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Shakel Z, Costa Lima SA, Reis S. Strategies to make human skin models based on cellular senescence for ageing research. Ageing Res Rev 2024; 100:102430. [PMID: 39032611 DOI: 10.1016/j.arr.2024.102430] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 06/25/2024] [Accepted: 07/15/2024] [Indexed: 07/23/2024]
Abstract
Human skin ageing is closely related to the ageing of the whole organism, and it's a continuous multisided process that is influenced not only by genetic and physiological factors but also by the cumulative impact of environmental factors. Currently, there is a scientific community need for developing skin models representing ageing processes to (i) enhance understanding on the mechanisms of ageing, (ii) discover new drugs for the treatment of age-related diseases, and (iii) develop effective dermo-cosmetics. Bioengineers worldwide are trying to reproduce skin ageing in the laboratory aiming to better comprehend and mitigate the senescence process. This review provides details on the main ageing molecular mechanisms and procedures to obtain in vitro aged skin models.
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Affiliation(s)
- Zinaida Shakel
- LAQV, REQUIMTE, Faculty of Pharmacy, University of Porto, Portugal
| | - Sofia A Costa Lima
- LAQV, REQUIMTE, ICBAS, School of Medicine and Biomedical Sciences, University of Porto, Portugal.
| | - Salette Reis
- LAQV, REQUIMTE, Faculty of Pharmacy, University of Porto, Portugal
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Chatterjee S, Rajasekar A. Preparation and Characterization of Ferulic Acid Hydrogel and Its Application as a Local Drug Delivery Agent in Periodontitis. Cureus 2024; 16:e60534. [PMID: 38887323 PMCID: PMC11181101 DOI: 10.7759/cureus.60534] [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: 04/07/2024] [Accepted: 05/17/2024] [Indexed: 06/20/2024] Open
Abstract
Introduction Periodontitis, a persistent inflammatory condition, impacts the tissues supporting teeth. Beyond mechanically eradicating the biofilm, additional host-modulating agents can aid in the treatment of periodontitis. Among these, gels are a very popular choice for use in the field of dentistry as these systems boast high biocompatibility and bioadhesiveness. These qualities make them easily administered and fabricated. They are typically placed into the periodontal site via wide-port needle syringes. Many investigations have demonstrated that hydrogels possess the ability for controlled drug release and aid in periodontal wound healing. Hence, this study aimed to develop a ferulic acid hydrogel and assess its effectiveness for managing periodontitis. Materials and methods Ferulic acid hydrogel was prepared followed by haemolysis assay and biocompatibility assay. After the in vitro analysis, a clinical trial was conducted: 20 patients were divided into Group A (comprising patients in whom scaling and root planing (SRP) was done) and Group B (comprising patients in whom SRP along with hydrogel application was done). Each patient's pocket depth (PD), clinical attachment loss (CAL), gingival index (GI), and plaque index (PI) were recorded at baseline and at three months. Intergroup and intragroup comparisons of the parameters were made. Results Ferulic acid hydrogels exhibit a minimal ratio of red blood cell destruction, indicating their low haemolytic activity. Beyond 94 hours, ferulic acid hydrogel demonstrates minimal toxicity towards human fibroblasts, suggesting it has good biocompatibility. When clinical parameters were compared after three months of treatment with SRP alone, significant reductions were observed in all parameters. However, when hydrogel application was done along with SRP, greater reduction was seen in terms of all clinical parameters indicating the efficacy of the ferulic acid hydrogel as an adjunct. Conclusion Ferulic acid has distinct haemolytic activity as well as good biocompatibility. Its use also led to a considerable reduction in all clinical parameters, necessitating its role as a local drug delivery agent in the treatment of periodontitis.
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Affiliation(s)
- Shubhangini Chatterjee
- Periodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
| | - Arvina Rajasekar
- Periodontics, Saveetha Dental College and Hospitals, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, IND
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Rovere M, Reverberi D, Arnaldi P, Palamà MEF, Gentili C. Spheroid size influences cellular senescence and angiogenic potential of mesenchymal stromal cell-derived soluble factors and extracellular vesicles. Front Bioeng Biotechnol 2023; 11:1297644. [PMID: 38162179 PMCID: PMC10756914 DOI: 10.3389/fbioe.2023.1297644] [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: 09/20/2023] [Accepted: 11/23/2023] [Indexed: 01/03/2024] Open
Abstract
Introduction: The secretome of mesenchymal stromal cells (MSCs) serves as an innovative tool employed in the regenerative medicine approach. In this particular context, three-dimensional (3D) culture systems are widely utilized to better replicate in vivo conditions and facilitate prolonged cell maintenance during culture. The use of spheroids enables the preservation of the classical phenotypical characteristics of MSCs. However, the distinct microenvironment within the spheroid may impact the secretome, thereby enhancing the angiogenic properties of adult MSCs that typically possess a reduced angiogenic potential compared to MSCs derived from perinatal tissues due to the hypoxia created in the internal region of the spheroid. Methods: In this study, large spheroids (2,600 cells, ∼300 μm diameter) and small spheroids (1,000 cells, ∼200 μm diameter) were used to examine the role of spheroid diameter in the generation of nutrients and oxygen gradients, cellular senescence, and the angiogenic potential of secreted factors and extracellular vesicles (EVs). Results: In this study, we demonstrate that large spheroids showed increased senescence and a secretome enriched in pro-angiogenic factors, as well as pro-inflammatory and anti-angiogenic cytokines, while small spheroids exhibited decreased senescence and a secretome enriched in pro-angiogenic molecules. We also demonstrated that 3D culture led to a higher secretion of EVs with classical phenotypic characteristics. Soluble factors and EVs from small spheroids exhibited higher angiogenic potential in a human umbilical vein endothelial cell (HUVEC) angiogenic assay. Discussion: These findings highlighted the necessity of choosing the appropriate culture system for obtaining soluble factors and EVs for specific therapeutic applications.
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Affiliation(s)
- Matteo Rovere
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | | | - Pietro Arnaldi
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
| | | | - Chiara Gentili
- Department of Experimental Medicine, University of Genoa, Genoa, Italy
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Mohammed AI, Sangha S, Nguyen H, Shin DH, Pan M, Park H, McCullough MJ, Celentano A, Cirillo N. Assessment of Oxidative Stress-Induced Oral Epithelial Toxicity. Biomolecules 2023; 13:1239. [PMID: 37627304 PMCID: PMC10452318 DOI: 10.3390/biom13081239] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2023] [Revised: 08/02/2023] [Accepted: 08/09/2023] [Indexed: 08/27/2023] Open
Abstract
Reactive oxygen species (ROS) are highly reactive molecules generated in living organisms and an excessive production of ROS culminates in oxidative stress and cellular damage. Notably, oxidative stress plays a critical role in the pathogenesis of a number of oral mucosal diseases, including oral mucositis, which remains one of cancer treatments' most common side effects. We have shown previously that oral keratinocytes are remarkably sensitive to oxidative stress, and this may hinder the development and reproducibility of epithelial cell-based models of oral disease. Here, we examined the oxidative stress signatures that parallel oral toxicity by reproducing the initial events taking place during cancer treatment-induced oral mucositis. We used three oral epithelial cell lines (an immortalized normal human oral keratinocyte cell line, OKF6, and malignant oral keratinocytes, H357 and H400), as well as a mouse model of mucositis. The cells were subjected to increasing oxidative stress by incubation with hydrogen peroxide (H2O2) at concentrations of 100 μM up to 1200 μM, for up to 24 h, and ROS production and real-time kinetics of oxidative stress were investigated using fluorescent dye-based probes. Cell viability was assessed using a trypan blue exclusion assay, a fluorescence-based live-dead assay, and a fluorometric cytotoxicity assay (FCA), while morphological changes were analyzed by means of a phase-contrast inverted microscope. Static and dynamic real-time detection of the redox changes in keratinocytes showed a time-dependent increase of ROS production during oxidative stress-induced epithelial injury. The survival rates of oral epithelial cells were significantly affected after exposure to oxidative stress in a dose- and cell line-dependent manner. Values of TC50 of 800 μM, 800 μM, and 400 μM were reported for H400 cells (54.21 ± 9.04, p < 0.01), H357 cells (53.48 ± 4.01, p < 0.01), and OKF6 cells (48.64 ± 3.09, p < 0.01), respectively. Oxidative stress markers (MPO and MDA) were also significantly increased in oral tissues in our dual mouse model of chemotherapy-induced mucositis. In summary, we characterized and validated an oxidative stress model in human oral keratinocytes and identified optimal experimental conditions for the study of oxidative stress-induced oral epithelial toxicity.
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Affiliation(s)
- Ali I. Mohammed
- Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia; (A.I.M.); (H.N.); (M.J.M.); (A.C.)
- College of Dentistry, The University of Tikrit, Tikrit 34001, Iraq
| | - Simran Sangha
- Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia; (A.I.M.); (H.N.); (M.J.M.); (A.C.)
| | - Huynh Nguyen
- Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia; (A.I.M.); (H.N.); (M.J.M.); (A.C.)
| | - Dong Ha Shin
- Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia; (A.I.M.); (H.N.); (M.J.M.); (A.C.)
| | - Michelle Pan
- Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia; (A.I.M.); (H.N.); (M.J.M.); (A.C.)
| | - Hayoung Park
- Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia; (A.I.M.); (H.N.); (M.J.M.); (A.C.)
| | - Michael J. McCullough
- Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia; (A.I.M.); (H.N.); (M.J.M.); (A.C.)
| | - Antonio Celentano
- Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia; (A.I.M.); (H.N.); (M.J.M.); (A.C.)
| | - Nicola Cirillo
- Melbourne Dental School, The University of Melbourne, Carlton, VIC 3053, Australia; (A.I.M.); (H.N.); (M.J.M.); (A.C.)
- College of Dentistry, University of Jordan, Amman 11942, Jordan
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Grandy C, Port F, Radzinski M, Singh K, Erz D, Pfeil J, Reichmann D, Gottschalk KE. Remodeling of the focal adhesion complex by hydrogen-peroxide-induced senescence. Sci Rep 2023; 13:9735. [PMID: 37322076 PMCID: PMC10272183 DOI: 10.1038/s41598-023-36347-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 06/01/2023] [Indexed: 06/17/2023] Open
Abstract
Cellular senescence is a phenotype characterized by cessation of cell division, which can be caused by exhaustive replication or environmental stress. It is involved in age-related pathophysiological conditions and affects both the cellular cytoskeleton and the prime cellular mechanosensors, focal adhesion complexes. While the size of focal adhesions increases during senescence, it is unknown if and how this is accompanied by a remodeling of the internal focal adhesion structure. Our study uses metal-induced energy transfer to study the axial dimension of focal adhesion proteins from oxidative-stress-induced senescent cells with nanometer precision, and compares these to unstressed cells. We influenced cytoskeletal tension and the functioning of mechanosensitive ion channels using drugs and studied the combined effect of senescence and drug intervention on the focal adhesion structure. We found that H2O2-induced restructuring of the focal adhesion complex indicates a loss of tension and altered talin complexation. Mass spectroscopy-based proteomics confirmed the differential regulation of several cytoskeletal proteins induced by H2O2 treatment.
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Affiliation(s)
- Carolin Grandy
- Institute of Experimental Physics, Ulm University, 89081, Ulm, Baden-Württemberg, Germany
| | - Fabian Port
- Institute of Experimental Physics, Ulm University, 89081, Ulm, Baden-Württemberg, Germany
| | - Meytal Radzinski
- Alexander Silberman Institute of Life Science, The Hebrew University of Jerusalem, Edmond J. Safra Campus-Givat Ram, 9190401, Jerusalem, Israel
| | - Karmveer Singh
- Department of Dermatology and Allergic Diseases, Ulm University, 89081, Ulm,, Baden-Württemberg, Germany
| | - Dorothee Erz
- Institute of Experimental Physics, Ulm University, 89081, Ulm, Baden-Württemberg, Germany
| | - Jonas Pfeil
- Institute of Experimental Physics, Ulm University, 89081, Ulm, Baden-Württemberg, Germany
| | - Dana Reichmann
- Alexander Silberman Institute of Life Science, The Hebrew University of Jerusalem, Edmond J. Safra Campus-Givat Ram, 9190401, Jerusalem, Israel
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Li L, Wang H, Yu D, Wang Y, Zhao Y, Yang H, Cao Y, Cao Y. Insulin-like growth factor binding protein 5 accelerate the senescence of periodontal ligament stem cells. Cell Tissue Bank 2023; 24:231-239. [PMID: 35939161 DOI: 10.1007/s10561-022-10030-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2022] [Accepted: 07/18/2022] [Indexed: 01/10/2023]
Abstract
Evidences have showed stem cell mediated tissue regeneration is a promising method for the treatment of periodontitis. Insulin-like growth factor binding proteins-5 (IGFBP5) is a member of the insulin growth factor (IGFs) family and plays a regulatory role in cell proliferation and differentiation. Our previous study showed that IGFBP5 can promote osteogenic differentiation of periodontal ligament stem cells (PDLSCs) and enhance periodontal tissue regeneration mediated by PDLSCs. However, the function of IGFBP5 in the process of PDLSCs senescence remains unclear. The present study showed IGFBP5 mRNA level was highly expressed in passage-induced aged PDLSCs cells. IGFBP5 knockdown decreased the ratio of senescence associated β-galactosidase (SA-β-Gal) positive cells, enhanced the activity of TERT, and down-regulated the expression levels of P16, P21, P53 mRNA and protein. Overexpression of IGFBP5 increased the ratio of SA-β-Gal positive staining PDLSCs, decreased the activity of telomerase TERT, and up-regulated the expression levels of P16, P21, P53 mRNA and protein related to PDLSCs senescence. In conclusion, IGFBP5 can accelerate the senescence of PDLSCs, indicating the potential target for maintaining the "young state" of stem cells.
