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Peng Z, Zhang W, Hong H, Liu L. Effect of luteolin on oxidative stress and inflammation in the human osteoblast cell line hFOB1.19 in an inflammatory microenvironment. BMC Pharmacol Toxicol 2024; 25:40. [PMID: 38997762 PMCID: PMC11241847 DOI: 10.1186/s40360-024-00764-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 07/05/2024] [Indexed: 07/14/2024] Open
Abstract
BACKGROUND Periapical lesions are characterized by periapical inflammation and damage to periapical tissues and eventually lead to bone resorption and even tooth loss. H2O2 is widely used in root canal therapy for patients with periapical inflammation. Luteolin possesses high anti-inflammatory, antioxidant, and anticancer potential. However, the underlying mechanism of the efficacy of H2O2 and luteolin on oxidative stress and inflammatory tissue has not been previously addressed. We aimed to investigate the anti-inflammatory and antioxidative effects of luteolin on H2O2-induced cellular oxidative inflammation. METHODS After human osteoblasts (hFOB1.19) were treated with lipopolysaccharide (LPS), luteolin, or H2O2, cell proliferation was analysed by using a cell counting kit-8 (CCK-8), cell apoptosis was measured by using flow cytometry, the production of reactive oxygen species (ROS) was evaluated by using an oxidation-sensitive probe DCFH-DA ROS assay kit, and the expression of genes and proteins was detected by using reverse transcription quantitative polymerase chain reaction (RT‒qPCR), Western blotting, and enzyme-linked immunosorbent assay (ELISA). RESULTS We demonstrated that inflammation is closely related to oxidative stress and that the oxidative stress level in the inflammatory environment is increased. Luteolin inhibited the H2O2-induced increase in the expression of interleukin-6 (IL-6), interleukin-8 (IL-8) and tumour necrosis factor α (TNF-α) and significantly repressed the H2O2-induced increase in ROS, as well as markedly strengthened superoxide dismutase (SOD) activity in hFOB1.19 cells. Moreover, we detected that luteolin may inhibit H2O2-induced hFOB1.19 cell injury by suppressing the NF-κB pathway. CONCLUSION We elucidated that luteolin protected human osteoblasts (hFOB1.19) from H2O2-induced cell injury and inhibited the production of proinflammatory cytokines by suppressing the NF-κB signalling pathway. Our findings provide a potential drug for treating H2O2-induced periodontitis and cell injury.
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Affiliation(s)
- Zhengjun Peng
- Operative Dentistry and Endodontics, Guanghua School of Stomatology, Guangdong Province Key Laboratory of Stomatology, Affiliated Stomatological Hospital, Sun Yat-Sen University, 56 Lingyuan Xi Rd, Guangzhou, 510055, Guangdong, China
| | - Wenyu Zhang
- Operative Dentistry and Endodontics, Guanghua School of Stomatology, Guangdong Province Key Laboratory of Stomatology, Affiliated Stomatological Hospital, Sun Yat-Sen University, 56 Lingyuan Xi Rd, Guangzhou, 510055, Guangdong, China
| | - Hong Hong
- Operative Dentistry and Endodontics, Guanghua School of Stomatology, Guangdong Province Key Laboratory of Stomatology, Affiliated Stomatological Hospital, Sun Yat-Sen University, 56 Lingyuan Xi Rd, Guangzhou, 510055, Guangdong, China
| | - Lu Liu
- Operative Dentistry and Endodontics, Guanghua School of Stomatology, Guangdong Province Key Laboratory of Stomatology, Affiliated Stomatological Hospital, Sun Yat-Sen University, 56 Lingyuan Xi Rd, Guangzhou, 510055, Guangdong, China.
