High NF-κB and STAT3 activity in human urothelial carcinoma: a pilot study.

Abstract:

PURPOSE:Given that the tumor-promoting inflammation has been previously established in squamous cell carcinoma of the bladder but its contribution to development of urothelial carcinoma (UC) still remains elusive, our aim was to study changes in expression and activity of inflammation-mediating NF-κB and STAT3 transcription factors in human urothelial bladder carcinoma as well as expression of their target genes cyclin D1, VEGFA and TGFβ1. METHODS:Gene expression of STAT3, NF-κB, TGFβ1, cyclin D1 and VEGFA was measured by quantitative real-time polymerase chain reaction in both tumor and healthy bladder tissue from 36 patients with UC of the bladder. Activation of STAT3 and NF-κB was assessed with immunohistochemistry and immunoblot. RESULTS:Urothelial bladder carcinoma displayed elevated expression as well as activation of NF-κB (P = 5.38e-10) and STAT3 (P = 0.002) transcription factors. Furthermore, elevated level of expression was observed for cyclin D1, VEGFA and TGFβ1 (P = 9.71e-09, P = 9.71e-09, P = 5.38e-10). Preliminary statistical analysis indicated that the level of upregulation of STAT3 or NF-κB was probably not dependent upon the grade (P = 0.984 and 0.803, respectively) and invasiveness of the tumor (0.399 and 0.949), nor to the gender (0.780 and 0.536) and age (0.660 and 0.816) of the patients. CONCLUSIONS:NF-κB and STAT3 signaling pathways, as main inflammatory mediators, are found to be activated in urothelial bladder carcinoma indicating that chronic inflammatory processes are accompanying development of this tumor type. Future studies will have to determine possible causative role of inflammatory processes in development of urothelial bladder carcinomas.

journal_name

World J Urol

journal_title

World journal of urology

authors

Degoricija M,Situm M,Korać J,Miljković A,Matić K,Paradžik M,Marinović Terzić I,Jerončić A,Tomić S,Terzić J

doi

10.1007/s00345-014-1237-1

subject

Has Abstract

pub_date

2014-12-01 00:00:00

pages

1469-75

issue

6

eissn

0724-4983

issn

1433-8726

journal_volume

32

pub_type

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