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Affiliation(s)
- Le Li
- Department of Stomatology, Tsinghua University Hospital, Beijing, 100084, China
| | - Haiyan Wang
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Dianqin Yu
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Yantong Wang
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Yingchu Zhao
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Haoqing Yang
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Yangyang Cao
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China
| | - Yu Cao
- Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China. .,Department of General Dentistry, Capital Medical University School of Stomatology, Tian Tan Xi Li No.4, Beijing, 100050, People's Republic of China.
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Anoy MMI, Gelston S, Mohamed A, Flurin L, Raval YS, Greenwood-Quaintance K, Patel R, Lewandowski Z, Beyenal H. Hypochlorous acid produced at the counter electrode inhibits catalase and increases bactericidal activity of a hydrogen peroxide generating electrochemical bandage. Bioelectrochemistry 2022; 148:108261. [PMID: 36115186 PMCID: PMC10080710 DOI: 10.1016/j.bioelechem.2022.108261] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2022] [Revised: 08/22/2022] [Accepted: 09/05/2022] [Indexed: 11/20/2022]
Abstract
Previously, an electrochemical bandage (e-bandage) that uses a three-electrode system to produce hydrogen peroxide (H2O2) electrochemically on its working electrode was developed as a potential strategy for treating biofilms; it showed activity in reducing biofilms in an agar biofilm model. Xanthan gum-based hydrogel, including NaCl, was used as the electrolyte. While H2O2 generated at the working electrode in the vicinity of a biofilm is a main mechanism of activity, the role of the counter electrode was not explored. The goal of this research was to characterize electrochemical reactions occurring on the counter electrode of the e-bandage. Counter electrode potential varied between 1.2 and 1.5 VAg/AgCl; ∼125 µM hypochlorous acid (HOCl) was generated within 24 h in the e-bandage system. When HOCl was not produced on the counter electrode (achieved by removing NaCl from the hydrogel), reduction of Acinetobacter baumannii BAA-1605 biofilm was 1.08 ± 0.38 log10 CFU/cm2 after 24 h treatment, whereas when HOCl was produced, reduction was 3.87 ± 1.44 log10 CFU/cm2. HOCl inhibited catalase activity, abrogating H2O2 decomposition. In addition to H2O2 generation, the previously described H2O2-generating e-bandage generates HOCl on the counter electrode, enhancing its biocidal activity.
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Affiliation(s)
- Md Monzurul Islam Anoy
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA.
| | - Suzanne Gelston
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA.
| | - Abdelrhman Mohamed
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA.
| | - Laure Flurin
- Division of Clinical Microbiology, Mayo Clinic, Rochester, MN, USA.
| | - Yash S Raval
- Division of Clinical Microbiology, Mayo Clinic, Rochester, MN, USA.
| | | | - Robin Patel
- Division of Clinical Microbiology, Mayo Clinic, Rochester, MN, USA; Division of Public Health, Infectious Diseases and Occupational Medicine, Mayo Clinic, Rochester, MN, USA.
| | - Zbigniew Lewandowski
- Center for Biofilm Engineering, Montana State University-Bozeman, Bozeman, MT, USA.
| | - Haluk Beyenal
- The Gene and Linda Voiland School of Chemical Engineering and Bioengineering, Washington State University, Pullman, WA, USA.
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Guerra Silva B, Pereira R, Burga Sánchez J, Guanipa Ortiz MI, Baggio-Aguiar FH, Leite Lima DAN. Effect of Different Bleaching Gels Thickeners on Cytotoxicity to Human Gingival Fibroblasts and Enamel Physical Properties: an in Situ Study. Acta Stomatol Croat 2022; 56:363-375. [PMID: 36713272 PMCID: PMC9873007 DOI: 10.15644/asc56/4/3] [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: 06/16/2022] [Accepted: 11/22/2022] [Indexed: 12/29/2022] Open
Abstract
Objective This study evaluated in vitro, the effects of carbamide peroxide 10% (CP) associated with Carbopol® (CP-ct) and Aristoflex® (CP-at) thickeners on human gingival fibroblasts (HGF) cytotoxicity and assessed in situ their effects on dental enamel. Material and methods The cytotoxicity was analyzed using MTT - Vybrant® proliferation test. For in situ stage, 144 bovine enamel/dentin blocks were randomized into seven groups (n=12). Samples were stained, fixed in intraoral palatal devices and bleached for 4 h, during 14 days, with: Carbopol thickener (ct), Aristoflex thickener (at), CP-ct, CP-at, CP without thickener (CP-wot), Commercial CP (CP-com). The samples had their microhardness (SMH), roughness (Ra) and color analyzed using a microdurometer, a rugosimeter and a spectrophotometer, respectively. The analyses were performed at baseline and 24-h after completion of tooth bleaching. Results Different thickeners were similar regarding their cytotoxicity. The experimental gels with Carbopol exhibited lower SMH values, while the groups treated with CP exhibited higher Ra values. For the color change results, the groups treated with CP had values above the acceptability and perceptibility limits. Conclusion CP-at was able to promote an effective bleaching with less alterations of the tooth surface compared to the CP-ct. Hence, Aristoflex stands as a promising thickener in conjunction with CP in order to preserve the physical properties of dental enamel after home bleaching.
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Affiliation(s)
- Bruna Guerra Silva
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Renata Pereira
- Department of Restorative Dentistry, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
| | - Jonny Burga Sánchez
- Department of Physiological Sciences, Piracicaba Dental School, University of Campinas, Piracicaba, SP, Brazil
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Tripodi N, Sidiroglou F, Fraser S, Husaric M, Kiatos D, Apostolopoulos V, Feehan J. The effects of polarized photobiomodulation on cellular viability, proliferation, mitochondrial membrane potential and apoptosis in human fibroblasts: Potential applications to wound healing. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2022; 236:112574. [PMID: 36179581 DOI: 10.1016/j.jphotobiol.2022.112574] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 09/05/2022] [Accepted: 09/20/2022] [Indexed: 06/16/2023]
Abstract
Photobiomodulation (PBM) is a widely used therapeutic intervention used to treat several chronic conditions. Despite this, fundamental research underpinning its effectiveness is lacking, highlighted by the lack of a definitive mechanism of action. Additionally, there are many treatment variables which remain underexplored, one of those being the effect of polarization the property of light that specifies the direction of the oscillating electric field. When applied to PBM, using linearly polarized light, when compared to otherwise identical non-polarized light, may enhance its biological efficacy. As such, we investigated the potential biological effects of polarized PBM when compared to non-polarized and non-irradiated controls in the domains of cellular viability, proliferation, apoptosis and mitochondrial membrane potential (ΔΨ) within cells exposed to oxidative stress. It was noted that polarized PBM, when compared to non-polarized PBM and non-irradiated controls, demonstrated mostly increased levels of cellular proliferation and ΔΨ, whilst decreasing the amount of cellular apoptosis. These results indicate that polarization may have utility in the clinical application of PBM. Future research is needed to further elucidate the underpinning mechanisms of PBM and polarization.
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Affiliation(s)
- Nicholas Tripodi
- Institute for Health and Sport, Victoria University, Melbourne, Australia; First Year College, Victoria University, Melbourne, Australia; Australian Institute for Musculoskeletal Science (AIMSS), The University of Melbourne and Western Health, St. Albans, Australia
| | - Fotios Sidiroglou
- First Year College, Victoria University, Melbourne, Australia; Institute for Sustainable Industries and Liveable Cities, Victoria University, Melbourne, Australia
| | - Sarah Fraser
- Institute for Health and Sport, Victoria University, Melbourne, Australia
| | - Maja Husaric
- Institute for Health and Sport, Victoria University, Melbourne, Australia; First Year College, Victoria University, Melbourne, Australia
| | - Dimitrios Kiatos
- College of Health and Biomedicine, Victoria University, Melbourne, Australia
| | - Vasso Apostolopoulos
- Institute for Health and Sport, Victoria University, Melbourne, Australia; Australian Institute for Musculoskeletal Science (AIMSS), The University of Melbourne and Western Health, St. Albans, Australia
| | - Jack Feehan
- Institute for Health and Sport, Victoria University, Melbourne, Australia; Australian Institute for Musculoskeletal Science (AIMSS), The University of Melbourne and Western Health, St. Albans, Australia; Department of Medicine-Western Health, Melbourne Medical School, The University of Melbourne, St. Albans, Australia.
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Mahbubfam S, Rezaie J, Nejati V. Crosstalk between exosomes signaling pathway and autophagy flux in senescent human endothelial cells. Tissue Cell 2022; 76:101803. [DOI: 10.1016/j.tice.2022.101803] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2022] [Revised: 03/31/2022] [Accepted: 04/19/2022] [Indexed: 12/19/2022]
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Furukawa M, Matsuda K, Aoki Y, Yamada M, Wang J, Watanabe M, Kurosawa M, Shikama Y, Matsushita K. Analysis of senescence in gingival tissues and gingival fibroblast cultures. Clin Exp Dent Res 2022; 8:939-949. [PMID: 35491709 PMCID: PMC9382052 DOI: 10.1002/cre2.581] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/30/2022] [Accepted: 04/03/2022] [Indexed: 11/14/2022] Open
Abstract
Objective To determine senescence‐associated changes in the gingival tissues of aged mice and gingival fibroblast cultures. Materials and Methods The production of senescence‐associated β‐galactosidase (SA‐β‐gal) and mRNA expression of p16, p21, interleukin (IL)‐1β, and tumor necrosis factor α (TNF‐α) were evaluated in gingival tissues, gingival fibroblasts of 10‐ and 20‐month‐old C57BL/6NCrl mice, and multiple‐passaged and hydrogen peroxide‐stimulated human gingival fibroblasts (HGFs). Changes in molecular expression in HGF cultures due to senescent cell elimination by the senolytic drug ABT‐263 (Navitoclax) were analyzed. Results Compared to 10‐week‐old mice, the 20‐month‐old mice had higher numbers of M1 macrophages. The proportion of cells expressing SA‐β‐gal were also higher in 20‐ month‐old mice than in 10‐week‐old‐mice. Gingival fibroblasts in 20‐month‐old mice expressed less collagen 1a1, collagen 4a1, and collagen 4a2 mRNA than those in 10‐week‐old mice. Compared to control cells, H2O2 treated HGF cells expressed higher levels of SA‐β‐gal and p16, p21, IL‐1β, and TNF‐α. Furthermore, ABT‐263 suppressed HGF cell expression of cytokines after senescence induction. Conclusions Senescence‐associated changes were observed in the gingival tissues of aged mice and HGF cultures. In addition, the potential of senolytic drugs to modify aging‐related changes in the gingiva was shown.
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Affiliation(s)
- Masae Furukawa
- Department of Oral Disease Research National Center for Geriatrics and Gerontology Obu Japan
| | | | - Yu Aoki
- Daiichi Sankyo Healthcare Co., Ltd. Tokyo Japan
| | - Mitsuyoshi Yamada
- Department of Oral Disease Research National Center for Geriatrics and Gerontology Obu Japan
- Department of Operative Dentistry, School of Dentistry Aichi Gakuin University Nagoya Japan
| | - Jingshu Wang
- Department of Oral Disease Research National Center for Geriatrics and Gerontology Obu Japan
| | - Maki Watanabe
- Department of Oral Disease Research National Center for Geriatrics and Gerontology Obu Japan
| | - Mie Kurosawa
- Department of Oral Disease Research National Center for Geriatrics and Gerontology Obu Japan
| | - Yosuke Shikama
- Department of Oral Disease Research National Center for Geriatrics and Gerontology Obu Japan
| | - Kenji Matsushita
- Department of Oral Disease Research National Center for Geriatrics and Gerontology Obu Japan
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Shaban SA, Rezaie J, Nejati V. Exosomes Derived from Senescent Endothelial Cells Contain Distinct Pro-angiogenic miRNAs and Proteins. Cardiovasc Toxicol 2022; 22:592-601. [PMID: 35441341 DOI: 10.1007/s12012-022-09740-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Accepted: 03/29/2022] [Indexed: 12/31/2022]
Abstract
Exosomes from senescence cells play pivotal roles in endothelium dysfunction. We investigated the exosomal angiogenic cargo of endothelial cells (ECs) in a model of senescence in vitro. After inducing aging by H2O2, the expression of P53, P21, and P16 was investigated by western blotting, while the expression of FMR1, miR-21, and miR-126 were measured by real-time PCR (q-PCR). Oil Red O dye was used to stain cells. Acetylcholinesterase (AChE) assay, transmission electron microscopy (TEM), and western blotting characterized Exosomes. Exosomal miR-21, miR-126, matrix metallopeptidase-9 (MMP-9), and tumor necrosis factor- ɑ (TNF-ɑ) proteins were measured by Q-PCR and western blotting. A wound-healing assay was used to explore the effect of exosomes on ECs migration rate. The results showed that the expression of P53, P21, P16, FMR1, and miR-21 was increased in treated cells as compared with control cells (P < 0.05). In addition, the expression of miR-126 was decreased in treated cells (P < 0.05). The number of Oil Red O-positive-treated cells increased (P < 0.05). The AChE activity of exosomes from treated cells was increased (P < 0.05). In comparison with control cells, an increase in the expression levels of exosomal miR-21 and TNF-ɑ of treated cells coincided with a decrease in the expression levels of miR-126 and MMP-9 levels (P < 0.05). We found that the migration rate of ECs co-cultured with exosomes from treated cells was decreased (P < 0.05). The data indicate ECs under H2O2 condition produce exosomes with distinct cargo that may be useful as a biomarker of age-related vascular disease.
