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Andersen C, Walters M, Bundgaard L, Berg LC, Vonk LA, Lundgren-Åkerlund E, Henriksen BL, Lindegaard C, Skovgaard K, Jacobsen S. Intraarticular treatment with integrin α10β1-selected mesenchymal stem cells affects microRNA expression in experimental post-traumatic osteoarthritis in horses. Front Vet Sci 2024; 11:1374681. [PMID: 38596460 PMCID: PMC11002141 DOI: 10.3389/fvets.2024.1374681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 03/08/2024] [Indexed: 04/11/2024] Open
Abstract
Osteoarthritis (OA) remains a major cause of lameness in horses, which leads to lost days of training and early retirement. Still, the underlying pathological processes are poorly understood. MicroRNAs (miRNAs) are small non-coding RNAs that serve as regulators of many biological processes including OA. Analysis of miRNA expression in diseased joint tissues such as cartilage and synovial membrane may help to elucidate OA pathology. Since integrin α10β1-selected mesenchymal stem cell (integrin α10-MSC) have shown mitigating effect on equine OA we here investigated the effect of integrin α10-MSCs on miRNA expression. Cartilage and synovial membrane was harvested from the middle carpal joint of horses with experimentally induced, untreated OA, horses with experimentally induced OA treated with allogeneic adipose-derived MSCs selected for the marker integrin α10-MSCs, and from healthy control joints. miRNA expression in cartilage and synovial membrane was established by quantifying 70 pre-determined miRNAs by qPCR. Differential expression of the miRNAs was evaluated by comparing untreated OA and control, untreated OA and MSC-treated OA, and joints with high and low pathology score. A total of 60 miRNAs were successfully quantified in the cartilage samples and 55 miRNAs were quantified in the synovial membrane samples. In cartilage, miR-146a, miR-150 and miR-409 had significantly higher expression in untreated OA joints than in control joints. Expression of miR-125a-3p, miR-150, miR-200c, and miR-499-5p was significantly reduced in cartilage from MSC-treated OA joints compared to the untreated OA joints. Expression of miR-139-5p, miR-150, miR-182-5p, miR-200a, miR-378, miR-409-3p, and miR-7177b in articular cartilage reflected pathology score. Several of these miRNAs are known from research in human patients with OA and from murine OA models. Our study shows that these miRNAs are also differentially expressed in experimental equine OA, and that expression depends on OA severity. Moreover, MSC treatment, which resulted in less severe OA, also affected miRNA expression in cartilage.
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Affiliation(s)
- Camilla Andersen
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Taastrup, Denmark
| | - Marie Walters
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Taastrup, Denmark
| | - Louise Bundgaard
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Taastrup, Denmark
| | - Lise Charlotte Berg
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Taastrup, Denmark
| | | | | | | | - Casper Lindegaard
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Taastrup, Denmark
| | - Kerstin Skovgaard
- Department of Biotechnology and Biomedicine, Technical University of Denmark, Lyngby, Denmark
| | - Stine Jacobsen
- Department of Veterinary Clinical Sciences, Faculty of Health and Medical Sciences, University of Copenhagen, Taastrup, Denmark
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2
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Zhang J, Zhang L, Yao G, Zhao H, Qiao P, Wu S. lncRNA-Gm5532 regulates osteoclast differentiation through the miR-125a-3p/TRAF6 axis. Acta Biochim Biophys Sin (Shanghai) 2024; 56:54-61. [PMID: 38098360 PMCID: PMC10875346 DOI: 10.3724/abbs.2023245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 07/27/2023] [Indexed: 01/26/2024] Open
Abstract
Long noncoding RNAs (lncRNAs) are important regulators of bone metabolism. In this study, lncRNA microarray analysis was used to identify differentially expressed lncRNAs in differentiated osteoclasts. lncRNA-Gm5532 is highly expressed during osteoclast differentiation. lncRNA-Gm5532 knockdown impairs osteoclast formation and bone resorption. Mechanistic experiments show that lncRNA-Gm5532 functions as a competing endogenous RNA (ceRNA) and acts as a sponge for miR-125a-3p, which promotes TNF receptor-associated factor 6 (TRAF6) expression. miR-125a-3p mimics suppress osteoclast differentiation and TAK1/NF-κB/MAPK signaling. The miR-125a-3p inhibitor reverses the negative effects of siGm5532 on osteoclast differentiation. In summary, our study reveals that lncRNA-Gm5532 functions as an activator in osteoclast differentiation by targeting the miR-125a-3p/TRAF6 axis, making it a novel biomarker and potential therapeutic target for osteoporosis.
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Affiliation(s)
- Jian Zhang
- />Institute of Laboratory Animal ScienceGuizhou University of Traditional Chinese MedicineGuiyang550021China
| | - Lingyan Zhang
- />Institute of Laboratory Animal ScienceGuizhou University of Traditional Chinese MedicineGuiyang550021China
| | - Gang Yao
- />Institute of Laboratory Animal ScienceGuizhou University of Traditional Chinese MedicineGuiyang550021China
| | - Hai Zhao
- />Institute of Laboratory Animal ScienceGuizhou University of Traditional Chinese MedicineGuiyang550021China
| | - Penghai Qiao
- />Institute of Laboratory Animal ScienceGuizhou University of Traditional Chinese MedicineGuiyang550021China
| | - Shuguang Wu
- />Institute of Laboratory Animal ScienceGuizhou University of Traditional Chinese MedicineGuiyang550021China
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3
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Groven RVM, van Koll J, Poeze M, Blokhuis TJ, van Griensven M. miRNAs Related to Different Processes of Fracture Healing: An Integrative Overview. Front Surg 2021; 8:786564. [PMID: 34869574 PMCID: PMC8639603 DOI: 10.3389/fsurg.2021.786564] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2021] [Accepted: 10/25/2021] [Indexed: 12/21/2022] Open
Abstract
Fracture healing is a complex, dynamic process that is directed by cellular communication and requires multiple cell types, such as osteoblasts, osteoclasts, and immune cells. Physiological fracture healing can be divided into several phases that consist of different processes, such as angiogenesis, osteogenesis, and bone resorption/remodelling. This is needed to guarantee proper bone regeneration after fracture. Communication and molecular regulation between different cell types and within cells is therefore key in successfully orchestrating these processes to ensure adequate bone healing. Among others, microRNAs (miRNAs) play an important role in cellular communication. microRNAs are small, non-coding RNA molecules of ~22 nucleotides long that can greatly influence gene expression by post-transcriptional regulation. Over the course of the past decade, more insights have been gained in the field of miRNAs and their role in cellular signalling in both inter- and intracellular pathways. The interplay between miRNAs and their mRNA targets, and the effect thereof on different processes and aspects within fracture healing, have shown to be interesting research topics with possible future diagnostic and therapeutic potential. Considering bone regeneration, research moreover focusses on specific microRNAs and their involvement in individual pathways. However, it is required to combine these data to gain more understanding on the effects of miRNAs in the dynamic process of fracture healing, and to enhance their translational application in research, as well as in the clinic. Therefore, this review aims to provide an integrative overview on miRNAs in fracture healing, related to several key aspects in the fracture healing cascade. A special focus will be put on hypoxia, angiogenesis, bone resorption, osteoclastogenesis, mineralization, osteogenesis, osteoblastogenesis, osteocytogenesis, and chondrogenesis.
