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Deng Y, Adam V, Nepovimova E, Heger Z, Valko M, Wu Q, Wei W, Kuca K. c-Jun N-terminal kinase signaling in cellular senescence. Arch Toxicol 2023; 97:2089-2109. [PMID: 37335314 DOI: 10.1007/s00204-023-03540-1] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 06/06/2023] [Indexed: 06/21/2023]
Abstract
Cellular senescence leads to decreased tissue regeneration and inflammation and is associated with diabetes, neurodegenerative diseases, and tumorigenesis. However, the mechanisms of cellular senescence are not fully understood. Emerging evidence has indicated that c-Jun N-terminal kinase (JNK) signaling is involved in the regulation of cellular senescence. JNK can downregulate hypoxia inducible factor-1α to accelerate hypoxia-induced neuronal cell senescence. The activation of JNK inhibits mTOR activity and triggers autophagy, which promotes cellular senescence. JNK can upregulate the expression of p53 and Bcl-2 and accelerates cancer cell senescence; however, this signaling also mediates the expression of amphiregulin and PD-LI to achieve cancer cell immune evasion and prevents their senescence. The activation of JNK further triggers forkhead box O expression and its target gene Jafrac1 to extend the lifespan of Drosophila. JNK can also upregulate the expression of DNA repair protein poly ADP-ribose polymerase 1 and heat shock protein to delay cellular senescence. This review discusses recent advances in understanding the function of JNK signaling in cellular senescence and includes a comprehensive analysis of the molecular mechanisms underlying JNK-mediated senescence evasion and oncogene-induced cellular senescence. We also summarize the research progress in anti-aging agents that target JNK signaling. This study will contribute to a better understanding of the molecular targets of cellular senescence and provides insights into anti-aging, which may be used to develop drugs for the treatment of aging-related diseases.
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Affiliation(s)
- Ying Deng
- College of Life Science, Yangtze University, Jingzhou, 434025, China
| | - Vojtech Adam
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, 613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, 602 00, Czech Republic
| | - Eugenie Nepovimova
- Department of Chemistry, Faculty of Science, University of Hradec Králové, 500 03, Hradec Králové, Czech Republic
| | - Zbynek Heger
- Department of Chemistry and Biochemistry, Mendel University in Brno, Brno, 613 00, Czech Republic
- Central European Institute of Technology, Brno University of Technology, Brno, 602 00, Czech Republic
| | - Marian Valko
- Faculty of Chemical and Food Technology, Slovak University of Technology, 812 37, Bratislava, Slovakia
| | - Qinghua Wu
- College of Life Science, Yangtze University, Jingzhou, 434025, China.
- Department of Chemistry, Faculty of Science, University of Hradec Králové, 500 03, Hradec Králové, Czech Republic.
| | - Wei Wei
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory of Traceability for Agricultural Genetically Modified Organisms, Ministry of Agriculture and Rural Affairs, Zhejiang Academy of Agricultural Sciences, Hangzhou, 310021, China.
| | - Kamil Kuca
- Department of Chemistry, Faculty of Science, University of Hradec Králové, 500 03, Hradec Králové, Czech Republic.
- Andalusian Research Institute in Data Science and Computational Intelligence (DaSCI), University of Granada, Granada, Spain.
