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Wang Z, Wang X, Guiyu Lou, Litao Qin, Shasha Bian, Tang X, Hongjie Zhu, Shengran Wang, Bingtao Hao, Shixiu Liao. Novel compound heterozygous mutations of the DOCK6 gene in a familial case of Adams-Oliver syndrome 2. Gene 2019; 700:65-69. [PMID: 30898718 DOI: 10.1016/j.gene.2019.03.023] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
INTRODUCTION Adams-Oliver syndrome (AOS) is a rare developmental disorder characterized by the combination of aplasia cutis congenita of the scalp vertex and terminal transverse limb defects. DOCK6 (Dedicator of cytokinesis 6) is one of the six identified AOS genes. METHODS We performed targeted next-generation sequencing (NGS) of a child with an AOS phenotype. Sanger DNA sequencing further validated her lineal consanguinity. To explore the pathological features of the mutation, a minigene assay was used to investigate the effects of the mutation on splicing. RESULTS Two compound heterozygous DOCK6 mutations (c.4106+2T>C and c.3063 C>G (p.Y1021*)) were identified in this family, and both mutations have not been reported previously. Sanger DNA sequencing indicated that the mutations were inherited maternally and paternally, respectively. The results of the minigene assay showed that the c.4106+2T>C mutation resulted in aberrant splicing and caused a four-nucleotide insertion in the transcript and a premature stop codon. CONCLUSIONS Our findings expanded the number of reported cases of this rare disease and the mutation spectrum of DOCK6 mutations, which can serve as the basis for prenatal diagnosis and genetic counseling.
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Affiliation(s)
- Zhaokun Wang
- Medical Genetics Institute of Henan Province, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Xin Wang
- Medical Genetics Institute of Henan Province, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Guiyu Lou
- Medical Genetics Institute of Henan Province, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Litao Qin
- Medical Genetics Institute of Henan Province, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Shasha Bian
- Medical Genetics Institute of Henan Province, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Xia Tang
- Medical Genetics Institute of Henan Province, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Hongjie Zhu
- Medical Genetics Institute of Henan Province, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Shengran Wang
- Medical Genetics Institute of Henan Province, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China
| | - Bingtao Hao
- Medical Genetics Institute of Henan Province, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.
| | - Shixiu Liao
- Medical Genetics Institute of Henan Province, Henan Provincial Key Laboratory of Genetic Diseases and Functional Genomics, Henan Provincial People's Hospital, People's Hospital of Zhengzhou University, Zhengzhou University, Zhengzhou, Henan, China.
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Dedania VS, Moinuddin O, Lagrou LM, Sathrasala S, Cord Medina FM, Del Monte MA, Chang EY, Bohnsack BL, Besirli CG. Ocular Manifestations of Cutis Marmorata Telangiectatica Congenita. Ophthalmol Retina 2019; 3:791-801. [PMID: 31147303 DOI: 10.1016/j.oret.2019.03.025] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 03/13/2019] [Accepted: 03/26/2019] [Indexed: 11/20/2022]
Abstract
PURPOSE To describe the range of ocular manifestations in cutis marmorata telangectatica congenita (CMTC). DESIGN Multicenter, retrospective, nonconsecutive case series. PARTICIPANTS Patients with a diagnosis of CMTC referred for ophthalmologic evaluation between January 1, 2015, and December 31, 2018. METHODS Evaluation of ocular findings at presentation, systemic manifestations suggestive of a diagnosis of CMTC, genetic testing, and visual outcomes after treatment. MAIN OUTCOME MEASURES Visual acuity, findings on ophthalmoscopy, and results of fluorescein angiography. RESULTS Nine patients with CMTC diagnosed clinically based on stereotypical cutaneous vascular malformations were included. The median age at presentation was 8 weeks (range, 2 weeks-4 years). Six patients were female and 3 were male. Avascular retina was identified on dilated fundus examination, fluorescein angiography, or both in 11 eyes of 6 patients. Retinal neovascularization was present bilaterally in 2 patients at presentation. One patient demonstrated retinal venous tortuosity, and another patient showed mild straightening of nasal retinal vessels in both eyes. Two patients (2 eyes) demonstrated retinal detachment (RD). Both were managed surgically. One infant demonstrated RD, whereas the other child showed extensive neovascularization and later progressed to combined tractional-rhegmatogenous detachment. A unique constellation of lacy peripheral capillary anomalies with prominent terminal vascular bulbs was noted in 3 patients. Granular pigment abnormalities were noted in the macula in 5 patients. Two patients demonstrated glaucoma, 1 requiring surgical intervention. Two patients demonstrated features of Adams-Oliver syndrome, with genetic testing identifying a Notch1 mutation in 1 patient. CONCLUSIONS Retinal vascular abnormalities in CMTC may occur more frequently than recognized previously. Given the variability of ocular involvement and the potential for rapidly progressive retinal vascular abnormalities and development of RD, complete ophthalmologic evaluation including measurement of intraocular pressure, gonioscopy, dilated fundus examination, and fluorescein angiography is recommended in infants with suspected CMTC shortly after birth. The distinct pattern of lacy capillary anomalies with prominent terminal bulbs seen in CMTC has not been described in other syndromes of vascular dysgenesis. Therefore, ophthalmic examination may be a valuable method to distinguish CMTC from other disorders demonstrating similar dermatologic and systemic manifestations.
