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Huang Z, Huang L, Ding J, Huang Y, Huang X, Li T. ILK inhibition reduces osteophyte formation through suppression of osteogenesis in BMSCs via Akt/GSK-3β/β-catenin pathway. Mol Biol Rep 2024; 51:421. [PMID: 38483756 DOI: 10.1007/s11033-024-09336-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Accepted: 02/08/2024] [Indexed: 03/19/2024]
Abstract
BACKGROUND Osteophyte development is a common characteristic of inflammatory skeletal diseases. Elevated osteogenic differentiation of bone marrow mesenchymal stem cells (BMSCs) participates in pathological osteogenesis. Integrin-linked kinase (ILK) positively regulates the osteoblastic differentiation of osteoprogenitors, but whether the ILK blockage prevents osteophytes and its potential mechanism is still unknown. Furthermore, the low-dose tumor necrosis factor-α (TNF-α) promotes osteogenic differentiation, but a lack of study reports on the relationship between this cytokine and ILK. OSU-T315 is a small ILK inhibitor, which was used to determine the effect of ILK inhibition on osteogenesis and osteophyte formation. METHODS AND RESULTS The osteogenesis of BMSCs was evaluated using Alizarin red S staining, alkaline phosphatase, collagen type I alpha 2 chain, and bone gamma-carboxyglutamate protein. The expression and phosphorylation of protein were assessed through western blot. Immunofluorescence was employed to display the distribution of β-catenin. microCT, hematoxylin-eosin, and safranin O/fast green staining were utilized to observe the osteophyte formation in collagen antibody-induced arthritis mice. We found that ILK blockage significantly declined calcium deposition and osteoblastic markers in a dose- and time-dependent manner. Furthermore, it lowered osteogenesis in the TNF-α-induced inflammatory microenvironment by diminishing the effect of ILK and inactivating the Akt/ GSK-3β/ β-catenin pathway. Nuclear β-catenin was descended by OSU-T315 as well. Finally, the ILK suppression restrained osteophyte formation but not inflammation in vivo. CONCLUSIONS ILK inhibition lowered osteogenesis in TNF-α-related inflammatory conditions by deactivating the Akt/ GSK-3β/ β-catenin pathway. This may be a potential strategy to alleviate osteophyte development in addition to anti-inflammatory treatment.
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Affiliation(s)
- Zhixiang Huang
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Rheumatology and Immunology, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Guangzhou, 510317, China
| | - Lixin Huang
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Rheumatology and Immunology, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Guangzhou, 510317, China
- Department of Rheumatology, Fujian Medical University Union Hospital, Fuzhou, China
| | - Jiali Ding
- Department of Rheumatology and Immunology, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Guangzhou, 510317, China
- Guangdong Medical University, Zhanjiang, China
| | - Yukai Huang
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Rheumatology and Immunology, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Guangzhou, 510317, China
| | - Xuechan Huang
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China
- Department of Rheumatology and Immunology, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Guangzhou, 510317, China
| | - Tianwang Li
- The Second School of Clinical Medicine, Southern Medical University, Guangzhou, China.
- Department of Rheumatology and Immunology, Guangdong Second Provincial General Hospital, No. 466, Xingangzhong Road, Guangzhou, 510317, China.
- Guangdong Medical University, Zhanjiang, China.
- Department of Rheumatology and Immunology, Zhaoqing Central People's Hospital, Zhaoqing, China.
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