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Philippe C, Jaud M, Féral K, Gay A, Van Den Berghe L, Farce M, Bousquet M, Pyronnet S, Mazzolini L, Rouault-Pierre K, Touriol C. Pivotal role of the endoplasmic reticulum stress-related XBP1s/miR-22/SIRT1 axis in acute myeloid leukemia apoptosis and response to chemotherapy. Leukemia 2024; 38:1764-1776. [PMID: 38909090 PMCID: PMC11286524 DOI: 10.1038/s41375-024-02321-8] [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: 01/19/2024] [Revised: 06/13/2024] [Accepted: 06/17/2024] [Indexed: 06/24/2024]
Abstract
Malignant growth relies on rapid protein synthesis frequently leading to endoplasmic reticulum (ER) overload and accumulation of unfolded or misfolded protein in this cellular compartment. In the ER, protein homeostasis is finely regulated by a mechanism called the unfolded protein response (UPR), involving the activation of signalization pathways mediated by three transmembrane proteins, namely PERK, IRE1 and ATF6. IRE1 endoribonuclease activation leads in particular to the splicing of the cytosolic mRNA encoding the key UPR-specific transcription factor XBP1s. Our study shows that sustained activation of XBP1s expression in acute myeloid leukemia (AML) cells induces apoptosis in vitro and in vivo, whereas a moderate XBP1s expression sensitizes cells to chemotherapeutic treatments. ChIP-seq experiments identified specific XBP1s target genes including the MIR22HG lncRNA, the precursor transcript of microRNA-22-3p. miR-22-3p upregulation by XBP1s or forced expression of miR-22 significantly decreases cell's viability and sensitizes leukemic cells to chemotherapy. We found that miR-22-3p intracellular effects result at least partially from the targeting of the mRNA encoding the deacetylase sirtuin-1 (SIRT1), a well-established pro-survival factor. Therefore, this novel XBP1s/miR-22/SIRT1 axis identified could play a pivotal role in the proliferation and chemotherapeutic response of leukemic cells.
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Affiliation(s)
- Céline Philippe
- Barts Cancer Institute, Queen Mary University of London, London, UK.
| | - Manon Jaud
- Department of Leukemia, Division of Cancer Medicine, The University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Kelly Féral
- Centre de Recherches en Cancérologie de Toulouse (CRCT), INSERM UMR-1037, CNRS UMR-5071, Université de Toulouse, Toulouse, France
| | - Alexandre Gay
- Centre de Recherches en Cancérologie de Toulouse (CRCT), INSERM UMR-1037, CNRS UMR-5071, Université de Toulouse, Toulouse, France
| | - Loïc Van Den Berghe
- Vectorology Platform, CRCT INSERM UMR-1037 Technological Pole, F-31037, Toulouse, France
| | - Manon Farce
- Flow Cytometry and Cell Sorting Platform, CRCT INSERM UMR-1037 Technological Pole, F-31037, Toulouse, France
| | - Marina Bousquet
- Centre de Recherches en Cancérologie de Toulouse (CRCT), INSERM UMR-1037, CNRS UMR-5071, Université de Toulouse, Toulouse, France
| | - Stéphane Pyronnet
- Centre de Recherches en Cancérologie de Toulouse (CRCT), INSERM UMR-1037, CNRS UMR-5071, Université de Toulouse, Toulouse, France
| | - Laurent Mazzolini
- Centre de Recherches en Cancérologie de Toulouse (CRCT), INSERM UMR-1037, CNRS UMR-5071, Université de Toulouse, Toulouse, France
| | | | - Christian Touriol
- Centre de Recherches en Cancérologie de Toulouse (CRCT), INSERM UMR-1037, CNRS UMR-5071, Université de Toulouse, Toulouse, France.
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2
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Letelier P, Saldías R, Loren P, Riquelme I, Guzmán N. MicroRNAs as Potential Biomarkers of Environmental Exposure to Polycyclic Aromatic Hydrocarbons and Their Link with Inflammation and Lung Cancer. Int J Mol Sci 2023; 24:16984. [PMID: 38069307 PMCID: PMC10707120 DOI: 10.3390/ijms242316984] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Revised: 10/26/2023] [Accepted: 10/28/2023] [Indexed: 12/18/2023] Open
Abstract
Exposure to atmospheric air pollution containing volatile organic compounds such as polycyclic aromatic hydrocarbons (PAHs) has been shown to be a risk factor in the induction of lung inflammation and the initiation and progression of lung cancer. MicroRNAs (miRNAs) are small single-stranded non-coding RNA molecules of ~20-22 nucleotides that regulate different physiological processes, and their altered expression is implicated in various pathophysiological conditions. Recent studies have shown that the regulation of gene expression of miRNAs can be affected in diseases associated with outdoor air pollution, meaning they could also be useful as biomarkers of exposure to environmental pollution. In this article, we review the published evidence on miRNAs in relation to exposure to PAH pollution and discuss the possible mechanisms that may link these compounds with the expression of miRNAs.
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Affiliation(s)
- Pablo Letelier
- Laboratorio de Investigación en Salud de Precisión, Departamento de Procesos Diagnósticos y Evaluación, Facultad de Ciencias de la Salud, Universidad Católica de Temuco, Temuco 4813302, Chile; (R.S.); (N.G.)
| | - Rolando Saldías
- Laboratorio de Investigación en Salud de Precisión, Departamento de Procesos Diagnósticos y Evaluación, Facultad de Ciencias de la Salud, Universidad Católica de Temuco, Temuco 4813302, Chile; (R.S.); (N.G.)
| | - Pía Loren
- Center of Molecular Biology and Pharmacogenetics, Scientific and Technological Bioresource Nucleus, Universidad de La Frontera, Temuco 4811230, Chile;
| | - Ismael Riquelme
- Institute of Biomedical Sciences, Faculty of Health Sciences, Universidad Autónoma de Chile, Temuco 4810101, Chile;
| | - Neftalí Guzmán
- Laboratorio de Investigación en Salud de Precisión, Departamento de Procesos Diagnósticos y Evaluación, Facultad de Ciencias de la Salud, Universidad Católica de Temuco, Temuco 4813302, Chile; (R.S.); (N.G.)
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3
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Panella R, Cotton CA, Maymi VA, Best S, Berry KE, Lee S, Batalini F, Vlachos IS, Clohessy JG, Kauppinen S, Paolo Pandolfi P. Targeting of microRNA-22 Suppresses Tumor Spread in a Mouse Model of Triple-Negative Breast Cancer. Biomedicines 2023; 11:biomedicines11051470. [PMID: 37239141 DOI: 10.3390/biomedicines11051470] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Revised: 01/21/2023] [Accepted: 05/09/2023] [Indexed: 05/28/2023] Open
Abstract
microRNA-22 (miR-22) is an oncogenic miRNA whose up-regulation promotes epithelial-mesenchymal transition (EMT), tumor invasion, and metastasis in hormone-responsive breast cancer. Here we show that miR-22 plays a key role in triple negative breast cancer (TNBC) by promoting EMT and aggressiveness in 2D and 3D cell models and a mouse xenograft model of human TNBC, respectively. Furthermore, we report that miR-22 inhibition using an LNA-modified antimiR-22 compound is effective in reducing EMT both in vitro and in vivo. Importantly, pharmacologic inhibition of miR-22 suppressed metastatic spread and markedly prolonged survival in mouse xenograft models of metastatic TNBC highlighting the potential of miR-22 silencing as a new therapeutic strategy for the treatment of TNBC.
