OPTN Recruitment to a Golgi-Proximal Compartment Regulates Immune Signalling and Cytokine Secretion Thomas O’Loughlin1,2,‡, Antonina J

Total Page:16

File Type:pdf, Size:1020Kb

OPTN Recruitment to a Golgi-Proximal Compartment Regulates Immune Signalling and Cytokine Secretion Thomas O’Loughlin1,2,‡, Antonina J © 2020. Published by The Company of Biologists Ltd | Journal of Cell Science (2020) 133, jcs239822. doi:10.1242/jcs.239822 RESEARCH ARTICLE OPTN recruitment to a Golgi-proximal compartment regulates immune signalling and cytokine secretion Thomas O’Loughlin1,2,‡, Antonina J. Kruppa1, Andre L. R. Ribeiro3,4, James R. Edgar1, Abdulaziz Ghannam3, Andrew M. Smith3,* and Folma Buss1,*,‡ ABSTRACT appears to be a key protein in a range of pathways downstream of Optineurin (OPTN) is a multifunctional protein involved in autophagy TLR3, participating in the innate immune response through the and secretion, as well as nuclear factor κB (NF-κB) and IRF3 secretion of cytokines, acting as a selective autophagy receptor, and κ signalling, and OPTN mutations are associated with several human regulating both NF- B and IRF3 signalling (Slowicka et al., 2016). κ κ diseases. Here, we show that, in response to viral RNA, OPTN NF- B signalling centres around the NF- B transcription factor translocates to foci in the perinuclear region, where it negatively complex which, under non-stimulated conditions, is inhibited κ regulates NF-κB and IRF3 signalling pathways and downstream pro- through binding to I B proteins. In response to stimuli, such as inflammatory cytokine secretion. These OPTN foci consist of a tight TLR3 or RIG-I ligation, the pathway is switched on leading to cluster of small membrane vesicles, which are positive for ATG9A. activation of the IKK complex, composed of two kinase subunits α β Disease mutations in OPTN linked to primary open-angle glaucoma (IKK and IKK ; also known as CHUK and IKBKB, respectively) γ κ (POAG) cause aberrant foci formation in the absence of stimuli, which and a regulatory subunit IKK [IKBKG; also known as NF- B κ correlates with the ability of OPTN to inhibit signalling. By using essential modulator (NEMO)], which phosphorylates I B proteins proximity labelling proteomics, we identify the linear ubiquitin and triggers their subsequent degradation. This degradation releases κ assembly complex (LUBAC), CYLD and TBK1 as part of the OPTN the NF- B complex, allowing it to translocate to the nucleus and interactome and show that these proteins are recruited to this OPTN- induce expression of numerous target genes (Perkins, 2007). An positive perinuclear compartment. Our work uncovers a crucial role additional critical step in this pathway is the linear M1-linked for OPTN in dampening NF-κB and IRF3 signalling through ubiquitylation of NEMO and receptor-interacting protein kinase 1 the sequestration of LUBAC and other positive regulators in this (RIPK1) by the linear ubiquitin assembly complex (LUBAC), viral RNA-induced compartment, leading to altered pro-inflammatory which consists of HOIP (RNF31), HOIL1 (RBCK1) and SHARPIN cytokine secretion. (Gerlach et al., 2011; Kirisako et al., 2006; Tokunaga et al., 2009, 2011). These linear ubiquitin chains can then function as scaffolds KEY WORDS: OPTN, BioID, Functional proteomics, NF-κB, TBK1, to recruit the IKK complex through the ubiquitin binding in ABIN IFN, Linear ubiquitin, LUBAC, ATG9A and NEMO (UBAN) domain of the IKK subunit NEMO (Fujita et al., 2014; Rahighi et al., 2009; Wagner et al., 2008). OPTN is INTRODUCTION highly similar to NEMO, with around 52% sequence similarity, and Pathogen associated molecular patterns (PAMPs) are recognised by shares its linear ubiquitin-binding UBAN domain (Schwamborn pattern recognition receptors (PRRs), such as Toll-like receptors et al., 2000; Wagner et al., 2008). However, unlike NEMO, OPTN (TLRs), and trigger a range of adaptive and innate immune cannot bind to IKKα or IKKβ and therefore cannot rescue NF-κB responses in the host (Takeuchi and Akira, 2010). For example, activity in NEMO-deficient cells (Schwamborn et al., 2000). activation of TLR3 or RIG-I (also known as DDX58) by double- Instead, OPTN appears to antagonise NEMO function by stranded viral RNA activates signalling cascades culminating in the competitively binding to ubiquitylated RIPK1 and can thereby activation of transcription factors including nuclear factor κB inhibit TNFα-induced NF-κB activation (Zhu et al., 2007). In (NF-κB) and IRF3 and gene expression programs composed of addition, OPTN interacts with CYLD, a deubiquitylase (DUB) for pro-inflammatory cytokines (e.g. IL6) and interferons (IFNs), linear and K63 ubiquitin chains, which is able to negatively regulate respectively (Alexopoulou et al., 2001). Optineurin (OPTN) NF-κB signalling via the deubiquitylation of a range of NF-κB signalling proteins including NEMO and RIPK1 (Lork et al., 2017; Nagabhushana et al., 2011). 1Cambridge Institute for Medical Research, The Keith Peters Building, University of Cambridge, Hills Road, Cambridge CB2 0XY, UK. 2Helen Diller Family Alternatively, OPTN can bind to the IKK-related kinase TBK1 or Comprehensive Cancer Center, San Francisco, CA 94158, USA. 3Microbial the E3 ligase TRAF3 to regulate IRF3 activity (Mankouri et al., Diseases, Eastman Dental Institute, University College London, London WC1X 8LD, UK. 4Department of Oral and Maxillofacial Surgery, University Centre of Pará, 2010; Morton et al., 2008). A complex composed of TBK1 and Belém, Brazil. IKKε is activated via TRAF3 downstream of PRRs, such as TLR3 *These authors contributed equally to this work or RIG-I. Once active, the TBK1–IKKε complex can phosphorylate ‡Authors for correspondence ([email protected]; [email protected]) its substrate, IRF3, which subsequently dimerises and translocates to the nucleus to induce expression of target genes T.O., 0000-0002-4783-2352; F.B., 0000-0003-4457-3479 such as type I IFNs (IFNs). Through its interactions with both β This is an Open Access article distributed under the terms of the Creative Commons Attribution TBK1 and TRAF3, OPTN appears to attenuate IFN- production License (https://creativecommons.org/licenses/by/4.0), which permits unrestricted use, (Mankouri et al., 2010). distribution and reproduction in any medium provided that the original work is properly attributed. An increasing number of perturbations in OPTN gene function Handling Editor: Daniel Billadeau have been linked to diseases including primary open-angle Received 30 September 2019; Accepted 14 April 2020 glaucoma (POAG), amyotrophic lateral sclerosis (ALS), Paget’s Journal of Cell Science 1 RESEARCH ARTICLE Journal of Cell Science (2020) 133, jcs239822. doi:10.1242/jcs.239822 disease of bone (PDB) and Crohn’s disease (CD) (Albagha et al., and 2′,3′-cGAMP (cGAMP) were unable to elicit the release of 2010; Maruyama et al., 2010; Rezaie et al., 2002; Smith et al., CXCL8 from RPE cells, illustrating a lack of activation downstream of 2015). A common feature of the role of OPTN in these diseases TLR4, TLR2 and STING (also known as STING1). To determine the appears to be aberrant NF-κB signalling or cytokine secretion complete secretory response of RPE cells downstream of poly(I:C) profiles. Many ALS mutants show a loss of OPTN-mediated NF-κB stimulation, we analysed conditioned medium from unstimulated or suppression (Nakazawa et al., 2016), deficiencies in OPTN poly(I:C)-stimulated RPE cells using quantitative SILAC mass expression increase NF-κB activity and susceptibility to PDB spectrometry. These experiments identified 380 proteins in the (Obaid et al., 2015) and a subset of CD patients with reduced OPTN conditioned medium with 26 showing significant (P<0.05) expression display impaired secretion of TNF-α, IL6 and IFN-γ upregulation (Fig. 1B; Table S1). Among the upregulated proteins (Smith et al., 2015). were well-known pro-inflammatory cytokines, such as CXCL8 and, In this study, we address the role of OPTN in innate immune to a lesser extent, IL6 (Fig. 1B). We validated this data by ELISA and signalling and cytokine secretion, and the mechanism by which found poly(I:C) stimulation resulted in the induction of both CXCL8 perturbation of OPTN function in these processes may contribute to and IL6 protein secretion (Fig. 1Ci,ii). To assess the contribution of human inflammatory disease. We use a retinal pigment epithelial NF-κB signalling in regulation of cytokine secretion, we generated an (RPE) cell model, which is relevant to the role of OPTN in the RPE cell line expressing a NF-κB luciferase reporter. We found that pathogenesis of POAG, and show these cells respond to TLR3 and stimulating these cells with poly(I:C) induced NF-κBpromoter RIG-I ligands, leading to upregulation of OPTN and its activity and a similar elevation in phosphorylated p65 (also known as translocation to perinuclear foci. Our ultrastructural analysis of RELA; an NF-κB subunit) was observed using immunoblot analysis these foci by correlative light and electron microscopy reveals that (Fig. 1Ciii,D). Although no IFNs were detected in the proteomics this compartment consists of a tight cluster of small vesicles, which datasets, we predicted that IRF3 signalling would also be active appear positive for the autophagy protein ATG9A. This downstream of TLR3 (Doyle et al., 2002). Indeed, upon poly(I:C) multispanning membrane protein is present at the Golgi complex stimulation, we observed a rapid phosphorylation of IRF3, an and in clusters of small 30–40 nm vesicles, which are often found in elevation in IFN-β (IFNB1) mRNA levels, and could detect IFNs in close proximity to autophagosomes, but do not appear to be the supernatant at 2 h post-stimulation (Fig. 1Civ,v,D). incorporated into the growing phagophore (Orsi et al., 2012; Young et al., 2006). We demonstrate that wild-type or mutant variants of OPTN translocates
Recommended publications
  • 4-6 Weeks Old Female C57BL/6 Mice Obtained from Jackson Labs Were Used for Cell Isolation
    Methods Mice: 4-6 weeks old female C57BL/6 mice obtained from Jackson labs were used for cell isolation. Female Foxp3-IRES-GFP reporter mice (1), backcrossed to B6/C57 background for 10 generations, were used for the isolation of naïve CD4 and naïve CD8 cells for the RNAseq experiments. The mice were housed in pathogen-free animal facility in the La Jolla Institute for Allergy and Immunology and were used according to protocols approved by the Institutional Animal Care and use Committee. Preparation of cells: Subsets of thymocytes were isolated by cell sorting as previously described (2), after cell surface staining using CD4 (GK1.5), CD8 (53-6.7), CD3ε (145- 2C11), CD24 (M1/69) (all from Biolegend). DP cells: CD4+CD8 int/hi; CD4 SP cells: CD4CD3 hi, CD24 int/lo; CD8 SP cells: CD8 int/hi CD4 CD3 hi, CD24 int/lo (Fig S2). Peripheral subsets were isolated after pooling spleen and lymph nodes. T cells were enriched by negative isolation using Dynabeads (Dynabeads untouched mouse T cells, 11413D, Invitrogen). After surface staining for CD4 (GK1.5), CD8 (53-6.7), CD62L (MEL-14), CD25 (PC61) and CD44 (IM7), naïve CD4+CD62L hiCD25-CD44lo and naïve CD8+CD62L hiCD25-CD44lo were obtained by sorting (BD FACS Aria). Additionally, for the RNAseq experiments, CD4 and CD8 naïve cells were isolated by sorting T cells from the Foxp3- IRES-GFP mice: CD4+CD62LhiCD25–CD44lo GFP(FOXP3)– and CD8+CD62LhiCD25– CD44lo GFP(FOXP3)– (antibodies were from Biolegend). In some cases, naïve CD4 cells were cultured in vitro under Th1 or Th2 polarizing conditions (3, 4).
