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Constitutive Scaffolding of Multiple Wnt Enhanceosome Components By
RESEARCH ARTICLE Constitutive scaffolding of multiple Wnt enhanceosome components by Legless/ BCL9 Laurens M van Tienen, Juliusz Mieszczanek, Marc Fiedler, Trevor J Rutherford, Mariann Bienz* MRC Laboratory of Molecular Biology, Cambridge, United Kingdom Abstract Wnt/b-catenin signaling elicits context-dependent transcription switches that determine normal development and oncogenesis. These are mediated by the Wnt enhanceosome, a multiprotein complex binding to the Pygo chromatin reader and acting through TCF/LEF- responsive enhancers. Pygo renders this complex Wnt-responsive, by capturing b-catenin via the Legless/BCL9 adaptor. We used CRISPR/Cas9 genome engineering of Drosophila legless (lgs) and human BCL9 and B9L to show that the C-terminus downstream of their adaptor elements is crucial for Wnt responses. BioID proximity labeling revealed that BCL9 and B9L, like PYGO2, are constitutive components of the Wnt enhanceosome. Wnt-dependent docking of b-catenin to the enhanceosome apparently causes a rearrangement that apposes the BCL9/B9L C-terminus to TCF. This C-terminus binds to the Groucho/TLE co-repressor, and also to the Chip/LDB1-SSDP enhanceosome core complex via an evolutionary conserved element. An unexpected link between BCL9/B9L, PYGO2 and nuclear co-receptor complexes suggests that these b-catenin co-factors may coordinate Wnt and nuclear hormone responses. DOI: 10.7554/eLife.20882.001 *For correspondence: mb2@mrc- Introduction lmb.cam.ac.uk The Wnt/b-catenin signaling cascade is an ancient cell communication pathway that operates con- Competing interests: The text-dependent transcriptional switches to control animal development and tissue homeostasis authors declare that no (Cadigan and Nusse, 1997). -
3.2 Brain White Matter Oedema Due to Clc-2 Chloride Channel Deficiency
3.2 Brain white matter oedema due to ClC-2 chloride channel deficiency: an observational analytical study M Bugiani*, C Depienne*, C Dupuits, D Galanaud, V Touitou, N Postma, C van Berkel, E Polder, E Tollard, F Darios, A Brice, CE de Die-Smulders, JS Vles, A Vanderver, G Uziel, C Yalcinkaya, SG Frints, VM Kalscheuer, J Klooster, M Kamermans, TEM Abbink, NI Wolf, F Sedel** and MS van der Knaap** (*shared first authors; **shared last authors) Lancet Neurol 2013;12:659-668 Summary Background. Mutant mouse models suggest that the chloride channel ClC-2 has functions in ion and water homoeostasis, but this has not been confirmed in human beings. We aimed to define novel disorders characterised by distinct patterns of MRI abnormalities in patients with leukoencephalopathies of unknown origin, and to identify the genes mutated in these disorders. We were specifically interested in leukoencephalopathies characterised by white matter oedema, suggesting a defect in ion and water homoeostasis. Methods. In this observational analytical study, we recruited patients with leukoencephalopathies characterised by MRI signal abnormalities in the posterior limbs of the internal capsules, midbrain cerebral peduncles, and middle cerebellar peduncles from our databases of patients with leukoencephalopathies of unknown origin. We used exome sequencing to identify the gene involved. We screened the candidate gene in additional patients by Sanger sequencing and mRNA analysis, and investigated the functional effects of the mutations. We assessed the localisation of ClC-2 with immunohistochemistry and electron microscopy in post- mortem human brains of individuals without neurological disorders. Findings. Seven patients met our inclusion criteria, three with adult-onset disease and four with childhood-onset disease. -
Universidade Estadual De Campinas Instituto De Biologia
