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Xue B, Cao W, Zhao H, Zhang B, Liu J, Zhang H, Qi H, Zhou Q. Nanocrystal hydroxyapatite carrying traditional Chinese medicine for osteogenic differentiation. Colloids Surf B Biointerfaces 2024; 244:114186. [PMID: 39226849 DOI: 10.1016/j.colsurfb.2024.114186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2024] [Revised: 08/24/2024] [Accepted: 08/27/2024] [Indexed: 09/05/2024]
Abstract
Developing biomaterials with high osteogenic properties is crucial for achieving rapid bone repair and regeneration. This study focuses on the application of nanocrystal hydroxyapatite (nHAp) as a drug carrier to load Fu Yuan Huo Xue Decoction (FYHXD), a traditional Chinese medicine derived from Angelica sinensis, aiming to achieve improved efficacy in treating bone diseases such as osteoporosis. Through a facile physical adsorption approach, the FTIR result emerges new characteristic absorption peaks in the range of 1200-950 cm-1, proving the successful absorption of FYHXD onto the nHAp with a loading efficiency of 39.76 %. The modified nHAp exhibits a similar shape to the bone-derived hydroxyapatite nanocrystals, and their diameter increases slightly after modification. The drug release assay implies the rapid release of FYHXD in the first 10 h, followed by a continuously slow release within 70 h. The developed nHAp effectively enhances the adhesion, spreading, and proliferation of MC3T3-E1 cells in vitro, and significantly promotes their osteogenic differentiation, as indicated by increased alkaline phosphatase activity. Overall, the biocomposites hold great promise as active ingredients for integration into bone-associated biomaterials, offering the potential to stimulate spontaneous osteogenesis without requiring exogenous osteogenic factors.
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Affiliation(s)
- Bo Xue
- Department of Bone, Huangdao District Central Hospital, Qingdao 266555, China; Qingdao Key Laboratory of Materials for Tissue Repair and Rehabilitation, Shandong Engineering Research Center for Tissue Rehabilitation Materials and Devices, School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao 266113, China
| | - Wen Cao
- School of Medicine, Southern University of Science and Technology, Shenzhen 518055, China
| | - Hong Zhao
- Department of Bone, Huangdao District Central Hospital, Qingdao 266555, China
| | - Bingqiang Zhang
- Qingdao Key Laboratory of Cancer and Immune Cells, Qingdao Restore Medical Testing Laboratory Co., Ltd., Qingdao, Shandong 266111, PR China
| | - Jia Liu
- Department of Bone, Huangdao District Central Hospital, Qingdao 266555, China
| | - Huixin Zhang
- Qingdao Key Laboratory of Materials for Tissue Repair and Rehabilitation, Shandong Engineering Research Center for Tissue Rehabilitation Materials and Devices, School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao 266113, China.
| | - Hongzhao Qi
- Institute of Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao 266021, China.
| | - Qihui Zhou
- Qingdao Key Laboratory of Materials for Tissue Repair and Rehabilitation, Shandong Engineering Research Center for Tissue Rehabilitation Materials and Devices, School of Rehabilitation Sciences and Engineering, University of Health and Rehabilitation Sciences, Qingdao 266113, China.
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Yang W, Wang M, Hu J, Mo K, Xie X. The complex association between the immune system and the skeletal system in osteoporosis: A study of single-cell RNA sequencing. Int Immunopharmacol 2024; 138:112611. [PMID: 38976947 DOI: 10.1016/j.intimp.2024.112611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 06/28/2024] [Accepted: 06/30/2024] [Indexed: 07/10/2024]
Abstract
OBJECTIVE Osteoporosis (OP) is a disease characterized by decreased bone mass, deteriorated microstructure, and increased fragility and fracture risk. The diagnosis and prevention of OP and its complications have become major public health challenges. Therefore, exploring the complex ecological connections between the immune and skeletal systems may provide new insights for clinical prevention and treatment strategies. METHODS First, we performed single-cell RNA sequencing on human lumbar lamina tissue and conducted clustering and subgroup analysis of quality-controlled single-cell transcriptome data to identify target subgroups. Subsequently, enrichment analysis and pseudotime analysis were performed. In addition, we conducted in-depth studies on the gene regulatory network between different cell subgroups and the communication between bone immune cells. RESULTS In this study, we identified several cell subgroups that may be involved in the progression of OP. For example, the CCL4+ NKT and CXCL8+ neutrophils subgroups promote OP progression by mediating an inflammatory environment that disrupts bone homeostasis, and the MNDA+ Mac subgroup promotes osteoclast differentiation to promote OP. Moreover, the TNFAIP6+ Obl, NR4A2+ B and HMGN2+ erythrocyte subgroups promoted the balance of bone metabolism and suppressed OP. In the cell communication network, Obl closely interacts with immune cell subgroups through the CXCR4-CXCL12, CTGF-ITGB2, and TNFSF14-TNFRSF14 axes. CONCLUSION Our research revealed specific subgroups and intercellular interactions that play crucial roles in the pathogenesis of OP, providing potential new insights for more precise therapeutic interventions for OP.
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Affiliation(s)
- Weiwei Yang
- Department of Gynecology, The Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, People's Republic of China
| | - Mingbo Wang
- Department of Orthopedics, The Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, People's Republic of China
| | - Juzheng Hu
- Department of Orthopedics, The Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, People's Republic of China; Department of Orthopedics, Liuzhou Worker's Hospital, Liuzhou, Guangxi 545005, People's Republic of China
| | - Ke Mo
- Clinical Research Center, The Second Affiliated Hospital of Guangxi Medical University, Nanning 530007, People's Republic of China; Systems Biology Research Center, Biology Institute, Guangxi Academy of Sciences, Nanning 530007, Guangxi, People's Republic of China
| | - Xiangtao Xie
- Department of Orthopedics, The Fourth Affiliated Hospital of Guangxi Medical University, Liuzhou, Guangxi 545005, People's Republic of China; Department of Orthopedics, Liuzhou Worker's Hospital, Liuzhou, Guangxi 545005, People's Republic of China.
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Wanionok NE, Morel GR, Fernández JM. Osteoporosis and Alzheimer´s disease (or Alzheimer´s disease and Osteoporosis). Ageing Res Rev 2024; 99:102408. [PMID: 38969142 DOI: 10.1016/j.arr.2024.102408] [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: 02/28/2024] [Revised: 07/02/2024] [Accepted: 07/02/2024] [Indexed: 07/07/2024]
Abstract
Alzheimer's disease (AD) and osteoporosis are two diseases that mainly affect elderly people, with increases in the occurrence of cases due to a longer life expectancy. Several epidemiological studies have shown a reciprocal association between both diseases, finding an increase in incidence of osteoporosis in patients with AD, and a higher burden of AD in osteoporotic patients. This epidemiological relationship has motivated the search for molecules, genes, signaling pathways and mechanisms that are related to both pathologies. The mechanisms found in these studies can serve to improve treatments and establish better patient care protocols.
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Affiliation(s)
- Nahuel E Wanionok
- Laboratorio de Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Cs. Exactas. Universidad Nacional de La Plata UNLP-CIC, Argentina
| | - Gustavo R Morel
- Biochemistry Research Institute of La Plata "Professor Doctor Rodolfo R. Brenner" (INIBIOLP), Argentina
| | - Juan M Fernández
- Laboratorio de Osteopatías y Metabolismo Mineral (LIOMM), Facultad de Cs. Exactas. Universidad Nacional de La Plata UNLP-CIC, Argentina.
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Zhu N, Hou J, Si J, Yang N, Chen B, Wei X, Zhu L. SIRT1 and ZNF350 as novel biomarkers for osteoporosis: a bioinformatics analysis and experimental validation. Mol Biol Rep 2024; 51:530. [PMID: 38637425 DOI: 10.1007/s11033-024-09406-8] [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: 09/10/2023] [Accepted: 02/29/2024] [Indexed: 04/20/2024]
Abstract
BACKGROUND Osteoporosis (OP) is characterized by bone mass decrease and bone tissue microarchitectural deterioration in bone tissue. This study identified potential biomarkers for early diagnosis of OP and elucidated the mechanism of OP. METHODS Gene expression profiles were downloaded from Gene Expression Omnibus (GEO) for the GSE56814 dataset. A gene co-expression network was constructed using weighted gene co-expression network analysis (WGCNA) to identify key modules associated with healthy and OP samples. Functional enrichment analysis was conducted using the R clusterProfiler package for modules to construct the transcriptional regulatory factor networks. We used the "ggpubr" package in R to screen for differentially expressed genes between the two samples. Gene set variation analysis (GSVA) was employed to further validate hub gene expression levels between normal and OP samples using RT-PCR and immunofluorescence to evaluate the potential biological changes in various samples. RESULTS There was a distinction between the normal and OP conditions based on the preserved significant module. A total of 100 genes with the highest MM scores were considered key genes. Functional enrichment analysis suggested that the top 10 biological processes, cellular component and molecular functions were enriched. The Toll-like receptor signaling pathway, TNF signaling pathway, PI3K-Akt signaling pathway, osteoclast differentiation, JAK-STAT signaling pathway, and chemokine signaling pathway were identified by Kyoto Encyclopedia of Genes and Genomes pathway analysis. SIRT1 and ZNF350 were identified by Wilcoxon algorithm as hub differentially expressed transcriptional regulatory factors that promote OP progression by affecting oxidative phosphorylation, apoptosis, PI3K-Akt-mTOR signaling, and p53 pathway. According to RT-PCR and immunostaining results, SIRT1 and ZNF350 levels were significantly higher in OP samples than in normal samples. CONCLUSION SIRT1 and ZNF350 are important transcriptional regulatory factors for the pathogenesis of OP and may be novel biomarkers for OP treatment.
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Affiliation(s)
- Naiqiang Zhu
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, China
- Department of Minimally Invasive Spinal Surgery, The Affiliated Hospital of Chengde Medical University, Chengde, 067000, China
| | - Jingyi Hou
- Chengde Medical University, Chengde, 067000, China
| | - Jingyuan Si
- South Operation Department, The Affiliated Hospital of Chengde Medical University, Chengde, 067000, China
| | - Ning Yang
- Central Laboratory, The Affiliated Hospital of Chengde Medical University, Chengde, 067000, China
| | - Bin Chen
- Department of Minimally Invasive Spinal Surgery, The Affiliated Hospital of Chengde Medical University, Chengde, 067000, China
| | - Xu Wei
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, China.
| | - Liguo Zhu
- Wangjing Hospital, China Academy of Chinese Medical Sciences, Beijing, 100102, China.
