101
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Zhao Z, Rahman MA, Chen ZG, Shin DM. Multiple biological functions of Twist1 in various cancers. Oncotarget 2017; 8:20380-20393. [PMID: 28099910 PMCID: PMC5386770 DOI: 10.18632/oncotarget.14608] [Citation(s) in RCA: 107] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Accepted: 01/01/2017] [Indexed: 01/05/2023] Open
Abstract
Twist1 is a well-known regulator of transcription during embryonic organogenesis in many species. In humans, Twist1 malfunction was first linked to Saethre-Chotzen syndrome and later identified to play an essential role in tumor initiation, stemness, angiogenesis, invasion, metastasis, and chemo-resistance in a variety of carcinomas, sarcomas, and hematological malignances. In this review, we will first focus on systematically elaborating the diverse pathological functions of Twist1 in various cancers, then delineating the intricate underlying network of molecular mechanisms, based on which we will summarize current therapeutic strategies in cancer treatment that target and modulate Twist1-involved signaling pathways. Most importantly, we will put special emphasis on revealing the independence and interdependency of these multiple biological functions of Twist1, piecing together the whole delicate picture of Twist1's diversified pathological roles in different cancers and providing new perspectives to guide future research.
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Affiliation(s)
- Zhixiang Zhao
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA, United States of America.,Department of Dermatology, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Mohammad Aminur Rahman
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA, United States of America
| | - Zhuo G Chen
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA, United States of America
| | - Dong M Shin
- Department of Hematology and Medical Oncology, Winship Cancer Institute of Emory University, Atlanta, GA, United States of America
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102
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Schock EN, Brugmann SA. Discovery, Diagnosis, and Etiology of Craniofacial Ciliopathies. Cold Spring Harb Perspect Biol 2017; 9:cshperspect.a028258. [PMID: 28213462 DOI: 10.1101/cshperspect.a028258] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Seventy-five percent of congenital disorders present with some form of craniofacial malformation. The frequency and severity of these malformations makes understanding the etiological basis crucial for diagnosis and treatment. A significant link between craniofacial malformations and primary cilia arose several years ago with the determination that ∼30% of ciliopathies could be primarily defined by their craniofacial phenotype. The link between the cilium and the face has proven significant, as several new "craniofacial ciliopathies" have recently been diagnosed. Herein, we reevaluate public disease databases, report several new craniofacial ciliopathies, and propose several "predicted" craniofacial ciliopathies. Furthermore, we discuss why the craniofacial complex is so sensitive to ciliopathic dysfunction, addressing tissue-specific functions of the cilium as well as its role in signal transduction relevant to craniofacial development. As a whole, these analyses suggest a characteristic facial phenotype associated with craniofacial ciliopathies that can perhaps be used for rapid discovery and diagnosis of similar disorders in the future.
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Affiliation(s)
- Elizabeth N Schock
- Division of Plastic Surgery, Department of Surgery, and Division of Developmental Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229
| | - Samantha A Brugmann
- Division of Plastic Surgery, Department of Surgery, and Division of Developmental Biology, Department of Pediatrics, Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio 45229
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103
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De novo mutations in inhibitors of Wnt, BMP, and Ras/ERK signaling pathways in non-syndromic midline craniosynostosis. Proc Natl Acad Sci U S A 2017; 114:E7341-E7347. [PMID: 28808027 DOI: 10.1073/pnas.1709255114] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Non-syndromic craniosynostosis (NSC) is a frequent congenital malformation in which one or more cranial sutures fuse prematurely. Mutations causing rare syndromic craniosynostoses in humans and engineered mouse models commonly increase signaling of the Wnt, bone morphogenetic protein (BMP), or Ras/ERK pathways, converging on shared nuclear targets that promote bone formation. In contrast, the genetics of NSC is largely unexplored. More than 95% of NSC is sporadic, suggesting a role for de novo mutations. Exome sequencing of 291 parent-offspring trios with midline NSC revealed 15 probands with heterozygous damaging de novo mutations in 12 negative regulators of Wnt, BMP, and Ras/ERK signaling (10.9-fold enrichment, P = 2.4 × 10-11). SMAD6 had 4 de novo and 14 transmitted mutations; no other gene had more than 1. Four familial NSC kindreds had mutations in genes previously implicated in syndromic disease. Collectively, these mutations contribute to 10% of probands. Mutations are predominantly loss-of-function, implicating haploinsufficiency as a frequent mechanism. A common risk variant near BMP2 increased the penetrance of SMAD6 mutations and was overtransmitted to patients with de novo mutations in other genes in these pathways, supporting a frequent two-locus pathogenesis. These findings implicate new genes in NSC and demonstrate related pathophysiology of common non-syndromic and rare syndromic craniosynostoses. These findings have implications for diagnosis, risk of recurrence, and risk of adverse neurodevelopmental outcomes. Finally, the use of pathways identified in rare syndromic disease to find genes accounting for non-syndromic cases may prove broadly relevant to understanding other congenital disorders featuring high locus heterogeneity.
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104
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Kim S, Twigg SR, Scanlon VA, Chandra A, Hansen TJ, Alsubait A, Fenwick AL, McGowan SJ, Lord H, Lester T, Sweeney E, Weber A, Cox H, Wilkie AO, Golden A, Corsi AK. Localized TWIST1 and TWIST2 basic domain substitutions cause four distinct human diseases that can be modeled in Caenorhabditis elegans. Hum Mol Genet 2017; 26:2118-2132. [PMID: 28369379 PMCID: PMC5438873 DOI: 10.1093/hmg/ddx107] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Revised: 02/24/2017] [Accepted: 03/14/2017] [Indexed: 12/17/2022] Open
Abstract
Twist transcription factors, members of the basic helix-loop-helix family, play crucial roles in mesoderm development in all animals. Humans have two paralogous genes, TWIST1 and TWIST2, and mutations in each gene have been identified in specific craniofacial disorders. Here, we describe a new clinical entity, Sweeney-Cox syndrome, associated with distinct de novo amino acid substitutions (p.Glu117Val and p.Glu117Gly) at a highly conserved glutamic acid residue located in the basic DNA binding domain of TWIST1, in two subjects with frontonasal dysplasia and additional malformations. Although about one hundred different TWIST1 mutations have been reported in patients with the dominant haploinsufficiency Saethre-Chotzen syndrome (typically associated with craniosynostosis), substitutions uniquely affecting the Glu117 codon were not observed previously. Recently, subjects with Barber-Say and Ablepharon-Macrostomia syndromes were found to harbor heterozygous missense substitutions in the paralogous glutamic acid residue in TWIST2 (p.Glu75Ala, p.Glu75Gln and p.Glu75Lys). To study systematically the effects of these substitutions in individual cells of the developing mesoderm, we engineered all five disease-associated alleles into the equivalent Glu29 residue encoded by hlh-8, the single Twist homolog present in Caenorhabditis elegans. This allelic series revealed that different substitutions exhibit graded severity, in terms of both gene expression and cellular phenotype, which we incorporate into a model explaining the various human disease phenotypes. The genetic analysis favors a predominantly dominant-negative mechanism for the action of amino acid substitutions at this highly conserved glutamic acid residue and illustrates the value of systematic mutagenesis of C. elegans for focused investigation of human disease processes.
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Affiliation(s)
- Sharon Kim
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Stephen R.F. Twigg
- Clinical Genetics Group, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DS, UK
| | - Victoria A. Scanlon
- Department of Biology, The Catholic University of America, Washington, DC 20064, USA
| | - Aditi Chandra
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tyler J. Hansen
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Arwa Alsubait
- Department of Biology, The Catholic University of America, Washington, DC 20064, USA
| | - Aimee L. Fenwick
- Clinical Genetics Group, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DS, UK
| | - Simon J. McGowan
- Computational Biology Research Group, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DS, UK
| | - Helen Lord
- Oxford Medical Genetics Laboratories, Oxford University Hospitals NHS Foundation Trust, Churchill Hospital, Oxford OX3 7LE, UK
| | - Tracy Lester
- Oxford Medical Genetics Laboratories, Oxford University Hospitals NHS Foundation Trust, Churchill Hospital, Oxford OX3 7LE, UK
| | - Elizabeth Sweeney
- Department of Clinical Genetics, Liverpool Women’s NHS Foundation Trust, Liverpool L8 7SS, UK
| | - Astrid Weber
- Department of Clinical Genetics, Liverpool Women’s NHS Foundation Trust, Liverpool L8 7SS, UK
| | - Helen Cox
- Clinical Genetics Unit, Birmingham Women’s NHS Foundation Trust, Birmingham Women’s Hospital, Birmingham B15 2TG, UK
| | - Andrew O.M. Wilkie
- Clinical Genetics Group, MRC Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Oxford OX3 9DS, UK
| | - Andy Golden
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ann K. Corsi
- Department of Biology, The Catholic University of America, Washington, DC 20064, USA
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105
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Werner S, Stenzl A, Pantel K, Todenhöfer T. Expression of Epithelial Mesenchymal Transition and Cancer Stem Cell Markers in Circulating Tumor Cells. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2017; 994:205-228. [DOI: 10.1007/978-3-319-55947-6_11] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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106
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Bouard C, Terreux R, Tissier A, Jacqueroud L, Vigneron A, Ansieau S, Puisieux A, Payen L. Destabilization of the TWIST1/E12 complex dimerization following the R154P point-mutation of TWIST1: an in silico approach. BMC STRUCTURAL BIOLOGY 2017; 17:6. [PMID: 28521820 PMCID: PMC5437649 DOI: 10.1186/s12900-017-0076-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/03/2017] [Accepted: 05/02/2017] [Indexed: 11/24/2022]
Abstract
Background The bHLH transcription factor TWIST1 plays a key role in the embryonic development and in tumorigenesis. Some loss-of-function mutations of the TWIST1 gene have been shown to cause an autosomal dominant craniosynostosis, known as the Saethre-Chotzen syndrome (SCS). Although the functional impacts of many TWIST1 mutations have been experimentally reported, little is known on the molecular mechanisms underlying their loss-of-function. In a previous study, we highlighted the predictive value of in silico molecular dynamics (MD) simulations in deciphering the molecular function of TWIST1 residues. Results Here, since the substitution of the arginine 154 amino acid by a glycine residue (R154G) is responsible for the SCS phenotype and the substitution of arginine 154 by a proline experimentally decreases the dimerizing ability of TWIST1, we investigated the molecular impact of this point mutation using MD approaches. Consistently, MD simulations highlighted a clear decrease in the stability of the α-helix during the dimerization of the mutated R154P TWIST1/E12 dimer compared to the wild-type TE complex, which was further confirmed in vitro using immunoassays. Conclusions Our study demonstrates that MD simulations provide a structural explanation for the loss-of-function associated with the SCS TWIST1 mutation and provides a proof of concept of the predictive value of these MD simulations. This in silico methodology could be used to determine reliable pharmacophore sites, leading to the application of docking approaches in order to identify specific inhibitors of TWIST1 complexes. Electronic supplementary material The online version of this article (doi:10.1186/s12900-017-0076-x) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Charlotte Bouard
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,LabEX DEVweCAN, Lyon, France.,UNIV UMR1052, Lyon, 69008, France.,Centre Léon Bérard, Lyon, 69373, France
| | - Raphael Terreux
- Université de Lyon1, ISPB, Lyon, 69008, France.,Pole Rhône-Alpes de Bioinformatique - Lyon Gerland (PRABI-LG), Lyon, 69007, France.,CNRS UMR 5305, Lyon, France
| | - Agnès Tissier
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,LabEX DEVweCAN, Lyon, France.,UNIV UMR1052, Lyon, 69008, France.,Centre Léon Bérard, Lyon, 69373, France
| | - Laurent Jacqueroud
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,LabEX DEVweCAN, Lyon, France.,UNIV UMR1052, Lyon, 69008, France.,Centre Léon Bérard, Lyon, 69373, France
| | - Arnaud Vigneron
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,LabEX DEVweCAN, Lyon, France.,UNIV UMR1052, Lyon, 69008, France.,Centre Léon Bérard, Lyon, 69373, France
| | - Stéphane Ansieau
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,LabEX DEVweCAN, Lyon, France.,UNIV UMR1052, Lyon, 69008, France.,Centre Léon Bérard, Lyon, 69373, France
| | - Alain Puisieux
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France.,LabEX DEVweCAN, Lyon, France.,UNIV UMR1052, Lyon, 69008, France.,Centre Léon Bérard, Lyon, 69373, France.,Université de Lyon1, ISPB, Lyon, 69008, France.,Institut Universitaire de France, Paris, 75231, France
| | - Léa Payen
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France. .,CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon, 69373, France. .,LabEX DEVweCAN, Lyon, France. .,UNIV UMR1052, Lyon, 69008, France. .,Centre Léon Bérard, Lyon, 69373, France. .,Université de Lyon1, ISPB, Lyon, 69008, France. .,Laboratoire de Biochimie et Biologie Moléculaire (CHLS), Hospices Civils de Lyon, Lyon, 69003, France.
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107
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Transcription factor SPZ1 promotes TWIST-mediated epithelial-mesenchymal transition and oncogenesis in human liver cancer. Oncogene 2017; 36:4405-4414. [PMID: 28368406 PMCID: PMC5543259 DOI: 10.1038/onc.2017.69] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2016] [Revised: 01/31/2017] [Accepted: 02/04/2017] [Indexed: 12/17/2022]
Abstract
The epithelial-mesenchymal transition (EMT) is an important process in the progression of cancer. However, its occurrence and mechanism of regulation are not fully understood. We propose a regulatory pathway in which spermatogenic leucine zipper 1 (SPZ1) promotes EMT through its transactivating ability in increasing TWIST1 expression. We compared the expression of SPZ1 and TWIST1 in specimens of hepatocarcinoma cells (HCCs) and non-HCCs. Expression of SPZ1 exhibited a tumor-specific expression pattern and a high correlation with patients' survival time, tumor size, tumor number and progression stage. Moreover, forced expression and knockdown of SPZ1 in hepatoma cells showed that SPZ1 was able to regulate the cellular proliferation, invasion, and tumorigenic activity in a TWIST1-dependent manner in vitro and in vivo. These data demonstrate that SPZ1, a newly dscribed molecule, transactivates TWIST1 promoters, and that this SPZ1-TWIST axis mediates EMT signaling and exerts significant regulatory effects on tumor oncogenesis.
