A novel UVA ‐associated circUBE2I mediates ferroptosis in HaCaT cells
The canonical splicing ofUBE2I gene precursor mRNA (pre-mRNA) involves the removal of introns and joining of exons to create a mature messenger RNA (mRNA), which is translated into UBC9 protein. UVA irradiation in keratinocytes can induce the alternative back-splicing of theUBE2I gene generating a circular RNA, named circUBE2I, formed by exon 2 to exon 6. The circUBE2I is crucial in making skin cells more susceptible to ferroptosis, an iron-dependent form of regulated cell death, in response to UVA exposure or H2O2 treatment, by downregulating FTH1, GPX4, CD71, and xCT. AbstractAlternative splicing of precursor messenger R...
Source: Photochemistry and Photobiology - November 21, 2023 Category: Science Authors: Peng Yi,
Yan Huang,
Xin Zhao,
Zhengshan Qin,
Danli Zhu,
Li Liu,
Yuxi Zheng,
Jianguo Feng,
Menghong Long Tags: RESEARCH ARTICLE Source Type: research
New insight into highly efficient CSA@g ‐C3N4 for photocatalytic oxidation of benzyl alcohol and thioanisole: NAEDS as a promoter of photoactivity under blue LED irradiation
g-C3N4 has been modified through an environmentally friendly approach of surface engineering with camphorsulfonic acid (CSA) and applied in the photooxidation of benzyl alcohol and thioanisole under LED irradiation. In addition, this study indicates that deploying choline chloride –urea deep eutectic solvent as an external factor plays the role of photoactivity accelerator. AbstractAn open new perspective has been established toward synthesizing eco-friendly CSA@g-C3N4 employing surface engineering. The carbon nitride modified through camphorsulfonic acid was designed and developed in a category of the new generation of ...
Source: Photochemistry and Photobiology - November 17, 2023 Category: Science Authors: Saber Hosseini,
Najmedin Azizi Tags: RESEARCH ARTICLE Source Type: research
Effect of surface ligands on the photoinduced electron transfer rate and efficiency in ZnO quantum dots and graphene oxide assemblies
The graphical abstract reveals the interaction between surface-functionalized ZnO QDs and GO due to the polar groups that are present on the surface of both QDs. The steady-state and time-resolved fluorescence measurements corroborated by cyclic voltammetry analysis suggest efficient photoexcited electron transfer from ZnO QDs to GO. AbstractApart from biocompatibility, ZnO quantum dots (QDs) are considered to be an efficient luminescence material due to their low cost and high redox potential. Here, we report the synthesis of ZnO QDs by using five different functionalizing ligands like mercaptoacetic acid (MAA), 3-mercapt...
Source: Photochemistry and Photobiology - November 14, 2023 Category: Science Authors: Muhammad Adnan Khalid,
Muhammad Mubeen,
Maria Mukhtar,
Poshmal Sumreen,
Bushra Naz,
Firdevs Ayd ın,
Demet Asil,
Azhar Iqbal Tags: RESEARCH ARTICLE Source Type: research
A coumarin ‐modified graphene quantum dot‐based luminogen for the detection of cysteine in aqueous media
3-aminocoumarin functionalized graphene quantum dot (AMC-GQD) as a turn-off fluorescent-based sensor for the selective and sensitive detection of cysteine in aqueous media via photoinduced hole transfer mechanism. AbstractA biocompatible fluorescence sensor for cysteine detection receives wide appreciation recently, because of its importance in the medical field. Functionalized graphene quantum dots (GQDs) are recently emerging biocompatible quantum dots, which are considered as suitable candidates for biomolecule detection. Motivated by this concept, here we have developed a versatile fluorescent probe based on 3-aminocou...
