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Vijayakumar S, DiGuiseppi JA, Dabestani PJ, Ryan WG, Quevedo RV, Li Y, Diers J, Tu S, Fleegel J, Nguyen C, Rhoda LM, Imami AS, Hamoud ARA, Lovas S, McCullumsmith RE, Zallocchi M, Zuo J. In silico transcriptome screens identify epidermal growth factor receptor inhibitors as therapeutics for noise-induced hearing loss. SCIENCE ADVANCES 2024; 10:eadk2299. [PMID: 38896614 PMCID: PMC11186505 DOI: 10.1126/sciadv.adk2299] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2023] [Accepted: 05/14/2024] [Indexed: 06/21/2024]
Abstract
Noise-induced hearing loss (NIHL) is a common sensorineural hearing impairment that lacks U.S. Food and Drug Administration-approved drugs. To fill the gap in effective screening models, we used an in silico transcriptome-based drug screening approach, identifying 22 biological pathways and 64 potential small molecule treatments for NIHL. Two of these, afatinib and zorifertinib [epidermal growth factor receptor (EGFR) inhibitors], showed efficacy in zebrafish and mouse models. Further tests with EGFR knockout mice and EGF-morpholino zebrafish confirmed their protective role against NIHL. Molecular studies in mice highlighted EGFR's crucial involvement in NIHL and the protective effect of zorifertinib. When given orally, zorifertinib was found in the perilymph with favorable pharmacokinetics. In addition, zorifertinib combined with AZD5438 (a cyclin-dependent kinase 2 inhibitor) synergistically prevented NIHL in zebrafish. Our results underscore the potential for in silico transcriptome-based drug screening in diseases lacking efficient models and suggest EGFR inhibitors as potential treatments for NIHL, meriting clinical trials.
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Affiliation(s)
- Sarath Vijayakumar
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Joseph A. DiGuiseppi
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Parinaz Jila Dabestani
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - William G. Ryan
- Department of Neurosciences, University of Toledo, Toledo, OH 43614, USA.
| | - Rene Vielman Quevedo
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Yuju Li
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Jack Diers
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Shu Tu
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Jonathan Fleegel
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Cassidy Nguyen
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Lauren M. Rhoda
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Ali Sajid Imami
- Department of Neurosciences, University of Toledo, Toledo, OH 43614, USA.
| | | | - Sándor Lovas
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Robert E. McCullumsmith
- Department of Neurosciences, University of Toledo, Toledo, OH 43614, USA.
- Neurosciences Institute, ProMedica, Toledo, OH 43606, USA
| | - Marisa Zallocchi
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
| | - Jian Zuo
- Department of Biomedical Sciences, School of Medicine, Creighton University, Omaha, NE 68178, USA
- Ting Therapeutics, University of California San Diego, 9310 Athena Circle, San Diego, CA 92037, USA
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Gao D, Huang J, Lin G, Lu J. A time-course transcriptome analysis of gonads from yellow catfish (Pelteobagrus fulvidraco) reveals genes associated with gonad development. BMC Genomics 2022; 23:409. [PMID: 35637435 PMCID: PMC9153201 DOI: 10.1186/s12864-022-08651-0] [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: 05/23/2022] [Accepted: 05/23/2022] [Indexed: 11/10/2022] Open
Abstract
Background The yellow catfish, Pelteobagrus fulvidraco, is a commercially important fish species. It is widely distributed in the fresh water areas of China, including rivers, lakes, and reservoirs. Like many other aquaculture fish species, people have observed significant size dimorphism between male and female yellow catfish and it shows a growth advantage in males. Results Here, at the first time, the time-course transcriptome was used to explore the various expression profiles of genes in different gonad developmental stages and genders. A total of 2696 different expression genes (DEGs) were identified from different stages. Based on these DEGs, 13 gonad development related genes were identified which showed time-specific or sex biased expression patterns. Conclusion This study will provide the crucial information on the molecular mechanism of gonad development of female and male yellow catfish. Especially, during the different gonad development stages, these 13 gonad development related genes exhibit various expression patterns in female and male individual respectively. These results could inspire and facilitate us to understanding the various roles of these genes play in different gonad development stages and genders. Supplementary Information The online version contains supplementary material available at 10.1186/s12864-022-08651-0.
