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Zhang Z, Jing Y, Zhang A, Liu J, Yang H, Lou X, Xu L, Liu M, Zhang Y, Gu J. Long non-coding RNA-NONMMMUT004552.2 regulates the unloading-induced bone loss through the miRNA-15b-5p/Syne1 in mice. NPJ Microgravity 2024; 10:37. [PMID: 38521778 PMCID: PMC10960867 DOI: 10.1038/s41526-024-00382-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Accepted: 03/08/2024] [Indexed: 03/25/2024] Open
Abstract
Exercise-induced mechanical loading can increase bone strength whilst mechanical unloading enhances bone-loss. Here, we investigated the role of lncRNA NONMMUT004552.2 in unloading-induced bone-loss. Knockout of lncRNA NONMMUT004552.2 in hindlimb-unloaded mice caused an increase in the bone formation and osteoblast activity. The silencing of lncRNA NONMMUT004552.2 also decreased the osteoblast apoptosis and expression of Bax and cleaved caspase-3, increased Bcl-2 protein expression in MC3T3-E1 cells. Mechanistic investigations demonstrated that NONMMUT004552.2 functions as a competing endogenous RNA (ceRNA) to facilitate the protein expression of spectrin repeat containing, nuclear envelope 1 (Syne1) by competitively binding miR-15b-5p and subsequently inhibits the osteoblast differentiation and bone formation in the microgravity unloading environment. These data highlight the importance of the lncRNA NONMMUT004552.2/miR-15b-5p/Syne1 axis for the treatment of osteoporosis.
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Affiliation(s)
- Zheng Zhang
- Department of Medical Engineering, PLA Strategic Support Force Characteristic Medical Center, Beijing, 100101, China
| | - Yu Jing
- Department of Haematology, The Fifth Medical Centre of Chinese PLA General Hospital, Beijing, 100071, China
| | - Ang Zhang
- Department of Hematology, PLA Strategic Support Force Characteristic Medical Center, Beijing, 100101, China
| | - JiShan Liu
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Heming Yang
- Department of General Surgery, PLA Strategic Support Force Characteristic Medical Center, Beijing, 100101, China
| | - Xiaotong Lou
- Department of Research, PLA Strategic Support Force Characteristic Medical Center, Beijing, 100101, China
| | - Liyan Xu
- Department of Blood Transfusion, PLA Strategic Support Force Characteristic Medical Center, Beijing, 100101, China
| | - Min Liu
- School of Biological Science and Medical Engineering, Beihang University, Beijing, 100191, China
| | - Yikun Zhang
- Department of Hematology, PLA Strategic Support Force Characteristic Medical Center, Beijing, 100101, China.
| | - Jianwen Gu
- Department of Neurosurgery, PLA Strategic Support Force Characteristic Medical Center, Beijing, 100101, China.
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Zhang Y, Wang Q, Xue H, Guo Y, Wei S, Li F, Gong L, Pan W, Jiang P. Epigenetic Regulation of Autophagy in Bone Metabolism. FUNCTION 2024; 5:zqae004. [PMID: 38486976 PMCID: PMC10935486 DOI: 10.1093/function/zqae004] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2023] [Revised: 01/18/2024] [Accepted: 01/24/2024] [Indexed: 03/17/2024] Open
Abstract
The skeletal system is crucial for supporting bodily functions, protecting vital organs, facilitating hematopoiesis, and storing essential minerals. Skeletal homeostasis, which includes aspects such as bone density, structural integrity, and regenerative processes, is essential for normal skeletal function. Autophagy, an intricate intracellular mechanism for degrading and recycling cellular components, plays a multifaceted role in bone metabolism. It involves sequestering cellular waste, damaged proteins, and organelles within autophagosomes, which are then degraded and recycled. Autophagy's impact on bone health varies depending on factors such as regulation, cell type, environmental cues, and physiological context. Despite being traditionally considered a cytoplasmic process, autophagy is subject to transcriptional and epigenetic regulation within the nucleus. However, the precise influence of epigenetic regulation, including DNA methylation, histone modifications, and non-coding RNA expression, on cellular fate remains incompletely understood. The interplay between autophagy and epigenetic modifications adds complexity to bone cell regulation. This article provides an in-depth exploration of the intricate interplay between these two regulatory paradigms, with a focus on the epigenetic control of autophagy in bone metabolism. Such an understanding enhances our knowledge of bone metabolism-related disorders and offers insights for the development of targeted therapeutic strategies.
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Affiliation(s)
- Yazhou Zhang
- Department of Foot and Ankle Surgery, Tengzhou Central People’s Hospital, Tengzhou 277500, China
| | - Qianqian Wang
- Department of Pediatric Intensive Care Unit, Tengzhou Central People’s Hospital, Tengzhou 277500, China
| | - Hongjia Xue
- Department of Computer Science, University College London, London, WC1E 6BT, UK
| | - Yujin Guo
- Institute of Clinical Pharmacy & Pharmacology, Jining First People’s Hospital, Jining 272000, China
| | - Shanshan Wei
- Department of Pharmacy, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan 250000, China
- Department of Graduate, Shandong Academy of Medical Sciences, Shandong First Medical University, Jinan 250000, China
| | - Fengfeng Li
- Department of Neurosurgery, Tengzhou Central People’s Hospital, Tengzhou 277500, China
| | - Linqiang Gong
- Department of Gastroenterology, Tengzhou Central People's Hospital, Tengzhou 277500, China
| | - Weiliang Pan
- Department of Foot and Ankle Surgery, Tengzhou Central People’s Hospital, Tengzhou 277500, China
| | - Pei Jiang
- Translational Pharmaceutical Laboratory, Jining First People’s Hospital, Shandong First Medical University, Jining 272000, China
- Institute of Translational Pharmacy, Jining Medical Research Academy, Jining 272000, China
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Gao P, Pan X, Wang S, Guo S, Dong Z, Wang Z, Liang X, Chen Y, Fang F, Yang L, Huang J, Zhang C, Li C, Luo Y, Peng S, Xu F. Identification of the transcriptome signatures and immune-inflammatory responses in postmenopausal osteoporosis. Heliyon 2024; 10:e23675. [PMID: 38187229 PMCID: PMC10770509 DOI: 10.1016/j.heliyon.2023.e23675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Revised: 11/25/2023] [Accepted: 12/09/2023] [Indexed: 01/09/2024] Open
Abstract
Postmenopausal osteoporosis is the most common type of osteoporosis in women. To date, little is known about their transcriptome signatures, although biomarkers from peripheral blood mononuclear cells are attractive for postmenopausal osteoporosis diagnoses. Here, we performed bulk RNA sequencing of 206 samples (124 postmenopausal osteoporosis and 82 normal samples) and described the clinical phenotypic characteristics of postmenopausal women. We then highlighted the gene set enrichment analyses between the extreme T-score group and the heathy control group, revealing that some immune-inflammatory responses were enhanced in postmenopausal osteoporosis, with representative pathways including the mitogen-activated protein kinase (NES = 1.6, FDR <0.11) pathway and B_CELL_RECEPTOR (NES = 1.69, FDR <0.15) pathway. Finally, we developed a combined risk prediction model based on lasso-logistic regression to predict postmenopausal osteoporosis, which combined eleven genes (PTGS2, CXCL16, NECAP1, RPS23, SSR3, CD74, IL4R, BTBD2, PIGS, LILRA2, MAP3K11) and three pieces of clinical information (age, procollagen I N-terminal propeptide, β isomer of C-terminal telopeptide of type I) and provided the best prediction ability (AUC = 0.97). Taken together, this study filled a gap in the large-scale transcriptome signature profiles and revealed the close relationship between immune-inflammatory responses and postmenopausal osteoporosis, providing a unique perspective for understanding the occurrence and development of postmenopausal osteoporosis.
