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Xu T, Shuai J, Gu Z, Wu M. Salubrinal alleviates cartilage degradation in a rabbit temporomandibular joint osteoarthritis model. Oral Dis 2023. [PMID: 37660361 DOI: 10.1111/odi.14731] [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: 04/05/2023] [Revised: 08/08/2023] [Accepted: 08/21/2023] [Indexed: 09/05/2023]
Abstract
OBJECTIVE To investigate and explain the beneficial effects of local intra-articular injection of Salubrinal on temporomandibular joint osteoarthritis (TMJOA) using a rabbit model of anterior disc displacement (ADD). METHODS Rabbits were divided and subjected to surgical ADD. Salubrinal was administered by intra-articular injection in the TMJ every other day for 2 and 4 weeks after operation. Histological examination and TUNEL staining were then performed. Immunohistochemistry, quantitative real-time PCR, and Western blot analysis were employed to evaluate the expression of endoplasmic reticulum (ER) stress-related markers, catabolic factors, extracellular matrix proteins, inflammatory factors, and nuclear factor-kappa B (NF-κB) activation. RESULTS In the ADD groups, we found that Salubrinal partly reversed condylar cartilage deterioration according to the histological analysis. Salubrinal reduced chondrocytes apoptosis while increased matrix components including Collagen II and Aggrecan. Meanwhile, Salubrinal downregulated the catabolic expression of MMP13, ADAMTS5, VEGF, TNF-α, and IL-1β. We also observed that Salubrinal inhibited ER stress activation by reducing the expression of GRP78, CHOP, ATF4, and Caspase-12. Additionally, Salubrinal suppressed the phosphorylation of NF-κB. CONCLUSION These results indicate that Salubrinal alleviates cartilage degradation following ADD, suggesting that intra-articular injection of Salubrinal is a potential therapeutic approach for preventing TMJOA.
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Affiliation(s)
- Ting Xu
- Department of Stomatology, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China
| | - Jing Shuai
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China
| | - Zhiyuan Gu
- School of Stomatology, Zhejiang Chinese Medical University, Hangzhou, China
| | - Mengjie Wu
- Stomatology Hospital, School of Stomatology, Zhejiang University School of Medicine, Zhejiang Provincial Clinical Research Center for Oral Diseases, Key Laboratory of Oral Biomedical Research of Zhejiang Province, Engineering Research Center of Oral Biomaterials and Devices of Zhejiang Province, Hangzhou, China
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Zhou Y, Lin S, Huang Z, Zhang C, Wang H, Li B, Li H. Receptor-interacting protein 1 inhibition prevents mechanical stress-induced temporomandibular joint osteoarthritis by regulating apoptosis and later-stage necroptosis of chondrocytes. Arch Oral Biol 2023; 147:105612. [PMID: 36603515 DOI: 10.1016/j.archoralbio.2022.105612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2022] [Revised: 12/25/2022] [Accepted: 12/27/2022] [Indexed: 12/29/2022]
Abstract
OBJECTIVES Temporomandibular joint osteoarthritis (TMJ OA) is a common degenerative joint disease that has multiple causes. The abnormal stress distribution is known to be an important trigger of TMJ OA. This article explored the pathological changes of the condylar cartilage under 60 g mechanical force and whether the inhibition of Receptor-interacting protein 1 (RIP1) can protect stress-induced TMJ OA. MATERIAL AND METHODS We used a compressive mechanical force-induced-TMJ OA model and Lenti-virus targeting RIP1 to perform this study. A total of 72 male rats were used in the animal experiment. Each rat was injected with a negative control Lenti-shRNA in the right TMJ and Lenti-siRIP1 in the left TMJ and euthanized after 4 and 7 days, respectively. Quantitative real-time PCR, immunohistochemistry, Tunnel staining and Micro-CT were used to detect cartilage pathological changes and one way ANOVA with LSD analysis was used to determine statistical significance between groups. RESULTS The results identified the characteristics of the spatio-temporal changes in stress-induced TMJ OA. Under mechanical force, inflammation and apoptosis, which occur in the whole layer of mandibular cartilage, appear on the 4th day and persist till the 7th day. Necroptosis arises in the later stage of mechanical force and is mainly located in the transition layer. RIP1 inhibition through Lenti-virus could protect stress-induced mandibular cartilage thinning by inhibiting persisted apoptosis and later-stage necroptosis in the transition layer. CONCLUSIONS RIP1 plays an essential role in the destruction of mandibular cartilage under mechanical force. RIP1 inhibition through Lenti-virus could protect mechanical stress-induced TMJ OA.
