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Wang J, Yang Z, He X, Wang Y, Luo D, Xu W, Zhang H, Zhou X. DNM3OS/miR-127-5p/CDH11, activates Wnt3a/β-catenin/LEF-1 pathway to form a positive feedback and aggravate spine facet joint osteoarthritis. Noncoding RNA Res 2024; 9:294-306. [PMID: 38505310 PMCID: PMC10945139 DOI: 10.1016/j.ncrna.2024.01.008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/03/2024] [Accepted: 01/11/2024] [Indexed: 03/21/2024] Open
Abstract
Spinal facet joint osteoarthritis (FJOA) is an OA disease with pathogenesis and progression uncovered. Our present study was performed to elucidate the role of DNM3OS on spinal FJOA. In this study, spine facet joint tissue of patients were collected. In vitro and in vivo models were constructed with SW1353 cells and rats. Hematoxylin and eosin (HE) staining, Safranin O-fast Green, Alcian blue staining, and Tolueine blue O (TBO) staining were employed for histology analyses. Quantitative PCR, western blotting, and Immunofluorescence were performed to evaluate the expression of genes. The levels of inflammatory cytokines were measured by enzyme-linked immunosorbent assay analysis. Cell Counting Kit-8 and flow cytometry were used for cell activity and apoptosis evaluation. The targeting sites between microRNA (miR)-127-5p and cadherin 11 (CDH11) were predicted TargetScan and miRbase database and confirmed by Dual-luciferase reporter assays. CHIP and EMS assay were employed to confirm the binding of LEF1and DNM3OS promoter. Our results showed that DNM3OS was found to upregulated, while miR-127-5p was downregulated in severe FJOA patients and inflammation-induced chondrosarcoma SW1353 cells. DNM3OS reduced cell activity, induced cell apoptosis and extracellular matrix (ECM) degradation by sponging miR-127-5p in vitro. miR-127-5p targeted CDH11 and inhibited wnt3a/β-catenin pathway to regulate OA in vitro. LEF1 promoted DNM3OS transcription to form a positively feedback in activated wnt3a/β-catenin pathway. In vivo rat model also confirmed that DNM3OS aggravated FJOA. In summary, DNM3OS/miR-127-5p/CDH11 enhanced Wnt3a/β-Catenin/LEF-1 pathway to form a positive feedback and aggravate spinal FJOA.
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Affiliation(s)
- Jing Wang
- Department of Orthopaedics, Zhongshan Torch Development Zone People's Hospital, Zhongshan, 528436, China
| | - Zhenyu Yang
- Southern Medical University, Guangzhou, 510220, China
| | - Xiuming He
- Department of Orthopaedics, Zhongshan Torch Development Zone People's Hospital, Zhongshan, 528436, China
| | - Yeyang Wang
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Guangzhou, 510220, China
| | - Dixin Luo
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Guangzhou, 510220, China
| | - Wangyang Xu
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Guangzhou, 510220, China
| | - Hongtao Zhang
- Department of Orthopaedics, Zhongshan Torch Development Zone People's Hospital, Zhongshan, 528436, China
| | - Xiaozhong Zhou
- Southern Medical University, Guangzhou, 510220, China
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, Guangzhou, 510220, China
- Department of Orthopedics, Hui Lai County People's Hospital of Guangdong Second Provincial General Hospital, Hui Lai, 515299, China
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Kaur G, Pippin JA, Chang S, Redmond J, Chesi A, Wells AD, Maerz T, Grant SFA, Coleman RM, Hankenson KD, Wagley Y. Osteoporosis GWAS-implicated DNM3 locus contextually regulates osteoblastic and chondrogenic fate of mesenchymal stem/progenitor cells through oscillating miR-199a-5p levels. JBMR Plus 2024; 8:ziae051. [PMID: 38686038 PMCID: PMC11056323 DOI: 10.1093/jbmrpl/ziae051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 02/15/2024] [Accepted: 04/11/2024] [Indexed: 05/02/2024] Open
Abstract
Genome wide association study (GWAS)-implicated bone mineral density (BMD) signals have been shown to localize in cis-regulatory regions of distal effector genes using 3D genomic methods. Detailed characterization of such genes can reveal novel causal genes for BMD determination. Here, we elected to characterize the "DNM3" locus on chr1q24, where the long non-coding RNA DNM3OS and the embedded microRNA MIR199A2 (miR-199a-5p) are implicated as effector genes contacted by the region harboring variation in linkage disequilibrium with BMD-associated sentinel single nucleotide polymorphism, rs12041600. During osteoblast differentiation of human mesenchymal stem/progenitor cells (hMSC), miR-199a-5p expression was temporally decreased and correlated with the induction of osteoblastic transcription factors RUNX2 and Osterix. Functional relevance of miR-199a-5p downregulation in osteoblastogenesis was investigated by introducing miR-199a-5p mimic into hMSC. Cells overexpressing miR-199a-5p depicted a cobblestone-like morphological change and failed to produce BMP2-dependent extracellular matrix mineralization. Mechanistically, a