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Ancer-Rodríguez J, Gopar-Cuevas Y, García-Aguilar K, Chávez-Briones MDL, Miranda-Maldonado I, Ancer-Arellano A, Ortega-Martínez M, Jaramillo-Rangel G. Cell Proliferation and Apoptosis-Key Players in the Lung Aging Process. Int J Mol Sci 2024; 25:7867. [PMID: 39063108 PMCID: PMC11276691 DOI: 10.3390/ijms25147867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2024] [Revised: 07/12/2024] [Accepted: 07/15/2024] [Indexed: 07/28/2024] Open
Abstract
Currently, the global lifespan has increased, resulting in a higher proportion of the population over 65 years. Changes that occur in the lung during aging increase the risk of developing acute and chronic lung diseases, such as acute respiratory distress syndrome, chronic obstructive pulmonary disease, idiopathic pulmonary fibrosis, and lung cancer. During normal tissue homeostasis, cell proliferation and apoptosis create a dynamic balance that constitutes the physiological cell turnover. In basal conditions, the lungs have a low rate of cell turnover compared to other organs. During aging, changes in the rate of cell turnover in the lung are observed. In this work, we review the literature that evaluates the role of molecules involved in cell proliferation and apoptosis in lung aging and in the development of age-related lung diseases. The list of molecules that regulate cell proliferation, apoptosis, or both processes in lung aging includes TNC, FOXM1, DNA-PKcs, MicroRNAs, BCL-W, BCL-XL, TCF21, p16, NOX4, NRF2, MDM4, RPIA, DHEA, and MMP28. However, despite the studies carried out to date, the complete signaling pathways that regulate cell turnover in lung aging are still unknown. More research is needed to understand the changes that lead to the development of age-related lung diseases.
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Affiliation(s)
| | | | | | | | | | | | | | - Gilberto Jaramillo-Rangel
- Department of Pathology, School of Medicine, Autonomous University of Nuevo León, Monterrey 64460, Mexico; (J.A.-R.); (Y.G.-C.); (M.-d.-L.C.-B.); (I.M.-M.); (A.A.-A.); (M.O.-M.)
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2
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Ortiz C, Tahiri H, Yang C, Gilbert C, Fortin C, Hardy P. The microRNA Let-7f Induces Senescence and Exacerbates Oxidative Stress in Retinal Pigment Epithelial Cells. Antioxidants (Basel) 2024; 13:646. [PMID: 38929085 PMCID: PMC11200580 DOI: 10.3390/antiox13060646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2024] [Revised: 05/18/2024] [Accepted: 05/23/2024] [Indexed: 06/28/2024] Open
Abstract
This study aims to investigate the role of microRNA let-7f in the dysfunction and degeneration of retinal pigment epithelium (RPE) cells through the induction of senescence and oxidative stress. Furthermore, we explore whether let-7f inhibition can protect these cells against sodium iodate (SI)-induced oxidative stress. Oxidative stress and let-7f expression are reciprocally regulated in retinal pigment epithelial cells. Overexpression of let-7f in ARPE-19 cells induced oxidative stress as demonstrated by increased reactive oxygen species (ROS) production as well as senescence. Inhibition of let-7f successfully protected RPE cells from the detrimental effects induced by SI. In addition, let-7f overexpression induced RPE cellular dysfunction by diminishing their migratory capabilities and reducing the phagocytosis of porcine photoreceptor outer segments (POS). Results were further confirmed in vivo by intravitreal injections of SI and let-7f antagomir in C57BL/6 mice. Our results provide strong evidence that let-7f is implicated in the dysfunction of RPE cells through the induction of senescence and oxidative injury. These findings may help to uncover novel and relevant processes in the pathogenesis of dry AMD.
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Affiliation(s)
- Christina Ortiz
- Departments of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada;
| | - Houda Tahiri
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T 1C5, Canada; (H.T.); (C.Y.); (C.G.); (C.F.)
| | - Chun Yang
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T 1C5, Canada; (H.T.); (C.Y.); (C.G.); (C.F.)
| | - Claudia Gilbert
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T 1C5, Canada; (H.T.); (C.Y.); (C.G.); (C.F.)
| | - Carl Fortin
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T 1C5, Canada; (H.T.); (C.Y.); (C.G.); (C.F.)
| | - Pierre Hardy
- Departments of Pharmacology and Physiology, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada;
- CHU Sainte-Justine Research Center, Université de Montréal, Montréal, QC H3T 1C5, Canada; (H.T.); (C.Y.); (C.G.); (C.F.)
- Department of Pediatrics, Faculty of Medicine, Université de Montréal, Montréal, QC H3T 1J4, Canada
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3
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Ibragimova M, Kussainova A, Aripova A, Bersimbaev R, Bulgakova O. The Molecular Mechanisms in Senescent Cells Induced by Natural Aging and Ionizing Radiation. Cells 2024; 13:550. [PMID: 38534394 DOI: 10.3390/cells13060550] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2024] [Revised: 03/17/2024] [Accepted: 03/19/2024] [Indexed: 03/28/2024] Open
Abstract
This review discusses the relationship between cellular senescence and radiation exposure. Given the wide range of ionizing radiation sources encountered by people in professional and medical spheres, as well as the influence of natural background radiation, the question of the effect of radiation on biological processes, particularly on aging processes, remains highly relevant. The parallel relationship between natural and radiation-induced cellular senescence reveals the common aspects underlying these processes. Based on recent scientific data, the key points of the effects of ionizing radiation on cellular processes associated with aging, such as genome instability, mitochondrial dysfunction, altered expression of miRNAs, epigenetic profile, and manifestation of the senescence-associated secretory phenotype (SASP), are discussed. Unraveling the molecular mechanisms of cellular senescence can make a valuable contribution to the understanding of the molecular genetic basis of age-associated diseases in the context of environmental exposure.
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Affiliation(s)
- Milana Ibragimova
- Department of General Biology and Genomics, Institute of Cell Biology and Biotechnology, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Assiya Kussainova
- Department of General Biology and Genomics, Institute of Cell Biology and Biotechnology, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
- Department of Health Sciences, University of Genova, Via Pastore 1, 16132 Genoa, Italy
| | - Akmaral Aripova
- Department of General Biology and Genomics, Institute of Cell Biology and Biotechnology, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Rakhmetkazhi Bersimbaev
- Department of General Biology and Genomics, Institute of Cell Biology and Biotechnology, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
| | - Olga Bulgakova
- Department of General Biology and Genomics, Institute of Cell Biology and Biotechnology, L.N. Gumilyov Eurasian National University, Astana 010008, Kazakhstan
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4
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Jo HR, Hwang J, Jeong JH. MicroRNA miR-214-5p induces senescence of microvascular endothelial cells by targeting the JAG1/Notch signaling pathway. Noncoding RNA Res 2023; 8:385-391. [PMID: 37260583 PMCID: PMC10227379 DOI: 10.1016/j.ncrna.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/10/2023] [Accepted: 05/01/2023] [Indexed: 06/02/2023] Open
Abstract
During cellular senescence, irreversible cell cycle arrest is accompanied by morphological and genetic alterations. MicroRNAs (miRNAs) play a critical role in regulating senescence by modulating the abundance of crucial senescence regulatory proteins. Therefore, to identify novel senescence-associated miRNAs, we analyzed differentially expressed miRNAs in microvascular endothelial cells (MVEC). Among the 80 differentially expressed miRNAs in replicative senescent MVECs, 16 miRNAs of unknown gene ontology were used in the senescence-associated β-galactosidase assay. Thus, we identified miR-214-5p as having high senescence-inducing activity, inhibiting the proliferation and angiogenesis activity of MVECs. To reveal the senescence-regulating mechanism of miR-214-5p, we searched for target genes through sequence- and literature-based analysis. Molecular manipulation of miR-214-5p demonstrated that miR-214-5p regulated the expression and function of Jagged 1 (JAG1) in senescent MVECs. Silencing JAG1 or downstream genes of JAG1-Notch signaling, accelerated the senescence of MVECs. Additionally, ectopic overexpression of JAG1 reversed the senescence-inducing activity of miR-214-5p. In conclusion, we identified miR-214-5p as a senescence-associated miRNA. Targeting miR-214-5p may be a potential strategy to delay vascular aging and overcome the detrimental effects of senescence and age-related diseases.
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Affiliation(s)
- Hye-ram Jo
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Science, Seoul, 01812, South Korea
- Radiological and Medico-Oncological Sciences, University of Science and Technology, Daejeon, 34113, South Korea
| | - Jiwon Hwang
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Science, Seoul, 01812, South Korea
- Department of Life Sciences, Korea University, Seoul, 02841, South Korea
| | - Jae-Hoon Jeong
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Science, Seoul, 01812, South Korea
- Radiological and Medico-Oncological Sciences, University of Science and Technology, Daejeon, 34113, South Korea
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5
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Ryu IS, Kim DH, Cho HJ, Ryu JH. The role of microRNA-485 in neurodegenerative diseases. Rev Neurosci 2023; 34:49-62. [PMID: 35793556 DOI: 10.1515/revneuro-2022-0039] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 05/19/2022] [Indexed: 01/11/2023]
Abstract
Neurodegenerative diseases (NDDs) are age-related disorders characterized by progressive neurodegeneration and neuronal cell loss in the central nervous system. Neuropathological conditions such as the accumulation of misfolded proteins can cause neuroinflammation, apoptosis, and synaptic dysfunction in the brain, leading to the development of NDDs including Alzheimer's disease (AD) and Parkinson's disease (PD). MicroRNAs (miRNAs) are small noncoding RNA molecules that regulate gene expression post-transcriptionally via RNA interference. Recently, some studies have reported that some miRNAs play an important role in the development of NDDs by regulating target gene expression. MiRNA-485 (miR-485) is a highly conserved brain-enriched miRNA. Accumulating clinical reports suggest that dysregulated miR-485 may be involved in the pathogenesis of AD and PD. Emerging studies have also shown that miR-485 plays a novel role in the regulation of neuroinflammation, apoptosis, and synaptic function in the pathogenesis of NDDs. In this review, we introduce the biological characteristics of miR-485, provide clinical evidence of the dysregulated miR-485 in NDDs, novel roles of miR-485 in neuropathological events, and discuss the potential of targeting miR-485 as a diagnostic and therapeutic marker for NDDs.
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Affiliation(s)
- In Soo Ryu
- Biorchestra Co. Ltd., 17, Techno 4-ro, Yuseong-gu, Daejeon 34013, South Korea
| | - Dae Hoon Kim
- Biorchestra Co. Ltd., 17, Techno 4-ro, Yuseong-gu, Daejeon 34013, South Korea
| | - Hyun-Jeong Cho
- Department of Biomedical Laboratory Science, College of Medical Science, Konyang University, 158, Gwanjeodong-ro, Seo-gu, Daejeon 35365, South Korea
| | - Jin-Hyeob Ryu
- Biorchestra Co. Ltd., 17, Techno 4-ro, Yuseong-gu, Daejeon 34013, South Korea.,Biorchestra Co. Ltd., 245 Main St, Cambridge, MA 02142, USA
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Zhang Y, Tang Y, Liu Y, Wang J, Shen Y, Sun X, Kang M, Zhao M, Chen Q. The Autocrine Role of Placental Extracellular Vesicles from Missed Miscarriage in Causing Senescence: Possible Pathogenesis of Missed Miscarriage. Cells 2022; 11:cells11233873. [PMID: 36497129 PMCID: PMC9740889 DOI: 10.3390/cells11233873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2022] [Accepted: 11/24/2022] [Indexed: 12/03/2022] Open
Abstract
Placental dysfunction, including senescent changes, is associated with the pathogenesis of missed miscarriage, although the underlying mechanism is unclear. Increasing evidence indicates that placenta-specific miRNAs are packaged in extracellular vesicles (EVs) from placental syncytiotrophoblasts and are released into the maternal circulation. Aberrant cargos including miRNAs in placental EVs have been reported to be associated with the pathogenesis of complicated pregnancies. In this study, we compared the miRNA profiles in EVs derived from missed miscarriage and healthy placentae and investigated possible biological pathways which may be involved in senescence, one cause of missed miscarriage. The total concentration of RNA in placental EVs was not different between the two groups. However, there were 54 and 94 differentially expressed miRNAs in placental large and small EVs from missed miscarriage compared to EVs from healthy controls. The aberrantly expressed miRNAs seen in placental EVs were also observed in missed miscarriage placentae. Gene enrichment analysis showed that some of those differentially expressed miRNAs are involved in cellular senescence, endocytosis, cell cycle and endocrine resistance. Furthermore, transfection of trophoblasts by a single senescence-associated miRNA that was differentially expressed in placental EVs derived from missed miscarriage did not cause trophoblast dysfunction. In contrast, EVs derived from missed miscarriage placenta induced senescent changes in the healthy placenta. Our data suggested that a complex of placental EVs, rather than a few differentially expressed miRNAs in placental EVs derived from missed miscarriage placentae could contribute in an autocrine manner to placental senescence, one of the causes of missed miscarriage.
