The photoantimicrobial potential of four mushroom species (i.e., , , , and ) was explored by studying the minimal inhibitory concentrations (MIC) via a light-modified broth microdilution assay based on the recommended protocols of the European Committee on Antimicrobial Susceptibility Testing (EUCAST). The extracts were tested against , , and under blue (λ = 428 and 478 nm, = 30 J/cm) and green light (λ = 528 nm, = 30 J/cm) irradiation. Three extracts showed significant photoantimicrobial effects at concentrations below 25 μg/mL. Targeted isolation of the major pigments from led to the identification of two new potent photoantimicrobials, one of them (i.e., dermocybin) being active against and under green light irradiation [PhotoMIC = 39.5 μM (12.5 μg/mL) and 2.4 μM (0.75 μg/mL), respectively] and the other one (i.e., emodin) being in addition active against in a low micromolar range [PhotoMIC = 11.1 μM (3 μg/mL)]. Intriguingly, dermocybin was not (photo)cytotoxic against the three tested cell lines, adding an additional level of selectivity. Since both photoantimicrobials are not charged, this discovery shifts the paradigm of cationic photosensitizers.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10616806 | PMC |
| http://dx.doi.org/10.1021/acs.jnatprod.2c01157 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Study of the Influence of Structure-Chemical Properties of Electron Beam-Polymerized PEGDA/Gelatin Hybrid Hydrogels on the Uptake and Release Dynamics of Different Photosensitizer Molecules.
Biomacromolecules
January 2025
Institute of Surface Engineering (IOM), Permoserstraße 15, 04318 Leipzig, Germany.
Hybrid hydrogels are promising for wound dressing, tissue engineering, and drug delivery due to their exceptional biocompatibility and mechanical stability. This study synthesized hybrid hydrogels for photodynamic therapy using electron beam-initiated polymerization with varying PEGDA/gelatin ratios and irradiation doses to evaluate their effectiveness as uptake and release systems for five photosensitizers. Toluidine blue, O (TBO); methylene blue (MB); eosin, Y; indocyanine, green; and sodium meso-tetraphenylporphine-4,4',4″,4‴-tetrasulfonate were studied for their uptake and release dynamics in relation to their structural properties and the hydrogels' composition.
View Article and Find Full Text PDFEngineering spatially-confined conduits to tune nerve self-organization and allodynic responses via YAP-mediated mechanotransduction.
Nat Commun
January 2025
State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China.
Chronic allodynia stemming from peripheral stump neuromas can persist for extended periods, significantly compromising patients' quality of life. Conventional managements for nerve stumps have demonstrated limited effectiveness in ensuring their orderly termination. In this study, we present a spatially confined conduit strategy, designed to enhance the self-organization of regenerating nerves after truncation.
View Article and Find Full Text PDFConstructing an Isopolymolybdate-Based Bifunctional Photocatalyst for Promoting Nitroaromatic Reduction and C-H Oxidation.
Inorg Chem
December 2024
Henan Key Laboratory of Polyoxometalate Chemistry, College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China.
Amide compounds are widely present in drug molecules and natural products, which can be synthesized by acid-amine condensation. It is urgent to design new photocatalysts for achieving both nitroaromatic reduction and C-H oxidation to obtain raw materials, carboxylic acids, and aromatic amines. Herein, a novel isopolymolybdate-incorporated photoactive metal-organic framework, -TPT, was constructed by combining the oxidation catalyst [MoO], Ni(II) cation, and photosensitive ligand 2,4,6-tri(4-pyridyl)-1,3,5-triazine (TPT).
View Article and Find Full Text PDFMicrotubule-Targeting NAP Peptide-Ru(II)-polypyridyl Conjugate As a Bimodal Therapeutic Agent for Triple Negative Breast Carcinoma.
J Am Chem Soc
December 2024
Department of Chemical Sciences and Center for Advanced Functional Materials, Indian Institute of Science Education and Research (IISER) Kolkata, Mohanpur 741246, West Bengal, India.
Triple-negative breast cancer (TNBC) poses significant treatment challenges due to its high metastasis, heterogeneity, and poor biomarker expression. The N-terminus of an octapeptide NAPVSIPQ () was covalently coupled to a carboxylic acid derivative of Ru(2,2'-bipy) () to synthesize an N-stapled short peptide-Rubpy conjugate (). This photosensitizer (PS) was utilized to treat TNBC through microtubule (MT) targeted chemotherapy and photodynamic therapy (PDT).
View Article and Find Full Text PDFPhotoimmunologic Therapy of Stubborn Biofilm via Inhibiting Bacteria Revival and Preventing Reinfection.
Adv Mater
December 2024
School of Biomedical Engineering, Sichuan University, Chengdu, 610065, China.
Stubborn biofilm infections pose serious threats to public health. Clinical practices highly rely on mechanical debridement and antibiotics, which often fail and lead to persistent and recurrent infections. The main culprits are 1) persistent bacteria reviving, colonizing, and rejuvenating biofilms, and 2) secondary pathogen exposure, particularly in individuals with chronic diseases.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!