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Leoncini P, Vitullo P, Reddel S, Tocco V, Paganelli V, Stocchi F, Mariggiò E, Massa M, Nigita G, Veneziano D, Fadda P, Scarpa M, Pigazzi M, Bertaina A, Rota R, Pagliara D, Merli P. MicroRNA profiling of paediatric AML with FLT-ITD or MLL-rearrangements: Expression signatures and in vitro modulation of miR-221-3p and miR-222-3p with BRD4/HATs inhibitors. Oncol Rep 2022; 48:221. [DOI: 10.3892/or.2022.8436] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 08/10/2022] [Indexed: 11/18/2022] Open
Affiliation(s)
- Pier Leoncini
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
| | - Patrizia Vitullo
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
| | - Sofia Reddel
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
| | - Valeria Tocco
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
| | - Valeria Paganelli
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
| | - Francesca Stocchi
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
| | - Elena Mariggiò
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
| | - Michele Massa
- Department of Maternal Infantile and Urological Sciences, Sapienza University of Rome, I-00161 Rome, Italy
| | - Giovanni Nigita
- Department of Cancer Biology and Genetics, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210-1239, USA
| | - Dario Veneziano
- Department of Cancer Biology and Genetics, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210-1239, USA
| | - Paolo Fadda
- Genomics Shared Resource, Comprehensive Cancer Center, The Ohio State University, Columbus, OH 43210-1239, USA
| | - Mario Scarpa
- Department of Biomedical Research, Urology Research laboratory, University of Bern, CH-3008 Bern, Switzerland
| | - Martina Pigazzi
- Department of Women's and Children's Health (SDB), Hematology-Oncology Laboratory, University of Padova, I-35128 Padova, Italy
| | - Alice Bertaina
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
| | - Rossella Rota
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
| | - Daria Pagliara
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
| | - Pietro Merli
- Department of Paediatric Haematology and Oncology, Cell and Gene Therapy, Bambino Gesù Children's Hospital, IRCCS, I-00146 Rome, Italy
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Wang Q, Yue C, Liu Q, Che X. Exploration of differentially expressed mRNAs and miRNAs for pediatric acute myeloid leukemia. Front Genet 2022; 13:865111. [PMID: 36160019 PMCID: PMC9499657 DOI: 10.3389/fgene.2022.865111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 08/08/2022] [Indexed: 11/21/2022] Open
Abstract
Background: To establish a comprehensive differential gene profile for pediatric acute myeloid leukemia patients (pAML) based on two independent databases and verify the differentially expressed genes using in vitro and in vivo analyses. Methods: The mRNA and miRNA sequencing information of GSE2191 and GSE35320, clinically recruited pAML individuals, and human AML cell line (NB4 cells) were utilized in the study. Results: Compared with the control sample, pAML patients demonstrated a total of 778 differentially expressed genes, including 565 upregulated genes and 213 downregulated genes. The genes including ZC3H15, BCLAF1, PPIG, DNTTIP2, SRSF11, KTN1, UBE3A, PRPF40A, TMED5, and GNL2 were the top 10 potential hub genes. At the same time, 12 miRNAs demonstrated remarkable differential expressions in pAML individuals compared with control individuals, as five upregulated and seven downregulated miRNAs. The hsa-miR-133, hsa-miR-181, and hsa-miR-195 were significantly downregulated. Building a miRNA–mRNA regulatory network, hsa-miR-133 regulated ZC3H15, BCLAF1, SRSF11, KTN1, PRPF40A, and GNL2. Using the NB4 cell model, hsa-miR-133 treatment inhibited cell proliferation capacity, which could be attenuated by a single mRNA transfection or a combination of ZC3H15 and BCLAF1. At the same time, hsa-miR-133 mimic treatment could significantly accelerate cell apoptosis in NB4 cells, which was also ZC3H15- and BCLAF1-dependent. The concentrations of ZC3H15 and BCLAF1 were investigated in peripheral blood using the ELISA method for the clinical control and pAML samples. In pAML samples, the expression levels of ZC3H15 and BCLAF1 were significantly enhanced (p < 0.01), regardless of the classification. Conclusion: Collectively, this study hypothesized several promising candidates for pAML formation.
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Affiliation(s)
- Qing Wang
- Department of Clinical Laboratory, The General Hospital of Tianjin Medical University, Tianjin, China
| | - Chao Yue
- Department of Blood Transfusion, The Fifth Central Hospital of Tianjin, Tianjin, China
| | - Qin Liu
- Department of Clinical Laboratory, The Fifth Central Hospital of Tianjin, Tianjin, China
| | - Xuchun Che
- Department of Immunology, Tianjin Key Laboratory of Cellular and Molecular Immunology, Key Laboratory of Educational Ministry of China, School of Basic Medical Sciences, Tianjin Medical University, Tianjin, China
- *Correspondence: Xuchun Che,
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Saadi MI, Tahmasebijaroubi F, Noshadi E, Rahimikian R, Karimi Z, Owjfard M, Niknam A, Abdolyousefi EN, Salek S, Tabrizi R, Jamali E. Dysregulated Expression of MiR-19b, MiR-25, MiR-17, WT1, and CEBPA in Patients with Acute Myeloid Leukemia and Association with Graft versus Host Disease after Hematopoietic Stem Cell Transplantation. South Asian J Cancer 2022; 11:346-352. [PMID: 36756106 PMCID: PMC9902101 DOI: 10.1055/s-0042-1742593] [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] [Indexed: 10/18/2022] Open
Abstract
Elham JamaliObjectives Acute myeloid leukemia (AML) is a blood malignancy characterized by the proliferation of aberrant cells in the bone marrow and blood that interfere with normal blood cells. We have investigated whether changes in the level of micro-ribonucleic acid (miR)-19b, miR-17, and miR-25, Wilms' tumor (WT1), and CCAAT enhancer-binding protein α (CEBPA) genes expression affect disease prognosis and clinical outcome in AML patients. Materials and Methods The expression level of miR-19-b, miR-17, and miR-25, as well as WT1 and CEBPA genes in a group of patients and controls as well as different risk groups (high, intermediate, and favorite risk), M3 versus non-M3, and graft-versus-host disease (GvHD) versus non-GvHD patients were assessed using a quantitative SYBR Green real-time polymerase chain reaction method. Results When compared with the baseline level at the period of diagnosis before chemotherapy, the expression of miR-19b and miR-17 in AML patients increased significantly after chemotherapy. The level of miR-19b and miR-25 expression in AML patients with M3 and non-M3 French-American-British subgroups differ significantly. MiR-19b and miR-25 expression was elevated in GvHD patients, while miR-19b and miR-25 expression was somewhat decreased in GvHD patients compared with non-GvHD patients, albeit the difference was not statistically significant. Also, patients with different cytogenetic aberrations had similar levels of miR-19-b and miR-25 expression. Conclusion MiR-19b, miR-17, and miR-25 are aberrantly expressed in AML patients' peripheral blood leukocytes, which may play a role in the development of acute GvHD following hematopoietic stem cell transplantation.
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Affiliation(s)
| | | | - Esmat Noshadi
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Raha Rahimikian
- Department of Biochemistry, Bushehr University of Medical Sciences, Bushehr, Iran
| | - Zahed Karimi
- Hematology and Oncology Department, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Maryam Owjfard
- Clinical Neurology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran,Shiraz University of Applied Science and Technology (UAST), Shiraz, Iran,Address for correspondence Elham Jamali, MSc Hematology Research Center and Department of Bone Marrow Transplantation, Shiraz University of Medical SciencesShirazIran
| | - Ahmad Niknam
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | | | - Sanaz Salek
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Reza Tabrizi
- Health Policy Research Center, Institute of Health, Shiraz University of Medical Sciences, Shiraz, Iran,Non Communicable Diseases Research Center (NCDC), Fasa University of Medical Sciences, Fasa, Iran
| | - Elham Jamali
- Hematology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran,Address for correspondence Elham Jamali, MSc Hematology Research Center and Department of Bone Marrow Transplantation, Shiraz University of Medical SciencesShirazIran
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Cytogenetic risk groups for childhood acute myeloid leukemia based on survival analysis in a cancer referral hospital from Perú. ACTA ACUST UNITED AC 2021; 41:302-313. [PMID: 34214271 PMCID: PMC8382291 DOI: 10.7705/biomedica.5747] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2020] [Indexed: 12/27/2022]
Abstract
Introduction: Acute myeloid leukemia is a heterogeneous disorder characterized by immature myeloid cell proliferation. Cytogenetic analysis has revealed the presence of chromosomal aberrations important to patient prognosis.
Objective: To determine cytogenetic risk groups of pediatric patients with acute myeloid leukemia according to overall survival.
Materials and methods: In this cross-sectional observational study, the clinical records of pediatric patients diagnosed with de novo acute myeloid leukemia admitted to the Instituto Nacional de Enfermedades Neoplásicas between 2001 and 2011 with cytogenetic analysis of bone marrow were included. Cytogenetic risk groups were established according to the criteria of the Medical Research Council. Overall survival curves were generated with the Kaplan-Meier method and compared using the Mantel-Cox test and Cox regression with the software R, version 3.3.2.