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Astaneh ME, Noori F, Fereydouni N. Curcumin-loaded scaffolds in bone regeneration. Heliyon 2024; 10:e32566. [PMID: 38961905 PMCID: PMC11219509 DOI: 10.1016/j.heliyon.2024.e32566] [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: 12/27/2023] [Revised: 06/05/2024] [Accepted: 06/05/2024] [Indexed: 07/05/2024] Open
Abstract
In recent years, there has been a notable surge in the development of engineered bone scaffolds intended for the repair of bone defects. While autografts and allografts have traditionally served as the primary methods in bone tissue engineering, their inherent limitations have spurred the exploration of novel avenues in biomedical implant development. The emergence of bone scaffolds not only facilitates bone reconstruction but also offers a platform for the targeted delivery of therapeutic agents. There exists a pervasive interest in leveraging various drugs, proteins, growth factors, and biomolecules with osteogenic properties to augment bone formation, as the enduring side effects associated with current clinical modalities necessitate the pursuit of safer alternatives. Curcumin, the principal bioactive compound found in turmeric, has demonstrated notable efficacy in regulating the proliferation and differentiation of bone cells while promoting bone formation. Nevertheless, its utility is hindered by restricted water solubility and poor bioavailability. Strategies aimed at enhancing the solubility, stability, and bioavailability of curcumin, including formulation techniques such as liposomes and nanoparticles or its complexation with metals, have been explored. This investigation is dedicated to exploring the impact of curcumin on the proliferation, differentiation, and migration of osteocytes, osteoblasts, and osteoclasts.
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Affiliation(s)
- Mohammad Ebrahim Astaneh
- Department of Anatomical Sciences, School of Medicine, Fasa University of Medical Sciences, Fasa, Iran
- Department of Tissue Engineering, School of Medicine, Fasa University of Medical Sciences, Fasa, Iran
- Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran
| | - Fariba Noori
- Department of Tissue Engineering, School of Medicine, Fasa University of Medical Sciences, Fasa, Iran
- Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran
| | - Narges Fereydouni
- Department of Tissue Engineering, School of Medicine, Fasa University of Medical Sciences, Fasa, Iran
- Student Research Committee, Fasa University of Medical Sciences, Fasa, Iran
- Noncommunicable Diseases Research Center, Fasa University of Medical Sciences, Fasa, Iran
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Jia K, You J, Zhu Y, Li M, Chen S, Ren S, Chen S, Zhang J, Wang H, Zhou Y. Platelet-rich fibrin as an autologous biomaterial for bone regeneration: mechanisms, applications, optimization. Front Bioeng Biotechnol 2024; 12:1286035. [PMID: 38689760 PMCID: PMC11058865 DOI: 10.3389/fbioe.2024.1286035] [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: 08/30/2023] [Accepted: 03/22/2024] [Indexed: 05/02/2024] Open
Abstract
Platelet-rich fibrin, a classical autologous-derived bioactive material, consists of a fibrin scaffold and its internal loading of growth factors, platelets, and leukocytes, with the gradual degradation of the fibrin scaffold and the slow release of physiological doses of growth factors. PRF promotes vascular regeneration, promotes the proliferation and migration of osteoblast-related cells such as mesenchymal cells, osteoblasts, and osteoclasts while having certain immunomodulatory and anti-bacterial effects. PRF has excellent osteogenic potential and has been widely used in the field of bone tissue engineering and dentistry. However, there are still some limitations of PRF, and the improvement of its biological properties is one of the most important issues to be solved. Therefore, it is often combined with bone tissue engineering scaffolds to enhance its mechanical properties and delay its degradation. In this paper, we present a systematic review of the development of platelet-rich derivatives, the structure and biological properties of PRF, osteogenic mechanisms, applications, and optimization to broaden their clinical applications and provide guidance for their clinical translation.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | - Yanmin Zhou
- Jilin Provincial Key Laboratory of Tooth Development and Bone Remodeling, Hospital of Stomatology, Jilin University, Changchun, Jilin, China
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Zhang Z, Zhang Y, Cai Y, Li D, He J, Feng Z, Xu Q. NAT10 regulates the LPS-induced inflammatory response via the NOX2-ROS-NF-κB pathway in macrophages. BIOCHIMICA ET BIOPHYSICA ACTA. MOLECULAR CELL RESEARCH 2023; 1870:119521. [PMID: 37307924 DOI: 10.1016/j.bbamcr.2023.119521] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/02/2023] [Revised: 05/08/2023] [Accepted: 06/06/2023] [Indexed: 06/14/2023]