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Affiliation(s)
- Riccardo Panella
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Departments of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
- Center for Genomic Medicine, Desert Research Institute, Reno, NV 89512, USA
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, 2450 Copenhagen, Denmark
| | - Cody A Cotton
- Center for Genomic Medicine, Desert Research Institute, Reno, NV 89512, USA
| | - Valerie A Maymi
- Preclinical Murine Pharmacogenetics Facility and Mouse Hospital, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Sachem Best
- Preclinical Murine Pharmacogenetics Facility and Mouse Hospital, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Kelsey E Berry
- Center for Genomic Medicine, Desert Research Institute, Reno, NV 89512, USA
| | - Samuel Lee
- Preclinical Murine Pharmacogenetics Facility and Mouse Hospital, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Felipe Batalini
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Departments of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Ioannis S Vlachos
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Departments of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - John G Clohessy
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Departments of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
- Preclinical Murine Pharmacogenetics Facility and Mouse Hospital, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
| | - Sakari Kauppinen
- Center for RNA Medicine, Department of Clinical Medicine, Aalborg University, 2450 Copenhagen, Denmark
| | - Pier Paolo Pandolfi
- Cancer Research Institute, Beth Israel Deaconess Cancer Center, Departments of Medicine and Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA 02215, USA
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center, University of Turin, 10154 Turin, Italy
- Renown Institute for Cancer, Nevada System of Higher Education, Reno, NV 89502, USA
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4
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Expression analysis of circulating miR-22, miR-122, miR-217 and miR-367 as promising biomarkers of acute lymphoblastic leukemia. Mol Biol Rep 2023; 50:255-265. [PMID: 36327023 DOI: 10.1007/s11033-022-08016-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 10/07/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND The role of serum-based biomarkers such as microRNAs in cancer diagnosis has been extensively established. This study aimed to determine the expression levels of bioinformatically selected miRNAs and whether they can be used as biomarkers or a new therapeutic target in patients with acute lymphoblastic leukemia (ALL). MATERIALS AND METHODS The expression levels of serum miR-22, miR-122, miR-217, and miR-367 in 21 ALL patients and 21 healthy controls were measured using quantitative real-time PCR. The receiver operating characteristic (ROC) curve and the associated area under the curve (AUC) was used to assess candidate miRNAs' diagnostic value as a biomarker. RESULTS The results showed that miR-217 was markedly decreased in patients with ALL compared to controls. Moreover, miR-22, miR-122, and miR-367 were found to be upregulated. Furthermore, ROC analysis showed that serum miR-217 and miR-367 could differentiate ALL patients from healthy individuals, while miR-22 has approximate discriminatory power that requires further investigation. CONCLUSION These results provide promising preliminary evidence that circulating miR-217 and miR-367 could be considered potent diagnostic biomarkers and therapeutic goals in this disease.
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5
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Centomo ML, Vitiello M, Poliseno L, Pandolfi PP. An Immunocompetent Environment Unravels the Proto-Oncogenic Role of miR-22. Cancers (Basel) 2022; 14:cancers14246255. [PMID: 36551740 PMCID: PMC9776418 DOI: 10.3390/cancers14246255] [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: 11/09/2022] [Revised: 12/09/2022] [Accepted: 12/14/2022] [Indexed: 12/23/2022] Open
Abstract
MiR-22 was first identified as a proto-oncogenic microRNA (miRNA) due to its ability to post-transcriptionally suppress the expression of the potent PTEN (Phosphatase And Tensin Homolog) tumor suppressor gene. miR-22 tumorigenic role in cancer was subsequently supported by its ability to positively trigger lipogenesis, anabolic metabolism, and epithelial-mesenchymal transition (EMT) towards the metastatic spread. However, during the following years, the picture was complicated by the identification of targets that support a tumor-suppressive role in certain tissues or cell types. Indeed, many papers have been published where in vitro cellular assays and in vivo immunodeficient or immunosuppressed xenograft models are used. However, here we show that all the studies performed in vivo, in immunocompetent transgenic and knock-out animal models, unanimously support a proto-oncogenic role for miR-22. Since miR-22 is actively secreted from and readily exchanged between normal and tumoral cells, a functional immune dimension at play could well represent the divider that allows reconciling these contradictory findings. In addition to a critical review of this vast literature, here we provide further proof of the oncogenic role of miR-22 through the analysis of its genomic locus vis a vis the genetic landscape of human cancer.
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Affiliation(s)
- Maria Laura Centomo
- Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy
- William N. Pennington Cancer Institute, Renown Health, Nevada System of Higher Education, Reno, NV 89502, USA
- Center for Genomic Medicine, Desert Research Institute, Reno, NV 89512, USA
| | - Marianna Vitiello
- Institute of Clinical Physiology, National Research Council, Via Moruzzi 1, 56124 Pisa, Italy
- Oncogenomics Unit, Core Research Laboratory, ISPRO, Via Moruzzi 1, 56124 Pisa, Italy
| | - Laura Poliseno
- Institute of Clinical Physiology, National Research Council, Via Moruzzi 1, 56124 Pisa, Italy
- Oncogenomics Unit, Core Research Laboratory, ISPRO, Via Moruzzi 1, 56124 Pisa, Italy
- Correspondence: (L.P.); (P.P.P.); Tel.: +39-050-315-2780 (L.P.); +1-775-982-6210 (P.P.P.); Fax: +39-050-315-3327 (L.P.); +1-775-982-4288 (P.P.P.)
| | - Pier Paolo Pandolfi
- Department of Molecular Biotechnology and Health Sciences, University of Turin, 10126 Turin, Italy
- William N. Pennington Cancer Institute, Renown Health, Nevada System of Higher Education, Reno, NV 89502, USA
- Center for Genomic Medicine, Desert Research Institute, Reno, NV 89512, USA
- Correspondence: (L.P.); (P.P.P.); Tel.: +39-050-315-2780 (L.P.); +1-775-982-6210 (P.P.P.); Fax: +39-050-315-3327 (L.P.); +1-775-982-4288 (P.P.P.)
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6
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Naakka E, Barros-Filho MC, Adnan-Awad S, Al-Samadi A, Marchi FA, Kuasne H, Korelin K, Suleymanova I, Brown AL, Scapulatempo-Neto C, Lourenço SV, Castilho RM, Kowalski LP, Mäkitie A, Araújo VC, Leivo I, Rogatto SR, Salo T, Passador-Santos F. miR-22 and miR-205 Drive Tumor Aggressiveness of Mucoepidermoid Carcinomas of Salivary Glands. Front Oncol 2022; 11:786150. [PMID: 35223452 PMCID: PMC8864291 DOI: 10.3389/fonc.2021.786150] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Accepted: 12/31/2021] [Indexed: 11/26/2022] Open
Abstract
Objectives To integrate mRNA and miRNA expression profiles of mucoepidermoid carcinomas (MECs) and normal salivary gland (NSGs) tissue samples and identify potential drivers. Material and Methods Gene and miRNA expression arrays were performed in 35 MECs and six NSGs. Results We found 46 differentially expressed (DE) miRNAs and 3,162 DE mRNAs. Supervised hierarchical clustering analysis of the DE transcripts revealed two clusters in both miRNA and mRNA profiles, which distinguished MEC from NSG samples. The integrative miRNA-mRNA analysis revealed a network comprising 696 negatively correlated interactions (44 miRNAs and 444 mRNAs) involving cell signaling, cell cycle, and cancer-related pathways. Increased expression levels of miR-205-5p and miR-224-5p and decreased expression levels of miR-139-3p, miR-145-3p, miR-148a-3p, miR-186-5p, miR-338-3p, miR-363-3p, and miR-4324 were significantly related to worse overall survival in MEC patients. Two overexpressed miRNAs in MEC (miR-22 and miR-205) were selected for inhibition by the CRISPR-Cas9 method. Cell viability, migration, and invasion assays were performed using an intermediate grade MEC cell line. Knockout of miR-205 reduced cell viability and enhanced ZEB2 expression, while miR-22 knockout reduced cell migration and invasion and enhanced ESR1 expression. Our results indicate a distinct transcriptomic profile of MEC compared to NSG, and the integrative analysis highlighted miRNA-mRNA interactions involving cancer-related pathways, including PTEN and PI3K/AKT. Conclusion The in vitro functional studies revealed that miR-22 and miR-205 deficiencies reduced the viability, migration, and invasion of the MEC cells suggesting they are potential oncogenic drivers in MEC.