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Affiliation(s)
- Dong Gao
- School of Marine Sciences, Sun Yat-Sen University, Zhuhai, 519082, China
| | - Junrou Huang
- School of Marine Sciences, Sun Yat-Sen University, Zhuhai, 519082, China
| | - Genmei Lin
- School of Marine Sciences, Sun Yat-Sen University, Zhuhai, 519082, China
| | - Jianguo Lu
- School of Marine Sciences, Sun Yat-Sen University, Zhuhai, 519082, China. .,Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), Zhuhai, 519080, China. .,Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering, Guangzhou, 510275, Guangdong, China. .,Pearl River Estuary Marine Ecosystem Research Station, Ministry of Education, Zhuhai, 519000, China.
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Cui P, Abbasi B, Lin D, Rui R, Ju S. Aurora A inhibition disrupts chromosome condensation and spindle assembly during the first embryonic division in pigs. Reprod Domest Anim 2020; 55:584-593. [PMID: 32053743 DOI: 10.1111/rda.13655] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 02/10/2020] [Indexed: 11/29/2022]
Abstract
As common overexpression of Aurora A in various tumours, much attention has focused on its function in inducing cancer, and its value in cancer therapeutics, considerably less is known regarding its role in the first cleavage division of mammalian embryos. Here, we highlight an indispensable role of Aurora A during the first mitotic division progression of pig embryos just after meiosis. The expression and spatiotemporal localization of Aurora A were initially assessed in pig embryos during the first mitotic division by Western blot analysis and indirect immunofluorescent staining. Then, the potential role of Aurora A was further evaluated using a highly selective Aurora A inhibitor, MLN8054, during this mitotic progression in pig embryos. Aurora A was found to express and exhibit a specific dynamic intracellular localization pattern during the first mitotic division in pig embryos. Aurora A was diffused in the cytoplasm at the prophase stage, and then exhibited a dynamic intracellular localization which was tightly associated with the chromosome and spindle dynamics throughout subsequent mitotic phases. Inhibition of Aurora A by MLN8054 treatment led to the failure of the first cleavage, with the majority of embryos being arrested in prophase of the mitotic division. Further subcellular structure examination showed that Aurora A inhibition not only led to the failure of spindle microtubule assembly, but also resulted in severe defects in chromosome condensation, accompanied by an obvious decrease in p-TACC3(S558) expression during the prophase of the first mitosis. Together, these results illustrated that Aurora A is crucial for both spindle assembly and chromosome condensation during the first mitotic division in pig embryos, and that the regulation of Aurora A may be associated with its effects on p-TACC3(S558) expression.
