1
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Gu H, Pan Y, Xiao H, Zhao L, Tang Y, Ge W. Knockdown of LAP2α inhibits adipogenesis of human adipose-derived stem cells and ameliorates high-fat diet-induced obesity. FASEB J 2024; 38:e23664. [PMID: 38775797 DOI: 10.1096/fj.202302435rr] [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: 11/27/2023] [Revised: 04/17/2024] [Accepted: 04/29/2024] [Indexed: 05/30/2024]
Abstract
Adipogenesis, a pivotal cellular process involving the differentiation of mesenchymal stem cells (MSCs) to mature adipocytes, plays a significant role in various physiological functions. Dysregulation of adipogenesis is implicated in conditions such as obesity. However, the complete molecular understanding of adipogenesis remains elusive. This study aimed to uncover the novel role of lamina-associated polypeptide 2 alpha (LAP2α) in human adipose-derived stem cells (hASCs) adipogenesis and its impact on high-fat diet (HFD)-induced obesity and associated metabolic disturbances. LAP2α expression was assessed during the adipogenic differentiation of hASCs using RT-qPCR and western blotting. The functional role of LAP2α in adipogenesis was explored both in vitro and in vivo through loss- and gain-of-function studies. Moreover, mice with HFD-induced obesity received lentivirus injection to assess the effect of LAP2α knockdown on fat accumulation. Molecular mechanisms underlying LAP2α in adipogenic differentiation were investigated using RT-qPCR, Western blotting, immunofluorescence staining, and Oil Red O staining. LAP2α expression was upregulated during hASCs adipogenic differentiation. LAP2α knockdown hindered adipogenesis, while LAP2α overexpression promoted adipogenic differentiation. Notably, LAP2α deficiency resisted HFD-induced obesity, improved glucose intolerance, mitigated insulin resistance, and prevented fatty liver development. Mechanistically, LAP2α knockdown attenuated signal transducer and activator of transcription 3 (STAT3) activation by reducing the protein level of phosphorylated STAT3. A STAT3 activator (Colivelin) counteracted the negative impact of LAP2α deficiency on hASCs adipogenic differentiation. Taken together, our current study established LAP2α as a crucial regulator of hASCs adipogenic differentiation, unveiling a new therapeutic target for obesity prevention.
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Affiliation(s)
- Hang Gu
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
| | - Yuan Pan
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
| | - Han Xiao
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
| | - Lijun Zhao
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
| | - Yiman Tang
- Fourth Clinical Division, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
| | - Wenshu Ge
- Department of General Dentistry II, Peking University School and Hospital of Stomatology & National Center of Stomatology & National Clinical Research Center for Oral Diseases & National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing, P.R. China
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2
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Zhang P, Li B, Chen H, Ge Z, Shang Q, Liang D, Yu X, Ren H, Jiang X, Cui J. RNA sequencing-based approaches to identifying disulfidptosis-related diagnostic clusters and immune landscapes in osteoporosis. Aging (Albany NY) 2024; 16:8198-8216. [PMID: 38738994 PMCID: PMC11131997 DOI: 10.18632/aging.205813] [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: 10/09/2023] [Accepted: 04/08/2024] [Indexed: 05/14/2024]
Abstract
Disulfidptosis, a newly recognized cell death triggered by disulfide stress, has garnered attention for its potential role in osteoporosis (OP) pathogenesis. Although sulfide-related proteins are reported to regulate the balance of bone metabolism in OP, the precise involvement of disulfidptosis regulators remains elusive. Herein, leveraging the GSE56815 dataset, we conducted an analysis to delineate disulfidptosis-associated diagnostic clusters and immune landscapes in OP. Subsequently, vertebral bone tissues obtained from OP patients and controls were subjected to RNA sequencing (RNA-seq) for the validation of key disulfidptosis gene expression. Our analysis unveiled seven significant disulfidptosis regulators, including FLNA, ACTB, PRDX1, SLC7A11, NUBPL, OXSM, and RAC1, distinguishing OP samples from controls. Furthermore, employing a random forest model, we identified four diagnostic disulfidptosis regulators including FLNA, SLC7A11, NUBPL, and RAC1 potentially predictive of OP risk. A nomogram model integrating these four regulators was constructed and validated using the GSE35956 dataset, demonstrating promising utility in clinical decision-making, as affirmed by decision curve analysis. Subsequent consensus clustering analysis stratified OP samples into two different disulfidptosis subgroups (clusters A and B) using significant disulfidptosis regulators, with cluster B exhibiting higher disulfidptosis scores and implicating monocyte immunity, closely linked to osteoclastogenesis. Notably, RNA-seq analysis corroborated the expression patterns of two disulfidptosis modulators, PRDX1 and OXSM, consistent with bioinformatics predictions. Collectively, our study sheds light on disulfidptosis patterns, offering potential markers and immunotherapeutic avenues for future OP management.
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Affiliation(s)
- Peng Zhang
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Bing Li
- The First Affiliated Hospital of Guangxi University of Chinese Medicine, Nanning 530023, China
| | - Honglin Chen
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Zhilin Ge
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Qi Shang
- Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - De Liang
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Xiang Yu
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
| | - Hui Ren
- The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, China
| | - Xiaobing Jiang
- The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260, China
| | - Jianchao Cui
- The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou 510405, China
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3
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Jiang Y, Zhu Y, Shao Y, Yang K, Zhu L, Liu Y, Zhang P, Zhang X, Zhou Y. Platelet-Derived Apoptotic Vesicles Promote Bone Regeneration via Golgi Phosphoprotein 2 (GOLPH2)-AKT Signaling Axis. ACS NANO 2023; 17:25070-25090. [PMID: 38047915 PMCID: PMC10753896 DOI: 10.1021/acsnano.3c07717] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2023] [Revised: 11/22/2023] [Accepted: 11/28/2023] [Indexed: 12/05/2023]
Abstract
Apoptotic vesicles (apoVs) are apoptotic-cell-derived nanosized vesicles that take on dominant roles in regulating bone homeostasis. We have demonstrated that mesenchymal stem cell (MSC)-derived apoVs are promising therapeutic agents for bone regeneration. However, clinical translation of MSC-derived apoVs has been hindered due to cell expansion and nuclear substance. As another appealing source for apoV therapy, blood cells could potentially eliminate these limitations. However, whether blood cells can release apoVs during apoptosis is uncertain, and the detailed characteristics and biological properties of respective apoVs are not elucidated. In this study, we showed that platelets (PLTs) could rapidly release abundant apoVs during apoptosis in a short time. To recognize the different protein expressions between PLT-derived apoVs and PLTs, we established their precise protein landscape. Furthermore, we identified six proteins specifically enriched in PLT-derived apoVs, which could be considered as specific biomarkers. More importantly, PLT-derived apoVs promoted osteogenesis of MSCs and rescued bone loss via Golgi phosphoprotein 2 (GOLPH2)-induced AKT phosphorylation, therefore, leading to the emergence of their potential in bone regeneration. In summary, we comprehensively determined characteristics of PLT-derived apoVs and confirmed their roles in bone metabolism through previously unrecognized GOPLH2-dependent AKT signaling, providing more understanding for exploring apoV-based therapy in bone tissue engineering.