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108
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Cleary MA, Narcisi R, Albiero A, Jenner F, de Kroon LMG, Koevoet WJLM, Brama PAJ, van Osch GJVM. Dynamic Regulation of TWIST1 Expression During Chondrogenic Differentiation of Human Bone Marrow-Derived Mesenchymal Stem Cells. Stem Cells Dev 2017; 26:751-761. [PMID: 28300491 DOI: 10.1089/scd.2016.0308] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Human bone marrow-derived mesenchymal stem cells (BMSCs) are clinically promising to repair damaged articular cartilage. This study investigated TWIST1, an important transcriptional regulator in mesenchymal lineages, in BMSC chondrogenesis. We hypothesized that downregulation of TWIST1 expression is required for in vitro chondrogenic differentiation. Indeed, significant downregulation of TWIST1 was observed in murine skeletal progenitor cells during limb development (N = 3 embryos), and during chondrogenic differentiation of culture-expanded human articular chondrocytes (N = 3 donors) and isolated adult human BMSCs (N = 7 donors), consistent with an inhibitory effect of TWIST1 expression on chondrogenic differentiation. Silencing of TWIST1 expression in BMSCs by siRNA, however, did not improve chondrogenic differentiation potential. Interestingly, additional investigation revealed that downregulation of TWIST1 in chondrogenic BMSCs is preceded by an initial upregulation. Similar upregulation is observed in non-chondrogenic BMSCs (N = 5 donors); however, non-chondrogenic cells fail to downregulate TWIST1 expression thereafter, preventing their chondrogenic differentiation. This study describes for the first time endogenous TWIST1 expression during in vitro chondrogenic differentiation of human BMSCs, demonstrating dynamic regulation of TWIST1 expression whereby upregulation and then downregulation of TWIST1 expression are required for chondrogenic differentiation of BMSCs. Elucidation of the molecular regulation of, and by, TWIST1 will provide targets for optimization of BMSC chondrogenic differentiation culture.
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Affiliation(s)
- Mairéad A Cleary
- 1 School of Veterinary Medicine, Veterinary Clinical Sciences, University College Dublin , Dublin, Ireland .,2 Department of Orthopaedics, Erasmus MC, University Medical Center , Rotterdam, the Netherlands
| | - Roberto Narcisi
- 2 Department of Orthopaedics, Erasmus MC, University Medical Center , Rotterdam, the Netherlands
| | - Anna Albiero
- 2 Department of Orthopaedics, Erasmus MC, University Medical Center , Rotterdam, the Netherlands
| | - Florien Jenner
- 3 University of Veterinary Medicine Vienna , Equine Hospital, Vienna, Austria
| | - Laurie M G de Kroon
- 2 Department of Orthopaedics, Erasmus MC, University Medical Center , Rotterdam, the Netherlands .,4 Department of Rheumatology, Radboud University Medical Center , Nijmegen, the Netherlands
| | - Wendy J L M Koevoet
- 5 Department of Otorhinolaryngology, Erasmus MC, University Medical Center , Rotterdam, the Netherlands
| | - Pieter A J Brama
- 1 School of Veterinary Medicine, Veterinary Clinical Sciences, University College Dublin , Dublin, Ireland
| | - Gerjo J V M van Osch
- 2 Department of Orthopaedics, Erasmus MC, University Medical Center , Rotterdam, the Netherlands .,5 Department of Otorhinolaryngology, Erasmus MC, University Medical Center , Rotterdam, the Netherlands
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109
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Tan J, Tedrow JR, Nouraie M, Dutta JA, Miller DT, Li X, Yu S, Chu Y, Juan-Guardela B, Kaminski N, Ramani K, Biswas PS, Zhang Y, Kass DJ. Loss of Twist1 in the Mesenchymal Compartment Promotes Increased Fibrosis in Experimental Lung Injury by Enhanced Expression of CXCL12. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 2017; 198:2269-2285. [PMID: 28179498 PMCID: PMC5337810 DOI: 10.4049/jimmunol.1600610] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 01/12/2017] [Indexed: 01/24/2023]
Abstract
Idiopathic pulmonary fibrosis (IPF) is a disease characterized by the accumulation of apoptosis-resistant fibroblasts in the lung. We have previously shown that high expression of the transcription factor Twist1 may explain this prosurvival phenotype in vitro. However, this observation has never been tested in vivo. We found that loss of Twist1 in COL1A2+ cells led to increased fibrosis characterized by very significant accumulation of T cells and bone marrow-derived matrix-producing cells. We found that Twist1-null cells expressed high levels of the T cell chemoattractant CXCL12. In vitro, we found that the loss of Twist1 in IPF lung fibroblasts increased expression of CXCL12 downstream of increased expression of the noncanonical NF-κB transcription factor RelB. Finally, blockade of CXCL12 with AMD3100 attenuated the exaggerated fibrosis observed in Twist1-null mice. Transcriptomic analysis of 134 IPF patients revealed that low expression of Twist1 was characterized by enrichment of T cell pathways. In conclusion, loss of Twist1 in collagen-producing cells led to increased bleomycin-induced pulmonary fibrosis, which is mediated by increased expression of CXCL12. Twist1 expression is associated with dysregulation of T cells in IPF patients. Twist1 may shape the IPF phenotype and regulate inflammation in fibrotic lung injury.
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Affiliation(s)
- Jiangning Tan
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - John R Tedrow
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Mehdi Nouraie
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Justin A Dutta
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - David T Miller
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Xiaoyun Li
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Shibing Yu
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Yanxia Chu
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Brenda Juan-Guardela
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University, New Haven, CT 06520; and
| | - Naftali Kaminski
- Section of Pulmonary, Critical Care, and Sleep Medicine, Department of Internal Medicine, Yale University, New Haven, CT 06520; and
| | - Kritika Ramani
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261
| | - Partha S Biswas
- Division of Rheumatology and Clinical Immunology, Department of Medicine, University of Pittsburgh, Pittsburgh, PA 15261
| | - Yingze Zhang
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213
| | - Daniel J Kass
- Dorothy P. and Richard P. Simmons Center for Interstitial Lung Disease and the Division of Pulmonary, Allergy, and Critical Care Medicine, University of Pittsburgh, Pittsburgh, PA 15213;
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110
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Hasei J, Teramura T, Takehara T, Onodera Y, Horii T, Olmer M, Hatada I, Fukuda K, Ozaki T, Lotz MK, Asahara H. TWIST1 induces MMP3 expression through up-regulating DNA hydroxymethylation and promotes catabolic responses in human chondrocytes. Sci Rep 2017; 7:42990. [PMID: 28220902 PMCID: PMC5318945 DOI: 10.1038/srep42990] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2016] [Accepted: 01/18/2017] [Indexed: 02/05/2023] Open
Abstract
The objective was to investigate the levels of TWIST1 in normal and OA cartilage and examine its role in regulating gene expression in chondrocytes. Human cartilage tissues and chondrocytes were obtained at autopsy from normal knee joints and from OA-affected joints at the time of total knee arthroplasty. TWIST1 expression was increased in human OA knee cartilage compared to normal knee cartilage. TWIST1 induced matrix metalloproteinase 3 (MMP3) expression without direct binding to MMP3 promoter and increased the 5-hydroxymethylcytosine (5hmC) level at the MMP3 promoter. The effect of TWIST1 on expression of TET family (TET1, 2 and 3) was measured in stable TWIST1 transfected TC28 cells, and TET1 expression was up-regulated. TWIST1 dependent upregulation of Mmp3 expression was suppressed in Tet triple KO fibroblast derived from mouse ES cells. Increased TWIST1 expression is a feature of OA-affected cartilage. We identified a novel mechanism of catabolic reaction where TWIST1 up-regulates MMP3 expression by enriching 5hmC levels at the MMP3 promoter via TET1 induction. These findings implicate TWIST1 as an important factor regulating OA related gene expression. Clarifying epigenetic mechanisms of 5hmC induced by TWIST1 is a critical molecule to understanding OA pathogenesis.
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Affiliation(s)
- Joe Hasei
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Takeshi Teramura
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA
- Division of Cell Biology for Regenerative Medicine, Institute of Advanced Clinical Medicine, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Toshiyuki Takehara
- Division of Cell Biology for Regenerative Medicine, Institute of Advanced Clinical Medicine, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Yuta Onodera
- Division of Cell Biology for Regenerative Medicine, Institute of Advanced Clinical Medicine, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Takuro Horii
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, Gunma, Japan
| | - Merissa Olmer
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Izuho Hatada
- Laboratory of Genome Science, Biosignal Genome Resource Center, Institute for Molecular and Cellular Regulation, Gunma University, Gunma, Japan
| | - Kanji Fukuda
- Division of Cell Biology for Regenerative Medicine, Institute of Advanced Clinical Medicine, Kindai University, Faculty of Medicine, Osaka, Japan
- Department of Rehabilitation Medicine, Kindai University, Faculty of Medicine, Osaka, Japan
| | - Toshifumi Ozaki
- Science of Functional Recovery and Reconstruction, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama, Japan
| | - Martin K. Lotz
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA
| | - Hiroshi Asahara
- Department of Molecular and Experimental Medicine, The Scripps Research Institute, La Jolla, CA, USA
- Department of Systems BioMedicine, Graduate School of Medical and Dental Sciences, Tokyo Medical and Dental University, Tokyo, Japan
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111
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Lattanzi W, Barba M, Di Pietro L, Boyadjiev SA. Genetic advances in craniosynostosis. Am J Med Genet A 2017; 173:1406-1429. [PMID: 28160402 DOI: 10.1002/ajmg.a.38159] [Citation(s) in RCA: 66] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Revised: 12/30/2016] [Accepted: 01/06/2017] [Indexed: 12/22/2022]
Abstract
Craniosynostosis, the premature ossification of one or more skull sutures, is a clinically and genetically heterogeneous congenital anomaly affecting approximately one in 2,500 live births. In most cases, it occurs as an isolated congenital anomaly, that is, nonsyndromic craniosynostosis (NCS), the genetic, and environmental causes of which remain largely unknown. Recent data suggest that, at least some of the midline NCS cases may be explained by two loci inheritance. In approximately 25-30% of patients, craniosynostosis presents as a feature of a genetic syndrome due to chromosomal defects or mutations in genes within interconnected signaling pathways. The aim of this review is to provide a detailed and comprehensive update on the genetic and environmental factors associated with NCS, integrating the scientific findings achieved during the last decade. Focus on the neurodevelopmental, imaging, and treatment aspects of NCS is also provided.
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Affiliation(s)
- Wanda Lattanzi
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore, Rome, Italy.,Latium Musculoskeletal Tıssue Bank, Rome, Italy
| | - Marta Barba
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Lorena Di Pietro
- Institute of Anatomy and Cell Biology, Università Cattolica del Sacro Cuore, Rome, Italy
| | - Simeon A Boyadjiev
- Division of Genomic Medicine, Department of Pediatrics, Davis Medical Center, University of California, Sacramento, California
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Taylor GM, Cooper GM, Losee JE, Mooney MP, Gilbert J. Molecular Analysis of Ephrin A4 and Ephrin B1 in a Rabbit Model of Craniosynostosis: Likely Exclusion as the Loci of Origin. Cleft Palate Craniofac J 2017; 55:1020-1025. [PMID: 28135115 DOI: 10.1597/16-135] [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] [Indexed: 11/22/2022] Open
Abstract
Craniosynostosis (CS) has a prevalence of approximately 1 in every 2000 live births and is characterized by the premature fusion of one or more cranial sutures. Failure to maintain the cell lineage boundary at the coronal suture is thought to be involved in the pathology of some forms of CS. The Ephrin family of receptor tyrosine kinases consists of membrane-bound receptors and ligands that control cell patterning and the formation of developmental boundaries. Mutations in the ephrin A4 (EFNA4) and ephrin B1 (EFNB1) ligands have been linked to nonsyndromic CS and craniofrontonasal syndrome, respectively, in patient samples. We have previously described a colony of rabbits with a heritable pattern of coronal suture synostosis, although the genetic basis for synostosis within this model remains unknown. The present study was performed to determine if EFNA4 or EFNB1 could be the loci of the causal mutation in this unique animal model. Sequencing of EFNA4 and EFNB1 was performed using templates obtained from wild-type (n = 4) and craniosynostotic (n = 4) rabbits. No structural coding errors were identified in either gene. A single-nucleotide transversion was identified in one wild-type rabbit within the third intron of EFNA4. These data indicate that the causal locus for heritable CS in this rabbit model is not located within the structural coding regions of either EFNA4 or EFNB1.
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113
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Vesuna F, Bergman Y, Raman V. Genomic pathways modulated by Twist in breast cancer. BMC Cancer 2017; 17:52. [PMID: 28086829 PMCID: PMC5237254 DOI: 10.1186/s12885-016-3033-3] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 12/13/2016] [Indexed: 02/06/2023] Open
Abstract
Background The basic helix-loop-helix transcription factor TWIST1 (Twist) is involved in embryonic cell lineage determination and mesodermal differentiation. There is evidence to indicate that Twist expression plays a role in breast tumor formation and metastasis, but the role of Twist in dysregulating pathways that drive the metastatic cascade is unclear. Moreover, many of the genes and pathways dysregulated by Twist in cell lines and mouse models have not been validated against data obtained from larger, independant datasets of breast cancer patients. Methods We over-expressed the human Twist gene in non-metastatic MCF-7 breast cancer cells to generate the estrogen-independent metastatic breast cancer cell line MCF-7/Twist. These cells were inoculated in the mammary fat pad of female severe compromised immunodeficient mice, which subsequently formed xenograft tumors that metastasized to the lungs. Microarray data was collected from both in vitro (MCF-7 and MCF-7/Twist cell lines) and in vivo (primary tumors and lung metastases) models of Twist expression. Our data was compared to several gene datasets of various subtypes, classes, and grades of human breast cancers. Results Our data establishes a Twist over-expressing mouse model of breast cancer, which metastasizes to the lung and replicates some of the ontogeny of human breast cancer progression. Gene profiling data, following Twist expression, exhibited novel metastasis driver genes as well as cellular maintenance genes that were synonymous with the metastatic process. We demonstrated that the genes and pathways altered in the transgenic cell line and metastatic animal models parallel many of the dysregulated gene pathways observed in human breast cancers. Conclusions Analogous gene expression patterns were observed in both in vitro and in vivo Twist preclinical models of breast cancer metastasis and breast cancer patient datasets supporting the functional role of Twist in promoting breast cancer metastasis. The data suggests that genetic dysregulation of Twist at the cellular level drives alterations in gene pathways in the Twist metastatic mouse model which are comparable to changes seen in human breast cancers. Lastly, we have identified novel genes and pathways that could be further investigated as targets for drugs to treat metastatic breast cancer. Electronic supplementary material The online version of this article (doi:10.1186/s12885-016-3033-3) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Farhad Vesuna
- Division of Cancer Imaging Research, Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA.
| | - Yehudit Bergman
- Division of Cancer Imaging Research, Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA
| | - Venu Raman
- Division of Cancer Imaging Research, Department of Radiology, Johns Hopkins University School of Medicine, Baltimore, MD, 21205, USA. .,Department of Oncology, Johns Hopkins University School of Medicine, Baltimore, MD, 21287, USA. .,Department of Pathology, University Medical Center Utrecht, Utrecht, The Netherlands.
