1
|
Zhang J, Cao J, Liu Y, Zhao H. Advances in the Pathogenesis of Steroid-Associated Osteonecrosis of the Femoral Head. Biomolecules 2024; 14:667. [PMID: 38927070 PMCID: PMC11202272 DOI: 10.3390/biom14060667] [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: 04/18/2024] [Revised: 05/30/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024] Open
Abstract
Osteonecrosis of the femoral head (ONFH) is a refractory orthopedic condition characterized by bone cell ischemia, necrosis, bone trabecular fracture, and clinical symptoms such as pain, femoral head collapse, and joint dysfunction that can lead to disability. The disability rate of ONFH is very high, which imposes a significant economic burden on both families and society. Steroid-associated osteonecrosis of the femoral head (SANFH) is the most common type of ONFH. However, the pathogenesis of SANFH remains unclear, and it is an urgent challenge for orthopedic surgeons to explore it. In this paper, the pathogenesis of SANFH and its related signaling pathways were briefly reviewed to enhance comprehension of the pathogenesis and prevention of SANFH.
Collapse
Affiliation(s)
- Jie Zhang
- The First Clinical College of Medicine, Lanzhou University, Lanzhou 730000, China; (J.Z.); (J.C.); (Y.L.)
| | - Jianze Cao
- The First Clinical College of Medicine, Lanzhou University, Lanzhou 730000, China; (J.Z.); (J.C.); (Y.L.)
| | - Yongfei Liu
- The First Clinical College of Medicine, Lanzhou University, Lanzhou 730000, China; (J.Z.); (J.C.); (Y.L.)
| | - Haiyan Zhao
- Department of Orthopedics, The First Hospital of Lanzhou University, Lanzhou 730000, China
| |
Collapse
|
2
|
Jiang H, Lin C, Cai T, Jiang L, Lou C, Lin S, Wang W, Yan Z, Pan X, Xue X. Taxifolin-mediated Nrf2 activation ameliorates oxidative stress and apoptosis for the treatment of glucocorticoid-induced osteonecrosis of the femoral head. Phytother Res 2024; 38:156-173. [PMID: 37846877 DOI: 10.1002/ptr.8031] [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: 04/28/2023] [Revised: 08/27/2023] [Accepted: 09/23/2023] [Indexed: 10/18/2023]
Abstract
Glucocorticoid-induced osteonecrosis of the femoral head (GIONFH) is the main complication secondary to long-term or excessive use of glucocorticoids (GCs). Taxifolin (TAX) is a natural antioxidant with various pharmacological effects, such as antioxidative stress and antiapoptotic properties. The purpose of this study was to explore whether TAX could regulate oxidative stress and apoptosis in GIONFH by activating the nuclear factor erythroid 2-related factor 2 (Nrf2) pathway. We conducted qRT-PCR, Western blotting, TUNEL assays, flow cytometry, and other experiments in vitro. Microcomputed tomography analysis, hematoxylin-eosin staining, and immunohistochemical staining were performed to determine the therapeutic effect of TAX in vivo. TAX mitigated the overexpression of ROS and NOX gene expression induced by DEX, effectively reducing oxidative stress. Additionally, TAX could alleviate DEX-induced osteoblast apoptosis, as evidenced by qRT-PCR, Western blotting, and other experimental techniques. Our in vivo studies further demonstrated that TAX mitigates the progression of GIONFH in rats by combating oxidative stress and apoptosis. Mechanistic exploration revealed that TAX thwarts the progression of GIONFH through the activation of the Nrf2 pathway. Overall, our research herein reports that TAX-mediated Nrf2 activation ameliorates oxidative stress and apoptosis for the treatment of GIONFH.
Collapse
Affiliation(s)
- Hongyi Jiang
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Chihao Lin
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Tingwen Cai
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Liting Jiang
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Chao Lou
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Shida Lin
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Weidan Wang
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Zijian Yan
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
- Key Laboratory of Orthopedics of Zhejiang Province, Wenzhou, China
- The Second Clinical School of Medicine, Wenzhou Medical University, Wenzhou, China
| | - Xiaoyun Pan
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| | - Xinghe Xue
- Department of Orthopedics, The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical University, Wenzhou, China
| |
Collapse
|
3
|
Liu L, Yu Z, Ma Q, Yu J, Gong Z, Deng G, Wu X. LncRNA NR_003508 Suppresses Mycobacterium tuberculosis-Induced Programmed Necrosis via Sponging miR-346-3p to Regulate RIPK1. Int J Mol Sci 2023; 24:ijms24098016. [PMID: 37175724 PMCID: PMC10179217 DOI: 10.3390/ijms24098016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Revised: 04/25/2023] [Accepted: 04/26/2023] [Indexed: 05/15/2023] Open
Abstract
Emerging evidence suggests that long non-coding RNAs (LncRNAs) are involved in Mtb-induced programmed necrosis. Among these LncRNAs, LncRNA NR_003508 is associated with LPS-induced acute respiratory distress syndrome. However, whether LncRNA NR_003508 contributes to Mtb-induced programmed necrosis remains undocumented. Firstly, the expression of LncRNA NR_003508 was determined using RT-qPCR and FISH. The protein expression of RIPK1, p-RIPK1, RIPK3, p-RIPK3, MLKL, and p-MLKL was measured by Western blot in RAW264.7 and mouse lung tissues. Furthermore, luciferase reporter assays and bioinformatics were used to predict specific miRNA (miR-346-3p) and mRNA (RIPK1) regulated by LncRNA NR_003508. In addition, RT-qPCR was used to detect the RIPK1 expression in TB patients and healthy peripheral blood. The flow cytometry assay was performed to detect cell necrosis rates. Here we show that BCG infection-induced cell necrosis and increased LncRNA NR_003508 expression. si-NR_003508 inhibited BCG/H37Rv-induced programmed necrosis in vitro or in vivo. Functionally, LncRNA NR_003508 has been verified as a ceRNA for absorbing miR-346-3p, which targets RIPK1. Moreover, RIPK1 expression was elevated in the peripheral blood of TB patients compared with healthy people. Knockdown of LncRNA NR_003508 or miR-346-3p overexpression suppresses cell necrosis rate and ROS accumulation in RAW264.7 cells. In conclusion, LncRNA NR_003508 functions as a positive regulator of Mtb-induced programmed necrosis via sponging miR-346-3p to regulate RIPK1. Our findings may provide a promising therapeutic target for tuberculosis.
Collapse
Affiliation(s)
- Li Liu
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan 750021, China
- School of Life Science, Ningxia University, Yinchuan 750021, China
| | - Zhirui Yu
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan 750021, China
- School of Life Science, Ningxia University, Yinchuan 750021, China
| | - Qinmei Ma
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan 750021, China
- School of Life Science, Ningxia University, Yinchuan 750021, China
| | - Jialin Yu
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan 750021, China
- School of Life Science, Ningxia University, Yinchuan 750021, China
| | - Zhaoqian Gong
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan 750021, China
- School of Life Science, Ningxia University, Yinchuan 750021, China
| | - Guangcun Deng
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan 750021, China
- School of Life Science, Ningxia University, Yinchuan 750021, China
| | - Xiaoling Wu
- Key Lab of Ministry of Education for Protection and Utilization of Special Biological Resources in Western China, Ningxia University, Yinchuan 750021, China
- School of Life Science, Ningxia University, Yinchuan 750021, China
| |
Collapse
|
4
|
Liu G, Luo S, Lei Y, Jiao M, Cao R, Guan H, Tian R, Wang K, Yang P. Osteogenesis-Related Long Noncoding RNA GAS5 as a Novel Biomarker for Osteonecrosis of Femoral Head. Front Cell Dev Biol 2022; 10:857612. [PMID: 35392165 PMCID: PMC8980611 DOI: 10.3389/fcell.2022.857612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 03/01/2022] [Indexed: 11/20/2022] Open
Abstract
Background: The lack of effective biomarkers makes it difficult to achieve early diagnosis and intervention for osteonecrosis of the femoral head (ONFH). Hence, we aimed to identify novel long noncoding RNA (lncRNA) biomarkers for ONFH. Methods: High-throughput RNA sequencing was performed to detect lncRNA and mRNA expression levels in subchondral bone samples from three patients with ONFH and three patients with femoral neck fractures. Integrated bioinformatics analyses were conducted to identify lncRNAs associated with ONFH development and their potential functions and signaling pathways. A co-expression network was constructed based on the gene time-series expression data in GSE113253. After selecting lncRNA GAS5 as a novel biomarker for ONFH, bone marrow mesenchymal stem cell (BMSC) osteogenic differentiation assays were performed to verify the association between lncRNA GAS5 and osteogenic differentiation. Alkaline phosphatase (ALP) staining and quantitative reverse transcription polymerase chain reaction (RT-qPCR) were used to measure the osteogenic phenotype and lncRNA GAS5 expression. Finally, for further validation, ONFH rat models were established, and lncRNA GAS5 expression in subchondral bone was detected by RT-qPCR. Results: We identified 126 and 959 differentially expressed lncRNAs and genes, respectively. lncRNA GAS5 expression level was significantly downregulated in patients with ONFH compared to the control group patients. The BMSC osteogenic differentiation assays showed that ALP activity increased gradually from days 3 to 7, while the lncRNA GAS5 expression level was significantly upregulated in the osteogenic differentiation induction groups. Furthermore, in vivo experiments suggested that the bone volume/tissue volume value and trabecular thickness significantly decreased in the ONFH rat model group compared to the control group, whereas the trabecular space significantly increased in the ONFH group compared to the control group. In addition, the lncRNA GAS5 expression level significantly decreased in the ONFH rat model group. Conclusion: The lncRNA GAS5 expression level was highly associated with BMSC osteogenic differentiation and was significantly downregulated in both the subchondral trabecular bone tissue of ONFH patients and ONFH rat models. Therefore, lncRNA GAS5 can serve as an ONFH osteogenic biomarker to provide an effective target for early diagnosis and molecular therapy of ONFH.