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Affiliation(s)
- Yi Zhang
- Department of Obstetrics & Gynaecology, The University of Auckland, Auckland 1141, New Zealand
| | - Yunhui Tang
- Department of Family Planning, The Hospital of Obstetrics & Gynaecology, Fudan University, Shanghai 200082, China
- Correspondence:
| | - Yang Liu
- Department of Obstetrics & Gynaecology, The University of Auckland, Auckland 1141, New Zealand
| | - Jiayi Wang
- Department of Pathology, Wuxi No. 2 People’s Hospital, Nanjing Medical University, Wuxi 214002, China
| | - Ye Shen
- Department of Family Planning, Wuxi Maternity and Child Health Hospital Affiliated Nanjing Medical University, Wuxi 214002, China
| | - Xinyi Sun
- Department of Obstetrics & Gynaecology, The University of Auckland, Auckland 1141, New Zealand
| | - Matthew Kang
- Department of Obstetrics & Gynaecology, The University of Auckland, Auckland 1141, New Zealand
| | - Min Zhao
- Department of Gynaecological Cancer, Wuxi Maternity and Child Health Hospital Affiliated Nanjing Medical University, Wuxi 214002, China
| | - Qi Chen
- Department of Obstetrics & Gynaecology, The University of Auckland, Auckland 1141, New Zealand
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7
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MicroRNAs, Long Non-Coding RNAs, and Circular RNAs in the Redox Control of Cell Senescence. Antioxidants (Basel) 2022; 11:antiox11030480. [PMID: 35326131 PMCID: PMC8944605 DOI: 10.3390/antiox11030480] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Revised: 02/21/2022] [Accepted: 02/24/2022] [Indexed: 12/18/2022] Open
Abstract
Cell senescence is critical in diverse aspects of organism life. It is involved in tissue development and homeostasis, as well as in tumor suppression. Consequently, it is tightly integrated with basic physiological processes during life. On the other hand, senescence is gradually being considered as a major contributor of organismal aging and age-related diseases. Increased oxidative stress is one of the main risk factors for cellular damages, and thus a driver of senescence. In fact, there is an intimate link between cell senescence and response to different types of cellular stress. Oxidative stress occurs when the production of reactive oxygen species/reactive nitrogen species (ROS/RNS) is not adequately detoxified by the antioxidant defense systems. Non-coding RNAs are endogenous transcripts that govern gene regulatory networks, thus impacting both physiological and pathological events. Among these molecules, microRNAs, long non-coding RNAs, and more recently circular RNAs are considered crucial mediators of almost all cellular processes, including those implicated in oxidative stress responses. Here, we will describe recent data on the link between ROS/RNS-induced senescence and the current knowledge on the role of non-coding RNAs in the senescence program.
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8
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Sayed KM, G Abd Elhaliem N, A Mohammed S, Alsmman AH. Histopathology, matrix metalloproteinase-2 and alpha smooth muscle actin expression in Tenon's capsule of eyes with congenital glaucoma. Eur J Ophthalmol 2021; 32:316-321. [PMID: 34766520 DOI: 10.1177/11206721211058995] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
PURPOSE To evaluate the ultrastructural features of collagen fibrils, matrix metalloproteinase (MMP) and alpha-smooth muscle actin (α-SMA) expression in the Tenon's capsule of buphthalmic eyes. METHODS A prospective comparative case series study was conducted on 35 buphthalmic eyes vs 25 control eyes. Children with congenital glaucoma (CG) who underwent a combined trabeculectomy-trabeculotomy procedure with mitomycin C (CTTM); the Tenon's capsule was obtained during the surgical procedure. The control group included children with strabismus, the Tenon's capsule was obtained in the course of strabismus surgery. Both H&E and Masson's trichrome staining were done. The Metalloprotenease-2 (MMP-2), alpha smooth muscle actin (α-SMA) immunohistochemical staining was performed. RESULTS Mean collagen percentage area by Masson trichrome stain in Tenons capsule was significantly higher in buphthalmic eyes (54.76% ± 0.32 vs 33.71% ± 1.4; P < 0.001).The percentage area of αSMA expression in Tenons capsule was significantly higher in buphthalmic eyes (4.93% ± 0.7 vs 2.00% ± 0.5; P < 0.001). However, MMP2 expression in Tenons capsule of the buphthalmic group was significantly lower than that of the control group (12.88% ± 2.95 vs 27.91% ± 0.2 respectively) P = 0.02. CONCLUSIONS Tenon capsule of buphthalmic eyes have their own histopathological features and properties making them more liable for fibrosis with high rate of failure following antiglaucoma surgeries. Such detailed information has not been published before which may aid in the identification of new antifibrotic therapies in management of glaucoma.
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Henderson J, Dubey PK, Patil M, Singh S, Dubey S, Namakkal Soorappan R, Kannappan R, Sethu P, Qin G, Zhang J, Krishnamurthy P. microRNA-377 Signaling Modulates Anticancer Drug-Induced Cardiotoxicity in Mice. Front Cardiovasc Med 2021; 8:737826. [PMID: 34485421 PMCID: PMC8415717 DOI: 10.3389/fcvm.2021.737826] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2021] [Accepted: 07/26/2021] [Indexed: 11/13/2022] Open
Abstract
Doxorubicin (DOX, an anthracycline) is a widely used chemotherapy agent against various forms of cancer; however, it is also known to induce dose-dependent cardiotoxicity leading to adverse complications. Investigating the underlying molecular mechanisms and strategies to limit DOX-induced cardiotoxicity might have potential clinical implications. Our previous study has shown that expression of microRNA-377 (miR-377) increases in cardiomyocytes (CMs) after cardiac ischemia-reperfusion injury in mice, but its specific role in DOX-induced cardiotoxicity has not been elucidated. In the present study, we investigated the effect of anti-miR-377 on DOX-induced cardiac cell death, remodeling, and dysfunction. We evaluated the role of miR-377 in CM apoptosis, its target analysis by RNA sequencing, and we tested the effect of AAV9-anti-miR-377 on DOX-induced cardiotoxicity and mortality. DOX administration in mice increases miR-377 expression in the myocardium. miR-377 inhibition in cardiomyocyte cell line protects against DOX-induced cell death and oxidative stress. Furthermore, RNA sequencing and Gene Ontology (GO) analysis revealed alterations in a number of cell death/survival genes. Intriguingly, we observed accelerated mortality and enhanced myocardial remodeling in the mice pretreated with AAV9-anti-miR-377 followed by DOX administration as compared to the AAV9-scrambled-control-pretreated mice. Taken together, our data suggest that in vitro miR-377 inhibition protects against DOX-induced cardiomyocyte cell death. On the contrary, in vivo administration of AAV9-anti-miR-377 increases mortality in DOX-treated mice.
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Affiliation(s)
- John Henderson
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Praveen K Dubey
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Mallikarjun Patil
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Sarojini Singh
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Shubham Dubey
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Rajasekaran Namakkal Soorappan
- Division of Molecular & Cellular Pathology, Department of Pathology, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Ramaswamy Kannappan
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Palaniappan Sethu
- Division of Cardiovascular Disease, School of Medicine, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Gangjian Qin
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Jianyi Zhang
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, Birmingham, AL, United States
| | - Prasanna Krishnamurthy
- Department of Biomedical Engineering, Schools of Medicine and Engineering, University of Alabama at Birmingham, Birmingham, AL, United States
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Tufekci KU, Alural B, Tarakcioglu E, San T, Genc S. Lithium inhibits oxidative stress-induced neuronal senescence through miR-34a. Mol Biol Rep 2021; 48:4171-4180. [PMID: 34052966 DOI: 10.1007/s11033-021-06430-w] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2021] [Accepted: 05/21/2021] [Indexed: 12/12/2022]
Abstract
Neuronal senescence, triggered by telomere shortening, oncogene activation, DNA damage, or oxidative stress, has been associated with neurodegenerative diseases' pathogenesis. Therefore, preventing neuronal senescence could be a novel treatment strategy for neurodegenerative diseases. Lithium (Li), the first-line treatment against bipolar disorder, has been shown to have neuroprotective effects in clinical, pre-clinical, and in vitro studies. Li can protect cells from senescence, and its effect on neuronal senescence was investigated in our study. Furthermore, we also investigated the effects of Li on the senescence-associated miR-34a/Sirt1/p53 pathway. In this study, hydrogen peroxide was used as an inducer for the "stress-induced premature senescence" model. In the senescence model, we have assessed Li's effects on senescence by analyzing β-galactosidase activity, Sudan Black B, and senescence-associated heterochromatin foci (SAHF) stainings, and on cell cycle arrest by BrdU staining. Furthermore, expression levels of senescence and cell cycle arrest-related proteins (p53, p21, p16INK4a, and SIRT1) by western blotting. Finally, the effects of Li on senescence-associated miR-34a levels were measured by quantitative PCR. We show via Sudan Black B staining, β-Gal activity assay, and by detecting SAHF, Li protects against senescence in neuronal cells. Then, Li's effect on signaling has also been determined on pathways involved in senescence and cell cycle arrest. Moreover, we have observed that Li has a modulatory effect on miR-34a expression. Therefore, we posit that Li suppresses senescence in neuronal cells and that this effect is mediated through miR-34a/Sirt1/p53 axis.
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Affiliation(s)
- Kemal Ugur Tufekci
- Department of Healthcare Sevices, Vocational School of Health Services, Izmir Democracy University, 35290, Izmir, Turkey
| | - Begum Alural
- Department of Neuroscience, Institute of Health Sciences, Dokuz Eylül University, Izmir, Turkey
| | - Emre Tarakcioglu
- Izmir Biomedicine and Genome Center, Balcova, 35330, Izmir, Turkey.,İzmir International Biomedicine and Genome Institute, Dokuz Eylül University, Izmir, Turkey
| | - Tugba San
- Department of Neuroscience, Institute of Health Sciences, Dokuz Eylül University, Izmir, Turkey
| | - Sermin Genc
- Izmir Biomedicine and Genome Center, Balcova, 35330, Izmir, Turkey. .,Department of Neuroscience, Institute of Health Sciences, Dokuz Eylül University, Izmir, Turkey. .,İzmir International Biomedicine and Genome Institute, Dokuz Eylül University, Izmir, Turkey.
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11
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Zhu H, Sun B, Zhu L, Zou G, Shen Q. N6-Methyladenosine Induced miR-34a-5p Promotes TNF-α-Induced Nucleus Pulposus Cell Senescence by Targeting SIRT1. Front Cell Dev Biol 2021; 9:642437. [PMID: 33763423 PMCID: PMC7982913 DOI: 10.3389/fcell.2021.642437] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 02/15/2021] [Indexed: 12/14/2022] Open
Abstract
Low back pain is tightly associated with intervertebral disc degeneration (IVDD) and aberrant nucleus pulposus (NP) is a critical cause. miRNAs N6-methyladenosine (m6A) modification accounts for the TNF-α-induced senescence of NP cells. The aim of this study was to investigate whether m6A modification regulates TNF-α-mediated cell viability, cell cycle arrest, and cell senescence and how it works. The results showed that METTL14 expression positively correlated with m6A and TNF-α expression in HNPCs. The knockdown of METTL14 led to the inhibition of the TNF-α-induced cell senescence. METTL14 overexpression promoted cell senescence. METTL14 regulated the m6A modification of miR-34a-5p and interacted with DGCR8 to process miR-34a-5p. The miR-34a-5p inhibitor inhibited the cell cycle senescence of HNPCs. miR-34a-5p was predicted to interact with the SIRT1 mRNA. SIRT1 overexpression counteracted the miR-34a-5p-promoted cell senescence. METTL14 participates in the TNF-α-induced m6A modification of miR-34a-5p to promote cell senescence in HNPCs and NP cells of IVDD patients. Downregulation of either METTL14 expression or miR-34a-5p leads to the inhibition of cell cycle arrest and senescence. SIRT1 mRNA is an effective binding target of miR-34a-5p, and SIRT1 overexpression mitigates the cell cycle arrest and senescence caused by miR-34a-5p.
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Affiliation(s)
- Hao Zhu
- Department of Orthopaedics, The Affiliated Shanghai General Hospital of Nanjing Medical University, Shanghai, China.,Department of Orthopaedics, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School, Yancheng, China
| | - Bao Sun
- Department of Orthopaedics, The Affiliated Shanghai General Hospital of Nanjing Medical University, Shanghai, China
| | - Liang Zhu
- Department of Orthopaedics, The Affiliated Shanghai General Hospital of Nanjing Medical University, Shanghai, China
| | - Guoyou Zou
- Department of Orthopaedics, Yancheng First Hospital, Affiliated Hospital of Nanjing University Medical School, Yancheng, China
| | - Qiang Shen
- Department of Orthopaedics, The Affiliated Shanghai General Hospital of Nanjing Medical University, Shanghai, China
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12
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MicroRNAs Regulating Autophagy in Neurodegeneration. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2021; 1208:191-264. [PMID: 34260028 DOI: 10.1007/978-981-16-2830-6_11] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Social and economic impacts of neurodegenerative diseases (NDs) become more prominent in our constantly aging population. Currently, due to the lack of knowledge about the aetiology of most NDs, only symptomatic treatment is available for patients. Hence, researchers and clinicians are in need of solid studies on pathological mechanisms of NDs. Autophagy promotes degradation of pathogenic proteins in NDs, while microRNAs post-transcriptionally regulate multiple signalling networks including autophagy. This chapter will critically discuss current research advancements in the area of microRNAs regulating autophagy in NDs. Moreover, we will introduce basic strategies and techniques used in microRNA research. Delineation of the mechanisms contributing to NDs will result in development of better approaches for their early diagnosis and effective treatment.
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Ohlstrom D, Hernandez-Lagunas L, Garcia AM, Allawzi A, Karimpour-Fard A, Sucharov CC, Nozik-Grayck E. MicroRNA regulation postbleomycin due to the R213G extracellular superoxide dismutase variant is predicted to suppress inflammatory and immune pathways. Physiol Genomics 2020; 52:245-254. [PMID: 32421439 DOI: 10.1152/physiolgenomics.00116.2019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Oxidative stress is a key contributor to the development of dysregulated inflammation in acute lung injury (ALI). A naturally occurring single nucleotide polymorphism in the key extracellular antioxidant enzyme, extracellular superoxide dismutase (EC-SOD), results in an arginine to glycine substitution (R213G) that promotes resolution of inflammation and protection against bleomycin-induced ALI. Previously we found that mice harboring the R213G mutation in EC-SOD exhibit a transcriptomic profile consistent with a striking suppression of inflammatory and immune pathways 7 days postbleomycin. However, the alterations in noncoding regulatory RNAs in wild-type (WT) and R213G EC-SOD lungs have not been examined. Therefore, we used next-generation microRNA (miR) Sequencing of lung tissue to identify dysregulated miRs 7 days after bleomycin in WT and R213G mice. Differential expression analysis identified 92 WT and 235 R213G miRs uniquely dysregulated in their respective genotypes. Subsequent pathway analysis identified that these miRs were predicted to regulate approximately half of the differentially expressed genes previously identified. The gene targets of these altered miRs indicate suppression of immune and inflammatory pathways in the R213G mice versus activation of these pathways in WT mice. Triggering receptor expressed on myeloid cells 1 (TREM1) signaling was identified as the inflammatory pathway with the most striking difference between WT and R213G lungs. miR-486b-3p was identified as the most dysregulated miR predicted to regulate the TREM1 pathway. We validated the increase in TREM1 signaling using miR-486b-3p antagomir transfection. These findings indicate that differential miR regulation is predicted to regulate the inflammatory gene profile, contributing to the protection against ALI in R213G mice.