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2
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Dong L, Wang S, Wang X, Wang Z, Liu D, You H. Investigating the adverse outcome pathways (AOP) of neurotoxicity induced by DBDPE with a combination of in vitro and in silico approaches. JOURNAL OF HAZARDOUS MATERIALS 2023; 449:131021. [PMID: 36821895 DOI: 10.1016/j.jhazmat.2023.131021] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 02/14/2023] [Accepted: 02/15/2023] [Indexed: 06/18/2023]
Abstract
Current studies have shown an association between DBDPE and neurotoxicity. In this study, the adverse outcome pathway (AOP) and mechanistic analysis of DBDPE-induced neurotoxicity were explored by a combination of in vitro and in silico approaches in SK-N-SH cells. DBDPE-induced oxidative stress caused DNA strand breaks, resulting in the activation of poly (ADP-ribose) (PAR) polymerase-1 (PARP-1). Activation of PARP1 could cause toxic damage in various organ systems, especially in the nervous system. DBDPE-induced apoptosis via the caspase-dependent intrinsic mitochondrial pathway and the PARP1-dependent pathway. Activation of PARP1 by DBDPE was deemed the initiating event, thereby affecting the key downstream biochemical events (e.g., ROS production, DNA damage, membrane potential changes, and ATP reduction), which induced apoptosis. Furthermore, excessive activation of PARP1 was accompanied by the translocation of the apoptosis-inducing factor (AIF), which was associated with PARP1-dependent cell death. The inhibition of PARP1 by PJ34 reduced DBDPE-induced apoptosis and maintained cellular ATP levels. PJ34 also prevented the translocation of AIF from the mitochondria to the nucleus. These findings improve the understanding of the mechanism of DBDPE-induced neurotoxic effects and provide a theoretical basis for the ecological risk of DBDPE.
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Affiliation(s)
- Liying Dong
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Shutao Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Xingyu Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Ziwei Wang
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Dongmei Liu
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
| | - Hong You
- State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.
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3
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Ibrahim KG, Adeshina KA, Bello MB, Malami I, Abubakar B, Abubakar MB, Imam MU. Prophylactic Use of Natural Products against Developmentally Programmed Metabolic Syndrome. PLANTA MEDICA 2022; 88:650-663. [PMID: 34000739 DOI: 10.1055/a-1482-2343] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Parental dietary choices and/or nutritional interventions in the offspring are critical to early life development, especially during the periods of active developmental plasticity in the offspring. Exposure to a high-fructose, high-fat diet during the fetal or neonatal period predisposes the affected individuals to the development of one or more features of metabolic syndrome, such as dyslipidemia, insulin resistance, diabetes, and associated cardiovascular diseases, later in their life. Owing to the increasing global prevalence of metabolic syndrome and multiple side effects that accompany conventional medicines, much attention is directed towards medicinal plants and phytochemicals as alternative interventions. Several studies have investigated the potential of natural agents to prevent programmed metabolic syndrome. This present review, therefore, highlights an inextricable relationship between the administration of medicinal plants or phytochemicals during the intrauterine or neonatal period, and the prevention of metabolic dysfunction in adulthood, while exploring the mechanisms by which they exert such an effect. The review also identifies plant products as a novel approach to the prevention and management of metabolic syndrome.
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Affiliation(s)
- Kasimu Ghandi Ibrahim
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Kehinde Ahmad Adeshina
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Muhammad Bashir Bello
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
- Department of Veterinary Microbiology, Faculty of Veterinary Medicine, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Ibrahim Malami
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
- Department of Pharmacognosy and Ethnopharmacy, Faculty of Pharmaceutical Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Bilyaminu Abubakar
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
- Department of Pharmacology and Toxicology, Faculty of Pharmaceutical Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Murtala Bello Abubakar
- Department of Physiology, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
| | - Mustapha Umar Imam
- Centre for Advanced Medical Research and Training, Usmanu Danfodiyo University, Sokoto, Nigeria
- Department of Medical Biochemistry, Faculty of Basic Medical Sciences, College of Health Sciences, Usmanu Danfodiyo University, Sokoto, Nigeria
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Gallyas Jr. F, Sumegi B. Mitochondrial Protection by PARP Inhibition. Int J Mol Sci 2020; 21:ijms21082767. [PMID: 32316192 PMCID: PMC7215481 DOI: 10.3390/ijms21082767] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Revised: 04/11/2020] [Accepted: 04/14/2020] [Indexed: 02/07/2023] Open
Abstract
Inhibitors of the nuclear DNA damage sensor and signalling enzyme poly(ADP-ribose) polymerase (PARP) have recently been introduced in the therapy of cancers deficient in double-strand DNA break repair systems, and ongoing clinical trials aim to extend their use from other forms of cancer non-responsive to conventional treatments. Additionally, PARP inhibitors were suggested to be repurposed for oxidative stress-associated non-oncological diseases resulting in a devastating outcome, or requiring acute treatment. Their well-documented mitochondria- and cytoprotective effects form the basis of PARP inhibitors’ therapeutic use for non-oncological diseases, yet can limit their efficacy in the treatment of cancers. A better understanding of the processes involved in their protective effects may improve the PARP inhibitors’ therapeutic potential in the non-oncological indications. To this end, we endeavoured to summarise the basic features regarding mitochondrial structure and function, review the major PARP activation-induced cellular processes leading to mitochondrial damage, and discuss the role of PARP inhibition-mediated mitochondrial protection in several oxidative stress-associated diseases.