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Affiliation(s)
| | - Jafar Rezaie
- Solid Tumor Research Center, Cellular and Molecular Medicine Institute, Urmia University of Medical Sciences, Urmia, Iran
| | - Vahid Nejati
- Department of Biology, Urmia University, Urmia, Post Box 165, 5756151818, Iran.
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13
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Li N, Wang Z. Integrative Analysis of Deregulated miRNAs Reveals Candidate Molecular Mechanisms Linking H. pylori Infected Peptic Ulcer Disease with Periodontitis. DISEASE MARKERS 2022; 2022:1498525. [PMID: 35132337 PMCID: PMC8817886 DOI: 10.1155/2022/1498525] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 01/17/2022] [Indexed: 11/18/2022]
Abstract
OBJECTIVE Periodontitis is a highly prevalent oral infectious disease and has been increasingly associated with H. pylori infection, gastric inflammation, and gastric cancer but little is known about epigenetic machinery underlying this potentially bidirectional association. The present study is aimed at identifying key deregulated miRNA, their associated genes, signaling pathways, and compounds linking periodontitis with H. pylori-associated peptic ulcer disease. METHODS miRNA expression datasets for periodontitis-affected and H. pylori-associated peptic ulcer disease-affected tissues were sought from the GEO database. Differentially expressed miRNA (DEmiRNAs) were identified and the overlapping, shared-DEmiRNA between both datasets were determined. Shared-DEmiRNA-target networks construction and functional analyses were constructed using miRNet 2.0, including shared-DEmiRNA-gene, shared-DEmiRNA-transcription factor (TF), and shared-DEmiRNA-compound networks. Functional enrichment analysis for shared DEmiRNA-gene and shared DEmiRNA-TF networks was performed using the KEGG, Reactome, and Geno Ontology (GO) pathways. RESULTS 11 shared-DEmiRNAs were identified, among which 9 showed similar expression patterns in both diseases, and 7 were overexpressed. miRNA hsa-hsa-mir-155-5p and hsa-mir-29a-3p were top miRNA nodes in both gene and TF networks. The topmost candidate miRNA-deregulated genes were PTEN, CCND1, MDM2, TNRC6A, and SCD while topmost deregulated TFs included STAT3, HIF1A, EZH2, CEBPA, and RUNX1. Curcumin, 5-fluorouracil, and the gallotanin 1,2,6-Tri-O-galloyl-beta-D-glucopyranose emerged as the most relevant linkage compound targets. Functional analyses revealed multiple cancer-associated pathways, PI3K pathways, kinase binding, and transcription factor binding among as enriched by the network-associated genes and TFs. CONCLUSION Integrative analysis of deregulated miRNAs revealed candidate molecular mechanisms comprising of top miRNA, their gene, and TF targets linking H. pylori-infected peptic ulcer disease with periodontitis and highlighted compounds targeting both diseases. These findings provide basis for directing future experimental research.
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Affiliation(s)
- Ning Li
- Department of Prosthetic Dentistry, The Affiliated Stomatological Hospital of Wenzhou Medical University, Longyao Avenue No. 1288, Yongzhong Street, Longwan District, Wenzhou 325000, Zhejiang Province, China
| | - Zhen Wang
- Department of Stomatology, The Quzhou Affiliated Hospital of Wenzhou Medical University (Quzhou People's Hospital), Kecheng District, Minjiang Avenue No. 100, Quzhou 332400, Zhejiang Province, China
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14
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Wu DD, Ngowi EE, Zhai YK, Wang YZ, Khan NH, Kombo AF, Khattak S, Li T, Ji XY. Role of Hydrogen Sulfide in Oral Disease. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2022; 2022:1886277. [PMID: 35116090 PMCID: PMC8807043 DOI: 10.1155/2022/1886277] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/16/2021] [Revised: 11/20/2021] [Accepted: 12/14/2021] [Indexed: 12/13/2022]
Abstract
Oral diseases are among the most common human diseases yet less studied. These diseases affect both the physical, mental, and social health of the patients resulting in poor quality of life. They affect all ages, although severe stages are mostly observed in older individuals. Poor oral hygiene, genetics, and environmental factors contribute enormously to the development and progression of these diseases. Although there are available treatment options for these diseases, the recurrence of the diseases hinders their efficiency. Oral volatile sulfur compounds (VSCs) are highly produced in oral cavity as a result of bacteria activities. Together with bacteria components such as lipopolysaccharides, VSCs participate in the progression of oral diseases by regulating cellular activities and interfering with the immune response. Hydrogen sulfide (H2S) is a gaseous neurotransmitter primarily produced endogenously and is involved in the regulation of cellular activities. The gas is also among the VSCs produced by oral bacteria. In numerous diseases, H2S have been reported to have dual effects depending on the cell, concentration, and donor used. In oral diseases, high production and subsequent utilization of this gas have been reported. Also, this high production is associated with the progression of oral diseases. In this review, we will discuss the production of H2S in oral cavity, its interaction with cellular activities, and most importantly its role in oral diseases.
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Affiliation(s)
- Dong-Dong Wu
- School of Stomatology, Henan University, Kaifeng, Henan 475004, China
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
- Kaifeng Municipal Key Laboratory of Cell Signal Transduction, Henan Provincial Engineering Centre for Tumor Molecular Medicine, Henan University, Kaifeng, Henan 475004, China
| | - Ebenezeri Erasto Ngowi
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
- Kaifeng Municipal Key Laboratory of Cell Signal Transduction, Henan Provincial Engineering Centre for Tumor Molecular Medicine, Henan University, Kaifeng, Henan 475004, China
- Department of Biological Sciences, Faculty of Science, Dar es Salaam University College of Education, Dar es Salaam 2329, Tanzania
| | - Yuan-Kun Zhai
- School of Stomatology, Henan University, Kaifeng, Henan 475004, China
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Yi-Zhen Wang
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
- Kaifeng Municipal Key Laboratory of Cell Signal Transduction, Henan Provincial Engineering Centre for Tumor Molecular Medicine, Henan University, Kaifeng, Henan 475004, China
| | - Nazeer Hussain Khan
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
- School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Ahmad Fadhil Kombo
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
- School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Saadullah Khattak
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
- School of Life Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Tao Li
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
- Kaifeng Key Laboratory of Infection and Biological Safety, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
| | - Xin-Ying Ji
- Henan International Joint Laboratory for Nuclear Protein Regulation, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
- Kaifeng Key Laboratory of Infection and Biological Safety, School of Basic Medical Sciences, Henan University, Kaifeng, Henan 475004, China
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15
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Garg M, Gupta A, Sharma AL, Singh S. Advancements in 2D Materials Based Biosensors for Oxidative Stress Biomarkers. ACS APPLIED BIO MATERIALS 2021; 4:5944-5960. [DOI: 10.1021/acsabm.1c00625] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Mayank Garg
- CSIR- Central Scientific Instruments Organisation, Sector 30-C, Chandigarh 160030, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Arushi Gupta
- CSIR- Central Scientific Instruments Organisation, Sector 30-C, Chandigarh 160030, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Amit L. Sharma
- CSIR- Central Scientific Instruments Organisation, Sector 30-C, Chandigarh 160030, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Suman Singh
- CSIR- Central Scientific Instruments Organisation, Sector 30-C, Chandigarh 160030, India
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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16
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Iannuzzi AM, Giacomelli C, De Leo M, Russo L, Camangi F, De Tommasi N, Braca A, Martini C, Trincavelli ML. Cornus sanguinea Fruits: a Source of Antioxidant and Antisenescence Compounds Acting on Aged Human Dermal and Gingival Fibroblasts. PLANTA MEDICA 2021; 87:879-891. [PMID: 33860477 DOI: 10.1055/a-1471-6666] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Five new compounds, a flavonol glycoside ( 1: ), a megastigmane ( 2: ), 2 cyclohexylethanoids ( 3, 4: ), and a phenylethanoid derivative ( 5: ), together with 15 known compounds ( 6: - 20: ) including flavonoid glycosides, cyclohexylethanoids, and phenolic compounds, have been isolated from Cornus sanguinea drupes. All the structures have been determined by 1D and 2D NMR spectroscopic analysis and mass spectrometry data. The antioxidant capability of the most representative isolated compounds was evaluated in the hydrogen peroxide (H2O2)-induced premature cellular senescence model of human dermal and gingival fibroblasts. Several derivatives counteracted the increase of reactive oxigen species (ROS) production in both cellular models. Among the most promising, compounds 8, 14: , and 20: were able to counteract cell senescence, decreasing the expression of p21 and p53. Furthermore, compound 14: decreased the expression of inflammatory cytokines (IL-6) in both cell models and counteracted the decrease of collagen expression induced by the H2O2 in dermal human fibroblasts. These data highlight the anti-aging properties of several isolated compounds from C. sanguinea drupes, supporting its possible use in the cure of skin or periodontitis lesions.
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Affiliation(s)
| | - Chiara Giacomelli
- Dipartimento di Farmacia, Università di Pisa, Pisa, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute", Università di Pisa, Pisa, Italy
- CISUP, Centre for Instrumentation Sharing, Pisa, Italy
| | - Marinella De Leo
- Dipartimento di Farmacia, Università di Pisa, Pisa, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute", Università di Pisa, Pisa, Italy
- CISUP, Centre for Instrumentation Sharing, Pisa, Italy
| | - Lara Russo
- Dipartimento di Farmacia, Università di Pisa, Pisa, Italy
| | - Fabiano Camangi
- Scuola Superiore Sant'Anna di Studi Universitari e di Perfezionamento, Pisa, Italy
| | | | - Alessandra Braca
- Dipartimento di Farmacia, Università di Pisa, Pisa, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute", Università di Pisa, Pisa, Italy
- CISUP, Centre for Instrumentation Sharing, Pisa, Italy
| | - Claudia Martini
- Dipartimento di Farmacia, Università di Pisa, Pisa, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute", Università di Pisa, Pisa, Italy
- CISUP, Centre for Instrumentation Sharing, Pisa, Italy
| | - Maria Letizia Trincavelli
- Dipartimento di Farmacia, Università di Pisa, Pisa, Italy
- Centro Interdipartimentale di Ricerca "Nutraceutica e Alimentazione per la Salute", Università di Pisa, Pisa, Italy
- CISUP, Centre for Instrumentation Sharing, Pisa, Italy
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17
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Hettinger ZR, Kargl CK, Shannahan JH, Kuang S, Gavin TP. Extracellular vesicles released from stress-induced prematurely senescent myoblasts impair endothelial function and proliferation. Exp Physiol 2021; 106:2083-2095. [PMID: 34333817 DOI: 10.1113/ep089423] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2021] [Accepted: 07/27/2021] [Indexed: 12/28/2022]
Abstract
NEW FINDINGS What is the central question of this study? What is the impact of stress-induced premature senescence on skeletal muscle myoblast-derived extracellular vesicles (EVs) and myoblast-endothelial cell crosstalk? What is the main finding and its importance? Hydrogen peroxide treatment of human myoblasts induced stress-induced premature senescence (SIPS) and increased the release of exosome-sized EVs (30-150 nm in size) five-fold compared to untreated controls. Treatment of SIPS myoblast-derived EVs on endothelial cells increased senescence markers and decreased proliferation. Gene expression analysis of SIPS myoblast-derived EVs revealed a four-fold increase in senescence factor transforming growth factor-β. These results highlight potential mechanisms by which senescence imparts deleterious effects on the cellular microenvironment. ABSTRACT Cellular senescence contributes to numerous diseases through the release of pro-inflammatory factors as part of the senescence-associated secretory phenotype (SASP). In skeletal muscle, resident muscle progenitor cells (satellite cells) express markers of senescence with advancing age and in response to various pathologies, which contributes to reduced regenerative capacities in vitro. Satellite cells regulate their microenvironment in part through the release of extracellular vesicles (EVs), but the effect of senescence on EV signaling is unknown. Primary human myoblasts were isolated following biopsies of the vastus lateralis from young healthy subjects. Hydrogen peroxide (H2 O2 ) treatment was used to achieve stress-induced premature senescence (SIPS) of myoblasts. EVs secreted by myoblasts with and without H2 O2 treatment were isolated, analysed and used to treat human umbilical vein endothelial cells (HUVECs) to assess senescence and angiogenic impact. H2 O2 treatment of primary human myoblasts in vitro increased markers of senescence (β-galactosidase and p21Cip1 ), decreased proliferation and increased exosome-like EV (30-150 nm) release approximately five-fold. In HUVECs, EV treatment from H2 O2 -treated myoblasts increased markers of senescence (β-galactosidase and transforming growth factor β), decreased proliferation and impaired HUVEC tube formation. Analysis of H2 O2 -treated myoblast-derived EV mRNA revealed a nearly four-fold increase in transforming growth factor β expression. Our novel results highlight the impact of SIPS on myoblast communication and identify a VasoMyo Crosstalk by which SIPS myoblast-derived EVs impair endothelial cell function in vitro.
