1
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Doghish AS, Elballal MS, Elazazy O, Elesawy AE, Shahin RK, Midan HM, Sallam AAM, Elbadry AM, Mohamed AK, Ishak NW, Hassan KA, Ayoub AM, Shalaby RE, Elrebehy MA. miRNAs as potential game-changers in bone diseases: Future medicinal and clinical uses. Pathol Res Pract 2023; 245:154440. [PMID: 37031531 DOI: 10.1016/j.prp.2023.154440] [Citation(s) in RCA: 12] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Revised: 03/30/2023] [Accepted: 04/02/2023] [Indexed: 04/08/2023]
Abstract
MicroRNAs (miRNAs), short, highly conserved non-coding RNA, influence gene expression by sequential mechanisms such as mRNA breakdown or translational repression. Many biological processes depend on these regulating substances, thus changes in their expression have an impact on the maintenance of cellular homeostasis and result in the emergence of a variety of diseases. Relevant studies have shown in recent years that miRNAs are involved in many stages of bone development and growth. Additionally, abnormal production of miRNA in bone tissues has been closely associated with the development of numerous bone disorders, such as osteonecrosis, bone cancer, and bone metastases. Many pathological processes, including bone loss, metastasis, the proliferation of osteosarcoma cells, and differentiation of osteoblasts and osteoclasts, are under the control of miRNAs. By bringing together the most up-to-date information on the clinical relevance of miRNAs in such diseases, this study hopes to further the study of the biological features of miRNAs in bone disorders and explore their potential as a therapeutic target.
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Yang L, Wu Z, Sun W, Luo P, Chen S, Chen Y, Yan W, Li Y, Wang C. CCNDBP1, a Prognostic Marker Regulated by DNA Methylation, Inhibits Aggressive Behavior in Dedifferentiated Liposarcoma via Repressing Epithelial Mesenchymal Transition. Front Oncol 2021; 11:687012. [PMID: 34631521 PMCID: PMC8493074 DOI: 10.3389/fonc.2021.687012] [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: 03/28/2021] [Accepted: 08/27/2021] [Indexed: 12/24/2022] Open
Abstract
The present study aimed to explore the prognostic value, function, and mechanism of CCNDBP1 in dedifferentiated liposarcoma (DDL). Immunohistochemistry staining was used to analyze the protein expression of CCNDBP1 in tissue specimens. After silencing CCNDBP1 in LPS853 and overexpressing CCNDBP1 in LPS510, CCK-8, clone formation, transwell migration, and invasion assays were used to detect cell proliferation, migration, and invasion ability. CCNDBP1-induced cell apoptosis was analyzed by flow cytometry. The altered expression of epithelial-mesenchymal transition (EMT)-related proteins were detected by Western blot. The methylation, gene expression, and clinical data of 58 samples with DDL were analyzed using the cancer genome atlas (TCGA) database. Low expression of CCNDBP1 was associated with a poor prognosis of patients with DDL and was considered an independent prognostic factor of the progression-free survival (PFS). CCNDBP1 significantly inhibited the clone formation, proliferation, migration, and invasion of cancer cells in vitro and promoted cancer cell apoptosis. CCNDBP1 could repress the pathological EMT, thereby inhibiting the malignant behaviors of DDL cells. The high degree of DNA methylation sites cg05194114 and cg22184989 could decrease the expression of CCNDBP1 and worsen the prognosis of DDL patients. This is the first study reporting that CCNDBP1 is a tumor suppressor gene of DDL and putative prognostic marker in DDL patients. CCNDBP1 might inhibit the ability of cell proliferation and invasion by repressing pathological EMT, and the expression of CCNDBP1 could be regulated by DNA methylation in DDL.
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Affiliation(s)
- Lingge Yang
- Department of Musculoskeletal Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Zhiqiang Wu
- Department of Musculoskeletal Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wei Sun
- Department of Musculoskeletal Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Peng Luo
- Department of Musculoskeletal Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Shiqi Chen
- Department of Musculoskeletal Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yong Chen
- Department of Musculoskeletal Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wangjun Yan
- Department of Musculoskeletal Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Yan Li
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
- Fudan University Shanghai Cancer Center, Key Laboratory of Medical Epigenetics and Metabolism, Institutes of Biomedical Sciences, Fudan University, Shanghai, China
| | - Chunmeng Wang
- Department of Musculoskeletal Oncology, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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3
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Leonardi L, Scotlandi K, Pettinari I, Benassi MS, Porcellato I, Pazzaglia L. MiRNAs in Canine and Human Osteosarcoma: A Highlight Review on Comparative Biomolecular Aspects. Cells 2021; 10:cells10020428. [PMID: 33670554 PMCID: PMC7922516 DOI: 10.3390/cells10020428] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2021] [Revised: 02/10/2021] [Accepted: 02/15/2021] [Indexed: 12/18/2022] Open
Abstract
Osteosarcoma (OS) is the most frequent primary malignant tumor of bone in humans and animals. Comparative oncology is a field of study that examines the cancer risk and tumor progression across the species. The canine model is ideally suited for translational cancer research. The biological and clinical characteristics of human and canine OS are common to hypothesize as that several living and environmental common conditions shared between the two species can influence some etiopathogenetic mechanisms, for which the canine species represents an important model of comparison with the human species. In the canine and human species, osteosarcoma is the tumor of bone with the highest frequency, with a value of about 80–85% (in respect to all other bone tumors), a high degree of invasiveness, and a high rate of metastasis and malignancy. Humans and dogs have many genetic and biomolecular similarities such as alterations in the expression of p53 and in some types of microRNAs that our working group has already described previously in several separate works. In this paper, we report and collect new comparative biomolecular features of osteosarcoma in dogs and humans, which may represent an innovative update on the biomolecular profile of this tumor.