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Affiliation(s)
- Yuhe Jiang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology,
National Center of Stomatology, National Clinical Research Center
for Oral Disease, National Engineering Research Center of Oral Biomaterials
and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology,
Research Center of Engineering and Technology for Computerized Dentistry
Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Yuan Zhu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology,
National Center of Stomatology, National Clinical Research Center
for Oral Disease, National Engineering Research Center of Oral Biomaterials
and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology,
Research Center of Engineering and Technology for Computerized Dentistry
Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Yuzi Shao
- Department of Prosthodontics, Peking University School and Hospital of Stomatology,
National Center of Stomatology, National Clinical Research Center
for Oral Disease, National Engineering Research Center of Oral Biomaterials
and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology,
Research Center of Engineering and Technology for Computerized Dentistry
Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Kunkun Yang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology,
National Center of Stomatology, National Clinical Research Center
for Oral Disease, National Engineering Research Center of Oral Biomaterials
and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology,
Research Center of Engineering and Technology for Computerized Dentistry
Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Lei Zhu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology,
National Center of Stomatology, National Clinical Research Center
for Oral Disease, National Engineering Research Center of Oral Biomaterials
and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology,
Research Center of Engineering and Technology for Computerized Dentistry
Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Yunsong Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology,
National Center of Stomatology, National Clinical Research Center
for Oral Disease, National Engineering Research Center of Oral Biomaterials
and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology,
Research Center of Engineering and Technology for Computerized Dentistry
Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Ping Zhang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology,
National Center of Stomatology, National Clinical Research Center
for Oral Disease, National Engineering Research Center of Oral Biomaterials
and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology,
Research Center of Engineering and Technology for Computerized Dentistry
Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Xiao Zhang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology,
National Center of Stomatology, National Clinical Research Center
for Oral Disease, National Engineering Research Center of Oral Biomaterials
and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology,
Research Center of Engineering and Technology for Computerized Dentistry
Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology,
National Center of Stomatology, National Clinical Research Center
for Oral Disease, National Engineering Research Center of Oral Biomaterials
and Digital Medical Devices, Beijing Key Laboratory of Digital Stomatology,
Research Center of Engineering and Technology for Computerized Dentistry
Ministry of Health, NMPA Key Laboratory for Dental Materials, Beijing 100081, China
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ITOH H, TANI K, SUNAHARA H, NEMOTO Y, NAKAICHI M, HORIKIRIZONO H, ITAMOTO K. Sulfasalazine, a potent cystine-glutamate transporter inhibitor, enhances osteogenic differentiation of canine adipose-derived stem cells. J Vet Med Sci 2023; 85:1237-1244. [PMID: 37866885 PMCID: PMC10686774 DOI: 10.1292/jvms.22-0525] [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: 12/05/2022] [Accepted: 08/31/2023] [Indexed: 10/24/2023] Open
Abstract
Cystine-glutamate transporter (xCT) is a plasma membrane transporter that imports cystine and indirectly contributes to the oxidative stress resistance associated with increased intracellular glutathione levels. Canine adipose-derived stem cells (CADSCs) include an xCT-positive subpopulation and show relatively low expression of osteogenic markers during in vitro osteogenic differentiation. Sulfasalazine (SSZ), a drug used to treat rheumatoid arthritis, suppresses xCT expression in cancer cells. In this study, we found that the SSZ treatment at 100 µM significantly suppressed xCT mRNA expression in CADSCs but did not significantly affect cell proliferation under the same conditions. Additionally, this treatment decreased the intracellular glutathione concentration. During in vitro osteogenic differentiation, the SSZ treatment at 50 µM and 100 µM significantly increased alizarin red staining and its quantification, as well as the concentration-dependent osteogenic differentiation markers (BMP1 and SPP) mRNA expression. Our results suggested that SSZ enhances the osteogenic differentiation potential of CADSCs and can potentially exhibit a superior therapeutic profile in canine bone regenerative medicine.
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Affiliation(s)
- Harumichi ITOH
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kenji TANI
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiroshi SUNAHARA
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Yuki NEMOTO
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Munekazu NAKAICHI
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Hiro HORIKIRIZONO
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
| | - Kazuhito ITAMOTO
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, Yamaguchi, Japan
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5
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Wang S, Liu Y, Wu Z, Jin Y, Zhang T, Yang Z, Liu C. Inhibition of xCT by sulfasalazine alleviates the depression-like behavior of adult male mice subjected to maternal separation stress. Behav Brain Res 2023; 452:114559. [PMID: 37392785 DOI: 10.1016/j.bbr.2023.114559] [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: 05/05/2023] [Revised: 06/20/2023] [Accepted: 06/28/2023] [Indexed: 07/03/2023]
Abstract
Maternal separation (MS) can induce emotional disorders. Our previous study reported that MS resulted in depression-like behavior. In this study, we aimed to explore the role of xCT in depression-like behavior in adult mice subjected to MS stress. Pups were divided into the control group, the control + sulfasalazine (SSZ, 75 mg/kg/day, i.p.) group, the MS group, and the MS+SSZ group. After MS, all pups were raised until PD60. Then, the depression-like behavior was detected by the novelty suppressed feeding (NSF) test, the forced swimming test (FST), and the tail suspension test (TST). The synaptic plasticity was examined by electrophysiological recordings and molecular biotechnology. The data showed that, compared with the control group, the mice in the MS group presented depression-like behavior, impairment of long-term potentiation (LTP), a reduction in the number of astrocytes, and activation of the microglia. Moreover, the expression of xCT was increased in the prefrontal cortex of MS mice, the EAAT2 and the Group Ⅱ metabotropic glutamate receptors (mGluR2/3) were decreased, and the level of pro-inflammatory factors was increased in the prefrontal cortex. After the administration with SSZ, the depression-like behavior and the impairment of LTP were alleviated, the number of astrocytes was increased, and the microglial activation was inhibited. Moreover, the levels of EAAT2 and mGluR2/3 were ameliorated, the over-activation of the microglia was mitigated, and the levels of glutamate and pro-inflammatory factors were decreased. In conclusion, the inhibition of xCT by SSZ could alleviate depression-like behavior partly via modulating the homeostasis of the glutamate system and dampening neuroinflammation.
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Affiliation(s)
- Shengwen Wang
- School of Medicine, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Ye Liu
- Tianjin Key Laboratory of Injuries, Variations and Regeneration of Nervous System, Tianjin 300052, China; Key Laboratory of Post-trauma Neuro-repair and Regeneration in Central Nervous System, Ministry of Education, Tianjin 300052, China; Tianjin Neurological Institute, Tianjin 300052, China; Department of Neurology, Tianjin Medical University General Hospital, Tianjin 300052, China
| | - Zekang Wu
- School of Medicine, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Yuwen Jin
- School of Medicine, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Tao Zhang
- College of Life Sciences, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Zhuo Yang
- School of Medicine, Nankai University, 94 Weijin Road, Tianjin 300071, China
| | - Chunhua Liu
- School of Medicine, Nankai University, 94 Weijin Road, Tianjin 300071, China.
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6
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Guo W, Wang X, Lu B, Yu J, Xu M, Huang R, Cheng M, Yang M, Zhao W, Zou C. Super-enhancer-driven MLX mediates redox balance maintenance via SLC7A11 in osteosarcoma. Cell Death Dis 2023; 14:439. [PMID: 37460542 DOI: 10.1038/s41419-023-05966-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Revised: 06/22/2023] [Accepted: 07/06/2023] [Indexed: 07/20/2023]
Abstract
Osteosarcoma (OS) is a common type of bone tumor for which there has been limited therapeutic progress over the past three decades. The prevalence of transcriptional addiction in cancer cells emphasizes the biological significance and clinical relevance of super-enhancers. In this study, we found that Max-like protein X (MLX), a member of the Myc-MLX network, is driven by super-enhancers. Upregulation of MLX predicts a poor prognosis in osteosarcoma. Knockdown of MLX impairs growth and metastasis of osteosarcoma in vivo and in vitro. Transcriptomic sequencing has revealed that MLX is involved in various metabolic pathways (e.g., lipid metabolism) and can induce metabolic reprogramming. Furthermore, knockdown of MLX results in disturbed transport and storage of ferrous iron, leading to an increase in the level of cellular ferrous iron and subsequent induction of ferroptosis. Mechanistically, MLX regulates the glutamate/cystine antiporter SLC7A11 to promote extracellular cysteine uptake required for the biosynthesis of the essential antioxidant GSH, thereby detoxifying reactive oxygen species (ROS) and maintaining the redox balance of osteosarcoma cells. Importantly, sulfasalazine, an FDA-approved anti-inflammatory drug, can inhibit SLC7A11, disrupt redox balance, and induce massive ferroptosis, leading to impaired tumor growth in vivo. Taken together, this study reveals a novel mechanism in which super-enhancer-driven MLX positively regulates SLC7A11 to meet the alleviated demand for cystine and maintain the redox balance, highlighting the feasibility and clinical promise of targeting SLC7A11 in osteosarcoma.
