Nuclear ubiquitin C-terminal hydrolase L5 expression associates with increased patient survival in pancreatic ductal adenocarcinoma

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http://hdl.handle.net/10138/222488

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Arpalahti , L , Saukkonen , K , Hagström , J , Mustonen , H , Seppänen , H , Haglund , C & Holmberg , C I 2017 , ' Nuclear ubiquitin C-terminal hydrolase L5 expression associates with increased patient survival in pancreatic ductal adenocarcinoma ' , Tumor Biology , vol. 39 , no. 6 . https://doi.org/10.1177/1010428317710411

Title: Nuclear ubiquitin C-terminal hydrolase L5 expression associates with increased patient survival in pancreatic ductal adenocarcinoma
Author: Arpalahti, Leena; Saukkonen, Kapo; Hagström, Jaana; Mustonen, Harri; Seppänen, Hanna; Haglund, Caj; Holmberg, Carina I.
Contributor: University of Helsinki, Research Programs Unit
University of Helsinki, Research Programs Unit
University of Helsinki, HUS Head and Neck Center
University of Helsinki, Clinicum
University of Helsinki, HUS Abdominal Center
University of Helsinki, Clinicum
University of Helsinki, Research Programs Unit
Date: 2017-06-27
Language: eng
Number of pages: 9
Belongs to series: Tumor Biology
ISSN: 1010-4283
URI: http://hdl.handle.net/10138/222488
Abstract: Pancreatic ductal adenocarcinoma is a lethal disease with an overall 5-year survival of less than 5%. Prognosis among surgically treated patients is difficult and identification of new biomarkers is essential for accurate prediction of patient outcome. As part of one of the major cellular protein degradation systems, the proteasome plays a fundamental role in both physiological and pathophysiological conditions including cancer. The proteasome-associated deubiquitinating enzyme ubiquitin C-terminal hydrolase L5 (UCHL5)/Uch37 is a modulator of proteasome activity with cancer prognostic marker potential. Cytoplasmic and nuclear immunoexpression of UCHL5 was evaluated in 154 surgical specimens from pancreatic ductal adenocarcinoma patients treated at Helsinki University Hospital, Finland, in 2000-2011. UCHL5 expression in relation to clinicopathological parameters and the association between UCHL5 In this study, positive expression and patient survival were assessed. Positive nuclear UCHL5 expression was associated with increased patient survival (p = 0.005). A survival benefit was also detectable in these subgroups of patients: over 65 years (p <0.001), at tumor stages IIB to III (p = 0.007), or with lymph-node positivity (p = 0.006). In stages IIB to III disease, patients with positive nuclear UCHL5 expression showed a twofold increase in 5-year cancer-specific survival compared to those with negative expression. Multivariate analysis identified positive nuclear UCHL5 expression as an independent prognostic factor (p = 0.012). In conclusion, UCHL5 expression could function as a prognostic marker in pancreatic ductal adenocarcinoma, particularly at disease stages IIB to III. As UCHL5 is one of the few markers predicting increased survival, our results may be of clinical relevance.
Subject: Deubiquitination
pancreatic ductal adenocarcinoma
prognosis
proteasome
ubiquitin C-terminal hydrolase L5
UCHL5
PROTEASOME INHIBITORS
MULTIPLE-MYELOMA
CELL-MIGRATION
CANCER
BORTEZOMIB
SYSTEM
UCH37
DEUBIQUITINASES
ACTIVATION
BIOMARKERS
3122 Cancers
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