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Affiliation(s)
- Panpan Cui
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Benazir Abbasi
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Defeng Lin
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Rong Rui
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
| | - Shiqiang Ju
- MOE Joint International Research Laboratory of Animal Health and Food Safety, College of Veterinary Medicine, Nanjing Agricultural University, Nanjing, China
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Size matters! Aurora A controls Drosophila larval development. Dev Biol 2018; 440:88-98. [DOI: 10.1016/j.ydbio.2018.05.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Revised: 05/06/2018] [Accepted: 05/08/2018] [Indexed: 11/21/2022]
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Nguyen T, Li GE, Chen H, Cranfield CG, McGrath KC, Gorrie CA. Maternal E-Cigarette Exposure Results in Cognitive and Epigenetic Alterations in Offspring in a Mouse Model. Chem Res Toxicol 2018; 31:601-611. [PMID: 29863869 DOI: 10.1021/acs.chemrestox.8b00084] [Citation(s) in RCA: 80] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Electronic cigarette (e-cigarette) use is on the rise worldwide and is particularly attractive to young people and as a smoking substitute by pregnant woman. There is a perception in pregnant women and women of child-bearing age that the use of e-cigarettes (vaping) is safer than smoking tobacco cigarettes during pregnancy. However, there is little evidence to support this perception. Here, we examined the offspring from mouse dams that had been exposed during and after pregnancy to ambient air (sham) ( n = 8), e-cigarette aerosols with nicotine ( n = 8), or e-cigarette aerosols without nicotine ( n = 8). Offspring underwent cognitive testing at 12 weeks of age and epigenetic testing of brain tissues at 1 day, 20 days, and 13 weeks after birth. The findings showed deficits in short-term memory, reduced anxiety, and hyperactivity in offspring following maternal e-cigarette exposure using the novel object recognition and elevated plus maze tests. In addition, global DNA methylation was increased in the brains of offspring soon after birth. Using a quantitative-PCR array specific to chromatin modification enzymes on genomic DNA and histones,13 key genes were identified to be significantly altered in the offspring brains from the e-cigarette groups compared to the nonexposed groups. The changes to genes Aurka, Aurkb, Aurkc, Kdm5c, Kdm6b, Dnmt3a, Dnmt3b, and Atf2, all associated with modulating neurological activity, were validated using RT-qPCR. In conclusion, in a mouse model, maternal exposure to e-cigarette aerosols resulted in both cognitive and epigenetic changes in offspring. This suggests that the use of e-cigarettes during pregnancy may have hitherto undetected neurological consequences on newborns.
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Affiliation(s)
- Tara Nguyen
- School of Life Sciences, Faculty of Science , University of Technology Sydney , Sydney , New South Wales , Australia
| | - Gerard E Li
- School of Life Sciences, Faculty of Science , University of Technology Sydney , Sydney , New South Wales , Australia
| | - Hui Chen
- School of Life Sciences, Faculty of Science , University of Technology Sydney , Sydney , New South Wales , Australia
| | - Charles G Cranfield
- School of Life Sciences, Faculty of Science , University of Technology Sydney , Sydney , New South Wales , Australia
| | - Kristine C McGrath
- School of Life Sciences, Faculty of Science , University of Technology Sydney , Sydney , New South Wales , Australia
| | - Catherine A Gorrie
- School of Life Sciences, Faculty of Science , University of Technology Sydney , Sydney , New South Wales , Australia
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Pfister K, Pipka JL, Chiang C, Liu Y, Clark RA, Keller R, Skoglund P, Guertin MJ, Hall IM, Stukenberg PT. Identification of Drivers of Aneuploidy in Breast Tumors. Cell Rep 2018; 23:2758-2769. [PMID: 29847804 PMCID: PMC5997284 DOI: 10.1016/j.celrep.2018.04.102] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2017] [Revised: 01/04/2018] [Accepted: 04/25/2018] [Indexed: 12/22/2022] Open
Abstract
Although aneuploidy is found in the majority of tumors, the degree of aneuploidy varies widely. It is unclear how cancer cells become aneuploid or how highly aneuploid tumors are different from those of more normal ploidy. We developed a simple computational method that measures the degree of aneuploidy or structural rearrangements of large chromosome regions of 522 human breast tumors from The Cancer Genome Atlas (TCGA). Highly aneuploid tumors overexpress activators of mitotic transcription and the genes encoding proteins that segregate chromosomes. Overexpression of three mitotic transcriptional regulators, E2F1, MYBL2, and FOXM1, is sufficient to increase the rate of lagging anaphase chromosomes in a non-transformed vertebrate tissue, demonstrating that this event can initiate aneuploidy. Highly aneuploid human breast tumors are also enriched in TP53 mutations. TP53 mutations co-associate with the overexpression of mitotic transcriptional activators, suggesting that these events work together to provide fitness to breast tumors.