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Affiliation(s)
- Ferenc Gallyas Jr.
- Department of Biochemistry and Medical Chemistry, University of Pecs Medical School, 7624 Pecs, Hungary;
- Szentagothai Research Centre, University of Pecs, 7624 Pecs, Hungary
- HAS-UP Nuclear-Mitochondrial Interactions Research Group, 1245 Budapest, Hungary
- Correspondence: ; Tel.: +36-72-536-278
| | - Balazs Sumegi
- Department of Biochemistry and Medical Chemistry, University of Pecs Medical School, 7624 Pecs, Hungary;
- Szentagothai Research Centre, University of Pecs, 7624 Pecs, Hungary
- HAS-UP Nuclear-Mitochondrial Interactions Research Group, 1245 Budapest, Hungary
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Tapodi A, Bognar Z, Szabo C, Gallyas F, Sumegi B, Hocsak E. PARP inhibition induces Akt-mediated cytoprotective effects through the formation of a mitochondria-targeted phospho-ATM-NEMO-Akt-mTOR signalosome. Biochem Pharmacol 2018; 162:98-108. [PMID: 30296409 DOI: 10.1016/j.bcp.2018.10.005] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2018] [Accepted: 10/04/2018] [Indexed: 12/17/2022]
Abstract
PURPOSE The cytoprotective effect of poly(ADP-ribose) polymerase 1 (PARP1) inhibition is well documented in various cell types subjected to oxidative stress. Previously, we have demonstrated that PARP1 inhibition activates Akt, and showed that this response plays a critical role in the maintenance of mitochondrial integrity and in cell survival. However, it has not yet been defined how nuclear PARP1 signals to cytoplasmic Akt. METHODS WRL 68, HeLa and MCF7 cells were grown in culture. Oxidative stress was induced with hydrogen peroxide. PARP was inhibited with the PARP inhibitor PJ34. ATM, mTOR- and NEMO were silenced using specific siRNAs. Cell viability assays were based on the MTT assay. PARP-ATM pulldown experiments were conducted; each protein was visualized by Western blotting. Immunoprecipitation of ATM, phospho-ATM and NEMO was performed from cytoplasmic and mitochondrial cell fractions and proteins were detected by Western blotting. In some experiments, a continually active Akt construct was introduced. Nuclear to cytoplasmic and mitochondrial translocation of phospho-Akt was visualized by confocal microscopy. RESULTS Here we present evidence for a PARP1 mediated, PARylation-dependent interaction between ATM and NEMO, which is responsible for the cytoplasmic transport of phosphorylated (thus, activated) ATM kinase. In turn, the cytoplasmic p-ATM and NEMO forms complex with mTOR and Akt, yielding the phospho-ATM-NEMO-Akt-mTOR signalosome, which is responsible for the PARP-inhibition induced Akt activation. The phospho-ATM-NEMO-Akt-mTOR signalosome localizes to the mitochondria and is essential for the PARP-inhibition-mediated cytoprotective effects in oxidatively stressed cells. When the formation of the signalosome is prevented, the cytoprotective effects diminish, but cells can be rescued by constantly active Akt1, further confirming the critical role of Akt activation in cytoprotection. CONCLUSIONS Taken together, the data presented in the current paper are consistent with the hypothesis that PARP inhibition suppresses the PARylation of ATM, which, in turn, forms an ATM-NEMO complex, which exits the nucleus, and combines in the cytosol with mTOR and Act, resulting in Act phosphorylation (i.e. activation), which, in turn, produces the cytoprotective action via the induction of Akt-mediated survival pathways. This mechanism can be important in the protective effect of PARP inhibitor in various diseases associated with oxidative stress. Moreover, disruption of the formation or action of the phospho-ATM-NEMO-Akt-mTOR signalosome may offer potential future experimental therapeutic checkpoints.