Abstract
Periodontitis is a chronic osteolytic inflammatory disease resulting from complex dynamic interactions among bacterial pathogens and the host immune response. Macrophages play a vital role in the pathogenesis of periodontitis by triggering periodontal inflammation and inducing periodontium destruction. N-Acetyltransferase 10 (NAT10) is an acetyltransferase that has been shown to catalyse N4-acetylcytidine (ac4C) mRNA modification and is related to cellular pathophysiological processes, including the inflammatory immune response. Nevertheless, whether NAT10 regulates the inflammatory response of macrophages in periodontitis remains unclear. In this study, the expression of NAT10 in macrophages was found to decrease during LPS-induced inflammation. NAT10 knockdown significantly reduced the generation of inflammatory factors, while NAT10 overexpression had the opposite effect. RNA sequencing revealed that the differentially expressed genes were enriched in the NF-κB signalling pathway and oxidative stress. Both the NF-κB inhibitor Bay11-7082 and the ROS scavenger N-acetyl-L-cysteine (NAC) could reverse the upregulation of inflammatory factors. NAC inhibited the phosphorylation of NF-κB, but Bay11-7082 had no effect on the production of ROS in NAT10-overexpressing cells, suggesting that NAT10 activated the LPS-induced NF-κB signalling pathway by regulating ROS generation. Furthermore, the expression and stability of Nox2 was promoted after NAT10 overexpression, indicating that Nox2 may be a potential target of NAT10. In vivo, the NAT10 inhibitor Remodelin reduced macrophage infiltration and bone resorption in ligature-induced periodontitis mice. In summary, these results showed that NAT10 accelerated LPS-induced inflammation via the NOX2-ROS-NF-κB pathway in macrophages and that its inhibitor Remodelin might be of potential therapeutic significance in periodontitis treatment.
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Affiliation(s)
- Zhanqi Zhang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Yiwen Zhang
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Yongjie Cai
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Di Li
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Jinlin He
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China
| | - Zhihui Feng
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China.
| | - Qiong Xu
- Hospital of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guangdong Provincial Key Laboratory of Stomatology, Sun Yat-sen University, Guangzhou 510055, China; Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou 510055, China.
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Xia Z, Li Q, Tang Z. Network pharmacology, molecular docking, and experimental pharmacology explored Ermiao wan protected against periodontitis via the PI3K/AKT and NF-κB/MAPK signal pathways. JOURNAL OF ETHNOPHARMACOLOGY 2023; 303:115900. [PMID: 36414214 DOI: 10.1016/j.jep.2022.115900] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 10/30/2022] [Accepted: 10/30/2022] [Indexed: 06/16/2023]
Abstract
ETHNOPHARMACOLOGICAL RELEVANCE Ermiao Wan (EMW), a classic and famous traditional Chinese medicine (TCM)-based herbal formula combined Phellodendron chinense C.K.Schneid. (Cortex Phellodendri Chinsis, CP) and Atractylodes lancea (Thunb.) DC. (Rhizoma Atractylodis, RA) with the weight composition of 1:1, has been used for the treatment of periodontitis in China for a long time. However, its efficacy and mechanism of action are still unclear now. AIM OF THE STUDY This study explored the efficacy and pharmaceutical mechanism of action of EMW against periodontitis. MATERIALS AND METHODS The efficacy of EMW against periodontitis was evaluated using the ligature-induced periodontitis (LIP) mice, and inflammatory-related factors in gingiva and alveolar bone loss were determined using the qRT-PCR and micro-CT assays. The potential pharmacological mechanisms were predicted by bioinformatics analysis and further confirmed by the qRT-PCR and western blotting assays. RESULTS EMW exhibited inhibitory effects on periodontitis in the LIP mice. Bio-informational analysis showed the core compounds (berberine and chlorogenic acid) targeted the key genes (AKT, MAPK1, MAPK14, NF-κB, TNF, IL-2, and IL1B) through regulating the PI3K/AKT and NF-κB/MAPK signal pathways, which were validated using the qRT-PCR and western blotting assays. CONCLUSIONS EMW could eliminate alveolar bone loss and inhibit inflammation, thereby preventing the development of periodontitis. The mechanism of action may be achieved by regulating the PI3K/AKT and NF-κB/MAPK signal pathways. Therefore, EMW was a potential therapy for the treatment of periodontitis.