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Affiliation(s)
- Leonardo Leonardi
- Reparto di Patologia Generale e Anatomia Patologica Veterinaria, Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, 06126 Perugia, Italy; (I.P.); (I.P.)
- Correspondence: ; Tel.: +39-075-585-7663
| | - Katia Scotlandi
- Laboratory of experimental Oncology, IRCCS—Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (K.S.); (M.S.B.); (L.P.)
| | - Ilaria Pettinari
- Reparto di Patologia Generale e Anatomia Patologica Veterinaria, Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, 06126 Perugia, Italy; (I.P.); (I.P.)
| | - Maria Serena Benassi
- Laboratory of experimental Oncology, IRCCS—Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (K.S.); (M.S.B.); (L.P.)
| | - Ilaria Porcellato
- Reparto di Patologia Generale e Anatomia Patologica Veterinaria, Dipartimento di Medicina Veterinaria, Università degli Studi di Perugia, 06126 Perugia, Italy; (I.P.); (I.P.)
| | - Laura Pazzaglia
- Laboratory of experimental Oncology, IRCCS—Istituto Ortopedico Rizzoli, 40136 Bologna, Italy; (K.S.); (M.S.B.); (L.P.)
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4
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Wu F, Jiang X, Wang Q, Lu Q, He F, Li J, Li X, Jin M, Xu J. The impact of miR-9 in osteosarcoma: A study based on meta-analysis, TCGA data, and bioinformatics analysis. Medicine (Baltimore) 2020; 99:e21902. [PMID: 32871922 PMCID: PMC7458186 DOI: 10.1097/md.0000000000021902] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
The function of miR-9 in osteosarcoma is not well-investigated and controversial. Therefore, we conducted meta-analysis to explore the role of miR-9 in osteosarcoma, and collected relevant TCGA data to further testify the result. In addition, bioinformatics analysis was conducted to investigate the mechanism and related pathways of miR-9-3p in osteosarcoma.Literature search was operated on databases up to February 19, 2020, including PubMed, Web of Science, Science Direct, Cochrane Central Register of Controlled Trials, and Wiley Online Library, China National Knowledge Infrastructure, China Biology Medicine disc, Chongqing VIP, and Wan Fang Data. The relation of miR-9 expression with survival outcome was estimated by hazard ratio (HRs) and 95% CIs. Meta-analysis was conducted on the Stata 12.0 (Stata Corporation, TX). To further assess the function of miR-9 in osteosarcoma, relevant data from the TCGA database was collected. Three databases, miRDB, miRPathDB 2.0, and Targetscan 7.2, were used for prediction of target genes. Genes present in these 3 databases were considered as predicted target genes of miR-9-3p. Venny 2.1 were used for intersection analysis. Subsequently, GO, KEGG, and PPI network analysis were conducted based on the overlapping target genes of miR-9-3p to explore the possible molecular mechanism in osteosarcoma.Meta-analysis shown that overexpression of miR-9 was associated with worse overall survival (OS) (HR = 4.180, 95% CI: 2.880-6.066, P < .001, I = 23.5%). Based on TCGA data, osteosarcoma patients with overexpression of miR-9-3p (HR = 1.603, 95% CI: 1.028-2.499, P = .037) and miR-9-5p (HR = 1.698, 95% CI: 1.133-2.545, P = .01) also suffered poor OS. In bioinformatics analysis, 2 significant and important pathways were enriched: Wnt signaling pathway from gene ontology analysis (gene ontology:0016055, P-adjust = .008); hippo signaling pathway from Kyoto Encyclopedia of Genes and Genomes analysis (P-adjust = .007). Moreover, network analysis relevant protein-protein interaction was visualized, revealing 117 nodes and 161 edges.High miR-9 expression was associated with poor prognosis. Based on bioinformatics analysis, this study enhanced the understanding of the mechanism and related pathways of miR-9 in osteosarcoma.
