Perturbation of Human T-Cell Leukemia Virus Type 1 Particle Morphology by Differential Gag Co-Packaging.

Abstract:

:Human T-cell leukemia virus type 1 (HTLV-1) is an important cancer-causing human retrovirus that has infected approximately 15 million individuals worldwide. Many aspects of HTLV-1 replication, including virus particle structure and assembly, are poorly understood. Group-specific antigen (Gag) proteins labeled at the carboxy terminus with a fluorophore protein have been used extensively as a surrogate for fluorescence studies of retroviral assembly. How these tags affect Gag stoichiometry and particle morphology has not been reported in detail. In this study, we used an HTLV-1 Gag expression construct with the yellow fluorescence protein (YFP) fused to the carboxy-terminus as a surrogate for the HTLV-1 Gag-Pol to assess the effects of co-packaging of Gag and a Gag-YFP on virus-like particle (VLP) morphology and analyzed particles by cryogenic transmission electron microscopy (cryo-TEM). Scanning transmission electron microscopy (STEM) and fluorescence fluctuation spectroscopy (FFS) were also used to determine the Gag stoichiometry. We found that ratios of 3:1 (Gag:Gag-YFP) or greater resulted in a particle morphology indistinguishable from that of VLPs produced with the untagged HTLV-1 Gag, i.e., a mean diameter of ~113 nm and a mass of 220 MDa as determined by cryo-TEM and STEM, respectively. Furthermore, FFS analysis indicated that HTLV-1 Gag-YFP was incorporated into VLPs in a predictable manner at the 3:1 Gag:Gag-YFP ratio. Both STEM and FFS analyses found that the Gag copy number in VLPs produced with a 3:1 ratio of Gag:Gag-YFP was is in the range of 1500-2000 molecules per VLP. The observations made in this study indicate that biologically relevant Gag-Gag interactions occur between Gag and Gag-YFP at ratios of 3:1 or higher and create a Gag lattice structure in VLPs that is morphologically indistinguishable from that of VLPs produced with just untagged Gag. This information is useful for the quantitative analysis of Gag-Gag interactions that occur during virus particle assembly and in released immature particles.

journal_name

Viruses

journal_title

Viruses

authors

Maldonado JO,Angert I,Cao S,Berk S,Zhang W,Mueller JD,Mansky LM

doi

10.3390/v9070191

subject

Has Abstract

pub_date

2017-07-19 00:00:00

issue

7

issn

1999-4915

pii

v9070191

journal_volume

9

pub_type

杂志文章
  • Chimeric Capsid Proteins Impact Transduction Efficiency of Haploid Adeno-Associated Virus Vectors.

    abstract::Our previous studies have demonstrated that haploid AAV vectors made from capsids of two different serotypes induced high transduction and prevented serotype-specific antibody binding. In this study, we explored the transduction efficiency of several haploid viruses, which were made from the VP1/VP2 of one serotype an...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v11121138

    authors: Chai Z,Zhang X,Dobbins AL,Frost EA,Samulski RJ,Li C

    更新日期:2019-12-09 00:00:00

  • Virology, Epidemiology, Pathogenesis, and Control of COVID-19.

    abstract::The outbreak of emerging severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) disease (COVID-19) in China has been brought to global attention and declared a pandemic by the World Health Organization (WHO) on March 11, 2020. Scientific advancements since the pandemic of severe acute respiratory syndrome (SARS)...

    journal_title:Viruses

    pub_type: 杂志文章,评审

    doi:10.3390/v12040372

    authors: Jin Y,Yang H,Ji W,Wu W,Chen S,Zhang W,Duan G

    更新日期:2020-03-27 00:00:00

  • Structures and Functions of Pestivirus Glycoproteins: Not Simply Surface Matters.

    abstract::Pestiviruses, which include economically important animal pathogens such as bovine viral diarrhea virus and classical swine fever virus, possess three envelope glycoproteins, namely Erns, E1, and E2. This article discusses the structures and functions of these glycoproteins and their effects on viral pathogenicity in ...