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Affiliation(s)
- Erika Naakka
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland.,Translational Immunology Research Program (TRIMM), University of Helsinki, Helsinki, Finland
| | | | - Shady Adnan-Awad
- Translational Immunology Research Program (TRIMM), University of Helsinki, Helsinki, Finland.,Hematology Research Unit, Department of Clinical Chemistry and Hematology, University of Helsinki, Helsinki University Hospital Comprehensive Cancer Center, Helsinki, Finland
| | - Ahmed Al-Samadi
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland.,Translational Immunology Research Program (TRIMM), University of Helsinki, Helsinki, Finland
| | | | - Hellen Kuasne
- Centro Internacional de Pesquisa (CIPE) - A.C.Camargo Cancer Center, São Paulo, Brazil
| | - Katja Korelin
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland.,Translational Immunology Research Program (TRIMM), University of Helsinki, Helsinki, Finland
| | - Ilida Suleymanova
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland.,Translational Immunology Research Program (TRIMM), University of Helsinki, Helsinki, Finland
| | - Amy Louise Brown
- Department of Oral Pathology, Faculdade São Leopoldo Mandic, Campinas, Brazil
| | | | - Silvia Vanessa Lourenço
- Department of Pathology, A.C.Camargo Cancer Center, São Paulo, Brazil.,Department of General Pathology, Dental School, University of São Paulo, São Paulo, Brazil
| | - Rogério Moraes Castilho
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI, United States
| | - Luiz Paulo Kowalski
- Department of Head and Neck Surgery and Otorhinolaryngology, A.C.Camargo Cancer Center, São Paulo, Brazil.,Department of Head and Neck Surgery, University of Sao Paulo Medical School, São Paulo, Brazil
| | - Antti Mäkitie
- Department of Otorhinolaryngology - Head and Neck Surgery, University of Helsinki and Helsinki University Hospital, Helsinki, Finland.,Research Program in Systems Oncology, Faculty of Medicine, University of Helsinki, Helsinki, Finland.,Division of Ear, Nose and Throat Diseases, Department of Clinical Sciences, Intervention and Technology, Karolinska Institute and Karolinska Hospital, Stockholm, Sweden
| | | | - Ilmo Leivo
- Institute of Biomedicine, Pathology, University of Turku and Turku University Hospital, Turku, Finland
| | - Silvia Regina Rogatto
- Department of Clinical Genetics, University Hospital of Southern Denmark, Vejle, Denmark.,Institute of Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Tuula Salo
- Department of Oral and Maxillofacial Diseases, University of Helsinki, Helsinki, Finland.,Translational Immunology Research Program (TRIMM), University of Helsinki, Helsinki, Finland.,Department of Pathology, Helsinki University Hospital, Helsinki, Finland.,Cancer and Translational Medicine Research Unit, University of Oulu, Oulu, Finland.,Medical Research Center, Oulu University Hospital, Oulu, Finland
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7
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Wu Z, Geng J, Bai Y, Qi Y, Chang C, Jiao Y, Guo Z. MicroRNA-22 inhibition promotes the development of atherosclerosis via targeting interferon regulator factor 5. Exp Cell Res 2021; 409:112922. [PMID: 34780785 DOI: 10.1016/j.yexcr.2021.112922] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2021] [Revised: 10/15/2021] [Accepted: 11/11/2021] [Indexed: 12/12/2022]
Abstract
Atherosclerosis is generally accepted as a chronic inflammatory disease and is the most important pathological process underlying the cardiovascular diseases. MiR-22 exerts an important role in tumorgenesis, obesity and NAFLD development, as well as cardiovascular diseases. However, a certain role of miR-22 in the pathogenesis of atherosclerosis remains undetermined. Here, we showed that miR-22 exhibited a negative association with the deteriorated atherosclerotic plaque and showed significant downregulated expression in macrophages. Next, treatment of ApoE deficiency (ApoE-/-) mice with miR-22 inhibitors which were then subjected to high fat diet (HFD) for 12 weeks were performed to investigate the function of miR-22 on atherogenesis. The results exhibited that miR-22 inhibition dramatically promoted atherosclerotic plaques but attenuated plaque stabilization which were accompanied by decreased smooth muscle cell and collagen content, but increased macrophage infiltration and lipid accumulation. More importantly, the in vivo and in vitro experiments suggested that miR-22 inhibition accelerated inflammatory response and foam cell formation. Mechanistically, we demonstrated interferon regulator factor 5 (IRF5) was an important target of miR-22 and it was required for the regulation of inflammation mediated by miR-22 inhibition. Collectively, these evidences revealed that miR-22 inhibition promoted the atherosclerosis progression through activation of IRF5.
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Affiliation(s)
- Zhenhua Wu
- Department of Cardiac Surgery, Tianjin Chest Hospital, Tianjin, 300222, China; Academy of Medical Engineering and Translational Medicine, Tianjin University, Tianjin, 300073, China
| | - Jie Geng
- Cardiac Intensive Care Unit, Tianjin Chest Hospital, Tianjin, 300222, China
| | - Yunpeng Bai
- Department of Cardiac Surgery, Tianjin Chest Hospital, Tianjin, 300222, China
| | - Yujuan Qi
- Department of Cardiac Surgery, Tianjin Chest Hospital, Tianjin, 300222, China
| | - Chao Chang
- Department of Cardiac Surgery, Tianjin Chest Hospital, Tianjin, 300222, China
| | - Yan Jiao
- Department of Cardiac Surgery, Tianjin Chest Hospital, Tianjin, 300222, China
| | - Zhigang Guo
- Department of Cardiac Surgery, Tianjin Chest Hospital, Tianjin, 300222, China.
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8
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Zhang HS, Ouyang B, Ji XY, Liu MF. Gastrodin Alleviates Cerebral Ischaemia/Reperfusion Injury by Inhibiting Pyroptosis by Regulating the lncRNA NEAT1/miR-22-3p Axis. Neurochem Res 2021; 46:1747-1758. [PMID: 33839999 DOI: 10.1007/s11064-021-03285-2] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 02/20/2021] [Accepted: 02/23/2021] [Indexed: 01/03/2023]
Abstract
Cerebral ischaemia/reperfusion (I/R) injury-induced irreversible brain injury is a major cause of mortality and functional impairment in ageing people. Gastrodin (GAS), derived from the traditional Chinese herbal medicine Tianma, has been reported to inhibit the progression of stroke, but the mechanism whereby GAS modulates the progression of cerebral I/R remains unclear. The middle cerebral artery occlusion method was used as a model of I/R in vivo. Rats were pretreated with GAS by intraperitoneal injection 7 days before I/R surgery and were then treated with GAS for 7 days after I/R surgery. Additionally, an oxygen-glucose deprivation/reoxygenation model using neuronal cells was established in vitro to simulate I/R injury. 2,3,5-Triphenyltetrazolium chloride and Nissl staining were used to evaluate infarct size and neuronal damage, respectively. Lactate dehydrogenase release and cell counting kit-8 assays were used to assess neuronal cell viability. Enzyme-linked immunosorbent assay, qPCR, flow cytometry and western blotting were performed to analyse the expression levels of inflammatory factors (IL-1β, IL-18), lncRNA NEAT1, miR-22-3p, NLRP3 and cleaved caspase-1. Luciferase reporter experiments were performed to verify the association between lncRNA NEAT1 and miR-22-3p. The results indicated that GAS could significantly improve the neurological scores of rats and reduce the area of cerebral infarction. Meanwhile, GAS inhibited pyroptosis by downregulating NLRP3, inflammatory factors (IL-1β, IL-18) and cleaved caspase-1. In addition, GAS attenuated I/R-induced inflammation in neuronal cells through the modulation of the lncRNA NEAT1/miR-22-3p axis. GAS significantly attenuated cerebral I/R injury via modulation of the lncRNA NEAT1/miR-22-3p axis. Thus, GAS might serve as a new agent for the treatment of cerebral I/R injury.
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Affiliation(s)
- Heng-Sheng Zhang
- Department of Rehabilitation, Affiliated Nanhua Hospital, University of South China, Hengyang, 421002, Hunan, People's Republic of China
| | - Bo Ouyang
- Department of Traditional Chinese Medicine, Affiliated Nanhua Hospital, University of South China, No. 336 Dongfeng South Road, Zhuhui District, Hengyang, 421002, Hunan, People's Republic of China
| | - Xiong-Ying Ji
- Department of Gastroenterology, Affiliated Nanhua Hospital, University of South China, Hengyang, 421002, Hunan, People's Republic of China
| | - Mei-Fang Liu
- Department of Traditional Chinese Medicine, Affiliated Nanhua Hospital, University of South China, No. 336 Dongfeng South Road, Zhuhui District, Hengyang, 421002, Hunan, People's Republic of China.
