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Bruštíková K, Ryabchenko B, Žáčková S, Šroller V, Forstová J, Horníková L. Mouse polyomavirus infection induces lamin reorganisation. FEBS J 2024. [PMID: 39288210 DOI: 10.1111/febs.17275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2024] [Revised: 07/02/2024] [Accepted: 09/06/2024] [Indexed: 09/19/2024]
Abstract
The nuclear lamina is a dense network of intermediate filaments beneath the inner nuclear membrane. Composed of A-type lamins (lamin A/C) and B-type lamins (lamins B1 and B2), the nuclear lamina provides a scaffold for the nuclear envelope and chromatin, thereby maintaining the structural integrity of the nucleus. A-type lamins are also found inside the nucleus where they interact with chromatin and participate in gene regulation. Viruses replicating in the cell nucleus have to overcome the nuclear envelope during the initial phase of infection and during the nuclear egress of viral progeny. Here, we focused on the role of lamins in the replication cycle of a dsDNA virus, mouse polyomavirus. We detected accumulation of the major capsid protein VP1 at the nuclear periphery, defects in nuclear lamina staining and different lamin A/C phosphorylation patterns in the late phase of mouse polyomavirus infection, but the nuclear envelope remained intact. An absence of lamin A/C did not affect the formation of replication complexes but did slow virus propagation. Based on our findings, we propose that the nuclear lamina is a scaffold for replication complex formation and that lamin A/C has a crucial role in the early phases of infection with mouse polyomavirus.
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Affiliation(s)
- Kateřina Bruštíková
- Department of Genetics and Microbiology, BIOCEV, Faculty of Science, Charles University, Prague, Czech Republic
| | - Boris Ryabchenko
- Department of Genetics and Microbiology, BIOCEV, Faculty of Science, Charles University, Prague, Czech Republic
| | - Sandra Žáčková
- Department of Genetics and Microbiology, BIOCEV, Faculty of Science, Charles University, Prague, Czech Republic
| | - Vojtěch Šroller
- Department of Genetics and Microbiology, BIOCEV, Faculty of Science, Charles University, Prague, Czech Republic
| | - Jitka Forstová
- Department of Genetics and Microbiology, BIOCEV, Faculty of Science, Charles University, Prague, Czech Republic
| | - Lenka Horníková
- Department of Genetics and Microbiology, BIOCEV, Faculty of Science, Charles University, Prague, Czech Republic
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2
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Spanielová H, Fraiberk M, Suchanová J, Soukup J, Forstová J. The encapsidation of polyomavirus is not defined by a sequence-specific encapsidation signal. Virology 2014; 450-451:122-31. [PMID: 24503074 DOI: 10.1016/j.virol.2013.12.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2013] [Revised: 09/25/2013] [Accepted: 12/10/2013] [Indexed: 11/17/2022]
Abstract
Mouse polyomavirus (MPyV) is considered a potential tool for the application of gene therapy; however, the current knowledge of the encapsulation of DNA into virions is vague. We used a series of assays based on the encapsidation of a reporter vector into MPyV pseudovirions to identify putative cis-acting elements that are involved in DNA encapsidation. None of the sequences that were derived from MPyV have been shown to solely enhance the encapsidation of a reporter vector in the assay. The frequency of encapsidation strongly correlated with the total intracellular amount of the vector after transfection. The encapsidation of target DNA into the pseudovirions was shown to be non-specific, and the packaging of non-replicated DNA was observed. We propose that the actual concentration of target DNA at the sites of virion formation is the primary factor that determines its selection for encapsidation.
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Affiliation(s)
- Hana Spanielová
- Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Viničná 5, 128 44 Prague 2, Czech Republic.