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Affiliation(s)
- Zachary R Hettinger
- Max E. Wastl Human Performance Laboratory, Department of Health and Kinesiology, College of Health and Human Sciences, Purdue University, West Lafayette, IN, USA
| | - Christopher K Kargl
- Max E. Wastl Human Performance Laboratory, Department of Health and Kinesiology, College of Health and Human Sciences, Purdue University, West Lafayette, IN, USA
| | - Jonathan H Shannahan
- School of Health Sciences, College of Health and Human Sciences, Purdue University, West Lafayette, IN, USA
| | - Shihuan Kuang
- Department of Animal Sciences, College of Agriculture, Purdue University, West Lafayette, IN, USA
| | - Timothy P Gavin
- Max E. Wastl Human Performance Laboratory, Department of Health and Kinesiology, College of Health and Human Sciences, Purdue University, West Lafayette, IN, USA
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18
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Weng Y, Wang H, Li L, Feng Y, Xu S, Wang Z. Trem2 mediated Syk-dependent ROS amplification is essential for osteoclastogenesis in periodontitis microenvironment. Redox Biol 2020; 40:101849. [PMID: 33486152 PMCID: PMC7823053 DOI: 10.1016/j.redox.2020.101849] [Citation(s) in RCA: 48] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2020] [Revised: 12/04/2020] [Accepted: 12/24/2020] [Indexed: 12/20/2022] Open
Abstract
Periodontitis is the sixth most prevalent diseases around the globe, which is closely related to many systemic diseases and affects general health. As the leading cause of tooth loss, periodontitis is characterized by irreversible alveolar bone loss and activated osteoclastogenic process, which might be closely related to the activated intracellular reactive oxygen species (ROS) in osteoclasts. Here, we demonstrated triggering receptor expressed on myeloid cells 2 (Trem2) as a key regulator of osteoclastogenesis with the regulation of intracellular ROS signals in periodontitis. In the present study, the expression of Trem2 was significantly upregulated in human alveolar bones diagnosed with chronic periodontitis, as assessed by RNA-seq. In the mice model of periodontitis, the alveolar bone resorption was impeded in the presence of the conditional knockout of Trem2 in osteoclasts. Furthermore, we identified Trem2/DAP12/Syk-dependent cascade as a vital intracellular signaling for the amplification of reactive oxygen species (ROS) signals in osteoclastogenesis, while the accumulation of soluble Aβ42 oligomers (Aβo) in periodontitis microenvironment further strengthened the signals and enhanced osteoclastogenesis through direct interactions with Trem2. Collectively, Trem2 mediated ROS signal amplification cascade was crucial in the process of osteoclastogenesis in periodontitis, suggesting the potential of Trem2 as a target for the prevention and treatment of bone destruction in periodontitis.
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Affiliation(s)
- Yuteng Weng
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Haicheng Wang
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Lin Li
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Yanhuizhi Feng
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Shuyu Xu
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China
| | - Zuolin Wang
- Department of Implantology, School and Hospital of Stomatology, Tongji University, Shanghai Engineering Research Center of Tooth Restoration and Regeneration, Shanghai, China.
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19
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Graceffa V. Therapeutic Potential of Reactive Oxygen Species: State of the Art and Recent Advances. SLAS Technol 2020; 26:140-158. [PMID: 33345675 DOI: 10.1177/2472630320977450] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
In the last decade, several studies have proven that when at low concentration reactive oxygen species (ROS) show an adaptive beneficial effect and posited the idea that they can be utilized as inexpensive and convenient inducers of tissue regeneration. On the other hand, the recent discovery that cancer cells are more sensitive to oxidative damage paved the way for their use in the selective killing of tumor cells, and sensors to monitor ROS production during cancer treatment are under extensive investigation. Nevertheless, although ROS-activated signaling pathways are well established, less is known about the mechanisms underlying the switch from an anabolic to a cytotoxic response. Furthermore, a high variability in biological response is observed between different modalities of administration, cell types, donor ages, eventual concomitant diseases, and external microenvironment. On the other hand, available preclinical studies are scarce, whereas the quest for the most suitable systems for in vivo delivery is still elusive. Furthermore, new strategies to control the temporal pattern of ROS release need to be developed, if considering their tumorigenic potential. This review initially discusses ROS mechanisms of action and their potential application in stem cell biology, tissue engineering, and cancer therapy. It then outlines the state of art of ROS-based drugs and identifies challenges faced in translating ROS research into clinical practice.
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Affiliation(s)
- Valeria Graceffa
- Cellular Health and Toxicology Research Group (CHAT), Institute of Technology Sligo, Bellanode, Sligo, Ireland.,Department of Life Sciences, Institute of Technology Sligo, Bellanode, Sligo, Ireland
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20
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Aquino-Martinez R, Khosla S, Farr JN, Monroe DG. Periodontal Disease and Senescent Cells: New Players for an Old Oral Health Problem? Int J Mol Sci 2020; 21:E7441. [PMID: 33050175 PMCID: PMC7587987 DOI: 10.3390/ijms21207441] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Revised: 09/30/2020] [Accepted: 10/07/2020] [Indexed: 12/19/2022] Open
Abstract
The recent identification of senescent cells in periodontal tissues has the potential to provide new insights into the underlying mechanisms of periodontal disease etiology. DNA damage-driven senescence is perhaps one of the most underappreciated delayed consequences of persistent Gram-negative bacterial infection and inflammation. Although the host immune response rapidly protects against bacterial invasion, oxidative stress generated during inflammation can indirectly deteriorate periodontal tissues through the damage to vital cell macromolecules, including DNA. What happens to those healthy cells that reside in this harmful environment? Emerging evidence indicates that cells that survive irreparable genomic damage undergo cellular senescence, a crucial intermediate mechanism connecting DNA damage and the immune response. In this review, we hypothesize that sustained Gram-negative bacterial challenge, chronic inflammation itself, and the constant renewal of damaged tissues create a permissive environment for the abnormal accumulation of senescent cells. Based on emerging data we propose a model in which the dysfunctional presence of senescent cells may aggravate the initial immune reaction against pathogens. Further understanding of the role of senescent cells in periodontal disease pathogenesis may have clinical implications by providing more sophisticated therapeutic strategies to combat tissue destruction.
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Affiliation(s)
- Ruben Aquino-Martinez
- Department of Medicine, Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; (S.K.); (J.N.F.); (D.G.M.)
| | - Sundeep Khosla
- Department of Medicine, Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; (S.K.); (J.N.F.); (D.G.M.)
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN 55905, USA
| | - Joshua N. Farr
- Department of Medicine, Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; (S.K.); (J.N.F.); (D.G.M.)
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN 55905, USA
| | - David G. Monroe
- Department of Medicine, Division of Endocrinology, Mayo Clinic College of Medicine, Rochester, MN 55905, USA; (S.K.); (J.N.F.); (D.G.M.)
- Robert and Arlene Kogod Center on Aging, Mayo Clinic, Rochester, MN 55905, USA
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21
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Sharma R, Padwad Y. Probiotic bacteria as modulators of cellular senescence: emerging concepts and opportunities. Gut Microbes 2020; 11:335-349. [PMID: 31818183 PMCID: PMC7524351 DOI: 10.1080/19490976.2019.1697148] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023] Open
Abstract
Probiotic bacteria are increasingly gaining importance in human nutrition owing to their multifaceted health beneficial effects. Studies have also shown that probiotic supplementation is useful in mitigating age-associated oxi-inflammatory stress, immunosenescence, and gut dysbiosis thereby promoting health and longevity. However, our current understanding of the process of aging suggests a strong interrelationship between the accumulation of senescent cells and the development of aging phenotype, including the predisposition to age-related disorders. The present review studies the documented pro-longevity effects of probiotics and highlights how these beneficial attributes of probiotics could be related to the mitigation of cellular senescence. We present a perspective that to fully understand and comprehend the anti-aging characteristics of probiotic bacteria; it is imperative that probiotics or their synbiotic amalgamation with plant polyphenols, be studied under the purview of cellular senescence, that may ultimately help devise probiotic-based anti-senescence strategies.
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Affiliation(s)
- Rohit Sharma
- Pharmacology and Toxicology Laboratory, Food & Nutraceutical Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India,CONTACT Rohit Sharma Food & Nutraceutical Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur176061, India
| | - Yogendra Padwad
- Pharmacology and Toxicology Laboratory, Food & Nutraceutical Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur, India
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22
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Sharma R, Padwad Y. Perspectives of the potential implications of polyphenols in influencing the interrelationship between oxi-inflammatory stress, cellular senescence and immunosenescence during aging. Trends Food Sci Technol 2020. [DOI: 10.1016/j.tifs.2020.02.004] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
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23
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Iannuzzi AM, Giacomelli C, De Leo M, Pietrobono D, Camangi F, De Tommasi N, Martini C, Trincavelli ML, Braca A. Antioxidant Activity of Compounds Isolated from Elaeagnus umbellata Promotes Human Gingival Fibroblast Well-Being. JOURNAL OF NATURAL PRODUCTS 2020; 83:626-637. [PMID: 32031808 PMCID: PMC7997630 DOI: 10.1021/acs.jnatprod.9b01030] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/17/2019] [Indexed: 05/30/2023]
Abstract
Four new triterpenoid bidesmosidic saponins (1-4) and a sesquiterpenoid glucoside (5), together with nine known phenolic compounds (6-14), were isolated from the fruits of Elaeagnus umbellata. Their structures were elucidated using 1D and 2D NMR spectroscopy and mass spectrometry data. The antioxidant capability of the isolated compounds was evaluated in human gingival fibroblasts. Compound 6 decreased ROS production and promoted cell proliferation. It also counteracted the cell cycle blockade induced by a low concentration of H2O2 decreasing the expression of p21 and CDKN2A (p16INK4A). Compound 6 decreased the expression of inflammatory cytokines (IL-6 and IL-8) in response to inflammatory stimuli, supporting its possible use in periodontitis lesions.
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Affiliation(s)
- Anna Maria Iannuzzi
- Dipartimento
di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
| | - Chiara Giacomelli
- Dipartimento
di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
- Centro
Interdipartimentale di Ricerca “Nutraceutica e Alimentazione
per la Salute”, Università
di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Marinella De Leo
- Dipartimento
di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
- Centro
Interdipartimentale di Ricerca “Nutraceutica e Alimentazione
per la Salute”, Università
di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Deborah Pietrobono
- Dipartimento
di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
| | - Fabiano Camangi
- Scuola
Superiore Sant’Anna di Studi Universitari e di Perfezionamento, Piazza Martiri della Libertà
33, 56127 Pisa, Italy
| | - Nunziatina De Tommasi
- Dipartimento
di Farmacia, Università degli Studi
di Salerno, Via Giovanni Paolo II 132, 84084 Fisciano (SA), Italy
| | - Claudia Martini
- Dipartimento
di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
- Centro
Interdipartimentale di Ricerca “Nutraceutica e Alimentazione
per la Salute”, Università
di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Maria Letizia Trincavelli
- Dipartimento
di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
- Centro
Interdipartimentale di Ricerca “Nutraceutica e Alimentazione
per la Salute”, Università
di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
| | - Alessandra Braca
- Dipartimento
di Farmacia, Università di Pisa, Via Bonanno 33, 56126 Pisa, Italy
- Centro
Interdipartimentale di Ricerca “Nutraceutica e Alimentazione
per la Salute”, Università
di Pisa, Via del Borghetto 80, 56124 Pisa, Italy
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24
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Chae Y, Cui R, Lee J, An YJ. Effects on photosynthesis and polyphenolic compounds in crop plant mung bean (Vigna radiata) following simulated accidental exposure to hydrogen peroxide. JOURNAL OF HAZARDOUS MATERIALS 2020; 383:121088. [PMID: 31518806 DOI: 10.1016/j.jhazmat.2019.121088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/03/2019] [Revised: 08/01/2019] [Accepted: 08/22/2019] [Indexed: 06/10/2023]
Abstract
Hydrogen peroxide (H2O2) is a strong oxidizer and bleaching agent included in the list of substances requiring accident preparedness by the National Chemical Information System, Korea. Although chemical accidents related to H2O2 frequently occur globally, few studies have evaluated its toxicity and risk to soil ecosystems. Herein, accidental exposure to H2O2 was simulated in a microcosm including crop plant mung bean (Vigna radiata), and its long-term effects on photosynthetic activities and polyphenolic compounds were measured. Plants were evaluated based on the concentration and amount of H2O2 exposure, distance from H2O2 source, and duration post exposure. Plants exposed to high concentrations and large amounts of H2O2 at a close distance were most damaged; their photosynthetic activities and polyphenolic compound levels significantly decreased compared to the controls. H2O2 consistently damaged plants and affected their activities, but plants with minor damage recovered their photosynthetic activities and polyphenolic compound levels. Additionally, moderate oxidative stress from H2O2 exposure induced the synthesis of polyphenolic antioxidants including flavonol and anthocyanin. Thus, we suggest that flavonol and anthocyanin levels are the most sensitive indicators of adverse effects of H2O2 exposure in V. radiata. Our results highlight the risk of H2O2 and serve as a reference for chemical accidents.
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Affiliation(s)
- Yooeun Chae
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Rongxue Cui
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Jieun Lee
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea
| | - Youn-Joo An
- Department of Environmental Health Science, Konkuk University, 120 Neungdong-ro, Gwangjin-gu, Seoul 05029, Republic of Korea.
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25
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Oliveira S, Costa J, Faria I, Guerreiro SG, Fernandes R. Vitamin A Enhances Macrophages Activity Against B16-F10 Malignant Melanocytes: A New Player for Cancer Immunotherapy? MEDICINA (KAUNAS, LITHUANIA) 2019; 55:E604. [PMID: 31540438 PMCID: PMC6780654 DOI: 10.3390/medicina55090604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Revised: 09/06/2019] [Accepted: 09/09/2019] [Indexed: 12/12/2022]
Abstract
Background and objectives: The incidence of cutaneous melanoma has been increasing. Melanoma is an aggressive form of skin cancer irresponsive to radiation and chemotherapy, rendering this cancer a disease with poor prognosis: In order to surpass some of the limitations addressed to melanoma treatment, alternatives like vitamins have been investigated. In the present study, we address this relationship and investigate the possible role of vitamin A. Materials and Methods: We perform a co-culture assay using a macrophage cell model and RAW 264.7 from mouse, and also a murine melanoma cell line B16-F10. Macrophages were stimulated with both Escherichia coli lipopolysaccharides (LPS) as control, and also with LPS plus vitamin A. Results: Using B16-F10 and RAW 264.7 cell lines, we were able to demonstrate that low concentrations of vitamin A increase cytotoxic activity of macrophages, whereas higher concentrations have the opposite effect. Conclusion: These findings can constitute a new point of view related to immunostimulation by nutrients, which may be considered one major preventive strategy by enhancing the natural defense system of the body.