Results: A total of 130 patients were included, 68 males (52.3%) and 62 females (47.7%), most of them with subtype M2 (33%). The average age was 7.7 years (range: 0-15 years). Chromosomal aberrations were observed in 60.8% of the patients, the most frequent of which was the translocation t(8;21). According to the overall survival analysis, two cytogenetic risk groups were established: favorable and unfavorable.
Conclusion: Two groups of cytogenetic risk were determined: high (or unfavorable) and standard (favorable).
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Wang G, Yu X, Xia J, Sun J, Huang H, Liu Y. MicroRNA-9 restrains the sharp increase and boost apoptosis of human acute myeloid leukemia cells by adjusting the Hippo/YAP signaling pathway. Bioengineered 2021; 12:2906-2914. [PMID: 34167441 PMCID: PMC8806226 DOI: 10.1080/21655979.2021.1915727] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
MicroRNAs (miRNAs) play a very important role in the development of acute myeloid leukemia (AML). This study focuses on the effects of miR-9 on the regulation of AML cells and their related signaling pathways. We found that the expression of miR-9 was significantly decreased in four AML cell lines (THP-1, HL-60, TF-1 and KG-1) compared with the human normal bone marrow cells (HS-5). Moreover, miR-9 overexpression inhibited HL-60 cell proliferation ability, and promoted apoptosis. However, interfering with miR-9 expression promoted the proliferation of HL-6 cells and inhibited apoptosis. Western blotting results subsequently showed that overexpression of miR-9 could elevate the expression of MAT1, LATS1, and LATS2 in HL-60 cells, and inhibit the expression of YAP, while the interference with miR-9 had the opposite result. Taken together, miR-9 may act as a tumor suppressor by activating the Hippo/YAP signaling pathway of AML cells, which in this way supply ideas for the clinical remedy of AML patients.
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Affiliation(s)
- Guoqing Wang
- Department of Clinical Laboratory, Jiading District Central Hospital Affiliated to Shanghai Health Medical College, Shanghai, China
| | - Xiuwen Yu
- Department of Clinical Laboratory, Jiading District Central Hospital Affiliated to Shanghai Health Medical College, Shanghai, China
| | - Jiajia Xia
- Department of Clinical Laboratory, Jiading District Central Hospital Affiliated to Shanghai Health Medical College, Shanghai, China
| | - Jie Sun
- Department of Clinical Laboratory, Jiading District Central Hospital Affiliated to Shanghai Health Medical College, Shanghai, China
| | - Haiyan Huang
- Department of Clinical Laboratory, Jiading District Central Hospital Affiliated to Shanghai Health Medical College, Shanghai, China
| | - Yeqiong Liu
- Department of Clinical Laboratory, Jiading District Central Hospital Affiliated to Shanghai Health Medical College, Shanghai, China
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Huang F, Tang W, Lei Y. MicroRNA-107 promotes apoptosis of acute myelocytic leukemia cells by targeting RAD51. Arch Med Sci 2021; 17:1044-1055. [PMID: 34336032 PMCID: PMC8314419 DOI: 10.5114/aoms.2020.92860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/18/2018] [Accepted: 06/11/2018] [Indexed: 11/17/2022] Open
Abstract
INTRODUCTION This study aimed to investigate the role of microRNA (miRNA) that affects acute myelocytic leukemia (AML) and its potential molecular mechanism by constructing a miRNA-mRNA interaction network using bioinformatics methods. MATERIAL AND METHODS MicroRNA expression data of AML were retrieved from Gene Expression Omnibus (GEO) and analyzed by microarray analysis. Expression levels of miR-107 and RAD51 mRNA were detected by quantitative real time polymerase chain reaction (qRT-PCR). Protein expression of RAD51, pro-apoptotic protein Bax, apoptosis related protein CytC and anti-apoptotic protein Bcl-2 were determined by Western blot. The rate of cell apoptosis was detected by Annexin-V/PI. The predicted targeting relationship between miR-107 and the 3'UTR of RAD51 was first predicted by the online application TargetScan and then verified by dual-luciferase assay. RESULTS Acute myelocytic leukemia-associated genes (n = 197) and miRNAs (n = 1701) were retrieved from the database, the interaction network of miRNA-mRNA was constructed and the core position was occupied by RAD51. miR-107 exhibited a regulatory effect on RAD51 in which the mRNA and protein expression of RAD51 were both significantly inhibited by miR-107 mimics in vitro. Additionally, down-regulated expression of miR107 as well as up-regulated expression of RAD51 were detected not only in the plasma of AML patients compared to healthy volunteers, but also in AML cell lines compared to the normal bone marrow stromal cell line. Further study found that increased expression of miR-107 and the consequent down-regulation of RAD51 could aggravate the apoptosis of AML cells in vitro. CONCLUSIONS Our present results showed that the crucial role of RAD51 and miR-107 in the apoptosis of AML cells, i.e., miR-107 promotes the apoptosis of AML cells through down-regulating the expression of RAD51.
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Affiliation(s)
- Fengxia Huang
- Department of Medical Technology Clinical and Hematological Laboratory Office, Xi’an Medical University, Xi’an, Shaanxi, China
| | - Wei Tang
- Department of Radiology, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
| | - Yan Lei
- Department of Laboratory Medicine, North Sichuan Medical College, Nanchong, Sichuan, China
- Department of Clinical Laboratory, Affiliated Hospital of North Sichuan Medical College, Nanchong, Sichuan, China
- Translational Medical Research Center, North Sichuan Medical College, Nanchong, Sichuan, China
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The Role of microRNAs in Organismal and Skin Aging. Int J Mol Sci 2020; 21:ijms21155281. [PMID: 32722415 PMCID: PMC7432402 DOI: 10.3390/ijms21155281] [Citation(s) in RCA: 52] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 07/11/2020] [Accepted: 07/23/2020] [Indexed: 12/12/2022] Open
Abstract
The aging process starts directly after birth and lasts for the entire lifespan; it manifests itself with a decline in an organism’s ability to adapt and is linked to the development of age-related diseases that eventually lead to premature death. This review aims to explore how microRNAs (miRNAs) are involved in skin functioning and aging. Recent evidence has suggested that miRNAs regulate all aspects of cutaneous biogenesis, functionality, and aging. It has been noted that some miRNAs were down-regulated in long-lived individuals, such as let-7, miR-17, and miR-34 (known as longevity-related miRNAs). They are conserved in humans and presumably promote lifespan prolongation; conversely, they are up-regulated in age-related diseases, like cancers. The analysis of the age-associated cutaneous miRNAs revealed the increased expression of miR-130, miR-138, and miR-181a/b in keratinocytes during replicative senescence. These miRNAs affected cell proliferation pathways via targeting the p63 and Sirtuin 1 mRNAs. Notably, miR-181a was also implicated in skin immunosenescence, represented by the Langerhans cells. Dermal fibroblasts also expressed increased the levels of the biomarkers of aging that affect telomere maintenance and all phases of the cellular life cycle, such as let-7, miR-23a-3p, 34a-5p, miR-125a, miR-181a-5p, and miR-221/222-3p. Among them, the miR-34 family, stimulated by ultraviolet B irradiation, deteriorates collagen in the extracellular matrix due to the activation of the matrix metalloproteinases and thereby potentiates wrinkle formation. In addition to the pro-aging effects of miRNAs, the plausible antiaging activity of miR-146a that antagonized the UVA-induced inhibition of proliferation and suppressed aging-related genes (e.g., p21WAF-1, p16, and p53) through targeting Smad4 has also been noticed. Nevertheless, the role of miRNAs in skin aging is still not fully elucidated and needs to be further discovered and explained.
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Szczepanek J. Role of microRNA dysregulation in childhood acute leukemias: Diagnostics, monitoring and therapeutics: A comprehensive review. World J Clin Oncol 2020; 11:348-369. [PMID: 32855905 PMCID: PMC7426929 DOI: 10.5306/wjco.v11.i6.348] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 05/18/2020] [Accepted: 05/22/2020] [Indexed: 02/06/2023] Open
Abstract
MicroRNAs (miRNAs) are short noncoding RNAs that regulate the expression of genes by sequence-specific binding to mRNA to either promote or block its translation; they can also act as tumor suppressors (e.g., let-7b, miR-29a, miR-99, mir-100, miR-155, and miR-181) and/or oncogenes (e.g., miR-29a, miR-125b, miR-143-p3, mir-155, miR-181, miR-183, miR-196b, and miR-223) in childhood acute leukemia (AL). Differentially expressed miRNAs are important factors associated with the initiation and progression of AL. As shown in many studies, they can be used as noninvasive diagnostic and prognostic biomarkers, which are useful in monitoring early stages of AL development or during therapy (e.g., miR-125b, miR-146b, miR-181c, and miR-4786), accurate classification of different cellular or molecular AL subgroups (e.g., let-7b, miR-98, miR-100, miR-128b, and miR-223), and identification and development of new therapeutic agents (e.g., mir-10, miR-125b, miR-203, miR-210, miR-335). Specific miRNA patterns have also been described for commonly used AL therapy drugs (e.g., miR-125b and miR-223 for doxorubicin, miR-335 and miR-1208 for prednisolone, and miR-203 for imatinib), uncovering miRNAs that are associated with treatment response. In the current review, the role of miRNAs in the development, progression, and therapy monitoring of pediatric ALs will be presented and discussed.
