1
|
Si Y, Li Y, Gu K, Yin H, Ma Y. Icariin ameliorates osteoporosis in ovariectomized rats by targeting Cullin 3/Nrf2/OH pathway for osteoclast inhibition. Biomed Pharmacother 2024; 173:116422. [PMID: 38471268 DOI: 10.1016/j.biopha.2024.116422] [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: 12/22/2023] [Revised: 03/07/2024] [Accepted: 03/08/2024] [Indexed: 03/14/2024] Open
Abstract
Osteoporosis, characterized by low bone mass and bone microarchitecture breakdown, has become a growing public health problem. The increase in oxidative stress could lead to an imbalance between osteoblasts-mediated osteogenesis and osteoclast-mediated bone resorption, which gives rise to osteoporosis. Nrf2 is a master transcription factor that regulates oxidative stress and has recently been reported to take part in the development of osteoporosis. Icariin, a leading active flavonoid in herbal Epimedium pubescens, has significant antioxidant activity in and is widely applied for treating bone diseases. In this study, we aimed to explore the effect of icariin on osteoclastogenesis and its potential mechanism from the perspective of oxidative stress inhibition, using ovariectomized (OVX) rats and RANKL-induced RAW264.7 cells. Our results demonstrated that icariin-treated OVX rats exhibited higher bone density, fewer tartrate-resistant acid phosphatase (TRAP)-positive osteoclasts, and lower ROS levels in bone tissues than vehicle-treated OVX rats. Also, icariin suppressed osteoclast differentiation and inhibited the expression of osteoclastogenesis-related genes, such as NFATc1, Ctsk, Trap, and c-Fos, in RANKL-induced RAW264.7 cells. Icariin also reduced intracellular ROS levels by increasing the expression of nuclear Nrf2 and HO-1. Further mechanistic studies showed icariin inhibited Cullin 3 expression and could delay Nrf2 degradation by reducing the ubiquitination of endogenous Nrf2 in RANKL-stimulated RAW264.7 cells, and these effects were markedly reversed by cullin three overexpression. These findings suggest icariin alleviated osteoporosis by suppressing osteoclastogenesis via targeting the Cullin 3/Nrf2/OH signaling pathway. Our study implied that icariin may be a potential candidate to treat osteoporosis.
Collapse
Affiliation(s)
- Yuhao Si
- School of Acupuncture-Moxibustion and Tuina, School of Health Preservation and Rehabilitation, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Yan Li
- School of Medicine, Southeast University, Nanjing, Jiangsu Province 210009, China
| | - Kuan Gu
- College of Basic Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| | - Heng Yin
- Department of Traumatology & Orthopedics, Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi 214071, China; Jiangsu CM Clinical Innovation Center of Degenerative Bone & Joint Disease, Wuxi TCM Hospital Affiliated to Nanjing University of Chinese Medicine, Wuxi, Jiangsu Province 214071, China.
| | - Yong Ma
- College of Basic Medicine, Nanjing University of Chinese Medicine, Nanjing 210023, China
| |
Collapse
|
2
|
Yao Q, He X, Wang J, Liu J, Zhang Q, Zhang J, Bo Y, Lu L. DLEU2/EZH2/GFI1 Axis Regulates the Proliferation and Apoptosis of Human Bone Marrow Mesenchymal Stem Cells. Crit Rev Eukaryot Gene Expr 2024; 34:61-71. [PMID: 38305289 DOI: 10.1615/critreveukaryotgeneexpr.2023050337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Long non-coding RNAs (lncRNAs) has become a vital regulator in the pathogenesis of osteoporosis (OP). This study aimed to investigate the role of lncRNA DLEU2 in the development of proliferation and apoptosis of human bone marrow mesenchymal stem cells (hBMSCs). High-throughput sequencing in bone tissues from 3 pairs of healthy donors and OP patients was used to search for differential lncRNAs. The expression of DLEU2 was also verified in bone tissues. The hBMSCs were transfected with DLEU2 ASO. Cell viability was detected suing MTT. Cell proliferation was determined using colony formation and EdU assays. Cell cycle and apoptosis was detected using flow cytometry. RIP, RNA pulldown, and Co-IP assays were carried out to verify the interaction between protein and protein/RNA. The binding sites between GFI1 and the promoter of DLEU2 was verified using ChIP and luciferase assays. DLEU2 expression was down-regulated in OP patients. Knockdown of DLEU2 expression significantly inhibited proliferation and promoted apoptosis of hBMSCs. Moreover, DLEU2 could interact with EZH2 to induce the activation of GFI1. Additionally, GFI1 transcriptionally activated DLEU2. Taken together, DLEU2/EZH2/GFI1 axis suppressed proliferation and enhanced hBMSC apoptosis. This may provide novel strategy for OP.