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Affiliation(s)
- Denis Ohlstrom
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, C Colorado
| | - Laura Hernandez-Lagunas
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, C Colorado
| | - Anastacia M Garcia
- Department of Pediatrics, Division of Cardiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Ayed Allawzi
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, C Colorado
| | - Anis Karimpour-Fard
- Department of Pharmacology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Carmen C Sucharov
- Department of Pediatrics, Division of Cardiology, University of Colorado, Anschutz Medical Campus, Aurora, Colorado
| | - Eva Nozik-Grayck
- Developmental Lung Biology and Cardiovascular Pulmonary Research Laboratories, Departments of Pediatrics and Medicine, University of Colorado, Anschutz Medical Campus, Aurora, C Colorado
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Ebrahimi SO, Reiisi S, Shareef S. miRNAs, oxidative stress, and cancer: A comprehensive and updated review. J Cell Physiol 2020; 235:8812-8825. [PMID: 32394436 DOI: 10.1002/jcp.29724] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Accepted: 04/07/2020] [Indexed: 01/17/2023]
Abstract
Oxidative stress refers to elevated levels of intracellular reactive oxygen species (ROS). ROS homeostasis functions as a signaling pathway for normal cell survival and appropriate cell signaling. Chronic inflammation induced by imbalanced levels of ROS contributes to many diseases and different types of cancer. ROS can alter the expression of oncogenes and tumor suppressor genes through epigenetic modifications, transcription factors, and non-coding RNAs. MicroRNAs (miRNAs) are small non-coding RNAs that play a key role in most biological pathways. Each miRNA regulates hundreds of target genes by inhibiting protein translation and/or promoting messenger RNA degradation. In normal conditions, miRNAs play a physiological role in cell proliferation, differentiation, and apoptosis. However, different factors that can dysregulate cell signaling and cellular homeostasis can also affect miRNA expression. The alteration of miRNA expression can work against disturbing factors or mediate their effects. Oxidative stress is one of these factors. Considering the complex interplay between ROS level and miRNA regulation and both of these with cancer development, we review the role of miRNAs in cancer, focusing on their function in oxidative stress.
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Affiliation(s)
- Seyed Omar Ebrahimi
- Department of Genetics, Faculty of Basic Sciences, Shahrekord University, Shahrekord, Iran
| | - Somayeh Reiisi
- Department of Genetics, Faculty of Basic Sciences, Shahrekord University, Shahrekord, Iran
| | - Salar Shareef
- Department of Medical Laboratory Science, College of Sciences, University of Raparin, Ranya, Kurdistan Region, Iraq
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MicroRNAs as the actors in the atherosclerosis scenario. J Physiol Biochem 2019; 76:1-12. [PMID: 31808077 DOI: 10.1007/s13105-019-00710-7] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2019] [Accepted: 10/21/2019] [Indexed: 02/07/2023]
Abstract
Atherosclerosis is considered as the most common cardiovascular disease and a leading cause of global mortality, which develops through consecutive steps. Various cellular and molecular biomarkers such as microRNAs are identified to be involved in atherosclerosis progression. MicroRNAs are a group of endogenous, short, non-coding RNAs, which are able to bind to specific sequences on target messenger RNAs and thereby modulate gene expression post-transcriptionally. MicroRNAs are key players in wide range of biological processes; thus, their expression level is regulated in pathophysiological conditions. Ample evidences including in vitro and in vivo studies approved a critical role of microRNAs in epigenetic and the sequential processes of atherosclerosis from risk factors to plaque formation, progression, and rupture. Based on these findings, miRNAs seems to be promising candidates for therapeutic approach. This review summarizes the role of miRNAs in atherosclerosis development, epigenetic, and therapy. Moreover, the application of exosomes in miRNA delivery, and/or their prognostic and diagnostic values are also discussed.
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LncRNA NR_003923 promotes cell proliferation, migration, fibrosis, and autophagy via the miR-760/miR-215-3p/IL22RA1 axis in human Tenon's capsule fibroblasts. Cell Death Dis 2019; 10:594. [PMID: 31391457 PMCID: PMC6685939 DOI: 10.1038/s41419-019-1829-1] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2018] [Revised: 07/14/2019] [Accepted: 07/23/2019] [Indexed: 02/07/2023]
Abstract
Noncoding RNAs (ncRNAs), including long ncRNAs (lncRNA) have manifested an important role in the pathophysiology of many diseases. Glaucoma is a primary cause of irreversible blindness worldwide. However, the involvement of lncRNAs in glaucoma remains largely unknown. Here, we performed the lncRNA expression assay based on clinical tissues and identified a specific functional lncRNA, NR_003923, and investigated its potential role in glaucoma. Knockdown of NR_003923 in human Tenon’s capsule fibroblast cells (HTFs) inhibited TGF-β-induced cell migration, proliferation, fibrosis, and autophagy. The dual luciferase reporter assay confirmed that miR-760 and miR-215-3p interacted with NR_003923. miR-760 and miR-215-3p inhibitor reversed the effects of NR_003923 and TGF-β-induced cell apoptosis. Moreover, the expression of miR-760 and miR-215-3p was decreased in glaucoma comparing with control. Furthermore, through microarray we found IL22RA1 was increased in glaucoma and both of miR-760 and miR-215-3p bound to the 3′ UTR of IL22RA1. Overexpression of IL22RA1 enhanced HTFs migration and proliferation, while miR-760 and miR-215-3p mimics reversed these promotive biological roles induced by IL22RA1. In conclusion, NR_003923 and IL22RA1 might contribute to glaucoma progression and be a novel and potential biomarkers and therapeutic targets for glaucoma.
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MicroRNAs as Potential Biomarkers for Chemoresistance in Adenocarcinomas of the Esophagogastric Junction. JOURNAL OF ONCOLOGY 2019; 2019:4903152. [PMID: 31467538 PMCID: PMC6701342 DOI: 10.1155/2019/4903152] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/14/2019] [Accepted: 07/15/2019] [Indexed: 12/11/2022]
Abstract
Concerning adenocarcinomas of the esophagogastric junction, neoadjuvant chemotherapy is regularly implemented, but patients' response varies greatly, with some cases showing no therapeutic effect, being deemed as chemoresistant. Small, noncoding RNAs (miRNAs) have evolved as key players in biological processes, including malignant diseases, often promoting tumor growth and expansion. In addition, specific miRNAs have been implicated in the development of chemoresistance through evasion of apoptosis, cell cycle alterations, and drug target modification. We performed a retrospective study of 33 patients receiving neoadjuvant chemotherapy by measuring their miRNA expression profiles. Histologic tumor regression was evaluated using resection specimens, while miRNA profiles were prepared using preoperative biopsies without prior therapy. A preselected panel of 96 miRNAs, known to be of importance in various malignancies, was used to test for significant differences between responsive (chemosensitive) and nonresponsive (chemoresistant) cases. The cohort consisted of 12 nonresponsive and 21 responsive cases with the following 4 miRNAs differentially expressed between both the groups: hsa-let-7f-5p, hsa-miRNA-221-3p, hsa-miRNA-31-5p, and hsa-miRNA-191-5p. The former 3 showed upregulation in chemoresistant cases, while the latter showed upregulation in chemosensitive cases. In addition, significant correlation between high expression of hsa-miRNA-194-5p and prolonged survival could be demonstrated (p value <0.0001). In conclusion, we identified a panel of 3 miRNAs predicting chemoresistance and a single miRNA contributing to chemosensitivity. These miRNAs might function as prognostic biomarkers and enable clinicians to better predict the effect of one or more reliably select patients benefitting from (neoadjuvant) chemotherapy.
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Abstract
Cellular senescence is a state of permanent cell-cycle arrest triggered by different internal and external stimuli. This phenomenon is considered to be both beneficial and detrimental depending on the cell types and biological contexts. During normal embryonic development and after tissue injury, cellular senescence is critical for tissue remodeling. In addition, this process is useful for arresting growth of tumor cells, particularly during early onset of tumorigenesis. However, accumulation of senescent cells decreases tissue regenerative capabilities and induces inflammation, which is responsible for cancer and organismal aging. Therefore cellular senescence has to be tightly regulated, and dysregulation might lead to the aging and human diseases. Among many regulators of cellular senescence, in this review, I will focus on microRNAs, small non-coding RNAs playing critical roles in diverse biological events including cellular senescence. [BMB Reports 2018; 51(10): 494-500].
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Affiliation(s)
- Nayoung Suh
- Department of Pharmaceutical Engineering, Soon Chun Hyang University, Asan 31538, Korea
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Banfai K, Ernszt D, Pap A, Bai P, Garai K, Belharazem D, Pongracz JE, Kvell K. "Beige" Cross Talk Between the Immune System and Metabolism. Front Endocrinol (Lausanne) 2019; 10:369. [PMID: 31275241 PMCID: PMC6591453 DOI: 10.3389/fendo.2019.00369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2019] [Accepted: 05/24/2019] [Indexed: 12/25/2022] Open
Abstract
With thymic senescence the epithelial network shrinks to be replaced by adipose tissue. Transcription factor TBX-1 controls thymus organogenesis, however, the same TBX-1 has also been reported to orchestrate beige adipose tissue development. Given these different roles of TBX-1, we have assessed if thymic TBX-1 expression persists and demonstrates this dualism during adulthood. We have also checked whether thymic adipose involution could yield beige adipose tissue. We have used adult mouse and human thymus tissue from various ages to evaluate the kinetics of TBX-1 expression, as well as mouse (TEP1) and human (1889c) thymic epithelial cells (TECs) for our studies. Electron micrographs show multi-locular lipid deposits typical of beige adipose cells. Histology staining shows the accumulation of neutral lipid deposits. qPCR measurements show persistent and/or elevating levels of beige-specific and beige-indicative markers (TBX-1, EAR-2, UCP-1, PPAR-gamma). We have performed miRNome profiling using qPCR-based QuantStudio platform and amplification-free NanoString platform. We have observed characteristic alterations, including increased miR21 level (promoting adipose tissue development) and decreased miR34a level (bias toward beige adipose tissue differentiation). Finally, using the Seahorse metabolic platform we have recorded a metabolic profile (OCR/ECAR ratio) indicative of beige adipose tissue. In summary, our results support that thymic adipose tissue emerging with senescence is bona fide beige adipose tissue. Our data show how the borders blur between a key immune tissue (the thymus) and a key metabolic tissue (beige adipose tissue) with senescence. Our work contributes to the understanding of cross talk between the immune system and metabolism.
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Affiliation(s)
- Krisztina Banfai
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pécs, Pécs, Hungary
- Szentagothai Research Center, University of Pécs, Pécs, Hungary
| | - David Ernszt
- Szentagothai Research Center, University of Pécs, Pécs, Hungary
- Department of Physiology, Medical School, University of Pécs, Pécs, Hungary
| | - Attila Pap
- Department of Biochemistry and Molecular Biology, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Peter Bai
- Medical Chemistry, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
- MTA-DE Cell Biology and Signaling Research Group, Debrecen, Hungary
- MTA-DE Lendulet Laboratory of Cellular Metabolism, Debrecen, Hungary
- Research Center for Molecular Medicine, University of Debrecen, Debrecen, Hungary
| | - Kitti Garai
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pécs, Pécs, Hungary
- Szentagothai Research Center, University of Pécs, Pécs, Hungary
| | - Djeda Belharazem
- Department of Pathology, University Hospital of Mannheim, Mannheim, Germany
| | - Judit E. Pongracz
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pécs, Pécs, Hungary
- Szentagothai Research Center, University of Pécs, Pécs, Hungary
| | - Krisztian Kvell
- Department of Pharmaceutical Biotechnology, Faculty of Pharmacy, University of Pécs, Pécs, Hungary
- Szentagothai Research Center, University of Pécs, Pécs, Hungary
- *Correspondence: Krisztian Kvell
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García-López S, Albo-Castellanos C, Urdinguio RG, Cañón S, Sánchez-Cabo F, Martínez-Serrano A, Fraga MF, Bernad A. Deregulation of the imprinted DLK1-DIO3 locus ncRNAs is associated with replicative senescence of human adipose-derived stem cells. PLoS One 2018; 13:e0206534. [PMID: 30395586 PMCID: PMC6218046 DOI: 10.1371/journal.pone.0206534] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2018] [Accepted: 10/15/2018] [Indexed: 12/24/2022] Open
Abstract
Background Human adult adipose-derived stem cells (hADSCs) have become the most promising cell source for regenerative medicine. However the prolonged ex vivo expansion periods required to obtain the necessary therapeutic dose promotes progressive senescence, with the concomitant reduction of their therapeutic potential. Aim and scope A better understanding of the determinants of hADSC senescence is needed to improve biosafety while preserving therapeutic efficiency. Here, we investigated the association between deregulation of the imprinted DLK1-DIO3 region and replicative senescence in hADSC cultures. Methods We compared hADSC cultures at short (PS) and prolonged (PL) passages, both in standard and low [O2] (21 and 3%, respectively), in relation to replicative senescence. hADSCs were evaluated for expression alterations in the DLK1-DIO3 region on chromosome 14q32, and particularly in its main miRNA cluster. Results Comparison of hADSCs cultured at PL or PS surprisingly showed a quite significant fraction (69%) of upregulated miRNAs in PL cultures mapping to the imprinted 14q32 locus, the largest miRNA cluster described in the genome. In agreement, expression of the lncRNA MEG3 (Maternally Expressed 3; Meg3/Gtl2), cultured at 21 and 3% [O2], was also significantly higher in PL than in PS passages. During hADSC replicative senescence the AcK16H4 activating mark was found to be significantly associated with the deregulation of the entire DLK1-DIO3 locus, with a secondary regulatory role for the methylation of DMR regions. Conclusion A direct relationship between DLK1-DIO3 deregulation and replicative senescence of hADSCs is reported, involving upregulation of a very significant fraction of its largest miRNA cluster (14q32.31), paralleled by the progressive overexpression of the lncRNA MEG3, which plays a central role in the regulation of Dlk1/Dio3 activation status in mice.
