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Di T, Chen Y, Zhou Z, Liu J, Du Y, Feng C, Zhu B, Wang L. Effect of α7 nAChR-autophagy axis of deciduous tooth pulp stem cells in regulating IL-1β in the process of physiological root resorption of deciduous teeth. J Mol Med (Berl) 2024:10.1007/s00109-024-02466-0. [PMID: 39002004 DOI: 10.1007/s00109-024-02466-0] [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: 12/31/2023] [Revised: 05/27/2024] [Accepted: 06/24/2024] [Indexed: 07/15/2024]
Abstract
Physiological root resorption of deciduous teeth is a normal phenomenon occurring during the developmental stages of children. Previous research has indicated the pivotal role of the inflammatory microenvironment in this process, although the specific mechanisms remain unclear. This study is aimed at elucidating the involvement of the alpha7 nicotinic acetylcholine receptors (α7 nAChR)-autophagy axis in the regulation of the inflammatory microenvironment during physiological root resorption in deciduous teeth. Samples were collected from deciduous teeth at various stages of physiological root resorption, and deciduous dental pulp stem cells (DDPSCs) were isolated and cultured during the mid-phase of root resorption. The findings revealed a substantial infiltration of the pulp of deciduous teeth at the mid-phase of root resorption, characterized by elevated expression levels of α7 nAChR and IL-1β. Significantly increased IL-1β and α7 nAChR expressions were observed in DDPSCs during the mid-phase of root resorption, with α7 nAChR demonstrating a regulatory effect on IL-1β. Moreover, evidence suggested that mechanical stress may act as a trigger, regulating autophagy and IL-1 expression via α7 nAChR. In conclusion, mechanical stress was identified as a regulator of autophagy in DDPSCs through α7 nAChR, influencing the expression of IL-1β and contributing to the formation of the inflammatory microenvironment. This mechanism plays a crucial role in the physiological root resorption of deciduous teeth. KEY MESSAGES: The pulp of deciduous teeth at mid-phase of root resorption was heavily infiltrated with high expression of α7nAChR and IL-1β. α7 nAChR acts as an initiating factor to regulate IL-1β through autophagy in DDPSCs. Mechanical stress can regulate autophagy of DDPSCs through α7 nAChR and thus affect IL-1β expression and inflammatory microenvironment formation in physiological root resorption in deciduous teeth.
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Affiliation(s)
- Tiankai Di
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
- Department of Stomatology, The 969th Hospital, Joint Logistics Support Force of the Chinese People's Liberation Army, Hohhot, Inner Mongolia, 010000, People's Republic of China
| | - Yujiang Chen
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
- Department of Neurobiology and Institute of Neurosciences, School of Basic Medicine, Fourth Military Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
| | - Zhifei Zhou
- Department of Stomatology, General Hospital of Tibet Military Region, Lhasa, 850007, People's Republic of China
| | - Jiajia Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
| | - Yang Du
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, People's Republic of China
| | - Chao Feng
- Department of Stomatology, The 969th Hospital, Joint Logistics Support Force of the Chinese People's Liberation Army, Hohhot, Inner Mongolia, 010000, People's Republic of China
- Center for Computational Biology, Institute of Military Cognition and Brain Sciences, Academy of Military Medical Sciences, Beijing, 100850, People's Republic of China
| | - Bin Zhu
- Department of Stomatology, General Hospital of Tibet Military Region, Lhasa, 850007, People's Republic of China.
| | - Lulu Wang
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, National Clinical Research Center for Oral Diseases, Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, People's Republic of China.
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Li J, Zhang Z, Tang J, Hou Z, Li L, Li B. Emerging roles of nerve-bone axis in modulating skeletal system. Med Res Rev 2024; 44:1867-1903. [PMID: 38421080 DOI: 10.1002/med.22031] [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: 12/04/2023] [Revised: 01/25/2024] [Accepted: 02/16/2024] [Indexed: 03/02/2024]
Abstract
Over the past decades, emerging evidence in the literature has demonstrated that the innervation of bone is a crucial modulator for skeletal physiology and pathophysiology. The nerve-bone axis sparked extensive preclinical and clinical investigations aimed at elucidating the contribution of nerve-bone crosstalks to skeleton metabolism, homeostasis, and injury repair through the perspective of skeletal neurobiology. To date, peripheral nerves have been widely reported to mediate bone growth and development and fracture healing via the secretion of neurotransmitters, neuropeptides, axon guidance factors, and neurotrophins. Relevant studies have further identified several critical neural pathways that stimulate profound alterations in bone cell biology, revealing a complex interplay between the skeleton and nerve systems. In addition, inspired by nerve-bone crosstalk, novel drug delivery systems and bioactive materials have been developed to emulate and facilitate the process of natural bone repair through neuromodulation, eventually boosting osteogenesis for ideal skeletal tissue regeneration. Overall, this work aims to review the novel research findings that contribute to deepening the current understanding of the nerve-bone axis, bringing forth some schemas that can be translated into the clinical scenario to highlight the critical roles of neuromodulation in the skeletal system.
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Affiliation(s)
- Jingya Li
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zhuoyuan Zhang
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jinru Tang
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Zeyu Hou
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Longjiang Li
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Head and Neck Oncology, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Bo Li
- State Key Laboratory of Oral Diseases, National Center for Stomatology, National Clinical Research Center for Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Nosrati S, Gheisari M, Zare S, Dara M, Zolghadri S, Razeghian-Jahromi I. The impact of diabetic glucose concentration on viability and cardiac differentiation of mesenchymal stem cells. Tissue Cell 2024; 88:102361. [PMID: 38502970 DOI: 10.1016/j.tice.2024.102361] [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: 01/30/2024] [Revised: 03/12/2024] [Accepted: 03/12/2024] [Indexed: 03/21/2024]
Abstract
INTRODUCTION Hyperglycemia may be a stumbling block for delivery of regenerative benefits of mesenchymal stem cells (MSCs) to diabetic patients with cardiovascular diseases. Our study aims to assess the viability and cardiac differentiation potential of MSCs after being exposed to diabetic glucose concentration. METHODS MSCs were extracted from rat bone marrow. Cells were characterized based on morphology, differentiation potential, and expression of mesenchymal specific markers. MTT assay was done to evaluate the viability of MSCs after treatment with different glucose concentrations. Case group was MSCs treated with diabetic concentration of glucose versus cells treated with PBS as the control group. Growth curve and population doubling time were calculated in both groups. Expression of GATA4 and troponin, as the early and late markers during cardiac differentiation, were measured following 5-azacytidine exposure. RESULTS Proliferated cells at passage three had fibroblastic-shape, was able to differentiate into adipocytes or osteocytes, and expressed CD73 and CD90. MSCs viability was gradually decreased by increasing glucose concentration. Irrespective of nicotine concentration, three-day exposure imposed more severe detrimental effects on viability compared with one-day treatment. Proliferation rate of the MSCs was lower in the case group, and they need more time for population doubling. Expression of both cardiac markers were downregulated in the case group at day three. However, their expression became higher at day seven. CONCLUSION Diabetic glucose concentration inhibits normal proliferation and cardiac differentiation of MSCs. This effect should be considered in stem cell therapy of cardiovascular patients who are concurrently affected by hyperglycemia, a common comorbidity in such individuals. Why carry out this study? What was learned from the study? FINDINGS
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Affiliation(s)
- Shadi Nosrati
- Department of Biochemistry, Shiraz Branch, Islamic Azad University, Shiraz, Iran
| | - Maryam Gheisari
- Department of Biochemistry, Shiraz Branch, Islamic Azad University, Shiraz, Iran
| | - Shahrokh Zare
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Mahintaj Dara
- Stem Cells Technology Research Center, Shiraz University of Medical Sciences, Shiraz, Iran
| | - Samaneh Zolghadri
- Department of Biology, Jahrom Branch, Islamic Azad University, Jahrom, Iran
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Li M, Liu JX, Ma B, Liu JY, Chen J, Jin F, Hu CH, Xu HK, Zheng CX, Hou R. A Senescence-Associated Secretory Phenotype of Bone Marrow Mesenchymal Stem Cells Inhibits the Viability of Breast Cancer Cells. Stem Cell Rev Rep 2024; 20:1093-1105. [PMID: 38457059 DOI: 10.1007/s12015-024-10710-w] [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] [Accepted: 02/28/2024] [Indexed: 03/09/2024]
Abstract
Breast cancer, the most prevalent malignancy in women, often progresses to bone metastases, especially in older individuals. Dormancy, a critical aspect of bone-metastasized breast cancer cells (BCCs), enables them to evade treatment and recur. This dormant state is regulated by bone marrow mesenchymal stem cells (BMMSCs) through the secretion of various factors, including those associated with senescence. However, the specific mechanisms by which BMMSCs induce dormancy in BCCs remain unclear. To address this gap, a bone-specific senescence-accelerated murine model, SAMP6, was utilized to minimize confounding systemic age-related factors. Confirming senescence-accelerated osteoporosis, distinct BMMSC phenotypes were observed in SAMP6 mice compared to SAMR1 counterparts. Notably, SAMP6-BMMSCs exhibited premature senescence primarily due to telomerase activity loss and activation of the p21 signaling pathway. Furthermore, the effects of conditioned medium (CM) derived from SAMP6-BMMSCs versus SAMR1-BMMSCs on BCC proliferation were examined. Intriguingly, only CM from SAMP6-BMMSCs inhibited BCC proliferation by upregulating p21 expression in both MCF-7 and MDA-MB-231 cells. These findings suggest that the senescence-associated secretory phenotype (SASP) of BMMSCs suppresses BCC viability by inducing p21, a pivotal cell cycle inhibitor and tumor suppressor. This highlights a heightened susceptibility of BCCs to dormancy in a senescent microenvironment, potentially contributing to the increased incidence of breast cancer bone metastasis and recurrence observed with aging.
