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Zhao M, Rong R, Zhang C, Yang H, Han X, Fan Z, Zheng Y, Zhang J. FBLN5 was Regulated by PRDM9, and Promoted Senescence and Osteogenic Differentiation of Human Periodontal Ligament Stem Cells. Curr Stem Cell Res Ther 2024; 19:417-425. [PMID: 37608663 PMCID: PMC10788921 DOI: 10.2174/1574888x18666230822100054] [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: 03/09/2023] [Revised: 06/12/2023] [Accepted: 07/17/2023] [Indexed: 08/24/2023]
Abstract
OBJECTIVES Periodontal ligament stem cells (PDLSCs) are ideal seed cells for periodontal tissue regeneration. Our previous studies have indicated that the histone methyltransferase PRDM9 plays an important role in human periodontal ligament stem cells (hPDLSCs). Whether FBLN5, which is a downstream gene of PRDM9, also has a potential impact on hPDLSCs is still unclear. METHODS Senescence was assessed using β-galactosidase and Enzyme-linked immunosorbent assay (ELISA). Osteogenic differentiation potential of hPDLSCs was measured through Alkaline phosphatase (ALP) activity assay and Alizarin red detection, while gene expression levels were evaluated using western blot and RT-qPCR analysis. RESULTS FBLN5 overexpression promoted the osteogenic differentiation and senescence of hPDLSCs. FBLN5 knockdown inhibited the osteogenic differentiation and senescence of hPDLSCs. Knockdown of PRDM9 decreased the expression of FBLN5 in hPDLSCs and inhibited senescence of hPDLSCs. Additionally, both FBLN5 and PRDM9 promoted the expression of phosphorylated p38 MAPK, Erk1/2 and JNK. The p38 MAPK pathway inhibitor SB203580 and the Erk1/2 pathway inhibitor PD98059 have the same effects on inhibiting the osteogenic differentiation and senescence of hPDLSCs. The JNK pathway inhibitor SP600125 reduced the senescence of hPDLSCs. CONCLUSION FBLN5 promoted senescence and osteogenic differentiation of hPDLSCs via activation of the MAPK signaling pathway. FBLN5 was positively targeted by PRDM9, which also activated the MAPK signaling pathway.
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Affiliation(s)
- Mengyao Zhao
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Rong Rong
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Chen Zhang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Haoqing Yang
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Xiao Han
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
| | - Zhipeng Fan
- Laboratory of Molecular Signaling and Stem Cells Therapy, Beijing Key Laboratory of Tooth Regeneration and Function Reconstruction, School of Stomatology, Capital Medical University, Beijing, China
- Beijing Laboratory of Oral Health, Capital Medical University, Beijing, China
| | - Ying Zheng
- Department of Endodontics, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
| | - Jianpeng Zhang
- Department of Endodontics, Beijing Stomatological Hospital, School of Stomatology, Capital Medical University, Beijing, China
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Guimera AM, Clark P, Wordsworth J, Anugula S, Rasmussen LJ, Shanley DP. Systems modelling predicts chronic inflammation and genomic instability prevent effective mitochondrial regulation during biological ageing. Exp Gerontol 2022; 166:111889. [PMID: 35811018 DOI: 10.1016/j.exger.2022.111889] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2022] [Revised: 06/30/2022] [Accepted: 07/04/2022] [Indexed: 11/15/2022]
Abstract
The regulation of mitochondrial turnover under conditions of stress occurs partly through the AMPK-NAD+-PGC1α-SIRT1 signalling pathway. This pathway can be affected by both genomic instability and chronic inflammation since these will result in an increased rate of NAD+ degradation through PARP1 and CD38 respectively. In this work we develop a computational model of this signalling pathway, calibrating and validating it against experimental data. The computational model is used to study mitochondrial turnover under conditions of stress and how it is affected by genomic instability, chronic inflammation and biological ageing in general. We report that the AMPK-NAD+-PGC1α-SIRT1 signalling pathway becomes less responsive with age and that this can prime for the accumulation of dysfunctional mitochondria.
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Affiliation(s)
- Alvaro Martinez Guimera
- Biosciences Institute, Ageing Research Laboratories, Campus for Ageing and Vitality, Newcastle University, United Kingdom
| | - Peter Clark
- Biosciences Institute, Ageing Research Laboratories, Campus for Ageing and Vitality, Newcastle University, United Kingdom
| | - James Wordsworth
- Biosciences Institute, Ageing Research Laboratories, Campus for Ageing and Vitality, Newcastle University, United Kingdom
| | - Sharath Anugula
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Lene Juel Rasmussen
- Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Daryl P Shanley
- Biosciences Institute, Ageing Research Laboratories, Campus for Ageing and Vitality, Newcastle University, United Kingdom.
