Association between p53 protein phosphorylated at serine 20 expression and ovarian carcinoma stem cells phenotype: correlation with clinicopathological parameters of ovarian cancer.

We examined correlation between p53 protein phosphorylated at serine 20 (p-p53(Ser20)) and CD133, SOX2, Notch1 expression in order to reveal p-p53(Ser20) stemness function in ovarian cancer. p-p53(Ser20), CD133, Notch1, SOX2 expression was analyzed on 104 ovarian carcinomas using immunohistochemical staining. The positive correlation between p53 and p-p53(Ser20) (P=0.02), p53 and SOX2 (P=0.02), p-p53(Ser20) and Notch1 (P=0.03), p-p53(Ser20) and CD133 (P=0.01) expression was observed in ovarian carcinomas. The parallel expression of p-p53(Ser20)/CD133, p-p53(Ser20)/Notch1 reflecting coexpression of these proteins in single carcinoma cell, and p-p53(Ser20)/SOX2 expression was associated with advanced stage and p-p53(Ser20)/Notch1, p53/SOX2, p-p53(Ser20)/SOX2 parallel expression correlated with high tumor grade. The correlation between p-p53(Ser20) and CD133, Notch1, SOX2 expression and clinical parameters indicate, that malignancy and biological behavior of ovarian carcinomas depend on interaction between p-p53(Ser20) and carcinoma stem cells biomarkers expression. PMID: 31088101 [PubMed - in process]
Source: Neoplasma - Category: Cancer & Oncology Authors: Tags: Neoplasma Source Type: research