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Affiliation(s)
- Zhengxiang Xia
- Department of Pharmacy, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, 399 Middle Yan Chang Road, Shanghai, 200072, China.
| | - Qin Li
- Department of Implantology, Stomatological Hospital and Dental School of Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, 200072, China.
| | - Zhongyan Tang
- Department of Emergency and Critical Care Medicine, Jin Shan Hospital, Fudan University, 1508 Longhan Road, Shanghai, 201508, China.
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Huang YY, Wu JM, Wu WT, Lin JW, Liang YT, Hong ZZ, Jia XZ, Liu DM. Structural, antioxidant, and immunomodulatory activities of an acidic exopolysaccharide from Lactiplantibacillus plantarum DMDL 9010. Front Nutr 2022; 9:1073071. [PMID: 36570157 PMCID: PMC9779943 DOI: 10.3389/fnut.2022.1073071] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2022] [Accepted: 11/24/2022] [Indexed: 12/13/2022] Open
Abstract
This study investigated the structural, antioxidant, and immunomodulatory activities of acidic exopolysaccharide (EPS-LP2) isolated from Lactiplantibacillus plantarum DMDL 9010. EPS-LP2 is composed of fucose (Fuc), arabinose (Ara), galactose (Gal), glucose (Glc), mannose (Man), and D-fructose (Fru) with a molar ratio of 0.13: 0.69: 8.32: 27.57: 62.07: 0.58: 0.46, respectively. Structural analysis of EPS-LP2 exhibited a smooth irregular lamellar surface, rod-like structure with swollen ends and slippery surfaces, and good thermal stability. Based on the methylation and NMR analysis, sugar residues including t-Manp, t-Glcp, 2-Manp, 6-Galp, 6-Glcp, and 4-Glcp were found to exist in EPS-LP2. In the 50∼400 μg/ml range, EPS-LP2 showed negligible neurotoxicity to RAW264.7 cells. Moreover, EPS-LP2 could protect RAW264.7 cells from oxidative injury by lowering the generation of reactive oxygen species (ROS), malondialdehyde (MDA), and the secretion of lactate dehydrogenase (LDH). In contrast, an increase in superoxide dismutase (SOD), catalase (CAT), glutathione peroxidase (GSH-Px), and the concentrations of glutathione (GSH) were observed. Immunoreactivity assays showed that EPS-LP2 could suppress the expression of NO, tumor necrosis factor-α (TNF-α), and interleukin 6 (IL-6) and inhibit the activation of the mitogen-activated protein kinase (MAPK)/nuclear factor-κB-gene binding (NF-κB) cell pathway. Conclusively, EPS-LP2 could be a potential natural antioxidant and immunomodulatory agent in functional foods and medicines.
