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Author ORCID Identifier
N/A
AccessType
Open Access Dissertation
Document Type
dissertation
Degree Name
Doctor of Philosophy (PhD)
Degree Program
Chemistry
Year Degree Awarded
2015
Month Degree Awarded
May
First Advisor
Igor A. Kaltashov
Subject Categories
Analytical Chemistry | Biotechnology
Abstract
Modern development of medicine requires detailed characterization by state-of-the art analytical techniques that can be used to analyze covalent structure, conformations and protein-receptor interaction to quantitatively measure biodistribution of protein therapeutics. Mass spectrometry has already become an indispensable tool facilitating all stages of protein drug development. Particularly, this work has demonstrated the tremendous potential of electrospray ionization (ESI) mass spectrometry (MS) in this arena by providing invaluable information beyond mass measurement that can be used to optimize protein drug conjugate structures during early stages of development, and to further catalyze drug design efforts. Additionally, a new sensitive and selective method that uses metal tracers and inductively coupled plasma (ICP) MS developed in our lab has been successfully applied for quantitating exogenous transferrin (Tf) and Tf-based drugs in biological tissues and fluids. Furthermore, ICP-MS based method using metal tracer in combination with size exclusion chromatography (SEC) method proved to be able to probe into protein stability post-injection and to yield useful data not accessible by other methods. For the first time a small soluble protein aggregation of injected protein drug was studied in live animals. Finally, a simple and cost-effective 18O labeling-based method has been developed for quantitating lysine modification sites of protein drug conjugates and has been successfully applied for N-succinimidyl-S-acetylthioacetate (SATA)-Lysozyme (Lz) conjugate.
DOI
https://doi.org/10.7275/6804693.0
Recommended Citation
Nguyen, Son N., "Transferrin-Based Therapeutics and Analytical Methods to Characterize Them" (2015). Doctoral Dissertations. 386.
https://doi.org/10.7275/6804693.0
https://scholarworks.umass.edu/dissertations_2/386