1
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Fonódi M, Nagy L, Boratkó A. Role of Protein Phosphatases in Tumor Angiogenesis: Assessing PP1, PP2A, PP2B and PTPs Activity. Int J Mol Sci 2024; 25:6868. [PMID: 38999976 PMCID: PMC11241275 DOI: 10.3390/ijms25136868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2024] [Revised: 06/19/2024] [Accepted: 06/20/2024] [Indexed: 07/14/2024] Open
Abstract
Tumor angiogenesis, the formation of new blood vessels to support tumor growth and metastasis, is a complex process regulated by a multitude of signaling pathways. Dysregulation of signaling pathways involving protein kinases has been extensively studied, but the role of protein phosphatases in angiogenesis within the tumor microenvironment remains less explored. However, among angiogenic pathways, protein phosphatases play critical roles in modulating signaling cascades. This review provides a comprehensive overview of the involvement of protein phosphatases in tumor angiogenesis, highlighting their diverse functions and mechanisms of action. Protein phosphatases are key regulators of cellular signaling pathways by catalyzing the dephosphorylation of proteins, thereby modulating their activity and function. This review aims to assess the activity of the protein tyrosine phosphatases and serine/threonine phosphatases. These phosphatases exert their effects on angiogenic signaling pathways through various mechanisms, including direct dephosphorylation of angiogenic receptors and downstream signaling molecules. Moreover, protein phosphatases also crosstalk with other signaling pathways involved in angiogenesis, further emphasizing their significance in regulating tumor vascularization, including endothelial cell survival, sprouting, and vessel maturation. In conclusion, this review underscores the pivotal role of protein phosphatases in tumor angiogenesis and accentuate their potential as therapeutic targets for anti-angiogenic therapy in cancer.
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Affiliation(s)
| | | | - Anita Boratkó
- Department of Medical Chemistry, Faculty of Medicine, University of Debrecen, Egyetem tér 1, H-4032 Debrecen, Hungary; (M.F.); (L.N.)
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2
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Jo HR, Hwang J, Jeong JH. MicroRNA miR-214-5p induces senescence of microvascular endothelial cells by targeting the JAG1/Notch signaling pathway. Noncoding RNA Res 2023; 8:385-391. [PMID: 37260583 PMCID: PMC10227379 DOI: 10.1016/j.ncrna.2023.05.002] [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: 02/10/2023] [Revised: 04/10/2023] [Accepted: 05/01/2023] [Indexed: 06/02/2023] Open
Abstract
During cellular senescence, irreversible cell cycle arrest is accompanied by morphological and genetic alterations. MicroRNAs (miRNAs) play a critical role in regulating senescence by modulating the abundance of crucial senescence regulatory proteins. Therefore, to identify novel senescence-associated miRNAs, we analyzed differentially expressed miRNAs in microvascular endothelial cells (MVEC). Among the 80 differentially expressed miRNAs in replicative senescent MVECs, 16 miRNAs of unknown gene ontology were used in the senescence-associated β-galactosidase assay. Thus, we identified miR-214-5p as having high senescence-inducing activity, inhibiting the proliferation and angiogenesis activity of MVECs. To reveal the senescence-regulating mechanism of miR-214-5p, we searched for target genes through sequence- and literature-based analysis. Molecular manipulation of miR-214-5p demonstrated that miR-214-5p regulated the expression and function of Jagged 1 (JAG1) in senescent MVECs. Silencing JAG1 or downstream genes of JAG1-Notch signaling, accelerated the senescence of MVECs. Additionally, ectopic overexpression of JAG1 reversed the senescence-inducing activity of miR-214-5p. In conclusion, we identified miR-214-5p as a senescence-associated miRNA. Targeting miR-214-5p may be a potential strategy to delay vascular aging and overcome the detrimental effects of senescence and age-related diseases.
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Affiliation(s)
- Hye-ram Jo
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Science, Seoul, 01812, South Korea
- Radiological and Medico-Oncological Sciences, University of Science and Technology, Daejeon, 34113, South Korea
| | - Jiwon Hwang
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Science, Seoul, 01812, South Korea
- Department of Life Sciences, Korea University, Seoul, 02841, South Korea
| | - Jae-Hoon Jeong
- Division of Radiation Biomedical Research, Korea Institute of Radiological & Medical Science, Seoul, 01812, South Korea
- Radiological and Medico-Oncological Sciences, University of Science and Technology, Daejeon, 34113, South Korea
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3
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Chiang IKN, Graus MS, Kirschnick N, Davidson T, Luu W, Harwood R, Jiang K, Li B, Wong YY, Moustaqil M, Lesieur E, Skoczylas R, Kouskoff V, Kazenwadel J, Arriola‐Martinez L, Sierecki E, Gambin Y, Alitalo K, Kiefer F, Harvey NL, Francois M. The blood vasculature instructs lymphatic patterning in a SOX7-dependent manner. EMBO J 2023; 42:e109032. [PMID: 36715213 PMCID: PMC9975944 DOI: 10.15252/embj.2021109032] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2021] [Revised: 12/15/2022] [Accepted: 12/22/2022] [Indexed: 01/31/2023] Open
Abstract
Despite a growing catalog of secreted factors critical for lymphatic network assembly, little is known about the mechanisms that modulate the expression level of these molecular cues in blood vascular endothelial cells (BECs). Here, we show that a BEC-specific transcription factor, SOX7, plays a crucial role in a non-cell-autonomous manner by modulating the transcription of angiocrine signals to pattern lymphatic vessels. While SOX7 is not expressed in lymphatic endothelial cells (LECs), the conditional loss of SOX7 function in mouse embryos causes a dysmorphic dermal lymphatic phenotype. We identify novel distant regulatory regions in mice and humans that contribute to directly repressing the transcription of a major lymphangiogenic growth factor (Vegfc) in a SOX7-dependent manner. Further, we show that SOX7 directly binds HEY1, a canonical repressor of the Notch pathway, suggesting that transcriptional repression may also be modulated by the recruitment of this protein partner at Vegfc genomic regulatory regions. Our work unveils a role for SOX7 in modulating downstream signaling events crucial for lymphatic patterning, at least in part via the transcriptional repression of VEGFC levels in the blood vascular endothelium.
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Affiliation(s)
- Ivy K N Chiang
- The Centenary Institute, David Richmond Program for Cardio‐Vascular Research: Gene Regulation and Editing, Sydney Medical SchoolUniversity of SydneySydneyNSWAustralia
| | - Matthew S Graus
- The Centenary Institute, David Richmond Program for Cardio‐Vascular Research: Gene Regulation and Editing, Sydney Medical SchoolUniversity of SydneySydneyNSWAustralia
| | - Nils Kirschnick
- European Institute for Molecular Imaging (EIMI)University of MünsterMünsterGermany
| | - Tara Davidson
- The Centenary Institute, David Richmond Program for Cardio‐Vascular Research: Gene Regulation and Editing, Sydney Medical SchoolUniversity of SydneySydneyNSWAustralia
| | - Winnie Luu
- The Centenary Institute, David Richmond Program for Cardio‐Vascular Research: Gene Regulation and Editing, Sydney Medical SchoolUniversity of SydneySydneyNSWAustralia
| | - Richard Harwood
- Sydney Microscopy and MicroanalysisUniversity of SydneySydneyNSWAustralia
| | - Keyi Jiang
- The Centenary Institute, David Richmond Program for Cardio‐Vascular Research: Gene Regulation and Editing, Sydney Medical SchoolUniversity of SydneySydneyNSWAustralia
| | - Bitong Li
- The Centenary Institute, David Richmond Program for Cardio‐Vascular Research: Gene Regulation and Editing, Sydney Medical SchoolUniversity of SydneySydneyNSWAustralia
| | - Yew Yan Wong
- The Genome Imaging CenterThe Centenary InstituteSydneyNSWAustralia
| | - Mehdi Moustaqil
- EMBL Australia Node in Single Molecule Science, and School of Medical SciencesUniversity of New South WalesSydneyNSWAustralia
| | - Emmanuelle Lesieur
- Institute for Molecular BioscienceThe University of QueenslandSt. LuciaQLDAustralia
| | - Renae Skoczylas
- Institute for Molecular BioscienceThe University of QueenslandSt. LuciaQLDAustralia
| | - Valerie Kouskoff
- Division of Developmental Biology & MedicineThe University of ManchesterManchesterUK
| | - Jan Kazenwadel
- Centre for Cancer BiologyUniversity of South Australia and SA PathologyAdelaideSAAustralia
| | - Luis Arriola‐Martinez
- Centre for Cancer BiologyUniversity of South Australia and SA PathologyAdelaideSAAustralia
| | - Emma Sierecki
- EMBL Australia Node in Single Molecule Science, and School of Medical SciencesUniversity of New South WalesSydneyNSWAustralia
| | - Yann Gambin
- EMBL Australia Node in Single Molecule Science, and School of Medical SciencesUniversity of New South WalesSydneyNSWAustralia
| | - Kari Alitalo
- Wihuri Research Institute and Translational Cancer Medicine Program, Faculty of MedicineUniversity of HelsinkiHelsinkiFinland
| | - Friedmann Kiefer
- European Institute for Molecular Imaging (EIMI)University of MünsterMünsterGermany
| | - Natasha L Harvey
- Centre for Cancer BiologyUniversity of South Australia and SA PathologyAdelaideSAAustralia
| | - Mathias Francois
- The Centenary Institute, David Richmond Program for Cardio‐Vascular Research: Gene Regulation and Editing, Sydney Medical SchoolUniversity of SydneySydneyNSWAustralia
- The Genome Imaging CenterThe Centenary InstituteSydneyNSWAustralia
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4
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Palo A, Patel SA, Sahoo B, Chowdary TK, Dixit M. FRG1 is a direct transcriptional regulator of nonsense-mediated mRNA decay genes. Genomics 2023; 115:110539. [PMID: 36521634 DOI: 10.1016/j.ygeno.2022.110539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Revised: 12/04/2022] [Accepted: 12/10/2022] [Indexed: 12/14/2022]
Abstract
FRG1 is the primary candidate gene for Fascioscapulohumeral Muscular Dystrophy. So far, its role has been reported in muscle development, vasculogenesis, angiogenesis, and tumorigenesis. Mechanistically studies suggest FRG1's role in RNA biogenesis which may have implications in multiple physiological processes and diseases, including tumorigenesis. Its probable role as hnRNP and association with NMD-related genes prompted us to look into FRG1's effect on NMD gene expression and the mechanism. Using microarray profiling in cell lines, we found that FRG1 altered the mRNA surveillance pathway and associated pathways, such as RNA transport and spliceosome machinery molecules. Multiple sequence alignment of core factors, namely, UPF1, UPF3B, and SMG1, showed conserved stretches of nucleotide sequence 'CTGGG'. Structural modeling followed by EMSA, ChIP-qPCR, and luciferase reporter assays showed 'CTGGG' as a FRG1 binding site. Analysis of the publicly available datasets showed that the expression of FRG1 correlates with NMD genes in different tissue types. We validated the effect of FRG1 on NMD gene transcription by qRT-PCR. Overall, FRG1 might be a transcriptional regulator of NMD genes.
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Affiliation(s)
- Ananya Palo
- National Institute of Science Education and Research, School of Biological Sciences, Bhubaneswar, Odisha 752050, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Saket Awadhesbhai Patel
- National Institute of Science Education and Research, School of Biological Sciences, Bhubaneswar, Odisha 752050, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Bibekananda Sahoo
- National Institute of Science Education and Research, School of Biological Sciences, Bhubaneswar, Odisha 752050, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Tirumala Kumar Chowdary
- National Institute of Science Education and Research, School of Biological Sciences, Bhubaneswar, Odisha 752050, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India
| | - Manjusha Dixit
- National Institute of Science Education and Research, School of Biological Sciences, Bhubaneswar, Odisha 752050, India; Homi Bhabha National Institute, Training School Complex, Anushakti Nagar, Mumbai 400094, India.
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5
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Ato S, Fukada SI, Kokubo H, Ogasawara R. Implication of satellite cell behaviors in capillary growth via VEGF expression-independent mechanism in response to mechanical loading in HeyL-null mice. Am J Physiol Cell Physiol 2022; 322:C275-C282. [PMID: 35020502 DOI: 10.1152/ajpcell.00343.2021] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2021] [Revised: 01/04/2022] [Accepted: 01/04/2022] [Indexed: 11/22/2022]
Abstract
Angiogenesis and muscle satellite cell (SC)-mediated myonuclear accretion are considered essential for the robust response of contraction-induced muscle hypertrophy. Moreover, both myonucleus and SCs are physically adjacent to capillaries and are the major sites for the expression of proangiogenic factors, such as VEGF, in the skeletal muscle. Thus, events involving the addition of new myonuclei via activation of SCs may play an important role in angiogenesis during muscle hypertrophy. However, the relevance among myonuclei number, capillary supply, and angiogenesis factor is not demonstrated. The Notch effector HeyL is specifically expressed in SCs in the skeletal muscle and is crucial for SC proliferation by inhibiting MyoD in overload-induced muscle hypertrophy. Here, we tested whether the addition of new myonuclei by SC in overloaded muscle is associated with angiogenic adaptation by reanalyzing skeletal muscle from HeyL-knockout (KO) mice, which show blunted responses of SC proliferation, myonucleus addition, and overload-induced muscle hypertrophy. Reanalysis confirmed blunted SC proliferation and myonuclear accretion in the plantaris muscle of HeyL-KO mice 9 wk after synergist ablation. Interestingly, the increase in capillary-to-fiber ratio observed in wild-type (WT) mice was impaired in HeyL-KO mice. In both WT and HeyL-KO mice, the expression of VEGFA and VEGFB was similarly increased in response to overload. In addition, the expression pattern of TSP-1, a negative regulator of angiogenesis, was also not changed between WT and HeyL-KO mice. Collectively, these results suggest that SCs activation-myonuclear accretion plays a crucial role in angiogenesis during overload-induced muscle hypertrophy via independent of angiogenesis regulators.