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Affiliation(s)
- Pan Gao
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- BGI Cell, Shenzhen 518083, China
- BGI Research, Shenzhen 518083, China
| | - Xiaoguang Pan
- Qingdao-Europe Advanced Institute for Life Sciences, BGI-Shenzhen, Qingdao 266555, China
| | - Shang Wang
- Department of Spine Surgery, Shenzhen People's Hospital, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Sijia Guo
- BGI Research, Shenzhen 518083, China
| | | | - Zhefeng Wang
- Department of Spine Surgery, Shenzhen People's Hospital, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Xue Liang
- Qingdao-Europe Advanced Institute for Life Sciences, BGI-Shenzhen, Qingdao 266555, China
| | - Yan Chen
- BGI Research, Shenzhen 518083, China
| | - Fang Fang
- BGI Research, Shenzhen 518083, China
| | - Ling Yang
- BGI Research, Shenzhen 518083, China
| | - Jinrong Huang
- BGI Research, Shenzhen 518083, China
- Lars Bolund Institute of Regenerative Medicine, BGI-Qingdao, BGI-Shenzhen, Qingdao 266555, China
| | | | - Conghui Li
- BGI Research, Shenzhen 518083, China
- Qingdao-Europe Advanced Institute for Life Sciences, BGI-Shenzhen, Qingdao 266555, China
- Lars Bolund Institute of Regenerative Medicine, BGI-Qingdao, BGI-Shenzhen, Qingdao 266555, China
| | - Yonglun Luo
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- BGI Research, Shenzhen 518083, China
- Qingdao-Europe Advanced Institute for Life Sciences, BGI-Shenzhen, Qingdao 266555, China
| | - Songlin Peng
- Department of Spine Surgery, Shenzhen People's Hospital, The First Affiliated Hospital, Southern University of Science and Technology, Shenzhen 518020, Guangdong, China
| | - Fengping Xu
- College of Life Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
- BGI Cell, Shenzhen 518083, China
- BGI Research, Shenzhen 518083, China
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Fang X, Ao X, Xiao D, Wang Y, Jia Y, Wang P, Li M, Wang J. Circular RNA-circPan3 attenuates cardiac hypertrophy via miR-320-3p/HSP20 axis. Cell Mol Biol Lett 2024; 29:3. [PMID: 38172650 PMCID: PMC10763352 DOI: 10.1186/s11658-023-00520-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 12/05/2023] [Indexed: 01/05/2024] Open
Abstract
BACKGROUND Circular RNAs are enriched in cardiac tissue and play important roles in the pathogenesis of heart diseases. In this study, we aimed to investigate the regulatory mechanism of a conserved heart-enriched circRNA, circPan3, in cardiac hypertrophy. METHODS Cardiac hypertrophy was induced by isoproterenol. The progression of cardiomyocyte hypertrophy was assessed by sarcomere organization staining, cell surface area measurement, and expression levels of cardiac hypertrophy markers. RNA interactions were detected by RNA pull-down assays, and methylated RNA immunoprecipitation was used to detect m6A level. RESULTS The expression of circPan3 was downregulated in an isoproterenol-induced cardiac hypertrophy model. Forced expression of circPan3 attenuated cardiomyocyte hypertrophy, while inhibition of circPan3 aggravated cardiomyocyte hypertrophy. Mechanistically, circPan3 was an endogenous sponge of miR-320-3p without affecting miR-320-3p levels. It elevated the expression of HSP20 by endogenously interacting with miR-320-3p. In addition, circPan3 was N6-methylated. Stimulation by isoproterenol downregulated the m6A eraser ALKBH5, resulting in N6-methylation and destabilization of circPan3. CONCLUSIONS Our research is the first to report that circPan3 has an antihypertrophic effect in cardiomyocytes and revealed a novel circPan3-modulated signalling pathway involved in cardiac hypertrophy. CircPan3 inhibits cardiac hypertrophy by targeting the miR-320-3p/HSP20 axis and is regulated by ALKBH5-mediated N6-methylation. This pathway could provide potential therapeutic targets for cardiac hypertrophy.
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Affiliation(s)
- Xinyu Fang
- School of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Xiang Ao
- School of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Dandan Xiao
- School of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Yu Wang
- School of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Yi Jia
- School of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Peiyan Wang
- School of Basic Medicine, Qingdao University, Qingdao, 266071, China
| | - Mengyang Li
- School of Basic Medicine, Qingdao University, Qingdao, 266071, China.
| | - Jianxun Wang
- School of Basic Medicine, Qingdao University, Qingdao, 266071, China.
