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Hao X, Wu X. SP1‑mediated ADAMTS5 transcription promotes IL‑1β‑induced chondrocyte injury via Wnt/β‑catenin pathway in osteoarthritis. Mol Med Rep 2024; 30:149. [PMID: 38940327 PMCID: PMC11228694 DOI: 10.3892/mmr.2024.13273] [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: 09/22/2023] [Accepted: 05/03/2024] [Indexed: 06/29/2024] Open
Abstract
Osteoarthritis (OA) is a chronic disease that involves chondrocyte injury. ADAMTS5 has been confirmed to mediate chondrocyte injury and thus regulate OA progression, but its underlying molecular mechanisms remain unclear. In the present study, interleukin‑1β (IL‑1β)‑induced chondrocytes were used to mimic OA in vitro. Cell proliferation and apoptosis were assessed by MTT assay, EdU assay and flow cytometry, and protein levels of ADAMTS5, specificity protein 1 (SP1), matrix‑related markers and Wnt/β‑catenin pathway‑related markers were examined using western blotting. In addition, ELISA was performed to measure the concentrations of inflammation factors, and oxidative stress was evaluated by detecting SOD activity and MDA levels. The mRNA expression levels of ADAMTS5 and SP1 were determined by reverse transcription‑quantitative PCR, and the interaction between SP1 and ADAMTS5 was analyzed using a dual‑luciferase reporter assay and chromatin immunoprecipitation assay. IL‑1β suppressed proliferation, but promoted apoptosis, extracellular matrix degradation, inflammation and oxidative stress in chondrocytes. ADAMTS5 was upregulated in IL‑1β‑induced chondrocytes, and its knockdown alleviated IL‑1β‑induced chondrocyte injury. SP1 could bind to the ADAMTS5 promoter region to promote its transcription, and SP1 knockdown relieved IL‑1β‑induced chondrocyte injury by reducing ADAMTS5 expression. The SP1/ADAMTS5 axis activated the Wnt/β‑catenin pathway, and the Wnt/β‑catenin pathway agonist, SKL2001, reversed the protective effect of ADAMTS5 knockdown on chondrocyte injury induced by IL‑1β. To the best of our knowledge, the present study was the first to reveal the interaction between SP1 and ADAMTS5 in OA progression and indicated that the SP1/ADAMTS5 axis mediates OA progression by regulating the Wnt/β‑catenin pathway.
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Affiliation(s)
- Xiaoting Hao
- Department of Teaching Administration, Xiangyang No. 1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei 441000, P.R. China
- Graduate School and Open Learning College, Cavite State University, Indang, Cavite 4122 Philippines
| | - Xiaxia Wu
- Department of Radiology, Xiangyang No. 1 People's Hospital, Hubei University of Medicine, Xiangyang, Hubei 441000, P.R. China
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Qian W, Mei K, Zhu L, Chu Y, Lv J, Yun C. Circ_0044235 regulates the development of osteoarthritis by the modulation of miR-375/PIK3R3 axis. J Orthop Surg Res 2024; 19:241. [PMID: 38622668 PMCID: PMC11017539 DOI: 10.1186/s13018-024-04694-z] [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: 01/03/2024] [Accepted: 03/22/2024] [Indexed: 04/17/2024] Open
Abstract
BACKGROUND Circular RNAs (circRNAs) play an important role in osteoarthritis (OA). However, the role of circRNA in OA is still unclear. Here, we explored the role and mechanism of circ_0044235 in OA. METHODS CHON-001 cells were treated with IL-1β to establish OA model in vitro. The levels of circ_0044235, miR-375 and phosphoinositide 3-kinase (PI3K) regulatory subunit 3 (PIK3R3) were detected by quantitative real-time PCR. Cell count kit-8 assay and flow cytometry assay were used to detect cell viability and apoptosis. The concentrations of inflammation factors were determined by enzyme-linked immunosorbent assay. Western blot was used to detect protein levels. The interaction between miR-375 and circ_0044235 or PIK3R3 was analyzed by dual-luciferase reporter assay and RNA immunoprecipitation assay. RESULTS Circ_0044235 was significantly decreased in OA cartilage tissue and IL-1β-treated CHON-001 cells. Overexpression of circ_0044235 promoted IL-1β-stimulated CHON-001 cell viability and inhibited apoptosis, inflammation, and extracellular matrix (ECM) degradation. In mechanism analysis, circ_0044235 could act as a sponge for miR-375 and positively regulate PIK3R3 expression. In addition, miR-375 ameliorated the effect of circ_0044235 overexpression on IL-1β-mediated CHON-001 cells injury. In addition, miR-375 inhibition mitigated IL-1β-induced CHON-001 cell injury, while PIK3R3 silencing restored the effect. CONCLUSION Circ_0044235 knockdown alleviated IL-1β-induced chondrocytes injury by regulating miR-375/PIK3R3 axis, confirming that circ_0044235 might be a potential target for OA treatment.