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Affiliation(s)
- Yiwen Zhou
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China; Medical School of Nanjing University, Nanjing, China
| | - Shuang Lin
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Ziwei Huang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China; Medical School of Nanjing University, Nanjing, China
| | - Caixia Zhang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China; Medical School of Nanjing University, Nanjing, China
| | - Huijuan Wang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China; Medical School of Nanjing University, Nanjing, China
| | - Baochao Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China; Medical School of Nanjing University, Nanjing, China
| | - Huang Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China; Medical School of Nanjing University, Nanjing, China.
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Zhang C, Zhu M, Wang H, Wen J, Huang Z, Chen S, Zhao H, Li H. LOXL2 attenuates osteoarthritis through inactivating Integrin/FAK signaling. Sci Rep 2021; 11:17020. [PMID: 34426599 PMCID: PMC8382747 DOI: 10.1038/s41598-021-96348-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Accepted: 07/13/2021] [Indexed: 11/14/2022] Open
Abstract
Temporomandibular joint OA (TMJOA) is a common degenerative joint disease, leads to structural damage and ultimately loss of function. Matrix degradation is one of the first pathogenesis during the progression of OA, it was effective to inhibit matrix degradation to block the development of OA. In this study, an in vivo model (compressive mechanical force) and an in vitro model (IL-1β) were used to induce OA-like changes in TMJ cartilage and chondrocytes. We revealed lysyl oxidase like-2 (LOXL2) play a critical role in TMJOA. LOXL2 expression decreased in mechanical stress/IL-β induced TMJOA-like lesions in both in vivo models and in vitro models. Furthermore, recombinant LOXL2 (rhLOXL2) treatment ameliorated the degenerative changes induced by mechanical stress in vivo, including the thinning cartilage, down-expression of collagen II and proteoglycan, and over-expression of TNF-a, while LOXL2 antibody (anti-LOXL2) treatment exacerbated these changes. Mechanistically, the protection of LOXL2 in chondrocytes was induced partly through activation of the Integrin/FAK pathway. The inhibition of the Integrin/FAK pathway could neutralized the effects caused by rhLOXL2. Collectively, our study suggests that the LOXL2 plays a protective role in mechanical stress induced TMJOA-like changes, and the Integrin/FAK pathway may be a key downstream pathway in this process.
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Affiliation(s)
- Caixia Zhang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Mengjiao Zhu
- Shanghai Xuhui District Dental Center, 500 Fenglin Road, Shanghai, China
| | - Huijuan Wang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Juan Wen
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Ziwei Huang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Sheng Chen
- Department of Oral Pathology, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Hongting Zhao
- Medical School of Nanjing University, Nanjing, China
| | - Huang Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China.
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Huang Z, Yang R, Zhang L, Zhu M, Zhang C, Wen J, Li H. BRD4 inhibition alleviates mechanical stress-induced TMJ OA-like pathological changes and attenuates TREM1-mediated inflammatory response. Clin Epigenetics 2021; 13:10. [PMID: 33446277 PMCID: PMC7809762 DOI: 10.1186/s13148-021-01008-6] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2020] [Accepted: 01/07/2021] [Indexed: 12/17/2022] Open
Abstract
The aim of this paper was to investigate the protective effects of bromodomain containing 4 (BRD4) inhibition on the temporomandibular joint osteoarthritis (TMJ OA) induced by compressive mechanical stress and to explore the underlying mechanism. In vivo, a rat model of TMJ compressive loading device was used and BRD4 inhibitor was injected into the TMJ region. HE staining and micro-CT analysis were used for histological and radiographic assessment. Immunohistochemistry and qPCR were performed to detect inflammatory cytokines expressions. High-throughput ChIP-sequencing screening was performed to compare the BRD4 and H3K27ac binding patterns between condylar cartilage from control and mechanical force groups. In vitro, the mandibular condylar chondrocytes were treated with IL-1β. Small Interference RNA (siRNA) infection was used to silencing BRD4 or TREM1. qPCR was performed to detect inflammatory cytokines expressions. Our study showed that BRD4 inhibition can alleviate the thinning of condylar cartilage and subchondral bone resorption, as well as decrease the inflammatory factors expression both in vivo and in vitro. ChIP-seq analysis showed that BRD4 was more enriched in the promoter region of genes related to the stress and inflammatory pathways under mechanical stress in vivo. Trem1, a pro-inflammatory gene, was screened out from the overlapped BRD4 and H3K27ac increased binding sites, and Trem1 mRNA was found to be regulated by BRD4 inhibition both in vivo and in vitro. TREM1 inhibition reduced the expression of inflammatory factors induced by IL-1β in vitro. In summary, we concluded that BRD4 inhibition can protect TMJ OA-like pathological changes induced by mechanical stress and attenuate TREM1-mediated inflammatory response.
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Affiliation(s)
- Ziwei Huang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Ren Yang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Lu Zhang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Mengjiao Zhu
- Department of Orthodontics, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Caixia Zhang
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Juan Wen
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, Nanjing, China
| | - Huang Li
- Department of Orthodontics, Nanjing Stomatological Hospital, Medical School of Nanjing University, 30 Central Road, Nanjing, 210008, China.