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Affiliation(s)
- Silvia García-López
- Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB-CSIC), Campus de Cantoblanco, Madrid, Spain
- Department of Cardiovascular Development and Repair, Centro Nacional de Investigaciones Carlos III (CNIC), Madrid, Spain
| | - Carmen Albo-Castellanos
- Department of Cardiovascular Development and Repair, Centro Nacional de Investigaciones Carlos III (CNIC), Madrid, Spain
| | - Rocio G. Urdinguio
- Cancer Epigenetics Laboratory, Institute of Oncology of Asturias (IUOPA), Hospital Universitaria Central de Asturias (HUCA) and Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Universidad de Oviedo (UO), Asturias, Spain
| | - Susana Cañón
- Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB-CSIC), Campus de Cantoblanco, Madrid, Spain
- Department of Cardiovascular Development and Repair, Centro Nacional de Investigaciones Carlos III (CNIC), Madrid, Spain
| | - Fátima Sánchez-Cabo
- Bioinformatics Unit, Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, Spain
| | - Alberto Martínez-Serrano
- Molecular Biology Department (UAM) and Molecular Neuropathology Department, Center of Molecular Biology Severo Ochoa-CSIC, Universidad Autónoma de Madrid, Campus Cantoblanco, Madrid, Spain
| | - Mario F. Fraga
- Cancer Epigenetics Laboratory, Institute of Oncology of Asturias (IUOPA), Hospital Universitaria Central de Asturias (HUCA) and Nanomaterials and Nanotechnology Research Center (CINN-CSIC), Universidad de Oviedo (UO), Asturias, Spain
| | - Antonio Bernad
- Department of Immunology and Oncology, Centro Nacional de Biotecnología (CNB-CSIC), Campus de Cantoblanco, Madrid, Spain
- Department of Cardiovascular Development and Repair, Centro Nacional de Investigaciones Carlos III (CNIC), Madrid, Spain
- * E-mail:
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Gong H, Sheng X, Xue J, Zhu D. MicroRNA-365 regulates the occurrence and immune response of sepsis following multiple trauma via interleukin-6. Exp Ther Med 2018; 16:3745-3751. [PMID: 30233734 DOI: 10.3892/etm.2018.6647] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2017] [Accepted: 08/10/2017] [Indexed: 12/17/2022] Open
Abstract
In the present study, the expression of microRNA (miR)-365 and interleukin (IL)-6 in peripheral blood mononuclear cells and serum from patients with sepsis following multiple trauma has been investigated. A total of 26 patients with sepsis following multiple trauma were included as the experimental group, whereas 21 contemporaneous patients without sepsis following multiple trauma were included as the negative control group. The expression of IL-6 mRNA and miR-365 was determined by reverse transcription-quantitative polymerase chain reaction, and western blot analysis was used to measure IL-6 protein expression. ELISA was performed to determine the secretion of IL-6 protein. Following stimulation with lipopolysaccharide (LPS) for 24 h, THP-1 cells were used to examine the expression of miR-365 and the levels of IL-6 protein and mRNA in cells simulating sepsis. A dual luciferase reporter assay revealed that IL-6 mRNA was a direct target of miR-365. Patients with sepsis following multiple trauma exhibited significantly higher IL-6 mRNA and protein levels than patients without sepsis (P<0.05). In addition, miR-365 expression in patients with sepsis following trauma was significantly lower than in patients without sepsis (P<0.05). Similar effects were observed in THP-1 cells treated with LPS. The present study demonstrated that increased expression of IL-6 in patients with sepsis following multiple trauma is associated with decreased expression of miR-365. miR-365 may regulate the occurrence and immune response of sepsis following multiple trauma via IL-6. These results may elucidate agents for clinical diagnosis and treatment of the disease.
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Affiliation(s)
- Hui Gong
- Department of Emergency Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Xiaomin Sheng
- Department of Emergency Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Jianhua Xue
- Department of Emergency Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
| | - Dongbo Zhu
- Department of Emergency Surgery, Affiliated Hospital of Nantong University, Nantong, Jiangsu 226001, P.R. China
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Hu W, Wu J, Jiang W, Tang J. MicroRNAs and Presbycusis. Aging Dis 2018; 9:133-142. [PMID: 29392088 PMCID: PMC5772851 DOI: 10.14336/ad.2017.0119] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2016] [Accepted: 01/19/2017] [Indexed: 12/19/2022] Open
Abstract
Presbycusis (age-related hearing loss) is the most universal sensory degenerative disease in elderly people caused by the degeneration of cochlear cells. Non-coding microRNAs (miRNAs) play a fundamental role in gene regulation in almost every multicellular organism, and control the aging processes. It has been identified that various miRNAs are up- or down-regulated during mammalian aging processes in tissue-specific manners. Most miRNAs bind to specific sites on their target messenger-RNAs (mRNAs) and decrease their expression. Germline mutation may lead to dysregulation of potential miRNAs expression, causing progressive hair cell degeneration and age-related hearing loss. Therapeutic innovations could emerge from a better understanding of diverse function of miRNAs in presbycusis. This review summarizes the relationship between miRNAs and presbycusis, and presents novel miRNAs-targeted strategies against presbycusis.
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Affiliation(s)
- Weiming Hu
- 1Department of Otolaryngology-Head and Neck Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Junwu Wu
- 2Department of Otolaryngology-Head and Neck Surgery, Yiwu traditional Chinese Medicine Hospital, Yiwu 322000, China.,3Department of Otolaryngology-Head and Neck Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou 310016, China
| | - Wenjing Jiang
- 1Department of Otolaryngology-Head and Neck Surgery, Zhejiang Provincial People's Hospital, People's Hospital of Hangzhou Medical College, Hangzhou 310014, China
| | - Jianguo Tang
- 3Department of Otolaryngology-Head and Neck Surgery, Sir Run Run Shaw Hospital, Medical College of Zhejiang University, Hangzhou 310016, China
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He M, Lin Y, Tang Y, Liu Y, Zhou W, Li C, Sun G, Guo M. miR-638 suppresses DNA damage repair by targeting SMC1A expression in terminally differentiated cells. Aging (Albany NY) 2017; 8:1442-56. [PMID: 27405111 PMCID: PMC4993341 DOI: 10.18632/aging.100998] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Accepted: 06/28/2016] [Indexed: 12/27/2022]
Abstract
The reduction of DNA damage repair capacity in terminally differentiated cells may be involved in sensitivity to cancer chemotherapy drugs; however, the underlying molecular mechanism is still not fully understood. Herein, we evaluated the role of miR-638 in the regulation of DNA damage repair in terminally differentiated cells. Our results show that miR-638 expression was up-regulated during cellular terminal differentiation and involved in mediating DNA damage repair processes. Results from a luciferase reporting experiment show that structural maintenance of chromosomes (SMC)1A was a potential target of miR-638; this was verified by western blot assays during cell differentiation and DNA damage induction. Overexpression of miR-638 enhanced the sensitivity of cancer cells to cisplatin, thus reducing cell viability in response to chemotherapy drug treatment. Furthermore, miR-638 overexpression affected DNA damage repair processes by interfering with the recruitment of the DNA damage repair-related protein, γH2AX, to DNA break sites. These findings indicate that miR-638 might act as a sensitizer in cancer chemotherapy and accompany chemotherapy drugs to enhance chemotherapeutic efficacy and to improve the chance of recovery from cancer.
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Affiliation(s)
- Mingyang He
- College of Life Sciences, Wuhan University, 430072 Wuhan, P. R. China
| | - Yi Lin
- College of Life Sciences, Wuhan University, 430072 Wuhan, P. R. China
| | - Yunlan Tang
- College of Life Sciences, Wuhan University, 430072 Wuhan, P. R. China
| | - Yi Liu
- College of Life Sciences, Wuhan University, 430072 Wuhan, P. R. China
| | - Weiwei Zhou
- College of Life Sciences, Wuhan University, 430072 Wuhan, P. R. China
| | - Chuang Li
- College of Life Sciences, Wuhan University, 430072 Wuhan, P. R. China
| | - Guihong Sun
- School of Basic Medical Sciences, Wuhan University, 430071 Wuhan, P.R. China
| | - Mingxiong Guo
- College of Life Sciences, Wuhan University, 430072 Wuhan, P. R. China
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Mahajan AS, Sugita BM, Duttargi AN, Saenz F, Krawczyk E, McCutcheon JN, Fonseca AS, Kallakury B, Pohlmann P, Gusev Y, Cavalli LR. Genomic comparison of early-passage conditionally reprogrammed breast cancer cells to their corresponding primary tumors. PLoS One 2017; 12:e0186190. [PMID: 29049316 PMCID: PMC5648156 DOI: 10.1371/journal.pone.0186190] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2017] [Accepted: 09/27/2017] [Indexed: 02/06/2023] Open
Abstract
Conditionally reprogrammed cells (CRCs) are epithelial cells that are directly isolated from patients' specimens and propagated in vitro with feeder cells and a Rho kinase inhibitor. A number of these cells have been generated from biopsies of breast cancer patients, including ductal carcinoma in situ and invasive carcinomas. The characterization of their genomic signatures is essential to determine their ability to reflect the natural biology of their tumors of origin. In this study, we performed the genomic characterization of six newly established invasive breast cancer CRC cultures in comparison to the original patients' primary breast tumors (PBT) from which they derived. The CRCs and corresponding PBTs were simultaneously profiled by genome-wide array-CGH, targeted next generation sequencing and global miRNA expression to determine their molecular similarities in the patterns of copy number alterations (CNAs), gene mutations and miRNA expression levels, respectively. The CRCs' epithelial cells content and ploidy levels were also evaluated by flow cytometry. A similar level of CNAs was observed in the pairs of CRCs/PBTs analyzed by array-CGH, with >95% of overlap for the most frequently affected cytobands. Consistently, targeted next generation sequencing analysis showed the retention of specific somatic variants in the CRCs as present in their original PBTs. Global miRNA profiling closely clustered the CRCs with their PBTs (Pearson Correlation, ANOVA paired test, P<0.05), indicating also similarity at the miRNA expression level; the retention of tumor-specific alterations in a subset of miRNAs in the CRCs was further confirmed by qRT-PCR. These data demonstrated that the human breast cancer CRCs of this study maintained at early passages the overall copy number, gene mutations and miRNA expression patterns of their original tumors. The further characterization of these cells by other molecular and cellular phenotypes at late cell passages, are required to further expand their use as a unique and representative ex-vivo tumor model for basic science and translational breast cancer studies.
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Affiliation(s)
- Akanksha S. Mahajan
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC, United States of America
| | - Bruna M. Sugita
- Department of Genetics, Federal University of Paraná, Curitiba, Paraná, Brazil
| | - Anju N. Duttargi
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC, United States of America
| | - Francisco Saenz
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC, United States of America
| | - Ewa Krawczyk
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC, United States of America
| | - Justine N. McCutcheon
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC, United States of America
| | - Aline S. Fonseca
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC, United States of America
| | - Bhaskar Kallakury
- Department of Pathology, Georgetown University, Washington DC, United States of America
| | - Paula Pohlmann
- Division of Hematology-Oncology, MedStar Georgetown University Hospital, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC, United States of America
| | - Yuriy Gusev
- Innovation Center for Biomedical Informatics, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC, United States of America
| | - Luciane R. Cavalli
- Department of Oncology, Lombardi Comprehensive Cancer Center, Georgetown University, Washington DC, United States of America
- * E-mail:
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Panda AC, Grammatikakis I, Kim KM, De S, Martindale JL, Munk R, Yang X, Abdelmohsen K, Gorospe M. Identification of senescence-associated circular RNAs (SAC-RNAs) reveals senescence suppressor CircPVT1. Nucleic Acids Res 2017; 45:4021-4035. [PMID: 27928058 PMCID: PMC5397146 DOI: 10.1093/nar/gkw1201] [Citation(s) in RCA: 182] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2016] [Accepted: 11/18/2016] [Indexed: 12/11/2022] Open
Abstract
Using RNA sequencing (RNA-Seq), we compared the expression patterns of circular RNAs in proliferating (early-passage) and senescent (late-passage) human diploid WI-38 fibroblasts. Among the differentially expressed senescence-associated circRNAs (which we termed ‘SAC-RNAs’), we identified CircPVT1, generated by circularization of an exon of the PVT1 gene, as a circular RNA showing markedly reduced levels in senescent fibroblasts. Reducing CircPVT1 levels in proliferating fibroblasts triggered senescence, as determined by a rise in senescence-associated β-galactosidase activity, higher abundance of CDKN1A/P21 and TP53, and reduced cell proliferation. Although several microRNAs were predicted to bind CircPVT1, only let-7 was found enriched after pulldown of endogenous CircPVT1, suggesting that CircPVT1 might selectively modulate let-7 activity and hence expression of let-7-regulated mRNAs. Reporter analysis revealed that CircPVT1 decreased the cellular pool of available let-7, and antagonizing endogenous let-7 triggered cell proliferation. Importantly, silencing CircPVT1 promoted cell senescence and reversed the proliferative phenotype observed after let-7 function was impaired. Consequently, the levels of several proliferative proteins that prevent senescence, such as IGF2BP1, KRAS and HMGA2, encoded by let-7 target mRNAs, were reduced by silencing CircPVT1. Our findings indicate that the SAC-RNA CircPVT1, elevated in dividing cells and reduced in senescent cells, sequesters let-7 to enable a proliferative phenotype.