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Li Z, Zhang B, Shang J, Wang Y, Jia L, She X, Xu X, Zhang D, Guo J, Zhang F. Diabetic and nondiabetic BMSC-derived exosomes affect bone regeneration via regulating miR-17-5p/SMAD7 axis. Int Immunopharmacol 2023; 125:111190. [PMID: 37976598 DOI: 10.1016/j.intimp.2023.111190] [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: 07/29/2023] [Revised: 11/03/2023] [Accepted: 11/03/2023] [Indexed: 11/19/2023]
Abstract
Diabetic bone disease (DBD) is a complication of diabetes mellitus (DM) and is characterized by impaired osteocyte function and delayed bone remodeling due to high blood glucose levels and sustained release of inflammatory factors. Recent studies show that the regulation of osteoblasts (OBs) by bone marrow stromal cells (BMSCs) is an important mechanism in alleviating DBD and that exosomes are recognized as the key medium. Mesenchymal stem cell-derived exosome (MSC-Exos) therapy is a promising approach to facilitate tissue repair. However, the influence of exosomes from diabetic conditioned BMSCs on OBs and bone regeneration, as well as the underlying mechanism, are still elusive. Here, we used high-glucose medium to mimic diabetic conditions and normal-glucose medium as control to mimic nondiabetic conditions in vitro and found that microRNA-17 (miR-17) was downregulated in diabetic-conditioned BMSC-derived exosomes (HG-Exos), HG-Exo-co-cultured osteoblasts, and the skull of rats with type 2 diabetes mellitus (T2DM). Further experiment concluded that nondiabetic conditioned BMSC-Exos (NG-Exos) promoted the osteogenesis of OBs and bone regeneration of rats with T2DM via upregulation of miR-17. Compare with NG-Exos, HG-Exos impeded osteogenesis of OBs in vitro and bone regeneration of rats in vivo by downregulation of miR-17. Moreover, miR-17 promoted bone regeneration by targeting SMAD7, which was further proved to have a negative effect on osteogenesis. Taken together, nondiabetic BMSC-derived exosomes greatly foster bone regeneration, whereas diabetic BMSC-derived exosomes undermine the promotion effect of MSC-Exos by regulating the miR-17/SMAD7 axis. These findings provide support for the miR-17-5p/SMAD7 axis as a promising therapeutic target to treat DBD.
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Affiliation(s)
- Zechuan Li
- Department of Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, No. 44-1 Wenhua Road West, 250012 Jinan, Shandong, China
| | - Bing Zhang
- Department of Health Care, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, No. 44-1 Wenhua Road West, 250012 Jinan, Shandong, China
| | - Jiaming Shang
- Department of Prosthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, No. 44-1 Wenhua Road West, 250012 Jinan, Shandong, China
| | - Yanan Wang
- Department of Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, No. 44-1 Wenhua Road West, 250012 Jinan, Shandong, China
| | - Linglu Jia
- Department of Prosthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, No. 44-1 Wenhua Road West, 250012 Jinan, Shandong, China
| | - Xiao She
- Department of Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, No. 44-1 Wenhua Road West, 250012 Jinan, Shandong, China
| | - Xin Xu
- Department of Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, No. 44-1 Wenhua Road West, 250012 Jinan, Shandong, China
| | - Dongjiao Zhang
- Department of Implantology, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, No. 44-1 Wenhua Road West, 250012 Jinan, Shandong, China
| | - Jing Guo
- Engineering Laboratory for Biomaterials and Tissue Regeneration, Ningbo Stomatology Hospital, No. 435 Xinxing Road, Ningbo 315042, Zhejiang, China; Savaid Stomatology School of Hangzhou Medical College, No. 1 Pinghai Road, Hangzhou 310051, Zhejiang, China
| | - Fan Zhang
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University & Shandong Key Laboratory of Oral Tissue Regeneration & Shandong Engineering Research Center of Dental Materials and Oral Tissue Regeneration & Shandong Provincial Clinical Research Center for Oral Diseases, No. 44-1 Wenhua Road West, 250012 Jinan, Shandong, China.
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Li Y, Wang X, Pan C, Yuan H, Li X, Chen Z, He H. Myoblast-derived exosomal Prrx2 attenuates osteoporosis via transcriptional regulation of lncRNA-MIR22HG to activate Hippo pathway. Mol Med 2023; 29:54. [PMID: 37081396 PMCID: PMC10116833 DOI: 10.1186/s10020-023-00649-y] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2022] [Accepted: 04/04/2023] [Indexed: 04/22/2023] Open
Abstract
BACKGROUND Sarcopenia and osteoporosis are common diseases that predominantly affect older individuals. The interaction between muscle and skeleton exerts pivotal roles in bone remodeling. This study aimed to explore the function of myoblast-derived exosomal Prrx2 in osteogenic differentiation and its potential mechanisms. METHODS Exosomes were isolated from myogenic differentiated C2C12 cells. qRT-PCR and Western blotting were used to determine target molecule expression. Osteogenic differentiation of BMSCs was evaluated by Alizarin red staining, ALP activity and levels of OCN, OPN, RUNX2, and BMP2. Dual-luciferase reporter assay, RIP, and ChIP assays were performed to verify the interaction between molecules. The nuclear translocation of YAP1 was observed by immunofluorescence staining. In vivo osteoporotic model was established by ovariectomy in mice. Bone loss was examined using HE staining. RESULTS Prrx2 expression was elevated in myogenic differentiated C2C12 cells and their exosomes. Myoblast-derived exosomal Prrx2 enhanced osteogenic differentiation of BMSCs. Delivering exosomal Prrx2 directly bond to MIR22HG promoter and promoted its transcription and expression. MIR22HG enhanced expression and nuclear translocation of YAP via sponging miR-128, thus facilitating BMSC osteogenic differentiation. Knockdown of exosomal Prrx2 suppressed osteogenic differentiation, which could be abolished by MIR22HG overexpression. Similarly, miR-128 inhibitor or YAP overexpression reversed the inhibitory effect of MIR22HG depletion or miR-128 mimics on osteogenic differentiation. Finally, myoblast-derived exosomal Prrx2 alleviated osteoporosis in mice via up-regulating MIR22HG and activating the Hippo pathway. CONCLUSION Myoblast-derived exosomal Prrx2 contributes to transcriptional activation of MIR22HG to activate YAP pathway via sponging miR-128, thereby facilitating osteogenic differentiation of BMSCs.
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Affiliation(s)
- Yunchao Li
- Department of Spine Surgery, The Second Xiangya Hospital of Central South University, No. 139, RenMin Middle Road, Changsha, 410001, Hunan Province, P.R. China.