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Affiliation(s)
- Joanna Szczepanek
- Centre for Modern Interdisciplinary Technologies, Nicolaus Copernicus University, Toruń 87100, Poland
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Qin Y, Wang Y, Liu D. miR-4792 Inhibits Acute Myeloid Leukemia Cell Proliferation and Invasion and Promotes Cell Apoptosis by Targeting Kindlin-3. Oncol Res 2020; 28:357-369. [PMID: 32183929 PMCID: PMC7851533 DOI: 10.3727/096504020x15844389264424] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
It has been reported that kindlin-3 expression is closely associated with progression of many cancers and microRNA (miRNA) processing. However, the effects and precise mechanisms of kindlin-3 in acute myeloid leukemia (AML) have not been well clarified. Our study aimed to explore the interaction between kindlin-3 and miR-4792 in AML. In our study, we found that the expression of kindlin-3 was dramatically increased in AML samples and cell lines, and the miR-4792 level was significantly downregulated. Interestingly, the low miR-4792 level was closely associated with upregulated kindlin-3 expression in AML samples. Moreover, introduction of miR-4792 dramatically suppressed proliferation and invasion and induced apoptosis of AML cells. We demonstrated that miR-4792 could directly target kindlin-3 by using both bioinformatics analysis and luciferase reporter assay. In addition, kindlin-3 silencing had similar effects with miR-4792 overexpression on AML cells. Overexpression of kindlin-3 in AML cells partially reversed the inhibitory effects of miR-4792 mimic. miR-4792 inhibited cell proliferation and invasion and induced apoptosis of AML cells by directly downregulating kindlin-3 expression, and miR-4792 targeting kindlin-3 was responsible for the regulation of the proliferation, invasion, and apoptosis of AML cells.
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Affiliation(s)
- Yun Qin
- Second Clinical College, Tongji Medical College, Huazhong University of Science and TechnologyWuhanP. R. China
| | - Yu Wang
- Hepatic Surgery Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanP. R. China
| | - Dongbo Liu
- Cancer Center, Tongji Hospital, Tongji Medical College, Huazhong University of Science and TechnologyWuhanP. R. China
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Carvalho de Oliveira J, Molinari Roberto G, Baroni M, Bezerra Salomão K, Alejandra Pezuk J, Sol Brassesco M. MiRNA Dysregulation in Childhood Hematological Cancer. Int J Mol Sci 2018; 19:ijms19092688. [PMID: 30201877 PMCID: PMC6165337 DOI: 10.3390/ijms19092688] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 09/03/2018] [Accepted: 09/08/2018] [Indexed: 12/14/2022] Open
Abstract
For decades, cancer biology focused largely on the protein-encoding genes that have clear roles in tumor development or progression: cell-cycle control, apoptotic evasion, genome instability, drug resistance, or signaling pathways that stimulate growth, angiogenesis, or metastasis. MicroRNAs (miRNAs), however, represent one of the more abundant classes of cell modulators in multicellular organisms and largely contribute to regulating gene expression. Many of the ~2500 miRNAs discovered to date in humans regulate vital biological processes, and their aberrant expression results in pathological and malignant outcomes. In this review, we highlight what has been learned about the roles of miRNAs in some of the most common human pediatric leukemias and lymphomas, along with their value as diagnostic/prognostic factors.
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Affiliation(s)
| | - Gabriela Molinari Roberto
- Department of Pediatrics, Ribeirão Preto School of Medicine, University of São Paulo, 14049-900 Ribeirão Preto, Brazil.
| | - Mirella Baroni
- Department of Pediatrics, Ribeirão Preto School of Medicine, University of São Paulo, 14049-900 Ribeirão Preto, Brazil.
| | - Karina Bezerra Salomão
- Department of Pediatrics, Ribeirão Preto School of Medicine, University of São Paulo, 14049-900 Ribeirão Preto, Brazil.
| | - Julia Alejandra Pezuk
- Programa de Pós-graduação em Farmácia, Anhanguera University of São Paulo, UNIAN/SP, 05145-200 São Paulo, Brazil.
| | - María Sol Brassesco
- Departamento de Biologia, Faculty of Philosophy, Sciences and Letters at Ribeirão Preto, University of São Paulo, 14040-901 Ribeirão Preto, Brazil.
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Narayan N, Bracken CP, Ekert PG. MicroRNA-155 expression and function in AML: An evolving paradigm. Exp Hematol 2018; 62:1-6. [PMID: 29601851 DOI: 10.1016/j.exphem.2018.03.007] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 03/22/2018] [Accepted: 03/23/2018] [Indexed: 02/07/2023]
Abstract
Acute myeloid leukemia (AML) arises when immature myeloid blast cells acquire multiple, recurrent genetic and epigenetic changes that result in dysregulated proliferation. Acute leukemia is the most common form of pediatric cancer, with AML accounting for ~20% of all leukemias in children. The genomic aberrations that drive AML inhibit myeloid differentiation and activate signal transduction pathways that drive proliferation. MicroRNAs, a class of small (~22 nucleotide) noncoding RNAs that posttranscriptionally suppress the expression of specifically targeted transcripts, are also frequently dysregulated in AML, which may prove useful for the purposes of disease classification, prognosis, and future therapeutic approaches. MicroRNA expression profiles are associated with patient prognosis and responses to standard chemotherapy, including predicting therapy resistance in AML. miR-155 is the primary focus of this review because it has been repeatedly associated with poorer survival across multiple cohorts of adult and pediatric AML. We discuss some novel features of miR-155 expression in AML, in particular how the levels of expression can critically influence function. Understanding the role of microRNAs in AML and the ways in which microRNA expression influences AML biology is one means to develop novel and more targeted therapies.
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Affiliation(s)
- Nisha Narayan
- Murdoch Childrens Research Institute, Parkville, 3052, Australia
| | - Cameron P Bracken
- Centre for Cancer Biology, SA Pathology and University of South Australia, Adelaide, SA 5000, Australia
| | - Paul G Ekert
- Murdoch Childrens Research Institute, Parkville, 3052, Australia.
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Obulkasim A, Katsman-Kuipers JE, Verboon L, Sanders M, Touw I, Jongen-Lavrencic M, Pieters R, Klusmann JH, Michel Zwaan C, van den Heuvel-Eibrink MM, Fornerod M. Classification of pediatric acute myeloid leukemia based on miRNA expression profiles. Oncotarget 2018; 8:33078-33085. [PMID: 28380436 PMCID: PMC5464851 DOI: 10.18632/oncotarget.16525] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2016] [Accepted: 03/01/2017] [Indexed: 12/28/2022] Open
Abstract
Pediatric acute myeloid leukemia (AML) is a heterogeneous disease with respect to biology as well as outcome. In this study, we investigated whether known biological subgroups of pediatric AML are reflected by a common microRNA (miRNA) expression pattern. We assayed 665 miRNAs on 165 pediatric AML samples. First, unsupervised clustering was performed to identify patient clusters with common miRNA expression profiles. Our analysis unraveled 14 clusters, seven of which had a known (cyto-)genetic denominator. Finally, a robust classifier was constructed to discriminate six molecular aberration groups: 11q23-rearrangements, t(8;21)(q22;q22), inv(16)(p13q22), t(15;17) (q21;q22), NPM1 and CEBPA mutations. The classifier achieved accuracies of 89%, 95%, 95%, 98%, 91% and 96%, respectively. Although lower sensitivities were obtained for the NPM1 and CEBPA (32% and 66%), relatively high sensitivities (84%−94%) were attained for the rest. Specificity was high in all groups (87%−100%). Due to a robust double-loop cross validation procedure employed, the classifier only employed 47 miRNAs to achieve the aforementioned accuracies. To validate the 47 miRNA signatures, we applied them to a publicly available adult AML dataset. Albeit partial overlap of the array platforms and molecular differences between pediatric and adult AML, the signatures performed reasonably well. This corroborates our claim that the identified miRNA signatures are not dominated by sample size bias in the pediatric AML dataset. In conclusion, cytogenetic subtypes of pediatric AML have distinct miRNA expression patterns. Reproducibility of the miRNA signatures in adult dataset suggests that the respective aberrations have a similar biology both in pediatric and adult AML.