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114
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Camp E, Anderson PJ, Zannettino ACW, Gronthos S. Tyrosine kinase receptor c-ros-oncogene 1 mediates TWIST-1 regulation of human mesenchymal stem cell lineage commitment. Bone 2017; 94:98-107. [PMID: 27669657 DOI: 10.1016/j.bone.2016.09.019] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2016] [Revised: 08/24/2016] [Accepted: 09/22/2016] [Indexed: 10/21/2022]
Abstract
The TWIST-1 gene encodes a basic helix-loop-helix (bHLH) transcription factor important in mediating skeletal and head mesodermal tissue development. Bone marrow-derived mesenchymal stem/stromal cells (BMSC), express high levels of TWIST-1, which is down regulated during ex vivo expansion. Cultured BMSC over-expressing TWIST-1 display decreased capacity for osteogenic differentiation and an enhanced capacity to undergo adipogenesis, suggesting that TWIST-1 is a mediator of lineage commitment. However, little is known regarding the mechanism(s) by which TWIST-1 mediates cell fate determination. In this study, microarray analysis was used to identify a novel downstream TWIST-1 target, tyrosine kinase receptor c-ros-oncogene 1 (C-ROS-1), which was down regulated in TWIST-1 over-expressing BMSC. Chromatin immunoprecipitation analysis showed that TWIST-1 directly bound to two E-box binding sites on the proximal C-ROS-1 promoter. Knock-down of C-ROS-1 in human BMSC and cranial bone cells resulted in a decreased capacity for osteogenic differentiation in vitro. Conversely, suppression of C-ROS-1 in BMSC resulted in an enhanced capacity to undergo adipogenesis. Furthermore, reduced C-ROS-1 levels led to activation of different components of the PI3K/AKT/mTORC1 signalling pathway during osteogenic and adipogenic differentiation. Collectively, these data suggest that C-ROS-1 is involved in BMSC fate switching between osteogenesis and adipogenesis, mediated via PI3K/AKT/mTORC1 signalling.
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Affiliation(s)
- Esther Camp
- Mesenchymal Stem Cell Laboratory, Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, South Australia, Australia; Cancer Theme, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia
| | - Peter J Anderson
- Australian Craniofacial Unit, Women's and Children's Hospital, North Adelaide, South Australia, Australia
| | - Andrew C W Zannettino
- Cancer Theme, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia; Myeloma Research Laboratory, Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, South Australia, Australia
| | - Stan Gronthos
- Mesenchymal Stem Cell Laboratory, Adelaide Medical School, Faculty of Health and Medical Sciences, University of Adelaide, Adelaide, South Australia, Australia; Cancer Theme, South Australian Health and Medical Research Institute, Adelaide, South Australia, Australia.
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Miller KA, Twigg SRF, McGowan SJ, Phipps JM, Fenwick AL, Johnson D, Wall SA, Noons P, Rees KEM, Tidey EA, Craft J, Taylor J, Taylor JC, Goos JAC, Swagemakers SMA, Mathijssen IMJ, van der Spek PJ, Lord H, Lester T, Abid N, Cilliers D, Hurst JA, Morton JEV, Sweeney E, Weber A, Wilson LC, Wilkie AOM. Diagnostic value of exome and whole genome sequencing in craniosynostosis. J Med Genet 2016; 54:260-268. [PMID: 27884935 PMCID: PMC5366069 DOI: 10.1136/jmedgenet-2016-104215] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2016] [Revised: 09/26/2016] [Accepted: 10/19/2016] [Indexed: 12/20/2022]
Abstract
Background Craniosynostosis, the premature fusion of one or more cranial sutures, occurs in ∼1 in 2250 births, either in isolation or as part of a syndrome. Mutations in at least 57 genes have been associated with craniosynostosis, but only a minority of these are included in routine laboratory genetic testing. Methods We used exome or whole genome sequencing to seek a genetic cause in a cohort of 40 subjects with craniosynostosis, selected by clinical or molecular geneticists as being high-priority cases, and in whom prior clinically driven genetic testing had been negative. Results We identified likely associated mutations in 15 patients (37.5%), involving 14 different genes. All genes were mutated in single families, except for IL11RA (two families). We classified the other positive diagnoses as follows: commonly mutated craniosynostosis genes with atypical presentation (EFNB1, TWIST1); other core craniosynostosis genes (CDC45, MSX2, ZIC1); genes for which mutations are only rarely associated with craniosynostosis (FBN1, HUWE1, KRAS, STAT3); and known disease genes for which a causal relationship with craniosynostosis is currently unknown (AHDC1, NTRK2). In two further families, likely novel disease genes are currently undergoing functional validation. In 5 of the 15 positive cases, the (previously unanticipated) molecular diagnosis had immediate, actionable consequences for either genetic or medical management (mutations in EFNB1, FBN1, KRAS, NTRK2, STAT3). Conclusions This substantial genetic heterogeneity, and the multiple actionable mutations identified, emphasises the benefits of exome/whole genome sequencing to identify causal mutations in craniosynostosis cases for which routine clinical testing has yielded negative results.
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Affiliation(s)
- Kerry A Miller
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Stephen R F Twigg
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Simon J McGowan
- Computational Biology Research Group, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - Julie M Phipps
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK.,Department of Clinical Genetics, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Aimée L Fenwick
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK
| | - David Johnson
- Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Steven A Wall
- Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Peter Noons
- Department of Craniofacial Surgery, Birmingham Children's Hospital NHS Foundation Trust, Birmingham, UK
| | - Katie E M Rees
- North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Elizabeth A Tidey
- North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Judith Craft
- Oxford Medical Genetics Laboratories, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - John Taylor
- Oxford Medical Genetics Laboratories, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Jenny C Taylor
- Oxford Biomedical Research Centre, National Institute for Health Research, Oxford, UK.,Wellcome Trust Centre for Human Genetics, University of Oxford, Oxford, UK
| | - Jacqueline A C Goos
- Department of Plastic and Reconstructive Surgery and Hand Surgery, Erasmus Medical Centre, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Sigrid M A Swagemakers
- Department of Bioinformatics, Erasmus Medical Centre, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Irene M J Mathijssen
- Department of Plastic and Reconstructive Surgery and Hand Surgery, Erasmus Medical Centre, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Peter J van der Spek
- Department of Bioinformatics, Erasmus Medical Centre, University Medical Centre Rotterdam, Rotterdam, The Netherlands
| | - Helen Lord
- Oxford Medical Genetics Laboratories, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Tracy Lester
- Oxford Medical Genetics Laboratories, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Noina Abid
- Department of Paediatric Endocrinology, The Royal Belfast Hospital for Sick Children, Belfast, UK
| | - Deirdre Cilliers
- Department of Clinical Genetics, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.,Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Jane A Hurst
- North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Jenny E V Morton
- Clinical Genetics Unit, Birmingham Women's Hospital NHS Foundation Trust, Birmingham, UK
| | - Elizabeth Sweeney
- Department of Clinical Genetics, Liverpool Women's NHS Foundation Trust, Liverpool, UK
| | - Astrid Weber
- Department of Clinical Genetics, Liverpool Women's NHS Foundation Trust, Liverpool, UK
| | - Louise C Wilson
- North East Thames Regional Genetics Service, Great Ormond Street Hospital for Children NHS Foundation Trust, London, UK
| | - Andrew O M Wilkie
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, Oxford, UK.,Department of Clinical Genetics, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.,Craniofacial Unit, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
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Bosch PJ, Fuller LC, Sleeth CM, Weiner JA. Akirin2 is essential for the formation of the cerebral cortex. Neural Dev 2016; 11:21. [PMID: 27871306 PMCID: PMC5117564 DOI: 10.1186/s13064-016-0076-8] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 11/10/2016] [Indexed: 12/22/2022] Open
Abstract
Background The proper spatial and temporal regulation of dorsal telencephalic progenitor behavior is a prerequisite for the formation of the highly-organized, six-layered cerebral cortex. Premature differentiation of cells, disruption of cell cycle timing, excessive apoptosis, and/or incorrect neuronal migration signals can have devastating effects, resulting in a number of neurodevelopmental disorders involving microcephaly and/or lissencephaly. Though genes encoding many key players in cortical development have been identified, our understanding remains incomplete. We show that the gene encoding Akirin2, a small nuclear protein, is expressed in the embryonic telencephalon. Converging evidence indicates that Akirin2 acts as a bridge between transcription factors (including Twist and NF-κB proteins) and the BAF (SWI/SNF) chromatin remodeling machinery to regulate patterns of gene expression. Constitutive knockout of Akirin2 is early embryonic lethal in mice, while restricted loss in B cells led to disrupted proliferation and cell survival. Methods We generated cortex-restricted Akirin2 knockouts by crossing mice harboring a floxed Akirin2 allele with the Emx1-Cre transgenic line and assessed the resulting embryos using in situ hybridization, EdU labeling, and immunohistochemistry. Results The vast majority of Akirin2 mutants do not survive past birth, and exhibit extreme microcephaly, with little dorsal telencephalic tissue and no recognizable cortex. This is primarily due to massive cell death of early cortical progenitors, which begins at embryonic day (E)10, shortly after Emx1-Cre is active. Immunostaining and cell cycle analysis using EdU labeling indicate that Akirin2-null progenitors fail to proliferate normally, produce fewer neurons, and undergo extensive apoptosis. All of the neurons that are generated in Akirin2 mutants also undergo apoptosis by E12. In situ hybridization for Wnt3a and Wnt-responsive genes suggest defective formation and/or function of the cortical hem in Akirin2 null mice. Furthermore, the apical ventricular surface becomes disrupted, and Sox2-positive progenitors are found to “spill” into the lateral ventricle. Conclusions Our data demonstrate a previously-unsuspected role for Akirin2 in early cortical development and, given its known nuclear roles, suggest that it may act to regulate gene expression patterns critical for early progenitor cell behavior and cortical neuron production. Electronic supplementary material The online version of this article (doi:10.1186/s13064-016-0076-8) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Peter J Bosch
- Department of Biology, The University of Iowa, Iowa City, IA, USA
| | - Leah C Fuller
- Department of Biology, The University of Iowa, Iowa City, IA, USA
| | - Carolyn M Sleeth
- Department of Biology, The University of Iowa, Iowa City, IA, USA
| | - Joshua A Weiner
- Department of Biology and Department of Psychiatry, The University of Iowa, 143 Biology Building, Iowa City, IA, 52242, USA.
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118
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Werren JH, Cohen LB, Gadau J, Ponce R, Baudry E, Lynch JA. Dissection of the complex genetic basis of craniofacial anomalies using haploid genetics and interspecies hybrids in Nasonia wasps. Dev Biol 2016; 415:391-405. [PMID: 26721604 PMCID: PMC4914427 DOI: 10.1016/j.ydbio.2015.12.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2015] [Revised: 11/13/2015] [Accepted: 12/21/2015] [Indexed: 11/25/2022]
Abstract
The animal head is a complex structure where numerous sensory, structural and alimentary structures are concentrated and integrated, and its ontogeny requires precise and delicate interactions among genes, cells, and tissues. Thus, it is perhaps unsurprising that craniofacial abnormalities are among the most common birth defects in people, or that these defects have a complex genetic basis involving interactions among multiple loci. Developmental processes that depend on such epistatic interactions become exponentially more difficult to study in diploid organisms as the number of genes involved increases. Here, we present hybrid haploid males of the wasp species pair Nasonia vitripennis and Nasonia giraulti, which have distinct male head morphologies, as a genetic model of craniofacial development that possesses the genetic advantages of haploidy, along with many powerful genomic tools. Viable, fertile hybrids can be made between the species, and quantitative trail loci related to shape differences have been identified. In addition, a subset of hybrid males show head abnormalities, including clefting at the midline and asymmetries. Crucially, epistatic interactions among multiple loci underlie several developmental differences and defects observed in the F2 hybrid males. Furthermore, we demonstrate an introgression of a chromosomal region from N. giraulti into N. vitripennis that shows an abnormality in relative eye size, which maps to a region containing a major QTL for this trait. Therefore, the genetic sources of head morphology can, in principle, be identified by positional cloning. Thus, Nasonia is well positioned to be a uniquely powerful model invertebrate system with which to probe both development and complex genetics of craniofacial patterning and defects.
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Affiliation(s)
- John H Werren
- Department of Biology, University of Rochester, Rochester, NY 14627, United States.
| | - Lorna B Cohen
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, United States
| | - Juergen Gadau
- School of Life Sciences, Arizona State University, Tempe, AZ 85285, United States
| | - Rita Ponce
- Department of Biology, University of Rochester, Rochester, NY 14627, United States
| | - Emmanuelle Baudry
- Department of Biology, University of Rochester, Rochester, NY 14627, United States; Ecologie Systématique Evolution, Univ. Paris-Sud, CNRS, AgroParisTech, Université Paris-Saclay, 91400 Orsay, France
| | - Jeremy A Lynch
- Department of Biological Sciences, University of Illinois at Chicago, Chicago, IL 60607, United States.
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Tripartite motif containing 28 (TRIM28) promotes breast cancer metastasis by stabilizing TWIST1 protein. Sci Rep 2016; 6:29822. [PMID: 27412325 PMCID: PMC4944148 DOI: 10.1038/srep29822] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2015] [Accepted: 06/27/2016] [Indexed: 12/16/2022] Open
Abstract
TRIM28 regulates its target genes at both transcriptional and posttranscriptional levels. Here we report that a TRIM28-TWIST1-EMT axis exists in breast cancer cells and TRIM28 promotes breast cancer metastasis by stabilizing TWIST1 and subsequently enhancing EMT. We find that TRIM28 is highly expressed in both cancer cell lines and advanced breast cancer tissues, and the levels of TRIM28 and TWIST1 are positively correlated with the aggressiveness of breast carcinomas. Overexpression and depletion of TRIM28 up- and down-regulates the protein, but not the mRNA levels of TWIST1, respectively, suggesting that TRIM28 upregulates TWIST1 post-transcriptionally. Overexpression of TRIM28 in breast cancer cell line promotes cell migration and invasion. Knockdown of TRIM28 reduces the protein level of TWIST1 with concurrent upregulation of E-cadherin and downregulation of N-cadherin and consequently inhibits cell migration and invasion. Furthermore, Immunoprecipitation and GST pull-down assays demonstrated that TRIM28 interacts with TWIST1 directly and this interaction is presumed to protect TWIST1 from degradation. Our study revealed a novel mechanism in breast cancer cells that TRIM28 enhances metastasis by stabilizing TWIST1, suggesting that targeting TRIM28 could be an efficacious strategy in breast cancer treatment.
