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Deng J, Zhong Z, Geng C, Dai Z, Zheng W, Li Z, Yan Z, Yang J, Deng W, Tan W, Sun H, Li S. Herpes Simplex Type 1 UL43 Multiple Membrane-Spanning Protein Increases Energy Metabolism in Host Cells through Interacting with ARL2. Cells 2022; 11:cells11223594. [PMID: 36429022 PMCID: PMC9688820 DOI: 10.3390/cells11223594] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Revised: 11/05/2022] [Accepted: 11/10/2022] [Indexed: 11/16/2022] Open
Abstract
Non-essential proteins for viral replication affect host cell metabolism, while the function of the UL43 protein of herpes simplex virus 1 (HSV-1) is not clear. Herein, we performed a comprehensive microarray analysis of HUVEC cells infected with HSV-1 and its UL43-deficient mutant and found significant variation in genes associated with cellular energy metabolic pathways. The localization of UL43 protein in host cells and how it affects cellular energy metabolism pathways were further investigated. Internalization analysis showed that the UL43 protein could be endocytosis-mediated by YPLF motif (aa144-147) and localized to mitochondria. At the same time, more ATP was produced by coupling with mitochondrial small G protein ARF-like 2 (ARL2) GTPase, which triggered the phosphorylation of ANT1 (SLC25A4) to affect the opening degree of mitochondrial permeability transition pore (mPTP), and significantly promoted the aerobic oxidation and oxidative phosphorylation of glucose. Our study shows that UL43 mediates the improvement of host cell metabolism after HSV-1 infection. Additionally, UL43 protein could be a valuable ATP-stimulating factor for mammalian cells.
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Affiliation(s)
- Jianshan Deng
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Zhiying Zhong
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Chengxu Geng
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 511436, China
| | - Zhenning Dai
- Guangdong Medical Innovation Platform for Translation of 3D Printing Application, The Third Affiliated Hospital of Southern Medical University, Southern Medical University, Guangzhou 510630, China
- Department of Stomatology, Guangdong Second Traditional Chinese Medicine Hospital, Guangzhou 510095, China
| | - Weihan Zheng
- Guangdong Medical Innovation Platform for Translation of 3D Printing Application, The Third Affiliated Hospital of Southern Medical University, Southern Medical University, Guangzhou 510630, China
| | - Ziyue Li
- Guangdong Medical Innovation Platform for Translation of 3D Printing Application, The Third Affiliated Hospital of Southern Medical University, Southern Medical University, Guangzhou 510630, China
| | - Zi Yan
- Guangdong Medical Innovation Platform for Translation of 3D Printing Application, The Third Affiliated Hospital of Southern Medical University, Southern Medical University, Guangzhou 510630, China
| | - Jiaxin Yang
- Department of Anatomy, Guangdong Provincial Key Laboratory of Digital Medicine and Biomechanics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
| | - Wenfeng Deng
- Guangzhou Women and Children’s Medical Center, Guangzhou Medical University, Guangzhou 510799, China
| | - Wei Tan
- Guangdong Medical Innovation Platform for Translation of 3D Printing Application, The Third Affiliated Hospital of Southern Medical University, Southern Medical University, Guangzhou 510630, China
- Guangxi Key Laboratory of Birth Defects Research and Prevention, Nanning 530005, China
- Correspondence: author: (W.T.); (H.S.); (S.L.)
| | - Hanxiao Sun
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 511436, China
- Correspondence: author: (W.T.); (H.S.); (S.L.)
| | - Shiyu Li
- Institute of Genomic Medicine, College of Pharmacy, Jinan University, Guangzhou 511436, China
- Guangdong Medical Innovation Platform for Translation of 3D Printing Application, The Third Affiliated Hospital of Southern Medical University, Southern Medical University, Guangzhou 510630, China
- Department of Anatomy, Guangdong Provincial Key Laboratory of Digital Medicine and Biomechanics, School of Basic Medical Sciences, Southern Medical University, Guangzhou 510515, China
- Correspondence: author: (W.T.); (H.S.); (S.L.)
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Li R, Sklutuis R, Groebner JL, Romerio F. HIV-1 Natural Antisense Transcription and Its Role in Viral Persistence. Viruses 2021; 13:v13050795. [PMID: 33946840 PMCID: PMC8145503 DOI: 10.3390/v13050795] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 12/11/2022] Open
Abstract
Natural antisense transcripts (NATs) represent a class of RNA molecules that are transcribed from the opposite strand of a protein-coding gene, and that have the ability to regulate the expression of their cognate protein-coding gene via multiple mechanisms. NATs have been described in many prokaryotic and eukaryotic systems, as well as in the viruses that infect them. The human immunodeficiency virus (HIV-1) is no exception, and produces one or more NAT from a promoter within the 3’ long terminal repeat. HIV-1 antisense transcripts have been the focus of several studies spanning over 30 years. However, a complete appreciation of the role that these transcripts play in the virus lifecycle is still lacking. In this review, we cover the current knowledge about HIV-1 NATs, discuss some of the questions that are still open and identify possible areas of future research.
