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Correction: Silina et al. Influence of the Synthesis Scheme of Nanocrystalline Cerium Oxide and Its Concentration on the Biological Activity of Cells Providing Wound Regeneration. <i>Int. J. Mol. Sci.</i> 2023, <i>24</i>, 14501.

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Amorphous and crystalline cerium(IV) phosphates: biocompatible ROS-scavenging sunscreens.

T O Kozlova1, A L Popov2, I V Kolesnik3

  • 1Kurnakov Institute of General and Inorganic Chemistry of the Russian Academy of Sciences, Moscow 119991, Russia. van@igic.ras.ru.

Journal of Materials Chemistry. B
|February 2, 2022
PubMed
Summary
This summary is machine-generated.

Tetravalent cerium phosphates exhibit excellent UV-shielding properties comparable to titanium dioxide and cerium oxide. These compounds demonstrated no toxicity and even promoted cell growth, making them promising for sunscreen applications.

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Area of Science:

  • Materials Science
  • Nanotechnology
  • Photochemistry

Background:

  • Cerium phosphates are explored for their potential applications.
  • UV radiation poses risks to skin and cells.
  • Nanomaterials are investigated for enhanced UV protection.

Purpose of the Study:

  • To evaluate the UV-shielding and cytotoxicity of amorphous and crystalline cerium(IV) phosphates.
  • To compare their efficacy against established UV-filters like TiO2 and CeO2.
  • To assess their photoprotective effects on human cells.

Main Methods:

  • Synthesis and characterization of cerium(IV) phosphates.
  • Measurement of sun protection factor (SPF) and UV-A protection factor.
  • In vitro cytotoxicity and photocytotoxicity assays on NCTC L929 fibroblasts and human mesenchymal stem cells.
  • Photoprotective effect evaluation on human mesenchymal stem cells.

Main Results:

  • Cerium(IV) phosphate NH4Ce2(PO4)3 showed UV-shielding comparable to nanocrystalline TiO2 and CeO2.
  • Cerium(IV) phosphates exhibited no toxicity across a wide concentration range.
  • Enhanced proliferative activity was observed in human mesenchymal stem cells treated with cerium(IV) phosphates.
  • A significant photoprotective effect of NH4Ce2(PO4)3 on human mesenchymal stem cells was demonstrated.

Conclusions:

  • Tetravalent cerium phosphates possess significant UV-shielding capabilities.
  • These compounds are non-toxic and can even promote cell proliferation.
  • Cerium(IV) phosphates are promising candidates for next-generation sunscreen formulations.