Investigating the reactive oxygen species production of Rose Bengal and Merocyanine 540-loaded radioluminescent nanoparticles.

ABSTRACT: Radioluminescent nanomaterials have garnered significant attention in the past decade due to their potential to perform X-ray mediated photodynamic therapy (X-PDT). Many of these materials are assumed to produce singlet oxygen based on a single assay. Herein we demonstrate that multiple assays are required to confidently determine whether singlet oxygen or other reactive oxygen species are being produced through type I or type II PDT mechanisms. Rose Bengal and Merocyanine 540 photosensitizers were loaded into mesoporous silica-coated NaLuF₄:Dy³⁺,Gd³⁺ nanoparticles and the combination of ABDA, DPBF, and NaN₃ assays along with electron paramagnetic resonance were employed to determine that superoxide and hydroxyl radicals were exclusively produced

SUBMITTER: Nsubuga A 

PROVIDER: S-EPMC9417208 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature