A1 Refereed original research article in a scientific journal

Tumor-Associated Macrophages Provide Significant Prognostic Information in Urothelial Bladder Cancer




AuthorsBoström MM, Irjala H, Mirtti T, Taimen P, Kauko T, Ålgars A, Jalkanen S, Boström PJ

PublisherPUBLIC LIBRARY SCIENCE

Publication year2015

JournalPLoS ONE

Journal name in sourcePLOS ONE

Journal acronymPLOS ONE

Article numberARTN e0133552

Volume10

Issue7

Number of pages16

ISSN1932-6203

DOIhttps://doi.org/10.1371/journal.pone.0133552


Abstract

Inflammation is an important feature of carcinogenesis. Tumor-associated macrophages (TAMs) can be associated with either poor or improved prognosis, depending on their properties and polarization. Current knowledge of the prognostic significance of TAMs in bladder cancer is limited and was investigated in this study. We analyzed 184 urothelial bladder cancer patients undergoing transurethral resection of a bladder tumor or radical cystectomy. CD68 (pan-macrophage marker), MAC387 (polarized towards type 1 macrophages), and CLEVER-1/Stabilin-1 (type 2 macrophages and lymphatic/blood vessels) were detected immunohistochemically. The median follow-up time was 6.0 years. High macrophage counts associated with a higher pT category and grade. Among patients undergoing transurethral resection, all studied markers apart from CLEVER-1/Stabilin-1 were associated with increased risk of progression and poorer disease-specific and overall survival in univariate analyses. High levels of two macrophage markers (CD68/MAC387(+/+) or CD68/CLEVER-1(+/+) groups) had an independent prognostic role after transurethral resection in multivariate analyses. In the cystectomy cohort, MAC387, alone and in combination with CD68, was associated with poorer survival in univariate analyses, but none of the markers were independent predictors of outcome in multivariate analyses. In conclusion, this study demonstrates that macrophage phenotypes provide significant independent prognostic information, particularly in bladder cancers undergoing transurethral resection.




Last updated on 2024-26-11 at 22:43