1
|
Wang W, Sun DF, Cui HX, Zhang WL. The nano-artificial periosteum made of PCL/MgO/AS-IV enhances MC3T3-E1 cell osteogenic differentiation and promotes bone defect repair via the EphB4/EphrinB2 signaling pathway. Heliyon 2024; 10:e32036. [PMID: 38882277 PMCID: PMC11176840 DOI: 10.1016/j.heliyon.2024.e32036] [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: 01/29/2024] [Revised: 05/03/2024] [Accepted: 05/27/2024] [Indexed: 06/18/2024] Open
Abstract
Bone regeneration plays a pivotal role in periodontal tissue repair. With advancements in biotechnology materials, the utilization of nanotechnology offers a reliable platform for bone restoration in periodontitis. In this study, we successfully established a long-term bacterial infection model using Porphyromonas gingivalis (P. gingivalis) with MOI = 50. CCK-8 and ROS immunofluorescence results demonstrated that the combined effect of Mg2+ and AS-IV significantly enhanced cell proliferation and effectively suppressed the inflammatory response during bacterial infection. Alkaline phosphatase and alizarin red staining revealed that the synergistic action of Mg2+ and AS-IV notably promoted osteogenic differentiation of MC3T3-E1 cells under P. gingivalis-infected conditions. Considering the properties of these two biomaterials, we fabricated polycaprolactone (PCL) artificial periosteum loaded with MgO and AS-IV using an electrostatic spinning technique. The findings indicated that PCL/MgO/AS-IV artificial periosteum exhibited excellent biocompatibility and hydrophilicity, thereby substantially enhancing cellular adhesion to its surface as well as augmenting cellular value-added rate. Moreover, efficient drug release from the PCL/MgO/AS-IV artificial bone membrane conferred remarkable antimicrobial activity along with in vitro osteogenic potentiality. The in vivo experiments conducted on animals further substantiated the exceptional properties exhibited by PCL/MgO/AS-IV artificial periosteum in bone defect repair. Additionally, it was observed that PCL/MgO/AS-IV artificial periosteum could modulate EphB4-EphrinB2 signaling to enhance osteogenic differentiation under P.gingivalis-infected conditions.This exciting outcome suggests that PCL/MgO/AS-IV artificial periosteum holds great promise as a biomaterial for treating periodontal bone loss.
Collapse
Affiliation(s)
- Wei Wang
- North Jiangsu Health Management Center of Zhongshan Hospital Affiliated to Fudan University, Yancheng, 224100, China
| | - Dan-Fang Sun
- Jinzhou Medical University, Jinzhou, 121000, China
| | - Hui-Xia Cui
- The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), 241004, Wuhu, China
| | - Wen-Lu Zhang
- The First Affiliated Hospital of Wannan Medical College (Yijishan Hospital), 241004, Wuhu, China
| |
Collapse
|
2
|
Wei P, Wang N, Zhang Q, Wang W, Sun H, Liu Z, Yan T, Wang Q, Qiu L. Nano-ZnO-modified hydroxyapatite whiskers with enhanced osteoinductivity for bone defect repair. Regen Biomater 2024; 11:rbae051. [PMID: 38854679 PMCID: PMC11162197 DOI: 10.1093/rb/rbae051] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2024] [Revised: 04/01/2024] [Accepted: 04/15/2024] [Indexed: 06/11/2024] Open
Abstract
Hydroxyapatite (HA) whisker (HAw) represents a distinct form of HA characterized by its high aspect ratio, offering significant potential for enhancing the mechanical properties of bone tissue engineering scaffolds. However, the limited osteoinductivity of HAw hampers its widespread application. In this investigation, we observed HAw-punctured osteoblast membranes and infiltrated the cell body, resulting in mechanical damage to cells that adversely impacted osteoblast proliferation and differentiation. To address this challenge, we developed nano-zinc oxide particle-modified HAw (nano-ZnO/HAw). Acting as a reinforcing and toughening agent, nano-ZnO/HAw augmented the compressive strength and ductility of the matrix materials. At the same time, the surface modification with nano-ZnO particles improved osteoblast differentiation by reducing the mechanical damage from HAw to cells and releasing zinc ion, the two aspects collectively promoted the osteoinductivity of HAw. Encouragingly, the osteoinductive potential of 5% nano-ZnO/HAw and 10% nano-ZnO/HAw was validated in relevant rat models, demonstrating the efficacy of this approach in promoting new bone formation in vivo. Our findings underscore the role of nano-ZnO particle surface modification in enhancing the osteoinductivity of HAw from a physical standpoint, offering valuable insights into the development of bone substitutes with favorable osteoinductive properties while simultaneously bolstering matrix material strength and toughness.
Collapse
Affiliation(s)
- Penggong Wei
- School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
- Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
| | - Ning Wang
- Department of Plastic Surgery, The First Hospital of China Medical University, China Medical University, Shenyang 110001, China
| | - Qiyue Zhang
- School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
- Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
| | - Wanfeng Wang
- School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
- Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
| | - Hui Sun
- School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
- Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
| | - Zengqian Liu
- Shi-Changxu Innovation Center for Advanced Materials, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, China
| | - Tingting Yan
- Faculty of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
| | - Qiang Wang
- School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
- Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
| | - Lihong Qiu
- School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
- Liaoning Provincial Key Laboratory of Oral Diseases, Shenyang 110002, China
| |
Collapse
|
3
|
Fu Y, Zhang S, Liu J, Lu Z, Li Y, Liu J, Pan Y. Imbalanced EphB4/EphrinB2 Signaling Modulates Bone Resorption in Periodontitis Induced by Porphyromonas gingivalis. ACS Infect Dis 2024; 10:1152-1161. [PMID: 38442009 DOI: 10.1021/acsinfecdis.3c00459] [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] [Indexed: 03/07/2024]
Abstract
Periodontitis, a chronic infectious disease in periodontal tissues, is characterized by an imbalance of alveolar bone resorption and remodeling, which eventually results in tooth loosening and even tooth loss. The etiology of periodontitis is polymicrobial synergy and dysbiosis, in which Porphyromonas gingivalis (P. gingivalis) is one of the primary pathogens responsible for periodontitis progression. The interplay of EphrinB2/EphB4 is crucial for osteoblast-osteoclast communication during bone remodeling and healing. This study investigates the mechanism of EphB4/EphrinB2 transduction modulating osteogenesis inhibition and bone resorption in periodontitis induced by P. gingivalis. An in vivo model of chronic periodontitis provoked by P. gingivalis was constructed, the inflammation and bone resorption were evaluated. The expression of EphB4 and EphrinB2 proteins in periodontal tissues was detected, which was also evaluated, respectively, in osteoblasts and osteoclasts infected with P. gingivalis in vitro. Then, a simulated coculture model of osteoblasts and osteoclasts was established to activate the forward and reverse pathways of EphB4/EphrinB2 with P. gingivalis infection. This study showed that P. gingivalis infection promoted alveolar bone resorption in rats and enhanced EphB4 and EphrinB2 expression in periodontal tissues. EphB4 and molecules associated with osteogenesis in osteoblasts infected with P. gingivalis were inhibited, while EphrinB2 and osteoclast differentiation-related markers in osteoclasts were activated. In conclusion, this study suggested that EphB4/EphrinB2 proteins were involved in alveolar bone remodeling in the process of periodontitis induced by P. gingivalis infection. Moreover, attenuated EphB4/EphrinB2 with P. gingivalis infection weakened osteoblast activity and enhanced osteoclast activity.