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120
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Flaherty K, Singh N, Richtsmeier JT. Understanding craniosynostosis as a growth disorder. WILEY INTERDISCIPLINARY REVIEWS. DEVELOPMENTAL BIOLOGY 2016; 5:429-59. [PMID: 27002187 PMCID: PMC4911263 DOI: 10.1002/wdev.227] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Revised: 12/06/2015] [Accepted: 12/24/2015] [Indexed: 12/15/2022]
Abstract
Craniosynostosis is a condition of complex etiology that always involves the premature fusion of one or multiple cranial sutures and includes various anomalies of the soft and hard tissues of the head. Steady progress in the field has resulted in identifying gene mutations that recurrently cause craniosynostosis. There are now scores of mutations on many genes causally related to craniosynostosis syndromes, though the genetic basis for the majority of nonsyndromic cases is unknown. Identification of these genetic mutations has allowed significant progress in understanding the intrinsic properties of cranial sutures, including mechanisms responsible for normal suture patency and for pathogenesis of premature suture closure. An understanding of morphogenesis of cranial vault sutures is critical to understanding the pathophysiology of craniosynostosis conditions, but the field is now poised to recognize the repeated changes in additional skeletal and soft tissues of the head that typically accompany premature suture closure. We review the research that has brought an understanding of premature suture closure within our reach. We then enumerate the less well-studied, but equally challenging, nonsutural phenotypes of craniosynostosis conditions that are well characterized in available mouse models. We consider craniosynostosis as a complex growth disorder of multiple tissues of the developing head, whose growth is also targeted by identified mutations in ways that are poorly understood. Knowledge gained from studies of humans and mouse models for these conditions underscores the diverse, associated developmental anomalies of the head that contribute to the complex phenotypes of craniosynostosis conditions presenting novel challenges for future research. WIREs Dev Biol 2016, 5:429-459. doi: 10.1002/wdev.227 For further resources related to this article, please visit the WIREs website.
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Affiliation(s)
- Kevin Flaherty
- Department of Anthropology, Pennsylvania State University,
University Park, PA 16802
| | - Nandini Singh
- Department of Anthropology, Pennsylvania State University,
University Park, PA 16802
| | - Joan T. Richtsmeier
- Department of Anthropology, Pennsylvania State University,
University Park, PA 16802
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Bouard C, Terreux R, Honorat M, Manship B, Ansieau S, Vigneron AM, Puisieux A, Payen L. Deciphering the molecular mechanisms underlying the binding of the TWIST1/E12 complex to regulatory E-box sequences. Nucleic Acids Res 2016; 44:5470-89. [PMID: 27151200 PMCID: PMC4914114 DOI: 10.1093/nar/gkw334] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2016] [Accepted: 04/13/2016] [Indexed: 12/29/2022] Open
Abstract
The TWIST1 bHLH transcription factor controls embryonic development and cancer processes. Although molecular and genetic analyses have provided a wealth of data on the role of bHLH transcription factors, very little is known on the molecular mechanisms underlying their binding affinity to the E-box sequence of the promoter. Here, we used an in silico model of the TWIST1/E12 (TE) heterocomplex and performed molecular dynamics (MD) simulations of its binding to specific (TE-box) and modified E-box sequences. We focused on (i) active E-box and inactive E-box sequences, on (ii) modified active E-box sequences, as well as on (iii) two box sequences with modified adjacent bases the AT- and TA-boxes. Our in silico models were supported by functional in vitro binding assays. This exploration highlighted the predominant role of protein side-chain residues, close to the heart of the complex, at anchoring the dimer to DNA sequences, and unveiled a shift towards adjacent ((-1) and (-1*)) bases and conserved bases of modified E-box sequences. In conclusion, our study provides proof of the predictive value of these MD simulations, which may contribute to the characterization of specific inhibitors by docking approaches, and their use in pharmacological therapies by blocking the tumoral TWIST1/E12 function in cancers.
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Affiliation(s)
- Charlotte Bouard
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France LabEX DEVweCAN, Lyon, France UNIV UMR1052, Lyon 69008, France Centre Léon Bérard, Lyon 69373, France Université de Lyon1, ISPB, Lyon 69008, France
| | - Raphael Terreux
- Université de Lyon1, ISPB, Lyon 69008, France Institut de Biochimie des protéines IBCP, Lyon 69007, France CNRS UMR 5305, Lyon 69007, France
| | - Mylène Honorat
- Institut de Biochimie des protéines IBCP, Lyon 69007, France
| | | | - Stéphane Ansieau
- CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France LabEX DEVweCAN, Lyon, France UNIV UMR1052, Lyon 69008, France Centre Léon Bérard, Lyon 69373, France
| | - Arnaud M Vigneron
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France LabEX DEVweCAN, Lyon, France UNIV UMR1052, Lyon 69008, France Centre Léon Bérard, Lyon 69373, France
| | - Alain Puisieux
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France LabEX DEVweCAN, Lyon, France UNIV UMR1052, Lyon 69008, France Centre Léon Bérard, Lyon 69373, France Université de Lyon1, ISPB, Lyon 69008, France Institut Universitaire de France, Paris 75231, France
| | - Léa Payen
- Inserm UMR-S1052, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France CNRS UMR5286, Centre de Recherche en Cancérologie de Lyon, Lyon 69373, France LabEX DEVweCAN, Lyon, France UNIV UMR1052, Lyon 69008, France Centre Léon Bérard, Lyon 69373, France Université de Lyon1, ISPB, Lyon 69008, France Hospices Civils de Lyon, Laboratoire de Biochimie et Biologie Moléculaire du CHLS, Lyon 69003, France
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Katsianou MA, Adamopoulos C, Vastardis H, Basdra EK. Signaling mechanisms implicated in cranial sutures pathophysiology: Craniosynostosis. BBA CLINICAL 2016; 6:165-176. [PMID: 27957430 PMCID: PMC5144105 DOI: 10.1016/j.bbacli.2016.04.006] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/25/2016] [Revised: 04/19/2016] [Accepted: 04/27/2016] [Indexed: 01/19/2023]
Abstract
Normal extension and skull expansion is a synchronized process that prevails along the osteogenic intersections of the cranial sutures. Cranial sutures operate as bone growth sites allowing swift bone generation at the edges of the bone fronts while they remain patent. Premature fusion of one or more cranial sutures can trigger craniosynostosis, a birth defect characterized by dramatic manifestations in appearance and functional impairment. Up until today, surgical correction is the only restorative measure for craniosynostosis associated with considerable mortality. Clinical studies have identified several genes implicated in the pathogenesis of craniosynostosis syndromes with useful insights into the underlying molecular signaling events that determine suture fate. In this review, we exploit the intracellular signal transduction pathways implicated in suture pathobiology, in an attempt to identify key signaling molecules for therapeutic targeting. Cranial sutures operate as bone growth sites. Premature fusion of one or more cranial sutures can trigger craniosynostosis. Several genes are involved in the pathogenesis of craniosynostosis syndromes. An array of molecular signaling events determine suture fate. Herein, the signal transduction pathways implicated in suture pathobiology are discussed.
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Affiliation(s)
- Maria A Katsianou
- Department of Biological Chemistry - Cellular and Molecular Biomechanics Unit, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Christos Adamopoulos
- Department of Biological Chemistry - Cellular and Molecular Biomechanics Unit, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
| | - Heleni Vastardis
- Department of Orthodontics, Dental School, National and Kapodistrian University of Athens, 11527, Athens, Greece
| | - Efthimia K Basdra
- Department of Biological Chemistry - Cellular and Molecular Biomechanics Unit, Medical School, National and Kapodistrian University of Athens, 11527 Athens, Greece
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123
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Rottgers SA, Gallo P, Gilbert J, Macisaac Z, Cray J, Smith DM, Mooney MP, Losee J, Kathju S, Cooper G. Application of Laser Capture Microdissection to Craniofacial Biology: Characterization of Anatomically Relevant Gene Expression in Normal and Craniosynostotic Rabbit Sutures. Cleft Palate Craniofac J 2016; 54:109-118. [PMID: 26954032 DOI: 10.1597/15-114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVE Fusion of the cranial sutures is thought to depend on signaling among perisutural tissues. Mapping regional variations in gene expression would improve current models of craniosynostosis. Laser capture microdissection (LCM) isolates discrete cell populations for gene expression analysis. LCM has rarely been used in the study of mineralized tissue. This study sought to evaluate the potential use of LCM for mapping of regional gene expression within the cranial suture. DESIGN Coronal sutures were isolated from 10-day-old wild-type and craniosynostotic (CS) New Zealand White rabbits, and LCM was used to isolate RNA from the sutural ligament (SL), osteogenic fronts (OF), dura mater, and periosteum. Relative expression levels for Fibroblast Growth Factor 2 (FGF2), Fibroblast Growth Factor Receptor 2 (FGFR2), Transforming Growth Factor Beta 2 (TGFβ-2), Transforming Growth Factor Beta 3 (TGFβ-3), Bone Morphogenetic Protein 2 (BMP-2), Bone Morphogenetic Protein 4 (BMP-4), and Noggin were determined using quantitative real-time PCR. RESULTS A fivefold increase in TGFβ2 expression was detected in the CS SL relative to wild type, whereas 152-fold less TGFβ-3 was detected within the OF of CS animals. Noggin expression was increased by 10-fold within the CS SL, but reduced by 13-fold within the CS dura. Reduced expression of FGF2 was observed within the CS SL and dura, whereas increased expression of FGFR2 was observed within the CS SL. Reduced expression of BMP-2 was observed in the CS periosteum, and elevated expression of BMP-4 was observed in the CS SL and dura. CONCLUSIONS LCM provides an effective tool for measuring regional variations in cranial suture gene expression. More precise measurements of regional gene expression with LCM may facilitate efforts to correlate gene expression with suture morphogenesis and pathophysiology.
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New Pattern of Sutural Synostosis Associated With TWIST Gene Mutation and Saethre-Chotzen Syndrome: Peace Sign Synostosis. J Craniofac Surg 2016; 26:1564-7. [PMID: 26114524 DOI: 10.1097/scs.0000000000001884] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The authors present a new and unique pattern of sutural fusion "peace sign synostosis" (PSS) characterized by synostosis of the metopic, bicoronal, and sagittal sutures and associated with abnormalities of the TWIST1 gene known to be associated with Saethre-Chotzen syndrome (SCS). To do so, we performed a retrospective review of patients with bicoronal, metopic, and at least partial anterior sagittal synostoses at the Children's Hospital of Philadelphia and Seattle Children's Hospital. Patients' demographics, genetic analysis, perioperative and clinic notes were reviewed. Five patients were identified with PSS and abnormalities of TWIST1 consistent with SCS. One patient, with the longest follow-up of 7 years, underwent 5 intracranial procedures and required a ventriculoperitoneal (VP) shunt. The remaining 4 patients underwent posterior cranial vault distraction as the initial procedure, followed by anterior cranial vault remodeling. Two patients required a VP shunt. To conclude, synostosis of the metopic, bicoronal, and sagittal sutures (PSS) appears to be associated with SCS and produces a characteristic skull morphology that can be readily identified on physical examination. Early data suggest a high rate of reoperation, increased necessity for a VP shunt, and potential complications. Of note, this novel phenotype had not been previously observed at our respective institutions, reported in the literature, or observed in association with TWIST1 abnormalities as described in association with SCS.
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125
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Quarto N, Senarath-Yapa K, Renda A, Longaker MT. TWIST1 silencing enhances in vitro and in vivo osteogenic differentiation of human adipose-derived stem cells by triggering activation of BMP-ERK/FGF signaling and TAZ upregulation. Stem Cells 2015; 33:833-47. [PMID: 25446627 DOI: 10.1002/stem.1907] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2014] [Revised: 10/06/2014] [Accepted: 10/15/2014] [Indexed: 01/10/2023]
Abstract
Mesenchymal stem cells (MSCs) show promise for cellular therapy and regenerative medicine. Human adipose tissue-derived stem cells (hASCs) represent an attractive source of seed cells in bone regeneration. How to effectively improve osteogenic differentiation of hASCs in the bone tissue engineering has become a very important question with profound translational implications. Numerous regulatory pathways dominate osteogenic differentiation of hASCs involving transcriptional factors and signaling molecules. However, how these factors combine with each other to regulate hASCs osteogenic differentiation still remains to be illustrated. The highly conserved developmental proteins TWIST play key roles for transcriptional regulation in mesenchymal cell lineages. This study investigates TWIST1 function in hASCs osteogenesis. Our results show that TWIST1 shRNA silencing increased the osteogenic potential of hASCs in vitro and their skeletal regenerative ability when applied in vivo. We demonstrate that the increased osteogenic capacity observed with TWIST1 knockdown in hASCs is mediated through endogenous activation of BMP and ERK/FGF signaling leading, in turn, to upregulation of TAZ, a transcriptional modulator of MSCs differentiation along the osteoblast lineage. Inhibition either of BMP or ERK/FGF signaling suppressed TAZ upregulation and the enhanced osteogenesis in shTWIST1 hASCs. Cosilencing of both TWIST1 and TAZ abrogated the effect elicited by TWIST1 knockdown thus, identifying TAZ as a downstream mediator through which TWIST1 knockdown enhanced osteogenic differentiation in hASCs. Our functional study contributes to a better knowledge of molecular mechanisms governing the osteogenic ability of hASCs, and highlights TWIST1 as a potential target to facilitate in vivo bone healing.
