Immunology of Infectious Disease News Volume 10.05 | Feb 9 2022

    0
    159







    2022-02-09 | IIDN 10.04


    Immunology of Infectious Disease News by STEMCELL Technologies
    Vol. 10.04 – 9 February, 2022
    TOP STORY

    Structures of the Omicron Spike Trimer with ACE2 and an Anti-Omicron Antibody

    An unusual receptor binding domain (RBD)-RBD interaction in the ACE2-spike complex supported the open conformation and further reinforced ACE2 binding to the spike trimer.
    [Science]

    Full Article
    Who does immunology research in the Bolivian Andes? He does. Read Jason Young's story.
    PUBLICATIONSRanked by the impact factor of the journal

    A Human Antibody Reveals a Conserved Site on Beta-Coronavirus Spike Proteins and Confers Protection against SARS-CoV-2 Infection

    The authors described a broadly neutralizing antibody, CC40.8, from COVID-19-convalescent donor that exhibited broad reactivity with human beta-coronaviruses.
    [Science Translational Medicine]

    Full Article

    An Ultrapotent RBD-Targeted Biparatopic Nanobody Neutralizes Broad SARS-CoV-2 Variants

    Using pseudovirion-based and trans-complementation SARS-CoV-2 tools, scientists determined that nanobody (Nb)1–Nb2 broadly neutralized multiple SARS-CoV-2 variants at sub-nanomolar levels, including Alpha, Beta, Gamma, Delta, Lambda, Kappa, and Mu.
    [Signal Transduction and Targeted Therapy]

    Full Article

    Divergent SARS CoV-2 Omicron-Reactive T- and B Cell Responses in COVID-19 Vaccine Recipients

    Researchers studied neutralizing antibodies and T-cell responses targeting SARS-CoV-2 D614G , and the Beta, Delta, and Omicron variants of concern in a cohort of 60 health care workers after immunization with ChAdOx-1 S, Ad26.COV2.S, mRNA-1273 or BNT162b2.
    [Science Immunology]

    Full Article

    Differential Interferon-α Subtype Induced Immune Signatures Are Associated with Suppression of SARS-CoV-2 Infection

    Investigators comprehensively analyzed the antiviral activity of all interferon-α subtypes against SARS-CoV-2 to identify the underlying immune signatures and explore their therapeutic potential.
    [Proceedings of the National Academy of Sciences of the United States of America]

    Full Article

    Coinfection of SARS-CoV-2 and Influenza a Virus Increased Disease Severity, Impaired Neutralizing Antibody, and CD4+ T Cell Responses

    Scientists reported the pathogenic and immunological consequences of SARS-CoV-2 and influenza A virus H1N1 coinfection in the K18-hACE2 transgenic mouse model.
    [Journal of Virology]

    AbstractFull Article

    Attenuation of SARS-CoV-2 Infection by Losartan in Human Kidney Organoids

    Using induced pluripotent stem cell derived kidney organoids, SARS-CoV-1, SARS-CoV-2 and MERS-CoV tropism, defined by the paired expression of a host receptor and protease, was identified primarily amongst proximal tubule cells.
    [iScience]

    AbstractFull ArticleGraphical Abstract

    Induction of Tier-2 Neutralizing Antibodies in Mice with a DNA-Encoded HIV Envelope Native Like Trimer

    The authors showed that DNA-encoded native-like trimer fold properly in vivo and induced autologous tier-2 neutralizing antibodies in mice.
    [Nature Communications]

    Full ArticlePress Release

    The HIV-1 Proviral Landscape Reveals Nef Contributes to HIV-1 Persistence in Effector Memory CD4+ T-cells

    Investigators observed that the HIV-1 proviral landscape was different and changed with time on antiretroviral therapy across naïve and memory CD4+ T cell subsets isolated from 24 participants.
    [Journal of Clinical Investigation]

    AbstractFull Article

    A Bacterial Endosymbiont of the Fungus Rhizopus microsporus Drives Phagocyte Evasion and Opportunistic Virulence

    Scientists showed that a clinical isolate of Rhizopus microsporus contained a Ralstonia pickettii bacterial endosymbiont required for virulence in both zebrafish and mice and that this endosymbiosis enabled the secretion of factors that potently suppressed growth of the soil amoeba Dictyostelium discoideum.
    [Current Biology]