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Affiliation(s)
- Satoru Ato
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, Japan
- Japan Society for the Promotion of Science, Tokyo, Japan
| | - So-Ichiro Fukada
- Project for Muscle Stem Cell Biology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Japan
| | - Hiroki Kokubo
- Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Riki Ogasawara
- Department of Life Science and Applied Chemistry, Nagoya Institute of Technology, Nagoya, Japan
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6
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Starcher AE, Peissig K, Stanton JB, Churchill GA, Cai D, Maxwell JT, Grider A, Love K, Chen SY, Coleman AE, Strauss E, Pazdro R. A systems approach using Diversity Outbred mice distinguishes the cardiovascular effects and genetics of circulating GDF11 from those of its homolog, myostatin. G3-GENES GENOMES GENETICS 2021; 11:6362884. [PMID: 34510201 PMCID: PMC8527520 DOI: 10.1093/g3journal/jkab293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Accepted: 08/05/2021] [Indexed: 12/02/2022]
Abstract
Growth differentiation factor 11 (GDF11) is a member of the TGF-β protein family that has been implicated in the development of cardiac hypertrophy. While some studies have suggested that systemic GDF11 protects against cardiomyocyte enlargement and left ventricular wall thickening, there remains uncertainty about the true impact of GDF11 and whether its purported effects are actually attributable to its homolog myostatin. This study was conducted to resolve the statistical and genetic relationships among GDF11, myostatin, and cardiac hypertrophy in a mouse model of human genetics, the Diversity Outbred (DO) stock. In the DO population, serum GDF11 concentrations positively correlated with cardiomyocyte cross-sectional area, while circulating myostatin levels were negatively correlated with body weight, heart weight, and left ventricular wall thickness and mass. Genetic analyses revealed that serum GDF11 concentrations are modestly heritable (0.23) and identified a suggestive peak on murine chromosome 3 in close proximity to the gene Hey1, a transcriptional repressor. Bioinformatic analyses located putative binding sites for the HEY1 protein upstream of the Gdf11 gene in the mouse and human genomes. In contrast, serum myostatin concentrations were more heritable (0.57) than GDF11 concentrations, and mapping identified a significant locus near the gene FoxO1, which has binding motifs within the promoter regions of human and mouse myostatin genes. Together, these findings more precisely define the independent cardiovascular effects of GDF11 and myostatin, as well as their distinct regulatory pathways. Hey1 is a compelling candidate for the regulation of GDF11 and will be further evaluated in future studies.
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Affiliation(s)
- Abigail E Starcher
- Department of Nutritional Sciences, University of Georgia, Athens, GA 30602, USA
| | - Kristen Peissig
- Department of Nutritional Sciences, University of Georgia, Athens, GA 30602, USA
| | - James B Stanton
- Department of Pathology, University of Georgia College of Veterinary Medicine, Athens, GA 30602, USA
| | | | - Dunpeng Cai
- Department of Physiology, University of Georgia College of Veterinary Medicine, Athens, GA 30602, USA
| | - Joshua T Maxwell
- Department of Pediatrics, Emory School of Medicine, Atlanta, GA 30322, USA
| | - Arthur Grider
- Department of Nutritional Sciences, University of Georgia, Athens, GA 30602, USA
| | - Kim Love
- K. R. Love Quantitative Consulting and Collaboration, Athens, GA 30605, USA
| | - Shi-You Chen
- Department of Physiology, University of Georgia College of Veterinary Medicine, Athens, GA 30602, USA
| | - Amanda E Coleman
- Department of Small Animal Medicine & Surgery, University of Georgia College of Veterinary Medicine, Athens, GA 30602, USA
| | - Emma Strauss
- Department of Nutritional Sciences, University of Georgia, Athens, GA 30602, USA
| | - Robert Pazdro
- Department of Nutritional Sciences, University of Georgia, Athens, GA 30602, USA
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7
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Varshney A, Chahal G, Santos L, Stolper J, Hallab JC, Nim HT, Nikolov M, Yip A, Ramialison M. Human Cardiac Transcription Factor Networks. SYSTEMS MEDICINE 2021. [DOI: 10.1016/b978-0-12-801238-3.11597-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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8
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Sharipov RN, Kondrakhin YV, Ryabova AS, Yevshin IS, Kolpakov FA. Assessment of transcriptional importance of cell line-specific features based on GTRD and FANTOM5 data. PLoS One 2020; 15:e0243332. [PMID: 33347457 PMCID: PMC7751965 DOI: 10.1371/journal.pone.0243332] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2020] [Accepted: 11/19/2020] [Indexed: 11/18/2022] Open
Abstract
Creating a complete picture of the regulation of transcription seems to be an urgent task of modern biology. Regulation of transcription is a complex process carried out by transcription factors (TFs) and auxiliary proteins. Over the past decade, ChIP-Seq has become the most common experimental technology studying genome-wide interactions between TFs and DNA. We assessed the transcriptional significance of cell line-specific features using regression analysis of ChIP-Seq datasets from the GTRD database and transcriptional start site (TSS) activities from the FANTOM5 expression atlas. For this purpose, we initially generated a large number of features that were defined as the presence or absence of TFs in different promoter regions around TSSs. Using feature selection and regression analysis, we identified sets of the most important TFs that affect expression activity of TSSs in human cell lines such as HepG2, K562 and HEK293. We demonstrated that some TFs can be classified as repressors and activators depending on their location relative to TSS.
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Affiliation(s)
- Ruslan N. Sharipov
- Laboratory of Bioinformatics, Federal Research Center for Information and Computational Technologies, Novosibirsk, Russian Federation
- Specialized Educational Scientific Center, Novosibirsk State University, Novosibirsk, Russian Federation
- BIOSOFT.RU, Ltd, Novosibirsk, Russian Federation
| | - Yury V. Kondrakhin
- Laboratory of Bioinformatics, Federal Research Center for Information and Computational Technologies, Novosibirsk, Russian Federation
- BIOSOFT.RU, Ltd, Novosibirsk, Russian Federation
| | - Anna S. Ryabova
- Laboratory of Bioinformatics, Federal Research Center for Information and Computational Technologies, Novosibirsk, Russian Federation
- BIOSOFT.RU, Ltd, Novosibirsk, Russian Federation
| | - Ivan S. Yevshin
- Laboratory of Bioinformatics, Federal Research Center for Information and Computational Technologies, Novosibirsk, Russian Federation
- BIOSOFT.RU, Ltd, Novosibirsk, Russian Federation
| | - Fedor A. Kolpakov
- Laboratory of Bioinformatics, Federal Research Center for Information and Computational Technologies, Novosibirsk, Russian Federation
- BIOSOFT.RU, Ltd, Novosibirsk, Russian Federation
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9
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Watanabe Y, Seya D, Ihara D, Ishii S, Uemoto T, Kubo A, Arai Y, Isomoto Y, Nakano A, Abe T, Shigeta M, Kawamura T, Saito Y, Ogura T, Nakagawa O. Importance of endothelial Hey1 expression for thoracic great vessel development and its distal enhancer for Notch-dependent endothelial transcription. J Biol Chem 2020; 295:17632-17645. [PMID: 33454003 PMCID: PMC7762959 DOI: 10.1074/jbc.ra120.015003] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Revised: 10/12/2020] [Indexed: 12/19/2022] Open
Abstract
Thoracic great vessels such as the aorta and subclavian arteries are formed through dynamic remodeling of embryonic pharyngeal arch arteries (PAAs). Previous work has shown that loss of a basic helix-loop-helix transcription factor Hey1 in mice causes abnormal fourth PAA development and lethal great vessel anomalies resembling congenital malformations in humans. However, how Hey1 mediates vascular formation remains unclear. In this study, we revealed that Hey1 in vascular endothelial cells, but not in smooth muscle cells, played essential roles for PAA development and great vessel morphogenesis in mouse embryos. Tek-Cre-mediated Hey1 deletion in endothelial cells affected endothelial tube formation and smooth muscle differentiation in embryonic fourth PAAs and resulted in interruption of the aortic arch and other great vessel malformations. Cell specificity and signal responsiveness of Hey1 expression were controlled through multiple cis-regulatory regions. We found two distal genomic regions that had enhancer activity in endothelial cells and in the pharyngeal epithelium and somites, respectively. The novel endothelial enhancer was conserved across species and was specific to large-caliber arteries. Its transcriptional activity was regulated by Notch signaling in vitro and in vivo, but not by ALK1 signaling and other transcription factors implicated in endothelial cell specificity. The distal endothelial enhancer was not essential for basal Hey1 expression in mouse embryos but may likely serve for Notch-dependent transcriptional control in endothelial cells together with the proximal regulatory region. These findings help in understanding the significance and regulation of endothelial Hey1 as a mediator of multiple signaling pathways in embryonic vascular formation.
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Affiliation(s)
- Yusuke Watanabe
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan; Graduate School of Medical Sciences, Nara Medical University, Kashihara, Nara, Japan.
| | - Daiki Seya
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Dai Ihara
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan; Laboratory of Stem Cell and Regenerative Medicine, Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Shuhei Ishii
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan; Graduate School of Medical Sciences, Nara Medical University, Kashihara, Nara, Japan
| | - Taiki Uemoto
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan; Graduate School of Medical Sciences, Nara Medical University, Kashihara, Nara, Japan
| | - Atsushi Kubo
- Department of Developmental Neurobiology, Institute of Development, Aging, and Cancer, Tohoku University, Sendai, Miyagi, Japan
| | - Yuji Arai
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan; Laboratory of Animal Experiment and Medical Management, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Yoshie Isomoto
- Laboratory of Animal Experiment and Medical Management, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Atsushi Nakano
- Laboratory of Animal Experiment and Medical Management, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Takaya Abe
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Mayo Shigeta
- Laboratory for Animal Resources and Genetic Engineering, RIKEN Center for Biosystems Dynamics Research, Kobe, Japan
| | - Teruhisa Kawamura
- Laboratory of Stem Cell and Regenerative Medicine, Department of Biomedical Sciences, College of Life Sciences, Ritsumeikan University, Kusatsu, Shiga, Japan
| | - Yoshihiko Saito
- Graduate School of Medical Sciences, Nara Medical University, Kashihara, Nara, Japan; Department of Cardiovascular Medicine, Nara Medical University, Kashihara, Nara, Japan
| | - Toshihiko Ogura
- Department of Developmental Neurobiology, Institute of Development, Aging, and Cancer, Tohoku University, Sendai, Miyagi, Japan
| | - Osamu Nakagawa
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan; Graduate School of Medical Sciences, Nara Medical University, Kashihara, Nara, Japan.
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10
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Su K, Lin N, Xie S, Han Y, Yang Z, Zhang H, He H, Zhou SA, Ma W, Zhang T, Wang N. DNMT3A inhibits E2F1-induced arterial marker expression and impairs angiogenesis in human umbilical artery endothelial cells. Acta Biochim Biophys Sin (Shanghai) 2020; 52:1236-1246. [PMID: 33079978 DOI: 10.1093/abbs/gmaa109] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 06/05/2020] [Accepted: 08/18/2020] [Indexed: 12/13/2022] Open
Abstract
Arterial marker genes EphrinB2 and HEY2 are essential for cardiovascular development and postnatal neovascularization. Our previous study confirmed that E2F1 could activate the transcription of EphrinB2 and HEY2 in human mesenchymal stem cells; however, the detailed mechanism has not been resolved yet. In this study, we focused on the interaction between E2F1 and DNMT3A, a de novo DNA methyltransferase, on regulating the expression of EphrinB2 and HEY2, and explored the potential mechanisms. Gain- and loss-of-function experiments implicated the positive effect of E2F1 on the expression of EphrinB2 and HEY2 and tube formation in human umbilical artery endothelial cells. Accumulation of DNMT3A decreased the levels of EphrinB2 and HEY2, and impaired tube formation induced by E2F1, while inhibiting DNMT3A by RNA interference augmented their expression and angiogenesis in E2F1-trasfected cells. We then asked whether the low expressions of EphrinB2 and HEY2 induced by DNMT3A are related to the methylation status of their promoters. Surprisingly, the methylation status of the CpG islands in the promoter region was not significantly affected by overexpression of exogenous DNMT3A. Furthermore, the interaction between E2F1 and DNMT3A was confirmed by co-immunoprecipitation. DNMT3A could inhibit the transcription of EphrinB2 and HEY2 promoters by affecting the binding of E2F1 to its recognition sequences as revealed by luciferase reporter assay and chromatin immunoprecipitation. These results identified a novel mechanism underlying the cooperation of DNMT3A with E2F1 on regulating target gene expression, and revealed their roles in the angiogenic process.
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Affiliation(s)
- Kaiyue Su
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
| | - Ningning Lin
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
| | - Shouqiang Xie
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
| | - Yabo Han
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
| | - Zaiming Yang
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
| | - Hongmin Zhang
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
| | - Hongpeng He
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
| | - S a Zhou
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
| | - Wenjian Ma
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
| | - Tongcun Zhang
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
| | - Nan Wang
- College of Biotechnology, Tianjin University of Science and Technology, Tianjin 300457, China
- Key Laboratory of Industrial Fermentation Microbiology, Ministry of Education, Tianjin 300457, China
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11
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Huang G, Zhang G, Yu Z. Computational prediction and analysis of histone H3k27me1-associated miRNAs. BIOCHIMICA ET BIOPHYSICA ACTA-PROTEINS AND PROTEOMICS 2020; 1869:140539. [PMID: 32947024 DOI: 10.1016/j.bbapap.2020.140539] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 06/24/2020] [Revised: 08/29/2020] [Accepted: 09/10/2020] [Indexed: 12/31/2022]
Abstract
The mono-methylation of histone H3 on lysine 27 (H3K27me1) plays key roles in the cellular processes. The H3K27me1 interacts with the DNA sequence of the miRNAs and regulates the transcription of miRNAs. Therefore, biological roles of the H3K27me1 are closely related to the downstream miRNAs. We proposed a machine learning-based computational method to predict H3K27me1-associated miRNAs and obtained AUCs of 0.6866 and 0.6849 on the leave-one-out and five-fold cross validation, respectively. We also performed enrichment analysis of the transcript factors, GO terms and pathways of H3K27me1-associated miRNAs. Among the top 10 significantly enriched transcription factors, five were unfavorable prognostic marker in renal cancer. The enrichment analysis of molecular function showed that the H3K27me1-associated miRNAs were linked to RNA binding and protein binding which were involved in the transcription and translation regulation. The enrichment of pathway showed that H3K27me1-associated miRNAs were mainly involved in pathways related to cancers, signaling and virus.
