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Plasmin(Ogen) serves as a favorable biomarker for prediction of survival in advanced high-grade serous ovarian cancer.
Biol. Chem. 398, 765-773 (2017)
n serous ovarian cancer, the clinical relevance of tumor cell-expressed plasmin(ogen) (PLG) has not yet been evaluated. Due to its proteolytic activity, plasmin supports tumorigenesis, however, angiostatin(-like) fragments, derived from PLG, can also function as potent antitumorigenic factors. In the present study, we assessed PLG protein expression in 103 cases of advanced high-grade serous ovarian cancer (FIGO III/IV) by immunohistochemistry. In 70/103 cases, positive staining of tumor cells was observed. In univariate Cox regression analysis, PLG staining was positively associated with prolonged overall survival (OS) (hazard ratio [HR] = 0.59, P = 0.026) of the patients. In multivariable analysis, PLG, together with residual tumor mass, remained a statistically significant independent prognostic marker (HR = 0.49, P = 0.009). In another small patient cohort (n=29), we assessed mRNA expression levels of PLG by quantitative PCR. Here, elevated PLG mRNA levels were also significantly associated with prolonged OS of patients (Kaplan-Meier analysis; P = 0.001). This finding was validated by in silico analysis of a microarray data set (n = 398) from The Cancer Genome Atlas (Kaplan-Meier analysis; P = 0.031). In summary, these data indicate that elevated PLG expression represents a favorable prognostic biomarker in advanced (FIGO III/IV) high-grade serous ovarian cancer.
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Publication type Article: Journal article
Document type Scientific Article
Keywords immunohistochemistry; PAI-1; plasmin; plasminogen; ovarian cancer; quantitative PCR; uPA; Kallikrein-related Peptidases; Plasminogen-activator; Inhibitor Pai-1; Angiostatin Generation; Thrombostasis Axis; Primary Tumor; Cell-lines; Upa; Expression; Level-of-evidence-1
ISSN (print) / ISBN 1431-6730
Journal Biological Chemistry
Quellenangaben Volume: 398, Issue: 7, Pages: 765-773
Publisher de Gruyter
Publishing Place Berlin
Reviewing status Peer reviewed
Institute(s) Research Unit Analytical Pathology (AAP)