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Affiliation(s)
- Rald V M Groven
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, Netherlands.,Division of Traumasurgery, Department of Surgery, Maastricht University Medical Center, Maastricht, Netherlands
| | - Johan van Koll
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, Netherlands
| | - Martijn Poeze
- Division of Traumasurgery, Department of Surgery, Maastricht University Medical Center, Maastricht, Netherlands
| | - Taco J Blokhuis
- Division of Traumasurgery, Department of Surgery, Maastricht University Medical Center, Maastricht, Netherlands
| | - Martijn van Griensven
- Department of Cell Biology-Inspired Tissue Engineering, MERLN Institute for Technology-Inspired Regenerative Medicine, Maastricht University, Maastricht, Netherlands
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4
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Crisafulli L, Ficara F. Micro-RNAs: A safety net to protect hematopoietic stem cell self-renewal. WILEY INTERDISCIPLINARY REVIEWS-RNA 2021; 13:e1693. [PMID: 34532984 PMCID: PMC9285953 DOI: 10.1002/wrna.1693] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Revised: 08/24/2021] [Accepted: 08/25/2021] [Indexed: 11/05/2022]
Abstract
The hematopoietic system is sustained over time by a small pool of hematopoietic stem cells (HSCs). They reside at the apex of a complex hierarchy composed of cells with progressively more restricted lineage potential, regenerative capacity, and with different proliferation characteristics. Like other somatic stem cells, HSCs are endowed with long-term self-renewal and multipotent differentiation ability, to sustain the high turnover of mature cells such as erythrocytes or granulocytes, and to rapidly respond to acute peripheral stresses including bleeding, infections, or inflammation. Maintenance of both attributes over time, and of the proper balance between these opposite features, is crucial to ensure the homeostasis of the hematopoietic system. Micro-RNAs (miRNAs) are short non-coding RNAs that regulate gene expression posttranscriptionally upon binding to specific mRNA targets. In the past 10 years they have emerged as important players for preserving the HSC pool by acting on several biological mechanisms, such as maintenance of the quiescent state while preserving proliferation ability, prevention of apoptosis, premature differentiation, lineage skewing, excessive expansion, or retention within the BM niche. miRNA-mediated posttranscriptional fine-tuning of all these processes constitutes a safety mechanism to protect HSCs, by complementing the action of transcription factors and of other regulators and avoiding unwanted expansion or aplasia. The current knowledge of miRNAs function in different aspects of HSC biology, including consequences of aberrant miRNA expression, will be reviewed; yet unsolved issues will be discussed. This article is categorized under: RNA in Disease and Development > RNA in Disease RNA in Disease and Development > RNA in Development.
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Affiliation(s)
- Laura Crisafulli
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Milan, Italy.,IRCCS Humanitas Research Hospital, Milan, Italy
| | - Francesca Ficara
- UOS Milan Unit, Istituto di Ricerca Genetica e Biomedica (IRGB), CNR, Milan, Italy.,IRCCS Humanitas Research Hospital, Milan, Italy
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Sheng Z, Xiaoping H, Lu D, XiZhe W, Jie Z, Qing L, Yong C. Identification of key non-coding RNAs and transcription factors regulators and their potential drugs for steroid-induced femoral head necrosis. Genomics 2020; 113:490-496. [PMID: 33385494 DOI: 10.1016/j.ygeno.2020.12.034] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2019] [Revised: 09/20/2020] [Accepted: 12/22/2020] [Indexed: 12/09/2022]
Abstract
Steroid-induced necrosis of femoral head (SINFH) is a femoral head necrotic disease caused by prolonged use of hormones. The detailed pathogenesis has not been fully demonstrated. In this study, we employed the bioinformatics approach to probe the roles of SINFH inhibitors. Core dysfunction modules related to SINFH was obtained. Meanwhile, GO and KEGG analysis of genes in dysfunction modules are carried out. Furthermore, the pivot prediction analysis of dysfunction modules related to ncRNA and transcription factor (TF) has been performed. The functions of the enriched modules were focused on multiple perspectives, including circulation, gland development, bone development and reconstruction, calcium production, and fatty acid metabolism regulation. The ncRNAs and TFs analysis showed that miR-322-5p, miR-124-3p, miR-125a-3p, and Ctnnb1 were important members of SINFH dysfunction. Drug targets suggested that Zinc and adenosine monophosphate may have an impact on SINFH dysfunction. SINFH was closely related to bone development and reconstruction.
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Affiliation(s)
- Zhai Sheng
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Han Xiaoping
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Ding Lu
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Wang XiZhe
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Zhang Jie
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Lv Qing
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China
| | - Cui Yong
- The Fifth Affiliated Hospital of Xinjiang Medical University, Urumqi 830011, China.