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Affiliation(s)
- Natalina Quarto
- Hagey Laboratory for Pediatric Regenerative Medicine, Department of Surgery, Stanford University, School of Medicine, Stanford, California, USA; Dipartimento di Scienze Biomediche Avanzate, Universita' degli Studi di Napoli Federico II, Napoli, Italy
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126
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Deng X, Pan H, Wang J, Wang B, Cheng Z, Cheng L, Zhao L, Li H, Ma X. Functional Analysis of Two Novel Mutations in TWIST1 Protein Motifs Found in Ventricular Septal Defect Patients. Pediatr Cardiol 2015; 36:1602-9. [PMID: 25981568 DOI: 10.1007/s00246-015-1202-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2015] [Accepted: 05/07/2015] [Indexed: 10/23/2022]
Abstract
The aim of this study was to investigate the possible genetic effect of sequence variations in TWIST1 on the pathogenesis of ventricular septal defect in humans. We examined the coding region of TWIST1 in a cohort of 196 Chinese people with non-syndromic ventricular septal defect patients and 200 healthy individuals as the controls. We identified two novel potential disease-associated mutations, NM_000474.3:c.247G>A (G83S) and NM_000474.3:c.283A>G (S95G). Both of them were identified for the first time and were not observed in the 200 controls without congenital heart disease. Using a dual-luciferase reporter assay, we showed that both of the mutations significantly down-regulated the repressive effect of TWIST1 on the E-cadherin promoter. Furthermore, a mammalian two-hybrid assay showed that both of the mutations significantly affected the interaction between TWIST1 and KAT2B. New mutations in the transcription factor TWIST1 that affect protein function were identified in 1.0 % (2/196) of Chinese patients with ventricular septal defect. Our data show, for the first time, that TWIST1 has a potential causative effect on the development of ventricular septal defect.
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Affiliation(s)
- Xiaopeng Deng
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No.36, Sanhao Street, Heping District, Shenyang, 110004, China
| | - Hong Pan
- Graduate School, Peking Union Medical College, Beijing, 100080, China.,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China
| | - Jing Wang
- Graduate School, Peking Union Medical College, Beijing, 100080, China.,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China
| | - Binbin Wang
- Graduate School, Peking Union Medical College, Beijing, 100080, China.,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China
| | - Zhi Cheng
- Graduate School, Peking Union Medical College, Beijing, 100080, China.,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China
| | - Longfei Cheng
- Graduate School, Peking Union Medical College, Beijing, 100080, China.,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China
| | - Lixi Zhao
- Graduate School, Peking Union Medical College, Beijing, 100080, China.,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China
| | - Hui Li
- Department of Obstetrics and Gynecology, Shengjing Hospital of China Medical University, No.36, Sanhao Street, Heping District, Shenyang, 110004, China.
| | - Xu Ma
- Graduate School, Peking Union Medical College, Beijing, 100080, China. .,Center for Genetics, National Research Institute for Family Planning, 12 Dahuisi Road, Haidian, Beijing, 100081, China. .,World Health Organization Collaborating Centre for Research in Human Reproduction, Beijing, 100081, China.
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127
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Liskova P, Evans CJ, Davidson AE, Zaliova M, Dudakova L, Trkova M, Stranecky V, Carnt N, Plagnol V, Vincent AL, Tuft SJ, Hardcastle AJ. Heterozygous deletions at the ZEB1 locus verify haploinsufficiency as the mechanism of disease for posterior polymorphous corneal dystrophy type 3. Eur J Hum Genet 2015; 24:985-91. [PMID: 26508574 DOI: 10.1038/ejhg.2015.232] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2015] [Revised: 09/25/2015] [Accepted: 09/30/2015] [Indexed: 11/09/2022] Open
Abstract
A substantial proportion of patients with posterior polymorphous corneal dystrophy (PPCD) lack a molecular diagnosis. We evaluated 14 unrelated probands who had a clinical diagnosis of PPCD who were previously determined to be negative for mutations in ZEB1 by direct sequencing. A combination of techniques was used including whole-exome sequencing (WES), single-nucleotide polymorphism (SNP) array copy number variation (CNV) analysis, quantitative real-time PCR, and long-range PCR. Segregation of potentially pathogenic changes with disease was confirmed, where possible, in family members. A putative run of homozygosity on chromosome 10 was identified by WES in a three-generation PPCD family, suggestive of a heterozygous deletion. SNP array genotyping followed by long-range PCR and direct sequencing to define the breakpoints confirmed the presence of a large deletion that encompassed multiple genes, including ZEB1. Identification of a heterozygous deletion spanning ZEB1 prompted us to further investigate potential CNVs at this locus in the remaining probands, leading to detection of two additional heterozygous ZEB1 gene deletions. This study demonstrates that ZEB1 mutations account for a larger proportion of PPCD than previously estimated, and supports the hypothesis that haploinsufficiency of ZEB1 is the underlying molecular mechanism of disease for PPCD3.
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Affiliation(s)
- Petra Liskova
- Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague and General University Hospital, Prague, Czech Republic.,Department of Ophthalmology, First Faculty of Medicine, Charles University in Prague and General University Hospital, Prague, Czech Republic
| | | | | | - Marketa Zaliova
- Department of Pediatric Hematology and Oncology, Second Faculty of Medicine, University Hospital Motol, Charles University in Prague, Prague, Czech Republic
| | - Lubica Dudakova
- Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague and General University Hospital, Prague, Czech Republic
| | - Marie Trkova
- Gennet, Centre for Fetal Medicine and Reproductive Genetics, Prague, Czech Republic
| | - Viktor Stranecky
- Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University in Prague and General University Hospital, Prague, Czech Republic
| | - Nicole Carnt
- UCL Institute of Ophthalmology, London, UK.,Moorfields Eye Hospital, London, UK
| | | | - Andrea L Vincent
- Department of Ophthalmology, New Zealand National Eye Centre, Faculty of Medical and Health Sciences, University of Auckland, Auckland, New Zealand.,Eye Department, Greenlane Clinical Centre, Auckland District Health Board, Auckland, New Zealand
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128
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Twigg SRF, Wilkie AOM. New insights into craniofacial malformations. Hum Mol Genet 2015; 24:R50-9. [PMID: 26085576 PMCID: PMC4571997 DOI: 10.1093/hmg/ddv228] [Citation(s) in RCA: 99] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2015] [Accepted: 06/15/2015] [Indexed: 12/13/2022] Open
Abstract
Development of the human skull and face is a highly orchestrated and complex three-dimensional morphogenetic process, involving hundreds of genes controlling the coordinated patterning, proliferation and differentiation of tissues having multiple embryological origins. Craniofacial malformations that occur because of abnormal development (including cleft lip and/or palate, craniosynostosis and facial dysostoses), comprise over one-third of all congenital birth defects. High-throughput sequencing has recently led to the identification of many new causative disease genes and functional studies have clarified their mechanisms of action. We present recent findings in craniofacial genetics and discuss how this information together with developmental studies in animal models is helping to increase understanding of normal craniofacial development.
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Affiliation(s)
- Stephen R F Twigg
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Andrew O M Wilkie
- Clinical Genetics Group, Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
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129
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Gou Y, Zhang T, Xu J. Transcription Factors in Craniofacial Development: From Receptor Signaling to Transcriptional and Epigenetic Regulation. Curr Top Dev Biol 2015; 115:377-410. [PMID: 26589933 DOI: 10.1016/bs.ctdb.2015.07.009] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Craniofacial morphogenesis is driven by spatial-temporal terrains of gene expression, which give rise to stereotypical pattern formation. Transcription factors are key cellular components that control these gene expressions. They are information hubs that integrate inputs from extracellular factors and environmental cues, direct epigenetic modifications, and define transcriptional status. These activities allow transcription factors to confer specificity and potency to transcription regulation during development.
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Affiliation(s)
- Yongchao Gou
- State Key Laboratory of Oral Diseases, Department of Orthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China; Center for Craniofacial Molecular Biology, School of Dentistry, University of Southern California, Los Angeles, USA
| | - Tingwei Zhang
- Center for Craniofacial Molecular Biology, School of Dentistry, University of Southern California, Los Angeles, USA; State Key Laboratory of Oral Diseases, Department of Prosthodontics, West China Hospital of Stomatology, Sichuan University, Chengdu, China
| | - Jian Xu
- Center for Craniofacial Molecular Biology, School of Dentistry, University of Southern California, Los Angeles, USA.
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130
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The Development of the Calvarial Bones and Sutures and the Pathophysiology of Craniosynostosis. Curr Top Dev Biol 2015; 115:131-56. [PMID: 26589924 DOI: 10.1016/bs.ctdb.2015.07.004] [Citation(s) in RCA: 59] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
The skull vault is a complex, exquisitely patterned structure that plays a variety of key roles in vertebrate life, ranging from the acquisition of food to the support of the sense organs for hearing, smell, sight, and taste. During its development, it must meet the dual challenges of protecting the brain and accommodating its growth. The bones and sutures of the skull vault are derived from cranial neural crest and head mesoderm. The frontal and parietal bones develop from osteogenic rudiments in the supraorbital ridge. The coronal suture develops from a group of Shh-responsive cells in the head mesoderm that are collocated, with the osteogenic precursors, in the supraorbital ridge. The osteogenic rudiments and the prospective coronal suture expand apically by cell migration. A number of congenital disorders affect the skull vault. Prominent among these is craniosynostosis, the fusion of the bones at the sutures. Analysis of the pathophysiology underling craniosynostosis has identified a variety of cellular mechanisms, mediated by a range of signaling pathways and effector transcription factors. These cellular mechanisms include loss of boundary integrity, altered sutural cell specification in embryos, and loss of a suture stem cell population in adults. Future work making use of genome-wide transcriptomic approaches will address the deep structure of regulatory interactions and cellular processes that unify these seemingly diverse mechanisms.
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131
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Gajula RP, Chettiar ST, Williams RD, Nugent K, Kato Y, Wang H, Malek R, Taparra K, Cades J, Annadanam A, Yoon AR, Fertig E, Firulli BA, Mazzacurati L, Burns TF, Firulli AB, An SS, Tran PT. Structure-function studies of the bHLH phosphorylation domain of TWIST1 in prostate cancer cells. Neoplasia 2015; 17:16-31. [PMID: 25622896 PMCID: PMC4309734 DOI: 10.1016/j.neo.2014.10.009] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2014] [Revised: 10/23/2014] [Accepted: 10/27/2014] [Indexed: 01/02/2023] Open
Abstract
The TWIST1 gene has diverse roles in development and pathologic diseases such as cancer. TWIST1 is a dimeric basic helix-loop-helix (bHLH) transcription factor existing as TWIST1-TWIST1 or TWIST1-E12/47. TWIST1 partner choice and DNA binding can be influenced during development by phosphorylation of Thr125 and Ser127 of the Thr-Gln-Ser (TQS) motif within the bHLH of TWIST1. The significance of these TWIST1 phosphorylation sites for metastasis is unknown. We created stable isogenic prostate cancer cell lines overexpressing TWIST1 wild-type, phospho-mutants, and tethered versions. We assessed these isogenic lines using assays that mimic stages of cancer metastasis. In vitro assays suggested the phospho-mimetic Twist1-DQD mutation could confer cellular properties associated with pro-metastatic behavior. The hypo-phosphorylation mimic Twist1-AQA mutation displayed reduced pro-metastatic activity compared to wild-type TWIST1 in vitro, suggesting that phosphorylation of the TWIST1 TQS motif was necessary for pro-metastatic functions. In vivo analysis demonstrates that the Twist1-AQA mutation exhibits reduced capacity to contribute to metastasis, whereas the expression of the Twist1-DQD mutation exhibits proficient metastatic potential. Tethered TWIST1-E12 heterodimers phenocopied the Twist1-DQD mutation for many in vitro assays, suggesting that TWIST1 phosphorylation may result in heterodimerization in prostate cancer cells. Lastly, the dual phosphatidylinositide 3-kinase (PI3K)-mammalian target of rapamycin (mTOR) inhibitor BEZ235 strongly attenuated TWIST1-induced migration that was dependent on the TQS motif. TWIST1 TQS phosphorylation state determines the intensity of TWIST1-induced pro-metastatic ability in prostate cancer cells, which may be partly explained mechanistically by TWIST1 dimeric partner choice.
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Affiliation(s)
- Rajendra P Gajula
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Sivarajan T Chettiar
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Russell D Williams
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Katriana Nugent
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Yoshinori Kato
- The Russell H. Morgan Department of Radiology and Radiological Science, Division of Cancer Imaging Research, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA; In Vivo Cellular and Molecular Imaging Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Hailun Wang
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Reem Malek
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Kekoa Taparra
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Cellular and Molecular Medicine Program, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Jessica Cades
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Anvesh Annadanam
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - A-Rum Yoon
- Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA
| | - Elana Fertig
- Department of Oncology, Division of Biostatistics and Bioinformatics, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Beth A Firulli
- Department of Pediatrics, Riley Heart Research Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Lucia Mazzacurati
- Department of Medicine, Division of Hematology-Oncology, Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Timothy F Burns
- Department of Medicine, Division of Hematology-Oncology, Hillman Cancer Center, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Anthony B Firulli
- Department of Pediatrics, Riley Heart Research Center, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Steven S An
- In Vivo Cellular and Molecular Imaging Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Environmental Health Sciences, Johns Hopkins University Bloomberg School of Public Health, Baltimore, MD, USA; Physical Sciences in Oncology Center, Johns Hopkins University, Baltimore, MD, USA; Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, MD, USA
| | - Phuoc T Tran
- Department of Radiation Oncology and Molecular Radiation Sciences, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Oncology, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA; In Vivo Cellular and Molecular Imaging Center, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Cellular and Molecular Medicine Program, Johns Hopkins University School of Medicine, Baltimore, MD, USA; Department of Urology, Johns Hopkins University School of Medicine, Baltimore, MD, USA.