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Affiliation(s)
- Fengfeng Wu
- Department of Orthopedics and Rehabilitation
| | - Xuesheng Jiang
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Zhejiang University Huzhou Hospital
| | - Qun Wang
- Department of Internal Medicine, Huzhou Wuxing Hospital of Integrated Traditional Chinese and Western Medicine
| | - Qian Lu
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Zhejiang University Huzhou Hospital
| | - Fengxiang He
- Department of Rehabilitation, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Zhejiang University Huzhou Hospital
| | - Jianyou Li
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Zhejiang University Huzhou Hospital
| | - Xiongfeng Li
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Zhejiang University Huzhou Hospital
| | - Mingchao Jin
- Department of Orthopedics, Huzhou Central Hospital, Affiliated Central Hospital Huzhou University, Zhejiang University Huzhou Hospital
| | - Juntao Xu
- Department of Orthopedics, Huzhou Traditional Chinese Medicine Hospital Affiliated to Zhejiang University of Traditional Chinese Medicine, Huzhou, Zhejiang, China
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5
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Zhen J, Zhang H, Dong H, Tong X. miR-9-3p inhibits glioma cell proliferation and apoptosis by directly targeting FOXG1. Oncol Lett 2020; 20:2007-2015. [PMID: 32724447 DOI: 10.3892/ol.2020.11725] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2019] [Accepted: 02/11/2020] [Indexed: 01/30/2023] Open
Abstract
There is accumulating evidence indicating that microRNA (miR)-9-3p expression is abnormal in patients with glioma; however, the role of miR-9-3p in glioma remains unclear. In the present study, reverse transcription-quantitative PCR and immunohistochemical assays were conducted to assess miR-9-3p and forkhead box G1 (FOXG1) expression, respectively. A luciferase reporter assay was performed to confirm the target of miR-9-3p. Moreover, cell counting kit-8 and flow cytometry assays were used to assess proliferation and apoptosis, respectively. The present study demonstrated that miR-9-3p is significantly downregulated, and FOXG1 is significantly upregulated, in patients with glioma. miR-9-3p overexpression inhibited proliferation and increased the apoptosis of both U87MG and TG-905 cells. In addition, FOXG1 was identified as a direct target of miR-9-3p, and FOXG1 silencing enhanced the inhibitory effect of miR-9-3p on proliferation and apoptosis in U87 MG and TG-905 cells. In conclusion, the present results suggest that miR-9-3p may suppress malignant biological properties by targeting FOXG1. Thus, miR-9-3p may serve as a diagnostic target and novel prognostic marker in patients with glioma.
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Affiliation(s)
- Jianwen Zhen
- Department of Cardio-cerebrovascular Diseases, The Affiliated Hospital of Xizang Minzu University, Xianyang, Shaanxi 712082, P.R. China
| | - Hengxun Zhang
- Department of Cardio-cerebrovascular Diseases, The Affiliated Hospital of Xizang Minzu University, Xianyang, Shaanxi 712082, P.R. China
| | - Hongzhi Dong
- Department of Cardio-cerebrovascular Diseases, The Affiliated Hospital of Xizang Minzu University, Xianyang, Shaanxi 712082, P.R. China
| | - Xiaopeng Tong
- Department of Cardio-cerebrovascular Diseases, The Affiliated Hospital of Xizang Minzu University, Xianyang, Shaanxi 712082, P.R. China
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Viera GM, Salomao KB, de Sousa GR, Baroni M, Delsin LEA, Pezuk JA, Brassesco MS. miRNA signatures in childhood sarcomas and their clinical implications. Clin Transl Oncol 2019; 21:1583-1623. [PMID: 30949930 DOI: 10.1007/s12094-019-02104-z] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2019] [Accepted: 03/27/2019] [Indexed: 02/06/2023]
Abstract
Progresses in multimodal treatments have significantly improved the outcomes for childhood cancer. Nonetheless, for about one-third of patients with Ewing sarcoma, rhabdomyosarcoma, or osteosarcoma steady remission has remained intangible. Thus, new biomarkers to improve early diagnosis and the development of precision-targeted medicine remain imperative. Over the last decade, remarkable progress has been made in the basic understanding of miRNAs function and in interpreting the contribution of their dysregulation to cancer development and progression. On this basis, this review focuses on what has been learned about the pivotal roles of miRNAs in the regulation of key genes implicated in childhood sarcomas.
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Affiliation(s)
- G M Viera
- Ribeirao Preto School of Medicine, University of Sao Paulo, Ribeirao Preto, Brasil
| | - K B Salomao
- Ribeirao Preto School of Medicine, University of Sao Paulo, Ribeirao Preto, Brasil
| | - G R de Sousa
- Ribeirao Preto School of Medicine, University of Sao Paulo, Ribeirao Preto, Brasil
| | - M Baroni
- Ribeirao Preto School of Medicine, University of Sao Paulo, Ribeirao Preto, Brasil
| | - L E A Delsin
- Ribeirao Preto School of Medicine, University of Sao Paulo, Ribeirao Preto, Brasil
| | - J A Pezuk
- Anhanguera University of Sao Paulo, UNIAN/SP, Sao Paulo, Brasil
| | - M S Brassesco
- Faculty of Philosophy, Sciences and Letters at Ribeirao Preto, University of Sao Paulo, Ribeirao Preto, Brasil.
- Departamento de Biologia, FFCLRP-USP, Av. Bandeirantes, 3900, Bairro Monte Alegre, Ribeirao Preto, SP, CEP 14040-901, Brazil.