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Affiliation(s)
- Guohua Huang
- Provincial Key Laboratory of Informational Service for Rural Area of Southwestern Hunan, Shaoyang University, Shaoyang 422000, China.
| | - Guiyang Zhang
- Provincial Key Laboratory of Informational Service for Rural Area of Southwestern Hunan, Shaoyang University, Shaoyang 422000, China
| | - Zuguo Yu
- Key Laboratory of Intelligent Computing and Information Processing of Ministry of Education and Hunan Key Laboratory for Computation and Simulation in Science and Engineering, Xiangtan University, Xiangtan, Hunan 411105, China.
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12
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Notch3 signalling and vascular remodelling in pulmonary arterial hypertension. Clin Sci (Lond) 2020; 133:2481-2498. [PMID: 31868216 PMCID: PMC6928565 DOI: 10.1042/cs20190835] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/27/2019] [Accepted: 12/11/2019] [Indexed: 02/07/2023]
Abstract
Notch signalling is critically involved in vascular morphogenesis and function. Four Notch isoforms (Notch1–4) regulating diverse cellular processes have been identified. Of these, Notch3 is expressed almost exclusively in vascular smooth muscle cells (VSMCs), where it is critically involved in vascular development and differentiation. Under pathological conditions, Notch3 regulates VSMC switching between the contractile and synthetic phenotypes. Abnormal Notch3 signalling plays an important role in vascular remodelling, a hallmark of several cardiovascular diseases, including pulmonary arterial hypertension (PAH). Because of the importance of Notch3 in VSMC (de)differentiation, Notch3 has been implicated in the pathophysiology of pulmonary vascular remodelling in PAH. Here we review the current literature on the role of Notch in VSMC function with a focus on Notch3 signalling in pulmonary artery VSMCs, and discuss potential implications in pulmonary artery remodelling in PAH.
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13
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Fried S, Gilboa D, Har-Zahav A, Lavrut PM, Du Y, Karjoo S, Russo P, Shamir R, Wells RG, Waisbourd-Zinman O. Extrahepatic cholangiocyte obstruction is mediated by decreased glutathione, Wnt and Notch signaling pathways in a toxic model of biliary atresia. Sci Rep 2020; 10:7599. [PMID: 32371929 PMCID: PMC7200694 DOI: 10.1038/s41598-020-64503-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 03/02/2020] [Indexed: 12/13/2022] Open
Abstract
Biliary atresia is a neonatal liver disease with extrahepatic bile duct obstruction and progressive liver fibrosis. The etiology and pathogenesis of the disease are unknown. We previously identified a plant toxin, biliatresone, responsible for biliary atresia in naturally-occurring animal models, that causes cholangiocyte destruction in in-vitro models. Decreases in reduced glutathione (GSH) mimic the effects of biliatresone, and agents that replenish cellular GSH ameliorate the effects of the toxin. The goals of this study were to define signaling pathways downstream of biliatresone that lead to cholangiocyte destruction and to determine their relationship to GSH. Using cholangiocyte culture and 3D cholangiocyte spheroid cultures, we found that biliatresone and decreases in GSH upregulated RhoU/Wrch1, a Wnt signaling family member, which then mediated an increase in Hey2 in the NOTCH signaling pathway, causing downregulation of the transcription factor Sox17. When these genes were up- or down-regulated, the biliatresone effect on spheroids was phenocopied, resulting in lumen obstruction. Biopsies of patients with biliary atresia demonstrated increased RhoU/Wrch1 and Hey2 expression in cholangiocytes. We present a novel pathway of cholangiocyte injury in a model of biliary atresia, which is relevant to human BA and may suggest potential future therapeutics.
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Affiliation(s)
- Sophia Fried
- Institute for Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Dafna Gilboa
- Institute for Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Adi Har-Zahav
- Institute for Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | | | - Yu Du
- Division of Gastroenterology, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
| | - Sara Karjoo
- Johns Hopkins School of Medicine, Baltimore, Maryland, United States
| | - Pierre Russo
- Department of Pathology and Laboratory Medicine, The Children's Hospital of Philadelphia, Philadelphia, PA, United States
| | - Raanan Shamir
- Institute for Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Rebecca G Wells
- Division of Gastroenterology, Department of Medicine, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA, United States
| | - Orith Waisbourd-Zinman
- Institute for Gastroenterology, Nutrition and Liver Diseases, Schneider Children's Medical Center of Israel, Petach Tikva, Israel. .,Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel. .,Division of Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, The Children's Hospital of Philadelphia, Philadelphia, PA, United States.
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14
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Ihara D, Watanabe Y, Seya D, Arai Y, Isomoto Y, Nakano A, Kubo A, Ogura T, Kawamura T, Nakagawa O. Expression of Hey2 transcription factor in the early embryonic ventricles is controlled through a distal enhancer by Tbx20 and Gata transcription factors. Dev Biol 2020; 461:124-131. [DOI: 10.1016/j.ydbio.2020.02.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2019] [Revised: 02/01/2020] [Accepted: 02/01/2020] [Indexed: 02/07/2023]
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15
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Vujovic F, Hunter N, Farahani RM. Notch pathway: a bistable inducer of biological noise? Cell Commun Signal 2019; 17:133. [PMID: 31640734 PMCID: PMC6805690 DOI: 10.1186/s12964-019-0453-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Accepted: 10/04/2019] [Indexed: 12/11/2022] Open
Abstract
Notch signalling pathway is central to development of metazoans. The pathway codes a binary fate switch. Upon activation, downstream signals contribute to resolution of fate dichotomies such as proliferation/differentiation or sub-lineage differentiation outcome. There is, however, an interesting paradox in the Notch signalling pathway. Despite remarkable predictability of fate outcomes instructed by the Notch pathway, the associated transcriptome is versatile and plastic. This inconsistency suggests the presence of an interface that compiles input from the plastic transcriptome of the Notch pathway but communicates only a binary output in biological decisions. Herein, we address the interface that determines fate outcomes. We provide an alternative hypothesis for the Notch pathway as a biological master switch that operates by induction of genetic noise and bistability in order to facilitate resolution of dichotomous fate outcomes in development.
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Affiliation(s)
- Filip Vujovic
- IDR/Westmead Institute for Medical Research, Sydney, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2145 Australia
| | - Neil Hunter
- IDR/Westmead Institute for Medical Research, Sydney, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2145 Australia
| | - Ramin M. Farahani
- IDR/Westmead Institute for Medical Research, Sydney, Australia
- Faculty of Medicine and Health, University of Sydney, Sydney, NSW 2145 Australia
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16
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Wang J, Zhu B, Zhang Y, Saiyin H, Wumaier R, Yu L, Sun L, Xiao Q. HEY2 acting as a co-repressor with smad3 and smad4 interferes with the response of TGF-beta in hepatocellular carcinoma. Am J Transl Res 2019; 11:4367-4381. [PMID: 31396342 PMCID: PMC6684919] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Accepted: 06/03/2019] [Indexed: 06/10/2023]
Abstract
The HEY2 (hairy and enhancer of split-related with YRPW motif 2) is reported to play potential roles in tumorigenesis. However, the underlying mechanism in tumorigenesis is remain elusive. The present study aims to investigate the molecular mechanism of biological function of HEY2 in hepatocellular carcinoma (HCC). Dysfunction of the transforming growth factor-beta (TGF-β) pathway plays a critical role in HCC pathogenesis. Here, we identified HEY2 as a suppressor for TGF-β biological response. We demonstrated that HEY2 protein in tumor cytoplasm was up-regulated in HCC. Further, HEY2 overexpression inhibited TGF-β-induced growth arrest of HCC cells and inhibited TGF-β-induced downregulation of c-Myc, both in mRNA and in protein levels. While knockdown of HEY2, by small interfering RNA, was shown to enhance the TGF-β-mediated biological response of HCC cells. Moreover, HEY2 could form complexes with Smad3 and Smad4 and repress Smad3/Smad4 transcriptional activity. In conclusion, our findings indicate a novel role of HEY2 in mediating the TGF-β/Smad signaling pathway in HCC tumorigenesis.
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Affiliation(s)
- Jianqing Wang
- Department of Preventive Medicine, Key Laboratory of Public Health Safety of The Ministry of Education, School of Public Health, Fudan University138 Yixueyuan Rd, Shanghai 200032, China
| | - Bo Zhu
- Department of Preventive Medicine, Key Laboratory of Public Health Safety of The Ministry of Education, School of Public Health, Fudan University138 Yixueyuan Rd, Shanghai 200032, China
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan UniversityShanghai, China
| | - Yuanyuan Zhang
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan UniversityShanghai, China
| | - Hexige Saiyin
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan UniversityShanghai, China
| | - Reziya Wumaier
- Department of Preventive Medicine, Key Laboratory of Public Health Safety of The Ministry of Education, School of Public Health, Fudan University138 Yixueyuan Rd, Shanghai 200032, China
| | - Long Yu
- State Key Laboratory of Genetic Engineering, Collaborative Innovation Center for Genetics and Development, School of Life Sciences, Fudan UniversityShanghai, China
| | - Lichun Sun
- Department of Medicine, School of Medicine, Tulane Health Sciences CenterNew Orleans, LA 70112-2699, USA
| | - Qianyi Xiao
- Department of Preventive Medicine, Key Laboratory of Public Health Safety of The Ministry of Education, School of Public Health, Fudan University138 Yixueyuan Rd, Shanghai 200032, China
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17
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Transcriptomics of cardiac biopsies reveals differences in patients with or without diagnostic parameters for heart failure with preserved ejection fraction. Sci Rep 2019; 9:3179. [PMID: 30816197 PMCID: PMC6395693 DOI: 10.1038/s41598-019-39445-2] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2018] [Accepted: 01/25/2019] [Indexed: 12/14/2022] Open
Abstract
Heart failure affects 2–3% of adult Western population. Prevalence of heart failure with preserved left ventricular (LV) ejection fraction (HFpEF) increases. Studies suggest HFpEF patients to have altered myocardial structure and functional changes such as incomplete relaxation and increased cardiac stiffness. We hypothesised that patients undergoing elective coronary bypass surgery (CABG) with HFpEF characteristics would show distinctive gene expression compared to patients with normal LV physiology. Myocardial biopsies for mRNA expression analysis were obtained from sixteen patients with LV ejection fraction ≥45%. Five out of 16 patients (31%) had echocardiographic characteristics and increased NTproBNP levels indicative of HFpEF and this group was used as HFpEF proxy, while 11 patients had Normal LV physiology. Utilising principal component analysis, the gene expression data clustered into two groups, corresponding to HFpEF proxy and Normal physiology, and 743 differentially expressed genes were identified. The associated top biological functions were cardiac muscle contraction, oxidative phosphorylation, cellular remodelling and matrix organisation. Our results also indicate that upstream regulatory events, including inhibition of transcription factors STAT4, SRF and TP53, and activation of transcription repressors HEY2 and KDM5A, could provide explanatory mechanisms to observed gene expression differences and ultimately cardiac dysfunction in the HFpEF proxy group.
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18
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Noguchi YT, Nakamura M, Hino N, Nogami J, Tsuji S, Sato T, Zhang L, Tsujikawa K, Tanaka T, Izawa K, Okada Y, Doi T, Kokubo H, Harada A, Uezumi A, Gessler M, Ohkawa Y, Fukada SI. Cell-autonomous and redundant roles of Hey1 and HeyL in muscle stem cells: HeyL requires Hes1 to bind diverse DNA sites. Development 2019; 146:dev.163618. [DOI: 10.1242/dev.163618] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2018] [Accepted: 01/31/2019] [Indexed: 12/20/2022]
Abstract
The undifferentiated state of muscle stem (satellite) cells (MuSCs) is maintained by the canonical Notch pathway. Although three bHLH transcriptional factors, Hey1, HeyL, and Hes1, are considered to be potential effectors of the Notch pathway exerting anti-myogenic effects, neither HeyL nor Hes1 inhibits myogenic differentiation of myogenic cell lines. Furthermore, whether these factors work redundantly or cooperatively is unknown. Here, we showed cell-autonomous functions of Hey1 and HeyL in MuSCs using conditional and genetic null mice. Analysis of cultured MuSCs revealed anti-myogenic activity of both HeyL and Hes1. We found that HeyL forms heterodimeric complexes with Hes1 in living cells. Moreover, our ChIP-Seq experiments demonstrated that, compared with HeyL alone, HeyL-Hes1 heterodimer bound with high affinity to specific sites in the chromatin including the cis-element of Hey1. Finally, the analyses of myogenin promoter activity showed that HeyL and Hes1 acted synergistically to suppress myogenic differentiation. Collectively, those results suggest that HeyL and Hey1 function redundantly in MuSCs, and that HeyL requires Hes1 for effective DNA binding and biological activity.