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Weng S, Fu H, Xu S, Li J. Validating core therapeutic targets for osteoporosis treatment based on integrating network pharmacology and informatics. SLAS Technol 2024; 29:100122. [PMID: 38364892 DOI: 10.1016/j.slast.2024.100122] [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: 05/17/2023] [Revised: 01/24/2024] [Accepted: 02/13/2024] [Indexed: 02/18/2024]
Abstract
OBJECTIVE Our goal was to find metabolism-related lncRNAs that were associated with osteoporosis (OP) and construct a model for predicting OP progression using these lncRNAs. METHODS The GEO database was employed to obtain gene expression profiles. The WGCNA technique and differential expression analysis were used to identify hypoxia-related lncRNAs. A Lasso regression model was applied to select 25 hypoxia-related genes, from which a classification model was created. Its robust classification performance was confirmed with an area under the ROC curve close to 1, as verified on the validation set. Concurrently, we constructed a ceRNA network based on these genes to unveil potential regulatory processes. Biologically active compounds of STZYD were identified using the Traditional Chinese Medicine System Pharmacology Database and Analysis Platform (TCMSP) database. BATMAN was used to identify its targets, and we obtained OP-related genes from Malacards and DisGeNET, followed by identifying intersection genes with metabolism-related genes. A pharmacological network was then constructed based on the intersecting genes. The pharmacological network was further integrated with the ceRNA network, resulting in the creation of a comprehensive network that encompasses herb-active components, pathways, lncRNAs, miRNAs, and targets. Expression levels of hypoxia-related lncRNAs in mononuclear cells isolated from peripheral blood of OP and normal patients were subsequently validated using quantitative real-time PCR (qRT-PCR). Protein levels of RUNX2 were determined through a western blot assay. RESULTS CBFB, GLO1, NFKB2 and PIK3CA were identified as central therapeutic targets, and ADD3-AS1, DTX2P1-UPK3BP1-PMS2P11, TTTY1B, ZNNT1 and LINC00623 were identified as core lncRNAs. CONCLUSIONS Our work uncovers a possible therapeutic mechanism for STZYD, providing a potential therapeutic target for OP. In addition, a prediction model of metabolism-related lncRNAs of OP progression was constructed to provide a reference for the diagnosis of OP patients.
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Affiliation(s)
- Shiyang Weng
- Department of Trauma Center, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
| | - Huichao Fu
- Department of Trauma Center, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai 201600, China
| | - Shengxiang Xu
- Department of Orthopedic Surgery, the Second Affiliated Hospital, Zhejiang University School of Medicine, Zhejiang 310009, China.
| | - Jieruo Li
- Department of Sport Medicine, Institute of Orthopedics Diseases and Center for Joint Surgery and Sports Medicine, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China.
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Li M, Wang X, Guo M, Zhang W, Li T, Zheng J. Identification of potential cell death-related biomarkers for diagnosis and treatment of osteoporosis. BMC Musculoskelet Disord 2024; 25:235. [PMID: 38528539 DOI: 10.1186/s12891-024-07349-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 03/11/2024] [Indexed: 03/27/2024] Open
Abstract
BACKGROUND This study aimed to identify potential biomarkers for the diagnosis and treatment of osteoporosis (OP). METHODS Data sets were downloaded from the Gene Expression Omnibus database, and differentially programmed cell death-related genes were screened. Functional analyses were performed to predict the biological processes associated with these genes. Least absolute shrinkage and selection operator (LASSO), support vector machine (SVM), and random forest (RF) machine learning algorithms were used to screen for characteristic genes, and receiver operating characteristics were used to evaluate the diagnosis of disease characteristic gene values. Gene set enrichment analysis (GSEA) and single-sample GSEA were conducted to analyze the correlation between characteristic genes and immune infiltrates. Cytoscape and the Drug Gene Interaction Database (DGIdb) were used to construct the mitochondrial RNA-mRNA-transcription factor network and explore small-molecule drugs. Reverse transcription real-time quantitative PCR (RT-qPCR) analysis was performed to evaluate the expression of biomarker genes in clinical samples. RESULTS In total, 25 differential cell death genes were identified. Among these, two genes were screened using the LASSO, SVM, and RF algorithms as characteristic genes, including BRSK2 and VPS35. In GSE56815, the area under the receiver operating characteristic curve of BRSK2 was 0.761 and that of VPS35 was 0.789. In addition, immune cell infiltration analysis showed that BRSK2 positively correlated with CD56dim natural killer cells and negatively correlated with central memory CD4 + T cells. Based on the data from DGIdb, hesperadin was associated with BRSK2, and melagatran was associated with VPS35. BRSK2 and VPS35 were expectably upregulated in OP group compared with controls (all p < 0.05). CONCLUSIONS BRSK2 and VPS35 may be important diagnostic biomarkers of OP.
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Affiliation(s)
- Mingliang Li
- Department of Joint and Sports Medicine, Weifang Sunshine Union Hospital, Weifang, Shandong Province, 261000, China
| | - Xue Wang
- Department of endocrinology, Weifang Sunshine Union Hospital, Weifang, Shandong Province, 261000, China
| | - Mingbo Guo
- Department of Joint and Sports Medicine, Weifang Sunshine Union Hospital, Weifang, Shandong Province, 261000, China
| | - Wenlong Zhang
- Department of Joint and Sports Medicine, Weifang Sunshine Union Hospital, Weifang, Shandong Province, 261000, China
| | - Taotao Li
- Department of Joint and Sports Medicine, Weifang Sunshine Union Hospital, Weifang, Shandong Province, 261000, China
| | - Jinyang Zheng
- Department of spine 1, Weifang Sunshine Union Hospital, No. 9000, Yingqian Street, High-tech Zone, Weifang, Shandong Province, 261000, China.
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Lai Z, Li M, Yang X, Xian Z. Knockdown of the UL-16 binding protein 1 promotes osteoblast differentiation of human mesenchymal stem cells by activating the SMAD2/3 pathway. BMC Musculoskelet Disord 2024; 25:213. [PMID: 38481217 PMCID: PMC10936096 DOI: 10.1186/s12891-024-07341-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2023] [Accepted: 03/06/2024] [Indexed: 03/17/2024] Open
Abstract
Osteoporosis is caused by the imbalance of osteoblasts and osteoclasts. The regulatory mechanisms of differentially expressed genes (DEGs) in pathogenesis of osteoporosis are of significant and needed to be further investigated. GSE100609 dataset downloaded from Gene Expression Omnibus (GEO) database was used to identified DEGs in osteoporosis patients. KEGG analysis was conducted to demonstrate signaling pathways related to enriched genes. Osteoporosis patients and the human mesenchymal stem cells (hMSCs) were obtained for in vivo and in vitro resaerch. Lentivirus construction and viral infection was used to knockdown genes. mRNA expression and protein expression were detected via qRT-PCR and western blot assay separately. Alkaline phosphatase (ALP) activity detection, alizarin Red S (ARS) staining, and expression of bone morphogenetic protein 2 (BMP2), osteocalcin (OCN) and Osterix were evaluated to determine osteoblast differentiation capacity. UL-16 binding protein 1 (ULBP1) gene was upregulated in osteoporosis and downregulated in differentiated hMSCs. Knockdown of ULBP1 increased ALP activity, mineralization ability evaluated by ARS staining, expression of BMP2, OCN and Osterix in differentiated hMSCs. Furthermore, rescue experiment demonstrated that suppressed ULBP1 boosted osteoblast differentiation by activating TNF-β signaling pathway. Knockdown of ULBP1 gene could promoted osteoblast differentiation by activating TNF-β signaling pathway in differentiated hMSCs. ULBP1 may be a the Achilles' heel of osteoporosis, and suppression of ULBP1 could be a promising treatment for osteoporosis.
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Affiliation(s)
- Zhen Lai
- Department of Orthopedic Surgery, Huadu District People's Hospital of Guangzhou, 48 Xinhua Road, Xinhua Street, Huadu District, Guangzhou, 510800, Guangdong, China.
| | - Mingming Li
- Shiling Town Health Center, 19 Qiling Street, Huadu District, Guangzhou, 510800, Guangdong, China
| | - Xiaodong Yang
- Department of Orthopedic Surgery, Huadu District People's Hospital of Guangzhou, 48 Xinhua Road, Xinhua Street, Huadu District, Guangzhou, 510800, Guangdong, China
| | - Zhenjie Xian
- Department of Orthopedic Surgery, Huadu District People's Hospital of Guangzhou, 48 Xinhua Road, Xinhua Street, Huadu District, Guangzhou, 510800, Guangdong, China
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Zhang C, Wang Y, Wu G, Sun N, Bai H, Li X, Han S, Zhou H, Qi R, Zhang J. RPL35A promotes the progression of cholangiocarcinoma by mediating HSPA8 ubiquitination. Biol Direct 2024; 19:16. [PMID: 38395908 PMCID: PMC10885515 DOI: 10.1186/s13062-024-00453-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2023] [Accepted: 01/09/2024] [Indexed: 02/25/2024] Open
Abstract
BACKGROUND Cholangiocarcinoma (CCA) is a biliary epithelial malignant tumor with an increasing incidence worldwide. Therefore, further understanding of the molecular mechanisms of CCA progression is required to identify new therapeutic targets. METHODS The expression of RPL35A in CCA and para-carcinoma tissues was detected by immunohistochemical staining. IP-MS combined with Co-IP identified downstream proteins regulated by RPL35A. Western blot and Co-IP of CHX or MG-132 treated CCA cells were used to verify the regulation of HSPA8 protein by RPL35A. Cell experiments and subcutaneous tumorigenesis experiments in nude mice were performed to evaluate the effects of RPL35A and HSPA8 on the proliferation, apoptosis, cell cycle, migration of CCA cells and tumor growth in vivo. RESULTS RPL35A was significantly upregulated in CCA tissues and cells. RPL35A knockdown inhibited the proliferation and migration of HCCC-9810 and HUCCT1 cells, induced apoptosis, and arrested the cell cycle in G1 phase. HSPA8 was a downstream protein of RPL35A and overexpressed in CCA. RPL35A knockdown impaired HSPA8 protein stability and increased HSPA8 protein ubiquitination levels. RPL35A overexpression promoted CCA cell proliferation and migration. HSPA8 knockdown inhibited CCA cell proliferation and migration, and reversed the promoting effect of RPL35A. Furthermore, RPL35A promoted tumor growth in vivo. In contrast, HSPA8 knockdown suppressed tumor growth, while was able to restore the effects of RPL35A overexpression. CONCLUSION RPL35A was upregulated in CCA tissues and promoted the progression of CCA by mediating HSPA8 ubiquitination.