miR-199a-5p mimic modified hMSC propagated normal SMAD1/5/9 signaling and expressed osteoblastic transcription factors RUNX2 and Osterix but depicted pronounced upregulation of SOX9 and enhanced expression of essential chondrogenic genes ACAN, COMP, and COL10A1. Mineralization defects, morphological changes, and enhanced chondrogenic gene expression associated with miR-199a-5p mimic over-expression were restored with miR-199a-5p inhibitor suggesting specificity of miR-199a-5p in chondrogenic fate specification. The expression of both the DNM3OS and miR-199a-5p temporally increased and correlated with hMSC chondrogenic differentiation. Although miR-199a-5p overexpression failed to further enhance chondrogenesis, blocking miR-199a-5p activity significantly reduced chondrogenic pellet size, extracellular matrix deposition, and chondrogenic gene expression. Taken together, our results indicate that oscillating miR-199a-5p levels dictate hMSC osteoblast or chondrocyte terminal fate. Our study highlights a functional role of miR-199a-5p as a BMD effector gene at the DNM3 BMD GWAS locus, where patients with cis-regulatory genetic variation which increases miR-199a-5p expression could lead to reduced osteoblast activity.
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Affiliation(s)
- Gurcharan Kaur
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - James A Pippin
- Center for Spatial and Functional Genomics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, United States
| | - Solomon Chang
- Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Justin Redmond
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI 48109, United States
- Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Alessandra Chesi
- Center for Spatial and Functional Genomics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, United States
- Division of Human Genetics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, United States
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Andrew D Wells
- Center for Spatial and Functional Genomics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, United States
- Department of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Tristan Maerz
- Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Struan F A Grant
- Center for Spatial and Functional Genomics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, United States
- Division of Human Genetics, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, United States
- Division of Diabetes and Endocrinology, The Children’s Hospital of Philadelphia, Philadelphia, PA 19104, United States
- Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States
- Institute of Diabetes, Obesity and Metabolism, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States
- Department of Genetics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, United States
| | - Rhima M Coleman
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI 48109, United States
- Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Kurt D Hankenson
- Department of Biomedical Engineering, University of Michigan Medical School, Ann Arbor, MI 48109, United States
- Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
| | - Yadav Wagley
- Department of Orthopaedic Surgery, University of Michigan Medical School, Ann Arbor, MI 48109, United States
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Dong X, Cong S. DNM3OS regulates GAPDH expression and influences the molecular pathogenesis of Huntington's disease. J Cell Mol Med 2021; 25:9066-9071. [PMID: 34369082 PMCID: PMC8435450 DOI: 10.1111/jcmm.16838] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 07/19/2021] [Accepted: 07/22/2021] [Indexed: 12/23/2022] Open
Abstract
Emerging studies have suggested that dysregulated long non‐coding RNAs (lncRNAs) are associated with the pathogenesis of neurodegenerative diseases (NDD) including Huntington's disease (HD); however, the pathophysiological mechanism by which lncRNA dysregulation participates in HD remains to be elucidated. Here, we aim to analyse the expression of lncRNA‐DNM3OS and identify the possible DNM3OS/miR‐196b‐5p/GAPDH pathway. PC12 cells induced by rat pheochromocytoma expressing HD gene exon 1 fragment with either 23 or 74 polyglutamine repeats fused to the green fluorescent protein (GFP) were cultured. Our results show that GAPDH and DNM3OS were upregulated in HD PC12 cells, downregulation of which lead to inhibition of aggregate formation accompanied by a decreased apoptosis rate and increased relative ROS levels and cell viability. Moreover, upregulated DNM3OS decreased the expression of miR‐196b‐5p by sponging, and GAPDH was a direct target of miR‐196b‐5p, playing an important pathogenic role in the formation of aggregates in the HD cell model. Our study uncovers a novel DNM3OS/miR‐196b‐5p/GAPDH pathway involved in the molecular pathogenesis of HD, which may offer a potential therapeutic strategy for HD.