Collapse
|
5
|
GNE-493 inhibits prostate cancer cell growth via Akt-mTOR-dependent and -independent mechanisms. Cell Death Dis 2022; 8:120. [PMID: 35296639 PMCID: PMC8927604 DOI: 10.1038/s41420-022-00911-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Accepted: 02/18/2022] [Indexed: 11/27/2022]
Abstract
GNE-493 is a novel PI3K/mTOR dual inhibitor with improved metabolic stability, oral bioavailability, and excellent pharmacokinetic parameters. Here GNE-493 potently inhibited viability, proliferation, and migration in different primary and established (LNCaP and PC-3 lines) prostate cancer cells, and provoking apoptosis. GNE-493 blocked Akt-mTOR activation in primary human prostate cancer cells. A constitutively-active mutant Akt1 restored Akt-mTOR activation but only partially ameliorated GNE-493-induced prostate cancer cell death. Moreover, GNE-493 was still cytotoxic in Akt1/2-silenced primary prostate cancer cells. Significant oxidative stress and programmed necrosis cascade activation were detected in GNE-493-treated prostate cancer cells. Moreover, GNE-493 downregulated Sphingosine Kinase 1 (SphK1), causing ceramide accumulation in primary prostate cancer cells. Daily single dose GNE-493 oral administration robustly inhibited the growth of the prostate cancer xenograft in the nude mice. Akt-mTOR inactivation, SphK1 downregulation, ceramide level increase, and oxidative injury were detected in GNE-493-treated prostate cancer xenograft tissues. Together, GNE-493 inhibited prostate cancer cell growth possibly through the Akt-mTOR-dependent and -independent mechanisms.
Collapse
|
6
|
Xu H, Xia M, Sun L, Wang H, Zhang WB. Osteocytes Enhance Osteogenesis by Autophagy-Mediated FGF23 Secretion Under Mechanical Tension. Front Cell Dev Biol 2022; 9:782736. [PMID: 35174158 PMCID: PMC8841855 DOI: 10.3389/fcell.2021.782736] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2021] [Accepted: 12/01/2021] [Indexed: 01/08/2023] Open
Abstract
Mechanical stimuli control cell behaviors that are crucial for bone tissue repair. Osteocytes sense extracellular mechanical stimuli then convert them into biochemical signals to harmonize bone remodeling. However, the mechanisms underlying this process remain unclear. Autophagy, which is an evolutionarily preserved process, that occurs at a basal level when stimulated by multiple environmental stresses. We postulated that mechanical stimulation upregulates osteocyte autophagy via AMPK-associated signaling, driving osteocyte-mediated osteogenesis. Using a murine model of orthodontic tooth movement, we show that osteocyte autophagy is triggered by mechanical tension, increasing the quantity of LC3B-positive osteocytes by 4-fold in the tension side. Both in vitro mechanical tension as well as the chemical autophagy agonist enhanced osteocyte Fibroblast growth factor 23 (FGF23) secretion, which is an osteogenenic related cytokine, by 2-and 3-fold, respectively. Conditioned media collected from tensioned osteocytes enhanced osteoblast viability. These results indicate that mechanical tension drives autophagy-mediated FGF23 secretion from osteocytes and promotes osteogenesis. Our findings highlight a potential strategy for accelerating osteogenesis in orthodontic clinical settings.
Collapse
Affiliation(s)
- Huiyue Xu
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Meng Xia
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
| | - Lian Sun
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Hua Wang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
| | - Wei-Bing Zhang
- Jiangsu Key Laboratory of Oral Diseases, Nanjing Medical University, Nanjing, China
- Department of Orthodontics, Affiliated Hospital of Stomatology, Nanjing Medical University, Nanjing, China
- Department of Stomatology, Dushu Lake Hospital Affiliated to Soochow University, Suzhou, China
- Department of Stomatology, Medical Center of Soochow University, Suzhou, China
- *Correspondence: Wei-Bing Zhang,
| |
Collapse
|
7
|
Gado M, Baschant U, Hofbauer LC, Henneicke H. Bad to the Bone: The Effects of Therapeutic Glucocorticoids on Osteoblasts and Osteocytes. Front Endocrinol (Lausanne) 2022; 13:835720. [PMID: 35432217 PMCID: PMC9008133 DOI: 10.3389/fendo.2022.835720] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Accepted: 02/10/2022] [Indexed: 02/06/2023] Open
Abstract
Despite the continued development of specialized immunosuppressive therapies in the form of monoclonal antibodies, glucocorticoids remain a mainstay in the treatment of rheumatological and auto-inflammatory disorders. Therapeutic glucocorticoids are unmatched in the breadth of their immunosuppressive properties and deliver their anti-inflammatory effects at unparalleled speed. However, long-term exposure to therapeutic doses of glucocorticoids decreases bone mass and increases the risk of fractures - particularly in the spine - thus limiting their clinical use. Due to the abundant expression of glucocorticoid receptors across all skeletal cell populations and their respective progenitors, therapeutic glucocorticoids affect skeletal quality through a plethora of cellular targets and molecular mechanisms. However, recent evidence from rodent studies, supported by clinical data, highlights the considerable role of cells of the osteoblast lineage in the pathogenesis of glucocorticoid-induced osteoporosis: it is now appreciated that cells of the osteoblast lineage are key targets of therapeutic glucocorticoids and have an outsized role in mediating their undesirable skeletal effects. As part of this article, we review the molecular mechanisms underpinning the detrimental effects of supraphysiological levels of glucocorticoids on cells of the osteoblast lineage including osteocytes and highlight the clinical implications of recent discoveries in the field.
Collapse
Affiliation(s)
- Manuel Gado
- Center for Regenerative Therapies TU Dresden, Technische Universität Dresden, Dresden, Germany
| | - Ulrike Baschant
- Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Aging, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Lorenz C. Hofbauer
- Center for Regenerative Therapies TU Dresden, Technische Universität Dresden, Dresden, Germany
- Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Aging, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
| | - Holger Henneicke
- Center for Regenerative Therapies TU Dresden, Technische Universität Dresden, Dresden, Germany
- Department of Medicine III, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- Center for Healthy Aging, University Hospital Carl Gustav Carus, Technische Universität Dresden, Dresden, Germany
- *Correspondence: Holger Henneicke,
| |
Collapse
|
8
|
Lu C, Qi H, Xu H, Hao Y, Yang Z, Yu W, Xu P. Global research trends of steroid-induced osteonecrosis of the femoral head: A 30-year bibliometric analysis. Front Endocrinol (Lausanne) 2022; 13:1027603. [PMID: 36325458 PMCID: PMC9618610 DOI: 10.3389/fendo.2022.1027603] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2022] [Accepted: 10/03/2022] [Indexed: 11/13/2022] Open
Abstract
OBJECTIVE To explore the global research trends and hotspots of steroid-induced osteonecrosis of the femoral head (SONFH) through qualitative and quantitative analysis of bibliometrics. METHODS All publications on SONFH published from 1992 to 2021 were extracted from the Web of Science Core Collection database. CiteSpace was used for the visualization analysis of major countries, active institutions, productive authors, and the burst of keywords. VOSviewer was used for coupling analysis of countries/regions, institutions, and authors. Microsoft Excel 2017 was used for statistical analysis, drawing bar charts, pie charts, and cumulative area charts. The software of MapInfo was used to draw the distribution map of the publications. RESULTS A total of 780 publications were included for analyses. The most productive year was 2020 with 98 records. China was the most influential country with 494 publications, an H-index of 59, and total citations of 16820. The most prolific institution was Shanghai Jiaotong University in China with 53 publications and 998 citations. Clinical Orthopaedics and Related Research (IF = 4.755, 2021) was the most active journal with 26 articles. The hot keywords were "osteonecrosis", "avascular necrosis", "osteogenic differentiation", "proliferation", "PPAR gamma", "apoptosis", "oxidative stress", "genetic polymorphism" and "mesenchymal stem cells". The keywords like "proliferation", "PPAR gamma" and "genome-wide" have emerged in recent years. CONCLUSION The number of publications in SONFH has increased significantly in the last three decades. The pathologic mechanism of SONFH gathered most research interests. Genomics and cell molecular biology of SONFH are the research frontiers.
