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Han J, Zhang X, Cai M, Tian F, Xu Y, Chen H, He W, Zhang J, Tian H. TSPO deficiency exacerbates acute lung injury via NLRP3 inflammasome-mediated pyroptosis. Chin Med J (Engl) 2024; 137:1592-1602. [PMID: 38644799 PMCID: PMC11230828 DOI: 10.1097/cm9.0000000000003105] [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: 10/19/2023] [Indexed: 04/23/2024] Open
Abstract
BACKGROUND Acute respiratory distress syndrome (ARDS) is a common cause of respiratory failure in many critically ill patients. Although inflammasome activation plays an important role in the induction of acute lung injury (ALI) and ARDS, the regulatory mechanism of this process is still unclear. When cells are stimulated by inflammation, the integrity and physiological function of mitochondria play a crucial part in pyroptosis. However, the underlying mechanisms and function of mitochondrial proteins in the process of pyroptosis are largely not yet known. Here, we identified the 18-kDa translocator protein (TSPO), a mitochondrial outer membrane protein, as an important mediator regulating nucleotide-binding domain, leucine-rich repeat, and pyrin domain-containing protein 3 (NLRP3) inflammasome activation in macrophages during ALI. METHODS TSPO gene knockout (KO) and lipopolysaccharide (LPS)-induced ALI/ARDS mouse models were employed to investigate the biological role of TSPO in the pathogenesis of ARDS. Murine macrophages were used to further characterize the effect of TSPO on the NLRP3 inflammasome pathway. Activation of NLRP3 inflammasome was preformed through LPS + adenosine triphosphate (ATP) co-stimulation, followed by detection of mitochondrial membrane potential, reactive oxygen species (ROS) production, and cell death to evaluate the potential biological function of TSPO. Comparisons between two groups were performed with a two-sided unpaired t -test. RESULTS TSPO- KO mice exhibited more severe pulmonary inflammation in response to LPS-induced ALI. TSPO deficiency resulted in enhanced activation of the NLRP3 inflammasome pathway, promoting more proinflammatory cytokine production of macrophages in LPS-injured lung tissue, including interleukin (IL)-1β, IL-18, and macrophage inflammatory protein (MIP)-2. Mitochondria in TSPO -KO macrophages tended to depolarize in response to cellular stress. The increased production of mitochondrial damage-associated molecular pattern led to enhanced mitochondrial membrane depolarization and pyroptosis in TSPO -KO cells. CONCLUSION TSPO may be the key regulator of cellular pyroptosis, and it plays a vital protective role in ARDS occurrence and development.
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Affiliation(s)
- Jingyi Han
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
| | - Xue Zhang
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
| | - Menghua Cai
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
- Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, Jiangsu 213000, China
| | - Feng Tian
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
| | - Yi Xu
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
- Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, Jiangsu 213000, China
| | - Hui Chen
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
- Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, Jiangsu 213000, China
- Haihe Laboratory of Cell Ecosystem, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Wei He
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
- Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, Jiangsu 213000, China
| | - Jianmin Zhang
- CAMS Key Laboratory of T Cell and Immunotherapy, Department of Immunology, Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and School of Basic Medicine, Peking Union Medical College, State Key Laboratory of Medical Molecular Biology, Beijing 100005, China
- Changzhou Xitaihu Institute for Frontier Technology of Cell Therapy, Changzhou, Jiangsu 213000, China
- Haihe Laboratory of Cell Ecosystem, Chinese Academy of Medical Sciences & Peking Union Medical College, Tianjin 300020, China
| | - Hui Tian
- Department of Thoracic Surgery, Qilu Hospital of Shandong University, Jinan, Shandong 250012, China
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Monteiro Viana JC, da Silva Gomes GE, Duarte Oliveira FJ, Marques de Araújo LN, Teles G, Mourão CF, de Vasconcelos Gurgel BC. The Role of Different Types of Cannabinoids in Periodontal Disease: An Integrative Review. Pharmaceutics 2024; 16:893. [PMID: 39065590 PMCID: PMC11279938 DOI: 10.3390/pharmaceutics16070893] [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: 05/10/2024] [Revised: 06/22/2024] [Accepted: 07/02/2024] [Indexed: 07/28/2024] Open
Abstract
This integrative review addresses the potential of the Endocannabinoid System (ES) and cannabinoids in the pathogenesis and treatment of periodontal disease (PD). Cannabinoid receptors are expressed in healthy and inflamed periodontal tissues, indicating a potential regulatory role for SEC in oral homeostasis. Healthy periodontal cells express more CB1 receptors, while inflamed sites show increased CB2 receptors. This suggests a dynamic involvement of the SEC in the inflammatory response associated with PD. Cannabinoids such as cannabidiol (CBD) and cannabinoid receptor agonists such as HU-308, anandamide (AEA), and methanamide (Meta-AEA) have demonstrated promising therapeutic potential in studies. CBD has been associated with the control of bone resorption, antibacterial activity, and increased production of gingival fibroblasts, indicating effects in mitigating the progression of PD. HU-308 demonstrated preventive effects against alveolar bone loss, and anti-inflammatory, osteoprotective, and pro-homeostatic properties in animal models of periodontitis. AEA and Meta-AEA have anti-inflammatory effects by reducing pro-inflammatory mediators such as IL-1, IL-6, and TNF-α. The activation of cannabinoid receptors attenuates inflammatory processes, inhibits alveolar bone loss, exerts antibacterial effects, and promotes tissue repair. However, clinical trials are especially needed to validate these results and explore the therapeutic potential of cannabinoids in the treatment of PD in humans.
