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  1. Article ; Online: No Evidence for Human Monocyte-Derived Macrophage Infection and Antibody-Mediated Enhancement of SARS-CoV-2 Infection.

    García-Nicolás, Obdulio / V'kovski, Philip / Zettl, Ferdinand / Zimmer, Gert / Thiel, Volker / Summerfield, Artur

    Frontiers in cellular and infection microbiology

    2021  Volume 11, Page(s) 644574

    Abstract: Vaccines are essential to control the spread of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) and to protect the vulnerable population. However, one safety concern of vaccination is the possible development of antibody-dependent ... ...

    Abstract Vaccines are essential to control the spread of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) and to protect the vulnerable population. However, one safety concern of vaccination is the possible development of antibody-dependent enhancement (ADE) of SARS-CoV-2 infection. The potential infection of Fc receptor bearing cells such as macrophages, would support continued virus replication and inflammatory responses, and thereby potentially worsen the clinical outcome of COVID-19. Here we demonstrate that SARS-CoV-2 and SARS-CoV neither infect human monocyte-derived macrophages (hMDM) nor induce inflammatory cytokines in these cells, in sharp contrast to Middle East respiratory syndrome (MERS) coronavirus and the common cold human coronavirus 229E. Furthermore, serum from convalescent COVID-19 patients neither induced enhancement of SARS-CoV-2 infection nor innate immune response in hMDM. Although, hMDM expressed angiotensin-converting enzyme 2, no or very low levels of transmembrane protease serine 2 were found. These results support the view that ADE may not be involved in the immunopathological processes associated with COVID-19, however, more studies are necessary to understand the potential contribution of antibodies-virus complexes with other cells expressing FcR receptors.
    MeSH term(s) Antibodies, Viral ; COVID-19 ; Humans ; Macrophages ; Middle East Respiratory Syndrome Coronavirus ; SARS-CoV-2
    Chemical Substances Antibodies, Viral
    Language English
    Publishing date 2021-04-12
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2619676-1
    ISSN 2235-2988 ; 2235-2988
    ISSN (online) 2235-2988
    ISSN 2235-2988
    DOI 10.3389/fcimb.2021.644574
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Serine enrichment in tumors promotes regulatory T cell accumulation through sphinganine-mediated regulation of c-Fos.

    Ma, Sicong / Sandhoff, Roger / Luo, Xiu / Shang, Fuwei / Shi, Qiaozhen / Li, Zhaolong / Wu, Jingxia / Ming, Yanan / Schwarz, Frank / Madi, Alaa / Weisshaar, Nina / Mieg, Alessa / Hering, Marvin / Zettl, Ferdinand / Yan, Xin / Mohr, Kerstin / Ten Bosch, Nora / Li, Zhe / Poschet, Gernot /
    Rodewald, Hans-Reimer / Papavasiliou, Nina / Wang, Xi / Gao, Pu / Cui, Guoliang

    Science immunology

    2024  Volume 9, Issue 94, Page(s) eadg8817

    Abstract: ... ...

    Abstract CD4
    MeSH term(s) Neoplasms ; Programmed Cell Death 1 Receptor/metabolism ; Serine/metabolism ; Sphingolipids/metabolism ; Sphingosine/analogs & derivatives ; T-Lymphocytes, Regulatory ; Tumor Microenvironment
    Chemical Substances Programmed Cell Death 1 Receptor ; safingol (OWA98U788S) ; Serine (452VLY9402) ; Sphingolipids ; Sphingosine (NGZ37HRE42)
    Language English
    Publishing date 2024-04-19
    Publishing country United States
    Document type Journal Article
    ISSN 2470-9468
    ISSN (online) 2470-9468
    DOI 10.1126/sciimmunol.adg8817
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Regulatory T cell-derived interleukin-15 promotes the diversity of immunological memory.

