RT Journal Article T1 Protective effects of culture extracts (CB08035-SCA and CB08035-SYP) from Marinobacter hydrocarbonoclasticus (strain CB08035) against oxidant-induced stress in human colon carcinoma Caco-2 cells A1 Martínez Caballero, María Aranzazu A1 Ares Lombán, Irma A1 Martínez Caballero, Marta A1 López Torres, Bernardo A1 Rodríguez, José Luis A1 Maximiliano Guerra, Jorge Enrique A1 Martínez Larrañaga, María Rosa A1 Anadón Navarro, Arturo Ramón A1 Rosa, José Manuel de la A1 Cueto, Mercedes AB The present study investigated the effect of culture extracts (CB08035-SCA and CB08035-SYP) from Marinobacter hydrocarbonoclasticus (strain CB08035) on cell viability and the potential protective effects attributed to molecular mechanisms underlying antioxidant response to survive oxidative stress injuries. Caco-2 cells were submitted to oxidative stress by treatment with tert-butyl hydroperoxide (t-BOOH). Both extracts prevented cell damage and enhanced activity of antioxidant defenses (NQO1 and GST activities and GSH levels) reduced by treatment with t-BOOH. Increased ROS and caspase 3/7 activity induced by t-BOOH were dose-dependently prevented when cells were treated with the extracts. CB08035-SCA caused up-regulation of Nrf2, AKT1 and Bcl-2 gene expressions. Moreover, CB08035-SCA and CB08035-SYP treatments reduced significantly Bax, BNIP3, APAF1, ERK1, JNK1, MAPK1, NFκB1, TNFα, IL-6, IL-1β and HO-1 gene expressions of apoptosis, proinflammation and oxidative stress induced by t-BOOH. CB08035-SCA and CB08035-SYP CPE extracts confer a significant protection against oxidative insults to cells. Our results show that culture extracts CB08035-SCA and CB08035-SYP from M. hydrocarbonoclasticus (strain CB08035) appeared to have antioxidant potential, based on their ability to protect antioxidant enzymes and mRNA gene expressions linked to apoptosis/oxidative pathways. These results suggest that culture extracts CB08035-SCA and CB08035-SYP can be a potential ingredient in the pharmaceutical and cosmeceutical industries. PB Elsevier SN 0278-6915 YR 2020 FD 2020 LK https://hdl.handle.net/20.500.14352/97616 UL https://hdl.handle.net/20.500.14352/97616 LA eng NO Martínez MA, Ares I, Martínez M, Lopez-Torres B, Rodríguez JL, Maximiliano JE, Martínez-Larrañaga MR, Anadón A, Rosa JM, Cueto M. Protective effects of culture extracts (CB08035-SCA and CB08035-SYP) from Marinobacter hydrocarbonoclasticus (strain CB08035) against oxidant-induced stress in human colon carcinoma Caco-2 cells. Food Chem Toxicol. 2020 Nov;145:111671. doi: 10.1016/j.fct.2020.111671. Epub 2020 Aug 9. PMID: 32784000. NO Credit authorship contribution statementMaría-Aránzazu Martínez: Conceptualization, Funding acquisition, Methodology, Validation, Formal analysis, Investigation, Writing - review & editing. Irma Ares: Investigation, Formal analysis, Writing - original draft, Writing - review & editing. Marta Martínez: Investigation, Formal analysis, Writing - original draft, Writing - review & editing. Bernardo Lopez-Torres: Methodology, Investigation. Jose-Luis Rodríguez: Methodology, Investigation, Formal analysis. Jorge-Enrique Maximiliano: Methodology, Investigation. María-Rosa Martínez-Larrañaga: Conceptualization, Methodology, Investigation, Formal analysis. Arturo Anadón: Conceptualization, Methodology, Validation, Formal analysis, Investigation. Jose-Manuel de la Rosa: Methodology, Investigation. Mercedes Cueto: Conceptualization, Funding acquisition, Methodology, Validation, Formal analysis, Investigation, Writing - review & editing. NO Ministerio de Economía, Industria y Competitividad (España) DS Docta Complutense RD 7 abr 2025