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Affiliation(s)
- Weitang Guo
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Xin Wang
- CAS Key Laboratory of Quantitative Engineering Biology, Shenzhen Institute of Synthetic Biology, Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China
| | - Bing Lu
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Jiaming Yu
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Mingxian Xu
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Renxuan Huang
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Mingzhe Cheng
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China
| | - Meiling Yang
- Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, 510080, China
| | - Wei Zhao
- Key Laboratory of Stem Cells and Tissue Engineering (Sun Yat-Sen University), Ministry of Education, Guangzhou, 510080, China.
| | - Changye Zou
- Department of Musculoskeletal Oncology, The First Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510080, China.
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Repression of the antiporter SLC7A11/glutathione/glutathione peroxidase 4 axis drives ferroptosis of vascular smooth muscle cells to facilitate vascular calcification. Kidney Int 2022; 102:1259-1275. [PMID: 36063875 DOI: 10.1016/j.kint.2022.07.034] [Citation(s) in RCA: 105] [Impact Index Per Article: 52.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2021] [Revised: 06/13/2022] [Accepted: 07/27/2022] [Indexed: 01/12/2023]
Abstract
Vascular calcification is a common pathologic condition in patients with chronic kidney disease (CKD). Cell death such as apoptosis plays a critical role in vascular calcification. Ferroptosis is a type of iron-catalyzed and regulated cell death resulting from excessive iron-dependent reactive oxygen species and lipid peroxidation. However, it is unclear whether ferroptosis of vascular smooth muscle cells (VSMCs) regulates vascular calcification in CKD. Our results showed that high calcium and phosphate concentrations induced ferroptosis in rat VSMCs in vitro. Inhibition of ferroptosis by ferrostatin-1 dose-dependently reduced mineral deposition in rat VSMCs under pro-osteogenic conditions, as indicated by alizarin red staining and quantification of calcium content. In addition, gene expression analysis revealed that ferrostatin-1 inhibited osteogenic differentiation of rat VSMCs. Similarly, ferrostatin-1 remarkably attenuated calcification of rat and human arterial rings ex vivo and aortic calcification in vitamin D3-overloaded mice in vivo. Moreover, inhibition of ferroptosis by either ferrostatin-1 or deferoxamine attenuated aortic calcification in rats with CKD. Mechanistically, high calcium and phosphate downregulated expression of SLC7A11 (a cystine-glutamate antiporter), and reduced glutathione (GSH) content in VSMCs. Additionally, GSH depletion induced by erastin (a small molecule initiating ferroptotic cell death) significantly promoted calcification of VSMCs under pro-osteogenic conditions, whereas GSH supplement by N-acetylcysteine reduced calcification of VSMCs. Consistently, knockdown of SLC7A11 by siRNA markedly promoted VSMC calcification. Furthermore, high calcium and phosphate downregulated glutathione peroxidase 4 (GPX4) expression, and reduced glutathione peroxidase activity. Inhibition of GPX4 by RSL3 promoted VSMC calcification. Thus, repression of the SLC7A11/GSH/GPX4 axis triggers ferroptosis of VSMCs to promote vascular calcification under CKD conditions, providing a novel targeting strategy for vascular calcification.
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Hauser B, Raterman H, Ralston SH, Lems WF. The Effect of Anti-rheumatic Drugs on the Skeleton. Calcif Tissue Int 2022; 111:445-456. [PMID: 35771255 PMCID: PMC9560949 DOI: 10.1007/s00223-022-01001-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Accepted: 06/11/2022] [Indexed: 12/27/2022]
Abstract
The therapeutic armamentarium for rheumatoid arthritis has increased substantially over the last 20 years. Historically antirheumatic treatment was started late in the disease course and frequently included prolonged high-dose glucocorticoid treatment which was associated with accelerated generalised bone loss and increased vertebral and non-vertebral fracture risk. Newer biologic and targeted synthetic treatments and a combination of conventional synthetic DMARDs prevent accelerated systemic bone loss and may even allow repair of cortical bone erosions. Emerging data also gives new insight on the impact of long-term conventional synthetic DMARDs on bone health and fracture risk and highlights the need for ongoing studies for better understanding of "established therapeutics". An interesting new antirheumatic treatment effect is the potential of erosion repair with the use of biologic DMARDs and janus kinase inhibitors. Although several newer anti-rheumatic drugs seem to have favorable effects on bone mineral density in RA patients, these effects are modest and do not seem to influence the fracture risk thus far. We summarize recent developments and findings of the impact of anti-rheumatic treatments on localized and systemic bone integrity and health.
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Affiliation(s)
- B Hauser
- Rheumatic Disease Unit, Western General Hospital, Edinburgh, UK.
- Rheumatology and Bone Disease Unit, Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK.
| | - H Raterman
- Department of Rheumatology, Northwest Clinics, Alkmaar, The Netherlands
| | - S H Ralston
- Rheumatic Disease Unit, Western General Hospital, Edinburgh, UK
- Rheumatology and Bone Disease Unit, Centre for Genomic and Experimental Medicine, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh, UK
| | - W F Lems
- Amsterdam Rheumatology and Immunology Centre, Amsterdam, The Netherlands
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9
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Bioinformatics Identification of Ferroptosis-Associated Biomarkers and Therapeutic Compounds in Psoriasis. JOURNAL OF ONCOLOGY 2022; 2022:3818216. [PMID: 36276287 PMCID: PMC9581596 DOI: 10.1155/2022/3818216] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/15/2022] [Accepted: 08/20/2022] [Indexed: 11/18/2022]
Abstract
Purpose. Psoriasis is closely linked to ferroptosis. This study aimed to identify potential ferroptosis-associated genes in psoriasis using bioinformatics. Methods. Data from the GSE30999 dataset was downloaded from the Gene Expression Omnibus (GEO), and the ferroptosis-associated genes were retrieved from FerrDb. The differentially expressed ferroptosis-associated genes were identified using Venn diagrams. Subsequently, a network of protein-protein interactions (PPIs) between psoriasis targets and ferroptosis-associated genes was constructed based on the STRING database and analyzed by Cytoscape software. The Metascape portal conducted Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment analyses. Moreover, the expression of ferroptosis-related genes was verified in the GSE13355 dataset. Finally, the verified genes were used to predict the therapeutic drugs for psoriasis using the DGIdb/CMap database. SwissDock was used to examine ligand docking, and UCSF Chimera displayed the results visually. Results. Among 85 pairs of psoriasis lesion (LS) and no-lesion (NL) samples from patients, 19 ferroptosis-associated genes were found to be differentially expressed (3 upregulated genes and 16 downregulated genes). Based on the PPI results, these ferroptosis-associated genes interact with each other. The GO and KEGG enrichment analysis of differentially expressed ferroptosis-related genes indicated several enriched terms related to the oxidative stress response. The GSE13355 dataset verified the results of the bioinformatics analysis obtained from the GSE30999 dataset regarding SLC7A5, SLC7A11, and CHAC1. Psoriasis-related compounds corresponding to SLC7A5 and SLC7A11 were also identified, including Melphalan, Quisqualate, Riluzole, and Sulfasalazine. Conclusion. We identified 3 differentially expressed ferroptosis-related genes through bioinformatics analysis. SLC7A5, SLC7A11, and CHAC1 may affect the development of psoriasis by regulating ferroptosis. These results open new avenues in understanding the treatment of psoriasis.