Collapse
Affiliation(s)
- Ying Fu
- Oral Medicine Department, The Second Affiliated Hospital of Jinzhou Medical University, Jinzhou 121000, China
| | - Shuwei Zhang
- Department of Periodontics, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
| | - Junchao Liu
- Department of Periodontics, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
| | - Ze Lu
- Department of Periodontics, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
| | - Yuchao Li
- Department of Periodontics, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
| | - Jinwen Liu
- Department of Periodontics, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
| | - Yaping Pan
- Department of Periodontics, Liaoning Provincial Key Laboratory of Oral Diseases, School and Hospital of Stomatology, China Medical University, Shenyang 110002, China
| |
Collapse
|
4
|
Luo S, Xu T, Zheng Q, Jiang A, Zhao J, Ying Y, Liu N, Pan Y, Zhang D. Mitochondria: An Emerging Unavoidable Link in the Pathogenesis of Periodontitis Caused by Porphyromonas gingivalis. Int J Mol Sci 2024; 25:737. [PMID: 38255811 PMCID: PMC10815845 DOI: 10.3390/ijms25020737] [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: 11/30/2023] [Revised: 01/02/2024] [Accepted: 01/04/2024] [Indexed: 01/24/2024] Open
Abstract
Porphyromonas gingivalis (P. gingivalis) is a key pathogen of periodontitis. Increasing evidence shows that P. gingivalis signals to mitochondria in periodontal cells, including gingival epithelial cells, gingival fibroblast cells, immune cells, etc. Mitochondrial dysfunction affects the cellular state and participates in periodontal inflammatory response through the aberrant release of mitochondrial contents. In the current review, it was summarized that P. gingivalis induced mitochondrial dysfunction by altering the mitochondrial metabolic state, unbalancing mitochondrial quality control, prompting mitochondrial reactive oxygen species (ROS) production, and regulating mitochondria-mediated apoptosis. This review outlines the impacts of P. gingivalis and its virulence factors on the mitochondrial function of periodontal cells and their role in periodontitis.
Collapse
Affiliation(s)
- Shiyin Luo
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Tong Xu
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Qifan Zheng
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Aijia Jiang
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Jiahui Zhao
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Yue Ying
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Nan Liu
- Department of Periodontics, School of Stomatology, China Medical University, Shenyang 110002, China; (S.L.); (T.X.); (Q.Z.); (A.J.); (J.Z.); (Y.Y.); (N.L.)
| | - Yaping Pan
- Department of Periodontics and Oral Biology, School of Stomatology, China Medical University, Shenyang 110002, China;
| | - Dongmei Zhang
- Department of Periodontics and Oral Biology, School of Stomatology, China Medical University, Shenyang 110002, China;
| |
Collapse
|
5
|
Eggers B, Stope MB, Marciniak J, Mustea A, Eick S, Deschner J, Nokhbehsaim M, Kramer FJ. Non-Invasive Physical Plasma Reduces the Inflammatory Response in Microbially Prestimulated Human Gingival Fibroblasts. Int J Mol Sci 2023; 24:16156. [PMID: 38003346 PMCID: PMC10671174 DOI: 10.3390/ijms242216156] [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: 10/21/2023] [Revised: 11/04/2023] [Accepted: 11/07/2023] [Indexed: 11/26/2023] Open
Abstract
Non-invasive physical plasma (NIPP), an electrically conductive gas, is playing an increasingly important role in medicine due to its antimicrobial and regenerative properties. However, NIPP is not yet well established in dentistry, although it has promising potential, especially for periodontological applications. The aim of the present study was to investigate the effect of NIPP on a commercially available human gingival fibroblast (HGF) cell line and primary HGFs in the presence of periodontitis-associated bacteria. First, primary HGFs from eight patients were characterised by immunofluorescence, and cell numbers were examined by an automatic cell counter over 5 days. Then, HGFs that were preincubated with Fusobacterium nucleatum (F.n.) were treated with NIPP. Afterwards, the IL-6 and IL-8 levels in the cell supernatants were determined by ELISA. In HGFs, F.n. caused a significant increase in IL-6 and IL-8, and this F.n.-induced upregulation of both cytokines was counteracted by NIPP, suggesting a beneficial effect of physical plasma on periodontal cells in a microbial environment. The application of NIPP in periodontal therapy could therefore represent a novel and promising strategy and deserves further investigation.
Collapse
Affiliation(s)
- Benedikt Eggers
- Department of Oral, Maxillofacial and Plastic Surgery, University Hospital Bonn, 53111 Bonn, Germany;
| | - Matthias Bernhard Stope
- Department of Gynecology and Gynecological Oncology, University Hospital Bonn, 53127 Bonn, Germany; (M.B.S.); (A.M.)
| | - Jana Marciniak
- Department of Orthodontics, University Hospital Bonn, 53111 Bonn, Germany;
| | - Alexander Mustea
- Department of Gynecology and Gynecological Oncology, University Hospital Bonn, 53127 Bonn, Germany; (M.B.S.); (A.M.)
| | - Sigrun Eick
- Department of Periodontology, School of Dental Medicine, University of Bern, 3010 Bern, Switzerland;
| | - James Deschner
- Department of Periodontology and Operative Dentistry, University Medical Center of the Johannes Gutenberg University, 55131 Mainz, Germany;
| | - Marjan Nokhbehsaim
- Section of Experimental Dento-Maxillo-Facial Medicine, University Hospital Bonn, 53111 Bonn, Germany;
| | - Franz-Josef Kramer
- Department of Oral, Maxillofacial and Plastic Surgery, University Hospital Bonn, 53111 Bonn, Germany;
| |
Collapse
|
6
|
Huang X, Xiao J, Wang X, Cao Z. Irisin attenuates P. gingivalis-suppressed osteogenic/cementogenic differentiation of periodontal ligament cells via p38 signaling pathway. Biochem Biophys Res Commun 2022; 618:100-106. [PMID: 35716593 DOI: 10.1016/j.bbrc.2022.06.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2022] [Accepted: 06/01/2022] [Indexed: 12/12/2022]
Abstract
Regeneration of periodontal hard tissues damaged by Porphyromonas gingivalis (P. gingivalis) is essential for tooth stability and dental health. Irisin, a myokine secreted by skeletal muscle, is involved in different biological processes, such as myogenesis, adipogenesis, neurogenesis and osteogenesis. However, whether irisin regulates the osteogenic/cementogenic differentiation of human periodontal ligament cell (hPDLCs), especially under P. gingivalis-triggered inflammation, remains unknown. In this study, we verified the suppression role of P. gingivalis in the osteogenic/cementogenic differentiation of hPDLCs. Also, compared with the control cells, hPDLCs with irisin stimulation showed higher expression of osteogenic-/cementogenic-related markers, ALP activity and mineralization ability, as measured by RT-qPCR, western blotting, ALP staining and Alizarin red staining, respectively. Moreover, the osteogenic/cementogenic differentiation-facilitating role of irisin was also demonstrated under P. gingivalis-elicited inflammation, which implied a rescue function of irisin in P. gingivalis-suppressed hPDLC differentiation. Finally, the underlying mechanism involved in the process was explored. We observed that the p38 signaling pathway was activated during irisin-accelerated hPDLC differentiation. Furthermore, hPDLC differentiation was weakened after the p38 inhibitor was applied. In summary, we found that irisin can facilitate the osteogenic/cementogenic differentiation of hPDLCs partially through the p38 signaling pathway, which may provide evidence for the regeneration of P. gingivalis-destroyed periodontal hard tissues.