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Affiliation(s)
- Wenjie Qian
- Department of Joint Orthopedics, Wujin Hospital Affiliated with Jiangsu University, Changzhou City, Jiangsu, 213002, China
- Department of Joint Orthopedics, the Wujin Clinical College of Xuzhou Medical University, Changzhou City, Jiangsu, 213002, China
| | - Kai Mei
- Department of Joint Orthopedics, Wujin Hospital Affiliated with Jiangsu University, Changzhou City, Jiangsu, 213002, China
- Department of Joint Orthopedics, the Wujin Clinical College of Xuzhou Medical University, Changzhou City, Jiangsu, 213002, China
| | - Lei Zhu
- Department of Joint Orthopedics, Wujin Hospital Affiliated with Jiangsu University, Changzhou City, Jiangsu, 213002, China
- Department of Joint Orthopedics, the Wujin Clinical College of Xuzhou Medical University, Changzhou City, Jiangsu, 213002, China
| | - Ying Chu
- Department of science & education, Wujin Hospital Affiliated with Jiangsu University, Changzhou City, Jiangsu, 213002, China
- Department of science & education, the Wujin Clinical College of Xuzhou Medical University, Changzhou City, Jiangsu, 213002, China
| | - Jinpeng Lv
- Changzhou University, Changzhou City, Jiangsu, 213164, China
| | - Changjun Yun
- Department of Joint Orthopedics, Wujin Hospital Affiliated with Jiangsu University, Changzhou City, Jiangsu, 213002, China.
- Department of Joint Orthopedics, the Wujin Clinical College of Xuzhou Medical University, Changzhou City, Jiangsu, 213002, China.
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Chen Z, Du F, Zhang R, Wu Q, Lu Z, Zhang RL, Wang Q. ADAMTS5 Promotes Permeability of the Blood-Brain Barrier during Treponema pallidum Subspecies pallidum Invading the Central Nervous System. ACS Infect Dis 2024; 10:1222-1231. [PMID: 38536197 DOI: 10.1021/acsinfecdis.3c00664] [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] [Indexed: 04/13/2024]
Abstract
The pathogenesis of neurosyphilis remains unclear. A previous study found a noteworthy up-regulation of a disintegrin and metalloproteinase with thrombospondin type 1 motif 5 (ADAMTS5) gene in human brain microvascular endothelial cells cocultured with Treponema pallidum subspecies pallidum (Tp). To investigate the ADAMTS5 role in Tp invading the central nervous system (CNS), we conducted relevant experiments. Our study revealed that Tp caused an increase in human cortical microvascular endothelial cell/D3 (hCMEC/D3) barrier permeability and significantly enhanced ADAMTS5 expression. The heightened permeability of the hCMEC/D3 barrier was effectively mitigated by inhibiting ADAMTS5. During this process, Tp promoted interleukin-1β production, which, in turn, facilitated ADAMTS5 expression. Furthermore, Tp significantly reduced the glycocalyx on the surface of hCMEC/D3 cells, which was also ameliorated by inhibiting ADAMTS5. Additionally, ADAMTS5 and endothelial glycocalyx components notably increased in the cerebrospinal fluid of HIV-negative neurosyphilis patients. This research provided the first demonstration of the ADAMTS5 role in Tp invading the CNS and offered new insight into neurosyphilis pathogenesis.