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Affiliation(s)
- Chengshuo Zhang
- Hepatobiliary Surgery Department, First Hospital of China Medical University, No.155, Nanjingbei street, 110001, Shenyang, Liaoning Province, P. R. China
| | - Yu Wang
- Department of General Surgery, Anshan Central Hospital, No.51, South Zhonghua Road, Tiedong District, 114008, Anshan, Liaoning Province, China
| | - Gang Wu
- Hepatobiliary Surgery Department, First Hospital of China Medical University, No.155, Nanjingbei street, 110001, Shenyang, Liaoning Province, P. R. China
| | - Ning Sun
- Hepatobiliary Surgery Department, First Hospital of China Medical University, No.155, Nanjingbei street, 110001, Shenyang, Liaoning Province, P. R. China
| | - Han Bai
- Hepatobiliary Surgery Department, First Hospital of China Medical University, No.155, Nanjingbei street, 110001, Shenyang, Liaoning Province, P. R. China
| | - Xuejian Li
- Hepatobiliary Surgery Department, First Hospital of China Medical University, No.155, Nanjingbei street, 110001, Shenyang, Liaoning Province, P. R. China
| | - Shuai Han
- Hepatobiliary Surgery Department, First Hospital of China Medical University, No.155, Nanjingbei street, 110001, Shenyang, Liaoning Province, P. R. China
| | - Haonan Zhou
- Hepatobiliary Surgery Department, First Hospital of China Medical University, No.155, Nanjingbei street, 110001, Shenyang, Liaoning Province, P. R. China
| | - Ruizhao Qi
- Senior Department of General Surgery, the First Medical Center of Chinese PLA General Hospital, No.28, Fuxing Road, Haidian District, 100039, Beijing, China.
| | - Jialin Zhang
- Hepatobiliary Surgery Department, First Hospital of China Medical University, No.155, Nanjingbei street, 110001, Shenyang, Liaoning Province, P. R. China.
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Minbo J, Feng C, Wen H, Jamil M, Zhang H, Abdel-Maksoud MA, Zakri AM, Almanaa TN, Alfuraydi AA, Almunqedhi BM. Up-regulated and hypomethylated genes are causative factors and diagnostic markers of osteoporosis. Am J Transl Res 2023; 15:6042-6057. [PMID: 37969207 PMCID: PMC10641362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2023] [Accepted: 09/25/2023] [Indexed: 11/17/2023]
Abstract
BACKGROUND Due to the lack of sensitive diagnostic biomarkers for osteoporosis (OP), there is an urgent need to identify and uncover biomarkers associated with the disease in order to facilitate early clinical diagnosis and effective intervention strategies. METHODS GEO2R was employed to conduct a screening of differentially expressed genes (DEGs) within the transcriptome sequencing data obtained from blood samples of OP patients within the GSE163849 dataset. Subsequently, we conducted expression confirmation of the identified DEGs using an additional dataset, GSE35959. To further explore Gene Ontology (GO), Kyoto Encyclopedia of Genes and Genomes (KEGG) enrichment, MicroRNA (miRNA) interactions, and drug predictions, we employed the DAVID, miRTarBase, and DrugBank databases. For validation purposes, clinical OP samples paired with normal controls were collected from the Pakistani population. Reverse transcription-quantitative polymerase chain reaction (RT-qPCR) was employed to assess the expression levels of DEGs and miRNA, while targeted bisulfite sequencing (bisulfite-seq) analysis was used to investigate methylation patterns. DNA and RNA from clinical OP and normal control samples were extracted using appropriate methods. RESULTS Out of total identified 269 DEGs, EGFR (epidermal growth factor receptor), HMOX1 (heme oxygenase-1), PGR (progesterone receptor), CXCL10 (C-X-C motif chemokine ligand 10), CCL5 (C-C motif chemokine ligand 5), and IL12B (interleukin 12B) were prioritized as top DEGs in OP patients. Expression validation of these genes on additional Gene Expression Omnibus (GEO) dataset and Pakistani OP patients revealed consistent significant up-regulation of these genes in OP patients. Receiver operating characteristic (ROC) analysis demonstrated that these DEGs displayed considerable diagnostic accuracy for detecting OP. Targeted bisulfite-seq analysis further revealed that EGFR, HMOX1, PGR, CXCL10, CCL5, and IL12B were hypomethylated in OP patients. Moreover, has-miR-27a-5p, a common expression regulator of the EGFR, HMOX1, PGR, CXCL10, CCL5, and IL12B was also significantly down-regulated in OP patients. CONCLUSION The DEGs that have been identified hold significant potential for the future development of diagnostic and treatment approaches for OP in preclinical and clinical applications.
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Affiliation(s)
- Jiang Minbo
- Department of Orthopedic, Shanghai Songjiang District Central HospitalShanghai 201699, China
| | - Chen Feng
- Department of Orthopedics, Hongqi HospitalMuDanjiang 157011, Heilongjiang, China
| | - Hongli Wen
- Department of Foreign Language, MuDanjiang Medical UniversityMuDanjiang 157011, Heilongjiang, China
| | - Muhammad Jamil
- PARC Arid Zone Research CenterDera Ismail Khan 29050, Pakistan
| | - Heng Zhang
- Department of Orthopedic, Shanghai Songjiang District Central HospitalShanghai 201699, China
| | - Mostafa A Abdel-Maksoud
- Department of Botany and Microbiology, College of Science, King Saud UniversityP.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Adel M Zakri
- Department of Plant Production, College of Food and Agricultural Sciences, King Saud UniversityRiyadh 11451, Saudi Arabia
| | - Taghreed N Almanaa
- Department of Botany and Microbiology, College of Science, King Saud UniversityP.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Akram A Alfuraydi
- Department of Botany and Microbiology, College of Science, King Saud UniversityP.O. Box 2455, Riyadh 11451, Saudi Arabia
| | - Bandar M Almunqedhi
- Department of Botany and Microbiology, College of Science, King Saud UniversityP.O. Box 2455, Riyadh 11451, Saudi Arabia
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Shen X, Lan C, Lin Y, Zhang F, Zhang Y, Chen M, Yan S. Suppression of TLR4 prevents diabetic bone loss by regulating FTO-mediated m 6A modification. Int Immunopharmacol 2023; 122:110510. [PMID: 37413932 DOI: 10.1016/j.intimp.2023.110510] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 06/08/2023] [Accepted: 06/12/2023] [Indexed: 07/08/2023]
Abstract
Toll-like receptor-4 (TLR4) has been implicated in the development and progression of diabetic osteoporosis. However, the mechanisms underlying TLR4-regulated bone metabolism in diabetes are yet to be fully understood. Epigenetic modifications have been indicated as a possible mechanism leading to increased risk of osteoporosis and bone fracture. As N6-methyladenosine (m6A) is the most common epigenetic modification in eukaryotic mRNAs, we hypothesized that TLR4 regulates m6A modification in bone tissues of diabetic rats, thereby potentially explaining the pathogenesis of diabetic bone loss. m6A sequencing (m6A-seq) was performed in samples of the femur of TLR4-wild type (TLR4WT) and TLR4-knockout (TLR4KO) diabetic rats to identify genes with differential m6A modifications that may be associated with the bone loss phenotype. We found that in TLR4KO rats, the rapid weight loss of diabetic rats was prevented, and bone mineral density (BMD) was significantly increased. m6A-seq and Gene Ontology enrichment analysis revealed that m6A-modified genes in the femur of TLR4KO diabetic rats were associated with regulation of biological processes such as osteoclast differentiation. qRT-PCR analysis on the expression levels of the m6A-modified methyltransferases and demethylases demonstrated that only the m6A demethylase fat mass and obesity-associated protein(FTO)was decreased. Using an osteoclast cell model, we confirmed that TLR4-mediated osteoclast differentiation was induced by glycolipid toxicity via inhibition of FTO expression. Taken together, these results suggest that inhibition of TLR4 may prevent diabetic bone loss via regulation of FTO-mediated m6A modification.
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Affiliation(s)
- Ximei Shen
- Department of Endocrinology, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Department of Endocrinology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China; Clinical Research Center for Metabolic Diseases of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Fujian Key Laboratory of Glycolipid and Bone Mineral Metabolism, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Diabetes Research Institute of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Metabolic Diseases Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Chao Lan
- Department of Endocrinology, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Department of Endocrinology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China; Clinical Research Center for Metabolic Diseases of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Fujian Key Laboratory of Glycolipid and Bone Mineral Metabolism, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Diabetes Research Institute of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Metabolic Diseases Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Youfen Lin
- Department of Endocrinology, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Department of Endocrinology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China; Clinical Research Center for Metabolic Diseases of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Fujian Key Laboratory of Glycolipid and Bone Mineral Metabolism, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Diabetes Research Institute of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Metabolic Diseases Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Fuyashi Zhang
- Department of Endocrinology, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Yongze Zhang
- Department of Endocrinology, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Department of Endocrinology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China; Clinical Research Center for Metabolic Diseases of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Fujian Key Laboratory of Glycolipid and Bone Mineral Metabolism, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Diabetes Research Institute of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Metabolic Diseases Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Mingyun Chen
- Department of Endocrinology, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Department of Endocrinology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China; Clinical Research Center for Metabolic Diseases of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Fujian Key Laboratory of Glycolipid and Bone Mineral Metabolism, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Diabetes Research Institute of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Metabolic Diseases Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China
| | - Sunjie Yan
- Department of Endocrinology, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Department of Endocrinology, National Regional Medical Center, Binhai Campus of the First Affiliated Hospital, Fujian Medical University, Fuzhou 350212, China; Clinical Research Center for Metabolic Diseases of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Fujian Key Laboratory of Glycolipid and Bone Mineral Metabolism, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Diabetes Research Institute of Fujian Province, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China; Metabolic Diseases Research Institute, The First Affiliated Hospital, Fujian Medical University, Fuzhou 350005, China.
