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  • 1
    In: BJR|Open, British Institute of Radiology
    Kurzfassung: Magnetic resonance imaging (MRI) plays a significant role in the routine imaging workflow, providing both anatomical and functional information. 19F MRI is an evolving imaging modality where instead of 1H, 19F nuclei are excited. As the signal from endogenous 19F in the body is negligible, exogenous 19F signals obtained by 19F radiofrequency coils are exceptionally specific. Highly fluorinated agents targeting particular biological processes (i.e., the presence of immune cells) have been visualised using 19F MRI, highlighting its potential for non-invasive and longitudinal molecular imaging. This article aims to provide both a broad overview of the various applications of 19F MRI, with cancer imaging as a focus, as well as a practical guide to 19F imaging. We will discuss the essential elements of a 19F system and address common pitfalls during acquisition. Last but not least, we will highlight future perspectives that will enhance the role of this modality. While not an exhaustive exploration of all 19F literature, we endeavour to encapsulate the broad themes of the field and introduce the world of 19F molecular imaging to newcomers. 19F MRI bridges several domains, imaging, physics, chemistry, and biology, necessitating multidisciplinary teams to be able to harness this technology effectively. As further technical developments allow for greater sensitivity, we envision that 19F MRI can help unlock insight into biological processes non-invasively and longitudinally.
    Materialart: Online-Ressource
    ISSN: 2513-9878
    Sprache: Englisch
    Verlag: British Institute of Radiology
    Publikationsdatum: 2023
    ZDB Id: 3051447-2
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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  • 2
    In: Journal of Extracellular Vesicles, Wiley, Vol. 6, No. 1 ( 2017-12)
    Kurzfassung: Extracellular vesicles (EVs) secreted by prostate cancer (PCa) cells contain specific biomarkers and can be isolated from urine. Collection of urine is not invasive, and therefore urinary EVs represent a liquid biopsy for diagnostic and prognostic testing for PCa. In this study, we optimised urinary EV isolation using a method based on heat shock proteins and compared it to gold‐standard ultracentrifugation. The urinary EV isolation protocol using the Vn96‐peptide is easier, time convenient (≈1.5 h) and no special equipment is needed, in contrast to ultracentrifugation protocol ( 〉 3.5 h), making this protocol clinically feasible. We compared the isolated vesicles of both ultracentrifugation and Vn96‐peptide by proteome profiling using mass spectrometry‐based proteomics ( n  = 4 per method). We reached a depth of 〉 3000 proteins, with 2400 proteins that were commonly detected in urinary EVs from different donors. We show a large overlap ( 〉 85%) between proteins identified in EVs isolated by ultracentrifugation and Vn96‐peptide. Addition of the detergent NP40 to Vn96‐peptide EV isolations reduced levels of background proteins and highly increased the levels of the EV‐markers TSG101 and PDCD6IP, indicative of an increased EV yield. Thus, the Vn96‐peptide‐based EV isolation procedure is clinically feasibly and allows large‐scale protein profiling of urinary EV biomarkers.
    Materialart: Online-Ressource
    ISSN: 2001-3078 , 2001-3078
    Sprache: Englisch
    Verlag: Wiley
    Publikationsdatum: 2017
    ZDB Id: 2683797-3
    Bibliothek Standort Signatur Band/Heft/Jahr Verfügbarkeit
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