    journal_title:Viruses

    pub_type: 杂志文章,评审

    doi:10.3390/v7072783

    authors: Wang FI,Deng MC,Huang YL,Chang CY

    更新日期:2015-06-29 00:00:00

  • Full Genome Sequencing Reveals New Southern African Territories Genotypes Bringing Us Closer to Understanding True Variability of Foot-and-Mouth Disease Virus in Africa.

    abstract::Foot-and-mouth disease virus (FMDV) causes a highly contagious disease of cloven-hooved animals that poses a constant burden on farmers in endemic regions and threatens the livestock industries in disease-free countries. Despite the increased number of publicly available whole genome sequences, FMDV data are biased by...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v10040192

    authors: Lasecka-Dykes L,Wright CF,Di Nardo A,Logan G,Mioulet V,Jackson T,Tuthill TJ,Knowles NJ,King DP

    更新日期:2018-04-13 00:00:00

  • The Impacts of Low Diversity Sequence Data on Phylodynamic Inference during an Emerging Epidemic.

    abstract::Phylodynamic inference is a pivotal tool in understanding transmission dynamics of viral outbreaks. These analyses are strongly guided by the input of an epidemiological model as well as sequence data that must contain sufficient intersequence variability in order to be informative. These criteria, however, may not be...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v13010079

    authors: Lam A,Duchene S

    更新日期:2021-01-08 00:00:00

  • Pretreatment of mice with oligonucleotide prop5 protects them from influenza virus infections.

    abstract::Influenza A virus is a successful parasite and requires host factors to complete its life cycle. Prop5 is an antisense oligonucleotide, targeting programmed cell death protein 5 (PDCD5). In this study, we tested the antiviral activity of prop5 against mouse-adapted A/FM/1/47 strain of influenza A virus in a mouse mode...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v6020573

    authors: Li K,Zhou Z,Wang YO,Liu J,Zhao HB,Yang J,Wang SQ

    更新日期:2014-02-06 00:00:00

  • The Virus-Host Interplay: Biogenesis of +RNA Replication Complexes.

    abstract::Positive-strand RNA (+RNA) viruses are an important group of human and animal pathogens that have significant global health and economic impacts. Notable members include West Nile virus, Dengue virus, Chikungunya, Severe acute respiratory syndrome (SARS) Coronavirus and enteroviruses of the Picornaviridae family.Unfor...

    journal_title:Viruses

    pub_type: 杂志文章,评审

    doi:10.3390/v7082825

    authors: Reid CR,Airo AM,Hobman TC

    更新日期:2015-08-06 00:00:00

  • MimiLook: A Phylogenetic Workflow for Detection of Gene Acquisition in Major Orthologous Groups of Megavirales.

    abstract::With the inclusion of new members, understanding about evolutionary mechanisms and processes by which members of the proposed order, Megavirales, have evolved has become a key area of interest. The central role of gene acquisition has been shown in previous studies. However, the major drawback in gene acquisition stud...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v9040072

    authors: Jain S,Panda A,Colson P,Raoult D,Pontarotti P

    更新日期:2017-04-07 00:00:00

  • Biochemical and Biophysical Characterization of the dsDNA Packaging Motor from the Lactococcus lactis Bacteriophage Asccphi28.

    abstract::Double-stranded DNA viruses package their genomes into pre-assembled protein procapsids. This process is driven by macromolecular motors that transiently assemble at a unique vertex of the procapsid and utilize homomeric ring ATPases to couple genome encapsidation to ATP hydrolysis. Here, we describe the biochemical a...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v13010015

    authors: Reyes-Aldrete E,Dill EA,Bussetta C,Szymanski MR,Diemer G,Maindola P,White MA,Bujalowski WM,Choi KH,Morais MC

    更新日期:2020-12-23 00:00:00

  • Integrase-Defective Lentiviral Vectors for Delivery of Monoclonal Antibodies against Influenza.

    abstract::Delivering rapid protection against infectious agents to non-immune populations is a formidable public health challenge. Although passive immunotherapy is a fast and effective method of protection, large-scale production and administration of monoclonal antibodies (mAbs) is expensive and unpractical. Viral vector-medi...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v12121460

    authors: Michelini Z,Minkoff JM,Yang J,Negri D,Cara A,Hanson BJ,Salvatore M

    更新日期:2020-12-17 00:00:00

  • Hepatitis E Pathogenesis.