| | - Xiaoxiao Wang
- Department of Spine Surgery, The Second Xiangya Hospital of Central South University, No. 139, RenMin Middle Road, Changsha, 410001, Hunan Province, P.R. China
| | - Changyu Pan
- Department of Spine Surgery, The Second Xiangya Hospital of Central South University, No. 139, RenMin Middle Road, Changsha, 410001, Hunan Province, P.R. China
| | - Hui Yuan
- Department of Spine Surgery, The Second Xiangya Hospital of Central South University, No. 139, RenMin Middle Road, Changsha, 410001, Hunan Province, P.R. China
| | - Xinyi Li
- Department of Spine Surgery, The Second Xiangya Hospital of Central South University, No. 139, RenMin Middle Road, Changsha, 410001, Hunan Province, P.R. China
| | - Zejun Chen
- Department of Spine Surgery, The Second Xiangya Hospital of Central South University, No. 139, RenMin Middle Road, Changsha, 410001, Hunan Province, P.R. China
| | - Haoyu He
- Department of Spine Surgery, The Second Xiangya Hospital of Central South University, No. 139, RenMin Middle Road, Changsha, 410001, Hunan Province, P.R. China
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Xu L, Zhang X, Li G, Zhang L, Zhang S, Shi F, Hu Z. Inhibition of SIRT1 by miR-138-5p provides a mechanism for inhibiting osteoblast proliferation and promoting apoptosis under simulated microgravity. LIFE SCIENCES IN SPACE RESEARCH 2023; 36:59-69. [PMID: 36682830 DOI: 10.1016/j.lssr.2022.08.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 08/01/2022] [Accepted: 08/02/2022] [Indexed: 06/17/2023]
Abstract
Microgravity can inhibit osteoblast proliferation and promote apoptosis, which is related to a reduction in mechanical stress on the bones and results in disuse osteoporosis, but the detailed mechanism is still unclear. In this study, we first demonstrated that miR-138-5p was upregulated, inhibited osteoblast proliferation and induced osteoblast apoptosis under simulated microgravity. Moreover, miR-138-5p silencing partially mitigated the effects of proliferation and apoptosis of MC3T3-E1 cells. Our study further showed that sirtuin 1 (SIRT1) was downregulated and negatively correlated with the expression of miR-138-5p under simulated microgravity, which indicated that miR-138-5p inhibited osteoblast proliferation and promoted osteoblast apoptosis by targeting SIRT1. Thus, the miR-138-5p/SIRT1 pathway should be considered for preventative treatment of disuse osteoporosis.
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Affiliation(s)
- Liqun Xu
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032, Xi'an, Shaanxi, China
| | - Xiaoyan Zhang
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032, Xi'an, Shaanxi, China
| | - Gaozhi Li
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032, Xi'an, Shaanxi, China
| | - Lijun Zhang
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032, Xi'an, Shaanxi, China
| | - Shu Zhang
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032, Xi'an, Shaanxi, China
| | - Fei Shi
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032, Xi'an, Shaanxi, China
| | - Zebing Hu
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032, Xi'an, Shaanxi, China.
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Zhang L, Xu L, Wang Y, Zhang X, Xue T, Sun Q, Tang H, Li M, Cao X, Shi F, Zhang G, Zhang S, Hu Z. Histone methyltransferase Setdb1 mediates osteogenic differentiation by suppressing the expression of miR-212-3p under mechanical unloading. Cell Signal 2023; 102:110554. [PMID: 36476391 DOI: 10.1016/j.cellsig.2022.110554] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 11/14/2022] [Accepted: 12/01/2022] [Indexed: 12/12/2022]
Abstract
Emerging evidence indicates that multiple mechanisms are involved in bone loss induced by mechanical unloading. Thus far, few study has established the pathophysiological role of histone modification for osteogenic differentiation under mechanical unloading. Here we demonstrated that the histone H3 lysine 9 (H3K9) methyltransferase Setdb1, which was sensitive to mechanical unloading, was increased during osteogenic differentiation of MC3T3-E1 cells for the first time. Knockdown of Setdb1 significantly blocked osteoblast function in vivo and in vitro. Through bioinformatics analysis of candidate miRNAs regulated by H3K9me3, we further identified that Setdb1 inhibited the expression of miR-212-3p by regulating the formation of H3K9me3 in the promoter region. Mechanically, we revealed that miR-212-3p was upregulated under mechanical unloading and suppressed osteogenic differentiation by directly downregulating High mobility group box 1 protein (Hmgb1) expression. Furthermore, we verified the molecular mechanism of the SETDB1/miR-212-3p/HMGB1 pathway in hFOB cells under mechanical unloading. In summary, these data demonstrate the essential function of the Setdb1/miR-212-3p/Hmgb1 pathway in osteogenic differentiation under mechanical unloading, and present a potential protective strategies against bone loss induced by mechanical unloading.
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Affiliation(s)
- Lijun Zhang
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China
| | - Liqun Xu
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China
| | - Yixuan Wang
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China; Department of Gastroenterology, the 940th Hospital of Joint Logistics Support Force of Chinese PLA, 730050, Lanzhou, China
| | - Xiaoyan Zhang
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China
| | - Tong Xue
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China
| | - Quan Sun
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China
| | - Hao Tang
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China
| | - Meng Li
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China; The Medical College of Yan'an University, 716000 Yan'an, Shaanxi, China
| | - Xinsheng Cao
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China
| | - Fei Shi
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China
| | - Ge Zhang
- Institute for Advancing Translational Medicine in Bone & Joint Diseases, School of Chinese Medicine, Hong Kong Baptist University, 999077, Hong Kong, China
| | - Shu Zhang
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China.
| | - Zebing Hu
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, 710032 Xi'an, Shaanxi, China.
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9
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Lin Y, Dai H, Yu G, Song C, Liu J, Xu J. Inhibiting KCNMA1-AS1 promotes osteogenic differentiation of HBMSCs via miR-1303/cochlin axis. J Orthop Surg Res 2023; 18:73. [PMID: 36717952 PMCID: PMC9885668 DOI: 10.1186/s13018-023-03538-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2022] [Accepted: 01/13/2023] [Indexed: 01/31/2023] Open
Abstract
OBJECTIVE Osteoporosis is a progressive systemic skeletal disorder. Multiple profiling studies have contributed to characterizing biomarkers and therapeutic targets for osteoporosis. However, due to the limitation of the platform of miRNA sequencing, only a part of miRNA can be sequenced based on one platform. MATERIALS AND METHODS In this study, we performed miRNA sequencing in osteoporosis bone samples based on a novel platform Illumina Hiseq 2500. Bioinformatics analysis was performed to construct osteoporosis-related competing endogenous RNA (ceRNA) networks. Gene interference and osteogenic induction were used to examine the effect of identified ceRNA networks on osteogenic differentiation of human bone marrow-derived mesenchymal stem cells (HBMSCs). RESULTS miR-1303 was lowly expressed, while cochlin (COCH) and KCNMA1-AS1 were highly expressed in the osteoporosis subjects. COCH knockdown improved the osteogenic differentiation of HBMSCs. Meanwhile, COCH inhibition compensated for the suppression of osteogenic differentiation of HBMSCs by miR-1303 knockdown. Further, KCNMA1-AS1 knockdown promoted osteogenic differentiation of HBMSCs through downregulating COCH by sponging miR-1303. CONCLUSIONS Our findings suggest that the KCNMA1-AS1/miR-1303/COCH axis is a promising biomarker and therapeutic target for osteoporosis.
