title: Highly efficient and photostable photosensitizer based on BODIPY chromophore.
abstract: Photosensitizers are reagents that produce reactive oxygen species upon light illumination and are commonly used to study oxidative stress or for photodynamic therapy. There are many available photosensitizers, but most have limitations, such as low photostability, structural instability, or a limited usable range of solvent conditions. Here, we describe a novel photosensitizer scaffold (2I-BDP) based on the unique characteristics of the BODIPY chromophore (i.e., high extinction coefficient, high photostability, and insensitivity to solvent environment). 2I-BDP shows stronger near-infrared singlet oxygen luminescence emission and higher photostability than the well-known photosensitizer, Rose Bengal. Unlike other photosensitizers, this scaffold is widely applicable under various conditions, including lipophilic and aqueous environments. HeLa cells loaded with 2I-BDP could be photosensitized by light illumination, demonstrating that 2I-BDP is potentially useful as a reagent for cell photosensitization, oxidative stress studies, or PDT.
authors.affiliation: Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan.
authors.forename: Takatoshi
authors.initials: T
authors.lastname: Yogo
authors.forename: Yasuteru
authors.initials: Y
authors.lastname: Urano
authors.forename: Yukiko
authors.initials: Y
authors.lastname: Ishitsuka
authors.forename: Fumio
authors.initials: F
authors.lastname: Maniwa
authors.forename: Tetsuo
authors.initials: T
authors.lastname: Nagano
mesh_terms: D001896:Boron Compounds / Q000737:chemistry*; D005456:Fluorescent Dyes / Q000737:chemistry*; D017319:Photosensitizing Agents / Q000737:chemistry*; D012395:Rose Bengal / Q000737:chemistry; D019265:Spectroscopy, Near-Infrared
chemical_list: C095489:4,4-difluoro-4-bora-3a,4a-diaza-s-indacene; D001896:Boron Compounds; D005456:Fluorescent Dyes; D017319:Photosensitizing Agents; D012395:Rose Bengal