Publications de Kristina Srzentic

Multiplexed Middle-Down Mass Spectrometry as a Method for Revealing Light and Heavy Chain Connectivity in a Monoclonal Antibody

Yury Tsybin, Laure Menin, Luca Fornelli, Anton Kozhinov, Natalia Gasilova, Kristina Srzentic, Konstantin Nagornov, Daniel Ayoub

Pairing light and heavy chains in monoclonal antibodies (mAbs) using top-down (TD) or middle-down (MD) mass spectrometry (MS) may complement the sequence information on single chains provided by high-throughput genomic sequencing and bottom-up proteomics, ...

AMER CHEMICAL SOC2018

Monitoring Membrane Lipidome Turnover by Metabolic N-15 Labeling and Shotgun Ultra-High-Resolution Orbitrap Fourier Transform Mass Spectrometry

Yury Tsybin, Kristina Srzentic, Konstantin Nagornov

Lipidomes undergo permanent extensive remodeling, but how the turnover rate differs between lipid classes and molecular species is poorly understood. We employed metabolic N-15 labeling and shotgun ultra-high-resolution mass spectrometry (sUHR) to quantify ...

Amer Chemical Soc2017

Middle-down approaches for mass spectrometry-based protein identification and characterization

Kristina Srzentic

Mass spectrometry (MS) has emerged over the last two decades as the analytical technique of choice in systems-level protein studies, known as proteomics. Two are the MS-based approaches generally applied to proteomics: bottom-up (BU), which relies on the p ...

EPFL2016

On-chip mesoporous functionalized magnetic microspheres for protein sequencing by extended bottom-up mass spectrometry

Hubert Girault, Yury Tsybin, Liang Qiao, Natalia Gasilova, Kristina Srzentic

Limited amount and extreme concentration variability of proteomic-related samples require efficient analyte preconcentration and purification prior to the mass spectrometry (MS)-based analysis. Preferably, these steps should be coupled on-line with chosen ...

American Chemical Society2016

Extended Bottom-Up Proteomics with Secreted Aspartic Protease Sap9

Yury Tsybin, Unige Anna Laskay, Kristina Srzentic

We investigate the benefits and experimental feasibility of approaches enabling the shift from short (1.7 kDa on average) peptides in bottom-up proteomics to about twice longer (similar to 3.2 kDa on average) peptides in the so-called extended bottom-up pr ...

Elsevier Science Bv2014

Advantages of Extended Bottom-Up Proteomics Using Sap9 for Analysis of Monoclonal Antibodies

Yury Tsybin, Luca Fornelli, Unige Anna Laskay, Kristina Srzentic, Daniel Ayoub

Despite the recent advances in structural analysis of monoclonal antibodies with bottom-up, middle-down, and top-down mass spectrometry (MS), further improvements in analysis accuracy, depth, and speed are needed. The remaining challenges include quantitat ...

Amer Chemical Soc2014

Practical Considerations for Improving the Productivity of Mass Spectrometry-based Proteomics

Yury Tsybin, Luca Fornelli, Anton Kozhinov, Oxana Upir, Unige Anna Laskay, Kristina Srzentic

Mass spectrometry (MS) is currently the most sensitive and selective analytical technique for routine peptide and protein structure analysis. Top-down proteomics is based on tandem mass spectrometry (MS/MS) of intact proteins, where multiply charged precur ...

Schweizerische Chemische Gesellschaft2013

Proteome Digestion Specificity Analysis for Rational Design of Extended Bottom-up and Middle-down Proteomics Experiments

Yury Tsybin, Unige Anna Laskay, Kristina Srzentic

Mass spectrometry (MS)-based bottom-up proteomics (BUP) is currently the method of choice for large-scale identification and characterization of proteins present in complex samples, such as cell lysates, body fluids, or tissues. Technically, BUP relies on ...

Amer Chemical Soc2013