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Wang G, Zhang S, Cui J, Gao W, Rong X, Lu Y, Gao C. Novel highly selective fluorescence sensing strategy for Mercury(Ⅱ) in water based on nitrogen-doped carbon quantum dots. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2023; 286:122010. [PMID: 36308826 DOI: 10.1016/j.saa.2022.122010] [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: 07/26/2022] [Revised: 10/13/2022] [Accepted: 10/15/2022] [Indexed: 06/16/2023]
Abstract
In this work, a fluorescent signal-closing probe of nitrogen-doped carbon quantum dots (NCQDs) was developed for quantitative detection of mercury ions (Hg2+). In this detection system, the NCQDs with high quantum yield (QY, 63.80 %) were synthesized via simple hydrothermal method with Methyl Glycine Diacetic acid Trisodium Salt (MGDA) and m-phenylenediamine (MPD) as carbon and nitrogen sources. The NCQDs have a typical surface structure and exceptional fluorescence stability, and their fluorescence zones are centered on excitation wavelengths of 440 nm and emission wavelengths of 510 nm. Under optimal conditions, the NCQDs have outstanding anti-interference ability to various ions and high selectivity to mercury ions. The fluorescence intensity of the detection system is weakened due to the generation of non-fluorescent groups caused by the static quenching effect. The fluorescence quenching efficiency shows a fascinating linear relationship with Hg2+ ions at 0-100 μM (y = 0.0051x-0.015, R2 = 0.9943), and the detection limit is 0.9 μM. Acute toxicity test shows that NCQDs have low toxicity and little harm to environment. The detection system can be used for the quantification of mercury ions in environmental water samples, and the recovery rate is between 99.64 % and 103.43 %, indicating that it is a simple and economical fluorescence detection method.
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Affiliation(s)
- Guiqiao Wang
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
| | - Shurong Zhang
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China
| | - Jinzhi Cui
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China
| | - Wensu Gao
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China
| | - Xing Rong
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China
| | - Yaxin Lu
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China
| | - Canzhu Gao
- School of Environmental Science and Engineering, Shandong University, Qingdao, Shandong, China.
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Hypoxia-Induced GST1 Exerts Protective Effects on Trophoblasts via Inhibiting Reactive Oxygen Species (ROS) Accumulation. Anal Cell Pathol (Amst) 2023. [DOI: 10.1155/2023/9391252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
Hypoxic conditions are a typical extrinsic factor for the modification of trophoblast biological functions, including cell proliferation, migration, and invasion. Hypoxia-induced reactive oxygen species (ROS) accumulation causes chronic trophoblast injury and contributes to preeclampsia (PE). Glutathione-S-transferase P (GSTP1) is a main regulator of ROS. However, it is still unknown whether GSTP1 is involved in ROS regulation under hypoxic conditions. Here, we investigated the expression level of GSTP1 in first-trimester villi placentas compared with full-term placentas and the effect of hypoxic conditions on GSTP1. GSTP1 expression in first-trimester villi placentas was much higher than that in full-term placentas. After hypoxia exposure, GSTP1 was significantly upregulated in JEG3 cells, a trophoblast-like cell line. Hypoxic-induced GSTP1 scavenged ROS accumulated by hypoxia exposure, potentially by promoting GST activity. The inhibitory effects of hypoxia exposure on cell proliferation, migration, and invasion induced by hypoxia exposure were obviously reversed by overexpression of GSTP1. Hypoxia-induced cell apoptosis was also reversed by GSTP1 overexpression, indicating the protective effects of GSTP1 against ROS-induced cell injury. Moreover, overexpressed GSTP1 markedly promoted the cell proliferation, migration, invasion, and colony formation abilities in JEG3 cells, demonstrating that GSP1 also exerts promoting effects under normoxic conditions. These data show that hypoxia-induced GSTP1 expression facilitates trophoblast cell proliferation, migration, and invasion and exerts protective effects under hypoxic conditions, which may play an important role during the increase in PE.
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Ashmore-Harris C, Fruhwirth GO. Generation of In Vivo Traceable Hepatocyte-Like Cells from Human iPSCs. Methods Mol Biol 2022; 2544:15-49. [PMID: 36125708 DOI: 10.1007/978-1-0716-2557-6_2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
In this chapter, we describe a protocol for differentiation of human-induced pluripotent stem cells (iPSCs) into hepatocyte-like cells (HLCs) and their transduction with a lentivirus for gene transfer. Here, we engineer them to express the human sodium iodide symporter, which can be exploited as a radionuclide reporter gene, thereby enabling these cells to be tracked in vivo by single-photon emission computed tomography (SPECT) or positron emission tomography (PET) imaging. Differentiation of HLCs from iPSCs involves three steps: induction of iPSCs to definitive endoderm, differentiation to a hepatic progenitor cell population, and maturation of immature HLCs. Once proliferation of hepatic progenitors has ceased and an immature HLC population is generated, lentiviral transduction can be performed. The immature hepatic gene expression profile/morphology at the stage of transduction will be compatible with further maturation following transgene expression either in vitro or in vivo, with expression of the transgene retained. We detail how transgenic cells can be imaged in vivo. While we provide a protocol for the NIS reporter gene, the cell engineering aspects of this protocol are transferable for use with other (reporter) genes if desired.
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Affiliation(s)
- Candice Ashmore-Harris
- Imaging Therapies and Cancer Group, Comprehensive Cancer Centre, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, UK
- Centre for Regenerative Medicine, Institute for Regeneration and Repair, University of Edinburgh, Edinburgh, UK
| | - Gilbert O Fruhwirth
- Imaging Therapies and Cancer Group, Comprehensive Cancer Centre, School of Cancer and Pharmaceutical Sciences, King's College London, Guy's Cancer Centre, London, UK.
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Wörsdörfer P, Ergün S. The Impact of Oxygen Availability and Multilineage Communication on Organoid Maturation. Antioxid Redox Signal 2021; 35:217-233. [PMID: 33334234 DOI: 10.1089/ars.2020.8195] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Significance: An optimal supply with oxygen is of high importance during embryogenesis and a prerequisite for proper organ development. Different tissues require varying amounts of oxygen, and even within single organs, different phases of development go alongside with either physiological hypoxia or the need for sufficient oxygen supply. Recent Advances: Human induced pluripotent stem cell-derived organoid models are state of the art cell culture platforms for the investigation of developmental processes, disease modeling, and drug testing. Organoids modeling the development of multiple tissues were developed within the past years. Critical Issues: Until now, optimization of oxygen supply and its role during organoid growth, differentiation, and maturation have only rarely been addressed. Recent publications indicate that hypoxia-induced processes play an important role in three-dimensional tissue cultures, triggering multilineage communication between mesenchymal cells, the endothelium, as well as organotypic cells. Later in culture, a sufficient supply with oxygen is of high importance to allow larger organoid sizes. Moreover, cellular stress is reduced and tissue maturation is improved. Therefore, a functional blood vessel network is required. Future Directions: In this review, we will briefly summarize aspects of the role of oxygen during embryonic development and organogenesis, present an update on novel organoid models with a special focus on organoid vascularization, and discuss the importance of complex organoids involving parenchymal cells, mesenchymal cells, inflammatory cells, and functional blood vessels for the generation of mature and fully functional tissues in vitro. Antioxid. Redox Signal. 35, 217-233.
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Affiliation(s)
- Philipp Wörsdörfer
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University Würzburg, Würzburg, Germany
| | - Süleyman Ergün
- Institute of Anatomy and Cell Biology, Julius-Maximilians-University Würzburg, Würzburg, Germany
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Chung CY, Chen YJ, Kang CH, Lin HY, Huang CC, Hsu PH, Lin HJ. Toxic or Not Toxic, That Is the Carbon Quantum Dot's Question: A Comprehensive Evaluation with Zebrafish Embryo, Eleutheroembryo, and Adult Models. Polymers (Basel) 2021; 13:1598. [PMID: 34063447 PMCID: PMC8155906 DOI: 10.3390/polym13101598] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/23/2021] [Accepted: 05/11/2021] [Indexed: 12/17/2022] Open
Abstract
Carbon quantum dots (CQDs) are emerging novel nanomaterials with a wide range of applications and high biocompatibility. However, there is a lack of in-depth research on whether CQDs can cause acute or long-term adverse reactions in aquatic organisms. In this study, two different types of CQDs prepared by ammonia citrate and spermidine, namely CQDAC and CQDSpd, were used to evaluate their biocompatibilities. In the fish embryo acute toxicity test (FET), the LD50 of CQDAC and CQDSpd was about 500 and 100 ppm. During the stage of eleutheroembryo, the LD50 decreased to 340 and 55 ppm, respectively. However, both CQDs were quickly eliminated from embryo and eleutheroembryo, indicating a lack of bioaccumulation. Long-term accumulation of CQDs was also performed in this study, and adult zebrafish showed no adverse effects in 12 weeks. In addition, there was no difference in the hatchability and deformity rates of offspring produced by adult zebrafish, regardless of whether they were fed CQDs or not. The results showed that both CQDAC and CQDSpd have low toxicity and bioaccumulation to zebrafish. Moreover, the toxicity assay developed in this study provides a comprehensive platform to assess the impacts of CQDs on aquatic organisms in the future.
