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Furci F, Allegra A, Tonacci A, Isola S, Senna G, Pioggia G, Gangemi S. Air Pollution and microRNAs: The Role of Association in Airway Inflammation. Life (Basel) 2023; 13:1375. [PMID: 37374157 DOI: 10.3390/life13061375] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Revised: 05/29/2023] [Accepted: 06/09/2023] [Indexed: 06/29/2023] Open
Abstract
Air pollution exposure plays a key role in the alteration of gene expression profiles, which can be regulated by microRNAs, inducing the development of various diseases. Moreover, there is also evidence of sensitivity of miRNAs to environmental factors, including tobacco smoke. Various diseases are related to specific microRNA signatures, suggesting their potential role in pathophysiological processes; considering their association with environmental pollutants, they could become novel biomarkers of exposure. Therefore, the aim of the present work is to analyse data reported in the literature on the role of environmental stressors on microRNA alterations and, in particular, to identify specific alterations that might be related to the development of airway diseases so as to propose future preventive, diagnostic, and therapeutic strategies.
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Affiliation(s)
- Fabiana Furci
- Allergy Unit and Asthma Center, Verona University Hospital, 37134 Verona, Italy
| | - Alessandro Allegra
- Division of Hematology, Department of Human Pathology in Adulthood and Childhood "Gaetano Barresi", University of Messina, 98124 Messina, Italy
| | - Alessandro Tonacci
- Clinical Physiology Institute, National Research Council of Italy (IFC-CNR), 56124 Pisa, Italy
| | - Stefania Isola
- School and Operative Unit of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98124 Messina, Italy
| | - Gianenrico Senna
- Allergy Unit and Asthma Center, Verona University Hospital, 37134 Verona, Italy
- Department of Medicine, Verona University Hospital, 37134 Verona, Italy
| | - Giovanni Pioggia
- Institute for Biomedical Research and Innovation (IRIB), National Research Council of Italy (CNR), 98164 Messina, Italy
| | - Sebastiano Gangemi
- School and Operative Unit of Allergy and Clinical Immunology, Department of Clinical and Experimental Medicine, University of Messina, 98124 Messina, Italy
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Dehmel S, Weiss KJ, El-merhie N, Callegari J, Konrad B, Mutze K, Eickelberg O, Königshoff M, Krauss-etschmann S. microRNA Expression Profile of Purified Alveolar Epithelial Type II Cells. Genes (Basel) 2022; 13:1420. [PMID: 36011331 PMCID: PMC9407429 DOI: 10.3390/genes13081420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 07/28/2022] [Accepted: 08/06/2022] [Indexed: 11/17/2022] Open
Abstract
Alveolar type II (ATII) cells are essential for the maintenance of the alveolar homeostasis. However, knowledge of the expression of the miRNAs and miRNA-regulated networks which control homeostasis and coordinate diverse functions of murine ATII cells is limited. Therefore, we asked how miRNAs expressed in ATII cells might contribute to the regulation of signaling pathways. We purified “untouched by antibodies” ATII cells using a flow cytometric sorting method with a highly autofluorescent population of lung cells. TaqMan® miRNA low-density arrays were performed on sorted cells and intersected with miRNA profiles of ATII cells isolated according to a previously published protocol. Of 293 miRNAs expressed in both ATII preparations, 111 showed equal abundances. The target mRNAs of bona fide ATII miRNAs were used for pathway enrichment analysis. This analysis identified nine signaling pathways with known functions in fibrosis and/or epithelial-to-mesenchymal transition (EMT). In particular, a subset of 19 miRNAs was found to target 21 components of the TGF-β signaling pathway. Three of these miRNAs (miR-16-5p, -17-5p and -30c-5p) were down-modulated by TGF-β1 stimulation in human A549 cells, and concomitant up-regulation of associated mRNA targets (BMPR2, JUN, RUNX2) was observed. These results suggest an important role for miRNAs in maintaining the homeostasis of the TGF-β signaling pathway in ATII cells under physiological conditions.
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Corona-Meraz FI, Vázquez-Del Mercado M, Ortega FJ, Ruiz-Quezada SL, Guzmán-Ornelas MO, Navarro-Hernández RE. Ageing influences the relationship of circulating miR-33a and miR- 33b levels with insulin resistance and adiposity. Diab Vasc Dis Res 2019; 16:244-253. [PMID: 30537863 DOI: 10.1177/1479164118816659] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
OBJECTIVE The identification of circulating microRNAs related to abnormal metabolic function may be useful in the context of ageing, adiposity and insulin resistance. The miR-33 a/b has been shown to control the expression of genes involved in fatty acid biosynthesis, impaired metabolism and insulin resistance. In this study, we aimed to identify differences in circulating miR-33 a/b levels according to age-related metabolic impairment and increased adiposity. METHODS This study included 80 individuals (30.2% with obesity, 70% females) classified according to insulin resistance (Stern's criteria) and age [young (20-39 years) and senior (40-59 years)]. Body fat was evaluated using bioelectrical impedance, biochemical markers by colorimetric, enzymatic and immuno-turbidimetry methods. TaqMan measures of circulating miR-33 a and miR-33 b with quantitative reverse transcription polymerase chain reaction in serum were assessed in association with clinical outputs. RESULTS Circulating miR-33 a and miR-33 b levels showed significant association with fatness, the lipid profile and biomarkers of impaired glucose metabolism. Both miR-33 a and miR-33 b were associated with visceral adiposity index in non-insulin resistance and insulin resistance individuals. More important, for miR-33 a circulating levels in senior group, receiver operating characteristic curve analyses showed area under the curve 0.804 ( p = 0.010; 95% confidence interval = 0.655-0.952). CONCLUSION Ageing influenced the relationship of circulating miR-33 a and miR-33 b with insulin resistance and increased adiposity.
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Affiliation(s)
- Fernanda-Isadora Corona-Meraz
- 1 Instituto de Investigación en Reumatología y del Sistema Musculo Esquelético, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
- 2 UDG-CA-701, Grupo de Investigación Inmunometabolismo en Enfermedades Emergentes, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
| | - Mónica Vázquez-Del Mercado
- 1 Instituto de Investigación en Reumatología y del Sistema Musculo Esquelético, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
- 3 Servicio de Reumatología, División de Medicina Interna, Hospital Civil 'Dr. Juan I. Menchaca', Universidad de Guadalajara, Guadalajara, México
- 4 UDG-CA-703, Grupo de Investigación en Inmunología y Reumatología, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
| | - Francisco José Ortega
- 5 CIBER de la Fisiopatología de la Obesidad y la Nutrición (CIBEROBN), Instituto de Salud Carlos III (ISCIII), Madrid, Spain
- 6 Service of Diabetes, Endocrinology and Nutrition (UDEN), Institut d'Investigació Biomédica de Girona (IDIBGI), Girona, Spain
| | - Sandra-Luz Ruiz-Quezada
- 7 UDG-CA-817 Investigación Genómica y Biomédica, Departamento de Farmacobiología, Centro Universitario de Ciencias Exactas e Ingenierías, Universidad de Guadalajara, Guadalajara, México
| | - Milton-Omar Guzmán-Ornelas
- 8 Departamento de Ciencias de la Salud-Enfermedad como Proceso Individual, División de Ciencias de la Salud, Centro Universitario de Tonalá, Universidad de Guadalajara, Tonalá, México
| | - Rosa-Elena Navarro-Hernández
- 1 Instituto de Investigación en Reumatología y del Sistema Musculo Esquelético, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
- 2 UDG-CA-701, Grupo de Investigación Inmunometabolismo en Enfermedades Emergentes, Centro Universitario de Ciencias de la Salud, Universidad de Guadalajara, Guadalajara, México
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Pennings JLA, Mariman R, Hodemaekers HM, Reemers SSN, Janssen R, Guichelaar T. Transcriptomics in lung tissue upon respiratory syncytial virus infection reveals aging as important modulator of immune activation and matrix maintenance. Sci Rep 2018; 8:16653. [PMID: 30413794 PMCID: PMC6226529 DOI: 10.1038/s41598-018-35180-2] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2018] [Accepted: 10/30/2018] [Indexed: 12/25/2022] Open
Abstract
Aging poses an increased risk of severe infection by respiratory syncytial virus (RSV). The many different biological pathways comprising the response to infection in lungs that are influenced by aging are complex and remain to be defined more thoroughly. Towards finding new directions in research on aging, we aimed to define biological pathways in the acute response to RSV that are affected in the lungs by aging. We therefore profiled the full transcriptome of lung tissue of mice prior to and during RSV infection both at young and old age. In the absence of RSV, we found aging to downregulate genes that are involved in constitution of the extracellular matrix. Moreover, uninfected old mice showed elevated expression of pathways that resemble injury, metabolic aberrations, and disorders mediated by functions of the immune system that were induced at young age only by an exogenous trigger like RSV. Furthermore, infection by RSV mounted stronger activation of anti-viral type-I interferon pathways at old age. Despite such exaggerated anti-viral responses, old mice showed reduced control of virus. Altogether, our findings emphasize important roles in aging-related susceptibility to respiratory disease for extracellular matrix dysfunctions and dysregulated immune activation in lungs.
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Affiliation(s)
- Jeroen L A Pennings
- Centre for Health Protection, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Rob Mariman
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Hennie M Hodemaekers
- Centre for Health Protection, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Sylvia S N Reemers
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands.,MSD Animal Health, Boxmeer, The Netherlands
| | - Riny Janssen
- Centre for Health Protection, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands
| | - Teun Guichelaar
- Centre for Infectious Disease Control, National Institute for Public Health and the Environment (RIVM), Bilthoven, The Netherlands.
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Kokkonen-Simon KM, Saberi A, Nakamura T, Ranek MJ, Zhu G, Bedja D, Kuhn M, Halushka MK, Lee DI, Kass DA. Marked disparity of microRNA modulation by cGMP-selective PDE5 versus PDE9 inhibitors in heart disease. JCI Insight 2018; 3:121739. [PMID: 30089721 DOI: 10.1172/jci.insight.121739] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Accepted: 06/26/2018] [Indexed: 12/13/2022] Open
Abstract
MicroRNAs (miRs) posttranscriptionally regulate mRNA and its translation into protein, and are considered master controllers of genes modulating normal physiology and disease. There is growing interest in how miRs change with drug treatment, and leveraging this for precision guided therapy. Here we contrast 2 closely related therapies, inhibitors of phosphodiesterase type 5 or type 9 (PDE5-I, PDE9-I), given to mice subjected to sustained cardiac pressure overload (PO). Both inhibitors augment cyclic guanosine monophosphate (cGMP) to activate protein kinase G, with PDE5-I regulating nitric oxide (NO) and PDE9-I natriuretic peptide-dependent signaling. While both produced strong phenotypic improvement of PO pathobiology, they surprisingly showed binary differences in miR profiles; PDE5-I broadly reduces more than 120 miRs, including nearly half those increased by PO, whereas PDE9-I has minimal impact on any miR (P < 0.0001). The disparity evolves after pre-miR processing and is organ specific. Lastly, even enhancing NO-coupled cGMP by different methods leads to altered miR regulation. Thus, seemingly similar therapeutic interventions can be barcoded by profound differences in miR signatures, and reversing disease-associated miR changes is not required for therapy success.
