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Coban N, Erkan AF, Ozuynuk-Ertugrul AS, Ekici B. Investigation of miR-26a-5p and miR-19a-3p expression levels in angiographically confirmed coronary artery disease. Acta Cardiol 2023; 78:945-956. [PMID: 37376990 DOI: 10.1080/00015385.2023.2227484] [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: 11/03/2022] [Revised: 05/31/2023] [Accepted: 06/11/2023] [Indexed: 06/29/2023]
Abstract
BACKGROUND MicroRNAs have been found to have an essential role in cardiovascular diseases. In previous experiments, the changed expressions of miR-26a-5p and miR-19a-3p were confirmed in patients with severe coronary atherosclerosis by miRNA microarrays. However, the role of two miRNAs in coronary artery diseases (CAD) still needs to be investigated further. Our current study aimed to analyse two miRNAs in angiographically confirmed CAD and non-CAD with insignificant coronary stenosis. This study aimed to identify the potential diagnostic value of circulating miRNA with CAD. METHODS The CAD patients (n = 50) and non-CAD controls (n = 43) were studied. miRNAs (miR-26a-5p and miR-19a-3p) were quantified by TaqMan miRNA assays using real-time PCR. We subsequently assessed the diagnostic value of the miRNAs and correlations of miRNA with clinical parameters. Target prediction tools were utilised to identify miRNA target genes. RESULTS The expression of miR-26a-5p was significantly increased in CAD compared to non-CAD controls (p < 0.05). Tertile groups were formed according to the expression levels of miRNAs, and high expression tertile (T3) was compared with low expression tertile (T1). It was found that CAD presence was more prevalent in T3 of miR-26a-5p, and the frequency of diabetes was higher in T3 of miR-19a-3p. There were significant correlations between miRNAs and diabetes risk factors such as HbA1c, glucose levels, and BMI (p < 0.05). CONCLUSIONS Our findings show that miR-26a-5p expression is altered in CAD presence while miR-19a-3p expression is different in diabetes. Both miRNAs are closely related to risk factors of CAD, therefore, could be therapeutic targets for CAD treatment.
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Affiliation(s)
- Neslihan Coban
- Department of Genetics, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
| | - Aycan F Erkan
- Department of Cardiology, Faculty of Medicine, Ufuk University, Ankara, Turkey
| | - Aybike Sena Ozuynuk-Ertugrul
- Department of Genetics, Aziz Sancar Institute of Experimental Medicine, Istanbul University, Istanbul, Turkey
- Istanbul University Institute of Graduate Studies in Health Sciences, Istanbul, Turkey
| | - Berkay Ekici
- Department of Cardiology, Faculty of Medicine, Ufuk University, Ankara, Turkey
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2
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Jin J, Li F, Fan C, Wu Y, He C. Elevated mir-145-5p is associated with skeletal muscle dysfunction and triggers apoptotic cell death in C2C12 myotubes. J Muscle Res Cell Motil 2022; 43:135-145. [PMID: 35753017 DOI: 10.1007/s10974-022-09624-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Accepted: 06/06/2022] [Indexed: 11/25/2022]
Abstract
Skeletal muscle dysfunction is a common comorbidity of chronic obstructive pulmonary disease (COPD), and the molecular mechanisms regarding to the pathogenesis of this disease have not been elucidated. In this study, a novel miR-145-5p was significantly upregulated in the serum collected from patients with COPD-associated muscle atrophy, in contrast with the normal participants. Then, we evidenced that silencing of miR-145-5p suppressed cell death and elongated cell survival during cell culture process. Consistently, upregulation of miR-145-5p induced cell apoptosis and restrain cell viability in the C2C12 cells, suggesting that miR-145-5p contributes to cell death. Further experiments evidenced that miR-145-5p decreased the expression levels of phosphorylated PI3K (p-PI3K), Akt (p-Akt) and mTOR (p-mTOR) to inactivate the PI3K/Akt/mTOR pathway, and this pathway was also reactivated by miR-145-5p ablation. Finally, we proved that the protective effects of miR-145-5p ablation were abrogated by co-treating cells with PI3K inhibitor LY294002. Taken together, we concluded that miR-145-5p promoted cell death to facilitate muscle dysfunctions via inactivating the PI3K/Akt/mTOR pathway.