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Affiliation(s)
- Askar Obulkasim
- Pediatric Oncology-Hematology, Erasmus MC, Sophia Children's Hospital, The Netherlands
| | | | - Lonneke Verboon
- Pediatric Oncology-Hematology, Erasmus MC, Sophia Children's Hospital, The Netherlands
| | - Mathijs Sanders
- Department of Hematology, ErasmusMC, Rotterdam, The Netherlands
| | - Ivo Touw
- Department of Hematology, ErasmusMC, Rotterdam, The Netherlands
| | | | - Rob Pieters
- Pediatric Oncology-Hematology, Erasmus MC, Sophia Children's Hospital, The Netherlands.,Prinses Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - Jan-Henning Klusmann
- Department of Pediatric Hematology and Oncology, Hannover Medical School, Hannover, German
| | - C Michel Zwaan
- Pediatric Oncology-Hematology, Erasmus MC, Sophia Children's Hospital, The Netherlands
| | - Marry M van den Heuvel-Eibrink
- Pediatric Oncology-Hematology, Erasmus MC, Sophia Children's Hospital, The Netherlands.,Prinses Máxima Center for Pediatric Oncology, Utrecht, The Netherlands
| | - Maarten Fornerod
- Pediatric Oncology-Hematology, Erasmus MC, Sophia Children's Hospital, The Netherlands
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14
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Kumar S, Bakhshi S. Diagnostic & prognostic role of microRNAs in paediatric acute myeloid leukaemia. Indian J Med Res 2018; 144:807-814. [PMID: 28474617 PMCID: PMC5433273 DOI: 10.4103/ijmr.ijmr_220_15] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Dysregulation in microRNAs (miRNAs) expression has been observed in distinct acute myeloid leukaemia (AML) subtypes, and their potential as an effective diagnostic and prognostic biomarker is slowly being realized. Certain miRNAs have been found to be associated with various cytogenetic and molecular abnormalities of prognostic significance in AML. Experimental evidences have indicated the potential of modulating miRNA expression as an effective antileukaemic strategy. This has opened a new window for miRNAs-based targeted therapies. In this review, we present results of some studies analyzing the dysregulation in miRNAs expression pattern in paediatric AML and also discuss their use as diagnostic and prognostic markers.
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Affiliation(s)
- Sachin Kumar
- Department of Medical Oncology, Dr B. R. Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
| | - Sameer Bakhshi
- Department of Medical Oncology, Dr B. R. Ambedkar Institute Rotary Cancer Hospital, All India Institute of Medical Sciences, New Delhi, India
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15
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Xu L, Guo Y, Yan W, Cen J, Niu Y, Yan Q, He H, Chen CS, Hu S. High level of miR-196b at newly diagnosed pediatric acute myeloid leukemia predicts a poor outcome. EXCLI JOURNAL 2017; 16:197-209. [PMID: 28507466 PMCID: PMC5427473 DOI: 10.17179/excli2016-707] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Accepted: 02/10/2017] [Indexed: 12/19/2022]
Abstract
Differential expression of microRNAs (miRNAs) has been implicated in leukemogenesis. We investigate the expression pattern of miR-196b. Using quantitative real-time PCR (qRT-PCR), we detected the expression of miR-196b and its correlated genes (SMC1A/MLH1) in initial pediatric AML. A significant association was observed between overexpression of miR-196b and inferior overall survival of pediatric AML (Log Rank P<0.0001). AML M4/5 subtype, high white blood cell (WBC) count at presentation, MLL rearrangement, or FLT3-ITD mutation at diagnosis and non-remission group after the first induction chemotherapy possessed higher miR-196b expression. Furthermore, a positive relationship was found between the expression of miR-196b and SMC1A/MLH1 (Spearman's r=0.37 and 0.44, P=0.001 and <0.0001, respectively). Taken together, these findings suggest that differentially high expression of miR-196b in diagnostic marrow samples of pediatric AML is associated with unfavorable outcome, and miR-196b potentially can be a novel biomarker for the diagnosis, prognosis and treatment in pediatric AML.
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Affiliation(s)
- Lihua Xu
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou 215003, Jiangsu, China.,Department of Pediatrics, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Yang Guo
- Department of Pediatrics, Shanghai East Hospital, Tongji University School of Medicine, Shanghai 200120, China
| | - Wenying Yan
- Center for Systems Biology, Soochow University, Suzhou, 215006, Jiangsu, China
| | - Jiannong Cen
- The First Affiliated Hospital of Soochow University, Suzhou, 215006, Jiangsu, China
| | - Yuna Niu
- School of Laboratory Medicine, Xinxiang Medical University, Xinxiang, 453003, Henan, China
| | - Qing Yan
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou 215003, Jiangsu, China
| | - Hailong He
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou 215003, Jiangsu, China
| | - Chien-Shing Chen
- Department of Internal Medicine, Division of Hematology and Medical Oncology & Biospecimen Laboratory, Loma Linda University, Loma Linda, CA 92350, USA
| | - Shaoyan Hu
- Department of Hematology and Oncology, Children's Hospital of Soochow University, Suzhou 215003, Jiangsu, China
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16
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Labib HA, Elantouny NG, Ibrahim NF, Alnagar AA. Upregulation of microRNA-21 is a poor prognostic marker in patients with childhood B cell acute lymphoblastic leukemia. Hematology 2017; 22:392-397. [DOI: 10.1080/10245332.2017.1292204] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Affiliation(s)
| | - Neveen G. Elantouny
- Internal Medicine Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Nevin F. Ibrahim
- Internal Medicine Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Ahmed A. Alnagar
- Medical Oncology Department, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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17
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Over-expression of miR-196b-5p is significantly associated with the progression of myelodysplastic syndrome. Int J Hematol 2017; 105:777-783. [PMID: 28224273 DOI: 10.1007/s12185-017-2201-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2016] [Revised: 02/14/2017] [Accepted: 02/14/2017] [Indexed: 12/14/2022]
Abstract
Myelodysplastic syndrome (MDS) is a clonal stem cell disorder characterized by ineffective hematopoiesis with a high risk of transformation to acute myeloid leukemia (AML). miRNAs function as tumor suppressors and oncogenes in various cancers and regulate the differentiation potential of hematopoietic stem and progenitor cells (HSPCs). It has been suggested that miRNAs may play an important role in progression of MDS. We analyzed bone marrow samples collected from MDS patients according to different risk stratification indicated by the International Prognostic Scoring System (IPSS). We demonstrated that miR-196b-5p was up-regulated in intermediate II and higher groups, and in secondary AML (s-AML) patients in particular (P < 0.01) compared with healthy controls, suggesting that the higher expression levels are associated with increased risk of the development of MDS. We observed changes in proliferation and apoptosis in MDS-L cells following transfection with miR-196-5p mimics or inhibitors. After up-regulating the expression of miR-196b-5p, proliferation of MDS-L cells was up-regulated, whereas apoptosis was down-regulated (P < 0.05). In contrast, down-regulation of miR-196b-5p expression decreased cell proliferation and increased apoptosis (P < 0.05). We concluded that over-expression of miR-196b-5p may be closely associated with the risk of transformation to leukemia in MDS patients.
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18
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Functionally distinct roles for different miR-155 expression levels through contrasting effects on gene expression, in acute myeloid leukaemia. Leukemia 2016; 31:808-820. [PMID: 27740637 DOI: 10.1038/leu.2016.279] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2016] [Revised: 08/26/2016] [Accepted: 09/06/2016] [Indexed: 12/18/2022]
Abstract
Enforced expression of microRNA-155 (miR-155) in myeloid cells has been shown to have both oncogenic or tumour-suppressor functions in acute myeloid leukaemia (AML). We sought to resolve these contrasting effects of miR-155 overexpression using murine models of AML and human paediatric AML data sets. We show that the highest miR-155 expression levels inhibited proliferation in murine AML models. Over time, enforced miR-155 expression in AML in vitro and in vivo, however, favours selection of intermediate miR-155 expression levels that results in increased tumour burden in mice, without accelerating the onset of disease. Strikingly, we show that intermediate and high miR-155 expression also regulate very different subsets of miR-155 targets and have contrasting downstream effects on the transcriptional environments of AML cells, including genes involved in haematopoiesis and leukaemia. Furthermore, we show that elevated miR-155 expression detected in paediatric AML correlates with intermediate and not high miR-155 expression identified in our experimental models. These findings collectively describe a novel dose-dependent role for miR-155 in the regulation of AML, which may have important therapeutic implications.
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19
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MicroRNA-183 promotes cell proliferation via regulating programmed cell death 6 in pediatric acute myeloid leukemia. J Cancer Res Clin Oncol 2016; 143:169-180. [DOI: 10.1007/s00432-016-2277-2] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 09/21/2016] [Indexed: 10/20/2022]
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20
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Li X, Zhong H. The diagnosis, prognosis, and therapeutic application of MicroRNAs in haematological malignancies. ACTA ACUST UNITED AC 2016; 21:263-71. [PMID: 26907667 DOI: 10.1080/10245332.2015.1114766] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
OBJECTIVE MicroRNAs (miRNAs) are small noncoding RNA molecules that participate in vital cell processes such as proliferation, apoptosis, and differentiation. In recent years, they have been proven to play vital roles in haematological malignancies. In this review we briefly introduce some basic knowledge of microRNAs and summarize their ectopic expression in haematological malignancies, especially in leukaemia. We will also discuss the potential of microRNAs in the diagnosis of leukaemia, in the determination of the clinical prognosis of diverse subtypes, and in targeted therapy. DISCUSSION Despite current adoption of novel biological agents combining traditional chemotherapy regimens, leukaemia remains to have undesirable clinical outcomes due to inaccurate diagnosis, invasiveness of the disease, and patients' intolerance to chemotherapy, thus brand new therapeutic directions are urgently needed. MiRNAs regulate gene expression by means of binding to the 3'-untranslated regions of corresponding mRNAs, leading to the degradation of targeted mRNA or the inhibition of translation. It has been confirmed that they can either function as tumour inhibitors, or may trigger tumourigenesis in certain situations, this specific dual characteristic undoubtedly attract scientists to explore their roles in haematological malignancies. It is of great necessity to summarize the roles of miRNAs in haematological malignancies diagnosis, prognosis evaluation, and clinical treatment. CONCLUSIONS Future studies may take full advantage of miRNAs detection in diagnosing, in choosing targeted biological therapy, and in avoiding predictable side effect, thus the overall survival rate and cure efficiency of leukaemia should improve.