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11
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Wang H, Li S, Chen B, Wu M, Yin H, Shao Y, Wang J. Exploring the shared gene signatures of smoking-related osteoporosis and chronic obstructive pulmonary disease using machine learning algorithms. Front Mol Biosci 2023; 10:1204031. [PMID: 37251077 PMCID: PMC10213920 DOI: 10.3389/fmolb.2023.1204031] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 05/04/2023] [Indexed: 05/31/2023] Open
Abstract
Objectives: Cigarette smoking has been recognized as a predisposing factor for both osteoporosis (OP) and chronic obstructive pulmonary disease (COPD). This study aimed to investigate the shared gene signatures affected by cigarette smoking in OP and COPD through gene expression profiling. Materials and methods: Microarray datasets (GSE11784, GSE13850, GSE10006, and GSE103174) were obtained from Gene Expression Omnibus (GEO) and analyzed for differentially expressed genes (DEGs) and weighted gene co-expression network analysis (WGCNA). Least absolute shrinkage and selection operator (LASSO) regression method and a random forest (RF) machine learning algorithm were used to identify candidate biomarkers. The diagnostic value of the method was assessed using logistic regression and receiver operating characteristic (ROC) curve analysis. Finally, immune cell infiltration was analyzed to identify dysregulated immune cells in cigarette smoking-induced COPD. Results: In the smoking-related OP and COPD datasets, 2858 and 280 DEGs were identified, respectively. WGCNA revealed 982 genes strongly correlated with smoking-related OP, of which 32 overlapped with the hub genes of COPD. Gene Ontology (GO) enrichment analysis showed that the overlapping genes were enriched in the immune system category. Using LASSO regression and RF machine learning, six candidate genes were identified, and a logistic regression model was constructed, which had high diagnostic values for both the training set and external validation datasets. The area under the curves (AUCs) were 0.83 and 0.99, respectively. Immune cell infiltration analysis revealed dysregulation in several immune cells, and six immune-associated genes were identified for smoking-related OP and COPD, namely, mucosa-associated lymphoid tissue lymphoma translocation protein 1 (MALT1), tissue-type plasminogen activator (PLAT), sodium channel 1 subunit alpha (SCNN1A), sine oculis homeobox 3 (SIX3), sperm-associated antigen 9 (SPAG9), and vacuolar protein sorting 35 (VPS35). Conclusion: The findings suggest that immune cell infiltration profiles play a significant role in the shared pathogenesis of smoking-related OP and COPD. The results could provide valuable insights for developing novel therapeutic strategies for managing these disorders, as well as shedding light on their pathogenesis.
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Affiliation(s)
- Haotian Wang
- Graduate School of Nanjing University of Chinese Medicine, Nanjing, China
| | - Shaoshuo Li
- Department of Traumatology and Orthopedics, Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Baixing Chen
- Department of Development and Regeneration, University of Leuven, Leuven, Belgium
| | - Mao Wu
- Graduate School of Nanjing University of Chinese Medicine, Nanjing, China
- Department of Traumatology and Orthopedics, Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Heng Yin
- Graduate School of Nanjing University of Chinese Medicine, Nanjing, China
- Department of Traumatology and Orthopedics, Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Yang Shao
- Department of Traumatology and Orthopedics, Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
| | - Jianwei Wang
- Graduate School of Nanjing University of Chinese Medicine, Nanjing, China
- Department of Traumatology and Orthopedics, Wuxi Affiliated Hospital of Nanjing University of Chinese Medicine, Wuxi, China
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12
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Fuiten AM, Yoshimoto Y, Shukunami C, Stadler HS. Digits in a dish: An in vitro system to assess the molecular genetics of hand/foot development at single-cell resolution. Front Cell Dev Biol 2023; 11:1135025. [PMID: 36994104 PMCID: PMC10040768 DOI: 10.3389/fcell.2023.1135025] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2022] [Accepted: 02/21/2023] [Indexed: 03/16/2023] Open
Abstract
In vitro models allow for the study of developmental processes outside of the embryo. To gain access to the cells mediating digit and joint development, we identified a unique property of undifferentiated mesenchyme isolated from the distal early autopod to autonomously re-assemble forming multiple autopod structures including: digits, interdigital tissues, joints, muscles and tendons. Single-cell transcriptomic analysis of these developing structures revealed distinct cell clusters that express canonical markers of distal limb development including: Col2a1, Col10a1, and Sp7 (phalanx formation), Thbs2 and Col1a1 (perichondrium), Gdf5, Wnt5a, and Jun (joint interzone), Aldh1a2 and Msx1 (interdigital tissues), Myod1 (muscle progenitors), Prg4 (articular perichondrium/articular cartilage), and Scx and Tnmd (tenocytes/tendons). Analysis of the gene expression patterns for these signature genes indicates that developmental timing and tissue-specific localization were also recapitulated in a manner similar to the initiation and maturation of the developing murine autopod. Finally, the in vitro digit system also recapitulates congenital malformations associated with genetic mutations as in vitro cultures of Hoxa13 mutant mesenchyme produced defects present in Hoxa13 mutant autopods including digit fusions, reduced phalangeal segment numbers, and poor mesenchymal condensation. These findings demonstrate the robustness of the in vitro digit system to recapitulate digit and joint development. As an in vitro model of murine digit and joint development, this innovative system will provide access to the developing limb tissues facilitating studies to discern how digit and articular joint formation is initiated and how undifferentiated mesenchyme is patterned to establish individual digit morphologies. The in vitro digit system also provides a platform to rapidly evaluate treatments aimed at stimulating the repair or regeneration of mammalian digits impacted by congenital malformation, injury, or disease.
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Affiliation(s)
- Allison M. Fuiten
- Research Center, Shriners Children’s, Portland, OR, United States
- Department of Orthopaedics and Rehabilitation, Oregon Health and Science University, Portland, OR, United States
| | - Yuki Yoshimoto
- Department of Molecular Biology and Biochemistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Chisa Shukunami
- Department of Molecular Biology and Biochemistry, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - H. Scott Stadler
- Research Center, Shriners Children’s, Portland, OR, United States
- Department of Orthopaedics and Rehabilitation, Oregon Health and Science University, Portland, OR, United States
- *Correspondence: H. Scott Stadler,
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13
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Abstract
AimsTo investigate the correlations among cytokines and regulatory T cells (T-regs) in ankylosing spondylitis (AS) patients, and their changes after anti-tumour necrosis factor-α (TNF-α) treatment.MethodsWe included 72 AS patients with detailed medical records, disease activity score (Bath Ankylosing Spondylitis Disease Activity Index), functional index (Bath Ankylosing Spondylitis Functional Index), and laboratory data (interleukin (IL)-2, IL-4, IL-10, TNF-α, interferon (IFN)-γ, transforming growth factor (TGF)-β, ESR, and CRP). Their peripheral blood mononuclear cells (PBMCs) were marked with anti-CD4, anti-CD25, and anti-FoxP3 antibodies, and triple positive T cells were gated by flow cytometry as T-regs. Their correlations were calculated and the changes after anti-TNF-α therapy were compared.ResultsThe frequency of T-regs in PBMCs was positively correlated to ESR and CRP in AS (r = 0.35 and 0.43; p = 0.032 and 0.027, respectively), and there was also a significant correlation between serum level of TNF-α and CRP (p = 0.041). The frequency of T-regs in PBMCs positively correlated to serum levels of TNF-α, IL-10, and TGF-β, while IL-2, IL-4, and IFN-γ showed opposite results. After anti-TNF-α treatment, there were significantly lower serum levels of TNF-α, IL-10, TGF-β, and frequency of T-regs in PBMCs among these AS patients (p = 0.026, 0.032, 0.029, and 0.037, respectively).ConclusionIn AS patients, proinflammatory cytokine may give positive feedback to induce more T-reg production and anti-inflammatory cytokine secretion to suppress this inflammatory status, and they can be reversed by anti-TNF-α therapy. However, the detailed interactions among T-regs and complex cytokine networks in autoinflammatory diseases still need more studies and further functional assay.Cite this article: Bone Joint Res 2023;12(2):133–137.
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Affiliation(s)
- Hsien-Tzung Liao
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Faculty of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
- Division of Allergy, Immunology and Rheumatology, Department of Internal Medicine, School of Medicine, College of Medicine, Taipei Medical University, Taipei, Taiwan
| | - Chang-Youh Tsai
- Division of Allergy, Immunology and Rheumatology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan
- Division of Immunology and Rheumatology, Fu Jen Catholic University Hospital, New Taipei City, Taiwan
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Alzheimer's Disease and Impaired Bone Microarchitecture, Regeneration and Potential Genetic Links. Life (Basel) 2023; 13:life13020373. [PMID: 36836731 PMCID: PMC9963274 DOI: 10.3390/life13020373] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 01/08/2023] [Accepted: 01/16/2023] [Indexed: 02/03/2023] Open
Abstract
Alzheimer's Disease (AD) and osteoporosis are both age-related degenerative diseases. Many studies indicate that these two diseases share common pathogenesis mechanisms. In this review, the osteoporotic phenotype of AD mouse models was discussed, and shared mechanisms such as hormonal imbalance, genetic factors, similar signaling pathways and impaired neurotransmitters were identified. Moreover, the review provides recent data associated with these two diseases. Furthermore, potential therapeutic approaches targeting both diseases were discussed. Thus, we proposed that preventing bone loss should be one of the most important treatment goals in patients with AD; treatment targeting brain disorders is also beneficial for osteoporosis.
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Lv N, Zhou Z, He S, Shao X, Zhou X, Feng X, Qian Z, Zhang Y, Liu M. Identification of osteoporosis based on gene biomarkers using support vector machine. Open Med (Wars) 2022; 17:1216-1227. [PMID: 35859791 PMCID: PMC9263892 DOI: 10.1515/med-2022-0507] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Revised: 04/19/2022] [Accepted: 05/15/2022] [Indexed: 11/26/2022] Open
Abstract
Osteoporosis is a major health concern worldwide. The present study aimed to identify effective biomarkers for osteoporosis detection. In osteoporosis, 559 differentially expressed genes (DEGs) were enriched in PI3K-Akt signaling pathway and Foxo signaling pathway. Weighted gene co-expression network analysis showed that green, pink, and tan modules were clinically significant modules, and that six genes (VEGFA, DDX5, SOD2, HNRNPD, EIF5B, and HSP90B1) were identified as “real” hub genes in the protein–protein interaction network, co-expression network, and 559 DEGs. The sensitivity and specificity of the support vector machine (SVM) for identifying patients with osteoporosis was 100%, with an area under curve of 1 in both training and validation datasets. Our results indicated that the current system using the SVM method could identify patients with osteoporosis.