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132
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Chen L, Chen R, Kemper S, Charrier A, Brigstock DR. Suppression of fibrogenic signaling in hepatic stellate cells by Twist1-dependent microRNA-214 expression: Role of exosomes in horizontal transfer of Twist1. Am J Physiol Gastrointest Liver Physiol 2015; 309:G491-9. [PMID: 26229009 PMCID: PMC4572411 DOI: 10.1152/ajpgi.00140.2015] [Citation(s) in RCA: 105] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 07/23/2015] [Indexed: 01/31/2023]
Abstract
A hallmark of liver fibrosis is the activation of hepatic stellate cells (HSC), which results in their production of fibrotic molecules, a process that is largely regulated by connective tissue growth factor (CCN2). CCN2 is increasingly expressed during HSC activation because of diminished expression of microRNA-214 (miR-214), a product of dynamin 3 opposite strand (DNM3os) that directly suppresses CCN2 mRNA. We show that an E-box in the miR-214 promoter binds the basic helix-loop-helix transcription factor, Twist1, which drives miR-214 expression and results in CCN2 suppression. Twist1 expression was suppressed in HSC of fibrotic livers or in cultured HSC undergoing activation in vitro or after treatment with ethanol. Furthermore, Twist1 decreasingly interacted with DNM3os as HSC underwent activation in vitro. Nanovesicular exosomes secreted by quiescent but not activated HSC contained high levels of Twist1, thus reflecting the suppression of cellular Twist1 during HSC activation. Exosomal Twist1 was intercellularly shuttled between HSC and stimulated expression of miR-214 in the recipient cells, causing expression of CCN2 and its downstream effectors to be suppressed. Additionally, the miR-214 E-box in HSC was also regulated by hepatocyte-derived exosomes, showing that functional transfer of exosomal Twist1 occurs between different cell types. Finally, the levels of Twist1, miR-214, or CCN2 in circulating exosomes from fibrotic mice reflected fibrosis-induced changes in the liver itself, highlighting the potential utility of these and other constituents in serum exosomes as novel circulating biomarkers for liver fibrosis. These findings reveal a unique function for cellular or exosomal Twist1 in CCN2-dependent fibrogenesis.
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Affiliation(s)
- Li Chen
- 1The Research Institute at Nationwide Children's Hospital, Columbus, Ohio;
| | - Ruju Chen
- 1The Research Institute at Nationwide Children's Hospital, Columbus, Ohio;
| | - Sherri Kemper
- 1The Research Institute at Nationwide Children's Hospital, Columbus, Ohio;
| | - Alyssa Charrier
- 1The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; ,2Molecular, Cellular, and Developmental Biology Program, The Ohio State University, Columbus, Ohio;
| | - David R. Brigstock
- 1The Research Institute at Nationwide Children's Hospital, Columbus, Ohio; ,2Molecular, Cellular, and Developmental Biology Program, The Ohio State University, Columbus, Ohio; ,3Department of Surgery, Wexner Medical Center, The Ohio State University, Columbus, Ohio
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133
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Twist1 Is a TNF-Inducible Inhibitor of Clock Mediated Activation of Period Genes. PLoS One 2015; 10:e0137229. [PMID: 26361389 PMCID: PMC4567340 DOI: 10.1371/journal.pone.0137229] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2015] [Accepted: 08/14/2015] [Indexed: 12/14/2022] Open
Abstract
Background Activation of the immune system affects the circadian clock. Tumor necrosis factor (TNF) and Interleukin (IL)-1β inhibit the expression of clock genes including Period (Per) genes and the PAR-bZip clock-controlled gene D-site albumin promoter-binding protein (Dbp). These effects are due to cytokine-induced interference of E-box mediated transcription of clock genes. In the present study we have assessed the two E-box binding transcriptional regulators Twist1 and Twist2 for their role in cytokine induced inhibition of clock genes. Methods The expression of the clock genes Per1, Per2, Per3 and of Dbp was assessed in NIH-3T3 mouse fibroblasts and the mouse hippocampal neuronal cell line HT22. Cells were treated for 4h with TNF and IL-1β. The functional role of Twist1 and Twist2 was assessed by siRNAs against the Twist genes and by overexpression of TWIST proteins. In luciferase (luc) assays NIH-3T3 cells were transfected with reporter gene constructs, which contain a 3xPer1 E-box or a Dbp E-box. Quantitative chromatin immunoprecipitation (ChIP) was performed using antibodies to TWIST1 and CLOCK, and the E-box consensus sequences of Dbp (CATGTG) and Per1 E-box (CACGTG). Results We report here that siRNA against Twist1 protects NIH-3T3 cells and HT22 cells from down-regulation of Period and Dbp by TNF and IL-1β. Overexpression of Twist1, but not of Twist2, mimics the effect of the cytokines. TNF down-regulates the activation of Per1-3xE-box-luc, the effect being prevented by siRNA against Twist1. Overexpression of Twist1, but not of Twist2, inhibits Per1-3xE-box-luc or Dbp-E-Box-luc activity. ChIP experiments show TWIST1 induction by TNF to compete with CLOCK binding to the E-box of Period genes and Dbp. Conclusion Twist1 plays a pivotal role in the TNF mediated suppression of E-box dependent transactivation of Period genes and Dbp. Thereby Twist1 may provide a link between the immune system and the circadian timing system.
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Twigg SRF, Wilkie AOM. A Genetic-Pathophysiological Framework for Craniosynostosis. Am J Hum Genet 2015; 97:359-77. [PMID: 26340332 PMCID: PMC4564941 DOI: 10.1016/j.ajhg.2015.07.006] [Citation(s) in RCA: 171] [Impact Index Per Article: 19.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 07/14/2015] [Indexed: 12/24/2022] Open
Abstract
Craniosynostosis, the premature fusion of one or more cranial sutures of the skull, provides a paradigm for investigating the interplay of genetic and environmental factors leading to malformation. Over the past 20 years molecular genetic techniques have provided a new approach to dissect the underlying causes; success has mostly come from investigation of clinical samples, and recent advances in high-throughput DNA sequencing have dramatically enhanced the study of the human as the preferred "model organism." In parallel, however, we need a pathogenetic classification to describe the pathways and processes that lead to cranial suture fusion. Given the prenatal onset of most craniosynostosis, investigation of mechanisms requires more conventional model organisms; principally the mouse, because of similarities in cranial suture development. We present a framework for classifying genetic causes of craniosynostosis based on current understanding of cranial suture biology and molecular and developmental pathogenesis. Of note, few pathologies result from complete loss of gene function. Instead, biochemical mechanisms involving haploinsufficiency, dominant gain-of-function and recessive hypomorphic mutations, and an unusual X-linked cellular interference process have all been implicated. Although few of the genes involved could have been predicted based on expression patterns alone (because the genes play much wider roles in embryonic development or cellular homeostasis), we argue that they fit into a limited number of functional modules active at different stages of cranial suture development. This provides a useful approach both when defining the potential role of new candidate genes in craniosynostosis and, potentially, for devising pharmacological approaches to therapy.
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Affiliation(s)
- Stephen R F Twigg
- Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK
| | - Andrew O M Wilkie
- Weatherall Institute of Molecular Medicine, University of Oxford, John Radcliffe Hospital, Headington, Oxford OX3 9DS, UK; Craniofacial Unit, Department of Plastic and Reconstructive Surgery, Oxford University Hospitals NHS Trust, John Radcliffe Hospital, Headington, Oxford OX3 9DU, UK.
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Is there an effect of obstructive sleep apnea syndrome on oxidative stress and inflammatory parameters in patients with craniofacial anomalies? J Craniofac Surg 2015; 24:1908-13. [PMID: 24220372 DOI: 10.1097/scs.0b013e3182a41c05] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
The aim of this study was to test the hypothesis that obstructive sleep apnea syndrome (OSAS) exhibits oxidative stress and inflammation in patients who have a congenital, craniofacial anomaly.This prospective, cross-sectional cohort study included ambulant sleep study data to asses OSAS in patients with syndromic craniosynostosis and Treacher Collins syndrome. Laboratory analyses were performed including malondialdehyde, tumor necrosis factor α (TNF-α), interleukin 6, and high-sensitivity C-reactive protein.Forty-eight patients were included; 11 were adults; 37 were children. The patients' body mass indexes were normal, with a median (SD) of 0.7 (-1.82 to 2.48) in children and 20.5 (15.2-29.4) in adults. Obstructive sleep apnea syndrome was diagnosed in 23 of 48 patients. It was mild (median obstructive apnea-hypopnea index [oAHI], 2.3; oxygenation-desaturation index [ODI], 0.9) in 16 patients and moderate/severe in 7 patients (median oAHI, 10.8; ODI, 5.0). Neither oxidative stress nor inflammation had a correlation with the oAHI and ODI. Only TNF-α was found significantly higher in both the OSAS and non-OSAS groups compared with the reference values (median, 15.1 pg/mL and 12.3 pg/mL versus 4.05 [0.0-8.1 pg/mL], P < 0.001 and P < 0.001, respectively).Based on our findings we conclude that (mainly mild) OSAS, oxidative stress, as well as high-sensitivity C-reactive protein and interleukin 6 levels are not abnormal in the day time in a population of nonobese patients with a craniofacial anomaly. The increased level of TNF-α cannot be explained by OSAS. Future research should focus on mapping chronobiologic changes for further interpretation of the results.
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Bessenyei B, Nagy A, Szakszon K, Mokánszki A, Balogh E, Ujfalusi A, Tihanyi M, Novák L, Bognár L, Oláh É. Clinical and genetic characteristics of craniosynostosis in Hungary. Am J Med Genet A 2015; 167A:2985-91. [PMID: 26289989 DOI: 10.1002/ajmg.a.37298] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2014] [Accepted: 08/06/2015] [Indexed: 11/08/2022]
Abstract
Craniosynostosis, the premature closure of cranial sutures, is a common craniofacial disorder with heterogeneous etiology and appearance. The purpose of this study was to investigate the clinical and molecular characteristics of craniosynostoses in Hungary, including the classification of patients and the genetic analysis of the syndromic forms. Between 2006 and 2012, 200 patients with craniosynostosis were studied. Classification was based on the suture(s) involved and the associated clinical features. In syndromic cases, genetic analyses, including mutational screening of the hotspot regions of the FGFR1, FGFR2, FGFR3, and TWIST1 genes, karyotyping and FISH study of TWIST1, were performed. The majority (88%) of all patients with craniosynostosis were nonsyndromic. The sagittal suture was most commonly involved, followed by the coronal, metopic, and lambdoid sutures. Male, twin gestation, and very low birth weight were risk factors for craniosynostosis. Syndromic craniosynostosis was detected in 24 patients. In 17 of these patients, Apert, Crouzon, Pfeiffer, Muenke, or Saethre-Chotzen syndromes were identified. In one patient, multiple-suture craniosynostosis was associated with achondroplasia. Clinical signs were not typical for any particular syndrome in six patients. Genetic abnormalities were detected in 18 syndromic patients and in 8 relatives. In addition to 10 different, known mutations in FGFR1,FGFR2 or FGFR3, one novel missense mutation, c.528C>G(p.Ser176Arg), was detected in the TWIST1 gene of a patient with Saethre-Chotzen syndrome. Our results indicate that detailed clinical assessment is of paramount importance in the classification of patients and allows indication of targeted molecular testing with the highest possible diagnostic yield.
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Affiliation(s)
- Beáta Bessenyei
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Andrea Nagy
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Katalin Szakszon
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | | | - Erzsébet Balogh
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Anikó Ujfalusi
- Department of Laboratory Medicine, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Mariann Tihanyi
- Genetic Laboratory, Hospital of Zala County, Zalaegerszeg, Hungary
| | - László Novák
- Department of Neurosurgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - László Bognár
- Department of Neurosurgery, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
| | - Éva Oláh
- Department of Pediatrics, Faculty of Medicine, University of Debrecen, Debrecen, Hungary
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Nuti SV, Mor G, Li P, Yin G. TWIST and ovarian cancer stem cells: implications for chemoresistance and metastasis. Oncotarget 2015; 5:7260-71. [PMID: 25238494 PMCID: PMC4202121 DOI: 10.18632/oncotarget.2428] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The transcription factor TWIST1 is a highly evolutionally conserved basic Helix-Loop-Helix (bHLH) transcription factor that functions as a master regulator of gastrulation and mesodermal development. Although TWIST1 was initially associated with embryo development, an increasing number of studies have shown TWIST1 role in the regulation of tissue homeostasis, primarily as a regulator of inflammation. More recently, TWIST1 has been found to be involved in the process of tumor metastasis through the regulation of Epithelial Mesenchymal Transition (EMT). The objective of this review is to examine the normal functions of TWIST1 and its role in tumor development, with a particular focus on ovarian cancer. We discuss the potential role of TWIST1 in the context of ovarian cancer stem cells and its influence in the process of tumor formation.
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Affiliation(s)
- Sudhakar V Nuti
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - Gil Mor
- Department of Obstetrics, Gynecology and Reproductive Sciences, Yale School of Medicine, New Haven, CT, USA
| | - Peiyao Li
- Department of Pathology, School of Basic Medicine, Central South University, Changsha, Hunan, China
| | - Gang Yin
- Department of Pathology, School of Basic Medicine, Central South University, Changsha, Hunan, China
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Marchegiani S, Davis T, Tessadori F, van Haaften G, Brancati F, Hoischen A, Huang H, Valkanas E, Pusey B, Schanze D, Venselaar H, Vulto-van Silfhout AT, Wolfe LA, Tifft CJ, Zerfas PM, Zambruno G, Kariminejad A, Sabbagh-Kermani F, Lee J, Tsokos MG, Lee CCR, Ferraz V, da Silva EM, Stevens CA, Roche N, Bartsch O, Farndon P, Bermejo-Sanchez E, Brooks BP, Maduro V, Dallapiccola B, Ramos FJ, Chung HYB, Le Caignec C, Martins F, Jacyk WK, Mazzanti L, Brunner HG, Bakkers J, Lin S, Malicdan MCV, Boerkoel CF, Gahl WA, de Vries BBA, van Haelst MM, Zenker M, Markello TC. Recurrent Mutations in the Basic Domain of TWIST2 Cause Ablepharon Macrostomia and Barber-Say Syndromes. Am J Hum Genet 2015; 97:99-110. [PMID: 26119818 DOI: 10.1016/j.ajhg.2015.05.017] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Accepted: 05/21/2015] [Indexed: 11/29/2022] Open
Abstract
Ablepharon macrostomia syndrome (AMS) and Barber-Say syndrome (BSS) are rare congenital ectodermal dysplasias characterized by similar clinical features. To establish the genetic basis of AMS and BSS, we performed extensive clinical phenotyping, whole exome and candidate gene sequencing, and functional validations. We identified a recurrent de novo mutation in TWIST2 in seven independent AMS-affected families, as well as another recurrent de novo mutation affecting the same amino acid in ten independent BSS-affected families. Moreover, a genotype-phenotype correlation was observed, because the two syndromes differed based solely upon the nature of the substituting amino acid: a lysine at TWIST2 residue 75 resulted in AMS, whereas a glutamine or alanine yielded BSS. TWIST2 encodes a basic helix-loop-helix transcription factor that regulates the development of mesenchymal tissues. All identified mutations fell in the basic domain of TWIST2 and altered the DNA-binding pattern of Flag-TWIST2 in HeLa cells. Comparison of wild-type and mutant TWIST2 expressed in zebrafish identified abnormal developmental phenotypes and widespread transcriptome changes. Our results suggest that autosomal-dominant TWIST2 mutations cause AMS or BSS by inducing protean effects on the transcription factor's DNA binding.