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7
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Smith CM, Catchpoole D, Hutvagner G. Non-Coding RNAs in Pediatric Solid Tumors. Front Genet 2019; 10:798. [PMID: 31616462 PMCID: PMC6764412 DOI: 10.3389/fgene.2019.00798] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Accepted: 07/30/2019] [Indexed: 12/15/2022] Open
Abstract
Pediatric solid tumors are a diverse group of extracranial solid tumors representing approximately 40% of childhood cancers. Pediatric solid tumors are believed to arise as a result of disruptions in the developmental process of precursor cells which lead them to accumulate cancerous phenotypes. In contrast to many adult tumors, pediatric tumors typically feature a low number of genetic mutations in protein-coding genes which could explain the emergence of these phenotypes. It is likely that oncogenesis occurs after a failure at many different levels of regulation. Non-coding RNAs (ncRNAs) comprise a group of functional RNA molecules that lack protein coding potential but are essential in the regulation and maintenance of many epigenetic and post-translational mechanisms. Indeed, research has accumulated a large body of evidence implicating many ncRNAs in the regulation of well-established oncogenic networks. In this review we cover a range of extracranial solid tumors which represent some of the rarer and enigmatic childhood cancers known. We focus on two major classes of ncRNAs, microRNAs and long non-coding RNAs, which are likely to play a key role in the development of these cancers and emphasize their functional contributions and molecular interactions during tumor formation.
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Affiliation(s)
- Christopher M Smith
- School of Biomedical Engineering, University of Technology Sydney, Sydney, Australia
| | - Daniel Catchpoole
- School of Software, University of Technology Sydney, Sydney, Australia.,The Tumour Bank-CCRU, Kids Research, The Children's Hospital at Westmead, Sydney, Australia
| | - Gyorgy Hutvagner
- School of Biomedical Engineering, University of Technology Sydney, Sydney, Australia
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8
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Gao S, Wang J, Tian S, Luo J. miR‑9 depletion suppresses the proliferation of osteosarcoma cells by targeting p16. Int J Oncol 2019; 54:1921-1932. [PMID: 31081054 PMCID: PMC6521929 DOI: 10.3892/ijo.2019.4783] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2019] [Accepted: 10/13/2019] [Indexed: 12/21/2022] Open
Abstract
Osteosarcoma (OS) is a common primary malignancy in adolescents and children. MicroRNAs (miRNAs or miRs) can regulate the progression of OS. Herein, we explored the target genes and effects of miR-9 in OS. Cell growth, colony formation and cell cycle were respectively examined using a cell counting kit-8 (CCK-8), crystal violet staining and flow cytometry. The target gene of miR-9 was predicted according to the MicroRNA.org website. Luciferase activity was examined using a dual luciferase reporter gene assay kit. The corresponding factors levels were analyzed by carrying out reverse transcription-quantitative PCR (RT-qPCR) and western blot analysis. A mouse model of OS was also established and the volume and weight of the tumors of the mice with OS were measured. The levels of p16 in the mice with OS were detected by immunohistochemistry (IHC). The data revealed a high expression of miR-9 and a low expression of p16 in the OS tissue. p16 was found to be the target gene for miR-9 in OS. miR-9 depletion decreased the proliferation and colony formation of Saos-2 cells by arresting the cells at the G1 phase, accompanied by the downregulation of cyclin A, cyclin D1 and c-Myc expression levels. Moreover, miR-9 depletion inhibited the phosphorylation of p38, c-Jun N-terminal kinase (JNK) and extracellular signal-regulated kinase (ERK). In vivo, miR-9 depletion decreased the tumor volume and weight and increased p16 expression in the mouse tumor tissues. Nevertheless, p16 silencing reversed the suppressive effects of miR-9 inhibitors on OS cells. On the whole, the findings of this study substantiate that miR-9 depletion suppresses cell proliferation by targeting p16 in OS and by mediating the activation of the ERK/p38/JNK pathway.
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Affiliation(s)
- Song Gao
- Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, P.R. China
| | - Jianchao Wang
- Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, P.R. China
| | - Shujian Tian
- Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, P.R. China
| | - Jianping Luo
- Department of Orthopedics, Henan Provincial People's Hospital, Zhengzhou, Henan 450003, P.R. China
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Yu FQ, Wang Z, Wang XW, Wang SL, Li XD, Huang QS, Lin JH. MicroRNA-885-5p promotes osteosarcoma proliferation and migration by downregulation of cell division cycle protein 73 homolog expression. Oncol Lett 2018; 17:1565-1572. [PMID: 30675214 PMCID: PMC6341520 DOI: 10.3892/ol.2018.9802] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2017] [Accepted: 11/16/2018] [Indexed: 01/08/2023] Open
Abstract
Osteosarcoma (OS) is the most common primary malignant bone tumor. Numerous studies have strongly implicated the ectopic expression of microRNAs (miRNAs/miRs), including miR-885-5p, which is aberrantly expressed in several cancer types, in multiple cancer-related processes. However, the role of miR-885-5p in OS remains unknown. In the present study, it was found that the expression of miR-885-5p was markedly upregulated in OS cell lines and clinical tissues. Moreover, high expression of miR-885-5p was significantly associated with the development of OS. The human OS MG-63 cell line was transfected with recombinant lentivirus to regulate miR-885-5p expression. Overexpressed miR-885-5p significantly promoted the proliferation and migration of MG-63 cells in vitro, while downregulating miR-885-5p expression reversed these effects. Furthermore, bioinformatic analysis was used to predict the potential target genes of miR-885-5p, and cell division cycle protein 73 homolog (CDC73) was identified as a novel and direct target of miR-885-5p. This interaction was further confirmed using reverse transcription-quantitative polymerase chain reaction, western blotting and luciferase activity assays. These findings suggest that miR-885-5p serves a critical role in facilitating OS proliferation and migration, and can regulate CDC73 expression in OS cells and tissues. Thus, miR-885-5p could be a promising novel therapeutic biomarker for OS.