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Affiliation(s)
- Xin Li
- a Department of Hematology, Ren Ji Hospital, School of Medicine , Shanghai Jiao Tong University , P.R. China
| | - Hua Zhong
- a Department of Hematology, Ren Ji Hospital, School of Medicine , Shanghai Jiao Tong University , P.R. China
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21
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Swellam M, El-Khazragy N. Clinical impact of circulating microRNAs as blood-based marker in childhood acute lymphoblastic leukemia. Tumour Biol 2016; 37:10571-6. [PMID: 26857279 DOI: 10.1007/s13277-016-4948-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2015] [Accepted: 01/29/2016] [Indexed: 01/03/2023] Open
Abstract
Aberrant microRNA (miRNA) expression participates in childhood acute lymphoblastic leukemia (ALL). This study aimed to investigate the expression of miRNA-100, miRNA-196a, and miRNA-146a among childhood ALL and study their correlation with other hematological parameters and different phenotypes. Peripheral blood mononuclear cells (PMNCs) were obtained from 85 childhood ALL and 25 healthy children for the detection of miRNA expression using quantitative real-time PCR. Significant higher median levels were reported for ALL compared to control children. The diagnostic efficacy for miRNA-146a was superior as both sensitivity and specificity were absolute. A significant correlation was observed between higher expression of miRNA-100 and lower platelet and lymphocyte counts; high expression of miRNA-146a showed significant correlation with low total leukocyte count (TLC) and lymphocyte counts. Significant relation was reported between studied miRNAs and different phenotyping. miRNA-100, miRNA-196a, and miRNA-146a have significant role in childhood ALL leukemogenesis, and they may be useful as biological diagnostic molecular markers.
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Affiliation(s)
- Menha Swellam
- Department of Biochemistry, Genetic Engineering and Biotechnology Research Division, National Research Centre, Giza, 12622, Dokki, Egypt.
| | - Nashwa El-Khazragy
- Department of Clinical Pathology, Oncology Diagnostic Unit, Faculty of Medicine, Ain Shams University, Cairo, Egypt
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22
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Dicer1 imparts essential survival cues in Notch-driven T-ALL via miR-21-mediated tumor suppressor Pdcd4 repression. Blood 2015; 126:993-1004. [PMID: 25979949 DOI: 10.1182/blood-2014-12-618892] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2014] [Accepted: 05/07/2015] [Indexed: 02/07/2023] Open
Abstract
The modulatory function of individual microRNAs (miRNAs) in Notch-driven T-cell acute lymphoblastic leukemias (T-ALLs) has recently been established. Although protumorigenic and tumor-suppressive miRNAs are implicated in disease onset in murine models of Notch-driven T-cell leukemia, whether Dicer1-processed miRNAs are essential for Notch-driven T-ALL is currently unknown. Here we used conditional and inducible genetic loss-of-function approaches to test whether the development and maintenance of Notch-driven T-ALL was dependent on Dicer1 function. Mice with specific inactivation of both Dicer1 alleles in the T-cell lineage did not develop Notch-driven T-ALL. In contrast, loss of 1 functional Dicer1 allele did not significantly perturb T-ALL onset and tumor progression. Inducible inactivation of Dicer1 in early stage polyclonal T-ALL cells was sufficient to abrogate T-ALL progression in leukemic mice, whereas late-stage monoclonal T-ALL cells were counterselected against loss of Dicer1. Lineage-tracing experiments revealed that Dicer1 deficiency led to the induction of apoptosis in T-ALL cells, whereas cell cycle progression remained unaltered. Through microarray-based miRNA profiling, we identified miR-21 as a previously unrecognized miRNA deregulated in both mouse and human T-ALL. Herein, we demonstrate that miR-21 regulates T-ALL cell survival via repression of the tumor suppressor Pdcd4.
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23
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Adamaki M, Lambrou GI, Athanasiadou A, Vlahopoulos S, Papavassiliou AG, Moschovi M. HOXA9 and MEIS1 gene overexpression in the diagnosis of childhood acute leukemias: Significant correlation with relapse and overall survival. Leuk Res 2015; 39:874-82. [PMID: 26059450 DOI: 10.1016/j.leukres.2015.04.012] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 02/19/2015] [Accepted: 04/19/2015] [Indexed: 11/29/2022]
Abstract
Homeobox genes HOXA9 and MEIS1 are evolutionarily conserved transcription factors with essential roles in both hematopoiesis and leukemogenesis. They act as dominant cooperating oncoproteins that cause acute leukemias bearing MLL translocations and to a lesser extent T-cell acute lymphocytic leukemia (ALL) characterized by other gene fusions. Overexpression is associated with an adverse prognosis in adults. In childhood, the genes have only been investigated in leukemias bearing MLL translocations. The aim of this study was to determine whether overexpression extends to leukemic subtypes other than the MLL-positive subtype in childhood. We use quantitative real-time PCR methodology to investigate gene expression in 100 children with acute leukemias and compare them to those of healthy controls. We show that abnormally high HOXA9 and MEIS1 gene expression is associated with a variety of leukemic subtypes, including various maturation stages of B-cell ALL and cytogenetic types other than the MLL-positive population, thus suggesting that the genes are implicated in the development of a broad range of leukemic subtypes in childhood. In addition, we show that HOXA9 and MEIS1 overexpression are inversely correlated with relapse and overall survival, so the genes could become useful predictive markers of the clinical course of pediatric acute leukemias.
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Affiliation(s)
- Maria Adamaki
- Pediatric Hematology/Oncology Unit, First Department of Pediatrics, University of Athens, "Aghia Sofia" Children's Hospital, 11527 Athens, Greece.
| | - George I Lambrou
- Pediatric Hematology/Oncology Unit, First Department of Pediatrics, University of Athens, "Aghia Sofia" Children's Hospital, 11527 Athens, Greece
| | - Anastasia Athanasiadou
- Pediatric Hematology/Oncology Unit, First Department of Pediatrics, University of Athens, "Aghia Sofia" Children's Hospital, 11527 Athens, Greece
| | - Spiros Vlahopoulos
- Pediatric Hematology/Oncology Unit, First Department of Pediatrics, University of Athens, "Aghia Sofia" Children's Hospital, 11527 Athens, Greece
| | | | - Maria Moschovi
- Pediatric Hematology/Oncology Unit, First Department of Pediatrics, University of Athens, "Aghia Sofia" Children's Hospital, 11527 Athens, Greece
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24
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Darda L, Hakami F, Morgan R, Murdoch C, Lambert DW, Hunter KD. The role of HOXB9 and miR-196a in head and neck squamous cell carcinoma. PLoS One 2015; 10:e0122285. [PMID: 25860510 PMCID: PMC4393232 DOI: 10.1371/journal.pone.0122285] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 02/10/2015] [Indexed: 01/14/2023] Open
Abstract
Background Previous studies have demonstrated that a number of HOX genes, a family of transcription factors with key roles in early development, are up-regulated in head and neck squamous cell carcinoma (HNSCC) and other cancers. The loci of several Homeobox (HOX) genes also contain microRNAs (miRs), including miR-196a. Methods Global miR expression and expression of all 39 HOX genes in normal oral keratinocytes (NOKs), oral pre-malignant (OPM) and HNSCC cells was assessed by expression microarray and qPCR and in tissues by immunohistochemistry (IHC) and qPCR of laser microdissected (LCM) tissues. Expression of miR196a and HOXB9 was reduced using anti-miR-196a and siRNA, respectively. Expression microarray profiles of anti-miR196a and pre-miR196a transfected cells were compared to parental cells in order to identify novel targets of miR-196a. Putative miR196a targets were validated by qPCR and were confirmed as binding to the 3’UTR of miR196a by a dual luciferase reporter assay combined with mutational analysis of the miR-196a binding site. Results miR-196a and HOXB9 are highly expressed in HNSCC compared to NOKs, a pattern also seen in HNSCC tissues by HOXB9 IHC and qPCR of miR-196a in LCM tissue. Knock-down of miR-196a expression decreased HNSCC cell migration, invasion and adhesion to fibronectin, but had no effect on proliferation. Furthermore, knock-down of HOXB9 expression decreased migration, invasion and proliferation but did not alter adhesion. We identified a novel primary mRNA transcript containing HOXB9 and miR196a-1 as predicted from in-silico analysis. Expression array analysis identified a number of miR196a targets, including MAMDC2 and HOXC8. We confirmed that MAMDC2 is a novel miR-196a target using a dual luciferase reporter assay with the effect abolished on mutation of the binding site. Conclusions These results show that miR-196a and HOXB9 are overexpressed, perhaps co-ordinately, as HNSCC develops and exert a pro-tumourigenic phenotype in HNSCC and OPM cells.