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Affiliation(s)
- Sofia Oliveira
- School of Health, Porto Polytechnic (ESS, P. Porto), 4200 Porto, Portugal.
| | - José Costa
- School of Health, Porto Polytechnic (ESS, P. Porto), 4200 Porto, Portugal.
| | - Isabel Faria
- School of Health, Porto Polytechnic (ESS, P. Porto), 4200 Porto, Portugal.
| | - Susana G Guerreiro
- Institute for Research and Innovation in Health (i3S), Porto University, 4200 Porto, Portugal.
- Faculty of Medicine, University of Porto (FMUP), 4200 Porto, Portugal.
- Faculty of Nutrition and Food Science, University of Porto (FCNAUP), 4200 Porto, Portugal.
| | - Rúben Fernandes
- School of Health, Porto Polytechnic (ESS, P. Porto), 4200 Porto, Portugal.
- Institute for Research and Innovation in Health (i3S), Porto University, 4200 Porto, Portugal.
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26
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Shakeri H, Gevaert AB, Schrijvers DM, De Meyer GRY, De Keulenaer GW, Guns PJDF, Lemmens K, Segers VF. Neuregulin-1 attenuates stress-induced vascular senescence. Cardiovasc Res 2019. [PMID: 29528383 DOI: 10.1093/cvr/cvy059] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Aims Cardiovascular ageing is a key determinant of life expectancy. Cellular senescence, a state of irreversible cell cycle arrest, is an important contributor to ageing due to the accumulation of damaged cells. Targeting cellular senescence could prevent age-related cardiovascular diseases. In this study, we investigated the effects of neuregulin-1 (NRG-1), an epidermal growth factor with cardioprotective and anti-atherosclerotic effects, on cellular senescence. Methods and results Senescence was induced in cultured rat aortic endothelial cells (ECs) and aortic smooth muscle cells (SMCs) by 2 h exposure to 30 µM hydrogen peroxide (H2O2). Cellular senescence was confirmed after 72 h using senescence-associated-β-galactosidase staining (SA-β-gal), cell surface area, and western blot analyses of SA pathways (acetyl-p53, p21). Recombinant human NRG-1 (rhNRG-1, 20 ng/mL) significantly reduced H2O2-induced senescence, as shown by a lower number of SA-β-gal positive cells, smaller surface area and lower expression of acetyl-p53. In C57BL/6 male mice rendered diabetic with streptozotocin (STZ), rhNRG-1 attenuated cellular senescence in aortic ECs and SMCs. Next, we created mice with SMC-specific knockdown of the NRG-1 receptor ErbB4. Aortic SMCs isolated from SMC-specific ErbB4 deficient mice (ErbB4f/+ SM22α-Cre+) showed earlier cellular senescence in vitro compared with wild-type (ErbB4+/+ SM22α-Cre+) SMCs. Furthermore, when rendered diabetic with STZ, ErbB4f/+ SM22α-Cre+ male mice showed significantly more vascular senescence than their diabetic wild-type littermates and had increased mortality. Conclusions This study is the first to explore the role of NRG-1 in vascular senescence. Our data demonstrate that NRG-1 markedly inhibits stress-induced premature senescence in vascular cells in vitro and in the aorta of diabetic mice in vivo. Consistently, deficiency in the NRG-1 receptor ErbB4 provokes cellular senescence in vitro as well as in vivo.
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Affiliation(s)
- Hadis Shakeri
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Andreas B Gevaert
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.,Department of Cardiology.,Laboratory for Cellular and Molecular Cardiology, Department of Cardiology, Antwerp University Hospital (UZA), Antwerp, Belgium
| | - Dorien M Schrijvers
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Guido R Y De Meyer
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Gilles W De Keulenaer
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Pieter-Jan D F Guns
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Katrien Lemmens
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium
| | - Vincent F Segers
- Laboratory of Physiopharmacology, University of Antwerp, Universiteitsplein 1, 2610 Antwerp, Belgium.,Department of Cardiology
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Extracts from Myrtle Liqueur Processing Waste Modulate Stem Cells Pluripotency under Stressing Conditions. BIOMED RESEARCH INTERNATIONAL 2019; 2019:5641034. [PMID: 31309107 PMCID: PMC6594338 DOI: 10.1155/2019/5641034] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/22/2019] [Accepted: 05/23/2019] [Indexed: 12/15/2022]
Abstract
Nutraceuticals present in food are molecules able to exert biological activity for the prevention and treatment of various diseases, in form of pharmaceutical preparations, such as capsules, cream, or pills. Myrtus communis L. is a spontaneous Mediterranean evergreen shrub, widely known for the liqueur obtained from its berries rich in phytochemicals such as tannins and flavonoids. In the present study, we aimed to evaluate the properties of myrtle byproducts, residual of the industrial liqueur processing, in Adipose-derived stem cells (ADSCs) induced at oxidative stress by in vitro H2O2 treatment. Cells were exposed for 12-24 and 48h at treatment with extracts and then senescence-induced. ROS production was then determined. The real-time PCR was performed to evaluate the expression of inflammatory cytokines and sirtuin-dependent epigenetic changes, as well the modifications in terms of stem cell pluripotency. The β-galactosidase assay was conducted to analyze stem cell senescence after treatment. Our results show that industrial myrtle byproducts retain a high antioxidant and antisenescence activity, protecting cells from oxidative stress damages. The results obtained suggest that residues from myrtle liqueur production could be used as resource in formulation of food supplements or pharmaceutical preparations with antioxidant, antiaging, and anti-inflammatory activity.
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28
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Yeo HJ, Shin MJ, Yeo EJ, Choi YJ, Kim DW, Kim DS, Eum WS, Choi SY. Tat-CIAPIN1 inhibits hippocampal neuronal cell damage through the MAPK and apoptotic signaling pathways. Free Radic Biol Med 2019; 135:68-78. [PMID: 30818058 DOI: 10.1016/j.freeradbiomed.2019.02.028] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/24/2019] [Revised: 02/22/2019] [Accepted: 02/22/2019] [Indexed: 01/26/2023]
Abstract
Cytokine-induced apoptosis inhibitor 1 (CIAPIN1) protein is widely expressed in the brain and it is known that this protein is involved in cell survival including dopaminergic neuronal cells. Oxidative stress is known as one of the major causes of degenerative diseases including ischemia. In this study, we investigated the effect of CIAPIN1 protein on hippocampal neuronal (HT-22) cell damage induced by hydrogen peroxide (H2O2) and in an animal model of ischemia using Tat-CIAPIN1 fusion protein which can transduce into cells. Tat-CIAPIN1 protein transduced into HT-22 cells and significantly inhibited cell death, DNA fragmentation, and reactive oxygen species (ROS) generation. Also, Tat-CIAPIN1 protein enhances cell survival via the regulation of Akt, MAPK, NF-κB and apoptotic signaling pathways in the H2O2 treated cells. In an ischemic animal model, Tat-CIAPIN1 protein transduced into the brain and protected neuronal cell death of hippocampal CA1 region induced by ischemic insult. In conclusion, we demonstrated that Tat-CIAPIN1 protein has protective effects against hippocampal neuronal cell damage induced by ischemic injury, suggesting that Tat-CIAPIN1 protein may provide a potential therapeutic agent for ischemia.
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Affiliation(s)
- Hyeon Ji Yeo
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Min Jea Shin
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Eun Ji Yeo
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Yeon Joo Choi
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea
| | - Dae Won Kim
- Department of Biochemistry and Molecular Biology, Research Institute of Oral Sciences, College of Dentistry, Gangneung-Wonju National University, Gangneung, 25457, South Korea
| | - Duk-Soo Kim
- Department of Anatomy, College of Medicine, Soonchunhyang University, Cheonan-Si, 31538, South Korea
| | - Won Sik Eum
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea.
| | - Soo Young Choi
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chuncheon, 24252, South Korea.
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29
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Sibomana I, Grobe N, DelRaso NJ, Reo NV. Influence of Myo-inositol Plus Ethanolamine on Plasmalogens and Cell Viability during Oxidative Stress. Chem Res Toxicol 2019; 32:265-284. [PMID: 30604967 DOI: 10.1021/acs.chemrestox.8b00280] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Previously, we demonstrated that treatment of rats with myo-inositol plus ethanolamine (ME) elevated brain ethanolamine plasmalogens (PE-Pls) and protected against phosphine-induced oxidative stress. Here we tested the hypothesis that ME treatment elevates PE-Pls in a neuro-2A (N2A) cell culture system and protects against hydrogen peroxide (H2O2)-induced oxidative stress, and we assessed the effects of treatments using myo-inositol with or without (+/-) ethanolamine on ethanolamine phospholipids (PLs) and cell viability following H2O2 exposure. Cells were treated with equimolar amounts (500 μM) of myo-inositol, ethanolamine (Etn), or their combination (ME) for 24 h, followed by an additional 24 h exposure to 650 μM H2O2. NMR analyses evaluated the treatment effects on Etn PLs, while LC-MS/MS analyses assessed the molecular species of Etn PLs preferentially affected by ME and H2O2 treatments, especially PE-Pls and their degradation byproducts-lysophosphatidylethanolamine (LPE) and glycerophosphoethanolamine (GPE). Only ME influenced the cellular levels of PLs. ME yielded a 3-fold increase in PE-Pls and phosphatidylethanolamine (PE) ( p < 0.001) and a preferential 60% increase in PE-Pls containing saturated and monounsaturated fatty acids (SFA+MUFA), while polyunsaturated fatty acid (PUFA) species increased by only 10%. Exposing cells to 650 μM H2O2 caused a significant cell death (56% viability), a 27% decrease in PE-Pls, a 201% increase in PUFA-rich LPE, and a ca. 3-fold increase in GPE. H2O2 had no impact on PE, suggesting that LPE and GPE were primarily the byproducts of PE-Pls (not PE) degradation. Surprisingly, ME pretreatment ameliorated H2O2 effects and significantly increased cell survival to 80% ( p < 0.05). Cellular PE-Pls levels prior to H2O2 treatment were highly correlated ( R2 = 0.95) with cell survival, suggesting a relationship between PE-Pls and cell protection. Data suggest that a preferential increase in PE-Pls containing SFA+MUFA species may protect cells from oxidative stress. Such studies aid in our understanding of the neuroprotective mechanisms that may be associated with plasmalogens and the relevance of these phospholipids to neurodegenerative diseases/disorders.
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Affiliation(s)
- Isaie Sibomana
- Department of Biochemistry and Molecular Biology, Magnetic Resonance Laboratory, Boonshoft School of Medicine, 162 Diggs Laboratory , Wright State University , Dayton , Ohio 45435 , United States.,Molecular Mechanisms Branch, Human-Centered ISR Division, Airman Systems Directorate, 711th Human Performance Wing , Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States
| | - Nadja Grobe
- Molecular Mechanisms Branch, Human-Centered ISR Division, Airman Systems Directorate, 711th Human Performance Wing , Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States
| | - Nicholas J DelRaso
- Molecular Mechanisms Branch, Human-Centered ISR Division, Airman Systems Directorate, 711th Human Performance Wing , Air Force Research Laboratory , Wright-Patterson Air Force Base , Ohio 45433 , United States
| | - Nicholas V Reo
- Department of Biochemistry and Molecular Biology, Magnetic Resonance Laboratory, Boonshoft School of Medicine, 162 Diggs Laboratory , Wright State University , Dayton , Ohio 45435 , United States
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30
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Ferrari SM, Elia G, Ragusa F, Paparo SR, Caruso C, Benvenga S, Fallahi P, Antonelli A. The protective effect of myo-inositol on human thyrocytes. Rev Endocr Metab Disord 2018; 19:355-362. [PMID: 30511181 DOI: 10.1007/s11154-018-9476-x] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Patients affected by autoimmune thyroiditis reached positive effects on indices of thyroid autoimmunity and/or thyroidal function, after following a treatment with selenomethionine (Se) alone, or Se in combination with Myo-inositol (Myo-Ins). Our purpose was to investigate if Myo-Ins alone, or a combination of Se + Myo-Ins, is effective in protecting thyroid cells from the effects given by cytokines, or hydrogen peroxide (H2O2). We assessed the interferon (IFN)-γ-inducible protein 10 (IP-10/CXCL10) secretion by stimulating primary thyrocytes (obtained from Hashimoto's thyroiditis or from control patients) with cytokines in presence/absence of H2O2. Our results confirm: 1) the toxic effect of H2O2 in primary thyrocytes that leads to an increase of the apoptosis, to a decrease of the proliferation, and to a slight reduction of cytokines-induced CXCL10 secretion; 2) the secretion of CXCL10 chemokine induced by IFN-γ + tumor necrosis factor alpha (TNF)-α has been decreased by Myo + Ins, both in presence or absence of H2O2; 3) no effect has been shown by the treatment with Se. Therefore, a protective effect of Myo-Ins on thyroid cells has been suggested by our data, which exact mechanisms are at the basis of this effect need to be furtherly investigated.
