A series of water-soluble photosensitizers based on 3-cinnamoylcoumarin for in vitro antimicrobial photodynamic inactivation.

ABSTRACT: A series of novel water-soluble photosensitizers (PSs; M1-M5) based on 3-cinnamoylcoumarin derivatives, incorporating carboxylic acid salt (M1, M2), pyridine salt (M3, M4) and quaternary ammonium salt (M5) groups, were designed and synthesized. Their photophysical and photochemical properties and in vitro antimicrobial photodynamic inactivation (PDI) were investigated. M2, modified with two carboxylic acid salts, was unstable in phosphate-buffered saline (PBS). The four other PSs all showed higher binding/uptake to methicillin-resistant Staphylococcus aureus (MRSA), A. baumannii and C. albicans compared with the clinical drug methylene blue (MB), except for M1 to A. baumannii. Furthermore, the three cationic PSs (M3-M5) exhibited equivalent antibacterial

SUBMITTER: Sun Z 

PROVIDER: S-EPMC9080500 | biostudies-literature | 2018 May

REPOSITORIES: biostudies-literature