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Affiliation(s)
- Yuan Lin
- grid.415108.90000 0004 1757 9178Department of Orthopedics, Fujian Provincial Hospital, Fuzhou, China ,grid.256112.30000 0004 1797 9307Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Hanhao Dai
- grid.256112.30000 0004 1797 9307Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Guoyu Yu
- grid.415108.90000 0004 1757 9178Department of Orthopedics, Fujian Provincial Hospital, Fuzhou, China ,grid.265021.20000 0000 9792 1228Clinical College of Orthopedics, Tianjin Medical University, Tianjin, China
| | - Chao Song
- grid.256112.30000 0004 1797 9307Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
| | - Jun Liu
- grid.265021.20000 0000 9792 1228Clinical College of Orthopedics, Tianjin Medical University, Tianjin, China ,grid.33763.320000 0004 1761 2484Department of Joints, Tianjin Hospital, Tianjin University, Tianjin, China
| | - Jie Xu
- grid.415108.90000 0004 1757 9178Department of Orthopedics, Fujian Provincial Hospital, Fuzhou, China ,grid.256112.30000 0004 1797 9307Shengli Clinical Medical College of Fujian Medical University, Fuzhou, China
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10
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Zhang X, Zhang L, Xu L, Li G, Wang K, Xue T, Sun Q, Tang H, Cao X, Hu Z, Zhang S, Shi F. Exosomes from Microvascular Endothelial Cells under Mechanical Unloading Inhibit Osteogenic Differentiation via miR-92b-3p/ELK4 Axis. J Pers Med 2022; 12:jpm12122030. [PMID: 36556251 PMCID: PMC9785449 DOI: 10.3390/jpm12122030] [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: 10/28/2022] [Revised: 11/30/2022] [Accepted: 12/06/2022] [Indexed: 12/14/2022] Open
Abstract
Mechanical unloading-related bone loss adversely harms astronauts' health. Nevertheless, the specific molecular basis underlying the phenomenon has not been completely elucidated. Although the bone microvasculature contributes significantly to bone homeostasis, the pathophysiological role of microvascular endothelial cells (MVECs) in bone loss induced by mechanical unloading is not apparent. Here, we discovered that MC3T3-E1 cells could take up exosomes produced by MVECs under clinorotation-unloading conditions (Clino Exos), which then prevented MC3T3-E1 cells from differentiating into mature osteoblasts. Moreover, miR-92b-3p was found to be highly expressed in both unloaded MVECs and derived exosomes. Further experiments demonstrated that miR-92b-3p was transferred into MC3T3-E1 cells by exosomes, resulting in the suppression of osteogenic differentiation, and that encapsulating miR-92b-3p inhibitor into the Clino Exos blocked their inhibitory effects. Furthermore, miR-92b-3p targeted ELK4 and the expression of ELK4 was lessened when cocultured with Clino Exos. The inhibitor-92b-3p-promoted osteoblast differentiation was partially reduced by siRNA-ELK4. Exosomal miR-92b-3p secreted from MVECs under mechanical unloading has been shown for the first time to partially attenuate the function of osteoblasts through downregulation of ELK4, suggesting a potential strategy to protect against the mechanical unloading-induced bone loss and disuse osteoporosis.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Shu Zhang
- Correspondence: (S.Z.); (F.S.); Tel.: +86-29-8471-1231 (S.Z.)
| | - Fei Shi
- Correspondence: (S.Z.); (F.S.); Tel.: +86-29-8471-1231 (S.Z.)
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11
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Zhang X, Xue T, Hu Z, Guo X, Li G, Wang Y, Zhang L, Xu L, Cao X, Zhang S, Shi F, Wang K. Bioinformatic analysis of the RNA expression patterns in microgravity-induced bone loss. Front Genet 2022; 13:985025. [PMID: 36425065 PMCID: PMC9681495 DOI: 10.3389/fgene.2022.985025] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2022] [Accepted: 10/24/2022] [Indexed: 08/27/2023] Open
Abstract
Researchers have linked microgravity in space to the significant imbalance between bone formation and bone resorption that induces persistent bone loss in load-bearing bones. However, the underlying molecular mechanisms are still unclear, which hinders the development of therapeutic measures. The aim of this study was to identify hub genes and explore novel molecular mechanisms underlying microgravity-induced bone loss using transcriptome datasets obtained from the GEO and SRA databases. In summary, comparative RNA expression pattern studies that differ in species (Homo or Mus), models (in vitro or in vivo), microgravity conditions (real microgravity or ground-based simulators) and microgravity duration showed that it is difficult to reach a consistent conclusion about the pathogenesis of microgravity-induced bone loss across these studies. Even so, we identified 11 hub genes and some miRNA-mRNA interactions mainly based on the GSE100930 dataset. Also, the expression of CCL2, ICAM1, IGF1, miR-101-3p and miR-451a markedly changed under clinorotation-microgravity condition. Remarkedly, ICAM1 and miR-451a were key mediators of the osteogenesis of hMSCs under clinorotation-microgravity condition. These findings provide novel insights into the molecular mechanisms of bone loss during microgravity and could indicate potential targets for further countermeasures against this condition.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Fei Shi
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, Xi’an, China
| | - Ke Wang
- The Key Laboratory of Aerospace Medicine, Ministry of Education, Air Force Medical University, Xi’an, China
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12
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Methyltransferase Setdb1 Promotes Osteoblast Proliferation by Epigenetically Silencing Macrod2 with the Assistance of Atf7ip. Cells 2022; 11:cells11162580. [PMID: 36010655 PMCID: PMC9406310 DOI: 10.3390/cells11162580] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/31/2022] [Accepted: 08/09/2022] [Indexed: 12/03/2022] Open
Abstract
Bone loss caused by mechanical unloading is a threat to prolonged space flight and human health. Epigenetic modifications play a crucial role in varied biological processes, but the mechanism of histone modification on unloading-induced bone loss has rarely been studied. Here, we discovered for the first time that the methyltransferase Setdb1 was downregulated under the mechanical unloading both in vitro and in vivo so as to attenuate osteoblast proliferation. Furthermore, we found these interesting processes depended on the repression of Macrod2 expression triggered by Setdb1 catalyzing the formation of H3K9me3 in the promoter region. Mechanically, we revealed that Macrod2 was upregulated under mechanical unloading and suppressed osteoblast proliferation through the GSK-3β/β-catenin signaling pathway. Moreover, Atf7ip cooperatively contributed to osteoblast proliferation by changing the localization of Setdb1 under mechanical loading. In summary, this research elucidated the role of the Atf7ip/Setdb1/Macrod2 axis in osteoblast proliferation under mechanical unloading for the first time, which can be a potential protective strategy against unloading-induced bone loss.