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Affiliation(s)
- Rui Li
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA;
| | - Rachel Sklutuis
- HIV Dynamics and Replication Program, Host-Virus Interaction Branch, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA; (R.S.); (J.L.G.)
| | - Jennifer L. Groebner
- HIV Dynamics and Replication Program, Host-Virus Interaction Branch, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA; (R.S.); (J.L.G.)
| | - Fabio Romerio
- Department of Molecular and Comparative Pathobiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA;
- Correspondence:
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Dogrammatzis C, Waisner H, Kalamvoki M. "Non-Essential" Proteins of HSV-1 with Essential Roles In Vivo: A Comprehensive Review. Viruses 2020; 13:E17. [PMID: 33374862 PMCID: PMC7824580 DOI: 10.3390/v13010017] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/17/2020] [Accepted: 12/18/2020] [Indexed: 12/19/2022] Open
Abstract
Viruses encode for structural proteins that participate in virion formation and include capsid and envelope proteins. In addition, viruses encode for an array of non-structural accessory proteins important for replication, spread, and immune evasion in the host and are often linked to virus pathogenesis. Most virus accessory proteins are non-essential for growth in cell culture because of the simplicity of the infection barriers or because they have roles only during a state of the infection that does not exist in cell cultures (i.e., tissue-specific functions), or finally because host factors in cell culture can complement their absence. For these reasons, the study of most nonessential viral factors is more complex and requires development of suitable cell culture systems and in vivo models. Approximately half of the proteins encoded by the herpes simplex virus 1 (HSV-1) genome have been classified as non-essential. These proteins have essential roles in vivo in counteracting antiviral responses, facilitating the spread of the virus from the sites of initial infection to the peripheral nervous system, where it establishes lifelong reservoirs, virus pathogenesis, and other regulatory roles during infection. Understanding the functions of the non-essential proteins of herpesviruses is important to understand mechanisms of viral pathogenesis but also to harness properties of these viruses for therapeutic purposes. Here, we have provided a comprehensive summary of the functions of HSV-1 non-essential proteins.
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Affiliation(s)
| | | | - Maria Kalamvoki
- Department of Microbiology, Molecular Genetics, and Immunology, University of Kansas Medical Center, Kansas City, KS 66160, USA; (C.D.); (H.W.)
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RNA Polymerase II Promoter-Proximal Pausing and Release to Elongation Are Key Steps Regulating Herpes Simplex Virus 1 Transcription. J Virol 2020; 94:JVI.02035-19. [PMID: 31826988 DOI: 10.1128/jvi.02035-19] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 12/03/2019] [Indexed: 12/21/2022] Open
Abstract
Herpes simplex virus 1 (HSV-1) genes are transcribed by cellular RNA polymerase II (Pol II). Expression of viral immediate early (α) genes is followed sequentially by early (β), late (γ1), and true late (γ2) genes. We used precision nuclear run-on with deep sequencing to map and to quantify Pol II on the HSV-1(F) genome with single-nucleotide resolution. Approximately 30% of total Pol II relocated to viral genomes within 3 h postinfection (hpi), when it occupied genes of all temporal classes. At that time, Pol II on α genes accumulated most heavily at promoter-proximal pause (PPP) sites located ∼60 nucleotides downstream of the transcriptional start site, while β genes bore Pol II more evenly across gene bodies. At 6 hpi, Pol II increased on γ1 and γ2 genes while Pol II pausing remained prominent on α genes. At that time, average cytoplasmic mRNA expression from α and β genes decreased, relative to levels at 3 hpi, while γ1 relative expression increased slightly and γ2 expression increased more substantially. Cycloheximide treatment during the first 3 h reduced the amount of Pol II associated with the viral genome and confined most of the remaining Pol II to α gene PPP sites. Inhibition of both cyclin-dependent kinase 9 activity and viral DNA replication reduced Pol II on the viral genome and restricted much of the remaining Pol II to PPP sites.IMPORTANCE These data suggest that viral transcription is regulated not only by Pol II recruitment to viral genes but also by control of elongation into viral gene bodies. We provide a detailed map of Pol II occupancy on the HSV-1 genome that clarifies features of the viral transcriptome, including the first identification of Pol II PPP sites. The data indicate that Pol II is recruited to late genes early in infection. Comparing α and β gene occupancy at PPP sites and gene bodies suggests that Pol II is released more efficiently into the bodies of β genes than α genes at 3 hpi and that repression of α gene expression late in infection is mediated by prolonged promoter-proximal pausing. In addition, DNA replication is required to maintain full Pol II occupancy on viral DNA and to promote elongation on late genes later in infection.