UNIVERSIDADE ESTADUAL DE CAMPINAS INSTITUTO DE BIOLOGIA VERÔNICA APARECIDA MONTEIRO SAIA CEREDA O PROTEOMA DO CORPO CALOSO DA ESQUIZOFRENIA THE PROTEOME OF THE CORPUS CALLOSUM IN SCHIZOPHRENIA CAMPINAS 2016 1 VERÔNICA APARECIDA MONTEIRO SAIA CEREDA O PROTEOMA DO CORPO CALOSO DA ESQUIZOFRENIA THE PROTEOME OF THE CORPUS CALLOSUM IN SCHIZOPHRENIA Dissertação apresentada ao Instituto de Biologia da Universidade Estadual de Campinas como parte dos requisitos exigidos para a obtenção do Título de Mestra em Biologia Funcional e Molecular na área de concentração de Bioquímica. Dissertation presented to the Institute of Biology of the University of Campinas in partial fulfillment of the requirements for the degree of Master in Functional and Molecular Biology, in the area of Biochemistry. ESTE ARQUIVO DIGITAL CORRESPONDE À VERSÃO FINAL DA DISSERTAÇÃO DEFENDIDA PELA ALUNA VERÔNICA APARECIDA MONTEIRO SAIA CEREDA E ORIENTADA PELO DANIEL MARTINS-DE-SOUZA. Orientador: Daniel Martins-de-Souza CAMPINAS 2016 2 Agência(s) de fomento e nº(s) de processo(s): CNPq, 151787/2F2014-0 Ficha catalográfica Universidade Estadual de Campinas Biblioteca do Instituto de Biologia Mara Janaina de Oliveira - CRB 8/6972 Saia-Cereda, Verônica Aparecida Monteiro, 1988- Sa21p O proteoma do corpo caloso da esquizofrenia / Verônica Aparecida Monteiro Saia Cereda. – Campinas, SP : [s.n.], 2016. Orientador: Daniel Martins de Souza. Dissertação (mestrado) – Universidade Estadual de Campinas, Instituto de Biologia. 1. Esquizofrenia. 2. Espectrometria de massas. 3. Corpo caloso. -
The Mineralocorticoid Receptor Leads to Increased Expression of EGFR
www.nature.com/scientificreports OPEN The mineralocorticoid receptor leads to increased expression of EGFR and T‑type calcium channels that support HL‑1 cell hypertrophy Katharina Stroedecke1,2, Sandra Meinel1,2, Fritz Markwardt1, Udo Kloeckner1, Nicole Straetz1, Katja Quarch1, Barbara Schreier1, Michael Kopf1, Michael Gekle1 & Claudia Grossmann1* The EGF receptor (EGFR) has been extensively studied in tumor biology and recently a role in cardiovascular pathophysiology was suggested. The mineralocorticoid receptor (MR) is an important efector of the renin–angiotensin–aldosterone‑system and elicits pathophysiological efects in the cardiovascular system; however, the underlying molecular mechanisms are unclear. Our aim was to investigate the importance of EGFR for MR‑mediated cardiovascular pathophysiology because MR is known to induce EGFR expression. We identifed a SNP within the EGFR promoter that modulates MR‑induced EGFR expression. In RNA‑sequencing and qPCR experiments in heart tissue of EGFR KO and WT mice, changes in EGFR abundance led to diferential expression of cardiac ion channels, especially of the T‑type calcium channel CACNA1H. Accordingly, CACNA1H expression was increased in WT mice after in vivo MR activation by aldosterone but not in respective EGFR KO mice. Aldosterone‑ and EGF‑responsiveness of CACNA1H expression was confrmed in HL‑1 cells by Western blot and by measuring peak current density of T‑type calcium channels. Aldosterone‑induced CACNA1H protein expression could be abrogated by the EGFR inhibitor AG1478. Furthermore, inhibition of T‑type calcium channels with mibefradil or ML218 reduced diameter, volume and BNP levels in HL‑1 cells. In conclusion the MR regulates EGFR and CACNA1H expression, which has an efect on HL‑1 cell diameter, and the extent of this regulation seems to depend on the SNP‑216 (G/T) genotype. -
An Interactive Web Application to Explore Regeneration-Associated Gene Expression and Chromatin Accessibility
