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Efficient Parahydrogen-Induced 13 C Hyperpolarization on a Microfluidic Device

Barker, Sylwia J. 1; Dagys, Laurynas; Levitt, Malcolm H.; Utz, Marcel 1
1 Institut für Mikrostrukturtechnik (IMT), Karlsruher Institut für Technologie (KIT)

Abstract:

We show the direct production and detection of 13C-hyperpolarized fumarate by parahydrogen-induced polarization (PHIP) in a microfluidic lab-on-a-chip (LoC) device and achieve 8.5% 13C polarization. This is the first demonstration of 13C-hyperpolarization of a metabolite by PHIP in a microfluidic device. LoC technology allows the culture of mammalian cells in a highly controlled environment, providing an important tool for the life sciences. In-situ preparation of hyperpolarized metabolites greatly enhances the ability to quantify metabolic processes in such systems by microfluidic NMR. PHIP of 1H nuclei has been successfully implemented in microfluidic systems, with mass sensitivities in the range of pmol/s. However, metabolic NMR requires high-yield production of hyperpolarized metabolites with longer spin life times than is possible with 1H. This can be achieved by transfer of the polarization onto 13C nuclei, which exhibit much longer T1 relaxation times. We report an improved microfluidic PHIP device, optimized using a finite element model, that enables the direct and efficient production of 13C-hyperpolarized fumarate.

Zugehörige Institution(en) am KIT Institut für Mikrostrukturtechnik (IMT)
Publikationstyp Zeitschriftenaufsatz
Publikationsdatum 10.07.2024
Sprache Englisch
Identifikator ISSN: 0002-7863, 1520-5126, 1943-2984
KITopen-ID: 1000172635
HGF-Programm 43.35.01 (POF IV, LK 01) Platform for Correlative, In Situ & Operando Charakterizat.
Erschienen in Journal of the American Chemical Society
Verlag American Chemical Society (ACS)
Band 146
Heft 27
Seiten 18379–18386
Vorab online veröffentlicht am 25.06.2024
Nachgewiesen in Web of Science
Scopus
OpenAlex
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Verlagsausgabe §
DOI: 10.5445/IR/1000172635
Veröffentlicht am 19.07.2024
Originalveröffentlichung
DOI: 10.1021/jacs.4c03271
Scopus
Zitationen: 2
Web of Science
Zitationen: 2
Dimensions
Zitationen: 2
Seitenaufrufe: 39
seit 19.07.2024
Downloads: 18
seit 21.07.2024
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