| | - Martin Fraiberk
- Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Viničná 5, 128 44 Prague 2, Czech Republic
| | - Jiřina Suchanová
- Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Viničná 5, 128 44 Prague 2, Czech Republic
| | - Jakub Soukup
- Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Viničná 5, 128 44 Prague 2, Czech Republic
| | - Jitka Forstová
- Department of Genetics and Microbiology, Faculty of Science, Charles University in Prague, Viničná 5, 128 44 Prague 2, Czech Republic
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Zhang J, Shakhnovich EI. Slowly replicating lytic viruses: pseudolysogenic persistence and within-host competition. PHYSICAL REVIEW LETTERS 2009; 102:178103. [PMID: 19518838 DOI: 10.1103/physrevlett.102.178103] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2008] [Indexed: 05/27/2023]
Abstract
We study the population dynamics of lytic viruses which replicate slowly in dividing host cells within an organism or cell culture, and find a range of viral replication rates that allows viruses to persist, avoiding extinction of host cells or dilution of viruses at too rapid or too slow viral replication. For the within-host competition between viral strains with different replication rates, a strain with a "stable" replication rate in the persistence range could outcompete another strain. However, when strains with higher and lower than the stable value replication rates are both present, competition between strains does not result in the dominance of one strain, but in their coexistence.
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Affiliation(s)
- Jingshan Zhang
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, USA
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Komarova NL. Viral reproductive strategies: How can lytic viruses be evolutionarily competitive? J Theor Biol 2007; 249:766-84. [PMID: 17945261 DOI: 10.1016/j.jtbi.2007.09.013] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2007] [Revised: 09/08/2007] [Accepted: 09/10/2007] [Indexed: 10/22/2022]
Abstract
Viral release strategies can be roughly classified as lytic (the ones that accumulate inside the host cell and exit in a burst, killing the cell), and budding (the ones that are produced and released from the host cell gradually). Here we study the evolutionary competition between the two strategies. If all the parameters, such as the rate of viral production, cell life-span and the neutralizing capacity of the antibodies, were the same for lytic and budding viruses, the budding life-strategy would have a large evolutionary advantage. The question arises what makes lytic viruses evolutionarily competitive. We propose that it is the different removal capacity of the antibodies against budding and lytic virions. The latter exit the cell in a large burst such that the antibodies are "flooded" and a larger proportion of virions can escape the immune system and spread to new cells. We create two spatial models of virus-antibody interaction and show that for realistic parameter values, the effect of antibody flooding can indeed take place. We also argue that the lytic life cycle, including a relatively large burst-size, has evolved to promote survival in the face of antibody attack. According to the calculations, in the absence of efficient antibodies, the optimal burst size of lytic viruses would be only a few virus particles, as opposed to the observed 10(2)-10(5) viral particles. Similarly, there is an evolutionary pressure to extend the life-span as a response to antibody action.
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Affiliation(s)
- Natalia L Komarova
- Department of Mathematics, University of California, Irvine, CA 92697, USA.
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Bélanger M, Charbonneau S, Gendron D, Elela SA, Bourgaux-Ramoisy D, Bourgaux P. The gene encoding the major viral structural protein stimulates recombination in polyomavirus DNA. Virology 2001; 285:291-301. [PMID: 11437663 DOI: 10.1006/viro.2001.0953] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
RmI is a chimeric DNA molecule consisting of a polyoma genome in which a partly duplicated VP1-coding region brackets an insert of murine DNA (Ins); when transfected into mouse cells, RmI recombines intramolecularly to yield infectious, unit-length, polyoma DNA. We report here that RmI encodes a polypeptide of 337 amino acids (designated VmP1) which includes the N-terminal 328 amino acids of VP1 and 9 amino acids specified by Ins. Mutating the VmP1-coding sequence strongly reduces the ability of RmI to yield polyoma DNA. In contrast, mutating the portion of the VP1-coding sequence which is not part of the VmP1-coding sequence has little or no impact on the ability of RmI to yield polyoma DNA, even though it renders such DNA noninfectious. Thus, release of polyoma DNA from RmI involves a function of VP1 distinct from that ensuring virus assembly and propagation; since VP1 can arise only after recombination has occurred, VmP1, but not VP1, could carry such a function. We suggest that VmP1 acts in concert with VP2, which we have already reported to stimulate recombination in RmI.