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Eissa IR, Naoe Y, Bustos-Villalobos I, Ichinose T, Tanaka M, Zhiwen W, Mukoyama N, Morimoto T, Miyajima N, Hitoki H, Sumigama S, Aleksic B, Kodera Y, Kasuya H. Genomic Signature of the Natural Oncolytic Herpes Simplex Virus HF10 and Its Therapeutic Role in Preclinical and Clinical Trials. Front Oncol 2017; 7:149. [PMID: 28770166 PMCID: PMC5509757 DOI: 10.3389/fonc.2017.00149] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2017] [Accepted: 06/26/2017] [Indexed: 12/19/2022] Open
Abstract
Oncolytic viruses (OVs) are opening new possibilities in cancer therapy with their unique mechanism of selective replication within tumor cells and triggering of antitumor immune responses. HF10 is an oncolytic herpes simplex virus-1 with a unique genomic structure that has non-engineered deletions and insertions accompanied by frame-shift mutations, in contrast to the majority of engineered OVs. At the genetic level, HF10 naturally lacks the expression of UL43, UL49.5, UL55, UL56, and latency-associated transcripts, and overexpresses UL53 and UL54. In preclinical studies, HF10 replicated efficiently within tumor cells with extensive cytolytic effects and induced increased numbers of activated CD4+ and CD8+ T cells and natural killer cells within the tumor, leading to a significant reduction in tumor growth and prolonged survival rates. Investigator-initiated clinical studies of HF10 have been completed in recurrent breast carcinoma, head and neck cancer, and unresectable pancreatic cancer in Japan. Phase I trials were subsequently completed in refractory superficial cancers and melanoma in the United States. HF10 has been demonstrated to have a high safety margin with low frequency of adverse effects in all treated patients. Interestingly, HF10 antigens were detected in pancreatic carcinoma over 300 days after treatment with infiltration of CD4+ and CD8+ T cells, which enhanced the immune response. To date, preliminary results from a Phase II trial have indicated that HF10 in combination with ipilimumab (anti-CTLA-4) is safe and well tolerated, with high antitumor efficacy. Improvement of the effect of ipilimumab was observed in patients with stage IIIb, IIIc, or IV unresectable or metastatic melanoma. This review provides a concise description of the genomic functional organization of HF10 compared with talimogene laherparepvec. Furthermore, this review focuses on HF10 in cancer treatment as monotherapy as well as in combination therapy through a concise description of all preclinical and clinical data. In addition, we will address approaches for future directions in HF10 studies as cancer therapy.
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Affiliation(s)
- Ibrahim Ragab Eissa
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan.,Department of Surgery II, Graduate School of Medicine, Nagoya University, Nagoya, Japan.,Faculty of Science, Tanta University, Tanta, Egypt
| | - Yoshinori Naoe
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Itzel Bustos-Villalobos
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Toru Ichinose
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | | | - Wu Zhiwen
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan.,Department of Surgery II, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Nobuaki Mukoyama
- Department of Otolaryngology, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Taishi Morimoto
- Department of Surgery II, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Noriyuki Miyajima
- Department of Transplantation and Endocrine Surgery, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Hasegawa Hitoki
- Office of International Affairs, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Seiji Sumigama
- Office of International Affairs, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Branko Aleksic
- Office of International Affairs, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Yasuhiro Kodera
- Department of Surgery II, Graduate School of Medicine, Nagoya University, Nagoya, Japan
| | - Hideki Kasuya
- Cancer Immune Therapy Research Center, Graduate School of Medicine, Nagoya University, Nagoya, Japan
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Kulej K, Avgousti DC, Sidoli S, Herrmann C, Della Fera AN, Kim ET, Garcia BA, Weitzman MD. Time-resolved Global and Chromatin Proteomics during Herpes Simplex Virus Type 1 (HSV-1) Infection. Mol Cell Proteomics 2017; 16:S92-S107. [PMID: 28179408 DOI: 10.1074/mcp.m116.065987] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2016] [Revised: 02/03/2017] [Indexed: 11/06/2022] Open
Abstract
Herpes simplex virus (HSV-1) lytic infection results in global changes to the host cell proteome and the proteins associated with host chromatin. We present a system level characterization of proteome dynamics during infection by performing a multi-dimensional analysis during HSV-1 lytic infection of human foreskin fibroblast (HFF) cells. Our study includes identification and quantification of the host and viral proteomes, phosphoproteomes, chromatin bound proteomes and post-translational modifications (PTMs) on cellular histones during infection. We analyzed proteomes across six time points of virus infection (0, 3, 6, 9, 12 and 15 h post-infection) and clustered trends in abundance using fuzzy c-means. Globally, we accurately quantified more than 4000 proteins, 200 differently modified histone peptides and 9000 phosphorylation sites on cellular proteins. In addition, we identified 67 viral proteins and quantified 571 phosphorylation events (465 with high confidence site localization) on viral proteins, which is currently the most comprehensive map of HSV-1 phosphoproteome. We investigated chromatin bound proteins by proteomic analysis of the high-salt chromatin fraction and identified 510 proteins that were significantly different in abundance during infection. We found 53 histone marks significantly regulated during virus infection, including a steady increase of histone H3 acetylation (H3K9ac and H3K14ac). Our data provide a resource of unprecedented depth for human and viral proteome dynamics during infection. Collectively, our results indicate that the proteome composition of the chromatin of HFF cells is highly affected during HSV-1 infection, and that phosphorylation events are abundant on viral proteins. We propose that our epi-proteomics approach will prove to be important in the characterization of other model infectious systems that involve changes to chromatin composition.
