1
|
Chowdhury IR, Viktorova E, Samal SK, Belov GA. The effect of 5' and 3' non-translated regions on the expression of a transgene from a Newcastle disease virus vector. Virus Res 2024; 341:199309. [PMID: 38181903 PMCID: PMC10818242 DOI: 10.1016/j.virusres.2024.199309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Revised: 12/25/2023] [Accepted: 01/03/2024] [Indexed: 01/07/2024]
Abstract
Newcastle disease virus (NDV) is an avian virus and a promising vector for the development of vaccines for veterinary and human use. The optimal vaccine vector performance requires a stable high-level expression of a transgene. The foreign genes are usually incorporated in the genome of NDV as individual transcription units, whose transcription and subsequent translation of the mRNA are regulated by the 5' and 3' untranslated regions (UTRs) flanking the open reading frame of the transgene. Here, we investigated if the UTRs derived from the cognate NDV genes would increase the expression of a model protective antigene from an NDV vector. Our results show that in chicken DF1 cells, none of the UTRs tested significantly outperformed generic short sequences flanking the transgene, while in human HeLa cells, UTRs derived from the M gene of NDV statistically significantly increased the expression of the transgene. The UTRs derived from the HN gene significantly downregulated the transgene expression in both cell cultures. Further experiments demonstrated that NDV UTRs differently affect the mRNA abundance and translation efficacy. While both M and HN UTRs decreased the level of the transgene mRNA in infected cells compared to the mRNA flanked by generic UTRs, M, and particularly, HN UTRs strongly increased the mRNA translation efficacy. The major determinants of translation enhancement are localized in the 5'UTR of HN. Thus, our data reveal a direct role of NDV UTRs in translational regulation, and inform future optimization of NDV vectors for vaccine and therapeutic use.
Collapse
Affiliation(s)
- Ishita Roy Chowdhury
- Virginia-Maryland College of Veterinary Medicine and the Department of Veterinary Medicine, University of Maryland, College Park, MD, USA
| | - Ekaterina Viktorova
- Virginia-Maryland College of Veterinary Medicine and the Department of Veterinary Medicine, University of Maryland, College Park, MD, USA
| | - Siba K Samal
- Virginia-Maryland College of Veterinary Medicine and the Department of Veterinary Medicine, University of Maryland, College Park, MD, USA
| | - George A Belov
- Virginia-Maryland College of Veterinary Medicine and the Department of Veterinary Medicine, University of Maryland, College Park, MD, USA.
| |
Collapse
|
2
|
Khoreva A, Pomerantseva E, Belova N, Povolotskaya I, Konovalov F, Kaimonov V, Gavrina A, Zimin S, Pershin D, Davydova N, Burlakov V, Viktorova E, Roppelt A, Kalinina E, Novichkova G, Shcherbina A. Complex Multisystem Phenotype With Immunodeficiency Associated With NBAS Mutations: Reports of Three Patients and Review of the Literature. Front Pediatr 2020; 8:577. [PMID: 33042920 PMCID: PMC7522312 DOI: 10.3389/fped.2020.00577] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/16/2020] [Accepted: 08/06/2020] [Indexed: 11/20/2022] Open
Abstract
Objectives: Mutations in the neuroblastoma-amplified sequence (NBAS) gene were originally described in patients with skeletal dysplasia or isolated liver disease of variable severity. Subsequent publications reported a more complex phenotype. Among multisystemic clinical symptoms, we were particularly interested in the immunological consequences of the NBAS deficiency. Methods: Clinical and laboratory data of 3 patients ages 13, 6, and 5 in whom bi-allelic NBAS mutations had been detected via next-generation sequencing were characterized. Literature review of 23 publications describing 74 patients was performed. Results: We report three Russian patients with compound heterozygous mutations of the NBAS gene who had combined immunodeficiency characterized by hypogammaglobulinemia, low T-cells, and near-absent B-cells, along with liver disease, skeletal dysplasia, optic-nerve atrophy, and dysmorphic features. Analysis of the data of 74 previously reported patients who carried various NBAS mutations demonstrated that although the most severe form of liver disease seems to require disruption of the N-terminal or middle part of NBAS, mutations of variable localizations in the gene have been associated with some form of liver disease, as well as immunological disorders. Conclusions: NBAS deficiency has a broad phenotype, and referral to an immunologist should be made in order to screen for immunodeficiency.