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Affiliation(s)
- M Bélanger
- Department of Microbiology and Infectious Diseases, Université de Sherbrooke, Sherbrooke, Québec, J1H 5N4, Canada
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Charbonneau S, Gendron D, Samson E, Bourgaux-Ramoisy D, Bourgaux P. Involvement of minor structural proteins in recombination of polyoma virus DNA. Virology 2000; 278:122-32. [PMID: 11112488 DOI: 10.1006/viro.2000.0654] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have previously observed that a polyoma-mouse chimeric DNA molecule (RmI) in which the murine DNA insert is flanked by directly repeated viral sequences is effectively converted into unit-length polyoma DNA upon transfection of permissive mouse cells. This intramolecular recombination event appears to be dependent on VmP1, a protein encoded by RmI which includes the 328 N-terminal amino acids of polyoma VP1, and nine amino acids of murine origin carrying the C-terminus of the protein. We report here that introducing mutations into the VP2/VP3 coding sequence reduces the ability of RmI to generate polyoma DNA, even though the same mutations seem to exert little or no effect on the ability of polyoma DNA to either replicate or accumulate inside transfected cells. A mutation affecting VP2 alone being as effective as one that affects both VP2 and VP3, VP2 appears to be playing a critical role in recombination.
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Affiliation(s)
- S Charbonneau
- Department of Microbiology and Infectious Diseases, The Medical School, Sherbrooke, Québec, J1H 5N4, Canada
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Garcia MI, Perez M, Caruso M, Sthandier O, Ferreira R, Cermola M, Macchia C, Amati P. A mutation in the DE loop of the VP1 protein that prevents polyomavirus transcription and replication. Virology 2000; 272:293-301. [PMID: 10873772 DOI: 10.1006/viro.2000.0351] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Natural mutants of the DE loop of the Polyomavirus (Py) major coat protein VP1 have been previously shown to display an altered host specificity (L. Ricci, R. Maione, C. Passananti, A. Felsani, and P. Amati, 1992, J. Virol. 66, 7153-7158). To better understand the role of this outfacing loop of the VP1 protein in Py infectivity, we constructed and characterized a Py mutant (Py M17) harboring a deletion of 7 AA within the tip of the DE loop. The mutant virions obtained after DNA transfection were unable to replicate and initiate early transcription in fibroblast cells. Complementation experiments performed to rescue the deficient M17 replication by means of wt functions revealed the cis-dominance of the mutation. In situ cell fractionation experiments demonstrated that the Py mutant, like the Py wt, enters the cells, reaches the nucleus and that both the viral DNA and VP1 protein are found tightly bound to the nuclear matrix. These data suggest that the VP1 protein, associated to the viral DNA, conditions early viral gene expression and that the DE loop of the protein must be involved in this process.
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Affiliation(s)
- M I Garcia
- Istituto Pasteur-Fondazione Cenci Bolognetti, Dipartimento di Biotecnologie Cellulari, Sezione di Genetica Molecolare, Università di Roma La Sapienza, Viale Regina Elena 324, Rome, 00161, Italy
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Nakanishi-Matsui M, Hayashi Y, Kitamura Y, Koike K. Integrated hepatitis B virus DNA preserves the binding sequence of transcription factor Yin and Yang 1 at the virus-cell junction. J Virol 2000; 74:5562-8. [PMID: 10823863 PMCID: PMC112043 DOI: 10.1128/jvi.74.12.5562-5568.2000] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Accumulated findings have indicated that hepatitis B virus (HBV) DNA integrates into the cellular DNA of HBV-infected chronic hepatitis tissues. The integrated sequence (IS) of HBV DNA at the virus-cell junction is conserved in a 25-bp region which is adjacent to direct repeat 1. A cellular protein which we purified from the nuclear extract of HepG2 cells binds to the IS and was designated IS binding protein 3 (ISBP3). The amino acid sequence of ISBP3 was determined and found to be identical to that of transcription initiation factor Yin and Yang 1 (YY1). An antibody against C-terminal amino acids of YY1 recognized ISBP3 in a Western blot analysis and an electrophoretic mobility shift assay. Furthermore, ISBP3 also interacted with Y3, which corresponds to the YY1 binding sequence, to enhance intramolecular recombination of polyomavirus DNA. Although YY1 is known as a transcription factor, the IS did not exhibit any effect on the transcription of precore and pregenome RNAs. The possible involvement of YY1 in the intramolecular recombination of linear replicative HBV DNA has been examined (Y. Hayashi et al., unpublished data). Data suggest that YY1 is involved in the joining reaction between HBV DNA and cellular DNA to form the virus-cell junction.
