Concept
Glycomics
Publications associées (48)
Multistage Ion Mobility Spectrometry Combined with Infrared Spectroscopy for Glycan Analysis
Thomas Rizzo, Ahmed Ben Faleh, Stephan Warnke, Priyanka Bansal
The structural complexity of glycans makes their characterization challenging, not only because of the presence of various isomeric forms of the precursor molecule but also because the fragments can themselves be isomeric. We have recently developed an IMS ...
AMER CHEMICAL SOC2023Combining ion mobility spectrometry and cryogenic ion spectroscopy with enzymatic digestion/synthesis for the study of N-linked glycans
Glycans play an essential role in numerous physiological and pathological processes of living organisms. Despite their significant biological relevance, glycobiology remains one of the least explored fields of biochemistry. The intrinsic isomeric complexit ...
EPFL2023Using Hadamard Transform Multiplexed IR Spectroscopy Together with a Segmented Ion Trap for the Identification of Mobility-Selected Isomers
Thomas Rizzo, Ahmed Ben Faleh, Stephan Warnke, Ali H Abikhodr, Vasyl Yatsyna
The high isomericcomplexity of glycans makes them particularlydifficult to analyze. While ultra-high-resolution ion mobility spectrometry(IMS) can offer rapid baseline separation of many glycan isomers,their unambiguous identification remains a challenging ...
AMER CHEMICAL SOC2023Direct observation of glycans bonded to proteins and lipids at the single-molecule level
Klaus Kern, Stephan Rauschenbach
Proteins and lipids decorated with glycans are found throughout biological entities, playing roles in biological functions and dysfunctions. Current analytical strategies for these glycan-decorated biomolecules, termed glycoconjugates, rely on ensemble-ave ...
Washington2023Advancing Glycan Analysis: Cryogenic Ion Spectroscopy for Database-Driven Identification
Glycans play a pivotal role in both physiological processes; however, the field of glycobiology remains relatively understudied within biochemistry. The intricate complexity of glycans, coupled with their abundance of isomeric forms, presents formidable ch ...
EPFL2023New Approach for the Identification of Isobaric and Isomeric Metabolites
Thomas Rizzo, Ahmed Ben Faleh, Stephan Warnke, Ali H Abikhodr, Teun Van Wieringen
The structural elucidation of metabolite molecules is important in many branches of the life sciences. However, the isomeric and isobaric complexity of metabolites makes their identification extremely challenging, and analytical standards are often require ...
AMER CHEMICAL SOC2023Combining multi-stage ion mobility spectrometry with cryogenic infrared spectroscopy for glycan analysis
Structural analysis of biomolecules is essential to understanding biological processes. Among the various classes of biomolecules, glycans have gained significant attention recently due to their ubiquitous roles in biological systems. However, study of gly ...
EPFL2022Reduced ech-6 expression attenuates fat-induced lifespan shortening in C. elegans
Richardus Houtkooper, Wen Gao, Yuan Liu
Deregulated energy homeostasis represents a hallmark of aging and results from complex gene-by-environment interactions. Here, we discovered that reducing the expression of the gene ech-6 encoding enoyl-CoA hydratase remitted fat diet-induced deleterious e ...
NATURE PORTFOLIO2022Identification of Mobility-Resolved N-Glycan Isomers
Thomas Rizzo, Robert Paul Pellegrinelli, Ahmed Ben Faleh, Stephan Warnke, Priyanka Bansal
ABSTRACT: Glycan analysis has evolved considerably during the last decade. The advent of high-resolution ion-mobility spectrometry has enabled the separation of isomers with only the slightest of structural differences. However, the ability to separate suc ...
AMER CHEMICAL SOC2022A new approach for identifying positional isomers of glycans cleaved from monoclonal antibodies
Thomas Rizzo, Ahmed Ben Faleh, Stephan Warnke, Priyanka Bansal, Vasyl Yatsyna, Natalia Yalovenko
Glycosylation patterns in monoclonal antibodies (mAbs) can vary significantly between different host cell types, and these differences may affect mAbs safety, efficacy, and immunogenicity. Recent studies have demonstrated that glycan isomers with the termi ...
ROYAL SOC CHEMISTRY2021