Circulating PTGS2, JAG1, GUCY2C and PGF mRNA in Peripheral Blood and Serum as Potential Biomarkers for Patients with Metastatic Colon Cancer Jiménez Luna, Cristina González Flores, Encarnación Ortiz Quesada, Raúl Martínez González, Luis Javier Antúnez Rodríguez, Alba Expósito Ruiz, Manuela Melguizo Alonso, Consolación Caba Pérez, Octavio Prados Salazar, José Carlos Metastatic colon cancer Biomarkers Angiogenesis Liquid biopsies Circulating mRNA Digital PCR Genes involved in the angiogenic process have been proposed for the diagnosis and therapeutic response of metastatic colorectal cancer (CRC). This study aimed to investigate the value of PTGS2, JAG1, GUCY2C and PGF-circulating RNA as biomarkers in metastatic CRC. Blood cells and serum mRNA from 59 patients with metastatic CRC and 47 healthy controls were analyzed by digital PCR. The area under the receiver operating characteristic curve (AUC) was used to estimate the diagnostic value of each mRNA alone or mRNA combinations. A significant upregulation of the JAG1, PTGS2 and GUCY2C genes in blood cells and serum samples from metastatic CRC patients was detected. Circulating mRNA levels in the serum of all genes were significantly more abundant than in blood. The highest discrimination ability between metastatic CRC patients and healthy donors was obtained with PTGS2 (AUC of 0.984) and GUCY2C (AUC of 0.896) in serum samples. Biomarker combinations did not improve the discriminatory capacity of biomarkers separately. Analyzed biomarkers showed no correlation with overall survival or progression-free survival, but GUCY2C and GUCY2C/PTGS2 expression in serum correlated significantly with the response to antiangiogenic agents. These findings demonstrate that assessment of genes involved in the angiogenic process may be a potential non-invasive diagnostic tool for metastatic CRC and its response to antiangiogenic therapy. 2021-05-25T12:30:06Z 2021-05-25T12:30:06Z 2021 info:eu-repo/semantics/article Jimenez-Luna, C.; González-Flores, E.; Ortiz, R.; Martínez-González, L.J.; Antúnez-Rodríguez, A.; Expósito-Ruiz, M.; Melguizo, C.; Caba, O.; Prados, J. Circulating PTGS2, JAG1, GUCY2C and PGF mRNA in Peripheral Blood and Serum as Potential Biomarkers for Patients with Metastatic Colon Cancer. J. Clin. Med. 2021, 10, 2248. https://doi.org/10.3390/jcm10112248 http://hdl.handle.net/10481/68721 10.3390/jcm10112248 eng http://creativecommons.org/licenses/by/3.0/es/ info:eu-repo/semantics/openAccess Atribución 3.0 España MDPI