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Affiliation(s)
- Meng Li
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Prosthodontics, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Jie-Xi Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, 145 West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Bo Ma
- State Key Laboratory of Toxicology and Medical Countermeasures, Laboratory of Toxicant Analysis, Institute of Pharmacology and Toxicology, Academy of Military Medical Sciences, Beijing, 100850, China
| | - Jin-Yu Liu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, 145 West Changle Road, Xi'an, Shaanxi, 710032, China
| | - Ji Chen
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, 145 West Changle Road, Xi'an, Shaanxi, 710032, China
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Oral Implantology, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Fang Jin
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, 145 West Changle Road, Xi'an, Shaanxi, 710032, China
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Orthodontics, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, Xi'an, Shaanxi, 710032, China
| | - Cheng-Hu Hu
- Xi'an Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Medical Research, Northwestern Polytechnical University, Xi'an, Shaanxi, 710072, China
| | - Hao-Kun Xu
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, 145 West Changle Road, Xi'an, Shaanxi, 710032, China.
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, 145 West Changle Road, Xi'an, Shaanxi, China.
| | - Chen-Xi Zheng
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi International Joint Research Center for Oral Diseases, Center for Tissue Engineering, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, 145 West Changle Road, Xi'an, Shaanxi, 710032, China.
| | - Rui Hou
- State Key Laboratory of Oral & Maxillofacial Reconstruction and Regeneration, Shaanxi Clinical Research Center for Oral Diseases, Department of Oral and Maxillofacial Surgery, School of Stomatology, National Clinical Research Center for Oral Diseases, The Fourth Military Medical University, 145 West Changle Road, Xi'an, Shaanxi, China.
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Jiang Y, Yang K, Jia B, Gao Y, Chen Y, Chen P, Lu X, Zhang W, Wang X. Nicotine destructs dental stem cell-based periodontal tissue regeneration. J Dent Sci 2024; 19:231-245. [PMID: 38303843 PMCID: PMC10829564 DOI: 10.1016/j.jds.2023.04.018] [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] [Received: 04/05/2023] [Revised: 04/18/2023] [Indexed: 02/03/2024] Open
Abstract
Background/purpose Nicotine is a widely known addictive and toxic substance in cigarette that exacerbates periodontitis. However, its deleterious effects on dental stem cells and subsequent implications in tissue regeneration remain unclear. This study aimed to explore the effects of nicotine on the regenerative capacity of human periodontal ligament stem cells (hPDLSCs) based on transcriptomics and proteomics, and determined possible targeted genes associated with smoking-related periodontitis. Materials and methods hPDLSCs were treated with different concentrations of nicotine ranging from 10-3 to 10-8 M. Transcriptomics and proteomics were performed and confirmed employing Western blot, 5-ethynyl-2'-deoxyuridine (EdU), and alkaline phosphatase (ALP) staining. A ligature-induced periodontitis mouse model was established and administrated with nicotine (16.2 μg/10 μL) via gingival sulcus. The bone resorption was assessed by micro-computed tomography and histological staining. Key genes were identified using multi-omics analysis with verifications in hPDLSCs and human periodontal tissues. Results Based on enrichments analysis, nicotine-treated hPDLSCs exhibited decreased proliferation and differentiation abilities. Local administration of nicotine in mouse model significantly aggravated bone resorption and undermined periodontal tissue regeneration by inhibiting the endogenous dental stem cells regenerative ability. HMGCS1, GPNMB, and CHRNA7 were hub-genes according to the network analysis and corelated with proliferation and differentiation capabilities, which were also verified in both cells and tissues. Conclusion Our study investigated the destructive effects of nicotine on the regeneration of periodontal tissues from aspects of in vitro and in vivo with the supporting information from both transcriptome and proteome, providing novel targets into the molecular mechanisms of smoking-related periodontitis.
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Affiliation(s)
- Yuran Jiang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Kuan Yang
- School of Stomatology, Qingdao University, Qingdao, Shandong, China
| | - Bo Jia
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Forth Military Medical University, Xi'an, Shaanxi, China
| | - Yuan Gao
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Forth Military Medical University, Xi'an, Shaanxi, China
- School of Biomedical Science, Li Ka-shing School of Medicine, Hong Kong University, Hong Kong, China
| | - Yujiang Chen
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Peng Chen
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Xiaoxi Lu
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Wei Zhang
- State Key Laboratory of Cancer Biology, Biotechnology Center, School of Pharmacy, Forth Military Medical University, Xi'an, Shaanxi, China
| | - Xiaojing Wang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, School of Stomatology, Fourth Military Medical University, Xi'an, Shaanxi, China
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Chen X, Zhang C, Wei T, Chen J, Pan T, Li M, Wang L, Song J, Chen C, Zhang Y, Song Y, Su X. α7nAChR activation in AT2 cells promotes alveolar regeneration through WNT7B signaling in acute lung injury. JCI Insight 2023; 8:e162547. [PMID: 37410546 PMCID: PMC10445688 DOI: 10.1172/jci.insight.162547] [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: 06/09/2022] [Accepted: 06/29/2023] [Indexed: 07/07/2023] Open
Abstract
Reducing inflammatory damage and improving alveolar epithelium regeneration are two key approaches to promoting lung repair in acute lung injury/acute respiratory distress syndrome (ALI/ARDS). Stimulation of cholinergic α7 nicotinic acetylcholine receptor (α7nAChR, coded by Chrna7) signaling could dampen lung inflammatory injury. However, whether activation of α7nAChR in alveolar type II (AT2) cells promotes alveolar epithelial injury repair and underlying mechanisms is elusive. Here, we found that α7nAChR was expressed on AT2 cells and was upregulated in response to LPS-induced ALI. Meanwhile, deletion of Chrna7 in AT2 cells impeded lung repair process and worsened lung inflammation in ALI. Using in vivo AT2 lineage-labeled mice and ex vivo AT2 cell-derived alveolar organoids, we demonstrated that activation of α7nAChR expressed on AT2 cells improved alveolar regeneration by promoting AT2 cells to proliferate and subsequently differentiate toward alveolar type I cells. Then, we screened out the WNT7B signaling pathway by the RNA-Seq analysis of in vivo AT2 lineage-labeled cells and further confirmed its indispensability for α7nAChR activation-mediated alveolar epithelial proliferation and differentiation. Thus, we have identified a potentially unrecognized pathway in which cholinergic α7nAChR signaling determines alveolar regeneration and repair, which might provide us a novel therapeutic target for combating ALI.
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Affiliation(s)
- Xiaoyan Chen
- Shanghai Key Laboratory of Lung Inflammation and Injury, Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Cuiping Zhang
- Shanghai Key Laboratory of Lung Inflammation and Injury, Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Tianchang Wei
- Shanghai Key Laboratory of Lung Inflammation and Injury, Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Jie Chen
- Unit of Respiratory Infection and Immunity, Chinese Academy of Sciences, Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
| | - Ting Pan
- Shanghai Key Laboratory of Lung Inflammation and Injury, Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Miao Li
- Shanghai Key Laboratory of Lung Inflammation and Injury, Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Lu Wang
- Shanghai Key Laboratory of Lung Inflammation and Injury, Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Juan Song
- Shanghai Key Laboratory of Lung Inflammation and Injury, Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Cuicui Chen
- Shanghai Key Laboratory of Lung Inflammation and Injury, Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
| | - Yan Zhang
- Department of Hematology, Shanghai General Hospital, Shanghai Jiaotong University School of Medicine, Shanghai, China
| | - Yuanlin Song
- Shanghai Key Laboratory of Lung Inflammation and Injury, Department of Pulmonary Medicine, Zhongshan Hospital, Fudan University, Shanghai, China
- Shanghai Institute of Infectious Disease and Biosecurity, Shanghai, China
- Shanghai Respiratory Research Institute, Shanghai, China
- National Clinical Research Center for Aging and Medicine, Huashan Hospital, Fudan University, Shanghai, China
- Jinshan Hospital of Fudan University, Shanghai, China
| | - Xiao Su
- Unit of Respiratory Infection and Immunity, Chinese Academy of Sciences, Key Laboratory of Molecular Virology and Immunology, Institut Pasteur of Shanghai, Chinese Academy of Sciences, Shanghai, China
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Zhang T, Yang K, Chen Y, Jiang Y, Zhou Z, Liu J, Du Y, Wang L, Han X, Wu X, Wang X. Impaired autophagy flux by lncRNA NEAT1 is critical for inflammation factors production in human periodontal ligament stem cells with nicotine treatment. J Periodontal Res 2023; 58:70-82. [PMID: 36346119 DOI: 10.1111/jre.13069] [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: 12/06/2021] [Revised: 10/11/2022] [Accepted: 10/18/2022] [Indexed: 11/10/2022]
Abstract
BACKGROUND AND OBJECTIVES Periodontitis is the top reason for tooth loss, and smoking significantly increases severe periodontitis risk. Defective autophagy has been reported to play a vital role in periodontitis. This study aimed to elucidate the relationship between autophagy and inflammation factors production in nicotine-treated periodontal ligament stem cells (PDLSCs) and the underlying mechanism. METHODS In this study, transmission electron microscopy, immunofluorescence, and the mCherry-GFP-LC3 plasmid were used to study autophagy flux. The gene levels of inflammation factors and long noncoding RNA nuclear paraspeckle assembly transcript 1 (lncRNA NEAT1) were detected by quantitative real-time PCR (qRT-PCR). Western blot was performed to assess the protein levels of autophagic markers and α7 nicotinic acetylcholine receptor (α7nAChR). RESULTS We found that nicotine impaired autophagosome-lysosome fusion and lysosome functions to block autophagy flux, contributing to inflammatory factors production in nicotine-treated PDLSCs. Moreover, nicotine upregulated NEAT1 by activating α7nAChR. NEAT1 decreased autophagy flux by downregulating syntaxin 17 (STX17). CONCLUSION Our data indicate that NEAT1-decreased autophagy flux is pivotal for inflammation factors production in nicotine-treated PDLSCs.