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Affiliation(s)
- Nanning Lv
- Department of Orthopedic Surgery, The Second People's Hospital of Lianyungang, Lianyungang, Jiangsu 222003, China
| | - Zhangzhe Zhou
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, China
| | - Shuangjun He
- Department of Orthopedic Surgery, Affiliated Danyang Hospital of Nantong University, The People's Hospital of Danyang, Danyang, Jiangsu 212300, China
| | - Xiaofeng Shao
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, China
| | - Xinfeng Zhou
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, China
| | - Xiaoxiao Feng
- Department of Orthopedic Surgery, The Second People's Hospital of Lianyungang, Lianyungang, Jiangsu 222003, China
| | - Zhonglai Qian
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, China
| | - Yijian Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, Jiangsu 215000, China
| | - Mingming Liu
- Department of Orthopedic Surgery, The Second People's Hospital of Lianyungang, Lianyungang, Jiangsu 222003, China
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Immune Cell Infiltration Characteristics of Pigmented Villous Nodular Synovitis and Prediction of Potential Diagnostic Markers Based on Bioinformatics. BIOMED RESEARCH INTERNATIONAL 2022; 2022:8708692. [PMID: 35711523 PMCID: PMC9197622 DOI: 10.1155/2022/8708692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/21/2022] [Accepted: 05/21/2022] [Indexed: 11/21/2022]
Abstract
Background Pigmented villous nodular synovitis (PVNS) is a tumor-like proliferative disease characterized by impairment of daily activities, decreased quality of life, and a high recurrence rate. However, the specific pathological mechanisms are still ill-defined and controversial. The purpose of this study was to define potential diagnostic markers and evaluate immune cell infiltration in the pathogenesis of PVNS. Method The expression profile of GSE3698 was reanalyzed in the Gene Expression Omnibus (GEO) database. First, differentially expressed genes (DEGs) were identified using the R package “limma” and analyzed by Gene Ontology (GO) functional annotation and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway enrichment. Next, the DEGs were imported into the STRING database and Cytoscape to construct a protein–protein interaction (PPI) network. Then, cytoHubba and ROC curve analyses were used to determine potential diagnostic biomarkers of PVNS. Finally, we used CIBERSORT to estimate the proportions of 22 immune cell subtypes in PVNS and analyzed the correlation between diagnostic markers and infiltrating immune cells. Result We found 139 DEGs (including 93 upregulated genes and 46 downregulated genes). TYROBP, FCER1G, LAPTM5, and HLA-DPB1 were identified as potential diagnostic biomarkers of PVNS. Immune cell infiltration analysis indicated that neutrophils and M2 macrophages might be associated with the genesis and progression of PVNS. Furthermore, our correlation analysis of diagnostic markers and infiltrating immune cells found that TYROBP, FCER1G, LAPTM5, and HLA-DPB1 were positively correlated with M2 macrophage infiltration and that neutrophils, TYROBP, FCER1G, and LAPTM5 were negatively correlated with plasma cell infiltration. Conclusions We identified TYROBP, FCER1G, LAPTM5, and HLA-DPB1 as potential diagnostic markers for PVNS and concluded that immune cell infiltration plays an important role in the genesis and progression of PVNS.
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17
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Zheng Z, Zhang X, Oh BK, Kim KY. Identification of combined biomarkers for predicting the risk of osteoporosis using machine learning. Aging (Albany NY) 2022; 14:4270-4280. [PMID: 35580864 PMCID: PMC9186773 DOI: 10.18632/aging.204084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2022] [Accepted: 05/07/2022] [Indexed: 11/26/2022]
Abstract
Osteoporosis is a severe chronic skeletal disorder that affects older individuals, especially postmenopausal women. However, molecular biomarkers for predicting the risk of osteoporosis are not well characterized. The aim of this study was to identify combined biomarkers for predicting the risk of osteoporosis using machine learning methods. We merged three publicly available gene expression datasets (GSE56815, GSE13850, and GSE2208) to obtain expression data for 6354 unique genes in postmenopausal women (45 with high bone mineral density and 45 with low bone mineral density). All machine learning methods were implemented in R, with the GEOquery and limma packages, for dataset download and differentially expressed gene identification, and a nomogram for predicting the risk of osteoporosis was constructed. We detected 378 significant differentially expressed genes using the limma package, representing 15 major biological pathways. The performance of the predictive models based on combined biomarkers (two or three genes) was superior to that of models based on a single gene. The best predictive gene set among two-gene sets included PLA2G2A and WRAP73. The best predictive gene set among three-gene sets included LPN1, PFDN6, and DOHH. Overall, we demonstrated the advantages of using combined versus single biomarkers for predicting the risk of osteoporosis. Further, the predictive nomogram constructed using combined biomarkers could be used by clinicians to identify high-risk individuals and in the design of efficient clinical trials to reduce the incidence of osteoporosis.
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Affiliation(s)
- Zhenlong Zheng
- Department of Dermatology, Yanbian University Hospital, Yanji, Jilin Province, China.,Department of Dermatology and Cutaneous Biology Research Institute, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Xianglan Zhang
- Department of Pathology, Yanbian University College of Medicine, Yanji, Jilin Province, China.,Oral Cancer Research Institute, Yonsei University College of Dentistry, Seoul, Korea
| | - Bong-Kyeong Oh
- Institute for the Integration of Medicine and Innovative Technology, Hanyang University College of Medicine, Seoul, Korea
| | - Ki-Yeol Kim
- BK21 PLUS Project, Department of Dental Education, Yonsei University College of Dentistry, Seoul, Korea
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18
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Zhao J, Zhang X, Guan J, Su Y, Jiang J. Identification of key biomarkers in steroid-induced osteonecrosis of the femoral head and their correlation with immune infiltration by bioinformatics analysis. BMC Musculoskelet Disord 2022; 23:67. [PMID: 35042504 PMCID: PMC8767711 DOI: 10.1186/s12891-022-04994-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/18/2021] [Accepted: 12/28/2021] [Indexed: 11/17/2022] Open
Abstract
Objective This study aimed to identify key diagnostic markers and immune infiltration of (SONFH) by bioinformatics analysis. Methods Related SONFH datasets were downloaded from the Gene Expression Omnibus (GEO) database. First, we identified the differentially expressed genes (DEGs) and performed the functional enrichment analysis. Then weighted correlation network analysis (WGCNA) and the MCODE plug-in in Cytoscape were used to identify the diagnostic markers of SONFH. Finally, CIBERSORT was used to analyze the immune infiltration between SONFH and healthy controls, and the correlation between infiltrating immune cells and diagnostic markers was analyzed. Results TYROBP, TLR2, P2RY13, TLR8, HCK, MNDA, and NCF2 may be key diagnostic markers of SONFH. Immune cell infiltration analysis revealed that Memory B cells and activated dendritic cells may be related to the SONFH process. Moreover, HCK was negatively correlated with CD8 T cells, and neutrophils were positively correlated with those key diagnostic markers. Conclusions TYROBP, TLR2, P2RY13, TLR8, HCK, MNDA, and NCF2 may be used as diagnostic markers of SONFH, and immune-related mechanism of SONFH and the potential immunotherapy are worthy of further study. Supplementary Information The online version contains supplementary material available at 10.1186/s12891-022-04994-7.
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Eisa NH, Sudharsan PT, Herrero SM, Herberg SA, Volkman BF, Aguilar-Pérez A, Kondrikov D, Elmansi AM, Reitman C, Shi X, Fulzele S, McGee-Lawrence ME, Isales CM, Hamrick MW, Johnson MH, Chen J, Hill WD. Age-associated changes in microRNAs affect the differentiation potential of human mesenchymal stem cells: Novel role of miR-29b-1-5p expression. Bone 2021; 153:116154. [PMID: 34403754 PMCID: PMC8935397 DOI: 10.1016/j.bone.2021.116154] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Revised: 06/01/2021] [Accepted: 08/11/2021] [Indexed: 11/18/2022]
Abstract
Age-associated osteoporosis is widely accepted as involving the disruption of osteogenic stem cell populations and their functioning. Maintenance of the local bone marrow (BM) microenvironment is critical for regulating proliferation and differentiation of the multipotent BM mesenchymal stromal/stem cell (BMSC) population with age. The potential role of microRNAs (miRNAs) in modulating BMSCs and the BM microenvironment has recently gained attention. However, miRNAs expressed in rapidly isolated BMSCs that are naïve to the non-physiologic standard tissue culture conditions and reflect a more accurate in vivo profile have not yet been reported. Here we directly isolated CD271 positive (+) BMSCs within hours from human surgical BM aspirates without culturing and performed microarray analysis to identify the age-associated changes in BMSC miRNA expression. One hundred and two miRNAs showed differential expression with aging. Target prediction and Kyoto Encyclopedia of Genes and Genomes (KEGG) pathway analyses revealed that the up-regulated miRNAs targeting genes in bone development pathways were considerably enriched. Among the differentially up-regulated miRNAs the novel passenger strand miR-29b-1-5p was abundantly expressed as a mature functional miRNA with aging. This suggests a critical arm-switching mechanism regulates the expression of the miR-29b-1-5p/3p pair shifting the normally degraded arm, miR-29b-1-5p, to be the dominantly expressed miRNA of the pair in aging. The normal guide strand miR-29b-1-3p is known to act as a pro-osteogenic miRNA. On the other hand, overexpression of the passenger strand miR-29b-1-5p in culture-expanded CD271+ BMSCs significantly down-regulated the expression of stromal cell-derived factor 1 (CXCL12)/ C-X-C chemokine receptor type 4 (SDF-1(CXCL12)/CXCR4) axis and other osteogenic genes including bone morphogenetic protein-2 (BMP-2) and runt-related transcription factor 2 (RUNX2). In contrast, blocking of miR-29b-1-5p function using an antagomir inhibitor up-regulated expression of BMP-2 and RUNX2 genes. Functional assays confirmed that miR-29b-1-5p negatively regulates BMSC osteogenesis in vitro. These novel findings provide evidence of a pathogenic anti-osteogenic role for miR-29b-1-5p and other miRNAs in age-related defects in osteogenesis and bone regeneration.