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10
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Nguyen AP, Yamagata K, Iwata S, Trimova G, Zhang T, Shan Y, Nguyen MP, Sonomoto K, Nakayamada S, Kato S, Tanaka Y. Enhancer RNA commits osteogenesis via microRNA-3129 expression in human bone marrow-derived mesenchymal stem cells. Inflamm Regen 2022; 42:43. [PMID: 36114571 PMCID: PMC9479228 DOI: 10.1186/s41232-022-00228-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2022] [Accepted: 08/24/2022] [Indexed: 11/29/2022] Open
Abstract
Background Highly regulated gene expression program underlies osteogenesis of mesenchymal stem cells (MSCs), but the regulators in the program are not entirely identified. As enhancer RNAs (eRNAs) have recently emerged as a key regulator in gene expression, we assume a commitment of an eRNA in osteogenesis. Methods We performed in silico analysis to identify potential osteogenic microRNA (miRNA) gene predicted to be regulated by super-enhancers (SEs). SE inhibitor treatment and eRNA knocking-down were used to confirm the regulational mechanism of eRNA. miRNA function in osteogenesis was elucidated by miR mimic and inhibitor transfection experiments. Results miR-3129 was found to be located adjacent in a SE (osteoblast-specific SE_46171) specifically activated in osteoblasts by in silico analysis. A RT-quantitative PCR analysis of human bone marrow-derived MSC (hBMSC) cells showed that eRNA_2S was transcribed from the SE with the expression of miR-3129. Knockdown of eRNA_2S by locked nucleic acid as well as treatment of SE inhibitors JQ1 or THZ1 resulted in low miR-3129 levels. Overexpression of miR-3129 promoted hBMSC osteogenesis, while knockdown of miR-3129 inhibited hBMSC osteogenesis. Solute carrier family 7 member 11 (SLC7A11), encoding a bone formation suppressor, was upregulated following miR-3129-5p inhibition and identified as a target gene for miR-3129 during differentiation of hBMSCs into osteoblasts. Conclusions miR-3129 expression is regulated by SEs via eRNA_2S and this miRNA promotes hBMSC differentiation into osteoblasts through downregulating the target gene SLC7A11. Thus, the present study uncovers a commitment of an eRNA via a miR-3129/SLC7A11 regulatory pathway during osteogenesis of hBMSCs. Supplementary Information The online version contains supplementary material available at 10.1186/s41232-022-00228-4.
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11
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Suzuki A, Iwata J. Amino acid metabolism and autophagy in skeletal development and homeostasis. Bone 2021; 146:115881. [PMID: 33578033 PMCID: PMC8462526 DOI: 10.1016/j.bone.2021.115881] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 12/29/2020] [Accepted: 02/06/2021] [Indexed: 02/06/2023]
Abstract
Bone is an active organ that is continuously remodeled throughout life via formation and resorption; therefore, a fine-tuned bone (re)modeling is crucial for bone homeostasis and is closely connected with energy metabolism. Amino acids are essential for various cellular functions as well as an energy source, and their synthesis and catabolism (e.g., metabolism of carbohydrates and fatty acids) are regulated through numerous enzymatic cascades. In addition, the intracellular levels of amino acids are maintained by autophagy, a cellular recycling system for proteins and organelles; under nutrient deprivation conditions, autophagy is strongly induced to compensate for cellular demands and to restore the amino acid pool. Metabolites derived from amino acids are known to be precursors of bioactive molecules such as second messengers and neurotransmitters, which control various cellular processes, including cell proliferation, differentiation, and homeostasis. Thus, amino acid metabolism and autophagy are tightly and reciprocally regulated in our bodies. This review discusses the current knowledge and potential links between bone diseases and deficiencies in amino acid metabolism and autophagy.
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Affiliation(s)
- Akiko Suzuki
- Department of Diagnostic & Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX 77054, USA; Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX 77054, USA
| | - Junichi Iwata
- Department of Diagnostic & Biomedical Sciences, School of Dentistry, The University of Texas Health Science Center at Houston, Houston, TX 77054, USA; Center for Craniofacial Research, The University of Texas Health Science Center at Houston, Houston, TX 77054, USA; MD Anderson Cancer Center UTHealth Graduate School of Biomedical Sciences, Houston, TX 77030, USA.
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12
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Chen HW, Zhang XX, Peng ZD, Xing ZM, Zhang YW, Li YL. The circular RNA circSlc7a11 promotes bone cancer pain pathogenesis in rats by modulating LLC-WRC 256 cell proliferation and apoptosis. Mol Cell Biochem 2021; 476:1751-1763. [PMID: 33433832 PMCID: PMC7940317 DOI: 10.1007/s11010-020-04020-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 12/11/2020] [Indexed: 12/12/2022]
Abstract
Treatment of bone cancer pain (BCP) caused by bone metastasis in advanced cancers remains a challenge in clinical oncology, and the underlying mechanisms of BCP are poorly understood. This study aimed to investigate the pathogenic roles of circular RNAs (circRNAs) in regulating cancer cell proliferation and BCP development. Eight differentially expressed circRNAs in the rat spinal cord were validated by agarose gel electrophoresis and Sanger sequencing. Expression of circRNAs and mRNAs was detected by quantitative RT-PCR. MTS assay and flow cytometry were performed to analyze cell proliferation and apoptosis, respectively. Differentially expressed mRNA profiles were characterized by deep RNA sequencing, hierarchical clustering, and functional categorization. The interactions among circRNAs, microRNAs (miRNAs), and mRNAs were predicted using TargetScan. Additionally, western blot was performed to determine the protein levels of Pax8, Isg15, and Cxcl10. Multiple circRNAs were differentially expressed in the spinal cords of BCP model rats; of these, circSlc7a11 showed the greatest increase in expression. The overexpression of circSlc7a11 significantly promoted cell proliferation and repressed apoptosis of LLC-WRC 256 and UMR-106 cells, whereas circSlc7a11 silencing produced the opposite effects. Altered expression of circSlc7a11 also induced substantial changes in the mRNA expression profiles of LLC-WRC 256 cells; these changes were linked to multiple apoptotic processes and signaling pathways, such as the chemokine signaling pathway, and formed a complex circRNA/miRNA/mRNA network. Additionally, Pax8, Isg15, and Cxc110 protein level in LLC-WRC 256 cells was consistent with the mRNA results. The circRNA circSlc7a11 regulates rat BCP development by modulating LLC-WRC 256 cell proliferation and apoptosis through multiple-signaling mechanisms.
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Affiliation(s)
- Han-Wen Chen
- Department of Anesthesiology, The First Affiliated Hospital of Jinan University, Tianhe District, No. 613, Huangpu Avenue West, Guangzhou, 510632, China
- Department of Anesthesiology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan, 528308, China
| | - Xiao-Xia Zhang
- Department of Anesthesiology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan, 528308, China
| | - Zhu-Ding Peng
- Department of Anesthesiology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan, 528308, China
| | - Zu-Min Xing
- Department of Anesthesiology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan, 528308, China
| | - Yi-Wen Zhang
- Department of Anesthesiology, Shunde Hospital, Southern Medical University (The First People's Hospital of Shunde), Foshan, 528308, China
| | - Ya-Lan Li
- Department of Anesthesiology, The First Affiliated Hospital of Jinan University, Tianhe District, No. 613, Huangpu Avenue West, Guangzhou, 510632, China.
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13
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Jin C, Shuai T, Tang Z. HSPB7 regulates osteogenic differentiation of human adipose derived stem cells via ERK signaling pathway. Stem Cell Res Ther 2020; 11:450. [PMID: 33097082 PMCID: PMC7583167 DOI: 10.1186/s13287-020-01965-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2020] [Accepted: 10/05/2020] [Indexed: 01/18/2023] Open
Abstract
Background Heat shock protein B7 (HSPB7), which belongs to small heat shock protein family, has been reported to be involved in diverse biological processes and diseases. However, whether HSPB7 regulates osteogenic differentiation of human adipose derived stem cells (hASCs) remains unexplored. Methods The expression level of HSPB7 during the osteogenesis of hASCs was examined by quantitative reverse transcription polymerase chain reaction (qRT-PCR) and Western blot analysis. Lentivirus transfection was used to knock down or overexpress HSPB7, which enabled us to investigate the effect of HSPB7 on osteogenic differentiation of hASCs. U0126 and extracellular signal-regulated protein kinase 1/2 (ERK1/2) siRNA were used to identify the mechanism of the HSPB7/ERK1/2 axis in regulating osteogenic differentiation of hASCs. Moreover, ectopic bone formation in nude mice and osteoporosis mice model was used to investigate the effect of HSPB7 on osteogenesis in vivo. Results In this study, we found the expression of HSPB7 was significantly downregulated during the osteogenic differentiation of hASCs. HSPB7 knockdown remarkably promoted osteogenic differentiation of hASCs, while HSPB7 overexpression suppressed osteogenic differentiation of hASCs both in vitro and in vivo. Moreover, we discovered that the enhancing effect of HSPB7 knockdown on osteogenic differentiation was related to the activation of extracellular signal-regulated protein kinase (ERK) signaling pathway. Inhibition of ERK signaling pathway with U0126 or silencing ERK1/2 effectively blocked the stimulation of osteogenic differentiation induced by HSPB7 knockdown. Additionally, we found that HSPB7 expression was markedly increased in mouse bone marrow mesenchymal stem cells (mBMSCs) from the osteoporotic mice which suggested that HSPB7 might be utilized as a potential target in the development of effective therapeutic strategies to treat osteoporosis and other bone diseases. Conclusion Taken together, these findings uncover a previously unrecognized function of HSPB7 in regulating osteogenic differentiation of hASCs, partly via the ERK signaling pathway.