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Affiliation(s)
- Yan-yan Huang
- College of Food Science and Engineering, Foshan University, Foshan, Guangdong, China,Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan, Guangdong, China
| | - Jia-min Wu
- College of Food Science and Engineering, Foshan University, Foshan, Guangdong, China,Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan, Guangdong, China
| | - Wei-tong Wu
- College of Food Science and Engineering, Foshan University, Foshan, Guangdong, China,Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan, Guangdong, China
| | - Jia-wei Lin
- College of Food Science and Engineering, Foshan University, Foshan, Guangdong, China,Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan, Guangdong, China
| | - Yan-tong Liang
- College of Food Science and Engineering, Foshan University, Foshan, Guangdong, China,Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan, Guangdong, China
| | - Zhen-zhen Hong
- College of Food Science and Engineering, Foshan University, Foshan, Guangdong, China,Guangdong Provincial Key Laboratory of Intelligent Food Manufacturing, Foshan University, Foshan, Guangdong, China
| | - Xiang-ze Jia
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong, China
| | - Dong-mei Liu
- School of Food Science and Engineering, South China University of Technology, Guangzhou, Guangdong, China,*Correspondence: Dong-mei Liu,
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Gál P, Brábek J, Holub M, Jakubek M, Šedo A, Lacina L, Strnadová K, Dubový P, Hornychová H, Ryška A, Smetana K. Autoimmunity, cancer and COVID-19 abnormally activate wound healing pathways: critical role of inflammation. Histochem Cell Biol 2022; 158:415-434. [PMID: 35867145 PMCID: PMC9305064 DOI: 10.1007/s00418-022-02140-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/06/2022] [Indexed: 11/30/2022]
Abstract
Recent evidence indicates that targeting IL-6 provides broad therapeutic approaches to several diseases. In patients with cancer, autoimmune diseases, severe respiratory infections [e.g. coronavirus disease 2019 (COVID-19)] and wound healing, IL-6 plays a critical role in modulating the systemic and local microenvironment. Elevated serum levels of IL-6 interfere with the systemic immune response and are associated with disease progression and prognosis. As already noted, monoclonal antibodies blocking either IL-6 or binding of IL-6 to receptors have been used/tested successfully in the treatment of rheumatoid arthritis, many cancer types, and COVID-19. Therefore, in the present review, we compare the impact of IL-6 and anti-IL-6 therapy to demonstrate common (pathological) features of the studied diseases such as formation of granulation tissue with the presence of myofibroblasts and deposition of new extracellular matrix. We also discuss abnormal activation of other wound-healing-related pathways that have been implicated in autoimmune disorders, cancer or COVID-19.
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Affiliation(s)
- Peter Gál
- Department of Pharmacology, Pavol Jozef Šafárik University, Košice, Slovak Republic
- Department of Biomedical Research, East-Slovak Institute of Cardiovascular Diseases, Košice, Slovak Republic
- Prague Burn Centre, Third Faculty of Medicine, Charles University and University Hospital Kralovske Vinohrady, Prague, Czech Republic
| | - Jan Brábek
- Department of Cell Biology, Faculty of Science, Charles University, 120 00 Prague 2, Czech Republic
- BIOCEV, Faculty of Science, Charles University, 252 50 Vestec, Czech Republic
| | - Michal Holub
- Department of Infectious Diseases, First Faculty of Medicine, Military University Hospital Prague and Charles University, 160 00 Prague, Czech Republic
| | - Milan Jakubek
- Department of Paediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, 120 00 Prague 2, Czech Republic
