Discovery of the First Genome-Wide Significant Risk Loci for Attention Deficit/Hyperactivity Disorder
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Analysis of Trans Esnps Infers Regulatory Network Architecture
Analysis of trans eSNPs infers regulatory network architecture Anat Kreimer Submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the Graduate School of Arts and Sciences COLUMBIA UNIVERSITY 2014 © 2014 Anat Kreimer All rights reserved ABSTRACT Analysis of trans eSNPs infers regulatory network architecture Anat Kreimer eSNPs are genetic variants associated with transcript expression levels. The characteristics of such variants highlight their importance and present a unique opportunity for studying gene regulation. eSNPs affect most genes and their cell type specificity can shed light on different processes that are activated in each cell. They can identify functional variants by connecting SNPs that are implicated in disease to a molecular mechanism. Examining eSNPs that are associated with distal genes can provide insights regarding the inference of regulatory networks but also presents challenges due to the high statistical burden of multiple testing. Such association studies allow: simultaneous investigation of many gene expression phenotypes without assuming any prior knowledge and identification of unknown regulators of gene expression while uncovering directionality. This thesis will focus on such distal eSNPs to map regulatory interactions between different loci and expose the architecture of the regulatory network defined by such interactions. We develop novel computational approaches and apply them to genetics-genomics data in human. We go beyond pairwise interactions to define network motifs, including regulatory modules and bi-fan structures, showing them to be prevalent in real data and exposing distinct attributes of such arrangements. We project eSNP associations onto a protein-protein interaction network to expose topological properties of eSNPs and their targets and highlight different modes of distal regulation. -
A Computational Approach for Defining a Signature of Β-Cell Golgi Stress in Diabetes Mellitus
Page 1 of 781 Diabetes A Computational Approach for Defining a Signature of β-Cell Golgi Stress in Diabetes Mellitus Robert N. Bone1,6,7, Olufunmilola Oyebamiji2, Sayali Talware2, Sharmila Selvaraj2, Preethi Krishnan3,6, Farooq Syed1,6,7, Huanmei Wu2, Carmella Evans-Molina 1,3,4,5,6,7,8* Departments of 1Pediatrics, 3Medicine, 4Anatomy, Cell Biology & Physiology, 5Biochemistry & Molecular Biology, the 6Center for Diabetes & Metabolic Diseases, and the 7Herman B. Wells Center for Pediatric Research, Indiana University School of Medicine, Indianapolis, IN 46202; 2Department of BioHealth Informatics, Indiana University-Purdue University Indianapolis, Indianapolis, IN, 46202; 8Roudebush VA Medical Center, Indianapolis, IN 46202. *Corresponding Author(s): Carmella Evans-Molina, MD, PhD ([email protected]) Indiana University School of Medicine, 635 Barnhill Drive, MS 2031A, Indianapolis, IN 46202, Telephone: (317) 274-4145, Fax (317) 274-4107 Running Title: Golgi Stress Response in Diabetes Word Count: 4358 Number of Figures: 6 Keywords: Golgi apparatus stress, Islets, β cell, Type 1 diabetes, Type 2 diabetes 1 Diabetes Publish Ahead of Print, published online August 20, 2020 Diabetes Page 2 of 781 ABSTRACT The Golgi apparatus (GA) is an important site of insulin processing and granule maturation, but whether GA organelle dysfunction and GA stress are present in the diabetic β-cell has not been tested. We utilized an informatics-based approach to develop a transcriptional signature of β-cell GA stress using existing RNA sequencing and microarray datasets generated using human islets from donors with diabetes and islets where type 1(T1D) and type 2 diabetes (T2D) had been modeled ex vivo. To narrow our results to GA-specific genes, we applied a filter set of 1,030 genes accepted as GA associated. -
Multiplexed Engineering Glycosyltransferase Genes in CHO Cells Via Targeted Integration for Producing Antibodies with Diverse Complex‑Type N‑Glycans Ngan T