    [Show full text]
  • The Capacity of Long-Term in Vitro Proliferation of Acute Myeloid
    The Capacity of Long-Term in Vitro Proliferation of Acute Myeloid Leukemia Cells Supported Only by Exogenous Cytokines Is Associated with a Patient Subset with Adverse Outcome Annette K. Brenner, Elise Aasebø, Maria Hernandez-Valladares, Frode Selheim, Frode Berven, Ida-Sofie Grønningsæter, Sushma Bartaula-Brevik and Øystein Bruserud Supplementary Material S2 of S31 Table S1. Detailed information about the 68 AML patients included in the study. # of blasts Viability Proliferation Cytokine Viable cells Change in ID Gender Age Etiology FAB Cytogenetics Mutations CD34 Colonies (109/L) (%) 48 h (cpm) secretion (106) 5 weeks phenotype 1 M 42 de novo 241 M2 normal Flt3 pos 31.0 3848 low 0.24 7 yes 2 M 82 MF 12.4 M2 t(9;22) wt pos 81.6 74,686 low 1.43 969 yes 3 F 49 CML/relapse 149 M2 complex n.d. pos 26.2 3472 low 0.08 n.d. no 4 M 33 de novo 62.0 M2 normal wt pos 67.5 6206 low 0.08 6.5 no 5 M 71 relapse 91.0 M4 normal NPM1 pos 63.5 21,331 low 0.17 n.d. yes 6 M 83 de novo 109 M1 n.d. wt pos 19.1 8764 low 1.65 693 no 7 F 77 MDS 26.4 M1 normal wt pos 89.4 53,799 high 3.43 2746 no 8 M 46 de novo 26.9 M1 normal NPM1 n.d. n.d. 3472 low 1.56 n.d. no 9 M 68 MF 50.8 M4 normal D835 pos 69.4 1640 low 0.08 n.d.
    [Show full text]
  • Genome-Wide Sirna Screen for Mediators of NF-Κb Activation
    Genome-wide siRNA screen for mediators SEE COMMENTARY of NF-κB activation Benjamin E. Gewurza, Fadi Towficb,c,1, Jessica C. Marb,d,1, Nicholas P. Shinnersa,1, Kaoru Takasakia, Bo Zhaoa, Ellen D. Cahir-McFarlanda, John Quackenbushe, Ramnik J. Xavierb,c, and Elliott Kieffa,2 aDepartment of Medicine and Microbiology and Molecular Genetics, Channing Laboratory, Brigham and Women’s Hospital and Harvard Medical School, Boston, MA 02115; bCenter for Computational and Integrative Biology, Massachusetts General Hospital, Harvard Medical School, Boston, MA 02114; cProgram in Medical and Population Genetics, The Broad Institute of Massachusetts Institute of Technology and Harvard, Cambridge, MA 02142; dDepartment of Biostatistics, Harvard School of Public Health, Boston, MA 02115; and eDepartment of Biostatistics and Computational Biology and Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA 02115 Contributed by Elliott Kieff, December 16, 2011 (sent for review October 2, 2011) Although canonical NFκB is frequently critical for cell proliferation, (RIPK1). TRADD engages TNFR-associated factor 2 (TRAF2), survival, or differentiation, NFκB hyperactivation can cause malig- which recruits the ubiquitin (Ub) E2 ligase UBC5 and the E3 nant, inflammatory, or autoimmune disorders. Despite intensive ligases cIAP1 and cIAP2. CIAP1/2 polyubiquitinate RIPK1 and study, mammalian NFκB pathway loss-of-function RNAi analyses TRAF2, which recruit and activate the K63-Ub binding proteins have been limited to specific protein classes. We therefore under- TAB1, TAB2, and TAB3, as well as their associated kinase took a human genome-wide siRNA screen for novel NFκB activa- MAP3K7 (TAK1). TAK1 in turn phosphorylates IKKβ activa- tion pathway components. Using an Epstein Barr virus latent tion loop serines to promote IKK activity (4).
    [Show full text]
  • Noelia Díaz Blanco
    Effects of environmental factors on the gonadal transcriptome of European sea bass (Dicentrarchus labrax), juvenile growth and sex ratios Noelia Díaz Blanco Ph.D. thesis 2014 Submitted in partial fulfillment of the requirements for the Ph.D. degree from the Universitat Pompeu Fabra (UPF). This work has been carried out at the Group of Biology of Reproduction (GBR), at the Department of Renewable Marine Resources of the Institute of Marine Sciences (ICM-CSIC). Thesis supervisor: Dr. Francesc Piferrer Professor d’Investigació Institut de Ciències del Mar (ICM-CSIC) i ii A mis padres A Xavi iii iv Acknowledgements This thesis has been made possible by the support of many people who in one way or another, many times unknowingly, gave me the strength to overcome this "long and winding road". First of all, I would like to thank my supervisor, Dr. Francesc Piferrer, for his patience, guidance and wise advice throughout all this Ph.D. experience. But above all, for the trust he placed on me almost seven years ago when he offered me the opportunity to be part of his team. Thanks also for teaching me how to question always everything, for sharing with me your enthusiasm for science and for giving me the opportunity of learning from you by participating in many projects, collaborations and scientific meetings. I am also thankful to my colleagues (former and present Group of Biology of Reproduction members) for your support and encouragement throughout this journey. To the “exGBRs”, thanks for helping me with my first steps into this world. Working as an undergrad with you Dr.