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Affiliation(s)
- Shannon Marchegiani
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA; Department of Pediatrics, Walter Reed National Military Medical Center, Bethesda, MD 20892, USA
| | - Taylor Davis
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA
| | - Federico Tessadori
- Hubrecht Institute-KNAW and University Medical Centre Utrecht, 3584 CT Utrecht, the Netherlands
| | - Gijs van Haaften
- Department of Medical Genetics, University Medical Center Utrecht, 3508 AB Utrecht, the Netherlands
| | - Francesco Brancati
- Department of Medical, Oral, and Biotechnological Sciences, University of G. d' Annunzio Chieti and Pescara, Chieti 66100, Italy
| | - Alexander Hoischen
- Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands
| | - Haigen Huang
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - Elise Valkanas
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA
| | - Barbara Pusey
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA
| | - Denny Schanze
- Medizinische Fakultät und Universitätsklinikum Magdeburg, Institute of Human Genetics, 39120 Magdeburg, Germany
| | - Hanka Venselaar
- Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands
| | | | - Lynne A Wolfe
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA; Office of the Clinical Director, National Human Genome Research Institute/NIH, Bethesda, MD 20892, USA
| | - Cynthia J Tifft
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA; Office of the Clinical Director, National Human Genome Research Institute/NIH, Bethesda, MD 20892, USA
| | - Patricia M Zerfas
- Office of Research Services, Division of Veterinary Resources, NIH, Bethesda, MD 20892, USA
| | - Giovanna Zambruno
- Laboratory of Molecular and Cell Biology, Istituto Dermopatico dell'Immacolata IDI-IRCCS, Rome 00167, Italy
| | | | | | - Janice Lee
- National Institute of Dental and Craniofacial Research, NIH, Bethesda, MD 20892, USA
| | - Maria G Tsokos
- Laboratory of Pathology, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Chyi-Chia R Lee
- Laboratory of Pathology, National Cancer Institute, NIH, Bethesda, MD 20892, USA
| | - Victor Ferraz
- Departamento de Genetica, Faculdade de Medicina de Ribeirao Preto, Universidade de Sao Paulo, Sao Paulo 14049, Brazil
| | - Eduarda Morgana da Silva
- Departamento de Genetica, Faculdade de Medicina de Ribeirao Preto, Universidade de Sao Paulo, Sao Paulo 14049, Brazil
| | - Cathy A Stevens
- Department of Medical Genetics, T.C. Thompson Children's Hospital, Chattanooga, TN 37403, USA
| | - Nathalie Roche
- Department of Plastic and Reconstructive Surgery, University Hospital of Ghent, Ghent 9000, Belgium
| | - Oliver Bartsch
- Institute of Human Genetics, Johannes Gutenberg University, Mainz 55131, Germany
| | - Peter Farndon
- Clinical Genetics Unit, Birmingham Women's Healthcare Trust, Birmingham B15 2TG, UK
| | - Eva Bermejo-Sanchez
- ECEMC (Spanish Collaborative Study of Congenital Malformations), CIAC, Instituto de Investigación de Enfermedades Raras (IIER), Instituto de Salud Carlos III; and CIBER de Enfermedades Raras (CIBERER)-U724, Madrid 28029, Spain
| | - Brian P Brooks
- Unit on Pediatric, Developmental, and Genetic Eye Disease, National Eye Institute, NIH, Bethesda, MD 20892, USA
| | - Valerie Maduro
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA
| | - Bruno Dallapiccola
- Department of Medical Genetics, Bambino Gesù Children's Hospital, IRCCS, Rome 00165, Italy
| | - Feliciano J Ramos
- Unidad de Genética Médica, Servicio de Pediatría, GCV-CIBERER Hospital Clínico Universitario "Lozano Blesa," Facultad de Medicina, Universidad de Zaragoza, 50009 Zaragoza, Spain
| | - Hon-Yin Brian Chung
- Department of Paediatrics and Adolescent Medicine, Centre for Genomic Sciences, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong SAR, China
| | - Cédric Le Caignec
- Service de genetique medicale, CHU Nantes, 44093 Nantes, France and Inserm, UMR957, Faculté de Médecine, 44093 Nantes, France
| | - Fabiana Martins
- Special Care Dentistry Center, Department of Stomatology, School of Dentistry, University of São Paulo, São Paulo 05508-070, Brazil
| | - Witold K Jacyk
- Department of Dermatology, University of Pretoria, Pretoria 0028, Republic of South Africa
| | - Laura Mazzanti
- Department of Pediatrics, S. Orsola-Malpighi Hospital University of Bologna, 40138 Bologna, Italy
| | - Han G Brunner
- Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands; Department of Clinical Genetics, Maastricht University Medical Center, PO Box 5800, 6202AZ Maastricht, the Netherlands
| | - Jeroen Bakkers
- Hubrecht Institute-KNAW and University Medical Centre Utrecht, 3584 CT Utrecht, the Netherlands
| | - Shuo Lin
- Department of Molecular, Cell, and Developmental Biology, University of California, Los Angeles, Los Angeles, CA 90095, USA
| | - May Christine V Malicdan
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA; Office of the Clinical Director, National Human Genome Research Institute/NIH, Bethesda, MD 20892, USA.
| | - Cornelius F Boerkoel
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA
| | - William A Gahl
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA; Office of the Clinical Director, National Human Genome Research Institute/NIH, Bethesda, MD 20892, USA.
| | - Bert B A de Vries
- Department of Human Genetics, Radboud University Medical Center, 6525 GA Nijmegen, the Netherlands
| | - Mieke M van Haelst
- Department of Medical Genetics, University Medical Center Utrecht, 3508 AB Utrecht, the Netherlands
| | - Martin Zenker
- Medizinische Fakultät und Universitätsklinikum Magdeburg, Institute of Human Genetics, 39120 Magdeburg, Germany
| | - Thomas C Markello
- NIH Undiagnosed Diseases Program, Common Fund, Office of the Director, NIH and National Human Genome Research Institute, NIH, Bethesda, MD 20892, USA
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Zou H, Feng X, Cao JG. Twist in hepatocellular carcinoma: pathophysiology and therapeutics. Hepatol Int 2015; 9:399-405. [DOI: 10.1007/s12072-015-9634-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/11/2014] [Accepted: 04/16/2015] [Indexed: 12/19/2022]
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141
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Zheng S, Hedl M, Abraham C. Twist1 and Twist2 Contribute to Cytokine Downregulation following Chronic NOD2 Stimulation of Human Macrophages through the Coordinated Regulation of Transcriptional Repressors and Activators. THE JOURNAL OF IMMUNOLOGY 2015; 195:217-26. [PMID: 26019273 DOI: 10.4049/jimmunol.1402808] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2014] [Accepted: 04/27/2015] [Indexed: 12/13/2022]
Abstract
Proper regulation of microbial-induced cytokines is critical to intestinal immune homeostasis. Acute stimulation of nucleotide-binding oligomerization domain 2 (NOD2), the Crohn's disease-associated sensor of bacterial peptidoglycan, induces cytokines. However, chronic NOD2 stimulation in macrophages decreases cytokines upon pattern recognition receptor (PRR) restimulation; cytokine attenuation to PRR stimulation is similarly observed in intestinal macrophages. The role for the transcriptional repressors Twist1 and Twist2 in regulating PRR-induced cytokine outcomes is poorly understood and has not been reported for NOD2. We found that Twist1 and Twist2 were required for optimal cytokine downregulation during acute and, particularly, chronic NOD2 stimulation of human macrophages. Consistently, Twist1 and Twist2 expression was increased after chronic NOD2 stimulation; this increased expression was IL-10 and TGF-β dependent. Although Twist1 and Twist2 did not coregulate each other's expression, they cooperated to enhance binding to cytokine promoters after chronic NOD2 stimulation. Moreover, Twist1 and Twist2 contributed to enhance expression and promoter binding of the proinflammatory inhibitor c-Maf and the transcriptional repressor Bmi1. Restoring c-Maf and Bmi1 expression in Twist-deficient macrophages restored NOD2-induced cytokine downregulation. Furthermore, with chronic NOD2 stimulation, Twist1 and Twist2 contributed to the decreased expression and cytokine promoter binding of the transcriptional activators activating transcription factor 4, C/EBPα, Runx1, and Runx2. Knockdown of these transcriptional activators in Twist-deficient macrophages restored cytokine downregulation after chronic NOD2 stimulation. Finally, NOD2 synergized with additional PRRs to increase Twist1 and Twist2 expression and Twist-dependent pathways. Therefore, after chronic NOD2 stimulation Twist1 and Twist2 coordinate the regulation of both transcriptional activators and repressors, thereby mediating optimal cytokine downregulation.
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Affiliation(s)
- Shasha Zheng
- Department of Internal Medicine, Yale University, New Haven, CT 06520
| | - Matija Hedl
- Department of Internal Medicine, Yale University, New Haven, CT 06520
| | - Clara Abraham
- Department of Internal Medicine, Yale University, New Haven, CT 06520
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Morphology of the foramen magnum in syndromic and non-syndromic brachycephaly. Childs Nerv Syst 2015; 31:735-41. [PMID: 25686894 DOI: 10.1007/s00381-015-2639-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/10/2014] [Accepted: 02/03/2015] [Indexed: 12/29/2022]
Abstract
PURPOSE The shape and size of the foramen magnum (FM) can be altered in craniosynostoses. However, few studies have investigated these changes. In this paper, we investigate the morphology of the foramen magnum in syndromic and non-syndromic brachycephaly. METHODS Surface area, anteroposterior (AP) diameter, and transverse diameters of the FM were measured on high-resolution CT scans in children with Crouzon (25), Pfeiffer (21), Apert (26), Saethre-Chotzen (7) syndromes, and isolated bicoronal synostosis (9) and compared to an age-matched control group (30). RESULTS A significantly smaller FM surface area was observed in Crouzon (6.3 ± 1.7 cm(2)) and Pfeiffer (6.4 ± 2.3 cm(2)) syndromes as compared to the control group (7.4 ± 1.3 cm(2), p = 0.006 and p = .017, respectively). In comparison to the control group, no statistically significant alteration in FM surface area was noted in patients with Apert, Saethre-Chotzen, or isolated bicoronal synostosis (p = 0.37, p = 0.71, p = 0.40 respectively). The transverse diameter of FM was significantly smaller in Crouzon, Pfeiffer, and Apert syndromes compared to the control group (p = 0.005, p = 0.002, p = 0.03 respectively). In Saethre-Chotzen and isolated bicoronal synostosis, no difference in transverse diameter was demonstrated. Among all groups, only Crouzon syndrome showed reduced anteroposterior diameter as compared to controls (p = 0.005). In Pfeiffer and Apert syndromes, there was elongation of the shape of the FM with a relatively narrowed width as demonstrated in a significantly increased AP to transverse diameter ratio (p = 0.002 and p = 0.019, respectively). DISCUSSION AND CONCLUSIONS The FM shape and area is significantly altered in fibroblast growth factor receptor (FGFR)-related brachycephaly syndromes (Crouzon, Pfeiffer, and Apert), whereas in patients with Saethre-Chotzen syndrome (TWIST-1 mutation) and isolated non-syndromic bicoronal synostosis, the shape and mean FM area was not statistically different from that of normals. This study brings to light the important role of FGFRs on FM growth and shape. TWIST-1 mutation (Saethre-Chotzen syndrome) does not appear to have an important effect in shaping the FM.
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Ma G, He J, Yu Y, Xu Y, Yu X, Martinez J, Lonard DM, Xu J. Tamoxifen inhibits ER-negative breast cancer cell invasion and metastasis by accelerating Twist1 degradation. Int J Biol Sci 2015; 11:618-28. [PMID: 25892968 PMCID: PMC4400392 DOI: 10.7150/ijbs.11380] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 01/09/2015] [Indexed: 12/22/2022] Open
Abstract
Twist1 is a transcription factor driving epithelial-mesenchymal transition, invasion and metastasis of breast cancer cells. Mice with germ-line Twist1 knockout are embryonic lethal, while adult mice with inducible Twist1 knockout have no obvious health problems, suggesting that Twist1 is a viable therapeutic target for the inhibition of invasion and metastasis of breast cancer in adult patients. In this study, we expressed a luciferase protein or a Twist1-luciferase fusion protein in HeLa cells as part of a high throughput system to screen 1280 compounds in the Library of Pharmacologically Active Compounds (LOPAC) from Sigma-Aldrich for their effects on Twist1 protein expression. One of the most interesting compounds identified is tamoxifen, a selective estrogen receptor (ER) modulator used to treat ER-positive breast cancer. Tamoxifen treatment significantly accelerated Twist1 degradation in multiple cell lines including HEK293 human kidney cells, 4T1 and 168FARN mouse mammary tumor cells with either ectopically or endogenously expressed Twist1. Tamoxifen-induced Twist1 degradation could be blocked by the MG132 proteasome inhibitor, suggesting that tamoxifen induces Twist1 degradation through the ubiquitination-proteasome pathway. However, tamoxifen-induced Twist1 degradation was independent of Twist1 mRNA expression, estrogen signaling and MAPK-mediated Twist1 phosphorylation in these cells. Importantly, tamoxifen also significantly inhibited invasive behavior in Matrigel and lung metastasis in SCID-bg mice of ER-negative 4T1 mammary tumor cells, which depend on endogenous Twist1 to invade and metastasize. These results indicate that tamoxifen can significantly accelerate Twist1 degradation to suppress cancer cell invasion and metastasis, suggesting that tamoxifen can be used not only to treat ER-positive breast cancers but also to reduce Twist1-mediated invasion and metastasis in ER-negative breast cancers.