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Peng T, Peng JJ, Miao GY, Tan ZQ, Liu B, Zhou E. miR‑125/CDK2 axis in cochlear progenitor cell proliferation. Mol Med Rep 2020; 23:102. [PMID: 33300064 PMCID: PMC7723065 DOI: 10.3892/mmr.2020.11741] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Accepted: 10/16/2020] [Indexed: 12/25/2022] Open
Abstract
Hearing loss ranks fourth among the principal causes of disability worldwide, and manipulation of progenitor cells may be a key strategy for hair cell regeneration. The present study investigated the role and mechanism of miR‑125 on the proliferation of cochlear progenitor cells (CPCs). CPCs were isolated from the cochleae of neonatal rats, and their morphology was observed. Furthermore, the differentiation ability of CPCs was determined by assessing the expression of 5‑bromodeoxyuridine (BrdU), nestin and myosin VII by immunofluorescence. The expression levels of miR‑125 and cyclin‑dependent kinase 2 (CDK2) as well as the cell proliferation of CPCs were assessed. In addition, following gain‑ and loss‑of‑function assays, the cell cycle was examined by flow cytometry, and the expression levels of miR‑125, CDK2, proliferating cell nuclear antigen (PCNA) and nestin were determined by reverse transcription‑quantitative PCR and western blotting. The binding sites between miR‑125 and CDK2 were predicted by TargetScan and identified by the dual luciferase reporter assay. The results demonstrated that different types of progenitor spheres were observed from CPCs with positive expression of BrdU, nestin and myosin VII. Following in vitro incubation for 2, 4 and 7 days, the spheres were enlarged, and CPC proliferation gradually increased and reached a plateau after further incubation for 3 days. Furthermore, the expression levels of nestin and PCNA in CPCs increased and then decreased during in vitro incubation for 2, 4 and 7 days. Following this incubation, the expression levels of miR‑125 in CPCs decreased; thereafter, its expression increased, and the expression pattern was different from that of CDK2. In addition, miR‑125 overexpression in CPCs decreased the expression of CDK2 and the number of cells in the S phase. Different expression patterns were found in CPCs in response to the miR‑125 knockdown. In addition, miR‑125 directly targeted CDK2. Simultaneous knockdown of miR‑125 and CDK2 enhanced CPC proliferation compared with CDK2 knockdown alone. Taken together, the findings from the present study suggested that miR‑125 may inhibit CPC proliferation by downregulating CDK2. The present study may provide a novel therapeutic direction for treatment of hearing loss.
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Affiliation(s)
- Tao Peng
- Department of Otolaryngology and Head and Neck Surgery, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410007, P.R. China
| | - Jing-Jing Peng
- Department of Obstetrics and Gynecology, Changsha Maternal and Child Health Care Hospital, Changsha, Hunan 410005, P.R. China
| | - Gang-Yong Miao
- Department of Otolaryngology and Head and Neck Surgery, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410007, P.R. China
| | - Zhi-Qiang Tan
- Department of Otolaryngology and Head and Neck Surgery, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410007, P.R. China
| | - Bin Liu
- Department of Otolaryngology and Head and Neck Surgery, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410007, P.R. China
| | - En Zhou
- Department of Otolaryngology and Head and Neck Surgery, Hunan Provincial People's Hospital, First Affiliated Hospital of Hunan Normal University, Changsha, Hunan 410007, P.R. China
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7
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Differential expression of microRNAs in the hippocampi of male and female rodents after chronic alcohol administration. Biol Sex Differ 2020; 11:65. [PMID: 33228793 PMCID: PMC7684718 DOI: 10.1186/s13293-020-00342-3] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Accepted: 11/09/2020] [Indexed: 12/14/2022] Open
Abstract
Background Women are more vulnerable than men to the neurotoxicity and severe brain damage caused by chronic heavy alcohol use. In addition, brain damage due to chronic heavy alcohol use may be associated with sex-dependent epigenetic modifications. This study aimed to identify microRNAs (miRNAs) and their target genes that are differentially expressed in the hippocampi of male and female animal models in response to alcohol. Methods After chronic alcohol administration (3~3.5 g/kg/day) in male (control, n = 10; alcohol, n = 12) or female (control, n = 10; alcohol, n = 12) Sprague-Dawley rats for 6 weeks, we measured body weights and doublecortin (DCX; a neurogenesis marker) concentrations and analyzed up- or downregulated miRNAs using GeneChip miRNA 4.0 arrays. The differentially expressed miRNAs and their putative target genes were validated by RT-qPCR. Results Alcohol attenuated body weight gain only in the male group. On the other hand, alcohol led to increased serum AST in female rats and decreased serum total cholesterol concentrations in male rats. The expression of DCX was significantly reduced in the hippocampi of male alcohol-treated rats. Nine miRNAs were significantly up- or downregulated in male alcohol-treated rats, including upregulation of miR-125a-3p, let-7a-5p, and miR-3541, and downregulation of their target genes (Prdm5, Suv39h1, Ptprz1, Mapk9, Ing4, Wt1, Nkx3-1, Dab2ip, Rnf152, Ripk1, Lin28a, Apbb3, Nras, and Acvr1c). On the other hand, 7 miRNAs were significantly up- or downregulated in alcohol-treated female rats, including downregulation of miR-881-3p and miR-504 and upregulation of their target genes (Naa50, Clock, Cbfb, Arih1, Ube2g1, and Gng7). Conclusions These results suggest that chronic heavy alcohol use produces sex-dependent effects on neurogenesis and miRNA expression in the hippocampus and that sex differences should be considered when developing miRNA biomarkers to diagnose or treat alcoholics. Supplementary Information The online version contains supplementary material available at 10.1186/s13293-020-00342-3.
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8
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Zhao H, Lu A, He X. Roles of MicroRNAs in Bone Destruction of Rheumatoid Arthritis. Front Cell Dev Biol 2020; 8:600867. [PMID: 33330493 PMCID: PMC7710907 DOI: 10.3389/fcell.2020.600867] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2020] [Accepted: 10/26/2020] [Indexed: 12/21/2022] Open
Abstract
As an important pathological result of rheumatoid arthritis (RA), bone destruction will lead to joint injury and dysfunction. The imbalance of bone metabolism caused by increased osteoclast activities and decreased osteoblast activities is the main cause of bone destruction in RA. MicroRNAs (MiRNAs) play an important role in regulating bone metabolic network. Recent studies have shown that miRNAs play indispensable roles in the occurrence and development of bone-related diseases including RA. In this paper, the role of miRNAs in regulating bone destruction of RA in recent years, especially the differentiation and activities of osteoclast and osteoblast, is reviewed. Our results will not only help provide ideas for further studies on miRNAs’ roles in regulating bone destruction, but give candidate targets for miRNAs-based drugs research in bone destruction therapy of RA as well.