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13
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Cai J, Li C, Li S, Yi J, Wang J, Yao K, Gan X, Shen Y, Yang P, Jing D, Zhao Z. A Quartet Network Analysis Identifying Mechanically Responsive Long Noncoding RNAs in Bone Remodeling. Front Bioeng Biotechnol 2022; 10:780211. [PMID: 35356768 PMCID: PMC8959777 DOI: 10.3389/fbioe.2022.780211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Accepted: 01/20/2022] [Indexed: 12/13/2022] Open
Abstract
Mechanical force, being so ubiquitous that it is often taken for granted and overlooked, is now gaining the spotlight for reams of evidence corroborating their crucial roles in the living body. The bone, particularly, experiences manifold extraneous force like strain and compression, as well as intrinsic cues like fluid shear stress and physical properties of the microenvironment. Though sparkled in diversified background, long noncoding RNAs (lncRNAs) concerning the mechanotransduction process that bone undergoes are not yet detailed in a systematic way. Our principal goal in this research is to highlight the potential lncRNA-focused mechanical signaling systems which may be adapted by bone-related cells for biophysical environment response. Based on credible lists of force-sensitive mRNAs and miRNAs, we constructed a force-responsive competing endogenous RNA network for lncRNA identification. To elucidate the underlying mechanism, we then illustrated the possible crosstalk between lncRNAs and mRNAs as well as transcriptional factors and mapped lncRNAs to known signaling pathways involved in bone remodeling and mechanotransduction. Last, we developed combinative analysis between predicted and established lncRNAs, constructing a pathway–lncRNA network which suggests interactive relationships and new roles of known factors such as H19. In conclusion, our work provided a systematic quartet network analysis, uncovered candidate force-related lncRNAs, and highlighted both the upstream and downstream processes that are possibly involved. A new mode of bioinformatic analysis integrating sequencing data, literature retrieval, and computational algorithm was also introduced. Hopefully, our work would provide a moment of clarity against the multiplicity and complexity of the lncRNA world confronting mechanical input.
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Affiliation(s)
- Jingyi Cai
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Chaoyuan Li
- Department of Oral Implantology, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, School and Hospital of Stomatology, Tongji University, Shanghai, China
| | - Shun Li
- Institute of Engineering Medicine, Beijing Institute of Technology, Beijing, China
| | - Jianru Yi
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jun Wang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Ke Yao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Xinyan Gan
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Yu Shen
- School of Basic Medical Sciences, Chengdu University, Chengdu, China
| | - Pu Yang
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Dian Jing
- Department of Orthodontics, China Shanghai Ninth People’s Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, China
- National Center for Stomatology, National Clinical Research Center for Oral Diseases, Shanghai Key Laboratory of Stomatology, Shanghai Jiao Tong University, Shanghai, China
- *Correspondence: Dian Jing, ; Zhihe Zhao,
| | - Zhihe Zhao
- State Key Laboratory of Oral Diseases and National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
- *Correspondence: Dian Jing, ; Zhihe Zhao,
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14
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Sun Q, Liang R, Li M, Zhou H. Circ_UTRN ameliorates caerulein-induced acute pancreatitis in vitro via reducing inflammation and promoting apoptosis through miR-320-3p/PTK2 axis. J Pharm Pharmacol 2021; 74:861-868. [PMID: 34850057 DOI: 10.1093/jpp/rgab161] [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: 03/04/2021] [Accepted: 11/01/2021] [Indexed: 02/07/2023]
Abstract
OBJECTIVES Circular RNAs (circRNAs) have been demonstrated to play important roles in acute pancreatitis (AP). Herein, this study aimed to investigate the role and mechanism of circRNAs utrophin (circ_UTRN) in AP. METHODS In vitro cultured rat pancreatic acinar cell line AR42J was exposed to caerulein (10 nmol/L) to mimic an AP cell model. The levels of circ_UTRN and microRNA (miR)-320-3p and protein tyrosine kinase 2 (PTK2) were examined using quantitative real-time polymerase chain reaction and Western blot assays. Cell apoptosis was analysed by flow cytometry and Western blot assays. ELISA was employed to detect the levels of tumour necrosis factor-α (TNF-α), IL-1β and IL-6. The binding interaction between miR-320-3p and circ_UTRN or PTK2 was verified using dual-luciferase reporter assay. KEY FINDINGS The expression of circ_UTRN was decreased by caerulein in pancreatic acinar cells, ectopic overexpression of circ_UTRN reduced inflammation and promoted apoptosis in caerulein-mediated pancreatic acinar cells. In a mechanical study, circ_UTRN served as a sponge of miR-320-3p, and miR-320-3p directly targeted PTK2. Rescue assay suggested that the promotion of apoptosis and inhibition of inflammation induced by circ_UTRN re-expression in caerulein-mediated pancreatic acinar cells were partially abolished by miR-320-3p overexpression or PTK2 knockdown. Besides that, miR-320-3p inhibition impaired caerulein-induced cell apoptosis arrest and inflammation via targeting PTK2. CONCLUSIONS Up-regulation of circ_UTRN in pancreatic acinar cells attenuates caerulein-evoked cell apoptosis arrest and inflammation enhancement via miR-320-3p/PTK2, suggesting that circ_UTRN/miR-320-3p/PTK2 axis might be engaged in caerulein-induced AP.
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Affiliation(s)
- Qiang Sun
- Department of Gastroenterology, Shangdong Province Third Hospital, Jinan City, Shandong Province, China
| | - Ran Liang
- Nancun Community Health Service Center of Shandong Provincial Third Hospital, Jinan, Shandong, China
| | - Mingdong Li
- Department of Gastroenterology, West Hospital District of Zibo Central Hospital, Zibo, Shandong, China
| | - Hua Zhou
- Department of Gastroenterology, West Hospital District of Zibo Central Hospital, Zibo, Shandong, China
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15
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Yu H, Li Y, Tang J, Lu X, Hu W, Cheng L. Long non-coding RNA RP11-84C13.1 promotes osteogenic differentiation of bone mesenchymal stem cells and alleviates osteoporosis progression via the miR-23b-3p/RUNX2 axis. Exp Ther Med 2021; 22:1340. [PMID: 34630694 PMCID: PMC8495569 DOI: 10.3892/etm.2021.10775] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2020] [Accepted: 08/17/2021] [Indexed: 12/16/2022] Open
Abstract
The objective of the present study was to determine the role of RP11-84C13.1 in osteoporosis (OP) and its molecular mechanism. First, clinical samples were collected from OP patients and normal control patients. Human bone marrow stromal cells (hBMSCs) were extracted from femoral head tissues. Runt-related transcription factor 2 (RUNX2) and RP11-84C13.1 serum levels were assessed by reverse transcription-quantitative (RT-q)PCR. Following transfection of pcDNA-RP11-84C13.1, si-RP11-84C13.1, microRNA (miRNA)-23b-3p mimic and miRNA-23b-3p inhibitor, the expression levels of RUNX2 and RP11-84C13.1 were determined by RT-qPCR. In addition, the osteogenic ability of hBMSCs was assessed by Alizarin Red staining. The binding of RP11-84C13.1 to miRNA-23b-3p and the binding of miRNA-23b-3p to RUNX2 was confirmed by dual-luciferase reporter gene assay. Long non-coding RNA (lncRNA) RP11-84C13.1 was significantly downregulated in the serum of OP patients. The osteogenic differentiation-related genes RUNX2 and RP11-84C13.1 were markedly upregulated in a time-dependent manner, while the miRNA-23b-3p level gradually decreased in hBMSCs with the prolongation of osteogenesis. RP11-84C13.1 knockdown inhibited the osteogenic differentiation of hBMSCs. Furthermore, RP11-84C13.1 regulated RUNX2 expression by targeting miRNA-23b-3p. Overexpression of miRNA-23b-3p partially reversed the promoting effect of RP11-84C13.1 on the osteogenesis of hBMSCs. In conclusion, lncRNA RP11-84C13.1 upregulated RUNX2 by absorbing miRNA-23b-3p, and thus induced hBMSC osteogenesis to alleviate osteoporosis.