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Excess hepsin proteolytic activity limits oncogenic signaling and induces ER stress and autophagy in prostate cancer cells. Cell Death Dis 2019; 10:601. [PMID: 31399560 PMCID: PMC6689070 DOI: 10.1038/s41419-019-1830-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Revised: 07/05/2019] [Accepted: 07/22/2019] [Indexed: 02/06/2023]
Abstract
The serine protease hepsin is frequently overexpressed in human prostate cancer (PCa) and is associated with matrix degradation and PCa progression in mice. Curiously, low expression of hepsin is associated with poor survival in different cancer types, and transgenic overexpression of hepsin leads to loss of viability in various cancer cell lines. Here, by comparing isogenic transfectants of the PCa cell line PC-3 providing inducible overexpression of wild-type hepsin (HPN) vs. the protease-deficient mutant HPNS353A, we were able to attribute hepsin-mediated tumor-adverse effects to its excess proteolytic activity. A stem-like expression signature of surface markers and adhesion molecules, Notch intracellular domain release, and increased pericellular protease activity were associated with low expression levels of wild-type hepsin, but were partially lost in response to overexpression. Instead, overexpression of wild-type hepsin, but not of HPNS353A, induced relocalization of the protein to the cytoplasm, and increased autophagic flux in vitro as well as LC3B punctae frequency in tumor xenografts. Confocal microscopy revealed colocalization of wild-type hepsin with both LC3B punctae as well as with the autophagy cargo receptor p62/SQSTM1. Overexpression of wild type, but not protease-deficient hepsin induced expression and nuclear presence of CHOP, indicating activation of the unfolded protein response and ER-associated protein degradation (ERAD). Whereas inhibitors of ER stress and secretory protein trafficking slightly increased viability, combined inhibition of the ubiquitin-proteasome degradation pathway (by bortezomib) with either ER stress (by salubrinal) or autophagy (by bafilomycin A1) revealed a significant decrease of viability during overexpression of wild-type hepsin in PC-3 cells. Our results demonstrate that a precise control of Hepsin proteolytic activity is critical for PCa cell fate and suggest, that the interference with ERAD could be a promising therapeutic option, leading to induction of proteotoxicity in hepsin-overexpressing tumors.
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Mutsuzaki H, Nakajima H, Sakane M. Extension of knee immobilization delays recovery of histological damages in the anterior cruciate ligament insertion and articular cartilage in rabbits. J Phys Ther Sci 2018; 30:140-144. [PMID: 29410585 PMCID: PMC5788794 DOI: 10.1589/jpts.30.140] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Accepted: 10/24/2017] [Indexed: 12/15/2022] Open
Abstract
[Purpose] To investigate the influence of knee immobilization period on recovery of
histological damages in the anterior cruciate ligament (ACL) insertion and articular
cartilage in rabbits. This knowledge is important for determining the appropriate
rehabilitation approach for patients with ligament injuries, fracture, disuse atrophy, and
degenerative joint disease. [Materials and Methods] Forty-eight male Japanese white
rabbits were divided equally into the remobilization and control groups. The
remobilization group had the right knee surgically immobilized, and was divided equally
into four subgroups according to the duration of immobilization (1, 2, 4 and 8 weeks).
After the immobilization was removed, the rabbits moved freely for 8 weeks. The control
group underwent sham operation and followed the same time course as the remobilization
group. The chondrocyte apoptosis rate and chondrocyte proliferation rate in the ACL
insertion and articular cartilage were analyzed after remobilization. [Results] In the ACL
insertion, the remobilization group had a higher chondrocyte apoptosis rate than the
control group after 8 weeks of immobilization, and a lower chondrocyte proliferation rate
than the control group after 4 and 8 weeks of immobilization. In the articular cartilage,
the remobilization group had a lower chondrocyte proliferation rate than the control group
after 8 weeks of immobilization. After 8 weeks of remobilization, the ACL insertion and
articular cartilage are not completely recovered after 4 and 8 weeks of immobilization,
respectively. [Conclusion] Our results suggest that 8 weeks of remobilization will result
in recovery of the ACL insertion after 2 weeks of knee immobilization, and recovery of the
articular cartilage after 4 weeks of knee immobilization. If 8 weeks of immobilization
occurs, a remobilization duration of more than 8 weeks may be necessary.
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Affiliation(s)
- Hirotaka Mutsuzaki
- Department of Orthopaedic Surgery, Ibaraki Prefectural University of Health Sciences: 4669-2 Ami, Inashiki-gun, Ibaraki 300-0394, Japan
| | | | - Masataka Sakane
- Department of Orthopaedic Surgery, Tsukuba Gakuen Hospital, Japan
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