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Affiliation(s)
- Hanxiao Zhao
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China.,The Second Clinical College of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Aiping Lu
- Law Sau Fai Institute for Advancing Translational Medicine in Bone and Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, Kowloon Tong, Hong Kong.,Shanghai GuangHua Hospital of Integrated Traditional Chinese and Western Medicine, Institute of Arthritis Research, Shanghai Academy of Chinese Medical Sciences, Shanghai, China
| | - Xiaojuan He
- Institute of Basic Research in Clinical Medicine, China Academy of Chinese Medical Sciences, Beijing, China
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9
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Beneficial role of microRNA-328-3p in fracture healing by enhancing osteoblastic viability through the PTEN/PI3K/AKT pathway. Exp Ther Med 2020; 20:271. [PMID: 33199996 PMCID: PMC7664617 DOI: 10.3892/etm.2020.9401] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Accepted: 09/29/2020] [Indexed: 12/12/2022] Open
Abstract
Although fragility fracture is a global public health burden, the mechanisms underlying fracture healing remain unclear. The present study aimed to assess the dynamic expression pattern of microRNA-328-3p (miR-328-3p) during fracture healing in patients with fragility fracture and to explore the functional role and mechanisms of miR-328-3p in the regulation of osteoblastic viability. The expression levels of miR-328-3p was examined using reverse transcription-quantitative PCR (RT-qPCR). Osteoblastic proliferation and apoptosis were analyzed via MTT and flow cytometry assays. A luciferase reporter assay was adopted to confirm the interaction between miR-328-3p and its target gene PTEN, and western blotting was used to explore the activity of PI3K/AKT signaling. The results of the present study demonstrated that serum miR-328-3p expression did not significantly differ at the early stage of healing in patients with fracture, but was markedly decreased 14 and 21 days post fixation (P<0.01). PTEN was demonstrated to be a target gene of miR-328-3p and was inhibited by miR-328-3p overexpression in osteoblasts (P<0.001). miR-328-3p overexpression increased osteoblastic proliferation but decreased apoptotic rate, with these effects being reversed by PTEN overexpression (P<0.05). The expression of phosphorylated-AKT was elevated in osteoblasts by miR-328-3p overexpression, but this effect was abolished by overexpressing PTEN. Thus, the present study revealed that miR-328-3p may accelerate fracture healing by promoting osteoblastic viability through the PTEN/PI3K/AKT pathway.
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Zhang W, Zhu Y, Chen J, Wang J, Yao C, Chen C. Mechanisms of miR‑128‑3p in inhibiting osteoblast differentiation from bone marrow‑derived mesenchymal stromal cells. Mol Med Rep 2020; 22:5041-5052. [PMID: 33174052 PMCID: PMC7646956 DOI: 10.3892/mmr.2020.11600] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 05/27/2020] [Indexed: 11/21/2022] Open
Abstract
The authors' previous study demonstrated that miR-128 may exert an inhibitory effect on the osteogenic differentiation of bone marrow-derived mesenchymal stem cells (BM-MSCs), but its downstream mechanisms remain to be elucidated. The aim of the present study was to investigate the microRNA (miRNA/miR) and mRNA profiles of differentiated and undifferentiated BM-MSCs and explore new downstream targets for miR-128. The sequencing datasets of GSE107279 (miRNA) and GSE112318 (mRNA) were downloaded from the Gene Expression Omnibus database. The differentially expressed miRNAs (DEMs) and genes (DEGs) were identified using the DESeq2 method. The target genes of DEMs were predicted by the miRwalk 2.0 database. The hub target genes of miR-128 were screened by constructing the protein-protein interaction (PPI) network and module analysis. The expression levels of miR-128 and crucial target genes were validated by reverse transcription-quantitative (RT-q) PCR before or after transfection of miR-128 mimics to BM-MSCs. The miRNA expression profile analysis identified miR-128 as one of the significantly downregulated DEMs (total 338) in differentiated BM-MSCs compared with the undifferentiated control. A total of 103 predicted target genes of miR-128-3p were overlapped with upregulated DEGs. By calculating the topological properties of each protein in the PPI network, 6 upregulated genes (KIT, NTRK2, YWHAB, GAB1, AXIN1 and RUNX1; fold change was the highest for NTRK2) were considered to be hub genes. Of these, 4 were enriched in module 4 (RUNX1, KIT, GAB1 and AXIN1; RUNX1 was particularly crucial as it can interact with the others), while one was enriched in module 7 (YWHAB). The expression levels of miR-128 and these 6 target genes during the osteogenic differentiation were experimentally confirmed by RT-qPCR. In addition, the expression levels of these 6 genes were significantly reversed after transfection of miR-128-3p mimics into rat BM-MSCs compared with the miR-control group. These findings indicated that miR-128-3p may inhibit the osteoblast differentiation of BM-MSCs by downregulation of these 6 genes, particularly RUNX1, YWHAB and NTRK2.
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Affiliation(s)
- Wen Zhang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Yu Zhu
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Junsheng Chen
- Engineering Research Center of Cell and Therapeutic Antibody, Ministry of Education, School of Pharmacy, Shanghai Jiao Tong University, Shanghai 200240, P.R. China
| | - Jiaxing Wang
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Chen Yao
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, P.R. China
| | - Chen Chen
- Department of Orthopedic Surgery, Shanghai Jiao Tong University Affiliated Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, P.R. China
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11
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Chen N, Wu D, Li H, Liu Y, Yang H. MiR-17-3p inhibits osteoblast differentiation by downregulating Sox6 expression. FEBS Open Bio 2020; 10:2499-2506. [PMID: 32946669 PMCID: PMC7609786 DOI: 10.1002/2211-5463.12979] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Revised: 08/15/2020] [Accepted: 09/10/2020] [Indexed: 11/18/2022] Open
Abstract
Osteoporosis and osteoarthritis are orthopedic disorders that affect millions of elderly people worldwide; stimulation of bone formation is a potential therapeutic strategy for the treatment of these conditions. As the only bone‐forming cells, osteoblasts play a key role in bone reconstruction. The microRNA miR‐17‐3p is downregulated during osteogenic differentiation of human bone marrow mesenchymal stem cells, but its precise role in this process is unknown. Here, we investigated the role of miR‐17‐3p in osteoblast differentiation. An in vitro model of osteogenesis was established by treating MC3T3‐E1 murine preosteoblast cells with bone morphogenetic protein 2 (BMP2). The expression of miR‐17‐3p in BMP2‐induced MC3T3‐E1 cells was detected by reverse transcription‐quantitative PCR, and its effects on cells transfected with miR‐17‐3p mimic or inhibitor were evaluated by Alizarin Red staining, alkaline phosphatase (ALP) activity assay, and by detection of osteoblast markers including the ALP, collagen type I α1 chain, and osteopontin genes. Bioinformatics analysis was carried out to identify putative target genes of miR‐17‐3p, and the luciferase reporter assay was used for functional validation. Rescue experiments were performed to determine whether SRY‐box transcription factor 6 (Sox6) plays a role in the regulation of osteoblast differentiation by miR‐17‐3p. We report that miR‐17‐3p was downregulated upon BMP2‐induced osteoblast differentiation in MC3T3‐E1 cells, and this was accompanied by decreased differentiation and mineralization, ALP activity, and expression of osteogenesis‐related genes. Sox6 was confirmed to be a target gene of miR‐17‐3p in osteoblasts, and the inhibitory effect of miR‐17‐3p on osteoblast differentiation was observed to occur via Sox6. These results suggest the existence of a novel mechanism underlying miRNA‐mediated regulation of osteogenesis, which has potential implications for the treatment of orthopedic disorders.