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Affiliation(s)
- Amaresh C Panda
- Laboratory of Genetics and Genomics, National Institute on Aging, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Ioannis Grammatikakis
- Laboratory of Genetics and Genomics, National Institute on Aging, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Kyoung Mi Kim
- Laboratory of Genetics and Genomics, National Institute on Aging, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Supriyo De
- Laboratory of Genetics and Genomics, National Institute on Aging, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Jennifer L Martindale
- Laboratory of Genetics and Genomics, National Institute on Aging, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Rachel Munk
- Laboratory of Genetics and Genomics, National Institute on Aging, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Xiaoling Yang
- Laboratory of Genetics and Genomics, National Institute on Aging, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Kotb Abdelmohsen
- Laboratory of Genetics and Genomics, National Institute on Aging, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
| | - Myriam Gorospe
- Laboratory of Genetics and Genomics, National Institute on Aging, Intramural Research Program, National Institutes of Health, Baltimore, MD 21224, USA
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26
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Markopoulos GS, Roupakia E, Tokamani M, Chavdoula E, Hatziapostolou M, Polytarchou C, Marcu KB, Papavassiliou AG, Sandaltzopoulos R, Kolettas E. A step-by-step microRNA guide to cancer development and metastasis. Cell Oncol (Dordr) 2017; 40:303-339. [DOI: 10.1007/s13402-017-0341-9] [Citation(s) in RCA: 93] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/04/2017] [Indexed: 01/17/2023] Open
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27
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Identification of Four Oxidative Stress-Responsive MicroRNAs, miR-34a-5p, miR-1915-3p, miR-638, and miR-150-3p, in Hepatocellular Carcinoma. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2017; 2017:5189138. [PMID: 28811864 PMCID: PMC5546075 DOI: 10.1155/2017/5189138] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/30/2017] [Accepted: 04/20/2017] [Indexed: 02/07/2023]
Abstract
Increasing evidence suggests that oxidative stress plays an essential role during carcinogenesis. However, the underlying mechanism between oxidative stress and carcinogenesis remains unknown. Recently, microRNAs (miRNAs) are revealed to be involved in oxidative stress response and carcinogenesis. This study aims to identify miRNAs in hepatocellular carcinoma (HCC) cells which might involve in oxidative stress response. An integrated analysis of miRNA expression signature was performed by employing robust rank aggregation (RRA) method, and four miRNAs (miR-34a-5p, miR-1915-3p, miR-638, and miR-150-3p) were identified as the oxidative stress-responsive miRNAs. Pathway enrichment analysis suggested that these four miRNAs played an important role in antiapoptosis process. Our data also revealed miR-34a-5p and miR-1915-3p, but not miR-150-3p and miR-638, were regulated by p53 in HCC cell lines under oxidative stress. In addition, clinical investigation revealed that these four miRNAs might be involved in oxidative stress response by targeting oxidative stress-related genes in HCC tissues. Kaplan-Meier analysis showed that these four miRNAs were associated with patients' overall survival. In conclusion, we identified four oxidative stress-responsive miRNAs, which were regulated by p53-dependent (miR-34a-5p and miR-1915-3p) and p53-independent pathway (miR-150-3p and miR-638). These four miRNAs may offer new strategy for HCC diagnosis and prognosis.
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28
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Senescence-associated microRNAs target cell cycle regulatory genes in normal human lung fibroblasts. Exp Gerontol 2017; 96:110-122. [PMID: 28658612 DOI: 10.1016/j.exger.2017.06.017] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 06/19/2017] [Accepted: 06/24/2017] [Indexed: 12/20/2022]
Abstract
Senescence recapitulates the ageing process at the cell level. A senescent cell stops dividing and exits the cell cycle. MicroRNAs (miRNAs) acting as master regulators of transcription, have been implicated in senescence. In the current study we investigated and compared the expression of miRNAs in young versus senescent human fibroblasts (HDFs), and analysed the role of mRNAs expressed in replicative senescent HFL-1 HDFs. Cell cycle analysis confirmed that HDFs accumulated in G1/S cell cycle phase. Nanostring analysis of isolated miRNAs from young and senescent HFL-1 showed that a distinct set of 15 miRNAs were significantly up-regulated in senescent cells including hsa-let-7d-5p, hsa-let-7e-5p, hsa-miR-23a-3p, hsa-miR-34a-5p, hsa-miR-122-5p, hsa-miR-125a-3p, hsa-miR-125a-5p, hsa-miR-125b-5p, hsa-miR-181a-5p, hsa-miR-221-3p, hsa-miR-222-3p, hsa-miR-503-5p, hsa-miR-574-3p, hsa-miR-574-5p and hsa-miR-4454. Importantly, pathway analysis of miRNA target genes down-regulated during replicative senescence in a public RNA-seq data set revealed a significant high number of genes regulating cell cycle progression, both G1/S and G2/M cell cycle phase transitions and telomere maintenance. The reduced expression of selected miRNA targets, upon replicative and oxidative-stress induced senescence, such as the cell cycle effectors E2F1, CcnE, Cdc6, CcnB1 and Cdc25C was verified at the protein and/or RNA levels. Induction of G1/S cell cycle phase arrest and down-regulation of cell cycle effectors correlated with the up-regulation of miR-221 upon both replicative and oxidative stress-induced senescence. Transient expression of miR-221/222 in HDFs promoted the accumulation of HDFs in G1/S cell cycle phase. We propose that miRNAs up-regulated during replicative senescence may act in concert to induce cell cycle phase arrest and telomere erosion, establishing a senescent phenotype.
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29
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Kucher AN, Nazarenko MS, Markov AV, Koroleva IA, Barbarash OL. Variability of methylation profiles of CpG sites in microRNA genes in leukocytes and vascular tissues of patients with atherosclerosis. BIOCHEMISTRY (MOSCOW) 2017; 82:698-706. [DOI: 10.1134/s0006297917060062] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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30
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Lang A, Grether-Beck S, Singh M, Kuck F, Jakob S, Kefalas A, Altinoluk-Hambüchen S, Graffmann N, Schneider M, Lindecke A, Brenden H, Felsner I, Ezzahoini H, Marini A, Weinhold S, Vierkötter A, Tigges J, Schmidt S, Stühler K, Köhrer K, Uhrberg M, Haendeler J, Krutmann J, Piekorz RP. MicroRNA-15b regulates mitochondrial ROS production and the senescence-associated secretory phenotype through sirtuin 4/SIRT4. Aging (Albany NY) 2017; 8:484-505. [PMID: 26959556 PMCID: PMC4833141 DOI: 10.18632/aging.100905] [Citation(s) in RCA: 91] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Mammalian sirtuins are involved in the control of metabolism and life-span regulation. Here, we link the mitochondrial sirtuin SIRT4 with cellular senescence, skin aging, and mitochondrial dysfunction. SIRT4 expression significantly increased in human dermal fibroblasts undergoing replicative or stress-induced senescence triggered by UVB or gamma-irradiation. In-vivo, SIRT4 mRNA levels were upregulated in photoaged vs. non-photoaged human skin. Interestingly, in all models of cellular senescence and in photoaged skin, upregulation of SIRT4 expression was associated with decreased levels of miR-15b. The latter was causally linked to increased SIRT4 expression because miR-15b targets a functional binding site in the SIRT4 gene and transfection of oligonucleotides mimicking miR-15b function prevented SIRT4 upregulation in senescent cells. Importantly, increased SIRT4 negatively impacted on mitochondrial functions and contributed to the development of a senescent phenotype. Accordingly, we observed that inhibition of miR-15b, in a SIRT4-dependent manner, increased generation of mitochondrial reactive oxygen species, decreased mitochondrial membrane potential, and modulated mRNA levels of nuclear encoded mitochondrial genes and components of the senescence-associated secretory phenotype (SASP). Thus, miR-15b is a negative regulator of stress-induced SIRT4 expression thereby counteracting senescence associated mitochondrial dysfunction and regulating the SASP and possibly organ aging, such as photoaging of human skin.
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Affiliation(s)
- Alexander Lang
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany.,Molecular Proteomics Laboratory, BMFZ, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Susanne Grether-Beck
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Madhurendra Singh
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Fabian Kuck
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Sascha Jakob
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Andreas Kefalas
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Simone Altinoluk-Hambüchen
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Nina Graffmann
- Institut für Transplantationsdiagnostik und Zelltherapeutika (ITZ), Düsseldorf, Germany
| | - Maren Schneider
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Antje Lindecke
- Biologisch-Medizinisches Forschungszentrum (BMFZ), Düsseldorf, Germany
| | - Heidi Brenden
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Ingo Felsner
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Hakima Ezzahoini
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Alessandra Marini
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Sandra Weinhold
- Institut für Transplantationsdiagnostik und Zelltherapeutika (ITZ), Düsseldorf, Germany
| | - Andrea Vierkötter
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Julia Tigges
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Stephan Schmidt
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Kai Stühler
- Molecular Proteomics Laboratory, BMFZ, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
| | - Karl Köhrer
- Biologisch-Medizinisches Forschungszentrum (BMFZ), Düsseldorf, Germany
| | - Markus Uhrberg
- Institut für Transplantationsdiagnostik und Zelltherapeutika (ITZ), Düsseldorf, Germany
| | - Judith Haendeler
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany
| | - Jean Krutmann
- IUF - Leibniz Research Institute for Environmental Medicine, Düsseldorf, Germany.,University of Düsseldorf, Medical Faculty, Düsseldorf, Germany
| | - Roland P Piekorz
- Institut für Biochemie und Molekularbiologie II, Universitätsklinikum der Heinrich-Heine-Universität, Düsseldorf, Germany
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31
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Xiang W, Lin H, Wang Q, Chen W, Liu Z, Chen H, Zhang H, Chen W. miR‑34a suppresses proliferation and induces apoptosis of human lens epithelial cells by targeting E2F3. Mol Med Rep 2016; 14:5049-5056. [PMID: 27840975 PMCID: PMC5355663 DOI: 10.3892/mmr.2016.5901] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 10/06/2016] [Indexed: 12/29/2022] Open
Abstract
microRNA (miRNA) is abnormally expressed in numerous diseases, and it was intimately associated with cell proliferation and apoptosis. However, the mechanism by which miRNAs control cataractogenesis remains unclear. In the current study, it was demonstrated that miR-34a was highly expressed in the cataractous lens by stem-loop reverse transcription-quantitative polymerase chain reaction. Trying to investigate the role of miR-34a in human lens epithelial cells, miR-34a mimics were transfected into SRA01/04 cells, and this suppressed proliferation and induced apoptosis. Subsequently, E2F3 was confirmed as a direct target of miR-34a. Downregulation of E2F3 by small interfering (si) RNA siE2F3 resulted in proliferation inhibition and apoptosis of SRA01/04 cells. Furthermore, it was demonstrated that miR-34a and siE2F3 downregulated E2F3 expression at a protein level. In summary, the current study demonstrated that miR-34a suppressed the proliferation and induced apoptosis of SRA01/04 cells by downregulating E2F3. These observations provide novel insights with potential therapeutic applications for the treatment of cataracts.
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Affiliation(s)
- Wu Xiang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Haotian Lin
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Qilin Wang
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Wan Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Zhaochuan Liu
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Hui Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑Sen University, Guangzhou, Guangdong 510060, P.R. China
| | - Hui Zhang
- Institute of Human Virology, Zhongshan School of Medicine, Sun Yat‑Sen University, Guangzhou, Guangdong 510074, P.R. China
| | - Weirong Chen
- State Key Laboratory of Ophthalmology, Zhongshan Ophthalmic Center, Sun Yat‑Sen University, Guangzhou, Guangdong 510060, P.R. China
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32
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Liang L, Stone RC, Stojadinovic O, Ramirez H, Pastar I, Maione AG, Smith A, Yanez V, Veves A, Kirsner RS, Garlick JA, Tomic-Canic M. Integrative analysis of miRNA and mRNA paired expression profiling of primary fibroblast derived from diabetic foot ulcers reveals multiple impaired cellular functions. Wound Repair Regen 2016; 24:943-953. [PMID: 27607190 DOI: 10.1111/wrr.12470] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2016] [Accepted: 08/20/2016] [Indexed: 12/24/2022]
Abstract
Diabetic foot ulcers (DFUs) are one of the major complications of diabetes. Its molecular pathology remains poorly understood, impeding the development of effective treatments. Although it has been established that multiple cell types, including fibroblasts, keratinocytes, macrophages, and endothelial cells, all contribute to inhibition of healing, less is known regarding contributions of individual cell type. Thus, we generated primary fibroblasts from nonhealing DFUs and evaluated their cellular and molecular properties in comparison to nondiabetic foot fibroblasts (NFFs). Specifically, we analyzed both micro-RNA and mRNA expression profiles of primary DFU fibroblasts. Paired genomic analyses identified a total of 331 reciprocal miRNA-mRNA pairs including 21 miRNAs (FC > 2.0) along with 239 predicted target genes (FC > 1.5) that are significantly and differentially expressed. Of these, we focused on three miRNAs (miR-21-5p, miR-34a-5p, miR-145-5p) that were induced in DFU fibroblasts as most differentially regulated. The involvement of these microRNAs in wound healing was investigated by testing the expression of their downstream targets as well as by quantifying cellular behaviors in prospectively collected and generated cell lines from 15 patients (seven DFUF and eight NFF samples). We found large number of downstream targets of miR-21-5p, miR-34a-5p, miR-145-5p to be coordinately regulated in mRNA profiles, which was confirmed by quantitative real-time PCR. Pathway analysis on paired miRNA-mRNA profiles predicted inhibition of cell movement and cell proliferation, as well as activation of cell differentiation and senescence in DFU fibroblasts, which was confirmed by cellular assays. We concluded that induction of miR-21-5p, miR-34a-5p, miR-145-5p in DFU dermal fibroblasts plays an important role in impairing multiple cellular functions, thus contributing to overall inhibition of healing in DFUs.