    Madi, Alaa / Wu, Jingxia / Ma, Sicong / Weisshaar, Nina / Mieg, Alessa / Hering, Marvin / Ming, Yanan / Zettl, Ferdinand / Mohr, Kerstin / Ten Bosch, Nora / Schlimbach, Tilo / Hertel, Franziska / Cui, Guoliang

    European journal of immunology

    2022  Volume 53, Issue 1, Page(s) e2149400

    Abstract: While the immunosuppressive function of regulatory T (Treg) cells has been extensively studied, their immune-supportive roles have been less well investigated. Using a lymphocytic choriomeningitis virus (LCMV) Armstrong infection mouse model, we found ... ...

    Abstract While the immunosuppressive function of regulatory T (Treg) cells has been extensively studied, their immune-supportive roles have been less well investigated. Using a lymphocytic choriomeningitis virus (LCMV) Armstrong infection mouse model, we found that Treg cell-derived interleukin (IL)-15 is required for long-term maintenance of the KLRG1
    MeSH term(s) Mice ; Animals ; T-Lymphocytes, Regulatory ; Lymphocytic choriomeningitis virus ; Immunologic Memory ; Interleukin-15 ; Lymphocytic Choriomeningitis ; CD8-Positive T-Lymphocytes ; Mice, Inbred C57BL ; Interleukin-2
    Chemical Substances Interleukin-15 ; Interleukin-2
    Language English
    Publishing date 2022-11-04
    Publishing country Germany
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 120108-6
    ISSN 1521-4141 ; 0014-2980
    ISSN (online) 1521-4141
    ISSN 0014-2980
    DOI 10.1002/eji.202149400
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: The malate shuttle detoxifies ammonia in exhausted T cells by producing 2-ketoglutarate.

    Weisshaar, Nina / Ma, Sicong / Ming, Yanan / Madi, Alaa / Mieg, Alessa / Hering, Marvin / Zettl, Ferdinand / Mohr, Kerstin / Ten Bosch, Nora / Stichling, Diana / Buettner, Michael / Poschet, Gernot / Klinke, Glynis / Schulz, Michael / Kunze-Rohrbach, Nina / Kerber, Carolin / Klein, Isabel Madeleine / Wu, Jingxia / Wang, Xi /
    Cui, Guoliang

    Nature immunology

    2023  Volume 24, Issue 11, Page(s) 1921–1932

    Abstract: The malate shuttle is traditionally understood to maintain ... ...

    Abstract The malate shuttle is traditionally understood to maintain NAD
    MeSH term(s) Humans ; Oxidation-Reduction ; NAD/metabolism ; Ketoglutaric Acids/metabolism ; Ammonia ; Malates/metabolism ; CD8-Positive T-Lymphocytes/metabolism ; Persistent Infection ; Antiviral Agents
    Chemical Substances NAD (0U46U6E8UK) ; Ketoglutaric Acids ; Ammonia (7664-41-7) ; malic acid (817L1N4CKP) ; Malates ; Antiviral Agents
    Language English
    Publishing date 2023-10-09
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2016987-5
    ISSN 1529-2916 ; 1529-2908
    ISSN (online) 1529-2916
    ISSN 1529-2908
    DOI 10.1038/s41590-023-01636-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article: Rapid Quantification of SARS-CoV-2-Neutralizing Antibodies Using Propagation-Defective Vesicular Stomatitis Virus Pseudotypes.

    Zettl, Ferdinand / Meister, Toni Luise / Vollmer, Tanja / Fischer, Bastian / Steinmann, Jörg / Krawczyk, Adalbert / V'kovski, Philip / Todt, Daniel / Steinmann, Eike / Pfaender, Stephanie / Zimmer, Gert

    Vaccines

    2020  Volume 8, Issue 3

    Abstract: Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2, a new member of the ... ...

    Abstract Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2, a new member of the genus
    Keywords covid19
    Language English
    Publishing date 2020-07-15
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2703319-3
    ISSN 2076-393X
    ISSN 2076-393X
    DOI 10.3390/vaccines8030386
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: No evidence for human monocyte-derived macrophage infection and antibody-mediated enhancement of SARS-CoV-2 infection

    Garcia-Nicolas, Obdulio / V'kovski, Philip / Zettl, Ferdinand / Zimmer, Gert / Thiel, Volker / Summerfield, Artur

    bioRxiv

    Abstract: Vaccines are essential to control the spread of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) and to protect the vulnerable population. However, one safety concern of vaccination is the possible development of antibody-dependent ... ...