Source: Photochemistry and Photobiology - November 14, 2023 Category: Science Authors: Deepa Sebastian,
Kala Ramakrishnan Tags: RESEARCH ARTICLE Source Type: research
The naming of the blue UV photoreceptor “cryptochrome”: From despised pun to ubiquitously found chromophore(s) controlling multiple functions
A triple-peaked UV-blue photoacceptor was first found in fungi and nicknamed cryptochrome due to its being cryptic and found then only in cryptogamous plants. It was subsequently discovered in higher plants and even later in algae, insects, fish, amphibians, and mammals including humans. Cryptochrome is the photoacceptor controlling a plethora of properties in all these systems. (Source: Photochemistry and Photobiology)
Source: Photochemistry and Photobiology - November 10, 2023 Category: Science Authors: Jonathan Gressel Tags: CORRESPONDENCE Source Type: research
Assessing the safety of new germicidal far ‐UVC technologies
The COVID-19 pandemic underscored the crucial importance of enhanced indoor air quality control measures to mitigate the spread of respiratory pathogens. Far-UVC has emerged as a highly promising approach for indoor air disinfection. While current evidence supports using far-UVC systems within existing guidelines, understanding the upper safety limit is critical to maximizing its effectiveness, particularly for the acute phase of a pandemic or epidemic when greater protection may be needed. This review article summarizes the substantial present knowledge on far-UVC safety regarding skin and eye exposure and highlights rese...
Source: Photochemistry and Photobiology - November 7, 2023 Category: Science Authors: Maximilian G örlitz,
Lennart Justen,
Patrick J. Rochette,
Manuela Buonanno,
David Welch,
Norman J. Kleiman,
Ewan Eadie,
Sachiko Kaidzu,
William J. Bradshaw,
Emilia Javorsky,
Nigel Cridland,
Anat Galor,
Martin Guttmann,
Martina C. Meinke,
Jo Tags: INVITED REVIEW Source Type: research
Low ‐cost, 3D printed irradiation system for in vitro photodynamic therapy experiments
This report addresses the need for improved in vitro photodynamic therapy (PDT) illumination systems, focusing on a practical setup for multiwell plates. It aims to enhance the quality of PDT research on cell cultures in a user-friendly and reproducible manner. Current research lacks cost-effective, automated setups for PDT on cell cultures. W e introduce an economical setup, using a commercial LED lamp with a cooling unit in a 3D-printed enclosure for multiwell irradiation. The setup is versatile, accommodating various wavelengths and illumination field adjustments. The study evaluates its performance by measuring light...
Source: Photochemistry and Photobiology - November 6, 2023 Category: Science Authors: Chris Acquah,
Zachary Pabis,
Sourav Kanti Seth,
Liraz Levi,
Carlos E. Crespo ‐Hernández Tags: METHODS ARTICLE Source Type: research
Correction to “Effects of HPV Status on Responsiveness to Ionizing Radiation vs Photodynamic Therapy in Head and Neck Cancer Cell lines”
(Source: Photochemistry and Photobiology)
Source: Photochemistry and Photobiology - November 6, 2023 Category: Science Tags: ERRATUM Source Type: research
Polymerase iota plays a key role during translesion synthesis of UV ‐induced lesions in the absence of polymerase eta
In conclusion, we propose that Polι act s as a bona fide backup for Polη in the TLS of UV-photoproducts. (Source: Photochemistry and Photobiology)
Source: Photochemistry and Photobiology - November 6, 2023 Category: Science Authors: Davi Jardim Martins,
Jenny Kaur Singh,
Tiya Jahjah,
Alexandre Teixeira Vessoni,
Giovana da Silva Leandro,
Matheus Molina Silva,
Denis Serge Fran çois Biard,
Annabel Quinet,
Carlos Frederico Martins Menck Tags: RESEARCH ARTICLE Source Type: research
Exploring the association between a standardized extract of pequi peels (Caryocar brasiliense Cambess) and blue light as a photodynamic therapy for treating superficial wounds
In vitro, we quantified reactive oxygen species (ROS), assessed skin keratinocytes (HaCat) viability and migration, and aPDT antimicrobial activity. In vivo, we assessed wound closure for pequi extract (PE) 30 μg/mL. ROS were increased in cell monolayers regardless of PE concentration. PE at low doses stimulates epithelial cells. The antimicrobial activity was observed for aPDT. In vivo, the fibroblastic infiltration was significantly greater for the pequi-treated group and aPDT did not impair the wound healing process. AbstractNatural products derived from plants can be used as photosensitizers for antimicrobial pho...
