Photodynamic therapy (PDT) destroys tumor cells mainly through singlet oxygen (O) generated by light-irradiated photosensitizers (PSs). However, the fleeting half-life of O greatly impairs PDT efficacy. Herein, we propose an unreported unsaturated fatty acid (UFA)-assisted PS co-assembly strategy to address this problem. Three UFAs, namely, oleic acid (OA), linoleic acid (LA) and linolenic acid (LNA), are capable of co-assembling with 5,10,15,20-tetrakis(4-aminophenyl)porphyrin (TAPP) into uniform nanoparticles. Under irradiation, TAPP produces O, which directly attacks tumor cells and simultaneously oxidizes UFAs to generate lipid hydroperoxides with sustained damage. Interestingly, the unsaturation degree of UFAs is not only related to their peroxidation rate but also has a remarkable impact on the intracellular TAPP release characteristic of the nanoparticles (NPs). The TAPP-LA NPs could release the cargo rapidly and produce the highest lipid peroxidation and reactive oxygen species levels upon irradiation. Such a unique finding sheds new light on UFA-based combination applications for enhanced photodynamic efficacy by boosting lipid peroxidation.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.jconrel.2021.04.022 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Effects of Tocotrienol on Cardiovascular Risk Markers in Patients With Chronic Kidney Disease: A Randomized Controlled Trial.
J Nutr Metab
January 2025
Graduate Program in Medical Sciences, Fluminense Federal University (UFF), Niterói, Rio de Janeiro, Brazil.
Tocotrienols, isomers of vitamin E, may provide an effective nutritional strategy to mitigate common cardiovascular risks such as dyslipidemia, inflammation, and oxidative stress in patients with chronic kidney disease (CKD). This double-blind, placebo-controlled, randomized clinical trial aimed to evaluate the effects of a tocotrienol-rich fraction (TRF) supplementation (300 mg/day) on oxidative stress and inflammatory markers, including transcription factors in nondialysis (ND) and hemodialysis (HD) CKD patients for three months. Interleukin-6, tumor necrosis factor- (IL-6 and TNF-), C-reactive protein (CRP), lipid peroxidation, biochemical parameters, and transcription factors such as NRF2 and NF-B mRNA expression were evaluated.
View Article and Find Full Text PDFReview of cancer cell volatile organic compounds: their metabolism and evolution.
Front Mol Biosci
January 2025
Vienna Metabolomics Center (VIME), University of Vienna, Vienna, Austria.
Cancer is ranked as the top cause of premature mortality. Volatile organic compounds (VOCs) are produced from catalytic peroxidation by reactive oxygen species (ROS) and have become a highly attractive non-invasive cancer screening approach. For future clinical applications, however, the correlation between cancer hallmarks and cancer-specific VOCs requires further study.
View Article and Find Full Text PDFThe Effects of Hydrogen-Rich Water on Blood Lipid Profiles in Metabolic Disorders Clinical Trials: A Systematic Review and Meta-analysis.
Int J Endocrinol Metab
July 2024
Proteomics Research Center, Faculty of Paramedical Sciences, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
Context: Metabolic disorders are a growing global concern, especially in developed countries, due to their increasing prevalence. Serum lipid profiles, including triglycerides (TG), total cholesterol (TC), high-density lipoprotein (HDL), and low-density lipoprotein (LDL), are commonly used clinical biomarkers for monitoring the progression of these metabolic abnormalities. In recent decades, hydrogen-rich water (HRW) has gained attention as a safe and effective treatment, with regulatory effects on lipid peroxidation and inflammatory responses in clinical trials.
View Article and Find Full Text PDFGSH/pH-responsive copper-based cascade nanocomplexes inducing immunogenic cell death through cuproptosis/ferroptosis/necroptosis in oral squamous cell carcinoma.
Mater Today Bio
February 2025
Stomatology Department, The Fifth Affiliated Hospital, Sun Yat-sen University, Zhuhai, Guangdong, China.
Oral squamous cell carcinoma (OSCC) remains a formidable challenge due to high recurrence rates and limited efficacy of conventional treatments. Immunotherapy holds potential, but its effectiveness is often restricted by low patient responsiveness. This study presents a novel therapeutic strategy using GSH/pH-responsive copper-based cascade nanocomplexes to induce immunogenic cell death (ICD) in OSCC.
View Article and Find Full Text PDFImmune response accelerated telomere shortening during early life stage of a passerine bird, the blue tit ().
Biol Lett
January 2025
Cluster of Biomolecular Science, Division of Toxicology, Wageningen University and Research, 6708 WE Wageningen, The Netherlands.
Dealing with infections is a daily challenge for wild animals. Empirical data show an increase in reactive oxygen species (ROS) production during immune response. This could have consequences on telomere length, the end parts of linear chromosomes, commonly used as proxy for good health and ageing.
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!