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Affiliation(s)
- Yu-taro Noguchi
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Miki Nakamura
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Nobumasa Hino
- Laboratory of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Jumpei Nogami
- Division of Transcriptomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Sayaka Tsuji
- Laboratory of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takahiko Sato
- Department of Ophthalmology, Kyoto Prefectural University of Medicine, Kyoto 602-8566, Japan
| | - Lidan Zhang
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kazutake Tsujikawa
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Toru Tanaka
- Laboratory of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Kohei Izawa
- Laboratory of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Yoshiaki Okada
- Laboratory of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Takefumi Doi
- Laboratory of Molecular Medicine, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
| | - Hiroki Kokubo
- Department of Cardiovascular Physiology and Medicine, Graduate School of Biomedical and Health Sciences, Hiroshima University, 1-2-3 Kasumi, Minamiku, Hiroshima 734-8551, Japan
| | - Akihito Harada
- Division of Transcriptomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - Akiyoshi Uezumi
- Department of Geriatric Medicine, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Tokyo 173-0015, Japan
| | - Manfred Gessler
- Developmental Biochemistry, Theodor-Boveri-Institute / Biocenter, and Comprehensive Cancer Center Mainfranken, University of Wuerzburg, 97074 Wuerzburg, Germany
| | - Yasuyuki Ohkawa
- Division of Transcriptomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka 812-8582, Japan
| | - So-ichiro Fukada
- Laboratory of Molecular and Cellular Physiology, Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamadaoka, Suita, Osaka 565-0871, Japan
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19
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Singrang N, Kittisenachai S, Roytrakul S, Svasti J, Kangsamaksin T. NOTCH1 regulates the viability of cholangiocarcinoma cells via 14-3-3 theta. J Cell Commun Signal 2018; 13:245-254. [PMID: 30264361 DOI: 10.1007/s12079-018-0488-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Accepted: 09/12/2018] [Indexed: 12/20/2022] Open
Abstract
Notch signaling has been reported to correlate with tumor progression and metastasis in several types of cancer. In cholangiocarcinoma (CCA), it has recently been shown that NOTCH1 is overexpressed in both nucleus and cytoplasm of CCA cells; however, the complete understanding of Notch signaling in CCA is still lacking. Here, we aimed to understand the functions of NOTCH1 in CCA cells and the molecular mechanisms that underlie those functions. We used retroviral vectors to overexpress active forms of NOTCH1, the NOTCH1 intracellular domain (N1ICD) and N1ICD that lacks the RBP-J-associated module (RAM), in human CCA cell lines RMCCA-1 and HuCCA-1. Our results showed that activation of Notch signaling by both N1ICD variants enhanced CCA cell proliferation and survival via upregulation of pro-survival protein Mcl-1 and Bcl-xL. Moreover, our LC-MS/MS proteomic studies demonstrated that NOTCH1 may cooperate with 14-3-3 theta to promote CCA cell survival. Knockdown of 14-3-3 theta in RMCCA-1 cells overexpressing N1ICD, diminished pro-survival effects of N1ICD under gemcitabine treatment. In conclusion, these data demonstrated that NOTCH1 plays a role in CCA cell proliferation and survival via the regulation of 14-3-3 theta in a RAM-independent fashion.
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Affiliation(s)
- Nongnuch Singrang
- Graduate Programme in Molecular Medicine, Faculty of Science, Mahidol University, Bangkok, 10400, Thailand
| | - Suthathip Kittisenachai
- Proteomics Research Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), Thailand Science Park, Khlong Luang, Pathum Thani, 12110, Thailand
| | - Sittiruk Roytrakul
- Proteomics Research Laboratory, National Center for Genetic Engineering and Biotechnology (BIOTEC), Thailand Science Park, Khlong Luang, Pathum Thani, 12110, Thailand
| | - Jisnuson Svasti
- Laboratory of Biochemistry, Chulabhorn Research Institute, Bangkok, 10210, Thailand.,Department of Biochemistry, Faculty of Science, Mahidol University, 272 Rama VI Road, Ratchathewi, Bangkok, 10400, Thailand
| | - Thaned Kangsamaksin
- Department of Biochemistry, Faculty of Science, Mahidol University, 272 Rama VI Road, Ratchathewi, Bangkok, 10400, Thailand.
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20
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Serum/glucocorticoid-regulated kinase 1 as a novel transcriptional target of bone morphogenetic protein-ALK1 receptor signaling in vascular endothelial cells. Angiogenesis 2018; 21:415-423. [DOI: 10.1007/s10456-018-9605-x] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2017] [Accepted: 02/16/2018] [Indexed: 12/11/2022]
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21
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Gaetani P, Hulleman E, Levi D, Quarto M, Scorsetti M, Helin K, Simonelli M, Colombo P, Baena RRY. Expression of the Transcription Factor HEY1 in Glioblastoma: A Preliminary Clinical Study. TUMORI JOURNAL 2018; 96:97-102. [DOI: 10.1177/030089161009600116] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Aims and background The hairy/enhancer of split (E(spl))-related family of transcription factors (HES and HEY) are established targets of the notch signaling pathway, which has been implicated in different developmental processes, tumor formation and the self-renewal of neural stem cells. We determined the expression of HEY1 in human malignant gliomas to investigate whether its expression might be related to prognosis. Methods The expression of HEY1 was studied by in situ hybridization on 62 cases of glioblastoma. Patients were treated with surgery followed by chemotherapy and radiotherapy. We considered as end points of the study the overall survival time and progression-free interval. Correlations between HEY1 expression and tumor grade/patient overall survival and free interval before recurrence were analyzed using univariate analysis. Results Based on the in situ hybridization results, HEY1 expression rate was reported as negative staining in 13 cases (20.6%), as weak staining in 11 cases (17.3%), as moderate staining in 21 cases (33.3%), and as strong staining in 17 cases. We considered in the analysis the cumulative expression of HEY1 at in situ hybridization (Hey Index) as negative in 13 cases and positive in 49 cases (77.78%). The overall survival (P = 0.002) and the free-interval (P = 0.012) were significantly longer in patients who were negative for HEY1 expression. Conclusions Our data suggest that expression of HEY1 might be used as a marker to distinguish glioblastoma patients with a relatively good prognosis from those at high-risk, and that, in the future, HEY1 might represent a therapeutic target.
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Affiliation(s)
- Paolo Gaetani
- Department of Neurosurgery, IRCCS Istituto Clinico Humanitas, Rozzano (MI), Italy
| | | | - Daniel Levi
- Department of Neurosurgery, IRCCS Istituto Clinico Humanitas, Rozzano (MI), Italy
| | | | - Marta Scorsetti
- Department of Radiotherapy, IRCCS Istituto Clinico Humanitas, Rozzano (MI), Italy
| | - Kristian Helin
- Biotech Research and Innovation Centre and Centre for Epigenetics, University of Copenhagen, Copenhagen, Denmark
| | - Matteo Simonelli
- Department of Oncology, IRCCS Istituto Clinico Humanitas, Rozzano (MI), Italy
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22
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Hey1 and Hey2 are differently expressed during mouse tooth development. Gene Expr Patterns 2018; 27:99-105. [DOI: 10.1016/j.gep.2017.11.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2017] [Revised: 11/15/2017] [Accepted: 11/15/2017] [Indexed: 11/20/2022]
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23
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Hu B, Huo Y, Yang L, Chen G, Luo M, Yang J, Zhou J. ZIKV infection effects changes in gene splicing, isoform composition and lncRNA expression in human neural progenitor cells. Virol J 2017; 14:217. [PMID: 29116029 PMCID: PMC5688814 DOI: 10.1186/s12985-017-0882-6] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2017] [Accepted: 10/30/2017] [Indexed: 01/21/2023] Open
Abstract
BACKGROUND The Zika virus (ZIKV) is a mosquito-borne flavivirus that causes microcephaly and Guillain-Barré syndrome in infected individuals. To obtain insights into the mechanism of ZIKV infection and pathogenesis, we analyzed the transcriptome of ZIKV infected human neural progenitor cells (hNPCs) for changes in alternative splicing (AS), gene isoform (ISO) composition and long noncoding RNAs (lncRNAs) expression. METHODS We analyzed differentially expressed lncRNAs, AS, ISO from RNA-seq data in ZIKV infected hNPCs. RESULTS We obtained 149 differentially expressed lncRNAs, including potential viral targets to modulate cellular processes such as cell cycle, apoptosis and immune response. The infection induced 262 cases of AS occurring in 229 genes, which were enriched in cell death, RNA processing, transport, and neuron development. Among 691 differentially expressed ISOs, upregulated ISOs were enriched in signaling, regulation of transcription, and amino acid biosynthesis, while downregulated ISOs were mostly enriched in cell cycle. Importantly, these analyses revealed specific links between ZIKV induced changes in cellular pathways and the type of changes in the host transcriptome, suggesting important regulatory mechanisms. CONCLUSIONS Our analyses revealed candidate lncRNAs, AS events and ISOs which may function in ZIKV infection induced cell cycle disruption, apoptosis and attenuation of neurogenesis, and shed light on the roles of lncRNAs, AS and ISOs in virus-host interactions, and would facilitate future studies of ZIKV infection and pathogenesis.
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Affiliation(s)
- Benxia Hu
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, China.,Kunming College of Life Science, University of Chinese Academy of Sciences, Kunming, 650204, China
| | - Yongxia Huo
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, China
| | - Liping Yang
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, China
| | - Guijun Chen
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, China
| | - Minhua Luo
- State Key Laboratory of Virology, CAS Center for Excellence in Brain Science and Intelligence Technology (CEBSIT), Wuhan Institute of Virology, Wuhan, 430071, China
| | - Jinlong Yang
- BGI-Yunnan, BGI-Shenzhen, Kunming, 650000, China.,College of Life Sciences, Yunnan University, Kunming, 650091, China
| | - Jumin Zhou
- Key Laboratory of Animal Models and Human Disease Mechanisms of the Chinese Academy of Sciences/Key Laboratory of Bioactive Peptides of Yunnan Province, Kunming Institute of Zoology, Kunming, 650223, China.
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24
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Borghetti G, Eisenberg CA, Signore S, Sorrentino A, Kaur K, Andrade-Vicenty A, Edwards JG, Nerkar M, Qanud K, Sun D, Goichberg P, Leri A, Anversa P, Eisenberg LM, Jacobson JT, Hintze TH, Rota M. Notch signaling modulates the electrical behavior of cardiomyocytes. Am J Physiol Heart Circ Physiol 2017; 314:H68-H81. [PMID: 28939651 DOI: 10.1152/ajpheart.00587.2016] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Notch receptor signaling is active during cardiac development and silenced in myocytes after birth. Conversely, outward K+ Kv currents progressively appear in postnatal myocytes leading to shortening of the action potential (AP) and acquisition of the mature electrical phenotype. In the present study, we tested the possibility that Notch signaling modulates the electrical behavior of cardiomyocytes by interfering with Kv currents. For this purpose, the effects of Notch receptor activity on electrophysiological properties of myocytes were evaluated using transgenic mice with inducible expression of the Notch1 intracellular domain (NICD), the functional fragment of the activated Notch receptor, and in neonatal myocytes after inhibition of the Notch transduction pathway. By patch clamp, NICD-overexpressing cells presented prolonged AP duration and reduced upstroke amplitude, properties that were coupled with reduced rapidly activating Kv and fast Na+ currents, compared with cells obtained from wild-type mice. In cultured neonatal myocytes, inhibition of the proteolitic release of NICD with a γ-secretase antagonist increased transcript levels of the Kv channel-interacting proteins 2 (KChIP2) and enhanced the density of Kv currents. Collectively, these results indicate that Notch signaling represents an important regulator of the electrophysiological behavior of developing and adult myocytes by repressing, at least in part, repolarizing Kv currents. NEW & NOTEWORTHY We investigated the effects of Notch receptor signaling on the electrical properties of cardiomyocytes. Our results indicate that the Notch transduction pathway interferes with outward K+ Kv currents, critical determinants of the electrical repolarization of myocytes.
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Affiliation(s)
- Giulia Borghetti
- Departments of Anesthesia and Medicine, and Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts
| | - Carol A Eisenberg
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Sergio Signore
- Departments of Anesthesia and Medicine, and Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts
| | - Andrea Sorrentino
- Departments of Anesthesia and Medicine, and Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts
| | - Keerat Kaur
- Department of Physiology, New York Medical College, Valhalla, New York
| | | | - John G Edwards
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Mriganka Nerkar
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Khaled Qanud
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Dong Sun
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Polina Goichberg
- Departments of Anesthesia and Medicine, and Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts
| | - Annarosa Leri
- Departments of Anesthesia and Medicine, and Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts
| | - Piero Anversa
- Departments of Anesthesia and Medicine, and Division of Cardiovascular Medicine, Brigham and Women's Hospital, Harvard Medical School , Boston, Massachusetts
| | | | - Jason T Jacobson
- Department of Physiology, New York Medical College, Valhalla, New York.,Department of Cardiology, Westchester Medical Center, Valhalla, New York
| | - Thomas H Hintze
- Department of Physiology, New York Medical College, Valhalla, New York
| | - Marcello Rota
- Department of Physiology, New York Medical College, Valhalla, New York
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25
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Ye L, Li X, Li L, Chen H, Ge RS. Insights into the Development of the Adult Leydig Cell Lineage from Stem Leydig Cells. Front Physiol 2017; 8:430. [PMID: 28701961 PMCID: PMC5487449 DOI: 10.3389/fphys.2017.00430] [Citation(s) in RCA: 158] [Impact Index Per Article: 22.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 06/06/2017] [Indexed: 02/06/2023] Open
Abstract
Adult Leydig cells (ALCs) are the steroidogenic cells in the testes that produce testosterone. ALCs develop postnatally from a pool of stem cells, referred to as stem Leydig cells (SLCs). SLCs are spindle-shaped cells that lack steroidogenic cell markers, including luteinizing hormone (LH) receptor and 3β-hydroxysteroid dehydrogenase. The commitment of SLCs into the progenitor Leydig cells (PLCs), the first stage in the lineage, requires growth factors, including Dessert Hedgehog (DHH) and platelet-derived growth factor-AA. PLCs are still spindle-shaped, but become steroidogenic and produce mainly androsterone. The next transition in the lineage is from PLC to the immature Leydig cell (ILC). This transition requires LH, DHH, and androgen. ILCs are ovoid cells that are competent for producing a different form of androgen, androstanediol. The final stage in the developmental lineage is ALC. The transition to ALC involves the reduced expression of 5α-reductase 1, a step that is necessary to make the cells to produce testosterone as the final product. The transitions along the Leydig cell lineage are associated with the progressive down-regulation of the proliferative activity, and the up-regulation of steroidogenic capacity, with each step requiring unique regulatory signaling.