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Affiliation(s)
- Kristen M Kokkonen-Simon
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.,Cellular and Molecular Medicine Graduate Program, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Amir Saberi
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Taishi Nakamura
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Mark J Ranek
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Guangshuo Zhu
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Djahida Bedja
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - Michaela Kuhn
- Institute of Physiology, University of Würzburg, Würzburg, Germany
| | - Marc K Halushka
- Department of Pathology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Dong Ik Lee
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA
| | - David A Kass
- Division of Cardiology, Department of Medicine, The Johns Hopkins Medical Institutions, Baltimore, Maryland, USA.,Department of Pharmacology and Molecular Sciences, Johns Hopkins University, Baltimore, Maryland, USA
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de Vries M, Faiz A, Woldhuis RR, Postma DS, de Jong TV, Sin DD, Bossé Y, Nickle DC, Guryev V, Timens W, van den Berge M, Brandsma CA. Lung tissue gene-expression signature for the ageing lung in COPD. Thorax 2017; 73:thoraxjnl-2017-210074. [PMID: 29212667 DOI: 10.1136/thoraxjnl-2017-210074] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2017] [Revised: 11/01/2017] [Accepted: 11/06/2017] [Indexed: 01/06/2023]
Abstract
INTRODUCTION COPD is a chronic, progressive, inflammatory disease of the lungs and the third leading cause of death worldwide. The current knowledge of the pathophysiology of COPD is limited and novel insights in underlying disease mechanisms are urgently needed. Since there are clear parallels between ageing and COPD, we investigated genes underlying lung ageing in general and abnormal lung ageing in COPD. METHODS Whole genome mRNA profiling was performed on lung tissue samples (n=1197) and differential gene expression with increasing age was analysed using an adjusted linear regression model. Subsequent pathway analysis was performed using GeneNetwork and the gene-expression signature was compared with lung ageing in the Genotype-Tissue Expression (GTEx) project. In a subset of patients with COPD (n=311) and non-COPD controls (n=270), we performed an interaction analysis between age and COPD to identify genes differentially expressed with age in COPD compared with controls, followed by gene set enrichment pathway analysis. RESULTS We identified a strong gene-expression signature for lung ageing with 3509 differentially expressed genes, of which 33.5% were found nominal significant in the GTEx project. Interestingly, we found EDA2R as a strong candidate gene for lung ageing. The age*COPD interaction analysis revealed 69 genes significantly differentially expressed with age between COPD and controls. CONCLUSIONS Our study indicates that processes related to lung development, cell-cell contacts, calcium signalling and immune responses are involved in lung ageing in general. Pathways related to extracellular matrix, mammalian target of rapamycin signalling, splicing of introns and exons and the ribosome complex are proposed to be involved in abnormal lung ageing in COPD.
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Affiliation(s)
- Maaike de Vries
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Department of Epidemiology, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
| | - Alen Faiz
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Department of Pulmonary Diseases, Groningen, The Netherlands
| | - Roy R Woldhuis
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
| | - Dirkje S Postma
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Department of Pulmonary Diseases, Groningen, The Netherlands
| | - Tristan V de Jong
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
- European Research Institute for the Biology of Ageing, Universitair Medisch Centrum Groningen, Groningen, Netherlands
| | - Don D Sin
- Center for Heart Lung Innovation, St Paul's Hospital, The University of British Columbia, Vancouver, Canada
- Respiratory Division, University of British Columbia, Vancouver, Canada
| | - Yohan Bossé
- Institut Universitaire de Cardiologie et de Pneumologie de Québec, Laval University, Quebec, Canada
- Department of Molecular Medicine, Laval University, Quebec, Canada
| | | | - Victor Guryev
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
- European Research Institute for the Biology of Ageing, Universitair Medisch Centrum Groningen, Groningen, Netherlands
| | - Wim Timens
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
| | - Maarten van den Berge
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Department of Pulmonary Diseases, Groningen, The Netherlands
| | - Corry-Anke Brandsma
- University of Groningen, University Medical Center Groningen, Department of Pathology and Medical Biology, Groningen, The Netherlands
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD, Groningen, The Netherlands
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Politano G, Logrand F, Brancaccio M, Di Carlo S. In-silico cardiac aging regulatory model including microRNA post-transcriptional regulation. Methods 2017; 124:57-68. [DOI: 10.1016/j.ymeth.2017.06.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2017] [Revised: 05/26/2017] [Accepted: 06/02/2017] [Indexed: 12/28/2022] Open
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Xiao JH, Hao QY, Wang K, Paul J, Wang YX. Emerging Role of MicroRNAs and Long Noncoding RNAs in Healthy and Diseased Lung. Advances in Experimental Medicine and Biology 2017; 967:343-359. [DOI: 10.1007/978-3-319-63245-2_22] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Go H, La P, Namba F, Ito M, Yang G, Brydun A, Igarashi K, Dennery PA. MiR-196a regulates heme oxygenase-1 by silencing Bach1 in the neonatal mouse lung. Am J Physiol Lung Cell Mol Physiol 2016; 311:L400-11. [PMID: 27343195 DOI: 10.1152/ajplung.00428.2015] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2015] [Accepted: 06/18/2016] [Indexed: 12/30/2022] Open
Abstract
In the lung, heme oxygenase-1 (HO-1) is developmentally regulated, with its highest expression in the first days of life. In addition, neonatal mice have limited HO-1 induction in hyperoxia compared with adults. However, few reports have addressed the functional effect of microRNAs (miRNAs) in the regulation of HO-1 in vivo. The aims of the present study were to characterize changes in lung miRNA expression during postnatal development and in response to hyperoxic exposure, and to identify miRNAs that target lung HO-1 gene expression. Neonatal (<12 h old) and adult (2 mo old) mice were exposed to room air or hyperoxia (95% oxygen) for 72 h. TaqMan low-density array rodent miRNA assays were used to calculate miRNA expression changes between control and hyperoxia groups in neonatal and adult lungs. In neonates, we identified miR-196a, which binds to the 3'-untranslated region of the transcriptional repressor BTB and CNC homology 1 (Bach1) and regulates its expression, and subsequently leads to higher levels of lung HO-1 mRNA compared with levels in adults. Despite the increase at baseline, miR-196a was degraded in hyperoxia resulting in limited HO-1 induction in neonatal mice lungs. Furthermore, the developmental differences in lung HO-1 gene expression can be explained in part by the variation in miRNA-196a and its effect on Bach1. This report is the first to show developmental differences in lung miR-196a and its effect on Bach1 and HO-1 expression at baseline and in hyperoxia.
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Affiliation(s)
- Hayato Go
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Pediatrics, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Ping La
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Fumihiko Namba
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Pediatrics, Saitama Medical Center, Saitama, Japan
| | - Masato Ito
- Department of Pediatrics, Saitama Medical Center, Saitama, Japan
| | - Guang Yang
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Andrey Brydun
- Department of Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kazuhiko Igarashi
- Department of Biochemistry, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Phyllis A Dennery
- Department of Neonatology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania; Department of Pediatrics, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania and Alpert Medical School at Brown University, Providence, Rhode Island; and
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Midyat L, Gulen F, Karaca E, Ozkinay F, Tanac R, Demir E, Cogulu O, Aslan A, Ozkinay C, Onay H, Atasever M. MicroRNA expression profiling in children with different asthma phenotypes. Pediatr Pulmonol 2016; 51:582-7. [PMID: 26422695 DOI: 10.1002/ppul.23331] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 08/16/2015] [Accepted: 09/21/2015] [Indexed: 12/20/2022]
Abstract
An improved understanding of the molecular mechanisms in asthma through exploring the role of microRNAs may offer promise to reveal new approaches for primary prevention and identification of new therapeutic targets in childhood asthma. The primary goal of this study is to identify the microRNAs that play a role in the pathogenesis of asthma in pediatric age group. The secondary goal is to analyze these microRNAs according to the asthma phenotype, atopic status, and severity of the disease exacerbation. To our knowledge, this is the first research project in the literature which studies the relationship between microRNA expression and the severity of childhood asthma. One hundred children between 6 and 18 years old with a diagnosis of asthma, and 100 age-matched healthy children were enrolled in this study, and the analyses of microRNA expression profiles were performed in the Medical Genetics Laboratories of Ege University between November 2009 and June 2010. The expression of 10 microRNAs were shown to be higher in patients with more severe asthma, and the expression of these microRNAs were also found to be higher in patients who present with more severe acute asthma exacerbation symptoms (P < 0.001). Also, five microRNAs were found to be expressed more than twofold in allergic patients when compared to non-allergic participants (P <0.001). Asthma is one of the best examples of complex genetic diseases, and further studies, which will investigate the relationship between these microRNA's and their target genes, are needed to learn more about the specific roles of microRNAs in respiratory diseases. Pediatr Pulmonol. 2016;51:582-587. © 2015 Wiley Periodicals, Inc.
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Affiliation(s)
- Levent Midyat
- Division of Respiratory Diseases, Boston Children's Hospital, Harvard Medical School, Boston, Massachusetts
| | - Figen Gulen
- Division of Pulmonology-Allergy, Department of Pediatrics, Ege University School of Medicine, Izmir, Turkey
| | - Emin Karaca
- Department of Medical Genetics, Ege University Faculty of Medicine, Izmir, Turkey
| | - Ferda Ozkinay
- Department of Medical Genetics, Ege University Faculty of Medicine, Izmir, Turkey
| | - Remziye Tanac
- Division of Pulmonology-Allergy, Department of Pediatrics, Ege University School of Medicine, Izmir, Turkey
| | - Esen Demir
- Division of Pulmonology-Allergy, Department of Pediatrics, Ege University School of Medicine, Izmir, Turkey
| | - Ozgur Cogulu
- Department of Medical Genetics, Ege University Faculty of Medicine, Izmir, Turkey
| | - Asli Aslan
- Department of Pediatrics, Ege University Faculty of Medicine, Izmir, Turkey
| | - Cihangir Ozkinay
- Department of Medical Genetics, Ege University Faculty of Medicine, Izmir, Turkey
| | - Huseyin Onay
- Department of Medical Genetics, Ege University Faculty of Medicine, Izmir, Turkey
| | - Mesude Atasever
- Division of Pulmonology-Allergy, Department of Pediatrics, Ege University School of Medicine, Izmir, Turkey
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11
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Guo D, Ye Y, Qi J, Xu L, Zhang L, Tan X, Tan Z, Yu X, Zhang Y, Ma Y, Li Y. MicroRNA-195a-5p inhibits mouse medullary thymic epithelial cells proliferation by directly targeting Smad7. Acta Biochim Biophys Sin (Shanghai) 2016; 48:290-7. [PMID: 26837421 DOI: 10.1093/abbs/gmv136] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2015] [Accepted: 11/02/2015] [Indexed: 01/17/2023] Open
Abstract
MiR-195 has been implicated in inhibiting cell proliferation in different types of tumors. Whether it contributes to the process of thymic epithelial cells (TECs) proliferation remains unclear. In this study, we found that miR-195a-5p was highly up-regulated in the TECs isolated from the aging mice. Further experiments showed that miR-195a-5p mimic transfection inhibited the proliferation of mouse medullary thymic epithelial cell line 1 (MTEC1), whereas the transfection of miR-195a-5p inhibitor in MTEC1 had the opposite effect. In addition, miR-195a-5p had no obvious effect on MTEC1 apoptosis. Furthermore, Smad7, a negative regulator of transforming growth factor β pathway, was confirmed as a direct target of miR-195a-5p by luciferase assays. Taken together, our results indicate that miR-195a-5p inhibits MTEC1 proliferation, at least in part, via down-regulation of Smad7.
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Affiliation(s)
- Dongguang Guo
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yaqiong Ye
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Junjie Qi
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Lifeng Xu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Lihua Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Xiaotong Tan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Zhigang Tan
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Xiaofang Yu
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yuan Zhang
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yongjiang Ma
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
| | - Yugu Li
- College of Veterinary Medicine, South China Agricultural University, Guangzhou 510642, China
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12
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Wichadakul D. A Bioinformatics Method for the Design of Live Attenuated Virus Vaccine Utilizing Host MicroRNA Response Elements. Methods Mol Biol 2016; 1404:727-740. [PMID: 27076333 DOI: 10.1007/978-1-4939-3389-1_47] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
The host microRNA machinery has been employed to control viral replication. To improve safety for live attenuated virus vaccines, the binding sites of the host microRNAs, so-called microRNA response elements (MREs), were incorporated into the virus sequences. These MREs were typically designed for a specific host microRNA and virus sequence with the effectiveness evaluated by experimental trials. Here, we describe a computational flow that can be used to simultaneously design and prioritize the effective MREs in large-scale.
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Affiliation(s)
- Duangdao Wichadakul
- Department of Computer Engineering, Faculty of Engineering, Chulalongkorn University, Phaya Thai Road, Wangmai, Pathumwan, Bangkok, 10330, Thailand.
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13
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Abstract
Preclinical Research Idiopathic Pulmonary Fibrosis (IPF) is the most severe fibrotic lung disease and characterized by the accumulation of (myo)fibroblasts and collagen within the alveolar wall resulting in obliteration of the gas-exchange surface. Although the detailed pathogenesis is not understood, recent studies have found that several microRNAs (miRNAs) are associated with the progression of lung diseases including IPF. IPF is a fibrotic disease and, most frequently found in an aged population. In this review, the functional roles of miRNAs that are deregulated in IPF progression are discussed together with how aging affects the miRNA signature, altering the fibroblast phenotype and promoting lung fibrosis. Finally, the possibility of targeting miRNAs as a therapeutic approach for the treatment of IPF is discussed.
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14
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Liu X, Fu B, Chen D, Hong Q, Cui J, Li J, Bai X, Chen X. miR-184 and miR-150 promote renal glomerular mesangial cell aging by targeting Rab1a and Rab31. Exp Cell Res 2015; 336:192-203. [PMID: 26165933 DOI: 10.1016/j.yexcr.2015.07.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2014] [Revised: 06/18/2015] [Accepted: 07/06/2015] [Indexed: 01/12/2023]
Abstract
The molecular mechanism of kidney aging is not well understood, but the abnormal expression of miRNAs with aging is considered to be an important contributor. miR-184 and miR-150 were screened using a miRNA microarray and qRT-PCR and found to be significantly upregulated in 24-month-old rats. Rat renal primary glomerular mesangial cells (GMCs) were isolated from 3-month and 24-month-old rats for the in vitro analysis of the roles of miR-184 and miR-150 in kidney aging. Bioinformatics analyses suggested that Rab1a and Rab31, which are associated with cell autophagy, were targeted by both miR-184 and miR-150. miR-184 and miR-150 were increased significantly in aging GMCs versus young cells, while Rab1a and Rab31 were significantly lower in aging cells. Furthermore, dual luciferase reporter assays revealed that miR-184 and miR-150 bound to the 3'-UTR of Rab1a and Rab31 mRNAs. Transfection of miR-184 and miR-150 mimics into young GMCs suppressed the expression of Rab1a and Rab31. Transfected cells showed lower autophagy activities and higher levels of cellular oxidative products, leading to the aging of young GMCs. However, miR-184 and miR-150 inhibitors promoted autophagy and reduced oxidative damage by upregulating Rab1a and Rab31 in old GMCs. In conclusion, miR-184 and miR-150 inhibited autophagy, promoting GMC aging.
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Affiliation(s)
- Xiujuan Liu
- Department of Nephrology, State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital and Medical College, Beijing 100853, China; Department of Nephrology, 94 Hospital of Chinese PLA, Nanchang, Jiangxi, 330002, China
| | - Bo Fu
- Department of Nephrology, State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital and Medical College, Beijing 100853, China
| | - Dapeng Chen
- Department of Nephrology, State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital and Medical College, Beijing 100853, China
| | - Quan Hong
- Department of Nephrology, State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital and Medical College, Beijing 100853, China
| | - Jing Cui
- Department of Nephrology, State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital and Medical College, Beijing 100853, China
| | - Jin Li
- Department of Nephrology, State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital and Medical College, Beijing 100853, China
| | - Xueyuan Bai
- Department of Nephrology, State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital and Medical College, Beijing 100853, China.
| | - Xiangmei Chen
- Department of Nephrology, State Key Laboratory of Kidney Diseases, Chinese PLA General Hospital and Medical College, Beijing 100853, China.
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15
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Abstract
Since their initial discovery in the early 1990s, microRNAs have now become the focus of a multitude of lines of investigation ranging from basic biology to translational applications in the clinic. Previously believed to be of no biological relevance, microRNAs regulate processes fundamental to human health and disease. In diseases of the lung, microRNAs have been implicated in developmental programming, as drivers of disease, potential therapeutic targets, and clinical biomarkers; however, several obstacles must be overcome for us to fully realize their potential therapeutic use. Here, we provide for the clinician an overview of microRNA biology in selected diseases of the lung with a focus on their potential clinical application.
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Abstract
The cystic fibrosis lung is a complex milieu comprising multiple factors that coordinate its physiology. MicroRNAs are regulatory factors involved in most biological processes and it is becoming increasingly clear that they play a key role in the development and manifestations of CF lung disease. These small noncoding RNAs act posttranscriptionally to inhibit protein production. Their involvement in the pathogenesis of CF lung disease stems from the fact that their expression is altered in vivo in the CF lung due to intrinsic and extrinsic factors; to date defective chloride ion conductance, endoplasmic reticulum stress, inflammation, and infection have been implicated in altering endogenous miRNA expression in this setting. Here, the current state-of-the-art and biological consequences of altered microRNA expression in cystic fibrosis are reviewed.
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17
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Wang K, Li L, Wu J, Qiu Q, Zhou F, Wu H. The different expression profiles of microRNAs in elderly and young human dental pulp and the role of miR-433 in human dental pulp cells. Mech Ageing Dev 2015; 146-148:1-11. [PMID: 25778413 DOI: 10.1016/j.mad.2015.03.001] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2015] [Accepted: 03/09/2015] [Indexed: 01/11/2023]
Abstract
As a kind of endogenous noncoding small RNA, MicroRNA (miRNA) plays important roles of regulation to various physiological functions, while its affections on senescence of human dental pulp cell (HDPCs) are still unknown. Thus, we identified the senescence-associated miRNAs in HDPCs by microarray analysis, predicted their targets and regulatory signaling pathway by gene ontology and Kyoto encyclopedia of genes and genomes pathway database analysis. After validated, the senescence-associated miRNAs' expression level was up- and down-regulated using lentivirus package and cell transfection to find its role in HDPCs' morphology, proliferation, apoptosis, and mineralization. The results showed 27 miRNAs differentially expressed at least 1.5-fold, of which 16 were up-regulated and 11 down-regulated, the function of their targets was mainly focused on signal transduction, cell proliferation, apoptosis, and transcription regulation. According to the change fold, we speculated that miR-433 could be one of the vital senescence-associated miRNAs of HDPCs and found its target (GRB2), validated that miR-433 could negatively regulate GRB2 and the RAS-MAPK signaling pathway, leading to the decline of proliferation and mineralization ability of HDPCs and the acceleration of cell apoptosis, suggesting the regulation of miR-433 might be the potential target to promote repair and regeneration of HDPCs in the elderly.
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Affiliation(s)
- Kejing Wang
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Li Li
- Department of Stomatology, Zhoushan Hospital, Zhoushan, Zhejiang, China
| | - Junjun Wu
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Qin Qiu
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Fengjuan Zhou
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China
| | - Hongkun Wu
- State Key Laboratory of Oral Diseases, West China College of Stomatology, Sichuan University, Chengdu, China.