Collapse
Affiliation(s)
- Chao Lu
- Department of Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Haodong Qi
- Department of Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
- Graduate School, Shaanxi University of traditional Chinese Medicine, Xi’an, China
| | - Hanbo Xu
- Department of Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
- Graduate School, Shaanxi University of traditional Chinese Medicine, Xi’an, China
| | - Yangquan Hao
- Department of Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Zhi Yang
- Department of Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Wenxing Yu
- Department of Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Peng Xu, ; Wenxing Yu,
| | - Peng Xu
- Department of Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
- *Correspondence: Peng Xu, ; Wenxing Yu,
| |
Collapse
|
9
|
Liang JQ, Zhou ZT, Bo L, Tan HN, Hu JH, Tan MS. Phosphoglycerate kinase 1 silencing by a novel microRNA microRNA-4523 protects human osteoblasts from dexamethasone through activation of Nrf2 signaling cascade. Cell Death Dis 2021; 12:964. [PMID: 34667156 PMCID: PMC8526604 DOI: 10.1038/s41419-021-04250-1] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/16/2021] [Accepted: 09/29/2021] [Indexed: 12/26/2022]
Abstract
Nuclear-factor-E2-related factor 2 (Nrf2) cascade activation can ameliorate dexamethasone (DEX)-induced oxidative injury and death in human osteoblasts. Phosphoglycerate kinase 1 (PGK1) depletion is shown to efficiently activate Nrf2 signaling by inducing methylglyoxal modification of Kelch-like ECH-associated protein 1 (Keap1). We here identified a novel PGK1-targeting microRNA: microRNA-4523 (miR-4523). RNA fluorescent in situ hybridization, RNA pull-down, and Argonaute-2 RNA immunoprecipitation results confirmed a direct binding between miR-4523 and PGK1 mRNA in primary human osteoblasts and hFOB1.19 osteoblastic cells. Forced overexpression of miR-4523, using a lentiviral construct, robustly decreased PGK1 3′-UTR (untranslated region) luciferase activity and downregulated its expression in human osteoblasts and hFOB1.19 cells. Furthermore, miR-4523 overexpression activated the Nrf2 signaling cascade, causing Keap1–Nrf2 disassociation, Nrf2 protein stabilization, and its nuclear translocation as well as transcription activation of Nrf2-dependent genes (NQO1, GCLC, and HO1) in human osteoblasts. By expressing a UTR-null PGK1 construct, miR-4523 overexpression-induced Nrf2 cascade activation was however largely inhibited. Importantly, DEX-induced reactive oxygen species production, oxidative injury, and cell apoptosis were significantly attenuated by miR-4523 overexpression in human osteoblasts and hFOB1.19 cells. Such actions by miR-4523 were abolished by Nrf2 shRNA or knockout, but mimicked by PGK1 knockout (using CRISPR/Cas9 method). In PGK1 knockout human osteoblasts, miR-4523 overexpression failed to further increase Nrf2 cascade activation and offer osteoblast cytoprotection against DEX. Significantly, miR-4523 is downregulated in human necrotic femoral head tissues of DEX-taking patients. Together, PGK1 silencing by miR-4523 protected human osteoblasts from DEX through activation of the Nrf2 signaling cascade.
Collapse
Affiliation(s)
- Jin-Qian Liang
- Department of Orthopaedics, Peking Union Medical College Hospital, Beijing, China
| | - Zhen-Tao Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, China.
| | - Lin Bo
- Department of Rheumatology, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Hai-Ning Tan
- Department of Orthopaedics, Peking Union Medical College Hospital, Beijing, China
| | - Jian-Hua Hu
- Department of Orthopaedics, Peking Union Medical College Hospital, Beijing, China.
| | - Ming-Sheng Tan
- Spinal Surgery, Sino-Japanese Friendship Hospital, Beijing, China.
| |
Collapse
|
10
|
Shan H, Gao X, Zhang M, Huang M, Fang X, Chen H, Tian B, Wang C, Zhou C, Bai J, Zhou X. Injectable ROS-scavenging hydrogel with MSCs promoted the regeneration of damaged skeletal muscle. J Tissue Eng 2021; 12:20417314211031378. [PMID: 34345399 PMCID: PMC8283072 DOI: 10.1177/20417314211031378] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Accepted: 06/23/2021] [Indexed: 01/27/2023] Open
Abstract
Skeletal muscle injury is a common disease accompanied by inflammation, and its treatment still faces many challenges. The local inflammatory microenvironment can be modulated by a novel ROS-scavenging hydrogel (Gel) we constructed. And MSCs could differentiate into myoblasts and contribute to muscle tissue homeostasis and regeneration. Here, Gel loaded with mesenchymal stem cells (MSCs) (Gel@MSCs) was developed for repairing the injured skeletal muscle. Results showed that the Gel improved the survivability and enhanced the proliferation of MSCs (≈two-fold), and the Gel@MSCs inhibited the local inflammatory responses as it promoted polarization of M2 macrophages (increased from 5% to 17%), the mediator of the production of anti-inflammatory factors. Western blotting and qPCR revealed the Gel promoted the expression of proteins (≈two-fold) and genes (≈two to six-fold) related to myogenesis in MSCs. Histological assessment indicated that the Gel or MSCs promoted regeneration of skeletal muscle, and the efficacy was more significant at Gel@MSCs than MSCs alone. Finally, behavioral experiments confirmed that Gel@MSCs improved the motor function of injured mice. In short, the Gel@MSCs system we constructed presented a positive effect on reducing skeletal muscle damage and promoted skeletal muscle regeneration, which might be a novel treatment for such injuries.
Collapse
Affiliation(s)
- Huajian Shan
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Xiang Gao
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Mingchao Zhang
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Man Huang
- Department of Oncology, Suzhou Dushuhu Public Hospital, Suzhou, Jiangsu, China
| | - Xiyao Fang
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Hao Chen
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Bo Tian
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Chao Wang
- Institute of Functional Nano & Soft Materials, Soochow University, Suzhou, Jiangsu, China
| | - Chenyu Zhou
- Faculty of Clinical Medicine, Xuzhou Medical University, Xuzhou, Jiangsu, China
| | - Jinyu Bai
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| | - Xiaozhong Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, Jiangsu, China
| |
Collapse
|
11
|
Zheng YH, Yang JJ, Tang PJ, Zhu Y, Chen Z, She C, Chen G, Cao P, Xu XY. A novel Keap1 inhibitor iKeap1 activates Nrf2 signaling and ameliorates hydrogen peroxide-induced oxidative injury and apoptosis in osteoblasts. Cell Death Dis 2021; 12:679. [PMID: 34226516 PMCID: PMC8257690 DOI: 10.1038/s41419-021-03962-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2021] [Revised: 06/16/2021] [Accepted: 06/22/2021] [Indexed: 02/08/2023]
Abstract
An ultra-large structure-based virtual screening has discovered iKeap1 as a direct Keap1 inhibitor that can efficiently activate Nrf2 signaling. We here tested its potential effect against hydrogen peroxide (H2O2)-induced oxidative injury in osteoblasts. In primary murine and human osteoblasts, iKeap1 robustly activated Nrf2 signaling at micromole concentrations. iKeap1 disrupted Keap1-Nrf2 association, causing Nrf2 protein stabilization, cytosol accumulation and nuclear translocation in murine and human osteoblasts. The anti-oxidant response elements (ARE) activity and transcription of Nrf2-ARE-dependent genes (including HO1, NQO1 and GCLC) were increased as well. Significantly, iKeap1 pretreatment largely ameliorated H2O2-induced reactive oxygen species production, lipid peroxidation and DNA damage as well as cell apoptosis and programmed necrosis in osteoblasts. Moreover, dexamethasone- and nicotine-induced oxidative injury and apoptosis were alleviated by iKeap1. Importantly, Nrf2 shRNA or CRISPR/Cas9-induced Nrf2 knockout completely abolished iKeap1-induced osteoblast cytoprotection against H2O2. Conversely, CRISPR/Cas9-induced Keap1 knockout induced Nrf2 cascade activation and mimicked iKeap1-induced cytoprotective actions in murine osteoblasts. iKeap1 was ineffective against H2O2 in the Keap1-knockout murine osteoblasts. Collectively, iKeap1 activated Nrf2 signaling cascade to inhibit H2O2-induced oxidative injury and death of osteoblasts.
