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Cancers 2011, 3(1), 897-912; doi:10.3390/cancers3010897

Tissue Transglutaminase (TG2)-Induced Inflammation in Initiation, Progression, and Pathogenesis of Pancreatic Cancer

1,2,* and 1,2
Department of Experimental Therapeutics, The University of Texas M. D. Anderson Cancer Center, Houston, TX 77030, USA
Graduate School of Biomedical Sciences, The University of Texas Health Science Center, Houston, TX 77030, USA
Author to whom correspondence should be addressed.
Received: 13 January 2011 / Revised: 1 February 2011 / Accepted: 14 February 2011 / Published: 25 February 2011
(This article belongs to the Special Issue Pancreatic Cancer)
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Pancreatic cancer (PC) is among the deadliest cancers, with a median survival of six months. It is generally believed that infiltrating PC arises through the progression of early grade pancreatic intraepithelial lesions (PanINs). In one model of the disease, the K-ras mutation is an early molecular event during progression of pancreatic cancer; it is followed by the accumulation of additional genetic abnormalities. This model has been supported by animal studies in which activated K-ras and p53 mutations produced metastatic pancreatic ductal adenocarcinoma in mice. According to this model, oncogenic K-ras induces PanIN formation but fails to promote the invasive stage. However, when these mice are subjected to caerulein treatment, which induces a chronic pancreatitis-like state and inflammatory response, PanINs rapidly progress to invasive carcinoma. These results are consistent with epidemiologic studies showing that patients with chronic pancreatitis have a much higher risk of developing PC. In line with these observations, recent studies have revealed elevated expression of the pro-inflammatory protein tissue transglutaminase (TG2) in early PanINs, and its expression increases even more as the disease progresses. In this review we discuss the implications of increased TG2 expression in initiation, progression, and pathogenesis of pancreatic cancer. View Full-Text
Keywords: inflammation; metastasis; chemoresistance; epithelial-to-mesenchymal transition; cancer stem cell inflammation; metastasis; chemoresistance; epithelial-to-mesenchymal transition; cancer stem cell

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Mehta, K.; Han, A. Tissue Transglutaminase (TG2)-Induced Inflammation in Initiation, Progression, and Pathogenesis of Pancreatic Cancer. Cancers 2011, 3, 897-912.

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