Winkler, Michael

[["dc.bibliographiccitation.issue","1"],["dc.bibliographiccitation.journal","Virology Journal"],["dc.bibliographiccitation.volume","17"],["dc.contributor.author","Lambertz, Ruth Lydia Olga"],["dc.contributor.author","Gerhauser, Ingo"],["dc.contributor.author","Nehlmeier, Inga"],["dc.contributor.author","Gärtner, Sabine"],["dc.contributor.author","Winkler, Michael"],["dc.contributor.author","Leist, Sarah Rebecca"],["dc.contributor.author","Kollmus, Heike"],["dc.contributor.author","Pöhlmann, Stefan"],["dc.contributor.author","Schughart, Klaus"],["dc.date.accessioned","2020-12-10T18:39:01Z"],["dc.date.available","2020-12-10T18:39:01Z"],["dc.date.issued","2020"],["dc.identifier.doi","10.1186/s12985-020-01323-z"],["dc.identifier.eissn","1743-422X"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/17233"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/77513"],["dc.language.iso","en"],["dc.notes.intern","DOI Import GROB-354"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","H2 influenza A virus is not pathogenic in Tmprss2 knock-out mice"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0224082"],["dc.bibliographiccitation.issue","11"],["dc.bibliographiccitation.journal","PLoS One"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Winkler, Michael"],["dc.contributor.author","Gärtner, Sabine"],["dc.contributor.author","Markus, Lara"],["dc.contributor.author","Hoffmann, Markus"],["dc.contributor.author","Nehlmeier, Inga"],["dc.contributor.author","Krawczak, Michael"],["dc.contributor.author","Sauermann, Ulrike"],["dc.contributor.author","Pöhlmann, Stefan"],["dc.date.accessioned","2019-11-05T08:51:28Z"],["dc.date.accessioned","2021-10-27T13:13:08Z"],["dc.date.available","2019-11-05T08:51:28Z"],["dc.date.available","2021-10-27T13:13:08Z"],["dc.date.issued","2019"],["dc.description.abstract","The experimental infection of rhesus macaques (rh) with simian immunodeficiency virus (SIV) is an important model for human immunodeficiency virus (HIV) infection of humans. The interferon-induced transmembrane protein 3 (IFITM3) inhibits HIV and SIV infection at the stage of host cell entry. However, it is still unclear to what extent the antiviral activity of IFITM3 observed in cell culture translates into inhibition of HIV/SIV spread in the infected host. We have shown previously that although rhIFITM3 inhibits SIV entry into cultured cells, polymorphisms in the rhIFITM3 gene are not strongly associated with viral load or disease progression in SIV infected macaques. Here, we examined whether rhIFITM3(2), which is closely related to rhIFITM3 at the sequence level, exerts antiviral activity and whether polymorphisms in the rhIFITM3(2) gene impact the course of SIV infection. We show that expression of rhIFITM3(2) is interferon-inducible and inhibits SIV entry into cells, although with reduced efficiency as compared to rhIFITM3. We further report the identification of 19 polymorphisms in the rhIFITM3(2) gene. However, analysis of a well characterized cohort of SIV infected macaques revealed that none of the polymorphisms had a significant impact upon the course of SIV infection. These results and our previous work suggest that polymorphisms in the rhIFITM3 and rhIFITM3(2) genes do not strongly modulate the course of SIV infection in macaques."],["dc.identifier.doi","10.1371/journal.pone.0224082"],["dc.identifier.pmid","31682595"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16596"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91754"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.eissn","1932-6203"],["dc.relation.issn","1932-6203"],["dc.relation.orgunit","Deutsches Primatenzentrum"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","599"],["dc.title","Role of rhesus macaque IFITM3(2) in simian immunodeficiency virus infection of