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Affiliation(s)
- Katarzyna Kulej
- From the ‡Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.,§Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Daphne C Avgousti
- From the ‡Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.,§Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Simone Sidoli
- ¶Department of Biochemistry and Biophysics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.,‖Epigenetics Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Christin Herrmann
- §Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania.,**Cell and Molecular Biology Graduate Group, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Ashley N Della Fera
- §Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Eui Tae Kim
- From the ‡Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania.,§Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
| | - Benjamin A Garcia
- ¶Department of Biochemistry and Biophysics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania; .,‖Epigenetics Institute, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania
| | - Matthew D Weitzman
- From the ‡Department of Pathology and Laboratory Medicine, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania; .,§Division of Cancer Pathobiology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania
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Equine Herpesvirus 1 Multiply Inserted Transmembrane Protein pUL43 Cooperates with pUL56 in Downregulation of Cell Surface Major Histocompatibility Complex Class I. J Virol 2015; 89:6251-63. [PMID: 25833055 DOI: 10.1128/jvi.00032-15] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Accepted: 03/27/2015] [Indexed: 01/09/2023] Open
Abstract
UNLABELLED Herpesviruses have evolved an array of strategies to counteract antigen presentation by major histocompatibility complex class I (MHC-I). Previously, we identified pUL56 of equine herpesvirus 1 (EHV-1) as one major determinant of the downregulation of cell surface MHC-I (G. Ma, S. Feineis, N. Osterrieder, and G. R. Van de Walle, J. Virol. 86:3554-3563, 2012, http://dx.doi.org/10.1128/JVI.06994-11; T. Huang, M. J. Lehmann, A. Said, G. Ma, and N. Osterrieder, J. Virol. 88:12802-12815, 2014, http://dx.doi.org/10.1128/JVI.02079-14). Since pUL56 was able to exert its function only in the context of virus infection, we hypothesized that pUL56 cooperates with another viral protein. Here, we generated and screened a series of EHV-1 single-gene deletion mutants and found that the pUL43 orthologue was required for downregulation of cell surface MHC-I expression at the same time of infection as when pUL56 exerts its function. We demonstrate that the absence of pUL43 was not deleterious to virus growth and that expression of pUL43 was detectable from 2 h postinfection (p.i.) but decreased after 8 h p.i. due to lysosomal degradation. pUL43 localized within Golgi vesicles and required a unique hydrophilic N-terminal domain to function properly. Finally, coexpression of pUL43 and pUL56 in transfected cells reduced the cell surface expression of MHC-I. This process was dependent on PPxY motifs present in pUL56, suggesting that late domains are required for pUL43- and pUL56-dependent sorting of MHC class I for lysosomal degradation. IMPORTANCE We describe here that the poorly characterized herpesviral protein pUL43 is involved in downregulation of cell surface MHC-I. pUL43 is an early protein and degraded in lysosomes. pUL43 resides in the Golgi vesicles and needs an intact N terminus to induce MHC-I downregulation in infected cells. Importantly, pUL43 and pUL56 cooperate to reduce MHC-I expression on the surface of transfected cells. Our results suggest a model for MHC-I downregulation in which late domains in pUL56 are required for the rerouting of vesicles containing MHC-I, pUL56, and pUL43 to the lysosomal compartment.
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Zheng B, Li M, Gao S, Wang L, Qi Y, Ma Y, Ruan Q. Characterization of a novel group of antisense transcripts in human cytomegalovirus UL83 gene region. J Med Virol 2014; 86:2033-41. [PMID: 24615924 DOI: 10.1002/jmv.23887] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2013] [Indexed: 11/11/2022]
Abstract
The rapid advances in research on antisense transcripts are gradually changing our understanding of the expression of the Herpesviridae genome. In this study, the transcripts of the human cytomegalovirus (HCMV) UL83 antisense strand were investigated in three clinical isolates. Three cDNA clones containing sequences with an antisense orientation to the UL83 gene were identified in a late HCMV cDNA library. The UL83 antisense transcripts (UL83asts) were then shown to be transcribed only in the late infection phase of the three clinical HCMV strains, using rapid amplification of cDNA ends (RACE) and northern blotting. These UL83asts were identical at their 3' termini but different at 5' ends. Two open reading frames were predicted in the UL83asts.
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Affiliation(s)
- Bo Zheng
- Virus Laboratory, The affiliated Shengjing Hospital, China Medical University, Shenyang, Liaoning, China
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Ma Y, Wang N, Li M, Gao S, Wang L, Ji Y, Qi Y, He R, Sun Z, Ruan Q. An antisense transcript in the human cytomegalovirus UL87 gene region. Virol J 2011; 8:515. [PMID: 22074130 PMCID: PMC3223508 DOI: 10.1186/1743-422x-8-515] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2011] [Accepted: 11/11/2011] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Rapid advances in research on antisense transcripts are gradually changing our comprehension of genomic and gene expression aspects of the Herpesviridae. One such herpesvirus is the human cytomegalovirus (HCMV). Although transcription of the HCMV UL87 gene has not been specifically investigated, cDNA clones of UL87 antisense transcripts were found in HCMV cDNA libraries previously. In this study, the transcription of the UL87 antisense strand was investigated in three clinically isolated HCMV strains. RESULTS First, an 800 nucleotides transcript having an antisense orientation to the UL87 gene was found in a late HCMV cDNA library. Then, the UL87 antisense transcript was confirmed by Rapid amplification of cDNA ends (RACE) and Northern blot in three HCMV clinical strains. Two ORFs were predicted in the antisense transcript. The putative protein of ORF 1 showed a high degree of conservation among HCMV and other CMV strains. CONCLUSION An 800nt antisense transcript in the UL87 gene region exists in HCMV clinical strains.