    abstract::Although most hepatitis E virus (HEV) infections are asymptomatic, some can be severe, causing fulminant hepatitis and extra-hepatic manifestations, including neurological and kidney injuries. Chronic HEV infections may also occur in immunocompromised patients. This review describes how our understanding of the pathog...

    journal_title:Viruses

    pub_type: 杂志文章,评审

    doi:10.3390/v8080212

    authors: Lhomme S,Marion O,Abravanel F,Chapuy-Regaud S,Kamar N,Izopet J

    更新日期:2016-08-05 00:00:00

  • The molecular biology of feline immunodeficiency virus (FIV).

    abstract::Feline immunodeficiency virus (FIV) is widespread in feline populations and causes an AIDS-like illness in domestic cats. It is highly prevalent in several endangered feline species. In domestic cats FIV infection is a valuable small animal model for HIV infection. In recent years there has been sa significant increas...

    journal_title:Viruses

    pub_type: 杂志文章,评审

    doi:10.3390/v3112192

    authors: Kenyon JC,Lever AM

    更新日期:2011-11-01 00:00:00

  • Upregulation of miR-101 during Influenza A Virus Infection Abrogates Viral Life Cycle by Targeting mTOR Pathway.

    abstract::Micro RNAs (miRNAs) are a class of small non-coding single-stranded RNA, which play an important role in modulating host-Influenza A virus (IAV) crosstalk. The interplay between influenza and miRNA interaction is defined by a plethora of complex mechanisms, which are not fully understood yet. Here, we demonstrate that...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v12040444

    authors: Sharma S,Chatterjee A,Kumar P,Lal S,Kondabagil K

    更新日期:2020-04-15 00:00:00

  • Factors That Improve RT-QuIC Detection of Prion Seeding Activity.

    abstract::Rapid and sensitive detection of prions is important in managing prion diseases. The real-time quaking-induced conversion (RT-QuIC) assay for prion seeding activity has been applied to many prion diseases and provides for specific antemortem diagnostic testing. We evaluated RT-QuIC's long-term consistency and varied m...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v8050140

    authors: Orrú CD,Hughson AG,Groveman BR,Campbell KJ,Anson KJ,Manca M,Kraus A,Caughey B

    更新日期:2016-05-23 00:00:00

  • A Nanoparticle-Based Trivalent Vaccine Targeting the Glycan Binding VP8* Domains of Rotaviruses.

    abstract::Rotavirus causes severe gastroenteritis in children. Although vaccines are implemented, rotavirus-related diarrhea still claims ~200,000 lives annually worldwide, mainly in low-income settings, pointing to a need for improved vaccine tactics. To meet such a public health need, a P24-VP8* nanoparticle displaying the gl...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v13010072

    authors: Xia M,Huang P,Jiang X,Tan M

    更新日期:2021-01-06 00:00:00

  • Unprecedented Diversity of Lactococcal Group 936 Bacteriophages Revealed by Amplicon Sequencing of the Portal Protein Gene.

    abstract::Lactococcus lactis is one of the most important bacteria in dairy fermentations, being used in the production of cheese and buttermilk. The processes are vulnerable to phage attacks, and undefined mixtures of lactococcal strains are often used to reduce the risk of bacteriophage caused fermentation failure. Other prev...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v11050443

    authors: Frantzen CA,Holo H

    更新日期:2019-05-16 00:00:00

  • Shedding Light on the Effect of Natural Anti-Herpesvirus Alkaloids on SARS-CoV-2: A Treatment Option for COVID-19.

    abstract::The whole world is currently facing an unseen enemy, called coronavirus disease 2019 (COVID-19), which is causing a global pandemic. This disease is caused by a novel single-stranded enveloped RNA virus, known as the Severe Acute Respiratory Syndrome Coronavirus-2 (SARS-CoV-2). Although huge efforts are being made to ...

    journal_title:Viruses

    pub_type: 社论

    doi:10.3390/v12040476

    authors: Hassan STS

    更新日期:2020-04-23 00:00:00

  • First Phylogenetic Analysis of Malian SARS-CoV-2 Sequences Provides Molecular Insights into the Genomic Diversity of the Sahel Region.

