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Li Z, Meng K, Lan S, Ren Z, Lai Z, Ao X, Liu Z, Xu J, Mo X, Zhang Z. The Role of mRNA Modifications in Bone Diseases. Int J Biol Sci 2025; 21:1065-1080. [PMID: 39897026 PMCID: PMC11781163 DOI: 10.7150/ijbs.104460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2024] [Accepted: 12/24/2024] [Indexed: 02/04/2025] Open
Abstract
As a type of epigenetic modifications, mRNA modifications regulate the metabolism of mRNAs, thereby influencing gene expression. Previous studies have indicated that dysregulation of mRNA modifications is closely associated with the occurrence and progression of bone diseases (BDs). In this study, we first introduced the dynamic regulatory processes of five major mRNA modifications and their effects on the nucleus export, stability, and translation of mRNAs. We then summarized the mechanisms of mRNA modifications involved in the development of osteoporosis, osteoarthritis, rheumatoid arthritis, ankylosing spondylitis, fractures, osteomyelitis, and osteosarcoma. Finally, we reviewed therapeutic strategies for BDs based on the above mechanisms, focusing on regulating osteoblast and osteoclast differentiation, inhibiting cellular senescence and injury, and alleviating inflammation. This review identified mRNA modifications as potential targets for treating BDs and proposes perspectives on the diversity, targetability, and safety of mRNA-modifying therapies.
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Affiliation(s)
| | | | | | | | | | | | | | - Jiajia Xu
- Division of Spine Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China; The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Xiaoyi Mo
- Division of Spine Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China; The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
| | - Zhongmin Zhang
- Division of Spine Surgery, Department of Orthopaedics, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong 510515, China; The First School of Clinical Medicine, Southern Medical University, Guangzhou, Guangdong 510515, China
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Gao D, Shi J, Lu S, Li J, Lv K, Xu Y, Song M. METTL3 accelerates staphylococcal protein A (SpA)-induced osteomyelitis progression by regulating m6A methylation-modified miR-320a. J Orthop Surg Res 2024; 19:729. [PMID: 39506767 PMCID: PMC11542406 DOI: 10.1186/s13018-024-05164-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2024] [Accepted: 10/08/2024] [Indexed: 11/08/2024] Open
Abstract
Osteomyelitis (OM) is an inflammatory disease of bone infection and destruction characterized by dysregulation of bone homeostasis. Staphylococcus aureus (SA) has been reported to be the most common pathogen causing infectious OM. Recent studies have demonstrated that N6-methyladenosine (m6A) regulators are associated with the development of OM. However, the molecular mechanism of m6A modifications in OM remains unclear. Here, we investigated the function of methyltransferase-like 3 (METTL3)-mediated m6A modification in OM development. In this study, human bone mesenchymal stem cells (hBMSCs) were treated with staphylococcal protein A (SpA), a vital virulence factor of SA, to construct cell models of OM. Firstly, we found that METTL3 was upregulated in OM patients and SpA-induced hBMSCs, and SpA treatment suppressed osteogenic differentiation and induced oxidative stress and inflammatory injury in hBMSCs. Functional experiments showed that METTL3 knockdown alleviated the inhibition of osteogenic differentiation and the promotion of oxidative stress and inflammation in SpA-treated hBMSCs. Furthermore, METTL3-mediated m6A modification upregulated miR-320a expression by promoting pri-miR-320a maturation, and the mitigating effects of METTL3 knockdown on SpA-mediated osteogenic differentiation, oxidative stress and inflammatory responses can be reversed by miR-320 mimic. In addition, we demonstrated that phosphatidylinositol-4, 5-bisphosphate 3-kinase catalytic subunit alpha (PIK3CA) was a downstream target of miR-320a, upregulation of PIK3CA alleviated miR-320a-induced inhibition of osteogenic differentiation, and upregulation of oxidative stress and inflammatory responses during SpA infection. Finally, we found that silencing METTL3 alleviated OM development by regulating the miR-320a/PIK3CA axis. Taken together, our data demonstrated that the METTL3/m6A/miR-320a/PIK3CA axis regulated SpA-mediated osteogenic differentiation, oxidative stress, and inflammatory responses in OM, which may provide a new therapeutic strategy for OM patients.