Collapse
Affiliation(s)
- Xin Huang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST KLOS) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBME), School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Junhong Xiao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST KLOS) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBME), School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Xiaoxuan Wang
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST KLOS) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBME), School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan, China
| | - Zhengguo Cao
- The State Key Laboratory Breeding Base of Basic Science of Stomatology (Hubei-MOST KLOS) & Key Laboratory of Oral Biomedicine Ministry of Education (KLOBME), School & Hospital of Stomatology, Wuhan University, Wuhan, China; Department of Periodontology, School & Hospital of Stomatology, Wuhan University, Wuhan, China.
| |
Collapse
|
7
|
Groeger S, Hudel M, Zechel S, Chakraborty T, Lochnit G, Meyle J, Domann E. Generation and functional characterization of recombinant Porphyromonas gingivalis W83 FimA. J Biotechnol 2021; 340:22-29. [PMID: 34478774 DOI: 10.1016/j.jbiotec.2021.08.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2020] [Revised: 06/07/2021] [Accepted: 08/17/2021] [Indexed: 01/04/2023]
Abstract
Porphyromonas gingivalis (P. gingivalis) is regarded as a keystone pathogen in destructive periodontal diseases. It expresses a variety of virulence factors, amongst them fimbriae that are involved in colonization, invasion, establishment and persistence of the bacteria inside the host cells. The fimbriae also were demonstrated to affect the host immune-response mechanisms. The major fimbriae are able to bind specifically to different host cells, amongst them peripheral blood monocytes. The interaction of these cells with fimbriae induces release of cytokines such as interleukin-1 (IL-1), IL-6, and tumor necrosis factor-α (TNF-α). The aim of this study was to generate recombinant major FimA protein from P. gingivalis W83 fimbriae and to prove its biological activity. FimA of P. gingivalis W83 was amplified from chromosomal DNA, cloned in a vector and transferred into Listeria innocua. (L. innocua).The expressed protein was harvested and purified using FPLC via a His trap HP column. The identity and purity was demonstrated by gel-electrophoresis and mass-spectrometry. The biological activity was assessed by stimulation of human oral epithelial cells and peripheral blood monocytes with the protein and afterwards cytokines in the supernatants were quantified by enzyme linked immunosorbent assay (ELISA) and cytometric bead array. Recombinant FimA could successfully be generated and purified. Gel-electrophoresis and mass-spectrometry confirmed that the detected sequences are identical with FimA. Stimulation of human monocytes induced the release of high concentrations of IL-1β, IL-6, IL-10 and TNF-α by these cells. In conclusion, a recombinant FimA protein was established and its biological activity was proven. This protein may serve as a promising agent for further investigation of its role in periodontitis and possible new therapeutic approaches.
Collapse
Affiliation(s)
- S Groeger
- Department of Periodontology, Justus-Liebig-University of Giessen, Germany.
| | - M Hudel
- Institute of Medical Microbiology, Justus-Liebig-University of Giessen, Germany
| | - S Zechel
- Institute of Medical Microbiology, Justus-Liebig-University of Giessen, Germany
| | - T Chakraborty
- Institute of Medical Microbiology, Justus-Liebig-University of Giessen, Germany
| | - G Lochnit
- Department of Biochemistry, Justus-Liebig-University of Giessen, Germany
| | - J Meyle
- Department of Periodontology, Justus-Liebig-University of Giessen, Germany
| | - E Domann
- Institute of Medical Microbiology, Justus-Liebig-University of Giessen, Germany
| |
Collapse
|
8
|
Mu W, Jia Y, Chen X, Li H, Wang Z, Cheng B. Intracellular Porphyromonas gingivalis Promotes the Proliferation of Colorectal Cancer Cells via the MAPK/ERK Signaling Pathway. Front Cell Infect Microbiol 2020; 10:584798. [PMID: 33425779 PMCID: PMC7785964 DOI: 10.3389/fcimb.2020.584798] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2020] [Accepted: 11/20/2020] [Indexed: 12/11/2022] Open
Abstract
Porphyromonas gingivalis (P. gingivalis) is a keystone pathogen in periodontitis. However, several clinical studies have revealed an enrichment of P. gingivalis in the stool samples and colorectal mucosa of colorectal cancer patients. Thus, the goal of this study was to determine whether P. gingivalis can promote colorectal cancer progression in vitro. We established an acute infection model (24 h, multiplicity of infection =100) of P. gingivalis invasion of colorectal cancer cells to study the alterations induced by P. gingivalis in the proliferation and cell cycle of colorectal cancer cells. We observed that P. gingivalis can adhere and invade host cells a few hours after infection. Once invaded, P. gingivalis significantly promoted colorectal cancer cell proliferation, and the percentage of S phase cells was increased in the cell cycle assay. However, KDP136, a gingipain-deficient mutant of P. gingivalis 33277, showed a decreased ability to promote colorectal cancer cell proliferation, indicating that gingipain is associated with colorectal cancer cell proliferation. Furthermore, we extracted RNA from colorectal cancer cells for high-throughput sequencing analysis and reconfirmed the results by quantitative polymerase chain reaction and western blot analyses. The results suggested that the MAPK/ERK signaling pathway is significantly activated by P. gingivalis, while these changes were not observed for KDP136. In conclusion, P. gingivalis can invade cells and promote the proliferation of colorectal cancer cells by activating the MAPK/ERK signaling pathway. Gingipain is an essential virulence factor in this interaction.
