1
|
Zhao Y, Chen J, Kong L, Zhang Q, Zhu Q. The Immune Regulatory Mechanism of Adrenomedullin on Promoting the Proliferation and Differentiation of Dental Pulp Stem Cells. Int Dent J 2024:S0020-6539(24)00125-4. [PMID: 38806333 DOI: 10.1016/j.identj.2024.04.022] [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: 03/21/2024] [Revised: 04/16/2024] [Accepted: 04/23/2024] [Indexed: 05/30/2024] Open
Abstract
OBJECTIVE This research seeks to analyse the immunomodulatory impacts of adrenomedullin (ADM) on macrophages induced by bacterial lipopolysaccharide and to investigate the influence of macrophage-conditioned media from various stimulating factors on the biological activity of dental pulp stem cells (DPSCs) in vitro. METHODS The polarisation effect of ADM on macrophages was analysed through cell immunofluorescence staining and flow cytometry. Potential mechanisms were explored through transcriptomics and metabolomics. The impact of different macrophage-conditioned media on the biological activity of DPSCs was evaluated through western blotting, Realtime fluorescence quantitative, alkaline phosphatase activity assay, and eosin red staining. Each experiment was performed with 3 biological and 3 technical duplicate measurements. Statistical analysis was performed with t test and one-way ANOVA, and mathematical significance defined as P < .05. RESULTS ADM can reverse polarisation of macrophages towards M2 phenotype by Lipopolysaccharide and the conditioned media of ADM-induced M2 polarised macrophages significantly enhances the proliferation and differentiation of DPSCs. The mechanism may involve the metabolic reprogramming of macrophages by ADM, specifically promoting the metabolic shift from glycolysis to mitochondrial oxidative phosphorylation in Lipopolysaccharide-induced macrophages. CONCLUSION These results indicate that ADM is involved in suppressing inflammation and enhancing the proliferation and differentiation of DPSCs by reprogramming macrophage metabolism.
Collapse
Affiliation(s)
- Yangpeng Zhao
- Department of Stomatology, The First Affiliated Hospital of Naval Medical University, Changhai Hospital, Shanghai, China
| | - Jianan Chen
- Department of Stomatology, The First Affiliated Hospital of Naval Medical University, Changhai Hospital, Shanghai, China
| | - Lingtong Kong
- Department of Orthopedics, The First Affiliated Hospital of Naval Medical University, Changhai Hospital, Shanghai, China
| | - Qian Zhang
- Department of Stomatology, The First Affiliated Hospital of Naval Medical University, Changhai Hospital, Shanghai, China
| | - Qiang Zhu
- Department of Stomatology, The First Affiliated Hospital of Naval Medical University, Changhai Hospital, Shanghai, China.
| |
Collapse
|
2
|
Dou W, Xie J, Chen J, Zhou J, Xu Z, Wang Z, Zhu Q. Overexpression of adrenomedullin (ADM) alleviates the senescence of human dental pulp stem cells by regulating the miR-152/CCNA2 pathway. Cell Cycle 2023; 22:565-579. [PMID: 36310381 PMCID: PMC9928452 DOI: 10.1080/15384101.2022.2135621] [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] [Indexed: 11/03/2022] Open
Abstract
The limitation of human dental pulp stem cells (DPSCs), which have potential application value in regenerative medicine, is that they are prone to age in vitro. Studies have shown adrenomedullin (ADM) is believed to promote the proliferation of human DPSCs, but whether it can also affect aging remains to be investigated. A lentivirus vector was used to construct human DPSCs overexpressing ADM. Senescence tests were carried out on cells of the 7th and 15th passage. Transcriptome analysis was conducted to analyze microRNA expression regulation changes after human DPSCs overexpressed ADM. H2O2 induced the aging model of human DPSCs, and we examined the mechanism of recovery of aging through transfection experiments with miR-152 mimic, pCDH-CCNA2, and CCNA2 siRNA. Overexpression of ADM significantly upregulated the G2/M phase ratio of human DPSCs in natural passage culture (P = 0.001) and inhibited the expression of p53 (P = 0.014), P21 WAF1 (P = 0.015), and P16 INK4A (P = 0.001). Decreased ROS accumulation was observed in human DPSCs during long-term natural passage (P = 0.022). Transcriptome analysis showed that miR-152 was significantly upregulated during human DPSC senescence (P = 0.001) and could induce cell senescence by directly targeting CCNA2. Transfection with miR-152 mimic significantly reversed the inhibitory effect of ADM overexpression on p53 (P = 0.006), P21 WAF1 (P = 0.012), and P16 INK4A (P = 0.01) proteins in human DPSCs (H2O2-induced). In contrast, pCDH-CCNA2 weakened the effect of the miR-152 mimic, thus promoting cell proliferation and antiaging. ADM-overexpressing human DPSCs promote cell cycle progression and resist cellular senescence through CCNA2 expression promotion by inhibiting miR-152.
