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Our immune system protects us from pathogens and various diseases, and the immune response is dependent on a person’s repertoire of immune cells, antibodies and circulating plasma proteins. A detailed characterization of these plasma components is important for the understanding of how they affect each individual’s immune response.
In this paper, scientists at Spectroswiss and Orion Pharma present a novel strategy for DAR analysis of structurally complex antibody-oligonucleotide conjugates using SmartEnzymes™ and a proteoform integration approach combined with native SEC-Orbitrap FTMS.
Scientists at University of Geneva and Centre d’Immunologie Pierre-Fabre here describes a comprehensive intact and middle-level characterization of a commercial bispecific antibody by using a variety of orthogonal chromatographic methods coupled to MS.
Bottom-up mass spectrometry where the intact protein is digested into smaller peptides is an indispensable tool for proteomics and the studying of histone codes. Since histones are enriched with the basic amino acids arginine and lysine, enzymatic digestion is often challenging as peptides too short for LC retention and PTM localization are generated. In addition,…
Genovis launches new glycoforms with TransGLYCIT™ - A platform to create IgG with defined glycan profiles! TransGLYCIT enables specific IgG N-glycan remodeling and prepares antibodies with a defined and homogenous G0, G1, G2 or G2S2 glycoform using fast and robust enzymatic workflows. With the optional FucosEXO™ 16 enzyme, afucosylated antibodies can be obtained that enable…
The importance of monoclonal antibodies (mAbs) as therapeutic agents is steadily increasing, and each year nearly 300 novel mAbs are being evaluated for their therapeutic effectivity. Interest has also been expressed in the use of antibody fragments as therapeutic agents. The physiochemical properties of the fragments differ significantly from that of intact antibodies, and the…
Scientists at the University of Strasbourg and University of Geneva use innovative native MS and IM methodologies for analytical characterization of a site-specific ADC generated with the GlyCLICK technology. Antibody-drug conjugates (ADCs) combine the benefits of tumor-targeting monoclonal antibodies with the cytotoxic effect of drug payloads covalently linked to the antibody. The ADC generation…
With their molecular specificity for biological targets, monoclonal antibodies (mAbs) have revolutionized the field of research and medicine. Due to numerous post-translational modifications causing heterogeneity in the structure of mAbs, a comprehensive characterization of the physiochemical properties is necessary to ensure the quality, efficacy and safety of mAb-based therapeutic drugs.
The development and successful commercialization of gene therapy technologies as new treatments have spurred great interest and investments in this field of research. Many challenges remain to be solved to establish gene therapy as a mainstream line of treatment, but there are currently many promising and life-changing gene therapy programs in preclinical and clinical development.…
The first steps of infection with SARS-CoV-2 is binding of a viral Spike protein to a host receptor angiotensin-converting enzyme 2 (ACE2), followed by fusion of viral and host membranes. Antibodies that block this interaction are emerging as early COVID-19 therapies, however, the neutralization potencies of the antibodies are less studied.
A Rapid LC-MS Assay for Monitoring of mAb Oxidation at the Subunit Level Methionine oxidation is considered a critical quality attribute of therapeutic antibodies and may impact the clinical safety and efficacy. Therefore, monitoring of methionine oxidations is required during the discovery, development, and production of therapeutic antibodies. Traditional methods to characterize oxidation rely…
We are happy to announce two new affinity purified antibody formats for detecting the FabRICATOR enzyme! The Anti-FabRICATOR Affinity Purified is an affinity purified goat polyclonal antibody and the Anti-FabRICATOR Affinity Purified Biotin Conjugated is an affinity purified and biotin-conjugated goat polyclonal antibody.