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Affiliation(s)
- Jing Jin
- Department of TCM, First Affiliated Hospital of Xinjiang Medical University, No. 137, Liyushan South Road, Xinshi District, Urumqi, 830011, Xinjiang, China
| | - Fanyi Li
- Department of TCM, First Affiliated Hospital of Xinjiang Medical University, No. 137, Liyushan South Road, Xinshi District, Urumqi, 830011, Xinjiang, China
| | - Caihong Fan
- Department of TCM, First Affiliated Hospital of Xinjiang Medical University, No. 137, Liyushan South Road, Xinshi District, Urumqi, 830011, Xinjiang, China
| | - Yu Wu
- Department of TCM, First Affiliated Hospital of Xinjiang Medical University, No. 137, Liyushan South Road, Xinshi District, Urumqi, 830011, Xinjiang, China
| | - Chunhui He
- Department of TCM, First Affiliated Hospital of Xinjiang Medical University, No. 137, Liyushan South Road, Xinshi District, Urumqi, 830011, Xinjiang, China.
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Di Felice V, Coletti D, Seelaender M. Editorial: Myokines, Adipokines, Cytokines in Muscle Pathophysiology, Volume II. Front Physiol 2022; 13:907956. [PMID: 35707006 PMCID: PMC9189995 DOI: 10.3389/fphys.2022.907956] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2022] [Accepted: 04/11/2022] [Indexed: 11/25/2022] Open
Affiliation(s)
- Valentina Di Felice
- Department of Biomedicine, Neurosciences and Advanced Diagnostics, University of Palermo, Palermo, Italy
| | - Dario Coletti
- Sorbonne Université, Institut de Biologie Paris-Seine, (IBPS), CNRS UMR 8256, Inserm ERL U1164, Biological Adaptation and Ageing, Paris, France.,Department of Anatomical, Histological, Forensic Sciences and Orthopedics, Sapienza University of Rome, Rome, Italy.,Department of Anatomical, Histological, Forensic Sciences and Orthopedics, Interuniversity Institute of Myology, Rome, Italy
| | - Marilia Seelaender
- Department of Surgery, Cancer Metabolism Research Group, LIM 26-HC, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
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MiR-199-3p enhances muscle regeneration and ameliorates aged muscle and muscular dystrophy. Commun Biol 2021; 4:427. [PMID: 33782502 PMCID: PMC8007565 DOI: 10.1038/s42003-021-01952-2] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Accepted: 03/02/2021] [Indexed: 12/14/2022] Open
Abstract
Parabiosis experiments suggest that molecular factors related to rejuvenation and aging circulate in the blood. Here, we show that miR-199-3p, which circulates in the blood as a cell-free miRNA, is significantly decreased in the blood of aged mice compared to young mice; and miR-199-3p has the ability to enhance myogenic differentiation and muscle regeneration. Administration of miR-199 mimics, which supply miR-199-3p, to aged mice resulted in muscle fiber hypertrophy and delayed loss of muscle strength. Systemic administration of miR-199 mimics to mdx mice, a well-known animal model of Duchenne muscular dystrophy (DMD), markedly improved the muscle strength of mice. Taken together, cell-free miR-199-3p in the blood may have an anti-aging effect such as a hypertrophic effect in aged muscle fibers and could have potential as a novel RNA therapeutic for DMD as well as age-related diseases. The findings provide us with new insights into blood-circulating miRNAs as age-related molecules.
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Lei D, Sun H, Zhang B. MiR-24 Promotes Cell Growth in Human Glioma by CDX1/PI3K/Akt Signaling Pathway. Cancer Biother Radiopharm 2020; 36:588-599. [PMID: 32876500 DOI: 10.1089/cbr.2020.3711] [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: 11/13/2022] Open
Abstract
MicroRNA-24 (miR-24) has been identified to be related to the development of glioma. However, the exact molecular mechanism of miR-24 in glioma progression remains vague. The aim of the present study was to investigate the role of miR-24 in sepsis and to reveal the associated mechanisms. Quantitative real-time polymerase chain reaction was used to compare the levels of miR-24 in glioma and normal tissue. The miR-24 inhibitor or miR-24 mimic was transfected into glioma cells, and then the effects of miR-24 on cell proliferation and apoptosis were detected using CCK-8 (Cell Counting Kit-8) assay and flow cytometry, respectively. Western blot was used to examine the levels of CDX1 (caudal-type homeobox 1), PI3K, p-PI3K, Akt, p-Akt, Cyclin D1, p27, proliferating cell nuclear antigen, Bcl-2, Bax, and Cleaved-casp3. Luciferase assay was used to identify the target gene of miR-24. An animal model was established in mice to detect the role of miR-24 in vivo. These results suggested that miR-24 was elevated in glioma, and miR-24 could promote glioma progression by facilitating cell proliferation and inducing cell apoptosis through CDX1/PI3K/Akt signaling pathway, indicating a novel pathway underlying progression in glioma cells and providing a potential target for glioma treatment.