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Affiliation(s)
- Huaixi Yu
- Department of Orthopaedic Surgery, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223000, P.R. China
| | - Yunyun Li
- Department of Information Statistics Center, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223000, P.R. China
| | - Jinshan Tang
- Department of Orthopaedic Surgery, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223000, P.R. China
| | - Xiaoqing Lu
- Department of Orthopaedic Surgery, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223000, P.R. China
| | - Wen Hu
- Department of Endocrinology, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223000, P.R. China
| | - Liang Cheng
- Department of Endocrinology, Huai'an Second People's Hospital, The Affiliated Huai'an Hospital of Xuzhou Medical University, Huai'an, Jiangsu 223000, P.R. China
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16
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Biophysical Modulation of the Mitochondrial Metabolism and Redox in Bone Homeostasis and Osteoporosis: How Biophysics Converts into Bioenergetics. Antioxidants (Basel) 2021; 10:antiox10091394. [PMID: 34573026 PMCID: PMC8466850 DOI: 10.3390/antiox10091394] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2021] [Revised: 08/25/2021] [Accepted: 08/25/2021] [Indexed: 01/11/2023] Open
Abstract
Bone-forming cells build mineralized microstructure and couple with bone-resorbing cells, harmonizing bone mineral acquisition, and remodeling to maintain bone mass homeostasis. Mitochondrial glycolysis and oxidative phosphorylation pathways together with ROS generation meet the energy requirement for bone-forming cell growth and differentiation, respectively. Moderate mechanical stimulations, such as weight loading, physical activity, ultrasound, vibration, and electromagnetic field stimulation, etc., are advantageous to bone-forming cell activity, promoting bone anabolism to compromise osteoporosis development. A plethora of molecules, including ion channels, integrins, focal adhesion kinases, and myokines, are mechanosensitive and transduce mechanical stimuli into intercellular signaling, regulating growth, mineralized extracellular matrix biosynthesis, and resorption. Mechanical stimulation changes mitochondrial respiration, biogenesis, dynamics, calcium influx, and redox, whereas mechanical disuse induces mitochondrial dysfunction and oxidative stress, which aggravates bone-forming cell apoptosis, senescence, and dysfunction. The control of the mitochondrial biogenesis activator PGC-1α by NAD+-dependent deacetylase sirtuins or myokine FNDC/irisin or repression of oxidative stress by mitochondrial antioxidant Nrf2 modulates the biophysical stimulation for the promotion of bone integrity. This review sheds light onto the roles of mechanosensitive signaling, mitochondrial dynamics, and antioxidants in mediating the anabolic effects of biophysical stimulation to bone tissue and highlights the remedial potential of mitochondrial biogenesis regulators for osteoporosis.
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Fu S, Zheng Y, Sun Y, Lai M, Qiu J, Gui F, Zeng Q, Liu F. Suppressing long noncoding RNA OGRU ameliorates diabetic retinopathy by inhibition of oxidative stress and inflammation via miR-320/USP14 axis. Free Radic Biol Med 2021; 169:361-381. [PMID: 33762162 DOI: 10.1016/j.freeradbiomed.2021.03.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 03/13/2021] [Accepted: 03/15/2021] [Indexed: 02/07/2023]
Abstract
Long noncoding RNAs (lncRNAs) are important regulators in various diseases including diabetic retinopathy (DR). In this study, DR patients exhibited significantly increased expression of serum LncRNA-OGRU compared with normal individuals. Streptozotocin (STZ)-challenged rats with DR also had higher OGRU expression in retinas than that of the control group, which was confirmed in Müller cells upon high glucose (HG) stimulation. OGRU knockdown remarkably decreased vascular endothelial growth factor (VEGF) and transforming growth factor-β1 (TGF-β1) expression in HG-incubated Müller cells. HG-induced inflammatory response and oxidative stress in vitro were markedly mitigated by OGRU knockdown through restraining IκBɑ/nuclear factor kappa beta (NF-κB) and improving nuclear factor erythroid 2-related factor 2 (Nrf2) signaling pathways, respectively. Further studies indicated that OGRU suppression greatly restored miR-320 expression, and a negative correlation between them was detected in DR patients. We also found that miR-320 over-expression considerably restrained TGF-β1 signaling, and hindered inflammation and reactive oxygen species (ROS) production in HG-stimulated Müller cells. Additionally, OGRU knockdown or miR-320 over-expression could dramatically down-regulate ubiquitin-specific peptidase 14 (USP14) expression levels in HG-incubated Müller cells, and miR-320 could directly target USP14. Notably, OGRU/miR-320 axis-mediated TGF-β1 signaling, inflammation and ROS were largely dependent on USP14. Intriguingly, our results showed that USP14 directly interacted with transforming growth factor-beta type 1 receptor (TβR1), and impeded TβR1 ubiquitination and degradation. Furthermore, USP14 could also facilitate IκBɑ deubiquitination and degradation, exacerbating IκBɑ phosphorylation and NF-κB activation. Finally, our in vivo studies confirmed that OGRU knockdown considerably ameliorated DR progression in STZ-challenged rats through mediating the mechanisms observed in vitro. Collectively, these findings implicated that LncRNA-OGRU mediated DR progression through competing for miR-320 to regulate USP14 expression, and thus LncRNA-OGRU/miR-320/USP14 axis may be considered as a therapeutic target for DR treatment.
