A. J. Greaney

Mosaic sarbecovirus nanoparticles elicit cross-reactive responses in pre-vaccinated animals

The paper shows mosaic-8b nanoparticles induce broader cross-reactive antibodies than homotypic ones, even in pre-vaccinated animals, suggesting potential for improved vaccine design against emerging sarbecoviruses.

Deep mutational scans for ACE2 binding, RBD expression, and antibody escape in the SARS-CoV-2 Omicron BA.1 and BA.2 receptor-binding domains

This study uses deep mutational scanning to analyze how mutations in the Omicron BA.1 and BA.2 RBDs affect ACE2 binding, RBD folding, and antibody escape, identifying epistatic shifts and lineage-specific changes.

The landscape of antibody binding affinity in SARS-CoV-2 Omicron BA.1 evolution

The paper maps how mutations in the SARS-CoV-2 Omicron BA.1 RBD affect antibody binding affinity through systematic analysis of 32,768 genotypes against four monoclonal antibodies.

Influenza virus transcription and progeny production are poorly correlated in single cells

This study measures both viral transcription and progeny production in single influenza-infected cells, finding they are poorly correlated.

Receptor binding domain (RBD) antibodies contribute more to SARS-CoV-2 neutralization when target cells express high levels of ACE2

This study shows that RBD antibodies contribute more to SARS-CoV-2 neutralization when target cells have high ACE2 expression, highlighting ACE2 levels as a critical experimental factor.

Molecular fate-mapping of serum antibodies reveals the effects of antigenic imprinting on repeated immunization

This study uses molecular fate-mapping to show that repeated immunization preferentially reuses initial B cell clones over recruiting new ones, with imprinting effects decreasing as antigenic distance increases.

Compensatory epistasis maintains ACE2 affinity in SARS-CoV-2 Omicron BA.1

This study identifies compensatory epistasis in SARS-CoV-2 Omicron BA.1 that maintains ACE2 affinity despite antibody-escape mutations.

Mosaic RBD nanoparticles protect against multiple sarbecovirus challenges in animal models

This study designs mosaic RBD nanoparticles to elicit antibodies against conserved sarbecovirus epitopes, showing broader protection against SARS-CoV-2 variants and animal sarbecoviruses in animal models.

The SARS-CoV-2 Delta variant induces an antibody response largely focused on class 1 and 2 antibody epitopes

The paper examines the antibody response to the SARS-CoV-2 Delta variant, showing it targets class 1 and 2 epitopes more than class 3, and that mutations in these regions reduce antibody binding.

Shifting mutational constraints in the SARS-CoV-2 receptor-binding domain during viral evolution

The paper analyzes epistatic shifts in SARS-CoV-2 RBD mutations across variants to understand how they influence ACE2 binding and future evolution.

Structural changes in the SARS-CoV-2 spike E406W mutant escaping a clinical monoclonal antibody cocktail

The paper examines structural changes in the SARS-CoV-2 spike E406W mutant that reduce neutralization by a monoclonal antibody cocktail and alters epitope recognition.

Selection analysis identifies unusual clustered mutational changes in Omicron lineage BA.1 that likely impact Spike function

The paper identifies 13 rare mutations in the Omicron S-gene that cluster in functionally important regions and likely impact Spike function, suggesting cooperative interactions that mitigate fitness costs.

An antibody-escape calculator for mutations to the SARS-CoV-2 receptor-binding domain

The paper develops an antibody-escape calculator to estimate the antigenic effects of mutations in the SARS-CoV-2 RBD, correlating with neutralization assays and highlighting Omicron's antigenic properties.

A SARS-CoV-2 variant elicits an antibody response with a shifted immunodominance hierarchy

This study compares antibody responses to early SARS-CoV-2 isolates and the B.1.351 variant, finding shifts in immunodominance hierarchy within the spike receptor-binding domain.

ACE2 binding is an ancestral and evolvable trait of sarbecoviruses

This study traces the evolutionary history of ACE2 binding in sarbecoviruses, finding it is an ancestral trait that has been lost in some clades and is highly evolvable through single amino-acid mutations.

Stabilization of the SARS-CoV-2 Spike receptor-binding domain using deep mutational scanning and structure-based design

This paper designs stabilized SARS-CoV-2 RBD variants using deep mutational scanning and structure-based design, showing improved thermal stability and manufacturability for vaccine applications.

The SARS-CoV-2 mRNA-1273 vaccine elicits more RBD-focused neutralization, but with broader antibody binding within the RBD

The paper compares the specificity of antibodies from the mRNA-1273 vaccine and natural infection, finding vaccine antibodies are more RBD-focused but have broader epitope coverage within the RBD.

Antibodies to the SARS-CoV-2 receptor-binding domain that maximize breadth and resistance to viral escape

This study identifies antibodies against SARS-CoV-2 that balance neutralization potency and breadth, with some showing high resistance to viral escape.

Mutational escape from the polyclonal antibody response to SARS-CoV-2 infection is largely shaped by a single class of antibodies

The paper maps mutations in SARS-CoV-2 spike RBD that escape binding by three antibody classes and finds that plasma escape maps closely resemble those of a single antibody class targeting site E484.

Complete map of SARS-CoV-2 RBD mutations that escape the monoclonal antibody LY-CoV555 and its cocktail with LY-CoV016

The paper maps SARS-CoV-2 RBD mutations that escape LY-CoV555 and its cocktail with LY-CoV016, identifying escape mutations in circulating variants and suggesting epitope diversification for improved antibody resilience.

Comprehensive mapping of mutations to the SARS-CoV-2 receptor-binding domain that affect recognition by polyclonal human serum antibodies

This study maps mutations in the SARS-CoV-2 RBD that affect recognition by polyclonal human serum antibodies, identifying key sites like E484 that significantly reduce neutralization.

Prospective mapping of viral mutations that escape antibodies used to treat COVID-19

The paper maps viral mutations in SARS-CoV-2 that escape two therapeutic antibodies, identifying escape mutations present in circulating strains.

Complete mapping of mutations to the SARS-CoV-2 spike receptor-binding domain that escape antibody recognition

This study maps mutations in the SARS-CoV-2 spike RBD that escape antibody recognition, revealing escape mutation patterns and enabling the design of antibody cocktails.

Attenuated influenza virions expressing the SARS- CoV-2 receptor-binding domain induce neutralizing antibodies in mice

This paper describes an influenza-based vaccine for SARS-CoV-2 that induces neutralizing antibodies in mice comparable to natural infection.

Deep mutational scanning of SARS-CoV-2 receptor binding domain reveals constraints on folding and ACE2 binding

The paper experimentally measures the effects of all amino-acid mutations in the SARS-CoV-2 RBD on protein folding and ACE2 binding, identifying constrained regions and tolerated mutations.