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Bouhaddioui W, Provost PR, Tremblay Y. Identification of most stable endogenous control genes for microRNA quantification in the developing mouse lung. PLoS One 2014; 9:e111855. [PMID: 25368994 PMCID: PMC4219792 DOI: 10.1371/journal.pone.0111855] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2014] [Accepted: 10/07/2014] [Indexed: 01/08/2023] Open
Abstract
MicroRNAs (miRNAs) are endogenous small non coding RNAs acting as negative regulators. miRNA are involved in lung development and pulmonary diseases. Measurement of their levels by qPCR is directly influenced by the stability of normalization gene(s), which can be affected by the experimental conditions. The developing lung is a changing tissue and one normalization gene showing stability on one developmental day may be modulated over time. Moreover, some developmental events are affected by sex, which also has to be considered. In this study, we compared stability of five putative control genes in the lung between sexes from the pseudoglandular to the alveolar stages and in adult lungs. Expression of sno135, sno142, sno202, sno234, and sno251 was studied by qPCR in male and female lung samples collected at seven time points from GD 15.5 to PN 30. Cq values of sno251 showed the highest variation across the different developmental stages, while sno234 was the most stable gene. Gene expression stability was studied by geNorm, NormFinder and BestKeeper. Our data showed that ranking of genes based on expression stability changed according to developmental time and sex. sno135/sno234 and sno142/sno234 were proposed as best combinations of normalization genes when both sexes and all the studied developmental stages are considered. Normalization of let7-a RNA levels with different pairs of control genes proposed by geNorm and NormFinder gave similar data, while the use of less stable genes introduced a statistically significant difference on PN 0. In conclusion, variations in stability of normalization gene expression are observed over time and according to sex during lung development. Best pairs of normalization genes are presented for specific developmental stages, and for the period extending from the pseudoglandular to the alveolar stages. The use of normalization genes selected for their expression stability is essential in lung development studies.
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Affiliation(s)
- Wafae Bouhaddioui
- Reproduction, Mother and Youth Health, Centre de recherche CHU de Québec, Québec, QC, Canada
- Centre de Recherche en Biologie de la Reproduction (CRBR), Faculté de Médecine, Université Laval, Québec, QC, Canada
| | - Pierre R. Provost
- Reproduction, Mother and Youth Health, Centre de recherche CHU de Québec, Québec, QC, Canada
- Department of Obstetrics/Gynecology & Reproduction, Faculty of Medicine, Université Laval, Québec, QC, Canada
- Centre de Recherche en Biologie de la Reproduction (CRBR), Faculté de Médecine, Université Laval, Québec, QC, Canada
| | - Yves Tremblay
- Reproduction, Mother and Youth Health, Centre de recherche CHU de Québec, Québec, QC, Canada
- Department of Obstetrics/Gynecology & Reproduction, Faculty of Medicine, Université Laval, Québec, QC, Canada
- Centre de Recherche en Biologie de la Reproduction (CRBR), Faculté de Médecine, Université Laval, Québec, QC, Canada
- * E-mail:
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19
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Abstract
The advent of techniques such as microarrays and high-throughput sequencing has revolutionized our ability to examine messenger RNA (mRNA) expression within the respiratory system. Importantly, these approaches have also uncovered the widespread expression of "noncoding RNAs," including microRNAs and long noncoding RNAs, which impact biologic responses through the regulation of mRNA transcription and/or translation. To date, most studies of the role of noncoding RNAs have focused on microRNAs, which regulate mRNA translation via the RNA interference pathway. These studies have shown changes in microRNA expression in cells and tissues derived from patients with asthma, pulmonary fibrosis, cystic fibrosis, COPD, and non-small cell lung cancer. Although the evidence is currently limited, we review the work that has been carried out in cell and animal models that has identified the function and mechanism of action of a small number of these microRNAs in disease etiology. In addition to microRNAs, we assess the emerging evidence that long noncoding RNAs regulate respiratory phenotype. Because these investigations into long noncoding RNAs were performed almost exclusively in non-small cell lung cancer, future work will need to extend these into other respiratory diseases and to analyze how microRNAs and long noncoding RNAs interact to regulate mRNA expression. From a clinical perspective, the targeting of noncoding RNAs as a novel therapeutic approach will require a deeper understanding of their function and mechanism of action. However, in the short term, changes in miRNA and long noncoding RNA expression are likely to be of use as biomarkers for disease stratification and/or assessment of drug action.
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Affiliation(s)
- Richard Booton
- Institute of Inflammation and Repair, The University of Manchester, Manchester, England; Manchester Academic Health Sciences Centre and North West Lung Centre, University Hospital of South Manchester, Manchester, England
| | - Mark A Lindsay
- Department of Pharmacy and Pharmacology, University of Bath, Claverton Down, Bath, England.
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20
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Linton PJ, Thoman ML. Immunosenescence in monocytes, macrophages, and dendritic cells: lessons learned from the lung and heart. Immunol Lett 2014; 162:290-7. [PMID: 25251662 DOI: 10.1016/j.imlet.2014.06.017] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2014] [Revised: 06/24/2014] [Accepted: 06/28/2014] [Indexed: 12/24/2022]
Abstract
In the absence of an immune challenge, healthy, aged individuals have a significantly higher basal inflammatory state where circulating levels of cytokines, including IL-6, TNF-α and IL-1β, are elevated [1]. This progressive pro-inflammatory state, termed "inflamm-aging", affects the phenotype/function of cells present in the aged as well as renders the older individuals more susceptible to a poor prognosis after systemic insults. Although it is important to understand the mechanisms that underlie the progression of disease, most preclinical analyses of disease therapies are performed in young adult mice that have an intact, functional immune system. Oftentimes, this is not necessarily representative of the immune disposition in the aged, let alone diseased, aged. Herein, two distinct responses that are not only commonly associated with aging but that also have dendritic cells and/or monocytes and macrophages as key players are discussed: pulmonary infection and myocardial infarction. Although studies of pulmonary infection in the aged have progressed significantly, studies of monocytes and macrophages in inflammation and cardiac injury following ischemia in the aged have not been as forthcoming. Nonetheless, several elegant studies have established the dynamic role of monocytes and macrophages post infarction. These will be discussed in light of what is known with aging.
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Affiliation(s)
- Phyllis-Jean Linton
- Donald P. Shiley BioScience Center, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182-4650, United States.
| | - Marilyn L Thoman
- Donald P. Shiley BioScience Center, San Diego State University, 5500 Campanile Drive, San Diego, CA 92182-4650, United States
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21
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Ye Y, Li D, Ouyang D, Deng L, Zhang Y, Ma Y, Li Y. MicroRNA expression in the aging mouse thymus. Gene 2014; 547:218-25. [DOI: 10.1016/j.gene.2014.06.039] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2014] [Revised: 06/05/2014] [Accepted: 06/19/2014] [Indexed: 01/03/2023]
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22
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Abstract
Lung cancer is a leading cause of cancer deaths worldwide. Development of lung cancer is associated with exposure to carcinogens such as tobacco smoke and some environmental factors. The incidence of lung cancer increases with age, particularly after age 60. It was estimated that less than 2% of all lung cancer cases occurred in patients younger than 45; therefore, this type of tumor can be considered as an aging-related disease. MicroRNAs (miRNAs) are small non-coding RNA molecules capable of regulating expression of over 50% of protein-coding genes. miRNAs were shown to play an extremely important role in cell functioning, affecting all biological processes, as well as development of various diseases. Expression profiles of miRNAs are known to be altered in cancer, including lung cancer, and also exhibit changes during aging. These RNA molecules are stable in tissue sections and blood and reflect tumor origin, histotype, and stage, which make them candidate diagnostic and prognostic biomarkers. miRNA mimetics or inhibitors can be delivered into a cell, with possible therapeutic implications. Here, we review the results obtained during the last several years that demonstrate the aging-related regulation of miRNAs expression, in association with their role in lung cancer initiation, progression, and resistance to anticancer therapy, as well as the possibility to use miRNAs as predictive biomarkers for treatment response.
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Affiliation(s)
- Anna Zagryazhskaya
- Institute of Environmental Medicine, Division of Toxicology, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden
| | - Boris Zhivotovsky
- Institute of Environmental Medicine, Division of Toxicology, Karolinska Institutet, Box 210, SE-171 77 Stockholm, Sweden; Faculty of Basic Medicine, MV Lomonosov Moscow State University, 119991 Moscow, Russia.
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23
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Zhang H, Yang H, Zhang C, Jing Y, Wang C, Liu C, Zhang R, Wang J, Zhang J, Zen K, Zhang C, Li D. Investigation of microRNA expression in human serum during the aging process. J Gerontol A Biol Sci Med Sci 2014; 70:102-9. [PMID: 25165030 DOI: 10.1093/gerona/glu145] [Citation(s) in RCA: 89] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
BACKGROUND Although serum microRNAs (miRNAs) play essential roles in the diagnosis of various diseases, little is known about circulating miRNAs in the aging process. METHODS Solexa sequencing technology was used for an initial miRNA screening of serum samples pooled from 21 healthy Chinese subjects with an average age of 22 years, 10 subjects with an average age of 40 years, 10 subjects with an average age of 59 years, and 9 subjects with an average age of 70 years. Other serum samples were obtained from 123 normal people with approximately 31 samples in each age period. A stem-loop quantitative reverse transcription-PCR assay was conducted to confirm the concentrations of the miRNAs altered in the aging process. RESULTS Solexa sequencing demonstrated 10 markedly altered miRNAs in the aging process. Quantitative reverse transcription-PCR analysis identified five downregulated miRNAs (miR-29b, miR-106b, miR-130b, miR-142-5p, and miR-340) and three upregulated miRNAs (miR-92a, miR-222, and miR-375) with age. Their target genes, related diseases, molecular and cellular functions, and participated pathways were further analyzed. CONCLUSIONS The measurement of miRNAs in serum provides a novel, noninvasive approach for the identification of the aging process. Our bioinformatic analyses could form a useful knowledge base for the potential future development of novel therapeutic treatments.
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Affiliation(s)
- Haiyang Zhang
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
| | - Hao Yang
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
| | - Chunni Zhang
- Department of Clinical Laboratory, Jinling Hospital, Clinical School of Medical College, Nanjing University, China
| | - Ying Jing
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
| | - Cheng Wang
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
| | - Chang Liu
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
| | - Rui Zhang
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
| | - Jin Wang
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
| | - Junfeng Zhang
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
| | - Ke Zen
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
| | - Chenyu Zhang
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
| | - Donghai Li
- Jiangsu Engineering Research Center for microRNA Biology and Biotechnology, State Key Laboratory of Pharmaceutical Biotechnology, School of Life Sciences and
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24
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MIMURA SHIMA, IWAMA HISAKAZU, KATO KIYOHITO, NOMURA KEI, KOBAYASHI MITSUYOSHI, YONEYAMA HIROHITO, MIYOSHI HISAAKI, TANI JOJI, MORISHITA ASAHIRO, HIMOTO TAKASHI, DEGUCHI AKIHIRO, NOMURA TAKAKO, SAKAMOTO TEPPEI, FUJITA KOJI, MAEDA EMIKO, IZUISHI KUNIHIKO, OKANO KEIICHI, SUZUKI YASUYUKI, MASAKI TSUTOMU. Profile of microRNAs associated with aging in rat liver. Int J Mol Med 2014; 34:1065-72. [DOI: 10.3892/ijmm.2014.1892] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2014] [Accepted: 07/30/2014] [Indexed: 11/05/2022] Open
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25
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Abstract
MicroRNAs (miRNAs) are a class of small noncoding RNA which exert post-transcriptional gene regulation activity by targeting messenger RNAs. miRNAs have been found to be involved in various fundamental biological processes and deregulation of miRNAs is known to result in pathological conditions. In this review, we provide an overview of recent discoveries on the role played by this class of molecules in lung development and in pulmonary diseases, such as asthma, cystic fibrosis, chronic obstructive pulmonary disease, and pulmonary artery hypertension. Considering the relevant role of these miRNAs under physiological and pathological conditions, they represent new clinical targets as well as diagnostic and prognostic tools. Therefore, this review pays special attention to recent advances and possible future directions for the use of miRNAs for clinical applications.