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Affiliation(s)
- Ding Gao
- Department of Orthopedic Trauma Surgery, Meizhou People's Hospital, Meizhou, 514031, China
| | - Jian Shi
- Department of Orthopedics, 920th Hospital of the Joint Logistics Force of the People's Liberation Army, No. 212, Daguan Road, Xishan District, Kunming, 650032, China
| | - Siyu Lu
- Department of Orthopedics, 920th Hospital of the Joint Logistics Force of the People's Liberation Army, No. 212, Daguan Road, Xishan District, Kunming, 650032, China
| | - Junyi Li
- Department of Orthopedics, 920th Hospital of the Joint Logistics Force of the People's Liberation Army, No. 212, Daguan Road, Xishan District, Kunming, 650032, China
- Graduate School of Kunming Medical University, No. 1168, Chunrong West Road, Yuhua Street, Chenggong District, Kunming, 650500, China
| | - Kehan Lv
- Department of Orthopedics, 920th Hospital of the Joint Logistics Force of the People's Liberation Army, No. 212, Daguan Road, Xishan District, Kunming, 650032, China
- Graduate School of Kunming Medical University, No. 1168, Chunrong West Road, Yuhua Street, Chenggong District, Kunming, 650500, China
| | - Yongqing Xu
- Department of Orthopedics, 920th Hospital of the Joint Logistics Force of the People's Liberation Army, No. 212, Daguan Road, Xishan District, Kunming, 650032, China.
| | - Muguo Song
- Department of Orthopedics, 920th Hospital of the Joint Logistics Force of the People's Liberation Army, No. 212, Daguan Road, Xishan District, Kunming, 650032, China.
- Graduate School of Kunming Medical University, No. 1168, Chunrong West Road, Yuhua Street, Chenggong District, Kunming, 650500, China.
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Fang S, Ni H, Zhang Q, Dai J, He S, Min J, Zhang W, Li H. Integrated single-cell and bulk RNA sequencing analysis reveal immune-related biomarkers in postmenopausal osteoporosis. Heliyon 2024; 10:e38022. [PMID: 39328516 PMCID: PMC11425179 DOI: 10.1016/j.heliyon.2024.e38022] [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: 04/27/2024] [Revised: 09/14/2024] [Accepted: 09/16/2024] [Indexed: 09/28/2024] Open
Abstract
Background Postmenopausal osteoporosis (PMOP) represents as a significant health concern, particularly as the population ages. Currently, there is a paucity of comprehensive descriptions regarding the immunoregulatory mechanisms and early diagnostic biomarkers associated with PMOP. This study aims to examine immune-related differentially expressed genes (IR-DEGs) in the peripheral blood mononuclear cells of PMOP patients to identify immunological patterns and diagnostic biomarkers. Methods The GSE56815 dataset from the Gene Expression Omnibus (GEO) database was used as the training group, while the GSE2208 dataset served as the validation group. Initially, differential expression analysis was conducted after data integration to identify IR-DEGs in the peripheral blood mononuclear cells of PMOP. Subsequently, feature selection of these IR-DEGs was performed using RF, SVM-RFE, and LASSO regression models. Additionally, the expression of IR-DEGs in distinct bone marrow cell subtypes was analyzed using single-cell RNA sequencing (scRNA-seq) datasets, allowing the identification of cellular communication patterns within various cell subgroups. Finally, molecular subtypes and diagnostic models for PMOP were constructed based on these selected IR-DEGs. Furthermore, the expression levels of characteristic IR-DEGs were examined in rat osteoporosis (OP) models. Results Using machine learning, six IR-DEGs (JUN, HMOX1, CYSLTR2, TNFSF8, IL1R2, and SSTR5) were identified. Subsequently, two molecular subtypes of PMOP (subtype 1 and subtype 2) were established, with subtype 1 exhibiting a higher proportion of M1 macrophage infiltration. Analysis of the scRNA-seq dataset revealed 11 distinct cell clusters. It was noted that JUN was significantly overexpressed in M1 macrophages, while HMOX1 showed a marked elevation in endothelial cells and M2 macrophages. Cell communication results suggested that the PMOP microenvironment features increased interactions among M2 macrophages, CD8+ T cells, Tregs, and fibroblasts. The diagnostic model based on these six IR-DEGs demonstrated excellent diagnostic performance (AUC = 0.927). In the OP rat model, the expression of IL1R2 and TNFSF8 were significantly elevated. Conclusion JUN, HMOX1, CYSLTR2, TNFSF8, IL1R2, and SSTR5 may serve as promising molecular targets for diagnosing and subtyping patients with PMOP. These results offer novel perspectives on the early diagnosis of PMOP and the advancement of personalized immune-based therapies.