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Affiliation(s)
- Chih-Yu Chung
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan; (C.-Y.C.); (Y.-J.C.); (C.-H.K.); (H.-Y.L.); (C.-C.H.)
| | - Yu-Ju Chen
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan; (C.-Y.C.); (Y.-J.C.); (C.-H.K.); (H.-Y.L.); (C.-C.H.)
| | - Chia-Hui Kang
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan; (C.-Y.C.); (Y.-J.C.); (C.-H.K.); (H.-Y.L.); (C.-C.H.)
| | - Hung-Yun Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan; (C.-Y.C.); (Y.-J.C.); (C.-H.K.); (H.-Y.L.); (C.-C.H.)
| | - Chih-Ching Huang
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan; (C.-Y.C.); (Y.-J.C.); (C.-H.K.); (H.-Y.L.); (C.-C.H.)
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Pang-Hung Hsu
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan; (C.-Y.C.); (Y.-J.C.); (C.-H.K.); (H.-Y.L.); (C.-C.H.)
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan
- Bachelor Degree Program in Marine Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan
| | - Han-Jia Lin
- Department of Bioscience and Biotechnology, National Taiwan Ocean University, Keelung 20224, Taiwan; (C.-Y.C.); (Y.-J.C.); (C.-H.K.); (H.-Y.L.); (C.-C.H.)
- Center of Excellence for the Oceans, National Taiwan Ocean University, Keelung 20224, Taiwan
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Species and tissue specific analysis based on quantitative proteomics from allotetraploid and the parents. J Proteomics 2020; 232:104073. [PMID: 33309926 DOI: 10.1016/j.jprot.2020.104073] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Revised: 11/23/2020] [Accepted: 12/06/2020] [Indexed: 11/22/2022]
Abstract
Allotetraploids play central roles in the field of polyploid breeding of freshwater fishes. The molecular basis underlying distant hybridization and individual differences between allotetraploids and their parents is largely unknown. In this study, we performed quantitative proteomics profiling in gonad and liver tissues between allotetraploid and its parents Red Crucian Carp (♀) and Common Carp (♂) respectively. Thousands of proteins were identified and quantified. Species and tissue specific analysis revealed that a large number of causal proteins are specifically regulated in gonad or liver tissue in allotetraploid and its parents respectively. Subsequently, integrative bioinformatics analyses including functional enrichment, pathway and network analyses were conducted. The results suggested a series of gonad and liver specifically regulated proteins such as LSM3, LSM7, PABPC1B and ALDH3A1, EHHADHB, ACAT2 play crucial roles in reproduction-related and metabolism-related pathways including "DNA replication", "Spliceosome" and "Metabolic pathways", "Biosynthesis of antibiotics". Meanwhile, species specifically regulated proteins such as FMR1, MAO are involved in "RNA transport", "Glycine, serine and threonine metabolism". Herein, we established the first comprehensive proteomics knowledgebase for particular freshwater fishes. It may shed light on the molecular mechanisms underlying polyploidy breeding and individual differences and serve as an indispensable reference for further studies. SIGNIFICANCE: The molecular basis underlying distant hybridization and individual differences between allotetraploid and their parents Red Crucian Carp and Common Carp is largely unknown. Quantitative proteomics profiling integrated with multiple bioinformatics analysis revealed that a large number of causal proteins are specifically expressed in gonad or liver tissue in allotetraploid and its parents. Herein, we established the first comprehensive proteomics knowledgebase for particular freshwater fishes. It may shed light on the molecular mechanisms underlying polyploidy breeding and individual differences and serve as an indispensable reference for further associated studies.
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Landgraf K, Klöting N, Gericke M, Maixner N, Guiu-Jurado E, Scholz M, Witte AV, Beyer F, Schwartze JT, Lacher M, Villringer A, Kovacs P, Rudich A, Blüher M, Kiess W, Körner A. The Obesity-Susceptibility Gene TMEM18 Promotes Adipogenesis through Activation of PPARG. Cell Rep 2020; 33:108295. [PMID: 33086065 DOI: 10.1016/j.celrep.2020.108295] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2019] [Revised: 08/25/2020] [Accepted: 09/30/2020] [Indexed: 01/14/2023] Open
Abstract
TMEM18 is the strongest candidate for childhood obesity identified from GWASs, yet as for most GWAS-derived obesity-susceptibility genes, the functional mechanism remains elusive. We here investigate the relevance of TMEM18 for adipose tissue development and obesity. We demonstrate that adipocyte TMEM18 expression is downregulated in children with obesity. Functionally, downregulation of TMEM18 impairs adipocyte formation in zebrafish and in human preadipocytes, indicating that TMEM18 is important for adipocyte differentiation in vivo and in vitro. On the molecular level, TMEM18 activates PPARG, particularly upregulating PPARG1 promoter activity, and this activation is repressed by inflammatory stimuli. The relationship between TMEM18 and PPARG1 is also evident in adipocytes of children and is clinically associated with obesity and adipocyte hypertrophy, inflammation, and insulin resistance. Our findings indicate a role of TMEM18 as an upstream regulator of PPARG signaling driving healthy adipogenesis, which is dysregulated with adipose tissue dysfunction and obesity.
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Affiliation(s)
- Kathrin Landgraf
- Center for Pediatric Research Leipzig (CPL), Hospital for Children & Adolescents, University of Leipzig, Leipzig 04103, Germany.
| | - Nora Klöting
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, Leipzig 04103, Germany; Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig, Leipzig 04103, Germany
| | - Martin Gericke
- Institute of Anatomy, University of Leipzig, Leipzig 04103, Germany
| | - Nitzan Maixner
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Esther Guiu-Jurado
- Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig, Leipzig 04103, Germany
| | - Markus Scholz
- Institute for Medical Informatics, Statistics and Epidemiology, University of Leipzig, Leipzig 04103, Germany; LIFE Research Center for Civilization Diseases, University of Leipzig, Leipzig 04103, Germany
| | - A Veronica Witte
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig 04103, Germany
| | - Frauke Beyer
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig 04103, Germany
| | - Julian T Schwartze
- Center for Pediatric Research Leipzig (CPL), Hospital for Children & Adolescents, University of Leipzig, Leipzig 04103, Germany
| | - Martin Lacher
- Department of Pediatric Surgery, University of Leipzig, Leipzig 04103, Germany
| | - Arno Villringer
- Department of Neurology, Max Planck Institute for Human Cognitive and Brain Sciences, Leipzig 04103, Germany
| | - Peter Kovacs
- Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig, Leipzig 04103, Germany
| | - Assaf Rudich
- Department of Clinical Biochemistry and Pharmacology, Ben-Gurion University of the Negev, Beer-Sheva 8410501, Israel
| | - Matthias Blüher
- Helmholtz Institute for Metabolic, Obesity and Vascular Research (HI-MAG) of the Helmholtz Zentrum München at the University of Leipzig and University Hospital Leipzig, Leipzig 04103, Germany; Medical Department III-Endocrinology, Nephrology, Rheumatology, University of Leipzig, Leipzig 04103, Germany
| | - Wieland Kiess
- Center for Pediatric Research Leipzig (CPL), Hospital for Children & Adolescents, University of Leipzig, Leipzig 04103, Germany
| | - Antje Körner
- Center for Pediatric Research Leipzig (CPL), Hospital for Children & Adolescents, University of Leipzig, Leipzig 04103, Germany.
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Leahy T, Rickard JP, Bernecic NC, Druart X, de Graaf SP. Ram seminal plasma and its functional proteomic assessment. Reproduction 2020; 157:R243-R256. [PMID: 30844754 DOI: 10.1530/rep-18-0627] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Accepted: 03/07/2019] [Indexed: 12/30/2022]
Abstract
Ejaculation results in the confluence of epididymal spermatozoa with secretions of the accessory sex glands. This interaction is not a prerequisite for fertilisation success, but seminal factors do play a crucial role in prolonging the survival of spermatozoa both in vitro and in vivo by affording protection from handling induced stress and some selective mechanisms of the female reproductive tract. Reproductive biologists have long sought to identify specific factors in seminal plasma that influence sperm function and fertility in these contexts. Many seminal plasma proteins have been identified as diagnostic predictors of sperm function and have been isolated and applied in vitro to prevent sperm damage associated with the application of artificial reproductive technologies. Proteomic assessment of the spermatozoon, and its surroundings, has provided considerable advances towards these goals and allowed for greater understanding of their physiological function. In this review, the importance of seminal plasma will be examined through a proteomic lens to provide comprehensive analysis of the ram seminal proteome and detail the use of proteomic studies that correlate seminal plasma proteins with ram sperm function and preservation ability.