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Affiliation(s)
- Roberto Sessa
- Cardiovascular research institute, University of California San Francisco, CA 94158, USA
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26
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Lambert DW, Lambert LA, Clarke NE, Hooper NM, Porter KE, Turner AJ. Angiotensin-converting enzyme 2 is subject to post-transcriptional regulation by miR-421. Clin Sci (Lond) 2014; 127:243-9. [PMID: 24564768 DOI: 10.1042/CS20130420] [Citation(s) in RCA: 72] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
ACE2 (angiotensin converting enzyme 2) plays a critical role in the local tissue RAS (renin-angiotensin system) by hydrolysing the potent hypertensive and mitogenic peptide AngII (angiotensin II). Changes in the levels of ACE2 have been observed in a number of pathologies, including cardiovascular disease, but little is known of the mechanisms regulating its expression. In the present study, therefore, the potential role of miRNAs in the regulation of ACE2 expression in primary human cardiac myofibroblasts was examined. Putative miRNA-binding sites were identified in the 3'-UTR of the ACE2 transcript using online prediction algorithms. Two of these, miR-200b and miR-421, were selected for further analysis. A reporter system using the 3'-UTR of ACE2 fused to the coding region of firefly luciferase was used to determine the functionality of the identified binding sites in vitro. This identified miR-421, but not miR-200b, as a potential regulator of ACE2. The ability of miR-421, an miRNA implicated in the development of thrombosis, to down-regulate ACE2 expression was subsequently confirmed by Western blot analysis of both primary cardiac myofibroblasts and transformed cells transfected with a synthetic miR-421 precursor. Real-time PCR analysis of miR-421 revealed widespread expression in human tissues. miR-421 levels in cardiac myofibroblasts showed significant inter-patient variability, in keeping with the variability of ACE2 expression we have observed previously. In conclusion, the present study is the first to demonstrate that ACE2 may be subject to post-transcriptional regulation and reveals a novel potential therapeutic target, miR-421, which could be exploited to modulate ACE2 expression in disease.
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Mercken EM, Majounie E, Ding J, Guo R, Kim J, Bernier M, Mattison J, Cookson MR, Gorospe M, de Cabo R, Abdelmohsen K. Age-associated miRNA alterations in skeletal muscle from rhesus monkeys reversed by caloric restriction. Aging (Albany NY) 2014; 5:692-703. [PMID: 24036467 PMCID: PMC3808701 DOI: 10.18632/aging.100598] [Citation(s) in RCA: 87] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The levels of microRNAs (miRNAs) are altered under different conditions such as cancer, senescence, and aging. Here, we have identified differentially expressed miRNAs in skeletal muscle from young and old rhesus monkeys using RNA sequencing. In old muscle, several miRNAs were upregulated, including miR-451, miR-144, miR-18a and miR-15a, while a few miRNAs were downregulated, including miR-181a and miR-181b. A number of novel miRNAs were also identified, particularly in old muscle. We also examined the impact of caloric restriction (CR) on miRNA abundance by reverse transcription (RT) followed by real-time, quantitative (q)PCR analysis and found that CR rescued the levels of miR-181b and chr1:205580546, and also dampened the age-induced increase in miR-451 and miR-144 levels. Our results reveal that there are changes in expression of known and novel miRNAs with skeletal muscle aging and that CR may reverse some of these changes to a younger phenotype.
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Affiliation(s)
- Evi M Mercken
- Experimental Gerontology Section, Translational Gerontology Branch, National Institute on Aging, National Institutes of Health, Baltimore, MD 21224, USA
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Rolewska P, Simm A, Silber RE, Bartling B. Reduced expression level of the cyclic adenosine monophosphate response element-binding protein contributes to lung aging. Am J Respir Cell Mol Biol 2014; 50:201-11. [PMID: 23991634 DOI: 10.1165/rcmb.2013-0057oc] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Lung aging is associated with morphological and physiological changes in which alterations in transcription factors, including the cyclic adenosine monophosphate response element-binding protein (CREB), could play a role. We studied CREB in lung tissue from mice at different ages and in response to known age-related factors (e.g., cellular senescence and matrix modifications with advanced glycation end-products [AGEs]). Our study shows that protein but not mRNA levels of CREB are reduced in the lungs of old mice. CREB reduction was also observed in senescent human lung fibroblasts (WI-38, LuFi) and human lung epithelial cells (A549) cultured on AGE-modified collagen matrix. Reduction of CREB protein is partially based on pre- and posttranslational modifications as exhibited by an increase in the CREB-regulating microRNA 34b and CREB ubiquitination. Permanent down-regulation of CREB in lung cells impaired cell proliferation and viability and increased the number of cells with senescence-associated β-galactosidase activity. CREB down-regulation was accompanied by the reduced expression of 165 genes in WI-38 fibroblasts and A549 epithelial cells, of which 15 genes showed a reduced expression in lung tissues of old mice. The CREB-dependent reduction in RAB27A coding for the Ras-related protein Rab27A and IGFBP3 coding for the insulin-like growth factor-binding protein 3 has been confirmed for aged lung tissue, senescent fibroblasts, and lung epithelial cells on AGE-modified collagen. Our data demonstrate that the reduced protein expression of CREB might play a significant role in lung aging by modifying the transcription of RAB27A, IGFBP3, and other target genes.
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Affiliation(s)
- Paulina Rolewska
- 1 Department of Cardio-Thoracic Surgery, University Hospital Halle/Saale, Martin Luther University Halle-Wittenberg, Halle/Saale, Germany
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29
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Wansleeben C, Bowie E, Hotten DF, Yu YRA, Hogan BLM. Age-related changes in the cellular composition and epithelial organization of the mouse trachea. PLoS One 2014; 9:e93496. [PMID: 24675804 PMCID: PMC3968161 DOI: 10.1371/journal.pone.0093496] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 03/05/2014] [Indexed: 01/25/2023] Open
Abstract
We report here senescent changes in the structure and organization of the mucociliary pseudostratified epithelium of the mouse trachea and main stem bronchi. We confirm previous reports of the gradual appearance of age-related, gland-like structures (ARGLS) in the submucosa, especially in the intercartilage regions and carina. Immunohistochemistry shows these structures contain ciliated and secretory cells and Krt5+ basal cells, but not the myoepithelial cells or ciliated ducts typical of normal submucosal glands. Data suggest they arise de novo by budding from the surface epithelium rather than by delayed growth of rudimentary or cryptic submucosal glands. In old mice the surface epithelium contains fewer cells per unit length than in young mice and the proportion of Krt5+, p63+ basal cells is reduced in both males and females. However, there appears to be no significant difference in the ability of basal stem cells isolated from individual young and old mice to form clonal tracheospheres in culture or in the ability of the epithelium to repair after damage by inhaled sulfur dioxide. Gene expression analysis by Affymetrix microarray and quantitative PCR, as well as immunohistochemistry and flow sorting studies, are consistent with low-grade chronic inflammation in the tracheas of old versus young mice and an increase in the number of immune cells. The significance of these changes for ARGL formation are not clear since several treatments that induce acute inflammation in young mice did not result in budding of the surface epithelium.
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Affiliation(s)
- Carolien Wansleeben
- Department of Cell Biology, Duke University Medical Centre, Durham, North Carolina, United States of America
| | - Emily Bowie
- Department of Cell Biology, Duke University Medical Centre, Durham, North Carolina, United States of America
| | - Danielle F. Hotten
- Department of Medicine, Duke University Medical Centre, Durham, North Carolina, United States of America
| | - Yen-Rei A. Yu
- Department of Medicine, Duke University Medical Centre, Durham, North Carolina, United States of America
| | - Brigid L. M. Hogan
- Department of Cell Biology, Duke University Medical Centre, Durham, North Carolina, United States of America
- * E-mail:
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Ramachandran S, Karp PH, Osterhaus SR, Jiang P, Wohlford-Lenane C, Lennox KA, Jacobi AM, Praekh K, Rose SD, Behlke MA, Xing Y, Welsh MJ, McCray PB. Post-transcriptional regulation of cystic fibrosis transmembrane conductance regulator expression and function by microRNAs. Am J Respir Cell Mol Biol 2014; 49:544-51. [PMID: 23646886 DOI: 10.1165/rcmb.2012-0430oc] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
MicroRNAs (miRNAs) are increasingly recognized as important posttranscriptional regulators of gene expression, and changes in their actions can contribute to disease states. Little is understood regarding miRNA functions in the airway epithelium under normal or diseased conditions. We profiled miRNA expression in well-differentiated primary cultures of human cystic fibrosis (CF) and non-CF airway epithelia, and discovered that miR-509-3p and miR-494 concentrations were increased in CF epithelia. Human non-CF airway epithelia, transfected with the mimics of miR-509-3p or miR-494, showed decreased cystic fibrosis transmembrane conductance regulator (CFTR) expression, whereas their respective anti-miRs exerted the opposite effect. Interestingly, the two miRNAs acted cooperatively in regulating CFTR expression. Upon infecting non-CF airway epithelial cells with Staphylococcus aureus, or upon stimulating them with the proinflammatory cytokines TNF-α or IL-1β, we observed an increased expression of both miRNAs and a concurrent decrease in CFTR expression and function, suggesting that inflammatory mediators may regulate these miRNAs. Transfecting epithelia with anti-miRs for miR-509-3p and miR-494, or inhibiting NF-κB signaling before stimulating cells with TNFα or IL-1β, suppressed these responses, suggesting that the expression of both miRNAs was responsive to NF-κB signaling. Thus, miR-509-3p and miR-494 are dynamic regulators of CFTR abundance and function in normal, non-CF airway epithelia.