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Affiliation(s)
- Taotao Zhang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Kuan Yang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Yujiang Chen
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Yuran Jiang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Zhifei Zhou
- Department of Stomatology, General Hospital of Tibetan Military Command, Lhasa, China
| | - Jiajia Liu
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Yang Du
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Lulu Wang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Xinxin Han
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China
| | - Xingan Wu
- Department of Microbiology, School of Basic Medicine, Fourth Military Medical University, Xi'an, China
| | - Xiaojing Wang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, Fourth Military Medical University, Xi'an, China
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Park SR, Kim SK, Kim SR, Yu WJ, Lee SJ, Lee HY. Effects of smoking on the tissue regeneration-associated functions of human endometrial stem cells via a novel target gene SERPINB2. Stem Cell Res Ther 2022; 13:404. [PMID: 35932085 PMCID: PMC9356492 DOI: 10.1186/s13287-022-03061-1] [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] [Received: 03/23/2022] [Accepted: 07/19/2022] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Smokers directly inhale mainstream cigarette smoke, which contains numerous known and potential toxic substances, and thus, smoking is expected to have broad harmful effects that cause tissue injury and dysfunction. Interestingly, many studies have suggested that the recent decline in female fertility and increased rate of spontaneous abortion could be associated with increased smoking rates. Indeed, women that smoked for 10 years or more were reported to have a ~ 20% higher infertility rate than women that had never smoked. However, the reasons for the underlying harmful aspects of smoking on female fertility remain a matter of debate. Importantly, a previous study revealed that resident endometrial stem cell deficiency significantly limits the cyclic regeneration potential of endometrium, which, in turn, decreases successful pregnancy outcomes. In this context, we postulated that exposure to mainstream cigarette smoke extracts might decrease female fertility by inhibiting the functions of resident endometrial stem cells. METHODS We investigated whether cigarette mainstream smoke exposure directly inhibits various tissue regeneration-associated functions of endometrial stem cells, such as self-renewal, migration, pluripotency, and differentiation capacity in vitro. Next, we determined whether SERPINB2 mediates cigarette smoke-induced suppressive effects on various tissue regeneration-associated functions by depleting SERPINB2 expression with specific shRNA targeting SERPINB2. Mice were injected intraperitoneally with low (0.5 mg/kg) or high (1 mg/kg) doses of cigarette smoke extract (10 times for two weeks), and endometrial stem cells were then isolated from mice uterine tissues. RESULTS We found that exposure to cigarette smoke extracts remarkably suppressed various tissue regeneration-associated functions of endometrial stem cells, such as self-renewal, migration, multilineage differentiation ability, and pluripotency in vitro and in vivo by activating the SERPINB2 gene. Indeed, cigarette smoke-induced inhibitory effects on various endometrial stem cell functions were significantly abolished by SERPINB2 knockdown. CONCLUSIONS These findings provide valuable information on the harmful effects of cigarette smoking on resident endometrial stem cells and hopefully will facilitate the developments of promising therapeutic strategies for subfertile or infertile women that smoke cigarettes.
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Affiliation(s)
- Se-Ra Park
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, 21999, Republic of Korea.,Department of Molecular Medicine, School of Medicine, Gachon University, Incheon, 406-840, Republic of Korea
| | - Seong-Kwan Kim
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, 21999, Republic of Korea.,Department of Molecular Medicine, School of Medicine, Gachon University, Incheon, 406-840, Republic of Korea
| | - Soo-Rim Kim
- Department of Health Sciences and Technology, GAIHST, Gachon University, Incheon, 21999, Republic of Korea.,Department of Molecular Medicine, School of Medicine, Gachon University, Incheon, 406-840, Republic of Korea
| | - Wook-Joon Yu
- Developmental and Reproductivoxicology Research Group, Korea Institute of Toxicology, Deajeon, 34114, Republic of Korea
| | - Seung-Jin Lee
- Developmental and Reproductivoxicology Research Group, Korea Institute of Toxicology, Deajeon, 34114, Republic of Korea
| | - Hwa-Yong Lee
- Division of Science Education, Kangwon National University, Chuncheon, 24341, Republic of Korea.
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9
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Wen X, Liu HX, Chen LZ, Qu W, Yan HY, Hou LF, Zhao WH, Feng YT, Ping J. Asthma susceptibility in prenatal nicotine-exposed mice attributed to β-catenin increase during CD4 + T cell development. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 238:113572. [PMID: 35533447 DOI: 10.1016/j.ecoenv.2022.113572] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/24/2022] [Revised: 04/24/2022] [Accepted: 04/26/2022] [Indexed: 06/14/2023]
Abstract
Cigarette smoke is a common global environmental pollutant. Asthma, the most frequent allergic airway disease, is related to maternal exposure to cigarette smoke. Our previous studies demonstrated that prenatal exposure to nicotine (PNE), the major active product of smoking, impairs fetal thymopoiesis and CD4+ T cell development after birth. This study aimed to investigate whether PNE contributes to asthma susceptibility through CD4+ T cell development alterations. First, A PNE model was established by administering 3 mg/kg/day nicotine to maternal mice, and then an ovalbumin-induced asthma model was established in the offspring. Further, β-catenin and downstream pathways were inhibited in vitro to confirm the molecular mechanisms underlying the phenotype observed during the in vivo phase. The results showed that PNE induced Th2 and Th17 biases at developmental checkpoints and aggravated asthma symptoms in the offspring. In fetuses, PNE up-regulated α7 nAChR, activated PI3K-AKT, promoted β-catenin level increase, and established potential Th2- and Th17-biased gene expression patterns during thymopoiesis, which persisted after birth. Similar results were also observed in 1 μM nicotine-treated thymocytes in vitro. Moreover, inhibiting PI3K-AKT by LY294002 abrogated nicotine-mediated β-catenin level increase and thymopoiesis abnormalities, and an α7 nAChR antagonist (α-btx) also reversed nicotine-induced PI3K-AKT activation. Our findings provide strong evidence that PNE is a risk factor for T cell deviation and postnatal asthma, and revealed that nicotine-induced β-catenin level increase induces thymopoiesis abnormalities.
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Affiliation(s)
- Xiao Wen
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Han-Xiao Liu
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Lan-Zhou Chen
- Hubei Key Laboratory of Biomass-Resources Chemistry and Environmental Biotechnology, Wuhan University School of Resource and Environmental Sciences, Wuhan 430079, China
| | - Wen Qu
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Hui-Yi Yan
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Li-Fang Hou
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Wen-Hao Zhao
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Yi-Ting Feng
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China
| | - Jie Ping
- Department of Pharmacology, Wuhan University School of Basic Medical Sciences, Wuhan 430071, China.
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10
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Du Y, Yang K, Zhou Z, Wu L, Wang L, Chen Y, Ge X, Wang X. Nicotine regulates autophagy of human periodontal ligament cells through α7 nAchR that promotes secretion of inflammatory factors IL-1β and IL-8. BMC Oral Health 2021; 21:560. [PMID: 34732192 PMCID: PMC8565023 DOI: 10.1186/s12903-021-01894-5] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 09/21/2021] [Indexed: 02/06/2023] Open
Abstract
Background Nicotine is an important risk factor and the main toxic component associated with periodontitis. However, the mechanism of nicotine induced periodontitis is not clear. To investigated the mechanism through which nicotine regulates autophagy of human periodontal ligament cells (hPDLCs) through the alpha7 nicotinic acetylcholine receptor (α7 nAChR) and how autophagy further regulates the release of IL-1β and IL-8 secretion in hPDLCs. Methods HPDLCs were obtained from root of extracted teeth and pre-incubated in alpha-bungarotoxin (α-BTX) or 3-Methyladenine (3-MA), followed by culturing in nicotine. We used a variety of experimental detection techniques including western blotting, immunofluorescence, enzyme-linked immunosorbent assay (ELISA), transmission electron microscopy (TEM) and RT-qPCR to assess the expression of the LC3 protein, autolysosome, and release of IL-1β and IL-8 from hPDLCs. Results Western blots, immunofluorescence and TEM results found that the nicotine significantly increased the autophagy expression in hPDLCs that was time and concentration dependent and reversed by α-BTX treatment (p < 0.05). RT-qPCR and ELISA results revealed a noticeable rise in the release of inflammatory factors IL-1β and IL-8 from hPDLCs in response to nicotine. RT-qPCR and ELISA results showed that nicotine can significantly up-regulate the release of inflammatory factors IL-1β and IL-8 in hPDLCs, and this effect can be inhibited by 3-MA (p < 0.05). Conclusions Nicotine regulated autophagy of hPDLCs through α7 nAChR and in turn the regulation of the release of inflammatory factors 1L-1β and 1L-8 by hPDLCs. Supplementary Information The online version contains supplementary material available at 10.1186/s12903-021-01894-5.
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Affiliation(s)
- Yang Du
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, No.145 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Kuan Yang
- Department of Orthodontics, College of Stomatology, Xi'an Jiaotong University, Xi'an, China
| | - Zhifei Zhou
- Department of Stomatology, The General Hospital of Tibetan Military Region, Lhasa, China
| | - Lizheng Wu
- Department of Stomatology, Characteristic Medical Center of People's Armed Police Force, Tianjin, China
| | - Lulu Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, No.145 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Yujiang Chen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, No.145 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Xin Ge
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, No.145 West Changle Road, Xi'an, 710032, Shaanxi, China
| | - Xiaojing Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Key Laboratory of Stomatology, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, No.145 West Changle Road, Xi'an, 710032, Shaanxi, China.
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11
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Panpradit N, Nilmoje T, Kasetsuwan J, Sangkhamanee SS, Surarit R. Effect of Nicotine and Porphyromonas gingivalis on the Differentiation Properties of Periodontal Ligament Fibroblasts. Eur J Dent 2021; 15:727-732. [PMID: 34331301 PMCID: PMC8630977 DOI: 10.1055/s-0041-1729678] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022] Open
Abstract
Objectives
This study aimed to evaluate the effect of
Porphyromonas gingivalis
and nicotine on the
in vitro
osteogenic differentiation of periodontal ligament (PDL) fibroblasts.
Materials and Methods
PDLs were cultured in Dulbecco’s modified Eagle’s medium containing 10% fetal bovine serum at 37°C under 5% CO
2
and 100% humidified atmosphere. Cells were incubated with various concentrations of nicotine and
P. gingivalis
extracts, and cell viability was determined by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide assay. To study cell differentiation, PDLs (5 × 10
4
cells) were treated with the osteogenic differentiation medium containing 10 mM β-glycerophosphate, 10 nM dexamethasone, 50 mg/mL ascorbic acid, 1 μM nicotine, and 50 µg/mL
P. gingivalis
lysate. mRNA samples were collected at 0, 7, and 14 days. Odontogenic-related gene expression, namely, Runt-related transcription factor 2 (
Runx2
), collagen type I (
COL1A1
), and alkaline phosphatase (
ALP
) was determined by reverse transcription quantitative polymerase chain reaction (RT-qPCR). Calcified nodule formation was determined on day 28 using Alizarin Red S. Analysis of variance and Tukey’s test were used to compare the difference among groups at significant level of
p
< 0.05.
