R. Gasser

Molecular basis for antiviral activity of pediatric neutralizing antibodies targeting SARS-CoV-2 Spike receptor binding domain

This study identifies two potent neutralizing antibodies, EH3 and EH8, from a pediatric patient that cross-neutralize SARS-CoV-2 variants and provide in vivo protection against the Delta VOC.

Small CD4 mimetics sensitize HIV-1-infected macrophages to antibody-dependent cellular cytotoxicity

The paper shows that small CD4 mimetics expose ADCC epitopes on HIV-1-infected macrophages, making them susceptible to antibody-dependent cellular cytotoxicity.

Temporal associations of B and T cell immunity with robust vaccine responsiveness in a 16-week interval BNT162b2 regimen

The paper examines B and T cell immunity responses to a 16-week interval BNT162b2 vaccine regimen, finding robust immune memory and functional associations between immune components.

Detection of the HIV-1 accessory proteins Nef and Vpu by flow cytometry represents a new tool to study their functional interplay within a single infected CD4+ T cell

The paper develops a flow cytometry method to detect HIV-1 Nef and Vpu in CD4+ T cells, showing Vpu cannot compensate for Nef absence in ADCC susceptibility.

An anti-SARS-CoV-2 non-neutralizing antibody with Fc-effector function defines a new NTD epitope and delays neuroinvasion and death in K18-hACE2 mice

Across functional boundaries: making non-neutralizing antibodies to neutralize HIV-1 and mediate Fc-mediated effector killing of infected cells

This paper designs Ab-CD4 chimeric proteins that open HIV-1 Env trimers to expose non-neutralizing epitopes, enabling both neutralization and ADCC against HIV-1.

Contribution of single mutations to selected SARS-CoV-2 emerging variants Spike antigenicity

The paper evaluates how single mutations in SARS-CoV-2 Spike protein affect antigenicity and ACE2 binding in emerging variants.

Structural Basis and Mode of Action for Two Broadly Neutralizing Antibodies Against SARS-CoV-2 Emerging Variants of Concern

This study characterizes two SARS-CoV-2 antibodies effective against variants, showing their structural basis and mechanisms of neutralization.

Impact of temperature on the affinity of SARS-CoV-2 Spike for ACE2

This study investigates how temperature affects SARS-CoV-2 Spike protein affinity for ACE2, finding increased binding at low temperatures, which is mitigated by the N501Y mutation.

Live imaging of SARS-CoV-2 infection in mice reveals neutralizing antibodies require Fc function for optimal efficacy

This study uses live imaging to show that neutralizing antibodies against SARS-CoV-2 need both Fab and Fc functions to effectively prevent and resolve infection in mice.

A single BNT162b2 mRNA dose elicits antibodies with Fc-mediated effector functions and boost pre-existing humoral and T cell responses

This study shows a single dose of the BNT162b2 mRNA vaccine elicits strong antibody and T cell responses, including Fc-mediated effector functions, and boosts pre-existing immunity in previously infected individuals.

Longitudinal analysis of humoral immunity against SARS-CoV-2 Spike in convalescent individuals up to 8 months post-symptom onset

This study tracks humoral immune responses in convalescent individuals up to 8 months post-SARS-CoV-2 infection, showing that IgG+ memory B cells persist while plasma antibody levels decline.

Major role of IgM in the neutralizing activity of convalescent plasma against SARS-CoV-2

This study shows that IgM plays a major role in neutralizing SARS-CoV-2 in convalescent plasma, with its depletion causing the greatest loss of neutralizing activity.

Real-time conformational dynamics of SARS-CoV-2 spikes on virus particles

This study uses smFRET to observe real-time conformational dynamics of SARS-CoV-2 spikes on virus particles, revealing multiple states and mechanisms of neutralization by antibodies and convalescent plasma.

Antibody binding to SARS-CoV-2 S glycoprotein correlates with, but does not predict neutralization

Interaction of human ACE2 to membrane-bound SARS-CoV-1 and SARS-CoV-2 S glycoproteins

This study compares the cooperativity of ACE2 binding to SARS-CoV-1 and SARS-CoV-2 Spike proteins, finding that SARS-CoV-2 exhibits positive cooperativity.

Cross-sectional evaluation of humoral responses against SARS-CoV-2 Spike

This study evaluates humoral responses against SARS-CoV-2 Spike in 106 infected individuals, finding persistent RBD-specific IgG and declining neutralizing activity over time.