- BIOCEV, First Faculty of Medicine, Charles University, 252 50 Vestec, Czech Republic
- Department of Analytical Chemistry, University of Chemistry and Technology Prague, 166 28 Prague 6, Czech Republic
| | - Aleksi Šedo
- Institute of Biochemistry and Experimental Oncology, First Faculty of Medicine, Charles University, 120 00 Praha 2, Czech Republic
| | - Lukáš Lacina
- BIOCEV, First Faculty of Medicine, Charles University, 252 50 Vestec, Czech Republic
- Institute of Anatomy, First Faculty of Medicine, Charles University, 120 00 Prague 2, Czech Republic
- Department of Dermatovenereology, First Faculty of Medicine, Charles University, 120 00 Prague 2, Czech Republic
| | - Karolína Strnadová
- BIOCEV, First Faculty of Medicine, Charles University, 252 50 Vestec, Czech Republic
- Institute of Anatomy, First Faculty of Medicine, Charles University, 120 00 Prague 2, Czech Republic
| | - Petr Dubový
- Institute of Anatomy, Faculty of Medicine, Masaryk University, 625 00 Brno, Czech Republic
| | - Helena Hornychová
- The Fingerland Department of Pathology, Faculty of Medicine Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic
| | - Aleš Ryška
- The Fingerland Department of Pathology, Faculty of Medicine Hradec Králové, Charles University, 500 05 Hradec Králové, Czech Republic
| | - Karel Smetana
- BIOCEV, First Faculty of Medicine, Charles University, 252 50 Vestec, Czech Republic
- Institute of Anatomy, First Faculty of Medicine, Charles University, 120 00 Prague 2, Czech Republic
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Lu HC, Ng MY, Liao YW, Maekawa S, Lin T, Yu CC. Bromelain inhibits the inflammation and senescence effect in diabetic periodontitis: A preliminary in vitro study. J Dent Sci 2022; 18:659-665. [PMID: 37021274 PMCID: PMC10068382 DOI: 10.1016/j.jds.2022.09.018] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/30/2022] [Indexed: 11/06/2022] Open
Abstract
Background/purpose Diabetes mellitus (DM) is a chronic metabolic disorder that affects millions of people worldwide. A growing evidence suggests that hyperglycemia in DM causes a pre-aging and pro-inflammatory condition known as inflammaging, which increases periodontitis susceptibility. Bromelain has been demonstrated to have anti-inflammatory and anti-aging properties in variety of tissues, but its effects on diabetic periodontitis remain unclear. Thus, the aim of this study is to investigate the its Bromelain's impact in diabetic periodontitis in terms of inflammation and senescence activity. Materials and methods We assessed the wound healing capacity, production of pro-inflammatory cytokines Interleukin (IL)-6 and IL-8 and senescence marker p16 in human gingival fibroblasts (HGFs) in response to Advanced glycation end-products (AGEs) stimulant, with or without Bromelain treatment. The expression of p65, p-ERK, and p-p38 were also examined to elucidate whether Bromelain's anti-inflammaging activity is mediated through NF-κB and MAPK/ERK signaling pathway. Results Bromelain concentrations ranging from 2.5 to 20 g/mL had no adverse effect on HGF cell proliferation. Bromelain improved wound healing in HGFs with AGEs stimulation. In addition, Bromelain suppressed the production of pro-inflammatory cytokines IL-6 and IL-8 in HGFs elicited by AGEs. Meanwhile, Bromelain treatment also inhibited the senescence activity and expression of p16 in AGEs-stimulated HGFs. Western blot analysis indicated that the upregulation of p-ERK, p-p38 and p65 induced by AGEs were inhibited by Bromelain in HGFs. Conclusion These data suggest that excessive AGEs in the gingiva may lead to the accumulation of pro-inflammatory cytokines and marked senescence activity. Bromelain application may be helpful in enhancing wound healing by suppressing inflammaging via downregulation of NF-κB and MAPK/ERK signaling pathways in DM individuals with periodontal disease.