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Affiliation(s)
- Liang Liang
- Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine (UMMSOM), Wound Healing and Regenerative Medicine Research Program
| | - Rivka C Stone
- Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine (UMMSOM), Wound Healing and Regenerative Medicine Research Program
| | - Olivera Stojadinovic
- Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine (UMMSOM), Wound Healing and Regenerative Medicine Research Program.,Wound Healing Clinical Research Program, UM Health System, Miami, Florida
| | - Horacio Ramirez
- Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine (UMMSOM), Wound Healing and Regenerative Medicine Research Program.,Human Genomics and Genetics Graduate Program, Tufts University, Boston, Massachusetts
| | - Irena Pastar
- Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine (UMMSOM), Wound Healing and Regenerative Medicine Research Program
| | - Anna G Maione
- Department of Cell, Molecular, and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, Massachusetts.,Department of Oral and Maxillofacial Pathology, School of Dentistry, School of Medicine, School of Engineering, Tufts University, Boston, Massachusetts
| | - Avi Smith
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine (UMMSOM), Miami, Florida
| | - Vanessa Yanez
- John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine (UMMSOM), Miami, Florida
| | | | - Robert S Kirsner
- Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine (UMMSOM), Wound Healing and Regenerative Medicine Research Program.,Wound Healing Clinical Research Program, UM Health System, Miami, Florida
| | - Jonathan A Garlick
- Department of Cell, Molecular, and Developmental Biology, Sackler School of Graduate Biomedical Sciences, Tufts University, Boston, Massachusetts.,Department of Oral and Maxillofacial Pathology, School of Dentistry, School of Medicine, School of Engineering, Tufts University, Boston, Massachusetts
| | - Marjana Tomic-Canic
- Department of Dermatology & Cutaneous Surgery, University of Miami Miller School of Medicine (UMMSOM), Wound Healing and Regenerative Medicine Research Program.,Wound Healing Clinical Research Program, UM Health System, Miami, Florida.,Human Genomics and Genetics Graduate Program, Tufts University, Boston, Massachusetts.,John P. Hussman Institute for Human Genomics, University of Miami Miller School of Medicine (UMMSOM), Miami, Florida
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33
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Chen SD, Sun XY, Niu W, Kong LM, He MJ, Fan HM, Li WS, Zhong AF, Zhang LY, Lu J. Correlation between the level of microRNA expression in peripheral blood mononuclear cells and symptomatology in patients with generalized anxiety disorder. Compr Psychiatry 2016; 69:216-24. [PMID: 27423364 DOI: 10.1016/j.comppsych.2016.05.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2015] [Revised: 04/05/2016] [Accepted: 05/06/2016] [Indexed: 11/28/2022] Open
Abstract
This study investigated the correlation between the level of microRNA expression in peripheral blood mononuclear cells (PBMCs) and symptomatology in patients with generalized anxiety disorder (GAD). MicroRNA array was performed in peripheral blood mononuclear cells (PBMCs) obtained from GAD patients with gender, age, ethnicity-matched healthy controls. Then real-time quantitative reverse transcription polymerase chain reaction (qRT-PCR) was used to verify the top 7 miRNAs with the highest fold-change values in 76 GAD patients and 39 healthy controls. It demonstrated that 5 miRNAs showed significantly differences in expression levels (P<0.01). These 5 GAD-associated miRNAs were finally selected into our study to analyze the association between the plasma level of miRNAs expression and symptomatology scores in Hamilton Anxiety Scale (HAMA). Results showed that the level of miR-4505 and miR-663 was negatively correlated with the total HAMA scores in GAD patients (r=0.2228, r=0.264 P<0.05). MiR-663 was selected into the regression equation of HAMA total scores and psychic anxiety symptomatology scores, and it could explain 5.3% of the HAMA total scores and 15.3% of the anxiety symptomatology scores. This study analyzed preliminarily possible circulating miRNAs expression changes in GAD patients, and the expression level of miR-663 highly correlated with psychic anxiety symptoms, further molecular mechanism of which needs to be explored.
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Affiliation(s)
- Sheng-Dong Chen
- Department of Psychiatry and Psychology, Second Military Medical University, Shanghai 200433, People's Republic of China; Department of Neurology, No.102 Hospital of Chinese People's Liberation Army, Changzhou, Jiangsu 213003, People's Republic of China
| | - Xin-Yang Sun
- Department of Psychiatry and Psychology, PingAn Health Cloud Company Ltd. of China, Shanghai 200030, People's Republic of China
| | - Wei Niu
- Department of Rehabilitation, No.102 Hospital of Chinese People's Liberation Army, Changzhou, Jiangsu 213003, People's Republic of China
| | - Ling-Ming Kong
- Prevention and Treatment Center for Psychological Diseases, No.102 Hospital of Chinese People's Liberation Army, Changzhou 213003, Jiangsu, People's Republic of China
| | - Ming-Jun He
- Prevention and Treatment Center for Psychological Diseases, No.102 Hospital of Chinese People's Liberation Army, Changzhou 213003, Jiangsu, People's Republic of China
| | - Hui-Min Fan
- Cadre Ward, Chengdu Military General Hospital, Chengdu, Sichuan 610083, People's Republic of China
| | - Wan-Shuai Li
- GoPath Diagnostic Laboratory Co. Ltd, No.801, Changwuzhong Road, Changzhou, Jiangsu 213164, People's Republic of China
| | - Ai-Fang Zhong
- Department of Laboratory, No.102 Hospital of Chinese People's Liberation Army, Changzhou, Jiangsu 213003, People's Republic of China
| | - Li-Yi Zhang
- Prevention and Treatment Center for Psychological Diseases, No.102 Hospital of Chinese People's Liberation Army, Changzhou 213003, Jiangsu, People's Republic of China.
| | - Jim Lu
- GoPath Diagnostic Laboratory Co. Ltd, No.801, Changwuzhong Road, Changzhou, Jiangsu 213164, People's Republic of China; GoPath Laboratories LLC, 1351 Barclay Blvd, Buffalo, Grove, IL 60089, United States.
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Joladarashi D, Garikipati VNS, Thandavarayan RA, Verma SK, Mackie AR, Khan M, Gumpert AM, Bhimaraj A, Youker KA, Uribe C, Suresh Babu S, Jeyabal P, Kishore R, Krishnamurthy P. Enhanced Cardiac Regenerative Ability of Stem Cells After Ischemia-Reperfusion Injury: Role of Human CD34+ Cells Deficient in MicroRNA-377. J Am Coll Cardiol 2016; 66:2214-2226. [PMID: 26564600 DOI: 10.1016/j.jacc.2015.09.009] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/17/2015] [Accepted: 09/02/2015] [Indexed: 12/20/2022]
Abstract
BACKGROUND MicroRNA (miR) dysregulation in the myocardium has been implicated in cardiac remodeling after injury or stress. OBJECTIVES The aim of this study was to explore the role of miR in human CD34(+) cell (hCD34(+)) dysfunction in vivo after transplantation into the myocardium under ischemia-reperfusion (I-R) conditions. METHODS In response to inflammatory stimuli, the miR array profile of endothelial progenitor cells was analyzed using a polymerase chain reaction-based miR microarray. miR-377 expression was assessed in myocardial tissue from human patients with heart failure (HF). We investigated the effect of miR-377 inhibition on an hCD34(+) cell angiogenic proteome profile in vitro and on cardiac repair and function after I-R injury in immunodeficient mice. RESULTS The miR array data from endothelial progenitor cells in response to inflammatory stimuli indicated changes in numerous miR, with a robust decrease in the levels of miR-377. Human cardiac biopsies from patients with HF showed significant increases in miR-377 expression compared with nonfailing control hearts. The proteome profile of hCD34(+) cells transfected with miR-377 mimics showed significant decrease in the levels of proangiogenic proteins versus nonspecific control-transfected cells. We also validated that serine/threonine kinase 35 is a target of miR-377 using a dual luciferase reporter assay. In a mouse model of myocardial I-R, intramyocardial transplantation of miR-377 silenced hCD34(+) cells in immunodeficient mice, promoting neovascularization (at 28 days, post-I-R) and lower interstitial fibrosis, leading to improved left ventricular function. CONCLUSIONS These findings indicate that HF increased miR-377 expression in the myocardium, which is detrimental to stem cell function, and transplantation of miR-377 knockdown hCD34(+) cells into ischemic myocardium promoted their angiogenic ability, attenuating left ventricular remodeling and cardiac fibrosis.
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Affiliation(s)
- Darukeshwara Joladarashi
- Department of Cardiovascular Sciences, Center for Cardiovascular Regeneration, Houston Methodist Research Institute, Houston, Texas
| | | | - Rajarajan A Thandavarayan
- Department of Cardiovascular Sciences, Center for Cardiovascular Regeneration, Houston Methodist Research Institute, Houston, Texas
| | - Suresh K Verma
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Alexander R Mackie
- Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, Illinois
| | - Mohsin Khan
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Anna M Gumpert
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Arvind Bhimaraj
- Houston Methodist DeBakey Heart & Vascular Center, Houston Methodist Hospital, Houston, Texas
| | - Keith A Youker
- Houston Methodist DeBakey Heart & Vascular Center, Houston Methodist Hospital, Houston, Texas
| | - Cesar Uribe
- Houston Methodist DeBakey Heart & Vascular Center, Houston Methodist Hospital, Houston, Texas
| | - Sahana Suresh Babu
- Department of Cardiovascular Sciences, Center for Cardiovascular Regeneration, Houston Methodist Research Institute, Houston, Texas
| | - Prince Jeyabal
- Department of Cardiovascular Sciences, Center for Cardiovascular Regeneration, Houston Methodist Research Institute, Houston, Texas
| | - Raj Kishore
- Center for Translational Medicine, Temple University School of Medicine, Philadelphia, Pennsylvania
| | - Prasanna Krishnamurthy
- Department of Cardiovascular Sciences, Center for Cardiovascular Regeneration, Houston Methodist Research Institute, Houston, Texas; Department of Cell and Developmental Biology, Department of Cardiothoracic Surgery, Weill Cornell Medical College, New York, New York.
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Pourrajab F, Vakili Zarch A, Hekmatimoghaddam S, Zare-Khormizi MR. MicroRNAs; easy and potent targets in optimizing therapeutic methods in reparative angiogenesis. J Cell Mol Med 2015; 19:2702-14. [PMID: 26416208 PMCID: PMC4687703 DOI: 10.1111/jcmm.12669] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Accepted: 07/15/2015] [Indexed: 12/14/2022] Open
Abstract
The age‐related senescence of adult tissues is associated with the decreased level of angiogenic capability and with the development of a degenerative disease such as atherosclerosis which thereafter result in the deteriorating function of multiple systems. Findings indicate that tissue senescence not only diminishes repair processes but also promotes atherogenesis, serving as a double‐edged sword in the development and prognosis of ischaemia‐associated diseases. Evidence evokes microRNAs (miRNAs) as molecular switchers that underlie cellular events in different tissues. Here, miRNAs would promote new potential targets for optimizing therapeutic methods in blood flow recovery to the ischaemic area. Effectively beginning an ischaemia therapy, a more characteristic of miRNA changes in adult tissues is prerequisite and in the forefront. It may also be a preliminary phase in treatment strategies by stem cell‐based therapy.
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Affiliation(s)
- Fatemeh Pourrajab
- School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.,Department of Clinical Biochemistry and Molecular Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Abbas Vakili Zarch
- School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Seyedhossein Hekmatimoghaddam
- Department of Laboratory Sciences, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Abdelmohsen K, Gorospe M. Noncoding RNA control of cellular senescence. WILEY INTERDISCIPLINARY REVIEWS-RNA 2015; 6:615-29. [PMID: 26331977 DOI: 10.1002/wrna.1297] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/11/2015] [Revised: 07/19/2015] [Accepted: 07/20/2015] [Indexed: 12/23/2022]
Abstract
Senescent cells accumulate in normal tissues with advancing age and arise by long-term culture of primary cells. Senescence develops following exposure to a range of stress-causing agents and broadly influences the physiology and pathology of tissues, organs, and systems in the body. While many proteins are known to control senescence, numerous noncoding (nc)RNAs are also found to promote or repress the senescent phenotype. Here, we review the regulatory ncRNAs (primarily microRNAs and lncRNAs) identified to-date as key modulators of senescence. We highlight the major senescent pathways (p53/p21 and pRB/p16), as well as the senescence-associated secretory phenotype (SASP) and other senescence-associated events governed by ncRNAs, and discuss the importance of understanding comprehensively the ncRNAs implicated in cell senescence.