www.nature.com/scientificreports OPEN Multiplexed engineering glycosyltransferase genes in CHO cells via targeted integration for producing antibodies with diverse complex‑type N‑glycans Ngan T. B. Nguyen, Jianer Lin, Shi Jie Tay, Mariati, Jessna Yeo, Terry Nguyen‑Khuong & Yuansheng Yang* Therapeutic antibodies are decorated with complex‑type N‑glycans that signifcantly afect their biodistribution and bioactivity. The N‑glycan structures on antibodies are incompletely processed in wild‑type CHO cells due to their limited glycosylation capacity. To improve N‑glycan processing, glycosyltransferase genes have been traditionally overexpressed in CHO cells to engineer the cellular N‑glycosylation pathway by using random integration, which is often associated with large clonal variations in gene expression levels. In order to minimize the clonal variations, we used recombinase‑mediated‑cassette‑exchange (RMCE) technology to overexpress a panel of 42 human glycosyltransferase genes to screen their impact on antibody N‑linked glycosylation. The bottlenecks in the N‑glycosylation pathway were identifed and then released by overexpressing single or multiple critical genes. Overexpressing B4GalT1 gene alone in the CHO cells produced antibodies with more than 80% galactosylated bi‑antennary N‑glycans. Combinatorial overexpression of B4GalT1 and ST6Gal1 produced antibodies containing more than 70% sialylated bi‑antennary N‑glycans. In addition, antibodies with various tri‑antennary N‑glycans were obtained for the frst time by overexpressing MGAT5 alone or in combination with B4GalT1 and ST6Gal1. The various N‑glycan structures and the method for producing them in this work provide opportunities to study the glycan structure‑and‑function and develop novel recombinant antibodies for addressing diferent therapeutic applications. -
A Peripheral Blood Gene Expression Signature to Diagnose Subclinical Acute Rejection
CLINICAL RESEARCH www.jasn.org A Peripheral Blood Gene Expression Signature to Diagnose Subclinical Acute Rejection Weijia Zhang,1 Zhengzi Yi,1 Karen L. Keung,2 Huimin Shang,3 Chengguo Wei,1 Paolo Cravedi,1 Zeguo Sun,1 Caixia Xi,1 Christopher Woytovich,1 Samira Farouk,1 Weiqing Huang,1 Khadija Banu,1 Lorenzo Gallon,4 Ciara N. Magee,5 Nader Najafian,5 Milagros Samaniego,6 Arjang Djamali ,7 Stephen I. Alexander,2 Ivy A. Rosales,8 Rex Neal Smith,8 Jenny Xiang,3 Evelyne Lerut,9 Dirk Kuypers,10,11 Maarten Naesens ,10,11 Philip J. O’Connell,2 Robert Colvin,8 Madhav C. Menon,1 and Barbara Murphy1 Due to the number of contributing authors, the affiliations are listed at the end of this article. ABSTRACT Background In kidney transplant recipients, surveillance biopsies can reveal, despite stable graft function, histologic features of acute rejection and borderline changes that are associated with undesirable graft outcomes. Noninvasive biomarkers of subclinical acute rejection are needed to avoid the risks and costs associated with repeated biopsies. Methods We examined subclinical histologic and functional changes in kidney transplant recipients from the prospective Genomics of Chronic Allograft Rejection (GoCAR) study who underwent surveillance biopsies over 2 years, identifying those with subclinical or borderline acute cellular rejection (ACR) at 3 months (ACR-3) post-transplant. We performed RNA sequencing on whole blood collected from 88 indi- viduals at the time of 3-month surveillance biopsy to identify transcripts associated with ACR-3, developed a novel sequencing-based targeted expression assay, and validated this gene signature in an independent cohort. -
1471-2105-8-217.Pdf
BMC Bioinformatics BioMed Central Software Open Access GenMAPP 2: new features and resources for pathway analysis Nathan Salomonis1,2, Kristina Hanspers1, Alexander C Zambon1, Karen Vranizan1,3, Steven C Lawlor1, Kam D Dahlquist4, Scott W Doniger5, Josh Stuart6, Bruce R Conklin1,2,7,8 and Alexander R Pico*1 Address: 1Gladstone Institute of Cardiovascular Disease, 1650 Owens Street, San Francisco, CA 94158 USA, 2Pharmaceutical Sciences and Pharmacogenomics Graduate Program, University of California, 513 Parnassus Avenue, San Francisco, CA 94143, USA, 3Functional Genomics Laboratory, University of California, Berkeley, CA 94720 USA, 4Department of Biology, Loyola Marymount University, 1 LMU Drive, MS 8220, Los Angeles, CA 90045 USA, 5Computational Biology Graduate Program, Washington University School of Medicine, St. Louis, MO 63108 USA, 6Department of Biomolecular Engineering, University of California, Santa Cruz, CA 95064 USA, 7Department of Medicine, University of California, San Francisco, CA 94143 USA and 8Department of Molecular and Cellular Pharmacology, University of