    Abstract Vaccines are essential to control the spread of severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) and to protect the vulnerable population. However, one safety concern of vaccination is the possible development of antibody-dependent enhancement (ADE) of SARS-CoV-2 infection. The potential infection of Fc receptor bearing cells such as macrophages, would support continued virus replication and inflammatory responses, and thereby potentially worsen the clinical outcome of COVID-19. Here we demonstrate that SARS-CoV-2 and SARS-CoV-1 neither infect human monocyte-derived macrophages nor induce inflammatory cytokines in these cells, in sharp contrast to Middle East respiratory syndrome (MERS) coronavirus and the common cold human coronavirus 229E. Furthermore, serum from convalescent COVID-19 patients neither induced enhancement of SARS-CoV-2 infection nor innate immune response in human macrophages. These results support the view that ADE may not be involved in the immunopathological processes associated with COVID-19, however, more studies are necessary to understand the potential contribution of antibodies-virus complexes with other cells expressing FcR receptors.
    Keywords covid19
    Language English
    Publishing date 2020-12-23
    Publisher Cold Spring Harbor Laboratory
    Document type Article ; Online
    DOI 10.1101/2020.12.22.423940
    Database COVID19

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  7. Article ; Online: Rgs16 promotes antitumor CD8

    Weisshaar, Nina / Wu, Jingxia / Ming, Yanan / Madi, Alaa / Hotz-Wagenblatt, Agnes / Ma, Sicong / Mieg, Alessa / Hering, Marvin / Zettl, Ferdinand / Mohr, Kerstin / Schlimbach, Tilo / Ten Bosch, Nora / Hertel, Franziska / Müller, Lisann / Byren, Hannah / Wang, Mona / Borgers, Helena / Munz, Mareike / Schmitt, Lukas /
    van der Hoeven, Franciscus / Kloz, Ulrich / Carretero, Rafael / Schleußner, Nikolai / Jackstadt, Rene-Filip / Hofmann, Ilse / Cui, Guoliang

    Science immunology

    2022  Volume 7, Issue 71, Page(s) eabh1873

    Abstract: T cells become functionally exhausted in tumors, limiting T cell-based immunotherapies. Although several transcription factors regulating the exhausted T ( ... ...

    Abstract T cells become functionally exhausted in tumors, limiting T cell-based immunotherapies. Although several transcription factors regulating the exhausted T (T
    MeSH term(s) Animals ; CD8-Positive T-Lymphocytes ; Cell Differentiation ; Humans ; Immunotherapy ; Lymphocytes, Tumor-Infiltrating ; Mice ; Programmed Cell Death 1 Receptor ; RGS Proteins/immunology
    Chemical Substances Programmed Cell Death 1 Receptor ; RGS Proteins ; RGS16 protein
    Language English
    Publishing date 2022-05-27
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ISSN 2470-9468
    ISSN (online) 2470-9468
    DOI 10.1126/sciimmunol.abh1873
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Rapid Quantification of SARS-CoV-2-Neutralizing Antibodies Using Propagation-Defective Vesicular Stomatitis Virus Pseudotypes.

    Zettl, Ferdinand / Meister, Toni Luise / Vollmer, Tanja / Fischer, Bastian / Steinmann, Jörg / Krawczyk, Adalbert / V'kovski, Philip / Todt, Daniel / Steinmann, Eike / Pfaender, Stephanie / Zimmer, Gert

    Zettl, Ferdinand; Meister, Toni Luise; Vollmer, Tanja; Fischer, Bastian; Steinmann, Jörg; Krawczyk, Adalbert; V'kovski, Philip; Todt, Daniel; Steinmann, Eike; Pfaender, Stephanie; Zimmer, Gert (2020). Rapid Quantification of SARS-CoV-2-Neutralizing Antibodies Using Propagation-Defective Vesicular Stomatitis Virus Pseudotypes. Vaccines, 8(3) MDPI 10.3390/vaccines8030386

    2020  

    Abstract: Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2, a new member of the genus Betacoronavirus, is a pandemic virus, which has caused numerous fatalities, particularly in the elderly and persons with underlying morbidities. At present, there ...