Collapse
Affiliation(s)
- Qing Yao
- Department of Endocrinology and Metabolic Diseases, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213000, China
| | - Xuezhi He
- Department of Anatomy, Histology and Embryology, Research Centre for Bone and Stem Cells, Nanjing Medical University, Nanjing 210000, China
| | - Jing Wang
- Department of Anatomy, Histology and Embryology, Research Centre for Bone and Stem Cells, Nanjing Medical University, Nanjing 210000, China
| | - Juan Liu
- Department of Endocrinology and Metabolic Diseases, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213000, China
| | - Qing Zhang
- Changzhou Medical Center, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213000, China
| | - Jie Zhang
- Department of Endocrinology and Metabolic Diseases, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213000, China
| | - Yawen Bo
- Department of Endocrinology and Metabolic Diseases, The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University, Changzhou 213000, China
| | - Lin Lu
- The Affiliated Changzhou No. 2 People's Hospital of Nanjing Medical University
| |
Collapse
|
3
|
Gordon JAR, Tye CE, Banerjee B, Ghule PN, van Wijnen AJ, Kabala FS, Page NA, Falcone MM, Stein JL, Stein GS, Lian JB. LINC01638 sustains human mesenchymal stem cell self-renewal and competency for osteogenic cell fate. Sci Rep 2023; 13:20314. [PMID: 37985890 PMCID: PMC10662126 DOI: 10.1038/s41598-023-46202-z] [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: 07/27/2023] [Accepted: 10/29/2023] [Indexed: 11/22/2023] Open
Abstract
The skeleton forms from multipotent human mesenchymal stem cells (hMSCs) competent to commit to specific lineages. Long noncoding RNAs (lncRNAs) have been identified as key epigenetic regulators of tissue development. However, regulation of osteogenesis by lncRNAs as mediators of commitment to the bone phenotype is largely unexplored. We focused on LINC01638, which is highly expressed in hMSCs and has been studied in cancers, but not in regulating osteogenesis. We demonstrated that LINC01638 promotes initiation of the osteoblast phenotype. Our findings reveal that LINC01638 is present at low levels during the induction of osteoblast differentiation. CRISPRi knockdown of LINC01638 in MSCs prevents osteogenesis and alkaline phosphatase expression, inhibiting osteoblast differentiation. This resulted in decreased MSC growth rate, accompanied by double-strand breaks, DNA damage, and cell senescence. Transcriptome profiling of control and LINC01638-depleted hMSCs identified > 2000 differentially expressed mRNAs related to cell cycle, cell division, spindle formation, DNA repair, and osteogenesis. Using ChIRP-qPCR, molecular mechanisms of chromatin interactions revealed the LINC01638 locus (Chr 22) includes many lncRNAs and bone-related genes. These novel findings identify the obligatory role for LINC01638 to sustain MSC pluripotency regulating osteoblast commitment and growth, as well as for physiological remodeling of bone tissue.
Collapse
Affiliation(s)
- Jonathan A R Gordon
- Department of Biochemistry, University of Vermont, Burlington, VT, 05405, USA
- University of Vermont Cancer Center, Larner College of Medicine, University of Vermont, 89 Beaumont Avenue, Burlington, VT, 05405, USA
| | - Coralee E Tye
- Department of Biochemistry, University of Vermont, Burlington, VT, 05405, USA
- University of Vermont Cancer Center, Larner College of Medicine, University of Vermont, 89 Beaumont Avenue, Burlington, VT, 05405, USA
| | | | - Prachi N Ghule
- Department of Biochemistry, University of Vermont, Burlington, VT, 05405, USA
- University of Vermont Cancer Center, Larner College of Medicine, University of Vermont, 89 Beaumont Avenue, Burlington, VT, 05405, USA
| | - Andre J van Wijnen
- Department of Biochemistry, University of Vermont, Burlington, VT, 05405, USA
| | - Fleur S Kabala
- Department of Biochemistry, University of Vermont, Burlington, VT, 05405, USA
| | - Natalie A Page
- Department of Biochemistry, University of Vermont, Burlington, VT, 05405, USA
| | - Michelle M Falcone
- Department of Biochemistry, University of Vermont, Burlington, VT, 05405, USA
| | - Janet L Stein
- Department of Biochemistry, University of Vermont, Burlington, VT, 05405, USA
- University of Vermont Cancer Center, Larner College of Medicine, University of Vermont, 89 Beaumont Avenue, Burlington, VT, 05405, USA
| | - Gary S Stein
- Department of Biochemistry, University of Vermont, Burlington, VT, 05405, USA
- University of Vermont Cancer Center, Larner College of Medicine, University of Vermont, 89 Beaumont Avenue, Burlington, VT, 05405, USA
| | - Jane B Lian
- Department of Biochemistry, University of Vermont, Burlington, VT, 05405, USA.