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Affiliation(s)
- Chanyuan Jin
- Second Clinical Division, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Ting Shuai
- Second Clinical Division, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Zhihui Tang
- Second Clinical Division, Peking University School and Hospital of Stomatology, Beijing, 100081, China.
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14
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Carbone L, Vasan S, Elam R, Gupta S, Tolaymat O, Crandall C, Wactawski-Wende J, Johnson KC. The Association of Methotrexate, Sulfasalazine, and Hydroxychloroquine Use With Fracture in Postmenopausal Women With Rheumatoid Arthritis: Findings From the Women's Health Initiative. JBMR Plus 2020; 4:e10393. [PMID: 33103025 PMCID: PMC7574701 DOI: 10.1002/jbm4.10393] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Revised: 06/16/2020] [Accepted: 06/24/2020] [Indexed: 02/06/2023] Open
Abstract
This study was conducted to evaluate the extent to which disease‐modifying antirheumatic medications (DMARDs) used as part of a triple therapy for the treatment of rheumatoid arthritis (RA) including methotrexate, sulfasalazine, and hydroxychloroquine are associated with fractures in postmenopausal women with RA. Incident fractures following use of methotrexate, sulfasalazine, and/or hydroxychloroquine in postmenopausal women with RA in the Women's Health Initiative were estimated by Cox proportional hazards using hazard ratios (HRs) and 95% CIs after consideration of potential confounders. There were 1201 women with RA enrolled in the Women's Health Initiative included in these analyses, of which 74% were white, 17% were black, and 9% were of other or unknown race/ethnicity. Of the women with RA, 421 (35%) had not used methotrexate, sulfasalazine, or hydroxychloroquine, whereas 519 (43%) women had used methotrexate, 83 (7%) sulfasalazine, and 363 (30%) hydroxychloroquine alone or in combination at some time during study follow‐up. Over a median length of 6.46 years of follow‐up, in multivariable adjusted models, no statistically significant association was found between methotrexate (HR, 1.1; 95% CI, 0.8–1.6), sulfasalazine (HR, 0.6; 95% CI, 0.2–1.5), or hydroxychloroquine (HR, 1.0; 95% CI, 0.7–1.5) use and incident fractures or between combination therapy with methotrexate and sulfasalazine or methotrexate and hydroxychloroquine use (HR, 0.9; 95% CI, 0.5–1.6) and incident fractures. In conclusion, postmenopausal women with RA receiving any component of triple therapy should not be expected to have any substantial reduction in fracture risk from use of these DMARDs. © 2020 The Authors. JBMR Plus published by Wiley Periodicals LLC on behalf of American Society for Bone and Mineral Research.
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Affiliation(s)
- Laura Carbone
- Department of Medicine, Division of Rheumatology, J. Harold Harrison MD, Distinguished University Chair in Rheumatology Medical College of Georgia at Augusta University Augusta GA USA.,Department of Rheumatology Charlie Norwood Veterans Affairs Medical Center Augusta GA USA
| | - Sowmya Vasan
- Fred Hutchinson Cancer Research Center Seattle WA USA
| | - Rachel Elam
- Department of Rheumatology Charlie Norwood Veterans Affairs Medical Center Augusta GA USA.,Department of Medicine, Division of Rheumatology Medical College of Georgia at Augusta University Augusta GA USA
| | - Sandeepkumar Gupta
- Department of Medicine, Division of Rheumatology Medical College of Georgia at Augusta University Augusta GA USA
| | - Omar Tolaymat
- Department of Medicine, Division of Rheumatology Medical College of Georgia at Augusta University Augusta GA USA
| | - Carolyn Crandall
- Department of Medicine, Division of General Internal Medicine and Health Services Research David Geffen School of Medicine at University of California, Los Angeles Los Angeles CA USA
| | - Jean Wactawski-Wende
- Department of Epidemiology and Environmental Health, School of Public Health and Health Professions University at Buffalo Buffalo NY USA
| | - Karen C Johnson
- Department of Preventive Medicine University of Tennessee Health Science Center Memphis TN USA
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15
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Jin C, Jia L, Tang Z, Zheng Y. Long non-coding RNA MIR22HG promotes osteogenic differentiation of bone marrow mesenchymal stem cells via PTEN/ AKT pathway. Cell Death Dis 2020; 11:601. [PMID: 32732881 PMCID: PMC7393093 DOI: 10.1038/s41419-020-02813-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 07/16/2020] [Accepted: 07/16/2020] [Indexed: 02/07/2023]
Abstract
Osteoporosis is a prevalent metabolic bone disease characterized by low bone mineral density and degenerative disorders of bone tissues. Previous studies showed the abnormal osteogenic differentiation of endogenous bone marrow mesenchymal stem cells (BMSCs) contributes to the development of osteoporosis. However, the underlying mechanisms by which BMSCs undergo osteogenic differentiation remain largely unexplored. Recently, long non-coding RNAs have been discovered to play important roles in regulating BMSC osteogenesis. In this study, we first showed MIR22HG, which has been demonstrated to be involved in the progression of several cancer types, played an important role in regulating BMSC osteogenesis. We found the expression of MIR22HG was significantly decreased in mouse BMSCs from the osteoporotic mice and it was upregulated during the osteogenic differentiation of human BMSCs. Overexpression of MIR22HG in human BMSCs enhanced osteogenic differentiation, whereas MIR22HG knockdown inhibited osteogenic differentiation both in vitro and in vivo. Mechanistically, MIR22HG promoted osteogenic differentiation by downregulating phosphatase and tensin homolog (PTEN) and therefore activating AKT signaling. Moreover, we found MIR22HG overexpression promoted osteoclastogenesis of RAW264.7 cells, which indicated that MIR22HG played a significant role in bone metabolism and could be a therapeutic target for osteoporosis and other bone-related diseases.
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Affiliation(s)
- Chanyuan Jin
- The Second Clinical Division of Peking University School and Hospital of Stomatology, 100081, Beijing, China
| | - Lingfei Jia
- Central Laboratory, Peking University School and Hospital of Stomatology, 100081, Beijing, China.,Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, 100081, Beijing, China
| | - Zhihui Tang
- The Second Clinical Division of Peking University School and Hospital of Stomatology, 100081, Beijing, China.
| | - Yunfei Zheng
- Department of Orthodontics, Peking University School and Hospital of Stomatology, 100081, Beijing, China.
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16
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Fan T, Meng X, Sun C, Yang X, Chen G, Li W, Chen Z. Genome-wide DNA methylation profile analysis in thoracic ossification of the ligamentum flavum. J Cell Mol Med 2020; 24:8753-8762. [PMID: 32583558 PMCID: PMC7412700 DOI: 10.1111/jcmm.15509] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 05/12/2020] [Accepted: 05/29/2020] [Indexed: 12/16/2022] Open
Abstract
Thoracic ossification of the ligamentum flavum (TOLF) causes serious spinal canal stenosis. The underlying aetiology may relate to genetic and inflammatory factors. DNA methylation plays a critical role in osteogenesis and inflammation, whereas there is no genome‐wide DNA methylation analysis about TOLF. The two subtypes of TOLF (single‐level and multiple‐level) have distinct clinical features. Using micro‐computed tomography (micro‐CT), we showed the ossification arose from the joint between two vertebrae at one/both sides of ligament flavum. With Illumina Infinium Human Methylation 850 BeadChip arrays, genome‐wide DNA methylation profile was measured in ligament flavum of eight healthy and eight TOLF samples. Only 65 of the differentially methylated cytosine‐phosphate‐guanine dinucleotides were found in both subtype groups. Principal component analysis and heat map analysis showed a different methylation pattern in TOLF samples, and methylation patterns of two subtypes are also distinct. The Gene Ontology enrichment analysis was significantly enriched in differentiation and inflammation. Pyrosequencing analysis and quantitative real‐time polymerase chain reaction were performed to validate the arrays results and expression levels, to test six differentially methylated genes (SLC7A11, HOXA10, HOXA11AS, TNIK, homeobox transcript antisense RNA, IFITM1), using another independent samples (P < 0.05). Our findings first demonstrated an altered Genome‐wide DNA methylation profile in TOLF, and implied distinct methylated features in two subtypes.