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9
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Emami Nejad A, Najafgholian S, Rostami A, Sistani A, Shojaeifar S, Esparvarinha M, Nedaeinia R, Haghjooy Javanmard S, Taherian M, Ahmadlou M, Salehi R, Sadeghi B, Manian M. The role of hypoxia in the tumor microenvironment and development of cancer stem cell: a novel approach to developing treatment. Cancer Cell Int 2021; 21:62. [PMID: 33472628 PMCID: PMC7816485 DOI: 10.1186/s12935-020-01719-5] [Citation(s) in RCA: 301] [Impact Index Per Article: 100.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Revised: 12/11/2020] [Accepted: 12/16/2020] [Indexed: 12/13/2022] Open
Abstract
Hypoxia is a common feature of solid tumors, and develops because of the rapid growth of the tumor that outstrips the oxygen supply, and impaired blood flow due to the formation of abnormal blood vessels supplying the tumor. It has been reported that tumor hypoxia can: activate angiogenesis, thereby enhancing invasiveness and risk of metastasis; increase survival of tumor, as well as suppress anti-tumor immunity and hamper the therapeutic response. Hypoxia mediates these effects by several potential mechanisms: altering gene expression, the activation of oncogenes, inactivation of suppressor genes, reducing genomic stability and clonal selection. We have reviewed the effects of hypoxia on tumor biology and the possible strategiesto manage the hypoxic tumor microenvironment (TME), highlighting the potential use of cancer stem cells in tumor treatment.
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Affiliation(s)
- Asieh Emami Nejad
- Department of Biology, Payame Noor University (PNU), P.O.Box 19395-3697, Tehran, Iran
| | - Simin Najafgholian
- Department of Emergency Medicine, School of Medicine , Arak University of Medical Sciences, Arak, Iran
| | - Alireza Rostami
- Department of Surgery, School of Medicine Amiralmomenin Hospital, Arak University of Medical Sciences, Arak, Iran
| | - Alireza Sistani
- Department of Emergency Medicine, School of Medicine Valiasr Hospital, Arak University of Medical Sciences, Arak, Iran
| | - Samaneh Shojaeifar
- Department of Midwifery, Faculty of Nursing and Midwifery , Arak University of Medical Sciences , Arak, Iran
| | - Mojgan Esparvarinha
- Department of Immunology, School of Medicine , Tabriz University of Medical Sciences , Tabriz, Iran
| | - Reza Nedaeinia
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease , Isfahan University of Medical Sciences , Isfahan, Iran
| | - Shaghayegh Haghjooy Javanmard
- Applied Physiology Research Center, Cardiovascular Research Institute, Isfahan University of Medical Sciences , Isfahan, Iran
| | - Marjan Taherian
- Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran
| | - Mojtaba Ahmadlou
- Sciences Medical of University Arak, Hospital Amiralmomenin, Center Development Research Clinical, Arak, Iran
| | - Rasoul Salehi
- Pediatric Inherited Diseases Research Center, Research Institute for Primordial Prevention of Non-Communicable Disease , Isfahan University of Medical Sciences , Isfahan, Iran.,Department of Genetics and Molecular Biology, School of Medicine , Isfahan University of Medical Sciences , Isfahan, Iran
| | - Bahman Sadeghi
- Department of Health and Community Medicine, School of Medicine, Arak University of Medical Sciences, Arak, 3848176341, Iran.
| | - Mostafa Manian
- Department of Immunology, School of Medicine, Iran University of Medical Sciences, Tehran, Iran. .,Department of Medical Laboratory Science, Faculty of Medical Science Kermanshah Branch, Islamic Azad University, Imam Khomeini Campus, Farhikhtegan Bld., Shahid J'afari St., Kermanshah, 3848176341, Iran.
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10
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MicroRNAs as Guardians of the Prostate: Those Who Stand before Cancer. What Do We Really Know about the Role of microRNAs in Prostate Biology? Int J Mol Sci 2020; 21:ijms21134796. [PMID: 32645914 PMCID: PMC7370012 DOI: 10.3390/ijms21134796] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2020] [Revised: 06/29/2020] [Accepted: 07/02/2020] [Indexed: 12/17/2022] Open
Abstract
Prostate cancer is the second leading cause of cancer-related deaths of men in the Western world. Despite recent advancement in genomics, transcriptomics and proteomics to understand prostate cancer biology and disease progression, castration resistant metastatic prostate cancer remains a major clinical challenge and often becomes incurable. MicroRNAs (miRNAs), about 22-nucleotide-long non-coding RNAs, are a group of regulatory molecules that mainly work through post-transcriptional gene silencing via translational repression. Expression analysis studies have revealed that miRNAs are aberrantly expressed in cancers and have been recognized as regulators of prostate cancer progression. In this critical review, we provide an analysis of reported miRNA functions and conflicting studies as they relate to expression levels of specific miRNAs and prostate cancer progression; oncogenic and/or tumor suppressor roles; androgen receptor signaling; epithelial plasticity; and the current status of diagnostic and therapeutic applications. This review focuses on select miRNAs, highly expressed in normal and cancer tissue, to emphasize the current obstacles faced in utilizing miRNA data for significant impacts on prostate cancer therapeutics.
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11
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Xiang Q, Xiang Z, Dou R, Xiong B. Survival advantage and clinicopathological significance of microRNA-22 in cancers: a meta-analysis. Cancer Manag Res 2019; 11:8855-8868. [PMID: 31632145 PMCID: PMC6790216 DOI: 10.2147/cmar.s185124] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2018] [Accepted: 07/23/2019] [Indexed: 12/18/2022] Open
Abstract
An increasing number of studies revealed that microRNA-22 as a biomarker may play a significant role in the cancer patients' prognosis, but the accurate prognosis value of microRNA-22 remains somewhat controversial. Thus, we comprehensively searched the database and performed this study to explicate the accurate value of microRNA-22 in the cancer patients' prognosis. This meta-analysis revealed that elevated expression of microRNA-22 correlated with good overall survival (OS) and disease-free survival (DFS)/progression-free survival (PFS)/recurrence-free survival (RFS) in cancers, while no significant association was found in metastasis-free survival (MFS)/distant metastasis-free survival (DMFS). Through the subgroup analysis for OS and DFS/PFS/RFS, we found that elevated expression of miR-22 significantly correlated with good prognosis in most subgroups, while it predicted a worse prognosis in nasopharyngeal carcinoma subgroup. And besides that, elevated expression of miR-22 was negatively correlated with TNM stage, lymph node metastasis, distant metastasis and recurrence, while no significant association was found between microRNA-22 expression and T stage, tumor differentiation, and lymphatic invasion. Our meta-analysis demonstrated that elevated expression of microRNA-22 predicted a good OS and DFS/PFS/RFS in cancer patients; meanwhile, its high expression also means earlier TNM stage, and lower likelihoods of lymph node metastasis, of distant metastasis and of recurrence. If we regularly monitor miR-22 expression in cancer patients, it might be useful for us to predict cancer prognosis in future clinical applications.
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Affiliation(s)
- Qingming Xiang
- Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Wuhan430071, People’s Republic of China
| | - Zhenxian Xiang
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Wuhan430071, People’s Republic of China
| | - Rongzhang Dou
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Wuhan430071, People’s Republic of China
| | - Bin Xiong
- Department of Oncology, Zhongnan Hospital of Wuhan University, Hubei Key Laboratory of Tumor Biological Behaviors & Hubei Cancer Clinical Study Center, Wuhan430071, People’s Republic of China
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12
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Aberrant miRNAs expressed in HER-2 negative breast cancers patient. JOURNAL OF EXPERIMENTAL & CLINICAL CANCER RESEARCH : CR 2018; 37:257. [PMID: 30342533 PMCID: PMC6196003 DOI: 10.1186/s13046-018-0920-2] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 09/28/2018] [Indexed: 12/18/2022]
Abstract
Background Breast cancer is a highly heterogeneous pathology, exhibiting a number of subtypes commonly associated with a poor outcome. Due to their high stability, microRNAs are often regarded as non-invasive cancer biomarkers, having an expression pattern specific for their ‘cell of origin’. Method Triple negative breast cancer (TNBC: ER-, PR-, Her-2-) and double positive breast cancer (DPBC: ER+, PR+, Her-2) miRNA expression patterns were obtained by analysis of the TCGA (The Cancer Genome Atlas) data, followed by PCR-array analysis on plasma samples from 20 TNBC patients, 14 DPBC patients and 11 controls. Results Three downregulated and nine upregulated miRNAs were obtained from the TNBC analysis. Five overexpressed miRNAs were identified in the DPBC group. Four of the dysregulated miRNAs (miR-10a, miR-125b, miR-210 and miR-489) were common for both groups. The cluster miR-17-92 (miR-17, miR-20a, miR-20b, and miR-93), along with miR-130, miR-22 and miR-29a/c, were found to differentiate between TNBC and DPBC. A panel of five transcripts (miR-10a, miR-125, miR-193b, miR-200b and miR-489) was validated in a new set of plasma samples. The overlapping of TCGA and plasma profiling data revealed miR-200b, miR-200c, miR-210 and miR-29c as common signature. MiR-200b was validated on additional normal and tumor tissue samples. The expression level of this transcript from the TCGA data was correlated with lung and bone metastatic genes. Conclusion The miR-200b presents a great potential for the future advancements in the diagnostic/prognostic and therapeutic approach of TNBC, along with other coding or non-coding transcripts. However, this needs to be further integrated in a regulatory network that acts in conjunction with other markers that affect the patients’ prognosis or response to therapy. Electronic supplementary material The online version of this article (10.1186/s13046-018-0920-2) contains supplementary material, which is available to authorized users.