Results
It showed that 50 µg/mL of
P. gingivalis
lysate and 1 µM of nicotine showed no toxicity to PDLs.
Runx2
,
COL1A1
, and
ALP
expression were found to decrease significantly after 7 days of treatment, while osteocalcin expression was found to decrease after 14 days. The nodule formation in the control group was much greater in both number and size of nodules than in experimental groups, which implied a positive sign of calcium deposition in controls.
Conclusion
The results indicated that nicotine and
P. gingivalis
showed adverse effect on osteogenic differentiation properties of PDLs.
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Affiliation(s)
- Naruemon Panpradit
- Department of Oral Medicine and Periodontology, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - Thanapoj Nilmoje
- Department of Oral Medicine and Periodontology, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
| | - Julalux Kasetsuwan
- Department of Oral Medicine and Periodontology, Faculty of Dentistry, Mahidol University, Bangkok, Thailand.,Section of Periodontology, College of Dental Medicine, Rangsit University, Patumthani, Thailand
| | | | - Rudee Surarit
- Department of Oral Biology, Faculty of Dentistry, Mahidol University, Bangkok, Thailand
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12
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Nguyen B, Alpagot T, Oh H, Ojcius D, Xiao N. Comparison of the effect of cigarette smoke on mesenchymal stem cells and dental stem cells. Am J Physiol Cell Physiol 2021; 320:C175-C181. [PMID: 33175571 DOI: 10.1152/ajpcell.00217.2020] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The persistent prevalence of cigarette smoking continues to contribute to preventable disease and death in the United States. Although much is known about the deleterious systemic effects of cigarette smoke and nicotine, some clinically relevant areas, such as the impact of cigarette smoke and nicotine on stem cells and the subsequent implications in regenerative medicine, still remain unclear. This review focuses on recent studies on the effect of cigarette smoke and one of its deleterious components, nicotine, on mesenchymal stem cells, with an emphasis on dental stem cells.
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Affiliation(s)
- Brandon Nguyen
- Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, California
| | - Tamer Alpagot
- Department of Periodontics, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, California
| | - Heesoo Oh
- Department of Orthodontics, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, California
| | - David Ojcius
- Department of Biomedical Sciences, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, California
| | - Nan Xiao
- Department of Biomedical Sciences, Arthur A. Dugoni School of Dentistry, University of the Pacific, San Francisco, California
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13
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Roux CH, Coste J, Roger C, Fontas E, Rat AC, Guillemin F. Impact of smoking on femorotibial and hip osteoarthritis progression: 3-year follow-up data from the KHOALA cohort. Joint Bone Spine 2020; 88:105077. [PMID: 32950705 DOI: 10.1016/j.jbspin.2020.09.009] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 09/08/2020] [Indexed: 11/24/2022]
Abstract
OBJECTIVES To evaluate the clinical and structural impact of smoking on knee and hip osteoarthritis at baseline and after 3years. METHODS Observational data on the progressive effects of smoking at baseline and after 3years were collected from The Knee and Hip Osteoarthritis Long-Term Assessment cohort comprising a French population of patients aged 40-75years with symptomatic lower limb osteoarthritis. Clinical (the Western Ontario and McMaster Universities Arthritis Index and Harris scores) and structural (radiography for osteophyte detection and joint-space narrowing assessment) were conducted. The tobacco usage categories were 'never smoker', 'former smoker', and 'current smoker'. RESULTS Of the 873 subjects included, 215 (25%) were former smokers and 119 (14%) were current smokers. Multivariate analyses revealed that former and current smokers had fewer knee osteophytes in the medial compartment at baseline (odds ratio [OR]=0.64 [0.41-0.99] and 0.63 [0.36-1.11], respectively), lower osteophyte development in the lateral condyle after 3years (OR=011 [0.03-0.45] and 0.15 [0.03-0.97]), and lower osteophyte development in the lateral tibial plateau after 3years (OR=0.22 [0.06-0.75] and 0.68 [0.14-3.35]). Higher tobacco consumption and longer duration of consumption were significantly associated with fewer knee osteophytes at baseline and lower osteophyte development at 3years. CONCLUSION Although cigarette smoking did not influence knee function, pain, or the need for replacement surgery, current and former smokers developed fewer osteophytes. This relationship may be linked to the quantity and duration of consumption. Our results provide further insight into the smoking-related pathophysiology of osteoarthritis.
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Affiliation(s)
- Christian Hubert Roux
- Rheumatology Department, University Nice Sophia Antipolis, LAMHESS, EA 6312, CHU Nice, Nice, France.
| | - Joël Coste
- Biostatistics and Epidemiology Unit, Assistance Publique-Hôpitaux de Paris, Hôtel Dieu, Paris, France
| | - Coralie Roger
- Department of Clinical Research and Innovation, University Hospital of Nice, Nice, France
| | - Eric Fontas
- Department of Clinical Research and Innovation, University Hospital of Nice, Nice, France
| | - Anne-Christine Rat
- CIC 1433 Clinical Epidemiology, Inserm, CHRU University of Lorraine, Nancy, France
| | - Francis Guillemin
- CIC 1433 Clinical Epidemiology, Inserm, CHRU University of Lorraine, Nancy, France
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14
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Kenmochi H, Yamasaki T, Koizumi S, Sameshima T, Namba H. Nicotine does not affect stem cell properties requisite for suicide gene therapy against glioma. Neurol Res 2020; 42:818-827. [PMID: 32588772 DOI: 10.1080/01616412.2020.1782123] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
OBJECTIVE: Glioblastoma is one of the most lethal tumors in adult central nervous system with a median survival of a year and half and effective therapeutic strategy is urgently needed. For that reason, stem cell-based suicide gene therapies have attracted much interest because of potent tumor tropism of stem cells and bystander effect. In this current clinical situation, stem cells are promising delivery tool of suicide genes for glioma therapy. Since habitual cigarette smoking still prevails worldwide, we investigated the effect of nicotine on stem cell tropism toward glioma and gap junctional intercellular communication (GJIC) function between glioma and stem cells, both of which are important for suicide gene therapies. Methods: Mouse induced pluripotent stem cell-derived neural stem cells (iPS-NSCs) and human dental pulp mesenchymal stem cells (DPSCs) were used. The effect of nicotine on tumor tropism to glioma-conditioned medium (CM) at a non-cytotoxic concentration was assessed with Matrigel invasion assay. Nicotine effect on GJIC was assessed with the scrape loading/dye transfer (SL/DT) assay for co-culture of glioma and stem cells and the parachute assay among glioma cells using high-content analysis. Results: Tumor tropism of iPS-NSCs toward GL261-CM and DPSCs toward U251-CM was not affected by nicotine (0.1 and 1 µM). Nicotine at the concentrations equivalent to habitual smoking (1 µM) did not affect GJIC of iPS-NSC/GL261 and DPSC/U251 and GJIC among each glioma cells. Conclusions: The study demonstrated that non-cytotoxic concentrations of nicotine did not significantly change the stem cell properties requisite for stem cell-based suicide gene therapy.
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Affiliation(s)
- Hiroaki Kenmochi
- Department of Neurosurgery, Hamamatsu University School of Medicine , Higashi-ku, Hamamatsu, Japan
| | - Tomohiro Yamasaki
- Department of Neurosurgery, Hamamatsu University School of Medicine , Higashi-ku, Hamamatsu, Japan
| | - Shinichiro Koizumi
- Department of Neurosurgery, Hamamatsu University School of Medicine , Higashi-ku, Hamamatsu, Japan
| | - Tetsuro Sameshima
- Department of Neurosurgery, Hamamatsu University School of Medicine , Higashi-ku, Hamamatsu, Japan
| | - Hiroki Namba
- Department of Neurosurgery, Hamamatsu University School of Medicine , Higashi-ku, Hamamatsu, Japan
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15
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Zhou Z, Liu F, Wang L, Zhu B, Chen Y, Yu Y, Wang X. Inflammation has synergistic effect with nicotine in periodontitis by up-regulating the expression of α7 nAChR via phosphorylated GSK-3β. J Cell Mol Med 2020; 24:2663-2676. [PMID: 31930698 PMCID: PMC7028870 DOI: 10.1111/jcmm.14986] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 11/26/2019] [Accepted: 12/16/2019] [Indexed: 12/17/2022] Open
Abstract
Periodontitis is the leading cause of adult tooth loss, and those who smoke are at an increased risk of developing periodontitis. α7 nicotinic acetylcholine receptor (α7 nAChR) is proposed to mediate the potential synergistic effect of nicotine and inflammation in smoking‐related periodontitis. However, this has not been experimentally demonstrated. We isolated and cultured human periodontal ligament stem cells (PDLSCs) from healthy and inflamed tissues. PDLSCs were treated with either inflammatory factors or nicotine. We measured expression of genes that are associated with osteogenic differentiation and osteoclast formation using RT‐qPCR and Western blot analyses. Besides, immunohistochemical staining, micro‐CT analysis and tartaric acid phosphatase staining were used to measure α7 nAChR expression and function. Inflammation up‐regulated α7 nAChR expression in both periodontal ligament tissues and PDLSCs. The up‐regulated α7 nAChR contributed to the synergistic effect of nicotine and inflammation, leading to a decreased capability of osteogenic differentiation and increased capability of osteoclast formation‐induction of PDLSCs. Moreover, the inflammation‐induced up‐regulation of α7 nAChR was partially dependent on the level of phosphorylated GSK‐3β. This study provides experimental evidence for the pathological development of smoking‐related periodontitis and sheds new light on developing inflammation and α7 nAChR‐targeted therapeutics to treat and prevent the disease.