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Affiliation(s)
- Shenyun Fang
- Department of Orthopedic Surgery, First People's Hospital of Huzhou, The First affiliated Hospital of Huzhou University, Huzhou, 313000, China
- Huzhou Key Laboratory for Early Diagnosis and Treatment of Osteoarthritis, Huzhou, 313000, China
| | - Haonan Ni
- Department of Orthopedic Surgery, First People's Hospital of Huzhou, The First affiliated Hospital of Huzhou University, Huzhou, 313000, China
| | - Qianghua Zhang
- Department of Orthopedic Surgery, First People's Hospital of Huzhou, The First affiliated Hospital of Huzhou University, Huzhou, 313000, China
- Huzhou Key Laboratory for Early Diagnosis and Treatment of Osteoarthritis, Huzhou, 313000, China
| | - Jilin Dai
- Department of Orthopedic Surgery, First People's Hospital of Huzhou, The First affiliated Hospital of Huzhou University, Huzhou, 313000, China
- Huzhou Key Laboratory for Early Diagnosis and Treatment of Osteoarthritis, Huzhou, 313000, China
| | - Shouyu He
- Department of Orthopedic Surgery, First People's Hospital of Huzhou, The First affiliated Hospital of Huzhou University, Huzhou, 313000, China
- Huzhou Key Laboratory for Early Diagnosis and Treatment of Osteoarthritis, Huzhou, 313000, China
| | - Jikang Min
- Department of Orthopedic Surgery, First People's Hospital of Huzhou, The First affiliated Hospital of Huzhou University, Huzhou, 313000, China
- Huzhou Key Laboratory for Early Diagnosis and Treatment of Osteoarthritis, Huzhou, 313000, China
| | - Weili Zhang
- Department of Ophthalmology, First People's Hospital of Huzhou, The First affiliated Hospital of Huzhou University, Huzhou, 313000, China
| | - Haidong Li
- Department of Orthopedic Surgery, First People's Hospital of Huzhou, The First affiliated Hospital of Huzhou University, Huzhou, 313000, China
- Huzhou Key Laboratory for Early Diagnosis and Treatment of Osteoarthritis, Huzhou, 313000, China
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Shi X, Li M, Ni H, Wu Y, Li Y, Chen X, Xu Y. Integrative gene expression analysis and animal model reveal immune- and autophagy-related biomarkers in osteomyelitis. Immun Inflamm Dis 2024; 12:e1339. [PMID: 38990187 PMCID: PMC11238574 DOI: 10.1002/iid3.1339] [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: 01/03/2024] [Revised: 04/26/2024] [Accepted: 06/29/2024] [Indexed: 07/12/2024] Open
Abstract
BACKGROUND Osteomyelitis (OM) is recognized as a significant challenge in orthopedics due to its complex immune and inflammatory responses. The prognosis heavily depends on timely diagnosis, accurate classification, and assessment of severity. Thus, the identification of diagnostic and classification-related genes from an immunological standpoint is crucial for the early detection and tailored treatment of OM. METHODS Transcriptomic data for OM was sourced from the Gene Expression Omnibus (GEO) database, leading to the identification of autophagy- and immune-related differentially expressed genes (AIR-DEGs) through differential expression analysis. Diagnostic and classification models were subsequently developed. The CIBERSORT algorithm was utilized to examine immune cell infiltration in OM, and the relationship between OM clusters and various immune cells was explored. Key AIR-DEGs were further validated through the creation of OM animal models. RESULTS Analysis of the transcriptomic data revealed three AIR-DEGs that played a significant role in immune responses and pathways. Nomogram and receiver operating characteristic curve analyses were performed, demonstrating excellent diagnostic capability for differentiating between OM patients and healthy individuals, with an area under the curve of 0.814. An unsupervised clustering analysis discerned two unique patterns of autophagy- and immune-related genes, as well as gene patterns. Further exploration into immune infiltration exhibited notable variances across different subtypes, especially between OM cluster 1 and gene cluster A, highlighting their potential role in mitigating inflammatory responses by regulating immune activities. Moreover, the mRNA and protein expression levels of three AIR-DEGs in the animal model were aligned with those in the training and validation data sets. CONCLUSIONS From an immunological perspective, a diagnostic model was successfully developed, and two distinct clustering patterns were identified. These contributions offer a significant resource for the early detection and personalized immunotherapy of patients with OM.