    abstract::We are currently facing a pandemic of COVID-19, caused by a spillover from an animal-originating coronavirus to humans occurring in the Wuhan region of China in December 2019. From China, the virus has spread to 188 countries and regions worldwide, reaching the Sahel region on March 2, 2020. Since whole genome sequenc...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v12111251

    authors: Kouriba B,Dürr A,Rehn A,Sangaré AK,Traoré BY,Bestehorn-Willmann MS,Ouedraogo J,Heitzer A,Sogodogo E,Maiga A,Walter MC,Zimmermann F,Wölfel R,Antwerpen MH

    更新日期:2020-11-02 00:00:00

  • Discovering host genes involved in the infection by the Tomato Yellow Leaf Curl Virus complex and in the establishment of resistance to the virus using Tobacco Rattle Virus-based post transcriptional gene silencing.

    abstract::The development of high-throughput technologies allows for evaluating gene expression at the whole-genome level. Together with proteomic and metabolomic studies, these analyses have resulted in the identification of plant genes whose function or expression is altered as a consequence of pathogen attacks. Members of th...

    journal_title:Viruses

    pub_type: 杂志文章,评审

    doi:10.3390/v5030998

    authors: Czosnek H,Eybishtz A,Sade D,Gorovits R,Sobol I,Bejarano E,Rosas-Díaz T,Lozano-Durán R

    更新日期:2013-03-22 00:00:00

  • Viral Metagenomic Analysis of Aedes albopictus Mosquitos from Southern Switzerland.

    abstract::A metagenomic study was performed on 498 female and 40 male Aedes albopictus mosquitos collected in August and September 2019 in Ticino, a region in southern Switzerland, to address the question regarding the risk of the local transmission of zoonotic viruses. A total of 13 viruses from seven different virus families ...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v12090929

    authors: Kubacki J,Flacio E,Qi W,Guidi V,Tonolla M,Fraefel C

    更新日期:2020-08-24 00:00:00

  • Genetic Characterization of Avian Influenza A (H11N9) Virus Isolated from Mandarin Ducks in South Korea in 2018.

    abstract::In July 2018, a novel avian influenza virus (A/Mandarin duck/South Korea/KNU18-12/2018(H11N9)) was isolated from Mandarin ducks in South Korea. Phylogenetic and molecular analyses were conducted to characterize the genetic origins of the H11N9 strain. Phylogenetic analysis indicated that eight gene segments of strain ...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v12020203

    authors: Tuong HT,Nguyen NM,Sung HW,Park H,Yeo SJ

    更新日期:2020-02-12 00:00:00

  • Cervical Cancer Screening Programs in Europe: The Transition Towards HPV Vaccination and Population-Based HPV Testing.

    abstract::Cervical cancer is the fourth most frequently occurring cancer in women around the world and can affect them during their reproductive years. Since the development of the Papanicolaou (Pap) test, screening has been essential in identifying cervical cancer at a treatable stage. With the identification of the human papi...

    journal_title:Viruses

    pub_type: 杂志文章,评审

    doi:10.3390/v10120729

    authors: Chrysostomou AC,Stylianou DC,Constantinidou A,Kostrikis LG

    更新日期:2018-12-19 00:00:00

  • Structural analyses of Avocado sunblotch viroid reveal differences in the folding of plus and minus RNA strands.

    abstract::Viroids are small pathogenic circular single-stranded RNAs, present in two complementary sequences, named plus and minus, in infected plant cells. A high degree of complementarities between different regions of the RNAs allows them to adopt complex structures. Since viroids are naked non-coding RNAs, interactions with...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v6020489

    authors: Delan-Forino C,Deforges J,Benard L,Sargueil B,Maurel MC,Torchet C

    更新日期:2014-01-29 00:00:00

  • Characterization of the RNA Transcription Profile of Bombyx mori Bidensovirus.

    abstract::Bombyx mori bidensovirus (BmBDV) is a single-stranded DNA (ssDNA) virus from the genus Bidensovirus of the Bidnaviridae family, which, thus far, solely infects insects. It has a unique genome that contains bipartite DNA molecules (VD1 and VD2). In this study, we explored the detailed transcription mapping of the compl...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v11040325

    authors: Li R,Chang P,Lü P,Hu Z,Chen K,Yao Q,Yu Q

    更新日期:2019-04-03 00:00:00

  • The 5' and 3' Untranslated Regions of the Flaviviral Genome.