macaques"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e01488-16"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Virology"],["dc.bibliographiccitation.volume","91"],["dc.contributor.author","Wrensch, Florian"],["dc.contributor.author","Hoffmann, Markus"],["dc.contributor.author","Gärtner, Sabine"],["dc.contributor.author","Nehlmeier, Inga"],["dc.contributor.author","Winkler, Michael"],["dc.contributor.author","Pöhlmann, Stefan"],["dc.contributor.editor","Ross, Susan R."],["dc.date.accessioned","2022-10-06T13:25:35Z"],["dc.date.available","2022-10-06T13:25:35Z"],["dc.date.issued","2017"],["dc.description.abstract","ABSTRACT\n Interferon-induced transmembrane proteins (IFITMs) can inhibit the cellular entry of several enveloped viruses, including simian immunodeficiency virus (SIV). The blockade of SIV by IFITMs is isolate specific, raising the question of which parameters impact sensitivity to IFITM. We show that the virion context in which SIV-Env is presented and the efficiency of virion incorporation determine Env susceptibility to inhibition by IFITMs. Thus, determinants other than the nature of the envelope protein can impact the IFITM sensitivity of viral entry.\n \n IMPORTANCE\n The host cell-encoded IFITM proteins can block viral entry and are an important component of the innate defenses against viral infection. However, the determinants controlling whether a virus is susceptible to blockade by IFITM proteins are incompletely understood. Our study shows that the amount of envelope proteins incorporated into virions as well as the nature of the virion particle itself can impact the sensitivity of viral entry to IFITMs. These results show for the first time that determinants other than the viral envelope protein can impact sensitivity to IFITM and have implications for the interpretation of previously published data on inhibition of viruses by IFITM proteins. Moreover, our findings might help to define the mechanism underlying the antiviral activity of IFITM proteins."],["dc.description.sponsorship"," Leibniz-Gemeinschaft https://doi.org/10.13039/501100001664"],["dc.identifier.doi","10.1128/JVI.01488-16"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/114874"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-602"],["dc.relation.eissn","1098-5514"],["dc.relation.issn","0022-538X"],["dc.relation.orgunit","Deutsches Primatenzentrum"],["dc.rights.uri","http://creativecommons.org/licenses/by/4.0/"],["dc.title","Virion Background and Efficiency of Virion Incorporation Determine Susceptibility of Simian Immunodeficiency Virus Env-Driven Viral Entry to Inhibition by IFITM Proteins"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0214968"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","PLOS ONE"],["dc.bibliographiccitation.volume","14"],["dc.contributor.author","Plegge, Teresa"],["dc.contributor.author","Spiegel, Martin"],["dc.contributor.author","Krüger, Nadine"],["dc.contributor.author","Nehlmeier, Inga"],["dc.contributor.author","Winkler, Michael"],["dc.contributor.author","González Hernández, Mariana"],["dc.contributor.author","Pöhlmann, Stefan"],["dc.date.accessioned","2019-07-09T11:51:10Z"],["dc.date.available","2019-07-09T11:51:10Z"],["dc.date.issued","2019"],["dc.description.abstract","Emerging viruses such as severe fever and thrombocytopenia syndrome virus (SFTSV) and Ebola virus (EBOV) are responsible for significant morbidity and mortality. Host cell proteases that process the glycoproteins of these viruses are potential targets for antiviral intervention. The aspartyl protease signal peptide peptidase (SPP) has recently been shown to be required for processing of the glycoprotein precursor, Gn/Gc, of Bunyamwera virus and for viral infectivity. Here, we investigated whether SPP is also required for infectivity of particles bearing SFTSV-Gn/Gc. Entry driven by the EBOV glycoprotein (GP) and the Lassa virus glycoprotein (LASV-GPC) depends on the cysteine proteases cathepsin B and L (CatB/CatL) and the serine protease subtilisin/kexin-isozyme 1 (SKI-1), respectively, and was examined in parallel for control purposes. We found that inhibition of SPP and SKI-1 did not