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Affiliation(s)
- Dan Lei
- Department of Neurosurgery, Hanyang Hospital Affiliated to Wuhan University of Science and Technology, Wuhan, China
| | - Huanhuan Sun
- Department of Head, Neck and Thoracic Tumor Surgery, Pu'ai Campus, Central Hospital of Huangshi, Huangshi, China
| | - Bo Zhang
- Second Department of Breast Tumor, Pu'ai Campus, Central Hospital of Huangshi, Huangshi, China
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Xu Q, Wu N, Cui L, Wu Z, Qiu G. Filamin B: The next hotspot in skeletal research? J Genet Genomics 2017; 44:335-342. [PMID: 28739045 DOI: 10.1016/j.jgg.2017.04.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2017] [Revised: 03/15/2017] [Accepted: 04/12/2017] [Indexed: 12/19/2022]
Abstract
Filamin B (FLNB) is a large dimeric actin-binding protein which crosslinks actin cytoskeleton filaments into a dynamic structure. Up to present, pathogenic mutations in FLNB are solely found to cause skeletal deformities, indicating the important role of FLNB in skeletal development. FLNB-related disorders are classified as spondylocarpotarsal synostosis (SCT), Larsen syndrome (LS), atelosteogenesis (AO), boomerang dysplasia (BD), and isolated congenital talipes equinovarus, presenting with scoliosis, short-limbed dwarfism, clubfoot, joint dislocation and other unique skeletal abnormalities. Several mechanisms of FLNB mutations causing skeletal malformations have been proposed, including delay of ossification in long bone growth plate, reduction of bone mineral density (BMD), dysregulation of muscle differentiation, ossification of intervertebral disc (IVD), disturbance of proliferation, differentiation and apoptosis in chondrocytes, impairment of angiogenesis, and hypomotility of osteoblast, chondrocyte and fibroblast. Interventions on FLNB-related diseases require prenatal surveillance by sonography, gene testing in high-risk carriers, and proper orthosis or orthopedic surgeries to correct malformations including scoliosis, cervical spine instability, large joint dislocation, and clubfoot. Gene and cell therapies for FLNB-related diseases are also promising but require further studies.
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Affiliation(s)
- Qiming Xu
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Nan Wu
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China; Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing 100730, China; Medical Research Center of Orthopaedics, Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Lijia Cui
- Peking Union Medical College Hospital, Beijing 100730, China; School of Medicine, Tsinghua University, Beijing 100084, China
| | - Zhihong Wu
- Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing 100730, China; Medical Research Center of Orthopaedics, Chinese Academy of Medical Sciences, Beijing 100730, China; Department of Central Laboratory, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China
| | - Guixing Qiu
- Department of Orthopaedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing 100730, China; Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing 100730, China; Medical Research Center of Orthopaedics, Chinese Academy of Medical Sciences, Beijing 100730, China.
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7
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Circulating miR-221-3p as a novel marker for early prediction of acute myocardial infarction. Gene 2016; 591:90-96. [DOI: 10.1016/j.gene.2016.06.059] [Citation(s) in RCA: 60] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2016] [Revised: 06/10/2016] [Accepted: 06/28/2016] [Indexed: 01/06/2023]
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Boisguérin P, Deshayes S, Gait MJ, O'Donovan L, Godfrey C, Betts CA, Wood MJA, Lebleu B. Delivery of therapeutic oligonucleotides with cell penetrating peptides. Adv Drug Deliv Rev 2015; 87:52-67. [PMID: 25747758 PMCID: PMC7102600 DOI: 10.1016/j.addr.2015.02.008] [Citation(s) in RCA: 184] [Impact Index Per Article: 20.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 02/23/2015] [Accepted: 02/25/2015] [Indexed: 12/15/2022]
Abstract
Oligonucleotide-based drugs have received considerable attention for their capacity to modulate gene expression very specifically and as a consequence they have found applications in the treatment of many human acquired or genetic diseases. Clinical translation has been often hampered by poor biodistribution, however. Cell-penetrating peptides (CPPs) appear as a possibility to increase the cellular delivery of non-permeant biomolecules such as nucleic acids. This review focuses on CPP-delivery of several classes of oligonucleotides (ONs), namely antisense oligonucleotides, splice switching oligonucleotides (SSOs) and siRNAs. Two main strategies have been used to transport ONs with CPPs: covalent conjugation (which is more appropriate for charge-neutral ON analogues) and non-covalent complexation (which has been used for siRNA delivery essentially). Chemical synthesis, mechanisms of cellular internalization and various applications will be reviewed. A comprehensive coverage of the enormous amount of published data was not possible. Instead, emphasis has been put on strategies that have proven to be effective in animal models of important human diseases and on examples taken from the authors' own expertise.