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Affiliation(s)
- Gang Ma
- 1. Department of Breast and Thyroid Cancer Surgery, The First Affiliated Hospital of Xi'an Jiaotong University Medical School, Xi'an, China; ; 2. Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Jianjun He
- 1. Department of Breast and Thyroid Cancer Surgery, The First Affiliated Hospital of Xi'an Jiaotong University Medical School, Xi'an, China
| | - Yang Yu
- 2. Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Yixiang Xu
- 2. Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA; ; 3. Institute of Biosciences and Technology, Texas A&M University Health Science Center, Houston, TX, USA
| | - Xiaobin Yu
- 2. Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Jarrod Martinez
- 2. Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - David M Lonard
- 2. Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA
| | - Jianming Xu
- 2. Department of Molecular and Cellular Biology, Baylor College of Medicine, Houston, TX, USA; ; 4. Institute for Cancer Medicine and School of Basic Medical Sciences, Luzhou Medical College, Sichuan, China
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144
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Marie PJ. Osteoblast dysfunctions in bone diseases: from cellular and molecular mechanisms to therapeutic strategies. Cell Mol Life Sci 2015; 72:1347-61. [PMID: 25487608 PMCID: PMC11113967 DOI: 10.1007/s00018-014-1801-2] [Citation(s) in RCA: 56] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2014] [Revised: 11/13/2014] [Accepted: 12/01/2014] [Indexed: 12/27/2022]
Abstract
Several metabolic, genetic and oncogenic bone diseases are characterized by defective or excessive bone formation. These abnormalities are caused by dysfunctions in the commitment, differentiation or survival of cells of the osteoblast lineage. During the recent years, significant advances have been made in our understanding of the cellular and molecular mechanisms underlying the osteoblast dysfunctions in osteoporosis, skeletal dysplasias and primary bone tumors. This led to suggest novel therapeutic approaches to correct these abnormalities such as the modulation of WNT signaling, the pharmacological modulation of proteasome-mediated protein degradation, the induction of osteoprogenitor cell differentiation, the repression of cancer cell proliferation and the manipulation of epigenetic mechanisms. This article reviews our current understanding of the major cellular and molecular mechanisms inducing osteoblastic cell abnormalities in age-related bone loss, genetic skeletal dysplasias and primary bone tumors, and discusses emerging therapeutic strategies to counteract the osteoblast abnormalities in these disorders of bone formation.
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Affiliation(s)
- Pierre J Marie
- INSERM UMR-1132, Hôpital Lariboisière, 2 rue Ambroise Paré, 75475, Paris Cedex 10, France,
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145
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Zhao H, Feng J, Ho TV, Grimes W, Urata M, Chai Y. The suture provides a niche for mesenchymal stem cells of craniofacial bones. Nat Cell Biol 2015; 17:386-96. [PMID: 25799059 PMCID: PMC4380556 DOI: 10.1038/ncb3139] [Citation(s) in RCA: 275] [Impact Index Per Article: 30.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Accepted: 02/16/2015] [Indexed: 12/19/2022]
Abstract
Bone tissue undergoes constant turnover supported by stem cells. Recent studies showed that perivascular mesenchymal stem cells (MSCs) contribute to the turnover of long bones. Craniofacial bones are flat bones derived from a different embryonic origin than the long bones. The identity and regulating niche for craniofacial-bone MSCs remain unknown. Here, we identify Gli1+ cells within the suture mesenchyme as the main MSC population for craniofacial bones. They are not associated with vasculature, give rise to all craniofacial bones in the adult and are activated during injury repair. Gli1+ cells are typical MSCs in vitro. Ablation of Gli1+ cells leads to craniosynostosis and arrest of skull growth, indicating that these cells are an indispensable stem cell population. Twist1(+/-) mice with craniosynostosis show reduced Gli1+ MSCs in sutures, suggesting that craniosynostosis may result from diminished suture stem cells. Our study indicates that craniofacial sutures provide a unique niche for MSCs for craniofacial bone homeostasis and repair.
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Affiliation(s)
- Hu Zhao
- Center for Craniofacial Molecular Biology, Ostrow School of Dentistry, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033
| | - Jifan Feng
- Center for Craniofacial Molecular Biology, Ostrow School of Dentistry, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033
| | - Thach-Vu Ho
- Center for Craniofacial Molecular Biology, Ostrow School of Dentistry, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033
| | - Weston Grimes
- Center for Craniofacial Molecular Biology, Ostrow School of Dentistry, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033
| | - Mark Urata
- Center for Craniofacial Molecular Biology, Ostrow School of Dentistry, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033
| | - Yang Chai
- Center for Craniofacial Molecular Biology, Ostrow School of Dentistry, University of Southern California, 2250 Alcazar Street, CSA 103, Los Angeles, CA 90033
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146
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di Rocco F, Benoit A, Vigneron J, Segura PB, Klein O, Collet C, Arnaud E. Y-craniosynostosis by premature fusion of the metopic and coronal sutures: a new nosological entity or a variety of Saethre-Chotzen syndrome? ACTA ACUST UNITED AC 2015; 103:306-10. [PMID: 25808521 DOI: 10.1002/bdra.23367] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Revised: 02/01/2015] [Accepted: 02/11/2015] [Indexed: 11/06/2022]
Abstract
BACKGROUND New forms and varieties of craniosynostoses are continuously identified due to the current increased interest of clinicians and genetists especially since the introduction of microarray-based comparative genomic hybridization (Array-CGH) techniques in the diagnostic setting of patients with craniofacial anomalies. METHODS In this report, we describe the case of an infant who associated the early fusion of the metopic and both the coronal sutures. The interaction of the early fusion of the anterior group of the main cranial sutures gave the infant a particular clinical phenotypes with a Y configuration of the frontal bone and a globally reduced size of the skull. Such a deformity was observed in utero and was subsequently confirmed by the postnatal imaging of the head. RESULTS This phenotype was never described previously in antenatal period to our knowledge. The array-CGH showed a heterozygous 9.0 Mb deletion in the chromosomal region 7p21.1p21.3 encompassing approximately 25 other genes, spanning from THSD7A to TWIST1/FERD3L. CONCLUSION This case further illustrates the variability of the clinical spectrum of craniofacial disorders associated with TWIST1 abnormalities. It is important to note that the Saethre-Chotzen syndrome caused by microdeletion is generally characterized by a mental disability. However, of interest, the postoperative psychomotor development of the child considered hereby was within the normal limits.
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Affiliation(s)
- Federico di Rocco
- Unité de Chirurgie Craniofaciale, Service de Neurochirurgie, Centre de Référence National Dysostoses Crâniofaciales, Hôpital Necker, Paris, France
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147
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Maxhimer JB, Bradley JP, Lee JC. Signaling pathways in osteogenesis and osteoclastogenesis: Lessons from cranial sutures and applications to regenerative medicine. Genes Dis 2015; 2:57-68. [PMID: 25961069 PMCID: PMC4425620 DOI: 10.1016/j.gendis.2014.12.004] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
One of the simplest models for examining the interplay between bone formation and resorption is the junction between the cranial bones. Although only roughly a quarter of patients diagnosed with craniosynostosis have been linked to known genetic disturbances, the molecular mechanisms elucidated from these studies have provided basic knowledge of bone homeostasis. This work has translated to methods and advances in bone tissue engineering. In this review, we examine the current knowledge of cranial suture biology derived from human craniosynostosis syndromes and discuss its application to regenerative medicine.
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Affiliation(s)
- Justin B. Maxhimer
- Division of Plastic and Reconstructive Surgery, UCLA David Geffen School of Medicine, CA, USA
| | - James P. Bradley
- Division of Plastic and Reconstructive Surgery, Temple University/St. Christopher's Hospital for Children, PA, USA
| | - Justine C. Lee
- Division of Plastic and Reconstructive Surgery, UCLA David Geffen School of Medicine, CA, USA
- Division of Plastic and Reconstructive Surgery, Greater Los Angeles VA Healthcare System, USA
- Corresponding author. UCLA Division of Plastic and Reconstructive Surgery, 200 UCLA Medical Plaza, Suite 465, Los Angeles, CA 90095, USA. Tel.: +1 310 794 7616; fax: +1 310 206 6833.
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148
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149
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Malik S, Percin FE, Bornholdt D, Albrecht B, Percesepe A, Koch MC, Landi A, Fritz B, Khan R, Mumtaz S, Akarsu NA, Grzeschik KH. Mutations affecting the BHLHA9 DNA-binding domain cause MSSD, mesoaxial synostotic syndactyly with phalangeal reduction, Malik-Percin type. Am J Hum Genet 2014; 95:649-59. [PMID: 25466284 DOI: 10.1016/j.ajhg.2014.10.012] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2014] [Accepted: 10/27/2014] [Indexed: 12/25/2022] Open
Abstract
Mesoaxial synostotic syndactyly, Malik-Percin type (MSSD) (syndactyly type IX) is a rare autosomal-recessive nonsyndromic digit anomaly with only two affected families reported so far. We previously showed that the trait is genetically distinct from other syndactyly types, and through autozygosity mapping we had identified a locus on chromosome 17p13.3 for this unique limb malformation. Here, we extend the number of independent pedigrees from various geographic regions segregating MSSD to a total of six. We demonstrate that three neighboring missense mutations affecting the highly conserved DNA-binding region of the basic helix-loop-helix A9 transcription factor (BHLHA9) are associated with this phenotype. Recombinant BHLHA9 generated by transient gene expression is shown to be located in the cytoplasm and the cell nucleus. Transcription factors 3, 4, and 12, members of the E protein (class I) family of helix-loop-helix transcription factors, are highlighted in yeast two-hybrid analysis as potential dimerization partners for BHLHA9. In the presence of BHLHA9, the potential of these three proteins to activate expression of an E-box-regulated target gene is reduced considerably. BHLHA9 harboring one of the three substitutions detected in MSSD-affected individuals eliminates entirely the transcription activation by these class I bHLH proteins. We conclude that by dimerizing with other bHLH protein monomers, BHLHA9 could fine tune the expression of regulatory factors governing determination of central limb mesenchyme cells, a function made impossible by altering critical amino acids in the DNA binding domain. These findings identify BHLHA9 as an essential player in the regulatory network governing limb morphogenesis in humans.
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Affiliation(s)
- Sajid Malik
- Zentrum fuer Humangenetik, Philipps-Universitaet Marburg, 35033 Marburg, Germany; Department of Animal Sciences, Human Genetics Program, Faculty of Biological Sciences, Quaid-i-Azam University, 45320 Islamabad, Pakistan
| | - Ferda E Percin
- Department of Medical Genetics, Faculty of Medicine, Gazi University, Besevler, 06500 Ankara, Turkey
| | - Dorothea Bornholdt
- Zentrum fuer Humangenetik, Philipps-Universitaet Marburg, 35033 Marburg, Germany
| | - Beate Albrecht
- Institut fuer Humangenetik, Universitaetsklinikum Essen, Universitaet Duisburg-Essen, 45147 Essen, Germany
| | - Antonio Percesepe
- Department of Mother and Child, Medical Genetics Unit, University Hospital of Modena, 41124 Modena, Italy
| | - Manuela C Koch
- Zentrum fuer Humangenetik, Philipps-Universitaet Marburg, 35033 Marburg, Germany
| | - Antonio Landi
- Department of Hand Surgery and Microsurgery, University Hospital of Modena, 41100 Modena, Italy
| | - Barbara Fritz
- Zentrum fuer Humangenetik, Philipps-Universitaet Marburg, 35033 Marburg, Germany
| | - Rizwan Khan
- Department of Animal Sciences, Human Genetics Program, Faculty of Biological Sciences, Quaid-i-Azam University, 45320 Islamabad, Pakistan
| | - Sara Mumtaz
- Department of Animal Sciences, Human Genetics Program, Faculty of Biological Sciences, Quaid-i-Azam University, 45320 Islamabad, Pakistan
| | - Nurten A Akarsu
- Department of Medical Genetics, Gene Mapping Laboratory, Hacettepe University Medical Faculty, Sihhiye, 06100 Ankara, Turkey
| | - Karl-Heinz Grzeschik
- Zentrum fuer Humangenetik, Philipps-Universitaet Marburg, 35033 Marburg, Germany.
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150
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Li J, Liu CH, Sun Y, Gong Y, Fu Z, Evans LP, Tian KT, Juan AM, Hurst CG, Mammoto A, Chen J. Endothelial TWIST1 promotes pathological ocular angiogenesis. Invest Ophthalmol Vis Sci 2014; 55:8267-77. [PMID: 25414194 DOI: 10.1167/iovs.14-15623] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
PURPOSE Pathological neovessel formation impacts many blinding vascular eye diseases. Identification of molecular signatures distinguishing pathological neovascularization from normal quiescent vessels is critical for developing new interventions. Twist-related protein 1 (TWIST1) is a transcription factor important in tumor and pulmonary angiogenesis. This study investigated the potential role of TWIST1 in modulating pathological ocular angiogenesis in mice. METHODS Twist1 expression and localization were analyzed in a mouse model of oxygen-induced retinopathy (OIR). Pathological ocular angiogenesis in Tie2-driven conditional Twist1 knockout mice were evaluated in both OIR and laser-induced choroidal neovascularization models. In addition, the effects of TWIST1 on angiogenesis and endothelial cell function were analyzed in sprouting assays of aortic rings and choroidal explants isolated from Twist1 knockout mice, and in human retinal microvascular endothelial cells treated with TWIST1 small interfering RNA (siRNA). RESULTS TWIST1 is highly enriched in pathological neovessels in OIR retinas. Conditional Tie2-driven depletion of Twist1 significantly suppressed pathological neovessels in OIR without impacting developmental retinal angiogenesis. In a laser-induced choroidal neovascularization model, Twist1 deficiency also resulted in significantly smaller lesions with decreased vascular leakage. In addition, loss of Twist1 significantly decreased vascular sprouting in both aortic ring and choroid explants. Knockdown of TWIST1 in endothelial cells led to dampened expression of vascular endothelial growth factor receptor 2 (VEGFR2) and decreased endothelial cell proliferation. CONCLUSIONS Our study suggests that TWIST1 is a novel regulator of pathologic ocular angiogenesis and may represent a new molecular target for developing potential therapeutic treatments to suppress pathological neovascularization in vascular eye diseases.
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Affiliation(s)
- Jie Li
- Department of Ophthalmology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States Department of Ophthalmology, West China Hospital/West China School of Medicine, Sichuan University, Chengdu, Sichuan, China
| | - Chi-Hsiu Liu
- Department of Ophthalmology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States
| | - Ye Sun
- Department of Ophthalmology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States
| | - Yan Gong
- Department of Ophthalmology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States
| | - Zhongjie Fu
- Department of Ophthalmology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States
| | - Lucy P Evans
- Department of Ophthalmology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States
| | - Katherine T Tian
- Department of Ophthalmology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States
| | - Aimee M Juan
- Department of Ophthalmology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States
| | - Christian G Hurst
- Department of Ophthalmology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States
| | - Akiko Mammoto
- Vascular Biology Program, Department of Surgery, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States
| | - Jing Chen
- Department of Ophthalmology, Boston Children's Hospital and Harvard Medical School, Boston, Massachusetts, United States
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