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Li J, Dong J, Zhang ZH, Zhang DC, You XY, Zhong Y, Chen MS, Liu SM. miR-10a restores human mesenchymal stem cell differentiation by repressing KLF4. J Cell Physiol 2014; 228:2324-36. [PMID: 23696417 PMCID: PMC4285942 DOI: 10.1002/jcp.24402] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2012] [Accepted: 05/07/2013] [Indexed: 12/20/2022]
Abstract
miRNAs have recently been shown to play a significant role in human aging. However, data demonstrating the effects of aging-related miRNAs in human mesenchymal stem cells (hMSCs) are limited. We observed that hMSC differentiation decreased with aging. We also identified that miR-10a expression was significantly decreased with age by comparing the miRNA expression of hMSCs derived from young and aged individuals. Therefore, we hypothesized that the downregulation of miR-10a may be associated with the decreased differentiation capability of hMSCs from aged individuals. Lentiviral constructs were used to up- or downregulate miR-10a in young and old hMSCs. Upregulation of miR-10a resulted in increased differentiation to adipogenic, osteogenic, and chondrogenic lineages and in reduced cell senescence. Conversely, downregulation of miR-10a resulted in decreased cell differentiation and increased cell senescence. A chimeric luciferase reporter system was generated, tagged with the full-length 3′-UTR region of KLF4 harboring the seed-matched sequence with or without four nucleotide mutations. These constructs were cotransfected with the miR-10a mimic into cells. The luciferase activity was significantly repressed by the miR-10a mimic, proving the direct binding of miR-10a to the 3′-UTR of KLF4. Direct suppression of KLF4 in aged hMSCs increased cell differentiation and decreased cell senescence. In conclusion, miR-10a restores the differentiation capability of aged hMSCs through repression of KLF4. Aging-related miRNAs may have broad applications in the restoration of cell dysfunction caused by aging. J. Cell. Physiol. 228: 2324–2336, 2013. © The Authors. Published by Wiley Periodicals, Inc.
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Affiliation(s)
- Jiao Li
- Department of Cardiology, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou Institute of Cardiovascular Disease, Guangzhou, China
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Abstract
The lung constitutes one of the most delicate tissue structures in mammalian organisms to accomplish the vital function of gas exchange. On the other hand, its immense surface area, necessary in this context, exhibits the first line of defense against a variety of pro-inflammatory stimuli.MicroRNAs (miRNAs) are a class of post-transcriptional regulators that revolutionized our view of gene expression regulation. By now, it is well established that miRNAs impair all known cellular and developmental processes. Extensive research over the last years revealed not only a fundamental role for miRNAs in lung development and homeostasis, but also in the process of lung inflammation. Lung inflammation occurs in response to stimuli very different in nature (e.g., physical, radioactive, infective, pro-allergenic, or toxic), and in some cases becomes manifest in chronic diseases (e.g., chronic bronchitis/chronic obstructive pulmonary disease (COPD), asthma and allergic airway diseases) or even lung cancer.This review chapter will briefly describe the current knowledge concerning miRNA expression and their exerted target regulation in the course of lung inflammation and lung cancer.
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Affiliation(s)
- Alexandra Sittka
- Department of Molecular Pulmonology, Philipps-University Marburg, Marburg, Germany.
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Jazbutyte V, Fiedler J, Kneitz S, Galuppo P, Just A, Holzmann A, Bauersachs J, Thum T. MicroRNA-22 increases senescence and activates cardiac fibroblasts in the aging heart. Age (Dordr) 2013; 35:747-62. [PMID: 22538858 PMCID: PMC3636396 DOI: 10.1007/s11357-012-9407-9] [Citation(s) in RCA: 128] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Accepted: 03/28/2012] [Indexed: 05/07/2023]
Abstract
MicroRNAs (miRs) are small non- coding RNA molecules controlling a plethora of biological processes such as development, cellular survival and senescence. We here determined miRs differentially regulated during cardiac postnatal development and aging. Cardiac function, morphology and miR expression profiles were determined in neonatal, 4 weeks, 6 months and 19 months old normotensive male healthy C57/Bl6N mice. MiR-22 was most prominently upregulated during cardiac aging. Cardiac expression of its bioinformatically predicted target mimecan (osteoglycin, OGN) was gradually decreased with advanced age. Luciferase reporter assays validated mimecan as a bona fide miR-22 target. Both, miR-22 and its target mimecan were co- expressed in cardiac fibroblasts and smooth muscle cells. Functionally, miR-22 overexpression induced cellular senescence and promoted migratory activity of cardiac fibroblasts. Small interference RNA-mediated silencing of mimecan in cardiac fibroblasts mimicked the miR-22-mediated effects. Rescue experiments revealed that the effects of miR-22 on cardiac fibroblasts were only partially mediated by mimecan. In conclusion, miR-22 upregulation in the aging heart contributed at least partly to accelerated cardiac fibroblast senescence and increased migratory activity. Our results suggest an involvement of miR-22 in age-associated cardiac changes, such as cardiac fibrosis.
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Affiliation(s)
- Virginija Jazbutyte
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Jan Fiedler
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Susanne Kneitz
- Microarray Core Facility, Interdisciplinary Centre of Clinical Research, University of Würzburg, Würzburg, Germany
| | - Paolo Galuppo
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Annette Just
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Angelika Holzmann
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
| | - Johann Bauersachs
- Department of Cardiology and Angiology, Hannover Medical School, Hannover, Germany
| | - Thomas Thum
- Institute of Molecular and Translational Therapeutic Strategies (IMTTS), IFB-Tx, Hannover Medical School, Carl-Neuberg-Str. 1, 30625 Hannover, Germany
- Centre for Clinical and Basic Research, IRCCS San Raffaele, Rome, Italy
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Abstract
MicroRNAs (miRNAs) are small non-coding RNA molecules that negatively regulate gene expression of their targets at the post-transcriptional levels. A single miRNA can target up to several hundred mRNAs, thus capable of significantly altering gene expression regulatory networks. In-depth study and characterization of miRNAs has elucidated their critical functions in development, homeostasis, and disease. A link between miRNAs and longevity has been demonstrated in C. elegans, implicating their role in regulation of lifespan and in the aging process. Recent years have witnessed unprecedented technological advances in studies of miRNAs, including ultra-high throughput sequencing technologies that allow comprehensive discovery of miRNAs and their targets. Here we review the latest experimental approaches from the perspective of understanding miRNA gene expression regulatory networks in aging. We provide a methodological work flow that can be employed to discover aging-related miRNAs and their targets, and to functionally validate their roles in aging. Finally, we review the links between miRNAs known to act in the conserved pathways of aging and major aging-related diseases. Taken together, we hope to provide a focused review to facilitate future endeavor of uncovering the functional role of miRNA in aging.
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Affiliation(s)
- Hwa Jin Jung
- Departments of Genetics and Medicine, Albert Einstein College of Medicine, Bronx, USA
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Esslinger SM, Schwalb B, Helfer S, Michalik KM, Witte H, Maier KC, Martin D, Michalke B, Tresch A, Cramer P, Förstemann K. Drosophila miR-277 controls branched-chain amino acid catabolism and affects lifespan. RNA Biol 2013; 10:1042-56. [PMID: 23669073 PMCID: PMC3904584 DOI: 10.4161/rna.24810] [Citation(s) in RCA: 59] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Abstract
Development, growth and adult survival are coordinated with available metabolic resources, ascertaining that the organism responds appropriately to environmental conditions. MicroRNAs are short (21-23 nt) regulatory RNAs that confer specificity on the RNA-induced silencing complex (RISC) to inhibit a given set of mRNA targets. We profiled changes in miRNA expression during adult life in Drosophila melanogaster and determined that miR-277 is downregulated during adult life. Molecular analysis revealed that this miRNA controls branched-chain amino acid (BCAA) catabolism and as a result it can modulate the activity of the TOR kinase, a central growth regulator, in cultured cells. Metabolite analysis in cultured cells as well as flies suggests that the mechanistic basis may be an accumulation of branched-chain α-keto-acids (BCKA), rather than BCAAs, thus avoiding potentially detrimental consequences of increased branched chain amino acid levels on e.g., translational fidelity. Constitutive miR-277 expression shortens lifespan and is synthetically lethal with reduced insulin signaling, indicating that metabolic control underlies this phenotype. Transgenic inhibition with a miRNA sponge construct also shortens lifespan, in particular on protein-rich food. Thus, optimal metabolic adaptation appears to require tuning of cellular BCAA catabolism by miR-277.
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Affiliation(s)
- Stephanie Maria Esslinger
- Gene Center and Department of Biochemistry, Ludwig-Maximilians-Universität München, Feodor-Lynen-Strasse 25, München, Germany
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Dallaire A, Garand C, Paquel ER, Mitchell SJ, de Cabo R, Simard MJ, Lebel M. Down regulation of miR-124 in both Werner syndrome DNA helicase mutant mice and mutant Caenorhabditis elegans wrn-1 reveals the importance of this microRNA in accelerated aging. Aging (Albany NY) 2013; 4:636-47. [PMID: 23075628 PMCID: PMC3492227 DOI: 10.18632/aging.100489] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Small non-coding microRNAs are believed to be involved in the mechanism of aging but nothing is known on the impact of microRNAs in the progeroid disorder Werner syndrome (WS). WS is a premature aging disorder caused by mutations in a RecQ-like DNA helicase. Mice lacking the helicase domain of the WRN ortholog exhibit many phenotypic features of WS, including a pro-oxidant status and a shorter mean life span. Caenorhabditis elegans (C. elegans) with a nonfunctional wrn-1 DNA helicase also exhibit a shorter life span. Thus, both models are relevant to study the expression of microRNAs involved in WS. In this study, we show that miR-124 expression is lost in the liver of Wrn helicase mutant mice. Interestingly, the expression of this conserved miR-124 in whole wrn-1 mutant worms is also significantly reduced. The loss of mir-124 in C. elegans increases reactive oxygen species formation and accumulation of the aging marker lipofuscin, reduces whole body ATP levels and results in a reduction in life span. Finally, supplementation of vitamin C normalizes the median life span of wrn-1 and mir-124 mutant worms. These results suggest that biological pathways involving WRN and miR-124 are conserved in the aging process across different species.