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Affiliation(s)
- Zuoxi Chen
- Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China
| | - Fangzhi Du
- Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China
| | - Ruihua Zhang
- Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China
| | - Qingyun Wu
- Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China
| | - Zhiyu Lu
- Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China
| | - Rui-Li Zhang
- Department of Dermatology, The Second Affiliated Hospital of Nanjing Medical University, Nanjing 210003, China
| | - Qianqiu Wang
- Hospital for Skin Diseases, Institute of Dermatology, Chinese Academy of Medical Sciences and Peking Union Medical College, Nanjing 210042, China
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Ma J, Yu P, Ma S, Li J, Wang Z, Hu K, Su X, Zhang B, Cheng S, Wang S. Bioinformatics and Integrative Experimental Method to Identifying and Validating Co-Expressed Ferroptosis-Related Genes in OA Articular Cartilage and Synovium. J Inflamm Res 2024; 17:957-980. [PMID: 38370466 PMCID: PMC10871044 DOI: 10.2147/jir.s434226] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 01/13/2024] [Indexed: 02/20/2024] Open
Abstract
Purpose Osteoarthritis (OA) is the most common joint disease worldwide and is the primary cause of disability and chronic pain in older adults.Ferroptosis is a type of programmed cell death characterized by aberrant iron metabolism and reactive oxygen species accumulation; however, its role in OA is not known. Methods To identify ferroptosis markers co-expressed in articular cartilage and synovium samples from patients with OA, in silico analysis was performed.Signature genes were analyzed and the results were evaluated using a ROC curve prediction model.The biological function, correlation between Signature genes, immune cell infiltration, and ceRNA network analyses were performed. Signature genes and ferroptosis phenotypes were verified through in vivo animal experiments and clinical samples. The expression levels of non-coding RNAs in samples from patients with OA were determined using qRT-PCR. ceRNA network analysis results were confirmed using dual-luciferase assays. Results JUN, ATF3, and CDKN1A were identified as OA- and ferroptosis-associated signature genes. GSEA analysis demonstrated an enrichment of these genes in immune and inflammatory responses, and amino acid metabolism. The CIBERSORT algorithm showed a negative correlation between T cells and these signature genes in the cartilage, and a positive correlation in the synovium. Moreover, RP5-894D12.5 and FAM95B1 regulated the expression of JUN, ATF3, and CDKN1A by competitively binding to miR-1972, miR-665, and miR-181a-2-3p. In vivo, GPX4 was downregulated in both OA cartilage and synovium; however, GPX4 and GSH were downregulated, while ferrous ions were upregulated in patient OA cartilage and synovium samples, indicating that ferroptosis was involved in the pathogenesis of OA. Furthermore, JUN, ATF3, and CDKN1A expression was downregulated in both mouse and human OA synovial and cartilage tissues. qRT-PCR demonstrated that miR-1972, RP5-894D12.5, and FAM95B1 were differentially expressed in OA tissues. Targeted interactions between miR-1972 and JUN, and a ceRNA regulatory mechanism between RP5-894D12.5, miR-1972, and JUN were confirmed by dual-luciferase assays. Conclusion This study identified JUN, ATF3, and CDKN1A as possible diagnostic biomarkers and therapeutic targets for joint synovitis and OA. Furthermore, our finding indicated that RP5-894D12.5/miR-1972/JUN was a potential ceRNA regulatory axis in OA, providing an insight into the connection between ferroptosis and OA.
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Affiliation(s)
- Jinxin Ma
- School of Osteopathy, Henan University of Chinese Medicine, Zhengzhou, People’s Republic of China
| | - Peng Yu
- School of Osteopathy, Henan University of Chinese Medicine, Zhengzhou, People’s Republic of China
| | - Shang Ma
- School of Osteopathy, Henan University of Chinese Medicine, Zhengzhou, People’s Republic of China
| | - Jinjin Li
- School of Osteopathy, Henan University of Chinese Medicine, Zhengzhou, People’s Republic of China
| | - Zhen Wang
- School of Osteopathy, Henan University of Chinese Medicine, Zhengzhou, People’s Republic of China
| | - Kunpeng Hu
- School of Osteopathy, Henan University of Chinese Medicine, Zhengzhou, People’s Republic of China
| | - Xinzhe Su
- School of Osteopathy, Henan University of Chinese Medicine, Zhengzhou, People’s Republic of China
| | - Bei Zhang
- School of Osteopathy, Henan University of Chinese Medicine, Zhengzhou, People’s Republic of China
| | - Shao Cheng
- School of Osteopathy, Henan University of Chinese Medicine, Zhengzhou, People’s Republic of China
- Department of Arthropathy, Henan Province Hospital of Chinese Medicine (The Second Affiliated Hospital of Henan University of Chinese Medicine), Zhengzhou, People’s Republic of China