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Affiliation(s)
- Xiangwen Shi
- Kunming Medical UniversityKunmingChina
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical CenterYunnan Orthopedics and Sports Rehabilitation Clinical Medical Research CenterKunmingChina
- Department of Orthopedic Surgery920th Hospital of Joint Logistics Support Force of PLAKunmingYunnanChina
| | - Mingjun Li
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical CenterYunnan Orthopedics and Sports Rehabilitation Clinical Medical Research CenterKunmingChina
- Department of Orthopedic Surgery920th Hospital of Joint Logistics Support Force of PLAKunmingYunnanChina
| | - Haonan Ni
- Orthopedic DepartmentFirst People's Hospital of Huzhou, First Affiliated Hospital of Huzhou UniversityHuzhouChina
| | - Yipeng Wu
- Kunming Medical UniversityKunmingChina
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical CenterYunnan Orthopedics and Sports Rehabilitation Clinical Medical Research CenterKunmingChina
- Department of Orthopedic Surgery920th Hospital of Joint Logistics Support Force of PLAKunmingYunnanChina
| | - Yang Li
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical CenterYunnan Orthopedics and Sports Rehabilitation Clinical Medical Research CenterKunmingChina
- Department of Orthopedic Surgery920th Hospital of Joint Logistics Support Force of PLAKunmingYunnanChina
| | - Xianjun Chen
- Department of NeurosurgeryNanping First Hospital Affiliated to Fujian Medical UniversityNanpingFujianChina
| | - Yongqing Xu
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical CenterYunnan Orthopedics and Sports Rehabilitation Clinical Medical Research CenterKunmingChina
- Department of Orthopedic Surgery920th Hospital of Joint Logistics Support Force of PLAKunmingYunnanChina
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Liu H, Zhou Y, Fredimoses M, Niu P, Ge Y, Wu R, Liu T, Li P, Shi Y, Shi Y, Liu K, Dong Z. Targeting leucine-rich PPR motif-containing protein/LRPPRC by 5,7,4'-trimethoxyflavone suppresses esophageal squamous cell carcinoma progression. Int J Biol Macromol 2024; 269:131966. [PMID: 38697422 DOI: 10.1016/j.ijbiomac.2024.131966] [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: 09/21/2023] [Revised: 04/24/2024] [Accepted: 04/27/2024] [Indexed: 05/05/2024]
Abstract
JAK2/STAT3/MYC axis is dysregulated in nearly 70 % of human cancers, but targeting this pathway therapeutically remains a big challenge in cancer therapy. In this study, genes associated with JAK2, STAT3, and MYC were analyzed, and potential target genes were selected. Leucine-rich PPR motif-containing protein (LRPPRC) whose function and regulation are not fully understood, emerged as one of top 3 genes in terms of RNA epigenetic modification. Here, we demonstrate LRPPRC may be an independent prognostic indicator besides JAK2, STAT3, and MYC. Mechanistically, LRPPRC impairs N6-methyladenosine (m6A) modification of JAK2, STAT3, and MYC to facilitate nuclear mRNA export and expression. Meanwhile, excess LRPPRC act as a scaffold protein binding to JAK2 and STAT3 to enhance stability of JAK2-STAT3 complex, thereby facilitating JAK2/STAT3/MYC axis activation to promote esophageal squamous cell carcinoma (ESCC) progression. Furthermore, 5,7,4'-trimethoxyflavone was verified to bind to LRPPRC, STAT3, and CDK1, dissociating LRPPRC-JAK2-STAT3 and JAK2-STAT3-CDK1 interaction, leading to impaired tumorigenesis in 4-Nitroquinoline N-oxide induced ESCC mouse models and suppressed tumor growth in ESCC patient derived xenograft mouse models. In summary, this study suggests regulation of m6A modification by LRPPRC, and identifies a novel triplex target compound, suggesting that targeting LRPPRC-mediated JAK2/STAT3/MYC axis may overcome JAK2/STAT3/MYC dependent tumor therapeutic dilemma.
