Endoplasmic Reticulum Stress and Its Role in Metabolic Reprogramming of Cancer
2025
Salvatore Zarrella | Maria Rosaria Miranda | Verdiana Covelli | Ignazio Restivo | Sara Novi | Giacomo Pepe | Luisa Tesoriere | Manuela Rodriquez | Alessia Bertamino | Pietro Campiglia | Mario Felice Tecce | Vincenzo Vestuto
<b>Background/Objectives:</b> Endoplasmic reticulum (ER) stress occurs when ER homeostasis is disrupted, leading to the accumulation of misfolded or unfolded proteins. This condition activates the unfolded protein response (UPR), which aims to restore balance or trigger cell death if homeostasis cannot be achieved. In cancer, ER stress plays a key role due to the heightened metabolic demands of tumor cells. This review explores how metabolomics can provide insights into ER stress-related metabolic alterations and their implications for cancer therapy. <b>Methods:</b> A comprehensive literature review was conducted to analyze recent findings on ER stress, metabolomics, and cancer metabolism. Studies examining metabolic profiling of cancer cells under ER stress conditions were selected, with a focus on identifying potential biomarkers and therapeutic targets. <b>Results:</b> Metabolomic studies highlight significant shifts in lipid metabolism, protein synthesis, and oxidative stress management in response to ER stress. These metabolic alterations are crucial for tumor adaptation and survival. Additionally, targeting ER stress-related metabolic pathways has shown potential in preclinical models, suggesting new therapeutic strategies. <b>Conclusions:</b> Understanding the metabolic impact of ER stress in cancer provides valuable opportunities for drug development. Metabolomics-based approaches may help identify novel biomarkers and therapeutic targets, enhancing the effectiveness of antitumor therapies.
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