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Affiliation(s)
- Feng-Qiang Yu
- Department of Orthopedics, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Zeng Wang
- Central Laboratory, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Xin-Wen Wang
- Department of Orthopedics, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Sheng-Lin Wang
- Department of Orthopedics, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Xiao-Dong Li
- Department of Orthopedics, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Qing-Shan Huang
- Department of Orthopedics, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
| | - Jian-Hua Lin
- Department of Orthopedics, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China.,Central Laboratory, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, P.R. China
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10
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Emerging roles of non-coding RNAs in the pathogenesis, diagnosis and prognosis of osteosarcoma. Invest New Drugs 2018; 36:1116-1132. [DOI: 10.1007/s10637-018-0624-7] [Citation(s) in RCA: 45] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2018] [Accepted: 06/18/2018] [Indexed: 12/13/2022]
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11
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Lima JF, Cerqueira L, Figueiredo C, Oliveira C, Azevedo NF. Anti-miRNA oligonucleotides: A comprehensive guide for design. RNA Biol 2018; 15:338-352. [PMID: 29570036 DOI: 10.1080/15476286.2018.1445959] [Citation(s) in RCA: 159] [Impact Index Per Article: 26.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023] Open
Abstract
MicroRNAs (miRNAs) are small, non-coding RNA molecules that regulate gene expression post-transcriptionally. As a consequence of their function towards mRNA, miRNAs are widely associated with the pathogenesis of several human diseases, making miRNAs a target for new therapeutic strategies based on the control of their expression. Indeed, numerous works were published in the past decades showing the potential use of antisense oligonucleotides to target aberrant miRNAs (AMOs) involved in several human pathologies. New classes of chemical-modified-AMOs, including locked nucleic acid oligonucleotides, have recently proved their worth in silencing miRNAs. A correct design of a specific AMOs can help to improve their performance and potency towards the target miRNA by increasing for instance nuclease resistance and target affinity. This review outlines the technologies involved to suppress aberrant miRNAs. From the design strategies used in AMOs to its application in novel miRNA-based therapeutics and detection methodologies.
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Affiliation(s)
- Joana Filipa Lima
- a LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Department of Chemical Engineering , Faculty of Engineering of the University of Porto , R. Dr. Roberto Frias, Porto , Portugal.,b Biomode 2, S. A., INL - Avda. Mestre José Veiga s/n, Braga , Portugal.,c i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto , R. Alfredo Allen, Porto , Portugal.,d IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto , Rua Júlio Amaral de Carvalho, 45, Porto , Portugal
| | - Laura Cerqueira
- a LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Department of Chemical Engineering , Faculty of Engineering of the University of Porto , R. Dr. Roberto Frias, Porto , Portugal.,b Biomode 2, S. A., INL - Avda. Mestre José Veiga s/n, Braga , Portugal
| | - Ceu Figueiredo
- c i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto , R. Alfredo Allen, Porto , Portugal.,d IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto , Rua Júlio Amaral de Carvalho, 45, Porto , Portugal.,e FMUP, Faculty of Medicine of the University of Porto , Al. Prof. Hernâni Monteiro, Porto , Portugal
| | - Carla Oliveira
- c i3S, Instituto de Investigação e Inovação em Saúde, Universidade do Porto , R. Alfredo Allen, Porto , Portugal.,d IPATIMUP, Institute of Molecular Pathology and Immunology of the University of Porto , Rua Júlio Amaral de Carvalho, 45, Porto , Portugal.,e FMUP, Faculty of Medicine of the University of Porto , Al. Prof. Hernâni Monteiro, Porto , Portugal
| | - Nuno Filipe Azevedo
- a LEPABE - Laboratory for Process Engineering, Environment, Biotechnology and Energy, Department of Chemical Engineering , Faculty of Engineering of the University of Porto , R. Dr. Roberto Frias, Porto , Portugal
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12
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Xiong K, Shao LH, Zhang HQ, Jin L, Wei W, Dong Z, Zhu YQ, Wu N, Jin SZ, Xue LX. MicroRNA-9 functions as a tumor suppressor and enhances radio-sensitivity in radio-resistant A549 cells by targeting neuropilin 1. Oncol Lett 2018; 15:2863-2870. [PMID: 29435012 PMCID: PMC5778782 DOI: 10.3892/ol.2017.7705] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2017] [Accepted: 11/10/2017] [Indexed: 01/06/2023] Open
Abstract
Radiotherapy is commonly used to treat lung cancer but may not kill all cancer cells, which may be attributed to the radiotherapy resistance that often occurs in non-small cell lung cancer (NSCLC). At present, the molecular mechanism of radio-resistance remains unclear. Neuropilin 1 (NRP1), a co-receptor for vascular endothelial growth factor (VEGF), was demonstrated to be associated with radio-resistance of NSCLC cells via the VEGF-phosphoinositide 3-kinase-nuclear factor-κB pathway in our previous study. It was hypothesized that certain microRNAs (miRs) may serve crucial functions in radio-sensitivity by regulating NRP1. Bioinformatics predicted that NRP1 was a potential target of miR-9, and this was validated by luciferase reporter assays. Functionally, miR-9-transfected A549 cells exhibited a decreased proliferation rate, increased apoptosis rate and attenuated migratory and invasive abilities. Additionally, a high expression of miR-9 also significantly enhanced the radio-sensitivity of A549 cells in vitro and in vivo. These data improve understanding of the mechanisms of cell radio-resistance, and suggest that miR-9 may be a molecular target for the prediction of radio-sensitivity in NSCLC.