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Affiliation(s)
- Yanping Ma
- Virus Laboratory, The Affiliated Shengjing Hospital, China Medical University, 110004 Shenyang, Liaoning of China, China
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10
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Xing J, Wang S, Li Y, Guo H, Zhao L, Pan W, Lin F, Zhu H, Wang L, Li M, Wang L, Zheng C. Characterization of the subcellular localization of herpes simplex virus type 1 proteins in living cells. Med Microbiol Immunol 2010; 200:61-8. [PMID: 20949280 DOI: 10.1007/s00430-010-0175-9] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2010] [Indexed: 12/16/2022]
Abstract
In this study, we presented the construction of a library of expression clones for the herpes simplex virus type 1 (HSV-1) proteome and subcellular localization map of HSV-1 proteins in living cells using yellow fluorescent protein (YFP) fusion proteins. As a result, 21 proteins showed cytoplasmic or subcytoplasmic localization, 16 proteins showed nuclear or subnuclear localization, and others were present both in the nucleus and cytoplasm. Interestingly, most capsid proteins showed enriched or exclusive localization in the nucleus, and most of the envelope proteins showed cytoplasmic localization, suggesting that subcellular localization of the proteins correlated with their functions during virus replication. These results present a subcellular localization map of HSV-1 proteins in living cells, which provide useful information to further characterize the functions of these proteins.
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Affiliation(s)
- Junji Xing
- State Key Laboratory of Virology, Wuhan Institute of Virology, Chinese Academy of Sciences, 430071 Wuhan, China
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11
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Characterization of interspecific recombinants generated from closely related bovine herpesviruses 1 and 5 through multiple PCR sequencing assays. J Virol Methods 2009; 161:75-83. [DOI: 10.1016/j.jviromet.2009.05.020] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2009] [Revised: 05/19/2009] [Accepted: 05/28/2009] [Indexed: 11/30/2022]
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12
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Zhang G, Raghavan B, Kotur M, Cheatham J, Sedmak D, Cook C, Waldman J, Trgovcich J. Antisense transcription in the human cytomegalovirus transcriptome. J Virol 2007; 81:11267-81. [PMID: 17686857 PMCID: PMC2045512 DOI: 10.1128/jvi.00007-07] [Citation(s) in RCA: 49] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023] Open
Abstract
Human cytomegalovirus (HCMV) infections are prevalent in human populations and can cause serious diseases, especially in those with compromised or immature immune systems. The HCMV genome of 230 kb is among the largest of the herpesvirus genomes. Although the entire sequence of the laboratory-adapted AD169 strain of HCMV has been available for 18 years, the precise number of viral genes is still in question. We undertook an analysis of the HCMV transcriptome as an approach to enumerate and analyze the gene products of HCMV. Transcripts of HCMV-infected fibroblasts were isolated at different times after infection and used to generate cDNA libraries representing different temporal classes of viral genes. cDNA clones harboring viral sequences were selected and subjected to sequence analysis. Of the 604 clones analyzed, 45% were derived from genomic regions predicted to be noncoding. Additionally, at least 55% of the cDNA clones in this study were completely or partially antisense to known or predicted HCMV genes. The remarkable accumulation of antisense transcripts during infection suggests that currently available genomic maps based on open-reading-frame and other in silico analyses may drastically underestimate the true complexity of viral gene products. These findings also raise the possibility that aspects of both the HCMV life cycle and genome organization are influenced by antisense transcription. Correspondingly, virus-derived noncoding and antisense transcripts may shed light on HCMV pathogenesis and may represent a new class of targets for antiviral therapies.
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Affiliation(s)
- Guojuan Zhang
- The Ohio State University, Department of Pathology, 4162 Graves Hall, 333 West 10th Avenue, Columbus, OH 43210, USA
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Ushijima Y, Luo C, Goshima F, Yamauchi Y, Kimura H, Nishiyama Y. Determination and analysis of the DNA sequence of highly attenuated herpes simplex virus type 1 mutant HF10, a potential oncolytic virus. Microbes Infect 2006; 9:142-9. [PMID: 17218138 DOI: 10.1016/j.micinf.2006.10.019] [Citation(s) in RCA: 51] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2006] [Revised: 10/29/2006] [Accepted: 10/31/2006] [Indexed: 02/04/2023]
Abstract
A spontaneously occurring herpes simplex virus type 1 (HSV-1) mutant, designated HF10, replicates very efficiently and induces extensive cell fusion in most transformed cells as well as Vero cells, but is highly attenuated in mice when inoculated by peripheral routes of infection. Recent studies have shown that HF10 is a promising agent for use in oncolytic virotherapy. In this study, we sequenced the genome of HF10 and compared it with that of HSV-1 strain 17, a reference strain with the syn+ phenotype. The sequencing covered whole regions corresponding to all open reading frames of strain 17, and the overall putative amino acid identity between HF10 and strain 17 was 99.1% except for proteins encoded by three genes with frame-shift mutations. HF10 had a number of deletions and insertions in the genome, resulting in the lack of the functional expression of UL43, UL49.5, UL55, UL56 and latency-associated transcripts. Additionally, HF10 had amino acid changes in genes involved in the regulation of syncytium formation, including UL1, UL20, UL22, UL24, UL27 and UL53. The proteins encoded by UL1, UL2, UL11, UL44, US1, US7, US8.5, US10 and US12 exhibited a relatively high divergence. These data provide the genetic background of HF10 and insight into the molecular mechanism of HSV-1 replication and pathogenicity.