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Affiliation(s)
- Prisca Boisguérin
- Centre de Recherche de Biochimie Macromoléculaire, UMR 5237 CNRS, 1919 Route de Mende, 34293 Montpellier, France.
| | - Sébastien Deshayes
- Centre de Recherche de Biochimie Macromoléculaire, UMR 5237 CNRS, 1919 Route de Mende, 34293 Montpellier, France
| | - Michael J Gait
- Medical Research Council, Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - Liz O'Donovan
- Medical Research Council, Laboratory of Molecular Biology, Francis Crick Avenue, Cambridge CB2 0QH, UK
| | - Caroline Godfrey
- University of Oxford, Department of Physiology, Anatomy and Genetics, South Parks Road, Oxford OX1 3QX, UK
| | - Corinne A Betts
- University of Oxford, Department of Physiology, Anatomy and Genetics, South Parks Road, Oxford OX1 3QX, UK
| | - Matthew J A Wood
- University of Oxford, Department of Physiology, Anatomy and Genetics, South Parks Road, Oxford OX1 3QX, UK
| | - Bernard Lebleu
- UMR 5235 CNRS, Université Montpellier 2, Place Eugene Bataillon, Montpellier 34095, France
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9
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Taylor DD, Gercel-Taylor C. Exosome platform for diagnosis and monitoring of traumatic brain injury. Philos Trans R Soc Lond B Biol Sci 2015; 369:rstb.2013.0503. [PMID: 25135964 DOI: 10.1098/rstb.2013.0503] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
We have previously demonstrated the release of membranous structures by cells into their extracellular environment, which are termed exosomes, microvesicles or extracellular vesicles depending on specific characteristics, including size, composition and biogenesis pathway. With activation, injury, stress, transformation or infection, cells express proteins and RNAs associated with the cellular responses to these events. The exosomes released by these cells can exhibit an array of proteins, lipids and nucleic acids linked to these physiologic events. This review focuses on exosomes associated with traumatic brain injury, which may be both diagnostic and a causative factor in the progression of the injury. Based on current data, exosomes play essential roles as conveyers of intercellular communication and mediators of many of the pathological conditions associated with development, progression and therapeutic failures and cellular stress in a variety of pathologic conditions. These extracellular vesicles express components responsible for angiogenesis promotion, stromal remodelling, signal pathway activation through growth factor/receptor transfer, chemoresistance, immunologic activation and genetic exchange. These circulating exosomes not only represent a central mediator of the pro-inflammatory microenvironment linked with secondary brain injury, but their presence in the peripheral circulation may serve as a surrogate for biopsies, enabling real-time diagnosis and monitoring of neurodegenerative progression.
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Affiliation(s)
- Douglas D Taylor
- Exosome Sciences, Inc., 11 Deer Park Drive, Suite 103, Monmouth Junction, NJ 08852, USA
| | - Cicek Gercel-Taylor
- Exosome Sciences, Inc., 11 Deer Park Drive, Suite 103, Monmouth Junction, NJ 08852, USA
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10
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Meyer SU, Thirion C, Polesskaya A, Bauersachs S, Kaiser S, Krause S, Pfaffl MW. TNF-α and IGF1 modify the microRNA signature in skeletal muscle cell differentiation. Cell Commun Signal 2015; 13:4. [PMID: 25630602 PMCID: PMC4325962 DOI: 10.1186/s12964-015-0083-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2014] [Accepted: 01/03/2015] [Indexed: 12/13/2022] Open
Abstract
Background Elevated levels of the inflammatory cytokine TNF-α are common in chronic diseases or inherited or degenerative muscle disorders and can lead to muscle wasting. By contrast, IGF1 has a growth promoting effect on skeletal muscle. The molecular mechanisms mediating the effect of TNF-α and IGF1 on muscle cell differentiation are not completely understood. Muscle cell proliferation and differentiation are regulated by microRNAs (miRNAs) which play a dominant role in this process. This study aims at elucidating how TNF-α or IGF1 regulate microRNA expression to affect myoblast differentiation and myotube formation. Results In this study, we analyzed the impact of TNF-α or IGF1 treatment on miRNA expression in myogenic cells. Results reveal that i) TNF-α and IGF1 regulate miRNA expression during skeletal muscle cell differentiation in vitro, ii) microRNA targets can mediate the negative effect of TNF-α on fusion capacity of skeletal myoblasts by targeting genes associated with axon guidance, MAPK signalling, focal adhesion, and neurotrophin signalling pathway, iii) inhibition of miR-155 in combination with overexpression of miR-503 partially abrogates the inhibitory effect of TNF-α on myotube formation, and iv) MAPK/ERK inhibition might participate in modulating the effect of TNF-α and IGF1 on miRNA abundance. Conclusions The inhibitory effects of TNF-α or the growth promoting effects of IGF1 on skeletal muscle differentiation include the deregulation of known muscle-regulatory miRNAs as well as miRNAs which have not yet been associated with skeletal muscle differentiation or response to TNF-α or IGF1. This study indicates that miRNAs are mediators of the inhibitory effect of TNF-α on myoblast differentiation. We show that intervention at the miRNA level can ameliorate the negative effect of TNF-α by promoting myoblast differentiation. Moreover, we cautiously suggest that TNF-α or IGF1 modulate the miRNA biogenesis of some miRNAs via MAPK/ERK signalling. Finally, this study identifies indicative biomarkers of myoblast differentiation and cytokine influence and points to novel RNA targets. Electronic supplementary material The online version of this article (doi:10.1186/s12964-015-0083-0) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Swanhild U Meyer
- Physiology Weihenstephan, ZIEL Research Center for Nutrition and Food Sciences, Technische Universität München, Weihenstephaner Berg 3, D-85354, Freising, Germany.