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Affiliation(s)
- Antal Tapodi
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Szigeti Street 12, 7624 Pécs, Hungary
| | - Zita Bognar
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Szigeti Street 12, 7624 Pécs, Hungary
| | - Csaba Szabo
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Szigeti Street 12, 7624 Pécs, Hungary; Department of Medicine, University of Fribourg, Switzerland
| | - Ferenc Gallyas
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Szigeti Street 12, 7624 Pécs, Hungary; Szentágothai Research Centre, University of Pécs, Pécs, Hungary; Nuclear-Mitochondrial Interactions Research Group, Hungarian Academy of Sciences, Budapest, Hungary
| | - Balázs Sumegi
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Szigeti Street 12, 7624 Pécs, Hungary; Szentágothai Research Centre, University of Pécs, Pécs, Hungary; Nuclear-Mitochondrial Interactions Research Group, Hungarian Academy of Sciences, Budapest, Hungary.
| | - Enikő Hocsak
- Department of Biochemistry and Medical Chemistry, University of Pécs, Medical School, Szigeti Street 12, 7624 Pécs, Hungary
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Damiani RM, Moura DJ, Viau CM, Brito V, Morás AM, Henriques JAP, Saffi J. Influence of PARP-1 inhibition in the cardiotoxicity of the topoisomerase 2 inhibitors doxorubicin and mitoxantrone. Toxicol In Vitro 2018; 52:203-213. [PMID: 29913208 DOI: 10.1016/j.tiv.2018.06.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 05/17/2018] [Accepted: 06/12/2018] [Indexed: 02/07/2023]
Abstract
Doxorubicin (DOX) and Mitoxantrone (MTX) are very effective drugs for a range of tumors despite being highly cardiotoxic. DNA topoisomerase 2 beta (Top2ß) was revealed as key mediator of DOX-induced cardiotoxicity, although ROS generation is also an important mechanism. Oxidative stress is also an important issue in MTX-induced cardiotoxicity that is manifested by mitochondrial dysfunction. Studies have demonstrated the relationship between PARP-1 overactivation and cell viability in DOX-treated cardiomyocytes. In reference of MTX, data regarding PARP-1 overactivation as the mechanism responsible for cardiotoxicity is difficult to find. The aim of this study was to evaluate the influence of PARP-1 inhibitor DPQ on DOX- and MTX-mediated cardiotoxicity. Cells were exposed for 24 h to DOX or MTX in the presence or absence of DPQ. Viability, apoptosis, and genotoxicity assays were carried out. Immunofluorescence of phosphorylated histone H2AX was analyzed in H9c2 cells and cardiomyocytes from neonatal rats. Results demonstrated that DPQ co-treatment increases DOX-induced apoptosis in H9c2 cells. DPQ also prevents DOX and MTX-ROS generation in part by increasing SOD and CAT activities. Furthermore, DPQ co-treatment increased the generation of DNA strand breaks by DOX and MTX whilst also inducing phosphorylation of H2AX, MRE11, and ATM in H9c2 cells. Our results demonstrated that as well as increasing DNA damage and inducing apoptotic cell death, DPQ enhances DOX- and MTX-mediated cytotoxicity in H9c2.