    [Show full text]
  • Supplementary Materials
    Supplementary materials Supplementary Table S1: MGNC compound library Ingredien Molecule Caco- Mol ID MW AlogP OB (%) BBB DL FASA- HL t Name Name 2 shengdi MOL012254 campesterol 400.8 7.63 37.58 1.34 0.98 0.7 0.21 20.2 shengdi MOL000519 coniferin 314.4 3.16 31.11 0.42 -0.2 0.3 0.27 74.6 beta- shengdi MOL000359 414.8 8.08 36.91 1.32 0.99 0.8 0.23 20.2 sitosterol pachymic shengdi MOL000289 528.9 6.54 33.63 0.1 -0.6 0.8 0 9.27 acid Poricoic acid shengdi MOL000291 484.7 5.64 30.52 -0.08 -0.9 0.8 0 8.67 B Chrysanthem shengdi MOL004492 585 8.24 38.72 0.51 -1 0.6 0.3 17.5 axanthin 20- shengdi MOL011455 Hexadecano 418.6 1.91 32.7 -0.24 -0.4 0.7 0.29 104 ylingenol huanglian MOL001454 berberine 336.4 3.45 36.86 1.24 0.57 0.8 0.19 6.57 huanglian MOL013352 Obacunone 454.6 2.68 43.29 0.01 -0.4 0.8 0.31 -13 huanglian MOL002894 berberrubine 322.4 3.2 35.74 1.07 0.17 0.7 0.24 6.46 huanglian MOL002897 epiberberine 336.4 3.45 43.09 1.17 0.4 0.8 0.19 6.1 huanglian MOL002903 (R)-Canadine 339.4 3.4 55.37 1.04 0.57 0.8 0.2 6.41 huanglian MOL002904 Berlambine 351.4 2.49 36.68 0.97 0.17 0.8 0.28 7.33 Corchorosid huanglian MOL002907 404.6 1.34 105 -0.91 -1.3 0.8 0.29 6.68 e A_qt Magnogrand huanglian MOL000622 266.4 1.18 63.71 0.02 -0.2 0.2 0.3 3.17 iolide huanglian MOL000762 Palmidin A 510.5 4.52 35.36 -0.38 -1.5 0.7 0.39 33.2 huanglian MOL000785 palmatine 352.4 3.65 64.6 1.33 0.37 0.7 0.13 2.25 huanglian MOL000098 quercetin 302.3 1.5 46.43 0.05 -0.8 0.3 0.38 14.4 huanglian MOL001458 coptisine 320.3 3.25 30.67 1.21 0.32 0.9 0.26 9.33 huanglian MOL002668 Worenine
    [Show full text]
  • Identification of Genes Involved in Radioresistance of Nasopharyngeal Carcinoma by Integrating Gene Ontology and Protein-Protein Interaction Networks
    INTERNATIONAL JOURNAL OF ONCOLOGY 40: 85-92, 2012 Identification of genes involved in radioresistance of nasopharyngeal carcinoma by integrating gene ontology and protein-protein interaction networks YA GUO1, XIAO-DONG ZHU1, SONG QU1, LING LI1, FANG SU1, YE LI1, SHI-TING HUANG1 and DAN-RONG LI2 1Department of Radiation Oncology, Cancer Hospital of Guangxi Medical University, Cancer Institute of Guangxi Zhuang Autonomous Region; 2Guang xi Medical Scientific Research Center, Guangxi Medical University, Nanning 530021, P.R. China Received June 15, 2011; Accepted July 29, 2011 DOI: 10.3892/ijo.2011.1172 Abstract. Radioresistance remains one of the important factors become potential biomarkers for predicting NPC response to in relapse and metastasis of nasopharyngeal carcinoma. Thus, it radiotherapy. is imperative to identify genes involved in radioresistance and explore the underlying biological processes in the development Introduction of radioresistance. In this study, we used cDNA microarrays to select differential genes between radioresistant CNE-2R Nasopharyngeal carcinoma (NPC) is a major malignant tumor and parental CNE-2 cell lines. One hundred and eighty-three of the head and neck region and is endemic to Southeast significantly differentially expressed genes (p<0.05) were Asia, especially Guangdong and Guangxi Provinces, and the identified, of which 138 genes were upregulated and 45 genes Mediterranean basin (1,3). Radiotherapy is the major treatment were downregulated in CNE-2R. We further employed publicly modality for nasopharyngeal carcinoma (NPC). However, in available bioinformatics related software, such as GOEAST some cases, it is radioresistant. Although microarray methods and STRING to examine the relationship among differen- have been used to assess genes involved in radioresistance in a tially expressed genes.