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13
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Li Y, Gu Y, Tang N, Liu Y, Zhao Z. miR-22-Notch Signaling Pathway Is Involved in the Regulation of the Apoptosis and Autophagy in Human Ovarian Cancer Cells. Biol Pharm Bull 2018; 41:1237-1242. [PMID: 30068873 DOI: 10.1248/bpb.b18-00084] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
microRNA-22 (miR-22) is a brain-enriched regulatory gene which has been reported to be involved in the development of cancers. The Notch signaling pathway exerts important functions in cell growth. This study is designed to investigate the mechanisms of miR-22-Notch signaling pathway in apoptosis and autophagy of human ovarian cancer cells. After over-expressing miR-22 in human ovarian cancer cell lines OVCAR-3 and SKOV3, cell viability is determined by 2,3-bis-(2-methoxy-4-nitro-5-sulfophenyl)-2H-tetrazolium-5-carboxanilide (XTT) method, cell apoptosis is observed by Flow cytometry (FCM), mRNA expression of miR-22 is measured by RNA preparation and RT-PCR, protein expression of Notch1, Hes1, Beclin1 and LC3B-II is analyzed by Western blot. It is suggested that miR-22 expression is heavily decreased in human ovarian cancer cell lines OVCAR-3 and SKOV3. Over-expression of miR-22 potently suppresses cell viability and authophagy while promotes the percentage of apoptotic cancer cells. In addition, the decreased expression level of Notch1 and its targeted gene is detected in miR-22-over-expressed cells. Moreover, followed by the block of the Notch signaling pathway using Notch1 small interference RNA (siRNA), the effects of miR-22 on the apoptosis and autophagy of human ovarian cancer cell lines OVCAR-3 and SKOV3 are obviously blocked. Together, miR-22 inhibits apoptosis and promotes autophagy of human ovarian cancer cells through the suppression of the Notch signaling pathway, indicating a potential use of miR-22 in the ovarian cancer treatment.
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Affiliation(s)
- Yan Li
- Department of Obstetrics and Gynecology, Tianjin Union Medicine Center
| | - Yanjun Gu
- Department of Pathology, Affiliated Hospital of Logistics University of People's Armed Police Force (PAPF)
| | - Na Tang
- Department of Obstetrics and Gynecology, Tianjin Union Medicine Center
| | - Yanqing Liu
- Department of Pathology, Affiliated Hospital of Logistics University of People's Armed Police Force (PAPF)
| | - Zhankao Zhao
- Department of Pathology, Affiliated Hospital of Logistics University of People's Armed Police Force (PAPF)
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14
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Fadaka AO, Ojo BA, Adewale OB, Esho T, Pretorius A. Effect of dietary components on miRNA and colorectal carcinogenesis. Cancer Cell Int 2018; 18:130. [PMID: 30202241 PMCID: PMC6127951 DOI: 10.1186/s12935-018-0631-y] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2018] [Accepted: 08/31/2018] [Indexed: 12/14/2022] Open
Abstract
Background Colorectal cancer (CRC) is one of the most common cancers diagnosed and among the commonest causes of cancer-related mortality globally. Despite the various available treatment options, millions of people still suffer from this illness and most of these treatment options have several limitations. Therefore, a less expensive, non-invasive or a treatment that requires the use of dietary products remains a focal point in this review. Main body Aberrant microRNA expression has been revealed to have a functional role in the initiation and progression of CRC. These has shown significant promise in the diagnosis and prognosis of CRC, owing to their unique expression profile associated with cancer types and malignancies. Moreover, microRNA therapeutics show a great promise in preclinical studies, and these encourage further development of their clinical use in CRC patients. Additionally, emerging studies show the chemo-preventive potential of dietary components in microRNA modulation using several CRC models. This review examines the dietary interplay between microRNAs and CRC incidence. Improving the understanding of the interactions between microRNAs and dietary components in the carcinogenesis of CRC will assist the study of CRC progression and finally, in developing personalized approaches for cancer prevention and therapy. Conclusion Although miRNA research is still at its infancy, it could serve as a promising predictive biomarkers and therapeutic targets for CRC. Given the ever-expanding number of miRNAs, understanding their functional aspects represents a promising option for further research.
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Affiliation(s)
- Adewale Oluwaseun Fadaka
- 1Department of Biotechnology, Faculty of Natural Sciences, University of the Western Cape, Cape Town, South Africa.,3Department of Biochemistry, Afe Babalola University, P.M.B. 5454, Ado-Ekiti, Ekiti State Nigeria
| | - Babajide A Ojo
- 2Department of Nutritional Science, Oklahoma State University, 301, Human Sciences, Stillwater, OK 74075 USA
| | - Olusola Bolaji Adewale
- 3Department of Biochemistry, Afe Babalola University, P.M.B. 5454, Ado-Ekiti, Ekiti State Nigeria
| | - Temitope Esho
- 4Institute of Biochemistry II, Medical Faculty, University of Cologne, Joseph-Stelzmann Str. 52, 50931 Cologne, Germany
| | - Ashley Pretorius
- Biotechnology Innovation Division, Aminotek PTY LTD, Suite 2C, Oude Westhof Village Square Bellville, 7530 South Africa
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15
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Alunni-Fabbroni M, Majunke L, Trapp EK, Tzschaschel M, Mahner S, Fasching PA, Fehm T, Schneeweiss A, Beck T, Lorenz R, Friedl TWP, Janni W, Rack B. Whole blood microRNAs as potential biomarkers in post-operative early breast cancer patients. BMC Cancer 2018; 18:141. [PMID: 29409452 PMCID: PMC5802058 DOI: 10.1186/s12885-018-4020-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 01/22/2018] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND microRNAs (miRNAs) are considered promising cancer biomarkers, showing high reliability, sensitivity and stability. Our study aimed to identify associations between whole blood miRNA profiles, presence of circulating tumor cells (CTCs) and clinical outcome in post-operative early breast cancer patients (EBC) to assess the utility of miRNAs as prognostic markers in this setting. METHOD A total of 48 post-operative patients, recruited in frame of the SUCCESS A trial, were included in this retrospective study and tested with a panel of 8 miRNAs (miR-10b, -19a, - 21, - 22, -20a, - 127, - 155, -200b). Additional 17 female healthy donors with no previous history of cancer were included in the study as negative controls. Blood samples were collected at different time points (pre-adjuvant therapy, post-adjuvant therapy, 2 years follow up), total RNA was extracted and the relative concentration of each miRNA was measured by quantitative PCR and compared in patients stratified on blood collection time or CTC detection. Furthermore, we compared miRNA profiles of patients, for each time point separately, and healthy donors. CTCs were visualized and quantified with immunocytochemistry analysis. Data were analyzed using non-parametric statistical tests. RESULTS In our experimental system, miR-19a, miR-22 and miR-127 showed the most promising results, differentiating patients at different time points and from healthy controls, while miR-20a, miR-21 and miR-200b did not show any difference among the different groups. miR-10b and miR-155 were never detectable in our experimental system. With respect to patients' clinical characteristics, we found a significant correlation between miR-200b and lymph node status and between miR-20a and tumor type. Furthermore, miR-127 correlated with the presence of CTCs. Finally, we found a borderline significance between Progression Free Survival and miR-19a levels. CONCLUSIONS This pilot study suggests that profiling whole blood miRNAs could help to better stratify post-operative EBC patients without any sign of metastasis to prevent later relapse or metastatic events.