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Affiliation(s)
- T Leahy
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, New South Wales, Australia
| | - J P Rickard
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, New South Wales, Australia
| | - N C Bernecic
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, New South Wales, Australia
| | - X Druart
- Physiologie de la Reproduction et du Comportement, INRA, CNRS, IFCE, Université de Tours, Nouzilly, France
| | - S P de Graaf
- The University of Sydney, Faculty of Science, School of Life and Environmental Sciences, New South Wales, Australia
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Zhang Z, Wang Z, Dang Y, Wang J, Jayaprakash S, Wang H, He J. Transcriptomic Prediction of Pig Liver-Enriched Gene 1 Functions in a Liver Cell Line. Genes (Basel) 2020; 11:genes11040412. [PMID: 32290278 PMCID: PMC7230230 DOI: 10.3390/genes11040412] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2020] [Revised: 03/27/2020] [Accepted: 04/09/2020] [Indexed: 11/16/2022] Open
Abstract
The newly identified liver-enriched gene 1 (LEG1) encodes a protein with a characteristic domain of unknown function 781 (DUF781/LEG1), constituting a protein family with only one member in mammals. A functional study in zebrafish suggested that LEG1 genes are involved in liver development, while the platypus LEG1 homolog, Monotreme Lactation Protein (MLP), which is enriched in the mammary gland and milk, acts as an antibacterial substance. However, no functional studies on eutherian LEG1s have been published to date. Thus, we here report the first functional prediction study at the cellular level. As previously reported, eutherian LEG1s can be classified into three paralogous groups. Pigs have all three LEG1 genes (pLEG1s), while humans and mice have retained only LEG1a. Hence, pLEG1s might represent an ideal model for studying LEG1 gene functions. RNA-seq was performed by the overexpression of pLEG1s and platypus MLP in HepG2 cells. Enrichment analysis showed that pLEG1a and pLEG1b might exhibit little function in liver cells; however, pLEG1c is probably involved in the endoplasmic reticulum (ER) stress response and protein folding. Additionally, gene set enrichment analysis revealed that platypus MLP shows antibacterial activity, confirming the functional study in platypus. Therefore, our study showed from the transcriptomic perspective that mammalian LEG1s have different functions in liver cells due to the subfunctionalization of paralogous genes.
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Affiliation(s)
- Zhe Zhang
- Department of Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China; (Z.Z.); (Y.D.); (J.W.)
| | - Zizengchen Wang
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China; (Z.W.); (H.W.)
| | - Yanna Dang
- Department of Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China; (Z.Z.); (Y.D.); (J.W.)
| | - Jinyang Wang
- Department of Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China; (Z.Z.); (Y.D.); (J.W.)
| | - Sakthidasan Jayaprakash
- Department of Chemical Engineering, Hindustan Institute of Technology and Science, Chennai 603103, India;
| | - Huanan Wang
- Department of Veterinary Medicine, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China; (Z.W.); (H.W.)
| | - Jin He
- Department of Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou 310058, China; (Z.Z.); (Y.D.); (J.W.)
- Correspondence:
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10
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Dang Y, Wang JY, Liu C, Zhang K, Jinrong P, He J. Evolutionary and Molecular Characterization of liver-enriched gene 1. Sci Rep 2020; 10:4262. [PMID: 32144352 PMCID: PMC7060313 DOI: 10.1038/s41598-020-61208-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 02/24/2020] [Indexed: 11/30/2022] Open
Abstract
Liver-enriched gene 1 (Leg1) is a newly identified gene with little available functional information. To evolutionarily and molecularly characterize Leg1 genes, a phylogenetic study was first conducted, which indicated that Leg1 is a conserved gene that exists from bacteria to mammals. During the evolution of mammals, Leg1s underwent tandem duplications, which gave rise to Leg1a, Leg1b, and Leg1c clades. Analysis of the pig genome showed the presence of all three paralogs of pig Leg1 genes (pLeg1s), whereas only Leg1a could be found in the human (hLeg1a) or mouse (mLeg1a) genomes. Purifying force acts on the evolution of Leg1 genes, likely subjecting them to functional constraint. Molecularly, pLeg1a and its coded protein, pig LEG1a (pLEG1a), displayed high similarities to its human and mouse homologs in terms of gene organization, expression patterns, and structures. Hence, pLeg1a, hLeg1a, and mLeg1a might preserve similar functions. Additionally, expression analysis of the three Leg1as suggested that eutherian Leg1as might have different functions from those of zebrafish and platypus due to subfunctionalization. Therefore, pLeg1a might provide essential information about eutherian Leg1a. Moreover, a preliminary functional study using RNA-seq suggested that pLeg1a is involved in the lipid homeostasis. In conclusion, our study provides some basic information on the aspects of evolution and molecular function, which could be applied for further validation of Leg1 using pig models.
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Affiliation(s)
- Yanna Dang
- Department of Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Jin-Yang Wang
- Department of Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Chen Liu
- Department of Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Kun Zhang
- Department of Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Peng Jinrong
- Department of Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou, PR China
| | - Jin He
- Department of Animal Science, College of Animal Sciences, Zhejiang University, Hangzhou, PR China.
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11
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Cao Z, He S, Peng Y, Liao X, Lu H. Nanocurcumin Inhibits Angiogenesis via Down-regulating hif1a/VEGF-A Signaling in Zebrafish. Curr Neurovasc Res 2020; 17:147-154. [PMID: 32031071 DOI: 10.2174/1567202617666200207130039] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2019] [Revised: 01/10/2020] [Accepted: 01/15/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Curcumin has anti-inflammatory, antioxidant and anticancer properties. Despite the considerable evidence showing that curcumin is an efficacious and safe compound for multiple medicinal benefits, there are some demerits with respect to the therapeutic effectiveness of curcumin, namely, poor stability and solubility, and its role in angiogenesis in vivo is still not yet clear. More recently, the biodegradable polymer nanoparticles have been developed. This offers promise for the therapeutic effectiveness of curcumin by increasing its bioavailability, solubility and retention time. METHODS Here, we compared the medicinal effectiveness of curcumin and nanocurcumin (NC), and found that nanocurcumin can inhibit angiogenesis more effectively than curcumin in zebrafish. Tests of proliferation and apoptosis showed no difference between nanocurcumin-treated and wildtype embryos. RESULTS qPCR and in situ hybridization experiments indicated that the VEGF signaling pathway genes, vegfa, VEGF-C and flt4 were all down-regulated after nanocurcumin treatment, and vegfa over-expression rescued the vascular defective phenotype. Moreover, hif1a expression also decreased and hif1a over-expression also rescued the vascular defective phenotype but the Notch signaling pathway had no difference after nanocurcumin treatment. CONCLUSION These results indicate that nano curcumin inhibits angiogenesis in zebrafish by downregulating hif1a/vegfa signaling pathway. Hence, our work reveals the key role of nanocurcumin in angiogenesis in vivo.
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Affiliation(s)
- Zigang Cao
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Ji'an, Jiangxi, China
| | - Shicong He
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Ji'an, Jiangxi, China
| | - Yuyang Peng
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Ji'an, Jiangxi, China
| | - Xinjun Liao
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Ji'an, Jiangxi, China
| | - Huiqiang Lu
- Jiangxi Engineering Laboratory of Zebrafish Modeling and Drug Screening for Human Diseases, Ji'an, Jiangxi, China
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12
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Radford BN, Han VKM. Evidence of increased hypoxia signaling in fetal liver from maternal nutrient restriction in mice. Pediatr Res 2020; 87:450-455. [PMID: 31185486 DOI: 10.1038/s41390-019-0447-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/19/2018] [Revised: 04/19/2019] [Accepted: 05/18/2019] [Indexed: 11/09/2022]
Abstract
BACKGROUND Intrauterine growth restriction (IUGR) is a pregnancy condition where fetal growth is reduced, and offspring from IUGR pregnancies are at increased risk for type II diabetes as adults. The liver is susceptible to fetal undernutrition experienced by IUGR infants and animal models of growth restriction. This study aimed to examine hepatic expression changes in a maternal nutrient restriction (MNR) mouse model of IUGR to understand fetal adaptations that influence adult metabolism. METHODS Liver samples of male offspring from MNR (70% of ad libitum starting at E6.5) or control pregnancies were obtained at E18.5 and differential expression was assessed by RNAseq and western blots. RESULTS Forty-nine differentially expressed (FDR < 0.1) transcripts were enriched in hypoxia-inducible pathways including Fkbp5 (1.6-fold change), Ccng2 (1.5-fold change), Pfkfb3 (1.5-fold change), Kdm3a (1.2-fold change), Btg2 (1.6-fold change), Vhl (1.3-fold change), and Hif-3a (1.3-fold change) (FDR < 0.1). Fkbp5, Pfkfb3, Kdm3a, and Hif-3a were confirmed by qPCR, but only HIF-2a (2.2-fold change, p = 0.002) and HIF-3a (1.3 p = 0.03) protein were significantly increased. CONCLUSION Although a moderate impact, these data support evidence of fetal adaptation to reduced nutrients by increased hypoxia signaling in the liver.