interfere with SFTSV Gn + Gc-driven entry but, unexpectedly, blocked entry mediated by EBOV-GP. The inhibition occurred at the stage of proteolytic activation and the SPP inhibitor was found to block CatL/CatB activity. In contrast, the SKI-1 inhibitor did not interfere with CatB/CatL activity but disrupted CatB localization in endo/lysosomes, the site of EBOV-GP processing. These results underline the potential of protease inhibitors for antiviral therapy but also show that previously characterized compounds might exert broader specificity than initially appreciated and might block viral entry via diverse mechanisms."],["dc.identifier.doi","10.1371/journal.pone.0214968"],["dc.identifier.pmid","30973897"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/16063"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/59889"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","599"],["dc.title","Inhibitors of signal peptide peptidase and subtilisin/kexin-isozyme 1 inhibit Ebola virus glycoprotein-driven cell entry by interfering with activity and cellular localization of endosomal cathepsins"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0179177"],["dc.bibliographiccitation.issue","6"],["dc.bibliographiccitation.journal","PloS one"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Reinke, Lennart Michel"],["dc.contributor.author","Spiegel, Martin"],["dc.contributor.author","Plegge, Teresa"],["dc.contributor.author","Hartleib, Anika"],["dc.contributor.author","Nehlmeier, Inga"],["dc.contributor.author","Gierer, Stefanie"],["dc.contributor.author","Hoffmann, Markus"],["dc.contributor.author","Hofmann-Winkler, Heike"],["dc.contributor.author","Winkler, Michael"],["dc.contributor.author","Pöhlmann, Stefan"],["dc.date.accessioned","2019-07-09T11:43:31Z"],["dc.date.available","2019-07-09T11:43:31Z"],["dc.date.issued","2017"],["dc.description.abstract","The spike (S) protein of severe acute respiratory syndrome coronavirus (SARS-CoV) mediates viral entry into target cells. Cleavage and activation of SARS S by a host cell protease is essential for infectious viral entry and the responsible enzymes are potential targets for antiviral intervention. The type II transmembrane serine protease TMPRSS2 cleaves and activates SARS S in cell culture and potentially also in the infected host. Here, we investigated which determinants in SARS S control cleavage and activation by TMPRSS2. We found that SARS S residue R667, a previously identified trypsin cleavage site, is also required for S protein cleavage by TMPRSS2. The cleavage fragments produced by trypsin and TMPRSS2 differed in their decoration with N-glycans, suggesting that these proteases cleave different SARS S glycoforms. Although R667 was required for SARS S cleavage by TMPRSS2, this residue was dispensable for TMPRSS2-mediated S protein activation. Conversely, residue R797, previously reported to be required for SARS S activation by trypsin, was dispensable for S protein cleavage but required for S protein activation by TMPRSS2. Collectively, these results show that different residues in SARS S control cleavage and activation by TMPRSS2, suggesting that these processes are more complex than initially appreciated."],["dc.identifier.doi","10.1371/journal.pone.0179177"],["dc.identifier.pmid","28636671"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/14554"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/58903"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.relation.issn","1932-6203"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.subject.ddc","599"],["dc.title","Different residues in the SARS-CoV spike protein determine cleavage and activation by the host cell protease TMPRSS2."],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","9178"],["dc.bibliographiccitation.issue","18"],["dc.bibliographiccitation.journal","Journal of