD4 levels in G1 EEC tissues were higher compared with the G2/3 EEC group (P<0.01). The results indicated that PDCD4 is associated with the histological grade of EEC, and that PDCD4 may be a valuable indicator of the degree of tumor malignancy in patients with EEC.
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Affiliation(s)
- Yanping Liu
- Department of Gynecology and Obstetrics, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Han Sun
- Department of Immunology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China.,Department of Clinical Laboratory Services, Linyi People's Hospital, Linyi, Shandong 276000, P.R. China
| | - Hongju Mao
- Department of Infection, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
| | - Meng Gao
- Department of Immunology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Xiao Tan
- Department of Pathology, The People's Hospital of Linyi City, Linyi, Shandong 276000, P.R. China
| | - Yue Li
- Department of Immunology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Yan Li
- Department of Immunology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Guy Mutangala Muloye
- Department of Gynecology and Obstetrics, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Lining Zhang
- Department of Immunology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Xiaoyan Wang
- Department of Immunology, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China
| | - Zengtao Wei
- Department of Gynecology and Obstetrics, Shandong University School of Medicine, Jinan, Shandong 250012, P.R. China.,Department of Gynecology and Obstetrics, Jinan Central Hospital Affiliated to Shandong University, Jinan, Shandong 250013, P.R. China
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Maeda N, Abdullahi A, Beatty B, Dhanani Z, Adegoke OAJ. Depletion of the mRNA translation initiation inhibitor, programmed cell death protein 4 (PDCD4), impairs L6 myotube formation. Physiol Rep 2018; 5:5/17/e13395. [PMID: 28899909 PMCID: PMC5599859 DOI: 10.14814/phy2.13395] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2017] [Revised: 07/28/2017] [Accepted: 07/31/2017] [Indexed: 01/05/2023] Open
Abstract
The mechanistic (mammalian) target of rapamycin complex 1 (mTORC1) signaling is vital for optimal muscle mass and function. Although the significance of mTORC1 in stimulating muscle growth is unequivocal, evidence in support of its role during muscle regeneration is less clear. Here, we showed that the abundance (protein and mRNA) of the mTORC1/S6K1 substrate, programmed cell death protein 4 (PDCD4), is upregulated at the onset of differentiation of L6 and C2C12 cells. The increase in PDCD4 was not associated with any changes in S6K1 activation, but the abundance of beta transducing repeat‐containing protein (β‐TrCP), the ubiquitin ligase that targets PDCD4 for degradation, increased. Myoblasts lacking PDCD4 showed impaired myotube formation and had markedly low levels of MHC‐1. Analysis of poly (ADP‐ribose) Polymerase (PARP), caspase 7 and caspase 3 indicated reduced apoptosis in PDCD4‐deficient cells. Our data demonstrate a role for PDCD4 in muscle cell formation and suggest that interventions that target this protein may hold promise for managing conditions associated with impaired myotube formation.
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Affiliation(s)
- Naomi Maeda
- School of Kinesiology and Health Science and Muscle Health Research Centre, York University, Toronto, Ontario, Canada
| | - Abdikarim Abdullahi
- School of Kinesiology and Health Science and Muscle Health Research Centre, York University, Toronto, Ontario, Canada
| | - Brendan Beatty
- School of Kinesiology and Health Science and Muscle Health Research Centre, York University, Toronto, Ontario, Canada
| | - Zameer Dhanani
- School of Kinesiology and Health Science and Muscle Health Research Centre, York University, Toronto, Ontario, Canada
| | - Olasunkanmi A J Adegoke
- School of Kinesiology and Health Science and Muscle Health Research Centre, York University, Toronto, Ontario, Canada
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Cytoplasmic localization of programmed cell death 4 contributes to its anti-apoptotic function. Mol Cell Biochem 2018; 448:155-164. [DOI: 10.1007/s11010-018-3322-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2017] [Accepted: 02/07/2018] [Indexed: 12/20/2022]
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Maachani UB, Tandle A, Shankavaram U, Kramp T, Camphausen K. Modulation of miR-21 signaling by MPS1 in human glioblastoma. Oncotarget 2018; 7:52912-52927. [PMID: 25991676 PMCID: PMC5288158 DOI: 10.18632/oncotarget.4143] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2015] [Accepted: 04/11/2015] [Indexed: 12/14/2022] Open
Abstract
Monopolar spindle 1 (MPS1) is an essential spindle assembly checkpoint (SAC) kinase involved in determining spindle integrity. Beyond its mitotic functions, it has been implicated in several other signaling pathways. Our earlier studies have elaborated on role of MPS1 in glioblastoma (GBM) radiosensitization. In this study using reverse phase protein arrays (RPPAs), we assessed MPS1 mediated cell signaling pathways and demonstrated that inhibiting MPS1 could upregulate the expression of the tumor suppressor PDCD4 and MSH2 genes, by down regulating micro RNA-21 (miR-21). In GBMs miR-21 expression is significantly elevated and is associated with chemo and radioresistance. Both MPS1 and miR-21 depletion suppressed GBM cell proliferation, whereas, ectopic expression of miR-21 rescued GBM cell growth from MPS1 inhibition. Further, we demonstrate that MPS1 mediates phosphorylation of SMAD3 but not SMAD2 in GBM cells; A possible mechanism behind miR-21 modulation by MPS1. Collectively, our results shed light onto an important role of MPS1 in TGF-β/SMAD signaling via miR-21 regulation. We also, show the prognostic effect of miR-21, PDCD4 and MSH2 levels to patient survival across different GBM molecular subtypes. This scenario in which miR-21 is modulated by MPS1 inhibition may be exploited as a potential target for effective GBM therapy.
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Affiliation(s)
- Uday B Maachani
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Anita Tandle
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Uma Shankavaram
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Tamalee Kramp
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
| | - Kevin Camphausen
- Radiation Oncology Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland, USA
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