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Affiliation(s)
- Xiaoyu Dong
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, China
| | - Shuyan Cong
- Department of Neurology, Shengjing Hospital of China Medical University, Shenyang, China
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Abstract
PURPOSE Long non-coding RNAs (lncRNAs) are essential regulators in the development of ovarian cancer (OC). Nonetheless, the function of lncRNA DNM3 opposite strand/antisense RNA (DNM3OS) in OC remains unclear. This work aimed to investigate the biological roles and underlying mechanisms of DNM3OS in OC. MATERIALS AND METHODS Quantitative real-time polymerase chain reaction was conducted to examine DNM3OS, microRNA (miR)-193a-3p, and mitogen-activated protein kinase 3 (MAP3K3) mRNA expression in OC tissues and cell lines. Kaplan-Meier survival analysis was employed to analyze the relationship between DNM3OS expression and the prognosis of OC patients. Cell counting kit-8, 5-ethynyl-2'-deoxyuridine, and transwell experiments were conducted to monitor cell proliferation, migration, and invasion, respectively. Western blot was applied to examine epithelial-mesenchymal transition associated protein (E-cadherin and N-cadherin) expression. Luciferase reporter gene and RNA immunoprecipitation experiments were performed to confirm the relationships among DNM3OS, miR-193a-3p, and MAP3K3. Pearson's correlation analysis was adopted to analyze the correlations among DNM3OS, miR-193a-3p, and MAP3K3 mRNA. RESULTS DNM3OS expression was remarkably increased in OC tissues and cell lines, which was associated with the unfavorable prognosis of the patients. DNM3OS overexpression enhanced OC cell proliferation, migration, and invasion; suppressed E-cadherin protein expression; and facilitated N-cadherin protein expression, while the transfection of miR-193a-3p mimics had the opposite effects. DNM3OS directly interacted with miR-193a-3p, and miR-193a-3p targeted MAP3K3 by directly binding to 3'UTR. DNM3OS could up-regulate the expression of MAP3K3 via repressing miR-193a-3p expression. CONCLUSION DNM3OS, as an oncogenic lncRNA, increases the malignancy of OC cells via regulation of an miR-193a-3p/MAP3K3 axis.
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Affiliation(s)
- Lei He
- Department of Gynecology and Obstetrics, Key Laboratory of Obstetrics and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second Hospital, Sichuan University, Chengdu, China
| | - Guolin He
- Department of Gynecology and Obstetrics, Key Laboratory of Obstetrics and Gynecologic and Pediatric Diseases and Birth Defects of Ministry of Education, West China Second Hospital, Sichuan University, Chengdu, China.
