PROX1 and β-catenin are prognostic markers in pancreatic ductal adenocarcinoma.

Abstract

BACKGROUND:

The Wnt/β-catenin pathway has a key role in regulating cellular processes and its aberrant signaling can lead to cancer development. The role of β-catenin expression in pancreatic ductal adenocarcinoma is somewhat controversial. Transcription factor PROX1 is a target of Wnt/β-catenin signaling and it is involved in carcinogenesis through alterations in its expression. The actions can be either oncogenic or tumor suppressive depending on the tissue. The aim of this study was to investigate PROX1 and β-catenin expression in pancreatic ductal adenocarcinoma (PDAC).

METHODS:

Expression of PROX1 and β-catenin were evaluated in 156 patients by immunohistochemistry of tissue microarrays. Associations between tumor marker expression and clinicopathological parameters were assessed by the Fischer's exact-test or the linear-by-linear association test. The Kaplan-Meier method and log-rank test were used for survival analysis. Uni- and multivariate survival analyses were carried out by the Cox regression proportional hazard model.

RESULTS:

High PROX1 expression was seen in 74 (48 %) tumors, and high β-catenin expression in 100 (65 %). High β-catenin expression was associated with lower tumor grade (p = 0.025). High PROX1 and β-catenin expression associated significantly with lower risk of death from PDAC in multivariate analysis (HR = 0.63; 95 % CI 0.42-0.95, p = 0.026; and HR = 0.54; 95 % CI 0.35-0.82, p = 0.004; respectively). The combined high expression of PROX1 and β-catenin also predicted lower risk of death from PDAC (HR = 0.46; 95 % CI 0.28-0.76, p = 0.002).

CONCLUSION:

In conclusion, high PROX1 and β-catenin expression were independent factors for better prognosis in pancreatic ductal adenocarcinoma.

• Authors: Kapo Saukkonen, Jaana Hagström, Harri Mustonen, Anne Juuti, Stig Nordling, Pauliina Kallio, Kari Alitalo, Hanna Seppänen, Caj Haglund
• Journal: BMC cancer (BMC Cancer) Vol. 16 Pg. 472 (07 13 2016) ISSN: 1471-2407 [Electronic] England
• PMID: 27411302 (Publication Type: Journal Article, Research Support, Non-U.S. Gov't)

Chemical References

• Biomarkers, Tumor
• CTNNB1 protein, human
• Homeodomain Proteins
• Tumor Suppressor Proteins
• beta Catenin
• prospero-related homeobox 1 protein

Topics

• Adult
• Aged
• Aged, 80 and over
• Biomarkers, Tumor (metabolism)
• Carcinoma, Pancreatic Ductal (metabolism, mortality, pathology, surgery)
• Female
• Homeodomain Proteins (metabolism)
• Humans
• Immunohistochemistry
• Kaplan-Meier Estimate
• Male
• Middle Aged
• Neoplasm Staging
• Pancreatic Neoplasms (metabolism, mortality, pathology, surgery)
• Prognosis
• Proportional Hazards Models
• Retrospective Studies
• Tissue Array Analysis
• Tumor Suppressor Proteins (metabolism)
• Wnt Signaling Pathway
• beta Catenin (metabolism)