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Affiliation(s)
- Katherine Pfister
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, USA; Department of Biology, University of Virginia, Charlottesville, VA 22908, USA
| | - Justyna L Pipka
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, USA
| | - Colby Chiang
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, USA; McDonnell Genome Institute, Washington University School of Medicine, St. Louis, MO, USA
| | - Yunxian Liu
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, USA
| | - Royden A Clark
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, USA
| | - Ray Keller
- Department of Biology, University of Virginia, Charlottesville, VA 22908, USA
| | - Paul Skoglund
- Department of Biology, University of Virginia, Charlottesville, VA 22908, USA
| | - Michael J Guertin
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, USA
| | - Ira M Hall
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, USA; McDonnell Genome Institute, Washington University School of Medicine, St. Louis, MO, USA; Department of Medicine, Washington University School of Medicine, St. Louis, MO, USA
| | - P Todd Stukenberg
- Department of Biochemistry and Molecular Genetics, University of Virginia, Charlottesville, VA 22908, USA.
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Swarnalatha Y, Jerrine Joseph IS, Jayakrishna T. Rosmarinic acid plays a protective role in the embryogenesis of zebrafish exposed to food colours through its influence on aurora kinase A level. Biomed Pharmacother 2017; 89:1166-1171. [PMID: 28320082 DOI: 10.1016/j.biopha.2017.03.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Revised: 03/01/2017] [Accepted: 03/01/2017] [Indexed: 01/03/2023] Open
Abstract
OBJECTIVE To evaluate the protective nature of the rosmarinic acid from Sphaeranthus amaranthoides during zebra fish embryogenesis. METHODS Rosmarinic acid was isolated from the S. amaranthoides. An accurate, sensitive and simple LC-MS analysis was performed to determine the rosmarinic acid from S. amaranthoides. In the present study, zebrafish embryos were exposed to crimson red and sunset yellow at a concentration of 0.1 and 0.5mg/l and the effect of these food colours on the levels of aurora kinase A was studied individually. RESULTS Aurora kinase A levels are crucial for embryogenesis in zebrafish which is used as model in this study. The decrease of aurora kinase A levels in food colour treated embryos influences the embryogenesis, resulting in short and bent trunk leading to cell death and growth retardation. Elevated levels of aurora kinase A in rosmarinic acid treated groups can be attributed to the restoration of normal growth in zebra fish embryos with well developed brain and eyes. Further insilico docking studies were carried out and target was identified as rosmarinic acid. From the docking studies the docking poses and binding energy confirms that aurora kinase A is the target for rosmarinic acid. CONCLUSION Rosmarinic acid was found to play a protective role in the embryogenesis of zebra fish exposed to food colours (crimson red and sunset yellow) through its influence on aurora kinase A levels.
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Affiliation(s)
- Y Swarnalatha
- Department of Biotechnology, Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Road, Chennai 600119, India.
| | - I S Jerrine Joseph
- Centre for Drug Discovery and Development, Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Road, Chennai 600119, India.
| | - Tippabathani Jayakrishna
- Department of Biotechnology, Sathyabama University, Jeppiaar Nagar, Rajiv Gandhi Road, Chennai 600119, India.