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Affiliation(s)
- Nada H Eisa
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29403, United States of America; Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC 29403, United States of America; Department of Biochemistry, Faculty of Pharmacy, Mansoura University, Mansoura 35516, Egypt
| | - Periyasamy T Sudharsan
- Georgia Cancer Center, Augusta University, Augusta, GA 30912, United States of America; Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America
| | - Sergio Mas Herrero
- Universitat de Barcelona, Unitat Farmacologia, Dpt. Fonaments Clínics, 08036 Barcelona, Spain
| | - Samuel A Herberg
- Departments of Ophthalmology and Visual Sciences, and Cell and Developmental Biology, SUNY Upstate Medical University, Syracuse, NY 13210, United States of America
| | - Brian F Volkman
- Biochemistry Department, Medical College of Wisconsin, Milwaukee, WI 53226, United States of America
| | - Alexandra Aguilar-Pérez
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Department of Anatomy and Cell Biology, Indiana University School of Medicine in Indianapolis, IN, United States of America; Department of Cellular and Molecular Biology, School of Medicine, Universidad Central del Caribe, Bayamon 00956, Puerto Rico
| | - Dmitry Kondrikov
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29403, United States of America; Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC 29403, United States of America
| | - Ahmed M Elmansi
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29403, United States of America; Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC 29403, United States of America
| | - Charles Reitman
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, SC 29403, United States of America
| | - Xingming Shi
- Department of Orthopaedics and Physical Medicine, Medical University of South Carolina, Charleston, SC 29403, United States of America; Department of Orthopaedic Surgery, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Center for Healthy Aging, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America
| | - Sadanand Fulzele
- Department of Orthopaedic Surgery, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Center for Healthy Aging, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America
| | - Meghan E McGee-Lawrence
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Department of Orthopaedic Surgery, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Center for Healthy Aging, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America
| | - Carlos M Isales
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Department of Orthopaedic Surgery, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Department of Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, USA; Division of Endocrinology, Diabetes and Metabolism, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America
| | - Mark W Hamrick
- Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Department of Orthopaedic Surgery, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Center for Healthy Aging, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America
| | - Maribeth H Johnson
- Department of Population Health Sciences, Division of Biostatistics and Data Science Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America
| | - Jie Chen
- Department of Population Health Sciences, Division of Biostatistics and Data Science Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America
| | - William D Hill
- Department of Pathology and Laboratory Medicine, Medical University of South Carolina, Charleston, SC 29403, United States of America; Ralph H. Johnson Veterans Affairs Medical Center, Charleston, SC 29403, United States of America; Department of Cellular Biology and Anatomy, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America; Center for Healthy Aging, Medical College of Georgia, Augusta University, Augusta, GA 30912, United States of America.
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Torres ML, Wanionok NE, McCarthy AD, Morel GR, Fernández JM. Systemic oxidative stress in old rats is associated with both osteoporosis and cognitive impairment. Exp Gerontol 2021; 156:111596. [PMID: 34678425 DOI: 10.1016/j.exger.2021.111596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2021] [Revised: 09/25/2021] [Accepted: 10/14/2021] [Indexed: 10/20/2022]
Abstract
Aging is associated both with an increase in memory loss and with comorbidities such as Osteoporosis, which could be causatively linked. In the present study, a deleterious effect on bone is demonstrated for the first time in a model of aged rats with impaired memory. We show that bone marrow progenitor cells obtained from rats with memory deficit have a decrease in their osteogenic capacity, and an increase both in their osteoclastogenic profile and adipogenic capacity, when compared to aged rats with preserved memory. Rats with impaired (versus preserved) memory also show alterations in long-bone micro-architecture (decreased trabecular bone and osteocyte density, increased TRAP-positive osteoclasts), lower bone quality (decreased trabecular bone mineral content and density) and an increase in bone marrow adiposity. Interestingly, the development of bone alterations and memory deficit in old rats is associated with significantly higher levels of serum oxidative stress (versus unaffected aged rats). In conclusion, we have found for the first time in an aged rat model, a relationship between alterations in bone quality and memory impairment, with increased systemic oxidative stress as a possible unifying mechanism.
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Affiliation(s)
- María Luz Torres
- LIOMM (Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CIC, Calle 47 y 115, 1900 La Plata, Argentina
| | - Nahuel Ezequiel Wanionok
- LIOMM (Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CIC, Calle 47 y 115, 1900 La Plata, Argentina
| | - Antonio Desmond McCarthy
- LIOMM (Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CIC, Calle 47 y 115, 1900 La Plata, Argentina
| | - Gustavo Ramón Morel
- Biochemistry Research Institute of La Plata "Professor Doctor Rodolfo R. Brenner" (INIBIOLP), Argentina
| | - Juan Manuel Fernández
- LIOMM (Laboratorio de Investigaciones en Osteopatías y Metabolismo Mineral), Departamento de Ciencias Biológicas, Facultad de Ciencias Exactas, Universidad Nacional de La Plata-CIC, Calle 47 y 115, 1900 La Plata, Argentina.
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21
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Reed CJ, Hutinet G, de Crécy-Lagard V. Comparative Genomic Analysis of the DUF34 Protein Family Suggests Role as a Metal Ion Chaperone or Insertase. Biomolecules 2021; 11:1282. [PMID: 34572495 PMCID: PMC8469502 DOI: 10.3390/biom11091282] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Revised: 08/20/2021] [Accepted: 08/24/2021] [Indexed: 12/12/2022] Open
Abstract
Members of the DUF34 (domain of unknown function 34) family, also known as the NIF3 protein superfamily, are ubiquitous across superkingdoms. Proteins of this family have been widely annotated as "GTP cyclohydrolase I type 2" through electronic propagation based on one study. Here, the annotation status of this protein family was examined through a comprehensive literature review and integrative bioinformatic analyses that revealed varied pleiotropic associations and phenotypes. This analysis combined with functional complementation studies strongly challenges the current annotation and suggests that DUF34 family members may serve as metal ion insertases, chaperones, or metallocofactor maturases. This general molecular function could explain how DUF34 subgroups participate in highly diversified pathways such as cell differentiation, metal ion homeostasis, pathogen virulence, redox, and universal stress responses.
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Affiliation(s)
- Colbie J. Reed
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611, USA; (C.J.R.); (G.H.)
| | - Geoffrey Hutinet
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611, USA; (C.J.R.); (G.H.)
| | - Valérie de Crécy-Lagard
- Department of Microbiology and Cell Science, University of Florida, Gainesville, FL 32611, USA; (C.J.R.); (G.H.)
- Genetics Institute, University of Florida, Gainesville, FL 32611, USA
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22
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The Aqueous Extract of Eucommia Leaves Promotes Proliferation, Differentiation, and Mineralization of Osteoblast-Like MC3T3-E1 Cells. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE 2021; 2021:3641317. [PMID: 34249129 PMCID: PMC8238580 DOI: 10.1155/2021/3641317] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 06/07/2021] [Accepted: 06/14/2021] [Indexed: 01/01/2023]
Abstract
Eucommia leaves are dry leaves of Eucommia ulmoides which have long been considered as a functional health food for the treatment of hypertension, hypercholesterolemia, fatty liver, and osteoporosis. With the recent development of Chinese medicine, Eucommia leaves are widely used for tonifying the kidneys and strengthening bone. However, the specific molecular mechanism of Eucommia leaves for strengthening bone remains largely unknown. Osteoblasts are the main functional cells of bone formation; thus, it is essential to study the effect of Eucommia leaves on osteoblasts to better understand their mechanism of action. In the present study, we prepared an aqueous extract of Eucommia leaves (ELAE) and determined its content by high-performance liquid chromatography (HPLC). The effects of ELAE on MC3T3-E1 cells were investigated by CCK-8 assay, alkaline phosphatase (ALP), and Alizarin red S staining assays, combined with RNA sequencing (RNA-seq) and qRT-PCR validation. We demonstrated that ELAE had a significant promoting effect on the proliferation of MC3T3-E1 cells and significantly enhanced extracellular matrix synthesis and mineralization, which were achieved by regulating various functional genes and related signaling pathways. ELAE significantly increased the expression level of genes promoting cell proliferation, such as Rpl10a, Adnp, Pex1, Inpp4a, Frat2, and Pcdhga1, and reduced the expression level of genes inhibiting cell proliferation, such as Npm1, Eif3e, Cbx3, Psmc6, Fgf7, Fxr1, Ddx3x, Mbnl1, and Cdc27. In addition, ELAE increased the expression level of gene markers in osteoblasts, such as Col5a2, Ubap2l, Dkk3, Foxm1, Col16a1, Col12a1, Usp7, Col4a6, Runx2, Sox4, and Bmp4. Taken together, our results suggest that ELAE could promote osteoblast proliferation, differentiation, and mineralization and prevent osteoblast apoptosis. These findings not only increase our understanding of ELAE on the regulation of bone development but also provide a possible strategy to further study the prevention and treatment of osteogenic related diseases by ELAE.
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Nolasco S, Bellido J, Serna M, Carmona B, Soares H, Zabala JC. Colchicine Blocks Tubulin Heterodimer Recycling by Tubulin Cofactors TBCA, TBCB, and TBCE. Front Cell Dev Biol 2021; 9:656273. [PMID: 33968934 PMCID: PMC8100514 DOI: 10.3389/fcell.2021.656273] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 03/29/2021] [Indexed: 11/17/2022] Open
Abstract
Colchicine has been used to treat gout and, more recently, to effectively prevent autoinflammatory diseases and both primary and recurrent episodes of pericarditis. The anti-inflammatory action of colchicine seems to result from irreversible inhibition of tubulin polymerization and microtubule (MT) assembly by binding to the tubulin heterodimer, avoiding the signal transduction required to the activation of the entire NLRP3 inflammasome. Emerging results show that the MT network is a potential regulator of cardiac mechanics. Here, we investigated how colchicine impacts in tubulin folding cofactors TBCA, TBCB, and TBCE activities. We show that TBCA is abundant in mouse heart insoluble protein extracts. Also, a decrease of the TBCA/β-tubulin complex followed by an increase of free TBCA is observed in human cells treated with colchicine. The presence of free TBCA is not observed in cells treated with other anti-mitotic agents such as nocodazole or cold shock, neither after translation inhibition by cycloheximide. In vitro assays show that colchicine inhibits tubulin heterodimer dissociation by TBCE/TBCB, probably by interfering with interactions of TBCE with tubulin dimers, leading to free TBCA. Manipulation of TBCA levels, either by RNAi or overexpression results in decreased levels of tubulin heterodimers. Together, these data strongly suggest that TBCA is mainly receiving β-tubulin from the dissociation of pre-existing heterodimers instead of newly synthesized tubulins. The TBCE/TBCB+TBCA system is crucial for controlling the critical concentration of free tubulin heterodimers and MT dynamics in the cells by recycling the tubulin heterodimers. It is conceivable that colchicine affects tubulin heterodimer recycling through the TBCE/TBCB+TBCA system producing the known benefits in the treatment of pericardium inflammation.