    [Show full text]
  • Potential Novel Molecular Targets for Breast Cancer Diagnosis and Treatment
    From DEPARTMENT OF BIOSCIENCES AND NUTRITION Karolinska Institutet, Stockholm, Sweden POTENTIAL NOVEL MOLECULAR TARGETS FOR BREAST CANCER DIAGNOSIS AND TREATMENT Amirhossein Kharman Biz Stockholm 2016 All previously published papers were reproduced with permission from the publisher. Published by Karolinska Institutet. Printed by E-Print AB © Amirhossein Kharman Biz, 2016 ISBN 978-91-7676-353-7 POTENTIAL NOVEL MOLECULAR TARGETS FOR BREAST CANCER DIAGNOSIS AND TREATMENT THESIS FOR DOCTORAL DEGREE (Ph.D.) By Amirhossein Kharman Biz Principal Supervisor: Opponent: Professor Karin Dahlman-Wright Professor Sari Mäkelä Karolinska Institutet Turku University, Finland Department of Biosciences and Nutrition Institute of Biomedicine and Functional Foods Forum Co-supervisor(s): Dr. Hui Gao, Ph.D. Examination Board: Karolinska Institutet Professor Anki Östlund Farrants Department of Biosciences and Nutrition Stockholm University Department of Molecular Biosciences Dr. Kazem Zendehdel, MD, Ph.D. The Wenner-Gren Institute Tehran University of Medical Sciences Cancer Institute of Iran Professor Olle Stål Linköping University Dr. Marie Löf, Ph.D. Department of Clinical and Experimental Karolinska Institutet Medicine, Oncology Department of Biosciences and Nutrition Docent Ola Söderberg Uppsala University Department of Immunology, Genetics and Pathology In the name of Allah, Most Gracious, Most Merciful To my wife, Zahra, and my daughters, Fatemeh and Maryam ABSTRACT Breast cancer possesses the highest incidence among cancers in women worldwide, accounting
    [Show full text]
  • 99633 HOIP/RNF31 (E6M5B) Rabbit Mab
    Revision 1 C 0 2 - t HOIP/RNF31 (E6M5B) Rabbit mAb a e r o t S Orders: 877-616-CELL (2355) [email protected] 3 Support: 877-678-TECH (8324) 3 6 Web: [email protected] 9 www.cellsignal.com 9 # 3 Trask Lane Danvers Massachusetts 01923 USA For Research Use Only. Not For Use In Diagnostic Procedures. Applications: Reactivity: Sensitivity: MW (kDa): Source/Isotype: UniProt ID: Entrez-Gene Id: WB, IP H Endogenous 120 Rabbit IgG Q96EP0 55072 Product Usage Information Application Dilution Western Blotting 1:1000 Immunoprecipitation 1:50 Storage Supplied in 10 mM sodium HEPES (pH 7.5), 150 mM NaCl, 100 µg/ml BSA, 50% glycerol and less than 0.02% sodium azide. Store at –20°C. Do not aliquot the antibody. Specificity / Sensitivity HOIP/RNF31 (E6M5B) Rabbit mAb recognizes endogenous levels of total HOIP/RNF31 protein. Species Reactivity: Human Source / Purification Monoclonal antibody is produced by immunizing animals with a synthetic peptide corresponding to residues near the carboxy terminus of human HOIP/RNF31 protein. Background HOIL-1-interacting protein (HOIP/RNF31), a RING-type E3 ubiquitin ligase, is the catalytic subunit of the Linear Ubiquitin Chain Assembly Complex (LUBAC) that is associated with TNF-R1 (1). Research studies have shown that the LUBAC consists of three subunits: HOIP, HOIL-1L, and Sharpin that facilitate canonical NF-kB activation in response to pro inflammatory cytokines through M1-linked linear ubiquitination of NEMO and RIP1 (2-6). As part of the LUBAC, HOIP has also been implicated in the negative regulation of interferon-mediated antiviral signaling through the suppression of RIG-I activation (7).