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MHY2013 Modulates Age-related Inflammation and Insulin Resistance by Suppressing the Akt/FOXO1/IL-1β Axis and MAPK-mediated NF-κB Signaling in Aged Rat Liver. Appl Immunohistochem Mol Morphol 2020; 28:579-592. [PMID: 32902936 DOI: 10.1097/pai.0000000000000782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
Abstract
Chronic inflammation is a major risk factor underlying aging and age-associated diseases. It impairs normal lipid accumulation, adipose tissue function, and mitochondrial function, which eventually lead to insulin resistance. Peroxisome proliferator-activated receptors (PPARs) critically regulate gluconeogenesis, lipid metabolism, and the lipid absorption and breakdown process, and PPAR activity decreases in the liver during aging. In the present study, we investigated the ability of 2-(4-(5,6-methylenedioxybenzo[d]thiazol-2-yl)-2-methylphenoxy)-2-methylpropanoic acid (MHY2013), synthesized PPARα/PPARβ/PPARγ pan agonist, to suppress the inflammatory response and attenuate insulin resistance in aged rat liver. Six- and 20-month-old rats were divided into 4 groups: young and old rats fed ad libitum; and old rats fed ad libitum supplemented with MHY2013 (1 mg and 5 mg/kg/d for 4 wk). We found that MHY2013 supplementation efficiently downregulated the activity of nuclear factor-κB through JNK/ERK/p38 mitogen-activated protein kinase signaling in the liver of aged rats. In addition, MHY2013 treatment increased hepatic insulin signaling, and the downstream signaling activity of FOXO1, which is negatively regulated by Akt. Downregulation of Akt increases expression of FOXO1, which acts as a transcription factor and increases transcription of interleukin-1β, leading to hepatic inflammation. The major finding of this study is that MHY2013 acts as a therapeutic agent against age-related inflammation associated with insulin resistance by activating PPARα, PPARβ, and PPARγ. Thus, the study provides evidence for the anti-inflammatory properties of MHY2013, and the role it plays in the regulation of age-related alterations in signal transduction pathways.
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Cuce G, Cetinkaya S, Isitez N, Kuccukturk S, Sozen ME, Kalkan S, Cigerci IH, Demirel HH. Effects of curcumin on methyl methanesulfonate damage to mouse kidney. Biotech Histochem 2015; 91:122-7. [DOI: 10.3109/10520295.2015.1099737] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Przybysz AJ, Choe KP, Roberts LJ, Strange K. Increased age reduces DAF-16 and SKN-1 signaling and the hormetic response of Caenorhabditis elegans to the xenobiotic juglone. Mech Ageing Dev 2009; 130:357-69. [PMID: 19428455 DOI: 10.1016/j.mad.2009.02.004] [Citation(s) in RCA: 86] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2008] [Revised: 02/02/2009] [Accepted: 02/27/2009] [Indexed: 01/21/2023]
Abstract
Cells adapt to stressors by activating mechanisms that repair damage and protect them from further injury. Stress-induced damage accumulates with age and contributes to age associated diseases. Increased age attenuates the ability to mount a stress response, but little is known about the mechanisms by which this occurs. To begin addressing this problem, we studied hormesis in the nematode Caenorhabditis elegans. When exposed to a low concentration of the xenobiotic juglone, young worms mount a robust hormetic stress response and survive a subsequent exposure to a higher concentration of juglone that is normally lethal to naïve animals. Old worms are unable to mount this adaptive response. Microarray and RNAi analyses demonstrate that an altered transcriptional response to juglone is responsible in part for the reduced adaptation of old worms. Many genes differentially regulated in young versus old animals are known or postulated to be regulated by the FOXO homologue DAF-16 and the Nrf2 homologue SKN-1. Activation of these pathways is greatly reduced in juglone stressed old worms. DAF-16- and SKN-1-like transcription factors play highly conserved roles in regulating stress resistance and longevity genes. Our studies provide a foundation for developing a molecular understanding of how age affects cytoprotective transcriptional pathways.
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Affiliation(s)
- Aaron J Przybysz
- Department of Pharmacology, Vanderbilt University, 1161 21st Avenue South, Nashville, TN 37232, USA.