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Affiliation(s)
- Nan Chen
- Department of Orthopedics, the First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Di Wu
- Department of Orthopedics, the First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Hua Li
- Department of Orthopedics, the First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Yi Liu
- Department of Orthopedics, the First Affiliated Hospital of Kunming Medical University, Kunming, China
| | - Hao Yang
- Department of Orthopedics, the First Affiliated Hospital of Kunming Medical University, Kunming, China
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Wang J, Zheng Y, Bai B, Song Y, Zheng K, Xiao J, Liang Y, Bao L, Zhou Q, Ji L, Feng X. MicroRNA-125a-3p participates in odontoblastic differentiation of dental pulp stem cells by targeting Fyn. Cytotechnology 2020; 72:69-79. [PMID: 31953701 DOI: 10.1007/s10616-019-00358-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2019] [Accepted: 11/23/2019] [Indexed: 12/30/2022] Open
Abstract
Fyn is a member of the protein tyrosine kinase family and its overexpression is associated with various types of inflammation. MicroRNAs can regulate the expression of target genes and play an important role in varied physiological and pathological processes. Based on the important role of Fyn and microRNA-125a-3p (miR-125a-3p) in inflammation, and combined with the bioinformatics studies, we performed in this study and chose miR-125a-3p as the focus of our research. During the progression of inflammation, we found that the expression of miR-125a-3p was decreased while the expression of Fyn was up-regulated. Fyn formed a complex with Neuropilin-1, which inhibited odontoblastic differentiation and expanded inflammatory responses through nuclear factor-κB signal pathways in dental pulp stem cells (DPSCs). These findings suggested that miR-125a-3p plays an important role in odontoblastic differentiation of DPSCs by targeting Fyn, implying its therapeutic potential in dental caries.
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Affiliation(s)
- Jihua Wang
- Department of Stomatology, Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Ya Zheng
- Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China.,Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, Jiangsu, China
| | - Bingbing Bai
- Department of Stomatology, Affiliated Hospital of Nantong University, Nantong, 226001, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Yihua Song
- Department of Stomatology, Affiliated Hospital of Nantong University, Nantong, 226001, China
| | - Ke Zheng
- Department of Stomatology, Wuxi No. 2 People Hospital, Wuxi, 214000, China
| | - Jinwen Xiao
- Department of Stomatology, People's Hospital of Haimen, Nantong, China
| | - Yi Liang
- Department of Stomatology, Affiliated Hospital of Nantong University, Nantong, 226001, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Liuliu Bao
- Department of Stomatology, Affiliated Hospital of Nantong University, Nantong, 226001, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Qiao Zhou
- Department of Stomatology, Affiliated Hospital of Nantong University, Nantong, 226001, China.,Research Center of Clinical Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Lujun Ji
- Department of Stomatology, Tongzhou People's Hospital, Taizhou, 225300, China.
| | - Xingmei Feng
- Department of Stomatology, Affiliated Hospital of Nantong University, Nantong, 226001, China.
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13
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Farzaneh M, Alishahi M, Derakhshan Z, Sarani NH, Attari F, Khoshnam SE. The Expression and Functional Roles of miRNAs in Embryonic and Lineage-Specific Stem Cells. Curr Stem Cell Res Ther 2019; 14:278-289. [PMID: 30674265 DOI: 10.2174/1574888x14666190123162402] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 12/15/2018] [Accepted: 01/03/2019] [Indexed: 01/01/2023]
Abstract
The discovery of small non-coding RNAs began an interesting era in cellular and molecular biology. To date, miRNAs are the best recognized non-coding RNAs for maintenance and differentiation of pluripotent stem cells including embryonic stem cells (ES), induced pluripotent stem cells (iPSC), and cancer stem cells. ES cells are defined by their ability to self-renew, teratoma formation, and to produce numerous types of differentiated cells. Dual capacity of ES cells for self-renewal and differentiation is controlled by specific interaction with the neighboring cells and intrinsic signaling pathways from the level of transcription to translation. The ES cells have been the suitable model for evaluating the function of non-coding RNAs and in specific miRNAs. So far, the general function of the miRNAs in ES cells has been assessed in mammalian and non-mammalian stem cells. Nowadays, the evolution of sequencing technology led to the discovery of numerous miRNAs in human and mouse ES cells that their expression levels significantly changes during proliferation and differentiation. Several miRNAs have been identified in ectoderm, mesoderm, and endoderm cells, as well. This review would focus on recent knowledge about the expression and functional roles of miRNAs in embryonic and lineage-specific stem cells. It also describes that miRNAs might have essential roles in orchestrating the Waddington's landscape structure during development.