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Affiliation(s)
| | | | | | | | | | - Carlos Fernando Mourão
- Department of Periodontology, Tufts University School of Dental Medicine, Boston, MA 02111, USA
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Wang W, Yang H, Fan Z, Shi R. STL Inhibited Angiogenesis of DPSCs Through Depressing Mitochondrial Respiration by Enhancing RNF217. Adv Biol (Weinh) 2024:e2400042. [PMID: 38880848 DOI: 10.1002/adbi.202400042] [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: 01/22/2024] [Revised: 05/10/2024] [Indexed: 06/18/2024]
Abstract
Angiogenesis is the determining factor during dental pulp regeneration. Six-twelve leukemia (STL) is identified as a key regulatory factor on the biological function of dental pulp stem cells (DPSCs) under hypoxic conditions, but its effect on angiogenesis is unclear. Co-culture of DPSCs and human umbilical vein endothelial cells (HUVECs) is used to detect tubule formation ability in vitro and the angiogenesis ability in vivo. RNA-seq and bioinformatic analyses are performed to screen differentially expressed genes. Seahorse Cell Mito Stress Test is proceeded to exam mitochondrial respiration. STL decreased tubule formation and mitochondrial respiration of DPSCs in vitro and restrained the number of blood vessels and the expression of VEGF in new formed tissue in vivo. Furthermore, pretreating STL-depleted DPSCs with rotenone, a mitochondrial respiration inhibitor, counteracted the promoting effect of STL knockdown on tubule formation. Then, RNA-seq and bioinformatic analyses identified some angiogenesis relevant genes and pathways in STL-depleted DPSCs. And STL enhanced expression of mRNA-ring finger protein 217 (RNF217), which inhibited the tubule formation and mitochondrial respiration of DPSCs. STL inhibited the angiogenesis of DPSCs through depressing mitochondrial respiration by enhancing RNF217, indicating that STL is a potential target for angiogenesis of DPSCs.
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Affiliation(s)
- Wanqing Wang
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Haoqing Yang
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, 100050, China
| | - Zhipeng Fan
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, 100050, China
- Beijing Laboratory of Oral Health, Capital Medical University, Beijing, 100069, China
- Research Unit of Tooth Development and Regeneration, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Ruitang Shi
- Department of Endodontics, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, 100050, China
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Bai Y, Zhang W, Hao L, Zhao Y, Tsai IC, Qi Y, Xu Q. Acetyl-CoA-dependent ac 4C acetylation promotes the osteogenic differentiation of LPS-stimulated BMSCs. Int Immunopharmacol 2024; 133:112124. [PMID: 38663312 DOI: 10.1016/j.intimp.2024.112124] [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: 01/31/2024] [Revised: 04/10/2024] [Accepted: 04/17/2024] [Indexed: 05/12/2024]
Abstract
The impaired osteogenic capability of bone marrow mesenchymal stem cells (BMSCs) caused by persistent inflammation is the main pathogenesis of inflammatory bone diseases. Recent studies show that metabolism is disturbed in osteogenically differentiated BMSCs in response to Lipopolysaccharide (LPS) treatment, while the mechanism involved remains incompletely revealed. Herein, we demonstrated that BMSCs adapted their metabolism to regulate acetyl-coenzyme A (acetyl-CoA) availability and RNA acetylation level, ultimately affecting osteogenic differentiation. The mitochondrial dysfunction and impaired osteogenic potential upon inflammatory conditions accompanied by the reduced acetyl-CoA content, which in turn suppressed N4-acetylation (ac4C) level. Supplying acetyl-CoA by sodium citrate (SC) addition rescued ac4C level and promoted the osteogenic capacity of LPS-treated cells through the ATP citrate lyase (ACLY) pathway. N-acetyltransferase 10 (NAT10) inhibitor remodelin reduced ac4C level and consequently impeded osteogenic capacity. Meanwhile, the osteo-promotive effect of acetyl-CoA-dependent ac4C might be attributed to fatty acid oxidation (FAO), as evidenced by activating FAO by L-carnitine supplementation counteracted remodelin-induced inhibition of osteogenesis. Further in vivo experiments confirmed the promotive role of acetyl-CoA in the endogenous bone regeneration in rat inflammatory mandibular defects. Our study uncovered a metabolic-epigenetic axis comprising acetyl-CoA and ac4C modification in the process of inflammatory osteogenesis of BMSCs and suggested a new target for bone tissue repair in the context of inflammatory bone diseases.