- University of Vermont Cancer Center, Larner College of Medicine, University of Vermont, 89 Beaumont Avenue, Burlington, VT, 05405, USA.
| |
Collapse
|
4
|
Zhang W, Liu Y, Luo Y, Shu X, Pu C, Zhang B, Feng P, Xiong A, Kong Q. New insights into the role of long non-coding RNAs in osteoporosis. Eur J Pharmacol 2023; 950:175753. [PMID: 37119958 DOI: 10.1016/j.ejphar.2023.175753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2023] [Revised: 04/12/2023] [Accepted: 04/26/2023] [Indexed: 05/01/2023]
Abstract
Osteoporosis is a common disease in elderly individuals, and osteoporosis can easily lead to bone and hip fractures that seriously endanger the health of elderly individuals. At present, the treatment of osteoporosis is mainly anti-osteoporosis drugs, but there are side effects associated with anti-osteoporosis drugs. Therefore, it is very important to develop early diagnostic indicators and new therapeutic drugs for the prevention and treatment of osteoporosis. Long noncoding RNAs (lncRNAs), noncoding RNAs longer than 200 nucleotides, can be used as diagnostic markers for osteoporosis, and lncRNAs play an important role in the progression of osteoporosis. Many studies have shown that lncRNAs can be the target of osteoporosis. Therefore, herein, the role of lncRNAs in osteoporosis is summarized, aiming to provide some information for the prevention and treatment of osteoporosis.
Collapse
Affiliation(s)
- Weifei Zhang
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Yuheng Liu
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Yuanrui Luo
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China
| | - Xiang Shu
- Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region (Hospital.C.T.), Sichuan University, Chengdu, 610041, China
| | - Congmin Pu
- Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region (Hospital.C.T.), Sichuan University, Chengdu, 610041, China
| | - Bin Zhang
- Department of Orthopedics, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region (Hospital.C.T.), Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Pin Feng
- Department of Orthopedics, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region (Hospital.C.T.), Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China
| | - Ao Xiong
- Department of Bone and Joint Surgery, Peking University Shenzhen Hospital, Shenzhen, 518036, China.
| | - Qingquan Kong
- Department of Orthopedics, Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, Sichuan, China; Department of Orthopedics, Hospital of Chengdu Office of People's Government of Tibetan Autonomous Region (Hospital.C.T.), Orthopedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, China.
| |
Collapse
|
5
|
Zhang P, Chen H, Xie B, Zhao W, Shang Q, He J, Shen G, Yu X, Zhang Z, Zhu G, Chen G, Yu F, Liang D, Tang J, Cui J, Liu Z, Ren H, Jiang X. Bioinformatics identification and experimental validation of m6A-related diagnostic biomarkers in the subtype classification of blood monocytes from postmenopausal osteoporosis patients. Front Endocrinol (Lausanne) 2023; 14:990078. [PMID: 36967763 PMCID: PMC10031099 DOI: 10.3389/fendo.2023.990078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Accepted: 01/30/2023] [Indexed: 03/11/2023] Open
Abstract
BACKGROUND Postmenopausal osteoporosis (PMOP) is a common bone disorder. Existing study has confirmed the role of exosome in regulating RNA N6-methyladenosine (m6A) methylation as therapies in osteoporosis. However, it still stays unclear on the roles of m6A modulators derived from serum exosome in PMOP. A comprehensive evaluation on the roles of m6A modulators in the diagnostic biomarkers and subtype identification of PMOP on the basis of GSE56815 and GSE2208 datasets was carried out to investigate the molecular mechanisms of m6A modulators in PMOP. METHODS We carried out a series of bioinformatics analyses including difference analysis to identify significant m6A modulators, m6A model construction of random forest, support vector machine and nomogram, m6A subtype consensus clustering, GO and KEGG enrichment analysis of differentially expressed genes (DEGs) between different m6A patterns, principal component analysis, and single sample gene set enrichment analysis (ssGSEA) for evaluation of immune cell infiltration, experimental validation of significant m6A modulators by real-time quantitative polymerase chain reaction (RT-qPCR), etc. RESULTS In the current study, we authenticated 7 significant m6A modulators via difference analysis between normal and PMOP patients from GSE56815 and GSE2208 datasets. In