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Affiliation(s)
- Silvia Martina Ferrari
- Department of Clinical and Experimental Medicine, University of Pisa, School of Medicine, Via Savi, 10, I-56126, Pisa, Italy
| | - Giusy Elia
- Department of Clinical and Experimental Medicine, University of Pisa, School of Medicine, Via Savi, 10, I-56126, Pisa, Italy
| | - Francesca Ragusa
- Department of Clinical and Experimental Medicine, University of Pisa, School of Medicine, Via Savi, 10, I-56126, Pisa, Italy
| | - Sabrina Rosaria Paparo
- Department of Clinical and Experimental Medicine, University of Pisa, School of Medicine, Via Savi, 10, I-56126, Pisa, Italy
| | - Claudia Caruso
- Department of Clinical and Experimental Medicine, University of Pisa, School of Medicine, Via Savi, 10, I-56126, Pisa, Italy
| | - Salvatore Benvenga
- Department of Clinical and Experimental Medicine, University of Messina, Messina, Italy
- Master Program on Childhood, Adolescent and Women's Endocrine Health, University of Messina, Messina, Italy
- Interdepartmental Program of Molecular and Clinical Endocrinology and Women's Endocrine Health, Azienda Ospedaliera Universitaria Policlinico 'G. Martino', I-98125, Messina, Italy
| | - Poupak Fallahi
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Alessandro Antonelli
- Department of Clinical and Experimental Medicine, University of Pisa, School of Medicine, Via Savi, 10, I-56126, Pisa, Italy.
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31
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Blocking nuclear export of HSPA8 after heat shock stress severely alters cell survival. Sci Rep 2018; 8:16820. [PMID: 30429537 PMCID: PMC6235846 DOI: 10.1038/s41598-018-34887-6] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2018] [Accepted: 10/23/2018] [Indexed: 12/12/2022] Open
Abstract
The nuclear translocation of endogenous heat shock cognate protein HSPA8 is a requisite for cell survival during oxidative and heat shock stress. Upon these events, cytoplasmic HSPA8 is thought to concentrate within the nucleus and nucleolus. When the situation returns to normal, HSPA8 is released from its nuclear/nucleolar anchors and redistributes into the cytoplasm. By using different stress conditions and a 21-mer phosphopeptide tool called P140, which binds HSPA8 and hampers its chaperone properties, we deciphered the cellular and molecular effects arising during this vital cytoplasmic-nuclear-cytoplasmic shuttling process. Using the non-metastatic fibroblastoid cell line MRL/N-1 derived from a MRL/MpTn-gld/gld lupus-prone mouse, we discovered that P140 treatment neutralized the egress of HSPA8 from nucleus to cytoplasm in the cell recovery phase. This lack of relocation of HSPA8 into the cytoplasm of heat-shocked MRL/N-1 cells altered the ability of these cells to survive when a second mild oxidative stress mimicking inflammatory conditions was applied. Crosslinking experiments followed by proteomics studies showed that P140 binds regions close to nuclear import and export signal sequences encompassed within the HSPA8 structure. These data are consistent with HSPA8 having a crucial cell protective role against reactive oxygen species (ROS) production by mitochondria during inflammatory conditions.
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32
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Nguyen TT, Huynh NNC, Seubbuk S, Nilmoje T, Wanasuntronwong A, Surarit R. Oxidative stress induced by Porphyromonas gingivalis lysate and nicotine in human periodontal ligament fibroblasts. Odontology 2018; 107:133-141. [DOI: 10.1007/s10266-018-0374-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Accepted: 06/24/2018] [Indexed: 11/29/2022]
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33
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Bae WJ, Park JS, Kang SK, Kwon IK, Kim EC. Effects of Melatonin and Its Underlying Mechanism on Ethanol-Stimulated Senescence and Osteoclastic Differentiation in Human Periodontal Ligament Cells and Cementoblasts. Int J Mol Sci 2018; 19:ijms19061742. [PMID: 29895782 PMCID: PMC6032161 DOI: 10.3390/ijms19061742] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/14/2018] [Accepted: 05/21/2018] [Indexed: 12/11/2022] Open
Abstract
The present study evaluated the protective effects of melatonin in ethanol (EtOH)-induced senescence and osteoclastic differentiation in human periodontal ligament cells (HPDLCs) and cementoblasts and the underlying mechanism. EtOH increased senescence activity, levels of reactive oxygen species (ROS) and the expression of cell cycle regulators (p53, p21 and p16) and senescence-associated secretory phenotype (SASP) genes (interleukin [IL]-1β, IL-6, IL-8 and tumor necrosis factor-α) in HPDLCs and cementoblasts. Melatonin inhibited EtOH-induced senescence and the production of ROS as well as the increased expression of cell cycle regulators and SASP genes. However, it recovered EtOH-suppressed osteoblastic/cementoblastic differentiation, as evidenced by alkaline phosphatase activity, alizarin staining and mRNA expression levels of Runt-related transcription factor 2 (Runx2) and osteoblastic and cementoblastic markers (glucose transporter 1 and cementum-derived protein-32) in HPDLCs and cementoblasts. Moreover, it inhibited EtOH-induced osteoclastic differentiation in mouse bone marrow⁻derived macrophages (BMMs). Inhibition of protein never in mitosis gene A interacting-1 (PIN1) by juglone or small interfering RNA reversed the effects of melatonin on EtOH-mediated senescence as well as osteoblastic and osteoclastic differentiation. Melatonin blocked EtOH-induced activation of mammalian target of rapamycin (mTOR), AMP-activated protein kinase (AMPK), mitogen-activated protein kinase (MAPK) and Nuclear factor of activated T-cells (NFAT) c-1 pathways, which was reversed by inhibition of PIN1. This is the first study to show the protective effects of melatonin on senescence-like phenotypes and osteoclastic differentiation induced by oxidative stress in HPDLCs and cementoblasts through the PIN1 pathway.
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Affiliation(s)
- Won-Jung Bae
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Kyung Hee University, Seoul 02447, Korea.
| | - Jae Suh Park
- Department of Dentistry, Graduate School, Kyung Hee University, Seoul 02447, Korea.
| | - Soo-Kyung Kang
- Department of Oral Medicine, School of Dentistry, Kyung Hee University, Seoul 02447, Korea.
| | - Il-Keun Kwon
- Department of Dental Materials, School of Dentistry, Kyung Hee University, Seoul 02447, Korea.
| | - Eun-Cheol Kim
- Department of Oral and Maxillofacial Pathology, School of Dentistry, Kyung Hee University, Seoul 02447, Korea.
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Que R, Shen Y, Ren J, Tao Z, Zhu X, Li Y. Estrogen receptor‑β‑dependent effects of saikosaponin‑d on the suppression of oxidative stress‑induced rat hepatic stellate cell activation. Int J Mol Med 2017; 41:1357-1364. [PMID: 29286085 PMCID: PMC5819932 DOI: 10.3892/ijmm.2017.3349] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2016] [Accepted: 12/06/2017] [Indexed: 11/22/2022] Open
Abstract
Saikosaponin-d (SSd) is one of the major triterpenoid saponins derived from Bupleurum falcatum L., which has been reported to possess antifibrotic activity. At present, there is little information regarding the potential target of SSd in hepatic stellate cells (HSCs), which serve an important role in excessive extracellular matrix (ECM) deposition during the pathogenesis of hepatic fibrosis. Our recent study indicated that SSd may be considered a novel type of phytoestrogen with estrogen-like actions. Therefore, the present study aimed to investigate the effects of SSd on the proliferation and activation of HSCs, and the underlying mechanisms associated with estrogen receptors. In the present study, a rat HSC line (HSC-T6) was used and cultured with dimethyl sulfoxide, SSd, or estradiol (E2; positive control), in the presence or absence of three estrogen receptor (ER) antagonists [ICI-182780, methylpiperidinopyrazole (MPP) or (R,R)-tetrahydrochrysene (THC)], for 24 h as pretreatment. Oxidative stress was induced by exposure to hydrogen peroxide for 4 h. Cell proliferation was assessed by MTT growth assay. Malondialdehyde (MDA), CuZn-superoxide dismutase (CuZn-SOD), tissue inhibitor of metalloproteinases-1 (TIMP- 1), matrix metalloproteinase-1 (MMP-1), transforming growth factor-β1 (TGF-β1), hydroxyproline (Hyp) and collagen-1 (COL1) levels in cell culture supernatants were determined by ELISA. Reactive oxygen species (ROS) was detected by flow cytometry. Total and phosphorylated mitogen-activated protein kinases (MAPKs) and α-smooth muscle actin (α-SMA) were examined by western blot analysis. TGF-β1 mRNA expression was determined by RT-quantitative (q)PCR. SSd and E2 were able to significantly suppress oxidative stress-induced proliferation and activation of HSC-T6 cells. Furthermore, SSd and E2 were able to reduce ECM deposition, as demonstrated by the decrease in transforming growth factor-β1, hydroxyproline, collagen-1 and tissue inhibitor of metalloproteinases-1, and by the increase in matrix metalloproteinase-1. These results suggested that the possible molecular mechanism could involve downregulation of the reactive oxygen species/mitogen-activated protein kinases signaling pathway. Finally, the effects of SSd and E2 could be blocked by co-incubation with ICI-182780 or THC, but not MPP, thus indicating that ERβ may be the potential target of SSd in HSC-T6 cells. In conclusion, these findings suggested that SSd may suppress oxidative stress-induced activation of HSCs, which relied on modulation of ERβ.
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Affiliation(s)
- Renye Que
- Department of Gastroenterology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, P.R. China
| | - Yanting Shen
- Department of Gastroenterology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, P.R. China
| | - Jianlin Ren
- Department of Scientific Research, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, P.R. China
| | - Zhihui Tao
- Department of Gastroenterology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, P.R. China
| | - Xiaoyan Zhu
- Department of Physiology, The Second Military Medical University, Shanghai 200433, P.R. China
| | - Yong Li
- Department of Gastroenterology, Shanghai Municipal Hospital of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine, Shanghai 200071, P.R. China
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Younis LT, Abu Hassan MI, Taiyeb Ali TB, Bustami TJ. 3D TECA hydrogel reduces cellular senescence and enhances fibroblasts migration in wound healing. Asian J Pharm Sci 2017; 13:317-325. [PMID: 32104405 PMCID: PMC7032142 DOI: 10.1016/j.ajps.2017.12.003] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 08/08/2017] [Accepted: 12/04/2017] [Indexed: 12/11/2022] Open
Abstract
This study was designed to investigate the effect of 3D TECA hydrogel on the inflammatory-induced senescence marker, and to assess the influence of the gel on the periodontal ligament fibroblasts (PDLFs) migration in wound healing in vitro. PDLFs were cultured with 20 ng/ml TNF-α to induce inflammation in the presence and absence of 50 µM 3D TECA gel for 14 d. The gel effect on the senescence maker secretory associated-β-galactosidase (SA-β-gal) activity was measured by a histochemical staining. Chromatin condensation and DNA synthesis of the cells were assessed by 4′,6-diamidino-2-phenylindole and 5-ethynyl-2′-deoxyuridine fluorescent staining respectively. For evaluating fibroblasts migration, scratch wound healing assay and Pro-Plus Imaging software were used. The activity of senescence marker, SA-β-gal, was positive in the samples with TNF-α-induced inflammation. SA-β-gal percentage is suppressed (>65%, P < 0.05) in the treated cells with TECA gel as compared to the non-treated cells. Chromatin foci were obvious in the non-treated samples. DNA synthesis was markedly recognized by the fluorescent staining in the treated compared to non-treated cultures. Scratch wound test indicated that the cells migration rate was significantly higher (14.9 µm2/h, P < 0.05) in the treated versus (11 µm2/h) for control PDLFs. The new formula of 3D TECA suppresses the inflammatory-mediated cellular senescence and enhanced fibroblasts proliferation and migration. Therefore, 3D TECA may be used as an adjunct to accelerate repair and healing of periodontal tissues.
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Affiliation(s)
- Luay Thanoon Younis
- Faculty of Dentistry, Universiti Teknologi MARA, Sungai Buloh 47000, Malaysia
| | | | - Tara Bai Taiyeb Ali
- Faculty of Dentistry, Universiti Teknologi MARA, MAHSA University, Jenjarom 42610, Malaysia
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Ding L, Zeng Q, Wu J, Li D, Wang H, Lu W, Jiang Z, Xu G. Caveolin‑1 regulates oxidative stress‑induced senescence in nucleus pulposus cells primarily via the p53/p21 signaling pathway in vitro. Mol Med Rep 2017; 16:9521-9527. [PMID: 29039595 PMCID: PMC5780011 DOI: 10.3892/mmr.2017.7789] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Accepted: 09/12/2017] [Indexed: 01/12/2023] Open
Abstract
Previous studies have indicated that cellular senescence is a critical underlying mechanism of intervertebral disc degeneration. However, the precise mechanism by which cellular senescence accelerates disc degeneration has not been fully elucidated. Caveolin-1 has recently emerged as an important regulator of cellular senescence. Therefore, the aim of the present study was to investigate whether caveolin-1 is involved in nucleus pulposus (NP) cellular senescence during oxidative stress. PCR was used to detect caveolin-1 mRNA expression and protein expression was detected by western blotting. Caveolin-1 expression at the mRNA and protein levels was markedly increased following treatment with tert-butyl hydroperoxide, and an increase in premature senescence was observed, as determined by senescence-associated β-galactosidase staining and the decline of cellular proliferative ability. In addition, caveolin-1 gene expression was successfully knocked down by lentivirus-mediated RNA interference, which exerted a protective effect against the cellular senescence induced by oxidative stress. Notably, p53 and p21 protein expression, though not p16 protein expression, decreased with caveolin-1 silencing. The results suggested that caveolin-1 may be involved in NP cellular senescence during oxidative stress in vitro, mainly via the p53/p21 signaling pathway. Thus, caveolin-1 may represent a novel therapeutic target for the prevention of intervertebral disc degeneration.