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Zhou X, Xu W, Wang Y, Zhang H, Zhang L, Li C, Yao S, Huang Z, Huang L, Luo D. LncRNA DNM3OS regulates GREM2 via miR-127-5p to suppress early chondrogenic differentiation of rat mesenchymal stem cells under hypoxic conditions. Cell Mol Biol Lett 2021; 26:22. [PMID: 34049478 PMCID: PMC8161583 DOI: 10.1186/s11658-021-00269-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Accepted: 05/20/2021] [Indexed: 12/13/2022] Open
Abstract
Background Improved chondrogenic differentiation of mesenchymal stem cells (MSCs) by genetic regulation is a potential method for regenerating articular cartilage. MiR-127-5p has been reported to promote cartilage differentiation of rat bone marrow MSCs (rMSCs); however, the regulatory mechanisms underlying hypoxia-stimulated chondrogenic differentiation remain unknown. Methods rMSCs were induced to undergo chondrogenic differentiation under normoxic or hypoxic conditions. Expression of lncRNA DNM3OS, miR-127-5p, and GREM2 was detected by quantitative real-time PCR. Proteoglycans were detected by Alcian blue staining. Western blot assays were performed to examine the relative levels of GREM2 and chondrogenic differentiation related proteins. Luciferase reporter assays were performed to assess the association among DNM3OS, miR-127-5p, and GREM2. Results MiR-127-5p levels were upregulated, while DNM3OS and GREM2 levels were downregulated in rMSCs induced to undergo chondrogenic differentiation, and those changes were attenuated by hypoxic conditions (1% O2). Further in vitro experiments revealed that downregulation of miR-127-5p reduced the production of proteoglycans and expression of chondrogenic differentiation markers (COL1A1, COL2A1, SOX9, and ACAN) and osteo/chondrogenic markers (BMP-2, p-SMAD1/2). MiR-127-5p overexpression produced the opposite results in rMSCs induced to undergo chondrogenic differentiation under hypoxic conditions. GREM2 was found to be a direct target of miR-127-5p, which was suppressed in rMSCs undergoing chondrogenic differentiation. Moreover, DNM3OS could directly bind to miR-127-5p and inhibit chondrogenic differentiation of rMSCs via regulating GREM2. Conclusions Our study revealed a novel molecular pathway (DNM3OS/miR-127-5p/GREM2) that may be involved in hypoxic chondrogenic differentiation.
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Affiliation(s)
- Xiaozhong Zhou
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Haizhu District, Guangzhou, 510317, Guangdong, People's Republic of China.,The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
| | - Wangyang Xu
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Haizhu District, Guangzhou, 510317, Guangdong, People's Republic of China
| | - Yeyang Wang
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Haizhu District, Guangzhou, 510317, Guangdong, People's Republic of China
| | - Hui Zhang
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Haizhu District, Guangzhou, 510317, Guangdong, People's Republic of China
| | - Li Zhang
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Haizhu District, Guangzhou, 510317, Guangdong, People's Republic of China
| | - Chao Li
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Haizhu District, Guangzhou, 510317, Guangdong, People's Republic of China
| | - Shun Yao
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Haizhu District, Guangzhou, 510317, Guangdong, People's Republic of China
| | - Zixiang Huang
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Haizhu District, Guangzhou, 510317, Guangdong, People's Republic of China
| | - Lishan Huang
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Haizhu District, Guangzhou, 510317, Guangdong, People's Republic of China
| | - Dixin Luo
- The Spine Department, Orthopaedic Center, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Haizhu District, Guangzhou, 510317, Guangdong, People's Republic of China.
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Yu TT, Xu QF, Li SY, Huang HJ, Dugan S, Shao L, Roggenbuck JA, Liu XT, Liu HZ, Hirsch BA, Yue S, Liu C, Cheng SY. Deletion at an 1q24 locus reveals a critical role of long noncoding RNA DNM3OS in skeletal development. Cell Biosci 2021; 11:47. [PMID: 33653390 PMCID: PMC7923828 DOI: 10.1186/s13578-021-00559-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 02/17/2021] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Skeletal development and maintenance are complex processes known to be coordinated by multiple genetic and epigenetic signaling pathways. However, the role of long non-coding RNAs (lncRNAs), a class of crucial epigenetic regulatory molecules, has been under explored in skeletal biology. RESULTS Here we report a young patient with short stature, hypothalamic dysfunction and mild macrocephaly, who carries a maternally inherited 690 kb deletion at Chr.1q24.2 encompassing a noncoding RNA gene, DNM3OS, embedded on the opposite strand in an intron of the DYNAMIN 3 (DNM3) gene. We show that lncRNA DNM3OS sustains the proliferation of chondrocytes independent of two co-cistronic microRNAs miR-199a and miR-214. We further show that nerve growth factor (NGF), a known factor of chondrocyte growth, is a key target of DNM3OS-mediated control of chondrocyte proliferation. CONCLUSIONS This work demonstrates that DNM3OS is essential for preventing premature differentiation of chondrocytes required for bone growth through endochondral ossification.