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Affiliation(s)
- Leping Ye
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhou, China
| | - Xiaoheng Li
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhou, China
| | - Linxi Li
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhou, China
| | - Haolin Chen
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhou, China
| | - Ren-Shan Ge
- The Second Affiliated Hospital and Yuying Children's Hospital of Wenzhou Medical UniversityWenzhou, China
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26
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Sathiyanathan P, Tay CY, Stanton LW. Transcriptome analysis for the identification of cellular markers related to trabecular meshwork differentiation. BMC Genomics 2017; 18:383. [PMID: 28514956 PMCID: PMC5436446 DOI: 10.1186/s12864-017-3758-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 05/03/2017] [Indexed: 12/20/2022] Open
Abstract
Background Development of primary open-angle glaucoma (POAG) is associated with the malfunctioning trabecular meshwork (TM). Cell therapy offers great potential for the treatment of POAG, but requires the generation of functional TM cells in vitro to replace the lost/dysfunctional cells. TM differentiation in vitro from various stem cell types must be monitored by the expression of specific markers. However, no single definitive marker of the TM has been identified. Results To identify robust markers of TM differentiation, we performed global transcriptome profiling using high-density oligonucleotide microarray on ex vivo TM tissue and cultured TM progenitors. Corneal and scleral tissues were also used in the analysis. After removal of genes expressed in the cornea and sclera, 18 genes were identified that were differentially expressed in the TM relative to the other samples. CDH23, F5, KCNAB1, FGF9, SPP1, and HEY1 were selected among the genes highly expressed in the TM, together with BDNF which was repressed, compared to progenitors for further investigation. Expression analysis by qPCR verified the differential expression and immunofluorescence of the anterior segment confirmed strong expression in the TM. Conclusions Three independent cohort of expression studies have identified novel markers, fitting in identifying TM cells and in evaluating directed TM differentiation in vitro. Electronic supplementary material The online version of this article (doi:10.1186/s12864-017-3758-7) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Padmapriya Sathiyanathan
- Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore.,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore
| | - Cheryl Y Tay
- Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore
| | - Lawrence W Stanton
- Genome Institute of Singapore, Agency for Science, Technology and Research (A*STAR), Singapore, Singapore. .,School of Biological Sciences, Nanyang Technological University, Singapore, Singapore. .,Department of Biological Sciences, National University of Singapore, Singapore, Singapore.
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27
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Liu Z, Sanders AJ, Liang G, Song E, Jiang WG, Gong C. Hey Factors at the Crossroad of Tumorigenesis and Clinical Therapeutic Modulation of Hey for Anticancer Treatment. Mol Cancer Ther 2017; 16:775-786. [PMID: 28468863 DOI: 10.1158/1535-7163.mct-16-0576] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2016] [Revised: 12/29/2016] [Accepted: 12/29/2016] [Indexed: 11/16/2022]
Affiliation(s)
- Zihao Liu
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Andrew J Sanders
- Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Cardiff University, Heath Park, Cardiff, United Kingdom
| | - Gehao Liang
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Erwei Song
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China
| | - Wen G Jiang
- Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Cardiff University, Heath Park, Cardiff, United Kingdom.
| | - Chang Gong
- Guangdong Provincial Key Laboratory of Malignant Tumor Epigenetic and Gene Regulation, Breast Tumor Center, Sun Yat-sen Memorial Hospital, Sun Yat-sen University, Guangzhou, China.
- Cardiff China Medical Research Collaborative, Cardiff University School of Medicine, Cardiff University, Heath Park, Cardiff, United Kingdom
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28
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2,3,5,4'-Tetrahydroxystilbene-2-O-β-D-glucoside protects murine hearts against ischemia/reperfusion injury by activating Notch1/Hes1 signaling and attenuating endoplasmic reticulum stress. Acta Pharmacol Sin 2017; 38:317-330. [PMID: 28112174 DOI: 10.1038/aps.2016.144] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2016] [Accepted: 11/07/2016] [Indexed: 12/11/2022] Open
Abstract
2,3,5,4'-Tetrahydroxystilbene-2-O-β-D-glucoside (TSG) is a water-soluble active component extracted from Polygonum multiflorum Thunb. A number of studies demonstrate that TSG exerts cardioprotective effects. Since endoplasmic reticulum (ER) stress plays a key role in myocardial ischemia/reperfusion (MI/R)-induced cell apoptosis, we sought to determine whether modulation of the ER stress during MI/R injury was involved in the cardioprotective action of TSG. Male mice were treated with TSG (60 mg·kg-1·d-1, ig) for 2 weeks and then were subjected to MI/R surgery. Pre-administration of TSG significantly improved post-operative cardiac function, and suppressed MI/R-induced myocardial apoptosis, evidenced by the reduction in the myocardial apoptotic index, serum levels of LDH and CK after 6 h of reperfusion. TSG (0.1-1000 μmol/L) did not affect the viability of cultured H9c2 cardiomyoblasts in vitro, but pretreatment with TSG dose-dependently decreased simulated ischemia/reperfusion (SIR)-induced cell apoptosis. Furthermore, both in vivo and in vitro studies revealed that TSG treatment activated the Notch1/Hes1 signaling pathway and suppressed ER stress, as evidenced by increasing Notch1, Notch1 intracellular domain (NICD), Hes1, and Bcl-2 expression levels and by decreasing p-PERK/PERK ratio, p-eIF2α/eIF2α ratio, and ATF4, CHOP, Bax, and caspase-3 expression levels. Moreover, the protective effects conferred by TSG on SIR-treated H9c2 cardiomyoblasts were abolished by co-administration of DAPT (the Notch1 signaling inhibitor). In summary, TSG ameliorates MI/R injury in vivo and in vitro by activating the Notch1/Hes1 signaling pathway and attenuating ER stress-induced apoptosis.
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29
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Khandekar A, Springer S, Wang W, Hicks S, Weinheimer C, Diaz-Trelles R, Nerbonne JM, Rentschler S. Notch-Mediated Epigenetic Regulation of Voltage-Gated Potassium Currents. Circ Res 2016; 119:1324-1338. [PMID: 27697822 DOI: 10.1161/circresaha.116.309877] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/02/2016] [Revised: 09/27/2016] [Accepted: 09/30/2016] [Indexed: 12/19/2022]
Abstract
RATIONALE Ventricular arrhythmias often arise from the Purkinje-myocyte junction and are a leading cause of sudden cardiac death. Notch activation reprograms cardiac myocytes to an induced Purkinje-like state characterized by prolonged action potential duration and expression of Purkinje-enriched genes. OBJECTIVE To understand the mechanism by which canonical Notch signaling causes action potential prolongation. METHODS AND RESULTS We find that endogenous Purkinje cells have reduced peak K+ current, Ito, and IK,slow when compared with ventricular myocytes. Consistent with partial reprogramming toward a Purkinje-like phenotype, Notch activation decreases peak outward K+ current density, as well as the outward K+ current components Ito,f and IK,slow. Gene expression studies in Notch-activated ventricles demonstrate upregulation of Purkinje-enriched genes Contactin-2 and Scn5a and downregulation of K+ channel subunit genes that contribute to Ito,f and IK,slow. In contrast, inactivation of Notch signaling results in increased cell size commensurate with increased K+ current amplitudes and mimics physiological hypertrophy. Notch-induced changes in K+ current density are regulated at least in part via transcriptional changes. Chromatin immunoprecipitation demonstrates dynamic RBP-J (recombination signal binding protein for immunoglobulin kappa J region) binding and loss of active histone marks on K+ channel subunit promoters with Notch activation, and similar transcriptional and epigenetic changes occur in a heart failure model. Interestingly, there is a differential response in Notch target gene expression and cellular electrophysiology in left versus right ventricular cardiac myocytes. CONCLUSIONS In summary, these findings demonstrate a novel mechanism for regulation of voltage-gated potassium currents in the setting of cardiac pathology and may provide a novel target for arrhythmia drug design.
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Affiliation(s)
- Aditi Khandekar
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Steven Springer
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Wei Wang
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Stephanie Hicks
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Carla Weinheimer
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | | | - Jeanne M Nerbonne
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, MO, 63110, USA.,Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, 63110, USA
| | - Stacey Rentschler
- Department of Medicine, Cardiovascular Division, Washington University School of Medicine, St. Louis, MO, 63110, USA.,Department of Developmental Biology, Washington University School of Medicine, St. Louis, MO, 63110, USA
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30
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Baeten JT, Lilly B. Notch Signaling in Vascular Smooth Muscle Cells. ADVANCES IN PHARMACOLOGY 2016; 78:351-382. [PMID: 28212801 DOI: 10.1016/bs.apha.2016.07.002] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
The Notch signaling pathway is a highly conserved pathway involved in cell fate determination in embryonic development and also functions in the regulation of physiological processes in several systems. It plays an especially important role in vascular development and physiology by influencing angiogenesis, vessel patterning, arterial/venous specification, and vascular smooth muscle biology. Aberrant or dysregulated Notch signaling is the cause of or a contributing factor to many vascular disorders, including inherited vascular diseases, such as cerebral autosomal dominant arteriopathy with subcortical infarcts and leukoencephalopathy, associated with degeneration of the smooth muscle layer in cerebral arteries. Like most signaling pathways, the Notch signaling axis is influenced by complex interactions with mediators of other signaling pathways. This complexity is also compounded by different members of the Notch family having both overlapping and unique functions. Thus, it is vital to fully understand the roles and interactions of each Notch family member in order to effectively and specifically target their exact contributions to vascular disease. In this chapter, we will review the Notch signaling pathway in vascular smooth muscle cells as it relates to vascular development and human disease.
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Affiliation(s)
- J T Baeten
- The Center for Cardiovascular Research and The Heart Center at Nationwide Children's Hospital, The Ohio State University, Columbus, OH, United States
| | - B Lilly
- The Center for Cardiovascular Research and The Heart Center at Nationwide Children's Hospital, The Ohio State University, Columbus, OH, United States.
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31
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Hirano K, Namihira M. LSD1 Mediates Neuronal Differentiation of Human Fetal Neural Stem Cells by Controlling the Expression of a Novel Target Gene,HEYL. Stem Cells 2016; 34:1872-82. [DOI: 10.1002/stem.2362] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2015] [Revised: 02/03/2016] [Accepted: 02/28/2016] [Indexed: 01/23/2023]
Affiliation(s)
- Kazumi Hirano
- Molecular Neurophysiology Research Group, Biomedical Research Institute, The National Institute of Advanced Industrial Science and Technology (AIST); Japan
| | - Masakazu Namihira
- Molecular Neurophysiology Research Group, Biomedical Research Institute, The National Institute of Advanced Industrial Science and Technology (AIST); Japan
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32
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Kong R, Feng J, Ma Y, Zhou B, Li S, Zhang W, Jiang J, Zhang J, Qiao Z, Zhang T, Zang Q, He X. Silencing NACK by siRNA inhibits tumorigenesis in non-small cell lung cancer via targeting Notch1 signaling pathway. Oncol Rep 2016; 35:2306-14. [PMID: 26782286 DOI: 10.3892/or.2016.4552] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2015] [Accepted: 12/08/2015] [Indexed: 11/06/2022] Open
Abstract
Non-small cell lung cancer (NSCLC) is the most common type of lung tumor with poor prognosis, in which the Notch signaling pathway plays an important role. Notch activation complex kinase (NACK) has been reported both as a co-activator and a target gene of the Notch pathway. However, the molecular mechanism of NACK in NSCLC still remains unknown. In this study, the expression of NACK was analyzed in 35 paired NSCLC tumor samples and 2 NSCLC cell lines. MTT assay, cell migration assay, cell invasion assay, flow cytometry assay, and xenograft model were employed to detect the effect of NACK knockdown on the cell proliferation, metastasis, invasion and apoptosis of NSCLC. The relationship between NACK and Notch1 signaling pathway in NSCLC cells was assessed by western blot and luciferase reporter assay. We found that the expression of NACK in the NSCLC tissues and lung cancer cells were significantly increased. High level of NACK expression is remarkable associated with tumor differentiation, lymphatic metastasis, clinical stage and poor survival prognosis. The interference of NACK significantly inhibited cell proliferation, invasion and metastasis through inducing apoptosis in NSCLC cells. The transcriptional activity of related Notch1 target genes were significantly suppressed resulting from NACK knockdown. This study demonstrates that interference of NACK inhibits NSCLC progression through Notch1 signaling pathway and targeting NACK may be an effective approach for NSCLC therapy.