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Affiliation(s)
- Yujia Bai
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China.
| | - Wenjie Zhang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China.
| | - Lili Hao
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China.
| | - Yiqing Zhao
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China.
| | - I-Chen Tsai
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China.
| | - Yipin Qi
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China.
| | - Qiong Xu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Guangzhou, Guangdong 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, Guangdong 510055, China.
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Carmona Rendón Y, Garzón HS, Bueno-Silva B, Arce RM, Suárez LJ. Cannabinoids in Periodontology: Where Are We Now? Antibiotics (Basel) 2023; 12:1687. [PMID: 38136721 PMCID: PMC10740419 DOI: 10.3390/antibiotics12121687] [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: 10/31/2023] [Revised: 11/25/2023] [Accepted: 11/29/2023] [Indexed: 12/24/2023] Open
Abstract
INTRODUCTION Cannabinoids are a well-documented treatment modality for various immune and inflammatory diseases, including asthma, chronic obstructive pulmonary disease, Crohn's disease, arthritis, multiple sclerosis, and a range of neurodegenerative conditions. However, limited information is available regarding the therapeutic potential of cannabinoids in treating periodontal disease. OBJECTIVE The objective of this study is to analyze the current evidence on the antibacterial and immunomodulatory effects of cannabis and its role in the healing and regeneration processes within periodontal tissues. RESULTS This review discusses the potential role of cannabinoids in restoring periodontal tissue homeostasis. CONCLUSIONS The examination of the endocannabinoid system and the physiological effects of cannabinoids in the periodontium suggests that they possess immunomodulatory and antibacterial properties, which could potentially promote proper tissue healing and regeneration.
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Affiliation(s)
- Yésica Carmona Rendón
- Departamento de Ciencias Básicas y Medicina Oral, Facultad de Odontología, Universidad Nacional de Colombia, Bogotá 111321, Colombia;
| | - Hernán Santiago Garzón
- Programa de Doctorado en Ingeniería, Facultad de Ingeniería, Pontificia Universidad Javeriana, Bogotá 110231, Colombia;
| | - Bruno Bueno-Silva
- Departamento de Biociências, Faculdade de Odontologia de Piracicaba, Universidade de Campinas (UNICAMP), Piracicaba 13414-903, Brazil;
| | - Roger M. Arce
- Department of Periodontics and Oral Hygiene, University of Texas School of Dentistry at Houston, Houston, TX 77054, USA;
| | - Lina Janeth Suárez
- Departamento de Ciencias Básicas y Medicina Oral, Facultad de Odontología, Universidad Nacional de Colombia, Bogotá 111321, Colombia;
- Centro de Investigaciones Odontológicas, Facultad de Odontología, Pontificia Universidad Javeriana, Bogotá 110231, Colombia
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Li M, Shi X, Wu Y, Qi B, Zhang C, Wang B, Zhang B, Xu Y. Pmepa1 knockdown alleviates SpA-induced pyroptosis and osteogenic differentiation inhibition of hBMSCs via p38MAPK/NLRP3 axis. Int Immunopharmacol 2023; 124:110843. [PMID: 37634444 DOI: 10.1016/j.intimp.2023.110843] [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: 04/07/2023] [Revised: 08/12/2023] [Accepted: 08/20/2023] [Indexed: 08/29/2023]
Abstract