Source: Photochemistry and Photobiology - November 2, 2023 Category: Science Authors: Luiza Alves Diniz,
Luiza de Almeida Queiroz Ferreira,
Rafaela de Brito Ribeiro,
Sarah Luiza Galv ão de Jesus,
Thales Augusto Anestino,
Alisson Samuel Portes Caldeira,
Giovanna Ribeiro Souto,
Gleide Fernandes de Avelar,
Flávio Almeida Amaral,
Tags: RESEARCH ARTICLE Source Type: research
Correction to “Characteristics of an Impaired PDT Response”
(Source: Photochemistry and Photobiology)
Source: Photochemistry and Photobiology - October 31, 2023 Category: Science Tags: ERRATUM Source Type: research
TMPyP ‐mediated photoinactivation of Pseudomonas aeruginosa improved in the presence of a cationic polymer
Alterations in the bacterial envelopes produced by the cationic polymer (Eu) increase the entry of the cationic porphyrin (TMPyP), which is distributed homogeneously into the bacterial cell: (A) schematic representation, (B) fluorescence microscopy images, (C) quantification of fluorescence images. (E) The greater internalization of TMPyP contributes to achieving the eradication ofPseudomonas aeruginosa with lower concentration of photosensitizer and lower light dose (fluence rate of 28.7 mW cm−2) compared to those required for TMPyP alone (D). AbstractPseudomonas aeruginosa is one of the most refractory organisms t...
Source: Photochemistry and Photobiology - October 27, 2023 Category: Science Authors: Luciana P. Campagno,
Ezequiel D. Quiroga,
Edgardo N. Durantini,
Fabiana L. Alovero Tags: RESEARCH ARTICLE Source Type: research
Withdrawal
Pe ñaloza, C.H., Wood, A., Eadie, E., Noakes, C., King, M.-F. and Wood, K. (2023) Validated computational modeling to evaluate the spatial inactivation of airborne pathogens by Far-UVC irradiation. Photochem Photobiol. Accepted Author Manuscript.https://doi.org/10.1111/php.13807The above article, published online on April 8, 2023 in Wiley Online Library, has been withdrawn by agreement between the Editor in Chief, authors, and Wiley Periodicals LLC. The withdrawal was requested by the authors due to a unit conversion error identified post-publication that invalidates the conclusions of the article. (Source: Photochemistry and Photobiology)
Source: Photochemistry and Photobiology - October 27, 2023 Category: Science Tags: WITHDRAWAL Source Type: research
Impact of green and blue ‐green light on the growth, pigment concentration, and fatty acid unsaturation in the microalga Monoraphidium braunii
In this study, the impact of white light (400 –700 nm), blue light (400–550 nm), green light (450–600 nm), and red light (580–700 nm) on the microalgaMonoraphidium braunii was investigated. The results demonstrate that light quality is an important factor for the metabolism and growth of microalgae. Specifically, the blue-green waveband (450 –550 nm) appears to be involved in the fatty acid and pigment metabolism ofM. braunii. AbstractThe spectral composition of light is an important factor for the metabolism of photosynthetic organisms. Several blue light-regulated metabolic processes have already b...
Source: Photochemistry and Photobiology - October 26, 2023 Category: Science Authors: Mark Helamieh,
Marco Reich,
Philipp Rohne,
Ulf Riebesell,
Martin Kerner,
Klaus K ümmerer Tags: RESEARCH ARTICLE Source Type: research
Polydopamine ‐curcumin coating of titanium for remarkable antibacterial activity via synergistic photodynamic and photothermal properties
Titanium modified by polydopamine and curcumin can kill Staphylococcus aureus and Escherichia coli (two pathogenic bacteria) through the synergistic action of photothermal and photodynamic, avoiding antibiotic resistance. It provides a new way to solve the problem of titanium implant infection. AbstractCombined photothermal therapy (PTT) and photodynamic therapy (PDT) has emerged as a novel and effective antibacterial strategy. In order to endow titanium (Ti) with antibacterial properties, the Ti-PDA-Cur composite was prepared using the excellent adhesion properties of polydopamine (PDA) to load curcumin (Cur) on the surfa...
Source: Photochemistry and Photobiology - October 26, 2023 Category: Science Authors: Qing Guo,
Peiyuan Li,
Ying Zhang,
Hongjun Yan,
Qiuyan Yan,
Rixiang Su,
Wei Su Tags: RESEARCH ARTICLE Source Type: research