Collapse
Affiliation(s)
- Wenxue Dou
- Department of Stomatology, The First Affiliated Hospital of Naval Medical University: Changhai Hospital, Shanghai, China
| | - Jiaye Xie
- Department of Stomatology, Tongren Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Jianan Chen
- Department of Stomatology, The First Affiliated Hospital of Naval Medical University: Changhai Hospital, Shanghai, China
| | - Jiajun Zhou
- Department of Stomatology, Eastern Hepatobiliary Surgery Hospital, Shanghai, China
| | - Zunyue Xu
- Department of Stomatology, Shanghai Songjiang District Central Hospital, Shanghai, China
| | - Zheng Wang
- Department of Stomatology, Tongren Hospital Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Qiang Zhu
- Department of Stomatology, The First Affiliated Hospital of Naval Medical University: Changhai Hospital, Shanghai, China,CONTACT Qiang Zhu Department of Stomatology, The First Affiliated Hospital of Naval Medical University: Changhai Hospital, Shanghai200433, China
| |
Collapse
|
3
|
Akt-GSK3β-mPTP pathway regulates the mitochondrial dysfunction contributing to odontoblasts apoptosis induced by glucose oxidative stress. Cell Death Dis 2022; 8:168. [PMID: 35383148 PMCID: PMC8983683 DOI: 10.1038/s41420-022-00981-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2022] [Revised: 03/19/2022] [Accepted: 03/23/2022] [Indexed: 02/07/2023]
Abstract
Diabetes Mellitus can cause dental pulp cells apoptosis by oxidative stress, and affect the integrity and function of dental pulp tissue. Mitochondria are the main attack targets of oxidative stress and have a critical role in apoptosis. However, whether mitochondria are involved in dental pulp damage caused by diabetes mellitus remains unclear. This study aimed to investigate the role of mitochondria in the apoptosis of odontoblast-like cell line (mDPC6T) induced by glucose oxidative stress, and to explore its possible mechanism. We established an oxidative stress model in vitro using glucose oxidase/glucose to simulate the pathological state under diabetic conditions. We found that the opening of mitochondrial permeability transition pore (mPTP) contributed to the apoptosis of mDPC6T treated with glucose oxidase, as evidenced by enhanced mitochondrial reactive oxygen species (mtROS) and intracellular Ca2+ disorder, significantly reduced mitochondrial membrane potential (MMP) and ATP production. Antioxidant N-acetylcysteine (NAC) or Cyclosporine A (mPTP inhibitor) blocked the mPTP opening, which significantly attenuated mitochondrial dysfunction and apoptosis induced by glucose oxidative stress. In addition, we found that glucose oxidative stress stimulated mPTP opening may through inhibition of Akt-GSK3β pathway. This study provides a new insight into the mitochondrial mechanism underlying diabetes-associated odontoblast-like cell apoptosis, laying a foundation for the prevention and treatment of diabetes-associated pulp injury.
Collapse
|
4
|
Tian S, Wang J, Dong F, Du N, Li W, Song P, Liu Y. Concentrated Growth Factor Promotes Dental Pulp Cells Proliferation and Mineralization and Facilitates Recovery of Dental Pulp Tissue. Med Sci Monit 2019; 25:10016-10028. [PMID: 31877561 PMCID: PMC6944166 DOI: 10.12659/msm.919316] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
Background Dental pulp cells (DPCs) play vital roles in the recovery of dental pulp tissue. Concentrated growth factor (CGF) can promote proliferation and mineralization of various cells. However, the functions of CGF on DPCs and dental pulp tissue are unclear. The object of our study was to identify the roles of CGF in DPCs proliferation and mineralization in vitro and to assess the effects of CGF on direct pulp capping in vivo. Material/Methods We performed CCK-8 and Transwell assay to detect proliferation and migration activity of DPCs. Alizarin Red staining was performed to examine mineralized nodules. Alkaline phosphatase activity test was used to measure the mineralization capacity of DPCs. We assessed the odontogenic differentiation gene expression level by Western blot and qPCR. The effect of CGF on direct pulp capping in vivo were evaluated by radiography and histopathology. Results CGF increased the number of proliferative and migratory DPCs. CGF enhanced DPCs mineralized nodules and improved the gene expression levels of DSPP, DMP-1, BSP, and ALP. CGF upregulated the protein levels of ALP, BMP2, SMAD5, Runx2, and p-Smad, and the effect could be partially reversed by Noggin. CGF promoted pulp recovery and kept its vitality in directly pulp capping. Conclusions CGF promotes DPCs proliferation and mineralization. It regulates the mineralization of DPCs via the BMP2/SMAD5/Runx2 signaling pathway. CGF can be used as the effective graft for direct pulp capping.
Collapse
Affiliation(s)
- Songbo Tian
- Department of Oral Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China (mainland)
| | - Jie Wang
- Department of Oral Pathology, College of Stomatology, Hebei Medical University, Shijiazhuang, Hebei, China (mainland)
| | - Fusheng Dong
- Department of Oral and Maxillofacial Surgery, College of Stomatology, Hebei Medical University, Shijiazhuang, Hebei, China (mainland)
| | - Nan Du
- Department of Oral Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China (mainland)
| | - Wenjing Li
- Department of Oral Medicine, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China (mainland)
| | - Peng Song
- Department of Oral Pathology, College of Stomatology, Hebei Medical University, Shijiazhuang, Hebei, China (mainland)
| | - Yanping Liu
- Physical Examination Center, The Second Hospital of Hebei Medical University, Shijiazhuang, Hebei, China (mainland)
| |
Collapse
|
5
|
Molecular Mechanisms of Dentine-Pulp Complex Response Induced by Microbiome of Deep Caries. ARS MEDICA TOMITANA 2019. [DOI: 10.2478/arsm-2019-0012] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Abstract
Deep caries progress is associated with tertiary dentin formation and additional reversible or irreversible dental pulp inflammation. It seems that some particular signs of pain in irreversible pulpitis are associated to a particular caries microflora. Streptococcus species, Parvimonas micra and Dialister invisus are prevailing in cases of throbbing pain while Streptococcus mutans is incriminated in sensitivity to vertical percussion of tooth. Continuous pain is thought to be the clinical outcome of Lactobacillus implication. A better understanding of molecular signals and mechanisms induced by microbiome of deep caries that orchestrate the modulation of dental pulp complex response toward tertiary dentinogenesis or pulp inflammation it is supposed to improve diagnosis and conservative therapies of vital pulp.