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Affiliation(s)
- Roberto Marques Damiani
- Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Sarmento Leite st., 245, Porto Alegre, RS, Brazil; Graduate Program in Cellular and Molecular Biology, Federal University of Rio Grande do Sul (UFRGS), Bento Gonçalves av., 9500, Porto Alegre, RS, Brazil; Centro Universitário Ritter dos Reis (UniRitter), Orfanotrófio st, 555, Porto Alegre, RS, Brazil.
| | - Dinara Jaqueline Moura
- Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Sarmento Leite st., 245, Porto Alegre, RS, Brazil
| | - Cassiana Macagnan Viau
- Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Sarmento Leite st., 245, Porto Alegre, RS, Brazil
| | - Verônica Brito
- Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Sarmento Leite st., 245, Porto Alegre, RS, Brazil
| | - Ana Moira Morás
- Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Sarmento Leite st., 245, Porto Alegre, RS, Brazil
| | - João Antonio Pêgas Henriques
- Graduate Program in Cellular and Molecular Biology, Federal University of Rio Grande do Sul (UFRGS), Bento Gonçalves av., 9500, Porto Alegre, RS, Brazil; Department of Biophysics and Center of Biotechnology, Federal University of Rio Grande do Sul (UFRGS), Bento Gonçalves av., 9500, Porto Alegre, RS, Brazil
| | - Jenifer Saffi
- Laboratory of Genetic Toxicology, Federal University of Health Sciences of Porto Alegre (UFCSPA), Sarmento Leite st., 245, Porto Alegre, RS, Brazil; Graduate Program in Cellular and Molecular Biology, Federal University of Rio Grande do Sul (UFRGS), Bento Gonçalves av., 9500, Porto Alegre, RS, Brazil
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Tang W, Liu X, Qiu L, Zhao X, Huang M, Yin J, Li J, Guo W, Zhu X, Chen Z. Influence of hypoxia-related genetic polymorphisms on the prognosis of patients with metastatic gastric cancer treated with EOF. Oncol Lett 2017; 15:1334-1342. [PMID: 29399184 DOI: 10.3892/ol.2017.7414] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2016] [Accepted: 09/01/2017] [Indexed: 11/06/2022] Open
Abstract
Tumor hypoxia is common in a number of solid tumor types including gastric cancer, and is associated with treatment resistance and poor prognosis. The present study aimed to investigate the function of hypoxia-associated genetic polymorphisms in predicting treatment response and survival in patients with metastatic gastric cancer (MGC) treated with EOF (oxaliplatin and 5-fluorouracil combined with epirubicin) as first-line chemotherapy. The present retrospective study enrolled 108 Chinese patients with MGC receiving EOF as first-line chemotherapy, and genotyped six single nucleotide polymorphisms (SNPs) in four hypoxia-associated genes [myoglobin (MB) rs7292 and rs7293, ATP Binding Cassette Subfamily G Member 2 rs2231142, MutL homolog 1 (MLH1) rs1800734 and rs9852810, and Poly(ADP-Ribose) Polymerase 1 rs1136410]. The results of the present study indicated that the CT/TT genotype of MB rs7292, as well as the GG genotype of MLH1 rs9852810, were independent favorable predictive factors of progression-free survival [PFS; MB rs7292: hazard ratio (HR)=0.135, 95% confidence interval (CI)=0.057-0.321, P<0.001; MLH1 rs9852810: HR=0.494, 95% CI=0.267-0.913, P=0.024). Using a prognostic index based on the favorable SNPs for PFS (MB rs7292 CT/TT genotype, and MLH1 rs9852810 GG genotype), patients were classified into a low-risk group (involving one or two of the two SNPs) and a high-risk group (involving neither of the two SNPs), with a PFS of 180.0 and 117.0 days, respectively (P=0.002). The results of the present study demonstrated that the CT/TT genotype of MB rs7292 and the GG genotype of MLH1 rs9852810 were independent favorable predictive factors of PFS in patients with MGC treated with EOF. Identification of those SNPs in blood samples may allow for the prediction of the short-term efficacy of first-line EOF treatment in patients with MGC.