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Affiliation(s)
- Zhifei Zhou
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, Air Force Medical University, Xi'an, China.,Department of Stomatology, General Hospital of Tibetan Military Command, Lhasa, China
| | - Fen Liu
- Department of Stomatology, Northwest Women's and Children's Hospital, Xi'an, China.,State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Engineering Research Center for Dental Materials and Advanced Manufacture, Department of Periodontology, School of Stomatology, Air Force Medical University, Xi'an, China
| | - Lulu Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, Air Force Medical University, Xi'an, China
| | - Bin Zhu
- Department of Stomatology, General Hospital of Tibetan Military Command, Lhasa, China
| | - Yujiang Chen
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, Air Force Medical University, Xi'an, China
| | - Yang Yu
- Stomatological Hospital of Chongqing Medical University & Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences & Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higer Education, Chongqing, China
| | - Xiaojing Wang
- State Key Laboratory of Military Stomatology & National Clinical Research Center for Oral Diseases & Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, Air Force Medical University, Xi'an, China
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16
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Li J, Peng Y. Effect of puerarin on osteogenic differentiation of human periodontal ligament stem cells. J Int Med Res 2019; 48:300060519851641. [PMID: 31885340 PMCID: PMC7607290 DOI: 10.1177/0300060519851641] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Objective To investigate the effects of the flavonoid, puerarin, on osteogenic
differentiation of human periodontal ligament stem cells (PDLSCs). Methods Human PDLSCs were isolated from patients undergoing orthodontic treatment,
and the cell surface markers CD146, CD34, CD45, and STRO-1 were identified
by immunofluorescence. Cell proliferation was detected by MTT assay;
alkaline phosphatase (ALP) activity was measured, and calcium deposition was
detected by alizarin red staining. PCR was then used to detect the
distributions of COL-I, OPN,
Runx2, and OCN, genes related to
osteogenic differentiation. Results Staining was positive for cytokines CD146, CD34, CD45, and STRO-1 in the
experimental group; staining was also positive for silk protein, but
negative for keratin. After 7 days of culture, exposure to puerarin
significantly promoted the level of intracellular ALP; increased puerarin
concentration led to increased intracellular ALP. Red mineralized nodules
appeared upon exposure to puerarin and the number of nodules was
concentration-dependent. PCR analysis revealed that COL-I,
OPN, Runx2, and OCN
expression levels increased as puerarin concentration increased. Conclusions Exposure to puerarin can promote proliferation and ALP activity in human
PDLSCs, thus promoting both molecular and osteogenic differentiation; these
findings may provide a theoretical basis for the clinical treatment of
periodontal disease with puerarin.
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Affiliation(s)
- Jun Li
- Department of Stomatology, Renmin Hospital of Wuhan University, Wuhan, China
| | - Youjian Peng
- Department of Stomatology, Renmin Hospital of Wuhan University, Wuhan, China
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17
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Bozkurt SB, Hakki SS. Nicotine suppresses proliferation and mineralized tissue‐associated gene expressions of cementoblasts. J Periodontol 2019; 91:800-808. [DOI: 10.1002/jper.19-0256] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 06/30/2019] [Accepted: 08/02/2019] [Indexed: 02/04/2023]
Affiliation(s)
| | - Sema Sezgin Hakki
- Research Center of Dental FacultySelcuk University Konya Turkey
- Faculty of DentistryDepartment of PeriodontologySelcuk University Konya Turkey
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18
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Wu L, Yang K, Gui Y, Wang X. Nicotine-upregulated miR-30a arrests cell cycle in G1 phase by directly targeting CCNE2 in human periodontal ligament cells. Biochem Cell Biol 2019; 98:354-361. [PMID: 31689122 DOI: 10.1139/bcb-2019-0156] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023] Open
Abstract
The consumption of nicotine via smoking tobacco has been reported to stimulate the occurrence and progression of periodontitis. Many studies have demonstrated that nicotine prevents the regeneration of periodontal tissues primarily by inhibiting the proliferation of human periodontal ligament (PDL) cells. However, the mechanisms underlying this process are still unclear. Therefore, we investigated whether nicotine-upregulated miR-30a inhibited the proliferation of human PDL cells by downregulating cyclin E2 (CCNE2), in vitro. Quantitative real-time PCR analysis revealed that nicotine upregulated the expression of miR-30a in human PDL cells. In addition, nicotine inhibited the proliferation of human PDL cells by inducing cell cycle arrest. To support this hypothesis, we showed that nicotine downregulated the expression of CCNE2 in human PDL cells, whereas inhibition of miR-30a restored CCNE2 expression that had been downregulated by nicotine. Furthermore, using luciferase reporter assays, we found that miR-30a directly interacts with the CCNE2 3'UTR. In conclusion, these findings indicate that nicotine-upregulated miR-30a inhibits the proliferation of human PDL cells by downregulating the expression of CCNE2.
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Affiliation(s)
- Lizheng Wu
- Department of Stomatology, Characteristic Medical Center of the Chinese people's Armed Police Force, Tianjin, China.,State Key Laboratory of Military Stomatology, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
| | - Kuan Yang
- Department of Orthodontics, College of Stomatology, Xi'an Jiaotong University
| | - Yajie Gui
- Department of Stomatology, Characteristic Medical Center of the Chinese people's Armed Police Force, Tianjin, China
| | - Xiaojing Wang
- State Key Laboratory of Military Stomatology, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an, Shaanxi, China
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19
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Mechanical Stress Modulates the RANKL/OPG System of Periodontal Ligament Stem Cells via α7 nAChR in Human Deciduous Teeth: An In Vitro Study. Stem Cells Int 2019; 2019:5326341. [PMID: 31191674 PMCID: PMC6525817 DOI: 10.1155/2019/5326341] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Revised: 02/03/2019] [Accepted: 03/24/2019] [Indexed: 11/29/2022] Open
Abstract
The aim of this study was to investigate the mechanism by which periodontal ligament stem cells (PDLSCs) modulate root resorption of human deciduous teeth under mechanical stress. In this investigation, the PDLSCs were derived from deciduous and permanent teeth at different stages of root resorption. A cyclic hydraulic pressure was applied on the PDLSCs to mimic chewing forces in the oral environment. The cultured cells were characterized using osteogenic and adipogenic differentiation assays, quantitative real-time polymerase chain reaction (qRT-PCR), and Western blotting analysis. The PDLSCs exhibited the ability to induce osteoclast differentiation under certain mechanical stresses. As the expressions of RUNX2, alkaline phosphatase (ALP), and osteoprotegerin (OPG) were significantly reduced, the receptor activator of the nuclear factor kappa-B ligand (RANKL) was upregulated increasing the RANKL/OPG ratio. Under hydrodynamic pressure at 0-135 kPa, the expressions of alpha 7 nicotinic acetylcholine receptors (α7 nAChR), p-GSK-3β, and active-β-catenin were markedly upregulated in PDLSCs from unresorbed deciduous teeth. Treatment with the α7 nAChR inhibitor alpha-bungarotoxin (α-BTX) and the Wnt pathway inhibitor DKK1 may reverse the mechanical stress inducing upregulation of RANKL and reduction of RUNX2, ALP, and OPG. Alizarin red staining confirmed these results. The mechanical stress applied on the deciduous tooth PDLSCs can induce osteoclastic effects through upregulation of α7 nAChR and activation of the canonical Wnt pathway. It can be suggested that chewing forces may play a major role at the beginning of the physiological root resorption of deciduous teeth.
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The Effect of Smoking Behavior on Alveolar Bone Marrow Mesenchymal Stem Cells of Clinical Implant Patient. BIOMED RESEARCH INTERNATIONAL 2018; 2018:7672695. [PMID: 30584539 PMCID: PMC6280244 DOI: 10.1155/2018/7672695] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 11/05/2018] [Indexed: 12/01/2022]
Abstract
Objective The hazardous effects of smoking on the alveolar bone healing after implant surgery and nicotine on the biofunction of human alveolar bone marrow mesenchymal stem cells (hABMMSCs) were reported. There was little direct evidence regarding the specific detrimental effects of the smoking on hABMMSCs. The aim of this study was to test the influence of smoking behavior on hABMMSCs and the osseointegration situation after implant surgery. Methods hABMMSCs from 6 dental implant patients randomly (3 smokers and 3 nonsmokers) were compared. The cell viability, colony forming unit, and cell cycle were performed to assay proliferation capacity. The Oil Red O staining, Alizarin Red staining, alkaline phosphatase staining and activity, adipogenic and osteogenic gene expressions in vitro, and bone formation ectopically in vivo were performed under proper inductions, respectively, to assay multilineage differentiation. Besides the implant stability quotient and marginal bone loss were checked in both groups. Results Smoking hABMMSCs showed lower proliferation in vitro and poorer bone regeneration capacity in vivo. Moreover, smokers performed worse on bone healing after implant surgery. Conclusions Our results suggested smoking had the detrimental genetic effect on proliferation and osteogenesis of hABMMSCs and the decreased biofunction of hABMMSCs was positively related with bone healing. Clinical Significance The present study provided direct evidence about hazardous effects of smoking behavior on hABMMSCs. Smoking decreased the osteogenesis and proliferation of hABMMSCs in vivo and in vitro, and smoking was positively related with osseointegration reduction. Prevention of smoking behavior may promote biofunction of hABMMSCs and successful rate of dental implant.
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Luan Y, Deqin Y. [The effect of Toll-like receptor 4 in nicotine suppressing the osteogenic potential of periodontal ligament stem cells]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2018; 35:368-372. [PMID: 28853501 DOI: 10.7518/hxkq.2017.04.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Objective To explore the impact of nicotine on proliferation and osteogenic capability of periodontal ligament stem cells (PDLSCs), and the role of Toll-like receptor 4 (TLR4) in nicotine, suppressing the osteogenic capability of PDLSCs. Methods PDLSCs were cultured in vitro, and the flow cytometer was used to identify the surface antigen markers of PDLSCs. WST-1 was used to detect the proliferation ability of PDLSCs, which were stimulated by different concentrations of nicotine. Alizarin red staining was used to observe the formation of mineralized nodules after PDLSCs stimulation with different concentrations of nicotine. Real-time polymerase chain reaction (RT-PCR) and Western blot were used to detect the change in osteogenic potential of PDLSCs stimulated by nicotine, after TAK-242, and with the inhibitor of TLR4. Results PDLSCs expressed mesenchymal stem cell-associated markers CD90 and CD105. When the concentration of nicotine was 10⁻⁴ mol·L⁻¹, the PDLSC proliferation could be suppressed after 3 d compared with the control group (P<0.05). The amount of mineralized nodules reduced after osteogenic differentiation at 21 d by alizarin red staining. RT-PCR and Western blot showed the expression levels of alkaline phosphatase (ALP), and osteocalcin (OCN), and the Runt-related transcription factor-2 (Runx-2) were lower than in the control group when nicotine suppressed the PDLSCs (P<0.05). This effect was attenuated after TAK-242 was added. Conclusion Nicotine suppresses the proliferation and osteogenic capability of PDLSCs, which may be regulated by TLR4.
