Does the ATSM-Cu(II) Biomarker Integrate into the Human Cellular Copper Cycle?
Journal
ACS omega
ISSN: 2470-1343
Titre abrégé: ACS Omega
Pays: United States
ID NLM: 101691658
Informations de publication
Date de publication:
31 Jul 2019
31 Jul 2019
Historique:
received:
13
06
2019
accepted:
04
07
2019
entrez:
29
8
2019
pubmed:
29
8
2019
medline:
29
8
2019
Statut:
epublish
Résumé
Hypoxia is commonly encountered in the tumor microenvironment and drives proliferation, angiogenesis, and resistance to therapy. Imaging of hypoxia is important in many disease states in oncology, cardiology, and neurology. Finding clinically approved imaging biomarkers for hypoxia has proved challenging. Candidate biomarkers have shown low uptake into tumors and low signal to background ratios that adversely affect imaging quality. Copper complexes have been identified as potential biomarkers for hypoxia owing to their redox ability. Active uptake of copper complexes into cells could ensure selectivity and high sensitivity. We explored the reactivity and selectivity of the ATSM-Cu(II) biomarker to proteins that are involved in the copper cycle using electron paramagnetic resonance (EPR) spectroscopy and UV-vis measurements. We show that the affinity of the ATSM-Cu(II) complex to proteins in the copper cycle is low and the cell probably does not actively uptake ATSM-Cu(II).
Identifiants
pubmed: 31460344
doi: 10.1021/acsomega.9b01748
pmc: PMC6681976
doi:
Types de publication
Journal Article
Langues
eng
Pagination
12278-12285Déclaration de conflit d'intérêts
The authors declare no competing financial interest.
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