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Affiliation(s)
- Wenbo Tang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Xin Liu
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Lixin Qiu
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Xiaoying Zhao
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Mingzhu Huang
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Jiliang Yin
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Jin Li
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Weijian Guo
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Xiaodong Zhu
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
| | - Zhiyu Chen
- Department of Medical Oncology, Fudan University Shanghai Cancer Center, Shanghai 200032, P.R. China.,Department of Oncology, Shanghai Medical College, Fudan University, Shanghai 200032, P.R. China
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Hocsak E, Szabo V, Kalman N, Antus C, Cseh A, Sumegi K, Eros K, Hegedus Z, Gallyas F, Sumegi B, Racz B. PARP inhibition protects mitochondria and reduces ROS production via PARP-1-ATF4-MKP-1-MAPK retrograde pathway. Free Radic Biol Med 2017; 108:770-784. [PMID: 28457938 DOI: 10.1016/j.freeradbiomed.2017.04.018] [Citation(s) in RCA: 73] [Impact Index Per Article: 10.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 04/13/2017] [Accepted: 04/16/2017] [Indexed: 12/01/2022]
Abstract
Oxidative stress induces DNA breaks and PARP-1 activation which initiates mitochondrial reactive oxygen species (ROS) production and cell death through pathways not yet identified. Here, we show the mechanism by which PARP-1 influences these processes via PARylation of activating transcription factor-4 (ATF4) responsible for MAP kinase phosphatase-1 (MKP-1) expression and thereby regulates MAP kinases. PARP inhibitor, or silencing, of PARP induced MKP-1 expression by ATF4-dependent way, and inactivated JNK and p38 MAP kinases. Additionally, it induced ATF4 expression and binding to cAMP-response element (CRE) leading to MKP-1 expression and the inactivation of MAP kinases. In contrast, PARP-1 activation induced the PARylation of ATF4 and reduced its binding to CRE sequence in vitro. CHIP-qPCR analysis showed that PARP inhibitor increased the ATF4 occupancy at the initiation site of MKP-1. In oxidative stress, PARP inhibition reduced ROS-induced cell death, suppressed mitochondrial ROS production and protected mitochondrial membrane potential on an ATF4 and MKP-1 dependent way. Basically identical results were obtained in WRL-68, A-549 and T24/83 human cell lines indicating that the aforementioned mechanism can be universal. Here, we provide the first description of PARP-1-ATF4-MKP-1-JNK/p38 MAPK retrograde pathway, which is responsible for the regulation of mitochondrial integrity, ROS production and cell death in oxidative stress, and may represent a new mechanism of PARP in cancer therapy since cancer stem cells development is JNK-dependent.
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Affiliation(s)
- Eniko Hocsak
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary; Nuclear-Mitochondrial Interactions Research Group, Hungarian Academy of Sciences, Budapest, Hungary.
| | - Viktor Szabo
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary
| | - Nikoletta Kalman
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary
| | - Csenge Antus
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary
| | - Anna Cseh
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary
| | - Katalin Sumegi
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary
| | - Krisztian Eros
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary
| | - Zoltan Hegedus
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary; Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Szeged, Hungary
| | - Ferenc Gallyas
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary; Nuclear-Mitochondrial Interactions Research Group, Hungarian Academy of Sciences, Budapest, Hungary; Szentagothai Research Center, Pecs, Hungary
| | - Balazs Sumegi
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary; Nuclear-Mitochondrial Interactions Research Group, Hungarian Academy of Sciences, Budapest, Hungary; Szentagothai Research Center, Pecs, Hungary
