Recent advances in structural mass spectrometry methods in the context of biosimilarity assessment: from sequence heterogeneities to higher order structures

J Castel, S Delaux, O Hernandez-Alba… - … of Pharmaceutical and …, 2023 - Elsevier
Biotherapeutics and their biosimilar versions have been flourishing in the biopharmaceutical
market for several years. Structural and functional characterization is needed to achieve …

Charge Detection Mass Spectrometry Reveals Conformational Heterogeneity in Megadalton-Sized Monoclonal Antibody Aggregates

JS Jordan, CC Harper, F Zhang, E Kofman… - Journal of the …, 2024 - ACS Publications
Aggregation of protein-based therapeutics can occur during development, production, or
storage and can lead to loss of efficacy and potential toxicity. Native mass spectrometry of a …

Fluorinated Ethylamines as Electrospray-Compatible Neutral pH Buffers for Native Mass Spectrometry

BTV Davis, A Velyvis, S Vahidi - Analytical Chemistry, 2023 - ACS Publications
Native electrospray ionization mass spectrometry (ESI-MS) has emerged as a potent tool for
examining the native-like structures of macromolecular complexes. Despite its utility, the …

Recent advances in gas phase unfolding: Instrumentation and applications

R Matney, VV Gadkari - Journal of Mass Spectrometry, 2024 - Wiley Online Library
Broader adoption of native mass spectrometry (MS) and ion mobility‐mass spectrometry (IM‐
MS) has propelled the development of several techniques which take advantage of the …

Ion Mobility-Mass Spectrometry and Collision-Induced Unfolding Rapidly Characterize the Structural Polydispersity and Stability of an Fc-Fusion Protein

RC Villafuerte-Vega, HW Li, AE Bergman… - Analytical …, 2024 - ACS Publications
Fc-fusion proteins are an emerging class of protein therapeutics that combine the properties
of biological ligands with the unique properties of the fragment crystallizable (Fc) domain of …

Accessing Different Protein Conformer Ensembles with Tunable Capillary Vibrating Sharp-Edge Spray Ionization

D Sharif, VK Dewasurendra, MN Sultana… - The Journal of …, 2025 - ACS Publications
Capillary vibrating sharp-edge spray ionization (cVSSI) has been used to control the droplet
charging of nebulized microdroplets and monitor effects on protein ion conformation makeup …

Native ion mobility‐mass spectrometry reveals the binding mechanisms of anti‐amyloid therapeutic antibodies

Y Han, AA Desai, JM Zupancic, MD Smith… - Protein …, 2024 - Wiley Online Library
One of the most important attributes of anti‐amyloid antibodies is their selective binding to
oligomeric and amyloid aggregates. However, current methods of examining the binding …

Protein-Centric Analysis of Personalized Antibody Repertoires Using LC-MS-Based Fab-Profiling on a timsTOF

J Fiala, D Schuster, S Ollivier, S Pengelley… - Journal of the …, 2024 - ACS Publications
Endogenous antibodies, or immunoglobulins (Igs), abundantly present in body fluids,
represent some of the most challenging samples to analyze, largely due to the immense …

[HTML][HTML] Mapping conformational changes on bispecific antigen-binding biotherapeutic by covalent labeling and mass spectrometry

A Shah, D Batabyal, D Qiu, W Cui, J Harrahy… - Journal of …, 2024 - Elsevier
Biotherapeutic's higher order structure (HOS) is a critical determinant of its functional
properties and conformational relevance. Here, we evaluated two covalent labeling …

Perspective: The complex relationship between charge, mobility, and gas‐phase protein structure

IK Webb - Journal of Mass Spectrometry, 2024 - Wiley Online Library
Ion mobility spectrometry coupled to mass spectrometry (IMS/MS) is a widely used tool for
biomolecular separations and structural elucidation. The application of IMS/MS has resulted …