    [Show full text]
  • Human Social Genomics in the Multi-Ethnic Study of Atherosclerosis
    Getting “Under the Skin”: Human Social Genomics in the Multi-Ethnic Study of Atherosclerosis by Kristen Monét Brown A dissertation submitted in partial fulfillment of the requirements for the degree of Doctor of Philosophy (Epidemiological Science) in the University of Michigan 2017 Doctoral Committee: Professor Ana V. Diez-Roux, Co-Chair, Drexel University Professor Sharon R. Kardia, Co-Chair Professor Bhramar Mukherjee Assistant Professor Belinda Needham Assistant Professor Jennifer A. Smith © Kristen Monét Brown, 2017 [email protected] ORCID iD: 0000-0002-9955-0568 Dedication I dedicate this dissertation to my grandmother, Gertrude Delores Hampton. Nanny, no one wanted to see me become “Dr. Brown” more than you. I know that you are standing over the bannister of heaven smiling and beaming with pride. I love you more than my words could ever fully express. ii Acknowledgements First, I give honor to God, who is the head of my life. Truly, without Him, none of this would be possible. Countless times throughout this doctoral journey I have relied my favorite scripture, “And we know that all things work together for good, to them that love God, to them who are called according to His purpose (Romans 8:28).” Secondly, I acknowledge my parents, James and Marilyn Brown. From an early age, you two instilled in me the value of education and have been my biggest cheerleaders throughout my entire life. I thank you for your unconditional love, encouragement, sacrifices, and support. I would not be here today without you. I truly thank God that out of the all of the people in the world that He could have chosen to be my parents, that He chose the two of you.
    [Show full text]
  • Supplemental Material
    Supplemental Material Pronounced Cohabitation of Active Immunoglobulin Genes from Three Different Chromosomes in Transcription Factories during Maximal Antibody Synthesis Sung-Kyun Park1, Yougui Xiang1,2, Xin Feng3 and William T. Garrard1,4 1Department of Molecular Biology University of Texas Southwestern Medical Center Dallas, TX 75390, USA. 2Tianjin Research Center of Basic Medical Science Tianjin Medical University Tianjin 300070, Peoples Republic of China 3Depatment of Molecular and Human Genetics Baylor College of Medicine Houston, TX 77030, USA 4Corresponding author E-mail [email protected] Supplemental Figure 1. Transcription factories and features of transcribing Ig gene alleles in plasma cells. (A) Transcribing Ig genes are associated with transcription factories. 3D RNA immuno-FISH results of two independent experiments where data from >100 plasma cell nuclei each were scored. (B) Numbers of transcription factories per plasma cell nucleus. 3D RNA immuno-FISH results where data from 10 plasma cell nuclei were scored. Supplemental Figure 2. Primary transcript signals of Ig genes reflect their gene locus positions in plasma cells. (A-C) Representative sequential 3D RNA and DNA FISH images of the same 0.3 μm optical section of a plasma cell nucleus outlined by white dashed lines. A: [DAPI (blue), Igi-RNA FISH (green) and Ig-DNA FISH (red)]; B: [DAPI (blue), IgHi-RNA FISH (green) and IgH-DNA FISH (red)]; C: [DAPI (blue), IgJi-RNA FISH (green) and IgJ-DNA FISH (red)]. (D) Box and whiskers plot for the distribution of distances between RNA- and DNA-FISH signals for each Ig gene. Data are from 243, 241 and 285 plasma cells for Ig, IgH and IgJ, respectively, analyzed in three independent experiments.