BACKGROUND Osteomyelitis is a refractory bone infectious disease, which usually results in progressive bone destruction and bone loss. The invasion of pathogens and subsequent inflammatory response could damage bone marrow mesenchymal stem cells (BMSCs) and inhibit osteogenic differentiation, and finally aggravate uncontrolled bone remodeling in osteomyelitis by affecting bone formation. Exploring the mechanisms of BMSCs injury and osteogenic differentiation inhibition may would help us to find potential therapeutic targets. METHOD Firstly, staphylococcal protein A (SpA)-treated human bone marrow mesenchymal stem cells (hBMSCs) were used to construct cell models of osteomyelitis. Secondly, transcriptome sequencing was performed to screen differentially expressed genes and then verified the expression of target genes. Next, in vitro experiments were conducted to explore the functions and mechanisms of prostate transmembrane protein androgen induced 1 (Pmepa1) in SpA-treated hBMSCs. Finally, the rat model of osteomyelitis was established to provide an auxiliary validation of the in vitro experimental results. RESULTS We found that SpA treatment induced inflammatory injury and inhibited osteogenic differentiation in hBMSCs, then the transcriptome sequencing and further detection results showed that Pmepa1 was significantly upregulated in this process. Functionally, Pmepa1 knockdown alleviated inflammatory injury and promoted osteogenic differentiation in SpA-treated hBMSCs. Among them, it was demonstrated that Pmepa1 knockdown exerted cytoprotective effects by alleviating pyroptosis of SpA-infected hBMSCs. Furthermore, recovery experiments revealed that Pmepa1 knockdown reversed SpA-mediated adverse effects by downregulating the p38MAPK/NLRP3 axis. Finally, the detection results of rat femoral osteomyelitis showed that the expression of Pmepa1 was up-regulated, and the expression trends of other indicators including p38MAPK, NLRP3, and caspase-1 were also consistent with the in vitro model. CONCLUSION Pmepa1 knockdown alleviates SpA-induced pyroptosis and inhibition of osteogenic differentiation in hBMSCs by downregulating p38MAPK/NLRP3 signaling axis. Modulating the expression of Pmepa1 may be a potential strategy to ameliorate osteomyelitis.
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Affiliation(s)
- Mingjun Li
- Kunming Medical University, Kunming, Yunnan 650500, China
| | - Xiangwen Shi
- Kunming Medical University, Kunming, Yunnan 650500, China
| | - Yipeng Wu
- Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force, Kunming, China
| | - Baochuang Qi
- Kunming Medical University, Kunming, Yunnan 650500, China
| | - Chaoqun Zhang
- Kunming Medical University, Kunming, Yunnan 650500, China
| | - Bin Wang
- Kunming Medical University, Kunming, Yunnan 650500, China
| | - Bihuan Zhang
- Kunming Medical University, Kunming, Yunnan 650500, China
| | - Yongqing Xu
- Department of Orthopedic Surgery, 920th Hospital of Joint Logistics Support Force, Kunming, China.
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Zhang C, Ye W, Zhao M, Long L, Xia D, Fan Z. KDM6B Negatively Regulates the Neurogenesis Potential of Apical Papilla Stem Cells via HES1. Int J Mol Sci 2023; 24:10608. [PMID: 37445785 PMCID: PMC10341966 DOI: 10.3390/ijms241310608] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2023] [Revised: 06/19/2023] [Accepted: 06/21/2023] [Indexed: 07/15/2023] Open
Abstract
Stem cells from the apical papilla (SCAPs) are used to regulate the microenvironment of nerve defects. KDM6B, which functions as an H3K27me3 demethylase, is known to play a crucial role in neurogenesis. However, the mechanism by which KDM6B influences the neurogenesis potential of SCAPs remains unclear. We evaluated the expression of neural markers in SCAPs by using real-time RT-PCR and immunofluorescence staining. To assess the effectiveness of SCAP transplantation in the SCI model, we used the BBB scale to evaluate motor function. Additionally, toluidine blue staining and Immunofluorescence staining of NCAM, NEFM, β-III-tubulin, and Nestin were used to assess nerve tissue remodeling. Further analysis was conducted through Microarray analysis and ChIP assay to study the molecular mechanisms. Our results show that KDM6B inhibits the expression of NeuroD, TH, β-III tubulin, and Nestin. In vivo studies indicate that the SCAP-KDM6Bsh group is highly effective in restoring spinal cord structure and motor function in rats suffering from SCI. Our findings suggest that KDM6B directly binds to the HES1 promoter via regulating H3K27me3 and HES1 expression. In conclusion, our study can help understand the regulatory role of KDM6B in neurogenesis and provide more effective treatments for nerve injury.