    abstract::Flaviviruses are enveloped arthropod-borne viruses with a single-stranded, positive-sense RNA genome that can cause serious illness in humans and animals. The 11 kb 5' capped RNA genome consists of a single open reading frame (ORF), and is flanked by 5' and 3' untranslated regions (UTR). The ORF is a polyprotein that ...

    journal_title:Viruses

    pub_type: 杂志文章,评审

    doi:10.3390/v9060137

    authors: Ng WC,Soto-Acosta R,Bradrick SS,Garcia-Blanco MA,Ooi EE

    更新日期:2017-06-06 00:00:00

  • THO Complex Subunit 7 Homolog Negatively Regulates Cellular Antiviral Response against RNA Viruses by Targeting TBK1.

    abstract::RNA virus invasion induces a cytosolic RIG-I-like receptor (RLR) signaling pathway by promoting assembly of the Mitochondrial antiviral-signaling protein (MAVS) signalosome and triggers the rapid production of type I interferons (IFNs) and proinflammatory cytokines. During this process, the pivotal kinase TANK binding...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v11020158

    authors: He TS,Xie T,Li J,Yang YX,Li C,Wang W,Cao L,Rao H,Ju C,Xu LG

    更新日期:2019-02-15 00:00:00

  • Phylogenetic, Evolutionary and Structural Analysis of Canine Parvovirus (CPV-2) Antigenic Variants Circulating in Colombia.

    abstract::Canine parvovirus (CPV-2) is the causative agent of haemorrhagic gastroenteritis in canids. Three antigenic variants-CPV-2a, CPV-2b and CPV-2c-have been described, which are determined by variations at residue 426 of the VP2 capsid protein. In Colombia, the CPV-2a and CPV-2b antigenic variants have previously been rep...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v12050500

    authors: Giraldo-Ramirez S,Rendon-Marin S,Ruiz-Saenz J

    更新日期:2020-04-30 00:00:00

  • Comparative analysis of glycoprotein B (gB) of equine herpesvirus type 1 and type 4 (EHV-1 and EHV-4) in cellular tropism and cell-to-cell transmission.

    abstract::Glycoprotein B (gB) plays an important role in alphaherpesvirus cellular entry and acts in concert with gD and the gH/gL complex. To evaluate whether functional differences exist between gB1 and gB4, the corresponding genes were exchanged between the two viruses. The gB4-containing-EHV-1 (EHV-1_gB4) recombinant virus ...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v7020522

    authors: Spiesschaert B,Osterrieder N,Azab W

    更新日期:2015-02-03 00:00:00

  • Use of the Syrian hamster as a new model of ebola virus disease and other viral hemorrhagic fevers.

    abstract::Historically, mice and guinea pigs have been the rodent models of choice for therapeutic and prophylactic countermeasure testing against Ebola virus disease (EVD). Recently, hamsters have emerged as a novel animal model for the in vivo study of EVD. In this review, we discuss the history of the hamster as a research l...

    journal_title:Viruses

    pub_type: 杂志文章,评审

    doi:10.3390/v4123754

    authors: Wahl-Jensen V,Bollinger L,Safronetz D,de Kok-Mercado F,Scott DP,Ebihara H

    更新日期:2012-12-14 00:00:00

  • Time-Course Microarray Analysis Reveals Differences between Transcriptional Changes in Tomato Leaves Triggered by Mild and Severe Variants of Potato Spindle Tuber Viroid.

    abstract::Viroids are small non-capsidated non-coding RNA replicons that utilize host factors for efficient propagation and spread through the entire plant. They can incite specific disease symptoms in susceptible plants. To better understand viroid-plant interactions, we employed microarray analysis to observe the changes of g...

    journal_title:Viruses

    pub_type: 杂志文章

    doi:10.3390/v10050257

    authors: Więsyk A,Iwanicka-Nowicka R,Fogtman A,Zagórski-Ostoja W,Góra-Sochacka A

    更新日期:2018-05-15 00:00:00