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Affiliation(s)
- Ranran Kong
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Jie Feng
- Department of Nephrology, The First Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710061, P.R. China
| | - Yuefeng Ma
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Bin Zhou
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Shaomin Li
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Wei Zhang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Jiantao Jiang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Jin Zhang
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Zhe Qiao
- Department of Thoracic Surgery, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Ting Zhang
- Second Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Quanjin Zang
- Second Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
| | - Xijing He
- Second Department of Orthopedics, The Second Affiliated Hospital of Xi'an Jiaotong University, Xi'an, Shaanxi 710004, P.R. China
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33
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Basu S, Proweller A. Autoregulatory Control of Smooth Muscle Myosin Light Chain Kinase Promoter by Notch Signaling. J Biol Chem 2015; 291:2988-99. [PMID: 26703474 DOI: 10.1074/jbc.m115.679803] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2015] [Indexed: 11/06/2022] Open
Abstract
Smooth muscle myosin light chain kinase (SM-MLCK) is the key enzyme responsible for phosphorylation of regulatory myosin light chain (MLC20), resulting in actin-myosin cross-bridging and force generation in vascular smooth muscle required for physiological vasoreactivity and blood pressure control. In this study, we investigated the combinatorial role of myocardin/serum response factor (SRF) and Notch signaling in the transcriptional regulation of MLCK gene expression. Promoter reporter analyses in rat A10 smooth muscle cells revealed a bimodal pattern of MLCK promoter activity and gene expression upon stimulation with constitutively active Notch1 in presence of myocardin or by Jagged1 ligand stimulation. An initial Notch1-induced increase in MLCK transcription was followed by loss in promoter sensitivity, which could be restored with further Notch1 dose escalation. Real-time PCR analyses revealed that endogenous levels of Hairy Related Transcription (HRT) factor 2 (HRT2) peaked concurrently with inhibitory concentrations of Notch1. Forced expression of HRT2 demonstrated simultaneous repression of both myocardin- and Notch1-induced MLCK promoter activity. HRT2-mediated repression was further confirmed by HRT2 truncations and siHRT2 treatments that rescued MLCK promoter activity and gene expression. Chromatin immunoprecipitation studies revealed both Jagged1 ligand- and Notch1-enhanced myocardin/SRF complex formation at the promoter CArG element. In contrast, heightened levels of HRT2 concomitantly disrupted myocardin/SRF and Notch transcription complex formation at respective CArG and CSL binding elements. Taken together, SM-MLCK promoter activity appears highly sensitive to the relative levels of Notch1 signaling, HRT2, and myocardin. These findings identify a novel Notch-dependent HRT2 autoregulatory circuit coordinating transcriptional regulation of SM-MLCK.
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Affiliation(s)
- Sanchita Basu
- From the Department of Medicine, Case Cardiovascular Research Institute and University Hospitals Harrington Heart and Vascular Institute, Case Western Reserve University, Cleveland, Ohio 44106
| | - Aaron Proweller
- From the Department of Medicine, Case Cardiovascular Research Institute and University Hospitals Harrington Heart and Vascular Institute, Case Western Reserve University, Cleveland, Ohio 44106
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34
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Fujita M, Sakabe M, Ioka T, Watanabe Y, Kinugasa-Katayama Y, Tsuchihashi T, Utset MF, Yamagishi H, Nakagawa O. Pharyngeal arch artery defects and lethal malformations of the aortic arch and its branches in mice deficient for the Hrt1/Hey1 transcription factor. Mech Dev 2015; 139:65-73. [PMID: 26577899 DOI: 10.1016/j.mod.2015.11.002] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2015] [Accepted: 11/09/2015] [Indexed: 11/26/2022]
Abstract
The aortic arch and major branch arteries are formed from the three pairs of pharyngeal arch arteries (PAAs) during embryonic development. Their morphological defects are clinically observed as isolated diseases, as a part of complicated cardiovascular anomalies or as a manifestation of multi-organ syndromes such as 22q11.2 deletion syndrome. Although numerous genes have been implicated in PAA formation and remodeling, detailed mechanisms remain poorly understood. Here we report that the mice null for Hrt1/Hey1, a gene encoding a downstream transcription factor of Notch and ALK1 signaling pathways, show perinatal lethality on the C57BL/6N, C57BL/6N × C57BL/6J or C57BL/6N × 129X1/SvJ background. Hrt1/Hey1 null embryos display abnormal development of the fourth PAA (PAA4), which results in congenital vascular defects including right-sided aortic arch, interruption of the aortic arch and aberrant origin of the right subclavian artery. Impaired vessel formation occurs randomly in PAA4 of Hrt1/Hey1 null embryos, which likely causes the variability of congenital malformations. Endothelial cells in PAA4 of null embryos differentiate normally but are structurally disorganized at embryonic day 10.5 and 11.5. Vascular smooth muscle cells are nearly absent in the structurally-defective PAA4, despite the appropriate migration of cardiac neural crest cells into the fourth pharyngeal arches. Endothelial expression of Jag1 is down-regulated in the structurally-defective PAA4 of null embryos, which may be one of the mechanisms underlying the suppression of vascular smooth muscle cell differentiation. While the direct downstream phenomena of the Hrt1/Hey1 deficiency remain to be clarified, we suggest that Hrt1/Hey1-dependent transcriptional regulation has an important role in PAA formation during embryonic development.
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Affiliation(s)
- Masahide Fujita
- Laboratory for Cardiovascular System Research, Nara Medical University Advanced Medical Research Center, Kashihara, Nara, Japan; Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Masahide Sakabe
- Laboratory for Cardiovascular System Research, Nara Medical University Advanced Medical Research Center, Kashihara, Nara, Japan; Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Tomoko Ioka
- Laboratory for Cardiovascular System Research, Nara Medical University Advanced Medical Research Center, Kashihara, Nara, Japan; Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Yusuke Watanabe
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Yumi Kinugasa-Katayama
- Laboratory for Cardiovascular System Research, Nara Medical University Advanced Medical Research Center, Kashihara, Nara, Japan; Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan
| | - Takatoshi Tsuchihashi
- Division of Pediatric Cardiology, Department of Pediatrics, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Manuel F Utset
- Department of Pathology, The University of Illinois at Chicago, Chicago, IL, USA
| | - Hiroyuki Yamagishi
- Division of Pediatric Cardiology, Department of Pediatrics, Keio University School of Medicine, Shinjuku, Tokyo, Japan
| | - Osamu Nakagawa
- Laboratory for Cardiovascular System Research, Nara Medical University Advanced Medical Research Center, Kashihara, Nara, Japan; Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Suita, Osaka, Japan.
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35
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George RM, Hahn KL, Rawls A, Viger RS, Wilson-Rawls J. Notch signaling represses GATA4-induced expression of genes involved in steroid biosynthesis. Reproduction 2015; 150:383-94. [PMID: 26183893 DOI: 10.1530/rep-15-0226] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Accepted: 07/16/2015] [Indexed: 12/18/2022]
Abstract
Notch2 and Notch3 and genes of the Notch signaling network are dynamically expressed in developing follicles, where they are essential for granulosa cell proliferation and meiotic maturation. Notch receptors, ligands, and downstream effector genes are also expressed in testicular Leydig cells, predicting a potential role in regulating steroidogenesis. In this study, we sought to determine if Notch signaling in small follicles regulates the proliferation response of granulosa cells to FSH and represses the up-regulation steroidogenic gene expression that occurs in response to FSH as the follicle grows. Inhibition of Notch signaling in small preantral follicles led to the up-regulation of the expression of genes in the steroid biosynthetic pathway. Similarly, progesterone secretion by MA-10 Leydig cells was significantly inhibited by constitutively active Notch. Together, these data indicated that Notch signaling inhibits steroidogenesis. GATA4 has been shown to be a positive regulator of steroidogenic genes, including STAR protein, P450 aromatase, and 3B-hydroxysteroid dehydrogenase. We observed that Notch downstream effectors HEY1, HEY2, and HEYL are able to differentially regulate these GATA4-dependent promoters. These data are supported by the presence of HEY/HES binding sites in these promoters. These studies indicate that Notch signaling has a role in the complex regulation of the steroidogenic pathway.
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Affiliation(s)
- Rajani M George
- School of Life SciencesArizona State University, PO Box 874501, Tempe, Arizona 85827-45012, USAReproductionMother and Child Health, Centre de Recherche du CHU de Québec and Centre de Recherche en Biologie de la Reproduction (CRBR), Quebec City, Quebec, CanadaDepartment of ObstetricsGynecology, and Reproduction, Laval University, Quebec City, Quebec, Canada G1K 7P4
| | - Katherine L Hahn
- School of Life SciencesArizona State University, PO Box 874501, Tempe, Arizona 85827-45012, USAReproductionMother and Child Health, Centre de Recherche du CHU de Québec and Centre de Recherche en Biologie de la Reproduction (CRBR), Quebec City, Quebec, CanadaDepartment of ObstetricsGynecology, and Reproduction, Laval University, Quebec City, Quebec, Canada G1K 7P4
| | - Alan Rawls
- School of Life SciencesArizona State University, PO Box 874501, Tempe, Arizona 85827-45012, USAReproductionMother and Child Health, Centre de Recherche du CHU de Québec and Centre de Recherche en Biologie de la Reproduction (CRBR), Quebec City, Quebec, CanadaDepartment of ObstetricsGynecology, and Reproduction, Laval University, Quebec City, Quebec, Canada G1K 7P4
| | - Robert S Viger
- School of Life SciencesArizona State University, PO Box 874501, Tempe, Arizona 85827-45012, USAReproductionMother and Child Health, Centre de Recherche du CHU de Québec and Centre de Recherche en Biologie de la Reproduction (CRBR), Quebec City, Quebec, CanadaDepartment of ObstetricsGynecology, and Reproduction, Laval University, Quebec City, Quebec, Canada G1K 7P4 School of Life SciencesArizona State University, PO Box 874501, Tempe, Arizona 85827-45012, USAReproductionMother and Child Health, Centre de Recherche du CHU de Québec and Centre de Recherche en Biologie de la Reproduction (CRBR), Quebec City, Quebec, CanadaDepartment of ObstetricsGynecology, and Reproduction, Laval University, Quebec City, Quebec, Canada G1K 7P4
| | - Jeanne Wilson-Rawls
- School of Life SciencesArizona State University, PO Box 874501, Tempe, Arizona 85827-45012, USAReproductionMother and Child Health, Centre de Recherche du CHU de Québec and Centre de Recherche en Biologie de la Reproduction (CRBR), Quebec City, Quebec, CanadaDepartment of ObstetricsGynecology, and Reproduction, Laval University, Quebec City, Quebec, Canada G1K 7P4
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Ruiz-Jones LJ, Palumbi SR. Transcriptome-wide Changes in Coral Gene Expression at Noon and Midnight Under Field Conditions. THE BIOLOGICAL BULLETIN 2015; 228:227-41. [PMID: 26124449 DOI: 10.1086/bblv228n3p227] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Reef-building corals experience high daily variation in their environment, food availability, and physiological activities such as calcification and photosynthesis by endosymbionts. On Ofu Island, American Samoa, we investigated day-night differences in gene expression under field conditions of changing pH, temperature, light, and oxygen. Using RNASeq techniques, we compared two replicate transcriptomes from a single coral colony of Acropora hyacinthus over six noons and five midnights. We identified 344 contigs with significant expression differences across 16,800 contigs in the transcriptome, most with small fold-changes. However, there were 21 contigs with fold-changes ranging from 10 to 141. The largest changes were in a set of transcription factors strongly associated with day-night gene regulation in other animals, including cryptochromes, thyrotroph embryonic factor, and D site-binding protein. We also found large daytime increases in a set of genes involved in glucose transport and glycogen storage. We found small expression differences in genes associated with aerobic ATP production and hypoxia response, along with slightly higher expression of most calcification genes at noon. Although >40-fold-changes in expression occur in important transcription factors, downstream gene regulation seems very stable in corals from day to night compared to other animals studied.
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Affiliation(s)
- Lupita J Ruiz-Jones
- Department of Biology, Stanford University, Hopkins Marine Station, 120 Oceanview Blvd., Pacific Grove, California 93950
| | - Stephen R Palumbi
- Department of Biology, Stanford University, Hopkins Marine Station, 120 Oceanview Blvd., Pacific Grove, California 93950
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Hermkens DMA, van Impel A, Urasaki A, Bussmann J, Duckers HJ, Schulte-Merker S. Sox7 controls arterial specification in conjunction with hey2 and efnb2 function. Development 2015; 142:1695-704. [PMID: 25834021 DOI: 10.1242/dev.117275] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 03/06/2015] [Indexed: 12/22/2022]
Abstract
SoxF family members have been linked to arterio-venous specification events and human pathological conditions, but in contrast to Sox17 and Sox18, a detailed in vivo analysis of a Sox7 mutant model is still lacking. In this study we generated zebrafish sox7 mutants to understand the role of Sox7 during vascular development. By in vivo imaging of transgenic zebrafish lines we show that sox7 mutants display a short circulatory loop around the heart as a result of aberrant connections between the lateral dorsal aorta (LDA) and either the venous primary head sinus (PHS) or the common cardinal vein (CCV). In situ hybridization and live observations in flt4:mCitrine transgenic embryos revealed increased expression levels of flt4 in arterial endothelial cells at the exact location of the aberrant vascular connections in sox7 mutants. An identical circulatory short loop could also be observed in newly generated mutants for hey2 and efnb2. By genetically modulating levels of sox7, hey2 and efnb2 we demonstrate a genetic interaction of sox7 with hey2 and efnb2. The specific spatially confined effect of loss of Sox7 function can be rescued by overexpressing the Notch intracellular domain (NICD) in arterial cells of sox7 mutants, placing Sox7 upstream of Notch in this aspect of arterial development. Hence, sox7 levels are crucial in arterial specification in conjunction with hey2 and efnb2 function, with mutants in all three genes displaying shunt formation and an arterial block.
