Ceric phosphates and nanocrystalline ceria: selective toxicity to melanoma cells

Kozlova, T. O.; Попов, А. И.; Romanov, M.V.; Savintseva, I.V.; Vasilyeva, D.N.; Baranchikov, А. Е.; Ivanov, V. K.

doi:10.17586/2220-8054-2023-14-2-223-230

Cited by 4 publications

(2 citation statements)

References 58 publications

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“…The FTIR spectra of both phosphates ( Figure 2 ) exhibit absorption bands in the 600–640 and 1000 cm −1 ranges corresponding to the bending and stretching modes of the phosphate groups, respectively [ 58 , 59 ]. One can also note a broad halo in the 2000–3600 cm −1 corresponding to the stretching modes of water molecules and O-H groups with various hydrogen bond strengths.…”

Section: Resultsmentioning

confidence: 99%

Composite Anion Exchange Membranes Based on Quaternary Ammonium-Functionalized Polystyrene and Cerium(IV) Phosphate with Improved Monovalent-Ion Selectivity and Antifouling Properties

et al. 2023

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The possibility of targeted change of the properties of ion exchange membranes by incorporation of various nanoparticles into the membranes is attracting the attention of many research groups. Here we studied for the first time the influence of cerium phosphate nanoparticles on the physicochemical and transport properties of commercial anion exchange membranes based on quaternary ammonium-functionalized polystyrenes, such as heterogeneous Ralex® AM and pseudo-homogeneous Neosepta® AMX. The incorporation of cerium phosphate on one side of the membrane was performed by precipitation from absorbed cerium ammonium nitrate (CAN) anionic complex with ammonium dihydrogen phosphate or phosphoric acid. The structures of the obtained hybrid membranes and separately synthesized cerium phosphate were investigated using FTIR, P31 MAS NMR, EDX mapping, and scanning electron microscopy. The modification increased the membrane selectivity to monovalent ions in the ED desalination of an equimolar mixture of NaCl and Na2SO4. The highest selectivities of Ralex® AM and Neosepta® AMX-based hybrid membranes were 4.9 and 7.7, respectively. In addition, the modification of Neosepta® membranes also increased the resistance to a typical anionic surfactant, sodium dodecylbenzenesulfonate.

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Section: Resultsmentioning

confidence: 99%

Composite Anion Exchange Membranes Based on Quaternary Ammonium-Functionalized Polystyrene and Cerium(IV) Phosphate with Improved Monovalent-Ion Selectivity and Antifouling Properties

et al. 2023

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“…Currently, nanomaterials are being widely studied as potential means of increasing the bioavailability of drugs and the effectiveness of therapy for socially significant diseases [1][2][3][4]. Cerium oxide nanoparticles (CeNPs) hold a special place among engineered nanomaterials due to the wide range of their enzyme-like activities and bioavailability.…”

Section: Introductionmentioning

confidence: 99%

Cerium oxide@silica core-shell nanocomposite as multimodal platforms for drug release and synergistic anticancer effects

Zamyatina,

Kottsov,

Anikina

et al. 2023

Nanosystems: Phys. Chem. Math.

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Cerium oxide nanoparticles (CeNPs) are among the most promising materials with pH-sensitive redox-activity for biomedical nanotechnologies. CeNPs are known to reduce the toxicity of the chemotherapeutic drug doxorubicin (DOX) for normal cells. Here we have proposed and analyzed a new hybrid cerium/silica containing SiNPs@DOX@CeNPs nanocomposite. We showed that the average size of the nanocomposite is 190 nm and it has a spherical shape. The SiNPs@DOX@CeNPs nanocomposite provides effective synergistic anticancer activity of CeNPs with doxorubicin (DOX), as well as selective toxicity against human osteosarcoma (MNNG/HOS) cells in vitro. The SiNPs@DOX@CeNPs nanocomposite may be a good candidate to increase the effectiveness of cancer doxorubicin chemotherapy.

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Plasma-chemical synthesis of highly dispersed core–shell structures from a mechanical mixture of titanium carbide and titanium nickelide

Avdeeva,

Luzhkova,

Murzakaev

et al. 2024

Izv. VUZ. Poroshk. Met.

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In this paper, we studied the formation of ultrafine and nanocrystalline core–shell structures based on refractory compounds of titanium with nickel during plasma-chemical synthesis of a mechanical mixture of TiC and TiNi in a low-temperature nitrogen plasma. Cooling took place in an intensely swirling nitrogen flow in a quenching chamber. The derived products were separated in a vortex-type cyclone and a bag-type fabric filter. After processing, the products were subjected to encapsulation aimed at reducing the pyrophoricity for long-term storage of the resulting finely dispersed powders under normal conditions. X-ray diffraction and high-resolution transmission electron microscopy were used to study the resulting powder products of plasma-chemical synthesis, and density measurements were conducted. Additionally, to define the average particle size more accurately, the specific surface was measured using the BET method. The instrumental research revealed the presence of ultra- and nanodispersed particles with a core–shell structure in the powder products. These particles included titanium carbide-nitride compounds as a refractory core and metallic nickel as a metallic shell. In addition, the presence of complex titanium-nickel nitride Ti0.7Ni0.3N was recorded. According to direct measurements, the average particle size of the nanocrystalline fraction is 18.9 ± 0.2 nm. The obtained research results enabled us to develop a chemical model of crystallization of TiCxNy–Ni core–shell structures, which is implemented in a hardening chamber at a crystallization rate of 105 °С/s. To fabricate the model, we used the reference data on the boiling and crystallization temperatures of the elements and compounds being a part of highly dispersed compositions and recorded by X-ray diffraction, as well as the ΔG(t) dependences for TiC and TiN.

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Ceric phosphates and nanocrystalline ceria: selective toxicity to melanoma cells

Cited by 4 publications

References 58 publications

Composite Anion Exchange Membranes Based on Quaternary Ammonium-Functionalized Polystyrene and Cerium(IV) Phosphate with Improved Monovalent-Ion Selectivity and Antifouling Properties

Composite Anion Exchange Membranes Based on Quaternary Ammonium-Functionalized Polystyrene and Cerium(IV) Phosphate with Improved Monovalent-Ion Selectivity and Antifouling Properties

Cerium oxide@silica core-shell nanocomposite as multimodal platforms for drug release and synergistic anticancer effects

Plasma-chemical synthesis of highly dispersed core–shell structures from a mechanical mixture of titanium carbide and titanium nickelide

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