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Affiliation(s)
- Tianqi Fan
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Xiangyu Meng
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Chuiguo Sun
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Xiaoxi Yang
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Guanghui Chen
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Weishi Li
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
| | - Zhongqiang Chen
- Department of Orthopaedics, Peking University Third Hospital, Beijing, China
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17
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黄 振, 蔡 卓, 钱 静, 汪 建, 胡 宁. [Effect of micro RNA-335-5p regulating bone morphogenetic protein 2 on osteogenic differentiation of human bone marrow mesenchymal stem cells]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2020; 34:781-786. [PMID: 32538572 PMCID: PMC8171532 DOI: 10.7507/1002-1892.201910097] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 10/25/2019] [Revised: 03/05/2020] [Indexed: 11/03/2022]
Abstract
OBJECTIVE To investigate the effect of micro RNA (miR)-335-5p regulating bone morphogenetic protein 2 (BMP-2) on the osteogenic differentiation of human bone marrow mesenchymal stem cells (hBMSCs). METHODS hBMSCs were cultured in vitro and randomly divided into control group (group A), miR-335-5p mimics group (group B), miR-335-5p mimics negative control group (group C), miR-335-5p inhibitor group (group D), and miR-335-5p inhibitor negative control group (group E). After grouping treatment and induction of osteogenic differentiation, the osteogenic differentiation of cells in each group was detected by alkaline phosphatase (ALP) and alizarin red staining; the expressions of miR-335-5p and BMP-2, Runt-related transcription factor 2 (Runx2), osteopontin (OPN), and osteocalcin (OCN) mRNAs were detected by real-time fluorescence quantitative PCR analysis; the expressions of Runx2, OPN, OCN, and BMP-2 proteins were detected by Western blot. RESULTS Compared with group A, the relative proportion of ALP positive cells and the relative content of mineralized nodules, the relative expressions of BMP-2, miR-335-5p, OPN, OCN, Runx2 mRNAs, the relative expressions of Runx2, OPN, OCN, and BMP-2 proteins in group B were significantly increased ( P<0.05); the above indexes in group D were significantly decreased ( P<0.05); the above indexes between groups C, E and group A were not significantly different ( P>0.05). CONCLUSION miR-335-5p can up-regulate BMP-2 expression and promote osteogenic differentiation of hBMSCs.
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Affiliation(s)
- 振明 黄
- 武汉市第九医院创伤外科(武汉 430080)Department of Trauma Surgery, the Ninth Hospital of Wuhan City, Wuhan Hubei, 430080, P.R.China
| | - 卓 蔡
- 武汉市第九医院创伤外科(武汉 430080)Department of Trauma Surgery, the Ninth Hospital of Wuhan City, Wuhan Hubei, 430080, P.R.China
| | - 静 钱
- 武汉市第九医院创伤外科(武汉 430080)Department of Trauma Surgery, the Ninth Hospital of Wuhan City, Wuhan Hubei, 430080, P.R.China
| | - 建雄 汪
- 武汉市第九医院创伤外科(武汉 430080)Department of Trauma Surgery, the Ninth Hospital of Wuhan City, Wuhan Hubei, 430080, P.R.China
| | - 宁 胡
- 武汉市第九医院创伤外科(武汉 430080)Department of Trauma Surgery, the Ninth Hospital of Wuhan City, Wuhan Hubei, 430080, P.R.China
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18
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Liu H, Gu R, Zhu Y, Lian X, Wang S, Liu X, Ping Z, Liu Y, Zhou Y. D-mannose attenuates bone loss in mice via Treg cell proliferation and gut microbiota-dependent anti-inflammatory effects. Ther Adv Chronic Dis 2020; 11:2040622320912661. [PMID: 32341776 PMCID: PMC7169364 DOI: 10.1177/2040622320912661] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Accepted: 02/05/2020] [Indexed: 12/16/2022] Open
Abstract
Background: D-mannose exhibits strong anti-inflammatory properties, but whether it has beneficial effects on preventing and treating osteoporosis remains unknown. Methods: Female, 12-month-old senile C57BL6/J mice (s-Man group) and 8-week-old ovariectomized C57BL6/J mice (OVX-Man group) were treated with D-mannose in drinking water for 2 months (six mice/group). Microcomputed tomography analysis and hematoxylin and eosin staining were performed to investigate the effect of D-mannose on attenuation of bone loss. Tartrate-resistant acid phosphatase staining of tissue sections, flow cytometry, enzyme-linked immunosorbent assay, quantitative real-time polymerase chain reaction, and gut microbiome biodiversity tests were used to explore the underlying mechanisms. Results: D-mannose-induced marked increases in cortical bone volume and trabecular bone microarchitecture in the s-Man and OVX-Man group compared with that in the s-CTRL (senile control) and OVX group, respectively. Moreover, D-mannose downregulated osteoclastogenesis-related cytokines in the bone marrow and expanded regulatory T cells in the spleen of mice. Furthermore, D-mannose reconstructed the gut microbiota and changed the metabolite composition. Conclusion: D-mannose attenuated bone loss induced by senility and estrogen deficiency in mice, and this effect may be mediated by D-mannose-induced proliferation of regulatory T cells and gut microbiota-dependent anti-inflammatory effects.
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Affiliation(s)
- Hao Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Ranli Gu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yuan Zhu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Xiaomin Lian
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Siyi Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Xuenan Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Zhang Ping
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
| | - Yunsong Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing 100081, China
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Clinical Research Center for Oral Diseases, National Engineering Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, Beijing, China
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19
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Itoh H, Nishikawa S, Tani K, Sunahara H, Nakaichi M, Iseri T, Taura Y, Itamoto K. Cystine transporter expression is a marker to identify a subpopulation of canine adipose-derived stem cells. J Vet Med Sci 2020; 82:713-720. [PMID: 32269196 PMCID: PMC7324832 DOI: 10.1292/jvms.19-0373] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Adipose-derived stem cells (ADSCs) are promising cell sources for regenerative medicine
due to the simplicity of their harvest and culture; however, their biological properties
are not completely understood. Moreover, recent murine and human studies identified
several functional subpopulations of ADSCs varying in differentiation potential; however,
there is a lack of research on canine ADSCs. Cystine transporter (xCT) is a stem cell
marker in gastric and colon cancers that interacts with CD44 to enhance cystine uptake
from the cell surface and subsequently accelerates intercellular glutathione levels. In
this study, we identified a ~5% functional subpopulation of canine ADSCs with
xCT+ expression (xCTHi). Compared with those of the
xCT− subpopulation (xCTLo), the xCTHi subpopulation
showed a significantly higher proliferation rate, higher expression of conventional stem
cell markers (SOX2, KLF4, and c-Myc),
and higher expression of adipogenic markers (FABP4 and
PPARγ). By contrast, the xCTLo subpopulation showed
significantly higher expression of osteogenic markers (BMP1 and
SPP) than xCTHi cells. These results suggest xCT as a
candidate marker for detecting a functional subpopulation of canine ADSCs.
Mechanistically, xCT could increase the adipogenic potential while decreasing the
osteogenic differentiation potential, which could serve as a valuable target marker in
regenerative veterinary medicine.