Virology"],["dc.bibliographiccitation.lastpage","9188"],["dc.bibliographiccitation.volume","89"],["dc.contributor.author","Gnirß, Kerstin"],["dc.contributor.author","Zmora, Pawel"],["dc.contributor.author","Blazejewska, Paulina"],["dc.contributor.author","Winkler, Michael"],["dc.contributor.author","Lins, Anika"],["dc.contributor.author","Nehlmeier, Inga"],["dc.contributor.author","Gärtner, Sabine"],["dc.contributor.author","Moldenhauer, Anna-Sophie"],["dc.contributor.author","Hofmann-Winkler, Heike"],["dc.contributor.author","Wolff, Thorsten"],["dc.contributor.editor","Lyles, D. S."],["dc.date.accessioned","2022-10-06T13:25:33Z"],["dc.date.available","2022-10-06T13:25:33Z"],["dc.date.issued","2015"],["dc.description.abstract","ABSTRACT\n The expression of the antiviral host cell factor tetherin is induced by interferon and can inhibit the release of enveloped viruses from infected cells. The Vpu protein of HIV-1 antagonizes the antiviral activity of tetherin, and tetherin antagonists with Vpu-like activity have been identified in other viruses. In contrast, it is incompletely understood whether tetherin inhibits influenza A virus (FLUAV) release and whether FLUAV encodes tetherin antagonists. Here, we show that release of several laboratory-adapted FLUAV strains and a seasonal FLUAV strain is inhibited by tetherin, while pandemic FLUAV A/Hamburg/4/2009 is resistant. Studies with a virus-like particle system and analysis of reassortant viruses provided evidence that the viral hemagglutinin (HA) is an important determinant of tetherin antagonism but requires the presence of its cognate neuraminidase (NA) to inhibit tetherin. Finally, tetherin antagonism by FLUAV was dependent on the virion context, since retrovirus release from tetherin-positive cells was not rescued, and correlated with an HA- and NA-dependent reduction in tetherin expression. In sum, our study identifies HA and NA proteins of certain pandemic FLUAV as tetherin antagonists, which has important implications for understanding FLUAV pathogenesis.\n \n IMPORTANCE\n Influenza A virus (FLUAV) infection is responsible for substantial global morbidity and mortality, and understanding how the virus evades the immune defenses of the host may uncover novel targets for antiviral intervention. Tetherin is an antiviral effector molecule of the innate immune system which can contribute to control of viral invasion. However, it has been unclear whether FLUAV is inhibited by tetherin and whether these viruses encode tetherin-antagonizing proteins. Our observation that several pandemic FLUAV strains can counteract tetherin via their HA and NA proteins identifies these proteins as novel tetherin antagonists and indicates that HA/NA-dependent inactivation of innate defenses may contribute to the efficient spread of pandemic FLUAV."],["dc.identifier.doi","10.1128/JVI.00615-15"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/114866"],["dc.language.iso","en"],["dc.notes.intern","DOI-Import GROB-602"],["dc.relation.eissn","1098-5514"],["dc.relation.issn","0022-538X"],["dc.relation.orgunit","Deutsches Primatenzentrum"],["dc.rights.uri","https://journals.asm.org/non-commercial-tdm-license"],["dc.title","Tetherin Sensitivity of Influenza A Viruses Is Strain Specific: Role of Hemagglutinin and Neuraminidase"],["dc.type","journal_article"],["dc.type.internalPublication","unknown"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e43337"],["dc.bibliographiccitation.issue","8"],["dc.bibliographiccitation.journal","PLoS ONE"],["dc.bibliographiccitation.volume","7"],["dc.contributor.author","Winkler, Michael"],["dc.contributor.author","Bertram, Stephanie"],["dc.contributor.author","Gnirß, Kerstin"],["dc.contributor.author","Nehlmeier, Inga"],["dc.contributor.author","Gawanbacht, Ali"],["dc.contributor.author","Kirchhoff, Frank"],["dc.contributor.author","Ehrhardt, Christina"],["dc.contributor.author","Ludwig, Stephan"],["dc.contributor.author","Kiene, Miriam"],["dc.contributor.author","Moldenhauer, Anna-Sophie"],["dc.contributor.author","Goedecke, Ulrike"],["dc.contributor.author","Karsten, Christina