Collapse
Affiliation(s)
- Yue-huan Zheng
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jian-jun Yang
- grid.412538.90000 0004 0527 0050Department of Orthopedics, Tenth People’s Hospital of Tongji University, Shanghai, China
| | - Pei-jun Tang
- grid.490559.4Department of Pulmonary, The Affiliated Infectious Diseases Hospital of Soochow University, The Fifth People’s Hospital of Suzhou, Suzhou, China
| | - Yuan Zhu
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhe Chen
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chang She
- grid.452666.50000 0004 1762 8363Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Gang Chen
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Peng Cao
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiang-yang Xu
- grid.16821.3c0000 0004 0368 8293Department of Orthopedics, Ruijin Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
12
|
Mao L, Guo J, Hu L, Li L, Xu J, Zou J. The effects of biophysical stimulation on osteogenic differentiation and the mechanisms from ncRNAs. Cell Biochem Funct 2021; 39:727-739. [PMID: 34041775 DOI: 10.1002/cbf.3650] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Revised: 05/07/2021] [Accepted: 05/10/2021] [Indexed: 01/02/2023]
Abstract
Ample proof showed that non-coding RNAs (ncRNAs) play a crucial role in proliferation and differentiation of osteoblasts and bone marrow stromal cells (BMSCs). Varied forms of biophysical stimuli like mechanical strain, fluid shear stress (FSS), microgravity and vibration are verified to regulate ncRNAs expression in osteogenic differentiation and influence the expression of target genes associated with osteogenic differentiation and ultimately regulate bone formation. The consequences of biophysical stimulation on osteogenic differentiation validate the prospect of exercise for the prevention and treatment of osteoporosis. In this review, we tend to summarize the studies on regulation of osteogenic differentiation by ncRNAs beneath biophysical stimulation and facilitate to reveal the regulatory mechanism of biophysical stimulation on ncRNAs, and provide an update for the prevention of bone metabolism diseases by exercise.
Collapse
Affiliation(s)
- Liwei Mao
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Jianmin Guo
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Linghui Hu
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Lexuan Li
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| | - Jiake Xu
- School of Biomedical Sciences, The University of Western Australia, Perth, Western Australia, Australia
| | - Jun Zou
- School of Kinesiology, Shanghai University of Sport, Shanghai, China
| |
Collapse
|
13
|
Povoroznyuk VV, Dedukh NV, Bystrytska MA, Shapovalov VS. Bone remodeling stages under physiological conditions and glucocorticoid in excess: Focus on cellular and molecular mechanisms. REGULATORY MECHANISMS IN BIOSYSTEMS 2021. [DOI: 10.15421/022130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
This review provides a rationale for the cellular and molecular mechanisms of bone remodeling stages under physiological conditions and glucocorticoids (GCs) in excess. Remodeling is a synchronous process involving bone resorption and formation, proceeding through stages of: (1) resting bone, (2) activation, (3) bone resorption, (4) reversal, (5) formation, (6) termination. Bone remodeling is strictly controlled by local and systemic regulatory signaling molecules. This review presents current data on the interaction of osteoclasts, osteoblasts and osteocytes in bone remodeling and defines the role of osteoprogenitor cells located above the resorption area in the form of canopies and populating resorption cavities. The signaling pathways of proliferation, differentiation, viability, and cell death during remodeling are presented. The study of signaling pathways is critical to understanding bone remodeling under normal and pathological conditions. The main signaling pathways that control bone resorption and formation are RANK / RANKL / OPG; M-CSF – c-FMS; canonical and non-canonical signaling pathways Wnt; Notch; MARK; TGFβ / SMAD; ephrinB1/ephrinB2 – EphB4, TNFα – TNFβ, and Bim – Bax/Bak. Cytokines, growth factors, prostaglandins, parathyroid hormone, vitamin D, calcitonin, and estrogens also act as regulators of bone remodeling. The role of non-encoding microRNAs and long RNAs in the process of bone cell differentiation has been established. MicroRNAs affect many target genes, have both a repressive effect on bone formation and activate osteoblast differentiation in different ways. Excess of glucocorticoids negatively affects all stages of bone remodeling, disrupts molecular signaling, induces apoptosis of osteocytes and osteoblasts in different ways, and increases the life cycle of osteoclasts. Glucocorticoids disrupt the reversal stage, which is critical for the subsequent stages of remodeling. Negative effects of GCs on signaling molecules of the canonical Wingless (WNT)/β-catenin pathway and other signaling pathways impair osteoblastogenesis. Under the influence of excess glucocorticoids biosynthesis of biologically active growth factors is reduced, which leads to a decrease in the expression by osteoblasts of molecules that form the osteoid. Glucocorticoids stimulate the expression of mineralization inhibitor proteins, osteoid mineralization is delayed, which is accompanied by increased local matrix demineralization. Although many signaling pathways involved in bone resorption and formation have been discovered and described, the temporal and spatial mechanisms of their sequential turn-on and turn-off in cell proliferation and differentiation require additional research.
Collapse
|
14
|
Shan HJ, Zhu LQ, Yao C, Zhang ZQ, Liu YY, Jiang Q, Zhou XZ, Wang XD, Cao C. MAFG-driven osteosarcoma cell progression is inhibited by a novel miRNA miR-4660. MOLECULAR THERAPY-NUCLEIC ACIDS 2021; 24:385-402. [PMID: 33868783 PMCID: PMC8039776 DOI: 10.1016/j.omtn.2021.03.006] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/11/2020] [Accepted: 03/10/2021] [Indexed: 12/23/2022]
Abstract
Osteosarcoma (OS) is the most common primary bone malignancy in the adolescent population. MAFG (v-maf avian musculoaponeurotic fibrosarcoma oncogene homolog G) forms a heterodimer with Nrf2 (NF-E2-related factor 2), binding to antioxidant response element (ARE), which is required for Nrf2 signaling activation. We found that MAFG mRNA and protein expression is significantly elevated in human OS tissues as well as in established and primary human OS cells. In human OS cells, MAGF silencing or knockout (KO) largely inhibited OS cell growth, proliferation, and migration, simultaneously inducing oxidative injury and apoptosis activation. Conversely, ectopic overexpression of MAFG augmented OS cell progression in vitro. MicroRNA-4660 (miR-4660) directly binds the 3′ untranslated region (UTR) of MAFG mRNA in the cytoplasm of OS cells. MAFG 3′ UTR luciferase activity and expression as well as OS cell growth were largely inhibited with forced miR-4660 overexpression but augmented with miR-4660 inhibition. In vivo, MAGF short hairpin RNA (shRNA) or forced overexpression of miR-4660 inhibited subcutaneous OS xenograft growth in severe combined immunodeficient mice. Furthermore, MAFG silencing or miR-4660 overexpression inhibited OS xenograft in situ growth in proximal tibia of the nude mice. In summary, MAFG overexpression-driven OS cell progression is inhibited by miR-4660. The miR-4660-MAFG axis could be novel therapeutic target for human OS.
Collapse
Affiliation(s)
- Hua-Jian Shan
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou 215003, China
| | - Lun-Qing Zhu
- Department of Pediatric Orthopedics, The Children's Hospital of Soochow University, Suzhou 215100, China
| | - Chen Yao
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Jiangsu Province Hospital of TCM, Nanjing, China
| | - Zhi-Qing Zhang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou 215123, China
| | - Yuan-Yuan Liu
- Department of Radiotherapy and Oncology, Kunshan First People's Hospital Affiliated to Jiangsu University, Kunshan, China
| | - Qin Jiang
- The Affiliated Eye Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Xiao-Zhong Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou 215003, China
| | - Xiao-Dong Wang
- Department of Pediatric Orthopedics, The Children's Hospital of Soochow University, Suzhou 215100, China
| | - Cong Cao
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou 215123, China.,The Affiliated Suzhou Hospital of Nanjing Medical University, Suzhou Municipal Hospital, Suzhou, China
| |
Collapse
|
15
|
Xu C, Luo Y, Ntim M, Quan W, Li Z, Xu Q, Jiang L, Zhang J, Shang D, Li L, Zhang G, Chen H. Effect of emodin on long non-coding RNA-mRNA networks in rats with severe acute pancreatitis-induced acute lung injury. J Cell Mol Med 2021; 25:1851-1866. [PMID: 33438315 PMCID: PMC7882958 DOI: 10.1111/jcmm.15525] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2020] [Revised: 05/11/2020] [Accepted: 05/24/2020] [Indexed: 12/13/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) contribute to disease pathogenesis and drug treatment effects. Both emodin and dexamethasone (DEX) have been used for treating severe acute pancreatitis-associated acute lung injury (SAP-ALI). However, lncRNA regulation networks related to SAP-ALI pathogenesis and drug treatment are unreported. In this study, lncRNAs and mRNAs in the lung tissue of SAP-ALI and control rats, with or without drug treatment (emodin or DEX), were assessed by RNA sequencing. Results showed both emodin and DEX were therapeutic for SAP-ALI and that mRNA and lncRNA levels differed between untreated and treated SAP-ALI rats. Gene expression profile relationships for emodin-treated and control rats were higher than DEX-treated and -untreated animals. By comparison of control and SAP-ALI animals, more up-regulated than down-regulated mRNAs and lncRNAs were observed with emodin treatment. For DEX treatment, more down-regulated than up-regulated mRNAs and lncRNAs were observed. Functional analysis demonstrated both up-regulated mRNA and co-expressed genes with up-regulated lncRNAs were enriched in inflammatory and immune response pathways. Further, emodin-associated lncRNAs and mRNAs co-expressed modules were different from those associated with DEX. Quantitative polymerase chain reaction demonstrates selected lncRNA and mRNA co-expressed modules were different in the lung tissue of emodin- and DEX-treated rats. Also, emodin had different effects compared with DEX on co-expression network of lncRNAs Rn60_7_1164.1 and AABR07062477.2 for the blue lncRNA module and Nrp1 for the green mRNA module. In conclusion, this study provides evidence that emodin may be a suitable alternative or complementary medicine for treating SAP-ALI.