| | - Boglarka Racz
- Departments of Biochemistry and Medical Chemistry, University of Pecs, Medical School, Pecs, Hungary
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9
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Ishak L, Moretton A, Garreau-Balandier I, Lefebvre M, Alziari S, Lachaume P, Morel F, Farge G, Vernet P, Dubessay P. DNA maintenance following bleomycin-induced strand breaks does not require poly(ADP-ribosyl)ation activation in Drosophila S2 cells. DNA Repair (Amst) 2016; 48:8-16. [PMID: 27793508 DOI: 10.1016/j.dnarep.2016.10.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2015] [Revised: 09/05/2016] [Accepted: 10/09/2016] [Indexed: 11/16/2022]
Abstract
BACKGROUND Poly-ADP ribosylation (PARylation) is a post translational modification, catalyzed by Poly(ADP-ribose)polymerase (PARP) family. In Drosophila, PARP-I (human PARP-1 ortholog) is considered to be the only enzymatically active isoform. PARylation is involved in various cellular processes such as DNA repair in case of base excision and strand-breaks. OBSERVATIONS Strand-breaks (SSB and DSB) are detrimental to cell viability and, in Drosophila, that has a unique PARP family organization, little is known on PARP involvement in the control of strand-breaks repair process. In our study, strands-breaks (SSB and DSB) are chemically induced in S2 Drosophila cells using bleomycin. These breaks are efficiently repaired in S2 cells. During the bleomycin treatment, changes in PARylation levels are only detectable in a few cells, and an increase in PARP-I and PARP-II mRNAs is only observed during the recovery period. These results differ strongly from those obtained with Human cells, where PARylation is strongly activating when DNA breaks are generated. Finally, in PARP knock-down cells, DNA stability is altered but no change in strand-breaks repair can be observed. CONCLUSIONS PARP responses in DNA strands-breaks context are functional in Drosophila model as demonstrated by PARP-I and PARP-II mRNA increases. However, no modification of the global PARylation profile is observed during strand-breaks generation, only changes at cellular levels are detectable. Taking together, these results demonstrate that PARylation process in Drosophila is tightly regulated in the context of strands-breaks repair and that PARP is essential during the maintenance of DNA integrity but dispensable in the DNA repair process.
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Affiliation(s)
- Layal Ishak
- Université Clermont Auvergne, Université Blaise Pascal, EA 4645, Réparation du Génome Mitochondrial Normal et Pathologique, BP 10448, F-63000 Clermont-Ferrand, France
| | - Amandine Moretton
- Université Clermont Auvergne, Université Blaise Pascal, EA 4645, Réparation du Génome Mitochondrial Normal et Pathologique, BP 10448, F-63000 Clermont-Ferrand, France
| | - Isabelle Garreau-Balandier
- Université Clermont Auvergne, Université Blaise Pascal, EA 4645, Réparation du Génome Mitochondrial Normal et Pathologique, BP 10448, F-63000 Clermont-Ferrand, France
| | - Mathilde Lefebvre
- Université Clermont Auvergne, Université Blaise Pascal, EA 4645, Réparation du Génome Mitochondrial Normal et Pathologique, BP 10448, F-63000 Clermont-Ferrand, France
| | - Serge Alziari
- Université Clermont Auvergne, Université Blaise Pascal, EA 4645, Réparation du Génome Mitochondrial Normal et Pathologique, BP 10448, F-63000 Clermont-Ferrand, France
| | - Philippe Lachaume
- Université Clermont Auvergne, Université Blaise Pascal, EA 4645, Réparation du Génome Mitochondrial Normal et Pathologique, BP 10448, F-63000 Clermont-Ferrand, France
| | - Frédéric Morel
- Université Clermont Auvergne, Université Blaise Pascal, EA 4645, Réparation du Génome Mitochondrial Normal et Pathologique, BP 10448, F-63000 Clermont-Ferrand, France
| | - Géraldine Farge
- Université Clermont Auvergne, Université Blaise Pascal, EA 4645, Réparation du Génome Mitochondrial Normal et Pathologique, BP 10448, F-63000 Clermont-Ferrand, France
| | - Patrick Vernet
- Université Clermont Auvergne, Université Blaise Pascal, EA 4645, Réparation du Génome Mitochondrial Normal et Pathologique, BP 10448, F-63000 Clermont-Ferrand, France.