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Affiliation(s)
- Bethany N Radford
- Department of Biochemistry, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada.,Children's Health Research Institute, London, ON, Canada
| | - Victor K M Han
- Department of Biochemistry, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada. .,Children's Health Research Institute, London, ON, Canada. .,Department of Pediatrics, Schulich School of Medicine & Dentistry, Western University, London, ON, Canada.
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13
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Paul T, Basu S. Vascular onco-therapies targeting continuous and intermittent intra-tumor hypoxia. JOURNAL OF CANCER RESEARCH AND PRACTICE 2020. [DOI: 10.4103/jcrp.jcrp_9_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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14
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Novianti T, Juniantito V, Jusuf AA, Arida EA, Jusman SWA, Sadikin M. Expression and role of HIF-1α and HIF-2α in tissue regeneration: a study of hypoxia in house gecko tail regeneration. Organogenesis 2019; 15:69-84. [PMID: 31409194 PMCID: PMC6746546 DOI: 10.1080/15476278.2019.1644889] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022] Open
Abstract
The house gecko (Hemidactylus platyurus) has evolved the ability to autotomize its tail when threatened. The lost part is then regrown via epimorphic regeneration in a process that requires high energy and oxygen levels. Oxygen demand is therefore likely to outstrip supply and this can result in relative hypoxia in the tissues of the regenerating tail. The hypoxic state is stabilized by the Hypoxia Inducible Factor-1α (HIF-1α) and HIF-2α proteins. We induced tail autotomy in 30 mal H. platyurus adults using a standard procedure and then collected samples of the regenerated tail tissue on days 1, 3, 5, 8, 10, 13, 17, 21, 25, and 30 post autotomy. For each sample, mRNA expression was analyzed by qPCR, proteins were analyzed using Western Blot tests and immunohistochemistry, and the histological structure was analyzed using Hematoxylin and Eosin staining. On day 1, HIF-1α mRNA expression increased and the tissue was dominated by leucocyte and erythrocyte cells. HIF-1α mRNA expression peaked on day 3, at which time some cells were actively proliferating, migrating, and differentiating. At the same time as HIF-1α expression decreased, HIF-2α mRNA expression increased, as did overall cellular activity. HIF-2α expression increased more gradually but was present over a longer period of time than HIF-1α. We hypothesize that HIF-1α helps to initially stimulate the tissue regeneration process while HIF-2α functionally takes over the role of HIF-1α after HIF-1α succumbs to the oxygen conditions, but we suspect that both HIF-1α and HIF-2α play a role in overcoming the tissue’s hypoxic state.
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Affiliation(s)
- Titta Novianti
- Doctoral Program in Biomedical Science, Faculty of Medicine, Universitas Indonesia , Jakarta , Indonesia.,Department of Biotechnology, Universitas Esa Unggul , Jakarta , Indonesia
| | - Vetnizah Juniantito
- Department of Veterinary Clinic Reproduction and Pathology, Faculty of Veterinary Medicine, Agriculture Institute of Bogor , Bogor , Indonesia
| | - Ahmad Aulia Jusuf
- Department of Histology, Faculty of Medicine, Universitas Indonesia , Jakarta , Indonesia
| | - Evy Ayu Arida
- Indonesian Institute of Sciences (LIPI) Cibinong , Bogor , Indonesia
| | - Sri Widia A Jusman
- Center of Hypoxia and Oxidative Stress Studies (CHOSS), Faculty of Medicine, Universitas Indonesia , Jakarta , Indonesia.,Biochemistry & Molecular Biology Department, Faculty of Medicine, Universitas Indonesia , Jakarta , Indonesia
| | - Mohamad Sadikin
- Center of Hypoxia and Oxidative Stress Studies (CHOSS), Faculty of Medicine, Universitas Indonesia , Jakarta , Indonesia.,Biochemistry & Molecular Biology Department, Faculty of Medicine, Universitas Indonesia , Jakarta , Indonesia
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15
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Ayabe H, Anada T, Kamoya T, Sato T, Kimura M, Yoshizawa E, Kikuchi S, Ueno Y, Sekine K, Camp JG, Treutlein B, Ferguson A, Suzuki O, Takebe T, Taniguchi H. Optimal Hypoxia Regulates Human iPSC-Derived Liver Bud Differentiation through Intercellular TGFB Signaling. Stem Cell Reports 2018; 11:306-316. [PMID: 30033085 PMCID: PMC6092760 DOI: 10.1016/j.stemcr.2018.06.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2017] [Revised: 06/19/2018] [Accepted: 06/20/2018] [Indexed: 12/22/2022] Open
Abstract
Timely controlled oxygen (O2) delivery is crucial for the developing liver. However, the influence of O2 on intercellular communication during hepatogenesis is unclear. Using a human induced pluripotent stem cell-derived liver bud (hiPSC-LB) model, we found hypoxia induced with an O2-permeable plate promoted hepatic differentiation accompanied by TGFB1 and TGFB3 suppression. Conversely, extensive hypoxia generated with an O2-non-permeable plate elevated TGFBs and cholangiocyte marker expression. Single-cell RNA sequencing revealed that TGFB1 and TGFB3 are primarily expressed in the human liver mesenchyme and endothelium similar to in the hiPSC-LBs. Stromal cell-specific RNA interferences indicated the importance of TGFB signaling for hepatocytic differentiation in hiPSC-LB. Consistently, during mouse liver development, the Hif1a-mediated developmental hypoxic response is positively correlated with TGFB1 expression. These data provide insights into the mechanism that hypoxia-stimulated signals in mesenchyme and endothelium, likely through TGFB1, promote hepatoblast differentiation prior to fetal circulation establishment.
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Affiliation(s)
- Hiroaki Ayabe
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - Takahisa Anada
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Takuo Kamoya
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Tomoya Sato
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Masaki Kimura
- Division of Gastroenterology, Hepatology & Nutrition, Developmental Biology, Center for Stem Cell and Organoid Medicine (CuSTOM), Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA
| | - Emi Yoshizawa
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - Shunyuu Kikuchi
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - Yasuharu Ueno
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - Keisuke Sekine
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan
| | - J Gray Camp
- Max Planck Institute for Evolutionary Anthropology, Leipzig 04103, Germany
| | - Barbara Treutlein
- Max Planck Institute for Evolutionary Anthropology, Leipzig 04103, Germany
| | - Autumn Ferguson
- Division of Gastroenterology, Hepatology & Nutrition, Developmental Biology, Center for Stem Cell and Organoid Medicine (CuSTOM), Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA
| | - Osamu Suzuki
- Division of Craniofacial Function Engineering, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
| | - Takanori Takebe
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan; Division of Gastroenterology, Hepatology & Nutrition, Developmental Biology, Center for Stem Cell and Organoid Medicine (CuSTOM), Cincinnati Children's Hospital Medical Center, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA; Department of Pediatrics, University of Cincinnati College of Medicine, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA; Institute of Research, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo 113-8510, Japan.
| | - Hideki Taniguchi
- Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, Kanazawa-ku 3-9, Yokohama, Kanagawa 236-0004, Japan.