Collapse
Affiliation(s)
- Caiming Xu
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China.,Institute (College) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Yalan Luo
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China.,Institute (College) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Michael Ntim
- Department of Physiology, Dalian Medical University, Dalian, China
| | - Weili Quan
- Center for Genome Analysis, ABLife Inc, Wuhan, China
| | - Zhaoxia Li
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China.,Institute (College) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Qiushi Xu
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China.,Institute (College) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Liu Jiang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China.,Institute (College) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Jingwen Zhang
- Endoscopy Center, The First Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Dong Shang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China.,Institute (College) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Lei Li
- Department of Vascular Surgery, The Second Affiliated Hospital of Dalian Medical University, Dalian, China
| | - Guixin Zhang
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China.,Institute (College) of Integrative Medicine, Dalian Medical University, Dalian, China
| | - Hailong Chen
- Department of General Surgery, The First Affiliated Hospital of Dalian Medical University, Dalian, China.,Institute (College) of Integrative Medicine, Dalian Medical University, Dalian, China
| |
Collapse
|
16
|
Hou Y, Jia H, Cao Y, Zhang S, Zhang X, Wei P, Xie J, Dong W, Wang B. LncRNA EPIC1 promotes tumor angiogenesis via activating the Ang2/Tie2 axis in non-small cell lung cancer. Life Sci 2020; 267:118933. [PMID: 33359744 DOI: 10.1016/j.lfs.2020.118933] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 12/08/2020] [Accepted: 12/16/2020] [Indexed: 12/20/2022]
Abstract
AIMS Non-small cell lung cancer (NSCLC) is considered a highly fatal tumor. Importantly, angiogenesis is critical for tumor progression. Long non-coding RNAs (lncRNAs), which are untranslatable, control cell functions through different pathways. lncRNA EPIC1 has been reported to promote cell viability, cell cycle progression, and invasion. However, the relationship between EPIC1 and tumor angiogenesis remains an enigma. We explored the role of EPIC1 in tumor angiogenesis in NSCLC. MATERIALS AND METHODS First, EPIC1 expression was analyzed using the GEPIA database and was further verified using qPCR in tumor tissues from patients with NSCLC and NSCLC cell lines. Next, EPIC1 function was detected using loss-of-function and gain-of-function assays. Moreover, EdU staining, flow cytometry, and channel formation assays were performed to assess HUVEC proliferation and channel the formation in the NSCLC-HUVEC transwell co-culture system. KEY FINDINGS EPIC1 expression was significantly upregulated in NSCLC tissues and cell lines. Furthermore, the overexpression of EPIC1 in NSCLC cells stimulated HUVEC channel formation and proliferation by activating Ang2/Tie2 signaling, and the opposite results were obtained when EPIC1 was silenced in NSCLC cells. The density of new blood vessels was simultaneously increased by EPIC1 overexpression in vivo, using CAM angiogenesis model and a nude mouse tumor model. Finally, all these experimental findings could be established in the samples from patients with NSCLC. We postulate that EPIC1 promotes tumor angiogenesis by activating the Ang2/Tie2 axis in NSCLC. SIGNIFICANCE Elucidating the molecular and cellular mechanisms of EPIC1 in tumor angiogenesis provides a novel perspective on NSCLC clinical therapy.
Collapse
MESH Headings
- Angiopoietin-2/genetics
- Angiopoietin-2/metabolism
- Animals
- Carcinoma, Non-Small-Cell Lung/blood supply
- Carcinoma, Non-Small-Cell Lung/genetics
- Carcinoma, Non-Small-Cell Lung/metabolism
- Carcinoma, Non-Small-Cell Lung/pathology
- Cell Line, Tumor
- Cell Proliferation/physiology
- Cell Survival/physiology
- Chick Embryo
- Databases, Genetic
- Disease Models, Animal
- Heterografts
- Human Umbilical Vein Endothelial Cells
- Humans
- Lung Neoplasms/blood supply
- Lung Neoplasms/genetics
- Lung Neoplasms/metabolism
- Lung Neoplasms/pathology
- Male
- Mice
- Mice, Inbred BALB C
- Mice, Nude
- Neovascularization, Pathologic/genetics
- Neovascularization, Pathologic/pathology
- RNA, Long Noncoding/genetics
- RNA, Long Noncoding/metabolism
- Receptor, TIE-2/genetics
- Receptor, TIE-2/metabolism
- Signal Transduction
Collapse
Affiliation(s)
- Yanjiao Hou
- School of Medicine, Cheeloo College of Medicine, Shandong University, Jinan, Shandong 250012, China; Department of Clinical Laboratory, Dezhou People's Hospital, 1166 Dongfanghong Road, Decheng District, Dezhou, Shandong 253000, China
| | - Hengmin Jia
- Department of Clinical Laboratory, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Yanhong Cao
- Department of Clinical Laboratory, the Affliated Anhui Provincial Hospital of Anhui Medical University, Hefei, Anhui 230000, China
| | - Shuang Zhang
- Department of Clinical Laboratory, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Xiaolei Zhang
- Department of Clinical Laboratory, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Pingping Wei
- Department of Clinical Laboratory, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Jun Xie
- Department of Clinical Laboratory, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China
| | - Wenqian Dong
- Department of Clinical Laboratory, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China.
| | - Baolong Wang
- Department of Clinical Laboratory, the First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei 230001, China.
| |
Collapse
|
17
|
Patil S, Dang K, Zhao X, Gao Y, Qian A. Role of LncRNAs and CircRNAs in Bone Metabolism and Osteoporosis. Front Genet 2020; 11:584118. [PMID: 33281877 PMCID: PMC7691603 DOI: 10.3389/fgene.2020.584118] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 09/30/2020] [Indexed: 02/06/2023] Open
Abstract
Bone is a mechanosensitive organ that provides strength and support. Many bone cells, various pathways, and signaling molecules coordinate bone metabolism and also determine the course of bone diseases, such as osteoporosis, osteonecrosis, osteopenia, etc. Osteoporosis is caused by increased bone resorption and reduced bone formation due to the changes in the level of different proteins and RNAs in osteoclast or/and osteoblasts. The available therapeutic interventions can significantly reduce bone resorption or enhance bone formation, but their prolonged use has deleterious side effects. Therefore, the use of non-coding RNAs as therapeutics has emerged as an interesting field of research. Despite advancements in the molecular field, not much is known about the role of long non-coding RNAs (lncRNAs) and circular RNAs (circRNAs) in bone homeostasis and osteoporosis. Therefore, in this article, we summarize the role of lncRNAs and circRNAs in different bone cells and osteoporosis so that it might help in the development of osteoporotic therapeutics.