Collapse
Affiliation(s)
- Wenxin Mu
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Yiqun Jia
- Stomatology Center, Shenzhen People's Hospital, The Second Clinical Medical College of Jinan University, The First Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China
| | - Xiaobing Chen
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Haoyu Li
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Zhi Wang
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
| | - Bin Cheng
- Hospital of Stomatology, Guanghua School of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-Sen University, Guangzhou, China
| |
Collapse
|
9
|
Gao H, Sun T, Yang F, Yuan J, Yang M, Kang W, Tang D, Zhang J, Feng Q. The Pathogenic Effects of Fusobacterium nucleatum on the Proliferation, Osteogenic Differentiation, and Transcriptome of Osteoblasts. Front Cell Dev Biol 2020; 8:807. [PMID: 33042984 PMCID: PMC7517582 DOI: 10.3389/fcell.2020.00807] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2020] [Accepted: 07/31/2020] [Indexed: 12/11/2022] Open
Abstract
As one of the most common oral diseases, periodontitis is closely correlated with tooth loss in middle-aged and elderly people. Fusobacterium nucleatum (F. nucleatum) contributes to periodontitis, but the evidence in alveolar bone loss is still unclear. In this study, cytological experiments and transcriptome analyses were performed to characterize the biological process abnormalities and the molecular changes of F. nucleatum-stimulated osteoblasts. F. nucleatum could inhibit cell proliferation, promote cell apoptosis, and elevate pro-inflammatory cytokine production of osteoblasts, and it also inhibited osteoblast differentiation and mineralized nodule formation and decreased the expression of osteogenetic genes and proteins. Whole-transcriptome analyses identified a total of 235 transcripts that were differentially expressed in all six time points, most of which were inflammation-related genes. The genes, Ccl2, Ccl20, Csf1, Cx3cl1, Cxcl1, Cxcl3, Il6, Birc3, Map3k8, Nos2, Nfkb2, Tnfrsf1b, and Vcam1, played core roles in a PPI network, and interacted closely with other ones in the infection. In addition, 133 osteogenesis-related differential expression genes (DEGs) were time-serially dynamically changed in a short time-series expression miner (STEM) analysis, which were enriched in multiple cancer-related pathways. The core dynamic DEGs (Mnda, Cyp1b1, Comp, Phex, Mmp3, Tnfrsf1b, Fbln5, and Nfkb2) had been reported to be closely related to the development and metastasis in tumor and cancer progress. This study is the first to evaluate the long-term interaction of F. nucleatum on osteoblasts, which might increase the risk of cell carcinogenesis of normal osteoblasts, and provides new insight into the pathogenesis of bacterial-induced bone destruction.
Collapse
Affiliation(s)
- Hui Gao
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,Department of Human Microbiome, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,Department of Stomatology, Weifang People's Hospital, Weifang, China
| | - Tianyong Sun
- Department of Human Microbiome, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Fanghong Yang
- Department of Stomatology, Weifang People's Hospital, Weifang, China
| | - Jiakan Yuan
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,Department of Stomatology, Heze Municipal Hospital, Heze, China
| | - Mei Yang
- Department of General Dentistry, Qingdao Stomatological Hospital, Qingdao, China
| | - Wenyan Kang
- Department of Human Microbiome, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,Department of Periodontology, School of Stomatology, Shandong University, Jinan, China
| | - Di Tang
- Department of Human Microbiome, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Jun Zhang
- Department of Orthodontics, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China
| | - Qiang Feng
- Department of Human Microbiome, School and Hospital of Stomatology, Cheeloo College of Medicine, Shandong University and Shandong Key Laboratory of Oral Tissue Regeneration and Shandong Engineering Laboratory for Dental Materials and Oral Tissue Regeneration, Jinan, China.,State Key Laboratory of Microbial Technology, Shandong University, Qingdao, China
| |
Collapse
|
10
|
Khammissa RAG, Ballyram R, Jadwat Y, Fourie J, Lemmer J, Feller L. Vitamin D Deficiency as It Relates to Oral Immunity and Chronic Periodontitis. Int J Dent 2018; 2018:7315797. [PMID: 30364037 PMCID: PMC6188726 DOI: 10.1155/2018/7315797] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Accepted: 08/12/2018] [Indexed: 11/17/2022] Open
Abstract
The biologically active form of vitamin D, 1,25 dihydroxyvitamin D (1,25(OH)2D) and its receptor, the vitamin D receptor (VDR), play roles in maintaining oral immunity and the integrity of the periodontium. Results of observational cross-sectional clinical studies investigating the association between vitamin D serum level and the incidence and severity of chronic periodontitis indicate that, perhaps owing to the immunomodulatory, anti-inflammatory, and antibacterial properties of 1,25(OH)2 D/VDR signalling, a sufficient serum level of vitamin D is necessary for the maintenance of periodontal health. In cases of established chronic periodontitis, vitamin D supplementation is associated with reduction in the severity of periodontitis. As cross-sectional studies provide only weak evidence for any causal association and therefore are of questionable value, either longitudinal cohort studies, case controlled studies, or randomized control trials are needed to determine whether or not deficiency of vitamin D is a risk factor for chronic periodontitis, and whether or not vitamin D supplementation adjunctive to standard periodontal treatment is in any way beneficial. In this article, we discuss the relationship between vitamin D, oral immunity and periodontal disease and review the rationale for using vitamin D supplementation to help maintain periodontal health and as an adjunct to standard periodontal treatment.
Collapse
Affiliation(s)
- R. A. G. Khammissa
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| | - R. Ballyram
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| | - Y. Jadwat
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| | - J. Fourie
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| | - J. Lemmer
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| | - L. Feller
- Department of Periodontology and Oral Medicine, Sefako Makgatho Health Sciences University, Medunsa 0204, South Africa
| |
Collapse
|
11
|
Muniz FWMG, Montagner F, Jacinto RC, Rösing CK, Gomes BPFA. Correlation between crestal alveolar bone loss with intracanal bacteria and apical lesion area in necrotic teeth. Arch Oral Biol 2018; 95:1-6. [PMID: 30025275 DOI: 10.1016/j.archoralbio.2018.07.007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Revised: 06/14/2018] [Accepted: 07/10/2018] [Indexed: 12/31/2022]
Abstract
OBJECTIVE This study aimed to analyze the correlation between crestal alveolar bone loss with the presence of some bacterial species in root canals and the apical lesion area of necrotic teeth. DESIGN Data from 20 patients with diagnosis of pulp necrosis and acute apical abscesses, without active periodontal diseases, were evaluated. Patients with history of antibiotic usage three months prior to the study, with exposed pulp cavity, and with probing depth >3 mm were not included. The root size, the distance between the bone crest to the tooth apex in the mesial and distal surfaces, and the apical lesion area were measured from standard periapical radiographies by a calibrated examiner. Root canal samples were collected using sterilized paper points. In multirooted teeth, the largest root canal was sampled. Culture, microbial isolation and identification by phenotypic methods were performed. Spearman correlation and exact Fischer test were calculated between higher/lower existing bone crests, according to the median and the presence of specific bacteria. RESULTS No statistically significant differences were found between occurrence of pathogenic bacteria, such as Porphyromonas gingivalis, Porphyromonas endodontalis, and Prevotella intermedia, and groups with higher/lower degree of bone loss (p > 0.05). A negative significant correlation was found between Parvimonas micra and periodontal bone loss (p = 0.02). Additionally, no statistically significant association was found between crestal bone loss and the apical lesion area. CONCLUSIONS It was concluded that, in patients without active periodontitis, the presence of pathogenic bacteria in the root canal was not correlated with periodontal bone loss.