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Affiliation(s)
- Marianna Alunni-Fabbroni
- Department of Gynecology and Obstetrics, University Hospital, LMU Munich, Munich, Germany. .,Laboratory for Experimental Radiology, Institute for Clinical Radiology, Ludwig-Maximilians-University Hospital, Marchioninistr. 15, 81377, Munich, Germany.
| | - Leonie Majunke
- Department of Gynecology and Obstetrics, University Hospital, LMU Munich, Munich, Germany
| | - Elisabeth K Trapp
- Department of Gynecology and Obstetrics, University Hospital, LMU Munich, Munich, Germany.,Department of Gynecology and Obstetrics, Medical University of Graz, Graz, Austria
| | - Marie Tzschaschel
- Department of Gynecology and Obstetrics, University Hospital, LMU Munich, Munich, Germany.,Department of Gynecology and Obstetrics, Medical University of Graz, Graz, Austria
| | - Sven Mahner
- Department of Gynecology and Obstetrics, University Hospital, LMU Munich, Munich, Germany
| | - Peter A Fasching
- Department of Gynecology and Obstetrics, Erlangen University Hospital, Erlangen, Germany
| | - Tanja Fehm
- Department of Gynecology and Obstetrics, Medical Faculty and University Hospital, Heinrich-Heine University, Düsseldorf, Germany
| | - Andreas Schneeweiss
- Department of Gynecology and Obstetrics, Heidelberg University Hospital, Heidelberg, Germany
| | - Thomas Beck
- RoMed Klinikum Rosenheim, Rosenheim, Germany
| | - Ralf Lorenz
- Gemeinschaftspraxis Lorenz / Hecker / Wesche, Braunschweig, Germany
| | - Thomas W P Friedl
- Department of Gynecology and Obstetrics, Ulm University Hospital, Ulm, Germany
| | - Wolfgang Janni
- Department of Gynecology and Obstetrics, Ulm University Hospital, Ulm, Germany
| | - Brigitte Rack
- Department of Gynecology and Obstetrics, University Hospital, LMU Munich, Munich, Germany.,Department of Gynecology and Obstetrics, Ulm University Hospital, Ulm, Germany
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Zhang L, Chen B, Ding D. Decreased microRNA-22 is associated with poor prognosis in cervical cancer. INTERNATIONAL JOURNAL OF CLINICAL AND EXPERIMENTAL PATHOLOGY 2017; 10:9515-9520. [PMID: 31966827 PMCID: PMC6965895] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 05/27/2017] [Accepted: 07/14/2017] [Indexed: 06/10/2023]
Abstract
Cervical cancer is one of the most lethal gynecological malignancy. Aberrant expression of microRNAs (miRNAs) is associated with carcinogenesis of cervical cancer. The aim of current study was to elucidate the clinical significance of miR-22 in patients with cervical cancer. The expression levels of miR-22 in cervical intraepithelial neoplasia (CIN) and cervical cancer tissues as well as cervical cancer cell lines were quantified using real-time PCR. Then the potential prognostic value of the miR-22 was assessed. Our results showed that the expression level of miR-22 was significantly lower in cervical cancer tissues and cell lines. miR-22 levels were inversely correlated clinical stage both in CIN and cervical cancer. In addition, low expression of miR-22 was significantly associated with larger tumor size, presence of lymph node metastasis, and advanced tumor stage. Moreover, the patients expressing low levels of miR-22 had poorer five year overall survival and disease free survival. Multivariate analysis identified miR-22 as an independent prognostic factor for cervical cancer patients' overall survival. Taken together, we demonstrate that the miR-22 may serve as a novel therapeutic target and prognostic marker in patients with cervical cancer.
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Affiliation(s)
- Lu Zhang
- Department of Gynecology, Beijing Obstetrics and Gynecology Hospital, Capital Medical UniversityBeijing, China
| | - Bin Chen
- Department of Gynecology, Haidian Maternal & Child Health HospitalBeijing, China
| | - Ding Ding
- Department of Gynecology, Amcare Women’s and Children’s HospitalBeijing, China
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17
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Response of MiRNA-22-3p and MiRNA-149-5p to Folate Deficiency and the Differential Regulation of MTHFR Expression in Normal and Cancerous Human Hepatocytes. PLoS One 2017; 12:e0168049. [PMID: 28045918 PMCID: PMC5207697 DOI: 10.1371/journal.pone.0168049] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 11/25/2016] [Indexed: 12/19/2022] Open
Abstract
Background/Aims Folic acid (FA) is a core micronutrient involved in DNA synthesis/methylation, and the metabolism of FA is responsible for genomic stability. MicroRNAs may affect gene expression during folate metabolism when cellular homeostasis is changed. This study aimed to reveal the relationship between FA deficiency and the expression of miR-22-p/miR-149-5p and the targeted regulation of miR-22-3p/miR-149-5p on the key folate metabolic gene Methylenetetrahydrofolate reductase (MTHFR). Methods Normal (HL-7702 cells) and cancerous (QGY-7703 cells) human hepatocytes were intervened in modified RPMI 1640 with FA deficiency for 21 days. The interaction between MTHFR and the tested miRNAs was verified by Dual-Luciferase Reporter Assays. The changes in the expression of miR-22-3p/miR-149-5p in response to FA deficiency were detected by Poly (A) Tailing RT-qPCR, and the expression of MTHFR at both the transcriptional and translational levels was determined by RT-qPCR and Western blotting, respectively. Result MiR-22-3p/miR-149-5p directly targeted the 3’UTR sequence of the MTHFR gene. FA deficiency led to an upregulation of miR-22-3p/miR-149-5p expression in QGY-7703/HL-7702 cells, while the transcription of MTHFR was decreased in QGY-7703 cells but elevated in HL-7702 cells. Western blotting showed that FA deficiency resulted in a decline of the MTHFR protein in QGY-7703 cells, whereas in HL-7702 cells, the MTHFR protein level remained constant. Conclusion The results suggested that miR-22-3p/miR-149-5p exert different post-transcriptional effects on MTHFR under conditions of FA deficiency in normal and cancerous human hepatocytes. The results also implied that miR-22-3p/miR-149-5p might exert anticancer effects in cases of long-term FA deficiency.
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18
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Chen J, Wu FX, Luo HL, Liu JJ, Luo T, Bai T, Li LQ, Fan XH. Berberine upregulates miR-22-3p to suppress hepatocellular carcinoma cell proliferation by targeting Sp1. Am J Transl Res 2016; 8:4932-4941. [PMID: 27904693 PMCID: PMC5126335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2016] [Accepted: 10/30/2016] [Indexed: 06/06/2023]
Abstract
MicroRNA-22-3p (miR-22-3p) is downregulated in hepatocellular carcinoma (HCC), which contributes to the development and progression of HCC. In this study, berberine treatment upregulated miR-22-3p expression in HepG2 cells. Therefore, we investigated whether berberine suppresses the proliferation of HCC cells and explored the underlying mechanism. The HCC HepG2 cell line was treated with a gradient of berberine concentrations (0-300 μM) for 48 h, and 100 μM berberine inhibited cell growth at 24 h. The HepG2 cells were then incubated with 100 μM berberine for 0-48 h, and after treatment for 24 h, berberine markedly suppressed HepG2 cell growth and significantly upregulated miR-22-3p expression. Berberine also downregulated the expression of SP1, CCND1, and BCL2, determined with western blotting. Dual luciferase reporter assays and western blot analyses showed that miR-22-3p directly targeted SP1, thereby suppressing the expression of its downstream targets, CCND1 and BCL2. SP1 knockdown with small interfering RNA also reduced CCND1 and BCL2 expression in HepG2 cells. Therefore, we conclude that berberine treatment suppresses cancer cell growth by regulating miR-22-3p and SP1 and its downstream targets, CCND1 and BCL2, in HCC.