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Affiliation(s)
- Lav Darda
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
| | - Fahad Hakami
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
| | - Richard Morgan
- Institute of Cancer Therapeutics, University of Bradford, Bradford, United Kingdom
| | - Craig Murdoch
- Unit of Oral and Maxillofacial Medicine & Surgery, School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
| | - Daniel W. Lambert
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
| | - Keith D. Hunter
- Unit of Oral and Maxillofacial Pathology, School of Clinical Dentistry, University of Sheffield, Sheffield, United Kingdom
- Department of Oral Pathology and Biology, University of Pretoria, Pretoria, South Africa
- * E-mail:
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Abstract
Pediatric acute myeloid leukemia (AML) represents 15%-20% of all pediatric acute leukemias. Survival rates have increased over the past few decades to ~70%, due to improved supportive care, optimized risk stratification and intensified chemotherapy. In most children, AML presents as a de novo entity, but in a minority, it is a secondary malignancy. The diagnostic classification of pediatric AML includes a combination of morphology, cytochemistry, immunophenotyping and molecular genetics. Outcome is mainly dependent on the initial response to treatment and molecular and cytogenetic aberrations. Treatment consists of a combination of intensive anthracycline- and cytarabine-containing chemotherapy and stem cell transplantation in selected genetic high-risk cases or slow responders. In general, ~30% of all pediatric AML patients will suffer from relapse, whereas 5%-10% of the patients will die due to disease complications or the side-effects of the treatment. Targeted therapy may enhance anti-leukemic efficacy and minimize treatment-related morbidity and mortality, but requires detailed knowledge of the genetic abnormalities and aberrant pathways involved in leukemogenesis. These efforts towards future personalized therapy in a rare disease, such as pediatric AML, require intensive international collaboration in order to enhance the survival rates of pediatric AML, while aiming to reduce long-term toxicity.
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26
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de Rooij JDE, Zwaan CM, van den Heuvel-Eibrink M. Pediatric AML: From Biology to Clinical Management. J Clin Med 2015; 4:127-49. [PMID: 26237023 PMCID: PMC4470244 DOI: 10.3390/jcm4010127] [Citation(s) in RCA: 113] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Accepted: 11/28/2014] [Indexed: 12/25/2022] Open
Abstract
Pediatric acute myeloid leukemia (AML) represents 15%–20% of all pediatric acute leukemias. Survival rates have increased over the past few decades to ~70%, due to improved supportive care, optimized risk stratification and intensified chemotherapy. In most children, AML presents as a de novo entity, but in a minority, it is a secondary malignancy. The diagnostic classification of pediatric AML includes a combination of morphology, cytochemistry, immunophenotyping and molecular genetics. Outcome is mainly dependent on the initial response to treatment and molecular and cytogenetic aberrations. Treatment consists of a combination of intensive anthracycline- and cytarabine-containing chemotherapy and stem cell transplantation in selected genetic high-risk cases or slow responders. In general, ~30% of all pediatric AML patients will suffer from relapse, whereas 5%–10% of the patients will die due to disease complications or the side-effects of the treatment. Targeted therapy may enhance anti-leukemic efficacy and minimize treatment-related morbidity and mortality, but requires detailed knowledge of the genetic abnormalities and aberrant pathways involved in leukemogenesis. These efforts towards future personalized therapy in a rare disease, such as pediatric AML, require intensive international collaboration in order to enhance the survival rates of pediatric AML, while aiming to reduce long-term toxicity.
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Affiliation(s)
- Jasmijn D E de Rooij
- Department of Pediatric Oncology, Erasmus MC-Sophia Children's Hospital, 3015CN Rotterdam, The Netherlands.
| | - C Michel Zwaan
- Department of Pediatric Oncology, Erasmus MC-Sophia Children's Hospital, 3015CN Rotterdam, The Netherlands.
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27
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Lin X, Wang Z, Zhang R, Feng W. High serum microRNA-335 level predicts aggressive tumor progression and unfavorable prognosis in pediatric acute myeloid leukemia. Clin Transl Oncol 2014; 17:358-64. [PMID: 25301405 DOI: 10.1007/s12094-014-1237-z] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2014] [Accepted: 09/24/2014] [Indexed: 12/26/2022]
Abstract
PURPOSE MiRNA expression profiles previously showed the higher expression of microRNA(miR)-335 in bone marrow samples of pediatric acute myeloid leukemia (AML) patients than normal controls. Our aim was to investigate associations of miR-335 expression with tumor progression and prognosis in pediatric AML. METHODS Real-time quantitative PCR was performed to detect the expression of miR-335 in bone marrow mononuclear cells and serum obtained from patients with pediatric AML and healthy controls. RESULTS Expression levels of miR-335 in the bone marrow and serum of pediatric AML patients were both significantly higher than those in normal controls (both P < 0.001). Then, high serum miR-335 level occurred more frequently in French-American-British classification subtype M7 subtype than in other subtypes (P = 0.03). The expression of serum miR-335 in pediatric AML patients with unfavorable karyotypes was also significantly higher than those in intermediate and favorable groups (P = 0.008). Moreover, high serum miR-335 level was markedly associated with shorter relapse-free and overall survivals (both P < 0.001) of patients with pediatric AML. Furthermore, the multivariate analysis identified the serum miR-335 and cytogenetics risk as independent prognostic factors for both relapse-free and overall survivals. More importantly, the prognostic relevance of serum miR-335 expression was more obvious in the subgroup of patients with intermediate-risk cytogenetics. CONCLUSION Our data offer the convincing evidence for the first time that serum miR-335 level may be markedly and consistently increased in pediatric AML patients. Serum miR-335 may serve as a promising marker for monitoring the progression and predicting the clinical outcome of patients with this disease.
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MESH Headings
- Adolescent
- Bone Marrow/pathology
- Case-Control Studies
- Child
- Child, Preschool
- Disease Progression
- Disease-Free Survival
- Female
- Humans
- Karyotype
- Leukemia, Myeloid, Acute/blood
- Leukemia, Myeloid, Acute/classification
- Leukemia, Myeloid, Acute/genetics
- Leukemia, Myeloid, Acute/therapy
- Leukocytes, Mononuclear/metabolism
- Male
- MicroRNAs/blood
- Predictive Value of Tests
- Prognosis
- Real-Time Polymerase Chain Reaction
- Survival Rate
- Up-Regulation
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Affiliation(s)
- X Lin
- Department of Paediatric Intensive Care Units, Huai'an Maternity and Child Health Hospital of Yangzhou University, Huai'an, 223002, Jiangsu Province, China
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28
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Braekeleer ED, Douet-Guilbert N, Basinko A, Bris MJL, Morel F, Braekeleer MD. Hox gene dysregulation in acute myeloid leukemia. Future Oncol 2014; 10:475-95. [DOI: 10.2217/fon.13.195] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
ABSTRACT: In humans, class I homeobox genes (HOX genes) are distributed in four clusters. Upstream regulators include transcriptional activators and members of the CDX family of transcription factors. HOX genes encode proteins and need cofactor interactions, to increase their specificity and selectivity. HOX genes contribute to the organization and regulation of hematopoiesis by controlling the balance between proliferation and differentiation. Changes in HOX gene expression can be associated with chromosomal rearrangements generating fusion genes, such as those involving MLL and NUP98, or molecular defects, such as mutations in NPM1 and CEBPA for example. Several miRNAs are involved in the control of HOX gene expression and their expression correlates with HOX gene dysregulation. HOX genes dysregulation is a dominant mechanism of leukemic transformation. A better knowledge of their target genes and the mechanisms by which their dysregulated expression contributes to leukemogenesis could lead to the development of new drugs.
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Affiliation(s)
- Etienne De Braekeleer
- Laboratoire d’Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Brest, Brest, France
| | - Nathalie Douet-Guilbert
- Laboratoire d’Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Brest, Brest, France
| | - Audrey Basinko
- Laboratoire d’Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Brest, Brest, France
| | - Marie-Josée Le Bris
- Service de Cytogénétique, Cytologie et Biologie de la Reproduction, Hôpital Morvan, CHRU Brest, Brest, France
| | - Frédéric Morel
- Laboratoire d’Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Brest, Brest, France
| | - Marc De Braekeleer
- Laboratoire d’Histologie, Embryologie et Cytogénétique, Faculté de Médecine et des Sciences de la Santé, Université de Brest, Brest, France
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miR-9 is a tumor suppressor in pediatric AML with t(8;21). Leukemia 2013; 28:1022-32. [PMID: 24270738 DOI: 10.1038/leu.2013.357] [Citation(s) in RCA: 63] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2013] [Revised: 11/13/2013] [Accepted: 11/14/2013] [Indexed: 12/12/2022]
Abstract
MicroRNAs (miRNAs) play a pivotal role in the regulation of hematopoiesis and development of leukemia. Great interest emerged in modulating miRNA expression for therapeutic purposes. In order to identify miRNAs, which specifically suppress leukemic growth of acute myeloid leukemia (AML) with t(8;21), inv(16) or mixed lineage leukemia (MLL) rearrangement by inducing differentiation, we conducted a miRNA expression profiling in a cohort of 90 cytogenetically characterized, de novo pediatric AML cases. Four miRNAs, specifically downregulated in MLL-rearranged, t(8;21) or inv(16) AMLs, were characterized by their tumor-suppressive properties in cell lines representing those respective cytogenetic groups. Among those, forced expression of miR-9 reduced leukemic growth and induced monocytic differentiation of t(8;21) AML cell lines in vitro and in vivo. The tumor-suppressive functions of miR-9 were specifically restricted to AML cell lines and primary leukemic blasts with t(8;21). On the other hand, these functions were not evident in AML blasts from patients with MLL rearrangements. We showed that miR-9 exerts its effects through the cooperation with let-7 to repress the oncogenic LIN28B/HMGA2 axis. Thus, miR-9 is a tumor suppressor-miR which acts in a stringent cell context-dependent manner.