| | - Christian Thirion
- SIRION Biotech GmbH, Am Klopferspitz 19, 82152, Martinsried, Germany.
| | - Anna Polesskaya
- CNRS FRE 3377, Univ. Paris-Sud, CEA Saclay, iBiTec-S/ SBIGeM, F-91191, Gif-sur-Yvette, France.
| | - Stefan Bauersachs
- Laboratory for Functional Genome Analysis (LAFUGA), Gene Center, LMU Munich, Feodor-Lynen-Str. 25, 81377, Munich, Germany. .,Current address: ETH Zurich, Institute of Agricultural Sciences, Animal Physiology, Universitätstrasse 2 / LFW B 58.1, 8092, Zurich, Switzerland.
| | - Sebastian Kaiser
- Department of Statistics, Ludwig-Maximilians-Universität München, Ludwigstr. 33, 80539, Munich, Germany.
| | - Sabine Krause
- Friedrich-Baur-Institute, Department of Neurology, Ludwig-Maximilians-Universität München, Marchioninistr. 17, 81377, Munich, Germany.
| | - Michael W Pfaffl
- Physiology Weihenstephan, ZIEL Research Center for Nutrition and Food Sciences, Technische Universität München, Weihenstephaner Berg 3, D-85354, Freising, Germany.
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Bloch SAA, Lee JY, Syburra T, Rosendahl U, Griffiths MJD, Kemp PR, Polkey MI. Increased expression of GDF-15 may mediate ICU-acquired weakness by down-regulating muscle microRNAs. Thorax 2014; 70:219-28. [PMID: 25516419 PMCID: PMC4345798 DOI: 10.1136/thoraxjnl-2014-206225] [Citation(s) in RCA: 82] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Rationale The molecular mechanisms underlying the muscle atrophy of intensive care unit-acquired weakness (ICUAW) are poorly understood. We hypothesised that increased circulating and muscle growth and differentiation factor-15 (GDF-15) causes atrophy in ICUAW by changing expression of key microRNAs. Objectives To investigate GDF-15 and microRNA expression in patients with ICUAW and to elucidate possible mechanisms by which they cause muscle atrophy in vivo and in vitro. Methods In an observational study, 20 patients with ICUAW and seven elective surgical patients (controls) underwent rectus femoris muscle biopsy and blood sampling. mRNA and microRNA expression of target genes were examined in muscle specimens and GDF-15 protein concentration quantified in plasma. The effects of GDF-15 on C2C12 myotubes in vitro were examined. Measurements and main results Compared with controls, GDF-15 protein was elevated in plasma (median 7239 vs 2454 pg/mL, p=0.001) and GDF-15 mRNA in the muscle (median twofold increase p=0.006) of patients with ICUAW. The expression of microRNAs involved in muscle homeostasis was significantly lower in the muscle of patients with ICUAW. GDF-15 treatment of C2C12 myotubes significantly elevated expression of muscle atrophy-related genes and down-regulated the expression of muscle microRNAs. miR-181a suppressed transforming growth factor-β (TGF-β) responses in C2C12 cells, suggesting increased sensitivity to TGF-β in ICUAW muscle. Consistent with this suggestion, nuclear phospho-small mothers against decapentaplegic (SMAD) 2/3 was increased in ICUAW muscle. Conclusions GDF-15 may increase sensitivity to TGF-β signalling by suppressing the expression of muscle microRNAs, thereby promoting muscle atrophy in ICUAW. This study identifies both GDF-15 and associated microRNA as potential therapeutic targets.