- School of Osteopathy, Henan Province Engineering Research Center of Basic and Clinical Research of Bone and Joint Repair in Chinese Medicine, Zhengzhou, People’s Republic of China
| | - Shangzeng Wang
- School of Osteopathy, Henan University of Chinese Medicine, Zhengzhou, People’s Republic of China
- Department of Arthropathy, Henan Province Hospital of Chinese Medicine (The Second Affiliated Hospital of Henan University of Chinese Medicine), Zhengzhou, People’s Republic of China
- School of Osteopathy, Henan Province Engineering Research Center of Basic and Clinical Research of Bone and Joint Repair in Chinese Medicine, Zhengzhou, People’s Republic of China
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Li Z, Lu J. CircRNAs in osteoarthritis: research status and prospect. Front Genet 2023; 14:1173812. [PMID: 37229197 PMCID: PMC10203419 DOI: 10.3389/fgene.2023.1173812] [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: 02/25/2023] [Accepted: 04/18/2023] [Indexed: 05/27/2023] Open
Abstract
Osteoarthritis (OA) is the most common joint disease globally, and its progression is irreversible. The mechanism of osteoarthritis is not fully understood. Research on the molecular biological mechanism of OA is deepening, among which epigenetics, especially noncoding RNA, is an emerging hotspot. CircRNA is a unique circular noncoding RNA not degraded by RNase R, so it is a possible clinical target and biomarker. Many studies have found that circRNAs play an essential role in the progression of OA, including extracellular matrix metabolism, autophagy, apoptosis, the proliferation of chondrocytes, inflammation, oxidative stress, cartilage development, and chondrogenic differentiation. Differential expression of circRNAs was also observed in the synovium and subchondral bone in the OA joint. In terms of mechanism, existing studies have mainly found that circRNA adsorbs miRNA through the ceRNA mechanism, and a few studies have found that circRNA can serve as a scaffold for protein reactions. In terms of clinical transformation, circRNAs are considered promising biomarkers, but no large cohort has tested their diagnostic value. Meanwhile, some studies have used circRNAs loaded in extracellular vesicles for OA precision medicine. However, there are still many problems to be solved in the research, such as the role of circRNA in different OA stages or OA subtypes, the construction of animal models of circRNA knockout, and more research on the mechanism of circRNA. In general, circRNAs have a regulatory role in OA and have particular clinical potential, but further studies are needed in the future.
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Affiliation(s)
- Zhuang Li
- School of Medicine, Southeast University, Nanjing, Jiangsu, China
| | - Jun Lu
- Department of Orthopaedics, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, Jiangsu, China
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Wang H, Zhao J, Wang J. Role of circular RNAs in osteoarthritis: update on pathogenesis and therapeutics. Mol Genet Genomics 2023; 298:791-801. [PMID: 37086279 DOI: 10.1007/s00438-023-02021-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 04/12/2023] [Indexed: 04/23/2023]
Abstract
Osteoarthritis (OA) is a common and crippling joint disease characterized by cartilage degeneration, subchondral bone sclerosis, and synovitis. The main clinical manifestations of OA are chronic joint pain and impaired mobility, which seriously affect patient's quality of life. Circular RNAs (circRNAs) are noncoding RNAs that are widely discovered in eukaryotic cells. Unlike standard linear RNAs, circRNAs form a covalently closed continuous loop structure without a 5' or 3' polarity. Various experiments in recent years have confirmed that numerous circRNAs appear to be differentially expressed in OA cartilage and synovium. And they are closely associated with various pathological progressions in OA, such as extracellular matrix degradation, chondrocyte apoptosis, and inflammation. In this review, we briefly described the biogenesis, characterization, and functions of circRNAs. And we focused on the relationships between circRNAs and OA progression. At last, we further discussed the prospects of clinical applications of circRNAs in OA, with the expectation to provide feasible directions for OA diagnosis and treatment.
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Affiliation(s)
- Hulin Wang
- Department of Orthopedics, Wuwei People's Hospital, Xuanwu Street, Liangzhou District, Wuwei, Gansu, 733000, People's Republic of China
| | - Junjie Zhao
- Department of Orthopedics, Wuwei People's Hospital, Xuanwu Street, Liangzhou District, Wuwei, Gansu, 733000, People's Republic of China
| | - Jin Wang
- Department of Orthopedics, Wuwei People's Hospital, Xuanwu Street, Liangzhou District, Wuwei, Gansu, 733000, People's Republic of China.
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