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16
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Tong Y, Li Z, Liang Y, Yu H, Liang X, Liu H, Cai X. Postoperative adjuvant TACE for patients of hepatocellular carcinoma in AJCC stage I: friend or foe? a propensity score analysis. Oncotarget 2018; 8:26671-26678. [PMID: 28460456 PMCID: PMC5432288 DOI: 10.18632/oncotarget.15793] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Accepted: 02/17/2017] [Indexed: 01/27/2023] Open
Abstract
BACKGROUND Although the transcatheter arterial chemoembolization (TACE) was demonstrated to be an alternative treatment of hepatocellular carcinoma with favorable oncological effect, the benefit of postoperative adjuvant TACE was still controversial. The aim of this study was to evaluate the effect of postoperative TACE in hepatocellular carcinoma. RESULTS The 1, 3, and 5-year overall and disease-free survival rates were comparable between Surgery+TACE and Surgery groups. In subgroup analysis, tumor size (≥ 5 cm) was detrimental to disease-free survival (p = 0.028) and an inferior tendency of overall survival was presented. Besides, repeated TACE for patients contributed to a poor disease-free survival (p = 0.005). While, postoperative adjuvant TACE improved the overall survival in patients with high preoperative alpha-fetoprotein or positive pathologically (p = 0.039 and p = 0.045). MATERIALS AND METHODS The data were collected from consecutive patients between January 2010 and September 2014. After propensity score matching, baseline characteristics, overall and disease-free survival were compared between two groups. Subsequently, univariate and subgroup analysis were carried on. CONCLUSIONS Our study indicated that single postoperative adjuvant TACE was beneficial for selected patients of stage I with tumor less than 5 cm, or high preoperative alpha-fetoprotein in serum or positive of alpha-fetoprotein pathologically.
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Affiliation(s)
- Yifan Tong
- Medical College of Zhejiang University, Hangzhou, China
| | - Zheyong Li
- Department of General Surgery, Sir Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, China
| | - Yuelong Liang
- Department of General Surgery, Sir Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, China
| | - Hong Yu
- Department of General Surgery, Sir Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, China
| | - Xiao Liang
- Department of General Surgery, Sir Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, China
| | - Hui Liu
- Department of Biological Treatment Research Center, Sir Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, China
| | - Xiujun Cai
- Department of General Surgery, Sir Run Run Shaw Hospital Affiliated to Medical College of Zhejiang University, Hangzhou, China
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17
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Noonan HR, Metelo AM, Kamei CN, Peterson RT, Drummond IA, Iliopoulos O. Loss of vhl in the zebrafish pronephros recapitulates early stages of human clear cell renal cell carcinoma. Dis Model Mech 2017; 9:873-84. [PMID: 27491085 PMCID: PMC5007981 DOI: 10.1242/dmm.024380] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Accepted: 06/21/2016] [Indexed: 12/25/2022] Open
Abstract
Patients with von Hippel–Lindau (VHL) disease harbor a germline mutation in the VHL gene leading to the development of several tumor types including clear cell renal cell carcinoma (ccRCC). In addition, the VHL gene is inactivated in over 90% of sporadic ccRCC cases. ‘Clear cell’ tumors contain large, proliferating cells with ‘clear cytoplasm’, and a reduced number of cilia. VHL inactivation leads to the stabilization of hypoxia inducible factors 1a and 2a [HIF1a and HIF2a (HIF2a is also known as EPAS1)] with consequent up-regulation of specific target genes involved in cell proliferation, angiogenesis and erythropoiesis. A zebrafish model with a homozygous inactivation in the VHL gene (vhl−/−) recapitulates several aspects of the human disease, including development of highly vascular lesions in the brain and the retina and erythrocytosis. Here, we characterize for the first time the epithelial abnormalities present in the kidney of the vhl−/− zebrafish larvae as a first step in building a model of ccRCC in zebrafish. Our data show that the vhl−/− zebrafish kidney is characterized by an increased tubule diameter, disorganized cilia, the dramatic formation of cytoplasmic lipid vesicles, glycogen accumulation, aberrant cell proliferation and abnormal apoptosis. This phenotype of the vhl−/− pronephros is reminiscent of clear cell histology, indicating that the vhl−/− mutant zebrafish might serve as a model of early stage RCC. Treatment of vhl−/− zebrafish embryos with a small-molecule HIF2a inhibitor rescued the pronephric abnormalities, underscoring the value of the zebrafish model in drug discovery for treatment of VHL disease and ccRCC. Summary: Zebrafish with an inactivating mutation in the vhl gene can be used as a model of early stage clear cell renal cell carcinoma, with applications for genetic studies and drug screens.
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Affiliation(s)
- Haley R Noonan
- Center for Cancer Research, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Ana M Metelo
- Center for Cancer Research, Massachusetts General Hospital, Boston, MA 02114, USA Department of Medicine, Harvard Medical School, Boston, MA 02115, USA Department of Life Sciences, Faculty of Sciences and Technology, University of Coimbra, Coimbra 3001-401, Portugal
| | - Caramai N Kamei
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA 02114, USA Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Randall T Peterson
- Center for Cancer Research, Massachusetts General Hospital, Boston, MA 02114, USA Department of Medicine, Harvard Medical School, Boston, MA 02115, USA Cardiovascular Research Center, Department of Medicine, Massachusetts General Hospital, Boston, MA 02114, USA Broad Institute of Harvard and MIT, Cambridge, MA 02114, USA
| | - Iain A Drummond
- Division of Nephrology, Department of Medicine, Massachusetts General Hospital, Boston, MA 02114, USA Department of Genetics, Harvard Medical School, Boston, MA 02115, USA
| | - Othon Iliopoulos
- Center for Cancer Research, Massachusetts General Hospital, Boston, MA 02114, USA Department of Medicine, Harvard Medical School, Boston, MA 02115, USA Division of Hematology-Oncology, Department of Medicine, Massachusetts General Hospital, Boston, MA 02142, USA
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18
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Gerri C, Marín-Juez R, Marass M, Marks A, Maischein HM, Stainier DYR. Hif-1α regulates macrophage-endothelial interactions during blood vessel development in zebrafish. Nat Commun 2017; 8:15492. [PMID: 28524872 PMCID: PMC5493593 DOI: 10.1038/ncomms15492] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 04/01/2017] [Indexed: 12/21/2022] Open
Abstract
Macrophages are known to interact with endothelial cells during developmental and pathological angiogenesis but the molecular mechanisms modulating these interactions remain unclear. Here, we show a role for the Hif-1α transcription factor in this cellular communication. We generated hif-1aa;hif-1ab double mutants in zebrafish, hereafter referred to as hif-1α mutants, and find that they exhibit impaired macrophage mobilization from the aorta-gonad-mesonephros (AGM) region as well as angiogenic defects and defective vascular repair. Importantly, macrophage ablation is sufficient to recapitulate the vascular phenotypes observed in hif-1α mutants, revealing for the first time a macrophage-dependent angiogenic process during development. Further substantiating our observations of vascular repair, we find that most macrophages closely associated with ruptured blood vessels are Tnfα-positive, a key feature of classically activated macrophages. Altogether, our data provide genetic evidence that Hif-1α regulates interactions between macrophages and endothelial cells starting with the mobilization of macrophages from the AGM. The molecular mechanism regulating macrophage interaction with endothelial cells during development is unclear. Here, the authors show that in zebrafish mutation of hypoxia-inducible factor-1α impairs macrophage mobilization from the aorta-gonad-mesonephros, causing defects in angiogenesis and vessel repair.
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Affiliation(s)
- Claudia Gerri
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Rubén Marín-Juez
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Michele Marass
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Alora Marks
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Hans-Martin Maischein
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
| | - Didier Y R Stainier
- Department of Developmental Genetics, Max Planck Institute for Heart and Lung Research, 61231 Bad Nauheim, Germany
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19
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The zebrafish miR-125c is induced under hypoxic stress via hypoxia-inducible factor 1α and functions in cellular adaptations and embryogenesis. Oncotarget 2017; 8:73846-73859. [PMID: 29088751 PMCID: PMC5650306 DOI: 10.18632/oncotarget.17994] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2017] [Accepted: 05/06/2017] [Indexed: 12/15/2022] Open
Abstract
Hypoxia is a unique environmental stress. Hypoxia inducible factor-lα (HIF-lα) is a major transcriptional regulator of cellular adaptations to hypoxic stress. MicroRNAs (miRNAs) as posttranscriptional gene expression regulators occupy a crucial role in cell survival under low-oxygen environment. Previous evidences suggested that miR-125c is involved in hypoxia adaptation, but its precise biological roles and the regulatory mechanism underlying hypoxic responses remain unknown. The present study showed that zebrafish miR-125c is upregulated by hypoxia in a Hif-lα-mediated manner in vitro and in vivo. Dual-luciferase assay revealed that cdc25a is a novel target of miR-125c. An inverse correlation between miR-125c and cdc25a was further confirmed in vivo, suggesting miR-125c as a crucial physiological inhibitor of cdc25a which responds to cellular hypoxia. Overexpression of miR-125c suppressed cell proliferation, led to cell cycle arrest at the G1 phase in ZF4 cells and induced apoptotic responses during embryo development. More importantly, miR-125c overexpression resulted in severe malformation and reduction of motility during zebrafish embryonic development. Taken together, we conclude that miR-125c plays a pivotal role in cellular adaptations to hypoxic stress at least in part through the Hif-1α/miR-125c/cdc25a signaling and has great impact on zebrafish early embryonic development.