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Affiliation(s)
- Sofia Nolasco
- Faculdade de Medicina Veterinária, CIISA - Centro de Investigação Interdisciplinar em Sanidade Animal, Universidade de Lisboa, Lisbon, Portugal.,Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisbon, Portugal
| | - Javier Bellido
- Departamento de Biología Molecular, Facultad de Medicina, Universidad de Cantabria, Santander, Spain
| | - Marina Serna
- Spanish National Cancer Research Center, CNIO, Madrid, Spain
| | - Bruno Carmona
- Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisbon, Portugal.,Centro de Química Estrutural - Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Helena Soares
- Escola Superior de Tecnologia da Saúde de Lisboa, Instituto Politécnico de Lisboa, Lisbon, Portugal.,Centro de Química Estrutural - Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal
| | - Juan Carlos Zabala
- Departamento de Biología Molecular, Facultad de Medicina, Universidad de Cantabria, Santander, Spain
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Polo Like Kinase 4 (PLK4) impairs human bone marrow mesenchymal stem cell (BMSC) viability and osteogenic differentiation. Biochem Biophys Res Commun 2021; 549:221-228. [PMID: 33706192 DOI: 10.1016/j.bbrc.2021.02.031] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Accepted: 02/07/2021] [Indexed: 12/12/2022]
Abstract
Human bone marrow mesenchymal stem cell (hBMSC) viability and osteogenic differentiation play a critical role in bone disorders such as osteoporosis. In the present study, we identified the aberrant PLK4 upregulation in osteoporosis and downregulation in BMSCs during osteogenic differentiation. In isolated hBMSCs, PLK4 overexpression significantly inhibited, whereas PLK4 knockdown promoted cell viability and hBMSC osteogenic differentiation. For molecular mechanism, PLK4 overexpression decreased, whereas PLK4 knockdown increased WNT1 and β-catenin protein levels and the phosphorylation of Smad1/5/8. The Wnt/β-catenin signaling antagonist Dickkopf 1 (DKK1) or the BMP-Smads antagonist LDN193189 dramatically suppressed hBMSC osteoblast differentiation, and partially attenuated the promotive effects of PLK4 knockdown on hBMSC osteogenic differentiation. Altogether, PLK4 overexpression impairs hBMSC viability and osteogenic differentiation potential, possibly through the Wnt/β-catenin signaling and BMP/Smads signaling.
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25
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Zhang X, Chen K, Chen X, Kourkoumelis N, Li G, Wang B, Zhu C. Integrative Analysis of Genomics and Transcriptome Data to Identify Regulation Networks in Female Osteoporosis. Front Genet 2020; 11:600097. [PMID: 33329745 PMCID: PMC7734180 DOI: 10.3389/fgene.2020.600097] [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: 08/28/2020] [Accepted: 10/28/2020] [Indexed: 12/21/2022] Open
Abstract
Background: Osteoporosis is a highly heritable skeletal muscle disease. However, the genetic mechanisms mediating the pathogenesis of osteoporosis remain unclear. Accordingly, in this study, we aimed to clarify the transcriptional regulation and heritability underlying the onset of osteoporosis. Methods: Transcriptome gene expression data were obtained from the Gene Expression Omnibus database. Microarray data from peripheral blood monocytes of 73 Caucasian women with high and low bone mineral density (BMD) were analyzed. Differentially expressed messenger RNAs (mRNAs) and long non-coding RNAs (lncRNAs) were identified. Differences in BMD were then attributed to several gene modules using weighted gene co-expression network analysis (WGCNA). LncRNA/mRNA regulatory networks were constructed based on the WGCNA and subjected to functional enrichment analysis. Results: In total, 3,355 mRNAs and 999 lncRNAs were identified as differentially expressed genes between patients with high and low BMD. The WGCNA yielded three gene modules, including 26 lncRNAs and 55 mRNAs as hub genes in the blue module, 36 lncRNAs and 31 mRNAs as hub genes in the turquoise module, and 56 mRNAs and 30 lncRNAs as hub genes in the brown module. JUN and ACSL5 were subsequently identified in the modular gene network. After functional pathway enrichment, 40 lncRNAs and 16 mRNAs were found to be related to differences in BMD. All three modules were enriched in metabolic pathways. Finally, mRNA/lncRNA/pathway networks were constructed using the identified regulatory networks of lncRNAs/mRNAs and pathway enrichment relationships. Conclusion: The mRNAs and lncRNAs identified in this WGCNA could be novel clinical targets in the diagnosis and management of osteoporosis. Our findings may help elucidate the complex interactions between transcripts and non-coding RNAs and provide novel perspectives on the regulatory mechanisms of osteoporosis.
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Affiliation(s)
- Xianzuo Zhang
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Kun Chen
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Xiaoxuan Chen
- College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, China
| | - Nikolaos Kourkoumelis
- Department of Medical Physics, School of Health Sciences, University of Ioannina, Ioannina, Greece
| | - Guoyuan Li
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
| | - Bing Wang
- School of Electrical and Information Engineering, Anhui University of Technology, Ma'anshan, China
| | - Chen Zhu
- Department of Orthopedics, The First Affiliated Hospital of USTC, Division of Life Sciences and Medicine, University of Science and Technology of China, Hefei, China
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26
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Zhang L, Peng TL, Wang L, Meng XH, Zhu W, Zeng Y, Zhu JQ, Zhou Y, Xiao HM, Deng HW. Network-based Transcriptome-wide Expression Study for Postmenopausal Osteoporosis. J Clin Endocrinol Metab 2020; 105:5850085. [PMID: 32483604 PMCID: PMC7320836 DOI: 10.1210/clinem/dgaa319] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Accepted: 05/27/2020] [Indexed: 01/08/2023]
Abstract
PURPOSE Menopause is a crucial physiological transition during a woman's life, and it occurs with growing risks of health issues like osteoporosis. To identify postmenopausal osteoporosis-related genes, we performed transcriptome-wide expression analyses for human peripheral blood monocytes (PBMs) using Affymetrix 1.0 ST arrays in 40 Caucasian postmenopausal women with discordant bone mineral density (BMD) levels. METHODS We performed multiscale embedded gene coexpression network analysis (MEGENA) to study functionally orchestrating clusters of differentially expressed genes in the form of functional networks. Gene sets net correlations analysis (GSNCA) was applied to assess how the coexpression structure of a predefined gene set differs in high and low BMD groups. Bayesian network (BN) analysis was used to identify important regulation patterns between potential risk genes for osteoporosis. A small interfering ribonucleic acid (siRNA)-based gene silencing in vitro experiment was performed to validate the findings from BN analysis. RESULT MEGENA showed that the "T cell receptor signaling pathway" and the "osteoclast differentiation pathway" were significantly enriched in the identified compact network, which is significantly correlated with BMD variation. GSNCA revealed that the coexpression structure of the "Signaling by TGF-beta receptor complex pathway" is significantly different between the 2 BMD discordant groups; the hub genes in the postmenopausal low and high BMD group are FURIN and SMAD3 respectively. With siRNA in vitro experiments, we confirmed the regulation relationship of TGFBR2-SMAD7 and TGFBR1-SMURF2. MAIN CONCLUSION The present study suggests that biological signals involved in monocyte recruitment, monocyte/macrophage lineage development, osteoclast formation, and osteoclast differentiation might function together in PBMs that contribute to the pathogenesis of postmenopausal osteoporosis.
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Affiliation(s)
- Lan Zhang
- Center for Biomedical informatics and Genomics, Department of Medicine, Tulane University, New Orleans, Louisiana
| | - Tian-Liu Peng
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Le Wang
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Xiang-He Meng
- Laboratory of Molecular and Statistical Genetics, College of Life Sciences, Hunan Normal University, Changsha, Hunan, China
| | - Wei Zhu
- Center for Biomedical informatics and Genomics, Department of Medicine, Tulane University, New Orleans, Louisiana
| | - Yong Zeng
- Center for Biomedical informatics and Genomics, Department of Medicine, Tulane University, New Orleans, Louisiana
| | - Jia-Qiang Zhu
- Department of Biostatistics, University of Michigan, Ann Arbor, Michigan
| | - Yu Zhou
- Center for Biomedical informatics and Genomics, Department of Medicine, Tulane University, New Orleans, Louisiana
| | - Hong-Mei Xiao
- Institute of Reproduction and Stem Cell Engineering, School of Basic Medical Science, Central South University, Changsha, Hunan, China
| | - Hong-Wen Deng
- Center for Biomedical informatics and Genomics, Department of Medicine, Tulane University, New Orleans, Louisiana
- Correspondence and Reprint Requests: Hong-Wen Deng, Center for Biomedical Informatics and Genomics, Department of Medicine, School of Medicine, Tulane University, New Orleans, LA 70112, USA. E-mail:
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27
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Wang R, Lu A, Liu W, Yue J, Sun Q, Chen J, Luan H, Zhai Y, Li B, Jiang Z, Li Y. Searching for valuable differentially expressed miRNAs in postmenopausal osteoporosis by RNA sequencing. J Obstet Gynaecol Res 2020; 46:1183-1192. [PMID: 32429001 DOI: 10.1111/jog.14307] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2019] [Revised: 04/20/2020] [Accepted: 04/30/2020] [Indexed: 12/24/2022]
Abstract
AIM Postmenopausal osteoporosis is a systemic and chronic bone disease in women. In order to understand the pathological mechanism of postmenopausal osteoporosis, we aimed to find the potential differentially expressed miRNAs in the disease. METHODS Firstly, RNA sequencing was used to identify differentially expressed miRNAs, followed by the construction of the miRNA-target mRNA regulatory network. Then, Gene Ontology and the Kyoto Encyclopedia of Genes and Genomes were used to analyze the biological function of target mRNAs. Finally, electronic validation of identified differentially expressed miRNAs and target mRNAs was performed. RESULTS A total of 33 differentially expressed miRNAs (18 upregulated and 15 downregulated miRNAs) and 6820 miRNA-mRNA pairs were identified. Among which, seven miRNAs with high degree including hsa-miR-17-5p, hsa-miR-1-3p, hsa-miR-193b-3p, hsa-miR-125b-5p, hsa-miR-10b-5p, hsa-miR-100-5p and hsa-miR-30a-3p were obtained in the miRNA-mRNA regulatory network. TGF-beta was the most significantly enriched signaling pathway of target mRNAs. The electronic validation result of hsa-miR-1-3p, hsa-miR-193b-3p, hsa-miR-10b-5p, hsa-miR-100-5p, hsa-miR-133b, hsa-miR-708-5p, CRK, RAB5C, CCND1 and PCYOX1 was consisted with the RNA sequencing analysis. CONCLUSION Dysfunctional miRNAs may play significant roles in postmenopausal osteoporosis.