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Affiliation(s)
- Vaidehi S Dedania
- Department of Ophthalmology, New York University School of Medicine, New York, NewYork
| | - Omar Moinuddin
- Department of Ophthalmology and Visual Sciences, University of Michigan, W. K. Kellogg Eye Center, Ann Arbor, Michigan
| | - Lisa M Lagrou
- Section of Ophthalmology, Department of Surgery, University of Calgary, Calgary, Canada
| | - Sanjana Sathrasala
- Department of Ophthalmology and Visual Sciences, University of Michigan, W. K. Kellogg Eye Center, Ann Arbor, Michigan
| | - Flavio Mac Cord Medina
- Universidade Campinas (UNICAMP), Campinas, São Paulo, Brazil; Hospital Federal dos Servidores do Estado (HSE), Rio de Janeiro, Brazil
| | - Monte A Del Monte
- Department of Ophthalmology and Visual Sciences, University of Michigan, W. K. Kellogg Eye Center, Ann Arbor, Michigan
| | - Emmanuel Y Chang
- Retina and Vitreous of Texas, Houston, Texas; Department of Ophthalmology, Houston Methodist Hospital, Houston, Texas; Department of Ophthalmology, Baylor College of Medicine, Houston, Texas
| | - Brenda L Bohnsack
- Department of Ophthalmology and Visual Sciences, University of Michigan, W. K. Kellogg Eye Center, Ann Arbor, Michigan
| | - Cagri G Besirli
- Department of Ophthalmology and Visual Sciences, University of Michigan, W. K. Kellogg Eye Center, Ann Arbor, Michigan.
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Meech R, Hu DG, McKinnon RA, Mubarokah SN, Haines AZ, Nair PC, Rowland A, Mackenzie PI. The UDP-Glycosyltransferase (UGT) Superfamily: New Members, New Functions, and Novel Paradigms. Physiol Rev 2019; 99:1153-1222. [DOI: 10.1152/physrev.00058.2017] [Citation(s) in RCA: 103] [Impact Index Per Article: 20.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
UDP-glycosyltransferases (UGTs) catalyze the covalent addition of sugars to a broad range of lipophilic molecules. This biotransformation plays a critical role in elimination of a broad range of exogenous chemicals and by-products of endogenous metabolism, and also controls the levels and distribution of many endogenous signaling molecules. In mammals, the superfamily comprises four families: UGT1, UGT2, UGT3, and UGT8. UGT1 and UGT2 enzymes have important roles in pharmacology and toxicology including contributing to interindividual differences in drug disposition as well as to cancer risk. These UGTs are highly expressed in organs of detoxification (e.g., liver, kidney, intestine) and can be induced by pathways that sense demand for detoxification and for modulation of endobiotic signaling molecules. The functions of the UGT3 and UGT8 family enzymes have only been characterized relatively recently; these enzymes show different UDP-sugar preferences to that of UGT1 and UGT2 enzymes, and to date, their contributions to drug metabolism appear to be relatively minor. This review summarizes and provides critical analysis of the current state of research into all four families of UGT enzymes. Key areas discussed include the roles of UGTs in drug metabolism, cancer risk, and regulation of signaling, as well as the transcriptional and posttranscriptional control of UGT expression and function. The latter part of this review provides an in-depth analysis of the known and predicted functions of UGT3 and UGT8 enzymes, focused on their likely roles in modulation of levels of endogenous signaling pathways.