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Affiliation(s)
- Yan Luan
- Dept. of Conservative Dentistry and Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, China
| | - Yang Deqin
- Dept. of Conservative Dentistry and Endodontics, Stomatological Hospital of Chongqing Medical University, Chongqing Key Laboratory of Oral Diseases and Biomedical Sciences, Chongqing Municipal Key Laboratory of Oral Biomedical Engineering of Higher Education, Chongqing 401147, China
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Yu W, Hu B, Shi X, Cao Z, Ren M, He Z, Lin J, Deng H, Hu R. Nicotine inhibits osteogenic differentiation of human periodontal ligament cells under cyclic tensile stress through canonical Wnt pathway and α7 nicotinic acetylcholine receptor. J Periodontal Res 2018; 53:555-564. [PMID: 29603740 DOI: 10.1111/jre.12545] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/13/2018] [Indexed: 12/29/2022]
Abstract
BACKGROUND AND OBJECTIVES Nicotine, the main psychoactive component of tobacco, affects cell metabolism, proliferation, adhesion and, importantly, the osteogenic differentiation of fibroblasts. Approximately 15% of all orthodontic patients are adults among who one-fifth are smokers. Hence, it is necessary to have insight into the effects of nicotine on the osteogenic differentiation of hPDLCs during orthodontic tooth movement. This study aimed to investigate the effects and mechanisms of nicotine on the osteogenic differentiation of human periodontal ligament cells (hPDLCs) under the application of cyclic tensile stress. MATERIAL AND METHODS hPDLCs were obtained from donor third molars. The hPDLCs were treated with nicotine and/or cyclic tensile stress that was applied with a cell stress plus unit. The effect of nicotine on cell viability was analyzed using the MTT assay. The osteogenic differentiation of hPDLCs was detected by alkaline phosphatase staining, Alizarin Red S staining, quantitative real-time polymerase chain reaction and western blotting. RESULTS In combination with cyclic tensile stress, nicotine prevented the tensile stress-induced increase in alkaline phosphatase activity, formation of mineralization nodules and the upregulation of mRNA and protein expression of Runt-related transcription factor 2, transcription factor Sp7 and collagen type I; however, canonical Wnt pathway was activated. Furthermore, the addition of Dickkopf-related protein 1 and α-bungarotoxin counteracted the negative effect of nicotine and rescued the osteogenic differentiation of hPDLCs, respectively. CONCLUSION These results indicate that nicotine prevents the increased osteogenic potential of hPDLCs induced by cyclic tensile stress by binding to an α7 nicotinic acetylcholine receptor and activating the canonical Wnt pathway.
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Affiliation(s)
- W Yu
- Department of Orthodontics, School of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - B Hu
- Department of Orthodontics, School of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - X Shi
- Department of Periodontics, School of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Z Cao
- Department of Orthodontics, School of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - M Ren
- Department of Periodontics, School of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - Z He
- Department of Orthodontics, School of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - J Lin
- Department of Periodontics, School of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - H Deng
- Department of Periodontics, School of Stomatology, Wenzhou Medical University, Wenzhou, China
| | - R Hu
- Department of Orthodontics, School of Stomatology, Wenzhou Medical University, Wenzhou, China
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Yang D, Shuai Y, Zhifei Z, Lizheng W, Lulu W, Xing'an W, Xiaojing W. [A preliminary study on the autophagy level of human periodontal ligament cells regulated by nicotine]. HUA XI KOU QIANG YI XUE ZA ZHI = HUAXI KOUQIANG YIXUE ZAZHI = WEST CHINA JOURNAL OF STOMATOLOGY 2017; 35:198-202. [PMID: 28682553 DOI: 10.7518/hxkq.2017.02.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
OBJECTIVE To explore the effect of nicotine on the autophagy level of human periodontal ligament cells (hPDLCs). METHODS Periodontal tissues collected from premolars for orthodontic treatment reasons were used to culture hPDLCs. Western blot analysis was performed to test the most optimal time and concentration of nicotine on the autophagy level of the hPDLCs. Transmission electron microscope and immunofluorescence observation were carried out to detect the form of autophagosomes and expression of autophagy related protein LC3 in hPDLCs under this optimal condition. RESULTS Protein expression of LC3Ⅱ was up regulated with the 12 h nicotine stimulating. Besides that, the up regulation of the protein expression of LC3Ⅱ was concentration dependent and nicotine with a concentration of 1×10⁻⁵ mol·L⁻¹ was the most optimal condition. Transmission electron microscope and immunofluorescence observations indicated that nicotine would activate the autophagy level of hPDLCs by increasing the number of autophagosomes and up regulating the expression of autophagy related protein LC3. CONCLUSIONS Nicotine could increase autophagy level of hPDLCs, thus affecting the occurrence and development of smoking related periodontitis.
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Affiliation(s)
- Du Yang
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shanxi Clinical Research Center for Oral Diseases, Dept. of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Yuan Shuai
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shanxi Clinical Research Center for Oral Diseases, Dept. of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Zhou Zhifei
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shanxi Clinical Research Center for Oral Diseases, Dept. of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Wu Lizheng
- Dept. of Stomatology, Affiliated Hospital of Logistics University of People's Armed Police Force, Tianjin 300300, China
| | - Wang Lulu
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shanxi Clinical Research Center for Oral Diseases, Dept. of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
| | - Wu Xing'an
- Dept. of Microbiology, The Fourth Military Medical University, Xi'an 710032, China
| | - Wang Xiaojing
- State Key Laboratory of Military Stomatology, National Clinical Research Center for Oral Diseases, Shanxi Clinical Research Center for Oral Diseases, Dept. of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University, Xi'an 710032, China
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Janket SJ, Qureshi M, Bascones-Martinez A, González-Febles J, Meurman JH. Holistic paradigm in carcinogenesis: Genetics, epigenetics, immunity, inflammation and oral infections. World J Immunol 2017; 7:11-23. [DOI: 10.5411/wji.v7.i2.11] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 02/25/2017] [Accepted: 04/07/2017] [Indexed: 02/05/2023] Open
Abstract
Recent debate among the experts of cancer research regarding the main causes of carcinogenesis encouraged us to review the etiology of cancer pathogenesis. The somatic mutation theory attributes carcinogenesis to random errors in DNA multiplication while the tissue organization field theory ascribes causation to environmental factors. We recognize complexity in cancer pathogenesis and accept the premise of both DNA multiplication errors and environmental factors in cancer development. Furthermore, it should also be noted that the combination of these factors and the relative importance of the each differ in various types of cancers. For example, in some cancers, genetics plays a prominent role while in others environment such as obesity plays a much stronger role. Additionally, the cancer mitigating factors should also be considered. The balance of cancer-enhancing and cancer-suppressing forces determines the cancer incidence. Ultimately, identifying the lifestyle factors that revise somatic mutations or epigenetic alterations will lead to a clear understanding of pathogenic mechanisms of cancer and to the optimal preventive strategies. This narrative review evaluates the published evidence on carcinogenesis pertaining to the whole organism (thus, holistic) incorporating genetics, epigenetics, immunology, inflammation and infections with emphasis on oral infections.
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Yang X, Qi Y, Avercenc-Leger L, Vincourt JB, Hupont S, Huselstein C, Wang H, Chen L, Magdalou J. Effect of nicotine on the proliferation and chondrogenic differentiation of the human Wharton's jelly mesenchymal stem cells. Biomed Mater Eng 2017; 28:S217-S228. [PMID: 28372298 DOI: 10.3233/bme-171644] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
BACKGROUND Osteoarthritis (OA) is a chronic joint disease characterized by a progressive and irreversible degeneration of articular cartilage. Among the environmental risk factors of OA, tobacco consumption features prominently, although, there is a great controversy regarding the role of tobacco smoking in OA development. Among the numerous chemicals present in cigarette smoke, nicotine is one of the most physiologically active molecules. OBJECTIVE The aim of the study was (i) to measure the impact of nicotine on the proliferation and chondrogenic differentiation of mesenchymal stem cells from the human Wharton's jelly (hWJ-MSCs) into chondrocytes, (ii) to investigate whether the α7 nicotinic acetylcholine receptors (nAChRs) was expressed in hWJ-MSCs and could play a role in the process. The project benefits from the availability of an umbilical cord bank from which hWJ-MSCs were originated. METHODS The hWJ-MSCs were cultured and used up to passage 5. The proliferation of hWJ-MSCs with 5 μM nicotine was measured by the MTT assay on the 1st, 2nd, 3rd, and 6th day. Flow cytometry analysis was used to detect cell apoptosis/necrosis by Annexin V/PI double-staining. The chondrogenic differentiation grade of hWJ-MSCs induced by TGFβ3 was assessed by the Sirius red and Alcian blue staining. The expression of markers genes was followed by quantitative real-time PCR. The expression of nAChRs was followed by RT-PCR. The functional activity of α7 nAChR was evaluated by calcium (Ca2+) influx mediated by nicotine using the Fluo-4 NW Calcium assay. RESULTS The proliferation of hWJ-MSCs was significantly impaired by nicotine (5 μM) from the 3rd day of treatment, but nicotine did not significantly induce modifications on the viability of hWJ-MSCs. Alcian blue staining indicated that the amount of proteoglycan was more abundant in control group than in the nicotine group, but no difference was observed on the total collagen amount using Sirius red staining. The mRNA expression of Sox9, type II collagen (Col2a1), aggrecan in control group was higher than in the nicotine group. We found that hWJ-MSCs expressed α7 nAChR. The receptor agonist nicotine caused calcium (Ca2+) influx into hWJ-MSCs suggesting that the calcium ion channel α7 homopolymer could mediate this response. CONCLUSIONS At the concentration used, nicotine had an adverse effect on the proliferation and chondrogenic differentiation of hWJ-MSCs which was probably impaired through a α7 nAChR mediation.
