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Liu P, Li Z, Zhang H, Wang Y, Liao Y, Guo Y, Wang C, Zou Y, Zou R, Niu L. Mild heat stress promotes the differentiation of odontoblast-like MDPC-23 cells via yes-associated protein. Int J Hyperthermia 2024; 41:2369749. [PMID: 38925872 DOI: 10.1080/02656736.2024.2369749] [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: 12/21/2023] [Accepted: 06/13/2024] [Indexed: 06/28/2024] Open
Abstract
PURPOSE Dentin hypersensitivity (DH) is a prevalent condition, but long-term effective treatments are scarce. Differentiation of odontoblast-like cells is promising for inducing tertiary dentinogenesis and ensuring sustained therapeutic efficacy against DH. This study examined the effects and mechanism of action of mild heat stress (MHS) on the differentiation of odontoblast-like MDPC-23 cells. METHODS We used a heating device to accurately control the temperature and duration, mimicking the thermal microenvironment of odontoblast-like cells. Using this device, the effects of MHS on cell viability and differentiation were examined. Cell viability was assessed using the MTT assay. The expression and nucleoplasmic ratio of the yes-associated protein (YAP) were examined by western blotting and immunofluorescence. The gene expression levels of heat shock proteins (HSPs) and dentin matrix protein-1 (DMP1) were measured using qPCR. Dentin sialophosphoprotein (DSPP) expression was evaluated using immunofluorescence and immunoblotting. Verteporfin was used to inhibit YAP activity. RESULTS Mild heat stress (MHS) enhanced the odontoblast differentiation of MDPC-23 cells while maintaining cell viability. MHS also increased YAP activity, as well as the levels of HSP25 mRNA, HSP70 mRNA, HSP90α mRNA, DMP1 mRNA, and DSPP protein. However, after YAP inhibition, both cell viability and the levels of HSP90α mRNA, DMP1 mRNA, and DSPP protein were reduced. CONCLUSION YAP plays a crucial role in maintaining cell viability and promoting odontoblast differentiation of MDPC-23 cells under MHS. Consequently, MHS is a potential therapeutic strategy for DH, and boosting YAP activity could be beneficial for maintaining cell viability and promoting odontoblast differentiation.
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Affiliation(s)
- Peiqi Liu
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Zhen Li
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Hui Zhang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, China
| | - Yijie Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Yuxin Liao
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Yi Guo
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Chenxu Wang
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Yuanwu Zou
- Department of Epidemiology and Biostatistics, School of Public Health, Xi'an Jiaotong University Health Science Center, Xi'an, China
| | - Rui Zou
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Lin Niu
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Clinical Research Center of Shaanxi Province for Dental and Maxillofacial Diseases, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- College of Stomatology, Xi'an Jiaotong University, Xi'an, China
- Bioinspired Engineering and Biomechanics Center (BEBC), Xi'an Jiaotong University, Xi'an, China
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Roufayel R, Kadry S. Examination of the Role of miR-23a in the Development of Thermotolerance. Curr Mol Med 2019; 20:194-201. [PMID: 31736444 DOI: 10.2174/1566524019666191021111028] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2019] [Revised: 09/30/2019] [Accepted: 10/03/2019] [Indexed: 11/22/2022]
Abstract
BACKGROUND Thermotolerance is an acquired state of increased heat resistance that occurs following exposure to non-lethal proteotoxic stress. A large body of evidences implicates that molecular chaperon members belonging to the heat shock protein family could be acting as potential mediators of the thermotolerant state. OBJECTIVE Recent evidence has demonstrated heat shock proteins HSP90, HSP70 and HSP27 have inhibited heat-induced cell death by intervening at various steps in stressinduced apoptotic pathways. Previous studies have shown that HSP70 prevented heatinduced apoptosis by preventing the NOXA dependent decrease in MCL-1 levels leading to both BAX activation and cytochrome c release from mitochondria. We have also demonstrated that HSP70 expressing cells have enhanced levels of miR-23a prevent heat-induced increase in NOXA levels and suppress apoptosis. METHODS Stably transfected cell lines expressing either a control shRNA or a miR-23a targeting shRNA are quantified using both RT-PCR and semi-quantitative RT-PCR to determine the effect of different hyperthermic exposure treatment on miR-23a and Noxa mRNA expression levels. RESULTS This study shows that thermotolerant-induced pre-heat shock treatment is capable of increasing miR-23a levels. Furthermore, stable cell clones expressing a miR- 23a targeting shRNA having reduced miR-23a levels are incapable of developing a thermotolerance state, leading to apoptosis. CONCLUSION These results demonstrate the novel finding that miR-23a is an important factor in the development of the thermotolerant state.
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Affiliation(s)
- Rabih Roufayel
- College of Engineering and Technology, American University of the Middle East, Kuwait.,Department of Molecular and Cellular Biology, University of Guelph, 50 Stone Road East, Guelph, Notario, N1G 2W1, Canada
| | - Seifedine Kadry
- Department of Mathematics and Computer Science, Faculty of Science, Beirut Arab University, Lebanon
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