    Abstract Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2, a new member of the genus Betacoronavirus, is a pandemic virus, which has caused numerous fatalities, particularly in the elderly and persons with underlying morbidities. At present, there are no approved vaccines nor antiviral therapies available. The detection and quantification of SARS-CoV-2-neutralizing antibodies plays a crucial role in the assessment of the immune status of convalescent COVID-19 patients, evaluation of recombinant therapeutic antibodies, and the evaluation of novel vaccines. To detect SARS-CoV-2-neutralizing antibodies, classically, a virus-neutralization test has to be performed at biosafety level 3, considerably limiting the general use of this test. In the present work, a biosafety level 1 pseudotype virus assay based on a propagation-incompetent vesicular stomatitis virus (VSV) has been used to determine the neutralizing antibody titers in convalescent COVID-19 patients. The neutralization titers in serum of two independently analyzed patient cohorts were available within 18 h and correlated well with those obtained with a classical SARS-CoV-2 neutralization test (Pearson correlation coefficients of r = 0.929 and r = 0.939, respectively). Most convalescent COVID-19 patients had only low titers of neutralizing antibodies (ND50 < 320). The sera of convalescent COVID-19 patients also neutralized pseudotype virus displaying the SARS-CoV-1 spike protein on their surface, which is homologous to the SARS-CoV-2 spike protein. In summary, we report a robust virus-neutralization assay, which can be used at low biosafety level 1 to rapidly quantify SARS-CoV-2-neutralizing antibodies in convalescent COVID-19 patients and vaccinated individuals.
    Keywords 630 Agriculture ; covid19
    Subject code 616
    Language English
    Publishing date 2020-07-15
    Publisher MDPI
    Publishing country ch
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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  9. Article: Rapid Quantification of SARS-CoV-2-Neutralizing Antibodies Using Propagation-Defective Vesicular Stomatitis Virus Pseudotypes

    Zettl, Ferdinand / Meister, Toni Luise / Vollmer, Tanja / Fischer, Bastian / Steinmann, Jörg Krawczyk / Adalbert, V’kovski Philip / Todt, Daniel / Steinmann, Eike / Pfaender, Stephanie / Zimmer, Gert

    Vaccines

    Abstract: Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2, a new member of the genus Betacoronavirus, is a pandemic virus, which has caused numerous fatalities, particularly in the elderly and persons with underlying morbidities At present, there ... ...

    Abstract Severe acute respiratory syndrome coronavirus type 2 (SARS-CoV-2, a new member of the genus Betacoronavirus, is a pandemic virus, which has caused numerous fatalities, particularly in the elderly and persons with underlying morbidities At present, there are no approved vaccines nor antiviral therapies available The detection and quantification of SARS-CoV-2-neutralizing antibodies plays a crucial role in the assessment of the immune status of convalescent COVID-19 patients, evaluation of recombinant therapeutic antibodies, and the evaluation of novel vaccines To detect SARS-CoV-2-neutralizing antibodies, classically, a virus-neutralization test has to be performed at biosafety level 3, considerably limiting the general use of this test In the present work, a biosafety level 1 pseudotype virus assay based on a propagation-incompetent vesicular stomatitis virus (VSV) has been used to determine the neutralizing antibody titers in convalescent COVID-19 patients The neutralization titers in serum of two independently analyzed patient cohorts were available within 18 h and correlated well with those obtained with a classical SARS-CoV-2 neutralization test (Pearson correlation coefficients of r = 0 929 and r = 0 939, respectively) Most convalescent COVID-19 patients had only low titers of neutralizing antibodies (ND50 <320) The sera of convalescent COVID-19 patients also neutralized pseudotype virus displaying the SARS-CoV-1 spike protein on their surface, which is homologous to the SARS-CoV-2 spike protein In summary, we report a robust virus-neutralization assay, which can be used at low biosafety level 1 to rapidly quantify SARS-CoV-2-neutralizing antibodies in convalescent COVID-19 patients and vaccinated individuals
    Keywords covid19
    Publisher WHO
    Document type Article
    Note WHO #Covidence: #653867
    Database COVID19

    Kategorien

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