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Affiliation(s)
- Ting-Ting Yu
- Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Jiangsu, 211166, Nanjing, P. R. China
| | - Qiu-Fan Xu
- Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Jiangsu, 211166, Nanjing, P. R. China
| | - Si-Yang Li
- Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Jiangsu, 211166, Nanjing, P. R. China
| | - Hui-Jie Huang
- Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Jiangsu, 211166, Nanjing, P. R. China
| | - Sarah Dugan
- Department of Medical Genetics, Children's Hospital and Clinics of Minnesota, Minneapolis, MI, 55404, USA
| | - Lei Shao
- Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Jiangsu, 211166, Nanjing, P. R. China
| | - Jennifer A Roggenbuck
- Department of Neurology, Ohio State University Medical Center, Columbus, OH, 43210, USA
| | - Xiao-Tong Liu
- Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Jiangsu, 211166, Nanjing, P. R. China
| | - Huai-Ze Liu
- Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Jiangsu, 211166, Nanjing, P. R. China
| | - Betsy A Hirsch
- University of Minnesota Medical Center-Fairview, Minneapolis, MI, 55404, USA
| | - Shen Yue
- Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Jiangsu, 211166, Nanjing, P. R. China.
| | - Chen Liu
- Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Jiangsu, 211166, Nanjing, P. R. China.
| | - Steven Y Cheng
- Department of Medical Genetics, School of Basic Medical Sciences, Nanjing Medical University, Jiangsu, 211166, Nanjing, P. R. China.
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Wang W, Wang Q, Huang DB, Sun QK, Wu SS, Zhao YJ, Jia W, Hu DS, He YF. Tumor-associated mesenchymal stem cells promote hepatocellular carcinoma metastasis via a DNM3OS/KDM6B/TIAM1 axis. Cancer Lett 2021; 503:19-31. [PMID: 33472090 DOI: 10.1016/j.canlet.2021.01.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2020] [Revised: 12/12/2020] [Accepted: 01/13/2021] [Indexed: 02/06/2023]
Abstract
Tumor-associated mesenchymal stem cells (MSCs) play a critical role in the growth and metastasis of hepatocellular carcinoma (HCC). However, the mechanism underlying the crosstalk between MSCs and HCC cells is not completely understood. Here, HCC cells were treated with or without conditioned medium of MSCs (CM-MSC), and examined for differential expression of long non-coding RNAs (lncRNAs). Knockdown and overexpression experiments were conducted to explore the function of the lncRNA DNM3OS in MSC-induced HCC growth and metastasis. CM-MSC treatment led to a concentration-dependent induction of DNM3OS in HCC cells. DNM3OS was significantly upregulated in HCC compared to adjacent liver tissues. High DNM3OS expression was associated with TNM stage, vascular invasion, and poor prognosis of HCC patients. Silencing of DNM3OS inhibited HCC cell proliferation and invasion in vitro and tumorigenesis and metastasis in vivo. Overexpression of DNM3OS enhanced HCC cell proliferation, invasion, and metastasis. Biochemically, DNM3OS was mainly localized in the nucleus and physically interacted with KDM6B. The association of DNM3OS with KDM6B induced the expression of TIAM1 through reduction of H3K27me3 at the TIAM1 promoter. TIAM1 overexpression restored the proliferation and invasion of DNM3OS-depleted HCC cells. Our data delineate a mechanism by which MSCs accelerate HCC growth and metastasis through a DNM3OS/KDM6B/TIAM1 axis.