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Affiliation(s)
- Dorien M A Hermkens
- Hubrecht Institute - Royal Netherlands Academy of Arts and Sciences and University Medical Centre Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands Erasmus MC Rotterdam, 's-Gravendijkwal 230, 3015 CE Rotterdam, The Netherlands
| | - Andreas van Impel
- Hubrecht Institute - Royal Netherlands Academy of Arts and Sciences and University Medical Centre Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Akihiro Urasaki
- Hubrecht Institute - Royal Netherlands Academy of Arts and Sciences and University Medical Centre Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Jeroen Bussmann
- Hubrecht Institute - Royal Netherlands Academy of Arts and Sciences and University Medical Centre Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands
| | - Henricus J Duckers
- Erasmus MC Rotterdam, 's-Gravendijkwal 230, 3015 CE Rotterdam, The Netherlands
| | - Stefan Schulte-Merker
- Hubrecht Institute - Royal Netherlands Academy of Arts and Sciences and University Medical Centre Utrecht, Uppsalalaan 8, 3584 CT Utrecht, The Netherlands Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM), University of Münster, 48149 Münster, Germany Institute for Cardiovascular Organogenesis and Regeneration, Faculty of Medicine, Westfälische Wilhelms-Universität Münster (WWU), Mendelstrasse 7, 48149 Münster, Germany
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Jahnsen ED, Trindade A, Zaun HC, Lehoux S, Duarte A, Jones EAV. Notch1 is pan-endothelial at the onset of flow and regulated by flow. PLoS One 2015; 10:e0122622. [PMID: 25830332 PMCID: PMC4382190 DOI: 10.1371/journal.pone.0122622] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2014] [Accepted: 02/23/2015] [Indexed: 11/18/2022] Open
Abstract
Arteriovenous differentiation is a key event during vascular development and hemodynamic forces play an important role. Arteriovenous gene expression is present before the onset of flow, however it remains plastic and flow can alter arteriovenous identity. Notch signaling is especially important in the genetic determination of arteriovenous identity. Nevertheless, the effect of the onset of circulation on Notch expression and signaling has not been studied. The aim of this study is therefore to investigate the interaction of Notch1 signaling and hemodynamic forces during early vascular development. We find that the onset of Notch1 expression coincides with the onset of flow, and that expression is pan-endothelial at the onset of circulation in mouse embryos and only becomes arterial-specific after remodeling has occurred. When we ablate flow in the early embryo, endothelial cells fail to express Notch1. We show that low and disturbed flow patterns upregulate Notch1 expression in endothelial cells in vitro, but that higher shear stress levels do not (≥10 dynes/cm2). Using siRNA, we knocked down Notch1 to investigate the role of Notch1 in mechanotransduction. When we applied shear stress levels similar to those found in embryonic arteries, we found an upregulation of Klf2, Dll1, Dll4, Jag1, Hey1, Nrp1 and CoupTFII but that only Dll4, Hey1, Nrp1 and EphB4 required Notch1 for flow-induced expression. Our results therefore indicate that Notch1 can modulate mechanotransduction but is not a critical mediator of the process since many genes mechanotransduce normally in the absence of Notch1, including genes involved in arteriovenous differentiation.
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Affiliation(s)
- Espen D. Jahnsen
- Lady Davis Institute for Medical Research, McGill University, 3755 Côte Ste Catherine, Montreal, Quebec, H3T 1E2, Canada
- Department of Biomedical Engineering, McGill University, 3775 University St, Montreal, QC, H3A 2B4, Canada
| | - Alexandre Trindade
- Centro Interdisciplinar de Investigação em Sanidade Animal, Faculdade de Medicina Veterinária, University of Lisbon, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Hans C. Zaun
- Lady Davis Institute for Medical Research, McGill University, 3755 Côte Ste Catherine, Montreal, Quebec, H3T 1E2, Canada
| | - Stéphanie Lehoux
- Lady Davis Institute for Medical Research, McGill University, 3755 Côte Ste Catherine, Montreal, Quebec, H3T 1E2, Canada
| | - António Duarte
- Centro Interdisciplinar de Investigação em Sanidade Animal, Faculdade de Medicina Veterinária, University of Lisbon, Lisboa, Portugal
- Instituto Gulbenkian de Ciência, Oeiras, Portugal
| | - Elizabeth A. V. Jones
- Lady Davis Institute for Medical Research, McGill University, 3755 Côte Ste Catherine, Montreal, Quebec, H3T 1E2, Canada
- Department of Biomedical Engineering, McGill University, 3775 University St, Montreal, QC, H3A 2B4, Canada
- Department of Cardiovascular Science, KU Leuven, UZ Herestraat 49—box 911, 3000, Leuven, Belgium
- * E-mail:
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Protective effect of berberine against myocardial ischemia reperfusion injury: role of Notch1/Hes1-PTEN/Akt signaling. Apoptosis 2015; 20:796-810. [DOI: 10.1007/s10495-015-1122-4] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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Hairy/enhancer-of-split related with YRPW motif protein 1 promotes osteosarcoma metastasis via matrix metallopeptidase 9 expression. Br J Cancer 2015; 112:1232-40. [PMID: 25742474 PMCID: PMC4385965 DOI: 10.1038/bjc.2015.84] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Revised: 01/23/2015] [Accepted: 02/04/2015] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND Activation of the Notch pathway has been reported in various types of cancers. However, the role of the hairy/enhancer-of-split related with YRPW motif protein 1 (HEY1) in osteosarcoma is unknown. We examined the function of HEY1 in osteosarcoma. METHODS Expression of HEY1 was studied in human osteosarcoma. The effects of HEY1 in osteosarcoma were evaluated in vitro and in a xenograft model. Moreover, we examined the function of matrix metallopeptidase 9 (MMP9) as a downstream effector of HEY1. RESULTS HEY1 was upregulated in human osteosarcoma. Knockdown of HEY1 inhibited the invasion of osteosarcoma cell lines. In contrast, the forced expression of HEY1 increased the invasion of mesenchymal stem cell. In addition, lung metastases were significantly inhibited by the knockdown of HEY1. We found that MMP9 was a downstream effector of HEY1 that promotes the invasion of osteosarcoma cells. Knockdown of HEY1 decreased the expression of MMP9. Addition of MMP9 rescued the invasion of osteosarcoma cells that had been rendered less invasive by knockdown of HEY1 expression. CONCLUSIONS Our findings suggested that HEY1 augmented the metastasis of osteosarcoma via upregulation of MMP9 expression. Therefore, inhibition of HEY1 may be a novel therapeutic strategy for preventing osteosarcoma metastasis.
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Wöltje K, Jabs M, Fischer A. Serum induces transcription of Hey1 and Hey2 genes by Alk1 but not Notch signaling in endothelial cells. PLoS One 2015; 10:e0120547. [PMID: 25799559 PMCID: PMC4370690 DOI: 10.1371/journal.pone.0120547] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2014] [Accepted: 01/23/2015] [Indexed: 01/10/2023] Open
Abstract
The transcriptional repressors Hey1 and Hey2 are primary target genes of Notch signaling in the cardiovascular system and induction of Hey gene expression is often interpreted as activation of Notch signaling. Here we report that treatment of primary human endothelial cells with serum or fresh growth medium led to a strong wave of Hey1 and Hey2 transcription lasting for approximately three hours. Transcription of other Notch target genes (Hes1, Hes5, ephrinB2, Dll4) was however not induced by serum in endothelial cells. Gamma secretase inhibition or expression of dominant-negative MAML1 did not prevent the induction of Hey genes indicating that canonical Notch signaling is dispensable. Pretreatment with soluble BMP receptor Alk1, but not Alk3, abolished Hey gene induction by serum. Consequently, the Alk1 ligand BMP9 stimulated Hey gene induction in endothelial cells. Several other cell types however did not show such a strong BMP signaling and consequently only a very mild induction of Hey genes. Taken together, the experiments revealed that bone morphogenic proteins within the serum of cell culture medium are potent inducers of endothelial Hey1 and Hey2 gene expression within the first few hours after medium change.
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Affiliation(s)
- Kerstin Wöltje
- Vascular Signaling and Cancer (A270), German Cancer Research Center (DKFZ-ZMBH Alliance), D-69120, Heidelberg, Germany
| | - Markus Jabs
- Vascular Signaling and Cancer (A270), German Cancer Research Center (DKFZ-ZMBH Alliance), D-69120, Heidelberg, Germany
| | - Andreas Fischer
- Vascular Signaling and Cancer (A270), German Cancer Research Center (DKFZ-ZMBH Alliance), D-69120, Heidelberg, Germany
- Vascular Biology and Tumor Angiogenesis, Medical Faculty Mannheim (CBTM), Heidelberg University, D-68167, Mannheim, Germany
- Department of Medicine I and Clinical Chemistry, Heidelberg University, D-69120, Heidelberg, Germany
- * E-mail:
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Weber D, Heisig J, Kneitz S, Wolf E, Eilers M, Gessler M. Mechanisms of epigenetic and cell-type specific regulation of Hey target genes in ES cells and cardiomyocytes. J Mol Cell Cardiol 2015; 79:79-88. [DOI: 10.1016/j.yjmcc.2014.11.004] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Revised: 10/07/2014] [Accepted: 11/06/2014] [Indexed: 01/20/2023]
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Swan AL, Stekel DJ, Hodgman C, Allaway D, Alqahtani MH, Mobasheri A, Bacardit J. A machine learning heuristic to identify biologically relevant and minimal biomarker panels from omics data. BMC Genomics 2015; 16 Suppl 1:S2. [PMID: 25923811 PMCID: PMC4315157 DOI: 10.1186/1471-2164-16-s1-s2] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
BACKGROUND Investigations into novel biomarkers using omics techniques generate large amounts of data. Due to their size and numbers of attributes, these data are suitable for analysis with machine learning methods. A key component of typical machine learning pipelines for omics data is feature selection, which is used to reduce the raw high-dimensional data into a tractable number of features. Feature selection needs to balance the objective of using as few features as possible, while maintaining high predictive power. This balance is crucial when the goal of data analysis is the identification of highly accurate but small panels of biomarkers with potential clinical utility. In this paper we propose a heuristic for the selection of very small feature subsets, via an iterative feature elimination process that is guided by rule-based machine learning, called RGIFE (Rule-guided Iterative Feature Elimination). We use this heuristic to identify putative biomarkers of osteoarthritis (OA), articular cartilage degradation and synovial inflammation, using both proteomic and transcriptomic datasets. RESULTS AND DISCUSSION Our RGIFE heuristic increased the classification accuracies achieved for all datasets when no feature selection is used, and performed well in a comparison with other feature selection methods. Using this method the datasets were reduced to a smaller number of genes or proteins, including those known to be relevant to OA, cartilage degradation and joint inflammation. The results have shown the RGIFE feature reduction method to be suitable for analysing both proteomic and transcriptomics data. Methods that generate large 'omics' datasets are increasingly being used in the area of rheumatology. CONCLUSIONS Feature reduction methods are advantageous for the analysis of omics data in the field of rheumatology, as the applications of such techniques are likely to result in improvements in diagnosis, treatment and drug discovery.
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Affiliation(s)
- Anna L Swan
- School of Biosciences, Faculty of Science, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, United Kingdom
| | - Dov J Stekel
- School of Biosciences, Faculty of Science, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, United Kingdom
| | - Charlie Hodgman
- School of Biosciences, Faculty of Science, University of Nottingham, Sutton Bonington Campus, Leicestershire, LE12 5RD, United Kingdom
- The D-BOARD European Consortium for Biomarker Discovery, The Universities of Surrey, Nottingham and Newcastle, United Kingdom
| | - David Allaway
- WALTHAM® Centre for Pet Nutrition, Waltham-on-the-Wolds, Melton Mowbray, Leicestershire, LE14 4RT, United Kingdom
| | - Mohammed H Alqahtani
- Center of Excellence in Genomic Medicine Research (CEGMR), King AbdulAziz University, Jeddah, 21589, Kingdom of Saudi Arabia
| | - Ali Mobasheri
- The D-BOARD European Consortium for Biomarker Discovery, The Universities of Surrey, Nottingham and Newcastle, United Kingdom
- School of Veterinary Medicine, Faculty of Health and Medical Sciences, University of Surrey, Duke of Kent Building, Guildford, Surrey, GU2 7XH, United Kingdom
- Center of Excellence in Genomic Medicine Research (CEGMR), King AbdulAziz University, Jeddah, 21589, Kingdom of Saudi Arabia
- Arthritis Research UK Centre for Sport, Exercise, and Osteoarthritis, Arthritis Research UK Pain Centre, Medical Research Council-Arthritis Research UK Centre for Musculoskeletal Ageing Research, Faculty of Medicine and Health Sciences, University of Nottingham, University Park, Nottingham, NG7 2RD, United Kingdom
| | - Jaume Bacardit
- The D-BOARD European Consortium for Biomarker Discovery, The Universities of Surrey, Nottingham and Newcastle, United Kingdom
- The Interdisciplinary Computing and Complex BioSystems (ICOS) research group, School of Computing Science, Newcastle University, Claremont Tower, Newcastle-upon-Tyne, NE1 7RU, United Kingdom
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Kangsamaksin T, Murtomaki A, Kofler NM, Cuervo H, Chaudhri RA, Tattersall IW, Rosenstiel PE, Shawber CJ, Kitajewski J. NOTCH decoys that selectively block DLL/NOTCH or JAG/NOTCH disrupt angiogenesis by unique mechanisms to inhibit tumor growth. Cancer Discov 2014; 5:182-97. [PMID: 25387766 DOI: 10.1158/2159-8290.cd-14-0650] [Citation(s) in RCA: 118] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
UNLABELLED A proangiogenic role for Jagged (JAG)-dependent activation of NOTCH signaling in the endothelium has yet to be described. Using proteins that encoded different NOTCH1 EGF-like repeats, we identified unique regions of Delta-like ligand (DLL)-class and JAG-class ligand-receptor interactions, and developed NOTCH decoys that function as ligand-specific NOTCH inhibitors. N110-24 decoy blocked JAG1/JAG2-mediated NOTCH1 signaling, angiogenic sprouting in vitro, and retinal angiogenesis, demonstrating that JAG-dependent NOTCH signal activation promotes angiogenesis. In tumors, N110-24 decoy reduced angiogenic sprouting, vessel perfusion, pericyte coverage, and tumor growth. JAG-NOTCH signaling uniquely inhibited expression of antiangiogenic soluble (s) VEGFR1/sFLT1. N11-13 decoy interfered with DLL1-DLL4-mediated NOTCH1 signaling and caused endothelial hypersprouting in vitro, in retinal angiogenesis, and in tumors. Thus, blockade of JAG- or DLL-mediated NOTCH signaling inhibits angiogenesis by distinct mechanisms. JAG-NOTCH signaling positively regulates angiogenesis by suppressing sVEGFR1-sFLT1 and promoting mural-endothelial cell interactions. Blockade of JAG-class ligands represents a novel, viable therapeutic approach to block tumor angiogenesis and growth. SIGNIFICANCE This is the first report identifying unique regions of the NOTCH1 extracellular domain that interact with JAG-class and DLL-class ligands. Using this knowledge, we developed therapeutic agents that block JAG-dependent NOTCH signaling and demonstrate for the first time that JAG blockade inhibits experimental tumor growth by targeting tumor angiogenesis.