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20
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Kim H, Greenald D, Vettori A, Markham E, Santhakumar K, Argenton F, van Eeden F. Zebrafish as a model for von Hippel Lindau and hypoxia-inducible factor signaling. Methods Cell Biol 2017; 138:497-523. [DOI: 10.1016/bs.mcb.2016.07.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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21
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Kron P, Linecker M, Limani P, Schlegel A, Kambakamba P, Lehn JM, Nicolau C, Graf R, Humar B, Clavien PA. Hypoxia-driven Hif2a coordinates mouse liver regeneration by coupling parenchymal growth to vascular expansion. Hepatology 2016; 64:2198-2209. [PMID: 27628483 DOI: 10.1002/hep.28809] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/27/2016] [Accepted: 07/28/2016] [Indexed: 01/09/2023]
Abstract
UNLABELLED Interaction between sinusoidal endothelial cells and hepatocytes is a prerequisite for liver function. Upon tissue loss, both liver cell populations need to be regenerated. Repopulation occurs in a coordinated pattern, first through the regeneration of parenchyme (hepatocytes), which then produces vascular endothelial growth factor (VEGF) to enable the subsequent angiogenic phase. The signals that instruct hepatocytes to induce timely VEGF remain unidentified. Given that liver is highly vascularized, we reasoned that fluctuations in oxygenation after tissue loss may contribute to the coordination between hepatocyte and sinusoidal endothelial cell proliferation. To prevent drops in oxygen after hepatectomy, mice were pretreated with inositol trispyrophosphate (ITPP), an allosteric effector of hemoglobin causing increased O2 release from heme under hypoxic conditions. ITPP treatment delayed liver weight gain after hepatectomy. Comparison with controls revealed the presence of a hypoxic period around the peak of hepatocyte mitosis. Inhibition of hypoxia led to deficient hepatocyte mitosis, suppressed the regenerative Vegf wave, and abrogated the subsequent reconstruction of the sinusoidal network. These ITPP effects were ongoing with the reduction in hepatocellular hypoxia inducible factor 2a (Hif2a). In contrast, Hif1a was unaffected by ITPP. Hif2a knockdown phenocopied all effects of ITPP, including the mitotic deficiencies, Vegf suppression, and angiogenic failure. CONCLUSIONS Oxygen is a key regulator of liver regeneration. Hypoxia-inherent to the expansion of parenchyme-activates Hif2a to couple hepatocyte mitosis with the angiogenic phase. Hif2a acts as a safeguard to initiate sinusoidal reconstruction only upon successful hepatocyte mitosis, thereby enforcing a timely order onto cell type-specific regeneration patterns. These findings portray the hypoxia-driven Hif2a-Vegf axis as a prime node in coordinating sinusoidal endothelial cell-hepatocyte crosstalk during liver regeneration. (Hepatology 2016;64:2198-2209).
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Affiliation(s)
- Philipp Kron
- Department of Surgery, Swiss Hepato-Pancreato-Biliary and Transplantation Center, University Hospital Zurich, Zurich, Switzerland
| | - Michael Linecker
- Department of Surgery, Swiss Hepato-Pancreato-Biliary and Transplantation Center, University Hospital Zurich, Zurich, Switzerland
| | - Perparim Limani
- Department of Surgery, Swiss Hepato-Pancreato-Biliary and Transplantation Center, University Hospital Zurich, Zurich, Switzerland
| | - Andrea Schlegel
- Department of Surgery, Swiss Hepato-Pancreato-Biliary and Transplantation Center, University Hospital Zurich, Zurich, Switzerland
| | - Patryk Kambakamba
- Department of Surgery, Swiss Hepato-Pancreato-Biliary and Transplantation Center, University Hospital Zurich, Zurich, Switzerland
| | - Jean-Marie Lehn
- Institut de Science et d'Ingénierie Supramoléculaires, Université de Strasbourg, Strasbourg, France
| | - Claude Nicolau
- Friedman School of Nutrition Science and Policy, Tufts University, Boston, MA
| | - Rolf Graf
- Department of Surgery, Swiss Hepato-Pancreato-Biliary and Transplantation Center, University Hospital Zurich, Zurich, Switzerland
| | - Bostjan Humar
- Department of Surgery, Swiss Hepato-Pancreato-Biliary and Transplantation Center, University Hospital Zurich, Zurich, Switzerland
| | - Pierre-Alain Clavien
- Department of Surgery, Swiss Hepato-Pancreato-Biliary and Transplantation Center, University Hospital Zurich, Zurich, Switzerland
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22
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Landgraf K, Strobach A, Kiess W, Körner A. Loss of mtch2 function impairs early development of liver, intestine and visceral adipocytes in zebrafish larvae. FEBS Lett 2016; 590:2852-61. [PMID: 27468124 DOI: 10.1002/1873-3468.12330] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2016] [Revised: 07/15/2016] [Accepted: 07/20/2016] [Indexed: 01/28/2023]
Abstract
The mitochondrial carrier homologue 2 (MTCH2) has been shown to be essential for embryogenesis in mice, and variants in the MTCH2 locus have been linked to obesity in humans. Here, we investigated the importance of mtch2 for embryogenesis and adipocyte formation in zebrafish in vivo. We show that mtch2 is conserved in zebrafish and broadly expressed during embryogenesis. Knock-down of mtch2 results in impaired development of liver and intestine, and is associated with a reduced number of adipocytes and impaired postembryonic growth. The findings indicate an essential role for mtch2 during organ development and adipogenesis in vivo.
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Affiliation(s)
- Kathrin Landgraf
- Center for Pediatric Research Leipzig (CPL), University Hospital for Children and Adolescents, University of Leipzig, Germany.,Medical Center AdiposityDiseases (IFB), University of Leipzig, Germany
| | - Ariane Strobach
- Center for Pediatric Research Leipzig (CPL), University Hospital for Children and Adolescents, University of Leipzig, Germany
| | - Wieland Kiess
- Center for Pediatric Research Leipzig (CPL), University Hospital for Children and Adolescents, University of Leipzig, Germany
| | - Antje Körner
- Center for Pediatric Research Leipzig (CPL), University Hospital for Children and Adolescents, University of Leipzig, Germany.,Medical Center AdiposityDiseases (IFB), University of Leipzig, Germany
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23
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Shinozawa T, Yoshikawa HY, Takebe T. Reverse engineering liver buds through self-driven condensation and organization towards medical application. Dev Biol 2016; 420:221-229. [PMID: 27364470 DOI: 10.1016/j.ydbio.2016.06.036] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2016] [Revised: 05/24/2016] [Accepted: 06/25/2016] [Indexed: 12/15/2022]
Abstract
The self-organizing tissue-based approach coupled with induced pluripotent stem (iPS) cell technology is evolving as a promising field for designing organoids in culture and is expected to achieve valuable practical outcomes in regenerative medicine and drug development. Organoids show properties of functional organs and represent an alternative to cell models in conventional two-dimensional differentiation platforms; moreover, organoids can be used to investigate mechanisms of development and disease, drug discovery and toxicity assessment. Towards a more complex and advanced organoid model, it is essential to incorporate multiple cell lineages including developing vessels. Using a self-condensation method, we recently demonstrated self-organizing "organ buds" of diverse systems together with human mesenchymal and endothelial progenitors, proposing a new reverse engineering method to generate a more complex organoid structure. In this section, we review characters of organ bud technology based on two important principles: self-condensation and self-organization focusing on liver bud as an example, and discuss their practicality in regenerative medicine and potential as research tools for developmental biology and drug discovery.
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Affiliation(s)
- Tadahiro Shinozawa
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA
| | - Hiroshi Y Yoshikawa
- Department of Chemistry, Saitama University, Shimo-okubo 255, Sakura-ku, Saitama 338-8570, Japan.
| | - Takanori Takebe
- Department of Pediatrics, Cincinnati Children's Hospital Medical Center, University of Cincinnati, 3333 Burnet Avenue, Cincinnati, OH 45229-3039, USA; Department of Regenerative Medicine, Yokohama City University Graduate School of Medicine, 3-9 Fukuura, Kanazawa-ku, Yokohama, Kanagawa 236-0004, Japan; PRESTO, Japan Science and Technology Agency, 4-1-8 Honcho, Kawaguchi, Saitama 332-0012, Japan.