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Affiliation(s)
- Yoko Ushijima
- Department of Virology, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya 466-8550, Japan
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14
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Klupp BG, Altenschmidt J, Granzow H, Fuchs W, Mettenleiter TC. Identification and characterization of the pseudorabies virus UL43 protein. Virology 2005; 334:224-33. [PMID: 15780872 DOI: 10.1016/j.virol.2005.01.032] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2004] [Revised: 01/04/2005] [Accepted: 01/20/2005] [Indexed: 10/25/2022]
Abstract
Among the least characterized herpesvirus membrane proteins are the homologs of UL43 of herpes simplex virus 1 (HSV-1). To identify and characterize the UL43 protein of pseudorabies virus (PrV), part of the open reading frame was expressed in Escherichia coli and used for immunization of a rabbit. The antiserum recognized in Western blots a 34-kDa protein in lysates of PrV infected cells and purified virions, demonstrating that the UL43 protein is a virion component. In indirect immunofluorescence analysis, the antiserum labeled vesicular structures in PrV infected cells which also contained glycoprotein B. To functionally analyze UL43, a deletion mutant was constructed lacking amino acids 23-332 of the 373aa protein. This mutant was only slightly impaired in replication as assayed by one-step growth kinetics, measurement of plaque sizes, and electron microscopy. Interestingly, the PrV UL43 protein was able to inhibit fusion induced by PrV glycoproteins in a transient expression-fusion assay to a similar extent as gM. Double mutant viruses lacking, in addition to UL43, the multiply membrane spanning glycoproteins K or M did not show a phenotype beyond that observed in the gK and gM single deletion mutants.
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Affiliation(s)
- Barbara G Klupp
- Friedrich-Loeffler-Institut, Institute of Molecular Biology, Boddenblick 5A, 17493 Greifswald-Insel Riems, Germany
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15
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Inman M, Zhou J, Webb H, Jones C. Identification of a novel bovine herpesvirus 1 transcript containing a small open reading frame that is expressed in trigeminal ganglia of latently infected cattle. J Virol 2004; 78:5438-47. [PMID: 15113922 PMCID: PMC400376 DOI: 10.1128/jvi.78.10.5438-5447.2004] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Bovine herpesvirus 1 (BHV-1), like other Alphaherpesvirinae subfamily members, establishes latency in sensory neurons. The latency-related (LR) RNA is abundantly expressed during latency, and expression of an LR protein is required for the latency reactivation cycle in cattle. Within LR promoter sequences, a 135-amino-acid open reading frame (ORF) was identified, ORF-E, that is antisense to the LR RNA. ORF-E is also downstream of the gene encoding the major viral transcriptional activator, bICP0. Strand-specific reverse transcription-PCR demonstrated that a transcript containing ORF-E was consistently expressed in trigeminal ganglia (TG) of latently infected calves, productively infected cultured cells, and acutely infected calves. As expected, a late transcript encoding glycoprotein C was not detected in TG of latently infected calves. The ORF-E transcript is polyadenylated and is expressed early when cultured bovine cells are productively infected. Protein coding sequences containing ORF-E were fused to green fluorescent protein (GFP) to examine the cellular localization of the putative protein. In transiently transfected mouse neuroblastoma (neuro-2A) and human neuroblastoma (SK-N-SH) cells, the ORF-E/GFP fusion protein was detected in discreet domains within the nucleus. In contrast, the ORF-E/GFP fusion protein was detected in the cytoplasm and nucleus of rabbit skin cells and bovine kidney cells. As expected, the GFP protein was expressed in the cytoplasm and nucleus of transfected cells. These studies indicate that the ORF-E transcript is consistently expressed during latency. We suggest that the ORF-E gene regulates some aspect of the latency reactivation cycle.