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Kim DH, Kim CH, Kim MS, Kim JY, Jung KJ, Chung JH, An WG, Lee JW, Yu BP, Chung HY. Suppression of age-related inflammatory NF-κB activation by cinnamaldehyde. Biogerontology 2007; 8:545-54. [PMID: 17486422 DOI: 10.1007/s10522-007-9098-2] [Citation(s) in RCA: 79] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2006] [Accepted: 04/11/2007] [Indexed: 11/29/2022]
Abstract
Redox sensitive, pro-inflammatory nuclear transcription factor NF-kappaB plays a key role in both inflammation and aging processes. In a redox state disrupted by oxidative stress, pro-inflammatory genes are upregulated by the activation of NF-kappaB through diverse kinases. Thus, the search and characterization of new substances that modulate NF-kappaB are of recent research interest. Cinnamaldehyde (CNA) is the major component of cinnamon bark oil, which has been widely used as a flavoring agent in foodstuffs such as beverages and ice cream. In the present study, CNA was examined for its molecular modulation of inflammatory NF-kappaB activation via the redox-related NIK/IKK and MAPK pathways through the reduction of oxidative stress. Results show that age-related NF-kappaB activation upregulated NF-kappaB targeting genes, inflammatory iNOS, and COX-2, all of which were inhibited effectively by CNA. Our study further shows that CNA inhibited the activation of NF-kappaB via three signal transduction pathways, NIK/IKK, ERK, and p38 MAPK. Our results indicate that CNA's antioxidative effect and the restoration of redox balance were responsible for its anti-inflammatory action. Thus, the significance of the current study is the new information revealing the anti-inflammatory properties of CNA and the role it plays in the regulation of age-related alterations in signal transduction pathways.
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Affiliation(s)
- Dae Hyun Kim
- College of Pharmacy, Pusan National University, San 30, Jangjun-dong, Gumjung-gu, Busan 609-735, Korea
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Kwon MJ, Jeong KS, Choi EJ, Lee BH. 2,3,7,8-Tetrachlorodibenzo-p-dioxin (TCDD)-induced activation of mitogen-activated protein kinase signaling pathway in Jurkat T cells. ACTA ACUST UNITED AC 2004; 93:186-90. [PMID: 14629743 DOI: 10.1034/j.1600-0773.2003.930406.x] [Citation(s) in RCA: 32] [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
The present study was performed to examine mitogen-activated protein kinase associated pathways in mediation of 2,3,7,8-tetrachlorodibenzo-p-dioxin (TCDD)-induced cell apoptosis in cultured Jurkat T cells. TCDD significantly decreased cell viability in a concentration-dependent manner (P<0.05 at 10-300 nM). TCDD (10 nM) also time-dependently decreased cell viability (P<0.05 at 12-48 hr). c-Jun NH2-terminal kinase was significantly phosphorylated with TCDD treatment in a time dependent manner. p38 Mitogen-activated protein kinase was not significantly changed with TCDD treatment. Extracellular signal-regulated protein kinase was significantly phosphorylated with TCDD treatment for 8 hr and gradually returned to baseline. TCDD induced up-regulation of ASK1 and C-Jun, which are up- and down-stream of JNK, respectively, and up-regulation of cytosolic cytochrome c and caspase-3. These results demonstrate that MAPK signaling pathways including JNK and ERK 1/2, are activated with the treatment of TCDD in Jurkat T cells, which suggest that MAPK pathways may be involved in TCDD-induced cell death.
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Affiliation(s)
- Myung-Ja Kwon
- Medicinal Science Division, Korea Research Institute of Chemical Technology, Daejon, Korea
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Jin Q, Jhun BS, Lee SH, Lee J, Pi Y, Cho YH, Baik HH, Kang I. Differential regulation of phosphatidylinositol 3-kinase/Akt, mitogen-activated protein kinase, and AMP-activated protein kinase pathways during menadione-induced oxidative stress in the kidney of young and old rats. Biochem Biophys Res Commun 2004; 315:555-61. [PMID: 14975736 DOI: 10.1016/j.bbrc.2004.01.093] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2004] [Indexed: 12/16/2022]
Abstract
We investigated regulation of various signal transduction pathways during oxidative stresses in the kidney of young and aged rats. Menadione-induced regulation of molecules in PI 3-kinase, MAPK, and AMPK pathways was determined in the young (2 months) and old (24 months) groups. PI 3-kinase activity and Akt phosphorylation were significantly reduced in the old compared with the young. PTEN tumor suppressor was also lower in its expression and phosphorylation levels in the old. Response of the molecules in PI 3-kinase pathway to menadione was minimized. In contrast, over 5-fold induction of ERK1/2 phosphorylation by menadione was observed in both groups. On the other hand, basal activities as well as menadione-induced activities of JNK1 and AMPK were higher in the old than in the young. While p27(Kip1), p53, and p21(Waf1) were slightly increased by menadione in both groups, the basal induction level in the old was considerably higher. In conclusion, the results suggest that the age-related down-regulation of PI 3-kinase/Akt pathway and up-regulation of JNK1, AMPK, and p53 pathways may be responsible for the increased susceptibility to oxidative stress.