Collapse
Affiliation(s)
- Anna Khoreva
- Dmitry Rogachev National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | | | | | - Inna Povolotskaya
- Genetics and Reproductive Medicine Center "GENETICO" Ltd., Moscow, Russia.,Veltischev Research and Clinical Institute of Pediatrics, Pirogov Russian National Research Medical University, Moscow, Russia
| | | | - Vladimir Kaimonov
- Genetics and Reproductive Medicine Center "GENETICO" Ltd., Moscow, Russia
| | - Alena Gavrina
- Center of Inborn Pathology, GMS Clinic, Moscow, Russia
| | | | - Dmitrii Pershin
- Dmitry Rogachev National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | | | - Vasilii Burlakov
- Dmitry Rogachev National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Ekaterina Viktorova
- Dmitry Rogachev National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Anna Roppelt
- Dmitry Rogachev National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Ekaterina Kalinina
- Dmitry Rogachev National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Galina Novichkova
- Dmitry Rogachev National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| | - Anna Shcherbina
- Dmitry Rogachev National Research and Clinical Center for Pediatric Hematology, Oncology and Immunology, Moscow, Russia
| |
Collapse
|
3
|
Bhatt JM, Hancock W, Meissner JM, Kaczmarczyk A, Lee E, Viktorova E, Ramanadham S, Belov GA, Sztul E. Promiscuity of the catalytic Sec7 domain within the guanine nucleotide exchange factor GBF1 in ARF activation, Golgi homeostasis, and effector recruitment. Mol Biol Cell 2019; 30:1523-1535. [PMID: 30943106 PMCID: PMC6724685 DOI: 10.1091/mbc.e18-11-0711] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
The integrity of the Golgi and trans-Golgi network (TGN) is disrupted by brefeldin A (BFA), which inhibits the Golgi-localized BFA-sensitive factor (GBF1) and brefeldin A-inhibited guanine nucleotide-exchange factors (BIG1 and BIG2). Using a cellular replacement assay to assess GBF1 functionality without interference from the BIGs, we show that GBF1 alone maintains Golgi architecture; facilitates secretion; activates ADP-ribosylation factor (ARF)1, 3, 4, and 5; and recruits ARF effectors to Golgi membranes. Unexpectedly, GBF1 also supports TGN integrity and recruits numerous TGN-localized ARF effectors. The impact of the catalytic Sec7 domain (Sec7d) on GBF1 functionality was assessed by swapping it with the Sec7d from ARF nucleotide-binding site opener (ARNO)/cytohesin-2, a plasma membrane GEF reported to activate all ARFs. The resulting chimera (GBF1-ARNO-GBF1 [GARG]) targets like GBF1, supports Golgi/TGN architecture, and facilitates secretion. However, unlike GBF1, GARG activates all ARFs (including ARF6) at the Golgi/TGN and recruits additional ARF effectors to the Golgi/TGN. Our results have general implications: 1) GEF's targeting is independent of Sec7d, but Sec7d influence the GEF substrate specificity and downstream effector events; 2) all ARFs have access to all membranes, but are restricted in their distribution by the localization of their activating GEFs; and 3) effector association with membranes requires the coincidental presence of activated ARFs and specific membrane identifiers.
Collapse
Affiliation(s)
- Jay M Bhatt
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - William Hancock
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Justyna M Meissner
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Aneta Kaczmarczyk
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Eunjoo Lee
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294
| | - Ekaterina Viktorova
- Department of Veterinary Medicine, Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20742
| | - Sasanka Ramanadham
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294.,Comprehensive Diabetes Center, University of Alabama at Birmingham, Birmingham, AL 35294
| | - George A Belov
- Department of Veterinary Medicine, Virginia-Maryland Regional College of Veterinary Medicine, University of Maryland, College Park, MD 20742
| | - Elizabeth Sztul
- Department of Cell, Developmental and Integrative Biology, University of Alabama at Birmingham, Birmingham, AL 35294
| |
Collapse
|
4
|
Golparian D, Brilene T, Laaring Y, Viktorova E, Johansson E, Domeika M, Unemo M. First antimicrobial resistance data and genetic characteristics of Neisseria gonorrhoeae isolates from Estonia, 2009-2013. New Microbes New Infect 2014; 2:150-3. [PMID: 25356365 PMCID: PMC4184480 DOI: 10.1002/nmi2.57] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2014] [Revised: 05/12/2014] [Accepted: 06/25/2014] [Indexed: 11/18/2022] Open
Abstract
Gonorrhoea is a sexually transmitted infection with major public health implications and Neisseria gonorrhoeae has developed resistance to all antimicrobials introduced for treatment. Enhanced surveillance of antimicrobial resistance in N. gonorrhoeae is crucial globally. This is the first internationally reported antimicrobial resistance data for N. gonorrhoeae from Estonia (44 isolates cultured in 2009–2013). A high prevalence of resistance was observed for azithromycin, ciprofloxacin and tetracycline. One and two isolates with resistance and decreased susceptibility to the last remaining first-line treatment option ceftriaxone, respectively, were identified. It is crucial to implement surveillance of gonococcal antimicrobial resistance (ideally also treatment failures) in Estonia.