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Affiliation(s)
- Thaned Kangsamaksin
- Department of Obstetrics/Gynecology, Columbia University Medical Center, Columbia University, New York, New York. Department of Biochemistry, Faculty of Science, Mahidol University, Bangkok, Thailand
| | - Aino Murtomaki
- Department of Obstetrics/Gynecology, Columbia University Medical Center, Columbia University, New York, New York. Division of Genetics, Department of Biosciences, Viikki Biocenter, University of Helsinki, Helsinki, Finland
| | - Natalie M Kofler
- Department of Obstetrics/Gynecology, Columbia University Medical Center, Columbia University, New York, New York
| | - Henar Cuervo
- Department of Obstetrics/Gynecology, Columbia University Medical Center, Columbia University, New York, New York
| | - Reyhaan A Chaudhri
- Department of Obstetrics/Gynecology, Columbia University Medical Center, Columbia University, New York, New York
| | - Ian W Tattersall
- Department of Obstetrics/Gynecology, Columbia University Medical Center, Columbia University, New York, New York
| | - Paul E Rosenstiel
- Department of Pathology and Cellular Biology, Columbia University Medical Center, Columbia University, New York, New York
| | - Carrie J Shawber
- Department of Obstetrics/Gynecology, Columbia University Medical Center, Columbia University, New York, New York. Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Columbia University, New York, New York. Department of Surgery, Columbia University Medical Center, Columbia University, New York, New York
| | - Jan Kitajewski
- Department of Obstetrics/Gynecology, Columbia University Medical Center, Columbia University, New York, New York. Department of Pathology and Cellular Biology, Columbia University Medical Center, Columbia University, New York, New York. Herbert Irving Comprehensive Cancer Center, Columbia University Medical Center, Columbia University, New York, New York.
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Shi N, Guo X, Chen SY. Olfactomedin 2, a novel regulator for transforming growth factor-β-induced smooth muscle differentiation of human embryonic stem cell-derived mesenchymal cells. Mol Biol Cell 2014; 25:4106-14. [PMID: 25298399 PMCID: PMC4263453 DOI: 10.1091/mbc.e14-08-1255] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
Smooth muscle plays important roles in vascular development. Study of smooth muscle differentiation of human embryonic stem cell–derived mesenchymal cells identifies olfactomedin 2 as a novel regulator. Olfactomedin 2 regulates smooth muscle gene transcription by empowering serum response factor binding to the CArG box in smooth muscle gene promoters. Transforming growth factor-β (TGF-β) plays an important role in smooth muscle (SM) differentiation, but the downstream target genes regulating the differentiation process remain largely unknown. In this study, we identified olfactomedin 2 (Olfm2) as a novel regulator mediating SM differentiation. Olfm2 was induced during TGF-β–induced SM differentiation of human embryonic stem cell–derived mesenchymal cells. Olfm2 knockdown suppressed TGF-β–induced expression of SM markers, including SM α-actin, SM22α, and SM myosin heavy chain, whereas Olfm2 overexpression promoted the SM marker expression. TGF-β induced Olfm2 nuclear accumulation, suggesting that Olfm2 may be involved in transcriptional activation of SM markers. Indeed, Olfm2 regulated SM marker expression and promoter activity in a serum response factor (SRF)/CArG box–dependent manner. Olfm2 physically interacted with SRF without affecting SRF-myocardin interaction. Olfm2-SRF interaction promoted the dissociation of SRF from HERP1, a transcriptional repressor. Olfm2 also inhibited HERP1 expression. Moreover, blockade of Olfm2 expression inhibited TGF-β–induced SRF binding to SM gene promoters in a chromatin setting, whereas overexpression of Olfm2 dose dependently enhanced SRF binding. These results demonstrate that Olfm2 mediates TGF-β–induced SM gene transcription by empowering SRF binding to CArG box in SM gene promoters.
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Affiliation(s)
- Ning Shi
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA 30602
| | - Xia Guo
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA 30602
| | - Shi-You Chen
- Department of Physiology and Pharmacology, University of Georgia, Athens, GA 30602
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Han L, Diehl A, Nguyen NK, Korangath P, Teo W, Cho S, Kominsky S, Huso DL, Feigenbaum L, Rein A, Argani P, Landberg G, Gessler M, Sukumar S. The Notch pathway inhibits TGFβ signaling in breast cancer through HEYL-mediated crosstalk. Cancer Res 2014; 74:6509-18. [PMID: 25217524 DOI: 10.1158/0008-5472.can-14-0816] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Acquired resistance to TGFβ is a key step in the early stages of tumorigenesis. Mutations in TGFβ signaling components are rare, and little is known about the development of resistance in breast cancer. On the other hand, an activated Notch pathway is known to play a substantial role in promoting breast cancer development. Here, we present evidence of crosstalk between these two pathways through HEYL. HEYL, a basic helix-loop-helix transcription factor and a direct target of Notch signaling, is specifically overexpressed in breast cancer. HEYL represses TGFβ activity by binding to TGFβ-activated Smads. HeyL(-/-) mice have defective mammary gland development with fewer terminal end buds. On the other hand, HeyL transgenic mice show accelerated mammary gland epithelial proliferation and 24% of multiparous mice develop mammary gland cancer. Therefore, repression of TGFβ signaling by Notch acting through HEYL may promote initiation of breast cancer.
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Affiliation(s)
- Liangfeng Han
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Adam Diehl
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Nguyen K Nguyen
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Preethi Korangath
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Weiwen Teo
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Soonweng Cho
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Scott Kominsky
- Department of Orthopaedic Surgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - David L Huso
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Lionel Feigenbaum
- Laboratory Animal Science Program, Science Applications International Corporation, Frederick, Maryland
| | - Alan Rein
- HIV Drug Resistance Program, National Cancer Institute, Frederick, Maryland
| | - Pedram Argani
- Department of Pathology, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Goran Landberg
- Breakthrough Breast Cancer Unit, School of Cancer, University of Manchester, Manchester Academic Health Science Centre, Manchester, United Kingdom
| | - Manfred Gessler
- Developmental Biochemistry, Comprehensive Cancer Center Mainfraken and Theodor-Boveri-Institute, Biocenter, University of Wuerzburg, Wuerzburg, Germany
| | - Saraswati Sukumar
- Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, Maryland.
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Hartman ME, Liu Y, Zhu WZ, Chien WM, Weldy CS, Fishman GI, Laflamme MA, Chin MT. Myocardial deletion of transcription factor CHF1/Hey2 results in altered myocyte action potential and mild conduction system expansion but does not alter conduction system function or promote spontaneous arrhythmias. FASEB J 2014; 28:3007-15. [PMID: 24687990 DOI: 10.1096/fj.14-251728] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
CHF1/Hey2 is a Notch-responsive basic helix-loop-helix transcription factor involved in cardiac development. Common variants in Hey2 are associated with Brugada syndrome. We hypothesized that absence of CHF1/Hey2 would result in abnormal cellular electrical activity, altered cardiac conduction system (CCS) development, and increased arrhythmogenesis. We isolated neonatal CHF/Hey2-knockout (KO) cardiac myocytes and measured action potentials and ion channel subunit gene expression. We also crossed myocardial-specific CHF1/Hey2-KO mice with cardiac conduction system LacZ reporter mice and stained for conduction system tissue. We also performed ambulatory ECG monitoring for arrhythmias and heart rate variability. Neonatal cardiomyocytes from CHF1/Hey2-KO mice demonstrate a 50% reduction in action potential dV/dT, a 50-75% reduction in SCN5A, KCNJ2, and CACNA1C ion channel subunit gene expression, and an increase in delayed afterdepolarizations from 0/min to 12/min. CHF1/Hey2 cKO CCS-lacZ mice have a ∼3-fold increase in amount of CCS tissue. Ambulatory ECG monitoring showed no difference in cardiac conduction, arrhythmias, or heart rate variability. Wild-type cells or animals were used in all experiments. CHF1/Hey2 may contribute to Brugada syndrome by influencing the expression of SCN5A and formation of the cardiac conduction system, but its absence does not cause baseline conduction defects or arrhythmias in the adult mouse.-Hartman, M. E., Liu, Y., Zhu, W.-Z., Chien, W.-M., Weldy, C. S., Fishman, G. I., Laflamme, M. A., Chin, M. T. Myocardial deletion of transcription factor CHF1/Hey2 results in altered myocyte action potential and mild conduction system expansion but does not alter conduction system function or promote spontaneous arrhythmias.
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Affiliation(s)
| | - Yonggang Liu
- Division of Cardiology, Department of Medicine, and
| | - Wei-Zhong Zhu
- Department of Pathology, Institute for Stem Cells and Regenerative Medicine, University of Washington, Seattle, Washington, USA; and
| | | | - Chad S Weldy
- Division of Cardiology, Department of Medicine, and
| | - Glenn I Fishman
- The Leon H. Charney Division of Cardiology, Department of Medicine, New York University School of Medicine, New York, New York, USA
| | - Michael A Laflamme
- Department of Pathology, Institute for Stem Cells and Regenerative Medicine, University of Washington, Seattle, Washington, USA; and
| | - Michael T Chin
- Division of Cardiology, Department of Medicine, and Department of Pathology, Institute for Stem Cells and Regenerative Medicine, University of Washington, Seattle, Washington, USA; and
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48
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Basak NP, Roy A, Banerjee S. Alteration of mitochondrial proteome due to activation of Notch1 signaling pathway. J Biol Chem 2014; 289:7320-34. [PMID: 24474689 DOI: 10.1074/jbc.m113.519405] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
The Notch signaling pathway, a known regulator of cell fate decisions, proliferation, and apoptosis, has recently been implicated in the regulation of glycolysis, which affects tumor progression. However, the impact of Notch on other metabolic pathways remains to be elucidated. To gain more insights into the Notch signaling and its role in regulation of metabolism, we studied the mitochondrial proteome in Notch1-activated K562 cells using a comparative proteomics approach. The proteomic study led to the identification of 10 unique proteins that were altered due to Notch1 activation. Eight of these proteins belonged to mitochondria-localized metabolic pathways like oxidative phosphorylation, glutamine metabolism, Krebs cycle, and fatty acid oxidation. Validation of some of these findings showed that constitutive activation of Notch1 deregulated glutamine metabolism and Complex 1 of the respiratory chain. Furthermore, the deregulation of glutamine metabolism involved the canonical Notch signaling and its downstream effectors. The study also reports the effect of Notch signaling on mitochondrial function and status of high energy intermediates ATP, NADH, and NADPH. Thus our study shows the effect of Notch signaling on mitochondrial proteome, which in turn affects the functioning of key metabolic pathways, thereby connecting an important signaling pathway to the regulation of cellular metabolism.
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Affiliation(s)
- Nandini Pal Basak
- From the Biophysics and Structural Genomics Division, Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata 700064, India
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49
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Abstract
Hey bHLH transcription factors are direct targets of canonical Notch signaling. The three mammalian Hey proteins are closely related to Hes proteins and they primarily repress target genes by either directly binding to core promoters or by inhibiting other transcriptional activators. Individual candidate gene approaches and systematic screens identified a number of Hey target genes, which often encode other transcription factors involved in various developmental processes. Here, we review data on interaction partners and target genes and conclude with a model for Hey target gene regulation. Furthermore, we discuss how expression of Hey proteins affects processes like cell fate decisions and differentiation, e.g., in cardiovascular, skeletal, and neural development or oncogenesis and how this relates to the observed developmental defects and phenotypes observed in various knockout mice.
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Affiliation(s)
- David Weber
- Developmental Biochemistry, Theodor-Boveri-Institute/Biocenter, Wuerzburg University, Wuerzburg, Germany
| | - Cornelia Wiese
- Developmental Biochemistry, Theodor-Boveri-Institute/Biocenter, Wuerzburg University, Wuerzburg, Germany
| | - Manfred Gessler
- Developmental Biochemistry, Theodor-Boveri-Institute/Biocenter, Wuerzburg University, Wuerzburg, Germany; Comprehensive Cancer Center Mainfranken, Wuerzburg University, Wuerzburg, Germany.
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50
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Hes-1-targeting siRNA inhibits the maturation of murine myeloid-derived dendritic cells. Open Life Sci 2013. [DOI: 10.2478/s11535-013-0231-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
AbstractActivation of Notch by Jagged-1 may plays a pivotal role in maturation of dendritic cells (DCs), but the mechanism has not been completely defined. In the present study, Hes-1 (Hairy/enhancer-of-split)-targeting siRNA was used to confirm a role of Jagged-1-Notch signaling pathway activation in maturation of murine bone marrow-derived DCs and to search for a target that plays a critical role. The results showed that compared with the control, lipopolysaccharide or Zymosan A groups, Jagged-1 (a soluble Jagged 1/Fc chimera protein) effectively increased expression of Hes-1 and Deltex-1 mRNA, which could be reversed by DAPT (2, 4-diamino-5-phenylthiazole), a specific inhibitor of the Notch signaling pathway. Hes-1-targeting siRNA could successfully down-regulate the endogenous Hes-1 expression in the DCs. Concurrently, a significant down-regulation of CD40, CD80, CD86 and MHC-II expressions on the surface of the DCs was found with the reduction of IL-12 yielded by the DCs. Our results demonstrate that Hes-1-targeting siRNA can inhibit the maturation of the DCs induced by Jagged-1, indicating Hes-1 may be an important target of Notch signaling mediating the maturation of DCs.
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