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Affiliation(s)
- Maryam Farzaneh
- Department of Stem Cells and Developmental Biology, Cell Science Research Center, Royan Institute for Stem Cell Biology and Technology, ACECR, Tehran, Iran
| | - Masoumeh Alishahi
- Department of Biology, Tehran North Branch, Islamic Azad University, Tehran, Iran
| | - Zahra Derakhshan
- Department of Reproductive Biology, School of Advanced Medical Sciences and Technologies, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Neda H Sarani
- Faculty of Paramedical, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Farnoosh Attari
- Department of Animal Biology, School of Biology, College of Science, University of Tehran, Tehran, Iran
| | - Seyed E Khoshnam
- Physiology Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran
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14
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Lv R, Pan X, Song L, Sun Q, Guo C, Zou S, Zhou Q. MicroRNA-200a-3p accelerates the progression of osteoporosis by targeting glutaminase to inhibit osteogenic differentiation of bone marrow mesenchymal stem cells. Biomed Pharmacother 2019; 116:108960. [PMID: 31112871 DOI: 10.1016/j.biopha.2019.108960] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 05/05/2019] [Accepted: 05/08/2019] [Indexed: 10/26/2022] Open
Abstract
To uncover the role of microRNA-200a-3p in regulating osteogenic differentiation of MSCs via targeting glutaminase, thus influencing the progression of OP. Serum level of microRNA-200a-3p in OP patients and healthy controls was determined by qRT-PCR. MicroRNA-200a-3p level in MSCs undergoing osteogenic differentiation for different days was examined as well. ALP activity, calcification nodules and relative levels of Bglap, Runx2 and OPN in MSCs overexpressing microRNA-200a-3p undergoing osteogenic differentiation were detected. Relative l-glutaminase uptake in MSCs undergoing osteogenic differentiation for different days was determined. After transfection of si-GLS in MSCs undergoing osteogenic differentiation, l-glutaminase uptake, ALP activity and relative levels of Bglap, Runx2 and OPN were detected. The potential binding relationship between microRNA-200a-3p and GLS was tested by dual-luciferase reporter gene assay. Finally, rescue experiments were conducted to elucidate the role of microRNA-200a-3p/GLS in osteogenic differentiation of MSCs. MicroRNA-200a-3p level was higher in serum of OP patients relative to controls. Its level in MSCs gradually decreased with the prolongation of osteogenic differentiation. Overexpression of microRNA-200a-3p reduced cell viability, ALP activity, number and volume of calcification nodule. The mRNA levels of Bglap, Runx2 and OPN were downregulated by overexpressed microRNA-200a-3p. The cell viability, ALP activity, number and volume of calcification nodule were reduced when microRNA-200a-3p was knocked down. The mRNA levels of Bglap, Runx2 and OPN were upregulated when transfected microRNA-200a-3p inhibitor. l-glutaminase uptake increased with the prolongation of osteogenic differentiation in MSCs. Knockdown of GLS attenuated l-glutaminase uptake and ALP activity, as well as downregulated Bglap, Runx2 and OPN. Besides, GLS was verified to directly bind to microRNA-200a-3p. GLS overexpression reversed the inhibitory effects of overexpressed microRNA-200a-3p on osteogenic differentiation of MSCs. MicroRNA-200a-3p suppresses osteogenic differentiation of MSCs via targeting glutaminase, thereafter accelerating the progression of OP.
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Affiliation(s)
- Renfa Lv
- Department of Orthopaedics, The 908th Hospital of Chinese PLA Joint Logistic Support Force, Yintan, 335000, Jiangxi, China
| | - Xiaofeng Pan
- Department of Orthopaedics, The 908th Hospital of Chinese PLA Joint Logistic Support Force, Yintan, 335000, Jiangxi, China
| | - Lei Song
- Department of Orthopaedics, The Southwest hospital affiliated to Army Medical University, Chongqing, 401120, China
| | - Qi Sun
- Department of Orthopaedics, The 908th Hospital of Chinese PLA Joint Logistic Support Force, Yintan, 335000, Jiangxi, China
| | - Congtao Guo
- Department of Orthopaedics, The Southwest hospital affiliated to Army Medical University, Chongqing, 401120, China
| | - Shu Zou
- Department of Orthopaedics, The 908th Hospital of Chinese PLA Joint Logistic Support Force, Yintan, 335000, Jiangxi, China
| | - Qiang Zhou
- Department of Orthopaedics, The Third Affiliated Hospital of Chongqing Medical University(Gener Hospital), Chongqing, 401120, China.
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15
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Gu Z, Long J, Li Y, Wang X, Wang H. MiR-125a-3p negatively regulates osteoblastic differentiation of human adipose derived mesenchymal stem cells by targeting Smad4 and Jak1. Am J Transl Res 2019; 11:2603-2615. [PMID: 31105866 PMCID: PMC6511781] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 02/07/2019] [Indexed: 06/09/2023]
Abstract
Osteogenesis is a complex process which relies on the coordination of signals and transcription factors. Recent evidence indicates that microRNAs (miRNAs) act as important post-transcriptional regulators in a large number of biological processes including osteoblast differentiation. In this study, we investigated the expression and biological effect of miR-125a-3p during osteogenic differentiation of human adipose derived mesenchymal stem cells (hADSCs). We observed an obvious decrease in miR-125a-3p level during osteogenic differentiation. By using gain- and loss-of function experiments, we noticed that miR-125a-3p could suppress the osteogenic differentiation of hADSCs. Moreover, miR-125a-3p over-expression in hADSCs by transfection with miR-125a-3p mimics significantly inhibited cell proliferation by MTT. Flow cytometry analysis further demonstrated that forced expression of miR-125a-3p induced cell cycle G1/S phase arrest and apoptosis. In addition, we performed bioinformatic analysis, luciferase reporter assay and western blot to confirm that miR-125a-3p could regulate Smad4 and Jak1 expression negatively. Meanwhile, Smad4 and Jak1 were up-regulated after osteogenic differentiation and the down-regulation of endogenous Smad4 and Jak1 suppressed the osteogenic differentiation of hADSCs. Taken together, these data indicated that miR-125a-3p is Smad4 and Jak1 regulator, and it has a crucially physiological function in osteogenic differentiation of hADSCs.