order to predict the risk of PMOP, we adopted random forest model to identify 7 diagnostic m6A modulators, including FTO, FMR1, YTHDC2, HNRNPC, RBM15, RBM15B and WTAP. Then we selected the 7 diagnostic m6A modulators to construct a nomogram model, which could provide benefit with patients according to our subsequent decision curve analysis. We classified PMOP patients into 2 m6A subtypes (clusterA and clusterB) on the basis of the significant m6A modulators via a consensus clustering approach. In addition, principal component analysis was utilized to evaluate the m6A score of each sample for quantification of the m6A subgroups. The m6A scores of patients in clusterB were higher than those of patients in clusterA. Moreover, we observed that the patients in clusterA had close correlation with immature B cell and gamma delta T cell immunity while clusterB was linked to monocyte, neutrophil, CD56dim natural killer cell, and regulatory T cell immunity, which has close connection with osteoclast differentiation. Notably, m6A modulators detected by RT-qPCR showed generally consistent expression levels with the bioinformatics results. CONCLUSION In general, m6A modulators exert integral function in the pathological process of PMOP. Our study of m6A patterns may provide diagnostic biomarkers and immunotherapeutic strategies for future PMOP treatment.
Collapse
Affiliation(s)
- Peng Zhang
- Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Honglin Chen
- Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Bin Xie
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wenhua Zhao
- Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Qi Shang
- Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jiahui He
- Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Gengyang Shen
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Xiang Yu
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhida Zhang
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Guangye Zhu
- Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Guifeng Chen
- Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Fuyong Yu
- Guangzhou University of Chinese Medicine, Guangzhou, China
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - De Liang
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jingjing Tang
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jianchao Cui
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Zhixiang Liu
- Affiliated Huadu Hospital, Southern Medical University, Guangzhou, China
- *Correspondence: Zhixiang Liu, ; Hui Ren, ; Xiaobing Jiang,
| | - Hui Ren
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- *Correspondence: Zhixiang Liu, ; Hui Ren, ; Xiaobing Jiang,
| | - Xiaobing Jiang
- Lingnan Medical Research Center of Guangzhou University of Chinese Medicine, Guangzhou, China
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, China
- *Correspondence: Zhixiang Liu, ; Hui Ren, ; Xiaobing Jiang,
| |
Collapse
|
6
|
Yang K, Cao F, Xue Y, Tao L, Zhu Y. Three Classes of Antioxidant Defense Systems and the Development of Postmenopausal Osteoporosis. Front Physiol 2022; 13:840293. [PMID: 35309045 PMCID: PMC8927967 DOI: 10.3389/fphys.2022.840293] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 01/25/2022] [Indexed: 01/04/2023] Open
Abstract
Osteoporosis is a common bone imbalance disease that threatens the health of postmenopausal women. Estrogen deficiency accelerates the aging of women. Oxidative stress damage is regarded as the main pathogenesis of postmenopausal osteoporosis. The accumulation of reactive oxygen species in the bone microenvironment plays a role in osteoblast and osteoclast apoptosis. Improving the oxidative state is essential for the prevention and treatment of postmenopausal osteoporosis. There are three classes of antioxidant defense systems in the body to eliminate free radicals and peroxides including antioxidant substances, antioxidant enzymes, and repair enzymes. In our review, we demonstrated the mechanism of antioxidants and their effect on bone metabolism in detail. We concluded that glutathione/oxidized glutathione (GSH/GSSG) conversion involved the PI3K/Akt-Nrf2/HO-1 signaling pathway and that the antioxidant enzyme-mediated mitochondrial apoptosis pathway of osteoblasts was necessary for the development of postmenopausal osteoporosis. Since the current therapeutic effects of targeting bone cells are not significant, improving the systemic peroxidation state and then regulating bone homeostasis will be a new method for the treatment of postmenopausal osteoporosis.
