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Since the evolution of the aerobic metabolism, reactive oxygen species (ROS) have represented significant challenges to diverse life forms. In recent decades, increasing knowledge has revealed a dual role for ROS in cell physiology, showing they serve as a major source of cellular damage while also functioning as important signaling molecules in various biological processes. Our understanding of ROS homeostasis and ROS-mediated cellular signaling pathways has presumed that they are ancient and highly conserved mechanisms shared by most organisms. However, emerging evidence highlights the complexity and plasticity of ROS signaling, particularly in animals that have evolved in extreme environments. In this review, we focus on ROS generation, antioxidative systems and the main signaling pathways that are influenced by ROS. In addition, we discuss ROS's responsive transcription regulation and how it may have been shaped over the course of evolution.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC10967436 | PMC |
http://dx.doi.org/10.3390/antiox13030312 | DOI Listing |
Zygote
September 2025
Faculty of Veterinary Medicine, Laboratory of Manipulation of Oocyte and Preantral Follicles (LAMOFOPA), State University of Ceará, Fortaleza, CE, Brazil.
This work investigated the effect of zinc oxide nanoparticles functionalized with curcumin (ZnO+CUR) supplementation during the maturation (IVM) of bovine oocytes on the embryo production and the cellular antioxidant response. A total of 1,625 cumulus-oocyte complexes (COCs) were cultured in the maturation medium in the absence (0 µM - control) or presence of different concentrations of ZnO+CUR (3 µM, 6 µM or 12 µM). After IVM, COCs were destined either to 1) embryo production or 2) analysis of reactive oxygen species production, superoxide dismutase (SOD) activity, catalase (CAT) activity and total antioxidant capacity (FRAP).
View Article and Find Full Text PDFJ Mater Chem B
September 2025
State Key Laboratory of Luminescent Materials and Devices, Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates, School of Materials Science and Engineering, South China University of Technology, Guangzhou, 510640, China.
Mitochondria-targeted photodynamic therapy (PDT) circumvents the short lifetime and action radius limitation of reactive oxygen species (ROS) and greatly improves the anticancer PDT efficacy. However, current approaches require different molecular engineering strategies to separately improve ROS production and introduce mitochondria targeting ability, which involve tedious synthetic procedures. Herein, we report a facile one-step cationization strategy that simultaneously improves the ROS generation efficiency and introduces mitochondria targeting ability for enhanced PDT.
View Article and Find Full Text PDFJ Am Chem Soc
September 2025
Key Laboratory of Radiopharmaceuticals, Ministry of Education, College of Chemistry, Beijing Normal University, Beijing 100875, P. R. China.
Photodynamic therapy (PDT) induces oxidative stress that triggers a compensatory upregulation of intracellular glutathione (GSH), thereby diminishing PDT efficacy. The simultaneous generation of reactive oxygen species and depletion of GSH holds promise for amplifying oxidative damage and enhancing therapeutic outcomes yet remains a challenge. In this work, we present a Type-I supramolecular photosensitizer designed to deplete GSH through a hydrogen atom transfer mechanism while concurrently generating superoxide radicals.
View Article and Find Full Text PDFChembiochem
September 2025
School of Pharmaceutical Science and Technology, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, Hangzhou, 310024, P. R. China.
The ATPase caseinolytic protease X (ClpX), forming the ClpXP complex with caseinolytic protease P (ClpP), is essential for mitochondrial protein homeostasis. While ClpP targeting is a recognized anticancer strategy, the role of ClpX in cancer remains underexplored. In pancreatic ductal adenocarcinoma (PDAC), elevated CLPX expression correlates with poor prognosis, suggesting its oncogenic function.
View Article and Find Full Text PDFAdv Healthc Mater
September 2025
Hebei Key Laboratory of Biomaterials and Smart Theranostics, School of Health Sciences and Biomedical Engineering, Hebei University of Technology, Tianjin, 300131, China.
Periprosthetic joint infection (PJI) represents a serious complication following joint arthroplasty, and it often results in implant failure, prolonged morbidity, and additional healthcare burdens. Current clinical strategies for PJI treatment face obstacles, including antibiotic resistance, high recurrence rate, and compromised bone repair. To address these challenges, a novel nanozyme-based coordination compound designated as W-GA-Van@Zn is developed.
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