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Affiliation(s)
- Melissa Inman
- Department of Veterinary and Biomedical Sciences, University of Nebraska, Lincoln Fair Street at East Campus Loop, Lincoln, NE 68583-0905, USA
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16
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Wagner EK, Ramirez JJG, Stingley SWN, Aguilar SA, Buehler L, Devi-Rao GB, Ghazal P. Practical approaches to long oligonucleotide-based DNA microarray: lessons from herpesviruses. PROGRESS IN NUCLEIC ACID RESEARCH AND MOLECULAR BIOLOGY 2003; 71:445-91. [PMID: 12108450 DOI: 10.1016/s0079-6603(02)71048-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- Edward K Wagner
- Department of Molecular Biology and Biochemistry and Center for Virus Research, University of California, Irvine 92717, USA
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17
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Perng GC, Maguen B, Jin L, Mott KR, Kurylo J, BenMohamed L, Yukht A, Osorio N, Nesburn AB, Henderson G, Inman M, Jones C, Wechsler SL. A novel herpes simplex virus type 1 transcript (AL-RNA) antisense to the 5' end of the latency-associated transcript produces a protein in infected rabbits. J Virol 2002; 76:8003-10. [PMID: 12134005 PMCID: PMC155148 DOI: 10.1128/jvi.76.16.8003-8010.2002] [Citation(s) in RCA: 50] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Following primary ocular infection, herpes simplex virus type 1 (HSV-1) establishes a lifelong latent infection in sensory neurons of the trigeminal ganglia. Latency-associated transcript (LAT), the only known viral gene abundantly transcribed during HSV-1 neuronal latency, is required for high levels of reactivation. Recently we showed that three different mutants that do not alter the LAT promoter but contain deletions within the 5' end of the primary LAT transcript affect viral virulence (G. C. Perng et al., J. Virol. 75:9018-9028, 2001). In contrast, in LAT-null mutants viral virulence appears unaltered (T. M. Block et al., Virology 192:618-630, 1993; D. C. Bloom et al., J. Virol. 68:1283-1292, 1994; J. M. Hill et al., Virology 174:117-125, 1990; G. C. Perng et al., J. Virol. 68:8045-8055, 1994; F. Sedarati, K. M. Izumi, E. K. Wagner, and J. G. Stevens, J. Virol. 63:4455-4458, 1989). We therefore hypothesized that the 5' end of LAT and/or an as yet unidentified gene that overlaps part of this region is involved in viral virulence. We report here on the discovery and initial characterization of a novel HSV-1 RNA consistent with such a putative gene. The novel RNA was antisense to the 5' end of LAT and was designated AL-RNA (anti-LAT sense RNA). The AL-RNA overlapped the core LAT promoter and the first 158 nucleotides of the 5' end of the primary LAT transcript. AL-RNA was detected in extracts from neuron-like cells (PC-12) infected with wild-type HSV-1 but not in cells infected with a mutant with the AL region deleted. The deletions in each of the above three mutants with altered virulence encompass the 5' end of the AL-RNA, and these mutants cannot transcribe AL. This supports the hypothesis that the AL gene may play a role in viral virulence. Based on comparison to the corresponding genomic sequence, the AL-RNA did not appear to be spliced. The AL-RNA was polyadenylated and contained an open reading frame capable of encoding a protein 56 amino acids in length with a predicted molecular mass of 6.8 kDa. Sera from three of three rabbits infected with wild-type HSV-1 but not sera from any of three rabbits infected with a mutant with the AL-RNA region deleted recognized the Escherichia coli recombinantly expressed AL open reading frame on Western blots. In addition, four of six rabbits infected with wild-type virus developed enzyme-linked immunosorbent assay titers against one or more AL synthetic peptides. These results suggest that an AL protein is produced in vivo.
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Affiliation(s)
- Guey-Chuen Perng
- Ophthalmology Research Laboratories, Cedars-Sinai Medical Center Burns & Allen Research Institute, Los Angeles, California 90048, USA
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18
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Stingley SW, Ramirez JJ, Aguilar SA, Simmen K, Sandri-Goldin RM, Ghazal P, Wagner EK. Global analysis of herpes simplex virus type 1 transcription using an oligonucleotide-based DNA microarray. J Virol 2000; 74:9916-27. [PMID: 11024119 PMCID: PMC102029 DOI: 10.1128/jvi.74.21.9916-9927.2000] [Citation(s) in RCA: 120] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023] Open
Abstract
More than 100 transcripts of various abundances and kinetic classes are expressed during phases of productive and latent infections by herpes simplex virus (HSV) type 1. To carry out rapid global analysis of variations in such patterns as a function of perturbation of viral regulatory genes and cell differentiation, we have made DNA microchips containing sets of 75-mer oligonucleotides specific for individual viral transcripts. About half of these are unique for single transcripts, while others function for overlapping ones. We have also included probes for 57 human genes known to be involved in some aspect of stress response. The chips efficiently detect all viral transcripts, and analysis of those abundant under various conditions of infection demonstrates excellent correlation with known kinetics of mRNA accumulation. Further, quantitative sensitivity is high. We have further applied global analysis of transcription to an investigation of mRNA populations in cells infected with a mutant virus in which the essential immediate-early alpha27 (U(L)54) gene has been functionally deleted. Transcripts expressed at 6 h following infection with this mutant can be classified into three groups: those whose abundance is augmented (mainly immediate-early transcripts) or unaltered, those whose abundance is somewhat reduced, and those where there is a significant reduction in transcript levels. These do not conform to any particular kinetic class. Interestingly, levels of many cellular transcripts surveyed are increased. The high proportion of such transcripts suggests that the alpha27 gene plays a major role in the early decline in cellular gene expression so characteristic of HSV infection.