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Affiliation(s)
- Kai Xiong
- Department of Radiation Oncology, Medical Research Center, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Li Hong Shao
- Key Laboratory of Radiobiology, Ministry of Health, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Hai Qin Zhang
- Key Laboratory of Radiobiology, Ministry of Health, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Linlin Jin
- Key Laboratory of Radiobiology, Ministry of Health, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Wei Wei
- Key Laboratory of Radiobiology, Ministry of Health, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Zhuo Dong
- Key Laboratory of Radiobiology, Ministry of Health, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Yue Quan Zhu
- Department of Radiation Oncology, Medical Research Center, Peking University Third Hospital, Beijing 100191, P.R. China
| | - Ning Wu
- Department of Radiation Oncology, China-Japan Union Hospital of Jilin University, Changchun, Jilin 130033, P.R. China
| | - Shun Zi Jin
- Key Laboratory of Radiobiology, Ministry of Health, Jilin University, Changchun, Jilin 130021, P.R. China
| | - Li Xiang Xue
- Department of Radiation Oncology, Medical Research Center, Peking University Third Hospital, Beijing 100191, P.R. China
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13
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Cheng D, Qiu X, Zhuang M, Zhu C, Zou H, Liu Z. MicroRNAs with prognostic significance in osteosarcoma: a systemic review and meta-analysis. Oncotarget 2017; 8:81062-81074. [PMID: 29113367 PMCID: PMC5655262 DOI: 10.18632/oncotarget.19009] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 06/19/2017] [Indexed: 12/19/2022] Open
Abstract
Introduction This study aimed to elucidate the prognostic value of microRNAs (miRNAs) in patients with osteosarcoma. Materials and Methods Studies were recruited by searching PubMed, Embase, the Cochrane Library, China National Knowledge Infrastructure, and Wanfang data-bases (final search update conducted January 2017). Eligible studies were identified and the quality was assessed using multiple search strategies. Results A total of 55 articles that investigated the correlation between miRNA expression and either patient survival or disease recurrence in osteosarcoma was initially identified. Among these, 30 studies were included in the meta-analysis. The results of our meta-analysis revealed that elevated levels of miR-21, miR-214, miR-29, miR-9 and miR-148a were associated with poor prognosis in osteosarcoma. Additionally, downregulated miR-382, miR26a, miR-126, miR-195 and miR-124 expression indicated poor prognosis in osteosarcoma. Conclusions miRNAs may act as independent prognostic factors in patients with osteosarcoma and are useful in stratifying risk.
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Affiliation(s)
- Dong Cheng
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou 213003, P.R. China
| | - Xubin Qiu
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou 213003, P.R. China
| | - Ming Zhuang
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou 213003, P.R. China
| | - Chenlei Zhu
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou 213003, P.R. China
| | - Hongjun Zou
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou 213003, P.R. China
| | - Zhiwei Liu
- Department of Orthopedics, The Third Affiliated Hospital of Soochow University, Changzhou 213003, P.R. China
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14
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Xu JF, Wang YP, Zhang SJ, Chen Y, Gu HF, Dou XF, Xia B, Bi Q, Fan SW. Exosomes containing differential expression of microRNA and mRNA in osteosarcoma that can predict response to chemotherapy. Oncotarget 2017; 8:75968-75978. [PMID: 29100284 PMCID: PMC5652678 DOI: 10.18632/oncotarget.18373] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2017] [Accepted: 04/15/2017] [Indexed: 01/08/2023] Open
Abstract
A major challenge in osteosarcoma (OS) is the selection of the most effective chemotherapeutic agents for individual patients, while the administration of ineffective chemotherapy increases mortality and decreases quality of life in patients. This emphasizes the need to evaluate every patient's probability of responding to each chemotherapeutic agent. We developed a profiling strategy for serum exosomal microRNAs and mRNAs in OS patients with differential chemotherapeutic responses. Twelve miRNAs were up regulated and 18 miRNAs were under regulated significantly in OS patient with poor chemotherapeutic response when compared with those in good chemotherapeutic response (p<0.05). In addition, miR-124, miR133a, miR-199a-3p, and miR-385 were validated and significantly reduced in poorly responded patients with an independent OS cohort. While miR-135b, miR-148a, miR-27a, and miR-9 were significantly over expressed in serum exosomes. Bioinformatic analysis by DIANA-mirPath demonstrated that Proteoglycans in cancer, Hippo signaling pathway, Pathways in cancer, Transcriptional misregulation in cancer, PI3K-Akt signaling pathway, Ras signaling pathway, Ubiquitin mediated proteolysis, Choline metabolism in cancer were the most prominent pathways enriched in quantiles with the miRNA patterns related to poor chemotherapeutic response. Messenger RNAs(mRNAs) includingAnnexin2, Smad2, Methylthioadenosine phosphorylase (MTAP), Cdc42-interacting protein 4 (CIP4), Pigment Epithelium-Derived Factor (PEDF), WW domain-containing oxidoreductase (WWOX), Cell division cycle 5-like (Cdc5L), P27 were differentially expressed in exosomes in OS patients with different chemotherapeutic response. These data demonstrated that exosomal RNA molecules are reliable biomarkers in classifying osteosarcoma with different chemotherapy sensitivity.