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Affiliation(s)
- Jie Chen
- Department of Hepatobiliary Surgery, Affiliated Tumor Hospital of Guangxi Medical UniversityNanning 530021, China
| | - Fei-Xiang Wu
- Department of Hepatobiliary Surgery, Affiliated Tumor Hospital of Guangxi Medical UniversityNanning 530021, China
| | - Hong-Lin Luo
- Department of Hepatobiliary Surgery, Affiliated Tumor Hospital of Guangxi Medical UniversityNanning 530021, China
| | - Jun-Jie Liu
- Department of Hepatobiliary Surgery, Affiliated Tumor Hospital of Guangxi Medical UniversityNanning 530021, China
| | - Tao Luo
- Department of Hepatobiliary Surgery, Affiliated Tumor Hospital of Guangxi Medical UniversityNanning 530021, China
| | - Tao Bai
- Department of Hepatobiliary Surgery, Affiliated Tumor Hospital of Guangxi Medical UniversityNanning 530021, China
| | - Le-Qun Li
- Department of Hepatobiliary Surgery, Affiliated Tumor Hospital of Guangxi Medical UniversityNanning 530021, China
| | - Xiao-Hui Fan
- School of Preclinical Medicine, Guangxi Medical UniversityNanning 530021, China
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Role of Epithelial-Mesenchyme Transition in Chlamydia Pathogenesis. PLoS One 2015; 10:e0145198. [PMID: 26681200 PMCID: PMC4683008 DOI: 10.1371/journal.pone.0145198] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2015] [Accepted: 12/01/2015] [Indexed: 12/15/2022] Open
Abstract
Chlamydia trachomatis genital infection in women causes serious adverse reproductive complications, and is a strong co-factor for human papilloma virus (HPV)-associated cervical epithelial carcinoma. We tested the hypothesis that Chlamydia induces epithelial-mesenchyme transition (EMT) involving T cell-derived TNF-alpha signaling, caspase activation, cleavage inactivation of dicer and dysregulation of micro-RNA (miRNA) in the reproductive epithelium; the pathologic process of EMT causes fibrosis and fertility-related epithelial dysfunction, and also provides the co-factor function for HPV-related cervical epithelial carcinoma. Using a combination of microarrays, immunohistochemistry and proteomics, we showed that chlamydia altered the expression of crucial miRNAs that control EMT, fibrosis and tumorigenesis; specifically, miR-15a, miR-29b, miR-382 and MiR-429 that maintain epithelial integrity were down-regulated, while miR-9, mi-R-19a, miR-22 and miR-205 that promote EMT, fibrosis and tumorigenesis were up-regulated. Chlamydia induced EMT in vitro and in vivo, marked by the suppression of normal epithelial cell markers especially E-cadherin but up-regulation of mesenchymal markers of pathological EMT, including T-cadherin, MMP9, and fibronectin. Also, Chlamydia upregulated pro-EMT regulators, including the zinc finger E-box binding homeobox protein, ZEB1, Snail1/2, and thrombospondin1 (Thbs1), but down-regulated anti-EMT and fertility promoting proteins (i.e., the major gap junction protein connexin 43 (Cx43), Mets1, Add1Scarb1 and MARCKSL1). T cell-derived TNF-alpha signaling was required for chlamydial-induced infertility and caspase inhibitors prevented both infertility and EMT. Thus, chlamydial-induced T cell-derived TNF-alpha activated caspases that inactivated dicer, causing alteration in the expression of reproductive epithelial miRNAs and induction of EMT. EMT causes epithelial malfunction, fibrosis, infertility, and the enhancement of tumorigenesis of HPV oncogene-transformed epithelial cells. These findings provide a novel understanding of the molecular pathogenesis of chlamydia-associated diseases, which may guide a rational prevention strategy.
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Zuo QF, Cao LY, Yu T, Gong L, Wang LN, Zhao YL, Xiao B, Zou QM. MicroRNA-22 inhibits tumor growth and metastasis in gastric cancer by directly targeting MMP14 and Snail. Cell Death Dis 2015; 6:e2000. [PMID: 26610210 PMCID: PMC4670920 DOI: 10.1038/cddis.2015.297] [Citation(s) in RCA: 94] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 09/06/2015] [Accepted: 09/11/2015] [Indexed: 01/11/2023]
Abstract
MicroRNAs (miRNAs) deregulation is frequent in human gastric cancers (GCs), but the role of specific miRNAs involved in this disease remains elusive. MiR-22 was previously reported to act as tumor suppressors or oncogenes in diverse cancers. However, their accurate expression, function and mechanism in GC are largely unclear. Here, we found that the expression of miR-22 was significantly reduced in clinical GC tissues compared with paired adjacent normal tissues, and was significantly correlated with a more aggressive phenotype of GC in patients, and miR-22 low expression correlated with poor overall survival. The introduction of miR-22 markedly suppressed GC cell growth, migration and invasion, and inhibition of miR-22 promoted GC cell proliferation, migration and invasion in vitro. We further demonstrated that miR-22 acted as tumor suppressors through targeting extracellular matrix (ECM) remodeling member matrix metalloproteinase 14 (MMP14) and epithelial-to-mesenchymal transition (EMT) inducer Snail in GC. Moreover, ectopic expression of MMP14 or Snail restored inhibitory effects of miR-22 on cell migration and invasion in GC cells, and a negative relationship between the miR-22 expression and MMP14 or Snail mRNA levels was observed in GC. Finally, overexpression of miR-22 suppressed tumor growth, peritoneal dissemination and pulmonary metastasis in vivo. Taken together, we identified that miR-22 is a potent tumor suppressor in GC. MiR-22 downregulation promotes GC invasion and metastasis by upregulating MMP14 and Snail, and then inducing ECM remodeling and EMT. These findings provide a better understanding of the development and progression of GC and may be an important implication for future therapy of the GC.
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Affiliation(s)
- Q-F Zuo
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - L-Y Cao
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - T Yu
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - L Gong
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - L-N Wang
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Y-L Zhao
- General Surgery and Center of Minimally Invasive Gastrointestinal Surgery, Department of General Surgery, Southwest Hospital, Third Military Medical University, Chongqing 400038, China
| | - B Xiao
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
| | - Q-M Zou
- National Engineering Research Center of Immunological Products, Department of Microbiology and Biochemical Pharmacy, College of Pharmacy, Third Military Medical University, Chongqing 400038, China
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Zhang S, Zhang D, Yi C, Wang Y, Wang H, Wang J. MicroRNA-22 functions as a tumor suppressor by targeting SIRT1 in renal cell carcinoma. Oncol Rep 2015; 35:559-67. [PMID: 26499759 DOI: 10.3892/or.2015.4333] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2015] [Accepted: 07/30/2015] [Indexed: 11/05/2022] Open
Abstract
Accumulating evidence demonstrates that microRNA-22 (miR-22) was deregulated in many types of cancers and was involved in various cellular processes related to carcinogenesis. However, the exact roles and mechanisms of miR-22 remain unknown in human renal cell carcinoma (RCC). Here, the relationship between miR-22 expression pattern and clinicopathological features of patients with EOC were determined by real-time quantitative RT-PCR (qRT-PCR). Furthermore, the role of miR-22 and possible molecular mechanisms in EOC were investigated by several in vitro approaches and in a nude mouse model. Results from qRT-PCR showed that miR-22 was significantly downregulated in RCC samples compared with corresponding non-cancerous tissues, which was significantly associated with tumor stage and lymph node metastasis. Functional study demonstrated that enforced overexpression of miR-22 in renal cancer cells inhibited proliferation, migration and invasion, and induced cell apoptosis in vitro, and suppressed tumor growth in vivo. In addition, SIRT1 was identified as a direct target of miR-22 by a luciferase reporter assay. Overexpression of miR-22 activated p53 and its downstream target p21 and PUMA, and the apoptosis markers cleaved CASP3 and PARP, and inhibited epithelial-mesenchymal transition (EMT). These findings showed that miR-22 functioned as tumor suppressor in RCC and blocked RCC growth and metastasis by directly targeting SIRT1 in RCC, indicating a potential novel therapeutic role in RCC treatment.