Collapse
Affiliation(s)
- D Golparian
- WHO Collaborating Centre for Gonorrhoea and other Sexually Transmitted Infections, National Reference Laboratory for Pathogenic Neisseria, Department of Laboratory Medicine, Microbiology, Örebro University Hospital Örebro, Sweden
| | - T Brilene
- Department of Microbiology, University of Tartu Tartu, Estonia
| | | | - E Viktorova
- Central Laboratory of Communicable Diseases, Estonian Health Board Tallinn, Estonia
| | - E Johansson
- WHO Collaborating Centre for Gonorrhoea and other Sexually Transmitted Infections, National Reference Laboratory for Pathogenic Neisseria, Department of Laboratory Medicine, Microbiology, Örebro University Hospital Örebro, Sweden
| | - M Domeika
- Department of Prevention and Control of Communicable Diseases, Uppsala County Council Uppsala, Sweden
| | - M Unemo
- WHO Collaborating Centre for Gonorrhoea and other Sexually Transmitted Infections, National Reference Laboratory for Pathogenic Neisseria, Department of Laboratory Medicine, Microbiology, Örebro University Hospital Örebro, Sweden
| |
Collapse
|
5
|
Kozlova A, Konovalov D, Abramov D, Mitrofanova A, Kislyakov A, Roshchin V, Miakova N, Smirnova I, Viktorova E, Maschan A, Shcherbina A. THU0447 Insufficient Efficacy of Tocilizumab Therapy in Children with Castleman’s Disease. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2013-eular.975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
|
6
|
Sarkar J, Gou D, Turaka P, Viktorova E, Ramchandran R, Raj JU. MicroRNA-21 plays a role in hypoxia-mediated pulmonary artery smooth muscle cell proliferation and migration. Am J Physiol Lung Cell Mol Physiol 2010; 299:L861-71. [PMID: 20693317 PMCID: PMC3006273 DOI: 10.1152/ajplung.00201.2010] [Citation(s) in RCA: 167] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2010] [Accepted: 08/03/2010] [Indexed: 12/18/2022] Open
Abstract
Hypoxia stimulates pulmonary artery smooth muscle cell (PASMC) proliferation. Recent studies have implicated an important role for microRNAs (miRNAs) in hypoxia-mediated responses in various cellular processes, including cell proliferation. In this study, we investigated the role of microRNA-21 (miR-21) in hypoxia-induced PASMC proliferation and migration. We first demonstrated that miR-21 expression increased by ∼3-fold in human PASMC after 6 h of hypoxia (3% O₂) and remained high (∼2-fold) after 24 h of hypoxia. Knockdown of miR-21 with anti-miR-21 inhibitors significantly reduced hypoxia-induced cell proliferation, whereas miR-21 overexpression in normoxia enhanced cell proliferation. We also found that miR-21 is essential for hypoxia-induced cell migration. Protein expression of miR-21 target genes, specifically programmed cell death protein 4 (PDCD4), Sprouty 2 (SPRY2), and peroxisome proliferator-activated receptor-α (PPARα), was decreased in hypoxia and in PASMC overexpressing miR-21 in normoxia and increased in hypoxic cells in which miR-21 was knocked down. In addition, PPARα 3'-untranslated region (UTR) luciferase-based reporter gene assays demonstrated that PPARα is a direct target of miR-21. Taken together, our findings indicate that miR-21 plays a significant role in hypoxia-induced pulmonary vascular smooth muscle cell proliferation and migration by regulating multiple gene targets.
Collapse
Affiliation(s)
- Joy Sarkar
- Dept. of Pediatrics, University of Illinois College of Medicine at Chicago, 60612, USA.
| | | | | | | | | | | |
Collapse
|