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  • Küçük Resim
    Öğe
    Differences between Cu- and Fe–Cu nanoflowers in their interactions with fluorescent probes ANS and Fura-2 and proteins albumin and thrombin
    (Springer Science and Business Media Deutschland GmbH, 2022) Halets?BuiIn, Inessa; Dzmitruk, Volha; Abashkin, Viktar; Loznikova, Svetlana; Acet, Ömür; Önal, Burcu; Özdemir, Nalan; Bryszewska, Maria; Odabaşı, Mehmet; Shcharbin, Dzmitry
    Among nanomaterials, we can now distinguish a special class called nanoflowers (NFs). These new nanostructures have aroused the interest of scientists due to the topographic features of nanolayers, the special location which allows a higher surface-to-volume ratio compared to classical spherical nanoparticles, thereby significantly increasing the efficiency of surface reactions for nanoflowers. The main value of nanoflowers is their action as enzyme stabilizers. A protein stability is usually enhanced by immobilization on a nanoflower surface through charge affinity and covalent bonds. The possibility of their use in vivo in biocatalysis, biosensors and medicine has been also investigated. We now report on the synthesis of two different nanoflowers: Cu nanoflowers and Fe3+ attached Cu nanoflowers and their interaction with two fluorescent probes, anilino-1-naphthalenesulfonic acid (ANS) and Fura 2, and two proteins, human serum albumin (HSA) and thrombin. Nanoflowers did not bind ANS, but bind efficiently to Fura 2 and both proteins. Modification of Cu–NFs by Fe3+ leads to significant changes in their binding capacity to fluorescent probe Fura 2 and both proteins. Their ability to bind fluorescent probe Fura 2 increased eightfold, and their ability to bind HSA and thrombin increased five times. Regarding Fe3+–Cu–NFs, a difference in binding between HSA and thrombin was found that can be explained by their structural features. Our data indicate the possibility of using studied nanoflowers for sorption of fluorescent probes and proteins.
  • Küçük Resim
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    Dipeptide nanostructures: Synthesis, interactions, advantages and biomedical applications
    (Elsevier, 2023) Ömür, Acet; Shcharbin, Dzmitry; Zhogla, Victoriya; Kirsanov, Pavel; Halets-Bui, Inessa; Önal Acet, Burcu; Gök, Tuba; Bryszewska, Maria; Odabaşı, Mehmet
    Short peptides are important in the design of self-assembled materials due to their versatility and flexibility. Self-assembled dipeptides, a group of peptide nanostructures, have highly attractive uses in the field of biomedicine. Recently these materials have proved to be important nanostructures because of their biocompatibility, low-cost and simplicity of synthesis, functionality/easy tunability and nano dimensions. Although there are different studies on peptide and protein-based nanostructures, more information about self-assembled nanostructures for dipeptides is still required to discover the advantages, challenges, importance, synthesis, interactions, and applications. This review describes and discusses the self-assembled dipeptide nanostructures especially for biomedical applications.