California, San Francisco, CA 94143 USA Email: Nathan Salomonis - [email protected]; Kristina Hanspers - [email protected]; Alexander C Zambon - [email protected]; Karen Vranizan - [email protected]; Steven C Lawlor - [email protected]; Kam D Dahlquist - [email protected]; Scott W Doniger - [email protected]; Josh Stuart - [email protected]; Bruce R Conklin - [email protected]; Alexander R Pico* - [email protected] * Corresponding author Published: 24 June 2007 Received: 16 November 2006 Accepted: 24 June 2007 BMC Bioinformatics 2007, 8:217 doi:10.1186/1471-2105-8-217 This article is available from: http://www.biomedcentral.com/1471-2105/8/217 © 2007 Salomonis et al; licensee BioMed Central Ltd. -
Glycosyltransferase B4GALNT2 As a Predictor of Good Prognosis in Colon Cancer: Lessons from Databases
International Journal of Molecular Sciences Article Glycosyltransferase B4GALNT2 as a Predictor of Good Prognosis in Colon Cancer: Lessons from Databases Michela Pucci, Nadia Malagolini and Fabio Dall’Olio * Department of Experimental, Diagnostic and Specialty Medicine (DIMES), General Pathology Building, University of Bologna, Via San Giacomo 14, 40126 Bologna, Italy; [email protected] (M.P.); [email protected] (N.M.) * Correspondence: [email protected]; Tel.: +39-051-2094704 Abstract: Background: glycosyltransferase B4GALNT2 and its cognate carbohydrate antigen Sda are highly expressed in normal colon but strongly downregulated in colorectal carcinoma (CRC). We previously showed that CRC patients expressing higher B4GALNT2 mRNA levels displayed longer survival. Forced B4GALNT2 expression reduced the malignancy and stemness of colon cancer cells. Methods: Kaplan–Meier survival curves were determined in “The Cancer Genome Atlas” (TCGA) COAD cohort for several glycosyltransferases, oncogenes, and tumor suppressor genes. Whole expression data of coding genes as well as miRNA and methylation data for B4GALNT2 were downloaded from TCGA. Results: the prognostic potential of B4GALNT2 was the best among the glycosyltransferases tested and better than that of many oncogenes and tumor suppressor genes; high B4GALNT2 expression was associated with a lower malignancy gene expression profile; differential methylation of an intronic B4GALNT2 gene position and miR-204-5p expression play major roles in B4GALNT2 regulation. Conclusions: high B4GALNT2 expression is a strong predictor of good prognosis in CRC as a part of a wider molecular signature that includes ZG16, ITLN1, BEST2, and Citation: Pucci, M.; Malagolini, N.; GUCA2B. Differential DNA methylation and miRNA expression contribute to regulating B4GALNT2 Dall’Olio, F. -
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BASIC RESEARCH www.jasn.org Phosphoproteomic Analysis Reveals Regulatory Mechanisms at the Kidney Filtration Barrier †‡ †| Markus M. Rinschen,* Xiongwu Wu,§ Tim König, Trairak Pisitkun,¶ Henning Hagmann,* † † † Caroline Pahmeyer,* Tobias Lamkemeyer, Priyanka Kohli,* Nicole Schnell, †‡ †† ‡‡ Bernhard Schermer,* Stuart Dryer,** Bernard R. Brooks,§ Pedro Beltrao, †‡ Marcus Krueger,§§ Paul T. Brinkkoetter,* and Thomas Benzing* *Department of Internal Medicine II, Center for Molecular Medicine, †Cologne Excellence Cluster on Cellular Stress | Responses in Aging-Associated Diseases, ‡Systems Biology of Ageing Cologne, Institute for Genetics, University of Cologne, Cologne, Germany; §Laboratory of Computational Biology, National Heart, Lung, and Blood Institute, National Institutes of Health, Bethesda, Maryland; ¶Faculty of Medicine, Chulalongkorn University, Bangkok, Thailand; **Department of Biology and Biochemistry, University of Houston, Houston, Texas; ††Division of Nephrology, Baylor College of Medicine, Houston, Texas; ‡‡European Molecular Biology Laboratory–European Bioinformatics Institute, Hinxton, Cambridge, United Kingdom; and §§Max Planck Institute for Heart and Lung Research, Bad Nauheim, Germany ABSTRACT Diseases of the kidney filtration barrier are a leading cause of ESRD. Most disorders affect the podocytes, polarized cells with a limited capacity for self-renewal that require tightly controlled signaling to maintain their integrity, viability, and function. Here, we provide an atlas of in vivo phosphorylated, glomerulus- expressed -
Genome-Scale Analysis Identifies Paralog Lethality As a Vulnerability of Chromosome 1P Loss in Cancer
