Immunology of Infectious Disease News Volume 9.24 | Jun 30 2021

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    2021-06-30 | IIDN 9.24


    Immunology of Infectious Disease News by STEMCELL Technologies
    Vol. 9.24 – 30 June, 2021
    TOP STORY

    The Single-Cell Epigenomic and Transcriptional Landscape of Immunity to Influenza Vaccination

    Single-cell ATAC-seq analysis revealed an epigenomically distinct subcluster of monocytes with reduced chromatin accessibility at AP-1-targeted loci after vaccination.
    [Cell]

    AbstractGraphical AbstractPress Release
    Start Fast. Finish Faster. Streamline your assays with purified human primary cells from STEMCELL Technologies. View products now.
    PUBLICATIONSRanked by the impact factor of the journal

    Primary, Recall, and Decay Kinetics of SARS-CoV-2 Vaccine Antibody Responses

    SARS-CoV-2-naı̈ve individuals achieved levels similar to mild natural infection after the first vaccination; a second dose generated levels approaching severe natural infection.
    [ACS Nano]

    AbstractGraphical Abstract

    Follow-Up of COVID-19 Recovered Patients with Mild Disease

    With the rising burden of the pandemic, it is vital to identify not only active disease but any post-recovery complications as well. This study was conducted with the aim of identifying the presence of post-viral symptomatology in patients recovered from mild COVID-19 disease.
    [Signal Transduction and Targeted Therapy]

    Full Article

    SARS-CoV-2-Mediated Dysregulation of Metabolism and Autophagy Uncovers Host-Targeting Antivirals

    SARS-CoV-2-infected cells showed accumulation of key metabolites, activation of autophagy inhibitors and reduction of proteins responsible for autophagy initiation, membrane nucleation, and phagophore formation, as well as autophagosome-lysosome fusion.
    [Nature Communications]

    Full ArticlePress Release

    Sequence Signatures of Two Public Antibody Clonotypes That Bind SARS-CoV-2 Receptor Binding Domain

    Researchers identified two public clonotypes of IGHV3-53/3-66 receptor binding domain antibodies with a 9-residue complementarity-determining region H3 that paired with different light chains.
    [Nature Communications]

    Full Article

    Engineered ACE2 Receptor Therapy Overcomes Mutational Escape of SARS-CoV-2

    The authors described an engineered human virus receptor, ACE2, by mutagenesis and screening for binding to the receptor binding domain.
    [Nature Communications]

    Full Article

    CVnCoV and CV2CoV Protect Human ACE2 Transgenic Mice from Ancestral B BavPat1 and Emerging B.1.351 SARS-CoV-2

    The efficacy of spike encoding mRNA vaccines against the ancestral strain and the VOC B.1.351 was tested in a K18-hACE2 transgenic mouse model. Naive mice and mice immunized with a formalin-inactivated SARS-CoV-2 preparation were used as controls.
    [Nature Communications]

    Full Article

    TMPRSS2 Expression Dictates the Entry Route Used by SARS-CoV-2 to Infect Host Cells

    Investigating SARS-CoV-2 infection in tissue culture, researchers found that the protease TMPRSS2 determined the entry pathway used by the virus.
    [EMBO Journal]

    AbstractFull Article

    Mn2+ Coordinates Cap-0-RNA to Align Substrates for Efficient 2′-O-Methyl Transfer by SARS-CoV-2 nsp16

    Scientists determined the x-ray structures of the SARS-CoV-2 2′-O-methyltransferase in complex with its reaction substrates, products, and divalent metal cations.
    [Science Signaling]

    Full Article

    Limited Intestinal Inflammation despite Diarrhea, Fecal Viral RNA and SARS-CoV-2-Specific IgA in Patients with Acute COVID-19

    In lieu of tissue samples, the authors measured cytokines, inflammatory markers, viral RNA, microbiome composition, and antibody responses in stool samples from a cohort of 44 hospitalized COVID-19 patients.
    [Scientific Reports]

    Full Article

    Inherited PD-1 Deficiency Underlies Tuberculosis and Autoimmunity in a Child

    Investigators studied a patient with inherited PD-1 deficiency and tuberculosis who died of pulmonary autoimmunity. The patient’s leukocytes did not express PD-1 or respond to PD-1-mediated suppression.
    [Nature Medicine]