Collapse
|
6
|
Hou T, Li S, Zhang G, Li Y. High-fluence low-power laser irradiation promotes odontogenesis and inflammation resolution in periodontitis by enhancing stem cell proliferation and differentiation. Int J Mol Med 2018; 42:2107-2119. [PMID: 30085334 PMCID: PMC6108882 DOI: 10.3892/ijmm.2018.3804] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2018] [Accepted: 07/25/2018] [Indexed: 11/05/2022] Open
Abstract
Periodontitis can exert a severe impact on the life of patients, and the use of stem cell therapy for this disease is promising. The inflammatory response consequent to periodontitis can promote stem cell proliferation. Activated inflammation triggers inhibitory cytokine secretion, thus reducing inflammation subsequent to stem cell activation. High-fluence low-power laser irradiation (HF-LPLI) has the ability to regulate stem cell function through its effect on inflammation. Thus, the aim of the present study was to examine whether HF-LPLI is able to activate stem cells to promote regeneration in periodontitis by promoting inflammation resolution, as well as to evaluate the underlying mechanism of action if an effect is observed. Stem cells were treated with HF-LPLI following inflammation activation. Reverse transcription-quantitative polymerase chain reaction and EdU assay were used to evaluate cell proliferation and differentiation. Flow cytometry and immunofluorescence were also used to detect the ability of HF-LPLI to regulate the surrounding inflammatory environment. Animal models of periodontal disease were treated with stem cells and HF-LPLI, and regeneration was detected by hematoxylin and eosin staining and in vivo imaging. It was observed that HF-LPLI promoted inflammation resolution by reducing the excessive inflammatory response, and finally stimulated stem cell proliferation and differentiation. Furthermore, in vivo results revealed that stem cells treated with HF-LPLI induced bone regeneration. HF-LPLI stimulated stem cell proliferation and differentiation by promoting inflammation resolution subsequent to stem cell activation, providing a new strategy for the clinical treatment of periodontitis.
Collapse
Affiliation(s)
- Tiejun Hou
- Department of Stomatology, Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Shanyong Li
- Department of Stomatology, Liaocheng Third People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Guangwei Zhang
- Department of Stomatology, Liaocheng Third People's Hospital, Liaocheng, Shandong 252000, P.R. China
| | - Yan Li
- Department of Stomatology, Liaocheng People's Hospital, Liaocheng, Shandong 252000, P.R. China
| |
Collapse
|
7
|
He Y, Gan X, Zhang L, Liu B, Zhu Z, Li T, Zhu J, Chen J, Yu H. CoCl 2 induces apoptosis via a ROS-dependent pathway and Drp1-mediated mitochondria fission in periodontal ligament stem cells. Am J Physiol Cell Physiol 2018; 315:C389-C397. [PMID: 29768044 DOI: 10.1152/ajpcell.00248.2017] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Oxygen deficiency is associated with various oral diseases, including chronic periodontitis, age-related alveolar bone loss, and mechanical stress-linked cell injury from orthodontic appliances. Nevertheless, our understanding of the impact of hypoxia on periodontal tissues and its biochemical mechanism is still rudimentary. The purpose of this research was to elucidate the effects of hypoxia on the apoptosis of human periodontal ligament stem cells (PDLSCs) in vitro and the underlying mechanism. Herein, we showed that cobalt chloride (CoCl2) triggered cell dysfunction in human PDLSCs in a concentration-dependent manner and resulted in cell apoptosis and oxidative stress overproduction and accumulation in PDLSCs. In addition, CoCl2 promoted mitochondrial fission in PDLSCs. Importantly, CoCl2 increased the expression of dynamin-related protein 1 (Drp1), the major regulator in mitochondrial fission, in PDLSCs. Mitochondrial division inhibitor-1, pharmacological inhibition of Drp1, not only inhibited mitochondrial fission but also protected against CoCl2-induced PDLSC dysfunction, as shown by increased mitochondrial membrane potential, increased ATP level, reduced reactive oxygen species (ROS) level, and decreased apoptosis. Furthermore, N-acety-l-cysteine, a pharmacological inhibitor of ROS, also abolished CoCl2-induced expression of Drp1 and protected against CoCl2-induced PDLSC dysfunction, as shown by restored mitochondrial membrane potential, ATP level, inhibited mitochondrial fission, and decreased apoptosis. Collectively, our data provide new insights into the role of the ROS-Drp1-dependent mitochondrial pathway in CoCl2-induced apoptosis in PDLSCs, indicating that ROS and Drp1 are promising therapeutic targets for the treatment of CoCl2-induced PDLSC dysfunction.