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Affiliation(s)
- Robyn Meech
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Dong Gui Hu
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Ross A. McKinnon
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Siti Nurul Mubarokah
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Alex Z. Haines
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Pramod C. Nair
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Andrew Rowland
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
| | - Peter I. Mackenzie
- Department of Clinical Pharmacology and Flinders Centre for Innovation in Cancer, Flinders University College of Medicine and Public Health, Flinders Medical Centre, Bedford Park, South Australia, Australia
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Ogawa M, Okajima T. Structure and function of extracellular O-GlcNAc. Curr Opin Struct Biol 2019; 56:72-77. [PMID: 30669087 DOI: 10.1016/j.sbi.2018.12.002] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 12/05/2018] [Indexed: 11/27/2022]
Abstract
Extracellular O-GlcNAc is a unique modification restricted to the epidermal growth factor (EGF) domain-containing glycoproteins. This O-GlcNAcylation is catalyzed by the EGF-domain specific O-GlcNAc transferase (EOGT), which is localized in the lumen of endoplasmic reticulum. In humans, EOGT is one of the causative genes of a congenital disease, Adams-Oliver syndrome. EOGT is highly expressed in endothelial cells and regulates vascular development and integrity by potentiating Delta-like ligand-mediated Notch signaling. In Drosophila, Eogt modifies Dumpy, an apical extracellular matrix glycoprotein, and affects Dumpy-dependent cell-matrix interaction. In this review, we summarize the current findings of the structure and functions of extracellular O-GlcNAc in animals.
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Affiliation(s)
- Mitsutaka Ogawa
- Department of Molecular Biochemistry, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-8550, Japan
| | - Tetsuya Okajima
- Department of Molecular Biochemistry, Nagoya University Graduate School of Medicine, 65 Tsurumai, Showa-ku, Nagoya 466-8550, Japan.
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Kojmane W, Hmami F, Atmani S. [Adams-Oliver syndrome and cutis marmorata telangiectatica congenita]. Ann Dermatol Venereol 2019; 146:223-225. [PMID: 30638685 DOI: 10.1016/j.annder.2018.11.009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 06/24/2018] [Accepted: 11/21/2018] [Indexed: 12/01/2022]
Abstract
Adams-Oliver syndrome (AOS) is a congenital condition characterized by congenital aplasia cutis and transverse limb defects. Herein we report a case of an infant with severe intra-uterine growth restriction presenting AOS associated with cutis marmorata telangiectatica but with no other organ complications. The outcome was complicated by hemorrhagic and septic shock, which resulted in the death of the infant in a setting of multiorgan failure.
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Affiliation(s)
- W Kojmane
- Service de néonatologie et réanimation néonatale, CHU Hassan II, Fès, Maroc.
| | - F Hmami
- Service de néonatologie et réanimation néonatale, CHU Hassan II, Fès, Maroc
| | - S Atmani
- Service de néonatologie et réanimation néonatale, CHU Hassan II, Fès, Maroc
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57
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Southgate L. Current opinion in the molecular genetics of Adams-Oliver syndrome. Expert Opin Orphan Drugs 2018. [DOI: 10.1080/21678707.2019.1559049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Laura Southgate
- Molecular and Clinical Sciences Research Institute, St George’s University of London, London, UK
- Department of Medical and Molecular Genetics, King’s College London, London, UK
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58
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Tashima Y, Okajima T. Congenital diseases caused by defective O-glycosylation of Notch receptors. NAGOYA JOURNAL OF MEDICAL SCIENCE 2018; 80:299-307. [PMID: 30214079 PMCID: PMC6125653 DOI: 10.18999/nagjms.80.3.299] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The Notch signaling pathway is highly conserved and essential for animal development. It is required for cell differentiation, survival, and proliferation. Regulation of Notch signaling is a crucial process for human health. Ligands initiate a signal cascade by binding to Notch receptors expressed on a neighboring cell. Notch receptors interact with ligands through their epidermal growth factor-like repeats (EGF repeats). Most EGF repeats are modified by O-glycosylation with residues such as O-linked N-acetylglucosamine (O-GlcNAc), O-fucose, and O-glucose. These O-glycan modifications are important for Notch function. Defects in O-glycosylation affect Notch-ligand interaction, trafficking of Notch receptors, and Notch stability on the cell surface. Although the roles of each modification are not fully understood, O-fucose is essential for binding of Notch receptors to their ligands. We reported an EGF domain-specific O-GlcNAc transferase (EOGT) localized in the endoplasmic reticulum. Mutations in genes encoding EOGT or NOTCH1 cause Adams-Oliver syndrome. Dysregulation of Notch signaling because of defects or mutations in Notch receptors or Notch signal-regulating proteins, such as glycosyltransferases, induce a variety of congenital disorders. In this review, we discuss O-glycosylation of Notch receptors and congenital human diseases caused by defects in O-glycans on Notch receptors.