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Affiliation(s)
- Hui Liu
- Department of Pathophysiology, School of Basic Medicine Sciences, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, China; China-US (Henan) Hormel Cancer Institute, No.127, Dongming Road, Jinshui District, Zhengzhou, Henan 450008, China; Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm, Sweden; Tianjian Laboratory of Advanced Biomedical Sciences, Institute of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou, Henan 450000, China.
| | - Yubing Zhou
- Department of Pathophysiology, School of Basic Medicine Sciences, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Mangaladoss Fredimoses
- China-US (Henan) Hormel Cancer Institute, No.127, Dongming Road, Jinshui District, Zhengzhou, Henan 450008, China
| | - Peijia Niu
- Department of Pathophysiology, School of Basic Medicine Sciences, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Yunxiao Ge
- Department of Pathophysiology, School of Basic Medicine Sciences, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Rui Wu
- Department of Pathophysiology, School of Basic Medicine Sciences, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Tingting Liu
- China-US (Henan) Hormel Cancer Institute, No.127, Dongming Road, Jinshui District, Zhengzhou, Henan 450008, China
| | - Pan Li
- China-US (Henan) Hormel Cancer Institute, No.127, Dongming Road, Jinshui District, Zhengzhou, Henan 450008, China
| | - Yang Shi
- Department of Gastroenterology, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, Henan 450052, China
| | - Yaqian Shi
- Department of Pathophysiology, School of Basic Medicine Sciences, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, China
| | - Kangdong Liu
- Department of Pathophysiology, School of Basic Medicine Sciences, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, China; China-US (Henan) Hormel Cancer Institute, No.127, Dongming Road, Jinshui District, Zhengzhou, Henan 450008, China; Tianjian Laboratory of Advanced Biomedical Sciences, Institute of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou, Henan 450000, China
| | - Zigang Dong
- Department of Pathophysiology, School of Basic Medicine Sciences, College of Medicine, Zhengzhou University, Zhengzhou, Henan 450001, China; China-US (Henan) Hormel Cancer Institute, No.127, Dongming Road, Jinshui District, Zhengzhou, Henan 450008, China; Tianjian Laboratory of Advanced Biomedical Sciences, Institute of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou, Henan 450000, China.
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Zhang Q, Li J, Wang C, Li Z, Luo P, Gao F, Sun W. N6-Methyladenosine in Cell-Fate Determination of BMSCs: From Mechanism to Applications. RESEARCH (WASHINGTON, D.C.) 2024; 7:0340. [PMID: 38665846 PMCID: PMC11045264 DOI: 10.34133/research.0340] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Accepted: 02/21/2024] [Indexed: 04/28/2024]
Abstract
The methylation of adenosine base at the nitrogen-6 position is referred to as "N6-methyladenosine (m6A)" and is one of the most prevalent epigenetic modifications in eukaryotic mRNA and noncoding RNA (ncRNA). Various m6A complex components known as "writers," "erasers," and "readers" are involved in the function of m6A. Numerous studies have demonstrated that m6A plays a crucial role in facilitating communication between different cell types, hence influencing the progression of diverse physiological and pathological phenomena. In recent years, a multitude of functions and molecular pathways linked to m6A have been identified in the osteogenic, adipogenic, and chondrogenic differentiation of bone mesenchymal stem cells (BMSCs). Nevertheless, a comprehensive summary of these findings has yet to be provided. In this review, we primarily examined the m6A alteration of transcripts associated with transcription factors (TFs), as well as other crucial genes and pathways that are involved in the differentiation of BMSCs. Meanwhile, the mutual interactive network between m6A modification, miRNAs, and lncRNAs was intensively elucidated. In the last section, given the beneficial effect of m6A modification in osteogenesis and chondrogenesis of BMSCs, we expounded upon the potential utility of m6A-related therapeutic interventions in the identification and management of human musculoskeletal disorders manifesting bone and cartilage destruction, such as osteoporosis, osteomyelitis, osteoarthritis, and bone defect.