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Affiliation(s)
- Shuhua Fu
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Minde Road, Nanchang, 330006, PR China.
| | - Yunyao Zheng
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Minde Road, Nanchang, 330006, PR China
| | - Yawen Sun
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Minde Road, Nanchang, 330006, PR China
| | - Meichen Lai
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Minde Road, Nanchang, 330006, PR China
| | - Jingjing Qiu
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Minde Road, Nanchang, 330006, PR China
| | - Fu Gui
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Minde Road, Nanchang, 330006, PR China
| | - Qinqin Zeng
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Minde Road, Nanchang, 330006, PR China
| | - Fei Liu
- Department of Ophthalmology, The Second Affiliated Hospital of Nanchang University, Minde Road, Nanchang, 330006, PR China
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18
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Aurilia C, Donati S, Palmini G, Miglietta F, Iantomasi T, Brandi ML. The Involvement of Long Non-Coding RNAs in Bone. Int J Mol Sci 2021; 22:ijms22083909. [PMID: 33920083 PMCID: PMC8069547 DOI: 10.3390/ijms22083909] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/02/2021] [Accepted: 04/08/2021] [Indexed: 12/18/2022] Open
Abstract
A harmonious balance between osteoblast and osteoclast activity guarantees optimal bone formation and resorption, pathological conditions affecting the bone may arise. In recent years, emerging evidence has shown that epigenetic mechanisms play an important role during osteoblastogenesis and osteoclastogenesis processes, including long non-coding RNAs (lncRNAs). These molecules are a class of ncRNAs with lengths exceeding 200 nucleotides not translated into protein, that have attracted the attention of the scientific community as potential biomarkers to use for the future development of novel diagnostic and therapeutic approaches for several pathologies, including bone diseases. This review aims to provide an overview of the lncRNAs and their possible molecular mechanisms in the osteoblastogenesis and osteoclastogenesis processes. The deregulation of their expression profiles in common diseases associated with an altered bone turnover is also described. In perspective, lncRNAs could be considered potential innovative molecular biomarkers to help with earlier diagnosis of bone metabolism-related disorders and for the development of new therapeutic strategies.
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Affiliation(s)
- Cinzia Aurilia
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy; (C.A.); (S.D.); (G.P.); (F.M.); (T.I.)
| | - Simone Donati
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy; (C.A.); (S.D.); (G.P.); (F.M.); (T.I.)
| | - Gaia Palmini
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy; (C.A.); (S.D.); (G.P.); (F.M.); (T.I.)
| | - Francesca Miglietta
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy; (C.A.); (S.D.); (G.P.); (F.M.); (T.I.)
| | - Teresa Iantomasi
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy; (C.A.); (S.D.); (G.P.); (F.M.); (T.I.)
| | - Maria Luisa Brandi
- Department of Experimental and Clinical Biomedical Sciences, University of Florence, 50134 Florence, Italy; (C.A.); (S.D.); (G.P.); (F.M.); (T.I.)
- Fondazione Italiana Ricerca sulle Malattie dell’Osso (FIRMO Onlus), 50141 Florence, Italy
- Correspondence:
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19
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Li R, Dong Y, Li F. ETS Proto-Oncogene 1 Suppresses MicroRNA-128 Transcription to Promote Osteogenic Differentiation Through the HOXA13/β-Catenin Axis. Front Physiol 2021; 12:626248. [PMID: 33746773 PMCID: PMC7965964 DOI: 10.3389/fphys.2021.626248] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 02/09/2021] [Indexed: 12/23/2022] Open
Abstract
ETS proto-oncogene 1 (ETS1) has been implicated in osteoporosis (OP), but the exact molecular mechanisms are complex. This work focuses on the impact of ETS1 on the osteogenic differentiation and the molecules involved. A mouse pre-osteoblast cell line MC3T3-E1 was used for in vitro experiments. ETS1 was upregulated during the process of osteogenic differentiation of MC3T3-E1 cells. Overexpression of ETS1 promoted expression of osteogenic markers, alkaline phosphate concentration, and calcareous accumulation in cells. ETS1 was found to specifically bind to miR-128 promoter to suppress its transcription, while miR-128 could target homeobox A13 (HOXA13). Therefore, ETS1 suppressed miR-128 transcription to upregulate HOXA13 expression. Overexpression of HOXA13 promoted the osteogenic differentiation ability of cells and increased the protein level of β-catenin. Either overexpression of miR-128 or downregulation of β-catenin by CWP232228, a β-catenin-specific antagonist, blocked the promoting roles of ETS1 in cells. To conclude, this study provided evidence that ETS1 suppresses miR-128 transcription to activate the following HOXA13/β-catenin axis, therefore promoting osteogenic differentiation ability of MC3T3-E1 cells. This finding may offer novel ideas for OP treatment.
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Affiliation(s)
- Renyao Li
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Ying Dong
- School of Biological Science and Medical Engineering, Beihang University, Beijing, China
| | - Feipeng Li
- Naton Biotech (Beijing) Co., Ltd., Beijing, China
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Wang Y, Chen W, Zhao L, Li Y, Liu Z, Gao H, Bai X, Wang B. Obesity regulates miR-467/HoxA10 axis on osteogenic differentiation and fracture healing by BMSC-derived exosome LncRNA H19. J Cell Mol Med 2021; 25:1712-1724. [PMID: 33471953 PMCID: PMC7875915 DOI: 10.1111/jcmm.16273] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2020] [Revised: 12/21/2020] [Accepted: 12/26/2020] [Indexed: 12/14/2022] Open
Abstract
This study explored the therapeutic effect of bone marrow mesenchymal stem cell‐derived exosomes on the treatment of obesity‐induced fracture healing. Quantitative real‐time PCR was used to detect the expression of lncRNA H19, miR‐467 and Hoxa10 and combined with WB detection to detect osteogenic markers (RUNX2, OPN, OCN). Determine whether exosomes have entered BMSCs by immunofluorescence staining. Alkaline phosphatase (ALP) and alizarin red staining (ARS) staining were used to detect ALP activity and calcium deposition. We found that high‐fat treatment can inhibit the secretion of BMSCs‐derived exosomes and affect the expression of H19 carried by them. In vivo and in vitro experiments show that high‐fat or obesity factors can inhibit the expression of osteogenic markers and reduce the staining activity of ALP and ARS. The treatment of exosomes from normal sources can reverse the phenomenon of osteogenic differentiation and abnormal fracture healing. Further bioinformatics analysis found that miR‐467 as a regulatory molecule of lncRNA H19 and Hoxa10, and we verified the targeting relationship of the three through dual luciferase report experiments. Further, we found similar phenomena in ALP and ARS staining. Bone marrow mesenchymal stem cell‐derived exosomes improve fracture healing caused by obesity.
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Affiliation(s)
- Yijun Wang
- Departmen of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Wentao Chen
- Departmen of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Liang Zhao
- Departmen of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Yadong Li
- Departmen of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Zhenyu Liu
- Departmen of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Hua Gao
- Departmen of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Xiaodong Bai
- Departmen of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
| | - Baojun Wang
- Departmen of Orthopedics, Beijing Friendship Hospital, Capital Medical University, Beijing, China
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