Role of a novel circulatory RNA‐based biomarker panel expression in ovarian cancer. Issue 12 (13th September 2019)

• Record Type: Journal Article
• Authors: El‐Shal, Amal S.; Matboli, Marwa; Abdelaziz, Ahmed M.; Morsy, Ali A.; Abdelbary, Eman H.
• Is Part Of: IUBMB life. Volume 71:Issue 12(2019)
• Page Start: 2031
• Page End: 2047
• Publication Date: 2019-09-13
• Subjects: bioinformatics -- long noncoding RNA -- micro‐RNA -- ovarian cancer -- real‐time PCR -- toll like receptors; Biochemistry -- Periodicals; Molecular biology -- Periodicals; 572.8
• DOI: 10.1002/iub.2153
• Languages: English
• ISSNs: 1521-6543

Abstract

Abstract: Ovarian cancer (OC) is considered the sixth commonest cancer affecting women globally. We choose novel integrated specific ovarian cancer RNA biomarker panel; pellino E3 ubiquitin protein ligase family member 3 (PELI3) gene expressions along with its selected epigenetic regulators (microRNA (miR‐361‐3p) and long noncoding RNA (lncRNA RP5‐837J1.2) by bioinformatic methods. Then, differential expressions of the selected panel in the sera of 50 OC patients, 42 cases with benign ovarian lesions, and among 45 controls were determined using real‐time polymerase chain reaction quantitative (qRT‐PCR). Furthermore, their expression was measured also in malignant ovarian tissues and adjacent nontumor tissues in 23 of 50 OC patients by quantitative qRT‐PCR. The current study reported, for the first time, upregulation of serum lncRNA RP5‐837J1.2 with concomitant downregulation of miR‐361‐3p and PELI3 mRNA in malignant group compared with benign and controls groups. There were associations of serum lncRNA RP5‐837J1.2 with the affected ovary and worse International Federation of Gynecology and Obstetrics staging; associations of miR‐361‐3p with tumor size, grade, stage, and presence of metastasis; as well as associations among PELI3 mRNA expression and tumor size, grade, stage, and presence of metastasis among the OC group. In tumor tissues, miR‐361‐3p and PELI3 mRNA levels were at a higher level than that of nontumor tissues; however, tumor tissue showed lower level of lncRNA RP5‐837J1.2 compared to normal tissue. There were positive correlations between serum and tissue level of RNA RP5‐837J1.2, miR‐361‐3p, and PELI3 mRNA, but they did not reach statistical significance. Receiver operating characteristics curve analyses showed that lncRNA RP5‐837J1.2, miR‐361‐3p, and PELI3 mRNA expression levels can discriminate among OC patient, cases with benign mass, and controls with an accuracy of 96, 76, and 83%, respectively; which increased if they are combined. This novel diagnostic RNA‐based panel biomarker could be helpful for OC diagnosis.