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Affiliation(s)
- Kotb Abdelmohsen
- Laboratory of Genetics, National Institute on Aging-Intramural Research Program, National Institutes of Health, Baltimore, MD, USA
| | - Myriam Gorospe
- Laboratory of Genetics, National Institute on Aging-Intramural Research Program, National Institutes of Health, Baltimore, MD, USA
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Pourrajab F, Vakili Zarch A, Hekmatimoghaddam S, Zare-Khormizi MR. The master switchers in the aging of cardiovascular system, reverse senescence by microRNA signatures; as highly conserved molecules. PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY 2015; 119:111-28. [PMID: 26033200 DOI: 10.1016/j.pbiomolbio.2015.05.004] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2014] [Revised: 03/17/2015] [Accepted: 05/27/2015] [Indexed: 02/07/2023]
Abstract
The incidence of CVD increases with aging, because of long-term exposure to risk factors/stressors. Aging is a complex biological process resulting in progressive loss of physiological integrity, leading to impaired function and increased vulnerability to death. The main hallmarks of aging are cellular senescence, stem cell exhaustion, and altered intracellular communication. The major hallmarks of senescence are mitochondrial dysfunction, genomic instability, telomere attrition and epigenetic alterations, all of which contributing to cellular aging. Such events are controls by a family of small, non-coding RNAs (miRNAs) that interact with component of cellular senescence pathway; mitochondrial biogenesis/removal, DNA damage response machinery and IGF-1 signaling pathway. Here, we review recent in vivo/in vitro reports that miRNAs are key modulators of heart senescence, and act as master switchers to influence reprogramming pathway. We discuss evidence that abrupt deregulation of some mit-miRNAs governing senescence programs underlies age-associated CVD. In particular, due to the highly conserved nature and well-recognized target sites, miRNAs have been defined as master switchers in controlling heart progenitor cell biology. Modulation of mit-miRNA expression holds the great promise in switching off/on cellular senescence/reprogramming to rejuvenate stem cells to aid regenerative process.
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Affiliation(s)
- Fatemeh Pourrajab
- School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran; Department of Clinical Biochemistry and Molecular Biology, School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran.
| | - Abbas Vakili Zarch
- School of Medicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
| | - Seyedhossein Hekmatimoghaddam
- Department of Laboratory Sciences, School of Paramedicine, Shahid Sadoughi University of Medical Sciences, Yazd, Iran
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Kühnel H, Adilijiang A, Dadak A, Wieser M, Upur H, Stolze K, Grillari J, Strasser A. Investigations into cytotoxic effects of the herbal preparation Abnormal Savda Munziq. Chin J Integr Med 2015. [PMID: 25967604 DOI: 10.1007/s11655-015-2132-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2013] [Indexed: 12/18/2022]
Abstract
OBJECTIVE To evaluate the effects of Abnormal Savda Munziq (ASMq), a traditional herbal medicine, for the prevention and treatment of human diseases, e.g. bowel cancer. METHODS The parameters total polyphenol content, cell proliferation and DNA-damage as well as RNA and protein-oxidation were analysed in vitro. Besides, the expressions of miRNA and tumor suppressor genes as well as cellular senescence were evaluated. RESULTS ASMq had a high polyphenol content and induced damage to proteins, RNA as well as to DNA, which is correlated with its cytotoxicity. Furthermore ASMq up-regulated the tumor suppressor genes p21, p53 and p16 and down-regulated the micro-RNAs hsa-mir-17 and hsa-mir-106b. In addition cellular growth arrest and SA-β-gal-staining were induced. CONCLUSION ASMq has the ability to induce DNA damage and cellular senescence, which are double-edged mechanisms in fighting cancer, as they might also have harmful side effects.
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Affiliation(s)
- Harald Kühnel
- Department of Biomedical Sciences, Institute of Physiology, Pathophysiology and Biophysics, University of Veterinary Medicine Vienna, Vienna, A-1210, Austria
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Xiong XD, Jung HJ, Gombar S, Park JY, Zhang CL, Zheng H, Ruan J, Li JB, Kaeberlein M, Kennedy BK, Zhou Z, Liu X, Suh Y. MicroRNA transcriptome analysis identifies miR-365 as a novel negative regulator of cell proliferation in Zmpste24-deficient mouse embryonic fibroblasts. Mutat Res 2015; 777:69-78. [PMID: 25983189 DOI: 10.1016/j.mrfmmm.2015.04.010] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2015] [Revised: 04/08/2015] [Accepted: 04/16/2015] [Indexed: 02/01/2023]
Abstract
Zmpste24 is a metalloproteinase responsible for the posttranslational processing and cleavage of prelamin A into mature laminA. Zmpste24(-/-) mice display a range of progeroid phenotypes overlapping with mice expressing progerin, an altered version of lamin A associated with Hutchinson-Gilford progeria syndrome (HGPS). Increasing evidence has demonstrated that miRNAs contribute to the regulation of normal aging process, but their roles in progeroid disorders remain poorly understood. Here we report the miRNA transcriptomes of mouse embryonic fibroblasts (MEFs) established from wild type (WT) and Zmpste24(-/-) progeroid mice using a massively parallel sequencing technology. With data from 19.5 × 10(6) reads from WT MEFs and 16.5 × 10(6) reads from Zmpste24(-/-) MEFs, we discovered a total of 306 known miRNAs expressed in MEFs with a wide dynamic range of read counts ranging from 10 to over 1 million. A total of 8 miRNAs were found to be significantly down-regulated, with only 2 miRNAs upregulated, in Zmpste24(-/-) MEFs as compared to WT MEFs. Functional studies revealed that miR-365, a significantly down-regulated miRNA in Zmpste24(-/-) MEFs, modulates cellular growth phenotypes in MEFs. Overexpression of miR-365 in Zmpste24(-/-) MEFs increased cellular proliferation and decreased the percentage of SA-β-gal-positive cells, while inhibition of miR-365 function led to an increase of SA-β-gal-positive cells in WT MEFs. Furthermore, we identified Rasd1, a member of the Ras superfamily of small GTPases, as a functional target of miR-365. While expression of miR-365 suppressed Rasd1 3' UTR luciferase-reporter activity, this effect was lost with mutations in the putative 3' UTR target-site. Consistently, expression levels of miR-365 were found to inversely correlate with endogenous Rasd1 levels. These findings suggest that miR-365 is down-regulated in Zmpste24(-/-) MEFs and acts as a novel negative regulator of Rasd1. Our comprehensive miRNA data provide a resource to study gene regulatory networks in MEFs.
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Affiliation(s)
- Xing-dong Xiong
- Institute of Aging Research, Guangdong Medical College, Xin Cheng Avenue 1#, Songshan Lake, Dongguan, Guangdong 523808, PR China; Institute of Biochemistry & Molecular Biology, Guangdong Medical College, Zhanjiang 524023, PR China; Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan 523808, PR China; Institute of Laboratory Medicine, Guangdong Medical College, Dongguan, Guangdong 523808, PR China
| | - Hwa Jin Jung
- Departments of Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Saurabh Gombar
- Departments of Systems Biology, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Jung Yoon Park
- Departments of Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Chun-long Zhang
- Institute of Aging Research, Guangdong Medical College, Xin Cheng Avenue 1#, Songshan Lake, Dongguan, Guangdong 523808, PR China; Institute of Biochemistry & Molecular Biology, Guangdong Medical College, Zhanjiang 524023, PR China; Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan 523808, PR China
| | - Huiling Zheng
- Institute of Aging Research, Guangdong Medical College, Xin Cheng Avenue 1#, Songshan Lake, Dongguan, Guangdong 523808, PR China; Institute of Biochemistry & Molecular Biology, Guangdong Medical College, Zhanjiang 524023, PR China; Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan 523808, PR China
| | - Jie Ruan
- Institute of Aging Research, Guangdong Medical College, Xin Cheng Avenue 1#, Songshan Lake, Dongguan, Guangdong 523808, PR China; Institute of Biochemistry & Molecular Biology, Guangdong Medical College, Zhanjiang 524023, PR China; Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan 523808, PR China; Institute of Laboratory Medicine, Guangdong Medical College, Dongguan, Guangdong 523808, PR China
| | - Jiang-bin Li
- Institute of Aging Research, Guangdong Medical College, Xin Cheng Avenue 1#, Songshan Lake, Dongguan, Guangdong 523808, PR China; Institute of Biochemistry & Molecular Biology, Guangdong Medical College, Zhanjiang 524023, PR China; Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan 523808, PR China; Institute of Laboratory Medicine, Guangdong Medical College, Dongguan, Guangdong 523808, PR China
| | - Matt Kaeberlein
- Institute of Aging Research, Guangdong Medical College, Xin Cheng Avenue 1#, Songshan Lake, Dongguan, Guangdong 523808, PR China; Department of Pathology, University of Washington, Seattle, WA 98195, USA
| | - Brian K Kennedy
- Institute of Aging Research, Guangdong Medical College, Xin Cheng Avenue 1#, Songshan Lake, Dongguan, Guangdong 523808, PR China; The Buck Institute for Research on Aging, Novato, CA 94945, USA
| | - Zhongjun Zhou
- Institute of Aging Research, Guangdong Medical College, Xin Cheng Avenue 1#, Songshan Lake, Dongguan, Guangdong 523808, PR China; Department of Biochemistry, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - Xinguang Liu
- Institute of Aging Research, Guangdong Medical College, Xin Cheng Avenue 1#, Songshan Lake, Dongguan, Guangdong 523808, PR China; Institute of Biochemistry & Molecular Biology, Guangdong Medical College, Zhanjiang 524023, PR China; Key Laboratory for Medical Molecular Diagnostics of Guangdong Province, Dongguan 523808, PR China; Institute of Laboratory Medicine, Guangdong Medical College, Dongguan, Guangdong 523808, PR China.
| | - Yousin Suh
- Institute of Aging Research, Guangdong Medical College, Xin Cheng Avenue 1#, Songshan Lake, Dongguan, Guangdong 523808, PR China; Departments of Genetics, Albert Einstein College of Medicine, Bronx, NY 10461, USA.
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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] [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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Röck K, Tigges J, Sass S, Schütze A, Florea AM, Fender AC, Theis FJ, Krutmann J, Boege F, Fritsche E, Reifenberger G, Fischer JW. miR-23a-3p Causes Cellular Senescence by Targeting Hyaluronan Synthase 2: Possible Implication for Skin Aging. J Invest Dermatol 2015; 135:369-377. [DOI: 10.1038/jid.2014.422] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2013] [Revised: 08/27/2014] [Accepted: 08/29/2014] [Indexed: 12/13/2022]
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Effect of culture conditions on microRNA expression in primary adult control and COPD lung fibroblasts in vitro. In Vitro Cell Dev Biol Anim 2015; 51:390-9. [PMID: 25552310 DOI: 10.1007/s11626-014-9820-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2014] [Accepted: 09/08/2014] [Indexed: 12/27/2022]
Abstract
In vitro cell cultures, including lung fibroblasts, have been used to identify microRNAs (miRNAs) associated with chronic obstructive pulmonary disease (COPD) pathogenesis. However, culture conditions may affect miRNA expression. We examined whether miRNA expression in primary adult lung fibroblasts varies with cell density or passage in vitro and whether culture conditions confound the identification of altered miRNA expression in COPD lung fibroblasts. Primary adult control and COPD lung fibroblasts were cultured until passage 3 or 8, after which cells were further cultured for 3 or 7 d (low vs. high density). Then, cells at low density were cultured with serum-free media, and those at high density were cultured with serum-free media in the absence or presence of interleukin-1β (IL-1β) and tumor necrosis factor alpha (TNF-α) for 24 h. RNA was extracted to perform miRNA microarray from which 1.25-fold differential expression and 10% false discovery rate were applied to identify "invariant" and "variant" miRNA for the various culture conditions. Of the 2226 miRNAs evaluated, 39.0% for cell density, 40.7% for cell passage, and 29.4% for both conditions were identified as "invariant" miRNAs. Furthermore, 38.1% of the evaluated miRNAs were "invariant" for cell passage with IL-1β and TNF-α. Differentially expressed miRNAs between control and COPD lung fibroblasts were identified with and without IL-1β and TNF-α, and of these, 32 out of the 34 top-ranked miRNAs exceeded the differences due to culture conditions. Thus, culture conditions may affect miRNA expression of adult human lung fibroblasts. Nevertheless, in vitro cultures can be used to assess differential miRNA expression in COPD lung fibroblasts.
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Are there roles for brain cell senescence in aging and neurodegenerative disorders? Biogerontology 2014; 15:643-60. [PMID: 25305051 DOI: 10.1007/s10522-014-9532-1] [Citation(s) in RCA: 81] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 09/13/2014] [Indexed: 12/30/2022]
Abstract
The term cellular senescence was introduced more than five decades ago to describe the state of growth arrest observed in aging cells. Since this initial discovery, the phenotypes associated with cellular senescence have expanded beyond growth arrest to include alterations in cellular metabolism, secreted cytokines, epigenetic regulation and protein expression. Recently, senescence has been shown to play an important role in vivo not only in relation to aging, but also during embryonic development. Thus, cellular senescence serves different purposes and comprises a wide range of distinct phenotypes across multiple cell types. Whether all cell types, including post-mitotic neurons, are capable of entering into a senescent state remains unclear. In this review we examine recent data that suggest that cellular senescence plays a role in brain aging and, notably, may not be limited to glia but also neurons. We suggest that there is a high level of similarity between some of the pathological changes that occur in the brain in Alzheimer's and Parkinson's diseases and those phenotypes observed in cellular senescence, leading us to propose that neurons and glia can exhibit hallmarks of senescence previously documented in peripheral tissues.
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Dhahbi JM. Circulating small noncoding RNAs as biomarkers of aging. Ageing Res Rev 2014; 17:86-98. [PMID: 24607831 DOI: 10.1016/j.arr.2014.02.005] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2014] [Revised: 02/17/2014] [Accepted: 02/24/2014] [Indexed: 12/31/2022]
Abstract
Small noncoding RNAs (sncRNAs) mediate a variety of cellular functions in animals and plants. Deep sequencing has made it possible to obtain highly detailed information on the types and abundance of sncRNAs in biological specimens, leading to the discovery that sncRNAs circulate in the blood of humans and mammals. The most abundant types of circulating sncRNAs are microRNAs (miRNAs), 5' transfer RNA (tRNA) halves, and YRNA fragments, with minute amounts of other types that may nevertheless be significant. Of the more abundant circulating sncRNAs only miRNAs have well described functions, but characteristics of the others suggest specific processing and secretion as complexes that protect the RNA from degradation. The properties of circulating sncRNAs are consistent with their serving as signaling molecules, and investigations of circulating miRNAs support the view that they can enter cells and regulate cellular functions. The serum levels of specific sncRNAs change markedly with age, and these changes can be mitigated by calorie restriction (CR), indicating that levels are under physiologic control. The ability of circulating sncRNAs to transmit functions between cells and to regulate a broad spectrum of cellular functions, and the changes in their levels with age, implicate them in the manifestations of aging. Our understanding of the functions of circulating sncRNA, particularly in relation to aging, is currently at a very early stage; results to date suggest that more extensive investigation will yield important insights into mechanisms of aging.