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Affiliation(s)
- Harumichi Itoh
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Shimpei Nishikawa
- Department of Medical Data Science, Graduate School of Medicine, Osaka University, Yamadaoka 2-2, Suita, Osaka 565-0871, Japan
| | - Kenji Tani
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Hiroshi Sunahara
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Munekazu Nakaichi
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Toshie Iseri
- Department of Veterinary Radiology, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Yasuho Taura
- Department of Veterinary Surgery, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
| | - Kazuhito Itamoto
- Department of Small Animal Clinical Science, Joint Faculty of Veterinary Medicine, Yamaguchi University, 1677-1 Yoshida, Yamaguchi-shi, Yamaguchi 753-8515, Japan
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Flufenamic Acid Inhibits Adipogenic Differentiation of Mesenchymal Stem Cells by Antagonizing the PI3K/AKT Signaling Pathway. Stem Cells Int 2020; 2020:1540905. [PMID: 32256607 PMCID: PMC7102471 DOI: 10.1155/2020/1540905] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 02/16/2020] [Accepted: 02/24/2020] [Indexed: 12/19/2022] Open
Abstract
Objectives Flufenamic acid (FFA) is a representative of the fenamic acids, an important group of NSAIDs. In the present study, we study the effects of FFA on adipogenesis of human mesenchymal stem cells (MSCs) and we explore the potential mechanism. Methods To investigate the effects of FFA on adipogenic differentiation of hMSCs, human adipose-derived stem cells (hASCs) and human bone marrow mesenchymal stem cells (hBMMSCs), representative of hMSCs, were treated with FFA during adipogenic differentiation in vitro. The effects of FFA in vivo were evaluated using a heterotopic adipose formation assay in nude mice as well as ovariectomized (OVX) and aged mice. To explore the mechanism of FFA, Western blot was used to determine activation of the PI3K/AKT signaling pathway. Results Our results demonstrate that, at certain concentrations, FFA inhibited adipogenesis of human MSCs both in vitro and in vivo. Mechanistically, FFA inhibited adipogenesis of human MSCs by inhibiting the PI3K/AKT pathway. Conclusions The present study indicated that FFA could be used to inhibit adipogenesis of human MSCs in tissue engineering and diseases related to excessive adipogenic differentiation of MSCs.
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Chen Z, Yang P, Wu Y, Liu X, Yang Y, Song P, Chen YT, Lin C, Xu Q. Serum Uric Acid Shows Inverted "U" Type Correlation with Osteoporosis in Chinese Ankylosing Spondylitis Patients: A Retrospective Study. Med Sci Monit 2019; 25:9702-9711. [PMID: 31851643 PMCID: PMC6930702 DOI: 10.12659/msm.918766] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Background This study was to investigate the correlation between osteoporosis and serum uric acid in ankylosing spondylitis (AS) patients, and to further identify potential factors that might be associated with osteoporosis in AS patients. Material/Methods We included 182 AS patients, consisted of 143 male patients and 39 female patients, who visited our hospital from January 1, 2014 to December 31, 2018. We used dual-energy x-ray absorptiometry to measure bone mineral density (BMD) of orthotopic lumbar vertebrae in patients with AS. The gender, age, disease duration, BMD, T-score, Z-score, uric acid, erythrocyte sedimentation rate (ESR), C-reactive protein (CRP), blood platelet (PLT), and status of treatment with biologics of the patients were collected. Then, the Spearman correlation coefficient and multivariate liner regression analysis were applied to identify the relationship between the factors and BMD, T-score, and Z-score in AS patients. Results Male AS patients between the ages of 16 and 30 years old had a higher risk of osteoporosis (P<0.05). AS patients with uric acid value between 300–360 μmol/L had the highest BMD, T-score, and Z-score. The BMD had a positive correlation with age and disease duration (P<0.01) while had a negative correlation with PLT (P<0.05). BMD in AS patients with elevated ESR was significantly (P<0.05) lower than in AS patients with normal ESR. There were no significant differences in BMD between AS patients with elevated CRP and the patients with normal CRP and PLT. Treatment with TNFi (tumor necrosis factor alpha inhibitor) did not improve BMD in AS patients. Conclusions The relationship between uric acid and BMD in AS patients was observed as inverted “U”-type. Keeping uric acid within 300–360 μmol/L might be helpful in preventing AS patients from developing osteoporosis.
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Affiliation(s)
- Zhixin Chen
- Department of Rheumatology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland).,Department of Chinese Medicine, South China Agricultural University Hospital, Guangzhou, Guangdong, China (mainland)
| | - Peidan Yang
- Department of Rheumatology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland)
| | - Yuyun Wu
- Guangzhou Bai Yun Shan Chen Li Ji Pharmaceutical Factory Co., Ltd., Guangzhou, Guangdong, China (mainland)
| | - Xiaobao Liu
- Department of Rheumatology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland).,Department of Rheumatology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland)
| | - Yechun Yang
- Department of Rheumatology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland).,Department of Rheumatology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland)
| | - Pingfang Song
- Department of Rheumatology, Oregon Health and Science University, Portland, OR, USA
| | | | - Changsong Lin
- Department of Rheumatology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland).,Department of Rheumatology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland)
| | - Qiang Xu
- Department of Rheumatology, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland).,Department of Rheumatology, The First Affiliated Hospital of Guangzhou University of Chinese Medicine, Guangzhou, Guangdong, China (mainland)
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Asymmetrical methyltransferase PRMT3 regulates human mesenchymal stem cell osteogenesis via miR-3648. Cell Death Dis 2019; 10:581. [PMID: 31378783 PMCID: PMC6680051 DOI: 10.1038/s41419-019-1815-7] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2019] [Revised: 07/03/2019] [Accepted: 07/12/2019] [Indexed: 12/15/2022]
Abstract
Histone arginine methylation, which is catalyzed by protein arginine methyltransferases (PRMTs), plays a key regulatory role in various biological processes. Several PRMTs are involved in skeletal development; however, their role in the osteogenic differentiation of mesenchymal stem cells (MSCs) is not completely clear. In this study, we aimed to elucidate the function of PRMT3, a type-I PRMT that catalyzes the formation of ω-mono- or asymmetric dimethyl arginine, in MSCs osteogenesis. We found that PRMT3 promoted MSCs osteogenic commitment and bone remodeling. PRMT3 activated the expression of miR-3648 by enhancing histone H4 arginine 3 asymmetric dimethylation (H4R3me2a) levels at promoter region of the gene. Overexpression of miR-3648 rescued impaired osteogenesis in PRMT3-deficient cells. Moreover, administration of Prmt3 shRNA or a chemical inhibitor of PRMT3 (SGC707) caused an osteopenia phenotype in mice. These results indicate that PRMT3 is a potential therapeutic target for the treatment of bone regeneration and osteopenia disorders.
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23
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Liu X, Li Z, Liu H, Zhu Y, Xia D, Wang S, Gu R, Wu W, Zhang P, Liu Y, Zhou Y. Low concentration flufenamic acid enhances osteogenic differentiation of mesenchymal stem cells and suppresses bone loss by inhibition of the NF-κB signaling pathway. Stem Cell Res Ther 2019; 10:213. [PMID: 31324207 PMCID: PMC6642517 DOI: 10.1186/s13287-019-1321-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2019] [Revised: 06/09/2019] [Accepted: 06/30/2019] [Indexed: 02/02/2023] Open
Abstract
Background As the representative of fenamic acids, an important group of NSAIDs, flufenamic acid (FFA) has been used for anti-inflammation and analgesia in the clinic. Recently, researches have focused on the role of some members of NSAIDs in promoting osteogenesis. However, little attention has been paid to the subgroup of fenamic acids, and it remains unclear whether FFA and other fenamic acids could regulate mesenchymal stem cells’ (MSCs) lineage commitment and bone regeneration. Methods Here we treated two kinds of human MSCs with FFA at different concentrations in vitro and examined the effect of FFA on osteogenic differentiation of human MSCs. This was followed by heterotopic bone formation assay in nude mice. In addition, ovariectomized and aged mice were used as osteoporotic models to test the effect of FFA on osteoporosis. Besides, activators and inhibitor of nuclear factor-κB (NF-κB) signaling pathway and western blot were used to clarify the mechanism of the promoting effect of low concentration FFA on osteogenesis. Results Our results indicated that low concentrations of FFA could significantly enhance osteogenic differentiation of human MSCs in vitro, as well as in vivo. In addition, FFA treatment suppressed bone loss in ovariectomized and aged mice. Mechanistically, FFA at low concentrations promoted osteogenesis differentiation of human MSCs by inhibition of the NF-κB signaling pathway. Conclusions Collectively, our study suggested that low concentration FFA could be used in bone tissue engineering or osteoporosis by promoting osteogenic differentiation of human MSCs. Electronic supplementary material The online version of this article (10.1186/s13287-019-1321-y) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Xuenan Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Zheng Li
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Hao Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Yuan Zhu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Dandan Xia
- Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing, 100871, People's Republic of China
| | - Siyi Wang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Ranli Gu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
| | - Weiliang Wu
- Department of Implantology II, The Affiliated Stomatological Hospital of Fujian Medical University, Fuzhou, 350001, Fujian, People's Republic of China
| | - Ping Zhang
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China.
| | - Yunsong Liu
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China.