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MESH Headings
- Amino Acid Sequence
- Base Sequence
- Binding Sites
- Blotting, Western
- Chromatography, Affinity
- DNA/genetics
- DNA/metabolism
- DNA, Viral/genetics
- DNA, Viral/metabolism
- DNA-Binding Proteins/chemistry
- DNA-Binding Proteins/isolation & purification
- DNA-Binding Proteins/metabolism
- Erythroid-Specific DNA-Binding Factors
- Genome, Viral
- Hepatitis B virus/genetics
- Humans
- Molecular Sequence Data
- Molecular Weight
- Mutation/genetics
- Nuclear Proteins/chemistry
- Nuclear Proteins/isolation & purification
- Nuclear Proteins/metabolism
- Polyomavirus/genetics
- Protein Binding
- RNA, Viral/biosynthesis
- RNA, Viral/genetics
- Recombination, Genetic/genetics
- Response Elements/genetics
- Substrate Specificity
- Transcription Factors/chemistry
- Transcription Factors/isolation & purification
- Transcription Factors/metabolism
- Transcription, Genetic/genetics
- Tumor Cells, Cultured
- Virus Integration/genetics
- YY1 Transcription Factor
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Affiliation(s)
- M Nakanishi-Matsui
- Department of Gene Research, The Cancer Institute (JFCR), Toshima-ku, Tokyo 170-8455, Japan
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Palková Z, Spanielová H, Gottifredi V, Hollanderová D, Forstová J, Amati P. The polyomavirus major capsid protein VP1 interacts with the nuclear matrix regulatory protein YY1. FEBS Lett 2000; 467:359-64. [PMID: 10675569 DOI: 10.1016/s0014-5793(00)01170-4] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
Polyomavirus reaches the nucleus in a still encapsidated form, and the viral genome is readily found in association with the nuclear matrix. This association is thought to be essential for viral replication. In order to identify the protein(s) involved in the virus-nuclear matrix interaction, we focused on the possible roles exerted by the multifunctional cellular nuclear matrix protein Yin Yang 1 (YY1) and by the viral major capsid protein VP1. In the present work we report on the in vivo association between YY1 and VP1. Using the yeast two-hybrid system we demonstrate that the VP1 and YY1 proteins physically interact through the D-E region of VP1 and the activation domain of YY1.
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Affiliation(s)
- Z Palková
- Instituto Pasteur - Fondazione Cenci Bolognetti, Dipartimento di Biotecnologie Cellulari ed Ematologia, Sezione di Genetica Molecolare, Università di Roma La Sapienza, Viale Regina Elena 324, 00161, Rome, Italy
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Fortier LC, Delbecchi L, Bourgaux-Ramoisy D, Bourgaux P. Rescue of polyomavirus DNA after co-transfection of recombinant plasmids with viral DNA fragments. BIOCHIMICA ET BIOPHYSICA ACTA 1998; 1395:96-109. [PMID: 9434157 DOI: 10.1016/s0167-4781(97)00133-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Plasmid DNA bearing a single copy of the mouse polyomavirus (Py) genome (template A) was transfected into murine cells together with another DNA (template B) carrying intact the viral sequence interrupted in template A. Rescue of unit-length Py DNA including markers from both templates was observed as long as the viral DNA in B overlapped that split in A by one kbp or more. Such rescue was not detectably enhanced by linearizing either or both template(s), and occurred in the absence of template replication. These findings are suggestive of an intermolecular recombination process taking place soon after transfection and starting with homologous pairing between A and B. Such pairing would facilitate removal of vector DNA from one template (A), followed by closure of the resulting break or gap through recombination with the other template (B). Since B may consist of a PCR-synthesized DNA fragment, these observations could conceivably serve as the basis for a method of generating mutant viral genomes.
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Affiliation(s)
- L C Fortier
- Département de Microbiologie et d'Infectiologie, Faculté de Médecine, Université de Sherbrooke, Québec, Canada
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Shi Y, Lee JS, Galvin KM. Everything you have ever wanted to know about Yin Yang 1...... BIOCHIMICA ET BIOPHYSICA ACTA 1997; 1332:F49-66. [PMID: 9141463 DOI: 10.1016/s0304-419x(96)00044-3] [Citation(s) in RCA: 214] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Y Shi
- Department of Pathology, Harvard Medical School, Boston, MA 02115, USA.
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