HHS Public Access Author manuscript Author ManuscriptAuthor Manuscript Author Nat Genet Manuscript Author . Author manuscript; Manuscript Author available in PMC 2018 December 28. Published in final edited form as: Nat Genet. 2018 July ; 50(7): 937–943. doi:10.1038/s41588-018-0155-3. Genome-scale analysis identifies paralog lethality as a vulnerability of chromosome 1p loss in cancer Srinivas R. Viswanathan1,2,3, Marina F. Nogueira#1,2, Colin G. Buss#4,5, John M. Krill- Burger2, Mathias J. Wawer6, Edyta Malolepsza2,11, Ashton C. Berger1,2, Peter S. Choi1,2,3, Juliann Shih2, Alison M. Taylor1,2,3, Benjamin Tanenbaum2, Chandra Sekhar Pedamallu1, Andrew D. Cherniack2, Pablo Tamayo2,7, Craig A. Strathdee2, Kasper Lage2,11, Steven A. Carr2, Monica Schenone2, Sangeeta N. Bhatia2,3,4,5,8,9,10, Francisca Vazquez2, Aviad Tsherniak2, William C. Hahn1,2,3, and Matthew Meyerson1,2,3,♦ 1Department of Medical Oncology, Dana-Farber Cancer Institute, Boston, MA, USA 2Broad Institute of MIT and Harvard, Cambridge, MA, USA 3Harvard Medical School, Boston, MA, USA 4Harvard-MIT Department of Health Sciences and Technology, Institute for Medical Engineering and Science, Massachusetts Institute of Technology, Boston, MA USA 5Koch Institute for Integrative Cancer Research, Massachusetts Institute of Technology, Cambridge, MA, USA. 6Chemical Biology and Therapeutics Science Program, Broad Institute of Harvard and MIT, Cambridge, MA, USA 7UCSD Moores Cancer Center and Department of Medicine, University of California, San Diego, La Jolla, California 8Howard Hughes -
Regulation and Function of Silayltransferases in Pancreatic Cancer
REGULATION AND FUNCTION OF SILAYLTRANSFERASES IN PANCREATIC CANCER Sònia Bassagañas i Puigdemont Dipòsit legal: Gi. 240-2015 http://hdl.handle.net/10803/285783 ADVERTIMENT. L'accés als continguts d'aquesta tesi doctoral i la seva utilització ha de respectar els drets de la persona autora. Pot ser utilitzada per a consulta o estudi personal, així com en activitats o materials d'investigació i docència en els termes establerts a l'art. 32 del Text Refós de la Llei de Propietat Intel·lectual (RDL 1/1996). Per altres utilitzacions es requereix l'autorització prèvia i expressa de la persona autora. En qualsevol cas, en la utilització dels seus continguts caldrà indicar de forma clara el nom i cognoms de la persona autora i el títol de la tesi doctoral. No s'autoritza la seva reproducció o altres formes d'explotació efectuades amb finalitats de lucre ni la seva comunicació pública des d'un lloc aliè al servei TDX. Tampoc s'autoritza la presentació del seu contingut en una finestra o marc aliè a TDX (framing). Aquesta reserva de drets afecta tant als continguts de la tesi com als seus resums i índexs. ADVERTENCIA. El acceso a los contenidos de esta tesis doctoral y su utilización debe respetar los derechos de la persona autora. Puede ser utilizada para consulta o estudio personal, así como en actividades o materiales de investigación y docencia en los términos establecidos en el art. 32 del Texto Refundido de la Ley de Propiedad Intelectual (RDL 1/1996). Para otros usos se requiere la autorización previa y expresa de la persona autora. -
Nucleocytoplasmic Transport: Regulatory Mechanisms and the Implications in Neurodegeneration
International Journal of Molecular Sciences Review Nucleocytoplasmic Transport: Regulatory Mechanisms and the Implications in Neurodegeneration Baojin Ding * and Masood Sepehrimanesh Department of Biology, University of Louisiana at Lafayette, 410 East Saint Mary Boulevard, Lafayette, LA 70503, USA; [email protected] * Correspondence: [email protected] Abstract: Nucleocytoplasmic transport (NCT) across the nuclear envelope is precisely regulated in eukaryotic cells, and it plays critical roles in maintenance of cellular homeostasis. Accumulating evidence has demonstrated that dysregulations of NCT are implicated in aging and age-related neurodegenerative diseases, including amyotrophic lateral sclerosis (ALS), frontotemporal dementia (FTD), Alzheimer’s disease (AD), and Huntington disease (HD). This is an emerging research field. The molecular mechanisms underlying impaired NCT and the pathogenesis leading to neurodegener- ation are not clear. In this review, we comprehensively described the components of NCT machinery, including nuclear envelope (NE), nuclear pore complex (NPC), importins and exportins, RanGTPase and its regulators, and the regulatory mechanisms of nuclear transport of both protein and transcript cargos. Additionally, we discussed the possible molecular mechanisms of impaired NCT underlying aging and neurodegenerative diseases, such as ALS/FTD, HD, and AD. Keywords: Alzheimer’s disease; amyotrophic lateral sclerosis; Huntington disease; neurodegenera- tive diseases; nuclear pore complex; nucleocytoplasmic transport; Ran GTPase Citation: Ding, B.; Sepehrimanesh, M. Nucleocytoplasmic Transport: Regulatory Mechanisms and the Implications in Neurodegeneration. 