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Affiliation(s)
- Qingyu Zhang
- Department of Orthopedics,
Shandong Provincial Hospital affiliated to Shandong First Medical University, Jinan 250021, China
| | - Junyou Li
- School of Mechanical Engineering,
Sungkyunkwan University, Suwon 16419, South Korea
| | - Cheng Wang
- Department of Orthopaedic Surgery,
Peking UniversityThird Hospital, Peking University, Beijing 100191, China
| | - Zhizhuo Li
- State Key Laboratory of Pharmaceutical Biotechnology, Division of Sports Medicine and Adult Reconstructive Surgery, Department of Orthopedic Surgery, Nanjing Drum Tower Hospital,
the Affiliated Hospital of Nanjing University Medical School, Nanjing 210008, China
| | - Pan Luo
- Department of Joint Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an 710054, China
| | - Fuqiang Gao
- Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
| | - Wei Sun
- Department of Orthopedics, China-Japan Friendship Hospital, Beijing 100029, China
- Department of Orthopaedic Surgery of the Perelman School of Medicine,
University of Pennsylvania, Philadelphia, PA 19104, USA
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Shi X, Ni H, Tang L, Li M, Wu Y, Xu Y. Identification of molecular subgroups in osteomyelitis induced by staphylococcus aureus infection through gene expression profiles. BMC Med Genomics 2023; 16:149. [PMID: 37370094 DOI: 10.1186/s12920-023-01568-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2023] [Accepted: 06/04/2023] [Indexed: 06/29/2023] Open
Abstract
BACKGROUND Staphylococcus aureus (S. aureus) infection-induced osteomyelitis (OM) is an inflammatory bone disease accompanied by persistent bone destruction, and the treatment is challenging because of its tendency to recur. Present study was aimed to explore the molecular subgroups of S. aureus infection-induced OM and to deepen the mechanistic understanding for molecularly targeted treatment of OM. METHODS Integration of 164 OM samples and 60 healthy samples from three datasets of the Gene Expression Omnibus (GEO) database. OM patients were classified into different molecular subgroups based on unsupervised algorithms and correlations of clinical characteristics between subgroups were analyzed. Next, The CIBERSORT algorithm was used to evaluate the proportion of immune cell infiltration in different OM subgroups. Weighted gene co-expression analysis (WGCNA) was used to identify different gene modules and explore the relationship with clinical characteristics, and further annotated OM subgroups and gene modules by the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis. RESULTS Two subgroups with excellent consistency were identified in this study, subgroup and hospital length of stay were independent predictors of OM. Compared with subgroup I, OM patients in subgroup II had longer hospital length of stay and more severe disease. Meanwhile, the infiltration proportions of monocytes and macrophages M0 were higher in patients of OM subgroup II. Finally, combined with the characteristics of the KEGG enrichment modules, the expression of osteoclast differentiation-related genes such as CTSK was upregulated in OM subgroup II, which may be closely associated with more severe OM patients. CONCLUSION The current study showed that OM subgroup II had longer hospital length of stay and more severe disease, the osteoclast differentiation pathway and the main target CTSK contribute to our deeper understanding for the molecular mechanisms associated with S. aureus infection-induced OM, and the construction of molecular subgroups suggested the necessity for different subgroups of patients to receive individualized treatment.
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Affiliation(s)
- Xiangwen Shi
- Kunming Medical University, Kunming, China, 650500
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, Yunnan, P.R. China, 650100
| | - Haonan Ni
- Kunming Medical University, Kunming, China, 650500
| | - Linmeng Tang
- Bone and Joint Imaging Center, Department of Medical imaging, The First Affiliated Hospital of Hebei North University, Zhangjiakou, China, 075000
| | - Mingjun Li
- Kunming Medical University, Kunming, China, 650500
| | - Yipeng Wu
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, Yunnan, P.R. China, 650100.
| | - Yongqing Xu
- Laboratory of Yunnan Traumatology and Orthopedics Clinical Medical Center, Yunnan Orthopedics and Sports Rehabilitation Clinical Medical Research Center, Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force of PLA, Kunming, Yunnan, P.R. China, 650100.
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