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Affiliation(s)
- Lei Ding
- Department of Orthopedic Surgery, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
| | - Qingmin Zeng
- Department of Orthopedic Surgery, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
| | - Jingping Wu
- Department of Orthopedic Surgery, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
| | - Defang Li
- Department of Orthopedic Surgery, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
| | - Houlei Wang
- Department of Orthopedic Surgery, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
| | - Wei Lu
- Department of Orthopedic Surgery, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
| | - Zengxin Jiang
- Department of Orthopedic Surgery, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
| | - Guoxiong Xu
- Central Laboratory, Jinshan Hospital, Fudan University, Shanghai 201508, P.R. China
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Inhibition of androgen receptor promotes CXC-chemokine receptor 7-mediated prostate cancer cell survival. Sci Rep 2017; 7:3058. [PMID: 28596572 PMCID: PMC5465216 DOI: 10.1038/s41598-017-02918-3] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 04/19/2017] [Indexed: 11/13/2022] Open
Abstract
The atypical C-X-C chemokine receptor 7 (CXCR7) has been implicated in supporting aggressive cancer phenotypes in several cancers including prostate cancer. However, the mechanisms driving overexpression of this receptor in cancer are poorly understood. This study investigates the role of androgen receptor (AR) in regulating CXCR7. Androgen deprivation or AR inhibition significantly increased CXCR7 expression in androgen-responsive prostate cancer cell lines, which was accompanied by enhanced epidermal growth factor receptor (EGFR)-mediated mitogenic signaling, promoting tumor cell survival through an androgen-independent signaling program. Using multiple approaches we demonstrate that AR directly binds to the CXCR7 promoter, suppressing transcription. Clustered regularly interspaced short palindromic repeats (CRISPR) directed Cas9 nuclease-mediated gene editing of CXCR7 revealed that prostate cancer cells depend on CXCR7 for proliferation, survival and clonogenic potential. Loss of CXCR7 expression by CRISPR-Cas9 gene editing resulted in a halt of cell proliferation, severely impaired EGFR signaling and the onset of cellular senescence. Characterization of a mutated CXCR7-expressing LNCaP cell clone showed altered intracellular signaling and reduced spheroid formation potential. Our results demonstrate that CXCR7 is a potential target for adjuvant therapy in combination with androgen deprivation therapy (ADT) to prevent androgen-independent tumor cell survival.
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Tartaglia GM, Gagliano N, Zarbin L, Tolomeo G, Sforza C. Antioxidant capacity of human saliva and periodontal screening assessment in healthy adults. Arch Oral Biol 2017; 78:34-38. [PMID: 28189883 DOI: 10.1016/j.archoralbio.2017.02.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Revised: 02/02/2017] [Accepted: 02/03/2017] [Indexed: 10/20/2022]
Abstract
OBJECTIVE Saliva plays a pivotal role as an antioxidant system, and saliva antioxidant levels are reduced in patients with periodontal disease. Recently, a biochemical test able to determine saliva antioxidant levels was proposed as predictive for oral cavity diseases, but it was not clinically tested. In this preliminary study, we evaluated the relationships between Periodontal Screening and Recordings characteristics of patients and saliva antioxidant levels measures. DESIGN Thirty-nine patients (12 men, 27 women; mean age, 46 years, SD 17) attending the dental hygiene unit of a Private Clinic underwent a Periodontal Screening and Recordings examination and a saliva antioxidant levels measurement using a biochemical commercial test. The results of the clinical periodontal examination were compared to those obtained by the saliva test. RESULTS Approximately 70% of patients showed a low saliva antioxidant levels value, while the other patients had Optimal/Normal values. Thirteen patients (33%) resulted positive to Periodontal Screening and Recordings test. Using Periodontal Screening and Recordings values as gold standard, the saliva antioxidant levels test correctly classified 52.6% of patients; sensitivity was 84.6%, specificity was 36%. CONCLUSIONS The saliva antioxidant levels test had a good sensitivity when compared to the gold standard; this finding corroborates the hypothesis that alterations of the oral antioxidant levels are related to periodontal disease. The reduced specificity shows that saliva antioxidant levels test could detect alterations predisposing to periodontal disease before clinically evident aspects.
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Affiliation(s)
- Gianluca Martino Tartaglia
- Functional Anatomy Research Center (FARC), Laboratorio di Anatomia Funzionale dell'Apparato Stomatognatico, Dipartimento di Scienze Biomediche per la Salute, Facoltà di Medicina e Chirurgia, Università degli Studi di Milano, via Luigi Mangiagalli 31, 20133 Milano, Italy; Private practice, SST Dental Clinic, via Martiri della Libertà 58, 20090 Segrate, MI, Italy
| | - Nicoletta Gagliano
- Dipartimento di Scienze Biomediche per la Salute, Facoltà di Medicina e Chirurgia, Università degli Studi di Milano, via Luigi Mangiagalli 31, 20133 Milano, Italy
| | - Luca Zarbin
- Private practice, SST Dental Clinic, via Martiri della Libertà 58, 20090 Segrate, MI, Italy
| | - Giorgia Tolomeo
- Private practice, SST Dental Clinic, via Martiri della Libertà 58, 20090 Segrate, MI, Italy
| | - Chiarella Sforza
- Functional Anatomy Research Center (FARC), Laboratorio di Anatomia Funzionale dell'Apparato Stomatognatico, Dipartimento di Scienze Biomediche per la Salute, Facoltà di Medicina e Chirurgia, Università degli Studi di Milano, via Luigi Mangiagalli 31, 20133 Milano, Italy.
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LPS-Induced Macrophage Activation and Plasma Membrane Fluidity Changes are Inhibited Under Oxidative Stress. J Membr Biol 2016; 249:789-800. [PMID: 27619206 DOI: 10.1007/s00232-016-9927-9] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 08/30/2016] [Indexed: 10/21/2022]
Abstract
Macrophage activation is essential for a correct and efficient response of innate immunity. During oxidative stress membrane receptors and/or membrane lipid dynamics can be altered, leading to dysfunctional cell responses. Our aim is to analyze membrane fluidity modifications and cell function under oxidative stress in LPS-activated macrophages. Membrane fluidity of individual living THP-1 macrophages was evaluated by the technique two-photon microscopy. LPS-activated macrophage function was determined by TNFα secretion. It was shown that LPS activation causes fluidification of macrophage plasma membrane and production of TNFα. However, oxidative stress induces rigidification of macrophage plasma membrane and inhibition of cell activation, which is evidenced by a decrease of TNFα secretion. Thus, under oxidative conditions macrophage proinflammatory response might develop in an inefficient manner.
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40
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Qin L, Tao Y, Wang L, Chen H, Liu Y, Huang YF. Hydrogen-Rich Saline as an Innovative Therapy for Cataract: A Hypothesis. Med Sci Monit 2016; 22:3191-5. [PMID: 27606690 PMCID: PMC5019135 DOI: 10.12659/msm.899807] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
Cataract is the leading cause of irreversible blindness worldwide. Increasing evidence indicates that oxidative stress is an important risk factor contributing to the development of cataract. Moreover, the enhancement of the antioxidant defense system may be beneficial to prevent or delay the cataractogenesis. The term oxidative stress has been defined as a disturbance in the equilibrium status of oxidant/antioxidant systems with progressive accumulation of reactive oxygen species (ROS) in intact cells. Superfluous ROS can damage proteins, lipids, polysaccharides, and nucleic acids within ocular tissues that are closely correlated with cataract formation. Therefore, prevention of oxidative stress damage by antioxidants might be considered as a viable means of medically offsetting the progression of this vision-impairing disease. Molecular hydrogen has recently been verified to have protective and therapeutic value as an antioxidant through its ability to selectively reduce cytotoxic ROS such as hydroxyl radical (OH). Hitherto, hydrogen has been used as a therapeutic element against multiple pathologies in both animal models and human patients. Unlike most well-known antioxidants, which are unable to successfully target organelles, hydrogen has advantageous distribution characteristics enabling it to penetrate biomembranes and diffuse into the cytosol, mitochondria, and nucleus. Consequently, we speculate that hydrogen might be an effective antioxidant to protect against lens damage, and it is important to further explore the biological mechanism underlying its potential therapeutic effects.
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Affiliation(s)
- Limin Qin
- Department of Ophthalmology, General Hospital of Chinese PLA, Ophthalmology and Visual Science Key Lab of PLA, Beijing, China (mainland)
| | - Ye Tao
- Department of Ophthalmology, General Hospital of Chinese PLA, Ophthalmology and Visual Science Key Lab of PLA, Beijing, China (mainland)
| | - Liqiang Wang
- Department of Ophthalmology, General Hospital of Chinese PLA, Ophthalmology and Visual Science Key Lab of PLA, Beijing, China (mainland)
| | - Hong Chen
- Department of Ophthalmology, General Hospital of Chinese PLA, Ophthalmology and Visual Science Key Lab of PLA, Beijing, China (mainland)
| | - Ying Liu
- Department of Ophthalmology, General Hospital of Chinese PLA, Ophthalmology and Visual Science Key Lab of PLA, Beijing, China (mainland)
| | - Yi Fei Huang
- Department of Ophthalmology, General Hospital of Chinese PLA, Ophthalmology and Visual Science Key Lab of PLA, Beijing, China (mainland)
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41
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Hydrogen Sulfide and Cellular Redox Homeostasis. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:6043038. [PMID: 26881033 PMCID: PMC4736422 DOI: 10.1155/2016/6043038] [Citation(s) in RCA: 149] [Impact Index Per Article: 18.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/26/2015] [Revised: 11/23/2015] [Accepted: 12/01/2015] [Indexed: 01/06/2023]
Abstract
Intracellular redox imbalance is mainly caused by overproduction of reactive oxygen species (ROS) or weakness of the natural antioxidant defense system. It is involved in the pathophysiology of a wide array of human diseases. Hydrogen sulfide (H2S) is now recognized as the third “gasotransmitters” and proved to exert a wide range of physiological and cytoprotective functions in the biological systems. Among these functions, the role of H2S in oxidative stress has been one of the main focuses over years. However, the underlying mechanisms for the antioxidant effect of H2S are still poorly comprehended. This review presents an overview of the current understanding of H2S specially focusing on the new understanding and mechanisms of the antioxidant effects of H2S based on recent reports. Both inhibition of ROS generation and stimulation of antioxidants are discussed. H2S-induced S-sulfhydration of key proteins (e.g., p66Shc and Keap1) is also one of the focuses of this review.
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Sultana ST, Atci E, Babauta JT, Mohamed Falghoush A, Snekvik KR, Call DR, Beyenal H. Electrochemical scaffold generates localized, low concentration of hydrogen peroxide that inhibits bacterial pathogens and biofilms. Sci Rep 2015; 5:14908. [PMID: 26464174 PMCID: PMC4604468 DOI: 10.1038/srep14908] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 09/11/2015] [Indexed: 11/29/2022] Open
Abstract
We hypothesized that low concentrations of H2O2 could be generated through the electrochemical conversion of oxygen by applying an electric potential to a conductive scaffold and produce a low, but constant, concentration of H2O2 that would be sufficient to destroy biofilms. To test our hypothesis we used a multidrug-resistant Acinetobacter baumannii strain, because this species is often implicated in difficult-to-treat biofilm infections. We used conductive carbon fabric as the scaffold material ("e-scaffold"). In vitro experiments demonstrated the production of a maximum constant concentration of ~25 μM H2O2 near the e-scaffold surface. An e-scaffold was overlaid onto an existing A. baumannii biofilm, and within 24 h there was a ~4-log reduction in viable bacteria with an ~80% decrease in biofilm surface coverage. A similar procedure was used to overlay an e-scaffold onto an existing A. baumannii biofilm that was grown on a porcine explant. After 24 h, there was a ~3-log reduction in viable bacteria from the infected porcine explants with no observable damage to the underlying mammalian tissue based on a viability assay and histology. This research establishes a novel foundation for an alternative antibiotic-free wound dressing to eliminate biofilms.
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Affiliation(s)
- Sujala T. Sultana
- School of Chemical Engineering & Bioengineering, Washington State University, Pullman 99163, WA
| | - Erhan Atci
- School of Chemical Engineering & Bioengineering, Washington State University, Pullman 99163, WA
| | - Jerome T. Babauta
- School of Chemical Engineering & Bioengineering, Washington State University, Pullman 99163, WA
| | - Azeza Mohamed Falghoush
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman 99163, WA
| | - Kevin R. Snekvik
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman 99163, WA
- Washington Animal Disease Diagnostic Laboratory, Washington State University, Pullman 99163, WA
| | - Douglas R. Call
- Department of Veterinary Microbiology and Pathology, Washington State University, Pullman 99163, WA
- Paul G. Allen School for Global Animal Health, Washington State University, Pullman 99163, WA
| | - Haluk Beyenal
- School of Chemical Engineering & Bioengineering, Washington State University, Pullman 99163, WA
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Muniz FWMG, Nogueira SB, Mendes FLV, Rösing CK, Moreira MMSM, de Andrade GM, Carvalho RDS. The impact of antioxidant agents complimentary to periodontal therapy on oxidative stress and periodontal outcomes: A systematic review. Arch Oral Biol 2015; 60:1203-14. [DOI: 10.1016/j.archoralbio.2015.05.007] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2015] [Revised: 05/18/2015] [Accepted: 05/19/2015] [Indexed: 11/29/2022]
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44
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Osorio C, Cavalla F, Paula-Lima A, Díaz-Araya G, Vernal R, Ahumada P, Gamonal J, Hernández M. H2 O2 activates matrix metalloproteinases through the nuclear factor kappa B pathway and Ca(2+) signals in human periodontal fibroblasts. J Periodontal Res 2015; 50:798-806. [PMID: 25824649 DOI: 10.1111/jre.12267] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/15/2015] [Indexed: 12/22/2022]
Abstract
BACKGROUND The mechanisms involved in reactive oxygen species and matrix metalloproteinase (MMP)-mediated periodontal tissue breakdown are unknown. OBJECTIVE To determine the effect of H2 O2 in MMP-2 and MMP-9 activity, and the involvement of nuclear factor kappa B (NFκB) and Ca(2+) -mediated signals in human periodontal ligament fibroblasts. MATERIAL AND METHODS Primary cultures were characterized for their phenotype and exposed for 24 h to sublethal doses (2.5-10 μm) of H2 O2 or control media. NFκB involvement was evaluated through immunofluorescence of p65 subunit, using the NFκB blocking peptide SN50 and catalase. Ca(2+) signals were analyzed by loading the cells with Fluo4-AM and recording the fluorescence changes in a confocal microscope before and after the addition of H2 O2 . 1,2-bis(o-aminophenoxy) ethane-N,N,N',N'-tetraacetic acid-acetoxymethyl was used to chelate intracellular Ca(2+) . The activity and levels of MMP-2 and MMP-9 were analyzed by gelatin zymogram and densitometric scanning, and enzyme-linked immunosorbent assay, respectively. Statistical analysis was performed with stata V11.1 software using the ANOVA test. RESULTS H2 O2 at concentrations of 2.5-5 μm induced Ca(2+) signaling and NFκB subunit p65 nuclear translocation, whereas catalase, SN50 and BAPTA-AM prevented p65 nuclear translocation. H2 O2 at 2.5-5 μm significantly increased MMP-9 and MMP-2 activity, while SN50 resulted in lower MMP-2 and MMP-9 activity rates compared with controls. CONCLUSION Sublethal H2 O2 induces Ca(2+) -dependent NFκB signaling with an increase in MMP gelatinolytic activity in human periodontal ligament.