Collapse
Affiliation(s)
- Francisco Wilker M G Muniz
- Department of Periodontology, Faculty of Dentistry, Federal University of Pelotas, Rua Gonçalves Chaves, 457, Pelotas, RS, 96015-560, Brazil.
| | - Francisco Montagner
- Department of Endodontics, Faculty of Dentistry, Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2492, Porto Alegre, RS, 90035-003, Brazil.
| | - Rogério C Jacinto
- Department of Endodontics, Araçatuba Dental School, State University of São Paulo, Rua José Bonifácio, 1193, Araçatuba, São Paulo, 16015-050, Brazil.
| | - Cassiano K Rösing
- Department of Periodontology, Faculty of Dentistry, Federal University of Rio Grande do Sul, Rua Ramiro Barcelos, 2492, Porto Alegre, RS, 90035-003, Brazil.
| | - Brenda P F A Gomes
- Department of Restorative Dentistry, Division of Endodontics, Piracicaba Dental School, State University of Campinas - UNICAMP, Avenida Limeira, 901, Piracicaba, SP, 13414-903, Brazil.
| |
Collapse
|
12
|
Jang JY, Baek KJ, Choi Y, Ji S. Relatively low invasive capacity of Porphyromonas gingivalis strains into human gingival fibroblasts in vitro. Arch Oral Biol 2017; 83:265-271. [DOI: 10.1016/j.archoralbio.2017.08.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2017] [Revised: 08/09/2017] [Accepted: 08/10/2017] [Indexed: 01/28/2023]
|
13
|
Cantley MD, Zannettino ACW, Bartold PM, Fairlie DP, Haynes DR. Histone deacetylases (HDAC) in physiological and pathological bone remodelling. Bone 2017; 95:162-174. [PMID: 27913271 DOI: 10.1016/j.bone.2016.11.028] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Revised: 10/31/2016] [Accepted: 11/28/2016] [Indexed: 11/21/2022]
Abstract
Histone deacetylases (HDACs)2 play important roles in the epigenetic regulation of gene expression in cells and are emerging therapeutic targets for treating a wide range of diseases. HDAC inhibitors (HDACi)3 that act on multiple HDAC enzymes have been used clinically to treat a number of solid and hematological malignancies. HDACi are also currently being studied for their efficacy in non-malignant diseases, including pathologic bone loss, but this has necessitated a better understanding of the roles of individual HDAC enzymes, particularly the eleven zinc-containing isozymes. Selective isozyme-specific inhibitors currently being developed against class I HDACs (1, 2, 3 and 8) and class II HDACs (4, 5, 6, 7, 9 and 10) will be valuable tools for elucidating the roles played by individual HDACs in different physiological and pathological settings. Isozyme-specific HDACi promise to have greater efficacy and reduced side effects, as required for treating chronic disease over extended periods of time. This article reviews the current understanding of roles for individual HDAC isozymes and effects of HDACi on bone cells, (osteoblasts, osteoclasts and osteocytes), in relation to bone remodelling in conditions characterised by pathological bone loss, including periodontitis, rheumatoid arthritis and myeloma bone disease.
Collapse
Affiliation(s)
- M D Cantley
- Discipline of Physiology, School of Medicine, University of Adelaide, SA 5005, Australia; Myeloma Research Laboratory, Cancer Theme, SAHMRI, Adelaide, SA 5000, Australia; Colgate Australian Clinical Dental Research Centre, Adelaide Dental School, University of Adelaide, SA 5005, Australia.
| | - A C W Zannettino
- Discipline of Physiology, School of Medicine, University of Adelaide, SA 5005, Australia; Myeloma Research Laboratory, Cancer Theme, SAHMRI, Adelaide, SA 5000, Australia
| | - P M Bartold
- Colgate Australian Clinical Dental Research Centre, Adelaide Dental School, University of Adelaide, SA 5005, Australia
| | - D P Fairlie
- Centre for Inflammation and Disease Research, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia; Australian Research Council Centre of Excellence in Advanced Molecular Imaging, Institute for Molecular Bioscience, The University of Queensland, Brisbane, QLD 4072, Australia
| | - D R Haynes
- Discipline of Anatomy and Pathology, School of Medicine, University of Adelaide, SA 5005, Australia
| |
Collapse
|
14
|
Gankovskaya LV, Khelminskaya NM, Molchanova EA, Svitich OA. ROLE OF INNATE IMMUNITY FACTORS IN PERIODONTITIS PATHOGENESIS. ACTA ACUST UNITED AC 2016. [DOI: 10.36233/0372-9311-2016-2-100-107] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Chronic generalized periodontitis (CGP) is a disease of periodontium tissues supporting tooth induced by bacteria, that is characterized by the presence of processes of inflammation with destruction ofbone tissue. The knowledge of molecular mechanisms of CGP pathogenesis facilitates creation of the most effective methods of therapy of this disease. Bacterial infection is a primary factor in periodontitis etiology, however is not sufficient for its start and subsequent development. It is known, that bacterial factors induce a local inflammation reaction and activate the system of innate immunity through activation of Toll-like receptors (TLR), located on the surface of resident cells and leukocytes. Activation of these cells results in production of pro-inflammatory cytokines and recruitment of phagocytes and lymphocytes into the inflammation zone. In review we examined the known data regarding factors of immune protection of periodontium including cell populations and cytokines, as well as mechanisms of tissue destruction, that support the tooth. Perspectives of therapy are also discussed.