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Affiliation(s)
- Quanri Jin
- Department of Biochemistry and Molecular Biology, School of Medicine, Kyung Hee University, Seoul 130-701, Republic of Korea
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Hildesheim J, Awwad RT, Fornace AJ. p38 Mitogen-Activated Protein Kinase Inhibitor Protects the Epidermis Against the Acute Damaging Effects of Ultraviolet Irradiation by Blocking Apoptosis and Inflammatory Responses. J Invest Dermatol 2004; 122:497-502. [PMID: 15009736 DOI: 10.1111/j.1523-1747.2004.22229.x] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The primary function of the epidermis is to provide a protective barrier against numerous environmental insults, including ultraviolet radiation (UVR). UVR, particularly in the UVB spectrum, is a potent carcinogen known to damage DNA directly or through the generation of free radicals. Although in the long term, protective measures such as apoptosis and inflammation may prove beneficial in safeguarding the epidermis against the propagation of potentially tumorigenic cells, after high-dose UV irradiation these biologic events may be acutely detrimental to the architectural and functional integrity of the tissue owing to rampant cell death and inflammatory responses, which can culminate in epidermal erosion and consequently loss of barrier functions. The mitogen-activated protein kinase (MAPK) signaling pathway is known to be activated by UVR and herein we identify p38 MAPK as a key modulator of these physiologic events. Mice treated with the p38 MAPK inhibitor SB202190 are protected against several detrimental effects of acute UV irradiation, namely, sunburn cell/apoptosis, inflammation, and a hyperproliferation response. Based on our results, selectively blocking p38 activation with the SB202190 inhibitor could prove beneficial in treating victims from severe sunburn or exposure to other chemical agents known to trigger the p38 pathway.
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Affiliation(s)
- Jeffrey Hildesheim
- Gene Response Section, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda Maryland, USA
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Li M, Mossman BT, Kolpa E, Timblin CR, Shukla A, Taatjes DJ, Fukagawa NK. Age-related differences in MAP kinase activity in VSMC in response to glucose or TNF-alpha. J Cell Physiol 2003; 197:418-25. [PMID: 14566971 DOI: 10.1002/jcp.10384] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Aortic vascular smooth muscle cells (VSMC) were used to study the effect of age on responses to high glucose concentrations or the cytokine, tumor necrosis factor-alpha (TNF-alpha). Activator protein-1 (AP-1) binding to DNA increased more in VSMC from old versus young rats (P < 0.02) and was related to increased expression of its components, c-Fos, Fra-1, and JunD. The relationship to upstream signals, i.e., activities of mitogen-activated protein kinases (MAPK), was studied using antibodies to total and phosphorylated forms of extracellular signal-regulated kinases (ERK), c-Jun N-terminal kinases (JNK) and p38. High glucose and TNF-alpha increased ERK phosphorylation more in old (P < 0.05); whereas only TNF-alpha induced JNK activation in young (P < 0.04). PD98059, a MEK inhibitor, attenuated AP-1 activation, lowered c-Fos and Fra-1 protein levels and reduced cell number and cells positive for proliferating cell nuclear antigen in old. We concluded that age differentially influenced activation of signaling pathways in VSMC exposed to high glucose or TNF-alpha. This may contribute to the increased risk for vascular disease associated with aging and diabetes mellitus (DM).
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Affiliation(s)
- Muyao Li
- Department of Medicine, University of Vermont College of Medicine, Burlington, Vermont 05405, USA
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Abstract
Alterations in apoptotic potential, due to perturbations in cell signaling cascades, could underlie age-related organ-specific cellular degeneration and death. While increased apoptosis could lead to cell loss, as in neuronal degeneration, loss of apoptosis competence might well result in the loss of phenotypic fidelity of somatic cells, which could explain to some extent, the age-related increase in cancer incidence. Results from our laboratory indicate that after subjecting young and old rats to genotoxic stress in the form of methyl methanesulfonate (MMS), an apoptotic response is quickly mounted in the liver of the young animals but virtually absent in the same organ of old animals (Nature Med. 8 (2002) 3). To address the possible molecular signaling defect(s) responsible for the age-related dysfunction of apoptosis in response to MMS, mitogen-activated protein kinases (MAPKs), extracellular signal-regulated kinases (ERKs), c-Jun NH(2)-terminal kinases (JNKs) and p38 MAPKs, were evaluated in the liver of young and old rats after MMS treatment. The results demonstrated distinct age-specific patterns of MMS-induced MAPKs activation, suggesting that the balance between cell survival and apoptosis after genotoxic stress may be impaired during aging. These results are discussed in terms of the relative importance in aging of biological redundancy, a concept put forward by the late Bernard Strehler, and cellular fidelity.
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Affiliation(s)
- Yousin Suh
- Departments of Biochemistry and Molecular Biology, Seoul National University College of Medicine, 28 Yongon-Dong, Jongno-Gu, Seoul, 110-799, South Korea.
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