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Affiliation(s)
- C Osorio
- Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - F Cavalla
- Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - A Paula-Lima
- Institute for Research in Dental Sciences, Universidad de Chile, Santiago, Chile
| | - G Díaz-Araya
- Department of Chemical Pharmacology and Toxicology, Faculty of Chemistry and Pharmaceutical Sciences, Universidad de Chile, Santiago, Chile
| | - R Vernal
- Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - P Ahumada
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - J Gamonal
- Department of Conservative Dentistry, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile
| | - M Hernández
- Laboratory of Periodontal Biology, Faculty of Dentistry, Universidad de Chile, Santiago, Chile.,Department of Pathology, Faculty of Dentistry Universidad de Chile, Santiago, Chile
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Furukawa M, K-Kaneyama JR, Yamada M, Senda A, Manabe A, Miyazaki A. Cytotoxic Effects of Hydrogen Peroxide on Human Gingival Fibroblasts In Vitro. Oper Dent 2015; 40:430-9. [PMID: 25575199 DOI: 10.2341/14-059-l] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
In-office bleaching is a popular treatment in modern esthetic dentistry. However, bleaching agents sometimes accidentally adhere to the gingiva and peripheral tissues, even when applied by well-trained dentists. This can lead to transient pain and whitish changes in the gingiva. Although these symptoms disappear within several hours, the effects of bleaching agents on gingiva have not been well described in the literature. The present study aimed to elucidate the cytotoxic effects of a bleaching agent on cultured human gingival fibroblasts (HGFs). We performed a comprehensive analysis of the toxic effects of in-office bleaching agents on gingiva using cultured HGFs and DNA microarray. Survival rates of HGFs decreased with increases in the concentration of hydrogen peroxide, which became significant at concentrations of 1.5 × 10(-3)% or higher at every time point. Concentrations lower than 1.5 × 10(-3)% did not affect survival rates of HGFs. Cytotoxicity of hydrogen peroxide was significantly weakened by the addition of vitamin E. Stimulation by in-office bleaching agents triggered the proinflammatory cytokine tumor necrosis factor (TNF)-α cascade in gingival fibroblasts. As the TNF-α cascade can be inhibited by vitamin E additives, treatment with vitamin E may protect gingival fibroblasts against the toxic effects of an in-office bleaching agent. The present results suggest that local administration of vitamin E to gingiva before in-office bleaching may be useful for preventing gingival irritation due to accidental adhesion of a bleaching agent.
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46
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DESI-MS as a tool for direct lipid analysis in cultured cells. Cytotechnology 2014; 67:1085-91. [PMID: 24801580 PMCID: PMC4628929 DOI: 10.1007/s10616-014-9734-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Accepted: 04/19/2014] [Indexed: 12/20/2022] Open
Abstract
Desorption electrospray ionization may be used as a fast and convenient method for analysis and identification of lipids in the cell culture. Oxidative stress, which usually involves changes in lipids, was used as a model of pathology to show the utility of this analysis methodology. This paper addresses the surface preparation of cell culture slides, induction of oxidative stress, and cell monolayer culture preparation as well as optimization of the analysis. Advantages and drawbacks of the method were also discussed.
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47
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Kim YN, Jung HY, Eum WS, Kim DW, Shin MJ, Ahn EH, Kim SJ, Lee CH, Yong JI, Ryu EJ, Park J, Choi JH, Hwang IK, Choi SY. Neuroprotective effects of PEP-1-carbonyl reductase 1 against oxidative-stress-induced ischemic neuronal cell damage. Free Radic Biol Med 2014; 69:181-96. [PMID: 24440593 DOI: 10.1016/j.freeradbiomed.2014.01.006] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2013] [Revised: 11/30/2013] [Accepted: 01/06/2014] [Indexed: 12/11/2022]
Abstract
Human carbonyl reductase 1 (CBR1) is a member of the NADPH-dependent short-chain dehydrogenase/reductase superfamily that is known to play an important role in neuronal cell survival via its antioxidant function. Oxidative stress is one of the major causes of degenerative disorders including ischemia. However, the role CBR1 plays with regard to ischemic injury is as yet poorly understood. Protein transduction domains such as PEP-1 are well known and now commonly used to deliver therapeutic proteins into cells. In this study, we prepared PEP-1-CBR1 protein and examined whether it protects against oxidative-stress-induced neuronal cell damage. PEP-1-CBR1 protein was efficiently transduced into hippocampal neuronal HT-22 cells and protected against hydrogen peroxide (H2O2)-induced neuronal cell death. Transduced PEP-1-CBR1 protein drastically inhibited H2O2-induced reactive oxygen species production, the oxidation of intracellular macromolecules, and the activation of mitogen-activated protein kinases, as well as cellular apoptosis. Furthermore, we demonstrated that transduced PEP-1-CBR1 protein markedly protected against neuronal cell death in the CA1 region of the hippocampus resulting from ischemic injury in an animal model. In addition, PEP-1-CBR1 protein drastically reduced activation of glial cells and lipid peroxidation in an animal model. These results indicate that PEP-1-CBR1 protein significantly protects against oxidative-stress-induced neuronal cell death in vitro and in vivo. Therefore, we suggest that PEP-1-CBR1 protein may be a therapeutic agent for the treatment of ischemic injuries as well as oxidative-stress-induced cell damage and death.
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Affiliation(s)
- Young Nam Kim
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea
| | - Hyo Young Jung
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University, Seoul 151-742, South Korea
| | - Won Sik Eum
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea
| | - Dae Won Kim
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea
| | - Min Jea Shin
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea
| | - Eun Hee Ahn
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea
| | - Sang Jin Kim
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea
| | - Chi Hern Lee
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea
| | - Ji In Yong
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea
| | - Eun Ji Ryu
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea
| | - Jinseu Park
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea
| | - Jung Hoon Choi
- Department of Anatomy, College of Veterinary Medicine, Kangwon National University, Chunchon 200-701, South Korea
| | - In Koo Hwang
- Department of Anatomy and Cell Biology, College of Veterinary Medicine, and Research Institute for Veterinary Science, Seoul National University, Seoul 151-742, South Korea.
| | - Soo Young Choi
- Department of Biomedical Science and Research Institute of Bioscience and Biotechnology, Hallym University, Chunchon 200-702, South Korea.
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Wright AT, Magnaldo T, Sontag RL, Anderson LN, Sadler NC, Piehowski PD, Gache Y, Weber TJ. Deficient expression of aldehyde dehydrogenase 1A1 is consistent with increased sensitivity of Gorlin syndrome patients to radiation carcinogenesis. Mol Carcinog 2013; 54:473-84. [PMID: 24285572 DOI: 10.1002/mc.22115] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 10/28/2013] [Accepted: 11/07/2013] [Indexed: 12/30/2022]
Abstract
Human phenotypes that are highly susceptible to radiation carcinogenesis have been identified. Sensitive phenotypes often display robust regulation of molecular features that modify biological response, which can facilitate identification of the pathways/networks that contribute to pathophysiological outcomes. Here we interrogate primary dermal fibroblasts isolated from Gorlin syndrome patients (GDFs), who display a pronounced inducible tumorigenic response to radiation, in comparison to normal human dermal fibroblasts (NHDFs). Our approach exploits newly developed thiol reactive probes to define changes in protein thiol profiles in live cell studies, which minimizes artifacts associated with cell lysis. Redox probes revealed deficient expression of an apparent 55 kDa protein thiol in GDFs from independent Gorlin syndrome patients, compared with NHDFs. Proteomics tentatively identified this protein as aldehyde dehydrogenase 1A1 (ALDH1A1), a key enzyme regulating retinoic acid synthesis, and ALDH1A1 protein deficiency in GDFs was confirmed by Western blot. A number of additional protein thiol differences in GDFs were identified, including radiation responsive annexin family members and lamin A/C. Collectively, candidates identified in our study have plausible implications for radiation health effects and cancer susceptibility.
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Affiliation(s)
- Aaron T Wright
- Omic Biological Applications, Pacific Northwest National Laboratory, Richland, Washington
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Snow-Lisy DC, Sabanegh ES, Samplaski MK, Morris VB, Labhasetwar V. Superoxide dismutase-loaded biodegradable nanoparticles targeted with a follicle-stimulating hormone peptide protect Sertoli cells from oxidative stress. Fertil Steril 2013; 101:560-7. [PMID: 24289999 DOI: 10.1016/j.fertnstert.2013.10.034] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 10/20/2013] [Accepted: 10/23/2013] [Indexed: 01/07/2023]
Abstract
OBJECTIVE To evaluate targeted superoxide dismutase (SOD)-loaded biodegradable nanoparticles' (NPs) ability to protect Sertoli cells from hydrogen peroxide (H2O2)-induced oxidative stress. DESIGN Cell culture controlled experimental study. SETTING Research laboratory. CELLS Mouse testis Sertoli cells (TM4). INTERVENTIONS Sertoli cells were exposed to 0-200 μg/mL plain media, unconjugated NPs, or FSH peptide-conjugated NPs for 2 or 24 hours to assess uptake. Next, Sertoli cells were exposed to 0-50 mmol H₂O₂ with 0-1 mg/mL unconjugated SOD-loaded NPs, FSH-conjugated SOD-loaded NPs, or equivalent units of SOD in solution as a control for 2-6 hours to assess influence on cell survival after oxidative stress. MAIN OUTCOME MEASURE(S) Cell viability, flow cytometry, and microscopy. RESULT(S) FSH peptide targeting improved uptake of NPs by Sertoli cells. FSH-conjugated SOD-NPs significantly protected Sertoli cells at 6 hours of H₂O₂--induced oxidative stress, with 100% survival with FSH-conjugated SOD-NPs compared with unconjugated SOD-NPs (45%) or SOD in solution (36%). CONCLUSION(S) Conjugation of NPs with FSH peptide improves cellular uptake and survival when SOD-loaded NPs are coincubated with Sertoli cells undergoing oxidative stress. This study represents a step toward developing NPs for the targeted treatment of testicular oxidative stress.
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Affiliation(s)
- Devon C Snow-Lisy
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio; Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio.
| | - Edmund S Sabanegh
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio
| | - Mary K Samplaski
- Glickman Urological and Kidney Institute, Cleveland Clinic, Cleveland, Ohio
| | - Viola B Morris
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
| | - Vinod Labhasetwar
- Department of Biomedical Engineering, Lerner Research Institute, Cleveland Clinic, Cleveland, Ohio
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Chandra RV, Srinivas G, Reddy AA, Reddy BH, Reddy C, Nagarajan S, Naveen A. Locally delivered antioxidant gel as an adjunct to nonsurgical therapy improves measures of oxidative stress and periodontal disease. J Periodontal Implant Sci 2013; 43:121-9. [PMID: 23837126 PMCID: PMC3701833 DOI: 10.5051/jpis.2013.43.3.121] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Accepted: 06/04/2013] [Indexed: 12/14/2022] Open
Abstract
Purpose The present study has two aims; firstly, it attempts to verify the presence of oxidative stress by estimating the reactive oxygen species (ROS) levels in periodontal pockets ≥5 mm as compared to controls. The second aim is to evaluate the effect of lycopene as a locally delivered antioxidant gel on periodontal health and on the gingival crevicular fluid (GCF) levels of 8-hydroxydeoxyguanosine (8-OHdG), a marker of oxidative injury. Methods Thirty-one subjects participated in this study. In the pretreatment phase, the ROS levels in pockets ≥5 mm were measured by flow cytometry. Three sites in each subject were randomly assigned into each of the following experimental groups: sham group, only scaling and root planing (SRP) was done; placebo group, local delivery of placebo gel after SRP; and lycopene group, local delivery of lycopene gel after SRP. Clinical parameters included recording site-specific measures of GCF 8-OHdG, plaque, gingivitis, probing depth, and clinical attachment level. Results The gel, when delivered to the sites with oxidative stress, was effective in increasing clinical attachment and in reducing gingival inflammation, probing depth, and 8-OHdG levels as compared to the placebo and sham sites. Conclusions From this trial conducted over a period of 6 months, it was found that locally delivered lycopene seems to be effective in reducing the measures of oxidative stress and periodontal disease.
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