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Affiliation(s)
- Chen Zhang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China; (C.Z.); (W.Y.); (M.Z.); (L.L.)
- Department of Dental Emergency, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China;
| | - Weilong Ye
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China; (C.Z.); (W.Y.); (M.Z.); (L.L.)
| | - Mengyao Zhao
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China; (C.Z.); (W.Y.); (M.Z.); (L.L.)
| | - Lujue Long
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China; (C.Z.); (W.Y.); (M.Z.); (L.L.)
| | - Dengsheng Xia
- Department of Dental Emergency, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China;
| | - Zhipeng Fan
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing 100050, China; (C.Z.); (W.Y.); (M.Z.); (L.L.)
- Beijing Laboratory of Oral Health, Capital Medical University, Beijing 100069, China
- Research Unit of Tooth Development and Regeneration, Chinese Academy of Medical Sciences, Beijing 100069, China
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Pellegrini G, Carmagnola D, Toma M, Rasperini G, Orioli M, Dellavia C. Involvement of the endocannabinoid system in current and recurrent periodontitis: A human study. J Periodontal Res 2023; 58:422-432. [PMID: 36727611 DOI: 10.1111/jre.13103] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 11/30/2022] [Accepted: 01/17/2023] [Indexed: 02/03/2023]
Abstract
OBJECTIVE The aim of the present study was to assess if the endocannabinoid system is involved differently in patients with recurrent and non-recurrent periodontal disease and if in sites that have a predisposition for reactivation, levels of anandamide (AEA) change after periodontal therapy. BACKGROUND Periodontal disease (PD) may be due to a dysregulation of the endocannabinoid system. METHODS Periodontal patients were recruited, treated for PD and monitored. Gingival samples from these patients with recurrent (n = 10) and non-recurrent (n = 10) periodontal disease were harvested before and after treatment and compared to those of periodontally healthy (n = 10) subjects. Levels of CB1 and CB2, AEA and CBs receptor activation were assessed in healthy and inflamed samples using immunohistochemistry, chromatography and autoradiography. In healed sites, AEA levels were also assessed. RESULTS The number of CBs in inflamed sites of recurrent patients was significantly higher than in those with non-recurrent disease and also higher than those in healthy subjects. Inflamed sites of recurrent patients had significantly lower CBs receptor activation than those of healthy subjects. Levels of AEA in inflamed sites of non-recurrent patients were significantly higher than those found both in inflamed recurrent sites and in healthy sites. Otherwise, the amount of AEA in healthy subjects and recurrent inflamed sites was similar. After periodontal therapy, levels of AEA were significantly lower in both periodontal groups. In recurrent sites, they resulted significantly lower than in non-recurrent and even in healthy subjects. CONCLUSIONS The endocannabinoid system seems involved differently in subjects with recurrent and non-recurrent periodontal disease.
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Affiliation(s)
- Gaia Pellegrini
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
| | - Daniela Carmagnola
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
| | - Marilisa Toma
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
| | - Giulio Rasperini
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
| | - Marica Orioli
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
| | - Claudia Dellavia
- Department of Biomedical, Surgical and Dental Sciences, Università degli Studi di Milano, Milan, Italy
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Regulation of the Host Immune Microenvironment in Periodontitis and Periodontal Bone Remodeling. Int J Mol Sci 2023; 24:ijms24043158. [PMID: 36834569 PMCID: PMC9967675 DOI: 10.3390/ijms24043158] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2023] [Revised: 01/27/2023] [Accepted: 02/03/2023] [Indexed: 02/08/2023] Open
Abstract
The periodontal immune microenvironment is a delicate regulatory system that involves a variety of host immune cells including neutrophils, macrophages, T cells, dendritic cells and mesenchymal stem cells. The dysfunction or overactivation of any kind of local cells, and eventually the imbalance of the entire molecular regulatory network, leads to periodontal inflammation and tissue destruction. In this review, the basic characteristics of various host cells in the periodontal immune microenvironment and the regulatory network mechanism of host cells involved in the pathogenesis of periodontitis and periodontal bone remodeling are summarized, with emphasis on the immune regulatory network that regulates the periodontal microenvironment and maintains a dynamic balance. Future strategies for the clinical treatment of periodontitis and periodontal tissue regeneration need to develop new targeted synergistic drugs and/or novel technologies to clarify the regulatory mechanism of the local microenvironment. This review aims to provide clues and a theoretical basis for future research in this field.