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Affiliation(s)
- Ji-Feng Xu
- Department of Orthopedics, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China.,Department of Orthopedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
| | - Ya-Ping Wang
- Department of Cardiology, 2nd Affiliated Hospital, School of Medicine, Zhejiang University, Zhejiang 310009, P.R. China
| | - Shui-Jun Zhang
- Department of Orthopedics, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Yu Chen
- Department of Orthopedics, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Hai-Feng Gu
- Department of Orthopedics, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Xiao-Fan Dou
- Department of Orthopedics, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Bing Xia
- Department of Orthopedics, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Qing Bi
- Department of Orthopedics, Zhejiang Provincial People's Hospital, Hangzhou Medical College, Hangzhou, Zhejiang 310014, P.R. China
| | - Shun-Wu Fan
- Department of Orthopedics, Sir Run Run Shaw Hospital, School of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
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15
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Zhang Y, Zhou J, Sun M, Sun G, Cao Y, Zhang H, Tian R, Zhou L, Duan L, Chen X, Lun L. Prognostic Value of microRNA-9 in Various Cancers: a Meta-analysis. Pathol Oncol Res 2016; 23:573-582. [PMID: 27844330 PMCID: PMC5487937 DOI: 10.1007/s12253-016-0148-4] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/06/2016] [Accepted: 11/09/2016] [Indexed: 10/28/2022]
Abstract
Recently, there are more and more evidences from studies have revealed the association between microRNA-9 (miR-9) expression and outcome in multiple cancers, but inconsistent results have also been reported. It is necessary to rationalize a meta analysis of all available data to clarify the prognostic role of miR-9. Eligible studies were selected through multiple search strategies and the quality was assessed by MOOSE. Data was extracted from studies according to the key statistics index. All analyses were performed using STATA software. Twenty studies were selected in the meta-analysis to evaluate the prognostic role of miR-9 in multiple tumors. MiR-9 expression level was an independent prognostic biomarker for OS in tumor patients using multivariate and univariate analyses. High expression levels of miR-9 was demonstrated to associated with poor overall survival (OS) (HR = 2.23, 95 % CI: 1.56-3.17, P < 0.05) and recurrence free survival/progress free survival (RFS/PFS) (HR = 2.08, 95 % CI: 1.33-3.27, P < 0.05). Subgroup analysis showed that residence region (China and Japan), sample size, cancer type (solid or leukemia), follow-up months and analysis method (qPCR) did not alter the predictive value of miR-9 on OS in various cancers. Furthermore, no significant associations were detected for miR-9 expression and lymph node metastasis or distant metastasis. The present results suggest that promoted miR-9 expression is associated with poor OS in patients with general cancers.
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Affiliation(s)
- Yunyuan Zhang
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, 266003, People's Republic of China
| | - Jun Zhou
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, 266003, People's Republic of China
| | - Meiling Sun
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, 266003, People's Republic of China
| | - Guirong Sun
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, 266003, People's Republic of China
| | - Yongxian Cao
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, 266003, People's Republic of China
| | - Haiping Zhang
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, 266003, People's Republic of China
| | - Runhua Tian
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, 266003, People's Republic of China
| | - Lan Zhou
- College of Laboratory Medicine, Key Laboratory of Laboratory Medical Diagnostics Designated by Chinese Ministry of Education, Chongqing Medical University, Chongqing, 400016, People's Republic of China
| | - Liang Duan
- Department of Laboratory Medicine, the Second Hospital Affiliated to Chongqing Medical University, Chongqing, 400010, People's Republic of China
| | - Xian Chen
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, 266003, People's Republic of China.
| | - Limin Lun
- Department of Clinical Laboratory, The Affiliated Hospital of Qingdao University, Qingdao, 266003, People's Republic of China.