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Percival SM, Parant JM. Observing Mitotic Division and Dynamics in a Live Zebrafish Embryo. J Vis Exp 2016:10.3791/54218. [PMID: 27501381 PMCID: PMC6082026 DOI: 10.3791/54218] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Mitosis is critical for organismal growth and differentiation. The process is highly dynamic and requires ordered events to accomplish proper chromatin condensation, microtubule-kinetochore attachment, chromosome segregation, and cytokinesis in a small time frame. Errors in the delicate process can result in human disease, including birth defects and cancer. Traditional approaches investigating human mitotic disease states often rely on cell culture systems, which lack the natural physiology and developmental/tissue-specific context advantageous when studying human disease. This protocol overcomes many obstacles by providing a way to visualize, with high resolution, chromosome dynamics in a vertebrate system, the zebrafish. This protocol will detail an approach that can be used to obtain dynamic images of dividing cells, which include: in vitro transcription, zebrafish breeding/collecting, embryo embedding, and time-lapse imaging. Optimization and modifications of this protocol are also explored. Using H2A.F/Z-EGFP (labels chromatin) and mCherry-CAAX (labels cell membrane) mRNA-injected embryos, mitosis in AB wild-type, auroraB(hi1045) (,) and esco2(hi2865) mutant zebrafish is visualized. High resolution live imaging in zebrafish allows one to observe multiple mitoses to statistically quantify mitotic defects and timing of mitotic progression. In addition, observation of qualitative aspects that define improper mitotic processes (i.e., congression defects, missegregation of chromosomes, etc.) and improper chromosomal outcomes (i.e., aneuploidy, polyploidy, micronuclei, etc.) are observed. This assay can be applied to the observation of tissue differentiation/development and is amenable to the use of mutant zebrafish and pharmacological agents. Visualization of how defects in mitosis lead to cancer and developmental disorders will greatly enhance understanding of the pathogenesis of disease.
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Affiliation(s)
- Stefanie M Percival
- Department of Pharmacology and Toxicology, University of Alabama at Birmingham
| | - John M Parant
- Department of Pharmacology and Toxicology, University of Alabama at Birmingham;
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Wu TF, Yao YL, Lai IL, Lai CC, Lin PL, Yang WM. Loading of PAX3 to Mitotic Chromosomes Is Mediated by Arginine Methylation and Associated with Waardenburg Syndrome. J Biol Chem 2015; 290:20556-64. [PMID: 26149688 DOI: 10.1074/jbc.m114.607713] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Indexed: 11/06/2022] Open
Abstract
PAX3 is a transcription factor critical to gene regulation in mammalian development. Mutations in PAX3 are associated with Waardenburg syndrome (WS), but the mechanism of how mutant PAX3 proteins cause WS remains unclear. Here, we found that PAX3 loads on mitotic chromosomes using its homeodomain. PAX3 WS mutants with mutations in homeodomain lose the ability to bind mitotic chromosomes. Moreover, loading of PAX3 on mitotic chromosomes requires arginine methylation, which is regulated by methyltransferase PRMT5 and demethylase JMJD6. Mutant PAX3 proteins that lose mitotic chromosome localization block cell proliferation and normal development of zebrafish. These results reveal the molecular mechanism of PAX3s loading on mitotic chromosomes and the importance of this localization pattern in normal development. Our findings suggest that PAX3 WS mutants interfere with the normal functions of PAX3 in a dominant negative manner, which is important to the understanding of the pathogenesis of Waardenburg syndrome.
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Affiliation(s)
- Tsu-Fang Wu
- From the Department of Life Sciences, Department of Biotechnology, Hung Kuang University, Taichung 43302, Taiwan
| | - Ya-Li Yao
- Department of Biotechnology, Asia University, Taichung 41354, Taiwan, and
| | - I-Lu Lai
- the Institute of Molecular Biology, and
| | | | - Pei-Lun Lin
- Bachelor Program of Biotechnology, National Chung Hsing University, Taichung 40227, Taiwan
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Priami C, De Michele G, Cotelli F, Cellerino A, Giorgio M, Pelicci PG, Migliaccio E. Modelling the p53/p66Shc Aging Pathway in the Shortest Living Vertebrate Nothobranchius Furzeri. Aging Dis 2015; 6:95-108. [PMID: 25821638 DOI: 10.14336/ad.2014.0228] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2014] [Accepted: 02/28/2014] [Indexed: 12/23/2022] Open
Abstract
Oxidative stress induced by reactive oxygen species (ROS) increases during lifespan and is involved in aging processes. The p66Shc adaptor protein is a master regulator of oxidative stress response in mammals. Ablation of p66Shc enhances oxidative stress resistance both in vitro and in vivo. Most importantly, it has been demonstrated that its deletion retards aging in mice. Recently, new insights in the molecular mechanisms involving p66Shc and the p53 tumor suppressor genes were given: a specific p66Shc/p53 transcriptional regulation pathway was uncovered as determinant in oxidative stress response and, likely, in aging. p53, in a p66Shc-dependent manner, negatively downregulates the expression of 200 genes which are involved in the G2/M transition of mitotic cell cycle and are downregulated during physiological aging. p66Shc modulates the response of p53 by activating a p53 isoform (p44/p53, also named Delta40p53). Based on these latest results, several developments are expected in the future, as the generation of animal models to study aging and the evaluation of the use of the p53/p66Shc target genes as biomarkers in aging related diseases. The aim of this review is to investigate the conservation of the p66Shc and p53 role in oxidative stress between fish and mammals. We propose to approach this study trough a new model organism, the annual fish Nothobranchius furzeri, that has been demonstrated to develop typical signs of aging, like in mammals, including senescence, neurodegeneration, metabolic disorders and cancer.