Collapse
Affiliation(s)
- Suryaji Patil
- Lab for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Lab for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Kai Dang
- Lab for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Lab for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| | - Xin Zhao
- School of Pharmacy, Shaanxi Institute of International Trade & Commerce, Xi'an, China
| | - Yongguang Gao
- Lab for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Lab for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China.,Department of Chemistry, Tangshan Normal University, Tangshan, China
| | - Airong Qian
- Lab for Bone Metabolism, Xi'an Key Laboratory of Special Medicine and Health Engineering, Key Lab for Space Biosciences and Biotechnology, Research Center for Special Medicine and Health Systems Engineering, NPU-UAB Joint Laboratory for Bone Metabolism, School of Life Sciences, Northwestern Polytechnical University, Xi'an, China
| |
Collapse
|
18
|
Wu Q, Wei J, Zhao C, Xiang S, Shi M, Wang Y. Targeting LncRNA EPIC1 to inhibit human colon cancer cell progression. Aging (Albany NY) 2020; 15:583-594. [PMID: 33170148 PMCID: PMC9925677 DOI: 10.18632/aging.103790] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 06/09/2020] [Indexed: 02/07/2023]
Abstract
Long non-coding RNA EPIC1 (Lnc-EPIC1) binds MYC protein, which is essential for MYC function and expression of MYC target genes. The current study tested its expression and potential functions in human colon cancer cells. We show that Lnc-EPIC1 expression is elevated in human colon cancer tissues and primary human colon cancer cells. Whereas its expression is relatively low in normal colon tissues and colon epithelial cells. In the primary human colon cancer cells, Lnc-EPIC1 siRNA largely inhibited cancer cell growth, proliferation, migration and invasion. Further, Lnc-EPIC1 silencing induced significant apoptosis activation in colon cancer cells. Conversely, ectopic overexpression of Lnc-EPIC1 augmented colon cancer cell growth, proliferation, migration and invasion. RNA-immunoprecipitation and RNA pull-down results confirmed that Lnc-EPIC1 directly binds MYC protein in colon cancer cells. MYC target proteins, including cyclin A, cyclin D and CDK9, were downregulated with Lnc-EPIC1 silencing, but upregulated after Lnc-EPIC1 overexpression in colon cancer cells. Further Lnc-EPIC1 silencing or overexpression failed to alter functions of MYC-knockout colon cancer cells. Collectively, overexpressed Lnc-EPIC1 is important for the progression of human colon cancer cells.
Collapse
Affiliation(s)
- Qiong Wu
- Department of Gastroenterology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jue Wei
- Department of Gastroenterology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chen Zhao
- Department of Gastroenterology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shihao Xiang
- Department of Gastroenterology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Min Shi
- Department of Gastroenterology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yugang Wang
- Department of Gastroenterology, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| |
Collapse
|
19
|
FGF23 protects osteoblasts from dexamethasone-induced oxidative injury. Aging (Albany NY) 2020; 12:19045-19059. [PMID: 33052883 PMCID: PMC7732311 DOI: 10.18632/aging.103689] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 06/10/2020] [Indexed: 02/07/2023]
Abstract
Dexamethasone (DEX) can exert a cytotoxic effect on cultured osteoblasts. The current study explored the potential osteoblast cytoprotective effect of fibroblast growth factor 23 (FGF23). In OB-6 human osteoblastic cells and primary murine osteoblasts, FGF23 induced phosphorylation of the receptor FGFR1 and activated the downstream Akt-S6K1 signaling. FGF23-induced FGFR1-Akt-S6K phosphorylation was largely inhibited by FGFR1 shRNA, but augmented with ectopic FGFR1 expression in OB-6 cells. FGF23 attenuated DEX-induced death and apoptosis in OB-6 cells and murine osteoblasts. Its cytoprotective effects were abolished by FGFR1 shRNA, Akt inhibition or Akt1 knockout. Conversely, forced activation of Akt inhibited DEX-induced cytotoxicity in OB-6 cells. Furthermore, FGF23 activated Akt downstream nuclear-factor-E2-related factor 2 (Nrf2) signaling to alleviate DEX-induced oxidative injury. On the contrary, Nrf2 shRNA or knockout almost reversed FGF23-induced osteoblast cytoprotection against DEX. Collectively, FGF23 activates FGFR1-Akt and Nrf2 signaling cascades to protect osteoblasts from DEX-induced oxidative injury and cell death.
Collapse
|
20
|
Shi C, Cheng WN, Wang Y, Li DZ, Zhou LN, Zhu YC, Zhou XZ. p38γ overexpression promotes osteosarcoma cell progression. Aging (Albany NY) 2020; 12:18384-18395. [PMID: 32970611 PMCID: PMC7585114 DOI: 10.18632/aging.103708] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 06/29/2020] [Indexed: 01/24/2023]
Abstract
Osteosarcoma (OS) is the most common primary bone malignancy in the adolescent population. Recent studies demonstrate that p38 gamma (p38γ) phosphorylates retinoblastoma (Rb) to promote cyclin expression, cell-cycle entry and tumorigenesis. Studying the potential function of p38γ in human OS, we show that p38γ mRNA and protein expression are significantly elevated in OS tissues and OS cells, whereas its expression is relatively low in normal bone tissue and in human osteoblasts/osteoblastic cells. Knockdown of p38γ in established (U2OS) and primary human OS cells potently inhibited cell growth, proliferation, migration and invasion, while promoting cell apoptosis. Furthermore, CRISPR/Cas9-induced p38γ knockout inhibited human OS cell progression in vitro. Conversely, ectopic overexpression of p38γ in primary human OS cells augmented cell growth, proliferation and migration. Signaling studies show that retinoblastoma (Rb) phosphorylation and cyclin E1/cyclin A expression were decreased following p38γ shRNA knockdown and knockout, but increased after ectopic p38γ overexpression. Collectively, these results show that p38γ overexpression promotes human OS cell progression.
Collapse
Affiliation(s)
- Ce Shi
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, China,Department of Orthopedics, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China
| | - Wei-Nan Cheng
- Department of Orthopedics, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Yin Wang
- Jiangsu Key Laboratory of Neuropsychiatric Diseases and Institute of Neuroscience, Soochow University, Suzhou, China
| | - Da-Zhuang Li
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, China
| | - Li-Na Zhou
- Department of Radiotherapy and Oncology, Affiliated Kunshan Hospital of Jiangsu University, Kunshan, China
| | - Yu-Cheng Zhu
- Department of Orthopedics, The Affiliated Suqian Hospital of Xuzhou Medical University, Suqian, China
| | - Xiao-Zhong Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, China
| |
Collapse
|
21
|
Four-octyl itaconate activates Nrf2 cascade to protect osteoblasts from hydrogen peroxide-induced oxidative injury. Cell Death Dis 2020; 11:772. [PMID: 32943614 PMCID: PMC7499214 DOI: 10.1038/s41419-020-02987-9] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2020] [Revised: 09/02/2020] [Accepted: 09/04/2020] [Indexed: 02/07/2023]
Abstract
Four-octyl itaconate (4-OI) is the cell-permeable derivative of itaconate that can activate Nrf2 signaling by alkylating Keap1’s cysteine residues. Here, we tested the potential effect of 4-OI on hydrogen peroxide (H2O2)-induced oxidative injury in osteoblasts. In OB-6 cells and primary murine osteoblasts, 4-OI was able to activate Nrf2 signaling cascade and cause Keap1–Nrf2 disassociation, Nrf2 protein stabilization, cytosol accumulation, and nuclear translocation. 4-OI also augmented antioxidant-response element reporter activity and promoted expression of Nrf2-dependent genes (HO1, NQO1, and GCLC). Pretreatment with 4-OI inhibited H2O2-induced reactive oxygen species production, cell death, and apoptosis in osteoblasts. Furthermore, 4-OI inhibited H2O2-induced programmed necrosis by suppressing mitochondrial depolarization, mitochondrial cyclophilin D-ANT1 (adenine nucleotide translocase 1)-p53 association, and cytosol lactate dehydrogenase release in osteoblasts. Ectopic overexpression of immunoresponsive gene 1 (IRG1) increased endogenous itaconate production and activated Nrf2 signaling cascade, thereby inhibiting H2O2-induced oxidative injury and cell death. In OB-6 cells, Nrf2 silencing or CRISPR/Cas9-induced Nrf2 knockout blocked 4-OI-induced osteoblast cytoprotection against H2O2. Conversely, forced Nrf2 activation, by CRISPR/Cas9-induced Keap1 knockout, mimicked 4-OI-induced actions in OB-6 cells. Importantly, 4-OI was ineffective against H2O2 in Keap1-knockout cells. Collectively, 4-OI efficiently activates Nrf2 signaling to inhibit H2O2-induced oxidative injury and death of osteoblasts.
