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Shamsutdinova N, Zairov R, Nizameev I, Gubaidullin A, Mukhametshina A, Podyachev S, Ismayev I, Kadirov M, Voloshina A, Mukhametzyanov T, Mustafina A. Tuning magnetic relaxation properties of "hard cores" in core-shell colloids by modification of "soft shell". Colloids Surf B Biointerfaces 2017; 162:52-59. [PMID: 29149728 DOI: 10.1016/j.colsurfb.2017.10.070] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2017] [Accepted: 10/31/2017] [Indexed: 01/15/2023]
Abstract
The present work introduces an impact of polyelectrolyte-based hydrophilic shell on magnetic relaxivity and luminescence of hard cores built from isostructural complexes of Tb(III) and Gd(III) in the core-shell aqueous colloids. Microscopic and scattering techniques reveal "plum pudding" morphology of the colloids, where polyelectrolyte-coated ultrasmall (<5nm) hard cores form aggregates in aqueous solutions. Interaction of bovine serum albumin (BSA) with the colloids provides a tool to modify the polyelectrolyte-based shell, which is the reason for the improvement in both aggregation behavior of the colloids and their relaxivity. The modification of the hydrophilic polyelectrolyte-based shell enables to tune the longitudinal relaxivity from 5.9 to 23.3mM-1s-1 at 0.47T. This tendency is the reason for significant improvement of contrasting effect of the colloids in T1- and T2-weighted images obtained by whole body scanner at 1.5T. High contrasting effect of the colloids, together with low cytotoxicity towards Wi-38 diploid human cells makes them promising MRI contrast agents.
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Affiliation(s)
- Nataliya Shamsutdinova
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, Kazan, 420088, Russian Federation
| | - Rustem Zairov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, Kazan, 420088, Russian Federation.
| | - Irek Nizameev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, Kazan, 420088, Russian Federation
| | - Aidar Gubaidullin
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, Kazan, 420088, Russian Federation
| | - Alsu Mukhametshina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, Kazan, 420088, Russian Federation
| | - Sergey Podyachev
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, Kazan, 420088, Russian Federation
| | - Ildus Ismayev
- A.N. Tupolev Kazan National Research Technical University, 10, K. Marx St., Kazan, 420111, Russian Federation
| | - Marsil Kadirov
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, Kazan, 420088, Russian Federation
| | - Alexandra Voloshina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, Kazan, 420088, Russian Federation
| | - Timur Mukhametzyanov
- Kazan Federal University, Kremlyovskaya Street 18, 420008, Kazan, Russian Federation
| | - Asiya Mustafina
- A.E. Arbuzov Institute of Organic and Physical Chemistry, Kazan Scientific Center, Russian Academy of Sciences, Arbuzov Street 8, Kazan, 420088, Russian Federation
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