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Affiliation(s)
- Alexandra Dallaire
- Centre de Recherche en Cancérologie de l'Université Laval, Hôpital Hôtel-Dieu de Québec, Québec City, Québec, Canada
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Kapetanaki MG, Mora AL, Rojas M. Influence of age on wound healing and fibrosis. J Pathol 2013; 229:310-22. [PMID: 23124998 DOI: 10.1002/path.4122] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Revised: 09/30/2012] [Accepted: 10/02/2012] [Indexed: 12/18/2022]
Abstract
The incidence and severity of fibrotic lung diseases increase with age, but very little is known about how age-related changes affect the mechanisms that underlie disease emergence and progression. Normal ageing includes accumulation of DNA mutations, oxidative and cell stresses, mitochondria dysfunction, increased susceptibility to apoptosis, telomere length dysfunction and differential gene expression as a consequence of epigenetic changes and miR regulation. These inevitable ageing-related phenomena may cause dysfunction and impaired repair capacity of lung epithelial cells, fibroblasts and MSCs. As a consequence, the composition of the extracellular matrix changes and the dynamic interaction between cells and their environment is damaged, resulting ultimately in predisposition for several diseases. This review summarizes what is known about age-related molecular changes that are implicated in the pathobiology of lung fibrosis in lung tissue.
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Affiliation(s)
- Maria G Kapetanaki
- Dorothy P and Richard P Simmons Center for Interstitial Lung Disease, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
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Yang Y, Pu XD, Qing K, Guo XR, Zhou XY, Zhou XG. Identification of differentially expressed microRNAs and the possible role of miRNA-126* in Sprague-Dawley rats during fetal lung development. Mol Med Rep 2012; 7:65-72. [PMID: 23076204 DOI: 10.3892/mmr.2012.1130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2012] [Accepted: 10/05/2012] [Indexed: 11/05/2022] Open
Abstract
The aim of this study was to conduct a search for microRNAs (miRNAs) that are significant in fetal lung develop-ment to lay a foundation for further studies in the relevant fields. In this study, histological observation was performed in rats by hematoxylin and eosin (H&E) staining at three time points of fetal lung development [Embryo 21 (E21), E19 and E16, and designated as groups S1, S2 and S3, respectively]. An expression profile for fetal lung development was determined using the latest microarray technology. Furthermore, certain differentially expressed miRNAs were selected for further study by real‑time PCR. In total, 202 differentially expressed miRNAs were identified. Among them, miRNA-126* was selected for further study and validated by real-time PCR due to its higher expression levels in the microarrays. The results revealed that the relative expression of miRNA-126* differentially increased as embyronic development increased (P<0.05), which was consistent with the microarray results. In conclusion, we hypothesize that these newly identified miRNAs (including miRNA-126*) may be important in the physiological mechanisms during fetal lung development. These results may aid future studies of neonatal lung development.
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Affiliation(s)
- Yang Yang
- Department of Neonates, Nanjing Children's Hospital of Nanjing Medical University, Nanjing, Jiangsu 210008, PR China.
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Abstract
Recent evidence demonstrates the importance of microRNAs (miRNAs) in several human diseases, including solid and hematological malignancies, diabetes and diseases of the nervous system. However, little is known about the role that miRNAs play in the development and pathogenesis of lung diseases. Murine models of disease suggest that the loss of specific miRNAs is vital to lung development and modulation of the immune system that consequently results in the development of uncontrolled inflammation in the lung. Other studies have found that bacterial challenges also upregulate the expression of specific miRNAs. In this article, we will focus on miRNA involvement in lung development and the possibility that dysregulation and/or reactivation of miRNAs may contribute to lung disease. We will also review the role of miRNAs in the pathogenesis of specific diseases, such as lung cancer, sepsis and smoking-related lung disease.
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Affiliation(s)
- Serge Patrick Nana-Sinkam
- Division of Pulmonary, Allergy, Critical Care and Sleep Medicine, 201 Davis Heart and Lung Research Institute, 473 West 12th Avenue, Ohio State University, Columbus, OH 43210, USA.
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Zhang X, Wang H, Zhang S, Song J, Zhang Y, Wei X, Feng Z. MiR-134 functions as a regulator of cell proliferation, apoptosis, and migration involving lung septation. In Vitro Cell Dev Biol Anim 2012; 48:131-6. [PMID: 22259016 DOI: 10.1007/s11626-012-9482-3] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2011] [Accepted: 01/02/2012] [Indexed: 12/25/2022]
Abstract
MicroRNAs (miRNAs) are 21-25 nt long non-coding RNA that modulate various biological processes, including developmental timing via regulating the expression of their target genes. One critical determinant of normal postnatal lung architecture is septation, and there are many miRNAs involved in the development process. miR-134 is reported as a powerful inducer of pluripotent stem cell differentiation, and we have found that miR-134 is strongly downregulated during mice lung septation (from postnatal Day 2 to postnatal Day 21). Further cell function experiments have revealed that over-expression of miR-134 in A549 and Calu-3 cells can promote cell proliferation and inhibit cell apoptosis and migration abilities in vitro, and the down-expression of miR-134 in cells can act in the opposite way, which indicate that miR-134 is associated with lung septation. This study provides a basis for further investigation of its function in lung development.
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Affiliation(s)
- Xiaoying Zhang
- Department of Pediatrics, BaYi Children's Hospital of The General Military Hospital of Beijing PLA, Dongcheng District, Beijing, People's Republic of China.
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41
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Affiliation(s)
- Wang Faxuan
- Department of Occupational Health, West China School of Public Health, Sichuan University, China
| | - Zhang Qin
- Department of Occupational Health, West China School of Public Health, Sichuan University, China
| | - Zhou Dinglun
- Department of Occupational Health, West China School of Public Health, Sichuan University, China
| | - Zhu Tao
- Department of Prevention medicine, North Sichuan Medical College, China
| | - Ren Xiaohui
- Department of Occupational Health, West China School of Public Health, Sichuan University, China
| | - Zhao Liqiang
- No. 4 West China Teaching Hospital, Sichuan University, China
| | - Lan Yajia
- Department of Occupational Health, West China School of Public Health, Sichuan University, China
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42
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Tian F, Luo J, Zhang H, Chang S, Song J. MiRNA expression signatures induced by Marek's disease virus infection in chickens. Genomics 2011; 99:152-9. [PMID: 22178800 DOI: 10.1016/j.ygeno.2011.11.004] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2011] [Revised: 11/20/2011] [Accepted: 11/28/2011] [Indexed: 10/14/2022]
Abstract
MicroRNAs (miRNAs) are small, non-coding RNAs that regulate gene expression at the post-transcriptional level. Emerging evidence suggests that differential miRNA expression is associated with viral infection and cancer. Marek's disease virus infection induces lymphoma in chickens. However, the host defense response against Marek's disease (MD) progression remains poorly understood. Here, we utilized microarrays to screen miRNAs that were sensitive to Marek's disease virus (MDV) infection. QRT-PCR analysis confirmed the microarray data and revealed expression patterns of some miRNAs in tumor samples. Chicken miRNA gga-miR-15b, which was reduced in infected susceptible chickens and splenic tumors, controlled the expression of ATF2 (activating transcription factor 2). ATF2 was significantly increased in the same group. Our results indicated that differential expression of miRNA in resistant and susceptible chickens was caused by MDV infection, which effectively influenced protein expression of ATF2. This latter result might be related to Marek's disease resistance/susceptibility.
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Affiliation(s)
- Fei Tian
- Department of Animal & Avian Sciences, University of Maryland, College Park, MD 20742, USA
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Abstract
Over the last years, the discovery of microRNAs (miRNAs) has revolutionized the classic concepts of gene expression regulation and has introduced a new group of molecules that may contribute to the complex changes observed during aging. Although several Caenorhabditis elegans miRNAs have been proved to influence the nematode life span, the current knowledge about miRNA-mediated regulation of mammalian aging is still limited. Recently, we have analyzed the functional relevance of miRNAs in accelerate aging by using Zmpste24-/- mice, a murine model that phenocopies Hutchinson-Gilford progeria syndrome. These studies have revealed that the nuclear abnormalities present in these mice affect the expression levels of several miRNAs, including a marked upregulation of miR-1 and miR-29. Furthermore, we have found that the altered expression of these miRNAs may contribute to the progeroid phenotype of mutant mice by modulating the levels of key components of the somatroph axis and DNA damage response pathways. Here, we discuss these recent discoveries and summarize the present evidences regarding the involvement of aging-associated miRNAs or geromiRs in senescence and longevity regulation.
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Affiliation(s)
- Alejandro P Ugalde
- Departamento de Bioquímica y Biología Molecular, Instituto Universitario de Oncología, Universidad de Oviedo, Oviedo, Spain
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Ibáñez-Ventoso C, Driscoll M. MicroRNAs in C. elegans Aging: Molecular Insurance for Robustness? Curr Genomics 2011; 10:144-53. [PMID: 19881908 PMCID: PMC2705848 DOI: 10.2174/138920209788185243] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2009] [Revised: 02/25/2009] [Accepted: 03/13/2009] [Indexed: 11/22/2022] Open
Abstract
The last decade has witnessed a revolution in our appreciation of the extensive regulatory gene expression networks modulated by small untranslated RNAs. microRNAs (miRNAs), ~22 nt RNAs that bind imperfectly to partially homologous sites on target mRNAs to regulate transcript expression, are now known to influence a broad range of biological processes germane to development, homeostatic regulation and disease. It has been proposed that miRNAs ensure biological robustness, and aging has been described as a progressive loss of system and cellular robustness, but relatively little work to date has addressed roles of miRNAs in longevity and healthspan (the period of youthful vigor and disease resistance that precedes debilitating decline in basic functions). The C. elegans model is highly suitable for testing hypotheses regarding miRNA impact on aging biology: the lifespan of the animal is approximately three weeks, there exist a wealth of genetic mutations that alter lifespan through characterized pathways, biomarkers that report strong healthspan have been defined, and many miRNA genes have been identified, expression-profiled, and knocked out. 50/114 C. elegans miRNAs change in abundance during adult life, suggesting significant potential to modulate healthspan and lifespan. Indeed, miRNA lin-4 has been elegantly shown to influence lifespan and healthspan via its lin-14 mRNA target and the insulin signaling pathway. 27 of the C. elegans age-regulated miRNAs have sequence similarity with both fly and human miRNAs. We review current understanding of a field poised to reveal major insights into potentially conserved miRNA-regulated networks that modulate aging.