Collapse
|
22
|
Cao C, Deng F, Hu Y. Dexmedetomidine alleviates postoperative cognitive dysfunction through circular RNA in aged rats. 3 Biotech 2020; 10:176. [PMID: 32226705 PMCID: PMC7093639 DOI: 10.1007/s13205-020-2163-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2020] [Accepted: 03/07/2020] [Indexed: 12/16/2022] Open
Abstract
Circular RNA (circRNA) has been well studied in many diseases, whereas their role in patients with postoperative cognitive dysfunction (POCD) remains largely unclear. Here, we investigated the therapeutic effects of dexmedetomidine (Dex) on POCD and analyzed the role of circRNA as well as the pathways that may be involved. The Morris water maze test demonstrated that POCD rats have a longer incubation period than the normal group, but the latency of POCD rats was significantly lower after Dex treatment. Moreover, HE staining showed that Dex improved hippocampal pathological changes. RNA sequencing showed 164 differentially expressed circRNAs between POCD and Dex groups; 74 were upregulated and 90 were downregulated in the Dex group. A total of 20,790 target genes for differentially expressed circRNAs were observed in RNAhybrid and Miranda databases. Gene ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses showed that the target genes of differentially expressed circRNAs are mainly focused on positive regulation of intrinsic apoptotic signaling pathway in response to DNA damage, negative regulation of cell adhesion mediated by integrin, and response to cytokines and other function of life activities and involved in the P53 signaling pathway and nuclear factor kappa B (NF-κB) signaling pathway. Furthermore, the expression of five candidate circRNAs (circ-Shank3, circ-Cdc42bpa, circ-chrx-24658, cir-chr17-3642 and circ-Sgsm1) and target genes were consistent with the RNA sequencing results, which was verified by quantitative real-time polymerase chain reaction (qRT-PCR). These results indicate that circ-Shank3 participate in the process of Dex improved POCD through regulating the P53 and NF-κB signaling pathways and may potentially facilitate POCD treatment through the development of clinical drugs.
Collapse
Affiliation(s)
- Cao Cao
- Department of Anesthesiology, Donghu District, The Second Affiliated Hospital of Nanchang University, No. 1 Minde Road, Nanchang, 330006 Jiangxi China
| | - Fumou Deng
- Department of Anesthesiology, Donghu District, The Second Affiliated Hospital of Nanchang University, No. 1 Minde Road, Nanchang, 330006 Jiangxi China
| | - Yanhui Hu
- Department of Anesthesiology, Donghu District, The Second Affiliated Hospital of Nanchang University, No. 1 Minde Road, Nanchang, 330006 Jiangxi China
| |
Collapse
|
23
|
Noncoding RNAs in Steroid-Induced Osteonecrosis of the Femoral Head. BIOMED RESEARCH INTERNATIONAL 2019; 2019:8140595. [PMID: 31930139 PMCID: PMC6942769 DOI: 10.1155/2019/8140595] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 11/17/2019] [Accepted: 12/03/2019] [Indexed: 12/12/2022]
Abstract
Steroid-induced osteonecrosis of the femoral head (ONFH) is a severe orthopedic disease caused by the long-term administration of glucocorticoids. The main pathological feature of ONFH is the gradually progressive necrosis of bone cells and the bone marrow, ultimately resulting in structural changes or even complete collapse of the femoral head. However, the exact pathogenic mechanism of ONFH remains unknown. Noncoding RNAs (ncRNAs) have emerged as very powerful regulators of gene expression, functioning at both transcriptional and posttranscriptional levels in the pathogenesis of ONFH. Here, we review the current knowledge of the role of ncRNAs, including microRNAs, long noncoding RNAs, and circular RNAs, in the pathogenesis of steroid-induced ONFH. Further focus and validation of these associations can provide new insight into the pathogenic mechanisms at the molecular level to suggest targets for treatment and prevention.
Collapse
|
24
|
LncRNA EPIC1 downregulation mediates hydrogen peroxide-induced neuronal cell injury. Aging (Albany NY) 2019; 11:11463-11473. [PMID: 31812951 PMCID: PMC6932932 DOI: 10.18632/aging.102545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 11/19/2019] [Indexed: 12/13/2022]
Abstract
Excessive oxidative stress causes neuronal cell injury. Long non-coding RNA (LncRNA) EPIC1 (Lnc-EPIC1) is a MYC-interacting LncRNA. Its expression and potential functions in hydrogen peroxide (H2O2)-stimulated neuronal cells are studied. In SH-SY5Y neuronal cells and primary human neuron cultures, H2O2 downregulated Lnc-EPIC1 and key MYC targets (Cyclin A1, CDC20 and CDC45). Ectopic overexpression of Lnc-EPIC1 increased expression of MYC targets and significantly attenuated H2O2-induced neuronal cell death and apoptosis. Contrarily, Lnc-EPIC1 siRNA potentiated neuronal cell death by H2O2. MYC knockout by CRISPR/Cas9 method also facilitated H2O2-induced SH-SY5Y cell death. Significantly, MYC knockout abolished Lnc-EPIC1-induced actions in H2O2-stimulated neuronal cells. Together, these results suggest that Lnc-EPIC1 downregulation mediates H2O2-induced neuronal cell death.
Collapse
|
25
|
Liang J, Zhang XY, Zhen YF, Chen C, Tan H, Hu J, Tan MS. PGK1 depletion activates Nrf2 signaling to protect human osteoblasts from dexamethasone. Cell Death Dis 2019; 10:888. [PMID: 31767834 PMCID: PMC6877585 DOI: 10.1038/s41419-019-2112-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2019] [Revised: 10/24/2019] [Accepted: 10/31/2019] [Indexed: 12/22/2022]
Abstract
Activation of nuclear-factor-E2-related factor 2 (Nrf2) cascade can alleviate dexamethasone (DEX)-induced oxidative injury and death of human osteoblasts. A recent study has shown that phosphoglycerate kinase 1 (PGK1) inhibition/depletion will lead to Kelch-like ECH-associated protein 1 (Keap1) methylglyoxal modification, thereby activating Nrf2 signaling cascade. Here, in OB-6 osteoblastic cells and primary human osteoblasts, PGK1 silencing, by targeted shRNA, induced Nrf2 signaling cascade activation, causing Nrf2 protein stabilization and nuclear translocation, as well as increased expression of ARE-dependent genes (HO1, NQO1, and GCLC). Functional studies demonstrated that PGK1 shRNA largely attenuated DEX-induced oxidative injury and following death of OB-6 cells and primary osteoblasts. Furthermore, PGK1 knockout, by the CRISPR/Cas9 method, similarly induced Nrf2 signaling activation and protected osteoblasts from DEX. Importantly, PGK1 depletion-induced osteoblast cytoprotection against DEX was almost abolished by Nrf2 shRNA. In addition, Keap1 shRNA mimicked and nullified PGK1 shRNA-induced anti-DEX osteoblast cytoprotection. At last we show that PGK1 expression is downregulated in human necrotic femoral head tissues of DEX-taking patients, correlating with HO1 depletion. Collectively, these results show that PGK1 depletion protects human osteoblasts from DEX via activation of Keap1-Nrf2 signaling cascade.
Collapse
Affiliation(s)
- Jinqian Liang
- Department of Orthopaedics, Peking Union Medical College Hospital, Beijing, China
| | - Xiang-Yang Zhang
- Department of Orthopaedics, Tongren Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yun-Fang Zhen
- The Center of Diagnosis and Treatment for Children's Bone Diseases, The Children's Hospital of Soochow University, Suzhou, China
| | - Chong Chen
- Department of Orthopaedics, Peking Union Medical College Hospital, Beijing, China
| | - Haining Tan
- Department of Orthopaedics, Peking Union Medical College Hospital, Beijing, China
| | - Jianhua Hu
- Department of Orthopaedics, Peking Union Medical College Hospital, Beijing, China.
| | - Ming-Sheng Tan
- Spinal Surgery, Sino-Japanese Friendship Hospital, Beijing, China.
| |
Collapse
|
26
|
Hong H, Sun Y, Deng H, Yuan K, Chen J, Liu W, Cui Z. Dysregulation of cPWWP2A-miR-579 axis mediates dexamethasone-induced cytotoxicity in human osteoblasts. Biochem Biophys Res Commun 2019; 517:491-498. [PMID: 31376935 DOI: 10.1016/j.bbrc.2019.07.095] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2019] [Accepted: 07/24/2019] [Indexed: 12/24/2022]
Abstract
Dexamethasone (DEX) induces significant cytotoxicity to human osteoblasts. cPWWP2A is recently-indentified novel circular RNA (circRNA), acting as an endogenous sponge of microRNA-579 (miR-579). The present study tested the expression and potential functions of the cPWWP2A-miR-579 axis in DEX-treated osteoblasts. We show that cPWWP2A is downregulated in the necrotic femoral head tissues of DEX-taking human patients as well as in DEX-treated human osteoblasts. In OB-6 osteoblastic cells and primary human osteoblasts ectopic overexpression of cPWWP2A potently inhibited DEX-induced miR-579 accumulation, cell death, apoptosis and programmed necrosis. Silencing miR-579, by targeted siRNAs, also attenuated DEX-induced cytotoxicity in human osteoblasts. Significantly, mimicking DEX-induced actions, cPWWP2A silencing or forced miR-579 overexpression induced significant cytotoxicity in human osteoblasts. Further analyses demonstrated that miR-579's targets, including SIRT1 and PDK1 (phosphoinositide-dependent protein kinase 1), were downregulated in DEX-treated osteoblasts. Their levels were decreased as well in the necrotic femoral head tissues of DEX-taking human patients. Taken together we show that dysregulation of the cPWWP2A-miR-579 axis is involved in DEX-induced cytotoxicity in human osteoblasts.