Supplementary Materials Regeneration Rosetta: An interactive web application to explore regeneration-associated gene expression and chromatin accessibility Andrea Rau, Sumona P. Dhara, Ava J. Udvadia, Paul L. Auer 1. Table S1. List of cholesterol metabolic genes from MGI database 2. Table S2. List of differentially expressed transcripts during optic nerve regeneration in zebrafish using the MGI cholesterol metabolic gene queries in the Regeneration Rosetta app 3. Table S3. List of transcription factor encoding genes from brain cell bodies following spinal cord injury in lamprey over a course of 12 weeKs 4. Table S4. List of transcription factor encoding genes from spinal cell bodies following spinal cord injury in lamprey over a course of 12 weeks Ensembl ID MGI Gene ID Symbol Name ENSMUSG00000015243 MGI:99607 Abca1 ATP-binding cassette, sub-family A (ABC1), member 1 ENSMUSG00000026944 MGI:99606 Abca2 ATP-binding cassette, sub-family A (ABC1), member 2 ENSMUSG00000024030 MGI:107704 Abcg1 ATP binding cassette subfamily G member 1 ENSMUSG00000026003 MGI:87866 Acadl acyl-Coenzyme A dehydrogenase, long-chain ENSMUSG00000018574 MGI:895149 Acadvl acyl-Coenzyme A dehydrogenase, very long chain ENSMUSG00000038641 MGI:2384785 Akr1d1 aldo-keto reductase family 1, member D1 ENSMUSG00000028553 MGI:1353627 Angptl3 angiopoietin-like 3 ENSMUSG00000031996 MGI:88047 Aplp2 amyloid beta (A4) precursor-like protein 2 ENSMUSG00000032083 MGI:88049 Apoa1 apolipoprotein A-I ENSMUSG00000005681 MGI:88050 Apoa2 apolipoprotein A-II ENSMUSG00000032080 MGI:88051 Apoa4 -
Mouse Cep104 Conditional Knockout Project (CRISPR/Cas9)
https://www.alphaknockout.com Mouse Cep104 Conditional Knockout Project (CRISPR/Cas9) Objective: To create a Cep104 conditional knockout Mouse model (C57BL/6J) by CRISPR/Cas-mediated genome engineering. Strategy summary: The Cep104 gene (NCBI Reference Sequence: NM_177673 ; Ensembl: ENSMUSG00000039523 ) is located on Mouse chromosome 4. 22 exons are identified, with the ATG start codon in exon 2 and the TGA stop codon in exon 22 (Transcript: ENSMUST00000047497). Exon 5~6 will be selected as conditional knockout region (cKO region). Deletion of this region should result in the loss of function of the Mouse Cep104 gene. To engineer the targeting vector, homologous arms and cKO region will be generated by PCR using BAC clone RP23-101G23 as template. Cas9, gRNA and targeting vector will be co-injected into fertilized eggs for cKO Mouse production. The pups will be genotyped by PCR followed by sequencing analysis. Note: Exon 5 starts from about 15.41% of the coding region. The knockout of Exon 5~6 will result in frameshift of the gene. The size of intron 4 for 5'-loxP site insertion: 1291 bp, and the size of intron 6 for 3'-loxP site insertion: 1224 bp. The size of effective cKO region: ~1111 bp. The cKO region does not have any other known gene. Page 1 of 7 https://www.alphaknockout.com Overview of the Targeting Strategy Wildtype allele gRNA region 5' gRNA region 3' 1 3 4 5 6 7 8 22 Targeting vector Targeted allele Constitutive KO allele (After Cre recombination) Legends Exon of mouse Cep104 Homology arm cKO region loxP site Page 2 of 7 https://www.alphaknockout.com Overview of the Dot Plot Window size: 10 bp Forward Reverse Complement Sequence 12 Note: The sequence of homologous arms and cKO region is aligned with itself to determine if there are tandem repeats. -
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. -
A Genetic Dissection of Mitochondrial Respiratory Chain Biogenesis
A GENETIC DISSECTION OF MITOCHONDRIAL RESPIRATORY CHAIN BIOGENESIS An Undergraduate Research Scholars Thesis by AARON GRIFFIN, SARAH THERIAULT, SHRISHIV TIMBALIA Submitted to Honors and Undergraduate Research Texas A&M University in partial fulfillment of the requirements for the designation as an UNDERGRADUATE RESEARCH SCHOLAR Approved by Research Advisor: Dr. Vishal Gohil May 2014 Major: Biochemistry, Genetics Biochemistry Biochemistry TABLE OF CONTENTS Page ABSTRACT .....................................................................................................................................1 CHAPTER I INTRODUCTION ...............................................................................................................3 II MATERIALS AND METHODS .........................................................................................7 Yeast strains, plasmids, and culture conditions .......................................................7 