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Affiliation(s)
- Yuko Tashima
- Department of Molecular & Cellular Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Tetsuya Okajima
- Department of Molecular & Cellular Biology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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Tonduti D, Panteghini C, Pichiecchio A, Decio A, Carecchio M, Reale C, Moroni I, Nardocci N, Campistol J, Garcia-Cazorla A, Perez Duenas B, Chiapparini L, Garavaglia B, Orcesi S. Encephalopathies with intracranial calcification in children: clinical and genetic characterization. Orphanet J Rare Dis 2018; 13:135. [PMID: 30111349 PMCID: PMC6094574 DOI: 10.1186/s13023-018-0854-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2018] [Accepted: 06/21/2018] [Indexed: 01/11/2023] Open
Abstract
Background We present a group of patients affected by a paediatric onset genetic encephalopathy with cerebral calcification of unknown aetiology studied with Next Generation Sequencing (NGS) genetic analyses. Methods We collected all clinical and radiological data. DNA samples were tested by means of a customized gene panel including fifty-nine genes associated with known genetic diseases with cerebral calcification. Results We collected a series of fifty patients. All patients displayed complex and heterogeneous phenotypes mostly including developmental delay and pyramidal signs and less frequently movement disorder and epilepsy. Signs of cerebellar and peripheral nervous system involvement were occasionally present. The most frequent MRI abnormality, beside calcification, was the presence of white matter alterations; calcification was localized in basal ganglia and cerebral white matter in the majority of cases. Sixteen out of fifty patients tested positive for mutations in one of the fifty-nine genes analyzed. In fourteen cases the analyses led to a definite genetic diagnosis while results were controversial in the remaining two. Conclusions Genetic encephalopathies with cerebral calcification are usually associated to complex phenotypes. In our series, a molecular diagnosis was achieved in 32% of cases, suggesting that the molecular bases of a large number of disorders are still to be elucidated. Our results confirm that cerebral calcification is a good criterion to collect homogeneous groups of patients to be studied by exome or whole genome sequencing; only a very close collaboration between clinicians, neuroradiologists and geneticists can provide better results from these new generation molecular techniques.
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Affiliation(s)
- Davide Tonduti
- Child Neurology Unit, IRCCS Foundation C. Besta Neurological Institute, Milan, Italy. .,Child Neurology Unit, V. Buzzi Children's Hospital, Milan, Italy.