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, National Laboratory for Digital and Material Technology of Stomatology, Beijing Key Laboratory of Digital Stomatology, National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Beijing, 100081, People's Republic of China
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24
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Mo J, Yang R, Li F, He B, Zhang X, Zhao Y, Shen Z, Chen P. Geraniin promotes osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) via activating β-catenin: a comparative study between BMSCs from normal and osteoporotic rats. J Nat Med 2018; 73:262-272. [PMID: 30194656 DOI: 10.1007/s11418-018-1242-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2018] [Accepted: 08/20/2018] [Indexed: 02/06/2023]
Abstract
Abnormal osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) has been correlated with the pathogenesis of osteoporosis. Geraniin, a polyphenolic compound isolated from Phyllanthus amarus, is effective in preventing osteoporosis, but the mechanisms of action of geraniin and the impact of osteoporotic condition on drug action are not known. In this study we compared the proliferation and osteoblastic differentiation potential of BMSCs from normal rats with that from osteoporotic rats, and examined the responses of both BMSCs to geraniin in parallel. BMSCs of rats subjected to ovariectomy or sham operation were isolated and treated with geraniin. Cell proliferation was measured by CCK-8 assay. Osteoblastic differentiation was quantified by Alizarin Red S staining and alkaline phosphatase assay. Nuclear translocation of β-catenin was monitored by immunofluorescent staining. Expression of β-catenin was determined by Western blot and quantitative real-time polymerase chain reaction. Results showed that the proliferation and osteoblast formation of osteoporotic BMSCs decreased in comparison to that of normal BMSCs. Geraniin enhanced proliferation and osteoblastic differentiation of both BMSCs, but the responses of osteoporotic BMSCs to geraniin were less than those of normal BMSCs. Expression and nuclear accumulation of β-catenin in osteoporotic BMSCs were found to be diminished. Geraniin increased nuclear translocation and expression of β-catenin in both BMSCs. This study associated the osteogenic effect of geraniin to activation of Wnt/β-catenin signaling, and provided rationale for pharmacological investigation of geraniin in osteoporosis prevention and treatment.
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Affiliation(s)
- Jiao Mo
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168 Chunrongxi Road, Chenggong District, Kunming, 650500, Yunnan, People's Republic of China
| | - Renhua Yang
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168 Chunrongxi Road, Chenggong District, Kunming, 650500, Yunnan, People's Republic of China
| | - Fan Li
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168 Chunrongxi Road, Chenggong District, Kunming, 650500, Yunnan, People's Republic of China
| | - Bo He
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168 Chunrongxi Road, Chenggong District, Kunming, 650500, Yunnan, People's Republic of China
| | - Xiaochao Zhang
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168 Chunrongxi Road, Chenggong District, Kunming, 650500, Yunnan, People's Republic of China
| | - Yuqin Zhao
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168 Chunrongxi Road, Chenggong District, Kunming, 650500, Yunnan, People's Republic of China
| | - Zhiqiang Shen
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168 Chunrongxi Road, Chenggong District, Kunming, 650500, Yunnan, People's Republic of China.
| | - Peng Chen
- School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, No. 1168 Chunrongxi Road, Chenggong District, Kunming, 650500, Yunnan, People's Republic of China.
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Chen S, Jia L, Zhang S, Zheng Y, Zhou Y. DEPTOR regulates osteogenic differentiation via inhibiting MEG3-mediated activation of BMP4 signaling and is involved in osteoporosis. Stem Cell Res Ther 2018; 9:185. [PMID: 29973283 PMCID: PMC6033203 DOI: 10.1186/s13287-018-0935-9] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Revised: 05/02/2018] [Accepted: 06/18/2018] [Indexed: 02/07/2023] Open
Abstract
Background The mammalian target of rapamycin (mTOR) pathway plays a significant role in osteogenic differentiation and bone maintenance. As the only known endogenous inhibitor of mTOR function, DEP domain containing mTOR interacting protein (DEPTOR) is potentially involved in stem cell differentiation, although the pathophysiological significance and its molecular mechanisms remain unclear. The present study aimed to elucidate the effects of DEPTOR on the progress of osteoporosis and investigate the underlying molecular mechanisms of osteogenic regulation. Methods An ovariectomy mouse model with decreased bone formation and osteogenic induction with bone marrow mesenchymal stem cells (BMSCs) were used to investigate the relationship between DEPTOR and osteogenic events. A loss-of-function investigation was then performed to explore the role of DEPTOR in the osteogenic differentiation of BMSCs both in vitro and in vivo. Finally, long noncoding RNA (lncRNA) and mRNA sequences were investigated to reveal the underlying mechanisms of DEPTOR in osteogenic regulation. RNA interference, western blotting, and chromatin immunoprecipitation assays were performed for further mechanistic determination. Results The results indicated that DEPTOR contributes to the progress of osteoporosis, and higher expression of Deptor was observed in osteoporotic bones. The expression of DEPTOR was reduced during the osteogenic differentiation of BMSCs, and knockdown of DEPTOR promoted BMSC osteogenesis in vitro and in vivo. lncRNA and mRNA sequences indicated that knockdown of DEPTOR upregulated the expression of maternally expressed 3 (nonprotein coding) (MEG3), which subsequently activated bone morphogenetic protein 4 (BMP4) signaling. Furthermore, DEPTOR could bind to a specific region (− 1000 bp ~ 0) of the MEG3 promoter to regulate its transcription, and inhibition of MEG3 reduced BMP4 activation triggered by DEPTOR knockdown. Conclusions Taken together, our study revealed a novel function of DEPTOR in osteogenic differentiation by inhibiting MEG3-mediated activation of BMP4 signaling, which suggested that DEPTOR could be a therapeutic target for bone loss diseases and skeletal tissue regeneration. Electronic supplementary material The online version of this article (10.1186/s13287-018-0935-9) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Si Chen
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China
| | - Lingfei Jia
- Department of Oral and Maxillofacial Surgery, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China.,Central Laboratory, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China.,National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China
| | - Shan Zhang
- Central Laboratory, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China
| | - Yunfei Zheng
- Department of Orthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China. .,National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China.
| | - Yongsheng Zhou
- Department of Prosthodontics, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China. .,National Engineering Lab for Digital and Material Technology of Stomatology, Peking University School and Hospital of Stomatology, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China. .,National Clinical Research Center for Oral Diseases, 22 Zhongguancun South Avenue, Haidian District, Beijing, 100081, China.
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ZOFKOVA I, BLAHOS J. New Molecules Modulating Bone Metabolism – New Perspectives in the Treatment of Osteoporosis. Physiol Res 2017; 66:S341-S347. [DOI: 10.33549/physiolres.933720] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
In this review the authors outline traditional antiresorptive pharmaceuticals, such as bisphosphonates, monoclonal antibodies against RANKL, SERMs, as well as a drug with an anabolic effect on the skeleton, parathormone. However, there is also a focus on non-traditional strategies used in therapy for osteolytic diseases. The newest antiosteoporotic pharmaceuticals increase osteoblast differentiation via BMP signaling (harmine), or stimulate osteogenic differentiation of mesenchymal stem cells through Wnt/β-catenin (icarrin, isoflavonoid caviunin, or sulfasalazine). A certain promise in the treatment of osteoporosis is shown by molecules targeting non-coding microRNAs (which are critical for osteoclastogenesis) or those stimulating osteoblast activity via epigenetic mechanisms. Vitamin D metabolites have specific antiosteoporotic potencies, modulating the skeleton not only via mineralization, but markedly also through the direct effects on the bone microstructure.
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Affiliation(s)
- I. ZOFKOVA
- Institute of Endocrinology, Prague, Czech Republic
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