Collapse
Affiliation(s)
- Keda Yang
- Department of Orthopedics, First Hospital of China Medical University, Shenyang, China
| | - Fangming Cao
- Department of Orthopedics, First Hospital of China Medical University, Shenyang, China
| | - Yuchuan Xue
- The First Department of Clinical Medicine, China Medical University, Shenyang, China
| | - Lin Tao
- Department of Orthopedics, First Hospital of China Medical University, Shenyang, China
- *Correspondence: Lin Tao,
| | - Yue Zhu
- Department of Orthopedics, First Hospital of China Medical University, Shenyang, China
- Yue Zhu,
| |
Collapse
|
7
|
Su Y, Chen X, Zhou H, Shaw S, Chen J, Isales CM, Zhao J, Shi X. Expression of long noncoding RNA Xist is induced by glucocorticoids. Front Endocrinol (Lausanne) 2022; 13:1005944. [PMID: 36187119 PMCID: PMC9516292 DOI: 10.3389/fendo.2022.1005944] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 08/29/2022] [Indexed: 11/19/2022] Open
Abstract
Glucocorticoids (GCs) are potent anti-inflammatory and immunosuppressive agents. However, their clinical usage is limited by severe multisystemic side effects. Glucocorticoid induced osteoporosis results in significant morbidity and mortality but the cellular and molecular mechanisms underlying GC-induced bone loss are not clear. GC use results in decreased osteoblast differentiation with increased marrow adiposity through effects on bone marrow stem cells. GC effects are transduced through its receptor (GR). To identify novel GR regulated genes, we performed RNA sequencing (RNA-Seq) analysis comparing conditional GR knockout mouse made by crossing the floxed GR animal with the Col I promoter-Cre, versus normal floxed GR without Cre, and that testing was specific for Col I promoter active cells, such as bone marrow mesenchymal stem/osteoprogenitor cells (MSCs) and osteoblasts. Results showed 15 upregulated genes (3- to 10-fold) and 70 downregulated genes (-2.7- to -10-fold), with the long noncoding RNA X-inactive specific transcript (Xist) downregulated the most. The differential expression of genes measured by RNA-Seq was validated by qRT-PCR analysis of selected genes and the GC/GR signaling-dependent expression of Xist was further demonstrated by GC (dexamethasone) treatment of GR-deficient MSCs in vitro and by GC injection of C57BL/6 mice (wild-type males and females) in vivo. Our data revealed that the long noncoding RNA Xist is a GR regulated gene and its expression is induced by GC both in vitro and in vivo. To our knowledge, this is the first evidence showing that Xist is transcriptionally regulated by GC/GR signaling.
Collapse
Affiliation(s)
- Yun Su
- Department of Neuroscience & Regenerative Medicine, Augusta University, Augusta, GA, United States
| | - Xing Chen
- Department of Mathematics, Logistical Engineering University, Chongqing, China
| | - Hongyan Zhou
- Department of Neuroscience & Regenerative Medicine, Augusta University, Augusta, GA, United States
- Department of Pathology and Pathophysiology, School of Medicine, Jianghan University, Wuhan, China
| | - Sean Shaw
- Department of Neuroscience & Regenerative Medicine, Augusta University, Augusta, GA, United States
| | - Jie Chen
- Division of Biostatistics and Data Science, Department of Population Health Sciences, Augusta University, Augusta, GA, United States
| | - Carlos M. Isales
- Department of Neuroscience & Regenerative Medicine, Augusta University, Augusta, GA, United States
- Department of Orthopaedic Surgery, Augusta University, Augusta, GA, United States
| | - Jing Zhao
- Institute of Interdisciplinary Complex Research, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Xingming Shi
- Department of Neuroscience & Regenerative Medicine, Augusta University, Augusta, GA, United States
- Department of Orthopaedic Surgery, Augusta University, Augusta, GA, United States
- *Correspondence: Xingming Shi,
| |
Collapse
|
8
|
Zhang Y, Yuan Q, Wei Q, Li P, Zhuang Z, Li J, Liu Y, Zhang L, Hong Z, He W, Wang H, Li W. Long noncoding RNA XIST modulates microRNA-135/CREB1 axis to influence osteogenic differentiation of osteoblast-like cells in mice with tibial fracture healing. Hum Cell 2022; 35:133-149. [PMID: 34635983 DOI: 10.1007/s13577-021-00629-6] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2021] [Accepted: 10/02/2021] [Indexed: 12/20/2022]
Abstract
Fracture healing is a complex event with the involvement of many cell systems, cytokines, as well as mRNAs. Herein, we report the interactions among long noncoding RNA X-inactive specific transcript (XIST)/microRNA-135 (miR-135)/cAMP response element-binding protein 1 (CREB1) axis during fracture healing. We observed increased expression of XIST in patients with long-term unhealed fracture by microarray analysis. Subsequently, a mouse model with tibial fracture and a cell model using osteoblast-like MC3T3-E1 cells were generated. The XIST overexpression during fracture healing decreased proliferation and differentiation of MC3T3-E1 cells, while silencing of XIST facilitated MC3T3-E1 cell growth. Furthermore, miR-135 targeted CREB1 and negatively regulated its expression. XIST acted as a sponge for miR-135, thereby upregulating CREB1 and promoting the activity of the TNF-α/RANKL pathway. Transfection of miR-135 inhibitor or CREB1 overexpression blocked the stimulating effects of XIST knockdown on MC3T3-E1 cell growth. Besides, specific inhibitors of the TNF-α/RANKL pathway reversed the repressive role of XIST in cell osteogenic differentiation. All in all, these findings suggest that XIST knockdown induces the differentiation of osteoblast-like cells via regulation of the miR-135/CREB1/TNF-α/RANKL axis. XIST, as a consequence, represents an attractive therapeutic strategy to accelerate fracture healing.