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Affiliation(s)
- Xu Yang
- UMR 7365 CNRS-UL, Faculté de Médecine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), 54505 Vandœuvre-lès-Nancy, France.,Department of Orthopaedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Yongjian Qi
- Department of Orthopaedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Léonore Avercenc-Leger
- UMR 7365 CNRS-UL, Faculté de Médecine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), 54505 Vandœuvre-lès-Nancy, France
| | - Jean-Baptiste Vincourt
- UMR 7365 CNRS-UL, Faculté de Médecine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), 54505 Vandœuvre-lès-Nancy, France
| | - Sébastien Hupont
- Faculté de Médecine, Bio-ingénierie Moléculaire Cellulaire et Thérapeutique FR3209 CNRS, Campus Biologie Santé, 54505 Vandœuvre-lès-Nancy, France
| | - Céline Huselstein
- UMR 7365 CNRS-UL, Faculté de Médecine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), 54505 Vandœuvre-lès-Nancy, France
| | - Hui Wang
- Department of Pharmacology, Basic Medical School of Wuhan University, Wuhan 430071, China.,Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan 430071, China
| | - Liaobin Chen
- Department of Orthopaedic Surgery, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Jacques Magdalou
- UMR 7365 CNRS-UL, Faculté de Médecine, Ingénierie Moléculaire et Physiopathologie Articulaire (IMoPA), 54505 Vandœuvre-lès-Nancy, France
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Greenberg JM, Carballosa CM, Cheung HS. Concise Review: The Deleterious Effects of Cigarette Smoking and Nicotine Usage and Mesenchymal Stem Cell Function and Implications for Cell-Based Therapies. Stem Cells Transl Med 2017; 6:1815-1821. [PMID: 28696009 PMCID: PMC5689746 DOI: 10.1002/sctm.17-0060] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2017] [Accepted: 06/14/2017] [Indexed: 12/22/2022] Open
Abstract
Stem cell sources for cell‐based therapeutics are often screened for infectious agents and genetic diseases prior to implantation; however, there are other risk factors that are often overlooked, which may ultimately lead to less efficacious clinical outcomes. One such risk factor is exposure of mesenchymal stem cells (MSCs) to cigarette smoke or nicotine. Recent data have shown that exposure to cigarette smoke or nicotine leads to decreased regenerative potential, namely decreased proliferation, decreased migration, and decreased differentiation potential of exposed MSCs. This review provides a brief introduction into MSCs and their respective niches and a summary regarding the interactions of cigarettes and nicotine with MSCs populations. Specifically, the effects of cigarette smoke and nicotine on the regenerative potential of MSCs (i.e., proliferation, migration, and differentiation) will be covered with an emphasis on considerations for the development of future cell‐based clinical trials and therapies. stemcellstranslationalmedicine2017;6:1815–1821
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Affiliation(s)
- Jordan M Greenberg
- Department of Biomedical Engineering, College of Engineering, University of Miami, Coral Gables, Florida, USA
| | - Carlos M Carballosa
- Department of Biomedical Engineering, College of Engineering, University of Miami, Coral Gables, Florida, USA
| | - Herman S Cheung
- Department of Biomedical Engineering, College of Engineering, University of Miami, Coral Gables, Florida, USA.,Geriatric Research, Education and Clinical Center (GRECC); Miami Veterans Affairs Medical Center, Miami, Florida, USA
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Wang L, Zhou Z, Chen Y, Yuan S, Du Y, Ju X, Wu L, Wang X. The Alpha 7 Nicotinic Acetylcholine Receptor of Deciduous Dental Pulp Stem Cells Regulates Osteoclastogenesis During Physiological Root Resorption. Stem Cells Dev 2017; 26:1186-1198. [PMID: 28494644 DOI: 10.1089/scd.2017.0033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
The physiological root resorption of deciduous teeth is a normal phenomenon, but the mechanisms underlying this process are still unclear. In this study, deciduous dental pulp stem cells (DDPSCs) and permanent dental pulp stem cells (DPSCs) were derived from deciduous teeth and normal permanent teeth at different stages of resorption. In the middle stage of root resorption, DDPSCs exhibited an increase in the ability to induce osteoclast differentiation. Activation of the alpha 7 nicotinic acetylcholine receptor (α7 nAChR) by secretory mammalian Ly-6 urokinase-type plasminogen activator receptor-associated protein 1 (SLURP-1) caused a significant increase in the expression levels of NF-κB, receptor activator of nuclear factor-kappa B ligand (RANKL), and the ratio of RANKL/osteoprotegerin (OPG). These effects were inhibited by alpha-bungarotoxin (α-BTX). Furthermore, the expression levels of RANKL/OPG were significantly reduced following inhibition of NF-κB. High-strength, dynamic positive pressure increased the expression of SLURP-1 and α7 nAChR in DDPSCs in the stable stage. These data indicated that mechanical stress stimulated the expression of SLURP-1 and α7 nAChR in DDPSCs. Additionally, SLURP-1 activated α7 nAChR, thereby upregulating the expression of NF-κB and enhancing its activity, thus regulating RANKL/OPG expression and affecting the ability of DDPSCs to influence osteoclastogenesis, which likely enhances root resorption and leads to the physiological loss of deciduous teeth.
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Affiliation(s)
- Lulu Wang
- 1 State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases, and Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University , Xi'an, China
| | - Zhifei Zhou
- 1 State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases, and Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University , Xi'an, China
| | - Yujiang Chen
- 1 State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases, and Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University , Xi'an, China
| | - Shuai Yuan
- 1 State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases, and Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University , Xi'an, China
| | - Yang Du
- 1 State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases, and Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University , Xi'an, China
| | - Xinke Ju
- 1 State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases, and Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University , Xi'an, China
| | - Lizheng Wu
- 2 Department of Stomatology, Affiliated Hospital of Logistic University of People's Armed Police Forces , Tianjin, China
| | - Xiaojing Wang
- 1 State Key Laboratory of Military Stomatology and National Clinical Research Center for Oral Diseases, and Shaanxi Clinical Research Center for Oral Diseases, Department of Pediatric Dentistry, School of Stomatology, The Fourth Military Medical University , Xi'an, China
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Chen Z, Liu HL. Restoration of miR-1305 relieves the inhibitory effect of nicotine on periodontal ligament-derived stem cell proliferation, migration, and osteogenic differentiation. J Oral Pathol Med 2016; 46:313-320. [PMID: 27604968 DOI: 10.1111/jop.12492] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/08/2016] [Indexed: 12/26/2022]
Abstract
BACKGROUND Nicotine hinders the regenerative potentials of human periodontal ligament-derived stem cells (PDLSCs) and delays the healing process of periodontal diseases, but the underlying mechanism remains unclear. miR-1305 upregulation and its potential target RUNX2 downregulation exist in the PDLSCs exposed to nicotine. In this study, we aimed to investigate whether nicotine inhibits PDLSC proliferation, migration, and osteogenic differentiation by increasing miR-1305 level and decreasing RUNX2 level. METHODS Quantitative real-time PCR (qRT-PCR) and Western blot assays were performed to detect the expression levels of miR-1305 and RUNX2 in the PDLSCs exposed to nicotine, respectively. PDLSCs with miR-1305 overexpression, low expression, or RUNX2 overexpression were constructed by lipofectin transfection. MTT, migration, and Western blot assays were applied to assess the effect of miR-1305 on PDLSC proliferation, migration, and osteogenic differentiation, respectively. Target prediction and luciferase reporter assays were performed to investigate the targets of miR-1305. RESULTS Nicotine promoted miR-1305 expression and inhibited RUNX2 expression in PDLSCs. Cell proliferation, migration, and differentiation detection showed that nicotine suppressed proliferation, migration, and osteogenic differentiation of PDLSCs, and restoration of miR-1305 relieved the inhibitory effect of nicotine on PDLSCs. Moreover, we identified and validated that RUNX2 was a direct target of miR-1305, and upregulation of RUNX2 had similar effects with the downregulation of miR-1305 on relieving the inhibitory effect of nicotine on PDLSCs. CONCLUSION Nicotine suppresses proliferation, migration, and osteogenic differentiation of PDLSCs, and restoration of miR-1305 relieves the inhibitory effect of nicotine on PDLSCs depending on its target RUNX2.
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Affiliation(s)
- Zhuo Chen
- Department of Stomatology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
| | - Hui-Li Liu
- Department of Stomatology, Zhengzhou Central Hospital Affiliated to Zhengzhou University, Zhengzhou, China
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Arvaniti M, Jensen MM, Soni N, Wang H, Klein AB, Thiriet N, Pinborg LH, Muldoon PP, Wienecke J, Imad Damaj M, Kohlmeier KA, Gondré-Lewis MC, Mikkelsen JD, Thomsen MS. Functional interaction between Lypd6 and nicotinic acetylcholine receptors. J Neurochem 2016; 138:806-20. [PMID: 27344019 PMCID: PMC5017906 DOI: 10.1111/jnc.13718] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2016] [Revised: 06/22/2016] [Accepted: 06/24/2016] [Indexed: 01/15/2023]
Abstract
Nicotinic acetylcholine receptors (nAChRs) affect multiple physiological functions in the brain and their functions are modulated by regulatory proteins of the Lynx family. Here, we report for the first time a direct interaction of the Lynx protein LY6/PLAUR domain-containing 6 (Lypd6) with nAChRs in human brain extracts, identifying Lypd6 as a novel regulator of nAChR function. Using protein cross-linking and affinity purification from human temporal cortical extracts, we demonstrate that Lypd6 is a synaptically enriched membrane-bound protein that binds to multiple nAChR subtypes in the human brain. Additionally, soluble recombinant Lypd6 protein attenuates nicotine-induced hippocampal inward currents in rat brain slices and decreases nicotine-induced extracellular signal-regulated kinase phosphorylation in PC12 cells, suggesting that binding of Lypd6 is sufficient to inhibit nAChR-mediated intracellular signaling. We further show that perinatal nicotine exposure in rats (4 mg/kg/day through minipumps to dams from embryonic day 7 to post-natal day 21) significantly increases Lypd6 protein levels in the hippocampus in adulthood, which did not occur after exposure to nicotine in adulthood only. Our findings suggest that Lypd6 is a versatile inhibitor of cholinergic signaling in the brain, and that Lypd6 is dysregulated by nicotine exposure during early development. Regulatory proteins of the Lynx family modulate the function of nicotinic receptors (nAChRs). We report for the first time that the Lynx protein Lypd6 binds to nAChRs in human brain extracts, and that recombinant Lypd6 decreases nicotine-induced ERK phosphorylation and attenuates nicotine-induced hippocampal inward currents. Our findings suggest that Lypd6 is a versatile inhibitor of cholinergic signaling in the brain.