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Affiliation(s)
- Carolina Ibáñez-Ventoso
- Department of Molecular Biology & Biochemistry, Rutgers, The State University of New Jersey, A232 Nelson Biological Laboratories, 604 Allison Road, Piscataway, New Jersey 08854, USA
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Bergamaschi A, Katzenellenbogen BS. Tamoxifen downregulation of miR-451 increases 14-3-3ζ and promotes breast cancer cell survival and endocrine resistance. Oncogene. 2012;31:39-47. [PMID: 21666713 PMCID: PMC3175015 DOI: 10.1038/onc.2011.223] [Citation(s) in RCA: 152] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Many estrogen receptor (ER)-positive breast cancers respond well initially to endocrine therapies, but often develop resistance during treatment with selective ER modulators (SERMs) such as tamoxifen. We have reported that the 14-3-3 family member and conserved protein, 14-3-3ζ, is upregulated by tamoxifen and that high expression correlated with an early time to disease recurrence. However, the mechanism by which tamoxifen upregulates 14-3-3ζ and may promote the development of endocrine resistance is not known. Our findings herein reveal that the tamoxifen upregulation of 14-3-3ζ results from its ability to rapidly downregulate microRNA (miR)-451 that specifically targets 14-3-3ζ. The levels of 14-3-3ζ and miR-451 were inversely correlated, with 14-3-3ζ being elevated and miR-451 being at a greatly reduced level in tamoxifen-resistant breast cancer cells. Of note, downregulation of miR-451 was selectively elicited by tamoxifen but not by other SERMs, such as raloxifene or ICI182,780 (Fulvestrant). Increasing the level of miR-451 by overexpression, which decreased 14-3-3ζ, suppressed cell proliferation and colony formation, markedly reduced activation of HER2, EGFR and MAPK signaling, increased apoptosis, and, importantly, restored the growth-inhibitory effectiveness of SERMs in endocrine-resistant cells. Opposite effects were elicited by miR-451 knockdown. Thus, we identify tamoxifen downregulation of miR-451, and consequent elevation of the key survival factor 14-3-3ζ, as a mechanistic basis of tamoxifen-associated development of endocrine resistance. These findings suggest that therapeutic approaches to increase expression of this tumor suppressor-like miR should be considered to downregulate 14-3-3ζ and enhance the effectiveness of endocrine therapies. Furthermore, the selective ability of the SERM tamoxifen but not raloxifene to regulate miR-451 and 14-3-3ζ may assist in understanding differences in their activities, as seen in the STAR (Study of Tamoxifen and Raloxifene) breast cancer prevention trial and in other clinical trials.
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Su XW, Yang Y, Lv ML, Li LJ, Dong W, Miao-Liao, Gao LB, Luo HB, Yun-Liu, Cong RJ, Liang WB, Li YB. Association between single-nucleotide polymorphisms in pre-miRNAs and the risk of asthma in a Chinese population. DNA Cell Biol 2011; 30:919-23. [PMID: 21663520 DOI: 10.1089/dna.2010.1164] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Single-nucleotide polymorphisms (SNPs) in pre-miRNAs may alter microRNA (miRNA) expression levels or processing and contribute to susceptibility to a wide range of diseases. We investigated the correlation between four SNPs (rs11614913, rs3746444, rs2910164, and rs229283) in pre-miRNAs and the risk of asthma in 220 asthma patients and 540 controls using polymerase chain reaction-restriction fragment length polymorphism methodology and DNA-sequencing. There were significant differences in the genotype and allelic distribution of rs2910164G/C and rs2292832C/T polymorphisms among cases and controls. The CC genotype and C allele of rs2910164G/C were significantly associated with a decreased risk of asthma (CC vs. GG, odds ratio [OR] = 0.51, 95% confidence interval [CI]: 0.31-0.82; C vs. G, OR = 0.74, 95% CI: 0.59-0.93). Similarly, the TT genotype and T allele of rs2292832C/T were significantly associated with a decreased risk of asthma (TT vs. CC, OR = 0.56, 95% CI: 0.33-0.95; T vs. C, OR = 0.71, 95% CI: 0.53-0.95). However, no significant association between the other two polymorphisms (i.e., rs11614913C/T and rs3746444C/T) and the risk of asthma was observed. Our data indicate that rs2910164G/C and rs2292832C/T may play a role in the development of asthma.
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Affiliation(s)
- Xiao-Wei Su
- Department of Forensic Biology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan, China
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Li LJ, Gao LB, Lv ML, Dong W, Su XW, Liang WB, Zhang L. Association between SNPs in pre-miRNA and risk of chronic obstructive pulmonary disease. Clin Biochem 2011; 44:813-6. [PMID: 21565178 DOI: 10.1016/j.clinbiochem.2011.04.021] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2011] [Revised: 04/19/2011] [Accepted: 04/24/2011] [Indexed: 01/07/2023]
Abstract
OBJECTIVES Chronic obstructive pulmonary disease (COPD) is characterized by irreversible airway obstruction and persistent chronic airway inflammation and is influenced by genetic and environmental factors. This study aimed to explore the genetic aspect of its initial occurrence. DESIGN AND METHODS We conducted a case-control study of 432 COPD patients and 511 control subjects frequency-matched in age and gender distribution. We genotyped three single nucleotide polymorphisms (SNPs) in pre-miRNAs using a PCR-RFLP assay and evaluated their relevance to COPD susceptibility. RESULTS We found that the TT genotype and T allele of miR-196a2 rs11614913 were significantly associated with a decreased risk for COPD, compared with the CC genotype and C allele. Similarly, the GG genotype and G allele of miR-499 rs3746444 were associated with a decreased risk for COPD, compared with the AA genotype and A allele. CONCLUSIONS These findings suggest that both rs11614913 and rs3746444 may be involved in susceptibility to COPD.
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Affiliation(s)
- Li-Juan Li
- Department of Forensic Biology, West China School of Preclinical and Forensic Medicine, Sichuan University, Chengdu, Sichuan 610041, P.R. China
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Ugalde AP, Ramsay AJ, de la Rosa J, Varela I, Mariño G, Cadiñanos J, Lu J, Freije JM, López-Otín C. Aging and chronic DNA damage response activate a regulatory pathway involving miR-29 and p53. EMBO J 2011; 30:2219-32. [PMID: 21522133 DOI: 10.1038/emboj.2011.124] [Citation(s) in RCA: 193] [Impact Index Per Article: 14.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2010] [Accepted: 03/30/2011] [Indexed: 12/23/2022] Open
Abstract
Aging is a multifactorial process that affects most of the biological functions of the organism and increases susceptibility to disease and death. Recent studies with animal models of accelerated aging have unveiled some mechanisms that also operate in physiological aging. However, little is known about the role of microRNAs (miRNAs) in this process. To address this question, we have analysed miRNA levels in Zmpste24-deficient mice, a model of Hutchinson-Gilford progeria syndrome. We have found that expression of the miR-29 family of miRNAs is markedly upregulated in Zmpste24(-/-) progeroid mice as well as during normal aging in mouse. Functional analysis revealed that this transcriptional activation of miR-29 is triggered in response to DNA damage and occurs in a p53-dependent manner since p53(-/-) murine fibroblasts do not increase miR-29 expression upon doxorubicin treatment. We have also found that miR-29 represses Ppm1d phosphatase, which in turn enhances p53 activity. Based on these results, we propose the existence of a novel regulatory circuitry involving miR-29, Ppm1d and p53, which is activated in aging and in response to DNA damage.
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Arefian E, Kiani J, Soleimani M, Shariati SAM, Aghaee-Bakhtiari SH, Atashi A, Gheisari Y, Ahmadbeigi N, Banaei-Moghaddam AM, Naderi M, Namvarasl N, Good L, Faridani OR. Analysis of microRNA signatures using size-coded ligation-mediated PCR. Nucleic Acids Res 2011; 39:e80. [PMID: 21486750 PMCID: PMC3130289 DOI: 10.1093/nar/gkr214] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The expression pattern and regulatory functions of microRNAs (miRNAs) are intensively investigated in various tissues, cell types and disorders. Differential miRNA expression signatures have been revealed in healthy and unhealthy tissues using high-throughput profiling methods. For further analyses of miRNA signatures in biological samples, we describe here a simple and efficient method to detect multiple miRNAs simultaneously in total RNA. The size-coded ligation-mediated polymerase chain reaction (SL-PCR) method is based on size-coded DNA probe hybridization in solution, followed-by ligation, PCR amplification and gel fractionation. The new method shows quantitative and specific detection of miRNAs. We profiled miRNAs of the let-7 family in a number of organisms, tissues and cell types and the results correspond with their incidence in the genome and reported expression levels. Finally, SL-PCR detected let-7 expression changes in human embryonic stem cells as they differentiate to neuron and also in young and aged mice brain and bone marrow. We conclude that the method can efficiently reveal miRNA signatures in a range of biological samples.
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Affiliation(s)
- Ehsan Arefian
- Department of Molecular Biology and Genetic Engineering, Stem Cell Technology Research Center, Tehran 1585636473, Iran
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Wang R, Wang ZX, Yang JS, Pan X, De W, Chen LB. MicroRNA-451 functions as a tumor suppressor in human non-small cell lung cancer by targeting ras-related protein 14 (RAB14). Oncogene 2011; 30:2644-58. [PMID: 21358675 DOI: 10.1038/onc.2010.642] [Citation(s) in RCA: 245] [Impact Index Per Article: 18.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Accumulating evidence suggests that microRNAs (miRNAs) are important gene regulators, which can have critical roles in diverse biological processes including tumorigenesis. In this study, we analyzed the miRNA expression profiles in non-small cell lung carcinoma (NSCLC) by use of a miRNA microarray platform and identified 40 differentially expressed miRNAs. We showed that miRNA (miR)-451 was the most downregulated in NSCLC tissues. The expression level of miR-451 was found to be significantly correlated with tumor differentiation, pathological stage and lymph-node metastasis. Moreover, low miR-451 expression level was also correlated with shorter overall survival of NSCLC patients (P<0.001). Ectopic miR-451 expression significantly suppressed the in vitro proliferation and colony formation of NSCLC cells and the development of tumors in nude mice by enhancing apoptosis, which might be associated with inactivation of Akt signaling pathway. Interestingly, ectopic miR-451 expression could significantly inhibit RAB14 protein expression and decrease a luciferase-reporter activity containing the RAB14 3'-untranslated region (UTR). In addition,, RNA interference silencing of RAB14 gene could recapitulate the tumor suppressor function of miR-451, whereas restoration of RAB14 expression could partially attenuate the tumor suppressor function of miR-451 in NSCLC cells. Furthermore, we also showed that strong positive immunoreactivity of RAB14 protein was significantly associated with downregulation of miR-451 (P=0.01). These findings suggest that miR-451 regulates survival of NSCLC cells partially through the downregulation of RAB14. Therefore, targeting with the miR-451/RAB14 interaction might serve as a novel therapeutic application to treat NSCLC patients.
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Affiliation(s)
- R Wang
- Department of Medical Oncology, Jinling Hospital, School of Medicine, Nanjing University, Nanjing, Jiangsu, PR China
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