Mass spectrometry is an extraordinarily powerful bioanalytical technique that has had a profound impact on our molecular understanding of human health and disease. Major advances in mass analyzer technology, dissociation techniques, and ionization methods are largely attributed to the central role that mass spectrometry plays in the field of systems biology. While mass spectrometry has evolved over the last century into a highly effective analytical tool, there are still opportunities for new advances to be made allowing an even more diverse array of biological questions to be addressed. This proposal is centered on the development of new ionization methods for biological mass spectrometry to allow for tissue imaging across several classes of biological molecules. The short-term objective of this proposal is to further develop and fundamentally understand this innovative ionization method using real biological systems. These results will provide a solid foundation from which biological applications will directly benefit. In this mindse, we will develop and apply these new ionization methods to tissue imaging. The long-term objective is to establish these new ionization methods as an enabling bioanalytical technology to effectively address questions in human health and disease. Mass spectrometry (MS), the science related to the weighing of molecules, has had a profound impact on the study of human health and disease including cancer, heart disease, neural development, and auto-immune diseases. A prerequisite of MS is to convert neutral molecules into charged species (ions) such that they can be weighed by the mass spectrometer. The focus of this research is to develop new ionization methods allowing a more diverse array of contemporary biomedical questions to be addressed. This will include the imaging of tissues to ultimately provide new biological insights.

Public Health Relevance

This proposal seeks support to continue to develop a novel ionization method and variants thereof for biological mass spectrometry that will transform tissue imaging (molecular microscopy). Furthermore, the tissue imaging data will be combined with other systems biology data on serial tissue sections providing new insights into important biological problems. In summary, we will establish a disruptive enabling bioanalytical technology through detailed characterization using model biological systems.

Agency
National Institute of Health (NIH)
Institute
National Institute of General Medical Sciences (NIGMS)
Type
Research Project (R01)
Project #
5R01GM087964-06
Application #
9252471
Study Section
Enabling Bioanalytical and Imaging Technologies Study Section (EBIT)
Program Officer
Sheeley, Douglas
Project Start
2009-07-01
Project End
2021-03-31
Budget Start
2017-04-01
Budget End
2018-03-31
Support Year
6
Fiscal Year
2017
Total Cost
$286,358
Indirect Cost
$71,019
Name
North Carolina State University Raleigh
Department
Chemistry
Type
Schools of Arts and Sciences
DUNS #
042092122
City
Raleigh
State
NC
Country
United States
Zip Code
27695
Ekelöf, Måns; Garrard, Kenneth P; Judd, Rika et al. (2018) Evaluation of Digital Image Recognition Methods for Mass Spectrometry Imaging Data Analysis. J Am Soc Mass Spectrom 29:2467-2470
Bokhart, Mark T; Nazari, Milad; Garrard, Kenneth P et al. (2018) MSiReader v1.0: Evolving Open-Source Mass Spectrometry Imaging Software for Targeted and Untargeted Analyses. J Am Soc Mass Spectrom 29:8-16
Ekelöf, Måns; Manni Sr, Jeffrey; Nazari, Milad et al. (2018) Characterization of a novel miniaturized burst-mode infrared laser system for IR-MALDESI mass spectrometry imaging. Anal Bioanal Chem 410:2395-2402
Nazari, Milad; Bokhart, Mark T; Loziuk, Philip L et al. (2018) Quantitative mass spectrometry imaging of glutathione in healthy and cancerous hen ovarian tissue sections by infrared matrix-assisted laser desorption electrospray ionization (IR-MALDESI). Analyst 143:654-661
Bagley, M Caleb; Ekelöf, Måns; Rock, Kylie et al. (2018) IR-MALDESI mass spectrometry imaging of underivatized neurotransmitters in brain tissue of rats exposed to tetrabromobisphenol A. Anal Bioanal Chem 410:7979-7986
Bokhart, Mark T; Manni, Jeffrey; Garrard, Kenneth P et al. (2017) IR-MALDESI Mass Spectrometry Imaging at 50 Micron Spatial Resolution. J Am Soc Mass Spectrom 28:2099-2107
Nazari, Milad; Ekelöf, Måns; Khodjaniyazova, Sitora et al. (2017) Direct screening of enzyme activity using infrared matrix-assisted laser desorption electrospray ionization. Rapid Commun Mass Spectrom 31:1868-1874
Nazari, Milad; Bokhart, Mark T; Muddiman, David C (2016) Whole-body Mass Spectrometry Imaging by Infrared Matrix-assisted Laser Desorption Electrospray Ionization (IR-MALDESI). J Vis Exp :e53942
Nazari, Milad; Muddiman, David C (2016) Enhanced Lipidome Coverage in Shotgun Analyses by using Gas-Phase Fractionation. J Am Soc Mass Spectrom 27:1735-1744
Bokhart, M T; Muddiman, D C (2016) Infrared matrix-assisted laser desorption electrospray ionization mass spectrometry imaging analysis of biospecimens. Analyst 141:5236-45

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