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Affiliation(s)
- Zhiyuan Gu
- Department of Orthopedic, The Affiliated Cancer Hospital of Zhengzhou UniversityZhengzhou 450008, Henan Province, China
| | - Jun Long
- Department of Orthopedic, First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510080, Guangdong Province, China
| | - Yumin Li
- Department of Orthopedic, The First People’s Hospital of Nanning CityNanning 530001, Guangxi Province, China
| | - Xin Wang
- Department of Orthopedic, The Affiliated Cancer Hospital of Zhengzhou UniversityZhengzhou 450008, Henan Province, China
| | - Hua Wang
- Department of Orthopedic, First Affiliated Hospital of Sun Yat-sen UniversityGuangzhou 510080, Guangdong Province, China
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16
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Sun L, Lian JX, Meng S. MiR-125a-5p promotes osteoclastogenesis by targeting TNFRSF1B. Cell Mol Biol Lett 2019; 24:23. [PMID: 30976285 PMCID: PMC6437974 DOI: 10.1186/s11658-019-0146-0] [Citation(s) in RCA: 58] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Accepted: 03/04/2019] [Indexed: 02/05/2023] Open
Abstract
Aim To investigate the dysregulation of microRNAs (miRNAs) during the differentiation of osteoclasts and the precise roles of miR-125a-5p in the differentiation of osteoclasts. Methods The cell model of RAW 264.7 osteoclast precursor cell differentiation induced by RANKL plus M-CSF stimulation was established. During the early stage of osteoclast differentiation, miRNA expression profiles were detected using the biochip technique and analyzed by cluster analysis. TargetScan, miRTarBase and miRDB database analysis was applied to find the key target genes of miR-125a-5p. A dual luciferase experiment was conducted to identify the direct target of miR-125a-5p. MiR-125a-5p mimic transfection and anti-miR-125-5p treatment were conducted to verify the role of miR-125q-5p in osteoclast differentiation. The levels of triiodothyronine receptor auxiliary protein (TRAP), matrix metallopeptidase 2 (MMP-2), MMP-9 and cathepsin K were analyzed by qRT-PCR and western blot assay. The expression levels of MMP-2 and MMP-9 were determined using western blotting and immunofluorescence assay. The migration and invasion of RAW 264.7 cells were assessed by wound healing and Transwell invasion assays. The proliferation of RAW 264.7 osteoclast precursor cells was detected using MTT assay. Results There were 44 microRNAs differently expressed during the differentiation of RAW 264.7 osteoclast precursor cells into osteoclasts, 35 of which were up-regulated and 9 were down-regulated. By luciferase reporter assay, it was confirmed that the TNF receptor superfamily member 1B gene (TNFRSF1B) was the target gene of miR-125a-5p. Up-regulation of miR-125a-5p inhibited TNFRSF1B protein expression and promoted osteoclast differentiation whereas down-regulation of miR-125a-5p caused completely opposite results. Conclusions In conclusion, overexpression of miR-125a-5p suppresses the expression of TNFRSF1B and promotes osteoclast differentiation. These results reveal the crucial role of miR-125a-5p in the differentiation of osteoclasts.
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Affiliation(s)
- Liang Sun
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3 of RenMinNanlu, Chengdu, 610041 Sichuan China
| | - Jun Xiang Lian
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3 of RenMinNanlu, Chengdu, 610041 Sichuan China
| | - Shu Meng
- State Key Laboratory of Oral Diseases, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, No. 14, Section 3 of RenMinNanlu, Chengdu, 610041 Sichuan China
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17
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Xu Q, Liu Y, Pan H, Xu T, Li Y, Yuan J, Li P, Yao W, Yan W, Ni C. Aberrant expression of miR-125a-3p promotes fibroblast activation via Fyn/STAT3 pathway during silica-induced pulmonary fibrosis. Toxicology 2019; 414:57-67. [PMID: 30658076 DOI: 10.1016/j.tox.2019.01.007] [Citation(s) in RCA: 26] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2018] [Revised: 01/08/2019] [Accepted: 01/11/2019] [Indexed: 12/11/2022]
Abstract
Various miRNAs are dysregulated during initiation and progression of pulmonary fibrosis. However, their function remains limited in silicosis. Here, we observed that miR-125a-3p was downregulated in silica-induced fibrotic murine lung tissues. Ectopic miR-125a-3p expression with chemotherapy attenuated silica-induced pulmonary fibrosis. Further in vitro experiments revealed that TGF-β1 effectively decreased miR-125a-3p expression in fibroblast lines (NIH/3T3 and MRC-5). Overexpression of miR-125a-3p blocked fibroblast activation stimulated by TGF-β1. Mechanistically, miR-125a-3p could bind to the 3'-untranslated region of Fyn and inhibit its expression in both mRNA and protein levels, thus causing inactivation of Fyn downstream effector STAT3. Fyn and p-STAT3, as opposed to miR-125a-3p expression, were elevated in silica-induced fibrotic murine lung tissues and TGF-β1-treated fibroblast lines. Furthermore, Fyn knockdown or p-STAT3 suppression effectively attenuated fibroblast activation and ECM production. Taken together, miR-125a-3p is involved in fibrosis pathogenesis by fibroblast activation, suggesting that targeting miR-125a-3p/Fyn/STAT3 signaling pathway could be a potential therapeutic approach for pulmonary fibrosis.
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Affiliation(s)
- Qi Xu
- Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Yi Liu
- Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Honghong Pan
- Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Tiantian Xu
- Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Yan Li
- Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Jiali Yuan
- Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Ping Li
- Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Wenxi Yao
- Wuxi School of Medicine, Jiangnan University, Wuxi, 214122, China.
| | - Weiwen Yan
- Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
| | - Chunhui Ni
- Department of Occupational Medical and Environmental Health, Center for Global Health, School of Public Health, Nanjing Medical University, Nanjing, 211166, China.
