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Development of a platform for the production of multiple modal chelating and imaging agents using desferrioxamine and bovine albumin as a model

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Author(s):
Correia, Lucas Antonio Arias ; Garcia, Rodrigo Santos ; Real, Caroline Cristiano ; Uzueli, Daniel Henrique ; Sa, Ulisses Lacerda de Figueiredo ; Marques, Fabio Luiz Navarro ; Colnago, Luiz Alberto ; Esposito, Breno Pannia
Total Authors: 8
Document type: Journal article
Source: CHEMICAL PAPERS; v. 75, n. 3, p. 7-pg., 2020-09-30.
Abstract

The linker p-SCN-Bz-desferrioxamine was used as a conjugating agent to bovine serum albumin. The conjugate (BSA-DFO) did not display relevant structural alterations in comparison with the native protein. BSA-DFO was able to bind iron in a high affinity, antioxidant form similar to the native siderophore desferrioxamine. The gadolinium complex of BSA-DFO displayed 7-10 times higher relaxivities compared to the low molecular weight complex. Preparation of the radiotracers(68)Ga(BSA-DFO) and(89)Zr(BSA-DFO) in high radiochemical yields was accomplished quickly in mild conditions. These results indicate that BSA-DFO might be useful as an alternative treatment for iron overload disorders, and as a platform for the production of radiotracers or contrast agents for magnetic resonance imaging. (AU)

FAPESP's process: 16/03709-9 - Modulation of the levels and reactivity of physiological iron by mean of new natural or bifunctional chelators: possible applications in human health
Grantee:Breno Pannia Esposito
Support Opportunities: Regular Research Grants
FAPESP's process: 17/16379-0 - Desferriosamine: albumin conjugates for the therapy of iron overload
Grantee:Lucas Antonio Arias Correia
Support Opportunities: Scholarships in Brazil - Scientific Initiation