Yeast growth measurements ..................................................................................10 Yeast oxygen consumption and mitochondrial isolation .......................................11 SDS-PAGE and Western blotting ..........................................................................11 Sporulation, tetrad dissection, and genotyping ......................................................12 High-throughput phenotypic analysis of yeast strains ...........................................15 III RESULTS ..........................................................................................................................16 -
Clinical Vignette Novel Bi-Allelic Variants in GJC2 Associated
Clinical Vignette Novel Bi-allelic Variants in GJC2 Associated Pelizaeus- Merzbacher-like Disease 1: Clinical Clues and Differential Diagnosis Veronica Arora, Sapna Sandal, Ishwar Verma Institute of Medical Genetics and Genomics, Sir Ganga Ram Hospital, New Delhi Correspondence to: Dr Ishwar C Verma Email: [email protected] Abstract the environment and did not follow objects. Head titubation was present. There was no facial dys- Hypomyelinating Leukodystrophy-2 (HLD2) or morphism. Anthropometric measurements were Pelizaeus-Merzbacher-like disease 1 (PMLD1) is a as follows: length 82cm (+1.2SD), weight 10.6Kg slowly progressive leukodystrophy characterized (+1.1SD) and head circumference 47.7cm (+1.2SD). by nystagmus, hypotonia, and developmental Central nervous system examination showed bilat- delay. It is a close differential diagnosis for eral pendular nystagmus, axial hypotonia, dystonic Pelizaeus- Merzbacher disease (PMD) and should posturing, and choreo-athetoid movements (Figure be suspected in patients with features of PMD but 1). Deep tendon reflexes were brisk with extensor who are negative on testing for duplication of the plantar responses. The rest of the systemic PLP1 gene. We describe a case of a 16-month-old examination was non-contributory. MRI of the boy with a novel homozygous mutation in the GJC2 brain (axial view) showed diffuse hypo-myelination gene resulting in hypomyelinating leukodystrophy- in the peri-ventricular and sub-cortical area and 2. The clinical clues as well as features of other cerebellar white matter changes (Figure 2). disorders presenting similarly are discussed. Given the presence of hypotonia, brisk reflexes, nystagmus and hypomyelination on MRI, a deletion Clinical description duplication analysis for the PLP1 gene was done which was negative. -
Protein Identities in Evs Isolated from U87-MG GBM Cells As Determined by NG LC-MS/MS
Protein identities in EVs isolated from U87-MG GBM cells as determined by NG LC-MS/MS. No. Accession Description Σ Coverage Σ# Proteins Σ# Unique Peptides Σ# Peptides Σ# PSMs # AAs MW [kDa] calc. pI 1 A8MS94 Putative golgin subfamily A member 2-like protein 5 OS=Homo sapiens PE=5 SV=2 - [GG2L5_HUMAN] 100 1 1 7 88 110 12,03704523 5,681152344 2 P60660 Myosin light polypeptide 6 OS=Homo sapiens GN=MYL6 PE=1 SV=2 - [MYL6_HUMAN] 100 3 5 17 173 151 16,91913397 4,652832031 3 Q6ZYL4 General transcription factor IIH subunit 5 OS=Homo sapiens GN=GTF2H5 PE=1 SV=1 - [TF2H5_HUMAN] 98,59 1 1 4 13 71 8,048185945 4,652832031 4 P60709 Actin, cytoplasmic 1 OS=Homo sapiens GN=ACTB PE=1 SV=1 - [ACTB_HUMAN] 97,6 5 5 35 917 375 41,70973209 5,478027344 5 P13489 Ribonuclease inhibitor OS=Homo sapiens GN=RNH1 PE=1 SV=2 - [RINI_HUMAN] 96,75 1 12 37 173 461 49,94108966 4,817871094 6 P09382 Galectin-1 OS=Homo sapiens GN=LGALS1 PE=1 SV=2 - [LEG1_HUMAN] 96,3 1 7 14 283 135 14,70620005 5,503417969 7 P60174 Triosephosphate isomerase OS=Homo sapiens GN=TPI1 PE=1 SV=3 - [TPIS_HUMAN] 95,1 3 16 25 375 286 30,77169764 5,922363281 8 P04406 Glyceraldehyde-3-phosphate dehydrogenase OS=Homo sapiens GN=GAPDH PE=1 SV=3 - [G3P_HUMAN] 94,63 2 13 31 509 335 36,03039959 8,455566406 9 Q15185 Prostaglandin E synthase 3 OS=Homo sapiens GN=PTGES3 PE=1 SV=1 - [TEBP_HUMAN] 93,13 1 5 12 74 160 18,68541938 4,538574219 10 P09417 Dihydropteridine reductase OS=Homo sapiens GN=QDPR PE=1 SV=2 - [DHPR_HUMAN] 93,03 1 1 17 69 244 25,77302971 7,371582031 11 P01911 HLA class II histocompatibility antigen, -