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Affiliation(s)
- S A A Bloch
- Molecular Medicine, National Heart and Lung Institute, Imperial College, London, UK
| | - J Y Lee
- Molecular Medicine, National Heart and Lung Institute, Imperial College, London, UK
| | - T Syburra
- National Institute for Health Research Respiratory Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust and Imperial College, London, UK
| | - U Rosendahl
- National Institute for Health Research Respiratory Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust and Imperial College, London, UK
| | - M J D Griffiths
- National Institute for Health Research Respiratory Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust and Imperial College, London, UK Leukocyte Biology, National Heart and Lung Institute, Imperial College, London, UK
| | - P R Kemp
- Molecular Medicine, National Heart and Lung Institute, Imperial College, London, UK
| | - M I Polkey
- National Institute for Health Research Respiratory Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust and Imperial College, London, UK
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12
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Hu J, Kong M, Ye Y, Hong S, Cheng L, Jiang L. Serum miR-206 and other muscle-specific microRNAs as non-invasive biomarkers for Duchenne muscular dystrophy. J Neurochem 2014; 129:877-83. [PMID: 24460924 DOI: 10.1111/jnc.12662] [Citation(s) in RCA: 65] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 12/29/2013] [Accepted: 01/17/2014] [Indexed: 11/30/2022]
Abstract
Creatine kinase has been utilized as a diagnostic marker for Duchenne muscular dystrophy (DMD), but it correlates less well with the DMD pathological progression. In this study, we hypothesized that muscle-specific microRNAs (miR-1, -133, and -206) in serum may be useful for monitoring the DMD pathological progression, and explored the possibility of these miRNAs as potential non-invasive biomarkers for the disease. By using real-time quantitative reverse transcription-polymerase chain reaction in a randomized and controlled trial, we detected that miR-1, -133, and -206 were significantly over-expressed in the serum of 39 children with DMD (up to 3.20 ± 1.20, 2(-ΔΔCt) ): almost 2- to 4-fold enriched in comparison to samples from the healthy controls (less than 1.15 ± 0.34, 2(-ΔΔCt) ). To determine whether these miRNAs were related to the clinical features of children with DMD, we analyzed the associations compared to creatine kinase. There were very good inverse correlations between the levels of these miRNAs, especially miR-206, and functional performances: high levels corresponded to low muscle strength, muscle function, and quality of life. Moreover, by receiver operating characteristic curves analyses, we revealed that these miRNAs, especially miR-206, were able to discriminate DMD from controls. Thus, miR-206 and other muscle-specific miRNAs in serum are useful for monitoring the DMD pathological progression, and hence as potential non-invasive biomarkers for the disease. There has been a long-standing need for reliable, non-invasive biomarkers for Duchenne muscular dystrophy (DMD). We found that the levels of muscle-specific microRNAs, especially miR-206, in the serum of DMD were 2- to 4-fold higher than in the controls. High levels corresponded to low muscle strength, muscle function, and quality of life (QoL). These miRNAs were able to discriminate DMD from controls by receiver operating characteristic (ROC) curves analyses. Thus, miR-206 and other muscle-specific miRNAs are useful as non-invasive biomarkers for DMD.
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Affiliation(s)
- Jun Hu
- Ministry of Education Key Laboratory of Child Development and Disorders, Chongqing, China; Key Laboratory of Pediatrics in Chongqing, Chongqing, China; Chongqing International Science, Technology Cooperations Center for Child Development and Disorders, Chongqing, China; Department of Neurology, Children's Hospital, Chongqing Medical University, Chongqing, China; Department of Pediatrics, Union Hospital, Fujian Medical University, Fuzhou, China
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Zhang H, Shykind B, Sun T. Approaches to manipulating microRNAs in neurogenesis. Front Neurosci 2013; 6:196. [PMID: 23335878 PMCID: PMC3547386 DOI: 10.3389/fnins.2012.00196] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2012] [Accepted: 12/21/2012] [Indexed: 12/21/2022] Open
Abstract
Neurogenesis in the nervous system is regulated by both protein coding genes and non-coding RNA molecules. microRNAs (miRNAs) are endogenous small non-coding RNAs and usually negatively regulate gene expression by binding to the 3′ untranslated region (3′UTR) of target messenger RNAs (mRNAs). miRNAs have been shown to play an essential role in neurogenesis, regulating neuronal proliferation, differentiation, maturation, and migration. An important strategy used to reveal miRNA function is the manipulation of their expression levels and patterns in specific regions and cell types in the nervous system. In this review we will systemically highlight established and new approaches used to achieve gain-of-function and loss-of-function of miRNAs in vitro and in vivo, and will also summarize miRNA delivery techniques. As the development of these leading edge techniques come online, more exciting discoveries of the roles miRNAs play in neural development and function will be uncovered.