    Full ArticlePress Release

    Targeting TLR9 Agonists to Secondary Lymphoid Organs Induces Potent Immune Responses against HBV Infection

    The authors developed a lymphoid organ-targeting immunomodulator by conjugating a naturally occurring, lipophilic molecule, α-tocopherol, to a potent CpG oligonucleotide adjuvant pharmacophore.
    [Molecular Therapy-Nucleic Acids]

    AbstractFull ArticleGraphical Abstract

    CAR/CXCR5-T Cell Immunotherapy Is Safe and Potentially Efficacious in Promoting Sustained Remission of SIV Infection

    Researchers investigated whether infusion of T cells expressing an simian immunodeficiency virus-specific chimeric antigen receptor and the follicular homing receptor, CXCR5, could successfully kill viral-RNA+ cells in targeted lymphoid follicles in SIV-infected rhesus macaques.
    [PLoS Pathogens]

    Full Article

    Recombinant Lloviu Virus as a Tool to Study Viral Replication and Host Responses

    Similar to other filoviruses, recombinant Lloviu virus formed filamentous virions and induced the formation of characteristic inclusions in the cytoplasm of the infected cells, as shown by electron microscopy.
    [PLoS Pathogens]

    Full Article

    Cytopathological Analysis of Bronchoalveolar Lavage Fluid in Patients with and without HIV Infection

    Investigators analyzed the cytopathologic characteristics of bronchoalveolar lavage fluid in the diagnosis of HIV/AIDS-related lung disease and compared the lung disease spectrum between HIV and HIV-uninfected patients.
    [BMC Pulmonary Medicine]

    Full Article
    Studying COVID-19 with ALI culture
    REVIEWS

    The Tangled Web of Autoreactive B Cells in Malaria Immunity and Autoimmune Disease

    Understanding that antibodies play central roles in malaria immunity and systemic lupus erythematosus, the authors discuss how autoreactive B cells contribute to malaria immunity but promote systemic lupus erythematosus pathology in the absence of malaria.
    [Trends in Parasitology]

    Abstract

    Immune Checkpoint Blockade in HIV

    Scientists review recent evidence on the role of immune checkpoints in persistent HIV infection and discuss the potential for employing immune checkpoint blockade as a therapeutic approach to target HIV persistence on antiretroviral therapy.
    [Ebiomedicine]

    Full Article
    INDUSTRY AND POLICY NEWS

    Appili Therapeutics Expands ATI-1501 Commercial Agreement with Partner Saptalis Pharmaceuticals

    Appili Therapeutics, Inc. announced it has amended its agreement with Saptalis Pharmaceuticals LLC to expand the territories in which Saptalis will commercialize ATI-1501, Appili’s liquid oral reformulation of the antibiotic metronidazole.
    [Appili Therapeutics, Inc.]

    Press Release

    Celltrion Submits Investigational New Drug (IND) Application to Initiate a Global Phase III Clinical Trial Evaluating an Inhaled COVID-19 Antibody Cocktail Therapy

    Celltrion Group announced it has submitted an IND application to conduct a global Phase III clinical trial evaluating the efficacy and safety of an inhaled COVID-19 antibody cocktail therapy for patients with mild-to-moderate symptoms of COVID-19.
    [Celltrion Group]

    Press Release
    FEATURED EVENT

    ISCT ANZ – BAA Joint Scientific Meeting

    February 24 – February 25, 2022
    Virtual

    > See All Events

    JOB OPPORTUNITIES

    Research Scientist – T Cell Stimulation

    Babraham Institute – Babraham, England, United Kingdom

    Postdoctoral Researcher – Immunology

    Osaka University – Osaka, Japan

    Excellence Research Chair – Vaccine Development

    Dalhousie University Faculty of Medicine – Halifax, Nova Scotia, Canada

    Research Fellow – Universal Influenza Vaccines

    Dana-Farber Cancer Institute – Boston, Massachusetts, United States

    Research Associate – Vaccine Designs

    Scripps Research Institute – La Jolla, California, United States

    > See All Jobs

    Submit an article, publication, job or event
    Brought to you by
    stemcell-logo-for newsletter-2
    Immunology of Infectious Disease News Twitter