Collapse
|
15
|
Effects of fluoride-ion-implanted titanium surface on the cytocompatibility in vitro and osseointegatation in vivo for dental implant applications. Colloids Surf B Biointerfaces 2015; 136:752-60. [DOI: 10.1016/j.colsurfb.2015.09.039] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2014] [Revised: 08/20/2015] [Accepted: 09/22/2015] [Indexed: 01/06/2023]
|
16
|
Muluke M, Gold T, Kiefhaber K, Al-Sahli A, Celenti R, Jiang H, Cremers S, Van Dyke T, Schulze-Späte U. Diet-Induced Obesity and Its Differential Impact on Periodontal Bone Loss. J Dent Res 2015; 95:223-9. [PMID: 26450512 DOI: 10.1177/0022034515609882] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
Obesity is associated with abnormal lipid metabolism and impaired bone homeostasis. The aim of our study was to investigate the impact of specific elevated fatty acid (FA) levels on alveolar bone loss in a Porphyromonas gingivalis-induced model of periodontal disease and to analyze underlying cellular mechanisms in bone-resorbing osteoclasts and bone-forming osteoblasts in mice. Four-week-old male C57BL/6 mice were randomly divided in groups and subjected to a palmitic acid (PA)- or oleic acid (OA)-enriched high-fat diet (HFD) (20% of calories from FA) or a normal caloric diet (C group) (10% of calories from FA) for 16 wk. Starting at week 10, mice were infected orally with P. gingivalis (W50) or placebo to induce alveolar bone loss. Animals were sacrificed, and percentage fat, serum inflammation (tumor necrosis factor [TNF]-α), and bone metabolism (osteocalcin [OC], carboxy-terminal collagen crosslinks [CTX], and N-terminal propeptides of type I procollagen [P1NP]) markers were measured. Osteoblasts and osteoclasts were cultured in the presence of elevated PA or OA levels and exposed to P. gingivalis. Animals on FA-enriched diets weighed significantly more compared with animals on a normal caloric diet (P < 0.05). Both obese groups had similar percentages of fat (P = nonsignificant); however, alveolar bone loss was significantly greater in animals that were on the PA-enriched HFD (P < 0.05). TNF-α levels were highest in the PA group (P < 0.001) and increased in all groups in response to P. gingivalis inoculation (P < 0.01), whereas bone remodeling markers OC, CTX, and P1NP were lowest in the PA group (P < 0.001) and highest in the C group. Bacterial challenge decreased bone metabolism markers in all groups (P < 0.01). Further, osteoclasts showed an augmented inflammatory response to P. gingivalis in the presence of hyperlipidemic PA levels as opposed to OA cultures, which responded similarly to controls. These findings indicate that the specific FA profile of diet rather than weight gain and obesity alone modulates bone metabolism and can therefore influence alveolar bone loss.
Collapse
Affiliation(s)
- M Muluke
- Division of Periodontics, Columbia University College of Dental Medicine, New York, NY, USA Institute of Human Nutrition, Columbia University, New York, NY, USA
| | - T Gold
- Division of Periodontics, Columbia University College of Dental Medicine, New York, NY, USA Institute of Human Nutrition, Columbia University, New York, NY, USA
| | - K Kiefhaber
- Division of Periodontics, Columbia University College of Dental Medicine, New York, NY, USA Institute of Human Nutrition, Columbia University, New York, NY, USA
| | - A Al-Sahli
- Division of Periodontics, Columbia University College of Dental Medicine, New York, NY, USA
| | - R Celenti
- Division of Periodontics, Columbia University College of Dental Medicine, New York, NY, USA
| | - H Jiang
- Irving Institute for Clinical and Translational Research, Columbia University Medical Center, New York, NY, USA
| | - S Cremers
- Irving Institute for Clinical and Translational Research, Columbia University Medical Center, New York, NY, USA
| | | | - U Schulze-Späte
- Division of Periodontics, Columbia University College of Dental Medicine, New York, NY, USA
| |
Collapse
|
17
|
Park OJ, Kim J, Yang J, Yun CH, Han SH. Enterococcus faecalis Inhibits Osteoblast Differentiation and Induces Chemokine Expression. J Endod 2015; 41:1480-5. [DOI: 10.1016/j.joen.2015.04.025] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Revised: 03/17/2015] [Accepted: 04/28/2015] [Indexed: 01/05/2023]
|
18
|
Dittmann C, Doueiri S, Kluge R, Dommisch H, Gaber T, Pischon N. Porphyromonas gingivalisSuppresses Differentiation and Increases Apoptosis of Osteoblasts From New Zealand Obese Mice. J Periodontol 2015; 86:1095-102. [DOI: 10.1902/jop.2015.150032] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
|
19
|
Chatzivasileiou K, Kriebel K, Steinhoff G, Kreikemeyer B, Lang H. Do oral bacteria alter the regenerative potential of stem cells? A concise review. J Cell Mol Med 2015; 19:2067-74. [PMID: 26058313 PMCID: PMC4568911 DOI: 10.1111/jcmm.12613] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2014] [Accepted: 03/15/2015] [Indexed: 12/17/2022] Open
Abstract
Mesenchymal stem cells (MSCs) are widely recognized as critical players in tissue regeneration. New insights into stem cell biology provide evidence that MSCs may also contribute to host defence and inflammation. In case of tissue injury or inflammatory diseases, e.g. periodontitis, stem cells are mobilized towards the site of damage, thus coming in close proximity to bacteria and bacterial components. Specifically, in the oral cavity, complex ecosystems of commensal bacteria live in a mutually beneficial state with the host. However, the formation of polymicrobial biofilm communities with pathogenic properties may trigger an inadequate host inflammatory-immune response, leading to the disruption of tissue homoeostasis and development of disease. Because of their unique characteristics, MSCs are suggested as crucial regulators of tissue regeneration even under such harsh environmental conditions. The heterogeneous effects of bacteria on MSCs across studies imply the complexity underlying the interactions between stem cells and bacteria. Hence, a better understanding of stem cell behaviour at sites of inflammation appears to be a key strategy in developing new approaches for in situ tissue regeneration. Here, we review the literature on the effects of oral bacteria on cell proliferation, differentiation capacity and immunomodulation of dental-derived MSCs.
Collapse
Affiliation(s)
- Kyriaki Chatzivasileiou
- Department of Operative Dentistry and Periodontology, University of Rostock, Rostock, Germany
| | - Katja Kriebel
- Department of Operative Dentistry and Periodontology, University of Rostock, Rostock, Germany
| | - Gustav Steinhoff
- Department of Cardiac Surgery, University of Rostock, Rostock, Germany
| | - Bernd Kreikemeyer
- Institute of Medical Microbiology, Virology and Hygiene, University of Rostock, Rostock, Germany
| | - Hermann Lang
- Department of Operative Dentistry and Periodontology, University of Rostock, Rostock, Germany
| |
Collapse
|
20
|
Aydin K, Ekinci FY, Korachi M. Expression Profiles of TGF-β and TLR Pathways in Porphyromonas gingivalis and Prevotella intermedia Challenged Osteoblasts. Jundishapur J Microbiol 2015; 8:e17920. [PMID: 26034550 PMCID: PMC4449864 DOI: 10.5812/jjm.8(4)2015.17920] [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: 01/29/2014] [Revised: 07/14/2014] [Accepted: 07/25/2014] [Indexed: 11/16/2022] Open
Abstract
BACKGROUND The presence of certain oral pathogens at implant sites can hinder the osseointegration process. However, it is unclear how and by what microorganisms it happens. OBJECTIVES This study investigated whether the presence of oral pathogens of Porphyromonas gingivalis and Prevotella intermedia individually, play a role in the failure of bone formation by determining the expression profiles of Transforming Growth Factor Beta (TGF-β/Bone Morphogenic Protein (BMP) and Toll-Like Receptor (TLR) pathways in challenged osteoblasts. MATERIALS AND METHODS Cell viability of P. gingivalis and P. intermedia challenged osteoblasts were determined by WST assay. Changes in osteoblast morphology and inhibition of mineralization were observed by Scanning Electron Microscopy (SEM) and Von Kossa staining, respectively. Expression of TGF-β and TLR pathway genes on challenged cells were identified by RT profiler array. Both P. gingivalis and P. intermedia challenges resulted in reduced viability and mineralization of osteoblasts. RESULTS Viability was reduced to 56.8% (P. gingivalis) and 52.75% (P. intermedia) at 1000 multiplicity. Amongst 48 genes examined, expressions of BMPER, SMAD1, IL8 and NFRKB were found to be highly upregulated by both bacterial challenges (Fold Change > 4). CONCLUSIONS P. gingivalis and P. intermedia could play a role in implant failure by changing the expression profiles of genes related to bone formation and resorption.
