학술논문
Inflammatory bowel disease induces inflammatory and pre-neoplastic changes in the prostate
Document Type
article
Author
Desai, Anuj S; Sagar, Vinay; Lysy, Barbara; Weiner, Adam B; Ko, Oliver S; Driscoll, Conor; Rodriguez, Yara; Vatapalli, Rajita; Unno, Kenji; Han, Huiying; Cohen, Jason E; Vo, Amanda X; Pham, Minh; Shin, Michael; Jain-Poster, Ketan; Ross, Jennifer; Morency, Elizabeth G; Meyers, Travis J; Witte, John S; Wu, Jennifer; Abdulkadir, Sarki A; Kundu, Shilajit D
Source
Prostate Cancer and Prostatic Diseases. 25(3)
Subject
Language
Abstract
BackgroundInflammatory bowel disease (IBD) has been implicated as a risk factor for prostate cancer, however, the mechanism of how IBD leads to prostate tumorigenesis is not known. Here, we investigated whether chronic intestinal inflammation leads to pro-inflammatory changes associated with tumorigenesis in the prostate.MethodsUsing clinical samples of men with IBD who underwent prostatectomy, we analyzed whether prostate tumors had differences in lymphocyte infiltrate compared to non-IBD controls. In a mouse model of chemically-induced intestinal inflammation, we investigated whether chronic intestinal inflammation could be transferred to the wild-type mouse prostate. In addition, mouse prostates were evaluated for activation of pro-oncogenic signaling and genomic instability.ResultsA higher proportion of men with IBD had T and B lymphocyte infiltration within prostate tumors. Mice with chronic colitis showed significant increases in prostatic CD45 + leukocyte infiltration and elevation of three pro-inflammatory cytokines-TIMP-1, CCL5, and CXCL1 and activation of AKT and NF-kB signaling pathways. Lastly, mice with chronic colitis had greater prostatic oxidative stress/DNA damage, and prostate epithelial cells had undergone cell cycle arrest.ConclusionsThese data suggest chronic intestinal inflammation is associated with an inflammatory-rich, pro-tumorigenic prostatic phenotype which may explain how gut inflammation fosters prostate cancer development in men with IBD.