Collapse
Affiliation(s)
- Yuting He
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu , People's Republic of China.,West China-Washington Mitochondria and Metabolism Center, Department of Anesthesiology, West China Hospital, Sichuan University , Chengdu , People's Republic of China
| | - Xueqi Gan
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu , People's Republic of China
| | - Ling Zhang
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu , People's Republic of China
| | - Beilei Liu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu , People's Republic of China
| | - Zhuoli Zhu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu , People's Republic of China
| | - Tao Li
- West China-Washington Mitochondria and Metabolism Center, Department of Anesthesiology, West China Hospital, Sichuan University , Chengdu , People's Republic of China
| | - Junfei Zhu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu , People's Republic of China
| | - Junsheng Chen
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu , People's Republic of China
| | - Haiyang Yu
- State Key Laboratory of Oral Disease, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University , Chengdu , People's Republic of China
| |
Collapse
|
8
|
da Rosa WLO, Piva E, da Silva AF. Disclosing the physiology of pulp tissue for vital pulp therapy. Int Endod J 2018; 51:829-846. [DOI: 10.1111/iej.12906] [Citation(s) in RCA: 65] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2017] [Accepted: 01/30/2018] [Indexed: 12/23/2022]
Affiliation(s)
- W. L. O. da Rosa
- Department of Restorative Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas Brazil
| | - E. Piva
- Department of Restorative Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas Brazil
| | - A. F. da Silva
- Department of Restorative Dentistry; School of Dentistry; Federal University of Pelotas; Pelotas Brazil
| |
Collapse
|
9
|
Zhu Q, Gao J, Tian G, Tang Z, Tan Y. Adrenomedullin promotes the odontogenic differentiation of dental pulp stem cells through CREB/BMP2 signaling pathway. Acta Biochim Biophys Sin (Shanghai) 2017; 49:609-616. [PMID: 28541393 DOI: 10.1093/abbs/gmx053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2017] [Indexed: 01/25/2023] Open
Abstract
Adrenomedullin (AM) could promote the proliferation, the odontogenic differentiation and inhibit the apoptosis of dental pulp stem cells (DPSCs). AM in combination with DPSCs may be an effective strategy for pulp repair. However, there was no report on the mechanisms of AM in the odontogenic differentiation of DPSCs. The aim of this study is to investigate the molecular mechanisms through which AM promotes the odontogenic differentiation of DPSCs. Freshly extracted wisdom teeth were obtained from 27 patients. Cells at passage 3 to passage 5 were used in this study. DPSCs were treated with or without 10-7 M AM in Dulbecco's modified Eagle's medium culture, and then the accumulated calcium deposition was analyzed after 21 days by using alizarin red S staining. Odontogenic differentiation markers were determined by western blot analysis and quantitative real-time PCR. Western blot analysis results showed that AM had the capability of promoting the odontogenic differentiation of DPSCs and AM could enhance the phosphorylation of CREB and up-regulate the expression of BMP2. H89 is a CREB inhibitor which can inhibit the odontogenic differentiation of DPSCs through inhibiting the phosphorylation of CREB. Noggin could inhibit the odontogenic differentiation of DPSCs through inhibiting the activity of BMP2. These results indicated that AM could promote the odontogenic differentiation of DPSCs by upregulating the expression of BMP2 through the CREB signaling pathway.
Collapse
Affiliation(s)
- Qiang Zhu
- Department of Stomatology, Changhai Hospital, the Second Military Medical University, Shanghai 200433, China
| | - Jianyong Gao
- Department of Stomatology, Changhai Hospital, the Second Military Medical University, Shanghai 200433, China
| | - Gang Tian
- Department of Stomatology, Changhai Hospital, the Second Military Medical University, Shanghai 200433, China
| | - Zhen Tang
- Department of Stomatology, Changhai Hospital, the Second Military Medical University, Shanghai 200433, China
| | - Yinghui Tan
- Department of Stomatology, Xinqiao Hospital, the Third Military Medical University, Chongqing 400037, China
| |
Collapse
|