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24
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Bhagat M, Palanichamy JK, Ramalingam P, Mudassir M, Irshad K, Chosdol K, Sarkar C, Seth P, Goswami S, Sinha S, Chattopadhyay P. HIF-2α mediates a marked increase in migration and stemness characteristics in a subset of glioma cells under hypoxia by activating an Oct-4/Sox-2-Mena (INV) axis. Int J Biochem Cell Biol 2016; 74:60-71. [DOI: 10.1016/j.biocel.2016.02.017] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2015] [Revised: 01/25/2016] [Accepted: 02/22/2016] [Indexed: 12/14/2022]
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25
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Hu M, Bai Y, Zhang C, Liu F, Cui Z, Chen J, Peng J. Liver-Enriched Gene 1, a Glycosylated Secretory Protein, Binds to FGFR and Mediates an Anti-stress Pathway to Protect Liver Development in Zebrafish. PLoS Genet 2016; 12:e1005881. [PMID: 26901320 PMCID: PMC4764323 DOI: 10.1371/journal.pgen.1005881] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2015] [Accepted: 01/28/2016] [Indexed: 01/19/2023] Open
Abstract
Unlike mammals and birds, teleost fish undergo external embryogenesis, and therefore their embryos are constantly challenged by stresses from their living environment. These stresses, when becoming too harsh, will cause arrest of cell proliferation, abnormal cell death or senescence. Such organisms have to evolve a sophisticated anti-stress mechanism to protect the process of embryogenesis/organogenesis. However, very few signaling molecule(s) mediating such activity have been identified. liver-enriched gene 1 (leg1) is an uncharacterized gene that encodes a novel secretory protein containing a single domain DUF781 (domain of unknown function 781) that is well conserved in vertebrates. In the zebrafish genome, there are two copies of leg1, namely leg1a and leg1b. leg1a and leg1b are closely linked on chromosome 20 and share high homology, but are differentially expressed. In this report, we generated two leg1a mutant alleles using the TALEN technique, then characterized liver development in the mutants. We show that a leg1a mutant exhibits a stress-dependent small liver phenotype that can be prevented by chemicals blocking the production of reactive oxygen species. Further studies reveal that Leg1a binds to FGFR3 and mediates a novel anti-stress pathway to protect liver development through enhancing Erk activity. More importantly, we show that the binding of Leg1a to FGFR relies on the glycosylation at the 70th asparagine (Asn70 or N70), and mutating the Asn70 to Ala70 compromised Leg1’s function in liver development. Therefore, Leg1 plays a unique role in protecting liver development under different stress conditions by serving as a secreted signaling molecule/modulator. Although being challenged by stresses from their living environment during embryogenesis, teleost fish harbor a robust genetic program dictating liver development as long as any environmental change, including temperature or natural UV irradiation, is not detrimental. It is therefore of interest to explore the mechanism(s) behind this phenomenon. We showed that Liver-enriched gene 1 (Leg1) plays a unique role in protecting liver development under different stress conditions by serving as a secretory signaling molecule/modulator that binds to FGF receptor and activates the Erk signaling pathway. This finding may explain the adaption of teleost fish in coping with environmental changes.
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Affiliation(s)
- Minjie Hu
- MOE Key Laboratory for Molecular Animal Nutrition, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Yun Bai
- MOE Key Laboratory for Molecular Animal Nutrition, College of Animal Sciences, Zhejiang University, Hangzhou, China
| | - Chunxia Zhang
- Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Feng Liu
- Institute of Zoology, Chinese Academy of Sciences, Beijing, China
| | - Zongbin Cui
- Institute of Hydrobiology, Chinese Academy of Sciences, Wuhan, China
| | - Jun Chen
- College of Life Sciences, Zhejiang University, Hangzhou, China
- * E-mail: (JC); (JP)
| | - Jinrong Peng
- MOE Key Laboratory for Molecular Animal Nutrition, College of Animal Sciences, Zhejiang University, Hangzhou, China
- * E-mail: (JC); (JP)
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Abstract
We previously demonstrated that, while changes in temperature produce dramatic shifts in the time elapsed during
Drosophila melanogaster embryogenesis, the relative timing of events within embryogenesis does not change. However, it was unclear if this uniform scaling is an intrinsic property of developing embryos, or if it is specific to thermal fluctuations. To investigate this, here we characterize the embryonic response to changes in oxygen concentration, which also impact developmental rate, using time-lapse imaging, and find it fundamentally different from the temperature response. Most notably, changes in oxygen levels drive developmental heterochrony, with the timing of several morphological processes showing distinct scaling behaviors. Gut formation is severely slowed by decreases in oxygen, while head involution and syncytial development are less impacted than the rest of development, and the order of several developmental landmarks is inverted at different oxygen levels. These data reveal that the uniform scaling seen with changes in temperature is not a trivial consequence of adjusting developmental rate. The developmental rate changes produced by changing oxygen concentrations dwarf those induced by temperature, and greatly impact survival. While extreme temperatures increase early embryo mortality, mild hypoxia increases arrest and death during mid-embryogenesis and mild hyperoxia increases survival over normoxia.
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Affiliation(s)
- Steven G Kuntz
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA, USA ; Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA, USA
| | - Michael B Eisen
- Department of Molecular and Cell Biology, University of California, Berkeley, Berkeley, CA, USA ; Howard Hughes Medical Institute, University of California, Berkeley, Berkeley, CA, USA ; Department of Integrative Biology, University of California, Berkeley, CA, USA
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27
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Lu JW, Ho YJ, Yang YJ, Liao HA, Ciou SC, Lin LI, Ou DL. Zebrafish as a disease model for studying human hepatocellular carcinoma. World J Gastroenterol 2015; 21:12042-12058. [PMID: 26576090 PMCID: PMC4641123 DOI: 10.3748/wjg.v21.i42.12042] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/16/2015] [Revised: 05/28/2015] [Accepted: 08/31/2015] [Indexed: 02/07/2023] Open
Abstract
Liver cancer is one of the world’s most common cancers and the second leading cause of cancer deaths. Hepatocellular carcinoma (HCC), a primary hepatic cancer, accounts for 90%-95% of liver cancer cases. The pathogenesis of HCC consists of a stepwise process of liver damage that extends over decades, due to hepatitis, fatty liver, fibrosis, and cirrhosis before developing fully into HCC. Multiple risk factors are highly correlated with HCC, including infection with the hepatitis B or C viruses, alcohol abuse, aflatoxin exposure, and metabolic diseases. Over the last decade, genetic alterations, which include the regulation of multiple oncogenes or tumor suppressor genes and the activation of tumorigenesis-related pathways, have also been identified as important factors in HCC. Recently, zebrafish have become an important living vertebrate model organism, especially for translational medical research. In studies focusing on the biology of cancer, carcinogen induced tumors in zebrafish were found to have many similarities to human tumors. Several zebrafish models have therefore been developed to provide insight into the pathogenesis of liver cancer and the related drug discovery and toxicology, and to enable the evaluation of novel small-molecule inhibitors. This review will focus on illustrative examples involving the application of zebrafish models to the study of human liver disease and HCC, through transgenesis, genome editing technology, xenografts, drug discovery, and drug-induced toxic liver injury.
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28
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Greenald D, Jeyakani J, Pelster B, Sealy I, Mathavan S, van Eeden FJ. Genome-wide mapping of Hif-1α binding sites in zebrafish. BMC Genomics 2015; 16:923. [PMID: 26559940 PMCID: PMC4642629 DOI: 10.1186/s12864-015-2169-x] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2015] [Accepted: 10/31/2015] [Indexed: 02/08/2023] Open
Abstract
Background Hypoxia Inducible Factor (HIF) regulates a cascade of transcriptional events in response to decreased oxygenation, acting from the cellular to the physiological level. This response is evolutionarily conserved, allowing the use of zebrafish (Danio rerio) as a model for studying the hypoxic response. Activation of the hypoxic response can be achieved in zebrafish by homozygous null mutation of the von Hippel-Lindau (vhl) tumour suppressor gene. Previous work from our lab has focused on the phenotypic characterisation of this mutant, establishing the links between vhl mutation, the hypoxic response and cancer. To further develop fish as a model for studying hypoxic signalling, we examine the transcriptional profile of the vhl mutant with respect to Hif-1α. As our approach uses embryos consisting of many cell types, it has the potential to uncover additional HIF regulated genes that have escaped detection in analogous mammalian cell culture studies. Results We performed high-density oligonucleotide microarray analysis of the gene expression changes in von Hippel-Lindau mutant zebrafish, which identified up-regulation of well-known hypoxia response genes and down-regulation of genes primarily involved in lipid processing. To identify the dependency of these transcriptional changes on HIF, we undertook Chromatin Immunoprecipitation linked next generation sequencing (ChIP-seq) for the transcription factor Hypoxia Inducible Factor 1α (HIF-1α). We identified HIF-1α binding sites across the genome, with binding sites showing enrichment for an RCGTG motif, showing conservation with the mammalian hypoxia response element. Conclusions Transcriptome analysis of vhl mutant embryos detected activation of key hypoxia response genes seen in human cell models of hypoxia, but also suppression of many genes primarily involved in lipid processing. ChIP-seq analysis of Hif-1α binding sites unveiled an unprecedented number of loci, with a high proportion containing a canonical hypoxia response element. Whether these sites are functional remains unknown, nevertheless their frequent location near transcriptional start sites suggests functionality, and will allow for investigation into the potential hypoxic regulation of genes in their vicinity. We expect that our data will be an excellent starting point for analysis of both fish and mammalian gene regulation by HIF. Electronic supplementary material The online version of this article (doi:10.1186/s12864-015-2169-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- David Greenald
- Bateson Centre, Department of Biomedical Science, The University of Sheffield, Western Bank, Sheffield, UK.