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Affiliation(s)
- S W Stingley
- Department of Molecular Biology and Biochemistry, University of California, Irvine, California 92697, USA
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Chang YE, Menotti L, Filatov F, Campadelli-Fiume G, Roizman B. UL27.5 is a novel gamma2 gene antisense to the herpes simplex virus 1 gene encoding glycoprotein B. J Virol 1998; 72:6056-64. [PMID: 9621069 PMCID: PMC110411 DOI: 10.1128/jvi.72.7.6056-6064.1998] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/1998] [Accepted: 04/17/1998] [Indexed: 02/07/2023] Open
Abstract
An antibody made against the herpes simplex virus 1 US5 gene predicted to encode glycoprotein J was found to react strongly with two proteins, one with an apparent Mr of 23,000 and mapping in the S component and one with a herpes simplex virus protein with an apparent Mr of 43,000. The antibody also reacted with herpes simplex virus type 2 proteins forming several bands with apparent Mrs ranging from 43,000 to 50,000. Mapping studies based on intertypic recombinants, analyses of deletion mutants, and ultimately, reaction of the antibody with a chimeric protein expressed by in-frame fusion of the glutathione S-transferase gene to an open reading frame antisense to the gene encoding glycoprotein B led to the definitive identification of the new open reading frame, designated UL27.5. Sequence analyses indicate the conservation of a short amino acid sequence common to US5 and UL27.5. The coding sequence of the herpes simplex virus UL27.5 open reading frame is strongly homologous to the sequence encoding the carboxyl terminus of the herpes simplex virus 2 UL27.5 sequence. However, both open reading frames could encode proteins predicted to be significantly larger than the mature UL27.5 proteins accumulating in the infected cells, indicating that these are either processed posttranslationally or synthesized from alternate, nonmethionine-initiating codons. The UL27.5 gene expression is blocked by phosphonoacetate, indicating that it is a gamma2 gene. The product accumulated predominantly in the cytoplasm. UL27.5 is the third open reading frame found to map totally antisense to another gene and suggests that additional genes mapping antisense to known genes may exist.
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Affiliation(s)
- Y E Chang
- The Marjorie B. Kovler Viral Oncology Laboratories, The University of Chicago, Chicago, Illinois 60637, USA
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Dolan A, Jamieson FE, Cunningham C, Barnett BC, McGeoch DJ. The genome sequence of herpes simplex virus type 2. J Virol 1998; 72:2010-21. [PMID: 9499055 PMCID: PMC109494 DOI: 10.1128/jvi.72.3.2010-2021.1998] [Citation(s) in RCA: 281] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
The genomic DNA sequence of herpes simplex virus type 2 (HSV-2) strain HG52 was determined as 154,746 bp with a G+C content of 70.4%. A total of 74 genes encoding distinct proteins was identified; three of these were each present in two copies, within major repeat elements of the genome. The HSV-2 gene set corresponds closely with that of HSV-1, and the HSV-2 sequence prompted several local revisions to the published HSV-1 sequence (D. J. McGeoch, M. A. Dalrymple, A. J. Davison, A. Dolan, M. C. Frame, D. McNab, L. J. Perry, J. E. Scott, and P. Taylor, J. Gen. Virol. 69:1531-1574, 1988). No compelling evidence for the existence of any additional protein-coding genes in HSV-2 was identified.
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Affiliation(s)
- A Dolan
- MRC Virology Unit, Institute of Virology, Glasgow, United Kingdom.
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21
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Randall G, Roizman B. Transcription of the derepressed open reading frame P of herpes simplex virus 1 precludes the expression of the antisense gamma(1)34.5 gene and may account for the attenuation of the mutant virus. J Virol 1997; 71:7750-7. [PMID: 9311860 PMCID: PMC192127 DOI: 10.1128/jvi.71.10.7750-7757.1997] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Open reading frame P (ORF P), located at the 3' terminus of the 8.5-kb DNA sequence transcribed during latency and almost completely antisense to the gamma(1)34.5 gene, is naturally repressed by infected cell protein 4 (ICP4), the major herpes simplex virus 1 regulatory protein. Earlier studies on cells infected with a mutant in which the expression of ORF P is derepressed have shown that (i) the accumulation of the alpha infected cell proteins 0 (ICP0) and 22 (ICP22), the products of spliced mRNAs, is reduced congruent with the binding of ORF P protein to p32, a component of the ASF/SF2 splicing factors, (ii) ORF P protein colocalizes with spliceosomes, (iii) both gamma(1)34.5 mRNA and protein are virtually undetectable, and (iv) the virus is attenuated on intracerebral inoculation in mice. We report the construction and characterization of two recombinant viruses: R7546, in which ORF P transcription was derepressed and the initiator methionine codon was replaced; and R7547, in which both mutations were repaired to the wild-type genotype. The mutations in R7546 do not alter the amino acid sequence of the gamma(1)34.5 gene. We report that (i) the reduction in the accumulation of gamma(1)34.5 mRNA and protein in cells infected with mutant viruses expressing derepressed ORF P genes reflects the effects of antisense transcription of ORF P rather than a function of ORF P protein, (ii) the attenuated phenotype of the viruses carrying derepressed ORF P genes is due largely to the absence of the gamma(1)34.5 protein, and (iii) the reduction in accumulation of ICP0 and ICP22 requires the expression of ORF P protein.
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Affiliation(s)
- G Randall
- The Marjorie B. Kovler Viral Oncology Laboratories, The University of Chicago, Illinois 60637, USA
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