    [Show full text]
  • Epstein–Barr Virus and Virus Human Protein Interaction Maps
    Epstein–Barr virus and virus human protein interaction maps Michael A. Calderwood*, Kavitha Venkatesan†, Li Xing*, Michael R. Chase*, Alexei Vazquez†‡, Amy M. Holthaus*, Alexandra E. Ewence*, Ning Li†, Tomoko Hirozane-Kishikawa†, David E. Hill†, Marc Vidal†§, Elliott Kieff*§, and Eric Johannsen* *Program in Virology, Departments of Medicine and Microbiology and Molecular Genetics, The Channing Laboratory, Harvard Medical School and Brigham and Women’s Hospital, Boston, MA 02115; †Center for Cancer Systems Biology and Department of Cancer Biology, Dana-Farber Cancer Institute, and Department of Genetics, Harvard Medical School, Boston, MA 02115; and ‡The Simons Center for Systems Biology, Institute for Advanced Studies, Princeton, NJ 08540 Contributed by Elliott Kieff, March 14, 2007 (sent for review January 17, 2007) A comprehensive mapping of interactions among Epstein–Barr proteins in replication, core proteins may interact with noncore virus (EBV) proteins and interactions of EBV proteins with human proteins to adapt replication to specific cell types or enable more proteins should provide specific hypotheses and a broad perspec- complex pathophysiologic strategies such as modification of tive on EBV strategies for replication and persistence. Interactions innate or acquired immune responses. For example, recent of EBV proteins with each other and with human proteins were studies of mature EBV virions revealed they contain many assessed by using a stringent high-throughput yeast two-hybrid gamma-specific proteins in the tegument (5). Little is known system. Overall, 43 interactions between EBV proteins and 173 about these proteins; therefore, a more detailed mapping of their interactions between EBV and human proteins were identified. interactions with core herpesvirus proteins, other gamma- EBV–EBV and EBV–human protein interaction, or ‘‘interactome’’ specific proteins, and human proteins is important for under- maps provided a framework for hypotheses of protein function.
    [Show full text]
  • UNIVERSITY of CALIFORNIA, IRVINE Whole Exome Sequencing
    UNIVERSITY OF CALIFORNIA, IRVINE Whole Exome Sequencing Analysis of Individuals with Autism Spectrum Disorder THESIS submitted in partial satisfaction of the requirements for the degree of MASTER OF SCIENCE in Genetic Counseling by Andrea Lynn Procko Thesis Committee: Professor John Jay Gargus, MD, PhD, Chair Professor Pamela Flodman. MSc, MS Professor Moyra Smith, MD, PhD 2016 © 2016 Andrea Lynn Procko DEDICATION For the families who participated in this study and for all the families who let me participate in their care, my sincerest gratitude. ii TABLE OF CONTENTS Page LIST OF FIGURES vi LIST OF TABLES vii ACKNOWLEDGMENTS viii ABSTRACT OF THE THESIS x INTRODUCTION 1 AUTISM SPECTRUM DISORDER 1 CLINICAL PHENOTYPE OF ASD 3 CORE DOMAINS 3 COMORBIDITIES 4 DIAGNOSIS OF ASD 5 ETIOLOGY OF ASD 6 ASD IN THE GENETICS CLINIC 10 EMERGING GENETIC TESTING FOR ASD 12 THE IMPORTANCE OF DETERMINING ETIOLOGY 14 SUMMARY OF RESEARCH PROGRAM 17 AIMS OF THIS STUDY 18 METHODS 19 NEURBIOLOGY AND GENETICS OF AUTISM STUDY 19 iii AIM I: FILTERING AND CHARACTERIZATION OF POTENTIAL DE NOVO 21 VARIANTS AIM II: TARGETED ANALYSIS OF PROBAND BASED ON CLINICAL 25 FINDINGS RESULTS 26 • AIM I: FILTERING AND CHARACTERIZATION OF POTENTIAL DE NOVO VARIANTS 26 DEMOGRAPHICS OF PARTICIPANTS 26 VARIANT FILTERING 27 PRIORITIZED VARIANTS 34 AU0002-0201 34 I. UNC5B 34 AU0005-0202 36 I. ASTN2 36 II. RNF31 38 III. GET4 39 AU0238-0201 40 I. ST6GAL2 40 II. SUFU 42 AUO243-0201 44 I. BMPR1B 44 II. TMEM8A 45 AU0245-0201 46 I. DPF3 46 II. EPHB2 48 III. TYRO3 49 IV.
    [Show full text]