Collapse
MESH Headings
- Apoptosis/drug effects
- Apoptosis/genetics
- Base Sequence
- Cell Line
- Chromosomal Proteins, Non-Histone/antagonists & inhibitors
- Chromosomal Proteins, Non-Histone/genetics
- Chromosomal Proteins, Non-Histone/metabolism
- Dexamethasone/toxicity
- Femur/drug effects
- Femur/metabolism
- Femur/pathology
- Gene Expression Regulation
- Humans
- MicroRNAs/genetics
- MicroRNAs/metabolism
- Necrosis/chemically induced
- Necrosis/genetics
- Necrosis/metabolism
- Necrosis/pathology
- Osteoblasts/drug effects
- Osteoblasts/metabolism
- Osteoblasts/pathology
- Primary Cell Culture
- Pyruvate Dehydrogenase Acetyl-Transferring Kinase/genetics
- Pyruvate Dehydrogenase Acetyl-Transferring Kinase/metabolism
- RNA, Circular/antagonists & inhibitors
- RNA, Circular/genetics
- RNA, Circular/metabolism
- RNA, Small Interfering/genetics
- RNA, Small Interfering/metabolism
- RNA, Small Nuclear/genetics
- RNA, Small Nuclear/metabolism
- Signal Transduction
- Sirtuin 1/genetics
- Sirtuin 1/metabolism
Collapse
Affiliation(s)
- Hongxiang Hong
- Department of Orthopaedics, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Yuyu Sun
- Department of Orthopaedics, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Hongjian Deng
- Department of Orthopaedics, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Kun Yuan
- Department of Orthopaedics, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Jinyu Chen
- Department of Orthopaedics, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Wei Liu
- Department of Orthopaedics, The Second Affiliated Hospital of Nantong University, Nantong, China
| | - Zhiming Cui
- Department of Orthopaedics, The Second Affiliated Hospital of Nantong University, Nantong, China.
| |
Collapse
|
27
|
Zhu CY, Yao C, Zhu LQ, She C, Zhou XZ. Dexamethasone-induced cytotoxicity in human osteoblasts is associated with circular RNA HIPK3 downregulation. Biochem Biophys Res Commun 2019; 516:645-652. [PMID: 31242973 DOI: 10.1016/j.bbrc.2019.06.073] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2019] [Accepted: 06/15/2019] [Indexed: 10/26/2022]
Abstract
Dexamethasone (DEX) exerts potent cytotoxicity against cultured human osteoblasts. The current study examined the role of the circular RNA HIPK3 (circHIPK3) in the mechanism of cell death. We found that circHIPK3 expression was downregulated in DEX-treated human osteoblasts and circHIPK3 levels decreased in human necrotic femoral head tissues. In OB-6 osteoblastic cells and primary human osteoblasts ectopic overexpression of circHIPK3 potently suppressed DEX-induced apoptosis and programmed necrosis. Conversely, knockdown of circHIPK3by targeted siRNAs enhanced DEX-induced cytotoxicity in human osteoblasts. We further observed that microRNA-124 (miR-124), a key miRNA sponged by circHIPK3, accumulated following DEX treatment in OB-6 cells and primary osteoblasts. Confirming the role of miR-124 in DEX-induced cytotoxicity, miR-124 inhibitor attenuated cell death in human osteoblasts. Conversely, forced overexpression of miR-124 mimicked DEX-induced actions and induced cytotoxicity in human osteoblasts. We conclude that DEX-induced cytotoxicity in human osteoblasts is associated with circHIPK3 downregulation.
Collapse
Affiliation(s)
- Cong-Ya Zhu
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, China; Department of Orthopaedics, Yancheng No.1 People's Hospital, The Fourth Affiliated Hospital of Nantong University, Yancheng, China
| | - Chen Yao
- Department of Orthopedics, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing, China
| | - Lun-Qing Zhu
- The Center of Diagnosis and Treatment for Children's Bone Diseases, The Children's Hospital Affiliated to Soochow University, Suzhou, China
| | - Chang She
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, China.
| | - Xiao-Zhong Zhou
- Department of Orthopedics, The Second Affiliated Hospital of Soochow University, Suzhou, China.
| |
Collapse
|
28
|
Xing L, Zhang X, Feng H, Liu S, Li D, Hasegawa T, Guo J, Li M. Silencing FOXO1 attenuates dexamethasone-induced apoptosis in osteoblastic MC3T3-E1 cells. Biochem Biophys Res Commun 2019; 513:1019-1026. [PMID: 31010677 DOI: 10.1016/j.bbrc.2019.04.112] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Accepted: 04/15/2019] [Indexed: 12/12/2022]
Abstract
Dexamethasone (DEX), a widely used glucocorticoid with strong anti-inflammatory and immunosuppressive activities, has been reported to induce apoptosis in osteoblasts, but the underlying mechanisms are still not comprehensively investigated. FOXO1 plays an important role in the regulation of cell proliferation and apoptosis. Our study aims to explore the role of FOXO1 in DEX-induced apoptosis of osteoblastic MC3T3-E1 cells through bioinformatics and experiments. We first employed bioinformatics to identify DEX-related genes and revealed their functions by GO enrichment analysis including FOXO1 associated biological processes. Expression level of FOXO1 was validated by GEO data. Then, experiments were performed to verify the hypothesis. CCK8 was used to detect cell viability and apoptosis was detected by flow cytometry. SiRNA was used to silence FOXO1 and western-blot was employed to detect protein expression. Results demonstrated DEX-related genes involved in cell proliferation, apoptosis and angiogenesis and FOXO1 was a regulator of apoptosis. DEX could up-regulate FOXO1 expression, inhibit cell viability, promote apoptosis. SiRNA-FOXO1 could attenuate DEX-induced apoptosis in MC3T3-E1. These findings suggested DEX could affect some vital biological processes of MC3T3-E1 and FOXO1 played an essential role in DEX-induced apoptosis in MC3T3-E1.
Collapse
Affiliation(s)
- Lu Xing
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Bone Metabolism, School of Stomatology Shandong University, Jinan, 250012, China
| | - Xiaoqi Zhang
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Bone Metabolism, School of Stomatology Shandong University, Jinan, 250012, China
| | - Hao Feng
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Bone Metabolism, School of Stomatology Shandong University, Jinan, 250012, China
| | - Shanshan Liu
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Bone Metabolism, School of Stomatology Shandong University, Jinan, 250012, China
| | - Dongfang Li
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Bone Metabolism, School of Stomatology Shandong University, Jinan, 250012, China
| | - Tomoka Hasegawa
- Department of Developmental Biology of Hard Tissue, Graduate School of Dental Medicine, Hokkaido University, Sapporo, 060-8586, Japan
| | - Jie Guo
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Bone Metabolism, School of Stomatology Shandong University, Jinan, 250012, China
| | - Minqi Li
- Shandong Provincial Key Laboratory of Oral Tissue Regeneration, Department of Bone Metabolism, School of Stomatology Shandong University, Jinan, 250012, China.
| |
Collapse
|
29
|
Long non-coding RNA EPIC1 inhibits viability and invasion of osteosarcoma cells by promoting MEF2D ubiquitylation. Int J Biol Macromol 2019; 128:566-573. [PMID: 30703420 DOI: 10.1016/j.ijbiomac.2019.01.156] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2018] [Revised: 01/11/2019] [Accepted: 01/28/2019] [Indexed: 02/07/2023]
Abstract
BACKGROUND Long non-coding RNAs (lncRNAs) can modulate gene expression through different mechanisms, but the fundamental molecular mechanism behind EPIC1 and osteosarcoma (OS) was poorly understood. METHODS Bone tumor tissues and the matched normal tissues were obtained from 36 OS patients who received tumor resection from 2014 to 2018. The expression of EPIC1 and MEF2D was determined by quantitative real-Time PCR and western blotting. Cell viability and invasion were evaluated by MTT assay and transwell assay. The animal xenograft model was also established. RESULTS EPIC1 was down-regulated, but MEF2D was up-regulated in OS tissues and OS cell lines. Overexpression of EPIC1 inhibited cell viability and invasion of OS cells. Targeting relationship between EPIC1 and MEF2D was confirmed by RNA pull-down and RNA immunoprecipitation (RIP). The MEF2D protein binding to ubiquitin was significantly increased in OS cells overexpressing EPIC1. The co-transfection with pcDNA-EPIC1 and pcDNA-MEF2D rescued the inhibition of cell viability and invasion caused by the overexpression of EPIC1. Overexpression of EPIC1 suppressed tumor growth in the OS xenograft model. CONCLUSION Our findings indicated that overexpression of EPIC1 inhibited cell viability and invasion of OS cells by promoting MEF2D ubiquitylation, which provided innovative lncRNA and protein targets for treating OS.
Collapse
|