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Kishi C, Higashihara M, Takemoto Y, Kamei M, Yoshioka Y, Matsumura S, Yamada K, Kobayashi T, Matahira Y, Moriyama T, Zaima N. Inhaled volatile β-caryophyllene is incorporated into the aortic wall and attenuates nicotine-induced aorta degeneration via a CB2 receptor-dependent pathway. Biomed Pharmacother 2022; 153:113423. [DOI: 10.1016/j.biopha.2022.113423] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2022] [Revised: 07/13/2022] [Accepted: 07/14/2022] [Indexed: 11/24/2022] Open
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Tereticornate A suppresses RANKL-induced osteoclastogenesis via the downregulation of c-Src and TRAF6 and the inhibition of RANK signaling pathways. Biomed Pharmacother 2022; 151:113140. [PMID: 35605290 DOI: 10.1016/j.biopha.2022.113140] [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: 04/04/2022] [Revised: 05/03/2022] [Accepted: 05/15/2022] [Indexed: 11/24/2022] Open
Abstract
Excessive osteoclast differentiation and activation are closely associated with the development and progression of osteoporosis. Natural plant-derived compounds that can inhibit osteoclastogenesis are an efficient strategy for the prevention and treatment of osteoporosis. Tereticornate A (TA) is a natural terpene ester compound extracted from the leaves and branches of Eucalyptus gracilis, with antiviral, antibacterial, and anti-inflammatory activities. However, the effect of TA on osteoclastogenesis and the underlying molecular mechanism remain unclear. Based on the key role of the NF-κB pathway in the regulation of osteoclastogenesis and the observation that TA exhibits an anti-inflammatory effect by inhibiting NF-κB activity, we speculated that TA could exert anti-osteoclastogenesis activity. Herein, TA could inhibit the RANKL-induced osteoclast differentiation and formation of F-actin rings in RAW 264.7 cells. Mechanistically, TA downregulated the expression of c-Src and TRAF6, and also suppressed the RANKL-stimulated canonical RANK signaling pathways, including AKT, MAPK (p38, JNK, and ERK), and NF-κB; ultimately, downregulating the expression of NFATc1 and c-Fos, the key transcriptional factors required for the expression of genes (e.g., TRAP, cathepsin K, β-Integrin, MMP-9, ATP6V0D2, and DC-STAMP) that govern osteoclastogenesis. Our findings demonstrated that TA could effectively inhibit RANKL-induced osteoclastogenesis via the downregulation of c-Src and TRAF6 and the inhibition of RANK signaling pathways. Thus, TA could serve as a novel osteoclastogenesis inhibitor and might have beneficial effects on bone health.
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Tian Y, Shao Q, Gu J, Tang Y, Bie M, Zhou Y, Cheng C, Liang Y, Zhang Q, Kang F. LncRNA-mRNA Expression Profiles of Osteoclast After Conditional Knockout HIF-1α. Front Genet 2022; 13:909095. [PMID: 35801079 PMCID: PMC9253292 DOI: 10.3389/fgene.2022.909095] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2022] [Accepted: 05/23/2022] [Indexed: 11/30/2022] Open
Abstract
Background: Osteoclasts, which are multinucleated cells formed by monocyte fusion, play a key role in bone resorption. Hypoxia-inducible factor (HIF)-1α is vital for the development of osteoclasts in hypoxic environments and during bone resorption. However, additional research is required to further study the HIF-1α-dependent regulation of osteoclast differentiation at the genetic level. Methods: In our study, RNA sequencing (RNA-seq) was used to identify the expression profiles of long noncoding RNAs (lncRNAs) and mRNAs in conditional HIF-1α-knockout osteoclasts. Results: A total of 1,320 mRNAs and 95 lncRNAs were differentially expressed. The expression of lncRNAs MSTRG.7566.12 and MSTRG.31769.2 were strongly negatively correlated with that of Mmp9, Ctsk, etc. Conclusion: Our research provides a basis for further understanding the role of mRNAs and lncRNAs in conditional HIF-1α-knockout osteoclasts, and many of these molecules may be potential targets for treating bone diseases related to HIF-1α.
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Affiliation(s)
- Yuanye Tian
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Qi Shao
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Jiahong Gu
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Yi Tang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Miaomiao Bie
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Yangyifan Zhou
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Chunan Cheng
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Yi Liang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Qian Zhang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Feiwu Kang
- Department of Oral and Maxillofacial Surgery, School and Hospital of Stomatology, Tongji University, Shanghai, China
- Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
- *Correspondence: Feiwu Kang,
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