Implicaţiile biochimice ale oxidării peroxidice în cancer [Articol]
Loading...
Date
Journal Title
Journal ISSN
Volume Title
Publisher
Universitatea de Stat din Moldova
Abstract
Cancerul folosește reprogramarea metabolică pentru a rezista stresului oxidativ, evitând ferroptoza prin hiperactivarea factorului nuclear eritroid 2-înrudit cu factorul 2 (NRF2), a transportorului de cistină- glutamat (SLC7A11) și a glutation peroxidazei 4 (GPX4). Prezentul studiu analizează rolul produsului electrofil 4-hidroxinonenal (4-HNE) în progresia neoplazică. Deoarece hiperactivarea acestei căi, dependentă de glutationul redus (GSH), induce chimiorezistență, inhibarea sa este vitală. Cercetarea elucidează mecanismul prin care doxorubicina induce peroxidarea lipidică a cardiolipinei mitocondriale, generând 4-HNE. Concomitent, compușii coordinativi ai cuprului inhibă sistemul antioxidant prin depleția GSH și catalizează reacții Fenton, formând radicali hidroxil toxici. Astfel, doxorubicina și compușii de cupru devin inductori puternici ai ferroptozei. Dereglarea homeostaziei redox și intensificarea peroxidării lipidice transformă vulnerabilitatea tumorală într-un mecanism terapeutic letal eficient.
Cancer utilizes metabolic reprogramming to resist oxidative stress, avoiding ferroptosis through the hyperactivation of nuclear factor erythroid 2-related factor 2 (NRF2), the cystine-glutamate transporter (SLC7A11), and glutathione peroxidase 4 (GPX4). The present study analyzes the role of the electrophilic product 4-hydroxynonenal (4-HNE) in neoplastic progression. Since the hyperactivation of this pathway, which is dependent on reduced glutathione (GSH), induces chemoresistance, its inhibition is vital. The research elucidates the mechanism by which doxorubicin induces the lipid peroxidation of mitochondrial cardiolipin, generating 4-HNE. At the same time, copper coordination compounds inhibit the antioxidant system through GSH depletion and catalyze Fenton reactions, forming toxic hydroxyl radicals. Thus, doxorubicin and copper compounds become potent inducers of ferroptosis. The dysregulation of redox homeostasis and the intensification of lipid peroxidation transform tumor vulnerability into an effective, lethal therapeutic mechanism.
Cancer utilizes metabolic reprogramming to resist oxidative stress, avoiding ferroptosis through the hyperactivation of nuclear factor erythroid 2-related factor 2 (NRF2), the cystine-glutamate transporter (SLC7A11), and glutathione peroxidase 4 (GPX4). The present study analyzes the role of the electrophilic product 4-hydroxynonenal (4-HNE) in neoplastic progression. Since the hyperactivation of this pathway, which is dependent on reduced glutathione (GSH), induces chemoresistance, its inhibition is vital. The research elucidates the mechanism by which doxorubicin induces the lipid peroxidation of mitochondrial cardiolipin, generating 4-HNE. At the same time, copper coordination compounds inhibit the antioxidant system through GSH depletion and catalyze Fenton reactions, forming toxic hydroxyl radicals. Thus, doxorubicin and copper compounds become potent inducers of ferroptosis. The dysregulation of redox homeostasis and the intensification of lipid peroxidation transform tumor vulnerability into an effective, lethal therapeutic mechanism.
Description
Keywords
oxidare peroxidică, ferroptoză, 4-hidroxinonenal, factorul nuclear eritroid 2-înrudit cu factorul 2, glutation peroxidaza 4, doxorubicină, compuși coordinativi ai cuprului, glutation, rezistență tumorală, peroxidative oxidation, ferroptosis, 4-hydroxynonenal, nuclear factor erythroid 2-related factor 2, glutathione peroxidase 4, doxorubicin, copper coordination compounds, glutathione, tumor resistance
Citation
CEBOTARI, Dionisie; Evgheni GRUSAC; Cristea DANIEL; Olga GARBUZ; Silvia STRATULAT; Olga TAGADIUC şi Veronica SARDARI. Implicaţiile biochimice ale oxidării peroxidice în cancer. In: Materiale avansate în biofarmaceutică și tehnică = Advanced materials in biofarmaceuticals and technics: conferința ştiințifică națională cu participare internațională, 29 mai 2026: Dedicată aniversării a 80-a de la nașterea ilustrului savant chimist, academicianul Aurelian Gulea şi aniversării a 80 de ani de la fondarea Universităţii de Stat din Moldova: Culegere de lucrări științifice. Chișinău: Editura USM, 2026, pp. 97-109. ISBN 978-9975-77-515-1. Disponibil: https://doi.org/10.59295/mabt2026.10