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Affiliation(s)
- Shoulin Zhang
- Internal Medicine Department, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin 130021, P.R. China
| | - Dongmei Zhang
- Scientific Research Office, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin 130021, P.R. China
| | - Chunguang Yi
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun Jingyue National High-Tech Industrial Development Zone, Changchun, Jilin 130117, P.R. China
| | - Yinping Wang
- Internal Medicine Department, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin 130021, P.R. China
| | - Hongan Wang
- Internal Medicine Department, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin 130021, P.R. China
| | - Jian Wang
- Internal Medicine Department, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin 130021, P.R. China
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22
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Gong Z, Yang Q, Zeng Z, Zhang W, Li X, Zu X, Deng H, Chen P, Liao Q, Xiang B, Zhou M, Li X, Li Y, Xiong W, Li G. An integrative transcriptomic analysis reveals p53 regulated miRNA, mRNA, and lncRNA networks in nasopharyngeal carcinoma. Tumour Biol 2015; 37:3683-95. [PMID: 26462838 DOI: 10.1007/s13277-015-4156-x] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Accepted: 09/23/2015] [Indexed: 12/12/2022] Open
Abstract
It has been reported that p53 dysfunction is closely related to the carcinogenesis of nasopharyngeal carcinoma (NPC). Recently, an increasing body of evidence has indicated that microRNAs (miRNAs) and long noncoding RNAs (lncRNAs) participate in p53-associated signaling pathways and, in addition to mRNAs, form a complex regulation network to promote tumor occurrence and progression. The aim of this study was to elucidate the p53-regulated miRNAs, mRNAs, and lncRNAs and their regulating networks in NPC. Firstly, we overexpressed p53 in the NPC cell line HNE2 and performed transcriptomic gene expression profiling (GEP) analysis, which included miRNAs, mRNAs, and lncRNAs, using microarray technology at 0, 12, 24, and 48 h after transfection. There were 38 miRNAs (33 upregulated and 5 downregulated), 2107 mRNAs (296 upregulated and 1811 downregulated), and 1190 lncRNAs (133 upregulated and 1057 downregulated) that were significantly dysregulated by p53. Some of the dysregulated molecules were confirmed by quantitative real-time polymerase chain reaction (qRT-PCR). Then, we integrated previously published miRNAs, mRNAs, and lncRNAs GEP datasets from NPC biopsies to investigate the expression of these p53 regulated molecules and found that 7 miRNAs, 218 mRNAs, and 101 lncRNAs regulated by p53 were also differentially expressed in NPC tissues. Finally, p53-regulated miRNA, mRNA, and lncRNA networks were constructed using bioinformatics methods. These miRNAs, mRNAs, and lncRNAs may participate in p53 downstream signaling pathways and play important roles in the carcinogenesis of NPC. Thorough investigations of their biological functions and regulating relationships will provide a novel view of the p53 signaling pathway, and the restoration of p53 functioning or its downstream gene regulating network is potentially of great value in treating NPC patients.
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Affiliation(s)
- Zhaojian Gong
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Key Laboratory of Carcinogenesis of Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Qian Yang
- Key Laboratory of Carcinogenesis of Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China.,School of Nursing, Hunan Polytechnic of Environment and Biology, Hengyang, Hunan, China
| | - Zhaoyang Zeng
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China. .,Key Laboratory of Carcinogenesis of Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China. .,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Wenling Zhang
- Key Laboratory of Carcinogenesis of Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China
| | - Xiayu Li
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xuyu Zu
- Clinical Research Institution, the First Affiliated Hospital, University of South China, Hengyang, Hunan, China
| | - Hao Deng
- Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Pan Chen
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Qianjin Liao
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China
| | - Bo Xiang
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Key Laboratory of Carcinogenesis of Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ming Zhou
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Key Laboratory of Carcinogenesis of Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Xiaoling Li
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Key Laboratory of Carcinogenesis of Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yong Li
- Key Laboratory of Carcinogenesis of Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China.,Department of Cancer Biology, Lerner Research Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Wei Xiong
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Key Laboratory of Carcinogenesis of Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Guiyuan Li
- Hunan Cancer Hospital and the Affiliated Cancer Hospital of Xiangya School of Medicine, Central South University, Changsha, Hunan, China.,Key Laboratory of Carcinogenesis of Ministry of Health and Key Laboratory of Carcinogenesis and Cancer Invasion of Ministry of Education, Cancer Research Institute, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Nonresolving Inflammation and Cancer, Disease Genome Research Center, The Third Xiangya Hospital, Central South University, Changsha, Hunan, China
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Abstract
PURPOSE OF REVIEW This review highlights recent insights into the roles of microRNAs (miRNAs) in pathogenesis of myeloid malignancies and tantalising prospects of miRNA therapy. RECENT FINDINGS New roles for miRNAs in biological and disease processes are constantly being discovered. Although great effort has been put into identifying and cataloguing aberrantly expressed miRNAs in leukaemia, very little is known about the functional consequences of their deregulation in myeloid malignancies. This review will discuss the significance of powerful oncogenic miRNAs such as miR-22 in self-renewal and transformation of haematopoietic stem cells, as well as their ability to induce epigenetic alterations in the pathogenesis of the stem cell disorder myelodysplastic syndromes and myeloid leukaemia. SUMMARY Improved understanding of biological roles of miRNAs in the pathogenesis of haematological malignancies will allow rational stratification of patients and provide new therapeutic entries for the treatment of myelodysplastic syndromes and leukaemia.
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MicroRNA and Breast Cancer: Understanding Pathogenesis, Improving Management. Noncoding RNA 2015; 1:17-43. [PMID: 29861413 PMCID: PMC5932537 DOI: 10.3390/ncrna1010017] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2015] [Revised: 04/10/2015] [Accepted: 04/14/2015] [Indexed: 12/14/2022] Open
Abstract
The advent of the microRNAs in the early 1990s has proven to be a tremendously significant development within the purview of gene regulation. They participate in the regulation of a broad assembly of processes vital to proper cell function and the perturbation of these pathways following alteration of miRNA expression is strongly believed to contribute to the pathogenesis of cancer. This review provides a comprehensive overview of the miRNAs that have to date been well-characterized in the context of human breast neoplasia. Detailed discussion will center around their role in tumor initiation and progression, control of epithelial-mesenchymal transition (EMT), cancer stem cell formation, use as biomarkers in tissues and circulation, as well as their role in cancer treatment. In addition, attention will be given to topics which remain underexplored, such as miRNA control of cancer cell metabolism and the genomic/epigenetic origins underlying the preliminary disruption of miRNA expression in disease. This review will also address and attempt to resolve instances where discordant, inter-study findings have been reported (examples of which are replete in the literature) while also identifying bottlenecks hampering progress in miRNA research and other challenges that confront this fledgling but promising field of biomedical research.
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Melanoma epigenetics: novel mechanisms, markers, and medicines. J Transl Med 2014; 94:822-38. [PMID: 24978641 PMCID: PMC4479581 DOI: 10.1038/labinvest.2014.87] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 04/30/2014] [Accepted: 05/08/2014] [Indexed: 02/07/2023] Open
Abstract
The incidence and mortality rates of cutaneous melanoma continue to increase worldwide, despite the deployment of targeted therapies. Recently, there has been rapid growth and development in our understanding of epigenetic mechanisms and their role in cancer pathobiology. Epigenetics--defined as the processes resulting in heritable changes in gene expression beyond those caused by alterations in the DNA sequence--likely contain the information that encodes for such phenotypic variation between individuals with identical genotypes. By altering the structure of chromatin through covalent modification of DNA bases or histone proteins, or by regulating mRNA translation through non-coding RNAs, the epigenome ultimately determines which genes are expressed and which are kept silent. While our understanding of epigenetic mechanisms is growing at a rapid pace, the field of melanoma epigenomics still remains in its infancy. In this Pathology in Focus, we will briefly review the basics of epigenetics to contextualize and critically examine the existing literature using melanoma as a cancer paradigm. Our understanding of how dysregulated DNA methylation and DNA demethylation/hydroxymethylation, histone modification, and non-coding RNAs affect cancer pathogenesis and melanoma virulence, in particular, provides us with an ever-expanding repertoire of potential diagnostic biomarkers, therapeutic targets, and novel pathogenic mechanisms. The evidence reviewed herein indicates the critical role of epigenetic mechanisms in melanoma pathobiology and provides evidence for future targets in the development of next-generation biomarkers and therapeutics.
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