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Affiliation(s)
- Haijun Zhang
- Department of Cell and Developmental Biology, Weill Medical College of Cornell University New York, NY, USA
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Zhu W, Streicher K, Shen N, Higgs BW, Morehouse C, Greenlees L, Amato AA, Ranade K, Richman L, Fiorentino D, Jallal B, Greenberg SA, Yao Y. Genomic signatures characterize leukocyte infiltration in myositis muscles. BMC Med Genomics 2012; 5:53. [PMID: 23171592 PMCID: PMC3541209 DOI: 10.1186/1755-8794-5-53] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2012] [Accepted: 10/23/2012] [Indexed: 01/05/2023] Open
Abstract
Background Leukocyte infiltration plays an important role in the pathogenesis and progression of myositis, and is highly associated with disease severity. Currently, there is a lack of: efficacious therapies for myositis; understanding of the molecular features important for disease pathogenesis; and potential molecular biomarkers for characterizing inflammatory myopathies to aid in clinical development. Methods In this study, we developed a simple model and predicted that 1) leukocyte-specific transcripts (including both protein-coding transcripts and microRNAs) should be coherently overexpressed in myositis muscle and 2) the level of over-expression of these transcripts should be correlated with leukocyte infiltration. We applied this model to assess immune cell infiltration in myositis by examining mRNA and microRNA (miRNA) expression profiles in muscle biopsies from 31 myositis patients and 5 normal controls. Results Several gene signatures, including a leukocyte index, type 1 interferon (IFN), MHC class I, and immunoglobulin signature, were developed to characterize myositis patients at the molecular level. The leukocyte index, consisting of genes predominantly associated with immune function, displayed strong concordance with pathological assessment of immune cell infiltration. This leukocyte index was subsequently utilized to differentiate transcriptional changes due to leukocyte infiltration from other alterations in myositis muscle. Results from this differentiation revealed biologically relevant differences in the relationship between the type 1 IFN pathway, miR-146a, and leukocyte infiltration within various myositis subtypes. Conclusions Results indicate that a likely interaction between miR-146a expression and the type 1 IFN pathway is confounded by the level of leukocyte infiltration into muscle tissue. Although the role of miR-146a in myositis remains uncertain, our results highlight the potential benefit of deconvoluting the source of transcriptional changes in myositis muscle or other heterogeneous tissue samples. Taken together, the leukocyte index and other gene signatures developed in this study may be potential molecular biomarkers to help to further characterize inflammatory myopathies and aid in clinical development. These hypotheses need to be confirmed in separate and sufficiently powered clinical trials.
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Affiliation(s)
- Wei Zhu
- Translational Sciences, MedImmune, LLC, Gaithersburg, MD 20878, USA.
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15
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Chen L, Zhang A, Li Y, Zhang K, Han L, Du W, Yan W, Li R, Wang Y, Wang K, Pu P, Jiang T, Jiang C, Kang C. MiR-24 regulates the proliferation and invasion of glioma by ST7L via β-catenin/Tcf-4 signaling. Cancer Lett 2012; 329:174-80. [PMID: 23142218 DOI: 10.1016/j.canlet.2012.10.025] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2012] [Revised: 10/22/2012] [Accepted: 10/27/2012] [Indexed: 11/29/2022]
Abstract
MicroRNAs are strongly implicated as affecting glioma, but their specific roles and functions have yet to be fully elucidated. In this study, we defined the expression and function of miR-24, which we found to be upregulated in glioma samples and glioma cells by qRT-PCR. Downregulation of miR-24 in glioma cell lines inhibited proliferation and invasion and induced apoptosis. Using computational and expression analysis, ST7L was identified as a candidate target of miR-24. A reporter assay with the 3'UTR of ST7L cloned downstream of a luciferase gene showed increased luciferase activity in the absence of miR-24, providing strong evidence that miR-24 is a direct regulator of ST7L. Furthermore, we observed that restoration of ST7L activity resulted in effects that were similar to those from transfecting a miR-24 inhibitor into glioma cells. Mechanistic investigation revealed that the deletion of miR-24 suppressed β-catenin/Tcf-4 transcription activity by targeting ST7L. In conclusion, our study demonstrates that miR-24 upregulation is common in glioma and that suppression of miR-24 expression inhibits cell proliferation and invasion, suggesting that miR-24 may act as an oncogene in glioma.
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Affiliation(s)
- Lingchao Chen
- Department of Neurosurgery, Tianjin Medical University General Hospital, Laboratory of Neuro-Oncology, Tianjin Neurological Institute, Tianjin 300060, China
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16
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Albayda J, Christopher-Stine L. Novel approaches in the treatment of myositis and myopathies. Ther Adv Musculoskelet Dis 2012; 4:369-77. [PMID: 23024713 DOI: 10.1177/1759720x12447705] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
The inflammatory myopathies are a heterogeneous group of disorders characterized by muscle weakness and inflammation. Although no standard therapeutic guidelines exist, traditional treatment has included corticosteroids and a variety of second-line immunosuppressants. As treatment of refractory disease has been difficult, newer agents and approaches have been used with varying response. The advent of standardized treatment response criteria by the International Myositis Assessment and Clinical Studies (IMACS) group has helped investigators to evaluate and compare clinical trial outcomes in a more rigorous fashion. The use of intravenous immunoglobulin (IVIG), rituximab, biologic agents including tumor necrosis factor (TNF) inhibitors, stem-cell transplantation, gene therapy, and vascular occlusion resistance training are reviewed here. As our understanding of disease pathogenesis at the immunologic, genetic, and molecular level expands, the discovery of novel therapeutic targets hold promise for the successful treatment of these conditions.