Collapse
Affiliation(s)
- Kubra Aydin
- Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
| | - Fatma Yesim Ekinci
- Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
| | - May Korachi
- Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey
- Corresponding author: May Korachi, Department of Genetics and Bioengineering, Yeditepe University, Istanbul, Turkey. Tel: +90-2165782653, Fax: +90-2165780829, E-mail:
| |
Collapse
|
21
|
Zhang W, Ju J, Rigney T, Tribble G. Porphyromonas gingivalis infection increases osteoclastic bone resorption and osteoblastic bone formation in a periodontitis mouse model. BMC Oral Health 2014; 14:89. [PMID: 25027664 PMCID: PMC4108595 DOI: 10.1186/1472-6831-14-89] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2014] [Accepted: 07/10/2014] [Indexed: 11/27/2022] Open
Abstract
Background Porphyromonas gingivalis has been shown to invade osteoblasts and inhibit their differentiation and mineralization in vitro. However, it is unclear if P. gingivalis can invade osteoblasts in vivo and how this would affect alveolar osteoblast/osteoclast dynamics. This study aims to answer these questions using a periodontitis mouse model under repetitive P. gingivalis inoculations. Methods For 3-month-old BALB/cByJ female mice, 109 CFU of P. gingivalis were inoculated onto the gingival margin of maxillary molars 4 times at 2-day intervals. After 2 weeks, another 4 inoculations at 2-day intervals were applied. Calcein was injected 7 and 2 days before sacrificing animals to label the newly formed bone. Four weeks after final inoculation, mice were sacrificed and maxilla collected. Immunohistochemistry, micro-CT, and bone histomorphometry were performed on the specimens. Sham infection with only vehicle was the control. Results P. gingivalis was found to invade gingival epithelia, periodontal ligament fibroblasts, and alveolar osteoblasts. Micro-CT showed alveolar bone resorption and significant reduction of bone mineral density and content in the infected mice compared to the controls. Bone histomorphometry showed a decrease in osteoblasts, an increase in osteoclasts and bone resorption, and a surprisingly increased osteoblastic bone formation in the infected mice compared to the controls. Conclusions P. gingivalis invades alveolar osteoblasts in the periodontitis mouse model and cause alveolar bone loss. Although P. gingivalis appears to suppress osteoblast pool and enhance osteoclastic bone resorption, the bone formation capacity is temporarily elevated in the infected mice, possibly via some anti-microbial compensational mechanisms.
Collapse
Affiliation(s)
- Wenjian Zhang
- Department of Diagnostic and Biomedical Sciences, 7500 Cambridge Street, Suite 5366, Houston 77054, TX, USA.
| | | | | | | |
Collapse
|
22
|
Kerr JE, Abramian JR, Dao DHV, Rigney TW, Fritz J, Pham T, Gay I, Parthasarathy K, Wang BY, Zhang W, Tribble GD. Genetic exchange of fimbrial alleles exemplifies the adaptive virulence strategy of Porphyromonas gingivalis. PLoS One 2014; 9:e91696. [PMID: 24626479 PMCID: PMC3953592 DOI: 10.1371/journal.pone.0091696] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2013] [Accepted: 02/15/2014] [Indexed: 11/19/2022] Open
Abstract
Porphyromonas gingivalis is a gram–negative anaerobic bacterium, a member of the human oral microbiome, and a proposed “keystone” pathogen in the development of chronic periodontitis, an inflammatory disease of the gingiva. P. gingivalis is a genetically diverse species, and is able to exchange chromosomal DNA between strains by natural competence and conjugation. In this study, we investigate the role of horizontal DNA transfer as an adaptive process to modify behavior, using the major fimbriae as our model system, due to their critical role in mediating interactions with the host environment. We show that P. gingivalis is able to exchange fimbrial allele types I and IV into four distinct strain backgrounds via natural competence. In all recombinants, we detected a complete exchange of the entire fimA allele, and the rate of exchange varies between the different strain backgrounds. In addition, gene exchange within other regions of the fimbrial genetic locus was identified. To measure the biological implications of these allele swaps we compared three genotypes of fimA in an isogenic background, strain ATCC 33277. We demonstrate that exchange of fimbrial allele type results in profound phenotypic changes, including the quantity of fimbriae elaborated, membrane blebbing, auto-aggregation and other virulence-associated phenotypes. Replacement of the type I allele with either the type III or IV allele resulted in increased invasion of gingival fibroblast cells relative to the isogenic parent strain. While genetic variability is known to impact host-microbiome interactions, this is the first study to quantitatively assess the adaptive effect of exchanging genes within the pan genome cloud. This is significant as it presents a potential mechanism by which opportunistic pathogens may acquire the traits necessary to modify host-microbial interactions.
Collapse
Affiliation(s)
- Jennifer E. Kerr
- Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Jared R. Abramian
- Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Doan-Hieu V. Dao
- Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Todd W. Rigney
- Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Jamie Fritz
- Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Tan Pham
- Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Isabel Gay
- Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Kavitha Parthasarathy
- Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Bing-yan Wang
- Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Wenjian Zhang
- Department of Diagnostic and Biomedical Sciences, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
| | - Gena D. Tribble
- Department of Periodontics and Dental Hygiene, School of Dentistry, University of Texas Health Science Center at Houston, Houston, Texas, United States of America
- * E-mail:
| |
Collapse
|
23
|
Teixeira KIR, Denadai AML, Sinisterra RD, Cortés ME. Cyclodextrin modulates the cytotoxic effects of chlorhexidine on microrganisms and cellsin vitro. Drug Deliv 2014; 22:444-53. [DOI: 10.3109/10717544.2013.879679] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|
24
|
Periodontal disease: linking the primary inflammation to bone loss. Clin Dev Immunol 2013; 2013:503754. [PMID: 23762091 PMCID: PMC3676984 DOI: 10.1155/2013/503754] [Citation(s) in RCA: 170] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2013] [Accepted: 05/06/2013] [Indexed: 01/22/2023]
Abstract
Periodontal disease (PD), or periodontitis, is defined as a bacterially induced disease of the tooth-supporting (periodontal) tissues. It is characterized by inflammation and bone loss; therefore understanding how they are linked would help to address the most efficacious therapeutic approach. Bacterial infection is the primary etiology but is not sufficient to induce the disease initiation or progression. Indeed, bacteria-derived factors stimulate a local inflammatory reaction and activation of the innate immune system. The innate response involves the recognition of microbial components by host cells, and this event is mediated by toll-like receptors (TLRs) expressed by resident cells and leukocytes. Activation of these cells leads to the release of proinflammatory cytokines and recruitment of phagocytes and lymphocytes. Activation of T and B cells initiates the adaptive immunity with Th1 Th2 Th17 Treg response and antibodies production respectively. In this inflammatory scenario, cytokines involved in bone regulation and maintenance have considerable relevance because tissue destruction is believed to be the consequence of host inflammatory response to the bacterial challenge. In the present review, we summarize host factors including cell populations, cytokines, and mechanisms involved in the destruction of the supporting tissues of the tooth and discuss treatment perspectives based on this knowledge.
