[HTML][HTML] Multivalency transforms SARS-CoV-2 antibodies into ultrapotent neutralizers

…, P Budylowski, F Guvenc, JC Newton, T Sicard… - Nature …, 2021 - nature.com
SARS-CoV-2, the virus responsible for COVID-19, has caused a global pandemic.
Antibodies can be powerful biotherapeutics to fight viral infections. Here, we use the human …

[HTML][HTML] Molecular basis of human CD22 function and therapeutic targeting

J Ereño-Orbea, T Sicard, H Cui… - Nature …, 2017 - nature.com
CD22 maintains a baseline level of B-cell inhibition to keep humoral immunity in check. As
a B-cell-restricted antigen, CD22 is targeted in therapies against dysregulated B cells that …

Structural basis of enhanced crystallizability induced by a molecular chaperone for antibody antigen-binding fragments

J Ereño-Orbea, T Sicard, H Cui, J Carson… - Journal of molecular …, 2018 - Elsevier
Monoclonal antibodies constitute one of the largest groups of drugs to treat cancers and
immune disorders, and are guiding the design of vaccines against infectious diseases. …

[HTML][HTML] Molecular recognition of the native HIV-1 MPER revealed by STED microscopy of single virions

…, E Largo, D Waithe, B Apellaniz, T Sicard… - Nature …, 2019 - nature.com
Antibodies against the Membrane-Proximal External Region (MPER) of the Env gp41 subunit
neutralize HIV-1 with exceptional breadth and potency. Due to the lack of knowledge on …

Multivalency transforms SARS-CoV-2 antibodies into broad and ultrapotent neutralizers

…, P Budylowski, F Guvenc, JC Newton, T Sicard… - BioRxiv, 2020 - biorxiv.org
The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes
Coronavirus Disease 2019 (COVID-19), has caused a global pandemic. Antibodies are …

[HTML][HTML] B cell targeting by molecular adjuvants for enhanced immunogenicity

T Sicard, A Kassardjian, JP Julien - Expert Review of Vaccines, 2020 - Taylor & Francis
Introduction Adjuvants are critical components of vaccines to improve the quality and durability
of immune responses. Molecular adjuvants are a specific subclass of adjuvants where …

[HTML][HTML] Structural characterization of the ICOS/ICOS-L immune complex reveals high molecular mimicry by therapeutic antibodies

E Rujas, H Cui, T Sicard, A Semesi, JP Julien - Nature Communications, 2020 - nature.com
The inducible co-stimulator (ICOS) is a member of the CD28/B7 superfamily, and delivers a
positive co-stimulatory signal to activated T cells upon binding to its ligand (ICOS-L). …

[HTML][HTML] N-linked glycosylation regulates CD22 organization and function

L Wasim, FHM Buhari, M Yoganathan, T Sicard… - Frontiers in …, 2019 - frontiersin.org
The organization and clustering of cell surface proteins plays a critical role in controlling
receptor signaling; however, the biophysical mechanisms regulating these parameters are not …

[HTML][HTML] Structural details of monoclonal antibody m971 recognition of the membrane-proximal domain of CD22

J Ereño-Orbea, X Liu, T Sicard, I Kucharska… - Journal of Biological …, 2021 - ASBMB
Cluster of differentiation-22 (CD22) belongs to the sialic acid–binding immunoglobulin (Ig)-like
lectin family of receptors that is expressed on the surface of B cells. It has been classified …

Characterization of glycoproteins with the immunoglobulin fold by X-ray crystallography and biophysical techniques

J Ereño-Orbea, T Sicard, H Cui, I Akula… - JoVE (Journal of …, 2018 - jove.com
Glycoproteins on the surface of cells play critical roles in cellular function, including
signalling, adhesion and transport. On leukocytes, several of these glycoproteins possess …