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Zhang Z, Hu P, Xiong J, Wang S. Inhibiting GIT1 reduces the growth, invasion, and angiogenesis of osteosarcoma. Cancer Manag Res 2018; 10:6445-6455. [PMID: 30555255 PMCID: PMC6278701 DOI: 10.2147/cmar.s181066] [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] [Indexed: 12/15/2022] Open
Abstract
Background GIT1, a scaffold protein with ubiquitous multi-domain, is involved in many cellular processes. In recent years, it was proved that GIT1 participated in various tumors’ growth or metastasis. However, the biological function of GIT1 in osteosarcoma is still unclear. In this study, we aimed to investigate the role and mechanism of GIT1 in osteosarcoma. Materials and methods Human osteosarcoma tissues were obtained to investigate the distribution of GIT1. Adequate osteosarcoma cells were stably infected with lentivirus to knockdown GIT1 level and then was used to carry out cell invasion and vascular endothelial growth factor (VEGF) assay in vitro. Orthotopic femoral osteosarcoma model was constructed to investigate the growth, invasion, and angiogenesis in vivo. Western blot was used to detect extracellular signal-regulated kinase (ERK1/2) activation and hypoxia-inducible factor-1 (HIF-1α) expression. Results In this study, we found that GIT1 was distributed in human osteosarcoma tissues and highly expressed in osteosarcoma (OS) cells. Knockdown of GIT1 inhibited cell invasion and VEGF release in vitro and suppressed tumor growth, invasion, and angiogenesis in vivo. Furthermore, knockdown of GIT1 substantially downregulated the protein levels of p-ERK and HIF-1α in OST cells and inhibition of p-ERK by PD98059 could significantly decrease the expression of HIF-1α and concentration of VEGF in GIT1-shRNA-treated cells. Conclusion GIT1 knockdown can effectively inhibit the growth, invasion, and angiogenesis of osteosarcoma. Thus, GIT1 might act as an oncogenic factor in osteosarcoma and could be a potential molecular target for osteosarcoma gene therapy.
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Affiliation(s)
- Zitao Zhang
- Department of Orthopedics, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China,
| | - Polu Hu
- Nanjing Red Cross Blood Center, Nanjing 210003, China
| | - Jin Xiong
- Department of Orthopedics, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China,
| | - Shoufeng Wang
- Department of Orthopedics, The Affiliated Drum Tower Hospital of Nanjing University Medical School, Nanjing 210008, China,
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19
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Ye X, Chen X. miR-149-5p inhibits cell proliferation and invasion through targeting GIT1 in medullary thyroid carcinoma. Oncol Lett 2018; 17:372-378. [PMID: 30655777 PMCID: PMC6313157 DOI: 10.3892/ol.2018.9628] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 10/18/2018] [Indexed: 12/19/2022] Open
Abstract
Previous studies indicate that miR-149 could both inhibit and promote the development of human cancer depending on the tumor type. GIT1 was found to play an important role in regulating cell migration. However, the specific function of miR-149-5p and GIT1 in the progression of medullary thyroid carcinoma (MTC) remains unknown. The purpose of this study was to confirm the function of miR-149-5p in MTC and explore its downstream regulation. Moreover, miR-149-5p level in MTC was detected via RT-quantitative PCR (RT-qPCR). GIT1 expression levels were assessed by RT-qPCR and western blot analysis. The cell proliferation and invasion were detected through MTT or Transwell assay respectively. In addition, miR-149-5p was identified to directly target GIT1 in MTC via dual luciferase assay. The results suggested that miR-149-5p level was obviously declined in MTC. Functionally, miR-149-5p overexpression inhibited proliferation and invasion. Moreover, miR-149-5p directly targeted GIT1 and was negatively associated with its expression in MTC. Conversely, GIT1 expression was obviously increased in MTC. GIT1 overexpression partially reversed the inhibitory action of miR-149-5p in MTC. miR-149-5p suppressed the proliferation and invasion of MTC cells through targeting GIT1, which would create new therapeutic avenues for MTC treatment.
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Affiliation(s)
- Xiaojuan Ye
- Department of Nuclear Medicine, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
| | - Xiaofang Chen
- Department of Nuclear Medicine, Sir Run Run Shaw Hospital, College of Medicine, Zhejiang University, Hangzhou, Zhejiang 310016, P.R. China
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Luo Y, Cao X, Chen J, Gu J, Zhao J, Sun J. MicroRNA‐224 suppresses osteoblast differentiation by inhibiting
SMAD4. J Cell Physiol 2018; 233:6929-6937. [PMID: 29693254 DOI: 10.1002/jcp.26596] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 03/12/2018] [Indexed: 12/16/2022]
Affiliation(s)
- Yuan Luo
- Department of Orthopedic The First Affiliated Hospital of Soochow University Souzhou Jiangsu China
- Department of Orthopedic Taicang Affiliated Hospital of Soochow University Taicang Jiangsu China
| | - Xiaodong Cao
- Department of Orthopedic Taicang Affiliated Hospital of Soochow University Taicang Jiangsu China
| | - Junfeng Chen
- Department of Orthopedic Taicang Affiliated Hospital of Soochow University Taicang Jiangsu China
| | - Jianwei Gu
- Department of Orthopedic Taicang Affiliated Hospital of Soochow University Taicang Jiangsu China
| | - Jitong Zhao
- Department of Orthopedic Taicang Affiliated Hospital of Soochow University Taicang Jiangsu China
| | - Junying Sun
- Department of Orthopedic The First Affiliated Hospital of Soochow University Souzhou Jiangsu China
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The zebrafish miR-125c is induced under hypoxic stress via hypoxia-inducible factor 1α and functions in cellular adaptations and embryogenesis. Oncotarget 2017; 8:73846-73859. [PMID: 29088751 PMCID: PMC5650306 DOI: 10.18632/oncotarget.17994] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/06/2017] [Indexed: 12/15/2022] Open
Abstract
Hypoxia is a unique environmental stress. Hypoxia inducible factor-lα (HIF-lα) is a major transcriptional regulator of cellular adaptations to hypoxic stress. MicroRNAs (miRNAs) as posttranscriptional gene expression regulators occupy a crucial role in cell survival under low-oxygen environment. Previous evidences suggested that miR-125c is involved in hypoxia adaptation, but its precise biological roles and the regulatory mechanism underlying hypoxic responses remain unknown. The present study showed that zebrafish miR-125c is upregulated by hypoxia in a Hif-lα-mediated manner in vitro and in vivo. Dual-luciferase assay revealed that cdc25a is a novel target of miR-125c. An inverse correlation between miR-125c and cdc25a was further confirmed in vivo, suggesting miR-125c as a crucial physiological inhibitor of cdc25a which responds to cellular hypoxia. Overexpression of miR-125c suppressed cell proliferation, led to cell cycle arrest at the G1 phase in ZF4 cells and induced apoptotic responses during embryo development. More importantly, miR-125c overexpression resulted in severe malformation and reduction of motility during zebrafish embryonic development. Taken together, we conclude that miR-125c plays a pivotal role in cellular adaptations to hypoxic stress at least in part through the Hif-1α/miR-125c/cdc25a signaling and has great impact on zebrafish early embryonic development.
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