PURPOSE Carbon monoxide (CO) is recognized for its anti-inflammatory, anti-apoptotic, and anti-proliferative properties. The application of carbon monoxide-releasing molecules (CO-RMs) is thus a promising strategy for therapeutic interventions in various pathological conditions, particularly in the field of oncology. This study aims to evaluate the influence of CO-RMs on several key processes involved in the pathogenesis of prostate cancer (PCa). METHODS We assessed the effects of three water-soluble CO-RMs” CORM-3, CORM-401, and CORM-A1 (concentrations ranging from 25 to 150µM for 6 hours)” on two prostate adenocarcinoma cell lines: the androgen receptor-insensitive PC3 and the androgen receptor-dependent MDA PCa 2b. Cell viability was assessed using the MTS assay. The production of reactive oxygen species (ROS) was measured via the DCFH-DA probe by confocal microscopy. Additionally, we performed migration and cell adhesion assays and evaluated several metabolic parameters, including ATP levels by luciferase assay and lactate dehydrogenase (LDH) enzyme activity by kinetic assay. The expression of genes associated with oxidative stress, angiogenesis, and metabolism was quantified using real-time PCR. Statistical significance was predetermined at p<0.05. RESULTS Treatment with CO-RMs did not impact cell viability but notably decreased intracellular ROS levels (p<0.05). Moreover, this treatment was linked to increased cell adhesion and reduced migration, particularly following CORM-3 administration (p<0.05). Metabolic analysis revealed that CORM-401 treatment decreased ATP levels and LDH activity in the PC3 cell line (p<0.05), while increasing both ATP levels and LDH activity in the MDA PCa 2b cell line. Gene expression analysis confirmed a repressive effect of CO-RMs on markers of oxidative stress (SOD-2), metabolism (LDH), and angiogenesis (VEGF) (p<0.05). CONCLUSION Our findings suggest that CO-RMs can modulate key cellular processes relevant to PCa pathophysiology without affecting cell viability. These results underscore the potential of CO-RMs as modulators of oxidative stress, metabolism, and angiogenesis, presenting a novel avenue for therapeutic exploration in oncology.