De Novo SCN1A, SCN8A, and CLCN2 Mutations in Childhood Absence Epilepsy T
Epilepsy Research 154 (2019) 55–61 Contents lists available at ScienceDirect Epilepsy Research journal homepage: www.elsevier.com/locate/epilepsyres De novo SCN1A, SCN8A, and CLCN2 mutations in childhood absence epilepsy T Han Xie, Wenting Su, Jinrui Pei, Yujia Zhang, Kai Gao, Jinliang Li, Xiuwei Ma, Yuehua Zhang, ⁎ Xiru Wu, Yuwu Jiang Department of Pediatrics, Peking University First Hospital, Beijing, China ARTICLE INFO ABSTRACT Keywords: This study aimed to identify monogenic mutations from Chinese patients with childhood absence epilepsy (CAE) Childhood absence epilepsy and summarize their characteristics. A total of 100 patients with CAE were recruited in Peking University First SCN1A Hospital from 2005 to 2016 and underwent telephone and outpatient follow-up review. We used targeted dis- SCN8A ease-specific gene capture sequencing (involving 300 genes) to identify pathogenic variations for these patients. CLCN2 We identified three de novo epilepsy-related gene mutations, including missense mutations of SCN1A (c. 5399 T > A; p. Val1800Asp), SCN8A (c. 2371 G > T; p. Val791Phe), and CLCN2 (c. 481 G > A; p. Gly161Ser), from three patients, separately. All recruited patients presented typical CAE features and good prognosis. To date, CAE has been considered a complex disease caused by multiple susceptibility genes. In this study, we observed that 3% of typical CAE patients had a de novo mutation of a known monogenic epilepsy-related gene. Our study suggests that a significant proportion of typical CAE cases may be monogenic forms of epilepsy. For genetic generalized epilepsies, such as CAE, further studies are needed to clarify the contributions of de novo or inherited rare monogenic coding, noncoding and copy number variants. -
(Pnss) En Genes Candidatos Para Las Características De La Fibra En Alpacas
Revista peruana de biología 26(1): 087 - 094 (2019) Identificación bioinformática de Polimorfismos de doi: http://dx.doi.org/10.15381/rpb.v26i1.15911 ISSN-L 1561-0837; eISSN: 1727-9933 Nucleótido Simple (PNSs) en genes candidatos para Universidad Nacional Mayor de San Marcos las características de la fibra en alpacas (Vicugna pacos) Bioinformatic identification of Single Nucleotide Polymor- Trabajos originales phisms (SNPs) in candidate genes for fiber characteristics in Presentado: 31/07/2018 alpacas (Vicugna pacos) Aceptado: 03/02/2019 Publicado online: 30/03/2019 Correspondencia: 1 *Autor para correspondencia Alvaro Gonzalo Fernández Suárez* , Gustavo Augusto Gutiérrez 1 Universidad Nacional Agraria La Molina. Av. La Reynoso 1, Federico Abel Ponce de León Bravo 2 Molina S/N, Lima 12. 2 University of Minnesota, St. Paul, MN 55108, 1 Universidad Nacional Agraria La Molina, Perú. United States. 2 University of Minnesota, United States. Email AGFS: [email protected] Email GAGR: [email protected] Email FAPLB: [email protected] ORCID FAPdLB: 0000-0001-8645-553X ORCID GAGR: 0000-0002-1896-0048 Citación: Resumen Fernández Suárez A.G., G.A. Gutiérrez Reynoso, El objetivo fue identificar y predecir la ubicación de polimorfismos de nucleótido F.A. Ponce de León Bravo. 2019. Bioinformatic simple (PNSs) en genes relacionados al crecimiento de la fibra. Se realizó el estudio identification of Single Nucleotide Polymorphisms con un total de 31 genes de queratina (KRT9, KRT12, KRT13, KRT14, KRT16, KRT18, (SNPs) in candidate genes for fiber characteristics KRT20, KRT25, KRT1, KRT3, KRT5, KRT6a, KRT6b, KRT6c, KRT7, KRT8, KRT71, KRT80, in alpacas (Vicugna pacos). Revista peruana de KRT31, KRT32, KIRT40, KRT81, KRT82, KRT10, KRT15, KRT17 KRT19, KRT2, KRT4, biología 26(1): 087 - 094 (Febrero 2019).