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Affiliation(s)
- Jemima Albayda
- Division of Rheumatology, Department of Medicine, Johns Hopkins University School of Medicine, Baltimore, MD, USA
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17
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Weill L, Belloc E, Bava FA, Méndez R. Translational control by changes in poly(A) tail length: recycling mRNAs. Nat Struct Mol Biol 2012; 19:577-85. [PMID: 22664985 DOI: 10.1038/nsmb.2311] [Citation(s) in RCA: 233] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Beyond the well-known function of poly(A) tail length in mRNA stability, recent years have witnessed an explosion of information about how changes in tail length and the selection of alternative polyadenylation sites contribute to the translational regulation of a large portion of the genome. The mechanisms and factors mediating nuclear and cytoplasmic changes in poly(A) tail length have been studied in great detail, the targets of these mechanisms have been identified--in some cases by genome-wide screenings--and changes in poly(A) tail length are now implicated in a number of physiological and pathological processes. However, in very few cases have all three levels--mechanisms, targets and functions--been studied together.
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Affiliation(s)
- Laure Weill
- Institute for Research in Biomedicine-IRB Barcelona, Barcelona, Spain
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18
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Xu J, Zhao J, Evan G, Xiao C, Cheng Y, Xiao J. Circulating microRNAs: novel biomarkers for cardiovascular diseases. J Mol Med (Berl) 2011; 90:865-75. [PMID: 22159451 DOI: 10.1007/s00109-011-0840-5] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2011] [Revised: 11/26/2011] [Accepted: 11/28/2011] [Indexed: 02/07/2023]
Abstract
MicroRNAs (miRNAs) are a novel class of small, non-coding, single-stranded RNAs that negatively regulate gene expression via translational inhibition or mRNA degradation followed by protein synthesis repression. Many miRNAs are expressed in a tissue- and/or cell-specific manner and their expression patterns are reflective of underlying patho-physiologic processes. miRNAs can be detected in serum or in plasma in a remarkably stable form, making them attractive biomarkers for human diseases. This review describes the progress of identifying circulating miRNAs as novel biomarkers for diverse cardiovascular diseases, including acute myocardial infarction, heart failure, coronary artery disease, diabetes, stroke, essential hypertension, and acute pulmonary embolism. In addition, the origin and function and the different strategies to identify circulating miRNAs as novel biomarkers for cardiovascular diseases are also discussed. Rarely has an opportunity arisen to advance such new biology for the diagnosis of cardiac diseases.
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Affiliation(s)
- Jiahong Xu
- Department of Cardiology, Tongji Hospital, Tongji University School of Medicine, 200065, Shanghai, China
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Liu LH, Li H, Li JP, Zhong H, Zhang HC, Chen J, Xiao T. miR-125b suppresses the proliferation and migration of osteosarcoma cells through down-regulation of STAT3. Biochem Biophys Res Commun 2011; 416:31-8. [PMID: 22093834 DOI: 10.1016/j.bbrc.2011.10.117] [Citation(s) in RCA: 111] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2011] [Accepted: 10/26/2011] [Indexed: 01/05/2023]
Abstract
There is accumulating evidence that microRNAs are involved in multiple processes in development and tumor progression. Abnormally expressed miR-125b was found to play a fundamental role in several types of cancer; however, whether miR-125b participates in regulating the initiation and progress of osteosarcoma still remains unclear. Here we demonstrate that miR-125b is frequently down-regulated in osteosarcoma samples and human osteosarcoma cell lines. The ectopic restoration of miR-125b expression in human osteosarcoma cells suppresses proliferation and migration in vitro and inhibits tumor formation in vivo. We further identified signal transducer and activator of transcription 3 (STAT3) as the direct and functional downstream target of miR-125b. Interestingly, we discovered that the expression of miR-125b is regulated by STAT3 at the level of transcription. STAT3 binds to the promoter region of miR-125b in vitro and serves as a transactivator. Taken together, our findings point to an important role in the molecular etiology of osteosarcoma and suggest that miR-125b is a potential target in the treatment of osteosarcoma.
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Affiliation(s)
- Li-hong Liu
- Department of Orthopedics, The Second Xiangya Hospital of Central South University, Changsha 410010, China
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