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Wang H, Ji X. SMAD6, positively regulated by the DNM3OS-miR-134-5p axis, confers promoting effects to cell proliferation, migration and EMT process in retinoblastoma. Cancer Cell Int 2020; 20:23. [PMID: 31992960 PMCID: PMC6977187 DOI: 10.1186/s12935-020-1103-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2019] [Accepted: 01/10/2020] [Indexed: 12/12/2022] Open
Abstract
Background Retinoblastoma (RB) is acknowledged to be the commonest intraocular malignancy in infants and children and the outcome of RB patients is unfavorable due to limited early diagnosis and effective therapy. SMAD family member 6 (SMAD6) has been reported in the initiation and progression of human cancers by acting as a biological participant. However, the role of SMAD6 in RB has not been illustrated yet. Methods The expression of SMAD6 mRNA, miR-134-5p and DNM3OS was measured by RT-qPCR. SMAD6 protein levels were measured by western blot. The effects of SMAD6 depletion on RB cells were analyzed using CCK-8 and transwell assays. The key proteins related to epithelial-mesenchymal transition (EMT) was determined by western blot. The localization of DNM3OS was detected by nuclear/cytoplasmic assay. In addition, the direct interaction between miR-134-5p and SMAD6 or DNM3OS was confirmed with the application of dual-luciferase reporter assay. Results SMAD6 was upregulated in RB tissue samples and cell lines, and silencing SMAD6 suppressed cell proliferation, migration and EMT in RB. Mechanically, SMAD6 was positively regulated by lncRNA DNM3OS through competitively interacting with miR-134-5p. DNM3OS contributed to RB progression by SMAD6-mediated manner. Conclusions This research unmasked a novel DNM3OS/miR-134-5p/SMAD6 pathway in RB, which might make contribution to treatment of RB.![]()
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Affiliation(s)
- Hui Wang
- Ophthalmology, The People's Hospital of Jiaozuo City, 267 Jiefang Middle Road, Jiaozuo City, 454150 Henan Province China
| | - Xiang Ji
- Ophthalmology, The People's Hospital of Jiaozuo City, 267 Jiefang Middle Road, Jiaozuo City, 454150 Henan Province China
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Wang S, Ni B, Zhang Z, Wang C, Wo L, Zhou C, Zhao Q, Zhao E. Long non-coding RNA DNM3OS promotes tumor progression and EMT in gastric cancer by associating with Snail. Biochem Biophys Res Commun 2019; 511:57-62. [PMID: 30770102 DOI: 10.1016/j.bbrc.2019.02.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/06/2019] [Accepted: 02/06/2019] [Indexed: 02/07/2023]
Abstract
Long non-coding RNAs (lncRNAs) act as tumor suppressors or oncogenes in tumor development and progression. In the present study, we explored the expression and biological role of the lncRNA DNM3OS in gastric cancer (GC). We observed that DNM3OS was upregulated in GC tissues and cell lines, and high DNM3OS expression was correlated with malignant features and served as an indicator of a poor prognosis for GC patients. DNM3OS knockdown inhibited the proliferation of GC cells, and reduced DNM3OS suppressed tumor growth in vivo. Moreover, DNM3OS depletion inhibited the migration and invasion of GC cells through the suppression of the Snail-mediated epithelial-mesenchymal transition (EMT). In conclusion, we demonstrated that DNM3OS serves as an oncogenic lncRNA in GC, and we implicated DNM3OS as a promising prognostic factor and a potential therapeutic target for GC patients.
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Affiliation(s)
- Shuchang Wang
- Department of Gastrointestinal Surgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Bo Ni
- Department of Gastrointestinal Surgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Zizhen Zhang
- Department of Gastrointestinal Surgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Chaojie Wang
- Department of Gastrointestinal Surgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China
| | - Lulu Wo
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Cixiang Zhou
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China
| | - Qian Zhao
- Department of Pathophysiology, Key Laboratory of Cell Differentiation and Apoptosis of National Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, 200025, China.
| | - Enhao Zhao
- Department of Gastrointestinal Surgery, Ren Ji Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200127, China.
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