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MicroRNA expression at diagnosis adds relevant prognostic information to molecular categorization in patients with intermediate-risk cytogenetic acute myeloid leukemia. Leukemia 2013; 28:804-12. [PMID: 24072101 DOI: 10.1038/leu.2013.281] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2013] [Revised: 08/09/2013] [Accepted: 09/13/2013] [Indexed: 11/12/2022]
Abstract
Acute myeloid leukemia (AML) is a heterogeneous disease, and optimal treatment varies according to cytogenetic risk factors and molecular markers. Several studies have demonstrated the prognostic importance of microRNAs (miRNAs) in AML. Here we report a potential association between miRNA expression and clinical outcome in 238 intermediate-risk cytogenetic AML (IR-AML) patients from 16 institutions in the CETLAM cooperative group. We first profiled 670 miRNAs in a subset of 85 IR-AML patients from a single institution and identified 10 outcome-related miRNAs. We then validated these 10 miRNAs by individual assays in the total cohort and confirmed the prognostic impact of 4 miRNAs. High levels of miR-196b and miR-644 were independently associated with shorter overall survival, and low levels of miR-135a and miR-409-3p with a higher risk of relapse. Interestingly, miR-135a and miR-409-3p maintained their independent prognostic value within the unfavorable molecular subcategory (wild-type NPM1 and CEBPA and/or FLT3-ITD), and miR-644 retained its value within the favorable molecular subcategory. miR-409-3p, miR-135a, miR-196b and mir-644 arose as prognostic markers for IR-AML, both overall and within specific molecular subgroups.
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Wang Z, Hong Z, Gao F, Feng W. Upregulation of microRNA-375 is associated with poor prognosis in pediatric acute myeloid leukemia. Mol Cell Biochem 2013; 383:59-65. [PMID: 23864342 DOI: 10.1007/s11010-013-1754-z] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2013] [Accepted: 07/03/2013] [Indexed: 12/11/2022]
Abstract
A genome-wide serum miRNA expression analysis previously showed the upregulation of microRNA-375 (miR-375) in acute myeloid leukemia (AML) patients compared with healthy controls. The aim of this study was to investigate the expression patterns and the prognostic relevance of miR-375 in pediatric AML. Expression levels of miR-375 in bone marrow mononuclear cells were detected by real-time quantitative PCR in a cohort of 106 patients with newly diagnosed pediatric AML. Expression levels of miR-375 in the bone marrow of pediatric AML patients were significantly higher than those in normal controls (P < 0.001). Then, miR-375 upregulation occurred more frequently in French-American-British classification subtype M7 than in other subtypes (P < 0.001). Regarding to cytogenetic risk, the expression levels of miR-375 in pediatric AML patients with unfavorable karyotypes were dramatically higher than those in intermediate and favorable groups (P = 0.002). Moreover, high miR-375 expression was significantly associated with shorter relapse-free survival (P < 0.001) and overall survival (P < 0.001) in pediatric AML patients. Multivariate analysis further identified miR-375 expression and cytogenetics risk as independent prognostic factors for both relapse-free survival and overall survival. In particular, the prognostic relevance of miR-375 expression was more obvious in the subgroup of patients with intermediate-risk cytogenetics. Our findings suggest for the first time that the upregulation of miR-375 may be one of the molecular mechanisms involved in the development and progression of pediatric AML. Since its correlation with poor relapse-free survival and overall survival, miR-375 may be a novel biomarker to improve the management of pediatric AML patients.
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Affiliation(s)
- Zhengyan Wang
- Department of Pediatrics, Huai'an Hospital Affiliated of Xuzhou Medical College and Huai'an Second People's Hospital, 62 Huaihai Road South, Huai'an, 223002, P. R. China
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Benetatos L, Vartholomatos G. MicroRNAs mark in the MLL-rearranged leukemia. Ann Hematol 2013; 92:1439-50. [DOI: 10.1007/s00277-013-1803-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Accepted: 05/20/2013] [Indexed: 01/02/2023]
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Abstract
MicroRNAs (miRNAs) are key to the pathogenesis of human malignancies and increasingly recognized as potential biomarkers and therapeutic targets. Haematological malignancies, being the earliest human malignancies linked to aberrant miRNA expression, have consistently underpinned our understanding of the role that miRNAs play in cancer development. Here, we review the expanding roles attributed to miRNAs in the pathogenesis of different types of myeloid malignancies and highlight key findings.
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Affiliation(s)
- Jane E A Gordon
- Gene & Stem Cell Therapy Program, Centenary Institute, Royal Prince Alfred Hospital, Camperdown, NSW, Australia
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Sha S, Gu Y, Xu B, Hu H, Yang Y, Kong X, Wu K. Decreased expression of HOXB9 is related to poor overall survival in patients with gastric carcinoma. Dig Liver Dis 2013; 45:422-9. [PMID: 23332081 DOI: 10.1016/j.dld.2012.12.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/01/2012] [Revised: 11/26/2012] [Accepted: 12/06/2012] [Indexed: 12/11/2022]
Abstract
BACKGROUND Studies have demonstrated the implication of HOXB9 in tumorigenesis, but its role in gastric carcinoma remains unknown. AIMS To investigate the expression and prognostic value of HOXB9 in patients with gastric carcinoma. METHODS The localization and expression of HOXB9 in gastric cancer cells lines were detected by immunofluorescence and western blot. The mRNA and protein expression level of HOXB9 was detected in subjects with gastric carcinoma and paired non-cancerous tissues. Correlation between HOXB9 expression and clinicopathological parameters, the association of HOXB9 expression with the patients' survival rate was also assessed. RESULTS HOXB9 was predominantly localized in the cell nucleus. A significant decrease in HOXB9 intensity in poorly differentiated gastric cancer cells is evident (P<0.01). A lower mRNA and protein expression level of HOXB9 was detected in gastric carcinoma (P<0.01). Decreased expression of HOXB9, poorly differentiation status and the presence of lymph node metastasis predict shorter overall survival (P<0.05). Patients without HOXB9 expression had a lower overall survival rate (P<0.01). Multivariate Cox regression analysis showed HOXB9 was an independent prognostic factor in gastric carcinoma (P<0.01). CONCLUSIONS HOXB9 is down-regulation in gastric carcinoma and may be a novel prognostic marker for poorer clinical outcome for patients with gastric carcinoma.
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Affiliation(s)
- Sumei Sha
- State Key Laboratory of Cancer Biology & Xijing Hospital of Digestive Diseases, The Fourth Military Medical University, Xi'an, Shaanxi Province, PR China.
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Gimenes-Teixeira HL, Lucena-Araujo AR, Dos Santos GA, Zanette DL, Scheucher PS, Oliveira LC, Dalmazzo LF, Silva-Júnior WA, Falcão RP, Rego EM. Increased expression of miR-221 is associated with shorter overall survival in T-cell acute lymphoid leukemia. Exp Hematol Oncol 2013; 2:10. [PMID: 23566596 PMCID: PMC3637292 DOI: 10.1186/2162-3619-2-10] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2013] [Accepted: 04/04/2013] [Indexed: 12/02/2022] Open
Abstract
Background CD56 expression has been associated with a poor prognosis in lymphoid neoplasms, including T-cell acute lymphoblastic leukemia (T-ALL). MicroRNAs (miRNAs) play an important role in lymphoid differentiation, and aberrant miRNA expression has been associated with treatment outcome in lymphoid malignancies. Here, we evaluated miRNA expression profiles in normal thymocytes, mature T-cells, and T-ALL samples with and without CD56 expression and correlated microRNA expression with treatment outcome. Methods The gene expression profile of 164 miRNAs were compared for T-ALL/CD56+ (n=12) and T-ALL/CD56- (n=36) patients by Real-Time Quantitative PCR. Based on this analysis, we decided to evaluate miR-221 and miR-374 expression in individual leukemic and normal samples. Results miR-221 and miR-374 were expressed at significantly higher levels in T-ALL/CD56+ than in T-ALL/CD56- cells and in leukemic blasts compared with normal thymocytes and peripheral blood (PB) T-cells. Age at diagnosis (15 or less vs grater than 15 years; HR: 2.19, 95% CI: 0.98-4.85; P=0.05), miR-221 expression level (median value as cut off in leukemic samples; HR: 3.17, 95% CI: 1.45-6.92; P=0.004), and the expression of CD56 (CD56-vs CD56+; HR: 2.99, 95% CI: 1.37-6.51; P=0.006) were predictive factors for shorter overall survival; whereas, only CD56 expression (HR: 2.73, 95% CI: 1.03-7.18; P=0.041) was associated with a shorter disease-free survival rate. Conclusions miR-221 is highly expressed in T-ALL and its expression level may be associated with a poorer prognosis.