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Affiliation(s)
- Randong Wang
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Aiping Lu
- Department of Anesthesiology, Aviation General Hospital, Beijing, China
| | - Wangyan Liu
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Juan Yue
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Qiang Sun
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Jiao Chen
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Huijie Luan
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Yaling Zhai
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Bing Li
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
| | - Zhongcai Jiang
- Department of Pathology, Aviation General Hospital, Beijing, China
| | - Yingnan Li
- Department of Orthopaedics, Aviation General Hospital, Beijing, China
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28
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Sun H, Wang Q, Yuan G, Quan J, Dong D, Lun Y, Sun B. Hsa_circ_0001649 restrains gastric carcinoma growth and metastasis by downregulation of miR-20a. J Clin Lab Anal 2020; 34:e23235. [PMID: 32212290 PMCID: PMC7307365 DOI: 10.1002/jcla.23235] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2019] [Revised: 01/10/2020] [Accepted: 01/17/2020] [Indexed: 12/17/2022] Open
Abstract
Background Gastric carcinoma (GC) is a familiar carcinoma and serious threat to human health. We investigated the efficacy and mechanism of circular RNA hsa_circ_0001649 on the growth, migration, and invasion of GC cells. Methods microRNA (miR)‐20a and hsa_circ_0001649 expression was investigated by RT‐qPCR and was changed by cell transfection. CCK‐8, flow cytometry, and BrdU assays were, respectively, used to investigate the efficacies of hsa_circ_0001649 and miR‐20a on cell viability, apoptosis, and proliferation. Transwell assay was used to investigate the efficacies of hsa_circ_0001649 and miR‐20a on cell migration and invasion. Moreover, the levels of cyclin D1, Bax, cleaved caspase‐3, and signal pathway‐related proteins were investigated by Western blot. Results Hsa_circ_0001649 was downregulated in GC cells and tissues. Upregulation of hsa_circ_0001649 restrained viability, proliferation, migration, and invasion, while promoted apoptosis. Furthermore, miR‐20a was negatively regulated by hsa_circ_0001649 and miR‐20a overexpression reversed the efficacy of hsa_circ_0001649 upregulation. Finally, upregulation of hsa_circ_0001649 restrained ERK and Wnt/β‐catenin pathways while miR‐20a overexpression reversed these progresses. Conclusion Upregulation of hsa_circ_0001649 restrained GC cell growth and metastasis by downregulating miR‐20a and thereby inactivated ERK and Wnt/β‐catenin pathways.
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Affiliation(s)
- Haiyuan Sun
- Department of Gastroenterology, The Chinese People's Liberation Army Navy 971 Hospital, Qingdao, China
| | - Qunying Wang
- Department of Gastroenterology, The Chinese People's Liberation Army Navy 971 Hospital, Qingdao, China
| | - Gang Yuan
- Department of Gastroenterology, The Chinese People's Liberation Army Navy 971 Hospital, Qingdao, China
| | - Jingzi Quan
- Department of Gastroenterology, The Chinese People's Liberation Army Navy 971 Hospital, Qingdao, China
| | - Dongfang Dong
- Department of Gastroenterology, The Chinese People's Liberation Army Navy 971 Hospital, Qingdao, China
| | - Yue Lun
- Department of Gastroenterology, The Chinese People's Liberation Army Navy 971 Hospital, Qingdao, China
| | - Bo Sun
- Department of Gastroenterology, The Chinese People's Liberation Army Navy 971 Hospital, Qingdao, China
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Xie X, Liu M, Meng Q. Angelica polysaccharide promotes proliferation and osteoblast differentiation of mesenchymal stem cells by regulation of long non-coding RNA H19: An animal study. Bone Joint Res 2019; 8:323-332. [PMID: 31463041 PMCID: PMC6691372 DOI: 10.1302/2046-3758.87.bjr-2018-0223.r2] [Citation(s) in RCA: 39] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/30/2023] Open
Abstract
Objectives Osteoporosis is a systemic bone metabolic disease, which often occurs among the elderly. Angelica polysaccharide (AP) is the main component of angelica sinensis, and is widely used for treating various diseases. However, the effects of AP on osteoporosis have not been investigated. This study aimed to uncover the functions of AP in mesenchymal stem cell (MSC) proliferation and osteoblast differentiation. Methods MSCs were treated with different concentrations of AP, and then cell viability, Cyclin D1 protein level, and the osteogenic markers of runt-related transcription factor 2 (RUNX2), osteocalcin (OCN), alkaline phosphatase (ALP), bone morphogenetic protein 2 (BMP-2) were examined by Cell Counting Kit-8 (CCK-8) and western blot assays, respectively. The effect of AP on the main signalling pathways of phosphatidylinositol 3-kinase (PI3K)/protein kinase B (AKT) and Wnt/β-catenin was determined by western blot. Following this, si-H19#1 and si-H19#2 were transfected into MSCs, and the effects of H19 on cell proliferation and osteoblast differentiation in MSCs were studied. Finally, in vivo experimentation explored bone mineral density, bone mineral content, and the ash weight and dry weight of femoral bone. Results The results revealed that AP significantly promoted cell viability, upregulated cyclin D1 and increased RUNX2, OCN, ALP, and BMP-2 protein levels in MSCs. Moreover, we found that AP notably activated PI3K/AKT and Wnt/β-catenin signalling pathways in MSCs. Additionally, the relative expression level of H19 was upregulated by AP in a dose-dependent manner. The promoting effects of AP on cell proliferation and osteoblast differentiation were reversed by H19 knockdown. Moreover, in vivo experimentation further confirmed the promoting effect of AP on bone formation. Conclusion These data indicate that AP could promote MSC proliferation and osteoblast differentiation by regulating H19. Cite this article: X. Xie, M. Liu, Q. Meng. Angelica polysaccharide promotes proliferation and osteoblast differentiation of mesenchymal stem cells by regulation of long non-coding RNA H19: An animal study. Bone Joint Res 2019;8:323–332. DOI: 10.1302/2046-3758.87.BJR-2018-0223.R2.
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Affiliation(s)
- Xiaoyan Xie
- Department of Endocrinology, Affiliated Hospital of Jining Medical University; Department of Teaching and Research for Internal Medicine, Clinical Medical College, Jining Medical University, Jining, China
| | - Miao Liu
- Department of Internal Medicine, Jining Psychiatric Hospital, Jining, China
| | - Qiang Meng
- Department of Endocrinology, Affiliated Hospital of Jining Medical University, Jining, China
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Sanghani-Kerai A, Osagie-Clouard L, Blunn G, Coathup M. The influence of age and osteoporosis on bone marrow stem cells from rats. Bone Joint Res 2018; 7:289-297. [PMID: 29922447 PMCID: PMC5987697 DOI: 10.1302/2046-3758.74.bjr-2017-0302.r1] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Objectives This study aimed to assess the effect of age and osteoporosis on the proliferative and differentiating capacity of bone-marrow-derived mesenchymal stem cells (MSCs) in female rats. We also discuss the role of these factors on expression and migration of cells along the C-X-C chemokine receptor type 4 (CXCR-4) / stromal derived factor 1 (SDF-1) axis. Methods Mesenchymal stem cells were harvested from the femora of young, adult, and osteopenic Wistar rats. Cluster of differentiation (CD) marker and CXCR-4 expression was measured using flow cytometry. Cellular proliferation was measured using Alamar Blue, osteogenic differentiation was measured using alkaline phosphatase expression and alizarin red production, and adipogenic differentiation was measured using Oil red O. Cells were incubated in Boyden chambers to quantify their migration towards SDF-1. Data was analyzed using a Student’s t-test, where p-values < 0.05 were considered significant. Results CD marker expression and proliferation of the MSCs from the three groups was not significantly different. The young MSCs demonstrated significantly increased differentiation into bone and fat and superior migration towards SDF-1. The migration of SDF-1 doubled with young rats compared with the adult rats (p = 0.023) and it was four times higher when compared with cells isolated from ovariectomized (OVX) osteopenic rats (p = 0.013). Conclusion Young rat MSCs are significantly more responsive to osteogenic differentiation, and, contrary to other studies, also demonstrated increased adipogenic differentiation compared with cells from adult and ostopenic rats. Young-rat-derived cells also showed superior migration towards SDF-1 compared with MSCs from OVX and adult control rats. Cite this article: A. Sanghani-Kerai, L. Osagie-Clouard, G. Blunn, M. Coathup. The influence of age and osteoporosis on bone marrow stem cells from rats. Bone Joint Res 2018;7:289–297. DOI: 10.1302/2046-3758.74.BJR-2017-0302.R1.
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Affiliation(s)
- A Sanghani-Kerai
- Division of Surgery and Interventional Sciences, Institute of Orthopaedics and Musculoskeletal Science, University College London, Royal National Orthopaedic Hospital, Stanmore, Middlesex, UK
| | - L Osagie-Clouard
- Division of Surgery and Interventional Sciences, Institute of Orthopaedics and Musculoskeletal Science, University College London, Royal National Orthopaedic Hospital, Stanmore, Middlesex, UK
| | - G Blunn
- Division of Surgery and Interventional Sciences, Institute of Orthopaedics and Musculoskeletal Science, University College London, Royal National Orthopaedic Hospital, Stanmore, Middlesex, UK
| | - M Coathup
- Division of Surgery and Interventional Sciences, Institute of Orthopaedics and Musculoskeletal Science, University College London, Royal National Orthopaedic Hospital, Stanmore, Middlesex, UK
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