    Abstract

    The Cellular Architecture of the Antimicrobial Response Network in Human Leprosy Granulomas

    Scientists investigated the single-cell phenotypes associated with antimicrobial responses in human leprosy granulomas by applying single-cell and spatial sequencing to leprosy biopsy specimens.
    [Nature Immunology]

    Abstract

    Influenza Virus Infection Expands the Breadth of Antibody Responses through IL-4 Signaling in B Cells

    Researchers showed that nasal infection controls two sequential processes to induce neutralizing IgG antibodies recognizing the hemagglutinin of heterotypic strains.
    [Nature Communications]

    Full Article

    Single-Cell BCR and Transcriptome Analysis after Influenza Infection Reveals Spatiotemporal Dynamics of Antigen-Specific B Cells

    By combining single-cell RNA and B cell receptor sequencing of antigen-specific cells in lymph nodes, spleen, and lungs after influenza infection in mice, the authors identified several germinal center B cell subpopulations and organ-specific differences that persisted over the course of the response.
    [Cell Reports]

    Full ArticleGraphical Abstract

    SCD2-Mediated Monounsaturated Fatty Acid Metabolism Regulates cGAS-STING-Dependent Type I IFN Responses in CD4+ T Cells

    Scientists showed that viral infection attenuated the expression of genes related to lipid metabolism in murine CD4+ T cells, which in turn increased the expression of antiviral genes.
    [Communications Biology]

    Full Article

    PGE2 Displays Immunosuppressive Effects during Human Active Tuberculosis

    Researchers demonstrated that prostaglandin E2 (PGE2) exerted a potent immunosuppressive action during the immune response of the human host against Mycobacterium tuberculosis infection.
    [Scientific Reports]

    Full Article
    Explore Antibodies for Immunology Research
    REVIEWS

    HIV-1 and Human Genetic Variation

    HIV host genomic research, which aims to understand how human genetic variation affects our response to HIV infection, has progressed from early candidate gene studies to recent multi-omic efforts, benefiting from spectacular advances in sequencing technology and data science.
    [Nature Reviews Genetics]

    Full Article
    INDUSTRY AND POLICY NEWS

    Tiziana Enters a Collaboration Agreement with FHI Clinical to Conduct a Phase II Clinical Trial for Treating Hospitalized Severe COVID-19 Patients with Intranasal Foralumab, a Fully Human Anti-CD3 Monoclonal Antibody

    Tiziana Life Sciences plc announced that it has signed an agreement with FHI Clinical, a global clinical contract research organization, to conduct a Phase II Proof-of-concept study in Brazil to evaluate the safety, tolerability and efficacy of intranasal Foralumab in hospitalized patients with COVID-19 and pulmonary inflammation.
    [Tiziana Life Sciences plc]

    Press Release

    Venatorx Pharmaceuticals Announces First Patient Dosed in Phase I Study of VNRX-9945 for the Treatment of Chronic Hepatitis B Virus Infection

    Venatorx Pharmaceuticals announced that the first patient was dosed in a Phase I clinical trial evaluating VNRX-9945, a highly potent, broadly active viral replication inhibitor for the treatment of chronic hepatitis B virus infection.
    [Venatorx Pharmaceuticals]

    Press Release

    Moderna Announces Emergency Use Authorization for its COVID-19 Vaccine Granted by Government of India

    Moderna, Inc. announced that the government of India has issued a registration certificate and a permission to import the COVID-19 Vaccine Moderna for restricted use in an emergency situation.
    [Moderna, Inc.]

    Press Release
    FEATURED EVENT

    6th European Congress of Immunology

    September 1 – 4, 2021
    Virtual

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    JOB OPPORTUNITIES

    Postdoctoral Fellow – Vascular Dysfunction in SARS-CoV-2

    The European Molecular Biology Laboratory – Barcelona, Spain

    Senior Research Scientist/Principal Scientist – Immunology

    Hummingbird Bioscience – Singapore, Singapore

    Postdoctoral Fellow – B Cell Immunology

    University of Gothenburg – Gothenburg, Sweden

    Postdoctoral Fellow – Immunology or Bacteriology

    Brigham and Women’s Hospital – Boston, Massachusetts, United States

    Assistant Professor – The Center for Global Infectious Disease Research

    University of Washington – Seattle, Washington, United States

    > See All Jobs

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