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Affiliation(s)
- Hamilton L Gimenes-Teixeira
- Department of Internal Medicine, Division of Hematology/Oncology, University of São Paulo, Ribeirão Preto, Brazil.
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Daschkey S, Röttgers S, Giri A, Bradtke J, Teigler-Schlegel A, Meister G, Borkhardt A, Landgraf P. MicroRNAs distinguish cytogenetic subgroups in pediatric AML and contribute to complex regulatory networks in AML-relevant pathways. PLoS One 2013; 8:e56334. [PMID: 23418555 PMCID: PMC3572007 DOI: 10.1371/journal.pone.0056334] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2012] [Accepted: 01/08/2013] [Indexed: 01/11/2023] Open
Abstract
Background The role of microRNAs (miRNAs), important post-transcriptional regulators, in the pathogenesis of acute myeloid leukemia (AML) is just emerging and has been mainly studied in adults. First studies in children investigate single selected miRNAs, however, a comprehensive overview of miRNA expression and function in children and young adults is missing so far. Methodology/Principal Findings We here globally identified differentially expressed miRNAs between AML subtypes in a survey of 102 children and adolescent. Pediatric samples with core-binding factor AML and promyelocytic leukemia could be distinguished from each other and from MLL-rearranged AML subtypes by differentially expressed miRNAs including miR-126, -146a, -181a/b, -100, and miR-125b. Subsequently, we established a newly devised immunoprecipitation assay followed by rapid microarray detection for the isolation of Argonaute proteins, the hallmark of miRNA targeting complexes, from cell line models resembling core-binding factor and promyelocytic leukemia. Applying this method, we were able to identify Ago-associated miRNAs and their targeted mRNAs. Conclusions/Significance miRNAs as well as their mRNA-targets showed binding preferences for the different Argonaute proteins in a cell context-dependent manner. Bioinformatically-derived pathway analysis suggested a concerted action of all four Argonaute complexes in the regulation of AML-relevant pathways. For the first time, to our knowledge, a complete AML data set resulting from carefully devised biochemical isolation experiments and analysis of Ago-associated miRNAs and their target-mRNAs is now available.
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Affiliation(s)
- Svenja Daschkey
- Heinrich-Heine University Düsseldorf, Medical Faculty, Clinic for Pediatric Oncology, Hematology and Clinical Immunology, Düsseldorf, Germany
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Dell'aversana C, Altucci L. miRNA-mediated deregulation in leukemia. Front Genet 2012; 3:252. [PMID: 23372573 PMCID: PMC3555518 DOI: 10.3389/fgene.2012.00252] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Accepted: 10/26/2012] [Indexed: 12/23/2022] Open
Abstract
MicroRNAs (miRNAs) are small non-coding RNAs 18–25 nucleotides (nt) long able to
fine-tune post-transcriptional gene expression. Extensive investigation into biogenesis,
mechanism of action and functions of miRNAs has clearly revealed their prompt control in
developmental timing, differentiation, proliferation, cell death, and metabolism.
Deregulation of miRNA-mediated pathways may contribute to pathological conditions such as
tumors, including hematological cancers, thus suggesting that miRNAs act both as
tumor-suppressor genes (TSG) and oncogenes (OG). Here, we provide an overview of the
current understanding of the aberration of miRNA biogenesis, activity, and
post-transcriptional control in leukemogenesis.
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Affiliation(s)
- Carmela Dell'aversana
- Institute of Genetics and Biophysics, Consiglio Nazionale delle Ricerche Naples, Italy ; Department of General Pathology, Second University of Naples Naples, Italy
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Prognostic value of miR-29a expression in pediatric acute myeloid leukemia. Clin Biochem 2012; 46:49-53. [PMID: 22981932 DOI: 10.1016/j.clinbiochem.2012.09.002] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2012] [Revised: 09/01/2012] [Accepted: 09/01/2012] [Indexed: 12/13/2022]
Abstract
OBJECTIVES As a member of miR-29 family, miR-29a can act as either oncogene or tumor suppressor. However, its expression patterns in acute myeloid leukemia (AML) are controversial according to previous studies. Thus, the aim of this study was to determine the expression and clinical significance of miR-29a in pediatric AML. METHODS Expression levels of miR-29a in bone marrow mononuclear cells were detected by real-time quantitative PCR in a cohort of 106 patients with newly diagnosed pediatric AML. The prognostic values of miR-29a in pediatric AML were also analyzed. RESULTS Compared with normal controls, we demonstrated a significantly decreased expression of miR-29a in the bone marrow of pediatric AML patients (P<0.001). The expression levels of miR-29a were significantly lower in French-American-British classification subtype M7 than in other subtypes (P<0.001) and differed significantly across cytogenetic risk groups (P=0.002) with high miR-29a expression among those with favorable karyotypes. Moreover, low miR-29a expression was significantly associated with shorter relapse-free (P<0.001) and overall (P=0.008) survival in pediatric AML patients. Cox proportional hazards multivariate analysis of the univariate predictors identified cytogenetic risk and miR-29a expression as independent prognostic factors for relapse-free survival and overall survival. More interestingly, the prognostic value of miR-29a expression was more obvious in the subgroup of patients with intermediate-risk cytogenetics. CONCLUSION Our data indicate for the first time that the down-regulation of miR-29a was associated with advanced clinical features and poor prognosis of pediatric AML patients, suggesting that miR-29a down-regulation may be used as an unfavorable prognostic marker in pediatric AML.
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Tsai KW, Liao YL, Wu CW, Hu LY, Li SC, Chan WC, Ho MR, Lai CH, Kao HW, Fang WL, Huang KH, Lin WC. Aberrant expression of miR-196a in gastric cancers and correlation with recurrence. Genes Chromosomes Cancer 2012; 51:394-401. [PMID: 22420029 DOI: 10.1002/gcc.21924] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
MicroRNAs (miRNAs) are short noncoding RNAs (~22 nt) that play important roles in the pathogenesis of human diseases by negatively regulating gene expression. Here, we examined the relationship between miR-196a and gastric cancer.By the analysis of 72 gastric cancer samples, we found that the expression level of miR-196a microRNA significantly increased in primary gastric cancer tissues versus adjacent normal tissues. In addition, extracellular miR-196a detected in conditioned medium was strongly correlated with its cellular expression status and increased circulating miR-196a in patient serum was associated with gastric cancer disease status and relapse. Furthermore, ectopic expression of miR-196a microRNA promoted the epithelial-mesenchymal transition and migration/invasion capabilities of transfected cells, suggesting its oncogenic potential in gastric cancer progression. Altogether, our data demonstrate that miR-196a exerts an oncogenic role in gastric cancer and miR-196a may be a novel biomarker for detecting gastric cancer and for monitoring disease recurrence.
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Affiliation(s)
- Kuo-Wang Tsai
- Department of Medical Education and Research, KaohsiungVeterans General Hospital, Kaohsiung, Taiwan, Republic of China
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Agirre X, Martínez-Climent JÁ, Odero MD, Prósper F. Epigenetic regulation of miRNA genes in acute leukemia. Leukemia 2011; 26:395-403. [PMID: 22143672 DOI: 10.1038/leu.2011.344] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
MicroRNAs (miRNAs) are small non-coding RNA molecules that can negatively regulate gene expression at the post-transcriptional level. miRNA expression patterns are regulated during development and differentiation of the hematopoietic system and have an important role in cell processes such as proliferation, apoptosis, differentiation or even in tumorigenesis of human tumors and in particular of hematological malignancies such as acute leukemias. Various miRNAs and their functions have been intensively studied in acute leukemias but the mechanisms that control their expression are largely unknown for the majority of aberrantly expressed miRNAs. miRNA expression can be regulated by the same genetic mechanism that modulate protein coding genes such as mutation, deletion, amplification, loss of heterozygosity and translocations. In this review we focus on the regulation of miRNAs in acute leukemias mediated by alterations in epigenetic mechanisms such as DNA methylation and histone code, describing the role of these alterations in the pathogenesis, diagnosis and prognosis of acute leukemias and their possible use as new therapeutic targets and biomarkers.
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Affiliation(s)
- X Agirre
- Oncology Area, Foundation for Applied Medical Research, University of Navarra, Pamplona, Spain
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Schotte D, Pieters R, Den Boer ML. MicroRNAs in acute leukemia: from biological players to clinical contributors. Leukemia 2011; 26:1-12. [DOI: 10.1038/leu.2011.151] [Citation(s) in RCA: 100] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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