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Affiliation(s)
- Joseph M Dhahbi
- Department of Biochemistry, University of California at Riverside, Riverside, CA 92521, USA; Center for Genetics, Children's Hospital Oakland Research Institute, Oakland, CA 94609, USA.
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Zagryazhskaya A, Zhivotovsky B. miRNAs in lung cancer: a link to aging. Ageing Res Rev 2014; 17:54-67. [PMID: 24631464 DOI: 10.1016/j.arr.2014.02.009] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2013] [Revised: 02/28/2014] [Accepted: 02/28/2014] [Indexed: 02/07/2023]
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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Yoo JK, Kim CH, Jung HY, Lee DR, Kim JK. Discovery and characterization of miRNA during cellular senescence in bone marrow-derived human mesenchymal stem cells. Exp Gerontol 2014; 58:139-45. [PMID: 25087724 DOI: 10.1016/j.exger.2014.07.020] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Revised: 07/24/2014] [Accepted: 07/25/2014] [Indexed: 12/18/2022]
Abstract
Cellular senescence is an irreversible cell cycle arrest in which specific mRNAs and miRNAs are involved in senescence progression. miRNAs interact with specific mRNAs to regulate various cellular mechanisms, including metabolism, proliferation, apoptosis, senescence and differentiation. In this study, we identify and characterize miRNAs during cellular senescence in mesenchymal stem cells (MSCs). Using previously reported miRNAs, expression profiling of 23 miRNAs was performed using real-time PCR analysis. Among these miRNAs, 19 miRNAs showed upregulated expression patterns in senescent MSCs compared with young MSCs, and 5 miRNAs were downregulated. These miRNAs have not been previously identified as being related to cellular senescence but seem to be related. miR-103-2*, miR-140-5p and miR-330-5p are highly upregulated, while miR-29b and miR-199b-5p are significantly downregulated in senescent MSCs. We identify unique functions of 5 miRNAs and predict putative target genes of 5 miRNAs using our previous report. Among them, miR-199b-5p directly suppressed LAMC1 expression, as shown in a luciferase assay. miR-199b-5p significantly regulates translational activity but does not control post-transcriptional activity. Likewise, miR-199b-5p modulates LAMC networks, which demonstrates the resulting phenomenon during cellular senescence, namely, that miR-199b-5p indirectly regulates cellular senescence in MSCs.
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Affiliation(s)
- Jung Ki Yoo
- Department of Pharmacy, College of Pharmacy, CHA University, 222 Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-836, Republic of Korea
| | - Chang-Hyun Kim
- College of Medicine, Dongguk Ilsan Hospital, Gyeonggi-do 410-773, Republic of Korea
| | - Ho Yong Jung
- Department of Pharmacy, College of Pharmacy, CHA University, 222 Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-836, Republic of Korea
| | - Dong Ryul Lee
- Fertility Center of CHA Gangnam Medical Center, College of Medicine, CHA University, 606-5 Yeoksam-dong, Gangnam-gu, Seoul 135-081, Republic of Korea.
| | - Jin Kyeoung Kim
- Department of Pharmacy, College of Pharmacy, CHA University, 222 Yatap-dong, Bundang-gu, Seongnam-si, Gyeonggi-do 463-836, Republic of Korea.
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Farrokhnia F, Aplin JD, Westwood M, Forbes K. MicroRNA regulation of mitogenic signaling networks in the human placenta. J Biol Chem 2014; 289:30404-30416. [PMID: 25077964 DOI: 10.1074/jbc.m114.587295] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Placental cell growth depends on an adaptable combination of an endogenous developmental program and the exogenous influence of maternal growth factors, both of which may be influenced by microRNA (miR)-dependent effects on gene expression. We have previously shown that global miR suppression in placenta accelerates proliferation and enhances levels of growth factor signaling mediators in cytotrophoblast. This study aimed to identify miRs involved in regulating placental growth. An initial array revealed 58 miR species whose expression differs between first trimester, when cytotrophoblast proliferation is rapid, and term, by which time proliferation has slowed. In silico analysis defined potential growth-regulatory miRs; among these, hsa-miR-145, hsa-miR-377, and hsa-let-7a were predicted to target known placental growth genes and were higher at term than in the first trimester, so they were selected for further analysis. Overexpression of miR-377 and let-7a, but not miR-145, in first trimester placental explants significantly reduced basal cytotrophoblast proliferation and expression of ERK and MYC. PCR arrays, in silico analysis, Western blotting, and 3'-UTR luciferase reporter assays revealed targets of miR-145 within the insulin-like growth factor axis. Analysis of proliferation in placental explants overexpressing miR-145 demonstrated its role as a mediator of insulin-like growth factor-induced trophoblast proliferation. These findings identify miR-377 and let-7a in regulation of endogenous cell growth and miR-145 in the placental response to maternal stimulation and will aid the development of therapeutic strategies for problem pregnancies.
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Affiliation(s)
- Farkhondeh Farrokhnia
- Maternal and Fetal Health Research Centre, Institute of Human Development, University of Manchester, Manchester M13 9WL, United Kingdom and; St. Mary's Hospital, Central Manchester University Hospitals National Health Service Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9WL, United Kingdom
| | - John D Aplin
- Maternal and Fetal Health Research Centre, Institute of Human Development, University of Manchester, Manchester M13 9WL, United Kingdom and; St. Mary's Hospital, Central Manchester University Hospitals National Health Service Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9WL, United Kingdom
| | - Melissa Westwood
- Maternal and Fetal Health Research Centre, Institute of Human Development, University of Manchester, Manchester M13 9WL, United Kingdom and; St. Mary's Hospital, Central Manchester University Hospitals National Health Service Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9WL, United Kingdom
| | - Karen Forbes
- Maternal and Fetal Health Research Centre, Institute of Human Development, University of Manchester, Manchester M13 9WL, United Kingdom and; St. Mary's Hospital, Central Manchester University Hospitals National Health Service Foundation Trust, Manchester Academic Health Science Centre, Manchester M13 9WL, United Kingdom.
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48
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Arancio W, Pizzolanti G, Genovese SI, Baiamonte C, Giordano C. Competing Endogenous RNA and Interactome Bioinformatic Analyses on Human Telomerase. Rejuvenation Res 2014; 17:161-7. [DOI: 10.1089/rej.2013.1486] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Affiliation(s)
- Walter Arancio
- Dipartimento Biomedico di Medicina Interna e Specialistica (Biomedical Department of Internal and Specialized Medicine), University of Palermo, Palermo, Italy
| | - Giuseppe Pizzolanti
- Dipartimento Biomedico di Medicina Interna e Specialistica (Biomedical Department of Internal and Specialized Medicine), University of Palermo, Palermo, Italy
| | | | - Concetta Baiamonte
- Dipartimento Biomedico di Medicina Interna e Specialistica (Biomedical Department of Internal and Specialized Medicine), University of Palermo, Palermo, Italy
| | - Carla Giordano
- Dipartimento Biomedico di Medicina Interna e Specialistica (Biomedical Department of Internal and Specialized Medicine), University of Palermo, Palermo, Italy
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Waaijer MEC, Wieser M, Grillari-Voglauer R, van Heemst D, Grillari J, Maier AB. MicroRNA-663 induction upon oxidative stress in cultured human fibroblasts depends on the chronological age of the donor. Biogerontology 2014; 15:269-78. [PMID: 24664125 DOI: 10.1007/s10522-014-9496-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Accepted: 03/06/2014] [Indexed: 12/22/2022]
Abstract
MicroRNAs, regulators of messenger RNA translation, have been observed to influence many physiological processes, amongst them the process of aging. Higher levels of microRNA-663 (miR-663) have previously been observed in human dermal fibroblasts subject to both replicative and stress-induced senescence compared to early passage cells. Also, higher levels of miR-663 have been found in memory T-cells and in human fibroblasts derived from older donors compared to younger donors. In previous studies we observed that dermal fibroblasts from donors of different chronological and biological age respond differentially to oxidative stress measured by markers of cellular senescence and apoptosis. In the present study we set out to study the association between miR-663 levels and chronological and biological age. Therefore we tested in a total of 92 human dermal fibroblast strains whether the levels of miR-663 in non-stressed and stressed conditions (fibroblasts were treated with 0.6 μM rotenone in stressed conditions) were different in young, middle aged and old donors and whether they were different in middle aged donors dependent on their biological age, as indicated by the propensity for familial longevity. In non-stressed conditions the level of miR-663 did not differ between donors of different age categories and was not dependent on biological age. Levels of miR-663 did not differ dependent on biological age in stressed conditions either. However, for different age categories the level of miR-663 in stressed conditions did differ: the level of miR-663 was higher at higher age categories. Also, the ratio of miR-663 induction upon stress was significantly higher in donors from older age categories. In conclusion, we present evidence for an association of miR-663 upon stress and chronological age.
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Affiliation(s)
- Mariëtte E C Waaijer
- Department of Gerontology and Geriatrics, Leiden University Medical Center, 2300 RC, Leiden, The Netherlands
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Christenson SA, Brandsma CA, Campbell JD, Knight DA, Pechkovsky DV, Hogg JC, Timens W, Postma DS, Lenburg M, Spira A. miR-638 regulates gene expression networks associated with emphysematous lung destruction. Genome Med 2013; 5:114. [PMID: 24380442 PMCID: PMC3971345 DOI: 10.1186/gm519] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2013] [Accepted: 12/20/2013] [Indexed: 12/21/2022] Open
Abstract
Background Chronic obstructive pulmonary disease (COPD) is a heterogeneous disease characterized by varying degrees of emphysematous lung destruction and small airway disease, each with distinct effects on clinical outcomes. There is little known about how microRNAs contribute specifically to the emphysema phenotype. We examined how genome-wide microRNA expression is altered with regional emphysema severity and how these microRNAs regulate disease-associated gene expression networks. Methods We profiled microRNAs in different regions of the lung with varying degrees of emphysema from 6 smokers with COPD and 2 controls (8 regions × 8 lungs = 64 samples). Regional emphysema severity was quantified by mean linear intercept. Whole genome microRNA and gene expression data were integrated in the same samples to build co-expression networks. Candidate microRNAs were perturbed in human lung fibroblasts in order to validate these networks. Results The expression levels of 63 microRNAs (P < 0.05) were altered with regional emphysema. A subset, including miR-638, miR-30c, and miR-181d, had expression levels that were associated with those of their predicted mRNA targets. Genes correlated with these microRNAs were enriched in pathways associated with emphysema pathophysiology (for example, oxidative stress and accelerated aging). Inhibition of miR-638 expression in lung fibroblasts led to modulation of these same emphysema-related pathways. Gene targets of miR-638 in these pathways were amongst those negatively correlated with miR-638 expression in emphysema. Conclusions Our findings demonstrate that microRNAs are altered with regional emphysema severity and modulate disease-associated gene expression networks. Furthermore, miR-638 may regulate gene expression pathways related to the oxidative stress response and aging in emphysematous lung tissue and lung fibroblasts.
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Affiliation(s)
- Stephanie A Christenson
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street Boston, MA 02118, USA ; Department of Pulmonary and Critical Care Medicine, University of California, San Francisco, 513 Parnassus Ave, San Francisco, CA 94143, USA
| | - Corry-Anke Brandsma
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 Groningen, Netherlands ; University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Hanzeplein 1, 9713 Groningen, Netherlands
| | - Joshua D Campbell
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street Boston, MA 02118, USA ; Bioinformatics Program, Boston University, 44 Cummington Street Boston, MA 02215, USA
| | - Darryl A Knight
- UBC James Hogg Research Centre, Institute for Heart and Lung Health, St Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St Vancouver, BC V6Z 1Y6, Canada ; School of Biomedical Sciences and Pharmacy, University of Newcastle, University Drive Callaghan, New South Wales 2308, Australia
| | - Dmitri V Pechkovsky
- UBC James Hogg Research Centre, Institute for Heart and Lung Health, St Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St Vancouver, BC V6Z 1Y6, Canada ; Respiratory Division, Department of Medicine, University of British Columbia, The Jack Bell Research Center, 2660 Oak Street Vancouver, BC V6H 3Z6, Canada
| | - James C Hogg
- UBC James Hogg Research Centre, Institute for Heart and Lung Health, St Paul's Hospital and Department of Pathology and Laboratory Medicine, University of British Columbia, 1081 Burrard St Vancouver, BC V6Z 1Y6, Canada
| | - Wim Timens
- Department of Pathology and Medical Biology, University Medical Center Groningen, University of Groningen, Hanzeplein 1, 9713 Groningen, Netherlands ; University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Hanzeplein 1, 9713 Groningen, Netherlands
| | - Dirkje S Postma
- University of Groningen, University Medical Center Groningen, Groningen Research Institute for Asthma and COPD (GRIAC), Hanzeplein 1, 9713 Groningen, Netherlands ; Department of Pulmonary Diseases, University of Groningen, University Medical Center Groningen, Hanzeplein 1, 9713 Groningen, Netherlands
| | - Marc Lenburg
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street Boston, MA 02118, USA ; Bioinformatics Program, Boston University, 44 Cummington Street Boston, MA 02215, USA
| | - Avrum Spira
- Division of Computational Biomedicine, Department of Medicine, Boston University School of Medicine, 72 East Concord Street Boston, MA 02118, USA ; Bioinformatics Program, Boston University, 44 Cummington Street Boston, MA 02215, USA
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