B."],["dc.contributor.author","Kühl, Annika"],["dc.contributor.author","Pöhlmann, Stefan"],["dc.date.accessioned","2019-07-09T11:53:44Z"],["dc.date.available","2019-07-09T11:53:44Z"],["dc.date.issued","2012"],["dc.description.abstract","The interferon-induced host cell factor tetherin inhibits release of human immunodeficiency virus (HIV) from the plasma membrane of infected cells and is counteracted by the HIV-1 protein Vpu. Influenza A virus (FLUAV) also buds from the plasma membrane and is not inhibited by tetherin. Here, we investigated if FLUAV encodes a functional equivalent of Vpu for tetherin antagonism. We found that expression of the FLUAV protein NS1, which antagonizes the interferon (IFN) response, did not block the tetherin-mediated restriction of HIV release, which was rescued by Vpu. Similarly, tetherinmediated inhibition of HIV release was not rescued by FLUAV infection. In contrast, FLUAV infection induced tetherin expression on target cells in an IFN-dependent manner. These results suggest that FLUAV escapes the antiviral effects of tetherin without encoding a tetherin antagonist with Vpu-like activity."],["dc.identifier.doi","10.1371/journal.pone.0043337"],["dc.identifier.fs","588509"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/7923"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/60484"],["dc.language.iso","en"],["dc.notes.intern","Merged from goescholar"],["dc.rights","CC BY 2.5"],["dc.rights.uri","https://creativecommons.org/licenses/by/2.5"],["dc.title","Influenza A Virus Does Not Encode a Tetherin Antagonist with Vpu-Like Activity and Induces IFN-Dependent Tetherin Expression in Infected Cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.artnumber","e0189073"],["dc.bibliographiccitation.firstpage","1"],["dc.bibliographiccitation.issue","12"],["dc.bibliographiccitation.journal","PLoS One"],["dc.bibliographiccitation.lastpage","19"],["dc.bibliographiccitation.volume","12"],["dc.contributor.author","Brinkmann, Constantin"],["dc.contributor.author","Hoffmann, Markus"],["dc.contributor.author","Lübke, Anastasia"],["dc.contributor.author","Nehlmeier, Inga"],["dc.contributor.author","Krämer-Kühl, Annika"],["dc.contributor.author","Winkler, Michael"],["dc.contributor.author","Pöhlmann, Stefan"],["dc.date.accessioned","2018-11-16T10:48:50Z"],["dc.date.accessioned","2021-10-27T13:13:15Z"],["dc.date.available","2018-11-16T10:48:50Z"],["dc.date.available","2021-10-27T13:13:15Z"],["dc.date.issued","2017"],["dc.description.abstract","Vesicular stomatitis virus (VSV) release from infected cells is inhibited by the interferon (IFN)-inducible antiviral host cell factor tetherin (BST-2, CD317). However, several viruses encode tetherin antagonists and it is at present unknown whether residual VSV spread in tetherin-positive cells is also promoted by a virus-encoded tetherin antagonist. Here, we show that the viral glycoprotein (VSV-G) antagonizes tetherin in transfected cells, although with reduced efficiency as compared to the HIV-1 Vpu protein. Tetherin antagonism did not involve alteration of tetherin expression and was partially dependent on a GXXXG motif in the transmembrane domain of VSV-G. However, mutation of the GXXXG motif did not modulate tetherin sensitivity of infectious VSV. These results identify VSV-G as a tetherin antagonist in transfected cells but fail to provide evidence for a contribution of tetherin antagonism to viral spread."],["dc.identifier.doi","10.1371/journal.pone.0189073"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?gs-1/15673"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/91764"],["dc.language.iso","en"],["dc.notes.intern","Migrated from goescholar"],["dc.relation.issn","1932-6203"],["dc.relation.orgunit","Deutsches Primatenzentrum"],["dc.rights","CC BY 4.0"],["dc.rights.uri","https://creativecommons.org/licenses/by/4.0"],["dc.title","The glycoprotein of vesicular stomatitis virus promotes release of virus-like particles from tetherin-positive cells"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]