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Affiliation(s)
- Chiara Priami
- 1European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy. ; 3Dipartimento di Bioscienze, University of Milan, Italy
| | - Giulia De Michele
- 1European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy
| | | | | | - Marco Giorgio
- 1European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy
| | - Pier Giuseppe Pelicci
- 1European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy. ; 2Dipartimento di Medicina, Chirurgia e Odontoiatria, University of Milan, Italy
| | - Enrica Migliaccio
- 1European Institute of Oncology, Via Ripamonti 435, 20141 Milan, Italy
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Martin SJ. The FEBS Journalin 2015: onwards and upwards. FEBS J 2014. [DOI: 10.1111/febs.13164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Seamus J. Martin
- The FEBS Journal Editorial Office; Cambridge UK
- Department of Genetics; Trinity College; Dublin 2 Ireland
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Fontenille L, Rouquier S, Lutfalla G, Giorgi D. Microtubule-associated protein 9 (Map9/Asap) is required for the early steps of zebrafish development. Cell Cycle 2014; 13:1101-14. [PMID: 24553125 PMCID: PMC4013161 DOI: 10.4161/cc.27944] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
Microtubules are structural components of the cell cytoskeleton and key factors for mitosis and ciliogenesis in eukaryotes. The regulation of MT dynamics requires non-motor MAPs. We previously showed that, in human cells in culture, MAP9 (also named ASAP) is involved in MT dynamics and is essential for mitotic spindle formation and mitosis progression. Indeed, misexpression of MAP9 leads to severe mitotic defects and cell death. Here, we investigated the in vivo role of map9 during zebrafish development. Map9 is expressed mainly as a maternal gene. Within cells, Map9 is associated with the MT network of the mitotic spindle and with centrosomes. Morpholino-mediated depletion of map9 leads to early development arrest before completion of epiboly. Map9 localizes to the MT array of the YSL. This MT network is destroyed in Map9-depleted embryos, and injection of anti-map9 morpholinos directly in the nascent YSL leads to arrest of epiboly/gastrulation. Finally, map9 knockdown deregulates the expression of genes involved in endodermal differentiation, dorso-ventral and left-right patterning, and other MT-based functions. At low morpholino doses, the surviving embryos show dramatic developmental defects, spindle and mitotic defects, and increased apoptosis. Our findings suggest that map9 is a crucial factor in early zebrafish development by regulating different MT-based processes.
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Affiliation(s)
- Laura Fontenille
- Institute of Human Genetics; UPR 1142; CNRS; Montpellier, France; Université de Montpellier 1; Montpellier, France
| | - Sylvie Rouquier
- Institute of Human Genetics; UPR 1142; CNRS; Montpellier, France
| | - Georges Lutfalla
- Dynamique des Interactions Membranaires Normales et Pathologiques; UMR 5235; CNRS; Universités de Montpellier 1&2; Montpellier, France
| | - Dominique Giorgi
- Institute of Human Genetics; UPR 1142; CNRS; Montpellier, France
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