Collapse
|
25
|
Zhang W, Ju J, Rigney T, Tribble G. Integrin α5β1-fimbriae binding and actin rearrangement are essential for Porphyromonas gingivalis invasion of osteoblasts and subsequent activation of the JNK pathway. BMC Microbiol 2013; 13:5. [PMID: 23305098 PMCID: PMC3566952 DOI: 10.1186/1471-2180-13-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2012] [Accepted: 01/08/2013] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Chronic periodontitis is an infectious disease of the periodontium, which includes the gingival epithelium, periodontal ligament and alveolar bone. The signature clinical feature of periodontitis is resorption of alveolar bone and subsequent tooth loss. The Gram-negative oral anaerobe, Porphyromonas gingivalis, is strongly associated with periodontitis, and it has been shown previously that P. gingivalis is capable of invading osteoblasts in a dose- and time-dependent manner resulting in inhibition of osteoblast differentiation and mineralization in vitro. It is not yet clear which receptors and cytoskeletal components mediate the invasive process, nor how the signaling pathways and viability of osteoblasts are affected by bacterial internalization. This study aimed to investigate these issues using an in vitro model system involving the inoculation of P. gingivalis ATCC 33277 into primary osteoblast cultures. RESULTS It was found that binding between P. gingivalis fimbriae and integrin α5β1 on osteoblasts, and subsequent peripheral condensation of actin, are essential for entry of P. gingivalis into osteoblasts. The JNK pathway was activated in invaded osteoblasts, and apoptosis was induced by repeated infections. CONCLUSIONS These observations indicate that P. gingivalis manipulates osteoblast function to promote its initial intracellular persistence by prolonging the host cell life span prior to its intercellular dissemination via host cell lysis. The identification of molecules critical to the interaction between P. gingivalis and osteoblasts will facilitate the development of new therapeutic strategies for the prevention of periodontal bone loss.
Collapse
Affiliation(s)
- Wenjian Zhang
- Department of Diagnostic and Biomedical Sciences, University of Texas School of Dentistry at Houston, 7500 Cambridge Street, Suite 5366, Houston, TX 77054, USA.
| | | | | | | |
Collapse
|
26
|
Saadi-Thiers K, Huck O, Simonis P, Tilly P, Fabre JE, Tenenbaum H, Davideau JL. Periodontal and systemic responses in various mice models of experimental periodontitis: respective roles of inflammation duration and Porphyromonas gingivalis infection. J Periodontol 2012; 84:396-406. [PMID: 22655910 DOI: 10.1902/jop.2012.110540] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND The great variability of periodontal and systemic responses to experimental periodontitis reflects the inherent pathogenic complexity of mice models and could limit the resulting interpretations and their extension to human diseases. This study compared the effect of Porphyromonas gingivalis (Pg) infection and experimental periodontitis duration at local and systemic levels in various models. METHODS Periodontitis was induced in C57BL/6J mice by ligatures previously incubated with Pg (LIGPG group) or not (LIG group) or by oral gavage (GAV) with Pg ATCC 33277. Blood samples were taken, and mice were euthanized at different times. Periodontal tissue destruction, osteoclast number, and inflammation were assessed by histomorphometry, tartrate-resistant acid phosphatase histoenzymology, and cathepsin B (CATB) and matrix metalloproteinase 9 (MMP9) immunochemistry. Serum levels of interleukin-6 (IL-6) and IL-1β were measured using enzyme-linked immunosorbent assay bioplex methods. RESULTS Periodontal tissue destruction and osteoclast numbers were significantly elevated in LIGPG models compared to LIG and GAV models. They increased with time with the exception of osteoclast numbers in the LIG model. CATB and MMP9 expression was related to bone destruction processes and Pg infection. The highest serum levels of IL-6 and IL-1β were observed in the LIGPG group. A decrease of IL-6 and an increase of IL-1β serum level were observed with time in LIGPG group contrary to LIG group. CONCLUSIONS These data indicate that Pg infection worsened periodontal tissue destruction through specific pathogenic pathways and modified systemic response to periodontal inflammation. Furthermore, the blood cytokine response to ligature models showed their relevance for evaluating the systemic impact of periodontal disease.
Collapse
Affiliation(s)
- Kenza Saadi-Thiers
- Department of Periodontology, Dental Faculty, University of Strasbourg, Strasbourg, France
| | | | | | | | | | | | | |
Collapse
|
27
|
Zhang W, Ju J, Rigney T, Tribble GD. Fimbriae of Porphyromonas gingivalis are important for initial invasion of osteoblasts, but not for inhibition of their differentiation and mineralization. J Periodontol 2010; 82:909-16. [PMID: 21189086 DOI: 10.1902/jop.2010.100501] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
BACKGROUND Porphyromonas gingivalis is etiologically associated with chronic periodontitis. The major fimbriae of this periodontal pathogen mediate binding to host gingival epithelial cells and fibroblasts, a critical function in the initiation of periodontitis. However, the role of fimbriae in P. gingivalis-osteoblast interactions remains unknown. In the present study, the involvement of major fimbriae in the initial and long-term interactions between P. gingivalis and osteoblasts is investigated. METHODS Primary mouse calvarial osteoblast cultures were established and inoculated with P. gingivalis ATCC 33277 or YPF1, a major fimbriae-deficient mutant of P. gingivalis. Confocal microscopy images were acquired to assess bacterial invasion. DNA content measurement, real-time polymerase chain reaction, and alizarin red S staining and calcium content analysis were used to study the impact of bacteria on the proliferation, differentiation, and mineralization of osteoblasts, respectively. RESULTS Compared to the parent strain, YPF1 was significantly reduced in invasion of osteoblasts after 3 hours interaction. However, extended culture of infected osteoblasts did not reveal significant differences in persistence between the two strains. Proliferation of osteoblasts was not affected by either strain, and differentiation and mineralization of osteoblasts were inhibited by both strains to comparable levels. CONCLUSION This study reveals that major fimbriae are involved in the initial invasion of osteoblasts by P. gingivalis, but are not essential for the subsequent inhibition of osteoblast differentiation and mineralization in long-term culture.
Collapse
Affiliation(s)
- Wenjian Zhang
- Department of Diagnostic Sciences, University of Texas Dental Branch at Houston, Houston, TX, USA.
| | | | | | | |
Collapse
|