| | - Justin Jeyakani
- Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, Singapore, 308232, Singapore. .,The Genome Institute of Singapore, Biopolis, Biopolis Street, Singapore, Singapore.
| | - Bernd Pelster
- Institute of Zoology, University of Innsbruck, Technikerstr, Innsbruck, Austria.
| | - Ian Sealy
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, UK.
| | - Sinnakaruppan Mathavan
- Lee Kong Chian School of Medicine, Nanyang Technological University, 11 Mandalay Road, Singapore, 308232, Singapore. .,The Genome Institute of Singapore, Biopolis, Biopolis Street, Singapore, Singapore.
| | - Fredericus J van Eeden
- Bateson Centre, Department of Biomedical Science, The University of Sheffield, Western Bank, Sheffield, UK.
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29
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Huang C, Chen N, Wu X, Huang C, He Y, Tang R, Wang W, Wang H. The zebrafish miR‐462/miR‐731 cluster is induced under hypoxic stress
via
hypoxia‐inducible factor 1α and functions in cellular adaptations. FASEB J 2015; 29:4901-13. [DOI: 10.1096/fj.14-267104] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2014] [Accepted: 08/03/2015] [Indexed: 12/13/2022]
Affiliation(s)
- Chun‐Xiao Huang
- Key Laboratory of Freshwater Animal Breeding and Key Laboratory of Agricultural Animal GeneticsBreeding and Reproduction, Ministry of Education, College of FisheryHuazhong Agricultural UniversityWuhanHubeiChina
| | - Nan Chen
- Key Laboratory of Freshwater Animal Breeding and Key Laboratory of Agricultural Animal GeneticsBreeding and Reproduction, Ministry of Education, College of FisheryHuazhong Agricultural UniversityWuhanHubeiChina
| | - Xin‐Jie Wu
- Key Laboratory of Freshwater Animal Breeding and Key Laboratory of Agricultural Animal GeneticsBreeding and Reproduction, Ministry of Education, College of FisheryHuazhong Agricultural UniversityWuhanHubeiChina
| | - Cui‐Hong Huang
- Key Laboratory of Freshwater Animal Breeding and Key Laboratory of Agricultural Animal GeneticsBreeding and Reproduction, Ministry of Education, College of FisheryHuazhong Agricultural UniversityWuhanHubeiChina
| | - Yan He
- Key Laboratory of Freshwater Animal Breeding and Key Laboratory of Agricultural Animal GeneticsBreeding and Reproduction, Ministry of Education, College of FisheryHuazhong Agricultural UniversityWuhanHubeiChina
| | - Rong Tang
- Key Laboratory of Freshwater Animal Breeding and Key Laboratory of Agricultural Animal GeneticsBreeding and Reproduction, Ministry of Education, College of FisheryHuazhong Agricultural UniversityWuhanHubeiChina
- Freshwater Aquaculture Collaborative Innovation Center of Hubei ProvinceWuhanHubeiChina
| | - Wei‐Min Wang
- Key Laboratory of Freshwater Animal Breeding and Key Laboratory of Agricultural Animal GeneticsBreeding and Reproduction, Ministry of Education, College of FisheryHuazhong Agricultural UniversityWuhanHubeiChina
- Freshwater Aquaculture Collaborative Innovation Center of Hubei ProvinceWuhanHubeiChina
| | - Huan‐Ling Wang
- Key Laboratory of Freshwater Animal Breeding and Key Laboratory of Agricultural Animal GeneticsBreeding and Reproduction, Ministry of Education, College of FisheryHuazhong Agricultural UniversityWuhanHubeiChina
- Freshwater Aquaculture Collaborative Innovation Center of Hubei ProvinceWuhanHubeiChina
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Liu F, Dong X, Lv H, Xiu P, Li T, Wang F, Xu Z, Li J. Targeting hypoxia-inducible factor-2α enhances sorafenib antitumor activity via β-catenin/C-Myc-dependent pathways in hepatocellular carcinoma. Oncol Lett 2015; 10:778-784. [PMID: 26622569 DOI: 10.3892/ol.2015.3315] [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: 09/17/2014] [Accepted: 05/07/2015] [Indexed: 12/12/2022] Open
Abstract
Sorafenib is a type of multikinase inhibitor that exhibits antiangiogenic and antiproliferative effects; in addition, sorafenib is a unique first-line drug recommended for the treatment of advanced hepatocellular carcinoma (HCC). However, the effectiveness of HCC treatment remains poor due to acquired drug resistance. It has been suggested that hypoxia, induced as a results of the antiangiogenic effects of sustained sorafenib treatment, may be an important factor in sorafenib resistance. The transcription factor hypoxia-inducible factor (HIF)-2α has been reported to be associated with cell proliferation under hypoxic conditions; therefore, it was hypothesized that hypoxia may enhance tumor cell proliferation via this mechanism. The present study aimed to evaluate whether the knock-down of HIF-2α was able to enhance the therapeutic efficacy of sorafenib in order to effectively treat HCC. The results demonstrated that hypoxia protected HCC cells against sorafenib; however, short hairpin RNA-HIF-2α transfection in combination with sorafenib treatment exhibited a significantly synergistic effect against HCC cell proliferation. In addition, HCC cells acquired increased β-catenin/C-Myc expression, which enhanced proliferation under hypoxic conditions; however, targeted knock-down of HIF-2α or C-Myc markedly decreased cell proliferation in HCC cells. In conclusion, the results of the present study indicated that the targeted knock-down of HIF-2α in combination with sorafenib may be a promising strategy for the treatment of HCC.
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Affiliation(s)
- Feng Liu
- Department of General Surgery, Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Xiaofeng Dong
- Department of Hepatobiliary Surgery, The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi 530021, P.R. China
| | - Hong Lv
- Department of Hematology, The Second Hospital of Shandong University, Jinan, Shandong 250033, P.R. China
| | - Peng Xiu
- Department of General Surgery, Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Tao Li
- Department of General Surgery, Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Fuhai Wang
- Department of General Surgery, Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Zongzhen Xu
- Department of General Surgery, Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
| | - Jie Li
- Department of General Surgery, Qianfoshan Hospital, Shandong University, Jinan, Shandong 250014, P.R. China
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31
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Id2a is required for hepatic outgrowth during liver development in zebrafish. Mech Dev 2015; 138 Pt 3:399-414. [PMID: 26022495 DOI: 10.1016/j.mod.2015.05.001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Revised: 04/24/2015] [Accepted: 05/14/2015] [Indexed: 12/19/2022]
Abstract
During development, inhibitor of DNA binding (Id) proteins, a subclass of the helix-loop-helix family of proteins, regulate cellular proliferation, differentiation, and apoptosis in various organs. However, a functional role of Id2a in liver development has not yet been reported. Here, using zebrafish as a model organism, we provide in vivo evidence that Id2a regulates hepatoblast proliferation and cell death during liver development. Initially, in the liver, id2a is expressed in hepatoblasts and after their differentiation, id2a expression is restricted to biliary epithelial cells. id2a knockdown in zebrafish embryos had no effect on hepatoblast specification or hepatocyte differentiation. However, liver size was greatly reduced in id2a morpholino-injected embryos, indicative of a hepatic outgrowth defect attributable to the significant decrease in proliferating hepatoblasts concomitant with the significant increase in hepatoblast cell death. Altogether, these data support the role of Id2a as an important regulator of hepatic outgrowth via modulation of hepatoblast proliferation and survival during liver development in zebrafish.
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