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Mazurkiewicz, Joanna; Stanek, Ewa; Kolodziejczyk, Aleksandra; Karpiel, Marta; Czamara, Krzysztof; Ferreira, Tiago H; Maximiano, Pedro; Simões, Pedro N; Reva, Igor; Kalinowska-T u cik, Justyna; Kaczor, Agnieszka
Physical chemistry chemical physics : PCCP, 02/2024, Volume: 26, Issue: 9Journal Article
Carotenoids are very effectively delivered by albumin to adipocytes. The uptake of carotenoids to the cells occurs in the form of self-aggregates that localize in the vicinity of the adipocyte membrane, as shown by high spatial resolution Raman spectroscopy. The binding of carotenoids to albumin and the mechanism of their transport were elucidated with the help of chiroptical spectroscopies, in tandem with molecular docking and molecular dynamics simulations. In particular, apart from the recognized high affinity pocket of albumin that binds a carotenoid monomer in domain I, we have identified a hydrophobic periphery area in domain IIIB that loosely bounds the self-aggregated carotenoid in aqueous media and enables its easy detachment in hydrophobic environments. This explains the effectiveness of albumins as nanocarriers of carotenoids to adipocytes in vitro . A hydrophobic periphery area of albumin loosely bounds the self-aggregated astaxanthin in water and enables its easy detachment in hydrophobic environment. This explains the effectiveness of albumins as nanocarriers of carotenoids to adipocytes.
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