| | - Celeste Panteghini
- Molecular Neurogenetics Unit, Movement Disorders Diagnostic Section, IRCCS Foundation C. Besta Neurological Institute, Milan, Italy
| | - Anna Pichiecchio
- Department of Neuroradiology, IRCCS Mondino Foundation, Pavia, Italy
| | - Alice Decio
- Child Neurology and Psychiatry Unit, IRCCS Mondino Foundation, Pavia, Italy.,Neuropsychiatry and Neurorehabilitation Unit, IRCCS Medea, Bosisio Parini Lecco, Italy
| | - Miryam Carecchio
- Child Neurology Unit, IRCCS Foundation C. Besta Neurological Institute, Milan, Italy.,Molecular Neurogenetics Unit, Movement Disorders Diagnostic Section, IRCCS Foundation C. Besta Neurological Institute, Milan, Italy.,Department of Medicine and Surgery, PhD Programme in Molecular and Translational Medicine, University of Milan Bicocca, Monza, Italy
| | - Chiara Reale
- Molecular Neurogenetics Unit, Movement Disorders Diagnostic Section, IRCCS Foundation C. Besta Neurological Institute, Milan, Italy
| | - Isabella Moroni
- Child Neurology Unit, IRCCS Foundation C. Besta Neurological Institute, Milan, Italy
| | - Nardo Nardocci
- Child Neurology Unit, IRCCS Foundation C. Besta Neurological Institute, Milan, Italy
| | - Jaume Campistol
- Department of Child Neurology, Pediatric Research Institute, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Angela Garcia-Cazorla
- Department of Child Neurology, Pediatric Research Institute, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | - Belen Perez Duenas
- Department of Child Neurology, Pediatric Research Institute, Hospital Sant Joan de Déu, University of Barcelona, Barcelona, Spain
| | | | - Luisa Chiapparini
- Department of Neuroradiology, IRCCS Foundation C. Besta Neurological Institute, Milan, Italy
| | - Barbara Garavaglia
- Molecular Neurogenetics Unit, Movement Disorders Diagnostic Section, IRCCS Foundation C. Besta Neurological Institute, Milan, Italy
| | - Simona Orcesi
- Child Neurology and Psychiatry Unit, IRCCS Mondino Foundation, Pavia, Italy
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Adams Oliver syndrome with cerebellar cortical dysplasia. Childs Nerv Syst 2018; 34:1109-1110. [PMID: 29680918 DOI: 10.1007/s00381-018-3810-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Accepted: 04/17/2018] [Indexed: 10/17/2022]
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Yang C, Gomez A, Haldipur A, Berquist W, Bass D. Growing Concerns: A 3-Year-Old Girl with Multiple Hepatic Masses and Gastrointestinal Bleeding. Dig Dis Sci 2018. [PMID: 28646285 DOI: 10.1007/s10620-017-4644-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/09/2022]
Affiliation(s)
- Christine Yang
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Lucile Packard Children's Hospital Stanford, Palo Alto, CA, USA.
| | - Adam Gomez
- Department of Pathology, Stanford University School of Medicine, Stanford, CA, USA
| | - Anshul Haldipur
- Department of Radiology, Stanford University School of Medicine, Stanford, CA, USA
| | - William Berquist
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Lucile Packard Children's Hospital Stanford, Palo Alto, CA, USA
| | - Dorsey Bass
- Division of Pediatric Gastroenterology, Hepatology, and Nutrition, Department of Pediatrics, Lucile Packard Children's Hospital Stanford, Palo Alto, CA, USA
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Salazar JL, Yamamoto S. Integration of Drosophila and Human Genetics to Understand Notch Signaling Related Diseases. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 2018; 1066:141-185. [PMID: 30030826 PMCID: PMC6233323 DOI: 10.1007/978-3-319-89512-3_8] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Notch signaling research dates back to more than one hundred years, beginning with the identification of the Notch mutant in the fruit fly Drosophila melanogaster. Since then, research on Notch and related genes in flies has laid the foundation of what we now know as the Notch signaling pathway. In the 1990s, basic biological and biochemical studies of Notch signaling components in mammalian systems, as well as identification of rare mutations in Notch signaling pathway genes in human patients with rare Mendelian diseases or cancer, increased the significance of this pathway in human biology and medicine. In the 21st century, Drosophila and other genetic model organisms continue to play a leading role in understanding basic Notch biology. Furthermore, these model organisms can be used in a translational manner to study underlying mechanisms of Notch-related human diseases and to investigate the function of novel disease associated genes and variants. In this chapter, we first briefly review the major contributions of Drosophila to Notch signaling research, discussing the similarities and differences between the fly and human pathways. Next, we introduce several biological contexts in Drosophila in which Notch signaling has been extensively characterized. Finally, we discuss a number of genetic diseases caused by mutations in genes in the Notch signaling pathway in humans and we expand on how Drosophila can be used to study rare genetic variants associated with these and novel disorders. By combining modern genomics and state-of-the art technologies, Drosophila research is continuing to reveal exciting biology that sheds light onto mechanisms of disease.
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Affiliation(s)
- Jose L Salazar
- Department of Molecular and Human Genetics, Baylor College of Medicine (BCM), Houston, TX, USA
| | - Shinya Yamamoto
- Department of Molecular and Human Genetics, Baylor College of Medicine (BCM), Houston, TX, USA.
- Program in Developmental Biology, BCM, Houston, TX, USA.
- Department of Neuroscience, BCM, Houston, TX, USA.
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA.
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