Collapse
Affiliation(s)
- Ying Zhang
- Department of Orthopaedics, Medical Center of Hip, Luoyang Orthopedic-Traumatological Hospital (Orthopedics Hospital of Henan Province), No.82, Qiming South Road, Fuhe District, Luoyang, 471002, Henan, People's Republic of China
- Postdoctoral Mobile Station, Guangzhou University of Traditional Chinese Medicine, Guangzhou, 510405, Guangdong, People's Republic of China
| | - Qiang Yuan
- Department of Orthopaedics, Medical Center of Hip, Luoyang Orthopedic-Traumatological Hospital (Orthopedics Hospital of Henan Province), No.82, Qiming South Road, Fuhe District, Luoyang, 471002, Henan, People's Republic of China
- Luoyang Graduate Training Department, Henan University of Traditional Chinese Medicine, Zhengzhou, 450046, Henan, People's Republic of China
| | - Qiushi Wei
- Department of Orthopaedics, Institute of Orthopaedics of Guangzhou University of Chinese Medicine (The Third Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine), Guangzhou, 510240, Guangdong, People's Republic of China
| | - Peifeng Li
- Department of Orthopaedics, Medical Center of Hip, Luoyang Orthopedic-Traumatological Hospital (Orthopedics Hospital of Henan Province), No.82, Qiming South Road, Fuhe District, Luoyang, 471002, Henan, People's Republic of China
| | - Zhikun Zhuang
- First Clinical Medical College, Guangzhou University of Traditional Chinese Medicine, Guangzhou, 510405, Guangdong, People's Republic of China
| | - Jitian Li
- Department of Orthopaedics, Medical Center of Hip, Luoyang Orthopedic-Traumatological Hospital (Orthopedics Hospital of Henan Province), No.82, Qiming South Road, Fuhe District, Luoyang, 471002, Henan, People's Republic of China
| | - Youwen Liu
- Department of Orthopaedics, Medical Center of Hip, Luoyang Orthopedic-Traumatological Hospital (Orthopedics Hospital of Henan Province), No.82, Qiming South Road, Fuhe District, Luoyang, 471002, Henan, People's Republic of China
| | - Leilei Zhang
- Department of Orthopaedics, Medical Center of Hip, Luoyang Orthopedic-Traumatological Hospital (Orthopedics Hospital of Henan Province), No.82, Qiming South Road, Fuhe District, Luoyang, 471002, Henan, People's Republic of China
| | - Zhinan Hong
- Department of Orthopaedics, Institute of Orthopaedics of Guangzhou University of Chinese Medicine (The Third Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine), Guangzhou, 510240, Guangdong, People's Republic of China
| | - Wei He
- Department of Orthopaedics, Institute of Orthopaedics of Guangzhou University of Chinese Medicine (The Third Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine), Guangzhou, 510240, Guangdong, People's Republic of China
| | - Haibin Wang
- Department of Orthopaedics Laboratory, Guangzhou University of Traditional Chinese Medicine, Guangzhou, 510405, Guangdong, People's Republic of China.
| | - Wuyin Li
- Department of Orthopaedics, Medical Center of Hip, Luoyang Orthopedic-Traumatological Hospital (Orthopedics Hospital of Henan Province), No.82, Qiming South Road, Fuhe District, Luoyang, 471002, Henan, People's Republic of China.
| |
Collapse
|