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Affiliation(s)
- Maria Arvaniti
- Department of Drug Design & Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Majbrit M Jensen
- Neurobiology Research Unit, University Hospital Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Neeraj Soni
- Department of Drug Design & Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Hong Wang
- Laboratory for Neurodevelopment, Department of Anatomy, Howard University College of Medicine, Washington, District of Columbia, USA
| | - Anders B Klein
- Department of Drug Design & Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Nathalie Thiriet
- Laboratory of Experimental and Clinical Neurosciences, University of Poitiers, Poitiers, France
| | - Lars H Pinborg
- Neurobiology Research Unit, University Hospital Copenhagen, Rigshospitalet, Copenhagen, Denmark.,Epilepsy Clinic, University Hospital Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Pretal P Muldoon
- Department of Pharmacology and Toxicology, Medical College of Virginia, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Jacob Wienecke
- Department of Nutrition, Exercise and Sport & Department of Neuroscience and Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - M Imad Damaj
- Department of Pharmacology and Toxicology, Medical College of Virginia, Virginia Commonwealth University, Richmond, Virginia, USA
| | - Kristi A Kohlmeier
- Department of Drug Design & Pharmacology, University of Copenhagen, Copenhagen, Denmark
| | - Marjorie C Gondré-Lewis
- Laboratory for Neurodevelopment, Department of Anatomy, Howard University College of Medicine, Washington, District of Columbia, USA
| | - Jens D Mikkelsen
- Neurobiology Research Unit, University Hospital Copenhagen, Rigshospitalet, Copenhagen, Denmark
| | - Morten S Thomsen
- Department of Drug Design & Pharmacology, University of Copenhagen, Copenhagen, Denmark. .,Neurobiology Research Unit, University Hospital Copenhagen, Rigshospitalet, Copenhagen, Denmark.
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GCN5 modulates osteogenic differentiation of periodontal ligament stem cells through DKK1 acetylation in inflammatory microenvironment. Sci Rep 2016; 6:26542. [PMID: 27216891 PMCID: PMC4877597 DOI: 10.1038/srep26542] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2015] [Accepted: 05/04/2016] [Indexed: 12/21/2022] Open
Abstract
Periodontal ligament stem cells (PDLSCs) from periodontitis patients showed defective osteogenic differentiation. However, the mechanism of impaired osteogenic differentiation of PDLSCs in inflammatory microenvironments is still unclear. In this study, we found that inflammation in the microenvironment resulted in downregulation of histone acetyltransferase GCN5 expression and lack of GCN5 caused decreased osteogenic differentiation of PDLSCs. Previous study showed activated Wnt/β-cateinin pathway of PDLSCs resulted in defective osteogenic differentiation. Here we found knockdown of GCN5 decreased the expression of DKK1, an inhibitor of Wnt/β-cateinin pathway, thus activated Wnt/β-catenin pathway of PDLSCs. Mechanistically, GCN5 regulated DKK1 expression by acetylation of Histone H3 lysine 9 (H3K9) and Histone H3 lysine 14 (H3K14) at its promoter region. Interestingly, we found that in vivo injection of aspirin rescued the periodontitis of rats through inhibiting inflammation and upregulating GCN5 expression. Furthermore, aspirin treatment of PDLSCs upregulated GCN5 expression and increased osteogenic differentiation of PDLSCs. In conclusion, GCN5 plays a protective role in periodontitis through acetylation of DKK1 and applying drugs targeting GCN5, such as aspirin, could be a new approach for periodontitis treatment.
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M. Carballosa C, M. Greenberg J, S. Cheung H. Expression and function of nicotinic acetylcholine receptors in stem cells. AIMS BIOENGINEERING 2016. [DOI: 10.3934/bioeng.2016.3.245] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023] Open
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Abstract
Regenerative medicine using patient's own stem cells (SCs) to repair dysfunctional tissues is an attractive approach to complement surgical and pharmacological treatments for aging and degenerative disorders. Recently, dental SCs have drawn much attention owing to their accessibility, plasticity and applicability for regenerative use not only for dental, but also other body tissues. In ophthalmology, there has been increasing interest to differentiate dental pulp SC and periodontal ligament SC (PDLSC) towards ocular lineage. Both can commit to retinal fate expressing eye field transcription factors and generate rhodopsin-positive photoreceptor-like cells. This proposes a novel therapeutic alternative for retinal degeneration diseases. Moreover, as PDLSC shares similar cranial neural crest origin and proteoglycan secretion with corneal stromal keratoctyes and corneal endothelial cells, this offers the possibility of differentiating PDLSC to these corneal cell types. The advance could lead to a shift in the medical management of corneal opacities and endothelial disorders from highly invasive corneal transplantation using limited donor tissue to cell therapy utilizing autologous cells. This article provides an overview of dental SC research and the perspective of utilizing dental SCs for ocular regenerative medicine.
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Zablotni A, Dakischew O, Trinkaus K, Hartmann S, Szalay G, Heiss C, Lips KS. Regulation of acetylcholine receptors during differentiation of bone mesenchymal stem cells harvested from human reaming debris. Int Immunopharmacol 2015. [DOI: 10.1016/j.intimp.2015.07.021] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Kang SW, Ban J, Kim JH, Lee CH. Altered gene expression in gingival tissues of the ligature-induced periodontitis rat model. Mol Cell Toxicol 2015. [DOI: 10.1007/s13273-015-0025-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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35
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Jiang DQ, Wei MD, Wang KW, Lan YX, Zhu N, Wang Y. Nicotine contributes to the neural stem cells fate against toxicity of microglial-derived factors induced by Aβ via the Wnt/β-catenin pathway. Int J Neurosci 2015; 126:257-68. [PMID: 26001208 DOI: 10.3109/00207454.2015.1008696] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Recent studies have demonstrated that the molecules secreted from microglias play important roles in the cell fate determination of neural stem cells (NSCs), and nicotinic acetylcholine receptor agonist treatment could reduce neuroinflammation in some neurodegenerative disease models, such as Alzheimer's disease (AD). However, it is not clear how nicotine plays a neuroprotective role in inflammation-mediated central nervous diseases, and its possible mechanisms in the process remain largely elusive. The aim of this study is to improve the survival microenvironment of NSCs co-cultured with microglias in vitro by weakening inflammation that mediated by accumulation of β-amyloid peptide (Aβ). The viability, proliferation, differentiation, apoptosis of NSCs and underlying mechanisms associated with Wnt signaling pathway were investigated. The results showed that Aβ could directly damage NSCs. Furthermore, concomitant to elevated levels of TNF-α, IL-1β derived from microglias, the NSCs had been damaged more severely with the upregulation of Axin 2, p-β-catenin and the downregulation of β-catenin, p-GSK-3β, microtubule-associated protein-2, choline acetyltransferase. However, addition of 10 μmol/L nicotine before microglias treated with Aβ was beneficial to protect the NSCs against neurotoxicity of microglial-derived factors induced by Aβ, which partially rescued proliferation, differentiation and inhibited apoptosis of NSCs via activation of Wnt/β-catenin pathway. Taken together, these data imply that low concentration nicotine attenuates NSCs injury induced by microglial-derived factors via Wnt signaling pathway. Thus, treatment with nicotinic acetylcholine receptor agonist provides a promising research field for neural stem cell fate and therapeutic intervention in neuroinflammation diseases.
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Affiliation(s)
- De-Qi Jiang
- a Department of Pharmacy , Zhujiang Hospital of Southern Medical University , Guangzhou , China.,b Department of Biopharmaceutical , Yulin Normal University , Yulin , China
| | - Mei-Dan Wei
- c Department of Pharmacy , the Third Affiliated Hospital of Southern Medical University , Guangzhou , China
| | - Ke-Wan Wang
- d Department of Neurosurgery , Nanfang Hospital of Southern Medical University , Guangzhou , China
| | - Yan-Xian Lan
- a Department of Pharmacy , Zhujiang Hospital of Southern Medical University , Guangzhou , China
| | - Ning Zhu
- a Department of Pharmacy , Zhujiang Hospital of Southern Medical University , Guangzhou , China
| | - Yong Wang
- a Department of Pharmacy , Zhujiang Hospital of Southern Medical University , Guangzhou , China
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Cigarette smoking hinders human periodontal ligament-derived stem cell proliferation, migration and differentiation potentials. Sci Rep 2015; 5:7828. [PMID: 25591783 PMCID: PMC5379007 DOI: 10.1038/srep07828] [Citation(s) in RCA: 62] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2014] [Accepted: 12/15/2014] [Indexed: 12/16/2022] Open
Abstract
Cigarette smoking contributes to the development of destructive periodontal diseases and delays its healing process. Our previous study demonstrated that nicotine, a major constituent in the cigarette smoke, inhibits the regenerative potentials of human periodontal ligament-derived stem cells (PDLSC) through microRNA (miRNA) regulation. In this study, we hypothesized that the delayed healing in cigarette smokers is caused by the afflicted regenerative potential of smoker PDLSC. We cultured PDLSC from teeth extracted from smokers and non-smokers. In smoker PDLSC, we found significantly reduced proliferation rate and retarded migration capabilities. Moreover, alkaline phosphatase activity, calcium deposition and acidic polysaccharide staining were reduced after BMP2-induced differentiation. In contrast, more lipid deposition was observed in adipogenic-induced smoker PDLSC. Furthermore, two nicotine-related miRNAs, hsa-miR-1305 (22.08 folds, p = 0.040) and hsa-miR-18b (15.56 folds, p = 0.018), were significantly upregulated in smoker PDLSC, suggesting these miRNAs might play an important role in the deteriorative effects on stem cells by cigarette smoke. Results of this study provide further evidences that cigarette smoking affects the regenerative potentials of human adult stem cells.
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