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16
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Fenger JM, Roberts RD, Iwenofu OH, Bear MD, Zhang X, Couto JI, Modiano JF, Kisseberth WC, London CA. MiR-9 is overexpressed in spontaneous canine osteosarcoma and promotes a metastatic phenotype including invasion and migration in osteoblasts and osteosarcoma cell lines. BMC Cancer 2016; 16:784. [PMID: 27724924 PMCID: PMC5057229 DOI: 10.1186/s12885-016-2837-5] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2016] [Accepted: 10/05/2016] [Indexed: 01/07/2023] Open
Abstract
Background MicroRNAs (miRNAs) regulate the expression of networks of genes and their dysregulation is well documented in human malignancies; however, limited information exists regarding the impact of miRNAs on the development and progression of osteosarcoma (OS). Canine OS exhibits clinical and molecular features that closely resemble the corresponding human disease and it is considered a well-established spontaneous animal model to study OS biology. The purpose of this study was to investigate miRNA dysregulation in canine OS. Methods We evaluated miRNA expression in primary canine OS tumors and normal canine osteoblast cells using the nanoString nCounter system. Quantitative PCR was used to validate the nanoString findings and to assess miR-9 expression in canine OS tumors, OS cell lines, and normal osteoblasts. Canine osteoblasts and OS cell lines were stably transduced with pre-miR-9 or anti-miR-9 lentiviral constructs to determine the consequences of miR-9 on cell proliferation, apoptosis, invasion and migration. Proteomic and gene expression profiling of normal canine osteoblasts with enforced miR-9 expression was performed using 2D-DIGE/tandem mass spectrometry and RNA sequencing and changes in protein and mRNA expression were validated with Western blotting and quantitative PCR. OS cell lines were transduced with gelsolin (GSN) shRNAs to investigate the impact of GSN knockdown on OS cell invasion. Results We identified a unique miRNA signature associated with primary canine OS and identified miR-9 as being significantly overexpressed in canine OS tumors and cell lines compared to normal osteoblasts. Additionally, high miR-9 expression was demonstrated in tumor-specific tissue obtained from primary OS tumors. In normal osteoblasts and OS cell lines transduced with miR-9 lentivirus, enhanced invasion and migration were observed, but miR-9 did not affect cell proliferation or apoptosis. Proteomic and transcriptional profiling of normal canine osteoblasts overexpressing miR-9 identified alterations in numerous genes, including upregulation of GSN, an actin filament-severing protein involved in cytoskeletal remodeling. Lastly, stable downregulation of miR-9 in OS cell lines reduced GSN expression with a concomitant decrease in cell invasion and migration; concordantly, cells transduced with GSN shRNA demonstrated decreased invasive properties. Conclusions Our findings demonstrate that miR-9 promotes a metastatic phenotype in normal canine osteoblasts and malignant OS cell lines, and that this is mediated in part by enhanced GSN expression. As such, miR-9 represents a novel target for therapeutic intervention in OS. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-2837-5) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Joelle M Fenger
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, 601 Vernon L. Tharp Street, Columbus, OH, USA. .,, 444 Veterinary Medical Academic Building, 1600 Coffey Road, Columbus, OH, 43210, USA.
| | - Ryan D Roberts
- Center for Childhood Cancer, Nationwide Children's Hospital, 700 Children's Drive, Columbus, OH, USA
| | - O Hans Iwenofu
- Department of Pathology, College of Medicine, The Ohio State University, 129 Hamilton Hall, 1645 Neil Avenue, Columbus, OH, USA
| | - Misty D Bear
- Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, OH, USA
| | - Xiaoli Zhang
- Center for Biostatistics, The Ohio State University, 320B Lincoln Tower, 1800 Cannon Drive, Columbus, OH, USA
| | - Jason I Couto
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, 601 Vernon L. Tharp Street, Columbus, OH, USA
| | - Jaime F Modiano
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, University of Minnesota, Saint Paul, MN, USA.,Masonic Cancer Center, University of Minnesota, 420 Delaware Street, SE, MMC 806, Minneapolis, MN, USA
| | - William C Kisseberth
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, 601 Vernon L. Tharp Street, Columbus, OH, USA
| | - Cheryl A London
- Department of Veterinary Clinical Sciences, College of Veterinary Medicine, The Ohio State University, 601 Vernon L. Tharp Street, Columbus, OH, USA.,Department of Veterinary Biosciences, College of Veterinary Medicine, The Ohio State University, 1900 Coffey Road, Columbus, OH, USA
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17
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MiR-138 Acts as a Tumor Suppressor by Targeting EZH2 and Enhances Cisplatin-Induced Apoptosis in Osteosarcoma Cells. PLoS One 2016; 11:e0150026. [PMID: 27019355 PMCID: PMC4809565 DOI: 10.1371/journal.pone.0150026] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2015] [Accepted: 02/08/2016] [Indexed: 12/25/2022] Open
Abstract
Chemotherapeutic insensitivity remains a major obstacle to treating osteosarcoma effectively. Recently, increasing evidence has suggested that microRNAs (miRNAs) are involved in drug resistance. However, the effect of miR-138 on cisplatin chemoresistance in osteosarcoma has not been reported. We used real-time PCR to detect the expression of mature miR-138 in osteosarcoma tissues and cell lines. Cell proliferation, invasion, and migration assays were used to observe changes to the osteosarcoma malignant phenotype. MiR-138 was downregulated in osteosarcoma tissues and cell lines, and miR-138 overexpression negatively regulated osteosarcoma cell proliferation, migration, and invasion. We also verified that EZH2 is a direct target of miR-138. Furthermore, enhancing EZH2 expression reduced the inhibitory effects of miR-138 on osteosarcoma. Proliferation, apoptosis assays and caspase-3 activity assay confirmed that elevated miR-138 expression enhanced osteosarcoma cell chemosensitivity to cisplatin by targeting EZH2. In conclusion, the present study demonstrates that miR-138 acts as a tumor suppressor by enhancing osteosarcoma cell chemosensitivity and supports its potential application for treating osteosarcoma in the future.
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