| | - Pascal Dubessay
- Université Clermont Auvergne, Université Blaise Pascal, EA 4645, Réparation du Génome Mitochondrial Normal et Pathologique, BP 10448, F-63000 Clermont-Ferrand, France
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Molecular and Cellular Effects of Hydrogen Peroxide on Human Lung Cancer Cells: Potential Therapeutic Implications. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2016; 2016:1908164. [PMID: 27375834 PMCID: PMC4916325 DOI: 10.1155/2016/1908164] [Citation(s) in RCA: 52] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 05/10/2016] [Indexed: 02/05/2023]
Abstract
Lung cancer has a very high mortality-to-incidence ratio, representing one of the main causes of cancer mortality worldwide. Therefore, new treatment strategies are urgently needed. Several diseases including lung cancer have been associated with the action of reactive oxygen species (ROS) from which hydrogen peroxide (H2O2) is one of the most studied. Despite the fact that H2O2 may have opposite effects on cell proliferation depending on the concentration and cell type, it triggers several antiproliferative responses. H2O2 produces both nuclear and mitochondrial DNA lesions, increases the expression of cell adhesion molecules, and increases p53 activity and other transcription factors orchestrating cancer cell death. In addition, H2O2 facilitates the endocytosis of oligonucleotides, affects membrane proteins, induces calcium release, and decreases cancer cell migration and invasion. Furthermore, the MAPK pathway and the expression of genes related to inflammation including interleukins, TNF-α, and NF-κB are also affected by H2O2. Herein, we will summarize the main effects of hydrogen peroxide on human lung cancer leading to suggesting it as a potential therapeutic tool to fight this disease. Because of the multimechanistic nature of this molecule, novel therapeutic approaches for lung cancer based on the use of H2O2 may help to decrease the mortality from this malignancy.
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Xie Y, Liu ZH, Li XY, Zhou YD, Xu X, Hu LF, Zhang YL, Liu CF. Protection effect of [Gly14]-Humanin from apoptosis induced by high glucose in human umbilical vein endothelial cells. Diabetes Res Clin Pract 2014; 106:560-6. [PMID: 25451915 DOI: 10.1016/j.diabres.2014.09.020] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 06/17/2014] [Accepted: 09/14/2014] [Indexed: 10/24/2022]
Abstract
AIMS Humanin (HN) is known for its anti-apoptotic functions in neuronal cells. In this study, we sought to investigate the protective effect of [Gly14]-Humanin (HNG) in high glucose (HG)-induced apoptosis of human umbilical vein endothelial cells (HUVECs). METHODS 3-(4,5-Dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide (MTT) assay was used to examine cell viability, DNA chromatin morphology was assessed using Hoechst 33342 staining, and the generation of intracellular reactive oxygen species (ROS) was assessed using the fluorescent probe dichlorofluorescein diacetate (DCFH-DA). The expression of poly ADP-ribose polymerase (PARP), the pro-apoptotic protein bax and the anti-apoptotic protein bcl-2 were examined using western blot analysis. The mRNA level of bax and bcl-2 were detected by quantitative Real-Time PCR. RESULTS Compared with treatment with HG 72h, pretreatment with HNG for 3h significantly increased cell viability (P<0.001), reduced nuclear fluorescence of HUVECs (P<0.05), the levels of cleaved PARP (P<0.05), ROS formation (P<0.05) and the ratio of bax/bcl-2 (P<0.05) compared with treatment with HG for 72h. Quantitative Real-Time PCR showed that mRNA level of bax reduced (P<0.05) and mRNA level of bcl-2 increased (P<0.05) after pretreatment with HNG. CONCLUSIONS Our results imply that HNG can protect HUVECs from apoptosis induced by HG through the bax/bcl-2 pathway.
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Affiliation(s)
- Ying Xie
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Zhi-Hua Liu
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Xiao-Yun Li
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Yan-de Zhou
- Department of Endocrinology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Xingshun Xu
- Department of Neurology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China; Institute of Neuroscience, Soochow University, Suzhou 215123, China
| | - Li-Fang Hu
- Institute of Neuroscience, Soochow University, Suzhou 215123, China
| | - Yan-Lin Zhang
- Department of Neurology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China
| | - Chun-Feng Liu
- Department of Neurology, The Second Affiliated Hospital of Soochow University, Suzhou 215004, China; Institute of Neuroscience, Soochow University, Suzhou 215123, China.
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