1. Introduction Int. J. Mol. Sci. 2021, 22, 4165. As a hallmark of eukaryotic cells, the genetic materials are separated from the cyto- https://doi.org/10.3390/ijms plasmic contents by a highly regulated membrane, called nuclear envelope (NE), which 22084165 has two concentric bilayer membranes, the inner nuclear membrane (INM), and outer nuclear membrane (ONM). -
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SAN TA C RUZ BI OTEC HNOL OG Y, INC . karyopherin 13 (D-8): sc-393661 BACKGROUND APPLICATIONS Belonging to the importin beta family, karyopherin 13 (Kap13), also known as karyopherin 13 (D-8) is recommended for detection of karyopherin 13 of Importin-13 (IPO13) or Ran-binding protein 13, is a 963 amino acid protein that mouse, rat and human origin by Western Blotting (starting dilution 1:100, contains twenty HEAT repeats and one importin N-terminal domain. Localizing dilution range 1:100-1:1000), immunoprecipitation [1-2 µg per 100-500 µg to the nucleus as well as the cytoplasm, karyopherin 13 is expressed in fetal of total protein (1 ml of cell lysate)], immunofluorescence (starting dilution brain, heart, intestine and kidney. Karyopherin 13 acts as a nuclear transport 1:50, dilution range 1:50-1:500) and solid phase ELISA (starting dilution receptor, participating in nuclear protein import and nuclear localization 1:30, dilution range 1:30-1:3000). sig nals (NLS) in cargo substrates, in a Ras-related nuclear protein-GTPase Suitable for use as control antibody for karyopherin 13 siRNA (h): sc-62521, dependent system. Karyopherin 13 mediates the nuclear import and/or export karyopherin 13 siRNA (m): sc-62522, karyopherin 13 shRNA Plasmid (h): of UBC9, the RBM8A/MAGOH complex, Pax-6, eIF1AY and Ran. The gene sc-62521-SH, karyopherin 13 shRNA Plasmid (m): sc-62522-SH, karyopherin 13 encoding karyopherin 13 maps to human chromosome 1p34.1 and mouse shRNA (h) Lentiviral Particles: sc-62521-V and karyopherin 13 shRNA (m) chromosome 4 D2.1. -
TRAPPC9-Related Autosomal Recessive Intellectual Disability: Report of a New Mutation and Clinical Phenotype
European Journal of Human Genetics (2013) 21, 229–232 & 2013 Macmillan Publishers Limited All rights reserved 1018-4813/13 www.nature.com/ejhg SHORT REPORT TRAPPC9-related autosomal recessive intellectual disability: report of a new mutation and clinical phenotype Giuseppe Marangi1, Vincenzo Leuzzi2, Filippo Manti2, Serena Lattante1, Daniela Orteschi1, Vanna Pecile3, Giovanni Neri1 and Marcella Zollino*,1 Intellectual disability (ID) with autosomal recessive (AR) inheritance is believed to be common; however, very little is known about causative genes and genotype–phenotype correlations. The broad genetic heterogeneity of AR-ID, and its usually nonsyndromic nature make it difficult to pool multiple pedigrees with the same underlying genetic defect to achieve consistent nosology. Nearly all autosomal genes responsible for recessive cognitive disorders have been identified in large consanguineous families from the Middle East, and nonsense mutations in TRAPPC9 have been reported in a total of 5. Although several recurrent phenotypic abnormalities are described in some of these patients, the associated phenotype is usually referred to as nonsyndromic. By means of single-nucleotide polymorphism-array first and then by exome sequencing, we identified a new pathogenic mutation in TRAPPC9 in two Italian sisters born to healthy and apparently nonconsanguineous parents. It consists of a homozygous splice site mutation causing exon skipping with frameshift and premature termination, as confirmed by mRNA sequencing. By detailed phenotypic analysis of our patients, and by critical literature review, we found that homozygous TRAPPC9 loss-of-function mutations cause a distinctive phenotype, characterized by peculiar facial appearance, obesity, hypotonia (all signs resembling a Prader–Willi-like phenotype), moderate-to-severe ID, and consistent brain abnormalities.