Superior photo-induced antibacterial/antibiofilm activities of ZnPcs/TiO2 and computational simulation studies

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dc.authoridAslan, Emre/0000-0002-7672-2873
dc.authoridONER, Erkan/0000-0002-6332-6484
dc.authoridOzcan, Tugce/0000-0001-5209-1950
dc.authoridAl-Khafaji, Khattab/0000-0002-2165-9256
dc.authoridYUZER, ABDULCELIL/0000-0002-2287-4126
dc.authoridAksoy Cekceoglu, Ilknur/0000-0001-9950-3967
dc.authoridHatay Patir, Imren/0000-0003-2937-6557
dc.contributor.authorOzcan, Tugce
dc.contributor.authorcekceoglu, Ilknur Aksoy
dc.contributor.authorAl-Khafaji, Khattab
dc.contributor.authorOner, Erkan
dc.contributor.authorYuzer, A. Celil
dc.contributor.authorYalin, Serap
dc.contributor.authorAslan, Emre
dc.date.accessioned2025-03-17T12:25:51Z
dc.date.available2025-03-17T12:25:51Z
dc.date.issued2023
dc.departmentTarsus Üniversitesi
dc.description.abstractBacteria can form biofilms on any surface, which causes biofilm-associated infections and bacterial resistance to antibiotics. Thus, it is important to design new-generation non-chemotherapeutic nanoagents for effective antibacterial and antibiofilm strategies. Herein, the effects of the anchoring groups, which are imidazole and carboxylic acid, of zinc phthalocyanines (ZnPcs) sensitized TiO2 on Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) were investigated under light-emitting diode (LED) irradiation. The photocatalytic antibacterial activities of ZnPc-1/TiO2 and ZnPc-2/TiO2 on the bacterial strains were examined by monitoring the optical density value at 600 nm (OD600 nm). Glutathione (GSH) oxidation assay was used to measure the reactive oxygen species (ROS) generation activity of the compounds. Bacterial damages were imaged by scanning electron microscopy (SEM). According to our photocatalytic antibacterial mechanism, photogenerated electrons are transferred from Pcs to TiO2 and then react with O-2, thus creating ROS, which causes damage to bacterial membrane, protein and biofilm destruction as well. Further, computational simulation analysis was used to show the interaction patterns of ZnPc-1 and ZnPc-2 with penicillin binding protein 2a (PBP2a) of S. aureus and FimH lectin protein (PDB:4XO8) of E. coli to elucidate the dark molecular antibacterial mechanism of the compounds. The obtained results from computational studies showed that ZnPc-2 binds firmly through bonds with the 1MWT protein from S. aureus. On the other hand, ZnPc-1 binds firmly through bonds with the 4XO8 protein from E. coli. From combining experimental and computational results, we can conclude that this strategy can be applied to different types of bacterial infections.
dc.description.sponsorshipResearch Foundation of Selcuk University [22201049]; TUBITAK
dc.description.sponsorshipThe authors would like to thank the Research Foundation of Selcuk University (SUBAP-Grant no. 22201049) and TUBITAK 2210-C for the financial support of this work. We thank Dr Fatih Sevgi from Vocational School of Health Services Selcuk University for his valuable help with microorganism culture collection. This paper is part of the M.Sc. thesis prepared by Tugce Ozcan.
dc.identifier.doi10.1039/d3tb00056g
dc.identifier.endpage6371
dc.identifier.issn2050-750X
dc.identifier.issn2050-7518
dc.identifier.issue27
dc.identifier.pmid37309912
dc.identifier.scopus2-s2.0-85163715121
dc.identifier.scopusqualityQ1
dc.identifier.startpage6361
dc.identifier.urihttps://doi.org/10.1039/d3tb00056g
dc.identifier.urihttps://hdl.handle.net/20.500.13099/1904
dc.identifier.volume11
dc.identifier.wosWOS:001003782300001
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherRoyal Soc Chemistry
dc.relation.ispartofJournal of Materials Chemistry B
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WOS_20250316
dc.subjectResistance
dc.titleSuperior photo-induced antibacterial/antibiofilm activities of ZnPcs/TiO2 and computational simulation studies
dc.typeArticle

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