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Zinc Protoporphyrin-9 Potentiates the Anticancer Activity of Dihydroartemisinin. Antioxidants (Basel) 2023; 12:antiox12020250. [PMID: 36829809 PMCID: PMC9952556 DOI: 10.3390/antiox12020250] [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: 12/16/2022] [Revised: 01/15/2023] [Accepted: 01/19/2023] [Indexed: 01/26/2023] Open
Abstract
Besides the clinically proven superior antimalarial activity, artemisinins (ARTs) are also associated with anticancer properties, albeit at much lower potency. Iron and heme have been proposed as possible activators of ARTs against cancer cells. Here we show that zinc protoporphyrin-9 (ZnPPIX), a heme homolog and a natural metabolite for heme synthesis during iron insufficiency, greatly enhanced the anticancer activity of dihydroartemisinin (DHA) in multiple cell lines. Using melanoma B16 and breast cancer 4T1 cells, we demonstrated ZnPPIX dramatically elevated intracellular free heme levels, accompanied by heightened reactive oxidative species (ROS) production. The tumor-suppression activity of ZnPPIX and DHA is mitigated by antioxidant vitamin E or membrane oxidation protectant ferrostatin. In vivo xenograft animal models confirmed that ZnPPIX significantly potentiated the tumor-inhibition capability of DHA while posing no apparent toxicity to the mice. The proliferating index and growth of tumors after the combinatory treatment of DHA and ZnPPIX were evidently reduced. Considering the clinical safety profiles of both DHA and ZnPPIX, their action synergy offers a promising strategy to improve the application of ARTs in our fight against cancer.
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Ma F, Luo S, Lu C, Jiang X, Chen K, Deng J, Ma S, Li Z. The role of Nrf2 in periodontal disease by regulating lipid peroxidation, inflammation and apoptosis. Front Endocrinol (Lausanne) 2022; 13:963451. [PMID: 36482997 PMCID: PMC9723463 DOI: 10.3389/fendo.2022.963451] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/13/2022] [Accepted: 11/02/2022] [Indexed: 11/23/2022] Open
Abstract
Nuclear factor E2-related factor 2(Nrf2) is a transcription factor that mainly regulates oxidative stress in the body. It initiates the expression of several downstream antioxidants, anti-inflammatory proteins and detoxification enzymes through the Kelch-like ECH-associating protein 1 (Keap1) -nuclear factor E2-related factor 2(Nrf2) -antioxidant response element (ARE) signaling pathway. Its anti-apoptosis, anti-oxidative stress and anti-inflammatory effects have gradually become the focus of periodontal disease research in recent years. In this paper, the structure and function of Nrf2 pathway and its mechanism of action in the treatment of periodontitis in recent years were analyzed and summarized, so as to further clarify the relationship between Nrf2 pathway and oxidative stress in the occurrence and development of periodontitis, and to provide ideas for the development of new treatment drugs targeting Nrf2 pathway.
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Affiliation(s)
- Fengyu Ma
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- School of Stomatology, Jinan University, Guangzhou, Guangdong, China
| | - Shangdie Luo
- Department of Orthodontics, Huizhou Stomatological Hospital, Huizhou, Guangdong, China
| | - Chunting Lu
- Science and Education Office, The First Affiliated Hospital, Jinan University, Guangzhou, Guangdong, China
| | - Xinrong Jiang
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- School of Stomatology, Jinan University, Guangzhou, Guangdong, China
| | - Kexiao Chen
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- School of Stomatology, Jinan University, Guangzhou, Guangdong, China
| | - Jianwen Deng
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- School of Stomatology, Jinan University, Guangzhou, Guangdong, China
| | - Shuyuan Ma
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
| | - Zejian Li
- Department of Stomatology, The First Affiliated Hospital of Jinan University, Guangzhou, Guangdong, China
- School of Stomatology, Jinan University, Guangzhou, Guangdong, China
- Chaoshan Hospital, The First Affiliated Hospital of Jinan University, Chaozhou, Guangdong, China
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